Name: taste exam: a brief and validated test
Uploaded: 2018-08-17T12:30:00
Description: Watch this Scientific Journal Video about Taste Exam: A Brief and Validated Test at JoVE.com

来自国立卫生研究院的奖项支持这项研究 (R01DC013588 到 nac、R21DC013886 和 DRR, 以及 NIDCD 行政研究补充, 以促进临床医生科学家在化学感受研究中的出现)。我们收集了部分从 OD018125 的 NIH 基金购买的设备的基因型数据。

宾夕法尼亚大学机构审查委员会批准了这项议定书。如果他们18岁以下或怀孕, 我们就排除了这些科目。
1. 口腔评价: 疾病评估和乳突鉴定
<ol><li>指示主语张开嘴。</li>
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使用光源, 如手电筒或前照灯, 照亮口腔和检查该地区的七个子网站 (舌, 口, 颊粘膜, 唇粘膜, 牙龈, 硬腭, 和 retromolar 三角)。
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<li>可视化舌头的背表面。指导主体抬起舌头, 检查腹舌表面和?...

<ol>
	<li>Cowart, B. J., Young, I. M., Feldman, R. S., Lowry, L. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Clinical+disorders+of+smell+and+taste.">Clinical disorders of smell and taste.</a> Occupational Medicine. 12 (3), 465-483 (1997).</li><li>Ackerman, B. H., Kasbekar, N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Disturbances+of+taste+and+smell+induced+by+drugs.">Disturbances of taste and smell induced by drugs.</a> Pharmacotherapy. 17 (3), 482-496 (1997).</li><li>Kveton, J. F., Bartoshuk, L. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+effect+of+unilateral+chorda+tympani+damage+on+taste.">The effect of unilateral chorda tympani damage on taste.</a> Laryngoscope. 104, 25-29 (1994).</li><li>Fischer, R. A., Griffin, F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Pharmacogenetic+aspects+of+gustation.">Pharmacogenetic aspects of gustation.</a> Drug Research. 14 (14), 673-686 (1964).</li><li>Joyce, C. R., Pan, L., Varonos, D. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Taste+sensitivity+may+be+used+to+predict+pharmacological+effects.">Taste sensitivity may be used to predict pharmacological effects.</a> Life Science. 7 (9), 533-537 (1968).</li><li>Adappa, N. D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Genetics+of+the+taste+receptor+T2R38+correlates+with+chronic+rhinosinusitis+necessitating+surgical+intervention.">Genetics of the taste receptor T2R38 correlates with chronic rhinosinusitis necessitating surgical intervention.</a> International Forum of Allergy &amp; Rhinology. , (2013).</li><li>Lipchock, S. V., Reed, D. R., Mennella, J. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Relationship+between+bitter-taste+receptor+genotype+and+solid+medication+formulation+usage+among+young+children:+a+retrospective+analysis.">Relationship between bitter-taste receptor genotype and solid medication formulation usage among young children: a retrospective analysis.</a> Clinical Therapeutics. 34 (3), 728-733 (2012).</li><li>Bartoshuk, L. M., Carterette, E. C., Friedman, M. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Handbook of perception: Tasting and smelling. , 2-18 (1978).</li><li>Coldwell, S. E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Gustation+assessment+using+the+NIH+Toolbox.">Gustation assessment using the NIH Toolbox.</a> Neurology. 80 (11 Suppl 3), S20-S24 (2013).</li><li>Mueller, C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Quantitative+assessment+of+gustatory+function+in+a+clinical+context+using+impregnated+&amp;#34;taste+strips&amp;#34.">Quantitative assessment of gustatory function in a clinical context using impregnated &amp;#34;taste strips&amp;#34.</a> Rhinology. 41 (1), 2-6 (2003).</li><li>Reed, D. R., Tanaka, T., McDaniel, A. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Diverse+tastes:+Genetics+of+sweet+and+bitter+perception.">Diverse tastes: Genetics of sweet and bitter perception.</a> Physiological Behavior. 88 (3), 215-226 (2006).</li><li>Miller, I. J., Reedy, F. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Variations+in+human+taste+bud+density+and+taste+intensity+perception.">Variations in human taste bud density and taste intensity perception.</a> Physiological Behavior. 47 (6), 1213-1219 (1990).</li><li>Shahbake, M., Hutchinson, I., Laing, D. G., Jinks, A. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Rapid+quantitative+assessment+of+fungiform+papillae+density+in+the+human+tongue.">Rapid quantitative assessment of fungiform papillae density in the human tongue.</a> Brain Research. 1052 (2), 196-201 (2005).</li><li>Spielman, A. I., Pepino, M. Y., Feldman, R., Brand, J. G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Technique+to+collect+fungiform+(taste)+papillae+from+human+tongue.">Technique to collect fungiform (taste) papillae from human tongue.</a> Journal of Visualized Experiments. 18 (42), 2201 (2010).</li><li>Nuessle, T. M., Garneau, N. L., Sloan, M. M., Santorico, S. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Denver+papillae+protocol+for+objective+analysis+of+fungiform+papillae.">Denver papillae protocol for objective analysis of fungiform papillae.</a> Journal of Visualized Experiments. (100), e52860 (2015).</li><li>Sanyal, S., O'Brien, S. M., Hayes, J. E., Feeney, E. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=TongueSim:+development+of+an+automated+method+for+rapid+assessment+of+fungiform+papillae+density+for+taste+research.">TongueSim: development of an automated method for rapid assessment of fungiform papillae density for taste research.</a> Chemical Senses. 41 (4), 357-365 (2016).</li><li>Spielman, A. I., Brand, J. G., Buischi, Y., Bretz, W. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Resemblance+of+tongue+anatomy+in+twins.">Resemblance of tongue anatomy in twins.</a> Twin Research and Human Genetics. 14 (3), 277-282 (2011).</li><li>Kalmus, H., Smith, S. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+antimode+and+lines+of+optimal+separation+in+a+genetically+determined+bimodal+distribution,+with+particular+reference+to+phenylthiocarbamide+sensitivity.">The antimode and lines of optimal separation in a genetically determined bimodal distribution, with particular reference to phenylthiocarbamide sensitivity.</a> Annals of Human Genetics. 29 (2), 127-138 (1965).</li><li>Pearson, J., Finegold, M. J., Budzilovich, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+tongue+and+taste+in+familial+dysautonomia.">The tongue and taste in familial dysautonomia.</a> Pediatrics. 45 (5), 739-745 (1970).</li><li>Fukutake, T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Late-onset+hereditary+ataxia+with+global+thermoanalgesia+and+absence+of+fungiform+papillae+on+the+tongue+in+a+Japanese+family.">Late-onset hereditary ataxia with global thermoanalgesia and absence of fungiform papillae on the tongue in a Japanese family.</a> Brain. 119 (Pt 3), 1011-1021 (1996).</li><li>Kinnamon, S. