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Nature子刊:超5万人研究发现人体内神奇的棕色脂肪可预防多种慢性疾病!
近日,来自美国洛克菲勒大学的研究人员在《Nature Medicine》上发表了题为Brown adipose tissue is associated with cardiometabolic health的研究成果,在这项超过52,000名参与者的大规模研究中,明确了BAT在促进心脑血管代谢健康中具有潜在作用,含有BAT个体的心血管疾病及2型糖尿病等的患病风险明显较低。[查看]
http://cxbio.com/Article/naturezkc5wryjfxrtns_1.html
Science子刊:利用智能手机超灵敏定量检测唾液中的新冠病毒
根据一项新的研究,一种基于唾液的便携式智能手机平台为COVID-19测试提供了一种超灵敏但易于使用的方法,它可以在15分钟内给出测试结果,而无需进行当前金标准所需的资源密集型实验室测试。该方法在12名COVID-19感染者和6名健康对照者中进行了测试。相关研究结果于2020年12月11日在线发表在Science Advances期刊上,论文标题为“A smartphone-read ultrasensitive and quantitative saliva test for COVID-19”。论文通讯作者为美国杜兰大学医学院的Tony Y. Hu博士。[查看]
http://cxbio.com/Article/sciencezklyznsjclmdl_1.html
Science子刊:环氧水解酶抑制剂可降低神经炎症,有望治疗阿尔茨海默病
神经炎症与阿尔茨海默病(Alzheimer’s disease, AD)密切相关。越来越多的人已认识到神经炎症在AD起着关键作用。环氧脂肪酸(epoxy fatty acid, EpFA)是花生四烯酸代谢途径的衍生物,具有抗炎活性。然而,由于EpFA被可溶性环氧水解酶(soluble epoxide hydrolase, sEH)快速水解,它们的功效受到限制。在一项新的研究中,来自美国贝勒医学院的研究人员报道sEH主要在星形胶质细胞中表达,并在AD患者的死后大脑组织和5xFAD β淀粉样蛋白AD小鼠模型中升高。这种AD小鼠模型大脑中表达的sEH数量与大脑EpFA浓度下降有关。[查看]
http://cxbio.com/Article/sciencezkhysjmyzjkjd_1.html
Nature子刊解读!科学家们开发出能高效检测人类脂肪肝和肝纤维化新型探测器!
大约25%的美国人都会患上脂肪肝,这种疾病会导致肝脏纤维化, 最终会导致肝功能衰竭;目前并没有简便的方法来诊断脂肪肝或肝纤维化,近日,一篇发表在国际杂志Nature Biomedical Engineering上题为“A portable single-sided magnetic-resonance sensor for the grading of liver steatosis and fibrosis”的研究报告中,来自麻省理工学院等机构的科学家们通过研究基于核磁共振技术(NMR)开发出了一种新型诊断工具,其或能用来诊断上述两种肝脏疾病。[查看]
http://cxbio.com/Article/naturezkjdkxjmkfcngx_1.html
Science解读!揭秘轮状病毒诱发严重胃肠道疾病的分子机制!
这篇研究报告中,研究人员发现,轮状病毒感染的细胞能释放名为二磷酸腺苷(ADP,adenosine diphosphate)的信号分子,该信号分子能与邻近细胞上的细胞受体P2Y1相结合,ADP对P2Y1的激活就会导致未感染的细胞中产生名为细胞间钙质波的信号分子,通过干扰ADP与其受体的结合就能够降低小鼠疾病模型的腹泻严重性,这就表明,靶向作用P2Y1或能作为一种有效的策略来控制人群中的病毒性腹泻。[查看]
http://cxbio.com/Article/sciencejdjmlzbdyfyzw_1.html
Science子刊解读!空气污染真会让COVID-19的流行变得更加致命吗?
