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生物医学科技前线

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看看这世界生物医学科学又进步了多少？
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Showing posts older than #4551 · Back to latest

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Post #4550 99
这个被忽视的激素可能是为什么血压无法降低的原因
一项大型美国研究显示，高血压难以治疗的患者中，超过四分之一的人可能患有被忽视的激素问题。研究发现，压力常常与之相关的高皮质醇水平在这些患者中高达27%，远高于预期。这一隐性状况可能是为什么标准药物无效的原因。该发现可能会导致新的…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-30 15:50 GMT+8（北京时间）
#高血压 #高皮质醇 #压力 #激素问题
ScienceDaily This overlooked hormone could be why your blood pressure won’t drop A large U.S. study reveals that more than a quarter of people with hard-to-treat high blood pressure may have an overlooked hormone problem. Elevated cortisol—often linked to stress—was found in 27% of these patients, far higher than expected. This hidden…
Post #4549 128
简单疗法胜过药物治疗关节痛
一项近10,000例患者的研究表明，简单的非药物治疗，如膝盖护具、水疗和锻炼，可以显著缓解关节软骨病的症状。这些方法不仅可以减轻疼痛和改善运动能力，还可以避免常见药物的风险。研究结果表明，低成本和易于访问的疗法在未来可能会在医生治…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-30 20:52 GMT+8（北京时间）
#关节软骨病 #非药物治疗 #水疗 #锻炼
ScienceDaily Simple therapies beat drugs for knee arthritis pain relief A major analysis of nearly 10,000 patients shows that simple, non-drug treatments like knee braces, hydrotherapy, and exercise can significantly ease knee osteoarthritis symptoms. These approaches not only reduce pain and improve mobility, but also avoid…
Post #4548 127
某些恐龙能像巨人般站立直立，但随着生长而失去优势
研究发现较小的蜥脚类恐龙可以轻松地站立在后肢上，获得更高的食物来源和防御优势。计算机模拟表明它们的骨骼比其更大的亲戚更好地承受应力。然而，随着它们的生长，巨大的重量使得这种姿势变得难以维持。最初作为一种有益的幼年策略，随着成…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-30 21:08 GMT+8（北京时间）
#蜥脚类恐龙 #计算机模拟 #骨骼应力 #恐龙行为
ScienceDaily Some dinosaurs could rise up like giants — until they grew too big Certain smaller sauropods could stand on their hind legs with surprising ease, giving them access to higher food and a defensive edge. Computer simulations show their bones handled stress better than those of their larger relatives. However, as they grew…
Post #4547 118
美国国家卫生研究院暂停评估潜在中风治疗药物的临床试验
研究发现低剂量利伐沙班相较于常规治疗方法而言不安全且无效
来源: NIH ｜ 阅读全文
#美国国家卫生研究院 #临床试验 #中风治疗 #利伐沙班
National Institutes of Health (NIH) NIH halts arm of clinical trial evaluating a potential stroke treatment Study found low-dose rivaroxaban to be unsafe and ineffective compared to standard of care.
Post #4546 142
在微重力中：精子失去方向感
研究表明，微重力环境下，精子虽然仍能正常游动，但失去了方向感，这使得它们难以到达并与卵子结合。在模拟太空条件的实验室实验中，精子通过模拟生殖道的迷宫的成功率大大降低，实验鼠的受精率下降约30%。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-30 11:03 GMT+8（北京时间）
#微重力 #精子 #方向感 #受精率
ScienceDaily Lost in space: Microgravity makes sperm lose their sense of direction Making babies in space may be more complicated than expected, as new research shows sperm struggle to navigate in microgravity. Scientists found that while sperm can still swim normally, they lose their sense of direction without gravity, making it harder…
Post #4545 115
仅需几分钟的运动就能降低8种重大疾病的风险
研究发现，每天花几分钟时间出气喘的运动，能显著降低心脏病、痴呆和糖尿病等重大疾病的风险。近10万人的大规模研究表明，不仅运动的量很重要，运动的强度也很重要。短暂的剧烈运动，如急匆匆地追赶公交车或快速爬楼梯，尤其是与炎症性疾病和脑…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-30 13:07 GMT+8（北京时间）
#运动 #疾病风险 #心脏病 #痴呆 #糖尿病
ScienceDaily Just a few minutes of effort could lower your risk of 8 major diseases Just a few minutes of getting out of breath each day could dramatically cut your risk of major diseases—including heart disease, dementia, and diabetes. A large study of nearly 100,000 people found that it’s not just how much you move, but how intensely you…
Post #4544 98
中风可能带来一种看起来像重生一样的脑部变化
研究人员分析了超过500名中风幸存者的脑扫描发现，中风后大脑可能会“更新”自己。受损的一侧大脑似乎会比正常侧更快老化，但另一侧大脑可能会变得年轻。这一意想不到的变化反映了大脑试图重新编程自己，强化健康区域以弥补丧失的功能。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-29 18:34 GMT+8（北京时间）
#中风 #大脑 #重生 #脑部变化
