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Mol Psych:研究揭示S<font color='red'>TAT</font>3有助于调节情绪
大量科学研究表明,炎症过程在精神疾病的发展中起着关键作用。特别感兴趣的领域之一IL-6 / STAT3信号转导途径,其与抑郁症,精神分裂症和双相情感障碍有关。在《Molecular Psychiatry》杂志上发表的一项研究中,由神经生理学和神经药理学部的Daniela Pollak领导的MedUni Vienna研究人员表明,STAT3作为一种控制情绪反应的分子,在传递5-羟色胺相关信号系统中起着重要作用。[查看]
http://cxbio.com/Article/molpsychyjjsstat3yzy_1.html
Nature:揭示摄入更多乳酸的黑色素瘤细胞是转移高手
在一项新的研究中,来自美国德克萨斯大学西南医学中心的研究人员发现某些黑色素瘤细胞更可能在体内扩散的原因。这一发现开辟了一种潜在的新治疗途径,并且可能用于帮助减少从3期黑色素瘤进展为更加致命的4期黑色素瘤的患者比例。相关研究结果近期发表在Nature期刊上,论文标题为“Metabolic heterogeneity confers differences in melanoma metastatic potential”。论文通讯作者为德克萨斯大学西南医学中心儿童医学中心研究所主任Sean Morrison博士和德克萨斯大学西南医学中心儿童医学中心研究所教授Ralph DeBerardinis博士。[查看]
http://cxbio.com/Article/naturejssrgdrsdhsslx_1.html
Nat Med:利用多能性干细胞移植在动物中生长出功能齐全的肺部
在一项新的研究中,来自美国哥伦比亚大学的研究人员能够使用移植的干细胞在小鼠胚胎中生长出功能齐全的肺部。这一发现表明人们最终有可能使用这种技术在动物中为需要肺部移植的患者生长出人肺部,以及研究新的肺部治疗方法。相关研究结果于2019年11月7日在线发表在Nature Medicine期刊上,论文标题为“Generation of functional lungs via conditional blastocyst complementation using pluripotent stem cells”。[查看]
http://cxbio.com/Article/natmedlydnxgxbyzzdwz_1.html
Acta Neuropathol:揭示帕金森病在脑细胞之间扩散新机制
在一项新的研究中,来自瑞典林雪平大学、卡罗林斯卡研究所、乌普萨拉大学和德国埃尔兰根大学医院的研究人员发现,神经细胞之间的较小通道参与了一种新发现的关于帕金森病如何在大脑中扩散的机制。这些结果表明有害的蛋白聚集物或者说沉积物能够结合通道形成蛋白并“搭便车”,并以这种方式扩散至健康细胞。相关研究结果近期发表在Acta Neuropathologica期刊上,论文标题为“Binding of α-synuclein oligomers to Cx32 facilitates protein uptake and transfer in neurons and oligodendrocytes”。[查看]
http://cxbio.com/Article/actaneuropatholjspjs_1.html
Nature:揭示卵细胞选择最健康的线粒体传递给后代的机制
发育中的卵细胞会进行测试,选出最健康的线粒体(细胞中的能量制造工厂),然后传递给下一代。一项针对果蝇的新研究显示了这种测试是如何进行的。相关研究结果于2019年5月15日在线发表在Nature期刊上,论文标题为“Mitochondrial fragmentation drives selective removal of deleterious mtDNA in the germline”。[查看]
http://cxbio.com/Article/naturejslxbxzzjkdxlt_1.html
国际联合委员会在东京举办评审和质量改进见习培训会
国际联合委员会(Joint Commission International,简称JCI)宣布将于2018年12月3-7日举办东京国际评审和质量改进见习培训会(Tokyo International Practicum on Accreditation and Quality Improvement)。为帮助希望取得JCI认证的医疗保健组织做好准备工作,这项全面的教育计划会详细解释JCI的方法和标准,并重点介绍要通过认证和成功做到以患者为中心需要遵循的最佳实践和流程。[查看]
http://cxbio.com/Article/gjlhwyhzdjjbpshzlgjj_1.html
Science:揭示天然的多反应性IgA识别微生物群机制
IgA被认为包被着驻留在肠道中的共生微生物群(commensal microbiota),并且抵抗肠道病原菌。IgA反应是在正常的稳态条件下发生的,而且在诸如派尔集合淋巴结(Peyer’s patches)之类的粘膜相关淋巴组织中参与T细胞依赖性的和T细胞不依赖性的分化通路。然而,尽管稳态IgA(homeostatic IgA)是大量存在的,但是它的反应特异性长期以来却是未知的。[查看]
http://cxbio.com/Article/sciencejstrddfyxigas_1.html
Science:高通量分析上千种微型蛋白,有望引发蛋白工程变革
