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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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Post #4430 49
细胞可以感知10倍远的距离,这可能解释癌症传播的原因
科学家们发现细胞可以感知远远超过它们接触的表面。单个癌细胞可以通过拉扯周围的胶原纤维探测约10微米的距离,正常的表皮细胞群体可以通过结合力量探测100微米的距离。这一远距离“深度感知”有助于细胞决定迁移的方向。了解其工作原理可能…
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-16 13:51 GMT+8(北京时间)
#细胞 #癌症 #深度感知
ScienceDaily Cells can sense 10x farther than expected and it may explain cancer spread Scientists have discovered that cells can sense far beyond the surfaces they touch. While individual cancer cells can probe about 10 microns ahead by tugging on surrounding collagen fibers, clusters of normal epithelial cells can combine forces to detect…
Post #4429 92
数百万儿童服用美拉通,但医生们却在发出警告信号
美拉通已被广泛用于帮助儿童入睡,但科学家表示,人们对美拉通的热情可能已经超出了证据。科学家们发现美拉通对患有自闭症和ADHD的儿童有明显的益处,但对于典型的儿童失眠情况的数据却少得多。研究人员还警告称,补充剂剂量标签不准确以及年…
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-15 19:08 GMT+8(北京时间)
#美拉通 #儿童睡眠 #自闭症 #ADHD
ScienceDaily Millions of kids take melatonin but doctors are raising red flags Melatonin is now widely used to help children sleep, but scientists say the enthusiasm may be getting ahead of the evidence. A major review found clear benefits for children with conditions like autism and ADHD, yet far less data exists for typical childhood…
Post #4428 88
通过严重急性呼吸道感染监测检测柬埔寨的流感A(H5N1)病毒
本研究通过严重急性呼吸道感染监测系统在柬埔寨发现了流感A(H5N1)病毒的存在,揭示了该病毒在该地区的流行情况,具有重要的公共卫生意义。
来源: CDC | 阅读全文
发布时间: 2026-02-05 13:00 GMT+8(北京时间)
#流感AH5N1严重急性呼吸道感染监测柬埔寨
Emerging Infectious Diseases journal Detecting Influenza A(H5N1) Viruses through Severe Acute Respiratory Infection Surveillance, Cambodia
Post #4427 91
父亲吸烟与子女代谢变化的联系
研究表明,父亲吸烟可能会影响子女的代谢健康。研究人员发现,当男性老鼠摄入尼古丁时,其后代的身体处理糖的方式会发生变化,包括胰岛素和葡萄糖水平的差异和肝脏功能的改变。这些变化可能与糖尿病和相关代谢疾病的风险增加有关。
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-15 13:42 GMT+8(北京时间)
#父亲 #吸烟 #代谢健康 #糖尿病
ScienceDaily Fathers’ tobacco use linked to metabolic changes in their children A new study in mice suggests that a father’s nicotine exposure could influence the metabolic health of his children. Researchers found that when male mice consumed nicotine, their offspring showed changes in how their bodies handled sugar, including differences…
Post #4426 68
使用污水灌溉的作物中含有药物的叶子
科学家们研究使用处理过的污水灌溉作物时发现,药物残留在植物叶片中。实验中,西红柿、胡萝卜和生菜吸收了抗抑郁药和癫痫药等药物。然而,西红柿和胡萝卜的可食用部分含有比叶片低得多的药物残留量。这些发现有助于研究人员了解作物如何处理…
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-15 14:28 GMT+8(北京时间)
#污水 #药物 #作物 #污染物
ScienceDaily Crops irrigated with wastewater store drugs in their leaves Scientists studying crops irrigated with treated wastewater discovered that trace pharmaceuticals often collect in plant leaves. Tomatoes, carrots, and lettuce absorbed medications such as antidepressants and seizure drugs during the experiment. However,…
Post #4425 59
金融危机悄悄扼杀一代人成长
研究人员发现,亚洲金融危机导致印度尼西亚rice价格大幅上涨时,家庭预算受到冲击,孩子们的生长受到影响,甚至几年后更容易肥胖。研究表明,在危机时期,家庭通常维持能量摄入量,但削减营养丰富的食物,导致潜在营养缺乏,破坏健康发育。
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-15 16:53 GMT+8(北京时间)
#金融危机 #营养缺乏 #儿童发育
ScienceDaily The financial crisis that quietly stunted a generation When the Asian financial crisis sent rice prices soaring in Indonesia in the late 1990s, the shock didn’t just strain household budgets—it left lasting marks on children’s bodies. Researchers from the University of Bonn found that kids exposed to the food…
Post #4424 117
科学家测试维生素D对COVID-19的效果,发现了一条意外的长期COVID线索
马萨诸塞州总医院的研究人员发现,高剂量维生素D3并不能减轻COVID-19的严重程度或减少就医率,但研究发现,长期服用维生素D补充剂的人可能会比其他人更不容易出现长期COVID症状。
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-15 17:54 GMT+8(北京时间)
#维生素D #COVID19 #长期COVID
