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Infectious diarrhea

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https://www.readbyqxmd.com/read/28650734/clostridium-difficile-associated-colitis-post-transplant-is-not-associated-with-elevation-of-tacrolimus-concentrations
#1
Hugo J R Bonatti, Karim W Sadik, Elizabeth Krebs, Costi D Sifri, Timothy L Pruett, Robert G Sawyer
BACKGROUND: Diarrhea is a common condition after solid organ transplant (SOT); Clostridium difficile-associated colitis (CDAC) is one of the most common infections after SOT. We documented previously that some types of enteritis are associated with an elevation of tacrolimus (TAC) trough concentrations by interfering with the drug's complex metabolism. PATIENTS AND METHODS: Tacrolimus concentrations of 25 SOT recipients including 12 renal and 13 liver recipients before, during, and after CDAC were analyzed retrospectively...
June 26, 2017: Surgical Infections
https://www.readbyqxmd.com/read/28647986/-studies-on-the-serum-types-and-identification-efficiency-on-diarrheagenic-escherichia-coli-isolated-from-diarrhea-patients-in-zhejiang-province
#2
F Yu, R N Wang, X Chen, S F Zheng, Y Y Wang, Y Chen
Objective: To investigate the serotypes of Diarrheagenic Escherichia coli (DEC) isolated from diarrheal patients in Zhejiang province and to explore the identification efficiency of serological screening methods. Methods: Serological agglutination tests were carried out in 696 strains of DEC (through the identification of virulence genes) which were selected from the Infectious Diarrhea Pathogen Monitoring Network Strain Bank of Zhejiang province, from July 2009 to June 2013. Results of virulence genes, serological identification and classification were compared...
June 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28643294/-saccharomyces-boulardii-cncm-i-745-influences-the-gut-associated-immune-system
#3
Heike Stier, Stephan C Bischoff
BACKGROUND: The impact of the intestinal microbiome is increasing steadily with regard to the immune function und the defense against pathogens. The medicinal yeast Saccharomyces boulardii CNCM I-745 (S. boulardii) has been used as probiotic for the prevention and treatment of infectious diarrhea since more than 50 years. Meta-analyses confirm the clinical efficacy of S. boulardii to treat diarrhea of various origins in children and adults. METHOD: This review article summarizes experimental studies on molecular and immunological mechanisms which explain the proven clinical efficacy of S...
June 2017: MMW Fortschritte der Medizin
https://www.readbyqxmd.com/read/28637804/bioactive-immune-components-of-anti-diarrheagenic-enterotoxigenic-e-coli-etec-hyperimmune-bovine-colostrum-products
#4
Khandra T Sears, Sharon M Tennant, Mardi K Reymann, Raphael Simon, Nicky Konstantopoulos, William C Blackwelder, Eileen M Barry, Marcela F Pasetti
Diarrhea is a common illness among travelers to resource-limited countries, the most prevalent attributable agent being enterotoxigenic Escherichia coli (ETEC). There are presently no vaccines licensed specifically for the prevention of ETEC-induced traveler's diarrhea (TD), and this has propelled investigation of alternative preventive methods. Colostrum, the first milk expressed after birthing, is rich in immunoglobulins and innate immune components for protection of newborns against infectious agents. Hyperimmune bovine colostrum (HBC) produced by immunization of cows during gestation (and containing high levels of specific antibodies) is a practical and effective prophylactic tool against gastrointestinal illnesses...
June 21, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28636257/covalent-attachment-and-pro-pro-endopeptidase-ppep-1-mediated-release-of-clostridium-difficile-cell-surface-proteins-involved-in-adhesion
#5
REVIEW
Jeroen Corver, Valentina Cordo', Hans C van Leeuwen, Oleg I Klychnikov, Paul J Hensbergen
In the past decade, Clostridium difficile has emerged as an important gut pathogen. This anaerobic, Gram-positive bacterium is the main cause of infectious nosocomial diarrhea. Whereas much is known about the mechanism through which the C. difficile toxins cause diarrhea, relatively little is known about the dynamics of adhesion and motility, which is mediated by cell surface proteins. This review will discuss the recent advances in our understanding of the sortase-mediated covalent attachment of cell surface (adhesion) proteins to the peptidoglycan layer of C...
