Pathophysiological Molecular Mechanisms of Obesity: A Link between MAFLD and NASH with Cardiovascular Diseases.

Obesity is now a worldwide epidemic ensuing an increase in comorbidities' prevalence, such as insulin resistance, type 2 diabetes (T2D), metabolic dysfunction-associated fatty liver disease (MAFLD), nonalcoholic steatohepatitis (NASH), hypertension, cardiovascular disease (CVD), autoimmune diseases, and some cancers, CVD being one of the main causes of death in the world. Several studies provide evidence for an association between MAFLD and atherosclerosis and cardio-metabolic disorders, including CVDs such as coronary heart disease and stroke. Therefore, the combination of MAFLD/NASH is associated with vascular risk and CVD progression, but the underlying mechanisms linking MAFLD/NASH and CVD are still under investigation. Several underlying mechanisms may probably be involved, including hepatic/systemic insulin resistance, atherogenic dyslipidemia, hypertension, as well as pro-atherogenic, pro-coagulant, and pro-inflammatory mediators released from the steatotic/inflamed liver. MAFLD is strongly associated with insulin resistance, which is involved in its pathogenesis and progression to NASH. Insulin resistance is a major cardiovascular risk factor in subjects without diabetes. However, T2D has been considered the most common link between MAFLD/NASH and CVD. This review summarizes the evidence linking obesity with MAFLD, NASH, and CVD, considering the pathophysiological molecular mechanisms involved in these diseases. We also discuss the association of MAFLD and NASH with the development and progression of CVD, including structural and functional cardiac alterations, and pharmacological strategies to treat MAFLD/NASH and cardiovascular prevention.

Physical and psychosocial determinants of quality of life in children with obesity.

Background: Obesity has a negative impact on the physical and psychosocial quality of life of children. As rates of obesity continue to increase, it is important to recognize the widespread effects obesity has on children and their families. Methods: This clinical investigation evaluated the self-reported quality of life of children with obesity in a weight management program and compared this to a parent/guardian's perspective of the child's quality of life using the Pediatric Quality of Life survey 4.0. The quality of life of children with obesity was compared to children with other chronic diseases and healthy children. Results: An association was discovered between the guardians' responses to the Pediatric Quality of Life survey and the child's age. Guardians with children younger than 11 years reported higher quality of life scores than guardians of children 11 years and older. Race, comorbidities of obesity, insurance type, household structure, and parental education attainment were not significantly associated with a child's quality of life. Children with obesity had a lower quality of life compared to children who were organ transplant recipients and children with organic gastrointestinal disease. Conclusions: These results emphasize the need to evaluate and treat the physical and psychosocial components of wellbeing in children with obesity at an early age.