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Taste+receptor+signalling+-+from+tongues+to+lungs.">Taste receptor signalling - from tongues to lungs.</a> Acta physiologica. 204 (2), 158-168 (2012).</li><li>Lewandowski, B. C., Sukumaran, S. K., Margolskee, R. F., Bachmanov, A. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Amiloride-insensitive+salt+taste+is+mediated+by+two+populations+of+type+iii+taste+cells+with+distinct+transduction+mechanisms.">Amiloride-insensitive salt taste is mediated by two populations of type iii taste cells with distinct transduction mechanisms.</a> Journal of Neuroscience. 36 (6), 1942-1953 (2016).</li><li>Vandenbeuch, A., Clapp, T. R., Kinnamon, S. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Amiloride-sensitive+channels+in+type+I+fungiform+taste+cells+in+mouse.">Amiloride-sensitive channels in type I fungiform taste cells in mouse.</a> BMC Neuroscience. 9, 1 (2008).</li><li>Margolskee, R. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+biochemistry+and+molecular+biology+of+taste+transduction.">The biochemistry and molecular biology of taste transduction.</a> Current Opinions in Neurobiology. 3 (4), 526-531 (1993).</li><li>Meyerhof, W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+molecular+receptive+ranges+of+human+TAS2R+bitter+taste+receptors.">The molecular receptive ranges of human TAS2R bitter taste receptors.</a> Chemical Senses. 35 (2), 157-170 (2010).</li><li>Yee, K. K., Sukumaran, S. K., Kotha, R., Gilbertson, T. A., Margolskee, R. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Glucose+transporters+and+ATP-gated+K++(KATP)+metabolic+sensors+are+present+in+type+1+taste+receptor+3+(T1r3)-expressing+taste+cells.">Glucose transporters and ATP-gated K+ (KATP) metabolic sensors are present in type 1 taste receptor 3 (T1r3)-expressing taste cells.</a> Proceedings of the National Academy of Sciences USA. , (2011).</li><li>Tordoff, M. G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Calcium:+taste,+intake+and+appetite.">Calcium: taste, intake and appetite.</a> Physiological Review. 81, 1567-1597 (2001).</li><li>Reed, D. R., Xia, M. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Recent+advances+in+fatty+acid+perception+and+genetics.">Recent advances in fatty acid perception and genetics.</a> Advances in Nutrition. 6 (3), 353S-360S (2015).</li><li>Blekhman, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Host+genetic+variation+impacts+microbiome+composition+across+human+body+sites.">Host genetic variation impacts microbiome composition across human body sites.</a> Genome Biology. 16, 191 (2015).</li><li>Hoon, M. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Putative+mammalian+taste+receptors:+a+class+of+taste-specific+GPCRs+with+distinct+topographic+selectivity.">Putative mammalian taste receptors: a class of taste-specific GPCRs with distinct topographic selectivity.</a> Cell. 96 (4), 541-551 (1999).</li><li>Laffitte, A., Neiers, F., Briand, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Functional+roles+of+the+sweet+taste+receptor+in+oral+and+extraoral+tissues.">Functional roles of the sweet taste receptor in oral and extraoral tissues.</a> Current Opinion in Clinical Nutrition and Metabolic. 17 (4), 379-385 (2014).</li><li>An, S. S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Tas2r+activation+promotes+airway+smooth+muscle+relaxation+despite+beta2-adrenergic+receptor+tachyphylaxis.">Tas2r activation promotes airway smooth muscle relaxation despite beta2-adrenergic receptor tachyphylaxis.</a> American Journal of Physiology-Lung Cellular and Molecular. , (2012).</li><li>Fox, A. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+relationship+between+chemical+composition+and+taste.">The relationship between chemical composition and taste.</a> Science. 74, 607 (1931).</li><li>Fox, A. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+relationship+between+chemical+constitution+and+taste.">The relationship between chemical constitution and taste.</a> Proceedings of the National Academy of Sciences USA. 18, 115-120 (1932).</li><li>Bufe, B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+molecular+basis+of+individual+differences+in+phenylthiocarbamide+and+propylthiouracil+bitterness+perception.">The molecular basis of individual differences in phenylthiocarbamide and propylthiouracil bitterness perception.</a> Current Biol.ogy. 15 (4), 322-327 (2005).</li><li>Reed, D. R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+perception+of+quinine+taste+intensity+is+associated+with+common+genetic+variants+in+a+bitter+receptor+cluster+on+chromosome+12.">The perception of quinine taste intensity is associated with common genetic variants in a bitter receptor cluster on chromosome 12.</a> Human Molecular Genetics. 19 (21), 4278-4285 (2010).</li><li>Bobowski, N., Reed, D. R., Mennella, J. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Variation+in+the+TAS2R31+bitter+taste+receptor+gene+relates+to+liking+for+the+nonnutritive+sweetener+Acesulfame-K+among+children+and+adults.">Variation in the TAS2R31 bitter taste receptor gene relates to liking for the nonnutritive sweetener Acesulfame-K among children and adults.</a> Science Reports. 6, 39135 (2016).</li><li>Allen, A. L., McGeary, J. E., Knopik, V. S., Hayes, J. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Bitterness+of+the+non-nutritive+sweetener+acesulfame+potassium+varies+with+polymorphisms+in+TAS2R9+and+TAS2R31.">Bitterness of the non-nutritive sweetener acesulfame potassium varies with polymorphisms in TAS2R9 and TAS2R31.</a> Chemical Senses. 38 (5), 379-389 (2013).</li><li>Roudnitzky, N., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Genomic,+genetic,+and+functional+dissection+of+bitter+taste+responses+to+artificial+sweeteners.">Genomic, genetic, and functional dissection of bitter taste responses to artificial sweeteners.</a> Human Molecular Genetics. 20 (17), 3437-3449 (2011).</li><li>Guo, S. W., Reed, D. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+genetics+of+phenylthiocarbamide+perception.">The genetics of phenylthiocarbamide perception.</a> Annals in Human Biology. 28 (2), 111-142 (2001).</li><li>Bartoshuk, L. M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Labeled+scales+(e.g.,+category,+Likert,+VAS)+and+invalid+across-group+comparisons:+what+we+have+learned+from+genetic+variation+in+taste.">Labeled scales (e.g., category, Likert, VAS) and invalid across-group comparisons: what we have learned from genetic variation in taste.</a> Food Quality Prefererences. 14 (2), 125-138 (2003).</li></ol>

