Impact of low‐dose UV‐A in Caenorhabditis elegans during candidate bacterial infections

Author:

Muthubharathi Balasubramanian Chellammal1ORCID,Subalakshmi Pandiarajan Kaarmegam1,Mounish Bynedi Sheshatri Chinna1,Rao Toleti Subba2,Balamurugan Krishnaswamy1

Affiliation:

1. Department of Biotechnology Alagappa University Karaikudi Tamil Nadu India

2. School of Arts and Sciences Sai University Chennai Tamil Nadu India

Abstract

AbstractUltraviolet radiation is a non‐ionizing radiation produced by longer wavelength energy sources with lower frequency and is categorized into UV‐A, UV‐B, and UV‐C. Minimal exposure to this radiation has several health benefits, which include treating microbial contaminations and skin therapies. However, the antimicrobial action of low‐dose UV‐A during pathogenic bacterial infections is still unrevealed. In this study, the impact of low‐dose UV‐A as pre‐ or post‐treatment using the model organism, Caenorhabditis elegans with candidate pathogens (Acinetobacter baumannii and Staphylococcus aureus) mediated infections was investigated. The results indicated enrichment of metabolites, reduced level of antioxidants, increased expression of dopamine biosynthesis and transportation, and decrease in serotonin biosynthesis when the organism was exposed to low‐dose UV‐A for 5 min. This, in turn, elevated the expression of candidate regulatory proteins involved in lifespan determination, innate immunity, and cAMP‐response element binding protein (CREB), which appear to increase the lifespan and brood size of C. elegans during A. baumannii and S. aureus infections. The findings suggested that the low‐dose UV‐A treatment during A. baumannii and S. aureus infections prolonged the lifespan and increased the egg‐laying capacity of C. elegans.

Publisher

Wiley

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