Saudi Journal of Gastroenterology
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EDITORIAL  
Year : 2016  |  Volume : 22  |  Issue : 3  |  Page : 169-170
Is vitamin e or ursodeoxycholic acid a valid treatment option for nonalcoholic fatty liver disease in 2016?


1 Department of Medicine, Division of Gastroenterology, WesternUniversity, London, ON N6A 5A5, Canada
2 Department of Medicine, Division of Gastroenterology, WesternUniversity, London, ON N6A 5A5, Canada; Department of Medicine, King Saud University, Riyadh, Saudi Arabia

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Date of Web Publication13-May-2016
 

How to cite this article:
Beaton MD, Al-Judaibi B. Is vitamin e or ursodeoxycholic acid a valid treatment option for nonalcoholic fatty liver disease in 2016?. Saudi J Gastroenterol 2016;22:169-70

How to cite this URL:
Beaton MD, Al-Judaibi B. Is vitamin e or ursodeoxycholic acid a valid treatment option for nonalcoholic fatty liver disease in 2016?. Saudi J Gastroenterol [serial online] 2016 [cited 2022 Dec 3];22:169-70. Available from: https://www.saudijgastro.com/text.asp?2016/22/3/169/182462


Nonalcoholic fatty liver disease (NAFLD) is a leading cause of chronic liver disease.[1] It affects 20%–40% of the general population and 20% of patients with NAFLD will progress to nonalcoholic steatohepatitis (NASH).[1],[2] It is well known that NASH patients may progress to liver cirrhosis and even hepatocellular carcinoma. NASH is currently the most rapidly growing indication for liver transplantation (LT) in patients with HCC in the United States. NASH/NAFLD is predicted to soon become the leading LT indication as a result of major advances in hepatitis C therapy and the increasing prevalence of obesity and associated conditions.[3]

Metabolic abnormalities including type 2 diabetes, obesity, hypertension, and hyperlipidemia are strongly associated with NALFD.[4] Hepatic steatosis is associated not only with liver-related mortality but also with an increased incidence of chronic kidney and cardiovascular diseases.[5] NALFD is becoming a major health burden and unfortunately, to date, no optimal therapy is available. The efficacy of a number of medications, including metformin, thiazolidinediones, and omega-3 fatty acids have been evaluated but unfortunately the results were suboptimal.[6],[7]

Parikh performed a prospective, single center, open-labeled, randomized trial of vitamin E or ursodeoxycholic acid (UDCA) in NAFLD patients. Diagnosis was made based on ultrasound findings and patients with high serum ALT and AST were enrolled in the study. Two hundred and fifty noncirrhotic, nondiabetic NAFLD patients were randomized to Vitamin E 400 mg twice a day or UDCA 300 mg twice a day for 52 weeks.[8] Only 42% of patients had a liver biopsy at the time of enrollment. All patients were advised lifestyle modification and were assessed by a dietician on a monthly basis to reinforce these recommendations. Seventy percent of NAFLD patients achieved the desired weight reduction (5%) by the end of the study. Normalization of transaminases (primary outcome) was achieved in 14% of NALFD patients who received vitamin E compared with 19% of patients who received UDCA. However, the percentage of ALT reduction (secondary outcome) was high in both groups (56% vs 63%, P value nonsignificant). At the end of the study, each group demonstrated a significant improvement in the NAFLD fibrosis score (NAS), but the result was not statistically significant between the vitamin E group and the UDCA group (44% vs 47%). Most patients tolerated both therapies with no significant side effects.[8]

Based on the study result, the authors stated that vitamin E and UDCA are equally effective in nondiabetic, noncirrhotic NAFLD patients along with life style modifications. However, such a statement should be interpreted cautiously in the light of existing evidence regarding vitamin E and UDCA in NAFLD. There is insufficient data regarding liver histology among patients who received UDCA or vitamin E in Parikh's study, and also there is a lack of evidence to assess the efficacy of both therapies by liver histology at the end of the study.

UDCA has been evaluated in multiple studies among NASH patients. There was a significant improvement in aminotransferases and steatosis in NALFD patients who were treated with UDCA.[9]

However, a large multicenter, randomized controlled trial showed that UDCA did not offer a histological benefit compared with placebo in NASH patients.[10] Therefore, it has not been recommended to treat NAFLD/NASH despite its safety profile. Likewise, UDCA in combination with vitamin E has been evaluated in a small sample size compared with UDCA alone or placebo.[11] Biochemical improvement was observed in the UDCA/vitamin E group compared with placebo or UDCA alone. Likewise, lower NAS and improvement in steotosis was observed only in the group who received combination therapy with UDCA and vitamin E. However, a larger study is required to assess the safety and efficacy of combined vitamin E and UDCA therapy, for NASH patients.

