Name: investigations on the ga(iii) complex of eob-dtpa and its 68ga radiolabeled analogue
Uploaded: 2016-08-17T13:00:00
Description: Watch this Scientific Journal Video about Investigations on the GaIII Complex of EOB-DTPA and Its 68Ga Radiolabeled Analogue at JoVE.com

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1. EOB-DTPA和Ga的制备EOB-DTPA] 注意：使用前请先咨询的使用有机溶剂，耐酸，耐碱所有相关的材料安全数据表（MSDS）。执行所有步骤，在通风橱中，并使用个人防护用品（防护眼镜，手套，实验室外套）。 <ol><li> 从gadoxetic酸EOB-DTPA的分离 <ol><li>花费3毫升0.25M的gadoxetic酸注射溶液到烧瓶中。草酸的500毫克（5.6毫摩尔）添加到搅拌的溶液中。 </li><li>搅拌1小时后，通过使用减压玻璃?...

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	<li>Weinmann, H. J., 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=A+new+lipophilic+gadolinium+chelate+as+a+tissue-specific+contrast+medium+for+MRI.">A new lipophilic gadolinium chelate as a tissue-specific contrast medium for MRI.</a> Magn. Reson. Med. 22, 233-237 (1991).</li><li>Stroszczynski, 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=Aktueller+Stand+der+MRT-Diagnostik+mit+leberspezifischen+Kontrastmitteln.">Aktueller Stand der MRT-Diagnostik mit leberspezifischen Kontrastmitteln.</a> Radiologe. 44, 1185 (2004).</li><li>Van Beers, B. E., Pastor, C. M., Hussain, H. K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Primovist,+Eovist+-+what+to+expect.">Primovist, Eovist - what to expect.</a> J. Hepatol. 57, 421-429 (2012).</li><li>Zech, C. J., Herrmann, K. A., Reiser, M. F., Schoenberg, S. O. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=MR+Imaging+in+Patients+with+Suspected+Liver+Metastases:+Value+of+Liver-specific+Contrast+Agent+Gd-EOB-DTPA.">MR Imaging in Patients with Suspected Liver Metastases: Value of Liver-specific Contrast Agent Gd-EOB-DTPA.</a> Magn. Reson. Med. Sci. 6, 43-52 (2007).</li><li>Leonhardt, 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=Hepatic+Uptake+of+the+Magnetic+Resonance+Imaging+Contrast+Agent+Gd-EOB-DTPA:+Role+of+Human+Organic+Anion+Transporters.">Hepatic Uptake of the Magnetic Resonance Imaging Contrast Agent Gd-EOB-DTPA: Role of Human Organic Anion Transporters.</a> Drug Metab. Dispos. 38, 1024-1028 (2010).</li><li>Wadas, T. J., Wong, E. H., Weisman, G. R., Anderson, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Coordinating+Radiometals+of+Copper,+Gallium,+Indium,+Yttrium,+and+Zirconium+for+PET+and+SPECT+Imaging+of+Disease.">Coordinating Radiometals of Copper, Gallium, Indium, Yttrium, and Zirconium for PET and SPECT Imaging of Disease.</a> J. Chem. Rev. 110, 2858-2902 (2010).</li><li>Ametamey, S. M., Honer, M., Schubiger, P. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Molecular+Imaging+with+PET.">Molecular Imaging with PET.</a> Chem. Rev. 108, 1501-1516 (2008).</li><li>Cutler, C. S., Hennkens, H. M., Sisay, N., Huclier-Markai, S., Jurisson, S. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Radiometals+for+Combined+Imaging+and+Therapy.">Radiometals for Combined Imaging and Therapy.</a> Chem. Rev. 113, 858-883 (2013).</li><li>Henze, 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=PET+Imaging+of+Somatostatin+Receptors+Using+[68GA]DOTA-D-Phe1-Tyr3-Octreotide:+First+Results+in+Patients+with+Meningiomas.">PET Imaging of Somatostatin Receptors Using [68GA]DOTA-D-Phe1-Tyr3-Octreotide: First Results in Patients with Meningiomas.</a> J. Nucl. Med. 42, 1053-1056 (2001).</li><li>Hofmann, 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=Biokinetics+and+imaging+with+the+somatostatin+receptor+PET+radioligand+68Ga-DOTATOC:+preliminary+data.">Biokinetics and imaging with the somatostatin receptor PET radioligand 68Ga-DOTATOC: preliminary data.</a> Eur. J. Nucl. Med. 28, 1751-1757 (2001).</li><li>Blau, M., Nagler, W., Bender, M. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fluorine-18:+a+new+isotope+for+bone+scanning.">Fluorine-18: a new isotope for bone scanning.</a> J. Nucl. Med. 3, 332-334 (1962).</li><li>Green, M. A., Welch, M. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Gallium+Radiopharmaceutical+Chemistry.">Gallium Radiopharmaceutical Chemistry.</a> Int. J. Radiat. Appl. Instrum. B. 16, 435-448 (1989).</li><li>R&#246;sch, F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Past,+present+and+future+of+68Ge/68Ga+generators.">Past, present and future of 68Ge/68Ga generators.</a> Appl. Radiat. Isot. 76, 24-30 (2013).