Name: sampling strategies and processing of biobank tissue samples from porcine biomedical models
Uploaded: 2018-03-06T14:00:00
Description: Watch this Scientific Journal Video about Sampling Strategies and Processing of Biobank Tissue Samples from Porcine Biomedical Models at JoVE.com

Авторы благодарят Лиза Pichl за отличную техническую помощь.

Все методы, описанные здесь использовать образцы тканей, полученных от мертвых животных и полностью соответствуют нормам немецкой правовой защиты животных.
1. Volumetry
<ol><li>Погружение техника для определения плотности ткани/орган (Рисунок 1 </st...

<ol>
	<li>Aigner, 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=Transgenic+pigs+as+models+for+translational+biomedical+research.">Transgenic pigs as models for translational biomedical research.</a> J Mol. Med. 88, 653-664 (2010).</li><li>Blutke, 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=The+Munich+MIDY+Pig+Biobank:+A+unique+resource+for+studying+organ+crosstalk+in+diabetes.">The Munich MIDY Pig Biobank: A unique resource for studying organ crosstalk in diabetes.</a> Mol Metab. 6, 931-940 (2017).</li><li>Klymiuk, 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=Dystrophin-deficient+pigs+provide+new+insights+into+the+hierarchy+of+physiological+derangements+of+dystrophic+muscle.">Dystrophin-deficient pigs provide new insights into the hierarchy of physiological derangements of dystrophic muscle.</a> Hum Mol Genet. 22, 4368-4382 (2013).</li><li>Klymiuk, N., Seeliger, F., Bohlooly, Y. M., Blutke, A., Rudmann, D. G., Wolf, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Tailored+pig+models+for+preclinical+efficacy+and+safety+testing+of+targeted+therapies.">Tailored pig models for preclinical efficacy and safety testing of targeted therapies.</a> Toxicol Pathol. 44, 346-357 (2016).</li><li>Renner, 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=Permanent+neonatal+diabetes+in+INSC94Y+transgenic+pigs.">Permanent neonatal diabetes in INSC94Y transgenic pigs.</a> Diabetes. 62, 1505-1511 (2013).</li><li>Abbott, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Inside+the+first+pig+biobank.">Inside the first pig biobank.</a> Nature. 519, 397-398 (2015).</li><li>Albl, 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=Tissue+sampling+guides+for+porcine+biomedical+models.">Tissue sampling guides for porcine biomedical models.</a> Toxicol Pathol. 44, 414-420 (2016).</li><li>Gundersen, H. J. G., Mirabile, R., Brown, D., Boyce, R. W., Haschek, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Stereological+principles+and+sampling+procedures+for+toxicologic+pathologists.">Stereological principles and sampling procedures for toxicologic pathologists.</a> Haschek and Rousseaux's Handbook of Toxicologic Pathology. , 215-286 (2013).</li><li>Howard, C. V., Reed, 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=.">.</a> Unbiased Stereology: Three-Dimensional Measurement in Microscopy. , 1-277 (2005).</li><li>Mattfeldt, T., Mall, G., Gharehbaghi, H., Moller, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Estimation+of+surface+area+and+length+with+the+orientator.">Estimation of surface area and length with the orientator.</a> J Microsc. 159, 301-317 (1990).</li><li>Nyengaard, J. R., Gundersen, H. 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=The+isector:+A+simple+and+direct+method+for+generating+isotropic,+uniform+random+sections+from+small+specimens.">The isector: A simple and direct method for generating isotropic, uniform random sections from small specimens.</a> J Microsc. 165, 427-431 (1992).</li><li>Tschanz, S., Schneider, J. P., Knudsen, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Design-based+stereology:+Planning,+volumetry+and+sampling+are+crucial+steps+for+a+successful+study.">Design-based stereology: Planning, volumetry and sampling are crucial steps for a successful study.</a> Ann Anat. 196, 3-11 (2014).</li><li>Dorph-Petersen, K. A., Nyengaard, J. R., Gundersen, H. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Tissue+shrinkage+and+unbiased+stereological+estimation+of+particle+number+and+size.">Tissue shrinkage and unbiased stereological estimation of particle number and size.</a> J Microsc. 