Oral nitrate reductase activity in erosive GERD patients is higher than controls. Therefore, any dietary nitrate load generates more nitrite in these patients. This excess nitrite at the gastroesophageal junction, may potentially contribute to the development of GERD. This is the first report linking oral nitrite production to erosive GERD in man. We suggest that a "nitrate hypothesis" may answer yet unanswered questions about GERD pathogenesis. If confirmed, it may change our understanding of mechanisms of GERD and provide novel therapeutic targets.
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