</li><li>Liu, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+role+of+coordination+chemistry+in+the+development+of+target-specific+radiopharmaceuticals.">The role of coordination chemistry in the development of target-specific radiopharmaceuticals.</a> Chem. Soc. Rev. 33, 445-461 (2004).</li><li>Haubner, 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=Development+of+(68)Ga-labelled+DTPA+galactosyl+human+serum+albumin+for+liver+function+imaging.">Development of (68)Ga-labelled DTPA galactosyl human serum albumin for liver function imaging.</a> Eur. J. Nucl. Med. Mol. Imaging. 40 (68), 1245-1255 (2013).</li><li>Yang, W., Zhang, X., Liu, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Asialoglycoprotein+Receptor-Targeted+Radiopharmaceuticals+for+Measurement+of+Liver+Function.">Asialoglycoprotein Receptor-Targeted Radiopharmaceuticals for Measurement of Liver Function.</a> Curr. Med. Chem. 21, 4-23 (2014).</li><li>Chauhan, K., 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=68Ga+based+probe+for+Alzheimer's+disease:+synthesis+and+preclinical+evaluation+of+homodimeric+chalcone+in+&#946;-amyloid+imaging.">68Ga based probe for Alzheimer's disease: synthesis and preclinical evaluation of homodimeric chalcone in &#946;-amyloid imaging.</a> Org. Biomol. Chem. 12, 7328-7337 (2014).</li><li>Chakravarty, R., Chakraborty, S., Dash, A., Pillai, M. R. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Detailed+evaluation+on+the+effect+of+metal+ion+impurities+on+complexation+of+generator+eluted+68Ga+with+different+bifunctional+chelators.">Detailed evaluation on the effect of metal ion impurities on complexation of generator eluted 68Ga with different bifunctional chelators.</a> Nucl. Med. Biol. 40, 197-205 (2013).</li><li>Clevette, D. J., Orvig, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Comparison+of+ligands+of+differing+denticity+and+basicity+for+the+in+vivo+chelation+of+aluminum+and+gallium.">Comparison of ligands of differing denticity and basicity for the in vivo chelation of aluminum and gallium.</a> Polyhedron. 9, 151-161 (1990).</li><li>Prinsen, K., 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=Development+and+evaluation+of+a+68Ga+labeled+pamoic+acid+derivative+for+in+vivo+visualization+of+necrosis+using+positron+emission+tomography.">Development and evaluation of a 68Ga labeled pamoic acid derivative for in vivo visualization of necrosis using positron emission tomography.</a> Bioorg. Med. Chem. 18, 5274-5281 (2010).</li><li>Vogl, T. J., 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=Liver+tumors:+comparison+of+MR+imaging+with+Gd-EOB-DTPA+and+Gd-DTPA.">Liver tumors: comparison of MR imaging with Gd-EOB-DTPA and Gd-DTPA.</a> Radiology. 200, 59-67 (1996).</li><li>Reimer, P., 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=Phase+II+clinical+evaluation+of+Gd-EOB-DTPA:+dose,+safety+aspects,+and+pulse+sequence.">Phase II clinical evaluation of Gd-EOB-DTPA: dose, safety aspects, and pulse sequence.</a> Radiology. , 177-183 (1996).</li><li>Ba-Ssalamah, 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=MRT+der+Leber.">MRT der Leber.</a> Radiologe. 44, 1170-1184 (2004).</li><li>Scott, R. P. 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> Journal of Chromatography Library. 22A, A137-A160 (1983).</li><li>Reichenbaecher, M., Popp, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Strukturanalytik organischer und anorganischer Verbindungen. , (2007).</li><li>Gross, J. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Mass Spectrometry: A Textbook. , (2004).</li><li>Ma, T. S., Rittner, R. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Modern Organic Elemental Analysis. , (1979).</li><li>Mueller, 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=Simplified+NaCl+Based+68Ga+Concentration+and+Labeling+Procedure+for+Rapid+Synthesis+of+68Ga+Radiopharmaceuticals+in+High+Radiochemical+Purity.">Simplified NaCl Based 68Ga Concentration and Labeling Procedure for Rapid Synthesis of 68Ga Radiopharmaceuticals in High Radiochemical Purity.</a> Bioconjugate Chem. 23, 1712-1717 (2012).</li><li>Roberts, T. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Radio-column+chromatography.">Radio-column chromatography.</a> Journal of Chromatography Library. 14, 103-132 (1978).</li><li>Roberts, T. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Radio-thin-layer+chromatography.">Radio-thin-layer chromatography.