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  • Title: High prevalence of Helicobacter pylori infection and monoclonal gammopathy of undetermined significance in patients with chronic idiopathic neutropenia.
    Author: Papadaki HA, Pontikoglou C, Stavroulaki E, Minadakis G, Eliopoulos DA, Pyrovolaki K, Skordilis P, Eliopoulos GD.
    Journal: Ann Hematol; 2005 May; 84(5):317-20. PubMed ID: 15731921.
    Abstract:
    The prevalence of Helicobacter pylori infection was evaluated in 120 patients with chronic idiopathic neutropenia (CIN), 8 patients with monoclonal gammopathy of undetermined significance (MGUS) associated with CIN, and 74 age- and sex-matched normal volunteers, all derived from the same geographical area. The purpose of the study was to investigate the possible causal relationships of H. pylori infection with the development of MGUS in CIN patients. We found that the prevalence of H. pylori infection was elevated to 69.2% in the group of CIN patients, 100% in the group of patients with CIN-associated MGUS, and 32.4% in the group of control subjects. No statistically significant difference, however, was found in the prevalence of H. pylori infection between CIN patients with concomitant MGUS and CIN patients without MGUS, no resolution of the gammopathy after eradication of the bacterium, no significant rise in the titers of serum anti-H. pylori antibodies, and no formation of an abnormal precipitation line in immunoelectrophoresis using a saline extract of NCTC11367 H. pylori reference strain as antigen. We concluded that there is no evidence that H. pylori infection is the cause of MGUS in CIN patients.
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