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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 #4051 · Back to latest

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Post #4050 38
超长跑可能损伤红细胞并加速衰老
研究表明，超长跑不仅仅会对肌肉和关节造成损伤，可能还会改变红细胞，使其变得不灵活，更加容易破裂，从而干扰它们在身体各个部位输送氧气的能力。科学家发现，超长跑可能会导致血液流动的强烈冲击和与炎症和氧化应激有关的分子损伤。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-02-21 20:59 GMT+8（北京时间）
#超长跑 #红细胞 #衰老
ScienceDaily Ultramarathons may damage red blood cells and accelerate aging Running extreme distances may strain more than just muscles and joints. New research suggests ultramarathons can alter red blood cells in ways that make them less flexible and more prone to breakdown, potentially interfering with how they deliver oxygen throughout…
Post #4049 37
高海拔对糖尿病的保护机制被科学家们揭示
研究人员发现，生活在高海拔地区似乎可以保护人体免受糖尿病的影响。随着氧气水平的下降，红细胞会进入一种新的代谢模式，并从血液中吸收大量的葡萄糖。这有助于人体在空气稀薄的环境中生存，同时也降低了血糖水平。科学家们还发现了一种药物，…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-02-21 21:43 GMT+8（北京时间）
#糖尿病 #高海拔 #红细胞 #葡萄糖
ScienceDaily Scientists discover why high altitude protects against diabetes Living at high altitude appears to protect against diabetes, and scientists have finally discovered the reason. When oxygen levels drop, red blood cells switch into a new metabolic mode and absorb large amounts of glucose from the blood. This helps the body…
Post #4048 38
“Celtic curse” hotspots found in Scotland and Ireland with 1 in 54 at risk
Researchers have mapped the genetic risk of hemochromatosis across the UK and Ireland for the first time, uncovering striking hotspots in north-west Ireland and the O…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-02-21 22:38 GMT+8（北京时间）
ScienceDaily “Celtic curse” hotspots found in Scotland and Ireland with 1 in 54 at risk Researchers have mapped the genetic risk of hemochromatosis across the UK and Ireland for the first time, uncovering striking hotspots in north-west Ireland and the Outer Hebrides. In some regions, around one in 60 people carry the high-risk gene variant…
Post #4047 36
不仅仅是运动和车祸：揭穿新西兰脑震荡伤害的五大谬误
脑震荡伤害（TBI）在新西兰每天都影响着110名普通人，事实上它比我们想象的要普遍得多。
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-21 21:30 GMT+8（北京时间）
#脑震荡伤害 #新西兰 #运动 #车祸
Medicalxpress Not just sport and car crashes: Debunking five myths about traumatic brain injury in NZ Touching the lives of an average 110 people each day in Aotearoa, traumatic brain injury (TBI) is much more common than any of us would like it to be.
Post #4046 51
生成式AI超越人类团队分析医疗数据速度
研究人员测试了生成式AI处理复杂医疗数据的能力，结果表明AI在某些情况下与人类专家团队相比，甚至超越了人类专家团队的建模预测能力。通过生成可用的分析代码，系统显著减少了处理健康数据所需的时间，研究结果暗示了AI在将数据转化为发现…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-02-21 19:17 GMT+8（北京时间）
#生成式AI #医疗数据 #人工智能 #预测模型
ScienceDaily Generative AI analyzes medical data faster than human research teams Researchers tested whether generative AI could handle complex medical datasets as well as human experts. In some cases, the AI matched or outperformed teams that had spent months building prediction models. By generating usable analytical code from precise…
Post #4045 34
科学家们揭示了为什么我们知道何时停止抓痒
当你抓痒时，脑部有一个内置的制动系统，告诉你何时停止抓痒。科学家们已经找到了这个制动系统的关键分子和神经机制，揭示了身体如何调节抓痒的机制，以及为什么这种调节会在慢性疾病中失控。
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-21 21:00 GMT+8（北京时间）
#抓痒 #神经机制 #慢性疾病
Medicalxpress Scientists discover why we know when to stop scratching an itch When you scratch an itch, something tells your brain when to stop. That moment of relief, when scratching feels "enough," is not accidental. Scientists have now identified a key molecular and neural mechanism ...
