Helicobacter pylori infects over half of the world's population and thought to be a leading cause of chronic gastritis, peptic ulcer, and gastric cancer. Campylobacterjejuni is another enteric and gastric bacteria which is the most common cause of bacterial diarrhoea. Both of these microbes adhere to mucosa by binding blood group antigen-related or other carbohydrates expressed on epithelial cells. Breast feeding protects infants against these bacterial infections, which was proven to be a consequence of the presence of large quantities of antigen oligosaccharides in human milk. Multivalent oligosaccharides were synthesized with rigid and flexible scaffolds designed to present the carbohydrates diversely. These compounds were evaluated on purified chicken large intestine mucin. Some of the compounds inhibit the binding of bacteria to the mucin. These multivalent oligosaccharides are promising prophylactic and therapeutic antimicrobial agents for gastric and intestinal diseases.
幽门螺杆菌感染全球超过一半的人口,被认为是慢性胃炎、消化性溃疡和胃癌的主要原因之一。弯曲菌属是另一种肠道和胃部细菌,是细菌性腹泻最常见的原因。这两种微
生物通过与上皮细胞表达的血型抗原相关或其他
碳水化合物结合,附着在粘膜上。母乳喂养可以保护婴儿免受这些细菌感染,这是因为人乳中存在大量抗原
寡糖。多价
寡糖通过设计刚性和灵活的支架合成,以多样化呈现
碳水化合物。这些化合物在纯化的鸡大肠粘膜上进行评估,其中一些化合物可以抑制细菌与粘膜的结合。这些多价
寡糖是胃肠道疾病的有希望的预防和治疗抗菌剂。