这种方法的意义在于它采用了多学科的方法, 具有医学 (口试)、实验心理学 (味觉测试) 和遗传学 (验证步骤) 的特点。味觉信息可能会发展成为一种诊断和预后的工具, 因为味觉提供了一个窗口, 在身体其他地方的蛋白质功能。从实验心理学的角度看, 增加一个简单的考试可以识别不适合研究规范味觉功能的科目。从遗传学的角度来看, 这些程序提供了一种简单的方法来研究容易重现的基因型-表观关...

人类味觉知觉的衡量方法既可以是医疗保健的一部分, 也是生物医学研究的目标, 但与听觉和视力相比, 味觉却很少受到重视 (表 1)。从医学的角度来看, 当临床医生评估病人抱怨的味觉损失, 在大多数情况下, 实际损失的气味1, 这导致解雇的味觉损失作为一个罕见的, 往往是无效的提出投诉。味觉畸变 (dysgeusia) 是更常见的, 经常出现的副作用的药物或周围神经损伤2,3, 但两种形式都没有有效的治疗 (除了停止用药)。临床医生也忽略了味觉的丧失, 因为它迄今对自身的诊断和预后价值甚少。然而, 虽然味觉的测量是一个回水, 它现在可能进入主流医学与复兴的历史欣赏, 味觉可能是诊断或预后工具4,5。例如, 苦味知觉可以预测免疫功能6或患者愿意服用药物7。然而, 生物医学研究人员基本上忽略了味觉。这种疏忽可能在一定程度上反映了这样一个事实: 在理解这个感官系统的早期进展有它的根源在实验心理学8, 一个领域与那些在医学可能是相对地不熟悉的。此外, 对味觉的重新兴趣带来了标准化的味觉方法9 , 建立在早期的方法10, 而全面是漫长的, 不适合临床设置。最后, 对味觉措施的信心可能是微弱的, 因为受试者报告他们自己的经验和证实他们的观察一直是缺乏的。我们的希望是, 一个简单的措施, 调查人员或临床医生可以很容易地管理将获得在流行与两个成分。这里我们描述了一个简单的味觉检查协议, 它有三部分: 对口腔的评估, 味觉测试, 以及使用先天基因型的验证步骤。首先, 我们为这些程序提供了生物学背景, 将医学中的简单实践、实验心理学的感官测量和基因型和遗传学的反应验证结合起来。
味觉知觉开始在嘴里, 因此有效的味觉检查需要包括简要的临床评估为明显的口腔疾病, 红肿, 肿胀和其他变色。口腔含七个子体: 舌、牙龈、口底、颊粘膜、唇粘膜、硬腭、retromolar 三角。以往对人体味觉的研究集中在健康参与者或有明确疾病的人身上, 但随着味觉测试成为医学考试的常规, 重要的是记录口腔的状况作为手术的一部分。
舌头本身是一种肌肉结构, 包裹在粘膜中;点缀其背表面是乳突, 小凸起的结构, 使舌头其独特的纹理和含有味觉受体细胞。我们根据它们的形状对乳突进行分类: 蕈、丝状、叶酸和 circumvallate。蕈乳突 (FP) 位于 anterolaterally 舌上, 呈圆形, 有蘑菇状11。调查人员发表了几种有用的方法来量化 FP, 我们直接向读者提供了测量协议12、13、14、15、16的信息。叶酸的乳突, 形状像一本书的书页 (folia), 完全位于侧后舌表面11。Circumvallate 的乳突, 发现在舌底的沟终, 是大圆顶状结构包围的粘膜壁 (拉丁环, "环绕," +壁垒, "墙")11。最大量的乳突, 丝状, 长而薄, 不含味觉受体。
人的舌头解剖不同。虽然这种解剖变异的来源是未知的, 它部分地由先天遗传变异决定, 调查人员报告31% 卵双胞胎舌解剖学的一致性和60% 单卵双生子双胞胎17之间的一致性。在人群中, 乳突密度也不同, 虽然罕见, 至少有一个遗传性疾病 (家族性 dysautonomia) 导致先天性缺乏味觉乳癌18,19,20。因此, 在进行心理测试之前, 确认 FP 的存在是简要评估的一部分, 并注意到口腔疾病的舌头和证据的相对大小和颜色。
口感乳突含有刺激引发味觉感觉的感官细胞。人类能够感知至少五类的味道: 咸, 酸, 苦, 甜, 和鲜味。虽然咸, 甜, 和鲜味的味道信号的存在有价值的食物来源含有氯化钠, 葡萄糖和氨基酸, 分别, 苦味和酸味信号的存在潜在的毒素和酸的细菌分解食物, 分别和诱发厌恶行为21。咸和酸的味道是转基因通过活化离子通道发现在某些类型的味觉细胞, 虽然对盐转导的理解正在演变, 它可能需要 I 型细胞, 以及22,23。苦、甜、鲜味是由 G 蛋白偶联受体在 II. 型味觉细胞上活化而成, 每一种都能适应特定的口味。三种特殊受体亚基的 Heterodimers 传感器甜和鲜味, 而苦味化合物激活25种不同苦味受体24的组。这些苦味的受体可以反应多种苦味化合物, 一个单一的苦味化合物往往刺激超过一个受体25。尽管最近关于味觉的分子基础知识的扩展, 新的路径26和超越传统的五种口味品质 (例如, 钙27或脂肪酸28知觉) 的最新发现可能会在前面。
有至少两个令人惊讶的方面的味觉家庭的受体: 基因, 这些受体编码可以明显不同的 DNA 序列, 从而在人之间的功能, 和身体的许多组织表达这些基因21,29,30,31. 这些口外部位包括脑、甲状腺、上、下呼吸道和胃肠道, 其中许多人21、29、30、31。当口味感受器官在这些地点不参与口味知觉在传统感觉, 他们可能感觉地方化学环境29,32。例如, 上呼吸道纤毛上皮表达苦味受体 T2R38 (苦味受体 38), 它响应细菌产生的化合物, 并影响先天免疫反应32, 如增加黏膜纤毛间隙和抗微生物肽和一氧化氮的水平。这一发现对慢性鼻窦炎、慢性细菌感染疾病和上呼吸道和鼻窦炎症有医学意义。
与我们这里描述的味觉检查特别相关的是, T2R38 苦味受体, 编码的TAS2R38基因, 表现出遗传变异, 因此变化的味觉敏感性。对苦味化合物 phenylthiocarbamide (PTC) 的知觉差异首先由化学家亚瑟狐狸33描述;后来这个化合物被确定为 T2R38 受体34的激动剂。个体差异产生于 DNA 序列的TAS2R38基因, 其中有三单核苷酸多态性, 每一个产生氨基酸替代品 (A49P, A262V 和 I296V;A: 丙氨酸, P: 脯氨酸, V: 缬氨酸, I。两个常见的单体结果, PAV 和 AVI, 与 PAV/PAV 个人高度敏感的 PTC ("品酒师"), avi/avi 个人是相对不敏感 ("非品酒师"), 和异型的 AVI/PAV 个人在他们的灵敏度更可变35. 有更多的基因变异的例子影响苦味,例如, TAS2R19基因编码的味觉受体 T2R19, 同样表现出遗传变异和对苦味化合物的不同口味敏感性。奎宁36同样, TAS2R31的变异也会影响到高效甜味剂37、38、39的感知苦味。
在这里, 我们描述了一个快速的方法来表征病人的味觉, 利用高产量的协议, 在临床医学, 实验心理学和遗传学。

