慢性饮酒会加速心血管衰老,并降低心血管储备容量
Partha Mukhopadhyay1, Burhan Yokus2, Bruno Paes-Leme2
1Laboratory of Cardiovascular Physiology and Tissue Injury, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA. mpartha@mail.nih.gov.
GeroScience
|March 20, 2025
概括
慢性酒精消耗通过损害线粒体功能,增加氧化应激和促进炎症,加速大鼠的心血管衰老. 这导致心脏功能和血管储备减少,特别是在老年动物身上.
科学领域:
- 心血管科学 心血管科学
- 老年学是一门学科.
- 毒理学 毒理学 毒理学
背景情况:
- 心血管衰老涉及复杂的病理,如线粒体功能障碍,氧化应激和炎症,增加疾病风险.
- 过度饮酒与各种心血管问题有关,但其对心血管衰老的具体影响尚不清楚.
研究的目的:
- 研究慢性饮酒对年轻和老年老鼠心血管衰老的影响.
- 评估酒精对血液动力学,线粒体功能,氧化应激,脂质代谢,炎症,细胞死亡,衰老和心肌纤维化的影响.
主要方法:
- 给年轻和老龄化的Fisher F344BNF1大鼠进行了为期6个月的利伯-德卡利酒精饮食 (5%).
- 评估包括压力-体积系统,隔离的血管环,以及组织学,生物化学和分子生物学技术.
- 评估的关键参数包括血液动力学,线粒体功能,氧化/化应激,脂质代谢,炎症,细胞死亡,衰老和纤维化.
主要成果:
- 酒精损害了线粒体功能,破坏了脂质代谢,增加了氧化应激,炎症,细胞死亡和老化在两个年龄组.
- 缩性收缩功能下降,老年老鼠中,扩张性功能障碍和心肌纤维化恶化.
- 酒精诱导了血管氧化应激,亡和衰老,导致内皮功能障碍和外周抵抗力增加.
结论:
- 慢性饮酒会加速心血管衰老,降低心脏和血管储备能力.
- 酒精加剧了与年龄有关的心血管功能下降,增加了心血管疾病的风险.
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