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  • Title: Efficacy of combining pentoxiphylline and vitamin E versus vitamin E alone in non-alcoholic steatohepatitis- A randomized pilot study.
    Author: Kedarisetty CK, Bhardwaj A, Kumar G, Rastogi A, Bihari C, Kumar M, Sarin SK.
    Journal: Indian J Gastroenterol; 2021 Feb; 40(1):41-49. PubMed ID: 33772456.
    Abstract:
    BACKGROUND AND AIM: Non-alcoholic steatohepatitis (NASH) is the most prevalent cause of chronic liver disease. Vitamin E (VE), an anti-oxidant, has shown improvement in NAFLD activity score (NAS) but not fibrosis. Pentoxiphylline (PTX), an anti-TNF-alpha agent, has been reported to reduce hepatic inflammation and fibrosis. We evaluated combination of these drugs in NASH patients. METHODS: In a prospective study, consecutive histologically proven patients with NASH were randomized to receive either PTX, 400 mg thrice daily and VE 400 IU twice daily (group PTVE, n = 36) or VE alone (group VE, n = 33). Clinical, dietary and biochemical follow-up was done till 12 months. Primary end-point was change in alanine aminotransferase (ALT)  levels.   RESULTS: Both groups were comparable at baseline. On a strict diet and lifestyle modification regimen, both groups had similar reduction in body mass index and waist circumference. There was a similar reduction in ALT levels in the two groups. Metabolically, patients in PTVE group had greater reduction in fasting insulin levels and homeostatic model assessment of insulin resistance (HOMA-IR) than VE group (p = 0.05). Tumor necrosis factor alpha (TNFα) levels were also significantly lower in PTVE group from 6 months onwards. Twelve (10%) patients had repeat liver biopsy (7 in group PTVE, 5 in group VE) with no difference in reduction of NAS score (p = 0.45). However, there was a significant fibrosis regression in PTVE compared to VE group (p = 0.003). CONCLUSIONS: These data show greater efficacy of a combination of PTX and VE in achieving fibrosis regression compared to VE alone with better metabolic homeostasis and amelioration of the pro-inflammatory status. TRIAL REGISTRATION: Clinical Trials Registry no. NCT01384578.
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