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1
2018 - 06 - 22
对创伤经历的回忆会导致精神健康问题,如创伤后应激障碍(PTSD),这会破坏一个人的生活。据估计,当前将近三分之一的人会在他们生命中的某个时刻遭受恐惧或应激相关的障碍。如今,一项新的研究在细胞水平展示了一种疗法如何能够治疗长期的创伤记忆。相关研究结果发表在2018年6月15日的Science期刊上,论文标题为“Reactivation of recall-induced neurons contributes to remote fear memory attenuation”。论文通信作者、瑞士洛桑联邦理工学院(EPFL)教授Johannes Gräff说,“我们的研究结果首次揭示了让成功治疗创伤记忆变得可能的过程。” 在治疗创伤记忆领域,对恐惧衰减(fear attenuation)是否涉及通过新的安全记忆痕迹(memory trace of safety)或将原始的恐惧记忆痕迹(memory trace of fear)重写为安全记忆痕迹来抑制原始的恐惧记忆痕迹,人们长期以来争论不止。图片来自EPFL / Gräff Group。这种争论的一部分与我们总体上还不能完全理解神经元如何存储记忆的事实相关。虽然这项研究取得的新发现不能排除这种抑制机制,但是它们首次证实了重写创伤记忆在治疗创伤记忆中的重要性。这个领域的研究重点在于理解大脑减少创伤记忆的能力...
2
2019 - 04 - 04
英国国家医疗服务系统(NHS)近日批准了三种新的甲状腺癌疗法作为甲状腺癌的常规疗法。由国家健康和护理研究所(NICE)提出的推荐指南建议把cabozantinib(Cometriq)和索拉菲尼sorafenib(Nexavar)转移进癌症药物基金。被批准的第三种药物是乐伐替尼(Lenvatinib/Lenvima),过去这个药物仅仅在出于同情的情况下提供使用。英国癌症研究中心的高级政策顾问Rose Gray对这些决定感到高兴,他认为这对于病人而言是好消息。病人选择有限!Cabozantinib被推荐用于治疗无法进行手术治疗或者已经转移的甲状腺髓样癌。英国每年约有80例这种病人。Gray说临床结果显示Cabozantinib能够延缓癌症进展。这是仅有的治疗甲状腺髓样癌的两种药物之一。Lenvatinib和sorafenib被批准用于治疗手术或者放射性碘治疗无效的分化型甲状腺癌,这是最常见的种类。手术或者放射性碘治疗后,这两种药物是这些病人的唯二选择。每年英国约有200人能由于这两种药物获益。Lenvatinib和sorafenib比通常认为可以接受的效果差一点,但是在病人报道他们生活质量得到改善后,NICE批准了这两种药物。“NICE从一些病人口中听说了这些药物如何改善症状,这表明这些药物在癌症病人身上的价值。”Gray说道。NICE健康技术评估中心执行主任Mirella Marlo...
3
2019 - 08 - 09
今日,美国FDA批准罗氏(Roche)公司开发的NTRK,ROS1和ALK抑制剂Rozlytrek(entrectinib)上市,治疗携带NTRK基因融合的实体瘤患者,以及携带ROS1基因突变的非小细胞肺癌患者。这也是美国FDA批准的第三款“不限癌种”的抗癌疗法。自从去年Loxo Oncology/拜耳(Bayer)公司联合开发的TRK抑制剂Vitrakvi(larotrectinib)获批以来。“不限癌种”抗癌疗法得到了广大业界人士和患者的关注。还有哪些“不限癌种“疗法即将问世?“不限癌种“的抗癌疗法发展的前景如何?今天的这篇文章里,药明康德内容团队将结合公开资料,与读者分享这些问题的答案。“不限癌种“疗法的理论基础和面对的挑战我们知道,基因突变是驱动正常细胞癌变的关键。近年来高通量测序技术的进步,让我们获得了许多对癌症背后的分子生物学机理的洞见。基于这些洞见,我们对癌症的分类不再局限于癌症起源的组织,而是基于肿瘤细胞携带的特定基因变异。这一基于分子生物学生物标志物的分类方法加快了靶向疗法的开发,而“不限癌种“的抗癌疗法可以说是靶向疗法中比较特别的一个分支。这些靶向疗法的靶点在起源于不同组织的多种癌症中存在,而且”不限癌种“疗法能够在多种癌症类型中表现出卓越的疗效。例如去年获批的Vitrakvi在携带NTRK基因融合的患者中能够达到81%的总缓解率。而刚刚获得FDA批准的Rozl...
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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 ...
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 has a 25.4 mm opening and accommodates most vessel types. 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 samp...
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 T-75 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 ves...
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 a hemocytometer. 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 vessel hol...
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 Nunc® T-75 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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