Post #4044 35
常见肺炎细菌可能促进阿尔茨海默病的发生
研究人员发现，导致肺炎和鼻窦感染的常见细菌Chlamydia pneumoniae可能在阿尔茨海默病的发生中扮演着重要角色。该细菌可以侵入视网膜和大脑，引发炎症、神经细胞死亡以及阿尔茨海默病的标志性蛋白质——β-淀粉样蛋白的积累。研究发现，患有…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-02-21 13:43 GMT+8（北京时间）
#阿尔茨海默病 #Chlamydiapneumoniae #β淀粉样蛋白 #APOE4基因
ScienceDaily Common pneumonia bacterium may fuel Alzheimer’s disease A common bacterium best known for causing pneumonia and sinus infections may also play a surprising role in Alzheimer’s disease. Researchers found that Chlamydia pneumoniae can invade the retina and brain, where it sparks inflammation, nerve cell death, and…
Post #4043 45
东帝汶研究：鱼类供应必须与公众意识相结合才能解决营养不良问题
东帝汶的营养不良问题严重，母婴健康差，五岁以下儿童中近半数因长期摄入营养价值低的食物，包括鱼类而出现生长迟缓。东帝汶的一项新研究发表在PLOS One杂志上，表明改善营养摄入的鱼类供应仅在与公众意识相结合时才有效
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-21 10:50 GMT+8（北京时间）
#东帝汶 #营养不良 #鱼类供应 #公众意识
Medicalxpress Study in Timor-Leste finds fish supply must be paired with public awareness to tackle malnutrition Malnutrition is a critical developmental obstacle in Timor-Leste, with poor maternal health and nearly half of its children under five suffering from stunting from diets that are chronically low in nutrient-rich ...
Post #4042 33
关于脂肪的窍门：如何通过饮食避免慢性疾病
本文是第一个在美国发布的更新的饮食指南的发布后举行的心脏月（每年2月举行）。新建议旨在代表当前的科学证据，关于如何通过饮食避免慢性疾病，包括心脏病。
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-21 07:10 GMT+8（北京时间）
#心脏月 #美国饮食指南 #慢性疾病 #心脏病
Medicalxpress The skinny on fat: 'How to eat to avoid chronic diseases' This is the first celebration of Heart Month (it comes every February) since the release of the updated dietary guidelines for Americans. The new recommendations are meant to represent the most current ...
Post #4041 27
揭露儿童心脏月：糖的真实威胁
研究表明，儿童过量摄入糖分可能导致心脏病、肥胖和2型糖尿病等一系列长期健康问题。
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-21 07:50 GMT+8（北京时间）
#糖 #儿童 #心脏病 #肥胖 #2型糖尿病
Medicalxpress Unmasking the real sugar threat to kids during heart month While most parents know to limit candy, the true danger of sugar in a child's diet is often hidden in plain sight. A growing body of research reveals that excessive sugar consumption in childhood is linked ...
Post #4040 28
太空中的生命化学可能源于寒冷的黑暗
科学家发现，在极端寒冷和辐射的深空中，蛋白质前体可以自然形成。研究人员发现，简单氨基酸在星际尘埃上形成肽，远早于星星和行星的诞生。这挑战了生命化学仅在行星上发生的想法，也增加了生命友好的成分在宇宙中普遍存在的可能性。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-01-21 22:18 GMT+8（北京时间）
#太空 #生命化学 #蛋白质前体 #星际尘埃
ScienceDaily Life’s chemistry may begin in the cold darkness of space New experiments reveal that protein precursors can form naturally in deep space under extreme cold and radiation. Scientists found that simple amino acids bond into peptides on interstellar dust, long before stars and planets exist. This challenges the idea…
Post #4039 21
燕麦粥降低胆固醇，可能防止糖尿病
燕麦粥不仅仅是简单的热量来源，研究表明它还能降低胆固醇水平并可能防止糖尿病。燕麦粥的健康益处远远超过了人们的想象，它不仅能给人带来温暖和能量，还能帮助降低胆固醇水平并防止糖尿病的发生。
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-21 05:50 GMT+8（北京时间）
#燕麦粥 #胆固醇 #糖尿病
Medicalxpress Oatmeal shown to lower cholesterol and potentially stall diabetes Whether plain with little more than a splash of milk or stirred through with any and all of yogurt, honey, berries and seeds, a bowl of porridge or oatmeal has been lauded as a source of warming goodness ...
Post #4038 26
游走鲨鱼打破了生殖规则
研究人员发现，耳点鲨鱼在生殖过程中没有显著增加的能量消耗，科学家们对其代谢、血液和激素水平进行了全过程跟踪，发现它们在整个生殖周期内保持了令人惊讶的稳定性。这一效率表明这些鲨鱼已经演化出一种优化能量的方式，尚未在其他物种中见…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-01-21 21:37 GMT+8（北京时间）
#耳点鲨鱼 #生殖 #能量效率
ScienceDaily Walking sharks break the rules of reproduction Epaulette sharks can reproduce without any measurable increase in energy use, stunning researchers who expected egg-laying to be costly. Scientists tracked metabolism, blood, and hormone levels through the entire reproductive cycle and found everything stayed…
Post #4037 31
有毒物质暴露会在20代后造成疾病风险，遗传性遗传研究指出
华盛顿州立大学的研究表明，孕妇暴露于一种有毒的杀菌剂后，会使后代20代中有病的风险增加，并且随着代际的传递，疾病的严重程度会越来越严重。这项研究扩大了我们对有毒物质暴露可能造成的代际影响的了解。该研究是由WSU生物学家迈克尔·斯…
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-21 02:00 GMT+8（北京时间）
#有毒物质 #疾病风险 #遗传性遗传 #代际影响 #华盛顿州立大学
Medicalxpress Toxic exposure creates disease risk over 20 generations, epigenetic inheritance study suggests A single exposure to a toxic fungicide during pregnancy can increase the risk of disease for 20 subsequent generations—with inherited health problems worsening many generations after exposure. Those ...
