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Post #4230 42
科学家揭示为抗衰老成分也可能促进癌症的原因
多胺是一种存在于每个活细胞中的天然分子,已被认为对延缓细胞清理和促进健康衰老有益。然而,研究发现,这些分子的高水平也与癌症有关,肿瘤会迅速生长。
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-02 19:13 GMT+8(北京时间)
#多胺 #抗衰老 #癌症
ScienceDaily Scientists reveal why a popular anti-aging compound may also fuel cancer Polyamines—natural molecules found in every living cell—have become stars in the longevity world for their ability to boost cellular cleanup and support healthy aging. But there’s a dark twist: high levels of these same molecules are consistently seen in…
Post #4229 56
斋戒月的科学
斋戒月是穆斯林世界各地的许多人从清晨到黄昏禁食,放弃食物、饮料和其他身体需求,以虔诚和自律的方式。
来源: Medical Xpress | 阅读全文
发布时间: 2026-03-02 04:00 GMT+8(北京时间)
#斋戒月 #伊斯兰教 #禁食
Medicalxpress The science of Ramadan fasting The month of Ramadan, which began last week, is when many Muslims around the world fast from dawn to sunset, refraining from food, drink, and other physical needs as an act of worship and self-discipline.
Post #4228 71
新型铁纳米材料杀灭癌细胞不伤害健康组织
俄勒冈州立大学科学家们研发了一种新型铁纳米材料,能够专门攻击癌细胞并从内部破坏它们。该材料利用癌细胞的独特化学性质——酸性和高氢过氧化物水平——引发两种强烈的化学反应,向肿瘤中注入有害氧化物分子。这种双重攻击让癌细胞在氧化应激…
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-01 22:09 GMT+8(北京时间)
#铁纳米材料 #癌细胞 #氧化应激
ScienceDaily New iron nanomaterial wipes out cancer cells without harming healthy tissue Scientists at Oregon State University have engineered a powerful new nanomaterial that zeroes in on cancer cells and destroys them from the inside out. Designed to exploit cancer’s unique chemistry—its acidity and high hydrogen peroxide levels—the tiny iron…
Post #4227 75
珍珠奶茶有害吗?新研究提醒注意事项
珍珠奶茶中用来制作珍珠的木薯淀粉可能会吸收重金属,如铅,且大量摄入可能会导致消化不良甚至阻塞。珍珠奶茶中常常含有大量糖分,甚至高于汽水,增加了蛀牙、肥胖、糖尿病和脂肪肝病的风险。研究还发现,频繁饮用珍珠奶茶可能与肾结石和心理健…
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-01 22:45 GMT+8(北京时间)
#珍珠奶茶 #木薯淀粉 #重金属 #消化不良 #阻塞
ScienceDaily Is bubble tea bad for you? New research raises red flags That photogenic cup of bubble tea may come with hidden downsides. Tapioca pearls made from cassava can absorb heavy metals like lead, and in large amounts they may slow digestion or even cause blockages. The drink is often loaded with sugar—sometimes more…
Post #4226 84
超越阿尔茨海默病斑块:AI揭示大脑中隐藏的化学变化
里士满大学的科学家们首次制作了阿尔茨海默病大脑的全面的无染料分子地图。通过结合激光成像和机器学习,他们发现化学变化在大脑中不均匀地扩散,并超出了阿尔茨海默病斑块。关键的记忆区域显示出胆固醇和与能量相关的分子的大幅波动。研究结…
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-01 23:16 GMT+8(北京时间)
#阿尔茨海默病 #大脑 #化学变化 #机器学习 #激光成像
ScienceDaily Beyond amyloid plaques: AI reveals hidden chemical changes across the Alzheimer’s brain Scientists at Rice University have produced the first full, dye-free molecular atlas of an Alzheimer’s brain. By combining laser-based imaging with machine learning, they uncovered chemical changes that spread unevenly across the brain and extend beyond amyloid…
Post #4225 91
科学家们刚刚创造出了带有惊人健康益处的巧克力蜂蜜
巴西科学家们将可可废料转化为富含抗氧化剂和天然刺激剂的巧克力蜂蜜。他们使用超声波波使蜂蜜能够从可可壳中提取有益物质——无需使用合成溶剂。这种过程被认为是绿色的和可持续的,该产品可能会进入高级食品和化妆品中。
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-02 00:04 GMT+8(北京时间)
#巧克力蜂蜜 #可可废料 #抗氧化剂 #天然刺激剂
