Eduard Belskikh^1,*, Yuliya Marsyanova², Denis Melnikov³, Oleg Uryasev¹, Valentina Zvyagina²

BIOCELL, Vol.49, No.11, pp. 2093-2123, 2025, DOI:10.32604/biocell.2025.069272 - 24 November 2025

Abstract Elevated homocysteine is a clinically relevant metabolic signal in chronic obstructive pulmonary disease (COPD). Higher circulating levels track with oxidative stress, endothelial dysfunction, mitochondrial impairment, and pulmonary vascular remodeling, rise with disease severity, and may contribute to the excess cardiovascular risk—although effect sizes and causality remain uncertain. This review centers on the homocysteine–carnitine relationship in COPD pathophysiology. Carnitine deficiency, prevalent in COPD, can worsen mitochondrial bioenergetics, promote accumulation of acyl intermediates, and reduce nitric oxide bioavailability via endothelial nitric oxide synthase uncoupling (eNOS). Conversely, restoring carnitine status in experimental and early clinical settings has been… More >

YAO QIAN², JINGPING WANG², ZIWAN JI², HAO CHEN², YUCANG HE², XULING LV², ZIKAI ZHANG², TIAN LI², TIANYUN PAN³, LIQUN LI², MING LIN^1,*

BIOCELL, Vol.45, No.1, pp. 189-198, 2021, DOI:10.32604/biocell.2021.011827 - 26 January 2021

Abstract The cell activity of adipose-derived stem cells (ADSCs) is affected by the intracellular reactive oxygen species (ROS) and the level of autophagy. Previous studies reveal that acetyl-L-carnitine (ALC) possesses capacities of resisting oxidative stress and regulating autophagy. Activating molecule in Beclin1-regulated autophagy protein 1 (AMBRA1) plays a key role in initiating Beclin1-regulated autophagy. In the present study, we discovered ALC pretreatment (1 mM, 24 h) significantly increased the activity of ADSCs exposed to H₂O₂ (100 μM, 2 h) in vitro with improved stemness, and reduced the production of intracellular ROS. In addition, we found for the More >

Rohit S. Loomba^1,2, Enrique G. Villarreal^3,*, Riddhi Patel¹, Samantha Udarbe¹, Vincent Dorsey¹, Kristen Nelson-McMillan^1,4, Saul Flores^5,6

Congenital Heart Disease, Vol.15, No.6, pp. 447-455, 2020, DOI:10.32604/CHD.2020.012927 - 02 November 2020

Abstract Introduction: In children, data on the effects on carnitine supplementation and myocardial function are limited. A few studies have investigated the relationship between serum carnitine levels in the setting of depressed cardiac function and have demonstrated possible benefits. As such, this systematic review and meta-analyses aimed to assess the effects carnitine supplementation on left ventricular function. Materials and Methods: A systematic review of the literature was performed to identify full text manuscripts in English. PubMed, EMBASE, and the Cochrane databases were queried. Studies were included with data from pediatric patients, that used carnitine supplementation and included preand… More >