<table border="0" cellpadding="0" cellspacing="0" width="850">
	<tbody>
		<tr height="21">
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			<td style="width:124px;">DL-9223</td>
			<td style="width:259px;"></td>
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			<td height="21" style="height:21px;">UltraLite Pro headlight</td>
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			<td>AX2100BIF</td>
			<td></td>
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		<tr height="21">
			<td height="21" style="height:21px;">Millipore Q-Gard 2 water purification system</td>
			<td>EMB Millipore</td>
			<td style="width:124px;">QGARD00D2</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Denatonium benzoate&#160;</td>
			<td>Sigma Aldrich</td>
			<td>D5765</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:307px;">Phenylthiocarbamide</td>
			<td>Sigma Aldrich</td>
			<td>P7629</td>
			<td></td>
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			<td height="21" style="height:21px;width:307px;">Quinine hydrochloride dihydrate</td>
			<td>Sigma Aldrich</td>
			<td>Q1125</td>
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			<td height="21" style="height:21px;width:307px;">Sodium Chloride</td>
			<td>Sigma Aldrich</td>
			<td>S1679</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:307px;">Sucrose</td>
			<td>Sigma Aldrich</td>
			<td>S0389</td>
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			<td height="21" style="height:21px;">Glass scintillation vials</td>
			<td>Thomas Scientific</td>
			<td>1230L59</td>
			<td>Same as Wheaton catalog no. 986580</td>
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			<td height="21" style="height:21px;">Oragene Discover OGR-500 DNA collection kit</td>
			<td>DNA Genotek</td>
			<td style="width:124px;">OGR-500</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">prepIT L2P Protocol reagents</td>
			<td>DNA Genotek</td>
			<td>PT-L2P-5</td>
			<td></td>
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			<td height="21" style="height:21px;">rs713598 TaqMan SNP genotyping assay</td>
			<td>ThermoFisher Scientific</td>
			<td>C___8876467_10</td>
			<td></td>
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			<td height="21" style="height:21px;">rs1726866 TaqMan SNP genotyping assay</td>
			<td>ThermoFisher Scientific</td>
			<td>C___9506827_10</td>
			<td></td>
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		<tr height="21">
			<td height="21" style="height:21px;">rs10246939 TaqMan SNP genotyping assay</td>
			<td>ThermoFisher Scientific</td>
			<td>C___9506826_10</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">rs10772420 TaqMan SNP genotyping assay</td>
			<td>ThermoFisher Scientific</td>
			<td>C___1317426_10</td>
			<td></td>
		</tr>
	</tbody>
</table>

taste exam: a brief and validated test

味觉在医学和生物医学研究中的日益重要, 以及对其遗传基础的新认识, 促使我们在两方面补充了经典的味觉测试方法。首先, 我们解释如何做一个简短的评价口腔, 包括舌头, 以确保味觉乳突存在, 并注意到有关疾病的证据。其次, 通过比较感知苦味强度和先天受体基因型的报告, 利用遗传学来验证味觉测试数据。基因型客观测度与味觉体验主观报告之间的不一致可以识别数据收集错误、分心的主题或那些不理解或遵循指令的人。我们的期望是快速有效的味觉测试可以说服研究人员和临床医生定期评估味觉, 使味觉测试与听力和视力测试一样普遍。最后, 由于许多组织的身体表达味觉受体, 味觉反应可能提供一个代理的组织敏感性在其他地方的身体, 从而, 作为一个快速的, 护理点测试指导诊断和研究工具, 评估味觉受体蛋白质功能。

从味觉测试的结果已汇集为所有被评估的科目 (n = 840), 并提出后, 分离的基因型。完整的数据集可在 https://carayata.shinyapps.io/TasteBoxplots/中访问, 可以对评估的每个 tastant 和TAS2R38和TAS2R19基因型进行审查。结果证实了TAS2R38受体基因型 (图 3) 中 PTC 的知觉味觉差异的存在。PTC 强度的评分在TAS2R38基因型 (avi/avi, 0.86) 有显著差异;AVI/P...

