• A Genetic Cause of Chronic Intestinal Pseudo-obstruction

A Genetic Cause of Chronic Intestinal Pseudo-obstruction

An inherited form of chronic intestinal pseudo-obstruction (CIPO) is caused by mutations in a transcription factor that disrupt the structure and function of enteric innervation, researchers report in the April issue of Gastroenterology. Elena Bonora et al show that patients with CIPO carry mutations in RAD21 that disrupt the ability of its

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  • How Does Smoking Lead to Pancreatic Cancer?

How Does Smoking Lead to Pancreatic Cancer?

Nicotine promotes pancreatic carcinogenesis by disrupting signaling and transcriptional pathways to cause dedifferentiation of acinar cells, researchers report in the November issue of Gastroenterology. One fourth of all deaths from pancreatic ductal adenocarcinoma (PDAC) are associated with tobacco use, and heavy smoking increases risk for PDAC 6-fold. Although smokers develop PDAC

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  • How Does Vitamin D Lower Cholesterol?

How Does Vitamin D Lower Cholesterol?

Researchers have identified a mechanism by which vitamin D reduces levels of cholesterol. In a mouse study published in the April issue of Gastroenterology, Edwin Chow et al. show that activation of the vitamin D receptor increases cholesterol 7α-hydroxylase (CYP7A1)—an enzyme that metabolizes cholesterol—by downregulating its repressor, SHP. Studies have

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