近日,一篇刊登在国际杂志Science Advances上题为“Air pollution and COVID-19 mortality in the United States: Strengths and limitations of an ecological regression analysis”的研究报告中,来自哈佛大学陈曾熙公共卫生学院等机构的科学家们通过研究发现,长期暴露于空气污染物中的人群或许更易死于COVID-19。在对美国超过3000个县的分析中,研究人员发现,长期暴露于细小颗粒物(PM2.5)的暴露量只要发生小幅增加,人群死于COVID-19的风险就会增加10%以上。[查看]
http://cxbio.com/Article/sciencezkjdkqwrzhrco_1.html
Nature:外泌体能够抵御细菌毒素,对抗超级细菌感染
近日,来自纽约大学朗格尼健康中心的Victor J. Torres和Ken Cadwell教授合作在Nature发表了题为“Decoy exosomes provide protection against bacterial toxins”的研究论文,该研究揭示了ATG蛋白能够促进外泌体的释放,进而在体外结合多种病原毒素,协助宿主抵御病原菌的感染。[查看]
http://cxbio.com/Article/naturewmtngdyxjdsdkc_1.html
Radiology: Artificial Intelligence:人工智能帮助提高乳腺癌诊断率
根据《Radiology: Artificial Intelligence》杂志上发表的一项研究,人工智能(AI)可以提高放射科医生在分析乳腺癌筛查乳房X光照片时的效率。[查看]
http://cxbio.com/Article/radiologyartificiali_1.html
PNAS:PNAS解读!科学家们有望利用一种新型的聚糖标记策略来揭秘肝脏中的免疫激活机制!
近日,一篇发表在国际杂志Proceedings of the National Academy of Sciences上题为“Mapping glycan-mediated galectin-3 interactions by live cell proximity labeling”的研究报告中,来自斯克里普斯研究所等机构的科学家们通过研究提出了一种新型策略来捕获聚糖分子和人类肝脏细胞中特殊蛋白激活子之间的相互作用,这样一来,研究人员就能应用新技术来理解肝脏疾病的发生机制和机体的免疫激活机制。[查看]
http://cxbio.com/Article/pnaspnasjdkxjmywlyyz_1.html
BMJ子刊解读!多喝绿茶和咖啡或能明显降低2型糖尿病患者的全因死亡风险 最高可达63%!
近日,一篇发表在国际杂志BMJ Open Diabetes Research & Care上题为“Additive effects of green tea and coffee on all-cause mortality in patients with type 2 diabetes mellitus: the Fukuoka Diabetes Registry”的研究报告中,来自日本九州大学等机构的科学家们通过研究发现,摄入大量绿茶和咖啡或与2型糖尿病患者全因死亡风险降低直接相关。[查看]
http://cxbio.com/Article/bmjzkjddhlchkfhnmxjd_1.html
高纯度EIA诊断开发专用 辣根过氧化物酶 CAS:9003-99-0
辣根过氧化物酶(Horseradish Peroxidase, HRP, CAS#9003-99-0),来源于辣根,在临床检验中有广泛的作用。既可以用作生化反应中的指示剂,也可以用作免疫反应(尤其是ELISA)中标记试剂,是酶标抗体的关键原料。辣根过氧化物酶作为多个试剂盒显色体系的关键成分,对试剂盒的质量有重要影响。西宝生物提供优质的辣根过氧化物酶(HRP),纯度高,稳定性好,咨询热线400-021-8158。[查看]
http://cxbio.com/Article/lggyhwm_1.html
Fluorospark(R) 激酶/<font color='red'>AD</font>P 多重检测试剂盒(291-77401)
Fluorospark(R) 激酶/ADP 多重检测试剂盒(291-77401)Fluorospark(R) Kinase/ADP Multi-Assay Kit是和光(wako)与日本东京大学新药研究机构共同研发的ADP荧光检测试剂盒。拥有高通量筛选(HTS)必备的高灵敏度、高准确度、低成本、简便等特性。本产品不仅可检测激酶,同时可用于检测产生ADP的酶(如ATP酶、乙酰基—CoA羧化酶)的活性[查看]
http://cxbio.com/Article/291-77401_1.html
Nature:开发出一种适应小鼠的SARS-CoV-2模型,为测试一系列药物和疫苗奠定基础
在一项新的研究中,来自美国北卡罗来纳大学教堂山分校等研究机构的研究人员开发出的一种新的COVID-19小鼠模型重现了这种人类疾病的许多特征,并有助于推动COVID-19候选疫苗进入临床试验。相关研究结果于2020年8月27日在线发表在Nature期刊上,论文标题为“A mouse-adapted model of SARS-CoV-2 to test COVID-19 countermeasures”。[查看]
http://cxbio.com/Article/naturekfcyzsyxsdsars_1.html
进口 高品质 抗地高辛抗体(anti-digoxin antibody,<font color='red'>AD</font>A)
