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01 February 2012

Lack of association of conjunctival MALT lymphoma with Chlamydiae or Helicobacter pylori in a cohort of Chinese patients

Ji-Ping CaiABCDEF, Jin-Wei ChengABCDEF, Xiao-Ye MaBCD, Yu-Zhen LiBCD, You LiBCD, Xiao HuangBCD, Rui-Li WeiAEFG

DOI: 10.12659/MSM.882462

Med Sci Monit 2012; 18(2): BR84-88

Abstract

Background: This study was conducted to detect microbial pathogens in conjunctival mucosa-associated lymphoid tissue (MALT) lymphoma specimens in an attempt to determine possible associations between conjunctival MALT lymphoma and microbial infections.
Material/Methods: Using PCR technique, freshly obtained tumor specimens from 16 cases of conjunctival MALT lymphoma, as confirmed by postoperative pathology, were analyzed for DNA of Chlamydia psittaci (C. psittaci), Chlamydia trachomatis (C. trachomatis), Chlamydia pneumoniae (C. pneumoniae) and Helicobacter pylori (H. pylori). Synthetic C. psittaci, C. trachomatis, C. pneumoniae and H. pylori DNA were used as positive control, and blank plasmid DNA as negative control.
Results: Electrophoresis showed that no bands corresponding to the positive control were observed in the specimens, indicating that no DNA of the 4 microorganisms was detected in the specimens of the 16 cases of conjunctival MALT lymphoma.
Conclusions: The PCR technique was able to detect the positive control quickly and accurately, but the results of PCR in analyzing the 16 specimens were negative, indicating that there is no association between conjunctival MALT lymphoma and the 4 microorganisms in Chinese patients.

Keywords: Helicobacter pylori - isolation & purification, DNA, Bacterial - analysis, DNA Primers, Conjunctival Neoplasms - microbiology, Cohort Studies, Chlamydia - isolation & purification, Base Sequence, Lymphoma, B-Cell, Marginal Zone - microbiology, Polymerase Chain Reaction

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750