</a> Journal of Chromatography Library. 14, 45-83 (1978).</li><li>Green, M. A., Welch, M. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Gallium+radiopharmaceutical+chemistry.">Gallium radiopharmaceutical chemistry.</a> Nucl. Med. Biol. 16, 435-448 (1989).</li><li>Notni, J., Plutnar, J., Wester, 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=Bone-seeking+TRAP+conjugates:+surprising+observations+and+their+implications+on+the+development+of+gallium-68-labeled+bisphosphonates.">Bone-seeking TRAP conjugates: surprising observations and their implications on the development of gallium-68-labeled bisphosphonates.</a> EJNMMI Res. 2, 13 (2012).</li><li>Schmitt-Willich, H., 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=Synthesis+and+Physicochemical+Characterization+of+a+New+Gadolinium+Chelate:+The+Liver-Specific+Magnetic+Resonance+Imaging+Contrast+Agent+Gd-EOB-DTPA.">Synthesis and Physicochemical Characterization of a New Gadolinium Chelate: The Liver-Specific Magnetic Resonance Imaging Contrast Agent Gd-EOB-DTPA.</a> Inorg. Chem. 38, 1134-1144 (1999).</li><li>Zhernosekov, K., Nikula, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=68Ga+generator+for+positron+emission+tomography.">68Ga generator for positron emission tomography.</a> , (2012).</li><li>Simecek, J., Hermann, P., Wester, H. J., Notni, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=How+is+68Ga+Labeling+of+Macrocyclic+Chelators+Influenced+by+Metal+Ion+Contaminants+in+68Ge/68Ga+Generator+Eluates?.">How is 68Ga Labeling of Macrocyclic Chelators Influenced by Metal Ion Contaminants in 68Ge/68Ga Generator Eluates?.</a> ChemMedChem. 8, 95-103 (2013).</li><li>Baur, 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=Synthesis,+Radiolabelling+and+In+Vitro+Characterization+of+the+Gallium-68-,+Yttrium-90-+and+Lutetium-177-Labelled+PSMA+Ligand,+CHX-A''-DTPA-DUPA-Pep.">Synthesis, Radiolabelling and In Vitro Characterization of the Gallium-68-, Yttrium-90- and Lutetium-177-Labelled PSMA Ligand, CHX-A''-DTPA-DUPA-Pep.</a> Pharmaceuticals (Basel). 7, 517-529 (2014).</li><li>Boros, 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=RGD+conjugates+of+the+H2dedpa+scaffold:+synthesis,+labeling+and+imaging+with+68Ga.">RGD conjugates of the H2dedpa scaffold: synthesis, labeling and imaging with 68Ga.</a> Nucl. Med. Biol. 39, 785-794 (2012).</li><li>Beck, W. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Hematology. , (1998).</li><li>Patel, V., Morrissey, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Practical and Professional Clinical Skills. , (2001).</li><li>Bartke, A., Constanti, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Basic Endocrinology. , (1998).</li><li>Bernstein, L. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mechanisms+of+Therapeutic+Activity+for+Gallium.">Mechanisms of Therapeutic Activity for Gallium.</a> Pharmacol. Rev. 50, 665-682 (1998).</li><li>Clausen, J., Edeling, C. J., Fogh, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=67Ga+Binding+to+Human+Serum+Proteins+and+Tumor+Components.">67Ga Binding to Human Serum Proteins and Tumor Components.</a> Cancer Res. 34, 1931-1937 (1974).</li><li>Dumont, R. 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=Novel+64Cu-+and+68Ga-Labeled+RGD+conjugates+show+improved+PET+imaging+of+&#945;v&#946;3+integrin+expression+and+facile+radiosynthesis+[Erratum+to+document+cited+in+CA156:116856.">Novel 64Cu- and 68Ga-Labeled RGD conjugates show improved PET imaging of &#945;v&#946;3 integrin expression and facile radiosynthesis [Erratum to document cited in CA156:116856.</a> J. Nucl. Med. 52, 1498 (2011).</li><li>Pohle, K., 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=68Ga-NODAGA-RGD+is+a+suitable+substitute+for+18F-Galacto-RGD+and+can+be+produced+with+high+specific+activity+in+a+cGMP/GRP+compliant+automated+process.">68Ga-NODAGA-RGD is a suitable substitute for 18F-Galacto-RGD and can be produced with high specific activity in a cGMP/GRP compliant automated process.</a> Nucl. Med. Biol. 39, 777-784 (2012).</li><li>Notni, J., Pohle, K., Wester, 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=Be+spoilt+for+choice+with+radiolabelled+RGD+peptides:+Preclinical+evaluation+of+68+Ga-TRAP(RGD)3.">Be spoilt for choice with radiolabelled RGD peptides: Preclinical evaluation of 68 Ga-TRAP(RGD)3.</a> Nucl. Med. Biol. 40, 33-41 (2013).</li></ol>