抗地高辛抗体(anti-digoxin antibody,ADA)。 地高辛(Digoxin)是一种从洋地黄提取出的beta抑制剂性的药物。由于地高辛的治疗指数狭窄,用药过量与用药不足时的症状相似,加之其个体差异大,故中毒的发生率高,是临床上难掌握药物。目前解除地高辛毒性的有效的方法是应用由地高辛抗体。此外,采用抗地高辛抗体的免疫分析法监测血清/血浆地高辛浓度已成为当今治疗性药物监测的典范。[查看]
http://cxbio.com/Article/jkgpzkdgxktantidigox_1.html
科学家发现口服小剂量代谢化合物可恢复小鼠生育能力
近日,发表在发表在Cell Reports上的一项研究中,研究人员使用小剂量能逆转卵子衰老过程的代谢化合物,成功提升了老年雌性小鼠的生育率,这为一些受孕困难的妇女带来了希望。该研究提到的分子和“前体”的名字分别为NAD(烟酰胺腺嘌呤二核苷酸)和NMN(烟酰胺单核苷酸)。[查看]
http://cxbio.com/Article/kxjfxkfxjldxhhwkhfxs_1.html
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ADP-dependent Hexokinase
Diaphorase (NADH)
Diaphorase (NADH)
Diaphorase (NADPH)
Diaphorase (NADPH)
NAD Synthetase
NAD Synthetase
Adenosine Deaminase,from calf intestine, suspension
Adenosine Deaminase,from calf intestine, suspension
Glutamate Dehydrogenase (NAD(P)),from E.coli overproducer, lyophilizate
Glutamate Dehydrogenase (NAD(P)),from E.coli overproducer, lyophilizate
Glutamate Dehydrogenase (NAD(P)),from beef liver, lyophilizate
Glutamate Dehydrogenase (NAD(P)),from beef liver, lyophilizate
Glutamate Dehydrogenase (NAD(P)),from beef liver, chemically modified, lyophilizate
Glutamate Dehydrogenase (NAD(P)),from beef liver, chemically modified, lyophilizate
Glutamate Dehydrogenase (NAD(P)),from beef liver, solution
Glutamate Dehydrogenase (NAD(P)),from beef liver, solution
D-乳酸脱氢酶(D-LDH), Grade I
D-乳酸脱氢酶(D-LDH), Grade I
D-乳酸脱氢酶(D-LDH), Grade II
D-乳酸脱氢酶(D-LDH), Grade II
NAD(P)H Dehydrogenase (quinone) (Diaphorase),from pig heart, suspension
NAD(P)H Dehydrogenase (quinone) (Diaphorase),from pig heart, suspension
Liberase MTF C/T, GMP Grade,sterile filtered, lyophilizate
Liberase MTF C/T, GMP Grade,sterile filtered, lyophilizate
Liberase T-Flex, Research Grade,sterile filtered, lyophilizate
Liberase T-Flex, Research Grade,sterile filtered, lyophilizate
Endoproteinase Asp-N, Sequencing Grade,from a mutant of Pseudomonas fragi, lyophilizate
Endoproteinase Asp-N, Sequencing Grade,from a mutant of Pseudomonas fragi, lyophilizate
Endoproteinase Glu-C, Sequencing Grade,from Staphylococcus aureus V8, lyophilizate
Endoproteinase Glu-C, Sequencing Grade,from Staphylococcus aureus V8, lyophilizate
Endoproteinase Lys-C, Sequencing Grade,from Lysobacter enzymogenes, lyophilizate
Endoproteinase Lys-C, Sequencing Grade,from Lysobacter enzymogenes, lyophilizate
Endoproteinase Lys-C, Sequencing Grade,from Lysobacter enzymogenes, solution
Endoproteinase Lys-C, Sequencing Grade,from Lysobacter enzymogenes, solution
Glucose Dehydrogenase (NAD Dependent)
Glucose Dehydrogenase (NAD Dependent)
Glucose Oxidase (GOD), Grade I,from Aspergillus niger overproducer, lyophilizate
