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Ren J, Ren Y, Mu Y, Zhang L, Chen B, Li S, Fang Q, Zhang Z, Zhang K, Li S, Liu W, Cui Y, Li X. Microbial imbalance in Chinese children with diarrhea or constipation. Sci Rep 2024; 14:13516. [PMID: 38866797 PMCID: PMC11169388 DOI: 10.1038/s41598-024-60683-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 04/26/2024] [Indexed: 06/14/2024] Open
Abstract
Diarrhea and constipation are common health concerns in children. Numerous studies have identified strong association between gut microbiota and digestive-related diseases. But little is known about the gut microbiota that simultaneously affects both diarrhea and constipation or their potential regulatory mechanisms. Stool samples from 618 children (66 diarrhea, 138 constipation, 414 healthy controls) aged 0-3 years were collected to investigate gut microbiota changes using 16S rRNA sequencing. Compared with healthy, children with diarrhea exhibited a significant decrease in microbial diversity, while those with constipation showed a marked increase (p < 0.05). Significantly, our results firstly Ruminococcus increased in constipation (p = 0.03) and decreased in diarrhea (p < 0.01) compared to healthy controls. Pathway analysis revealed that Ruminococcus highly involved in the regulation of five common pathways (membrane transport, nervous system, energy metabolism, signal transduction and endocrine system pathways) between diarrhea and constipation, suggesting a potential shared regulatory mechanism. Our finding firstly reveals one core microorganisms that may affect the steady balance of the gut in children with diarrhea or constipation, providing an important reference for potential diagnosis and treatment of constipation and diarrhea.
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Affiliation(s)
- Jing Ren
- Coyote Bioscience (Beijing) Co., Ltd., Beijing, China
| | - Yi Ren
- Coyote Bioscience (Beijing) Co., Ltd., Beijing, China
| | - Yu Mu
- Dr. Cuiyutao Healthcare Co., Ltd., Beijing, China
| | - Lanying Zhang
- Coyote Diagnostics Lab (Beijing) Co., Ltd., Beijing, China
| | - Binghan Chen
- Coyote Bioscience (Beijing) Co., Ltd., Beijing, China
| | - Sisi Li
- Coyote Bioscience (Beijing) Co., Ltd., Beijing, China
| | - Qinyi Fang
- Coyote Bioscience (Beijing) Co., Ltd., Beijing, China
| | - Zhiming Zhang
- Coyote Bioscience (Beijing) Co., Ltd., Beijing, China
| | - Kejian Zhang
- Coyote Bioscience (Beijing) Co., Ltd., Beijing, China
| | - Sabrina Li
- Coyote Bioscience (Beijing) Co., Ltd., Beijing, China
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China.
| | - Yutao Cui
- Dr. Cuiyutao Healthcare Co., Ltd., Beijing, China.
| | - Xu Li
- Coyote Bioscience (Beijing) Co., Ltd., Beijing, China.
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Abbas HA, Taha AA, Sulaiman GM, Al Ali A, Shmrany HA, Stamatis H, Mohammed HA, Khan RA. Antibacterial and hemocompatibility potentials of nano-gold-cored alginate preparation against anaerobic bacteria from acne vulgaris. Sci Rep 2024; 14:6984. [PMID: 38523189 PMCID: PMC10961324 DOI: 10.1038/s41598-024-57643-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/20/2024] [Indexed: 03/26/2024] Open
Abstract
Acne is a prevalent dermatological disease, with high global incidence, and is a health menace. The current study aimed to isolate and characterize the anaerobic bacteria responsible for the condition. Causes of a total of 70 acne-based bacterium isolates obtained from patients of mild, moderate, and severe acne, 24 were Clostridium innocuum, 21 were Lactobacillus plantarum, 13 were Anaerococcus prevotii, and 12 were Peptoniphilus asaccharolyticus. Nearly 69% of males were suffering, while the rest were females at 31%. The 15-30 years old age group was the most affected. The gold/alginate nanoparticles' nanopreparation (GANPs) produced from chloroauric acid and sodium alginate was an effective treatment against the acne conditions under the experimental conditions. The nanopreparation exhibited significant inhibitory activity against anaerobic bacterial isolates, with a minimum inhibitory concentration of 200 µg/ml for A. prevotii and P. asaccharolyticus, and 400 µg/ml for C. innocuum and L. plantarum. The in vitro efficacy of the GANPs on human blood parameters was also assessed. The concurrent results suggested potential antibacterial activity and hemocompatibility of the product, which has promise to be used as a successful antibacterial agent for acne.