Watch this Scientific Journal Video about Taste Exam: A Brief and Validated Test at JoVE.com

Taste Exam: A Brief and Validated Test

味觉考试: 一个简短的验证测试

该协议测量人的味觉反应, 包括一个简短的解剖评估, 短的味觉测试, 和一个验证方法使用的主题的感觉和味觉受体基因型。

The emerging importance of taste in medicine and biomedical research, and new knowledge about its genetic underpinnings, has motivated us to supplement ...

This method can help answer key questions in the medical and sensory field about each person's sense of taste. The main advantage of this technique is its brevity and suitability for biomedical research. The implications of this technique extend towards the diagnosis and treatment of chronic rhino sinusitis because taste receptors are part of the innate immune system.I will be demonstrating the procedure on our lab member David and Lauren will be making the taste solutions. Begin by instructing the subject to open their mouth. Use a light to illuminate the oral cavity and examine the seven sub-sites of the area.Here the dorsal tongue is easily visible. Using a tongue depressor to depress the tongue the posterior pharynx becomes visible. Next lateralizing the tongue allows exposure of the left retromolar trigone and the left buccal mucosa.Here the anterior gingiva and the labial mucosa are visualized. As the subject's tongue is lifted the ventral tongue surface becomes visible. And this allows for examination of the subjects floor of mouth.The tongue is then lateralized again to examine the right retromolar trigone and the right buccal mucosa. And lastly the hard and soft palate are visualized. Note lesions, abrasions, and masses or signs of inflammation.Use a light source to visualize the dorsal surface of the tongue and identify the presence or absence of fungiform papillae or smooth surface of the tongue. Finally write down the results of oral cavity examination before proceeding with taste testing. Begin by preparing the taste solutions using a volumetric flask for each to ensure precision of concentrations.Dissolve samples using ultra pure water. Wrap any light sensitive solutions with foil to reduce exposure to light. Then store the taste solutions at four degrees Celsius.To identify common errors in solution preparation fill one tasting cup with the old solution and one with the new solution. Taste each solution to verify they are identical in strength. Next, label vial caps with a circular sticker according to the order of presentation and a color code.In order to match the vial labels with the labels on the taste questionnaire. Package samples by placing them into their respective carriers. Next prepare the taste questionnaire using a category scale for rating taste intensity and a forced choice for identifying the taste quality of each tastant.Lastly, place circular labels of the appropriate color and number next to the appropriate sample in the taste questionnaire. Provide the subject with the sample box, a bottle of water, an empty cup, pen, and taste questionnaire containing entries for 12 samples. Explain the testing procedure and inform the subject that they will be asked to rate both the intensity and quality of each tastant.Let them know that they may not experience all qualities. Start the test by asking the subject to rinse their mouth twice with water and spit it out in the cup provided. Have them pour all of sample one into their mouth and hold it there for five seconds before spitting the solution into the cup.Tell them not to gargle or swallow the solution. Then instruct the subject to circle one of the 13 vertical lines corresponding with the sample's intensity. On a scale of 0 to 12.From no intensity at all to extremely intense. And choose a single quality to describe the taste. Next ask the subject to rinse their mouth with water twice before proceeding to the next sample.Observe the subject tasting and rating sample one of water. Should the rating deviate from no intensity at all and no flavor, reiterate the questionnaire instructions before allowing the test to proceed. After all samples have been tasted review the finished questionnaire for completeness.Finally, score intensity ratings on a scale of 0 to 12 from the vertical lines that the subject circled. And average the two intensity ratings for each tastant for later analysis. Results of the taste test confirm the existence of perceptual taste differences for the bitter compound, Phenylthiocarbamide or PTC among subjects grouped by the TAS2R38 receptor genotype.Ratings of PTC intensity are significantly different across three genotypes. The motivation behind this study was to try to assess or to develop a rapid point of service exam that we could do in the clinic that would assess the function of this receptor that we believe plays a role in the development of chronic sinusitis. The idea here is could we use this taste test to predict which of our patients are at high risk for developing sinusitis and more importantly, which patients are good surgical candidates for us to do our sinus surgery on, or which ones will do poorly with our sinus surgery.So we're trying to use this taste test to prognosticate patient's sinal-nasal disease. Once that we went through all of the taste testing we confirmed that by genotyping the patients. And as you can see in figure three for the most part the patient's genotype follows the pattern of their phenotype.Meaning the more bitter they tasted they tended to be dominant for this receptor. However, there are some outliers. Showing that there are functional homozygotes, PAV/PAVs that said that they didn't taste PTC and on the flip side of that there were some nonfunctional AVI/AVI individuals that tasted PTC with bitterness.So that means that whatever taste test we do develop if there are patients that are not fulfilling our expectations that we probably wanna confirm the taste test by genotyping them for T2R38. Once mastered the exam and taste test can be performed in under 30 minutes. After watching this video you should have an understanding of how to perform an oral exam, note evidence of disease and perform a brief taste test.

Research

JoVE Journal

Medicine

Making Sense of Listening: The IMAP Test Battery

The ability to hear is only the first step towards making sense of the range of information contained in an auditory signal. Of equal importance are the abilities to extract and use the information encoded in the auditory signal. We refer to these as listening skills (or auditory processing AP). Deficits in these skills are associated with delayed language and literacy development, though the nature of the relevant deficits and their causal connection with these delays is hotly debated.
When a child is referred to a health professional with normal hearing and unexplained difficulties in listening, or associated delays in language or literacy development, they should ideally be assessed with a combination of psychoacoustic (AP) tests, suitable for children and for use in a clinic, together with cognitive tests to measure attention, working memory, IQ, and language skills. Such a detailed examination needs to be relatively short and within the technical capability of any suitably qualified professional. Current tests for the presence of AP deficits tend to be poorly constructed and inadequately validated within the normal population. They have little or no reference to the presenting symptoms of the child, and typically include a linguistic component. Poor performance may thus reflect problems with language rather than with AP. To assist in the assessment of children with listening difficulties, pediatric audiologists need a single, standardized child-appropriate test battery based on the use of language-free stimuli.
We present the IMAP test battery which was developed at the MRC Institute of Hearing Research to supplement tests currently used to investigate cases of suspected AP deficits. IMAP assesses a range of relevant auditory and cognitive skills and takes about one hour to complete. It has been standardized in 1500 normally-hearing children from across the UK, aged 6-11 years. Since its development, it has been successfully used in a number of large scale studies both in the UK and the USA. IMAP provides measures for separating out sensory from cognitive contributions to hearing. It further limits confounds due to procedural effects by presenting tests in a child-friendly game-format. Stimulus-generation, management of test protocols and control of test presentation is mediated by the IHR-STAR software platform. This provides a standardized methodology for a range of applications and ensures replicable procedures across testers. IHR-STAR provides a flexible, user-programmable environment that currently has additional applications for hearing screening, mapping cochlear implant electrodes, and academic research or teaching.

