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Vitamin E and changes in serum ALT in patients with non-alcoholic steatohepatitis

The latest issue of the Alimentary Pharmacology & Therapeutics investigates Vitamin E and changes in serum alanine aminotransferase levels in patients with non-alcoholic steatohepatitis.

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Non-alcoholic steatohepatitis (NASH) is a common cause of serum alanine aminotransferase (ALT) elevations and chronic liver disease, but it is unclear how well ALT elevations reflect the liver injury.

Dr Hoofnagle and colleagues form Maryland, USA assessed how well changes in ALT elevations reflect improvements in liver histology in response to vitamin E therapy.

The vitamin E and placebo arms of the Pioglitazone vs. Vitamin E vs. Placebo in Non-alcoholic Steatohepatitis (PIVENS) trial were reassessed for associations among changes in ALT levels, body weight and liver histology.

An ALT response was defined as a decrease to ≤40 U/L and by ≥30% of baseline.

Liver biopsies taken before and after treatment were scored for non-alcoholic fatty liver disease activity (NAS) and fibrosis.

ALT responses were more frequent among vitamin E than placebo recipients
Alimentary Pharmacology & Therapeutics

ALT responses were more frequent among vitamin E than placebo recipients.

Among vitamin E recipients, ALT responses were associated with decreases in NAS, but not fibrosis scores, whereas among placebo recipients, ALT responses were associated with significant decreases in both.

The team found that weight loss was also associated with ALT response, improvements in NAS and fibrosis, but vitamin E had an added effect both with and without weight loss.

The research team noted that weight gain was associated with lack of ALT response, and worsening NAS and fibrosis scores in patients not on vitamin E.

Dr Hoofnagle's team concludes, "Decrease of ALT levels to normal in patients with NASH is usually associated with improved histological activity."

"Management should stress the value of weight loss and strongly discourage weight gain."

"Vitamin E can improve both ALT levels and histology with and without weight loss."

Aliment Pharmacol Ther 2013: 38(2): 134–143
28 June 2013

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