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Affiliation(s)
- Hanan A Abbas
- Division of Biotechnology, Department of Applied Sciences, University of Technology, Baghdad, Iraq
| | - Ali A Taha
- Division of Biotechnology, Department of Applied Sciences, University of Technology, Baghdad, Iraq
| | - Ghassan M Sulaiman
- Division of Biotechnology, Department of Applied Sciences, University of Technology, Baghdad, Iraq.
| | - Amer Al Ali
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, University of Bisha, 255, 67714, Bisha, Saudi Arabia
| | - Humood Al Shmrany
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, 11942, Alkharj, Saudi Arabia
| | - Haralambos Stamatis
- Department of Biological Applications and Technology, University of Ioannina, Ioannina, Greece
| | - Hamdoon A Mohammed
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, 51452, Qassim, Saudi Arabia
- Department of Pharmacognosy and Medicinal Plants, Faculty of Pharmacy, Al-Azhar University, Cairo, 11884, Egypt
| | - Riaz A Khan
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, 51452, Qassim, Saudi Arabia
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Wu HY, Kuo CJ, Chou CH, Ho MW, Chen CL, Hsu TS, Chen YC, Chiang-Ni C, Chen YYM, Chiu CH, Lai CH. Clostridium innocuum, an emerging pathogen that induces lipid raft-mediated cytotoxicity. Virulence 2023; 14:2265048. [PMID: 37798913 PMCID: PMC10561569 DOI: 10.1080/21505594.2023.2265048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 09/25/2023] [Indexed: 10/07/2023] Open
Abstract
Clostridium innocuum is an emerging spore-forming anaerobe that is often observed in Clostridioides difficile-associated inflammatory bowel disease (IBD) exacerbations. Unlike C. difficile, C. innocuum neither produces toxins nor possesses toxin-encoding genetic loci, but is commonly found in both intestinal and extra-intestinal infections. Membrane lipid rafts are composed of dynamic assemblies of cholesterol and sphingolipids, allowing bacteria to gain access to cells. However, the direct interaction between C. innocuum and lipid rafts that confers bacteria the ability to disrupt the intestinal barrier and induce pathogenesis remains unclear. In this study, we investigated the associations among nucleotide-binding oligomerization domain containing 2 (NOD2), lipid rafts, and cytotoxicity in C. innocuum-infected gut epithelial cells. Our results revealed that lipid rafts were involved in C. innocuum-induced NOD2 expression and nuclear factor (NF)-κB activation, triggering an inflammatory response. Reducing cholesterol by simvastatin significantly dampened C. innocuum-induced cell death, indicating that the C. innocuum-induced pathogenicity of cells was lipid raft-dependent. These results demonstrate that NOD2 mobilization into membrane rafts in response to C. innocuum-induced cytotoxicity results in aggravated pathogenicity.
