表观遗传衰老和治疗对塞马格卢提德的反应在的肝脏研究
Michael Corley1, Alina Pang1, Douglas Kitch2
1University of California, San Diego.
Research square
|November 19, 2025
概括
艾滋病毒和肝脏疾病患者的塞马格卢提德治疗可能会减缓生物衰老. 特定的表观遗传标记,DunedinPACE和PCDNAmTL,与肝脂肪和身体功能的改善相关.
科学领域:
- 内分泌学 在内分泌学.
- 肝病学 肝病学是一种肝病学.
- 老年学是一门学科.
背景情况:
- 作为GLP-1的RA,塞马格卢提德改善了艾滋病毒 (PWH) 和MASLD患者的代谢健康和肝脂肪.
- 在这个人群中,塞马格卢提德对表观遗传衰老生物标志物的影响尚不清楚.
研究的目的:
- 为了调查是否semaglutide治疗改变了MASLD的PWH中的表观遗传衰老生物标志物.
- 为了确定表观遗传衰老的变化是否与临床改善相关.
主要方法:
- 对SLIM LIVER研究 (NCT04216589) 的后期分析,这是一项针对PWH和MASLD的24周赛马格卢提德试验.
- 使用DunedinPACE,PCGrimAge和PCDNAmTL.TL进行评估的表观遗传衰老.
- 临床结果与具有表观遗传标志物下降与增加的参与者之间的比较.
主要成果:
- 在24周内,塞马格卢提德治疗显示出稳定的表观遗传衰老标志物.
- 一部分参与者 (41.5%) 呈现下降的DunedinPACE,与减少的肝脂肪和改善的步行速度相关.
- 增加的PCDNAmTL与明显改善的步行速度有关.
结论:
- 赛马格卢提德可以调节表观遗传年龄生物标志物,而DunedinPACE和PCDNAmTL反映了肝脏和身体功能的改善.
- 表观遗传生物标志物可以提高GLP-1RA试验中的精密老化疗法和生物衰老监测.
相关概念视频
Glucagon-like Receptor Agonists
824
Incretins include glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which stimulate insulin secretion post-meals. In type 2 diabetes, GIP's efficacy is reduced, making GLP-1 a viable drug target. GIP originates from preproGIP.
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
824
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism
186
Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
186
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption
212
As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...
212
Oral Hypoglycemic Agents: Biguanides and Glitazones
567
Biguanides, particularly metformin (Glucophage), are insulin sensitizers that enhance glucose uptake, thereby reducing insulin resistance. Unlike sulfonylureas, metformin doesn't prompt insulin secretion, which helps to curb hypoglycemia risk. Metformin is beneficial in treating conditions like polycystic ovary syndrome due to its insulin-resistance reduction capability. The drug's primary action involves curtailing hepatic gluconeogenesis, a significant contributor to high blood...
567