ScienceDaily Stroke triggers a hidden brain change that looks like rejuvenation After a stroke, the brain may do something surprisingly hopeful—it can “refresh” parts of itself. Researchers analyzing brain scans from over 500 stroke survivors found that while the damaged side of the brain appears to age faster, the opposite, unaffected…
Post #4543 77
科学家揭开海洋塑料之谜——令人震惊的答案
科学家发现，海洋的“失踪”塑料并没有消失，它们已经分解成数万亿个微小的纳米塑料，遍布水、空气和生物体内，这些微小颗粒可能存在于我们体内，引发严重的担忧。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-29 20:41 GMT+8（北京时间）
#海洋塑料 #纳米塑料 #环境污染
ScienceDaily Scientists solved the mystery of missing ocean plastic—and the answer is alarming Scientists have discovered that the ocean’s “missing” plastic hasn’t vanished—it has broken down into trillions of invisible nanoplastics now spread through water, air, and living organisms. These tiny particles may be everywhere, including inside our bodies…
Post #4542 74
长期认知速度训练可能延缓痴呆诊断
一项由NIH资助的研究发现，主要通过潜意识思维而非意识思维的策略，可能带来积极的结果
来源: NIH ｜ 阅读全文
#认知速度训练 #痴呆诊断 #潜意识思维
Post #4541 104
这项新疗法可以在不使用阿片类药物或成瘾风险的情况下关闭疼痛
科学家们开发了一种新的基因疗法，能够在大脑中静默疼痛——不带来阿片类药物的成瘾风险。利用人工智能来映射疼痛的处理方式，他们创造了一种针对性的“关闭开关”，模仿吗啡的益处但跳过了它的危险副作用。在早期测试中，它提供了持久的缓解而不…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-29 08:57 GMT+8（北京时间）
#基因疗法 #疼痛治疗 #人工智能 #阿片类药物 #成瘾风险
ScienceDaily This new therapy turns off pain without opioids or addiction Scientists have developed a new gene therapy that quiets pain at its source in the brain—without the addictive risks of opioids. Using AI to map how pain is processed, they created a targeted “off switch” that mimics morphine’s benefits but skips its dangerous…
Post #4540 165
科学家说证据很明显：电子烟比贴片和口香糖更有效帮助戒烟
研究人员通过分析近10年来14项大型综述的研究结果发现，尼古丁电子烟可能是戒烟的最有效工具之一。通过分析14项大型综述的研究结果，研究人员发现，尼古丁电子烟比传统方法如贴片、口香糖和行为支持更有效。虽然一些质量较低的研究产生了混…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-29 15:36 GMT+8（北京时间）
#电子烟 #戒烟 #尼古丁
ScienceDaily Scientists say the evidence is clear: E-cigarettes beat patches and gum in helping smokers quit Nicotine e-cigarettes may be one of the most effective tools yet for quitting smoking, according to a sweeping review of global research. By analyzing findings from 14 major reviews spanning nearly a decade, researchers found consistent, high-quality evidence…
Post #4539 165
What teens eat could be affecting their mental health more than we thought
What teens eat might matter more for their mental health than previously thought. A sweeping review of nearly 20 studies found that healthier diets are often linked t…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-29 16:02 GMT+8（北京时间）
ScienceDaily What teens eat could be affecting their mental health more than we thought What teens eat might matter more for their mental health than previously thought. A sweeping review of nearly 20 studies found that healthier diets are often linked to fewer depressive symptoms, while poor eating habits may go hand in hand with greater psychological…
Post #4538 136
新的胆固醇指南可能改变你何时进行检测
美国新一轮的胆固醇指南将重点转向更早、更个性化的预防心血管疾病。它建议人们尽早进行筛查，甚至在儿童时期，并强调不仅要追踪LDL（“坏”）胆固醇，还要考虑遗传风险因素，如脂蛋白(a)。新型风险计算器使用更广泛的健康数据来预测心脏病发作…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-29 17:43 GMT+8（北京时间）
#胆固醇 #心血管疾病 #预防 #风险计算器
ScienceDaily New cholesterol guidelines could change when you get tested A major new U.S. cholesterol guideline is shifting the focus toward earlier, more personalized prevention of heart disease. It urges people to start screening sooner—sometimes even in childhood—and highlights the importance of tracking not just LDL (“bad”)…
Post #4537 111
世卫组织成员国同意延长对疫情协议关键附件的谈判
世卫组织成员国同意延长对疫情协议中的病原体访问和利益共享（PABS）附件的谈判，预计在4月底恢复讨论，并在5月在世界卫生大会（WHA）上进行审议。
来源: WHO ｜ 阅读全文
发布时间: 2026-03-29 03:14 GMT+8（北京时间）
#世卫组织 #疫情协议 #PABS #病原体访问和利益共享
