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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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Post #4130 35
科学家们终于揭开了马嘶的秘密
研究人员发现，当马嘶叫时，它们产生了两个完全不同的声音。一个是由声带振动产生的低音，类似人类歌唱；另一个是由喉咙内部产生的高音，前所未有的大型哺乳动物中首次确认。这一罕见的能力，称为双频发声，可能帮助马在单个呼叫中发送多个情绪…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-02-25 17:01 GMT+8（北京时间）
#马 #双频发声 #动物行为
ScienceDaily Scientists finally solve the mystery of the horse whinny Horses have a vocal trick no one fully understood until now. Scientists have discovered that when a horse whinnies, it produces two completely different sounds at the same time. One is a deep tone created by vibrating the vocal folds, similar to how humans…
Post #4129 35
高强度TMS疗法可能在5天内治疗抑郁症
一项来自UCLA的研究表明，高强度的TMS疗法每天进行5次，持续5天，可以与传统的6周疗程产生类似的效果，甚至更有效。研究发现，接受这种疗法的患者在短期内体验到了明显的症状缓解，部分患者在几周后也表现出显著的改善。这种发现可能指向一种…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-02-25 18:08 GMT+8（北京时间）
#TMS #抑郁症 #康复 #脑刺激疗法
ScienceDaily New brain stimulation approach could treat depression in just 5 days A weeklong, high-intensity version of TMS may work nearly as well as the standard six-week treatment for depression. In a UCLA study, patients who received five sessions a day for five days experienced meaningful symptom relief comparable to those on the…
Post #4128 32
超级长寿者的脑部有一个‘韧性特征’，这与神经元生长有关
研究人员发现，八旬以上的超级长寿者脑部神经元生长速度快于同龄人，而患有阿尔茨海默病的老年人脑部几乎没有神经元生长。
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-26 00:00 GMT+8（北京时间）
#神经元 #生长 #老年 #脑部 #韧性特征
Medical Xpress Superagers' brains have a 'resilience signature,' and it's all about neuron growth Brains of older adults with super-healthy cognition grow more new neurons than those of their peers, according to a study from UIC, Northwestern University and the University of Washington. Researchers ...
Post #4127 31
女性在阿尔茨海默病中比男性更积累tau蛋白和认知下降速度更快
研究发现，女性在阿尔茨海默病中比男性更积累tau蛋白，认知下降速度更快，研究结果发表在JAMA Neurology杂志上。tau蛋白在脑细胞中起维持结构和功能的作用，阿尔茨海默病时tau蛋白形成的纠结会干扰正常细胞功能。
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-26 02:50 GMT+8（北京时间）
#阿尔茨海默病 #tau蛋白 #认知下降
Medical Xpress Women show greater tau buildup and faster cognitive decline than men in Alzheimer's Tau proteins act like the brain's maintenance crew, helping maintain the structure and proper function of brain cells. In neurodegenerative diseases such as Alzheimer's, the tau proteins can form tangles ...
Post #4126 27
神经外科医生在去除脑瘤方面非常擅长——他们即将变得更加出色
在脑部切除癌症组织时，神经外科医生常常使用“清醒脑图”来降低对患者生活质量的不良影响，同时尽可能去除肿瘤。这种实践已被使用了几十年，涉及在手术中将患者唤醒，以实时测试他们的神经认知功能，通过刺激脑表面并评估功能变化。
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-26 03:00 GMT+8（北京时间）
#脑瘤 #清醒脑图 #神经外科
Medicalxpress Neurosurgeons are really good at removing brain tumors—they're about to get even better When removing cancerous tissue in the brain, neurosurgeons often use "awake brain mapping" to minimize the risk of causing unintended disruptions to a patient's quality of life while removing as much ...
Post #4125 33
科学家们精确地绘制基因图谱，以便找出影响人类健康特征和疾病风险的DNA变化
科学家们找到了特定基因变化在细胞中如何发挥作用，影响疾病风险和其他人类健康特征。通过探索与疾病相关的DNA区域，研究人员绘制了高分辨率的DNA变异活跃图谱，帮助确定影响血压、胆固醇水平、血糖水平和其他复杂人类特征的确切变化。
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-26 00:00 GMT+8（北京时间）
#DNA #基因 #健康特征 #疾病风险
Medicalxpress Scientists sharpen genetic maps to help pinpoint DNA changes that influence human health traits and disease risk Scientists have identified how specific genetic changes function in cells to influence disease risk and other human health traits. By probing regions of DNA previously linked to disease, the work has ...
