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Gao X, Miao R, Zhu Y, Lin C, Yang X, Jia R, Linghan K, Wan C, Deng J. A new insight into acute lymphoblastic leukemia in children: influences of changed intestinal microfloras. BMC Pediatr 2020; 20:290. [PMID: 32522199 PMCID: PMC7646195 DOI: 10.1186/s12887-020-02192-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 06/02/2020] [Indexed: 01/24/2023] Open
Abstract
Background Previous studies have shown that changes in intestinal microfloras are associated with both gastrointestinal (GI) and non-GI tumors. It is not clear whether there is an association between GI microflora changes and hematological malignancies. Methods In the current study, we used 16S rDNA gene sequencing techniques to profile the GI microbiome in children with lymphoblastic leukemia (ALL, n = 18) and matched healthy control (n = 18). Using multiple specialized software [Heatmap, Principal coordinates analysis (PCoA), Claster and Metastates], we analyzed the sequencing data for microfloral species classification, abundance and diversity. Results A total of 27 genera between the ALL and control groups (FDR ≤ 0.05 and/or P ≤ 0.05) showed significantly different abundance between ALL patients and healthy controls: 12 of them were predominant in healthy group and other 15 species were significantly higher in ALL group. In addition, we compared the abundance and diversity of microfloral species in ALL patients prior to and during remission stage after chemotherapy, and no significant difference was detected. Conclusions Compared to healthy controls, ALL patient showed significant changes of GI microfloras. Further explorations of the intestinal micro-ecology in ALL patients may provide important information to understand relationship between microfloras and ALL.
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Affiliation(s)
- Xiaolin Gao
- Department of Paediatrics, Western Women's and Children's Research Institute, West China University Second Hospital, Sichuan University, Number 20, 3rd Section, People's South Road, Chengdu, 610041, Sichuan Province, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, (Sichuan University), Ministry of Education, Chengdu, 610041, Sichuan, China
| | - Ruixue Miao
- Department of Paediatrics, Western Women's and Children's Research Institute, West China University Second Hospital, Sichuan University, Number 20, 3rd Section, People's South Road, Chengdu, 610041, Sichuan Province, China
| | - Yiping Zhu
- Department of Paediatrics, Western Women's and Children's Research Institute, West China University Second Hospital, Sichuan University, Number 20, 3rd Section, People's South Road, Chengdu, 610041, Sichuan Province, China
| | - Chao Lin
- Department of Paediatrics, Western Women's and Children's Research Institute, West China University Second Hospital, Sichuan University, Number 20, 3rd Section, People's South Road, Chengdu, 610041, Sichuan Province, China
| | - Xue Yang
- Department of Paediatrics, Western Women's and Children's Research Institute, West China University Second Hospital, Sichuan University, Number 20, 3rd Section, People's South Road, Chengdu, 610041, Sichuan Province, China
| | - Ruizhen Jia
- Open Laboratory, West China Institute for Women's and Children's Health, Chengdu, 610041, Sichuan, China
| | - Kuang Linghan
- Group of bacterial biology, Department of Laboratory Medicine, Sichuan university west China second hospital, Chengdu, 610041, Sichuan, China
| | - Chaomin Wan
- Department of Paediatrics, Western Women's and Children's Research Institute, West China University Second Hospital, Sichuan University, Number 20, 3rd Section, People's South Road, Chengdu, 610041, Sichuan Province, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, (Sichuan University), Ministry of Education, Chengdu, 610041, Sichuan, China
| | - Jianjun Deng
- Department of Paediatrics, Western Women's and Children's Research Institute, West China University Second Hospital, Sichuan University, Number 20, 3rd Section, People's South Road, Chengdu, 610041, Sichuan Province, China. .,Key Laboratory of Birth Defects and Related Diseases of Women and Children, (Sichuan University), Ministry of Education, Chengdu, 610041, Sichuan, China.
