Universidade Regional do Noroeste do Estado do Rio Grande do SulBrazil
This chapter discusses about subclinical processes related to insulin resistance development that worsen the muscle metabolic functions, generated by factors such as lifestyle (bad quality food intake and sedentary behavior) and aging. Also discussed are the effects of regular physical exercise as a strategy to prevent the metabolic impairment in organisms, approaching since muscle subclinical molecular processes to the whole body’s integrative physiology. Insulin resistance development includes modification in the pattern of inflammatory cytokines, heat shock proteins, tissue- specific defects in insulin action and signaling, oxidative stress and ectopic lipid deposition. The exercise is a known modulator of all parameters listed above and has important role in the regulation of “immune-metabolic” homeostasis from the muscle to the whole body. This chapter aims to present a new molecular approach related to the control of metabolism and encourage scientists and students to propose new strategies against insulin resistance and diabetes type 2 developments.
Part of the book: Muscle Cell and Tissue
Epidemiologic and experimental studies suggest that environmental exposures to air pollutants can increase prevalence of metabolic and cardiorespiratory diseases. Among the risk factors, many studies have shown that air pollution, especially by fine particulate matter (PM2.5), can lead to the development of type 2 diabetes mellitus (T2DM) or make diabetics more susceptible to other health complications. This chapter aimed to discuss the pathophysiologic mechanisms evolved in susceptibility to cardiorespiratory PM2.5 effects in T2DM subjects, as well as the enhancing effect of PM2.5 exposure on development of T2DM. We discussed the pathophysiologic mechanisms of PM2.5 exposure and T2DM based on pro−/anti-inflammatory balance, metabolic regulation, redox status, and heat shock response, reinforcing the complex nature of T2DM etiology and highlighting the PM2.5 air pollution as a critical health problem.
Part of the book: Diabetes and Its Complications