Post #4036 43
慢性肾脏疾病的严重程度与认知功能障碍的风险增加
研究表明，慢性肾脏疾病（CKD）患者的肾脏疾病严重程度与认知功能障碍的发生率增加有关，研究结果发表在JAMA Network Open上。
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-21 02:20 GMT+8（北京时间）
#慢性肾脏疾病 #认知功能障碍 #肾脏疾病严重程度
Medicalxpress Cognitive impairment risk increased with severity of chronic kidney disease For patients with chronic kidney disease (CKD), severity of CKD is associated with an increased incidence of cognitive impairment, according to a study published online Feb. 17 in JAMA Network Open.
Post #4035 42
通过预防减少心血管手术后的急性混乱
一项对近30年的约1604个研究的分析表明，混乱症在心脏病学中是一个临床上非常重要但科学上经常被忽视的并发症，预防可以减少混乱症的发病率达40%。本项研究由德国波恩大学医院（UKB）领导，已在欧洲心脏杂志上发表，提供了系统性的预防策略…
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-21 02:20 GMT+8（北京时间）
#混乱症 #心血管手术 #预防 #心脏病学
Medicalxpress Preventing acute confusion after cardiovascular procedures through prevention An analysis of approximately 1,604 studies from over three decades proves that delirium is a clinically highly relevant but scientifically often neglected complication in cardiology, and prevention can ...
Post #4034 31
星形胶质细胞在杏仁核中驱动恐惧记忆信号
长期以来，科学家认为星形胶质细胞的作用是照顾大脑，粘合神经元，维持神经回路。然而，一项新研究揭示了这些被认为是支持细胞的星形胶质细胞在恐惧记忆中起着与神经元同等重要的作用。
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-21 03:20 GMT+8（北京时间）
#星形胶质细胞 #恐惧记忆 #杏仁核
Medicalxpress Astrocytes, not just neurons, found to drive fear memory signals in the amygdala Picture a star-shaped cell in the brain, stretching its spindly arms out to cradle the neurons around it. That's an astrocyte, and for a long time, scientists thought its job was caretaking the brain, ...
Post #4033 28
神经系统疾病理解大进展：鼠脑髓鞘细胞新图谱出炉
约翰斯·霍普金斯科学家利用3D成像、特殊显微镜和人工智能程序，构建了鼠脑中超过10万个髓鞘细胞的精确位置图谱。这些细胞形成髓鞘，保护神经元轴突，促进电信号传递和脑健康。
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-21 03:40 GMT+8（北京时间）
#神经系统疾病 #髓鞘细胞 #神经元 #脑健康
Medicalxpress Stunning new maps of myelin-making mouse brain cells advance understanding of nervous system disorders Johns Hopkins scientists say they have used 3D imaging, special microscopes and artificial intelligence (AI) programs to construct new maps of mouse brains showing a precise location of more than 10 million ...
Post #4032 28
研究揭示了与致命移植并发症相关的特定遗传不符
研究人员发现，胎盘血液移植在血液癌症和其他严重血液疾病患者中具有转化性治疗选择，特别是当匹配捐献者不可用时。尽管胎盘血液被认为能够耐受遗传不符，但严重的免疫并发症仍然是长期存活的主要障碍。
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-21 02:22 GMT+8（北京时间）
#胎盘血液移植 #遗传不符 #移植并发症
Medicalxpress Study reveals a specific genetic mismatch linked to life-threatening transplant complications Umbilical cord blood transplantation has transformed the treatment options for patients with blood cancers and other life-threatening hematologic disorders, particularly when matched donors are unavailable. ...
Post #4031 28
Q&A：黑人历史学院的毕业生更少患有痴呆症？
研究表明，毕业于黑人历史学院（HBCU）的人群在几十年后表现出更好的认知能力。研究人员利用JAMA Network Open发表的研究结果，探讨了机构和社会条件如何影响认知衰退和阿尔茨海默病等痴呆症。研究人员认为，这是首个研究黑人成年人与黑人…
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-21 02:40 GMT+8（北京时间）
#黑人历史学院 #认知衰退 #阿尔茨海默病 #痴呆症 #老年人
Medicalxpress Q&A: How attending an HBCU can help reduce dementia risk Attending a historically Black college or university (HBCU) can be linked to better cognitive performance decades later among Black adults, according to a study coauthored by Min Hee Kim, an assistant ...
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