ScienceDaily Scientists just created chocolate honey packed with surprising health perks Scientists in Brazil have transformed cocoa waste into a functional chocolate-infused honey packed with antioxidants and natural stimulants. Using ultrasound waves, they enhanced honey’s ability to pull beneficial compounds from cocoa shells—no synthetic…
Post #4224 91
UK study links higher social deprivation to less diverse gut bacteria
Living in a poorer neighborhood in the UK could impact the makeup of your gut microbiome, potentially leading to worse health. New research, led by King's Colleg…
来源: Medical Xpress | 阅读全文
发布时间: 2026-03-02 00:30 GMT+8(北京时间)
Medicalxpress UK study links higher social deprivation to less diverse gut bacteria Living in a poorer neighborhood in the UK could impact the makeup of your gut microbiome, potentially leading to worse health. New research, led by King's College London and the University of Nottingham, ...
Post #4223 78
英国研究:居住在贫困社区的人群肠道细菌多样性较低
英国研究指出,居住在贫困社区的人群肠道细菌多样性较低,可能导致健康状况恶化。研究团队发现,居住在社会不平等较高的地区的人群肠道细菌种类较少。
来源: Medical Xpress | 阅读全文
发布时间: 2026-03-02 00:30 GMT+8(北京时间)
#肠道细菌 #社会不平等 #健康状况
Medicalxpress UK study links higher social deprivation to less diverse gut bacteria Living in a poorer neighborhood in the UK could impact the makeup of your gut microbiome, potentially leading to worse health. New research, led by King's College London and the University of Nottingham, ...
Post #4222 52
木星的卫星可能以生命的成分而诞生
科学家通过模拟研究发现,木星的冰卫星可能在形成时就带有生命的化学成分。他们的研究表明,约有半数组成木星冰卫星的冰质物质可能携带了新鲜的有机化合物,而这些化合物在形成过程中未被破坏。
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-01 20:06 GMT+8(北京时间)
#木星 #冰卫星 #生命的成分 #有机化合物
ScienceDaily Jupiter’s moons may have formed with the ingredients for life Jupiter’s icy moons may have been seeded with the chemical ingredients for life from the very beginning. An international team of scientists modeled how complex organic molecules—essential building blocks for biology—could have formed in the swirling disk…
Post #4221 44
失眠和睡眠呼吸暂停合并症会显著增加心脏病风险
研究表明,失眠和睡眠呼吸暂停同时存在会显著增加高血压和心脏病的风险,两种情况不仅仅是共存,还会相互作用,进一步加重心脏负担,早期解决睡眠问题可能有助于预防心血管疾病的发生。
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-01 17:07 GMT+8(北京时间)
#失眠 #睡眠呼吸暂停 #心脏病 #高血压
ScienceDaily Insomnia and sleep apnea together dramatically raise heart disease risk Struggling to fall asleep and stopping breathing at night may be a far riskier combo than previously thought. In a study of nearly a million veterans, researchers found that having both insomnia and sleep apnea dramatically raises the risk of hypertension…
Post #4220 46
奥塞米特和韦格维的药片中隐藏的成分引发新问题
科学家正在研究韦格维和奥塞米特的药片。动物实验表明,助长塞马格鲁蒂德在胃中存活并进入血液的成分SNAC与肠道细菌变化、炎症标志物和脑相关蛋白有关。研究未显示出对人类的伤害,但引发了长期暴露的新问题。
来源: ScienceDaily | 阅读全文
发布时间: 2026-03-01 15:34 GMT+8(北京时间)
#奥塞米特 #韦格维 #SNAC #肠道健康
ScienceDaily Hidden ingredient in Ozempic and Wegovy tablets raises new gut health questions Scientists are taking a closer look at the pill forms of Wegovy and Ozempic. In an animal study, the ingredient SNAC, which helps semaglutide survive the stomach and enter the bloodstream, was associated with changes in gut bacteria, inflammation markers…
Post #4219 52
为什么长期COVID症状中的脑雾症状在美国似乎更严重?