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Affiliation(s)
- Hui-Yu Wu
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Chia-Jung Kuo
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Chang Gung Microbiota Therapy Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Chia-Huei Chou
- Department of Infectious Disease, China Medical University Hospital, Taichung, Taiwan
- Department of Infectious Disease, Department of Microbiology and Immunology, School of Medicine, China Medical University, Taichung, Taiwan
| | - Mao-Wang Ho
- Department of Infectious Disease, China Medical University Hospital, Taichung, Taiwan
- Department of Infectious Disease, Department of Microbiology and Immunology, School of Medicine, China Medical University, Taichung, Taiwan
| | - Chyi-Liang Chen
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
- Molecular Infectious Disease Research Center, Department of Pediatrics, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Tsui-Shan Hsu
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Ying-Chu Chen
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Chuan Chiang-Ni
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
- Molecular Infectious Disease Research Center, Department of Pediatrics, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Yi-Ywan M. Chen
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
- Molecular Infectious Disease Research Center, Department of Pediatrics, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Cheng-Hsun Chiu
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Chang Gung Microbiota Therapy Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
- Molecular Infectious Disease Research Center, Department of Pediatrics, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Chih-Ho Lai
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
- Department of Infectious Disease, Department of Microbiology and Immunology, School of Medicine, China Medical University, Taichung, Taiwan
- Molecular Infectious Disease Research Center, Department of Pediatrics, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
- Department of Nursing, Asia University, Taichung, Taiwan
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Li Z, Gu M, Sun H, Chen X, Zhou J, Zhang Y. The Potential of Gut Microbiota in Prediction of Stroke-Associated Pneumonia. Brain Sci 2023; 13:1217. [PMID: 37626573 PMCID: PMC10452830 DOI: 10.3390/brainsci13081217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/10/2023] [Accepted: 08/13/2023] [Indexed: 08/27/2023] Open
Abstract
BACKGROUND Stroke-associated pneumonia (SAP) is a common stroke complication, and the changes in the gut microbiota composition may play a role. Our study aimed to evaluate the predictive ability of gut microbiota for SAP. METHODS Acute ischemic stroke patients were prospectively enrolled and divided into two groups based on the presence or absence of SAP. The composition of gut microbiota was characterized by the 16S RNA Miseq sequencing. The gut microbiota that differed significantly between groups were incorporated into the conventional risk scores, the Acute Ischemic Stroke-Associated Pneumonia Score (AIS-APS), and the Age, Atrial fibrillation, Dysphagia, Sex, Stroke Severity Score (A2DS2). The predictive performances were assessed in terms of the area under the curve (AUC), the Net Reclassification Improvement (NRI), and the Integrated Discrimination Improvement (IDI) indices. RESULTS A total of 135 patients were enrolled, of whom 43 had SAP (31%). The short-chain fatty acids (SCFAs)-producing bacteria, such as Bacteroides, Fusicatenibacter, and Butyricicoccus, were decreased in the SAP group. The integrated models showed better predictive ability for SAP (AUC = 0.813, NRI = 0.333, p = 0.052, IDI = 0.038, p = 0.018, for AIS-APS; AUC = 0.816, NRI = 0.575, p < 0.001, IDI = 0.043, p = 0.007, for A2DS2) in comparison to the differential genera (AUC = 0.699) and each predictive score (AUCAISAPS = 0.777; AUCA2DS2 = 0.777). CONCLUSIONS The lower abundance of SCFAs-producing gut microbiota after acute ischemic stroke was associated with SAP and may play a role in SAP prediction.
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Affiliation(s)
- Zhongyuan Li
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing 210006, China; (Z.L.); (X.C.)
| | - Mengmeng Gu
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing 210006, China; (Z.L.); (X.C.)
| | - Huanhuan Sun
- Department of Neurology, Nanjing Yuhua Hospital, Nanjing 210039, China
| | - Xiangliang Chen
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing 210006, China; (Z.L.); (X.C.)
| | - Junshan Zhou
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing 210006, China; (Z.L.); (X.C.)
| | - Yingdong Zhang
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing 210006, China; (Z.L.); (X.C.)
