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Sun X, Gao Y, Wang X, Hu G, Wang Y, Feng B, Hu Y, Mu X, Zhang Y, Dong H. Escherichia coli O 101-induced diarrhea develops gut microbial dysbiosis in rats. Exp Ther Med 2018; 17:824-834. [PMID: 30651869 DOI: 10.3892/etm.2018.6997] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 07/06/2018] [Indexed: 12/15/2022] Open
Abstract
Enterotoxigenic Escherichia coli (ETEC)-induced diarrhea is a devastating disease and one of the third leading causes of infectious disease-associated mortalities worldwide. Despite recent advances in the identification of the association between gut microbiota and diarrhea, a lack of understanding exists on the status of gut microbiota in rats treated with ETEC. In the present study, a rat model of Escherichia (E.) coli O101-induced diarrhea was established. The diarrhea incidence and index, as well as histological changes, were assessed. In addition, Illumina MiSeq sequencing of V3-V4 hypervariable regions of 16S ribosomal RNA was employed to investigate the changes in the gut microbiota profiles in the feces of the diarrhea rats. The results indicated that E. coli O101 increased the diarrhea index and injury in the intestinal tissues, whereas it decreased the bacterial richness and shifted the distribution pattern of the bacterial communities in the phylum, order and genus levels in the fecal samples. Notably, the proportion of bacteria Prevotella, Enterococcus and Akkermansia was significantly decreased, while the pathogenic bacteria Escherichia/Shigella were significantly increased in diarrhea rats. Taken together, the gut microbiota is closely associated with E. coli O101-induced diarrhea in lower microbial diversity and dysbiosis of gut microbiota at different taxonomical levels.
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Affiliation(s)
- Xiangwan Sun
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Beijing University of Agriculture, Beijing 102206, P.R. China
| | - Ying Gao
- Department of Biology, Tennessee Center for Botanical Medicine Research, Middle Tennessee State University, Murfreesboro, TN 37132-0001, USA
| | - Xin Wang
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Beijing University of Agriculture, Beijing 102206, P.R. China
| | - Ge Hu
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Beijing University of Agriculture, Beijing 102206, P.R. China
| | - Yun Wang
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Beijing University of Agriculture, Beijing 102206, P.R. China
| | - Bo Feng
- College of Veterinary Medicine, China Agricultural University, Beijing 100083, P.R. China
| | - Yanxin Hu
- College of Veterinary Medicine, China Agricultural University, Beijing 100083, P.R. China
| | - Xiang Mu
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Beijing University of Agriculture, Beijing 102206, P.R. China
| | - Ying Zhang
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, P.R. China
| | - Hong Dong
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Beijing University of Agriculture, Beijing 102206, P.R. China
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Bacteriological and epidemiological characteristics of enterotoxigenic Escherichia coli isolated in Tokyo, Japan, between 1966 and 2009. J Clin Microbiol 2011; 49:3348-51. [PMID: 21752981 DOI: 10.1128/jcm.02576-10] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Enterotoxigenic Escherichia coli (ETEC) caused 131 outbreaks in Tokyo, Japan, between 1966 and 2009. The major serogroups were O6, O27, O148, and O159. The incidence of serogroups O25 and O169 recently increased. Heat-stable enterotoxin (ST) subtyping revealed that E. coli of serogroups O6, O15, O25, and O159 possessed the STh gene, whereas those serotyped as O27 and O169 possessed the STp gene.
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Bodero MD, Harden EA, Munson GP. Transcriptional regulation of subclass 5b fimbriae. BMC Microbiol 2008; 8:180. [PMID: 18854044 PMCID: PMC2579436 DOI: 10.1186/1471-2180-8-180] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2008] [Accepted: 10/14/2008] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Enterotoxigenic Escherichia coli (ETEC) is a major cause of infant and child mortality in developing countries. This enteric pathogen causes profuse watery diarrhea by elaborating one or more enterotoxins that intoxicate eukaryotic cells and ultimately leads to a loss of water to the intestinal lumen. Virulence is also dependent upon fimbrial adhesins that facilitate colonization of the small intestine. RESULTS The expression of CS1 fimbriae is positively regulated by Rns, a member of the AraC/XylS superfamily of transcriptional regulators. Based on fimbrial protein homology, CS1 fimbriae have been categorized as subclass 5b along with CS17, CS19, and PCFO71 fimbriae. In this study we show that Rns positively regulates the expression of these other subclass 5b members. DNase I footprinting revealed a Rns binding site adjacent to the -35 hexamer of each fimbrial promoter. The CS17 and PCFO71 fimbrial promoters carry a second Rns binding site centered at -109.5, relative to the Rns-dependent transcription start site. This second binding site is centered at -108.5 for the CS19 promoter. Mutagenesis of either site reduced Rns-dependent transcription from each promoter indicating that the molecules bound to these sites apparently function independently of one another, with each having an additive effect upon fimbrial promoter activation. CONCLUSION This study demonstrates that the ETEC virulence regulator Rns is required for the expression of all known 5b fimbriae. Since Rns is also known to control the expression of additional ETEC fimbriae, including those within subclasses 5a and 5c, the inactivation or inhibition of Rns could be an effective strategy to prevent ETEC infections.
