Resveratrol Could Suppress Pathogen that Causes Inflammation

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20 Oct 2016 --- Resveratrol, a component of red wine and grapes, may help control inflammation induced by a bacterial pathogen that is linked to upper respiratory tract inflammatory diseases, according to a new study published in Scientific Reports.

“It has been shown that resveratrol can suppress inflammation, but how it regulates inflammation still remains largely unknown,” said Jian-Dong Li, a senior author of the study, director of the Institute for Biomedical Sciences at Georgia State, and a Georgia Research Alliance Eminent Scholar.

“We found that resveratrol suppresses a major bacterial pathogen causing otitis media and chronic obstructive pulmonary diseases (COPD) by up-regulating or increasing the production of a negative regulator called MyD88 short.”

Resveratrol belongs to a group of compounds called polyphenols that are thought to act like antioxidants and protect the body against damage. It has long been considered a therapeutic agent for various diseases, including inflammatory diseases.

In the study, resveratrol was effective against inflammation caused by nontypeable Haemophilus influenzae (NTHi), a major respiratory pathogen.

This study found for the first time that resveratrol decreases NTHi-induced expression of pro-inflammatory mediators in airway epithelial cells and in the lungs of mice by enhancing MyD88 short, a negative regulator of inflammatory signaling pathways.

MyD88 short is considered a “brake pedal protein” because it can tightly control inflammation induced by this respiratory pathogen. It could be a critical target with significant therapeutic potential for suppressing inflammation associated with chronic airway disease.

The researchers also found that resveratrol has anti-inflammatory effects after NTHi infection, which demonstrates its therapeutic potential.

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