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Mu C, Zhao Q, Zhao Q, Yang L, Pang X, Liu T, Li X, Wang B, Fung SY, Cao H. Multi-omics in Crohn's disease: New insights from inside. Comput Struct Biotechnol J 2023; 21:3054-3072. [PMID: 37273853 PMCID: PMC10238466 DOI: 10.1016/j.csbj.2023.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 05/10/2023] [Accepted: 05/11/2023] [Indexed: 06/06/2023] Open
Abstract
Crohn's disease (CD) is an inflammatory bowel disease (IBD) with complex clinical manifestations such as chronic diarrhea, weight loss and hematochezia. Despite the increasing incidence worldwide, cure of CD remains extremely difficult. The rapid development of high-throughput sequencing technology with integrated-omics analyses in recent years has provided a new means for exploring the pathogenesis, mining the biomarkers and designing targeted personalized therapeutics of CD. Host genomics and epigenomics unveil heredity-related mechanisms of susceptible individuals, while microbiome and metabolomics map host-microbe interactions in CD patients. Proteomics shows great potential in searching for promising biomarkers. Nonetheless, single omics technology cannot holistically connect the mechanisms with heterogeneity of pathological behavior in CD. The rise of multi-omics analysis integrates genetic/epigenetic profiles with protein/microbial metabolite functionality, providing new hope for comprehensive and in-depth exploration of CD. Herein, we emphasized the different omics features and applications of CD and discussed the current research and limitations of multi-omics in CD. This review will update and deepen our understanding of CD from integration of broad omics spectra and will provide new evidence for targeted individualized therapeutics.
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Affiliation(s)
- Chenlu Mu
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Qianjing Zhao
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Qing Zhao
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Lijiao Yang
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Xiaoqi Pang
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Tianyu Liu
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Xiaomeng Li
- Department of Immunology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), The Province and Ministry Co-Sponsored Collaborative Innovation Center for Medical Epigenetics, School of Basic Medical Science, Tianjin Medical University, Tianjin, China
| | - Bangmao Wang
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
| | - Shan-Yu Fung
- Department of Immunology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), The Province and Ministry Co-Sponsored Collaborative Innovation Center for Medical Epigenetics, School of Basic Medical Science, Tianjin Medical University, Tianjin, China
| | - Hailong Cao
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China
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Cherny KE, Muscat EB, Balaji A, Mukherjee J, Ozer EA, Angarone MP, Hauser AR, Sichel JS, Amponsah E, Kociolek LK. Association Between Clostridium innocuum and Antibiotic-Associated Diarrhea in Adults and Children: A Cross-sectional Study and Comparative Genomics Analysis. Clin Infect Dis 2023; 76:e1244-e1251. [PMID: 35724319 PMCID: PMC10169446 DOI: 10.1093/cid/ciac483] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 06/03/2022] [Accepted: 06/09/2022] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND A recent study from Taiwan suggested that Clostridium innocuum may be an unrecognized cause of antibiotic-associated diarrhea (AAD) and clinically indistinguishable from Clostridioides difficile infection. Our objective was to compare C. innocuum prevalence and strain between those with AAD and asymptomatic controls. METHODS In this cross-sectional study, we collected stool from 200 individuals with AAD and 100 asymptomatic controls. We evaluated the association between AAD and C. innocuum in stool using anaerobic culture and quantitative polymerase chain reaction (qPCR). To identify strain-specific associations with AAD, we performed whole-genome sequencing of C. innocuum isolates using Illumina MiSeq and constructed comparative genomics analyses. RESULTS C. innocuum was isolated from stool of 126/300 (42%) subjects and more frequently from asymptomatic controls than AAD subjects (50/100 [50%] vs 76/200 [38%], respectively; P = .047). C. innocuum isolation frequency was not associated with AAD in either the adult or pediatric subgroups. C. innocuum and C. difficile were frequently co-prevalent in individuals with and without diarrhea. There were no phylogenetic differences or accessory genome associations between C. innocuum isolates from AAD subjects and asymptomatic controls. CONCLUSIONS C. innocuum was frequently isolated and at a greater frequency in asymptomatic controls than those with AAD. We did not identify strain lineages or accessory genomic elements associated with AAD. These data highlight that differentiating C. innocuum-associated diarrhea from asymptomatic colonization, and differentiating diarrhea caused by C. difficile from C. innocuum, are clinical microbiology challenges that require additional investigation to identify host-specific factors and/or biomarkers that distinguish these conditions.
