背景:世界上最普遍的胃感染是由幽门螺杆菌引起的(H.幽门螺杆菌)。几个致病性基因,包括caga,vaca,babA2,dupA,iceA,和oipA,与胃肠道疾病如消化性溃疡和胃癌的风险增加有关。这项研究旨在确定厄瓜多尔人群中不同幽门螺杆菌基因型的患病率及其在胃肠道疾病发展中的风险。
方法:对基多卡尔德隆医院的225名患者进行的横断面研究,厄瓜多尔,进行了。运行终点PCR以确定16SrRNA的存在,caga,vacA(m1),vacA(s1),babA2,dupA,iceA1和oipA毒力基因。卡方检验,利用比值比(OR)和95%置信区间(CI)进行统计分析.
结果:H.62.7%的人存在幽门螺杆菌感染。22.2%的患者出现消化性溃疡,3.6%的患者出现恶性病变。oipA基因(93.6%),vacA(s1)(70.9%),babA2(70.2%)最为普遍。在31.2%和22.7%的病例中发现了cagA/vacA(s1m1)和cagA/oipA(s1m1)的组合,分别。急性炎症与cagA基因有显著相关性(OR=4.9695%CI:1.1-22.41),babA2(OR=2.7895%CI:1.06-7.3),和cagA/oipA组合(OR=4.78,95%CI:1.06-21.62)。卵泡增生与iceA1相关(OR=3.13;95%CI:1.2-8.16),babA2(OR=2.56;95%CI:1.14-5.77),cagA(OR=2.19;95%CI:1.06-4.52),和cagA/oipA组合(OR=2.32,95%CI:1.12-4.84)。vacA(m1)和vacA(s1m1)基因与胃肠上皮化生相关(OR=2.7195%CI:1.17-6.29)(OR=2.3395%CI:1.03-5.24)。最后,我们发现cagA/vacA(s1m1)基因组合增加了十二指肠溃疡发展的风险(OR=2.89,95%CI1.10-7.58)。
结论:本研究通过提供关于幽门螺杆菌感染的基因型信息做出了重要贡献。几个幽门螺杆菌基因的存在与厄瓜多尔人群胃肠道疾病的发作有关。
BACKGROUND: The most prevalent stomach infection in the world is caused by Helicobacter pylori (H. pylori). Several pathogenicity genes, including cagA, vacA, babA2, dupA, iceA, and oipA, are associated with an increased risk of gastrointestinal disease such as peptic ulcer and stomach cancer. This research aims to determine the prevalence of different H. pylori genotypes and correlate their risk in the development of gastrointestinal diseases in the Ecuadorian population.
METHODS: A cross-sectional research of 225 patients at the Calderón Hospital in Quito, Ecuador, was conducted. End point PCRs were run to determine the presence of 16S rRNA, cagA, vacA (m1), vacA (s1), babA2, dupA, iceA1, and oipA virulence genes. Chi-square test, odds ratios (OR) and 95% confidence intervals (CI) were utilized for the statistical analysis.
RESULTS: H. pylori infection was present in 62.7% of people. Peptic ulcers were seen in 22.2% and malignant lesions in 3.6% of patients. Genes oipA (93.6%), vacA (s1) (70.9%), and babA2 (70.2%) were the most prevalent. cagA/vacA (s1m1) and cagA/oipA (s1m1) combinations were found in 31.2% and 22.7% of the cases, respectively. Acute inflammation has a significant correlation with the genes cagA (OR = 4.96 95% CI: 1.1-22.41), babA2 (OR = 2.78 95% CI: 1.06-7.3), and the cagA/oipA combination (OR = 4.78, 95% CI: 1.06-21.62). Follicular hyperplasia was associated with iceA1 (OR = 3.13; 95% CI: 1.2-8.16), babA2 (OR = 2.56; 95% CI: 1.14-5.77), cagA (OR = 2.19; 95% CI: 1.06-4.52), and the cagA/oipA combination (OR = 2.32, 95% CI: 1.12-4.84). The vacA (m1) and vacA (s1m1) genes were associated with gastric intestinal metaplasia (OR = 2.71 95% CI: 1.17-6.29) (OR = 2.33 95% CI: 1.03-5.24). Finally, we showed that cagA/vacA (s1m1) gene combination increased the risk of duodenal ulcer development (OR = 2.89, 95% CI 1.10-7.58).
CONCLUSIONS: This
study makes a significant contribution by offering genotypic information regarding H. pylori infection. The presence of several H. pylori genes was associated with the onset of gastrointestinal illness in the Ecuadorian population.