ScienceDaily Scientists tested vitamin D for COVID and found an unexpected long COVID clue A major clinical trial has delivered an unexpected twist in the search for ways to fight COVID-19 and its lingering effects. Researchers at Mass General Brigham found that taking high doses of vitamin D3 did not make COVID-19 infections less severe or reduce…
Post #4423 74
环形蛋白质分解为两半,启动细菌细胞分裂
研究人员揭示了细菌如何精确控制启动细胞分裂的基因。研究表明,通常形成环形结构的MraZ蛋白质必须弯曲并部分分解以结合激活细胞分裂基因的关键DNA序列。通过冷冻电子显微镜,科学家以出色的细节捕捉到了这种相互作用。这种机制似乎在细菌…
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-15 11:36 GMT+8(北京时间)
#MraZ蛋白 #细菌细胞分裂 #DNA序列 #冷冻电子显微镜
ScienceDaily A donut-shaped protein breaks apart to start bacterial cell division Researchers have revealed how bacteria precisely control the genes that trigger cell division. The study shows that the MraZ protein, which normally forms a donut-shaped structure, must bend and partially break apart to bind key DNA sequences that activate…
Post #4422 75
深海蛋白质的秘密:超级检测工具的诞生
科学家在火山湖和深海热泉中发现了耐受极端条件的新DNA结合蛋白质。通过扫描巨大的基因数据库,研究人员找到了能够在高温、盐和严酷化学条件下保持稳定的分子。其中一种蛋白质显著提高了快速LAMP诊断测试的速度和敏感性。这种发现可能有助…
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-15 11:50 GMT+8(北京时间)
#深海蛋白质 #DNA结合蛋白质 #LAMP诊断测试
ScienceDaily Hidden deep-sea proteins could supercharge disease tests Hidden in volcanic lakes and deep-sea vents, scientists have discovered tough new DNA-binding proteins built to survive extreme conditions. After scanning huge genetic databases, researchers found molecules that remain stable under heat, salt, and harsh chemistry.…
Post #4421 66
ALS蛋白与DNA修复有关的癌症和痴呆研究
科学家们发现ALS蛋白TDP43控制了DNA修复的关键过程,但当该蛋白失衡时,修复系统可能会失控,损害神经元并破坏DNA。研究人员还发现,TDP43水平升高与癌症突变率增加有关。该发现将TDP43置于神经退行性疾病和癌症生物学的核心。
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-15 12:05 GMT+8(北京时间)
#ALS #TDP43 #DNA修复 #癌症 #痴呆
ScienceDaily Scientists discover ALS protein that links DNA repair to cancer and dementia A protein tied to ALS and dementia may have a much bigger role in disease than scientists realized. Researchers found that TDP43 controls a key DNA repair process, but when the protein becomes imbalanced, the repair system can spiral out of control, harming…
Post #4420 84
害怕蜘蛛?科学家说真正的噩梦是失去它们
蜘蛛和昆虫虽然不受欢迎,但它们对于生态系统的健康至关重要——然而科学家们对它们的状况几乎一无所知。研究人员发现,北美地区近90%的昆虫和蛛类物种没有保护状态,留下了它们的命运几乎完全未知。更令人震惊的是,大多数州都没有保护任何蛛…
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-15 08:37 GMT+8(北京时间)
#蜘蛛 #昆虫 #生态系统 #保护
ScienceDaily Scared of spiders? Scientists say the real nightmare is losing them Spiders and insects may not be fan favorites, but they are vital to the health of ecosystems—and scientists barely know how they’re doing. Researchers found that nearly 90% of North America’s insect and arachnid species have no conservation status, leaving…
Post #4419 88
人们真的会大便多少次?科学家们制造了智能内衣来找出答案
科学家们开发了“智能内衣”,这是一个可穿戴设备,通过检测肠道微生物产生的氢气来测量气体。早期测试表明人们每天可能会排气大约32次—远远高于之前的估计。该设备为科学家提供了一个新的方法来在日常生活中跟踪肠道微生物的活动。它将为全国…
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-15 06:36 GMT+8(北京时间)
#智能内衣 #肠道微生物 #气体产生 #人类气体地图
ScienceDaily How often do people really fart? Scientists built smart underwear to find out Researchers have created “Smart Underwear,” a wearable device that measures flatulence by detecting hydrogen produced by gut microbes. Early tests suggest people may pass gas about 32 times a day—much higher than previous estimates. The device gives scientists…
Post #4418 79
教科书上的错误:科学家揭露人类头发真正的生长方式
科学家发现,头发的生长方式可能与人们想象的不一样。新研究表明,头发不是从根部被推出,而是头发 follicle 内部的细胞运动,像微观级别的电动机一样将头发拉向上方。通过高级 3D 成像技术,科学家发现了细胞的螺旋运动,这种运动产生了这…
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-14 20:15 GMT+8(北京时间)
#头发 #生长 #细胞 #运动 #3D成像
