聚合全网优质知识内容，持续更新AI科普、编程小知识、医学健康、科学前沿、心理成长、外刊精选、设计资源与实用干货，帮助用户高效获取有价值的学习资料和知识分享。https://learn.88lin.eu.org/?channel=CNSmydreamhttps://learn.88lin.eu.org/posts/CNSmydream-422https://learn.88lin.eu.org/posts/CNSmydream-422Sat, 25 Oct 2025 00:00:22 GMT<div class="image-list-container image-list-even"> <button type="button" class="image-preview-button image-preview-wrap" popovertarget="modal-CNSmydream-422-0" popovertargetaction="show" aria-label="Open image preview: 有趣的“悖论”：肥胖相关基因缺陷竟能降低心脏病风险？通常，肥胖与高血脂和心血管疾病风险密切相关 "> <img src="/static/https://cdn5.telesco.pe/file/kGCe0yb23v3_f02-EesO_hxa0Qk32B5b-NPo4dzuSKi8srMb0vfUx0Q9D2Qnu_mYQjAefo6ghQfCq28yml_4LofLp6FJB_hYzwdT9dT3hXR9VMLxU6kWETtegzN8aU-ISg1gmIPbnFQv7xtXvjiMy0G7NkScciJwKMBee3I1eRlGB-Lro0ad8Ldkl053bvpreEQNN5hrTc8eCqdnoLJbHe02npX7ED1YL3iAPWJG7vt7RrRrQ9-LpxGLeKcfyHSlDlU1OZNphk1VUH_PAWFgxlHDjMzBMF6l8hfG3IJXs7wuXRcB_bbdvuFFUrmxz1MxYyONAA4wP3-n5J_Ass88yg.jpg" alt="有趣的“悖论”：肥胖相关基因缺陷竟能降低心脏病风险？通常，肥胖与高血脂和心血管疾病风险密切相关 " width="453" height="210" loading="eager" /> </button> <div class="modal" id="modal-CNSmydream-422-0" popover="auto" aria-label="Image preview"> <button type="button" class="modal__backdrop" popovertarget="modal-CNSmydream-422-0" popovertargetaction="hide" aria-label="Close image preview"></button> <button type="button" class="modal__close" popovertarget="modal-CNSmydream-422-0" popovertargetaction="hide" aria-label="Close image preview">×</button> <div class="modal__surface"> </div> </div> <button type="button" class="image-preview-button image-preview-wrap" popovertarget="modal-CNSmydream-422-1" popovertargetaction="show" aria-label="Open image preview: 有趣的“悖论”：肥胖相关基因缺陷竟能降低心脏病风险？通常，肥胖与高血脂和心血管疾病风险密切相关 "> <img src="/static/https://cdn5.telesco.pe/file/d465hn9nV2Q6sJtfEHXPfVyB00cqK4tCbsfnQAhSXZoDWbE3-gDfGTzPb9XYaplNTSlLoG1_6hn5nVu61HbeccJ5nM9GGOotDvWKcG4-qesS0jmyIP0eWp80WovyUsU4KSeVDQr1Xb3FIyIHREAvYP0VabhdghaRxgeCyzzGrByB4dxug3ads9oH7l5_QFXNLOpqpX8oXA9tbVwr2bxwr2c84OJrxHFJME8CVzGRoejCcPCysyEHWPxkaic3lgYhWiDODbTNl2U5AosZHB4KKT7RrG0AoWOhYkdsR1Mru-tmnfgDeUuOyBkB8uyO4jcjIM4gSoT-ozaY_11i6PQM2A.jpg" alt="有趣的“悖论”：肥胖相关基因缺陷竟能降低心脏病风险？通常，肥胖与高血脂和心血管疾病风险密切相关 " width="453" height="211" loading="eager" /> </button> <div class="modal" id="modal-CNSmydream-422-1" popover="auto" aria-label="Image preview"> <button type="button" class="modal__backdrop" popovertarget="modal-CNSmydream-422-1" popovertargetaction="hide" aria-label="Close image preview"></button> <button type="button" class="modal__close" popovertarget="modal-CNSmydream-422-1" popovertargetaction="hide" aria-label="Close image preview">×</button> <div class="modal__surface"> </div> </div> </div><div class="tgme_widget_message_text js-message_text">有趣的“悖论”：肥胖相关基因缺陷竟能降低心脏病风险？<br /><br />通常，肥胖与高血脂和心血管疾病风险密切相关 。但《自然·医学》一项最新研究发现了一个悖论：由黑皮质素-4受体（<mark class="highlight">MC4R</mark>）基因功能丧失导致的肥胖，反而可能对心血管健康有益 。<br /><br />该机制的关键在于MC4R缺陷似乎模拟了“营养不足”状态，并降低了交感神经系统的活性 。这至少带来两方面好处：首先，在进食高脂餐后，身体能更高效地清除血液中的甘油三酯类脂蛋白（TRLs），使其峰值浓度降低了50% ，并倾向于将脂肪优先存入脂肪组织而非氧化消耗 。其次，研究者推测，在空腹状态下，这种缺陷可能通过增加肝脏的LDL受体（“坏胆固醇”受体），从而加速清除血液中的LDL胆固醇 。<br /><br />这一发现表明，大脑中的MC4R通路是连接体重增加和脂质代谢的关键机制 。该研究揭示了中枢神经系统在调控血脂和心血管风险中的重要作用 ，为降低心血管疾病风险提供了潜在的新治疗靶点 。<br /><br /><blockquote>别人是“天选之子”，这是“天选之...胖子？”</blockquote><br /><br />来源：<a href="https://doi.org/10.1038/s41591-025-03976-1" target="_blank" rel="noopener" title="Nature">Nature</a><br /><br /><a href="/search/result?q=%23MC4R&amp;channel=CNSmydream" title="#MC4R">#MC4R</a> <a href="/search/result?q=%23%E8%84%82%E8%B4%A8%E4%BB%A3%E8%B0%A2&amp;channel=CNSmydream" title="#脂质代谢">#脂质代谢</a> <a href="/search/result?q=%23%E4%BA%A4%E6%84%9F%E7%A5%9E%E7%BB%8F%E7%B3%BB%E7%BB%9F&amp;channel=CNSmydream" title="#交感神经系统">#交感神经系统</a><br /><br /><i class="emoji"><b>🧬</b></i> <a href="https://t.me/CNSmydream" target="_blank" rel="noopener" title="频道">频道</a> ｜ <i class="emoji"><b>🧑‍🔬</b></i> <a href="https://t.me/CNSmydream2" target="_blank" rel="noopener" title="群组">群组</a> ｜ <i class="emoji"><b>📨</b></i> <a href="https://t.me/sciReviewer_bot" target="_blank" rel="noopener" title="投稿">投稿</a></div>