EOB-DTPA是通过多步骤合成33访问，但可能只是以及由含有gadoxetic酸可用的造影剂中分离。为了这个目的，中央的Gd（III）离子可以与过量草酸的沉淀。除去钆（Ⅲ）草酸盐和草酸后的配位体可以通过沉淀在冷水中，在pH 1.5分离。然而，为了增强滤液产量柱色谱可以代替或作为后续程序执行的。任一方法产生的70％的总产率的分析纯的配体（ 图1-3， 表1）。 <p class...

Gadoxetic酸，对配体的钆（III）络合物的EOB-DTPA 1的通用名称，是在肝胆磁共振成像（MRI）。2,3-一个常用的造影剂由于其特异性摄取由肝细胞和高百分比肝胆排泄它使局灶性病变和肝脏肿瘤的本地化。2-5然而，MRI技术有一定的局限性（如造影剂毒性，患者的幽闭恐惧症或金属植入物的应用受到限制）调用的替代诊断工具。 正电子发射断层扫描（PET）是一种分子成像方法，其中，一种放射性物质（示踪）的少量施用，在其它在体内的分布由PET扫描器记录6 PET是一种动态的方法，其允许高图像的空间和时间分辨率以及结果的量化，而无需处理MRI造影剂的副作用。所获得的代谢信息的信息值可与来自其他成像方法接收解剖数据进一步增加组合，最通常通过在PET / CT扫描仪计算机断层扫描（CT）的混合成像实现的。 适用于PET示踪剂的化学结构必须包括用作正电子发射放射性同位素。正电子有一个短暂的寿命，因为它们几乎立即消灭与周围组织的原子炮弹电子。通过湮灭与运动的相反方向的两个511keV的伽玛光子发射，这是由PET扫描器记录。-7,8-为了形成示踪剂，PET的核素可以共价结合到分子，如在2-脱氧的情况下2- [18 F] fluoroglucose葡萄糖（FDG），是最广泛使用的PET示踪剂。7然而，核素也可以形成配位键合到一个或多个配体（ 如[68镓] -DOTATOC 9,10）或溶解无机盐）施加（ 例如，[18 F]氟化物钠11。总而言之，示踪剂的结构是至关重要的，因为它决定了它的生物分布，代谢和排泄行为。 合适的PET核素应该结合像便利正电子的能量和可用性，以及半衰期足够预期调查有利特征。 68镓核素已成为PET的字段的必要的力，在过去的二十年。12,13这主要是由于通过一个发电机系统其可用性，它独立地允许在现场标签从回旋加速器的附近。在一台发电机，母核素68戈被吸收在从该子体核素68镓洗脱，随后标记，以一个合适的螯合剂的一列。6,14由于68镓核素的存在是为繁琐耳鼻喉科阳离子就像钆（III）10,13，螯合EOB-DTPA 68嘎，而不是将产生复杂的具有相同的整体负电荷的gadoxetic酸。相应地，68镓示踪剂可能与适宜用于PET成像合并相似的特性肝特异性。虽然gadoxetic酸购买并施用二钠盐，在下面的上下文中，我们将称其为钆〔EOB-DTPA]和非放射性镓（Ⅲ）配合物作为镓[EOB-DTPA]，或68镓[ EOB-DTPA]为方便起见放射性标记组分的情况下。 要用作PET示踪剂，放射性金属配合物需要被广泛地在体外第一检查，在体内或离体实验评估其适用性。要确定相应的医学难题的适用性，各种示踪特征，如生物分布行为和清除轮廓，稳定性，器官特异性和细胞或Tissu酒店Ë摄取需要进行调查。由于它们的非侵入性的性质， 在体外测定常常之前在体内实验进行。人们普遍承认，DTPA及其衍生物是有限的适用性如由于这些配合螯合剂为68镓缺乏动力学惰性，导致同等快速分解的，当体内施用。14-20这主要是通过充当载脂蛋白转引起竞争对手68嘎血浆。然而，我们研究了关于在肝胆成像，其特征在于，可在数分钟内提供诊断信息后注入3,4,21-23，从而不一定需要长期示踪剂稳定性及其可能的应用这种新的示踪剂。为此目的，我们从gadoxetic酸分离EOB-DTPA和最初与天然镓（Ⅲ），它存在两个稳定同位素，69 Ga和71的混合物进行的络合</SUP&gt;嘎。由此获得的复杂的担任非放射性标准68的Ga以下螯合。我们采用建立的方法，同时评估其是否适合确定EOB-DTPA的68 Galabeling效率，并探讨新的68嘎示踪剂的亲脂性及其在不同介质中的稳定性。

