World journal of gastroenterology · 2006
ABH and Lewis antigen distributions in blood, saliva and gastric mucosa and H pylori infection in gastric ulcer patients.
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Martins Luisa Caricio, de Oliveira Corvelo Tereza Cristina, Oti Henrique Takeshi, do Socorro Pompeu Loiola Rosane, Aguiar Delia Cristina Figueira, dos Santos Barile Katarine Antonia, do Amaral Renata Kelly Costa, Barbosa Hivana Patricia Melo, Fecury Amanda Alves, de Souza Juciclayton Tavares
Аннотация
AIM: To investigate the ABH and Lewis antigen expression in erythrocytes, saliva and gastric epithelium, as well as the association between H pylori and the presence of gastric epithelial lesions.
METHODS: The distribution of ABH and Lewis blood group antigens in erythrocytes, saliva and gastric mucosa of H pylori-infected gastric ulcer patients was analyzed. Forty-two patients with gastric ulcer were studied, and fifty healthy individuals were used as control group. The blood group antigens were determined by direct hemagglutination, dot-ELISA and immunohistochemical methods in erythrocytes, saliva and gastric mucosa specimens, respectively. Diagnosis for H pylori infection was performed by conventional optical microscopy and ELISA.
RESULTS: A higher seroprevalence of IgG H pylori specific antibodies was observed in gastric ulcer patients (90%) compared to the control group (60%). We observed a significant increase of phenotypes O, A2 and Lewis b in H pylori-infected patients. The expression of these antigens had progressive alterations in areas of ulcerous lesions and intestinal metaplasia.
CONCLUSION: ABH and Lewis blood group antigens are a good indicator for cellular alterations in the gastric epithelium.
METHODS: The distribution of ABH and Lewis blood group antigens in erythrocytes, saliva and gastric mucosa of H pylori-infected gastric ulcer patients was analyzed. Forty-two patients with gastric ulcer were studied, and fifty healthy individuals were used as control group. The blood group antigens were determined by direct hemagglutination, dot-ELISA and immunohistochemical methods in erythrocytes, saliva and gastric mucosa specimens, respectively. Diagnosis for H pylori infection was performed by conventional optical microscopy and ELISA.
RESULTS: A higher seroprevalence of IgG H pylori specific antibodies was observed in gastric ulcer patients (90%) compared to the control group (60%). We observed a significant increase of phenotypes O, A2 and Lewis b in H pylori-infected patients. The expression of these antigens had progressive alterations in areas of ulcerous lesions and intestinal metaplasia.
CONCLUSION: ABH and Lewis blood group antigens are a good indicator for cellular alterations in the gastric epithelium.
Предметные рубрики MeSH
ABO Blood-Group SystemAdultAgedAged, 80 and overAntigens, BacterialBacterial ProteinsEnzyme-Linked Immunosorbent AssayErythrocytesFemaleGastric MucosaHelicobacter InfectionsHelicobacter pyloriHumansImmunoglobulin GImmunohistochemistryLewis Blood Group AntigensMaleMiddle AgedPhenotypeSalivaStomach Ulcer