June 21, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28634691/modulation-of-rotavirus-severe-gastroenteritis-by-the-combination-of-probiotics-and-prebiotics
#6
REVIEW
Guadalupe Gonzalez-Ochoa, Lilian K Flores-Mendoza, Ramona Icedo-Garcia, Ricardo Gomez-Flores, Patricia Tamez-Guerra
Annual mortality rates due to infectious diarrhea are about 2.2 million; children are the most vulnerable age group to severe gastroenteritis, representing group A rotaviruses as the main cause of disease. One of the main factors of rotavirus pathogenesis is the NSP4 protein, which has been characterized as a viral toxin involved in triggering several cellular responses leading to diarrhea. Furthermore, the rotavirus protein NSP1 has been associated with interferon production inhibition by inducing the degradation of interferon regulatory factors IRF3, IRF5, and IRF7...
June 20, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28625250/-fulminant-clostridium-difficile-colitis-new-challenges-in-critical-care-medicine
#7
Bin Liu
Fulminant Clostridium difficile colitis (FCDC) means severe Clostridium difficile colitis (CDC), which often manifested with severe diarrhea, fever, abdominal distention, electrolyte disorder, hypoalbuminemia, and it can lead to pseudo membrane colonitis, toxic megacolon, bowel perforation, septic shock, and multiple organ dysfunction. Now Clostridium difficile (CD) becomes one of the most important medical institutions related infectious pathogens. In particular, the recently discovered mutant CD strain NAP1/BI/ribotype 027 has high pathogenicity in the global epidemic and its outbreak...
June 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28602619/the-impact-of-sanitation-on-infectious-disease-and-nutritional-status-a-systematic-review-and-meta-analysis
#8
REVIEW
Matthew C Freeman, Joshua V Garn, Gloria D Sclar, Sophie Boisson, Kate Medlicott, Kelly T Alexander, Gauthami Penakalapati, Darcy Anderson, Amrita G Mahtani, Jack E T Grimes, Eva A Rehfuess, Thomas F Clasen
BACKGROUND: Sanitation aims to sequester human feces and prevent exposure to fecal pathogens. More than 2.4 billion people worldwide lack access to improved sanitation facilities and almost one billion practice open defecation. We undertook systematic reviews and meta-analyses to compile the most recent evidence on the impact of sanitation on diarrhea, soil-transmitted helminth (STH) infections, trachoma, schistosomiasis, and nutritional status assessed using anthropometry. METHODS AND FINDINGS: We updated previously published reviews by following their search strategy and eligibility criteria...
May 31, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28579983/effect-of-dietary-minerals-on-virulence-attributes-of-vibrio-cholerae
#9
Varunkumar Bhattaram, Abhinav Upadhyay, Hsin-Bai Yin, Shankumar Mooyottu, Kumar Venkitanarayanan
Vibrio cholerae is a water-borne pathogen responsible for causing a toxin-mediated profuse diarrhea in humans, leading to severe dehydration and death in unattended patients. With increasing reports of antibiotic resistance in V. cholerae, there is a need for alternate interventional strategies for controlling cholera. A potential new strategy for treating infectious diseases involves targeting bacterial virulence rather than growth, where a pathogen's specific mechanisms critical for causing infection in hosts are inhibited...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28573108/spreading-of-pandemic-vibrio-parahaemolyticus-o3-k6-and-its-serovariants-a-re-analysis-of-strains-isolated-from-multiple-studies
#10
Dongsheng Han, Fei Yu, Hui Tang, Chuanli Ren, Caiyun Wu, Pan Zhang, Chongxu Han
In China, V. parahaemolyticus has been a leading cause of foodborne outbreaks and bacterial infectious diarrhea since the 1990s, and most infections have been associated with the pandemic V. parahaemolyticus O3:K6 and its serovariants. However, a comprehensive overview of the sero-prevalence and genetic diversity of the pandemic V. parahaemolyticus clone in China is lacking. To compensate for this deficiency, pandemic isolates in both clinical and environmental Chinese samples collected from multiple studies were analyzed in this study...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28570694/trends-of-vaccine-preventable-diseases-in-afghanistan-from-the-disease-early-warning-system-2009-2015
#11
Abram L Wagner, Mohammad Y Mubarak, Laura E Johnson, Julia M Porth, Jenna E Yousif, Matthew L Boulton
BACKGROUND: Afghanistan's public health system was neglected during decades of military and civil conflict, and trends in infectious disease occurrence remain poorly characterized. This study examines cyclical and long-term trends of six vaccine-preventable diseases: pneumonia, diarrhea, meningitis, typhoid, measles, and acute viral hepatitis. METHODS: Using weekly data collected between 2009 and 2015 through Afghanistan's Disease Early Warning System, we calculated monthly case counts, and fit a Poisson regression with a Fourier transformation for seasonal cycles and dummy variables for year...