<table border="0" cellpadding="0" cellspacing="0" width="682">
	<colgroup>
		<col />
		<col />
		<col />
		<col />
	</colgroup>
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">primovist</td>
			<td style="width:180px;">Bayer</td>
			<td style="width:119px;">-</td>
			<td style="width:167px;">0.25 M</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">gallium(III) chloride</td>
			<td style="width:180px;">Sigma-Aldrich Co.</td>
			<td style="width:119px;">450898</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">water (deionized)</td>
			<td style="width:180px;">-</td>
			<td style="width:119px;">-</td>
			<td>&#160;tap water deionizing equipment by Auma-Tec GmbH</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">hydrochloric acid 12 M</td>
			<td style="width:180px;">VWR</td>
			<td style="width:119px;">20252.29</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">sodium hydroxide</td>
			<td style="width:180px;">Polskie Odczynniki Chemiczne S.A.</td>
			<td style="width:119px;">810925429</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">oxalic acid</td>
			<td style="width:180px;">Sigma-Aldrich Co.</td>
			<td style="width:119px;">75688</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">ethyl acetate</td>
			<td style="width:180px;">Brenntag GmbH</td>
			<td style="width:119px;">10010447</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">silica gel</td>
			<td style="width:180px;">Merck KGaA</td>
			<td style="width:119px;">1.10832.9025</td>
			<td>Geduran Si 60 0,063-0,2 mm</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">TLC silica gel 60 F254</td>
			<td style="width:180px;">Merck KGaA</td>
			<td style="width:119px;">1.16834.0001</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">methanol</td>
			<td style="width:180px;">VWR</td>
			<td style="width:119px;">20903.55</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">ethanol</td>
			<td style="width:180px;">Brenntag GmbH</td>
			<td style="width:119px;">10018366</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">eiethylether</td>
			<td style="width:180px;">VWR</td>
			<td style="width:119px;">23807.468</td>
			<td>stored over KOH plates</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">ammonia solution (25 %)</td>
			<td style="width:180px;">VWR</td>
			<td style="width:119px;">1133.1</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">pH electrode</td>
			<td style="width:180px;">VWR</td>
			<td style="width:119px;">662-1657</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">stirring and heating unit</td>
			<td style="width:180px;">Heidolph</td>
			<td style="width:119px;">505-20000-00</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">pump</td>
			<td style="width:180px;">Ilmvac GmbH</td>
			<td style="width:119px;">322002</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">frit</td>
			<td style="width:180px;">-</td>
			<td style="width:119px;">custom design</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">NMR spectrometer</td>
			<td style="width:180px;">Bruker Coorporation</td>
			<td style="width:119px;">-</td>
			<td>Ultra Shield 400</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">mass spectrometer</td>
			<td style="width:180px;">Thermo Fisher Scientific Inc.</td>
			<td style="width:119px;">-</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">elemental analyser</td>
			<td>Hekatech GmbH Analysentechnik</td>
			<td style="width:119px;">-</td>
			<td>EuroVector EA 3000 CHNS</td>
		</tr>
		<tr height="25">
			<td height="25" style="height:25px;width:216px;">deuterated water D2O</td>
			<td style="width:180px;">euriso-top</td>
			<td style="width:119px;">D214</td>
			<td>99,90 % D</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Name</td>
			<td style="width:180px;">Company</td>
			<td style="width:119px;">Catalog Number</td>
			<td>Comments</td>
		</tr>
		<tr height="21">
			<td colspan="4" height="21" style="height:21px;width:681px;">Material/Equipment required for labeling procedures</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">68Ge/68Ga generator</td>
			<td style="width:180px;">ITG Isotope Technologies Garching GmbH</td>
			<td style="width:119px;">A150</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">pump and dispenser system</td>
			<td style="width:180px;">Scintomics GmbH</td>
			<td style="width:119px;">-</td>
			<td>Variosystem</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">hydrochloric acid 30 % (suprapur)</td>
			<td style="width:180px;">Merck KGaA</td>
			<td style="width:119px;">1.00318.1000</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">water (ultrapur)</td>
			<td style="width:180px;">Merck KGaA</td>
			<td style="width:119px;">1.01262.1000</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">sodium chloride (suprapur)</td>
			<td style="width:180px;">Merck KGaA</td>
			<td style="width:119px;">1.06406.0500</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">sodium acetate (suprapur)</td>
