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Braz. oral res ; 20(3): 191-195, Jul.-Sept. 2006. tab
Article in English, Portuguese | LILACS | ID: lil-435805

ABSTRACT

This study was designed to investigate the impact of haematopoietic stem cell transplantation (HSCT) on Helicobacter pylori colonization of the oral mucosa by nested polymerase chain reaction (nested-PCR). Forty six consecutive patients submitted to HSCT and 46 healthy volunteers were included in the study. Oral swabs were taken from the oral mucosa of the patients and control group. The medical records of the patients were reviewed and the following information was retrieved: gender and age of the patient, donor gender, primary disease, stem cell source (bone marrow or blood stem cells), leukocyte, neutrophil and platelet counts, and chronic graft versus host disease (cGVHD) of salivary glands. The results demonstrated an increased frequency of H. pylori in the oral mucosa of HSCT patients compared to controls (rho = 0.002). The presence of H. pylori in the oral mucosa was not related to the severity of cGVHD. The median counts of platelet/mm³, leukocytes/mm³ and neutrophils/mm³ in the group of HSCT patients positive for H. pylori were not statistically different from those of the patients negative for it. In conclusion, the present study shows increased frequency of H. pylori in the oral mucosa of HSCT patients compared to non-transplanted healthy volunteers.


O objetivo do estudo é investigar o impacto do transplante de células-tronco hematopoiéticas (TCTH) na colonização da mucosa bucal pela Helicobacter pylori através do "nested-PCR". Quarenta e seis pacientes submetidos ao TCTH e 46 indivíduos saudáveis foram incluídos no estudo. Raspados de mucosa bucal foram realizados nos pacientes do grupo de estudo e grupo controle. Os dados médicos dos pacientes foram revisados e as seguintes informações foram coletadas: gênero e idade do paciente, gênero do doador, doença primária, fonte de células-tronco (medula óssea ou células-tronco sanguíneas), número de leucócitos, neutrófilos e plaquetas, doença do enxerto contra o hospedeiro crônica (DECHc) de glândulas salivares. Os resultados demonstram aumento na freqüência de H. pylori na mucosa bucal de pacientes submetidos ao TCTH comparado com grupo controle (r = 0.002). A presença da H. pylori na mucosa bucal não teve relação com a severidade da DECHc. As medianas de número de plaquetas/mm³, leucócitos/mm³ e neutrófilos/mm³ no grupo de pacientes TCTH positivos para H. pylori não foram estatisticamente diferentes das medianas dos pacientes negativos. Concluindo, o presente estudo mostra um aumento da freqüência da H. pylori na mucosa bucal de pacientes submetidos ao TCTH quando comparada com a de um grupo de voluntários não transplantados saudáveis.


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Middle Aged , Graft vs Host Disease/microbiology , Helicobacter Infections/complications , Helicobacter pylori/isolation & purification , Mouth Mucosa/microbiology , Carrier State , Case-Control Studies , Electrophoresis, Agar Gel , Gastrointestinal Diseases/microbiology , Gastrointestinal Diseases/pathology , Graft vs Host Disease/immunology , Graft vs Host Disease/pathology , Helicobacter pylori/genetics , Hematopoietic Stem Cell Transplantation/adverse effects , Hematopoietic Stem Cell Transplantation/standards , Immunocompromised Host , Mouth Mucosa/pathology , Polymerase Chain Reaction , Risk Factors , Statistics, Nonparametric , Tissue Donors
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