title: Iron deficiency anaemia can be improved after eradication of Helicobacter pylori.
abstract: BACKGROUND
  Recent guidelines on iron deficiency anaemia (IDA) have confirmed the aetiological role of Helicobacter pylori (H pylori), but the relationship still remains controversial.
  
  
  METHODS
  Starting in May 2009, searches of the following databases were undertaken: Medline (1966 to April 2009), Embase (1980 to April 2009), the Cochrane library (1800 to June 2008), Cochrane Central Register of Controlled Trials, Premedline, Healthstar, CBMdisc and the Chinese National Knowledge Infrastructure Database (January 1970 to April 2009). Changes in haemoglobin (Hb) concentrations and serum ferritin (SF) concentrations were recorded for intervention and control groups. The meta-analysis used random effect models and subgroup analyses were performed to explain heterogeneity.
  
  
  RESULTS
  Eight studies met the inclusion criteria. All studies were performed in Asia, an area with a high incidence of IDA and H pylori. The pooled analysis of eight studies showed that H pylori eradication therapy can improve IDA, since changes in Hb and SF concentrations in the intervention groups were higher than in controls. The weighted mean difference (WMD) of Hb was 12.88 g/l (95% CI 6.03 to 19.74 g/l, p<0.00001); the WMD of SF was 10.05 mug/l (95% CI 5.48 to 14.63 mug/l, p<0.00001).
  
  
  CONCLUSIONS
  H pylori eradication therapy combined with iron administration is more effective than iron administration alone for the treatment of IDA. Eradication therapy has different effects on adults and children. Bismuth based triple therapy has a better response in terms of increased Hb and SF concentrations than proton pump inhibitor (PPI) based triple therapy.
authors.affiliation: Department of Ultrasonic, Shanghai No.9 People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China. pxiong6@126.com.
authors.forename: Xiaolu
authors.initials: X
authors.lastname: Huang
authors.forename: Xinhua
authors.initials: X
authors.lastname: Qu
authors.forename: Weili
authors.initials: W
authors.lastname: Yan
authors.forename: Youliang
authors.initials: Y
authors.lastname: Huang
authors.forename: Mingci
authors.initials: M
authors.lastname: Cai
authors.forename: Bing
authors.initials: B
authors.lastname: Hu
authors.forename: Lianming
authors.initials: L
authors.lastname: Wu
authors.forename: Hai
authors.initials: H
authors.lastname: Lin
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Chen
authors.forename: Cuiying
authors.initials: C
authors.lastname: Zhu
authors.forename: Lungen
authors.initials: L
authors.lastname: Lu
authors.forename: Xu
authors.initials: X
authors.lastname: Sun
authors.forename: Lan
authors.initials: L
authors.lastname: Rong
authors.forename: Yibin
authors.initials: Y
authors.lastname: Jiang
authors.forename: Dayu
authors.initials: D
authors.lastname: Sun
authors.forename: Liang
authors.initials: L
authors.lastname: Zhong
authors.forename: Ping
authors.initials: P
authors.lastname: Xiong
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D018798:Anemia, Iron-Deficiency / Q000188:drug therapy*; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D001729:Bismuth / Q000627:therapeutic use; D002648:Child; D004359:Drug Therapy, Combination; D016481:Helicobacter Infections / Q000188:drug therapy*; D016480:Helicobacter pylori; D006801:Humans; D008875:Middle Aged; D054328:Proton Pump Inhibitors / Q000627:therapeutic use; D016032:Randomized Controlled Trials as Topic; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D000900:Anti-Bacterial Agents; D054328:Proton Pump Inhibitors; D001729:Bismuth
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