World Health Organization WHO Member States agree to extend negotiations on key annex to the Pandemic Agreement WHO Member States have agreed to extend negotiations on the Pathogen Access and Benefit Sharing (PABS) annex to the WHO Pandemic Agreement, with discussions to resume in late‑April ahead of its scheduled consideration by the World Health Assembly (WHA) in…
Post #4536 108
大规模的ADHD研究揭示了什么才有效
一项涵盖超过200项meta分析的大型ADHD治疗综述，打破了多年的混乱信息和炒作。为了让人们更好地理解这一点，研究人员推出了一个互动的公共网站，允许患有ADHD的人和临床医生探索什么才是有效的，帮助他们做出更明确、基于证据的决策——同时…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-02-10 14:32 GMT+8（北京时间）
#ADHD #meta分析 #治疗 #证据 #临床决策
ScienceDaily A massive ADHD study reveals what actually works A sweeping new review of ADHD treatments—drawing on more than 200 meta-analyses—cuts through years of mixed messaging and hype. To make sense of it all, researchers have launched an interactive, public website that lets people with ADHD and clinicians explore…
Post #4535 83
听力助听器并未改善记忆测试，但降低了痴呆风险
一项长期研究发现，中度听力损失的老年人佩戴助听器后，记忆或思维测试成绩并未提高，但研究结果显示，佩戴助听器的人群在七年内患痴呆症的风险明显降低。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-02-09 19:43 GMT+8（北京时间）
#听力助听器 #痴呆症 #记忆力 #思维力
ScienceDaily Hearing aids didn’t boost memory tests but dementia risk dropped A long-term study of older adults with moderate hearing loss found that hearing aids did not lead to better performance on memory or thinking tests, but the story did not end there. Over seven years, people who were prescribed hearing aids were significantly…
Post #4534 55
科学家发现一种将棕色脂肪转化为热量燃烧器的隐藏系统
科学家们找到了一个关键的生物学系统，帮助棕色脂肪燃烧能量。蛋白质SLIT3分解为两部分，每个部分引导血管和神经在棕色脂肪中生长。这些结构使组织能够吸收营养物质并迅速将它们转化为热量，而不是储存为脂肪。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-28 15:19 GMT+8（北京时间）
#棕色脂肪 #SLIT3 #能量燃烧
ScienceDaily Scientists discover a hidden system that turns brown fat into a calorie burner Scientists have identified a key biological system that helps brown fat burn energy by building the networks it needs to function. A protein called SLIT3 splits into two parts, with each piece guiding the growth of blood vessels and nerves inside brown fat.…
Post #4533 55
当你生病时为什么会突然失去食欲？
研究人员发现身体如何告诉大脑停止进食，当感染开始时，身体会逐渐减少食欲。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-28 16:35 GMT+8（北京时间）
#食欲 #感染 #身体
ScienceDaily Scientists discover why your appetite suddenly disappears when you’re sick Scientists have uncovered how your body actually tells your brain to stop eating when you’re sick. In a new study, researchers found that specialized cells in the gut detect parasites and send signals that ultimately trigger the brain to suppress appetite.…
Post #4532 66
常见的糖替代品与脑损伤和中风风险相关
研究表明，常见的糖替代品erythritol可能会干扰脑血管细胞，减少它们的放松能力，增加有害氧化应激，损害身体分解血栓的能力。这些变化可能会在常见的摄入量下提高中风风险。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-28 19:01 GMT+8（北京时间）
#糖替代品 #脑损伤 #中风风险 #erythritol
ScienceDaily Popular sugar substitute linked to brain damage and stroke risk A widely used sugar substitute found in everything from keto snacks to diet drinks may not be as harmless as it seems. New research shows that erythritol can disrupt brain blood vessel cells, reducing their ability to relax, increasing harmful oxidative stress…
Post #4531 79
新型碳材料可能使碳捕捉变得更便宜
科学家们创造了一种新型碳材料，这种材料可以使碳捕捉更加经济高效。通过精确控制氮原子排列方式，他们发现某些结构更好地捕获二氧化碳，并且使用远低于之前的热量释放。其中一种版本可以在60°C以下工作，这意味着它可以使用废热而不是昂贵的…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-03-28 20:05 GMT+8（北京时间）
#碳捕捉 #新型材料 #碳中和
ScienceDaily This new carbon material could make carbon capture far more affordable Scientists have created a new kind of carbon material that could make carbon capture much cheaper and more efficient. By carefully controlling how nitrogen atoms are arranged, they found certain structures capture CO2 better and release it using far less…
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