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Alterations in intestinal microbiota of colorectal cancer patients receiving radical surgery combined with adjuvant CapeOx therapy. SCIENCE CHINA-LIFE SCIENCES 2019; 62:1178-1193. [PMID: 30796721 DOI: 10.1007/s11427-018-9456-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 12/12/2018] [Indexed: 01/20/2023]
Abstract
An intricate relationship exists and interactions occur between gut microbiota and colorectal cancer (CRC). Radical surgery combined with adjuvant chemotherapy (AC) serves as the mainstream therapeutic scheme for most CRC patients. The current research was conducted to assess the effect of surgery or chemotherapy on gut microbiota. Forty-three CRC patients who received radical surgery and AC were enrolled. Fecal samples were collected preoperatively, postoperatively, and after the first to fifth cycles of postoperative chemotherapy. The microbial community of each sample was analyzed using high throughput 16S rRNA amplicon sequencing. Compared with preoperative samples, fecal samples collected postoperatively exhibited a significant decrease of obligate anaerobes, tumor-related bacteria, and butyric acid-producing bacteria. However, a significant increase of some conditional pathogens was observed. In addition, the AC regimen (CapeOx) was found to alter intestinal microbiota dramatically. In particular, several changes were observed after chemotherapy including an increase of pathogenic bacteria, the "rebound effect" of chemotherapy-adapted bacteria, the shift of lactate-utilizing microbiota from Veillonella to Butyricimonas and Butyricicoccus, as well as the decrease of probiotics. Both radical surgery and CapeOx chemotherapy exert a non-negligible effect on the gut microbiota of CRC patients. Microbiota-based intervention may be beneficial for patients during postoperative clinical management.
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Zwielehner J, Lassl C, Hippe B, Pointner A, Switzeny OJ, Remely M, Kitzweger E, Ruckser R, Haslberger AG. Changes in human fecal microbiota due to chemotherapy analyzed by TaqMan-PCR, 454 sequencing and PCR-DGGE fingerprinting. PLoS One 2011; 6:e28654. [PMID: 22194876 PMCID: PMC3237468 DOI: 10.1371/journal.pone.0028654] [Citation(s) in RCA: 151] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Accepted: 11/11/2011] [Indexed: 12/14/2022] Open
Abstract
Background We investigated whether chemotherapy with the presence or absence of antibiotics against different kinds of cancer changed the gastrointestinal microbiota. Methodology/Principal Findings Feces of 17 ambulant patients receiving chemotherapy with or without concomitant antibiotics were analyzed before and after the chemotherapy cycle at four time points in comparison to 17 gender-, age- and lifestyle-matched healthy controls. We targeted 16S rRNA genes of all bacteria, Bacteroides, bifidobacteria, Clostridium cluster IV and XIVa as well as C. difficile with TaqMan qPCR, denaturing gradient gel electrophoresis (DGGE) fingerprinting and high-throughput sequencing. After a significant drop in the abundance of microbiota (p = 0.037) following a single treatment the microbiota recovered within a few days. The chemotherapeutical treatment marginally affected the Bacteroides while the Clostridium cluster IV and XIVa were significantly more sensitive to chemotherapy and antibiotic treatment. DGGE fingerprinting showed decreased diversity of Clostridium cluster IV and XIVa in response to chemotherapy with cluster IV diversity being particularly affected by antibiotics. The occurrence of C. difficile in three out of seventeen subjects was accompanied by a decrease in the genera Bifidobacterium, Lactobacillus, Veillonella and Faecalibacterium prausnitzii. Enterococcus faecium increased following chemotherapy. Conclusions/Significance Despite high individual variations, these results suggest that the observed changes in the human gut microbiota may favor colonization with C.difficile and Enterococcus faecium. Perturbed microbiota may be a target for specific mitigation with safe pre- and probiotics.
