Nitric oxide-induced nitrative stress involved in microbial pathogenesis

Area of Science:

• * Infectious disease pathogenesis
• * Free radical research
• * Molecular virology

Background:

• * Infection pathogenesis involves complex host and microbial factors.
• * Reactive oxygen and nitrogen species, like superoxide (O(2)(-)) and nitric oxide (NO), are implicated in viral infections.
• * While antimicrobial against some pathogens, NO and O(2)(-) can exacerbate certain viral infections.

Purpose of the Study:

• * To review the role of nitrative stress in viral pathogenesis.
• * To highlight the impact of reactive nitrogen oxides in viral infections.
• * To discuss the formation and significance of 8-nitroguanosine during viral infections.

Main Methods:

• * Literature review of recent advances in free radical research.
• * Analysis of the biochemical mechanisms of reactive nitrogen species in viral infections.
• * Focus on nitrative stress-mediated pathogenesis, including 8-nitroguanosine formation.

Main Results:

• * Reactive nitrogen oxides, such as peroxynitrite (ONOO(-)), mediate the exacerbation of viral infections by NO and O(2)(-).
• * These species possess strong oxidation and nitration potential, leading to oxidative and nitrative stress.
• * Nitrative stress contributes to pathogenic processes and is linked to 8-nitroguanosine formation in infections like influenza.

Conclusions:

• * Nitrative stress plays a significant role in the pathogenesis of viral infections.
• * Understanding the impact of reactive nitrogen species is crucial for comprehending viral disease mechanisms.
• * Further investigation into nitrative stress-mediated viral pathogenesis is warranted.