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2022 - 03 - 17
来源:生物谷 2021-03-14 00:052021年3月12日讯/生物谷BIOON/--汽水是一种备受欢迎的饮料,在全世界被广泛消费。食品制造商为了丰富汽水的口味,开发了各种汽水饮品。其中不乏含糖饮料。我们知道,食品中的添加糖会给健康带来负面影响,比如增加心血管疾病、肥胖和糖尿病风险等。那么,饮用含糖汽水对乳腺癌患者的影响如何呢?近日,来自美国布法罗大学的一项新研究表明,乳腺癌患者经常饮用含糖汽水会增加全死亡的风险,尤其是因乳腺癌死亡的风险。与从不或很少喝含糖汽水的女性相比,每周喝五次或以上含糖汽水的女性其全因死亡率要高出62%,而死于乳腺癌的可能性要高出85%。相关研究结果于3月2日发表在美国癌症研究协会的Cancer Epidemiology Biomarkers & Prevention期刊上,标题为Sugar-Sweetened Soda Consumption and Total and Breast Cancer Mortality: The Western New York Exposures and Breast Cancer (WEB) Study。该研究的第一作者、布法罗大学公共卫生和健康职业学院流行病学和环境卫生系的博士生Nadia Koyratty说,关于汽水和乳腺癌的研究是非常新颖的话题。因为乳腺癌非常普遍,关于生活方式选择的建议对乳腺癌幸存者...
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2019 - 01 - 07
2019年1月7日 讯 /生物谷BIOON/ --诱发癌症有很多遗传原因,比如有些突变会遗传自父母,而其它则是后天获得性的突变,比如因外界因素或DNA复制的错误导致等,大规模的基因组测序在识别因体细胞突变所诱发的癌症上取得了一系列研究成果,但这种技术却无法有效识别因遗传性突变所诱发的癌症,而且识别这些遗传突变的主要来源仍然是基于家族性的研究。图片来源:iran-daily.com近日,一项刊登在国际杂志Nature Communications上的研究报告中,来自巴塞罗那基因组研究中心的科学家们通过研究开发了一种新型的统计学方法,其能够从肿瘤测序数据中鉴别出癌症易感性基因;该方法使用了一种古老的想法,即癌基因通常需要“两次击打”(two hits)才能够致癌,研究者表示,这种方法能帮助他们从当前癌症基因组数据库中系统性地鉴别出相关的基因。研究者将这种统计学方法命名为“ALFRED”,目前该技术已经鉴别出了13个候选的癌症易感性基因,其中10个基因都是此前并未发现的;Ben Lehner博士说道,我们对30种不同类型的肿瘤患者进行研究,将这种方法应用于1万多名患者的基因组序列中,最终鉴别出了已知的和一些新型的可能性癌症易感基因,这些基因有可能会诱发一定的患癌风险。研究者指出,新型的癌症易感基因或许在多种类型癌症的发生上扮演着关键角色,比如,其与14%的卵巢肿瘤、1%的乳腺癌等癌症直接...
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2019 - 05 - 27
5月24日,记者从中国农业科学院科研进展通报会上获悉,由中国农业科学院哈尔滨兽医研究所(以下称哈兽研)自主研发的非洲猪瘟疫苗取得了阶段性成果,实验室研究结果表明,具有良好的生物安全性和免疫保护效果。非洲猪瘟疫苗科研攻关负责人介绍,目前在非洲猪瘟疫苗创制阶段主要取得五项进展:一是分离我国第一株非洲猪瘟病毒。建立了病毒细胞分离及培养系统和动物感染模型,对其感染性、致病力和传播能力等生物学特性进行了较为系统的研究,并揭示了我国非洲猪瘟流行毒株的基因组特点和进化关系。二是创制了非洲猪瘟候选疫苗,实验室阶段研究证明其中两个候选疫苗株具有良好的生物安全性和免疫保护效果。三是两种候选疫苗株体外和体内遗传稳定性强。分别将两种候选疫苗株在体外原代细胞中连续传代,其生物学特性及基因组序列无明显改变,猪体内连续传代,也未发现明显毒力返强现象。四是明确了最小保护接种剂量,证明大剂量和重复剂量接种安全。五是临床前中试产品工艺研究初步完成。目前已建立两种候选疫苗的生产种子库,初步完成了疫苗生产种子批纯净性及外源病毒检验,初步优化了候选疫苗的细胞培养及冻干工艺。非洲猪瘟疫情发生后,党中央、国务院高度重视疫情防控科研攻关。中国农科院科技局局长任天志介绍,按照农业农村部党组统一部署,中国农科院将非洲猪瘟防控作为服务国家战略需求的重大科研攻关任务,集聚优势资源,第一时间组建非洲猪瘟防控科技攻关项目组,以哈尔滨兽医研究...