在一项新的研究中,来自美国华盛顿大学和加拿大多伦多大学的研究人员报道了一种新的高通量方法使得对计算设计蛋白(computationally designed protein,即利用计算方法设计蛋白)的折叠稳定性进行最大规模的测试成为可能。[查看]
http://cxbio.com/Article/sciencegtlfxsqzwxdby_1.html
FDA批准首个非小细胞肺癌(NSCLC)血液样本基因检测试剂盒
瑞士制药巨头罗氏(Roche)近日宣布,美国食品和药物管理局(FDA)已批准cobas EGFR Mutation Test v2(cobas EGFR突变检测试剂盒v2),这是一款以血液为基础的、用于抗癌药特罗凯(Tarceva,通用名:erlotinib,厄洛替尼)的伴随诊断试剂盒。值得一提的是,这是FDA批准的首个以血液为基础、用于检测非小细胞肺癌(NSCLC)患者表皮生长因子受体(EGFR)基因突变的基因检测试剂盒。据估计,这类突变存在于10-20%的NSCLC病例。[查看]
http://cxbio.com/Article/fdapzsgfxxbfansclcxy_1.html
理想的肾功能评估新指标——【胱抑素C】 | 「西宝生物」
胱抑素C(CysC, cystatin C)是一种低分子量、碱性非糖化的分泌型蛋白质,与肾小球滤过率(GFR)有良好的相关性 ,可将其作为GFR 的替代指标用于各种亚临床及临床肾病的诊断。西宝生物作为诊断原料行业的供应商,提供胱抑素C检测试剂盒所需的抗原及抗体。[查看]
http://cxbio.com/Article/lxdsgnpgxzbgyscxbsw_1.html
科学家发现癌基因S<font color='red'>TAT</font>3竟也可抑癌?!
奥地利维也纳医科大学的研究人员发现,通常在癌症中发挥癌基因作用的IL-6和STAT3信号途径在前列腺癌中发挥着不同的作用。激活的STAT3能够激活ARF基因,阻断细胞分裂进而抑制细胞生长。[查看]
http://cxbio.com/Article/kxjfxajystat3jykya_1.html
乳酸快速检测试剂盒, D-/L-Lactic Acid (D-/L-Lactate) (Rapid) Assay Kit, 货号:K-DLATE
Megazyme提供乳酸检测试剂盒, 货号:K-DLATE[查看]
http://cxbio.com/Article/K-DLATE_1.html
蛋白类产品、链酶亲和素和生物素衍生物
蛋白A、蛋白G和蛋白L是微生物来源的天然或重组蛋白质,可以和哺乳动物的免疫球蛋白结合。将这些蛋白偶联于支持物上,利用亲和层析来纯化抗体,也可用于免疫沉淀(Immunoprecipitation, IP)或免疫共沉淀(Co-IP)。不同的抗体结合蛋白与不同的免疫球蛋白的结合能力并不一样,它们受到后者的来源及亚类的影响,因此对于不同的抗体需要选择不同的抗体结合蛋白。[查看]
http://cxbio.com/Article/376_1.html
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QuantitativeStandards 定量标准品 (Ludger BioQuant standards)
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Butyl Acetate
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Acetate in water 1000ppm
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Zinc Acetate 10% w/v
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Acid Phosphatase,from potato, lyophilizate
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L-Lactate Dehydrogenase (L-LDH),from pig muscle, for use of AST/GOT-Determination according to IFCC recommendations, lyophilizate
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L-Lactate Dehydrogenase (L-LDH), chemically modified,from pig muscle, for use of AST/GOT-Determination according to IFCC recommendations, solution
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L-Lactate Dehydrogenase (L-LDH),from pig muscle, suspension
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L-Lactate Dehydrogenase (L-LDH),chemically modified,from pig heart, lyophilizate
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