间歇性禁食可以通过限制托和血清的中心可用性行为来提高性行为
Kan Xie1, Chengfeng Wang2, Enzo Scifo1
1Translational Biogerontology Lab, German Center for Neurodegenerative Diseases (DZNE), Venusberg-Campus 1/99, 53127 Bonn, Germany.
Cell metabolism
|March 29, 2025
概括
间歇性禁食 (IF) 通过增强交配行为而不是传统指标,在老年小鼠中保持雄性生殖成功. 这与IF通过降低托可用性来降低与年龄相关的血清素抑制有关.
科学领域:
- 生殖生物学 生殖生物学
- 神经内分泌学神经内分泌学
- 衰老的研究研究.
背景情况:
- 衰老的雄性哺乳动物经历生理和行为下降影响生殖,包括减少性欲和内分泌变化.
- 血清能通路参与调节性行为,与年龄相关的变化可能导致生殖功能下降.
研究的目的:
- 研究间歇性禁食 (IF) 对雄性小鼠与年龄相关的生殖能力下降的影响.
- 为了确定IF是否通过改变传统的生殖指标或交配行为来改善生殖成功.
- 阐明神经生物学机制,特别是血清激素路径,是IF对生殖行为的影响的基础.
主要方法:
- 雄性C57BL/6J小鼠接受了间歇性禁食 (IF) 协议.
- 通过交配试验和传统生殖指标 (精子质量,内分泌功能) 的分析来评估生殖成功.
- 脑组织分析侧重于血清激素水平及其前体酸的可用性,以评估血清激素路径活性.
主要成果:
- 间歇性禁食 (IF) 在老年小鼠中显著保持了生殖成功.
- IF没有改善传统的生殖指标,如精子质量或内分泌功能.
- IF在老年小鼠中增强了交配行为,归因于抵消因年龄而增加的血清抑制.
- 这种行为改善与IF对减少大脑外围托供应的影响有关.
结论:
- 间歇性禁食 (IF) 可以减轻与年龄相关的男性生殖健康的下降,主要是通过增强交配行为.
- 该机制涉及通过改变托的可用性来调节中枢血清系统.
- 像IF这样的饮食干预措施为解决与年龄相关的男性性欲和生殖功能减少提供了一个新的策略.
相关概念视频
01:23Antidepressant Drugs: MAOIs and Other Agents
Atypical antidepressants, including bupropion (Wellbutrin), mirtazapine (Remeron), nefazodone (Serzone), trazodone (Desyrel), and vilazodone (Viibryd), offer unique mechanisms of action. Bupropion weakly inhibits dopamine and norepinephrine reuptake, aiding depression treatment and smoking cessation, with a low risk of sexual dysfunction. Mirtazapine enhances serotonin and norepinephrine neurotransmission, leading to sedation, increased appetite, and weight gain. As a result, it helps treat...
01:19Management of Insomnia
The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
01:23Drugs Affecting GI Tract Motility: Serotonin Receptor Agonists
Serotonin, a crucial neurotransmitter synthesized by enterochromaffin cells, plays a cardinal role in regulating gastrointestinal (GI) motility. With over 90% of the body's total serotonin in the GI tract, its influence on digestive processes is profound. Serotonin is swiftly released upon various stimuli, such as food boluses or certain drugs, triggering intrinsic sensory neurons in the myenteric plexus and extrinsic vagal and spinal sensory neurons. This leads to the activation of the...
01:18Metabolic States of the Body: The Postabsorptive State
The postabsorptive state usually starts about four hours after a meal and lasts until the next meal is eaten. During this time, the digestive system stops absorbing nutrients, and the body uses stored energy reserves to maintain stable blood glucose levels.
Initially, glycogen stored in the liver is broken down to release glucose into the bloodstream, while glycogen in the muscles is broken down to supply glucose for energy directly within the muscle cells. As glycogen stores diminish,...
Initially, glycogen stored in the liver is broken down to release glucose into the bloodstream, while glycogen in the muscles is broken down to supply glucose for energy directly within the muscle cells. As glycogen stores diminish,...
01:24Metabolic States of the Body: Fasting and Starvation
During the initial hours of fasting, the body uses up its glycogen stores as an energy source. Once these glycogen reserves are depleted, the body begins breaking down stored triglycerides and structural proteins. During this stage, glycerol becomes a key substrate for gluconeogenesis, while free fatty acids undergo beta-oxidation to provide energy for tissues, such as skeletal muscle. In the fasting state, the body spares protein breakdown as much as possible to conserve muscle and structural...
01:30Regulation of Food Intake
Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...