Glucose Oxidase (GOD), Grade I,from Aspergillus niger overproducer, lyophilizate
Glucose Oxidase (GOD), Grade II,from Aspergillus niger overproducer, lyophilizate
Glucose Oxidase (GOD), Grade II,from Aspergillus niger overproducer, lyophilizate
Lactate 2-Monooxygenase (Lactate oxidase), Grade I,from Aerococcus viridans, expressed in E. coli, lyophilizate
Lactate 2-Monooxygenase (Lactate oxidase), Grade I,from Aerococcus viridans, expressed in E. coli, lyophilizate
Lactate 2-Monooxygenase (Lactate oxidase), Grade II,from Aerococcus viridans, expressed in E. coli, lyophilizate
Lactate 2-Monooxygenase (Lactate oxidase), Grade II,from Aerococcus viridans, expressed in E. coli, lyophilizate
Peroxidase (POD), Grade II,from horse radish, lyophilizate
Peroxidase (POD), Grade II,from horse radish, lyophilizate
DADK嗪草酮标准品
DADK嗪草酮标准品
1-cis-3-Chloroallyl-3,5,7-triaza-1-azonia-adamantane chloride
1-cis-3-Chloroallyl-3,5,7-triaza-1-azonia-adamantane chloride
Oxadiargyl
Oxadiargyl
USP Solution Lead Acetate TS Conforms to USP 34
USP Solution Lead Acetate TS Conforms to USP 34
USP Solution Lead Acetate TS Conforms to USP 34
USP Solution Lead Acetate TS Conforms to USP 34
European Pharmacopoeia Reagent Lead acetate cotton
European Pharmacopoeia Reagent Lead acetate cotton
European Pharmacopoeia Reagent Lead acetate paper
European Pharmacopoeia Reagent Lead acetate paper
European Pharmacopeoia Lead Acetate Solution
European Pharmacopeoia Lead Acetate Solution
European Pharmacopoeia Reagent Molybdovanadic reagent
European Pharmacopoeia Reagent Molybdovanadic reagent
European Pharmacopoeia Reagent 0.1M Lead Nitrate
European Pharmacopoeia Reagent 0.1M Lead Nitrate
European Pharmacopoeia Reagent Concentrated to make Cadmium Standard sol. (0.1% Cd)
European Pharmacopoeia Reagent Concentrated to make Cadmium Standard sol. (0.1% Cd)
European Pharmacopoeia Lead Solution (0.1% Pb)
European Pharmacopoeia Lead Solution (0.1% Pb)
European Pharmacopoeia Reagent Concentrate to make Lead solution (100ppm Pb)
European Pharmacopoeia Reagent Concentrate to make Lead solution (100ppm Pb)
EDDP perchlorate (Methadone metabolite),100ug/mL (as pyrolinium) 于甲醇
EDDP perchlorate (Methadone metabolite),100ug/mL (as pyrolinium) 于甲醇
EDDP perchlorate (Methadone metabolite),1.0mg/mL (as pyrrolinium) 于甲醇
EDDP perchlorate (Methadone metabolite),1.0mg/mL (as pyrrolinium) 于甲醇
Loratadine impurity F
Loratadine impurity F
氧化铝 (Reduction Grade) 标准物质
氧化铝 (Reduction Grade) 标准物质
MAB<HCG>M-INN22-IgG Human chorionic gonadotropin b-chain
MABM-INN22-IgG Human chorionic gonadotropin b-chain