Kitwan Lynn, Makobe Celestine, Mdachi Raymond, Maranga Dawn Nyawira, Isaac Alfred Orina, Nyariki James Nyabuga
Department of Medical Microbiology Department, Jomo Kenyatta University of Agriculture and Technology (JKUAT), Nairobi, Kenya.
Biotechnology Research Institute, Kenya Agricultural and Livestock Research Organization, Kikuyu, Kenya.
J Parasit Dis. 2023 Mar;47(1):167-184. doi: 10.1007/s12639-022-01553-8. Epub 2022 Dec 1.
During the late stage of Human African Trypanosomiasis (HAT), there is severe cytokine-driven inflammation, oxidative stress and organ damage. Controlling inflammation and oxidative damage presents unique therapeutic opportunities to improve treatment outcome. The current study sought to determine the putative impact of Coenzyme-Q10 (Co-Q), a potent antioxidant and anti-inflammatory, on adverse inflammatory and oxidative events during (T.b.r) infection. Group one constituted the control; the second group was infected with T.b.r; the third group was orally administered with 200 mg/kg Co-Q for two weeks; thereafter, Co-Q administration continued after infection with T.b.r. Co-Q improved the survival rate of infected mice and prevented full blown parasite driven splenomegaly and hepatomegaly. Co-Q prevented characteristic T.b.r-driven breach of the blood brain barrier and improved neurological integrity among T.b.r infected mice. Co-Q protected from T.b.r-induced microcytic hypochromic anaemia and thrombocytopenia. T.b.r-induced oxidative stress in the vital organs was assuaged following exposure to Co-Q. Co-Q blocked T.b.r-induced derangement of high density lipoprotein and triglyceride levels. Co-Q significantly abrogated T.b.r-driven elevation of serum TNF-α and IFN-γ levels. Moreover, T.b.r-induced kidney and liver damage was assuaged by Co-Q administration. Co-Q administration downregulated T.b.r-induced elevation of uric acid and C-reactive protein. Likewise, T.b.r infected mice receiving Co-Q exhibited normal brain architecture. In conclusion, treatment with Co-Q may be useful in protecting against T.b.r-mediated organ injury, lethal inflammation and oxidative stress commonly present in severe late stage HAT; and presents unique opportunities for an adjunct therapy for late stage HAT.
在人类非洲锥虫病(HAT)晚期,存在严重的细胞因子驱动的炎症、氧化应激和器官损伤。控制炎症和氧化损伤为改善治疗结果提供了独特的治疗机会。当前研究旨在确定辅酶Q10(Co-Q),一种强效抗氧化剂和抗炎剂,对布氏锥虫(T.b.r)感染期间不良炎症和氧化事件的潜在影响。第一组为对照组;第二组感染布氏锥虫;第三组口服200毫克/千克辅酶Q,持续两周;此后,在感染布氏锥虫后继续给予辅酶Q。辅酶Q提高了感染小鼠的存活率,并预防了寄生虫驱动的全面脾肿大和肝肿大。辅酶Q预防了布氏锥虫驱动的血脑屏障特征性破坏,并改善了布氏锥虫感染小鼠的神经完整性。辅酶Q预防了布氏锥虫诱导的小细胞低色素性贫血和血小板减少。暴露于辅酶Q后,重要器官中布氏锥虫诱导的氧化应激得到缓解。辅酶Q阻止了布氏锥虫诱导的高密度脂蛋白和甘油三酯水平紊乱。辅酶Q显著消除了布氏锥虫驱动的血清TNF-α和IFN-γ水平升高。此外,给予辅酶Q缓解了布氏锥虫诱导的肾脏和肝脏损伤。给予辅酶Q下调了布氏锥虫诱导的尿酸和C反应蛋白升高。同样,接受辅酶Q的布氏锥虫感染小鼠表现出正常的脑结构。总之,辅酶Q治疗可能有助于预防布氏锥虫介导的器官损伤、严重晚期HAT中常见的致命炎症和氧化应激;并为晚期HAT的辅助治疗提供了独特的机会。