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Affiliation(s)
- Maria D Bodero
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL 33101, USA.
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Gupta SK, Keck J, Ram PK, Crump JA, Miller MA, Mintz ED. Part III. Analysis of data gaps pertaining to enterotoxigenic Escherichia coli infections in low and medium human development index countries, 1984-2005. Epidemiol Infect 2007; 136:721-38. [PMID: 17686197 PMCID: PMC2870873 DOI: 10.1017/s095026880700934x] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Enterotoxigenic Escherichia coli (ETEC) is a common cause of profuse watery diarrhoea in the developing world, often leading to severe dehydration or death. We found only 15 population-based studies in low and medium human development index (HDI) countries from 1984 to 2005 that evaluate disease incidence. Reported incidence ranged from 39 to 4460 infections/1000 persons per year. The peak incidence of ETEC appeared to occur between ages 6 and 18 months. A median of 14% (range 2-36%) of diarrhoeal specimens were positive for ETEC in 19 facility- and population-based studies conducted in all age groups and 13% (range 3-39%) in 51 studies conducted in children only. Heat-labile toxin (LT)-ETEC is thought to be less likely to cause disease than heat-stable toxin (ST)-ETEC or LT/ST-ETEC. Because population-based studies involve enhanced clinical management of patients and facility-based studies include only the most severe illnesses, reliable data on complications and mortality from ETEC infections was unavailable. To reduce gaps in the current understanding of ETEC incidence, complications and mortality, large population-based studies combined with facility-based studies covering a majority of the corresponding population are needed, especially in low-HDI countries. Moreover, a standard molecular definition of ETEC infection is needed to be able to compare results across study sites.
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Affiliation(s)
- S K Gupta
- Enteric Diseases Epidemiology Branch, National Center for Zoonotic, Vectorborne, and Enteric Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA.
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Ram PK, Crump JA, Gupta SK, Miller MA, Mintz ED. Part II. Analysis of data gaps pertaining to Shigella infections in low and medium human development index countries, 1984-2005. Epidemiol Infect 2007; 136:577-603. [PMID: 17686195 PMCID: PMC2870860 DOI: 10.1017/s0950268807009351] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
The global incidence of Shigella infection has been estimated at 80-165 million episodes annually, with 99% of episodes occurring in the developing world. To identify contemporary gaps in the understanding of the global epidemiology of shigellosis, we conducted a review of the English-language scientific literature from 1984 to 2005, restricting the search to low and medium human development countries. Our review yielded 11 population-based studies of Shigella burden from seven countries. No population-based studies have been conducted in sub-Saharan Africa or in low human development countries. In studies done in all age groups, Shigella incidence varied from 0.6 to 107 episodes/1000 person-years. S. flexneri was the most commonly detected subgroup in the majority of studies. Case-fatality rates ranged from 0% to 2.6% in population-based studies and from 0% to 21% in facility-based studies. This review highlights the large gaps in data on the burden of Shigella infections for low human development index countries and, more specifically, for sub-Saharan Africa.
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Affiliation(s)
- P K Ram
- Department of Social and Preventive Medicine, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY 14214, USA.