Post #4124 35
发现“大脑火灾”疾病的新靶点
科学家们找到了“大脑火灾”罕见但致命的自體免疫疾病的关键弱点，该疾病发生时，免疫系统攻击记忆和思维中的关键分子NMDA受体，导致精神症状、癫痫甚至死亡。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-02-26 00:08 GMT+8（北京时间）
#大脑火灾 #自體免疫疾病 #NMDA受体
ScienceDaily New drug target discovered for devastating “brain on fire” disease Scientists have zeroed in on a critical weak spot behind a rare but devastating brain autoimmune disorder often known as “Brain on Fire.” The disease strikes when the immune system attacks NMDA receptors—key molecules involved in memory and thinking—leading…
Post #4123 41
两天的燕麦减少胆固醇10%
研究人员发现，仅仅两天的燕麦饮食可以显著降低胆固醇，且六周后仍然有明显效果。参与研究的有代谢综合征的人群，通过摄入高纤维燕麦，胆固醇降低10%，同时伴有体重减轻和血压下降。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-02-26 00:37 GMT+8（北京时间）
#燕麦 #胆固醇 #代谢综合征
ScienceDaily Just two days of oatmeal cut bad cholesterol by 10% Eating nothing but oatmeal for just two days might sound extreme, but it delivered a striking payoff in a new clinical trial. People with metabolic syndrome who followed a short, calorie-reduced oat-based plan saw their harmful LDL cholesterol drop by 10%…
Post #4122 54
失落的化石揭示了地球最严重灭绝事件后的海洋巨兽
澳大利亚250万年前的化石发现重写了地球最严重灭绝事件后的生命史。研究人员发现了早期海洋掠食者的多样化群落。其中一只生物的亲属遍布从北极到马达加斯加，表明早期海栖四足类生物在全球范围内迅速扩散。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-02-25 18:20 GMT+8（北京时间）
#化石 #灭绝事件 #海洋巨兽 #早期海栖四足类生物
ScienceDaily Lost fossils reveal sea monsters that took over after Earth’s greatest extinction A lost cache of 250-million-year-old fossils from Australia has rewritten part of the story of life after Earth’s worst mass extinction. Instead of a single marine amphibian species, researchers uncovered evidence of a surprisingly diverse community of early…
Post #4121 62
NASA研究：火星冰盖可能保存古老生命50万年
研究表明，火星冰盖可能是古老生命的时间胶囊。实验结果显示，蛋白质的基本构建块在纯净冰中可以存活数十万年，甚至在无情的宇宙辐射下也不例外。然而，混合火星样地壳的冰则会迅速破坏有机物质。研究结果指向未来任务：在清洁的埋藏冰中钻孔，…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-02-25 22:13 GMT+8（北京时间）
#火星 #生命 #冰盖 #NASA #实验研究
ScienceDaily NASA study finds ancient life could survive 50 million years in Martian ice Mars’ frozen ice caps may be time capsules for ancient life. Lab experiments show that key building blocks of proteins can survive tens of millions of years in pure ice, even under relentless cosmic radiation. Ice mixed with Martian-like soil, however, destroys…
Post #4120 60
Doomscrolling affecting many Americans' sleep, poll finds
Doomscrolling is taking a toll on many Americans' rest, a new survey says. More than a third of U.S. adults (38%) say using their phone or tablet to read the new…
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-25 23:40 GMT+8（北京时间）
Medicalxpress Doomscrolling affecting many Americans' sleep, poll finds Doomscrolling is taking a toll on many Americans' rest, a new survey says. More than a third of U.S. adults (38%) say using their phone or tablet to read the news before bed is making their sleep slightly ...
Post #4119 56
肥胖羞辱不会改善人类健康，反而会损害它，研究人员发现
研究表明，青少年期是身体、情感和社会变化迅速的时期，对于许多年轻人来说，这个阶段还受到身体形象问题和体重歧视的影响。这些经历，研究人员说，可以驱动慢性应激，导致长期健康后果。印第安纳大学的研究揭示了如何让体重相关的歧视在个体中…
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-25 21:50 GMT+8（北京时间）
#肥胖 #羞辱 #健康 #应激 #代谢负荷
Medicalxpress Fat shaming doesn't improve human health, it harms it, researchers find Adolescence is a period defined by rapid physical, emotional, and social change, and for many young people, it is also shaped by body image issues and weight stigma. Those experiences, researchers say, ...
Post #4118 40
阿尔茨海默病可能会欺骗大脑抹去自己的记忆
阿尔茨海默病可能通过触发神经元断开自己的连接的分子 switch 来摧毁记忆。研究人员发现，β-氨基酸和炎症反应都集中在同一个受体上，触发了突触丢失。令人惊讶的是，神经元并不是被动的受害者——它们会主动对这些信号做出反应。针对这个受体…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-01-26 16:08 GMT+8（北京时间）
#阿尔茨海默病 #记忆丢失 #神经元 #受体
ScienceDaily Alzheimer’s may trick the brain into erasing its own memories Alzheimer’s may destroy memory by flipping a single molecular switch that tells neurons to prune their own connections. Researchers found that both amyloid beta and inflammation converge on the same receptor, triggering synapse loss. Surprisingly, neurons…
Post #4117 36
高血糖人群，卡路里饮食可能恢复运动的益处
研究表明，限制卡路里摄入并遵循低碳水化合物饮食可能有助于恢复运动时血糖水平的正常状态，从而恢复运动的益处。
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-25 18:00 GMT+8（北京时间）
#卡路里饮食 #低碳水化合物饮食 #高血糖
Medicalxpress Keto diet may restore exercise benefits in people with high blood sugar To be healthy, conventional wisdom tells us to exercise and limit fatty foods. Exercise helps us lose weight and build muscle. It makes our hearts stronger and boosts how we take in and use oxygen for ...