A test battery (IMAP) for performing an in-depth assessment of auditory and cognitive abilities contributing to listening skills is described. It is quick to administer, child-friendly and free from linguistic confounds. Stimulus generation and protocol management are controlled via a software platform (IHR-STAR) to ensure replicable procedures.

听力：IMAP测试电池的决策意识

The ability to hear is only the first step towards making sense of the range of information contained in an auditory signal. Of equal importance are the ...

科研

医学

Technique to Collect Fungiform (Taste) Papillae from Human Tongue

The sense of taste is critical for human life. It informs the body about the quality of food that will be potentially ingested and stimulates metabolic processes that prepare the alimentary canal for digestion. Steady progress is being made towards understanding the early biochemical and molecular events underlying taste transduction (for a review, Breslin and Spector, 20081). However, progress to date has largely resulted from animal models. Yet, since marked differences in receptor specificity and receptor density vary among species, human taste transduction will only be understood by using human taste tissue. Here we describe a biopsy technique to collect human fungiform papillae, visible as rounded pink anterior structures, about 0.5 mm in diameter that contain taste buds. These biopsied papillae are used for several purposes including the isolation of viable taste bud cells, in situ hybridization, immunohistochemistry and, through techniques of molecular biology, the identification of taste-specific novel proteins.

Technique to Collect Fungiform Taste Papillae from Human Tongue

Knowledge of molecular mechanisms underlying gustatory transduction has recently enjoyed significant advances, largely due to using animal models. However, the wide diversity in taste sensitivity and specificity among mammals warrants studies in human tissue. We describe a biopsy technique to collect living taste cells from the papillae on human tongue.

技术收集人舌菌状（味道）乳头

The sense of taste is critical for human life. It informs the body about the quality of food that will be potentially ingested and stimulates metabolic ...

The Trier Social Stress Test Protocol for Inducing Psychological Stress

This article demonstrates a psychological stress protocol for use in a laboratory setting. Protocols that allow researchers to study the biological pathways of the stress response in health and disease are fundamental to the progress of research in stress and anxiety.1 Although numerous protocols exist for inducing stress response in the laboratory, many neglect to provide a naturalistic context or to incorporate aspects of social and psychological stress. Of psychological stress protocols, meta-analysis suggests that the Trier Social Stress Test (TSST) is the most useful and appropriate standardized protocol for studies of stress hormone reactivity.2 In the original description of the TSST, researchers sought to design and evaluate a procedure capable of inducing a reliable stress response in the majority of healthy volunteers.3 These researchers found elevations in heart rate, blood pressure and several endocrine stress markers in response to the TSST (a psychological stressor) compared to a saline injection (a physical stressor).3 Although the TSST has been modified to meet the needs of various research groups, it generally consists of a waiting period upon arrival, anticipatory speech preparation, speech performance, and verbal arithmetic performance periods, followed by one or more recovery periods. The TSST requires participants to prepare and deliver a speech, and verbally respond to a challenging arithmetic problem in the presence of a socially evaluative audience.3 Social evaluation and uncontrollability have been identified as key components of stress induction by the TSST.4 In use for over a decade, the goal of the TSST is to systematically induce a stress response in order to measure differences in reactivity, anxiety and activation of the hypothalamic-pituitary-adrenal (HPA) or sympathetic-adrenal-medullary (SAM) axis during the task.1 Researchers generally assess changes in self-reported anxiety, physiological measures (e.g. heart rate), and/or neuroendocrine indices (e.g. the stress hormone cortisol) in response to the TSST. Many investigators have adopted salivary sampling for stress markers such as cortisol and alpha-amylase (a marker of autonomic nervous system activation) as an alternative to blood sampling to reduce the confounding stress of blood-collection techniques. In addition to changes experienced by an individual completing the TSST, researchers can compare changes between different treatment groups (e.g. clinical versus healthy control samples) or the effectiveness of stress-reducing interventions.1

This article describes a protocol for inducing psychological stress in participants, which enables researchers to measure psychological, physiological and neuroendocrine responses to stress within single participants or between groups.

特里尔社会压力诱发心理应激的测试协议

This article demonstrates a psychological stress protocol for use in a laboratory setting.  Protocols that allow researchers to study the biological ...

