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Published on: March 14, 2017
Additional effect of low iron diet on iron reduction therapy by phlebotomy for chronic hepatitis C
Fumiaki Kimura1, Hisao Hayashi, Motoyoshi Yano
1Department of Internal Medicine, Tamano-Municipal Hospital, Tamano City, Okayama, Japan. f-kimura@po1.oninet.ne.jp
Insights
Combining phlebotomy with a low iron diet significantly improves liver enzyme levels in chronic hepatitis C patients. This combined approach enhances iron reduction therapy beyond phlebotomy alone.
Area of Science:
- Hepatology
- Gastroenterology
- Internal Medicine
Background:
- Iron-induced oxidative stress is a key factor in chronic hepatitis C pathogenesis.
- Phlebotomy and low-iron diets individually improve transaminase levels in patients.
- The combined efficacy of these treatments requires further investigation.
Purpose of the Study:
- To evaluate the cooperative effects of phlebotomy and a low iron diet in treating chronic hepatitis C.
- To determine if a low iron diet enhances the efficacy of phlebotomy in iron reduction therapy.
Main Methods:
- A pilot study involving 21 chronic hepatitis C patients.
- Group A (10 patients): phlebotomy alone.
- Group B (11 patients): phlebotomy combined with a low iron diet (≤8 mg/day).
- Phlebotomy continued until serum ferritin reached 10 ng/mL in both groups.
Main Results:
- Both groups showed significant improvement in serum alanine aminotransferase (ALT) levels.
- Group B (low iron diet + phlebotomy) exhibited significantly lower post-treatment ALT levels compared to Group A (phlebotomy alone).
- Dietary iron intake in Group B was successfully reduced from 17.6 to 8.2 mg/day.
Conclusions:
- Phlebotomy alone is insufficient to fully mitigate iron-induced oxidative stress in chronic hepatitis C.
- A low iron diet provides an additive benefit to phlebotomy in iron reduction therapy.
- The combination therapy offers superior improvement in liver enzyme levels for chronic hepatitis C patients.
Background/Aims:
Iron-induced oxidative stress plays an important role in the pathogenesis of chronic hepatitis C. Both phlebotomy for removing body iron stores and low iron diet for minimizing portal iron supply to the liver have been shown to improve serum transaminase levels in patients with the disease. However, the cooperative effects of phlebotomy and low iron diet have not yet been elucidated in detail.
Methodology:
A pilot study was undertaken to investigate whether a low iron diet could improve the efficacy of phlebotomy in iron reduction therapy. Of 21 patients diagnosed with chronic hepatitis C, 10 patients were treated with phlebotomy alone (group A) while 11 patients were treated with a low iron plus phlebotomy (group B). Phlebotomy was repeated biweekly until serum ferritin levels reached 10 ng/mL in both A and B groups. In addition, a low iron diet (iron intake of 8 mg/day or less) was recommended for group B, followed by estimation of iron intake from daily diet records.
Results:
Serum alanine aminotransferase levels were significantly improved from 106+/-30 to 68+/-22 IU/L (p<0.005, paired t-test) in group A and from 100+/-33 to 46+/-10 IU/L (p<0.002, paired t-test) in group B. The enzyme levels after treatment were significantly higher in group A (p<0.02, non-paired t-test), which showed a higher upward distribution of the enzyme activity. The estimated dietary iron intake in group B was reduced from 17.6+/-6.1 to 8.2+/-3.7 mg/day.
Conclusions:
These findings suggest that phlebotomy alone does not completely remove iron-induced oxidative stress and a low iron diet induces an additional effect in iron reduction therapy for chronic hepatitis C.
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