204, 232-246 (2001).</li><li>Mattfeldt, T., Doerr, W., Leonhardt, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Stereologische+Methoden+in+der+Pathologie+[Stereologic+methods+in+pathology].">Stereologische Methoden in der Pathologie [Stereologic methods in pathology].</a> Normale und pathologische Anatomie. , (1990).</li><li>Gundersen, H. J., Jensen, E. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+efficiency+of+systematic+sampling+in+stereology+and+its+prediction.">The efficiency of systematic sampling in stereology and its prediction.</a> J Microsc. 147, 229-263 (1987).</li><li>Scherle, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+simple+method+for+volumetry+of+organs+in+quantitative+stereology.">A simple method for volumetry of organs in quantitative stereology.</a> Mikroskopie. 26, 57-60 (1970).</li><li>Nielsen, K. K., Andersen, C. B., Kromann-Andersen, B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+comparison+between+the+effects+of+paraffin+and+plastic+embedding+of+the+normal+and+obstructed+minipig+detrusor+muscle+using+the+optical+disector.">A comparison between the effects of paraffin and plastic embedding of the normal and obstructed minipig detrusor muscle using the optical disector.</a> J Urol. 154, 2170-2173 (1995).</li><li>Schneider, J. P., Ochs, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Alterations+of+mouse+lung+tissue+dimensions+during+processing+for+morphometry:+a+comparison+of+methods.">Alterations of mouse lung tissue dimensions during processing for morphometry: a comparison of methods.</a> Am J Physiol Lung Cell Mol Physiol. 306, L341-L350 (2014).</li><li>von Bartheld, C. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Distribution+of+particles+in+the+z-axis+of+tissue+sections:+Relevance+for+counting+methods.">Distribution of particles in the z-axis of tissue sections: Relevance for counting methods.</a> NeuroQuantology. 10, 66-75 (2012).</li><li>Baddeley, A. J., Gundersen, H. J., Cruz-Orive, 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=Estimation+of+surface+area+from+vertical+sections.">Estimation of surface area from vertical sections.</a> J microsc. 142, 259-276 (1986).</li><li>Blutke, A., Schneider, M. R., Wolf, E., Wanke, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Growth+hormone+(GH)-transgenic+insulin-like+growth+factor+1+(IGF1)-deficient+mice+allow+dissociation+of+excess+GH+and+IGF1+effects+on+glomerular+and+tubular+growth.">Growth hormone (GH)-transgenic insulin-like growth factor 1 (IGF1)-deficient mice allow dissociation of excess GH and IGF1 effects on glomerular and tubular growth.</a> Physiol Rep. 4, e12709 (2016).</li><li>Hermanns, W., Liebig, K., Schulz, L. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Postembedding+immunohistochemical+demonstration+of+antigen+in+experimental+polyarthritis+using+plastic+embedded+whole+joints.">Postembedding immunohistochemical demonstration of antigen in experimental polyarthritis using plastic embedded whole joints.</a> Histochemistry. 73, 439-446 (1981).</li><li>Böck, 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> Romeis Mikroskopische Technik. , 1-697 (1989).</li><li>Suvarna, K. S., Layton, C., Bancroft, J. D., Suvarna, K. S., Layton, C., Bancroft, J. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Bancroft's theory and practice of histological techniques. , 1-654 (2013).</li><li>Knust, J., Ochs, M., Gundersen, H. J., Nyengaard, J. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Stereological+estimates+of+alveolar+number+and+size+and+capillary+length+and+surface+area+in+mice+lungs.">Stereological estimates of alveolar number and size and capillary length and surface area in mice lungs.</a> Anat Rec (Hoboken). 292, 113-122 (2009).</li><li>Nyengaard, J. R., Gundersen, H. 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=Sampling+for+stereology+in+lungs.">Sampling for stereology in lungs.</a> Eur Respir Rev. 15, 107-114 (2006).</li><li>Junatas, K. L., 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=Stereological+analysis+of+size+and+density+of+hepatocytes+in+the+porcine+liver.">Stereological analysis of size and density of hepatocytes in the porcine liver.</a> J Anat. 230, 575-588 (2017).</li></ol>