The &alpha;-test: Rapid Cell-free CD4 Enumeration Using Whole Saliva

There is an urgent need for affordable CD4 enumeration to monitor HIV disease. CD4 enumeration is out of reach in resource-limited regions due to the time and temperature restrictions, technical sophistication, and cost of reagents, in particular monoclonal antibodies to measure CD4 on blood cells, the only currently acceptable method. A commonly used cost-saving and time-saving laboratory strategy is to calculate, rather than measure certain blood values. For example, LDL levels are calculated using the measured levels of total cholesterol, HDL, and triglycerides1. Thus, identification of cell-free correlates that directly regulate the number of CD4+ T cells could provide an accurate method for calculating CD4 counts due to the physiological relevance of the correlates.
The number of stem cells that enter blood and are destined to become circulating CD4+ T cells is determined by the chemokine CXCL12 and its receptor CXCR4 due to their influence on locomotion2. The process of stem cell locomotion into blood is additionally regulated by cell surface human leukocyte elastase (HLECS) and the HLECS-reactive active &alpha;1proteinase inhibitor (&alpha;1PI, &alpha;1antitrypsin, SerpinA1)3. In HIV-1 disease, &alpha;1PI is inactivated due to disease processes 4. In the early asymptomatic categories of HIV-1 disease, active &alpha;1PI was found to be below normal in 100% of untreated HIV-1 patients (median=12 &mu;M, and to achieve normal levels during the symptomatic categories4, 5. This pattern has been attributed to immune inactivation, not to insufficient synthesis, proteolytic inactivation, or oxygenation. We observed that in HIV-1 subjects with &gt;220 CD4 cells/&mu;l, CD4 counts were correlated with serum levels of active &alpha;1PI (r2=0.93, p&lt;0.0001, n=26) and inactive &alpha;1PI (r2=0.91, p&lt;0.0001, n=26) 5. Administration of &alpha;1PI to HIV-1 infected and uninfected subjects resulted in dramatic increases in CD4 counts suggesting &alpha;1PI participates in regulating the number of CD4+ T cells in blood 3.
With stimulation, whole saliva contains sufficient serous exudate (plasma containing proteinaceous material that passes through blood vessel walls into saliva) to allow measurement of active &alpha;1PI and the correlation of this measurement is evidence that it is an accurate method for calculating CD4 counts. Briefly, sialogogues such as chewing gum or citric acid stimulate the exudation of serum into whole mouth saliva. After stimulating serum exudation, the activity of serum &alpha;1PI in saliva is measured by its capacity to inhibit elastase activity. Porcine pancreatic elastase (PPE) is a readily available inexpensive source of elastase. PPE binds to &alpha;1PI forming a one-to-one complex that prevents PPE from cleaving its specific substrates, one of which is the colorimetric peptide, succinyl-L-Ala-L-Ala-L-Ala-p-nitroanilide (SA3NA). Incubating saliva with a saturating concentration of PPE for 10 min at room temperature allows the binding of PPE to all the active &alpha;1PI in saliva. The resulting inhibition of PPE by active &alpha;1PI can be measured by adding the PPE substrate SA3NA. (Figure 1). Although CD4 counts are measured in terms of blood volume (CD4 cells/&mu;l), the concentration of &alpha;1PI in saliva is related to the concentration of serum in saliva, not to volume of saliva since volume can vary considerably during the day and person to person6. However, virtually all the protein in saliva is due to serum content, and the protein content of saliva is measurable7. Thus, active &alpha;1PI in saliva is calculated as a ratio to saliva protein content and is termed the &alpha;1PI Index. Results presented herein demonstrate that the &alpha;1PI Index provides an accurate and precise physiologic method for calculating CD4 counts.

The &amp;#945;-test: Rapid Cell-free CD4 Enumeration Using Whole Saliva

A CD4 enumeration method, the &#x03B1;-test, is described which uses whole saliva to provide rapid and accurate CD4 counts. The &alpha;-test costs pennies and eliminates the need for technical training, costly reagents such as monoclonal antibodies, instrumentation, refrigeration, transport of samples, as well as collection and handling of blood.

测试：α-细胞快速免费的CD4计数，使用全唾液

There is an urgent need for affordable CD4 enumeration to monitor HIV disease. CD4 enumeration is out of reach in resource-limited regions due to the time ...

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System

The use of modern endoscopy for research purposes has greatly facilitated our understanding of gastrointestinal pathologies. In particular, experimental endoscopy has been highly useful for studies that require repeated assessments in a single laboratory animal, such as those evaluating mechanisms of chronic inflammatory bowel disease and the progression of colorectal cancer. However, the methods used across studies are highly variable. At least three endoscopic scoring systems have been published for murine colitis and published protocols for the assessment of colorectal tumors fail to address the presence of concomitant colonic inflammation. This study develops and validates a reproducible endoscopic scoring system that integrates evaluation of both inflammation and tumors simultaneously. This novel scoring system has three major components: 1) assessment of the extent and severity of colorectal inflammation (based on perianal findings, transparency of the wall, mucosal bleeding, and focal lesions), 2) quantitative recording of tumor lesions (grid map and bar graph), and 3) numerical sorting of clinical cases by their pathological and research relevance based on decimal units with assigned categories of observed lesions and endoscopic complications (decimal identifiers). The video and manuscript presented herein were prepared, following IACUC-approved protocols, to allow investigators to score their own experimental mice using a well-validated and highly reproducible endoscopic methodology, with the system option to differentiate distal from proximal endoscopic colitis (D-PECS).

Over the past few years, new generation endoscopes have emerged as important diagnostic research aids for evaluating murine colitis and colorectal tumors. We present herein a detailed protocol for endoscopic assessment of inflammation and colorectal tumors in mice, as well as a novel scoring system that uses decimal identifiers to document the endoscopic severity of colitis and colorectal tumors.

灵活的结肠镜检查在小鼠使用经过验证的内镜评分系统来评估结肠炎和结肠直肠肿瘤的严重程度

The use of modern endoscopy for research purposes has greatly facilitated our understanding of gastrointestinal pathologies. In particular, experimental ...

The Multiple Sclerosis Performance Test (MSPT): An iPad-Based Disability Assessment Tool

Precise measurement of neurological and neuropsychological impairment and disability in multiple sclerosis is challenging. We report a new test, the Multiple Sclerosis Performance Test (MSPT), which represents a new approach to quantifying MS related disability. The MSPT takes advantage of advances in computer technology, information technology, biomechanics, and clinical measurement science. The resulting MSPT represents a computer-based platform for precise, valid measurement of MS severity. Based on, but extending the Multiple Sclerosis Functional Composite (MSFC), the MSPT provides precise, quantitative data on walking speed, balance, manual dexterity, visual function, and cognitive processing speed. The MSPT was tested by 51 MS patients and 49 healthy controls (HC). MSPT scores were highly reproducible, correlated strongly with technician-administered test scores, discriminated MS from HC and severe from mild MS, and correlated with patient reported outcomes. Measures of reliability, sensitivity, and clinical meaning for MSPT scores were favorable compared with technician-based testing. The MSPT is a potentially transformative approach for collecting MS disability outcome data for patient care and research. Because the testing is computer-based, test performance can be analyzed in traditional or novel ways and data can be directly entered into research or clinical databases. The MSPT could be widely disseminated to clinicians in practice settings who are not connected to clinical trial performance sites or who are practicing in rural settings, drastically improving access to clinical trials for clinicians and patients. The MSPT could be adapted to out of clinic settings, like the patient&#8217;s home, thereby providing more meaningful real world data. The MSPT represents a new paradigm for neuroperformance testing. This method could have the same transformative effect on clinical care and research in MS as standardized computer-adapted testing has had in the education field, with clear potential to accelerate progress in clinical care and research.

