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Efficacy of combining pentoxiphylline and vitamin E versus vitamin E alone in non-alcoholic steatohepatitis- A randomized pilot study.

Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology
February 1, 2021
Chandan Kumar Kedarisetty et al. (7 authors)
Journal ArticleRandomized Controlled TrialHuman StudyClinical
Study Details

Study Goal

The researchers aimed to evaluate the efficacy of a combination of pentoxifylline (PTX) and vitamin E (VE) compared to VE alone in reducing alanine aminotransferase (ALT) levels and improving fibrosis in patients with non-alcoholic steatohepatitis (NASH).

Results Summary

Both treatment groups showed similar reductions in ALT levels, but the PTX and VE combination (PTVE) group demonstrated greater reductions in fasting insulin, HOMA-IR, and TNFα levels, as well as significant fibrosis regression compared to the VE-only group.

Population

Patients with histologically proven NASH.

Effective Dosage

PTX 400 mg thrice daily and VE 400 IU twice daily (PTVE group); VE alone (400 IU twice daily, VE group).

Duration

12 months.

Interactions

None mentioned.

Extracted Claims (17)
InterventionDirectionEndpointPopulationDosageImpactClaim #
Vitamin E (VE)
decrease
NAFLD activity score (NAS)
NASH patients
-
has shown improvement
#1
Vitamin E (VE)
no change
fibrosis
NASH patients
-
not
#2
Pentoxiphylline (PTX)
decrease
hepatic inflammation
NASH patients
-
has been reported to reduce
#3
Pentoxiphylline (PTX)
decrease
fibrosis
NASH patients
-
has been reported to reduce
#4
strict diet and lifestyle modification regimen
decrease
body mass index
histologically proven patients with NASH
-
similar reduction
#5
strict diet and lifestyle modification regimen
decrease
waist circumference
histologically proven patients with NASH
-
similar reduction
#6
PTX and VE combination (PTVE)
decrease
alanine aminotransferase (ALT) levels
histologically proven patients with NASH
-
similar reduction
#7
VE alone
decrease
alanine aminotransferase (ALT) levels
histologically proven patients with NASH
-
similar reduction
#8
PTX and VE combination (PTVE)
decrease
fasting insulin levels
histologically proven patients with NASH
-
greater reduction
#9
PTX and VE combination (PTVE)
decrease
homeostatic model assessment of insulin resistance (HOMA-IR)
histologically proven patients with NASH
-
greater reduction
#10
PTX and VE combination (PTVE)
decrease
Tumor necrosis factor alpha (TNFα) levels
histologically proven patients with NASH
-
significantly lower
#11
PTX and VE combination (PTVE)
decrease
NAS score
histologically proven patients with NASH
-
no difference in reduction
#12
VE alone
decrease
NAS score
histologically proven patients with NASH
-
no difference in reduction
#13
PTX and VE combination (PTVE)
decrease
fibrosis
histologically proven patients with NASH
-
significant fibrosis regression
#14
combination of PTX and VE
decrease
fibrosis regression
NASH patients
-
greater efficacy
#15
combination of PTX and VE
increase
metabolic homeostasis
NASH patients
-
better metabolic homeostasis
#16
combination of PTX and VE
decrease
pro-inflammatory status
NASH patients
-
amelioration
#17
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.

Medical Subject Headings (MeSH)
AdolescentAdultAlanine TransaminaseAntioxidantsDrug Therapy, CombinationFemaleHumansLiverMaleMiddle AgedNon-alcoholic Fatty Liver DiseasePentoxifyllinePilot ProjectsProspective StudiesTreatment OutcomeTumor Necrosis Factor InhibitorsVitamin EYoung Adult
Study Links
Quality Scores
SafetyNot Assessed
Efficacy75/10
Quality85/10
Citation Metrics
Total Citations13
Citations/Year3.3
Relative Citation Ratio1.16
NIH Percentile55.8%
Research Impact Scores
APT Score0.50
Weight Score2.61
Normalized Score0.67
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