ScienceDaily Textbooks were wrong: Scientists reveal the surprising way human hair really grows Hair may grow in a completely different way than scientists once believed. Instead of being pushed out from the root, new research shows that moving cells inside the follicle actually pull the hair upward like a microscopic motor. Advanced 3D imaging revealed…
Post #4417 64
科学家发现植物中4000万年前的遗传开关
科学家们通过比较数百种植物基因组,发现了超过2300万个调控DNA序列,这些序列被称为保守非编码序列(CNSs),可以控制基因的激活时间和方式。这些序列使用一个名为Conservatory的新计算工具被检测到。
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-14 13:42 GMT+8(北京时间)
#遗传学 #植物 #DNA #基因组 #Conservatory
ScienceDaily Scientists discover ancient DNA “switches” hidden in plants for 400 million years Scientists have uncovered an enormous hidden archive of plant DNA that has endured for more than 400 million years. By comparing hundreds of plant genomes, researchers identified more than 2.3 million regulatory DNA sequences that act like genetic switches…
Post #4416 82
剑桥实验室的一次错误实验揭示了修改药物分子新方法
剑桥科学家们在药物开发的最后阶段发现了一种利用光能的化学反应,能够修改复杂的药物分子。与传统方法相比,这种方法不需要有毒化学物质和恶劣环境条件,只需使用LED灯就能在温和条件下形成碳-碳键。这一突破可能会使药物发现更快、更环保。…
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-14 13:56 GMT+8(北京时间)
#药物 #光化学反应 #新方法
ScienceDaily A lab mistake at Cambridge reveals a powerful new way to modify drug molecules Cambridge scientists have discovered a light-powered chemical reaction that lets researchers modify complex drug molecules at the final stages of development. Unlike traditional methods that rely on toxic chemicals and harsh conditions, the new approach uses…
Post #4415 89
澳大利亚的‘僵尸树’可能在一代人中灭绝
科学家们发现了一种澳大利亚的树木,称之为‘僵尸树’,因为它活着但无法繁殖。墨丘林锈病反复杀死其幼苗,阻止了该物种开花或产生种子。科学家们正在努力在受保护的地点培育无病毒的幼苗。他们的希望是,未来的一代可能会进化出抵抗力,挽救该物…
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-14 09:53 GMT+8(北京时间)
#僵尸树 #墨丘林锈病 #种子 #澳大利亚
ScienceDaily Scientists warn Australia’s “zombie tree” could vanish within a generation A newly identified Australian tree has been dubbed the “zombie” tree because it’s alive but unable to reproduce. Myrtle rust repeatedly kills its young growth, stopping the species from flowering or making seeds. Scientists are scrambling to grow disease…
Post #4414 183
肠道细菌产生血清素可能是IBS的关键
研究人员发现了两种肠道细菌可以产生血清素,这种化学物质调节肠蠕动。实验中,缺乏血清素的老鼠通过细菌的帮助,血清素水平上升,肠道神经细胞增加,肠蠕动正常化。研究还发现,患有IBS的人体内有一种细菌的水平较低。这种发现表明肠道微生物…
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-14 11:28 GMT+8(北京时间)
#肠道细菌 #血清素 #IBS
ScienceDaily Gut bacteria that make serotonin may hold the key to IBS Researchers have identified two gut bacteria that can produce serotonin, a key chemical that regulates bowel movements. In experiments with mice lacking serotonin, the microbes boosted serotonin levels, increased nerve cells in the colon, and normalized intestinal…
Post #4413 214
微塑料可能正在悄悄损害你的大脑并加剧阿尔茨海默病和帕金森病
研究表明微塑料——目前已广泛存在于食物、水和家庭尘埃中——可能通过多条生物学途径触发炎症和大脑损伤。科学家估计成人每年可能摄入约250克微塑料,某些微塑料可以在器官中积累,包括大脑。
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-14 08:38 GMT+8(北京时间)
#微塑料 #阿尔茨海默病 #帕金森病
ScienceDaily Microplastics may be quietly damaging your brain and fueling Alzheimer’s and Parkinson’s Tiny plastic particles may be quietly threatening brain health. New research suggests microplastics—now widely found in food, water, and even household dust—could trigger inflammation and damage in the brain through multiple biological pathways. Scientists…
Post #4412 86
预防性霍乱疫苗供应达到批量,全球疫苗接种再度启动
在全球疫苗供应达到批量的关键里程碑之后,三年的间隔后首次预防性霍乱疫苗接种计划在莫桑比克启动,其他计划将在孟加拉国和刚果民主共和国推出。
来源: WHO | 阅读全文
发布时间: 2026-02-04 22:20 GMT+8(北京时间)
#霍乱疫苗 #疫苗接种 #预防性接种
Post #4411 81
开发AI工具预测伴侣暴力受害者
研究人员开发了一种AI工具,能够自动识别高风险的伴侣暴力患者,提前进行干预,帮助患者避免受伤。
来源: NIH | 阅读全文
#伴侣暴力 #AI #预测 #干预
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