Поколения биобанке образца коллекций из свиных животных моделей требуются надежные методы и протоколы для определения объемов органа/ткани, воспроизводимые поколения представителя, подходит для широкого круга образцов избыточной ткани анализ различных методов и для рандомизации ор...

<table>
	<tbody>
		<tr>
			<td>Agar</td>
			<td>Carl Roth GmbH, Germany</td>
			<td>Agar (powder), Cat.: 5210.3</td>
			<td>Dissolve approximately 1 g of agar in 10 ml cold water in a glass or plastic beaker, heat in microwave-oven at 700 W, boil the solution twice with rigorous stirring. Cast into mold while still warm and let solidify. Caution: While handling with hot liquid agar, wear protective goggles and gloves.</td>
		</tr>
		<tr>
			<td>Caliper</td>
			<td>Hornbach Baumarkt GmbH, Bornheim, Germany</td>
			<td>Schieblehre Chrom/Vernickelt 120 mm Cat.: 3664902</td>
			<td>Any kind of caliper (mechanical or electronic) will do as well.</td>
		</tr>
		<tr>
			<td>Casting molds (metal)</td>
			<td>Engelbrecht Medizin &#38; Labortechnik, Ederm&#252;nde, Germany</td>
			<td>Einbettsch&#228;lchen aus Edelstahl, 14 x 24 x 5 mm, Cat.: 14302b</td>
			<td>Any other kind of metal casting mold used for paraffin-embedding will do as well.</td>
		</tr>
		<tr>
			<td>Copy templates of cross grids (5mm - 6 cm)</td>
			<td>n.a.</td>
			<td>n.a.</td>
			<td>Copy templates of cross grids (5mm - 6 cm) are provided in the supplemental data file of Albl et al.&#160; Toxicol Pathol. 44, 414-420, doi: 10.1177/0192623316631023 (2016)</td>
		</tr>
		<tr>
			<td>Copy templates of equiangular and cosine-weighted circles</td>
			<td>n.a.</td>
			<td>n.a.</td>
			<td>Copy templates of equiangular and cosine-weighted circles are provided in Nyengaard &#38; Gundersen. Eur Respir Rev. 15, 107-114, doi: 10.1183/09059180.00010101 (2006) and in Gundersen et al. Stereological Principles and Sampling Procedures for Toxicologic Pathologists. In: Haschek and Rousseaux&#180;s Handbook of Toxicologic Pathology. 3rd ed, 215-286, ISBN: 9780124157590 (2013).</td>
		</tr>
		<tr>
			<td>Foldback clamps (YIHAI binder clips, 15 mm and 19 mm)</td>
			<td>Ningbo Tianhong Stationery Co ltd., China</td>
			<td>Y10006 and Y10005</td>
			<td>Any other type of standard office foldback clamps will do as well.</td>
		</tr>
		<tr>
			<td>Forceps (anatomical)</td>
			<td>NeoLab Migge GmbH, Heidelberg, Germany</td>
			<td>neoLab Standard -Pinzette 130 mm, anatomisch, rund, Cat.: 1-1811</td>
			<td>Any type of anatomical forceps will do.</td>
		</tr>
		<tr>
			<td>Formaldehyde-solution 4%</td>
			<td>SAV-Liquid Produktion GmbH, Flintsbach, Germany</td>
			<td>Formaldehyd 37/40 %, Cat.: 1000411525005</td>
			<td>Dilute to 4% from concentrated solution. Buffer to neutral pH. Wear appropriate eye-, hand- and respiratory protection. Process tissue samples fixed in formaldehyde solution under an exhaust hood and wear protective goggles and laboratory gloves.</td>
		</tr>
		<tr>
			<td>Graph paper (for calibration)</td>
			<td>B&#252;romarkt B&#246;ttcher AG, Jena, Germany. www.bueromarkt-ag.de</td>
			<td>Penig Millimeterpapier A4, Cat.: 2514</td>
			<td>Any type of graph paper (scaled in millimeter) will do.</td>
		</tr>
		<tr>
			<td>Laboratory beakers (5ml, 10 ml, 50 ml, 100 ml)</td>
			<td>NeoLab Migge GmbH, Heidelberg, Germany</td>
			<td>Becherglas SIMAX&#174; , niedrige Form, Borosilikatglas 3.3 Cat.: E-1031, E-1032, E-1035, E-1036</td>
			<td>Any kind of glass- or plastic beakers of 5 &#8211; 100 ml volume will do.</td>
		</tr>
		<tr>
			<td>Laboratory scale(s)</td>
			<td>Mettler Toledo GmbH, Gie&#223;en, Germany</td>
			<td>PM6000</td>
			<td rowspan="2">Any standard laboratory scales with measuring ranges between 0.1 mg to approximately 20 g, respectively between 100 mg to approximately 500 g will do</td>
		</tr>
		<tr>
			<td></td>