2017: PloS One
https://www.readbyqxmd.com/read/28559695/therapy-of-the-postinfectious-irritable-bowel-syndrome-an-update
#12
REVIEW
Teodora Iacob, Doina F Ţăţulescu, D L Dumitraşcu
After acute infectious gastroenteritis, up to thirty percent of patients present prolonged gastrointestinal symptoms and a part of those affected patients can have the diagnostic criteria for postinfectious irritable bowel syndrome. Treatment is symptom directed rather than curative and includes agents prescribed for the treatment of irritable bowel syndrome in general. Prophylaxis or early treatment of acute bacterial diarrhea may reduce the risk of postinfectious irritable bowel syndrome development by reducing the occurrence, duration, and severity of the chronic inflammation and mucosal alterations (all these believed to play an important role in disease persistence)...
2017: Clujul Medical (1957)
https://www.readbyqxmd.com/read/28544984/histo-blood-group-antigens-as-mediators-of-infections
#13
REVIEW
Julie E Heggelund, Annabelle Varrot, Anne Imberty, Ute Krengel
The critical first step of a microbial infection is usually the attachment of pathogens to host cell glycans. Targets on host tissues are in particular the histo-blood group antigens (HBGAs), which are present in rich diversity in the mucus layer and on the underlying mucosa. Recent structural and functional studies have revealed significant new insight into the molecular mechanisms, explaining why individuals with certain blood groups are at increased risk of some infections. The most prominent example of blood-group-associated diseases is cholera, caused by infection with Vibrio cholerae...
May 22, 2017: Current Opinion in Structural Biology
https://www.readbyqxmd.com/read/28544102/a-multicenter-retrospective-case-cohort-study-of-the-epidemiology-and-risk-factors-for-clostridium-difficile-infection-among-cord-blood-transplant-recipients
#14
Carolyn D Alonso, David A Braun, Ishan Patel, Mona Akbari, Daniel Jungmyung Oh, Tomi Jun, Malgorzata McMasters, Sarah P Hammond, Brett Glotzbecker, Corey Cutler, Daniel Leffler, Karen K Ballen, Ciarán P Kelly
BACKGROUND: Clostridium difficile infection (CDI) is the leading cause of health-care associated infectious diarrhea. The aim of this study was to evaluate the epidemiology and risk factors for CDI in the 100 days following umbilical cord blood transplantation (UCBT) at three Boston hospitals. METHODS: We performed a multicenter, retrospective, case-cohort study of 226 UCBT recipients at Beth Israel Deaconess Medical Center, Massachusetts General Hospital, and Dana Farber/Brigham and Women's Cancer Center from 2003-2012...
