Metabolic control of macrophages in coronavirus disease 2019.

This review explores how immune cells called macrophages respond to COVID-19 infection and how their internal energy processes affect disease severity. Macrophages are among the first defenders that detect viruses and coordinate immune responses. Researchers examined how these cells' metabolism—the way they produce and use energy—determines whether the body successfully clears the virus or develops dangerous inflammation and lung scarring. The study found that macrophages can change their behavior based on signals from their environment, including oxygen levels, nutrients, and viral components. When macrophage metabolism becomes disrupted during SARS-CoV-2 infection, it can lead to either excessive inflammation or inadequate immune responses, both contributing to severe COVID-19 outcomes. The authors analyzed how specific metabolic pathways within macrophages control their protective versus harmful functions. Understanding this connection between cellular energy processes and immune responses is crucial because it reveals new treatment targets. For patients recovering from COVID-19 or experiencing long-term symptoms, this research suggests that therapies addressing metabolic dysfunction in immune cells could help restore balance and reduce complications. While this review doesn't directly study acupuncture, the findings about inflammation regulation may be relevant to understanding how acupuncture's anti-inflammatory effects could support recovery in post-COVID patients. Traditional Chinese medicine approaches, including acupuncture, have been explored for immune system support and inflammation management. If you're considering acupuncture for post-COVID recovery or related conditions, consult with a licensed acupuncturist certified by the National Certification Commission for Acupuncture and Oriental Medicine (NCCAOM).

This comprehensive review examines the metabolic regulation of macrophage function in COVID-19 pathogenesis. The authors systematically analyze how cell-intrinsic metabolic pathways (glycolysis, oxidative phosphorylation, lipid metabolism) and extrinsic microenvironmental factors (hypoxia, metabolites, pathogen signals) modulate macrophage phenotypic plasticity and effector responses to SARS-CoV-2. The review synthesizes evidence demonstrating that metabolic dysregulation in macrophages critically determines disease trajectory—from effective viral clearance to pathological hyperinflammation and fibrotic sequelae. Key mechanistic insights reveal how disrupted metabolic-immune crosstalk drives COVID-19 severity. No specific sample sizes or effect sizes are reported as this is a literature review rather than an empirical study. Clinical relevance: Understanding macrophage metabolic nodes as therapeutic targets may inform integrative approaches to managing post-COVID inflammation and immune dysregulation. Acupuncture's documented immunomodulatory and anti-inflammatory effects warrant investigation in the context of metabolic immune reprogramming during viral recovery.