			<td>Sartorius AG, G&#246;ttingen, Germany</td>
			<td>BP61S</td>
		</tr>
		<tr>
			<td>Microtome blades</td>
			<td>Engelbrecht Medizin &#38; Labortechnik, Ederm&#252;nde, Germany</td>
			<td>FEATHER Microtome blasdes S35, Cat.:14700</td>
			<td>Any kind of single-use microtome blades will do.</td>
		</tr>
		<tr>
			<td rowspan="2">Morphometry/planimetry software/system</td>
			<td>National Institute of Health (NIH)</td>
			<td>ImageJ</td>
			<td>Download from https://www. imagej.nih.gov/ij/ (1997).</td>
		</tr>
		<tr>
			<td>Zeiss-Kontron, Eching, Germany</td>
			<td>VideoplanTM image analysis system</td>
			<td>Out of stock</td>
		</tr>
		<tr>
			<td>Photo camera</td>
			<td>Nikon</td>
			<td>D40</td>
			<td>Any kind of digital photocamera that can be mounted to a tripod&#160; will do.</td>
		</tr>
		<tr>
			<td>Plastic transparencies</td>
			<td>Avery Zweckform GmbH, Oberlaindern, Germany</td>
			<td>Laser Overhead-Folie DINA4 Cat.:&#160; 3562</td>
			<td>Any (laser)-printable plastic transparency will do.</td>
		</tr>
		<tr>
			<td>Random number tables</td>
			<td>n.a.</td>
			<td>n.a.</td>
			<td>Random number tables can conveniently be generated (with defined numbers of random numbers and within defined intervals), using random number generators, such as: https://www.random.org/</td>
		</tr>
		<tr>
			<td>Razor blades</td>
			<td>Plano GmbH, Wetzlar, Germany</td>
			<td>T5016</td>
			<td>Any kind of razor blades will do.</td>
		</tr>
		<tr>
			<td>Ruler</td>
			<td>B&#252;romarkt B&#246;ttcher AG, Jena, Germany. www.bueromarkt-ag.de</td>
			<td>Office-Point Lineal 30 cm, Kunststoff, transparent, Cat.: ln30</td>
			<td>Any kind of cm-mm-scaled ruler will do as well.</td>
		</tr>
		<tr>
			<td>Saline (0.9%)</td>
			<td>Carl Roth GmbH, Germany</td>
			<td>Natriumchlorid, &#62;99% Cat.: 0601.1</td>
			<td>To prepare 0.9% saline, dissolve 9 g NaCl in 1000 ml of distilled water at 20&#176;C.</td>
		</tr>
		<tr>
			<td>Scalpel blades</td>
			<td>Aesculap AG &#38; Co KG, Tuttlingen, Germany</td>
			<td>BRAUN Surgical blades N&#176;22</td>
			<td>Any kind of scalpel blades will do.</td>
		</tr>
		<tr>
			<td>Scanner</td>
			<td>Hewlett-Packard</td>
			<td>hp scanjet 7400c</td>
			<td>Any type of standard office scanner capable of scanning with resolutions from 150-600 dpi will do.</td>
		</tr>
		<tr>
			<td>Slicing devices</td>
			<td>n.a.</td>
			<td>n.a.</td>
			<td>Examples forself constructed slicing devices can be found in Knust, et al. Anatomical record. 292, 113-122, doi: 10.1002/ar.20747 (2009) and in the supplemental data file of Albl et al.&#160; Toxicol Pathol. 44, 414-420, doi: 10.1177/0192623316631023 (2016).</td>
		</tr>
		<tr>
			<td>Spherical casting molds (e.g., in 25.5 mm diameter)</td>
			<td>Pralinen-Zutaten.de, Windach, Germany</td>
			<td>Pralinen-Hohlkugeln Vollmilch, 25.5 mm</td>
			<td>Spherical casting molds can as well be be self-constructed, or obtained from other confectioner suppliers (for for pralines). The casting molds indicated here are actually the package/wrapping of hollow pralines bodies (first eat the pralines and then use the package for generation of i-sector sections)</td>
		</tr>
		<tr>
			<td>Thin wire</td>
			<td>Basteln &#38; Hobby Schobes, Stra&#223;furth, Germany. www,bastel-welt.de</td>
			<td>Messingdraht (0.3 mm) Cat.: 216464742</td>
			<td>Any other kind of thin wire will also do.</td>
		</tr>
		<tr>
			<td>Tissue paper</td>
			<td>NeoLab Migge GmbH, Heidelberg, Germany</td>
			<td>Declcate Task Wipes-White, Cat.: 1-5305</td>
			<td>Any other kind of laboratory tissue paper will do as well.</td>
		</tr>
		<tr>
			<td>Waterproof pen</td>
			<td>Staedler Mars GmbH &#38; Co KG, N&#252;rnberg, Grmany</td>
			<td>Lumocolor permanent 313, 0.4 mm, S, black, Cat.: 313-2</td>
			<td>Any other kind of waterproof pen will do as well.</td>
		</tr>
	</tbody>
</table>