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时间: 2019 - 04 - 17
描述The 2018 Attune NxT Acoustic Focusing Cytometer has expanded functionalities to drive your research forward. Designed and developed to remove common barriers associated with flow cytometry, the evolutionary capabilities of the Attune NxT flow cytometer offer adaptable optical configuration options so you can get the most out of your multicolor analysis.• Free Attune NxT software with researcher-inspired upgrades• New green laser option for expanded utility and fluorochrome options• Simple push...
型号:
时间: 2019 - 04 - 17
描述The 2018 Attune NxT Acoustic Focusing Cytometer has expanded functionalities to drive your research forward. Designed and developed to remove common barriers associated with flow cytometry, the evolutionary capabilities of the Attune NxT flow cytometer offer adaptable optical configuration options so you can get the most out of your multicolor analysis.• Free Attune NxT software with researcher-inspired upgrades• New green laser option for expanded utility and fluorochrome options• Simple push...
型号:
时间: 2019 - 04 - 17
描述7-aminoactinomycin D (7-AAD) is a fluorescent intercalator that undergoes a spectral shift upon association with DNA. 7-AAD/DNA complexes can be excited by the 488 nm laser and has an emission maxima of 647 nm, making this nucleic acid stain useful for multicolor fluorescence microscopy and flow cytometry. 7-AAD appears to be generally excluded from live cells, but can be used with cells that have been fixed and permeabilized. 7-AAD has been used for cell cycle analysis by flow cytometry....
产品名称: Dynabeads™ CD45
型号:
时间: 2019 - 04 - 17
DescriptionDynabeads® CD45 are superparamagnetic beads covalently coupled to anti-human CD45 antibody that enable isolation or depletion of CD45+ leucocytes directly from whole blood, buffy coat, or MNC suspensions. Dynabeads® CD45 can also be used to enrich epithelial tumor cells. The CD45 antigen is weakly expressed on myeloid cells. To efficiently deplete or isolate all leucocytes including myeloid cells, use Dynabeads® CD15 (Cat. No. 11137D) in combination with Dynabeads®...
型号:
时间: 2019 - 04 - 15
描述This achromat objective is ideal for general applications. This is a coverslip-corrected objective that is optimized for imaging through #1.5 coverslips. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies needs across the spectrum of magnifications and optical specifications.Additional characteristics of this EVOS® objective:• Magnification: 50X• Numerical Aperture: 0.95• Working Distance:...
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时间: 2019 - 04 - 15
描述The EVOS M7000 Imaging System is a high-performance, fully automated, inverted, multi-channel fluorescence and transmitted light imaging system. It was developed to meet today’s expectations for image quality, user interface interactions, data generation speed and flexibility, and end-user value. The powerful and time-saving acquisition tools with enhanced autofocus algorithms and automated routines for microwell plate assays, time-lapse live cell imaging, area scanning in time lapse and Z-sta...
型号:
时间: 2019 - 04 - 15
描述The EVOS® FL Imaging System is a fully integrated, digital, inverted imaging system for four-color fluorescence and transmitted-light applications. It is powerful, yet easy-to-use and delivers high-definition images with exceptional convenience. The unique light cubes, sensitive camera, and precision-engineered optical system make the EVOS® FL system ideal for both demanding and routine fluorescence imaging applications.The EVOS® FL Imaging System offers you these important ad...
型号:
时间: 2019 - 04 - 15
描述The EVOS® Onstage Master Plate is part of the EVOS® Onstage Incubator and holds the EVOS® Onstage Vessel Holder. The EVOS® Onstage Incubator is an environmental chamber designed specifically for use with the EVOS® FL Auto Imaging System. This master plate plus vessel holder design, with vessel holders available that accommodate various types of cell culture vessels, provides flexibility in your approach to extended time-lapse imaging experiments under precisely co...
型号:
时间: 2019 - 04 - 15
描述EVOS® Onstage vessel holders maximize your choice of cell culture vessels when conducting time-lapse imaging experiments using the EVOS® FL Auto Imaging System equipped with an EVOS® Onstage Incubator. EVOS® Onstage vessel holders allow a perfect fit of your micro-well plates or cell culture flasks/dishes to the master plate of the EVOS® Onstage Incubator for increased precision in sample alignment. This particular vessel holder accommodates two 25-mL T-flasks. With ...
型号:
时间: 2019 - 04 - 15
描述EVOS® Onstage vessel holders maximize your choice of cell culture vessels when conducting time-lapse imaging experiments using the EVOS® FL Auto Imaging System equipped with an EVOS® Onstage Incubator. EVOS® Onstage vessel holders allow a perfect fit of your micro-well plates or cell culture flasks/dishes to the master plate of the EVOS® Onstage Incubator for increased precision in sample alignment. This particular vessel holder accommodates multi-well plates (dimensi...
型号:
时间: 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder securely holds two 25 x 75 mm standard or chamber microscope slides and is specific for the automated stage of the EVOS® FL Auto Imaging System. It is just one of many easy-to-change vessel holders and stage plates available for this instrument plat...
型号:
时间: 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder accommodates one Greiner/BD T-25 flask. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samples in a range of ...
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