Incidences of Helicobacter infection in pigs and tracing occupational hazard in pig farmers

IF 2 3区 农林科学 Q4 IMMUNOLOGY
Seema Rani Pegu , Joyshikh Sonowal , Swaraj Rajkhowa , Pranab Jyoti Das , Gyanendra Singh Sengar , Rajib Deb , Manjisa Choudhury , Naba Jyoti Deka , Souvik Paul , Juwar Doley , Dilip Kumar Sarma , Samir Das , N.H. Mohan , Rajendran Thomas , Vivek Kumar Gupta
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Abstract

Helicobacter species (spp.) is a gram-negative spiral-shaped motile bacterium that causes gastritis in pigs and also colonizes in the human stomach. The present study assessed the prevalence of Helicobacter spp. in pig gastric mucosa and the stool of pig farmers in Assam, India. A total of 403 stomach samples from pig slaughter points, 74 necropsy samples of pigs from pig farms, and 97 stool samples from pig farmers were collected. Among the pig stomach samples, 43 (20.09%) of those with gastritis showed the presence of Gram-negative, spiral-shaped organisms, while only 3.04% of stomach samples without lesions had these organisms. Scanning Electron Microscopy (SEM) of urease-positive stomach samples revealed tightly coiled Helicobacter bacteria in the mucus lining. Histopathological examination showed chronic gastritis with hemorrhagic necrosis, leucocytic infiltration, and lymphoid aggregates. PCR confirmed the presence of Helicobacter suis in 19.63% of pig stomach samples and 2.08% of pig farmer stool samples. Additionally, 3.12% of the stool samples from pig farmers were positive for Helicobacter pylori. Phylogenetic analysis revealed distinct clusters of Helicobacter suis with other Helicobacter spp. These findings highlight the prevalence of Helicobacter in both pig gastric mucosa and pig farmer stool. The findings highlight the need for improved sanitation and hygiene practices among pig farmers to minimize the risk of Helicobacter infection in humans.

猪的螺旋杆菌感染率和养猪户的职业危害追踪
螺旋杆菌(spp.)是一种革兰氏阴性螺旋形运动杆菌,可导致猪胃炎,也可在人胃中定植。本研究评估了猪胃粘膜和印度阿萨姆邦养猪户粪便中螺旋杆菌的流行情况。本研究共收集了 403 份来自生猪屠宰点的胃部样本、74 份来自养猪场的生猪尸体解剖样本和 97 份来自养猪户的粪便样本。在猪胃样本中,43 个(20.09%)有胃炎的样本显示存在革兰氏阴性螺旋形微生物,而只有 3.04% 没有病变的胃样本存在这些微生物。尿素酶阳性胃样本的扫描电子显微镜(SEM)显示,粘液衬里中有紧密盘绕的螺旋杆菌。组织病理学检查显示,慢性胃炎伴有出血坏死、白细胞浸润和淋巴聚集。聚合酶链式反应证实,19.63% 的猪胃样本和 2.08% 的猪场粪便样本中存在猪螺旋杆菌。此外,3.12% 的养猪户粪便样本中幽门螺旋杆菌呈阳性。这些发现突出表明了猪胃粘膜和养猪户粪便中幽门螺旋杆菌的普遍性。研究结果突出表明,有必要改善养猪户的环境卫生和个人卫生习惯,以尽量减少人类感染螺旋杆菌的风险。
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来源期刊
CiteScore
4.60
自引率
0.00%
发文量
102
审稿时长
40 days
期刊介绍: Comparative Immunology, Microbiology & Infectious Diseases aims to respond to the concept of "One Medicine" and to provide a venue for scientific exchange. Based on the concept of "Comparative Medicine" interdisciplinary cooperation between specialists in human and animal medicine is of mutual interest and benefit. Therefore, there is need to combine the respective interest of physicians, veterinarians and other health professionals for comparative studies relevant to either human or animal medicine . The journal is open to subjects of common interest related to the immunology, immunopathology, microbiology, parasitology and epidemiology of human and animal infectious diseases, especially zoonotic infections, and animal models of human infectious diseases. The role of environmental factors in disease emergence is emphasized. CIMID is mainly focusing on applied veterinary and human medicine rather than on fundamental experimental research.
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