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Agtini MD, Soeharno R, Lesmana M, Punjabi NH, Simanjuntak C, Wangsasaputra F, Nurdin D, Pulungsih SP, Rofiq A, Santoso H, Pujarwoto H, Sjahrurachman A, Sudarmono P, von Seidlein L, Deen JL, Ali M, Lee H, Kim DR, Han O, Park JK, Suwandono A, Oyofo BA, Campbell JR, Beecham HJ, Corwin AL, Clemens JD. The burden of diarrhoea, shigellosis, and cholera in North Jakarta, Indonesia: findings from 24 months surveillance. BMC Infect Dis 2005; 5:89. [PMID: 16242013 PMCID: PMC1276796 DOI: 10.1186/1471-2334-5-89] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2005] [Accepted: 10/20/2005] [Indexed: 11/10/2022] Open
Abstract
Background In preparation of vaccines trials to estimate protection against shigellosis and cholera we conducted a two-year community-based surveillance study in an impoverished area of North Jakarta which provided updated information on the disease burden in the area. Methods We conducted a two-year community-based surveillance study from August 2001 to July 2003 in an impoverished area of North Jakarta to assess the burden of diarrhoea, shigellosis, and cholera. At participating health care providers, a case report form was completed and stool sample collected from cases presenting with diarrhoea. Results Infants had the highest incidences of diarrhoea (759/1 000/year) and cholera (4/1 000/year). Diarrhea incidence was significantly higher in boys under 5 years (387/1 000/year) than girls under 5 years (309/1 000/year; p < 0.001). Children aged 1 to 2 years had the highest incidence of shigellosis (32/1 000/year). Shigella flexneri was the most common Shigella species isolated and 73% to 95% of these isolates were resistant to ampicillin, trimethoprim-sulfamethoxazole, chloramphenicol and tetracycline but remain susceptible to nalidixic acid, ciprofloxacin, and ceftriaxone. We found an overall incidence of cholera of 0.5/1 000/year. Cholera was most common in children, with the highest incidence at 4/1 000/year in those less than 1 year of age. Of the 154 V. cholerae O1 isolates, 89 (58%) were of the El Tor Ogawa serotype and 65 (42%) were El Tor Inaba. Thirty-four percent of patients with cholera were intravenously rehydrated and 22% required hospitalization. V. parahaemolyticus infections were detected sporadically but increased from July 2002 onwards. Conclusion Diarrhoea causes a heavy public health burden in Jakarta particularly in young children. The impact of shigellosis is exacerbated by the threat of antimicrobial resistance, whereas that of cholera is aggravated by its severe manifestations.
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Affiliation(s)
- Magdarina D Agtini
- National Institute of Health Research and Development, Jakarta Indonesia, Ministry of Health, Jakarta, Indonesia
| | - Rooswanti Soeharno
- National Institute of Health Research and Development, Jakarta Indonesia, Ministry of Health, Jakarta, Indonesia
| | - Murad Lesmana
- United States Navy Medical Research Unit 2, Jakarta, Indonesia
| | | | | | - Ferry Wangsasaputra
- National Institute of Health Research and Development, Jakarta Indonesia, Ministry of Health, Jakarta, Indonesia
- United States Navy Medical Research Unit 2, Jakarta, Indonesia
| | - Dazwir Nurdin
- United States Navy Medical Research Unit 2, Jakarta, Indonesia
| | - Sri Pandam Pulungsih
- Infectious Disease Hospital Sulianti Saroso, Ministry of Health, Jakarta, Indonesia
| | - Ainur Rofiq
- National Institute of Health Research and Development, Jakarta Indonesia, Ministry of Health, Jakarta, Indonesia
| | - Hari Santoso
- Communicable Disease Control and Environmental Health, Ministry of Health, Jakarta, Indonesia
| | - H Pujarwoto
- National Institute of Health Research and Development, Jakarta Indonesia, Ministry of Health, Jakarta, Indonesia
| | | | - Pratiwi Sudarmono
- Department of Microbiology, University of Indonesia, Jakarta, Indonesia
| | | | | | | | - Hyejon Lee
- International Vaccine Institute, Seoul, Korea
| | | | - Oakpil Han
- International Vaccine Institute, Seoul, Korea
| | | | - Agus Suwandono
- National Institute of Health Research and Development, Jakarta Indonesia, Ministry of Health, Jakarta, Indonesia
| | - Buhari A Oyofo
- United States Navy Medical Research Unit 2, Jakarta, Indonesia
| | | | - H James Beecham
- United States Navy Medical Research Unit 2, Jakarta, Indonesia
| | - Andrew L Corwin
- United States Navy Medical Research Unit 2, Jakarta, Indonesia
| | - John D Clemens
- International Vaccine Institute, Seoul, Korea
- National Institute of Child Health and Human Development, Bethesda, Maryland, USA
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Fryauff DJ, Krippner R, Prodjodipuro P, Ewald C, Kawengian S, Pegelow K, Yun T, von Heydwolff-Wehnert C, Oyofo B, Gross R. Cyclospora cayetanensis among expatriate and indigenous populations of West Java, Indonesia. Emerg Infect Dis 1999; 5:585-8. [PMID: 10458970 PMCID: PMC2627760 DOI: 10.3201/eid0504.990426] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
From January 1995 through July 1998, we investigated the occurrence of Cyclospora cayetanensis infection associated with gastrointestinal illness or diarrhea in foreign residents and natives of West Java, Indonesia. We found that C. cayetanensis was the main protozoal cause of gastrointestinal illness and diarrhea in adult foreign residents during the wet season. The parasite rarely caused illness in the indigenous population or in children.
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Affiliation(s)
- D J Fryauff
- U.S. Naval Medical Research Unit No. 2, Jakarta, Indonesia.
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