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[Reactive oxygen and nitrogen species in the clinical medicine]

Jaroslav Macásek1, Miroslav Zeman, Marek Vecka

  • 1Univerzita Karlova v Praze, 1. lékarská fakulta, IV. Interní klinika VFN. jmacasek@seznam.cz

Casopis Lekaru Ceskych
|October 27, 2011
PubMed

Insights

Reactive oxygen and nitrogen species (RONS) are crucial in disease development, causing cellular damage. Antioxidants combat RONS, protecting against conditions like diabetes and neurodegenerative diseases.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Clinical Medicine

Context:

  • Reactive oxygen and nitrogen species (RONS) are increasingly recognized for their significant roles in clinical medicine.
  • Free radicals, characterized by unpaired electrons, exhibit high reactivity, leading to cellular damage through propagation reactions.
  • RONS are implicated in the pathogenesis of numerous diseases, including atherosclerosis, diabetes, hyperlipidaemia, and neurodegenerative disorders.

Purpose:

  • To elucidate the multifaceted roles of RONS in biological systems and their implications in human health.
  • To highlight the mechanisms by which RONS contribute to cellular damage and disease progression.
  • To underscore the importance of antioxidant defense systems in mitigating RONS-induced oxidative stress.

Summary:

  • RONS are generated through various biochemical processes, including oxidative phosphorylation and nitric oxide synthase activity.
  • Enzymes such as myeloperoxidase and lipoxygenase catalyze the production of RONS.
  • These species can chemically modify DNA, proteins, and lipids, negatively impacting cellular functions.
  • Overproduction of RONS leads to tissue damage, while antioxidants play a vital role in preventing oxidative modifications.

Impact:

  • Understanding RONS' role is critical for developing therapeutic strategies targeting diseases associated with oxidative stress.
  • This knowledge aids in comprehending the molecular mechanisms underlying various chronic and degenerative conditions.
  • Highlights the balance between RONS production and antioxidant defenses in maintaining cellular homeostasis and preventing disease.

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