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Affiliation(s)
- Kathryn E Cherny
- Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA
| | - Emily B Muscat
- Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Aakash Balaji
- Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Jayabrata Mukherjee
- Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Egon A Ozer
- Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA
| | - Michael P Angarone
- Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA
| | - Alan R Hauser
- Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA
| | - Joseph S Sichel
- Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA
| | - Emmanuel Amponsah
- Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Larry K Kociolek
- Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA.,Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
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Zakia LS, MacNicol JL, Borges AS, Yu S, Boerlin P, Gomez DE, Surette MG, Arroyo LG. Fecal prevalence of Clostridium innocuum DNA in healthy horses and horses with colitis. Anaerobe 2023; 79:102681. [PMID: 36481352 DOI: 10.1016/j.anaerobe.2022.102681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/23/2022] [Accepted: 12/04/2022] [Indexed: 12/12/2022]
Abstract
This study compared the prevalence of C. innocuum DNA in the feces of healthy horses and horses with acute colitis. C. innocuum was identified in 22% (15/68) of colitis cases and 18% (12/68) of healthy horses (p = 0.416).
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Affiliation(s)
- Luiza S Zakia
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada.
| | - Jennifer L MacNicol
- Department of Animal Bioscience, Ontario Agricultural College, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada.
| | - Alexandre S Borges
- São Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, Department of Veterinary Clinical Science, Walter Mauricio Correa Street, No Number, Botucatu, Sao Paulo, 18618-681, Brazil.
| | - Serena Yu
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada.
| | - Patrick Boerlin
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada.
| | - Diego E Gomez
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada.
| | - Michael G Surette
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4K1, Canada.
| | - Luis G Arroyo
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada.
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8
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Chen YC, Le PH, Wang YH, Chuang TC, Yeh YM, Chiu CT, Chiu CH. Gut Colonization and Antibiotic-Associated Diarrhea by Clostridium innocuum in Children and Adults. Clin Infect Dis 2023; 76:369-371. [PMID: 36029096 DOI: 10.1093/cid/ciac696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 08/23/2022] [Indexed: 01/18/2023] Open
Affiliation(s)
- Yi-Ching Chen
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Puo-Hsien Le
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Yi-Hsin Wang
- Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Tzu-Chun Chuang
- Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yuan-Ming Yeh
- Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Cheng-Tang Chiu
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Cheng-Hsun Chiu
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan.,Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
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Incidental finding of Clostridium perfringens on human corpses used for the anatomy course. Anat Sci Int 2023; 98:151-154. [PMID: 36471134 PMCID: PMC9734960 DOI: 10.1007/s12565-022-00699-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 11/26/2022] [Indexed: 12/12/2022]
Abstract
Post-mortem specimens used for anatomy teaching are commonly embalmed using compositions of chemicals, with the objective to maintain tissue quality and to avoid putrefaction. Monitoring for bacterial or fungal contamination is becoming increasingly important especially when measures are taken to minimize exposure by chemicals such as formaldehyde. In this case, random swabs were taken from six corpses embalmed with ethanol-glycerin and Thiel embalming. Cultures and MALDI-TOF analyses yielded four cases of Clostridium perfringens contamination. C. perfringens is of special interest as a human pathogen. A potential source was identified in the containers filled with the moistening solution. Cross contamination with Clostridium species has likely occurred between corpses sharing the moistening solution and soaking the cover linen directly within the containers. To minimize any risk for those exposed, the moistening solutions were discarded and all equipment thoroughly disinfected. The specimens had to be cremated as they formed a potential source of Clostridium spores. Deviating from previous routines it was formalized that the cover linen must not be submerged in the moistening contains rather than moistening the specimens directly with dedicated vessels. Follow-up analyses yielded no further contamination with C. perfringens.
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