一项涵盖3,100多名长期COVID患者的国际研究揭示了脑相关症状报告的显著差异。美国非住院患者中,绝大多数人描述了脑雾、抑郁和焦虑,而印度和尼日利亚等国家的患者则报告的症状要少得多。这种差异似乎不仅仅是病毒本身的问题,而是文化、社…
来源: ScienceDaily | 阅读全文
发布时间: 2026-01-28 21:59 GMT+8(北京时间)
#长期COVID #脑雾 #抑郁 #焦虑 #文化差异
ScienceDaily Why long COVID brain fog seems so much worse in the U.S. A massive international study of more than 3,100 long COVID patients uncovered a striking divide in how brain-related symptoms are reported around the world. In the U.S., the vast majority of non-hospitalized patients described brain fog, depression, and…
Post #4218 55
健康饮食图表可以激发懒于饮食健康的年轻人对健康饮食的兴趣,研究发现
欧洲食品信息委员会(EUFIC)的一项研究发现,年轻人面临着独特的饮食挑战,包括有限的资源和时间限制,以及健康饮食的社会和情感障碍。该研究探索了18-25岁英国年轻人对健康饮食图表的反应,图表是为那些尚未致力于改变饮食的人设计的。
来源: Medical Xpress | 阅读全文
发布时间: 2026-03-01 02:00 GMT+8(北京时间)
#健康饮食 #年轻人 #图表 #健康教育 #欧洲食品信息委员会
Medicalxpress Infographics about healthy eating can spark interest among unmotivated young adults, study finds Young adults who are not motivated to eat healthily can still be engaged with the right type of communication, according to new research from the European Food Information Council (EUFIC). Young adults ...
Post #4217 59
你的早晨咖啡可能会成为抗癌的武器
德克萨斯A&M大学科学家正在将日常的提神剂转变为高科技医疗开关。通过将咖啡因与CRISPR基因编辑技术结合,研究人员已经创造了一个系统,使细胞可以事先编程,然后只需通过饮用少量的咖啡、巧克力或汽水,细胞内的基因编辑活动即可激活。…
来源: ScienceDaily | 阅读全文
发布时间: 2026-02-28 22:03 GMT+8(北京时间)
#CRISPR #咖啡 #癌症 #基因编辑
ScienceDaily Your morning coffee could one day help fight cancer Scientists at Texas A&M are turning an everyday pick-me-up into a high-tech medical switch. By combining caffeine with CRISPR gene editing, researchers have created a system that allows cells to be programmed in advance — and then activated simply by consuming…
Post #4216 49
科学家发现细菌杀死switch并可能改变对超级细菌的斗争
科学家们正在寻找新的抗生素靶点来应对日益难以治疗的耐药细菌。研究人员发现几个无关的病毒会disable细菌细胞壁构建所必需的关键蛋白质MurJ。高分辨率成像显示这些病毒蛋白质锁定MurJ到单一位置,从而停止细胞壁的构建,导致细菌死亡。
来源: ScienceDaily | 阅读全文
发布时间: 2026-02-28 22:20 GMT+8(北京时间)
#细菌 #抗生素 #耐药性 #病毒
ScienceDaily Scientists discover a bacterial kill switch and it could change the fight against superbugs Drug-resistant bacteria are becoming harder to treat, pushing scientists to look for new antibiotic targets. Researchers have now discovered that several unrelated viruses disable a key bacterial protein called MurJ, which is essential for building the bacterial…
Post #4215 39
胚胎巨细胞分裂新发现挑战教科书
科学家们揭示了一个巨大胚胎细胞分裂的新方式——不依赖于传统的“钱包环”来分裂细胞。研究人员通过研究鲑鱼胚胎发现,细胞并没有形成一个完全闭合的收缩环,而是使用了一个巧妙的“机械齿轮”系统。
来源: ScienceDaily | 阅读全文
发布时间: 2026-02-28 22:33 GMT+8(北京时间)
#细胞分裂 #胚胎发育 #鲑鱼
