在CFA诱导的炎症中,Ocimene通过TLR4/NLRP3介导的机制减轻烧灭
Iqra Laraib1, Sumera Qasim2, Ambreen Malik Uttra3
1Department of Pharmacology, College of Pharmacy, University of Sargodha, Sargodha, 40100, Pakistan.
Inflammopharmacology
|April 23, 2025
概括
奥西门 (OC) 通过通过TLR4/NLRP3/GSDMD途径抑制热致死,有效降低了关节炎症状. 这种天然化合物表现出显著的抗炎和抗氧化作用,为风湿性关节炎治疗提供了潜力.
科学领域:
- 药理学 药理学是指药理学的学科.
- 免疫学 免疫学 免疫学
- 生物化学 生物化学
背景情况:
- 类风湿性关节炎 (RA) 涉及炎症和热,通常由TLR4/NLRP3途径介导.
- 炎症性细胞死亡的Pyroptosis有助于RA的进展和慢性疼痛.
- 现有的治疗方法可能有局限性,需要探索新型治疗剂.
研究的目的:
- 在关节炎的小鼠模型中研究 ocimene (OC) 作为 TLR4/NLRP3 途径介导的 pyroptosis 的抑制剂的潜力.
- 评估OC的抗关节炎作用并阐明其潜在的药理机制.
主要方法:
- 用甲诱导的关节炎小鼠模型来评估OC的抗关节炎作用.
- 药理学测试包括宏观,放射和生物化学分析 (ELISA,PCR).
- 评估的关键标志物是炎症调解剂 (PGE-2,5-LOX),氧化应激标志物 (MDA,GSH,CAT,SOD) 和与热相关的蛋白质 (NFκB,caspase-1,ASC,IL-1β,IL-18,GSDMD).
主要成果:
- 在关节炎小鼠中,口服OC剂量显著降低了脚胀和关节炎症.
- OC抑制了NLRP3炎症酶激活,降低了NFκB,caspase-1和ASC的调节,并减少了IL-1β和IL-18的释放.
- OC调节了GSDMD介导的热,减少了氧化应激标记物 (MDA) 和增强了抗氧化剂标记物 (GSH,CAT,SOD),同时也影响了COX酶活性.
结论:
- 奥西梅因通过调节TLR4/NLRP3/GSDMD信号通路和热致死,表现出显著的抗关节炎特性.
- 氧化显示出强大的抗炎和抗氧化作用,使其成为治疗类风湿性关节炎和相关疾病的有希望的候选人.
- 这些发现支持OC在缓解RA症状和通过其多目标机制减少疾病进展方面的治疗潜力.
相关概念视频
01:28Inflammatory Response
1.6K
An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
1.6K
01:17The Extrinsic Apoptotic Pathway
5.4K
The extrinsic apoptotic pathway is initiated when extracellular death-inducing signals, such as specific cytokines, activate the death receptors expressed on the cell surface. The immune cells involved in this pathway are natural killer cells (NK cells) and cytotoxic T-lymphocytes. NK cells are critical in innate immune response, while cytotoxic T-lymphocytes are associated with adaptive immune response. These cells recognize specific receptors expressed on the altered cells and activate...
5.4K
01:24T Cell Types and Functions
614
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
614
01:20Chronic Obstructive Pulmonary Disease-II: Pathophysiology
2.7K
Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation
Chronic Inflammation
2.7K