The Multiple Sclerosis Performance Test MSPT: An iPad-Based Disability Assessment Tool

Precise measurement of neurological and neuropsychological impairment and disability in multiple sclerosis is challenging. We report methodologic details on a new test, the Multiple Sclerosis Performance Test (MSPT). This new approach to the objective of quantification of MS related disability provides a computer-based platform for precise, valid measurement of MS severity.

多发性硬化症性能测试（MSPT）：一个iPad为基础的残疾评估工具

Precise measurement of neurological and neuropsychological impairment and disability in multiple sclerosis is challenging. We report a new test, the ...

Determining The Electromyographic Fatigue Threshold Following a Single Visit Exercise Test

Theoretically, the electromyographic (EMG) fatigue threshold is the exercise intensity an individual can maintain indefinitely without the need to recruit more motor units which is associated with an increase in the EMG amplitude. Although different protocols have been used to estimate the EMG fatigue threshold they require multiple visits which are impractical for a clinical setting. Here, we present a protocol for estimating the EMG fatigue threshold for cycle ergometry which requires a single visit. This protocol is simple, convenient, and completed within 15-20 min, therefore, has the potential to be translated into a tool that clinicians can use in exercise prescription.

This protocol describes the electromyographic fatigue threshold which demarcates between nonfatiguing and fatiguing exercise workloads. This information could be used to develop a more individualized training program.

确定肌电疲劳阈值以下单次访问运动试验

Theoretically, the electromyographic (EMG) fatigue threshold is the exercise intensity an individual can maintain indefinitely without the need to recruit ...

A Rat Carotid Balloon Injury Model to Test Anti-vascular Remodeling Therapeutics

The rat carotid balloon injury is a well-established surgical model that has been used to study arterial remodeling and vascular cell proliferation. It is also a valuable model system to test, and to evaluate therapeutics and drugs that negate maladaptive remodeling in the vessel. The injury, or barotrauma, in the vessel lumen caused by an inflated balloon via an inserted catheter induces subsequent neointimal growth, often leading to hyperplasia or thickening of the vessel wall that narrows, or obstructs the lumen. The method described here is sufficiently sensitive, and the results can be obtained in relatively short time (2 weeks after the surgery). The efficacy of the drug or therapeutic against the induced-remodeling can be evaluated either by the post-mortem pathological and histomorphological analysis, or by ultrasound sonography in live animals. In addition, this model system has also been used to determine the therapeutic window or the time course of the administered drug. These studies can leadto the development of a better administrative strategy and a better therapeutic outcome. The procedure described here provides a tool for translational studies that bring drug and therapeutic candidates from bench research to clinical applications.

The rat carotid balloon injury model described below allows researchers to evaluate drugs or therapeutics that negate injury-induced arterial hyperplasia. Detailed pre-surgical preparation, surgical procedure, and post-surgical cares of the animal are described.

大鼠颈动脉球囊损伤模型试验抗血管重建治疗

The rat carotid balloon injury is a well-established surgical model that has been used to study arterial remodeling and vascular cell proliferation. It is ...

Ultrasound Assessment of Endothelial Function: A Technical Guideline of the Flow-mediated Dilation Test

Cardiovascular disease is the primary cause of mortality and a major cause of disability worldwide. The dysfunction of the vascular endothelium is a pathological condition characterized mainly by a disruption in the balance between vasodilator and vasoconstrictor substances and is proposed to play an important role in the development of atherosclerotic cardiovascular disease. Therefore, a precise evaluation of endothelial function in humans represents an important tool that could help better understand the etiology of multiple cardio-centric pathologies.
Over the past twenty-five years, many methodological approaches have been developed to provide an assessment of endothelial function in humans. Introduced in 1989, the FMD test incorporates a forearm occlusion and subsequent reactive hyperemia that promotes nitric oxide production and vasodilation of the brachial artery. The FMD test is now the most widely utilized, non-invasive, ultrasonic assessment of endothelial function in humans and has been associated with future cardiovascular events.
Although the FMD test could have clinical utility, it is a physiological assessment that has inherited several confounding factors that need to be considered. This article describes a standardized protocol for determining FMD including the recommended methodology to help minimize the physiological and technical issues and improve the precision and reproducibility of the assessment.

The flow mediated dilation (FMD) test is the most commonly utilized, non-invasive, ultrasound assessment of endothelial function in humans. Although the FMD test has been related with the prediction of future cardiovascular disease and events, it is a physiological assessment with many inherent confounding factors that need to be considered.

血管内皮功能的超声评估：血流介导的舒张试验的技术指导原则

Cardiovascular disease is the primary cause of mortality and a major cause of disability worldwide. The dysfunction of the vascular endothelium is a ...

A Blood-based Test for the Detection of ROS1 and RET Fusion Transcripts from Circulating Ribonucleic Acid Using Digital Polymerase Chain Reaction

We have developed novel methods for the isolation and characterization of tumor-derived circulating ribonucleic acid (cRNA) for blood-based liquid biopsy. Robust detection of cRNA recovered from blood represents a solution to a critical unmet need in clinical diagnostics. The test begins with the collection of whole blood into blood collection tubes containing preservatives that stabilize cRNA. Cell-free, exosomal, and platelet-associated RNA is isolated from plasma in this test system. The cRNA is reverse transcribed to complementary DNA (cDNA) and amplified using digital polymerase chain reaction (dPCR). Samples are evaluated for both the target biomarker as well as a control gene. Test validation included limit of detection, accuracy, and robustness studies with analytic samples. The method developed as a result of these studies reproducibly detect multiple fusion variants for ROS1 (C-Ros proto-oncogene 1; 8 variants) and RET (rearranged during transfection proto-oncogene; 8 variants). The sample processing workflow has been optimized so that test results can consistently be generated within 72 hours of sample receipt.

Detection of circulating ribonucleic acid (cRNA) from blood is an unmet need in clinical diagnostics. Here we describe methods that characterize cRNA from non-small cell lung cancer patients using sensitive and specific digital polymerase chain reaction. The tests meet design requirements to detect fusion variants within 72 hours.

用数字聚合酶链反应检测循环核糖核酸 ROS1 和 RET 融合记录的血液检测方法

We have developed novel methods for the isolation and characterization of tumor-derived circulating ribonucleic acid (cRNA) for blood-based liquid biopsy. ...