The selected pathophysiological aspects of PPARs activation

Area of Science:

• Cardiovascular Biology
• Metabolic Regulation
• Molecular Endocrinology

Background:

• Peroxisome proliferator activated receptors (PPARs) are nuclear transcription factors regulating glucose and lipid metabolism.
• Three PPAR isoforms (alpha, beta/delta, gamma) exist, with diverse tissue distribution and functions.
• PPARs exhibit anti-atherogenic, anti-inflammatory, and anti-hypertensive properties, including cardioprotection in hypertension-induced cardiac hypertrophy.

Purpose of the Study:

• To review the dual role of PPARs activation in cardiac pathophysiology.
• To explore the potential unfavorable effects of PPARs on lipid metabolism in cardiomyocytes.
• To discuss the implications of PPARs activation in conditions like diabetes, metabolic syndrome, and obesity.

Main Methods:

• Literature review of experimental reports and hypotheses.
• Analysis of existing evidence on PPARs function and dysfunction.
• Synthesis of pathophysiological aspects of PPARs activation in cardiac hypertrophy.

Main Results:

• PPARs activation demonstrates cardioprotective effects in hypertension-induced cardiac hypertrophy.
• Emerging evidence suggests PPARs activation can induce lipotoxicity in cardiomyocytes.
• This lipotoxicity may contribute to pathological cardiac hypertrophy in metabolic diseases.

Conclusions:

• PPARs possess a complex role in cardiac health, with both beneficial and detrimental effects.
• Understanding the balance of PPARs activation is crucial for managing metabolic and cardiovascular diseases.
• Further research is needed to elucidate the precise mechanisms of PPARs-induced lipotoxicity and its clinical relevance.