相关实验视频
Updated: Jun 12, 2025
01:37
A Preterm Rat Model for Pain Studies
Published on: February 9, 2024
337
乳牛的早期疼痛经历对生命后期疼痛敏感度的影响
Zimbábwe Osório-Santos1,2, Thomas Ede1, Maria José Hötzel2
1Animal Welfare Program, Faculty of Land and Food Systems, The University of British Columbia, Vancouver, BC, V6T 1Z6, Canada.
JDS communications
|September 23, 2024
概括
在小牛中,早期的痛苦经历并没有增加后来的疼痛敏感性. 这项研究没有发现证据表明,在生命早期解开小牛的角芽会影响其对随后的痛苦刺激的反应.
科学领域:
- 兽医科学 兽医科学 兽医科学
- 动物行为 动物行为
- 疼痛研究 疼痛研究
背景情况:
- 早期的疼痛暴露可以提高人类的疼痛敏感性.
- 早期疼痛事件对牛晚期疼痛敏感性的影响在很大程度上仍未被探索.
研究的目的:
- 为了调查早期小牛期的痛苦事件是否会影响40天后的疼痛敏感性.
- 为了确定早期角芽发芽对霍尔斯坦小牛的疼痛反应的长期影响.
主要方法:
- 荷尔斯坦牛犊 (n=26) 被分为对照组和治疗组.
- 治疗小牛在大约9.5天的年龄内经历了一根角芽的腐蚀性粉散发;对照对象有假散发.
- 两组都接受了多式疼痛控制,四周后,对侧角被用热铁解开. 每周测量机械感知反应,使用角芽和后背上的藻度计.
主要成果:
- 在第二次解花后,两组都对对侧侧角芽的敏感性增加,对照组和治疗组之间没有显著差异.
- 在第二次发芽5小时后,在部观察到治疗和时间之间的相互作用,这表明潜在的,尽管尚未完全实现的治疗效果.
- 总的来说,这项研究不支持这样的假设,即早期的疼痛暴露会导致小牛对后期疼痛的敏感性增加.
结论:
- 在小牛中早期的角芽发芽,即使有多模式疼痛管理,也没有导致对随后的疼痛刺激的敏感性增加.
- 这些发现表明,早期的痛苦经历可能不会使牲畜对以后的疼痛敏感,这与人类的观察相反.
- 进一步的研究是有必要的,以充分理解疼痛处理和牛在生命早期事件后的长期疼痛敏感性.
相关概念视频
01:25Analgesia and Pain Management
551
Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
551
01:20Pain
469
Pain serves as a critical warning signal that alerts the body to potential or actual harm. When mechanical pressure on the skin is intense, such as from a sharp pinch, the sensation transitions from touch to pain. Similarly, extreme temperatures, like a hot pot handle, convert the sensation of heat into pain. Pain can also result from overstimulation of other senses, such as blinding light, loud noise, or the intense heat from habañero peppers. This ability to sense pain is essential for...
469
01:44Nociception
27.8K
Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain.
27.8K