[The role of Helicobacter pylori infection in children with chronic immune thrombocytopenic purpura].
Helicobacter pylori infection has been associated with immune thrombocytopenic purpura in adults, however, the few studies concerning this issue showed conflicting results in the paediatric field. Therefore, authors prospectively investigated the incidence of Helicobacter pylori infection and the effect of Helicobacter pylori eradication on platelet count recovery in children with immune thrombocytopenic purpura.


METHODS
The study included 27 children with immune thrombocytopenic purpura (13 boys and 14 girls) with a median age of 8.2 years (range, 18 months-18 years). 38 healthy children (controls) were also enrolled (20 boys, 18 girls, median age, 9.6 years, range, 4-18 years). Helicobacter pylori infection was diagnosed using 13 C urea breath test. Eradication was assessed at 6 weeks following the end of the treatment by 13 C urea breath.


RESULTS
2 children out of 27 patients with immune thrombocytopenic purpura proved to be positive for Helicobacter pylori infection (7.7%) and were treated with combination therapy. Controls showed similar rate of Helicobacter pylori infection (3/38, 7.9%) in comparison to those with immune thrombocytopenic purpura. In the follow-up period (mean, 10 months, range, 6-14 months) platelets did not show any improvement in infected children following the eradication treatment and were identical to those of the uninfected patients. Eradication was successful in the 2 Helicobacter pylori infected patients with immune thrombocytopenic purpura.


CONCLUSIONS
The results do not suggest a pathogenetic role of Helicobacter pylori infection in the etiology of immune thrombocytopenic purpura. Screening of Helicobacter pylori infection among paediatric patients with immune thrombocytopenic purpura is not recommended.
Semmelweis Egyetem, Altalános Orvostudományi Kar, I. Gyermekgyógyászati Klinika, Budapest. vergab@gyer1.sote.hu
Gábor
G
Veres
István
I
Karóczkai
Hedvig
H
Bodánszky
Anikó
A
Marosi
Edina
E
Magyarossi
Antal
A
Dezsofi
András
A
Arató
D000293:Adolescent; D000907:Antibodies, Bacterial / Q000097:blood; D000942:Antigens, Bacterial / Q000097:blood; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D004359:Drug Therapy, Combination; D005260:Female; D016481:Helicobacter Infections / Q000150:complications* / Q000188:drug therapy*; D016480:Helicobacter pylori / Q000276:immunology; D006801:Humans; D007223:Infant; D008297:Male; D010976:Platelet Count; D011446:Prospective Studies; D016553:Purpura, Thrombocytopenic, Idiopathic / Q000276:immunology / Q000382:microbiology*; D013997:Time Factors
D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial