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如何平衡饮食中的脂肪和碳水化合物？
如何平衡饮食中的脂肪和碳水化合物？
2019 - 09 - 12
019年9月29日讯 /生物谷BIOON /--健康饮食中脂肪和碳水化合物的完美含量是多少？加拿大麦克马斯特大学的科学家们分析了来自世界18个国家的13.5万多人的饮食日记，以找出答案。研究结果支持了那句古老的格言：适量的摄入碳水化合物和脂肪对你的心脏有好处，可以延年益寿。研究参与者的碳水化合物摄入量占每日热量的46%到77%不等。这一比例越高，死亡、心脏病发作和中风的风险就越大。然而，低碳水化合物并没有带来好处--只要你把注意力集中在水果、蔬菜和全谷物上，而不是白面包和其他精制谷物、白米饭和高糖食物上，每天摄入50%的卡路里似乎就刚刚好。图片来源：https://cn.bing.com更多的惊喜来自脂肪的摄入。首先，每天从脂肪中摄取35%卡路里的人实际上比那些将脂肪含量限制在10%的人死亡的风险更低。也许并不是每个人都有必要将饱和脂肪控制在总热量的10%以下，事实上，低于7%甚至是有害的。一个关键的建议是如何替换多余的碳水化合物。最大的好处是多不饱和脂肪的食物，如核桃，葵花籽和亚麻籽，和脂肪含量高的鱼。需要注意的是：这些发现是基于一项观察性研究，因此研究人员不能直接将因果联系起来。您将希望将它们个性化到您独特的健康档案中。如果你有任何健康问题，和你的医生谈谈如何最好地解释结果。（生物谷Bioon.com）
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J Appl Physiol：中年时期的有氧运动或能预防多种与年龄相关的慢性疾病
J Appl Physiol：中年时期的有氧运动或能预防多种与年龄相关的慢性疾病
2021 - 11 - 06
来自美国和日本的科学家们通过研究发现，由于进行了有规律的有氧运动，相比年轻成年人而言，中年的耐力运动员还会显示出相当水平的上述因素。本文研究结果提供了强有力的迹象表明，血压的控制和血管弹性程度的改善或有助于更好地改善中年人群大脑血流的调节。2021年12月19日 讯 /生物谷BIOON/ --中年有氧运动或能显著影响年龄相关的大脑和心血管调节的变化，中年耐力运动员要比相同年龄组的久坐成年人有着更好的血压控制和更高的动脉弹性（一种心血管疾病风险的无创测量）。近日，一篇发表在国际杂志Journal of applied Physiology上题为“Midlife aerobic exercise and dynamic cerebral autoregulation： associations with baroreflex sensitivity and central arterial stiffness”的研究报告中，来自美国和日本的科学家们通过研究发现，由于进行了有规律的有氧运动，相比年轻成年人而言，中年的耐力运动员还会显示出相当水平的上述因素。本文研究结果提供了强有力的迹象表明，血压的控制和血管弹性程度的改善或有助于更好地改善中年人群大脑血流的调节。图片来源：Pixabay/CC0 Public Domain中年机体动脉的僵硬程度与晚年中风和痴呆症风险增加有关，同时还会增加机...
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Nature：挑战常规！揭示一些乳腺癌和卵巢癌对PARP抑制剂产生耐药性的新机制
Nature：挑战常规！揭示一些乳腺癌和卵巢癌对PARP抑制剂产生耐药性的新机制
2018 - 07 - 20
一种非常复杂的治疗一些乳腺癌和卵巢癌的方法就是使用一类叫做PARP抑制剂的药物。PARP抑制剂旨在利用让发生某些突变的肿瘤特别致命的缺陷。然而，这种靶向癌症治疗方法有时会失败，科学家们迫切地想要知道其中的原因。 如今，在一项新的研究中，美国洛克菲勒大学的Titia de Lange教授及其团队对这种耐药性机制提供了新的认识，并且为抵抗这种耐药性提供了新的希望。他们发现了由基因BRCA1发生的错误引发的一些癌症逃避旨在杀死它们的定制药物的分子机制。这一发现也挑战了之前针对这些PARP抑制剂成功地或未能给患者带来益处的机制作出的猜测。相关研究结果于2018年7月18日在线发表在Nature期刊上，论文标题为“53BP1–RIF1–shieldin counteracts DSB resection through CST- and Polα-dependent fill-in”。图片来自Laboratory of Cell Biology and Genetics at The Rockefeller University。他们的发现有助于解释为什么某些癌症会对PARP抑制剂作出反应，而其他癌症却没有---这种认识最终可能有助于改善对患者的治疗。 缺陷和机会 专家们预测今年将有大约288000例乳腺癌和卵巢癌新确诊病例。这些癌症的很大一部分是由人类基因组中的两个最臭名昭着的基因--- ...