ScienceDaily Textbooks challenged by new discovery about how cells divide Scientists have uncovered a surprising new way that giant embryonic cells divide—without relying on the classic “purse-string” ring long thought essential for splitting a cell in two. Studying zebrafish embryos, researchers found that instead of forming a…
Post #4214 57
地球上第一种动物没有骨骼,改变了我们对它们的理解
研究表明,原始的海绵可能是软体的,没有骨骼,这解释了为什么它们的化石直到很晚才出现。通过分析数百个基因并模拟骨骼的演化,科学家发现,矿化的刺在不同海绵物种中独立演化。这种发现重新写了第一批珊瑚礁动物和可能是所有第一种动物的起…
来源: ScienceDaily | 阅读全文
发布时间: 2026-02-28 22:50 GMT+8(北京时间)
#海绵 #骨骼 #演化
ScienceDaily The first animals on Earth had no skeletons and that changes everything Sponges may be ancient, but their timeline has been murky. New research suggests the earliest sponges were soft and skeleton-free, explaining why their fossils don’t appear until much later. By analyzing hundreds of genes and modeling how skeletons evolved…
Post #4213 37
身体真正的衰老:21个器官中的7,000万细胞地图
科学家们创建了一个巨大的细胞地图,展示了衰老如何在21个器官中重新塑造身体。通过研究近7,000万个细胞,他们发现衰老比预期早开始,并且在身体各个部位有序地发生。研究还发现约有四分之一的细胞类型随着时间的推移而变化,并且这些变化在…
来源: ScienceDaily | 阅读全文
发布时间: 2026-02-28 23:25 GMT+8(北京时间)
#细胞地图 #衰老 #器官 #遗传 #热点
ScienceDaily How the body really ages: 7 million cells mapped across 21 organs Scientists have built a massive cellular atlas showing how aging reshapes the body across 21 organs. Studying nearly 7 million cells, they found that aging starts earlier than expected and unfolds in a coordinated way throughout the body. About a quarter…
Post #4212 36
科学家发现破坏遗传密码基本规则的微生物
科学家们在加州大学伯克利分校发现了一种微生物,它违反了生物学中最基本的规则之一。这种甲烷产生的古菌在DNA中的特定三位数密码通常被视为“停止”信号,但有时它会将其解读为“绿灯”,并在蛋白质中添加一种不寻常的氨基酸,从而继续构建蛋…
来源: ScienceDaily | 阅读全文
发布时间: 2026-02-28 14:47 GMT+8(北京时间)
#遗传密码 #微生物 #蛋白质 #环境条件
ScienceDaily Scientists discover microbe that breaks a fundamental rule of the genetic code Scientists at UC Berkeley have discovered a microbe that bends one of biology’s most sacred rules. Instead of treating a specific three-letter DNA code as a clear “stop” signal, this methane-producing archaeon sometimes reads it as a green light—adding an…
Post #4211 42
研究揭示蛋白质结构变化新类别的阿尔茨海默病生物标志物
一项由NIH资助的研究揭示了阿尔茨海默病生物学的新见解,可能有助于早期诊断和未来的临床试验。
来源: NIH | 阅读全文
#阿尔茨海默病 #蛋白质结构 #生物标志物
National Institutes of Health (NIH) Study measuring changes in protein structure establishes new class of Alzheimer’s biomarkers NIH-funded insights into Alzheimer’s biology could help with early diagnosis, future clinical trials
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