Post #4116 31
COVID-19与流感的长期脑部影响：研究揭示关键差异
新近的塔尔萨大学研究表明，即使是轻微的COVID-19或流感感染也可能在发热和咳嗽消失后持续影响身体，可能导致人们在数周或数月后仍然无法完全恢复。研究人员发现，两种病毒都可能导致肺部损伤，但只有SARS-CoV-2感染会导致持续的脑炎症和…
来源: Medical Xpress ｜ 阅读全文
发布时间: 2026-02-25 13:00 GMT+8（北京时间）
#COVID19 #流感 #脑炎症 #小血管损伤
Medicalxpress Long-term brain effects of COVID-19 vs. flu: Study reveals key differences Even a mild case of COVID-19 or the flu can impact the body long after the fever and cough fade, according to new Tulane University research that may help explain why some people struggle to feel fully ...
Post #4115 28
研究人员将 AI 与 10 万人进行了创造力测试
一项涵盖超过 10 万人与当今最先进 AI 系统的新研究揭示了一个令人惊讶的结果：生成式 AI 可以在某些创造力测试中击败平均人类表现。GPT-4 等模型在测量原创性思维和想法生成的任务中表现出强大的性能，有时甚至超过了典型人类的反应。…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-01-25 22:50 GMT+8（北京时间）
#AI #创造力 #人工智能 #GPT4
ScienceDaily Researchers tested AI against 100,000 humans on creativity A massive new study comparing more than 100,000 people with today’s most advanced AI systems delivers a surprising result: generative AI can now beat the average human on certain creativity tests. Models like GPT-4 showed strong performance on tasks designed…
Post #4114 28
世卫组织关于美国退出世卫组织的声明
世卫组织对美国退出世卫组织的决定表示遗憾，认为这使得美国和世界都变得更不安全。美国退出世卫组织的通知将在2月2日开始的世卫组织执行委员会会议和2026年5月的世界卫生大会上进行考虑。
来源: WHO ｜ 阅读全文
发布时间: 2026-01-25 04:09 GMT+8（北京时间）
#世卫组织 #美国 #退出 #安全
World Health Organization WHO statement on notification of withdrawal of the United States WHO regrets the United States’ notification of withdrawal from WHO – a decision that makes both the United States and the world less safe. The notification of withdrawal raises issues that will be considered by the WHO Executive Board at its regular meeting…
Post #4113 31
A natural aging molecule may help restore memory in Alzheimer’s
Researchers have found that a natural aging-related molecule can repair key memory processes affected by Alzheimer’s disease. The compound improves communication betw…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-01-25 15:17 GMT+8（北京时间）
ScienceDaily A natural aging molecule may help restore memory in Alzheimer’s Researchers have found that a natural aging-related molecule can repair key memory processes affected by Alzheimer’s disease. The compound improves communication between brain cells and restores early memory abilities that typically fade first. Because it…
Post #4112 24
四十年森林数据揭示亚马逊森林的变化
研究人员分析了安第斯山脉和亚马逊地区40年的树木记录，发现气候变化正在以不均匀的方式重塑热带森林。某些地区持续失去树种，尤其是在炎热干燥的地区，而其他地区则出现了增多。降雨模式的变化与升高的温度一样重要。
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-01-25 21:27 GMT+8（北京时间）
#气候变化 #热带森林 #树种多样性
ScienceDaily Forty years of forest data reveal a changing Amazon After analyzing 40 years of tree records across the Andes and Amazon, researchers found that climate change is reshaping tropical forests in uneven ways. Some regions are steadily losing tree species, especially where conditions are hotter and drier, while…
Post #4111 26
Stenotrophomonas maltophilia血液感染爆发在加利福尼亚州一所急诊医院，2022-2023
本研究报告了一起Stenotrophomonas maltophilia血液感染爆发的发生，影响了加利福尼亚州一所急诊医院的患者。研究人员通过采样和分型分析了相关病例，找到了该细菌的传播途径和感染源。该研究结果表明，医院内的Stenotrophomonas m…
来源: CDC ｜ 阅读全文
发布时间: 2026-02-07 03:52 GMT+8（北京时间）
#Stenotrophomonasmaltophilia #医院感染 #血液感染 #医院环境污染
Emerging Infectious Diseases journal <em>Stenotrophomonas maltophilia</em> Bloodstream Infection Outbreak in Acute Care Hospital, California, USA, 2022–2023 <em>S. maltophilia</em> Bloodstream Infection Outbreak
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