sampling strategies and processing of biobank tissue samples from porcine biomedical models

В трансляционного медицинских исследований свинину модели постепенно становятся более популярными. Учитывая высокую ценность отдельных животных, особенно генетически модифицированных свиней, модели и часто ограниченное количество доступных животных этих моделей, создание коллекций (биобанке) образцов должным образом обработанной ткани подходит для широкий спектр последующий анализ методов, включая анализ, не указанный на этапе отбора проб, представляют собой значимые подходы в полной мере воспользоваться трансляционная значения модели. Отношении особенности свинину анатомии недавно были установлены всеобъемлющие руководящие принципы для стандартизированных поколения представителя, высокое качество образцов из разных свинину органов и тканей. Эти руководящие принципы являются необходимыми условиями для воспроизводимости результатов и их сопоставимости между различными исследованиями и следователей. Запись основных данных, таких как орган весов и томов, определение мест отбора проб и количество образцов ткани будет создан, а также их ориентацию, размер, обработки и направления обрезки, являются соответствующие факторы определение обобщения и удобство образца для молекулярной, качественные и количественные морфологического анализа. Здесь наглядные, практические, шаг за шагом демонстрация самых важных методов для поколения представителя, представлен многоцелевой биобанке образца от свиного тканей. Описанные здесь методы включают в себя определение органа/ткани томов и плотности, применение процедуры средневзвешенная по объему систематического выборочного Паренхиматозный органов путем подсчета точки, определение степени усадки ткани связанные с гистологическим внедрение образцов, и поколения произвольно ориентированный образцов для количественных стереологических анализов, например изотропной единообразных случайных (IUR) секции, создаваемые методы «Ориентатор» и «Isector» и вертикальная форма случайные (VUR) секций.