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EVOS™ Vessel Holder, universal
产品名称： EVOS™ Vessel Holder, universal
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...
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EVOS™ Vessel Holder, Greiner T-75 flask
产品名称： EVOS™ Vessel Holder, Greiner T-75 flask
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...
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EVOS™ Vessel Holder, Hemocytometer
产品名称： EVOS™ Vessel Holder, Hemocytometer
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...
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EVOS™ Vessel Holder, Nunc™ T-75 flask
产品名称： EVOS™ Vessel Holder, Nunc™ T-75 flask
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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EVOS™ Vessel Holder, two 25-cm T-flasks
产品名称： EVOS™ Vessel Holder, two 25-cm T-flasks
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 two 25 cm T-flasks. 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 ...
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EVOS™ Vessel Holder, one 100-mm Petri dish
产品名称： EVOS™ Vessel Holder, one 100-mm Petri dish
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 100 mm Petri dish. 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 vess...
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EVOS™ Vessel Holder, two 60-mm Petri dishes
产品名称： EVOS™ Vessel Holder, two 60-mm Petri dishes
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 two 60 mm Petri dishes. 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...
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EVOS™ Vessel Holder, four 35-mm Petri dishes
产品名称： EVOS™ Vessel Holder, four 35-mm Petri dishes
型号：
时间： 2019 - 04 - 12
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 four 35 mm Petri dishes. 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 ve...
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EVOS™ Vessel Holder, two 25 x 75 mm slides
产品名称： EVOS™ Vessel Holder, two 25 x 75 mm slides
型号：
时间： 2019 - 04 - 12
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 two 25 x 75 mm slides. 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 vess...
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EVOS™ 4X Objective, fluorite, LWD, phase-contrast
产品名称： EVOS™ 4X Objective, fluorite, LWD, phase-contrast
型号：
时间： 2019 - 04 - 12
描述This fluorite objective is ideal for fluorescence and demanding transmitted-light applications. This is a long working distance (LWD) objective that is optimized for the imaging of slides, cell culture dishes and flasks, and microtiter plates. This is also a phase-contrast objective, making it useful for hard-to-see, translucent speciments. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies nee...
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EVOS™ Light Cube, Cy™5
产品名称： EVOS™ Light Cube, Cy™5
型号：
时间： 2019 - 04 - 12
描述All EVOS® fluorescence imaging systems and the Countess® II FL Automated Cell Counter contain our unique, proprietary LED light cubes. This world-leading light engine outputs remarkable intensity over a short light path that delivers superior fluorophore excitation. Each cube contains an LED, condensing optics, and hard-coated filters. EVOS® light cubes are user-changeable and automatically recognized by the system. The Cy®5 light cube is ideal for use with Alexa Fluor&...
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EVOS™ Light Cube, RFP
产品名称： EVOS™ Light Cube, RFP
型号：
时间： 2019 - 04 - 12
描述All EVOS® fluorescence imaging systems and the Countess® II FL Automated Cell Counter contain our unique, proprietary LED light cubes. This world-leading light engine outputs remarkable intensity over a short light path that delivers superior fluorophore excitation. Each cube contains an LED, condensing optics, and hard-coated filters. EVOS® light cubes are user-changeable and automatically recognized by the system. The RFP light cube is ideal for use with Alexa Fluor® ...
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1000种食物中都存在的这种物质，可能严重损害人体免疫系统！
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