			<td style="width:180px;">Merck KGaA</td>
			<td style="width:119px;">1.06264.0050</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">glacial acetic acid (suprapur)</td>
			<td style="width:180px;">Merck KGaA</td>
			<td style="width:119px;">1.00066.0250</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">sodium citrate dihydrate</td>
			<td style="width:180px;">VEB Laborchemie Apolda</td>
			<td style="width:119px;">10782</td>
			<td>&#62;98.5%</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">PS-H+ Cartridge (S)</td>
			<td style="width:180px;">Macherey-Nagel</td>
			<td style="width:119px;">731867</td>
			<td>Chromafix</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">apo-Transferrin</td>
			<td style="width:180px;">Sigma-Aldrich Co.</td>
			<td style="width:119px;">T2036</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">PBS&#160; buffer (tablets)</td>
			<td style="width:180px;">Sigma-Aldrich Co.</td>
			<td style="width:119px;">79382</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">human serum</td>
			<td style="width:180px;">Sigma-Aldrich Co.</td>
			<td style="width:119px;">H4522</td>
			<td>from human male AB plasma</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">flasks, columns etc.</td>
			<td style="width:180px;"></td>
			<td style="width:119px;">custom design</td>
			<td></td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:216px;">pH electrode</td>
			<td style="width:180px;">Knick Elektronische Messger&#228;te GmbH &#38; Co. KG</td>
			<td style="width:119px;">765-Set</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">binary pump (HPLC)</td>
			<td style="width:180px;">Hewlett-Packard</td>
			<td style="width:119px;">G1312A (HP 1100)</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">UV Vis detector (HPLC)</td>
			<td style="width:180px;">Hewlett-Packard</td>
			<td style="width:119px;">G1315A (HP 1100)</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">radioactive detector (HPLC)</td>
			<td style="width:180px;">EGRC Berthold</td>
			<td style="width:119px;"></td>
			<td></td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:216px;">HPLC C-18-PFP column</td>
			<td style="width:180px;">Advanced Chromatography Technologies Ltd.</td>
			<td style="width:119px;">ACE-1110-1503/A100528</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">HPLC glass vials</td>
			<td style="width:180px;">GTG Glastechnik Graefenroda GmbH</td>
			<td style="width:119px;">8004-HP-H/i3&#181;</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">pipette</td>
			<td style="width:180px;">Eppendorf</td>
			<td style="width:119px;">-</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">plastic vials</td>
			<td style="width:180px;">Sarstedt AG &#38; Co.</td>
			<td style="width:119px;">6542.007</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">plastic vials</td>
			<td style="width:180px;">Greiner Bio-One International GmbH</td>
			<td style="width:119px;">717201</td>
			<td></td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:216px;">activimeter</td>
			<td style="width:180px;">MED Nuklear-Medizintechnik Dresden GmbH</td>
			<td style="width:119px;">-</td>
			<td>Isomed 2010</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">tweezers</td>
			<td style="width:180px;"></td>
			<td style="width:119px;">custom design</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">incubator</td>
			<td style="width:180px;">Heraeus Instruments GmbH</td>
			<td style="width:119px;">51008815</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">vortex mixer</td>
			<td style="width:180px;">Fisons</td>
			<td style="width:119px;">-</td>
			<td>Whirlimixer</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">centrifuge</td>
			<td style="width:180px;">Heraeus Instruments GmbH</td>
			<td style="width:119px;">75003360</td>
			<td></td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:216px;">gamma well counter</td>
			<td style="width:180px;">MED Nuklear-Medizintechnik Dresden GmbH</td>
			<td style="width:119px;">-</td>
			<td>Isomed 2100</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">water for chromatography</td>
			<td style="width:180px;">Merck KGaA</td>
			<td style="width:119px;">1.15333.2500</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">acetonitrile for chromatography</td>
			<td style="width:180px;">Merck KGaA</td>
			<td style="width:119px;">1.00030.2500</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">trifluoroacetic acid</td>
			<td style="width:180px;">Sigma-Aldrich</td>
			<td style="width:119px;">91707</td>
			<td></td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:216px;">TLC radioactivity scanner</td>
			<td style="width:180px;">raytest Isotopenmessger&#228;te GmbH</td>
			<td style="width:119px;">B00003875</td>
			<td>equipped with beta plastic detector</td>
		</tr>
	</tbody>
</table>