The efficacy of vitamin E has been evaluated in multiple studies among NAFLD/NASH patients. However, it is difficult to perform comparisons between these studies due to differences in vitamin E doses and utilizations of since unclear formulations. In the PIVENS study, 247 nondiabetic NASH patients were randomized to vitamin E 800 mg once daily or pioglitazone or placebo.[12] Reduction of transaminases were observed with vitamin E and pioglitazone compared with placebo. In addition, there was a significant improvement in hepatic steatosis and lobular inflammation in the vitamin E group, with no improvement in fibrosis scores.[12] Based on these results, vitamin E has been considered an option in the treatment of nondiabetic patients with biopsy-proven NASH. However, this needs to be balanced against potential risks of vitamin E including associations with increased risk of prostate cancer in men and increased all-cause mortality.[13],[14]

In conclusion, there is a significant health burden from NAFLD because of increasing prevalence of obesity worldwide. Life style modifications including diet and exercise ar firstline therapies; however, there has been limited success given the difficulty in achieving and sustaining weight loss.[15] Although UDCA and vitamin E may be options in selected patients, the evidence remains somewhat limited. There continues to be great interest in this field, and ongoing and future trials are anticipated to bring additional treatment options to this important patient group.

 
   References Top

1.
Marchesini G, Bugianesi E, Forlani G, Cerrelli F, Lenzi M, Manini R, et al. Nonalcoholic fatty liver, steatohepatitis, and the metabolic syndrome. Hepatology 2003;37:917-23.  Back to cited text no. 1
    
2.
Sanyal AJ. NASH: A global health problem. Hepatol Res 2011;41:670-4.  Back to cited text no. 2
    
3.
Wong RJ, Cheung R, Ahmed A. Nonalcoholic steatohepatitis is the most rapidly growing indication for liver transplantation in patients with hepatocellular carcinoma in the U.S. Hepatology 2014;59:2188-95.  Back to cited text no. 3
    
4.
Marchesini G, Brizi M, Bianchi G, Tomassetti S, Bugianesi E, Lenzi M, et al. Nonalcoholic fatty liver disease: A feature of the metabolic syndrome. Diabetes 2001;50:1844-50.  Back to cited text no. 4
    
5.
El Azeem HA, Khalek el SA, El-Akabawy H, Naeim H, Khalik HA, Alfifi AA. Association between nonalcoholic fatty liver disease and the incidence of cardiovascular and renal events. J Saudi Heart Assoc 2013;25:239-46.  Back to cited text no. 5
    
6.
Aithal GP, Thomas JA, Kaye PV, Lawson A, Ryder SD, Spendlove I, et al. Randomized, placebo-controlled trial of pioglitazone in nondiabetic subjects with nonalcoholic steatohepatitis. Gastroenterology 2008;135:1176-84.  Back to cited text no. 6
    
7.
Vernon G, Baranova A, Younossi ZM. Systematic review: The epidemiology and natural history of non-alcoholic fatty liver disease and non-alcoholic steatohepatitis in adults. Aliment Pharmacol Ther 2011;34:274-85.  Back to cited text no. 7
    
8.
Parikh P. An open label randomized control study to compare the efficacy of Vitamin E versus Ursodeoxycholic acid in non diabetic and non cirrhotic Indian NAFLD patients. Saudi J Gastroenterol 2016;3:192-7.  Back to cited text no. 8
    
9.
Ratziu V, de Ledinghen V, Oberti F, Mathurin P, Wartelle-Bladou C, Renou C, et al. A randomized controlled trial of high-dose ursodesoxycholic acid for nonalcoholic steatohepatitis. J Hepatol 2011;54:1011-9.  Back to cited text no. 9
    
10.
Lindor KD, Kowdley KV, Heathcote EJ, Harrison ME, Jorgensen R, Angulo P, et al. Ursodeoxycholic acid for treatment of nonalcoholic steatohepatitis: Results of a randomized trial. Hepatology 2004;39:770-8.  Back to cited text no. 10
    
11.
Dufour JF, Oneta CM, Gonvers JJ, Bihl F, Cerny A, Cereda JM, et al. Randomized placebo-controlled trial of ursodeoxycholic acid with Vitamin E in nonalcoholic steatohepatitis. Clin Gastroenterol Hepatol 2006;4:1537-43.  Back to cited text no. 11
    
12.
Sanyal AJ, Chalasani N, Kowdley KV, McCullough A, Diehl AM, Bass NM, et al. Pioglitazone, Vitamin E, or placebo for nonalcoholic steatohepatitis. N Engl J Med 2010;362:1675-85.  Back to cited text no. 12
    
13.
Klein EA, Thompson IM Jr., Tangen CM, Crowley JJ, Lucia MS, Goodman PJ, et al. Vitamin E and the risk of prostate cancer: The selenium and Vitamin E cancer prevention trial (SELECT). JAMA 2011;306:1549-56.  Back to cited text no. 13
    
14.
Bjelakovic G, Nikolova D, Gluud LL, Simonetti RG, Gluud C. Mortality in randomized trials of antioxidant supplements for primary and secondary prevention: Systematic review and meta-analysis. JAMA 2007;297:842-57.  Back to cited text no. 14
    
15.
Johnson NA, Sachinwalla T, Walton DW, Smith K, Armstrong A, Thompson MW, et al. Aerobic exercise training reduces hepatic and visceral lipids in obese individuals without weight loss. Hepatology 2009;50:1105-12.  Back to cited text no. 15
    

Top
Correspondence Address:
Melanie D Beaton
Department of Medicine, Division of Gastroenterology, Western University, LHSC-UH, Rm A10-223, 339 Windermere Road, London, ON N6A 5A5
Canada
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1319-3767.182462

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This article has been cited by
1 Non-alcoholic fatty liver disease: Epidemiology, pathophysiology and an update on the therapeutic approaches
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[Pubmed] | [DOI]



 

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