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American Focus > Blog > Health and Wellness > Cigarette smoke alters microbiota and aggravates flu severity, researchers find
Health and Wellness

Cigarette smoke alters microbiota and aggravates flu severity, researchers find

Last updated: November 20, 2024 11:16 am
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Cigarette smoke alters microbiota and aggravates flu severity, researchers find
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New research has revealed a concerning link between cigarette smoke and the severity of influenza A virus infection. The study, published in the journal mSystems, found that cigarette smoke can disrupt the composition of oropharyngeal microbiota, leading to a worsened flu outcome.

For years, scientists have understood the detrimental effects of cigarette smoke on respiratory health. From chronic pulmonary disease to increased susceptibility to respiratory illnesses like the flu, the dangers of smoking are well-documented. However, this new study sheds light on a previously unknown consequence of cigarette smoke exposure.

The oropharynx, which encompasses the soft palate, throat walls, tonsils, and back of the tongue, plays a crucial role in respiratory health. Researchers discovered that chronic exposure to cigarette smoke in mice altered both gut and oropharyngeal microbiota. To further investigate the impact of disordered microbiota, mice exposed to cigarette smoke were cohoused with germ-free mice, allowing for the transfer of microbiota from smoke-exposed donors to the germ-free recipients.

Subsequent infection with influenza A virus revealed a stark difference in disease severity between germ-free mice colonized with bacteria from smoke-exposed mice and those from air-exposed mice. Mice with cigarette smoke-induced microbiota exhibited more severe symptoms, including increased weight loss, highlighting the role of microbiota in exacerbating viral infections.

Lead researcher Markus Hilty, Ph.D., emphasized the importance of considering the influence of microbiota on respiratory diseases in addition to direct smoke exposure. “It is not only the act of smoking itself that impacts respiratory health, but the microbiota of smokers may also play a significant role in the severity of respiratory infections, such as viral illnesses,” Dr. Hilty explained. The study’s findings underscore the need to address the disordered microbiota as a contributing factor to respiratory infections.

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This groundbreaking research, titled “Cigarette smoke-induced disordered microbiota aggravates the severity of influenza A virus infection,” provides valuable insights into the complex interplay between cigarette smoke, microbiota, and respiratory health. By understanding how cigarette smoke alters microbiota and worsens flu severity, researchers hope to develop targeted interventions to mitigate the impact of smoking on respiratory illnesses.

For more information on this study, please refer to the original publication in mSystems with the DOI: 10.1128/msystems.00790-24. This research was made possible by the American Society for Microbiology, a leading organization dedicated to advancing microbiology research and knowledge.

In conclusion, the study’s findings highlight the importance of considering the role of microbiota in respiratory health and underscore the need for comprehensive strategies to address the impact of cigarette smoke on viral infections.

TAGGED:aggravatesaltersCigarettefindFlumicrobiotaResearchersseveritysmoke
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