investigations on the ga(iii) complex of eob-dtpa and its 68ga radiolabeled analogue

我们证明为EOB-DTPA（3,6,9-三氮杂-3,6,9-三（羧甲基）-4-（乙氧基苄基）-undecanedioic酸）从其钆（III）络合物和协议的分离方法制备其的新的非放射性的， 即天然镓（Ⅲ），以及放射性68镓络合物。通过核磁共振（NMR）谱，质谱和元素分析复杂的配位体以及作为Ga（III）进行了表征。68嘎通过标准洗脱法从68锗/ 68 Ga产生获得。实验，以评估在pH值进行3.8-4.0 EOB-DTPA的68嘎标记效率。建立的分析技术无线电TLC（薄层色谱法）和无线电HPLC（高效液相色谱法）来测定示踪剂的放射化学纯度。由于68嘎示踪剂&#39;亲脂性正辛醇/水分布的第一个调查的存在于pH为7.4的溶液68镓物种n个系数是由萃取法在体外在生理pH下在各种媒体示踪剂的稳定性的测量进行测定。，揭示分解的不同的费率。

该配体EOB-DTPA和非放射性镓（III）络合物通过 1 H和13 C {1 1 H} NMR谱，质谱和元素分析进行分析。 表1中列出并描绘在图1-6的结果证实了物质的纯度。 68锗/ 68镓发生器洗脱，得到400-600活度68嘎的解决方案。在所需的示踪剂68镓[EOB-DTPA]形成所?...