Метод погружения для определения плотности ткани/орган
Рисунок 12А -B показывает, представитель определение плотности и объема свиные почки методом погружения, описанный в шаге 1.1 (рис. 1, <strong class="xf...

Watch this Scientific Journal Video about Sampling Strategies and Processing of Biobank Tissue Samples from Porcine Biomedical Models at JoVE.com

Sampling Strategies and Processing of Biobank Tissue Samples from Porcine Biomedical Models

Стратегий выборки и обработки образцов ткани биобанка из свинины биомедицинской модели

Демонстрируются практического применения и производительности методов для генерации образцы представительной ткани свинину животных моделей для широкого спектра течению анализов в биобанке проектов, включая volumetry, систематического случайной выборки, и дифференциальный обработка образцов ткани для качественных и количественных анализов молекулярных и морфологических типов.

In translational medical research, porcine models have steadily become more popular. Considering the high value of individual animals, particularly of ...

This video demonstrates two key techniques for sampling and processing biobank porcine tissue specimens. The submersion technique reliably estimates total organ and tissue volume and the orientator technique generates random isotropic tissue sections for unbiased estimation of quantitative morphological parameters. The main advantage of the submersion technique for tissue density determination is that it can be applied to any kind of tissue and that it produces reliable results for small as well as for large samples.The advantages of the orientator technique are that it is highly efficient and also works with large tissue samples. To begin volumetry for a large organ excise an appropriately sized piece of tissue from the organ. Carefully swab the sample with a paper towel to remove excess blood and tissue fluid.Then weigh the sample on a precision scale and record the weight of the sample. Add 0.9%saline to a beaker of suitable size. Do not completely fill the beaker to prevent overflow during tissue emersion.Place the beaker on the scale then submerge a forceps or a self-constructed sample holder in the saline until the mark on the forceps or sample holder reaches the liquid. Next, reset the display of the scale to zero. Carefully attach the tissue sample to the forceps or sample holder and completely submerge the sample in the saline until the marked position is reached.To record reliable density measurements it is important to ensure that the sample is completely submerged and to avoid any contact of the submerged sample to the inner walls or the bottom of the beaker. While holding the sample in position, record the weight displayed on the scale. Use this measurement and the density of saline at room temperature to calculate the volume of the sample.Then calculate the density of the tissue sample from the weight of the sample and its volume. For large organs and tissues, such as this kidney, perform repeated measurements with multiple samples and calculate the average density from the single measurements. For small samples and small organs measured in total such as the pituitary gland, repeat the measurement three times before calculating the average organ density from the single measurement values.Finally, calculate the total volume of the organ, tissue or organ compartment from its weight and density. Place a fixed tissue specimen on a print of an equiangular circle with one edge parallel to the zero to 180 degree direction. Then use a random number table to determine a random angle.Find the corresponding marks on the scale of the equiangular circle. Using these marks, cut a section through the sample with the section plane oriented parallel to the direction of the random angle indicated on the scale of the equiangular circle and a vertical to the resting surface of the sample. Place the tissue block with the section surface facing down on a cosine weighted circle.With the edge of the resting surface placed parallel to the one-to-one direction. Now cut a new section through the sample at a random angle determined using the random number table. The resulting section plane is an isotropic uniform random section.This table shows the representative densities of several porcine tissues and organs determined using the submersion technique. Most porcine tissues display density values slightly higher than one referring to the density of water. Whereas tissues swimming in saline, such as adipose tissue for example, display densities lower than one.This figure shows four representative IUR sections of porcine left ventricular myocardium prepared with the orientator technique. Note the changed cutting angles in the different IUR sections. Once mastered, the submersion technique for tissue density determination can be done in a few minutes.If it is performed properly. Isotropic uniform random tissue sections generated with the orientator technique are suitable for estimation of any quantitative morphological parameters using appropriate stereological analysis methods. digital music.

