title: Dietary squid ink polysaccharides ameliorated the intestinal microflora dysfunction in mice undergoing chemotherapy.
abstract: Gastrointestinal mucositis and infection by chemotherapy treatment are associated with alteration of intestinal microflora and bacterial translocation due to the potential damage induced by anti-cancer drugs on the intestinal barrier and microbiota homeostasis. This study aimed to investigate the protective effect of dietary polysaccharides on chemotherapy induced intestinal microflora dysfunction. In the current contribution, with a mouse model intraperitoneally injected with 50 mg kg(-1) of cyclophosphamide (Cy) for 2 days, we revealed that polysaccharides from the ink of Ommastrephes bartrami (OBP) altered the intestinal microflora composition. OBP retarded the excessive growth of intestinal bacteria induced by cyclophosphamide, based on 16S rRNA gene (16S rDNA) quantification. The clone libraries of intestinal bacteria 16S rDNA were used to decipher the difference in bacterial community structures in different groups of mice. Followed by RFLP evaluation and OTU abundance analysis, they imply that OBP changed the intestinal microflora composition, in which the quantity of probiotic Bifidobacterium got up-regulated but Bacteroidetes decreased in mice undergoing chemotherapy. Our results may have important implications for OBP as a functional food component or nutrient against chemotherapy induced intestinal injury and potential pathogenic intestinal disorders involving inflammation and infection.
authors.affiliation: College of Food Science and Engineering, Ocean University of China, Yushan Road 5th, Qingdao, Shandong province, P.R. China266003. tangqingjuan@ouc.edu.cn xuech@ouc.edu.cn.
authors.forename: Qingjuan
authors.initials: Q
authors.lastname: Tang
authors.forename: Tao
authors.initials: T
authors.lastname: Zuo
authors.forename: Shangyun
authors.initials: S
authors.lastname: Lu
authors.forename: Juan
authors.initials: J
authors.lastname: Wu
authors.forename: Jianghua
authors.initials: J
authors.lastname: Wang
authors.forename: Rong
authors.initials: R
authors.lastname: Zheng
authors.forename: Shiguo
authors.initials: S
authors.lastname: Chen
authors.forename: Changhu
authors.initials: C
authors.lastname: Xue
mesh_terms: D000818:Animals; D041963:Bacteroidetes / Q000187:drug effects*; D001644:Bifidobacterium / Q000254:growth & development*; D003001:Cloning, Molecular; D004269:DNA, Bacterial / Q000235:genetics; D049832:Decapodiformes / Q000737:chemistry*; D005243:Feces / Q000382:microbiology; D007422:Intestines / Q000187:drug effects / Q000382:microbiology*; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D012150:Polymorphism, Restriction Fragment Length; D011134:Polysaccharides / Q000008:administration & dosage*; D019936:Probiotics / Q000008:administration & dosage; D012336:RNA, Ribosomal, 16S / Q000235:genetics
chemical_list: D004269:DNA, Bacterial; D011134:Polysaccharides; D012336:RNA, Ribosomal, 16S