Watch this Scientific Journal Video about Investigations on the GaIII Complex of EOB-DTPA and Its 68Ga Radiolabeled Analogue at JoVE.com

Investigations on the GaIII Complex of EOB-DTPA and Its 68Ga Radiolabeled Analogue

一种用于EOB-DTPA的分离和随后的络合天然镓（III）和68镓是本文中所呈现，以及所有化合物和调查上标记效率的透彻分析，体外稳定性和辛醇 /水过程放射性标记的复杂分配系数。

在EOB-DTPA和镓（三）复杂的调查其<sup&gt; 68</sup&gt;嘎放射性标记模拟

We demonstrate a method for the isolation of EOB-DTPA (3,6,9-triaza-3,6,9-tris(carboxymethyl)-4-(ethoxybenzyl)-undecanedioic acid) from its Gd(III) ...

Research

JoVE Journal

Chemistry

Investigations on the Ga(III) Complex of EOB-DTPA and Its 68Ga Radiolabeled Analogue

LabVIEW-operated Novel Nanoliter Osmometer for Ice Binding Protein Investigations

LabVIEW操作的新型纳升渗透压仪冰结合蛋白的调查

Ice-binding proteins (IBPs), including antifreeze proteins, ice structuring proteins, thermal hysteresis proteins, and ice recrystallization inhibition ...

科研

化学

Reductive Electropolymerization of a Vinyl-containing Poly-pyridyl Complex on Glassy Carbon and Fluorine-doped Tin Oxide Electrodes

在玻碳和氟掺杂的氧化锡电极的含乙烯基聚吡啶基复合还原电聚合

Controllable electrode surface modification is important in a number of fields, especially those with solar fuels applications. Electropolymerization is ...

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

铱氧化物纳米颗粒对硒化镉硫化镉@纳米棒光化学氧化增长

We demonstrate a procedure for the photochemical oxidative growth of iridium oxide catalysts on the surface of seeded cadmium selenide-cadmium sulfide ...

Synthesis and Characterization of Supramolecular Colloids

超分子胶体的合成与表征

Control over colloidal assembly is of utmost importance for the development of functional colloidal materials with tailored structural and mechanical ...

On-line Analysis of Nitrogen Containing Compounds in Complex Hydrocarbon Matrixes

在线含硫化合物在复杂油气矩阵氮分析

The shift to heavy crude oils and the use of alternative fossil resources such as shale oil are a challenge for the petrochemical industry. The ...

Preparation of Chitosan-based Injectable Hydrogels and Its Application in 3D Cell Culture

糖注射水凝胶的制备及其在3D 细胞培养中的应用

The protocol presents a facile, efficient, and versatile method to prepare chitosan-based hydrogels using dynamic imine chemistry. The hydrogel is ...

Bio-inspired Polydopamine Surface Modification of Nanodiamonds and Its Reduction of Silver Nanoparticles

纳米金刚石的生物激发多巴胺表面改性及其对银纳米粒子的还原

Surface functionalization of nanodiamonds (NDs) is still challenging due to the diversity of functional groups on the ND surfaces. Here, we demonstrate a ...

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles

复合金属氧化物纳米粒子的熔融盐合成

The development of feasible synthesis methods is critical for the successful exploration of novel properties and potential applications of nanomaterials. ...

Extraction of Lignin with High &#946;-O-4 Content by Mild Ethanol Extraction and Its Effect on the Depolymerization Yield

Extraction of Lignin with High ÃƒÆ’Ã…Â½Ãƒâ€šÃ‚Â²-O-4 Content by Mild Ethanol Extraction and Its Effect on the Depolymerization Yield

轻度乙醇萃取高β-o-4 的木质素及其对解聚产率的影响

Lignin valorization strategies are a key factor for achieving more economically competitive biorefineries based on lignocellulosic biomass. Most of the ...