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Affiliation(s)
| | | | - Berit Hippe
- Department of Nutritional Sciences, Vienna, Austria
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Swann JR, Tuohy KM, Lindfors P, Brown DT, Gibson GR, Wilson ID, Sidaway J, Nicholson JK, Holmes E. Variation in antibiotic-induced microbial recolonization impacts on the host metabolic phenotypes of rats. J Proteome Res 2011; 10:3590-603. [PMID: 21591676 DOI: 10.1021/pr200243t] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The interaction between the gut microbiota and their mammalian host is known to have far-reaching consequences with respect to metabolism and health. We investigated the effects of eight days of oral antibiotic exposure (penicillin and streptomycin sulfate) on gut microbial composition and host metabolic phenotype in male Han-Wistar rats (n = 6) compared to matched controls. Early recolonization was assessed in a third group exposed to antibiotics for four days followed by four days recovery (n = 6). Fluorescence in situ hybridization analysis of the intestinal contents collected at eight days showed a significant reduction in all bacterial groups measured (control, 10(10.7) cells/g feces; antibiotic-treated, 10(8.4)). Bacterial suppression reduced the excretion of mammalian-microbial urinary cometabolites including hippurate, phenylpropionic acid, phenylacetylglycine and indoxyl-sulfate whereas taurine, glycine, citrate, 2-oxoglutarate, and fumarate excretion was elevated. While total bacterial counts remained notably lower in the recolonized animals (10(9.1) cells/g faeces) compared to the controls, two cage-dependent subgroups emerged with Lactobacillus/Enterococcus probe counts dominant in one subgroup. This dichotomous profile manifested in the metabolic phenotypes with subgroup differences in tricarboxylic acid cycle metabolites and indoxyl-sulfate excretion. Fecal short chain fatty acids were diminished in all treated animals. Antibiotic treatment induced a profound effect on the microbiome structure, which was reflected in the metabotype. Moreover, the recolonization process was sensitive to the microenvironment, which may impact on understanding downstream consequences of antibiotic consumption in human populations.
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Affiliation(s)
- Jonathan R Swann
- Biomolecular Medicine, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom.
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Friswell MK, Gika H, Stratford IJ, Theodoridis G, Telfer B, Wilson ID, McBain AJ. Site and strain-specific variation in gut microbiota profiles and metabolism in experimental mice. PLoS One 2010; 5:e8584. [PMID: 20052418 PMCID: PMC2798964 DOI: 10.1371/journal.pone.0008584] [Citation(s) in RCA: 159] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2009] [Accepted: 12/09/2009] [Indexed: 12/13/2022] Open
Abstract
Background The gastrointestinal tract microbiota (GTM) of mammals is a complex microbial consortium, the composition and activities of which influences mucosal development, immunity, nutrition and drug metabolism. It remains unclear whether the composition of the dominant GTM is conserved within animals of the same strain and whether stable GTMs are selected for by host-specific factors or dictated by environmental variables. Methodology/Principal Findings The GTM composition of six highly inbred, genetically distinct strains of mouse (C3H, C57, GFEC, CD1, CBA nu/nu and SCID) was profiled using eubacterial –specific PCR-DGGE and quantitative PCR of feces. Animals exhibited strain-specific fecal eubacterial profiles that were highly stable (c. >95% concordance over 26 months for C57). Analyses of mice that had been relocated before and after maturity indicated marked, reproducible changes in fecal consortia and that occurred only in young animals. Implantation of a female BDF1 mouse with genetically distinct (C57 and Agoutie) embryos produced highly similar GTM profiles (c. 95% concordance) between mother and offspring, regardless of offspring strain, which was also reflected in urinary metabolite profiles. Marked institution-specific GTM profiles were apparent in C3H mice raised in two different research institutions. Conclusion/Significance Strain-specific data were suggestive of genetic determination of the composition and activities of intestinal symbiotic consortia. However, relocation studies and uterine implantation demonstrated the dominance of environmental influences on the GTM. This was manifested in large variations between isogenic adult mice reared in different research institutions.
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Affiliation(s)
- Melissa K. Friswell
- Microbiology Research Group, School of Pharmacy and Pharmaceutical Sciences, The University of Manchester, Manchester, United Kingdom
| | - Helen Gika
- AstraZeneca, Department of Clinical Pharmacology, Drug Metabolism and Pharmacokinetics, Macclesfield, United Kingdom
- Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ian J. Stratford
- Experimental Oncology Research Group, School of Pharmacy and Pharmaceutical Sciences, The University of Manchester, Manchester, United Kingdom
| | - Georgios Theodoridis
- AstraZeneca, Department of Clinical Pharmacology, Drug Metabolism and Pharmacokinetics, Macclesfield, United Kingdom
- Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Brian Telfer
- Experimental Oncology Research Group, School of Pharmacy and Pharmaceutical Sciences, The University of Manchester, Manchester, United Kingdom
| | - Ian D. Wilson
- AstraZeneca, Department of Clinical Pharmacology, Drug Metabolism and Pharmacokinetics, Macclesfield, United Kingdom
| | - Andrew J. McBain
- Microbiology Research Group, School of Pharmacy and Pharmaceutical Sciences, The University of Manchester, Manchester, United Kingdom
- * E-mail:
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