Research

JoVE Journal

Medicine

Generation of Alginate Microspheres for Biomedical Applications

Генерация альгинат микросфер для биомедицинских применений

Alginate-based materials have received considerable attention for biomedical applications because of their hydrophilic nature, biocompatibility, and ...

How to Measure Cortical Folding from MR Images: a Step-by-Step Tutorial to Compute Local Gyrification Index

Как измерить Корковая Складные от изображения MR: Шаг за шагом Учебник для вычисления локального индекса Gyrification

Cortical folding (gyrification) is determined during the first months of life, so that adverse events occurring during this period leave traces that will ...

Processing of Primary Brain Tumor Tissue for Stem Cell Assays and Flow Sorting

Обработка первичной опухолевой ткани мозга для стволовых клеток Анализы и поток Сортировка

Brain tumors are typically comprised of morphologically diverse cells that express a variety of neural lineage markers. Only a relatively small fraction ...

The Bovine Lung in Biomedical Research: Visually Guided Bronchoscopy, Intrabronchial Inoculation and In Vivo Sampling Techniques

The Bovine Lung in Biomedical Research: Visually Guided Bronchoscopy, Intrabronchial Inoculation and In Vivo Sampling Techniques

Легких крупного рогатого скота в биомедицинских исследований: Визуально Руководствуясь Бронхоскопия, внутрибронхиального Прививка и<em&gt; В Vivo</em&gt; Методы отбора проб

There is an ongoing search for alternative animal models in research of respiratory medicine. Depending on the goal of the research, large animals as ...

Absorption of Nasal and Bronchial Fluids: Precision Sampling of the Human Respiratory Mucosa and Laboratory Processing of Samples

Поглощение носовой и бронхиальной жидкостей: точность выборки человека слизистой оболочки дыхательных путей и лаборатория обработки образцов

The methods of nasal absorption (NA) and bronchial absorption (BA) use synthetic absorptive matrices (SAM) to absorb the mucosal lining fluid (MLF) of the ...

Improvement of a Closed Chest Porcine Myocardial Infarction Model by Standardization of Tissue and Blood Sampling Procedures

Улучшение модели свинину инфаркт миокарда закрытой груди путем стандартизации процедур отбора проб крови и тканей

Myocardial ischemia reperfusion (I/R) injury contributes to almost half of the necrotic area after myocardial infarction. To date there is no approved ...

Human Subcutaneous Adipose Tissue Sampling Using a Mini-Liposuction Technique

Забор подкожной жировой клетчатки человека с использованием техники мини-липосакции

Studies on adipose tissue are useful in understanding metabolic and other conditions. Human subcutaneous adipose tissue is accessible. With appropriate ...

Repetitive Blood Sampling from the Subclavian Vein of Conscious Rat

Повторяющийся забор крови из подключичной вены сознательной крысы

Rats are widely used in pharmacokinetics (PK) and toxicokinetic (TK) studies that need to collect a certain amount of blood at specific time points to ...

Dissection Techniques and Histological Sampling of the Heart in Large Animal Models for Cardiovascular Diseases

Методы рассечения и гистологический отбор проб сердца на крупных животных моделях сердечно-сосудистых заболеваний

The standard gross examination and sampling are key elements in the reproducibility and success of experimental studies of cardiovascular diseases carried ...

Экономичная экстракция диатомовой ДНК с помощью модифицированного набора

Extraction of Diatom DNA from Water Samples and Tissues

В центре внимания автора: Тестирование диатомовых водорослей для судебно-медицинской экспертизы утопления 

Выделение ДНК диатомовых водорослей из проб воды и тканей

Diatom testing is an essential auxiliary means in forensic practice to determine whether the corpse drowned in water and to infer the drowning location. ...