Biological Mechanisms

The mechanisms underlying fatigue in SLE remain incompletely understood. A clinical trial is underway to evaluate NAD+ boosting in SLE. Trans fats can distort cell membrane architecture when incorporated into membranes instead of natural fatty acids. The article identifies immune disruption, membrane disruption, and prostaglandin imbalance as core mechanisms of trans fat harm. Preoperative anaemia worsens outcomes partly by reducing haemoglobin concentration and oxygen delivery to tissues. Trans fats promote chronic inflammation by stimulating pro-inflammatory prostaglandins while suppressing anti-inflammatory ones. PM2.5 particles can cross the alveolar barrier and enter systemic circulation. Reactive components of circulating PM2.5 can trigger oxidative stress that damages placental DNA and lipids. During surgical stress, anaemia can drive haemodynamic instability, especially in patients with cardiovascular or renal disease. The combined effects of organ reserve loss, persistent hypoxia, and inflammatory dysregulation predispose elderly patients to multi-organ failure and perioperative mortality. Chronic tissue hypoxia can reduce metabolic reserve and provoke systemic inflammati…