May 24, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28540291/evaluation-of-two-dry-commercial-therapeutic-diets-for-the-management-of-feline-chronic-gastroenteropathy
#15
Sally C Perea, Stanley L Marks, Leighann Daristotle, Patricia E Koochaki, Richard Haydock
Management of feline chronic gastroenteropathies has included intervention with both veterinary therapeutic formulas designed to manage non-specific gastrointestinal disorders and those designed with limited novel or hydrolyzed ingredients for management of food-responsive enteropathies and steroid-responsive enteropathies (inflammatory bowel disease). There have been few studies evaluating the use of dietary intervention for the management of feline chronic gastroenteropathy. This prospective, multi-center study evaluated the use of two commercially available feline veterinary therapeutic dry diets designed to manage non-specific gastrointestinal disorders in 28 cats with a history of chronic vomiting and/or diarrhea...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28539715/antiprotozoal-antibacterial-and-antidiarrheal-properties-from-the-flowers-of-chiranthodendron-pentadactylon-and-isolated-flavonoids
#16
Fernando Calzada, Teresa Juárez, Normand García-Hernández, Miguel Valdes, Oscar Ávila, Lilian Yepez Mulia, Claudia Velázquez
BACKGROUND: Chiranthodendron pentadactylon Larreat. (Sterculiaceae) is a Mexican plant used in traditional medicine for the treatment of heart disease symptoms and infectious diarrhea. OBJECTIVE: To evaluate in vitro antiprotozoal and antibacterial activities and in vivo antidiarrheal activity from the flowers of C. pentadactylon using the extract, fractions, and major isolated flavonoids. MATERIALS AND METHODS: Bioassay-guided fractionation of the methanol extract of C...
April 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28537439/phenotypic-and-genotypic-characterization-of-clinical-enterotoxigenic-escherichia-coli-isolates-from-shenzhen-china
#17
Yinghui Li, Qiang Luo, Xiaolu Shi, Yiman Lin, Yaqun Qiu, Dongyue Lv, Yixiang Jiang, Qiongcheng Chen, Min Jiang, Hanwu Ma, Jinquan Cheng, Qinghua Hu
BACKGROUND: Enterotoxigenic Escherichia coli (ETEC) is one of the major causes of infectious diarrhea in developing countries. This study aimed to characterize the prevalence and phenotypic and genotypic features of ETEC isolates from Shenzhen, China. METHODS: ETEC isolates were obtained from acute diarrheal patients and evaluated for enterotoxin, classical colonization factors (CFs), serotypes, antimicrobial susceptibility, and multilocus sequencing typing (MLST)...
June 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28536684/gastrointestinal-cytomegalovirus-disease-in-a-patient-with-pemphigus-vulgaris-treated-with-corticosteroid-and-mycophenolate-mofetil
#18
Luiza Barbosa Oliveira, Celina Wakisaka Maruta, Denise Miyamoto, Fernanda Aburesi Salvadori, Claudia Giuli Santi, Valeria Aoki, Amaro Nunes Duarte-Neto
Pemphigus vulgaris is an autoimmune disease characterized by the formation of suprabasal intra-epidermal blisters on the skin and mucosal surfaces. Infectious diseases are the main cause of death in patients with pemphigus due to the disrupture of the physiological skin barrier, immune dysregulation, and the use of immunosuppressive medications leaving the patient prone to acquire opportunistic infections. We report the case of a 67-year-old woman diagnosed with pemphigus vulgaris, who was irregularly taking prednisone and mycophenolate mofetil...
January 2017: Autopsy & case reports
https://www.readbyqxmd.com/read/28527248/-clinical-and-demographic-profile-and-risk-factors-for-clostridium-difficile-infection
#19
Carlos Carvajal, Carlos Pacheco, Fabián Jaimes
INTRODUCTION: Clostridium difficile infection is the leading cause of nosocomial infectious diarrhea. The increasing incidence added to a lower rate of response to the initial treatment and higher rates of relapse has generated a higher burden of the disease. OBJECTIVE: To determine the clinical characteristics of hospitalized patients with C. difficile infection. MATERIALS AND METHODS: We made a nested case-cohort study. We reviewed medical records of the patients with nosocomial diarrhea for whom an assay for toxin A-B of C...
January 24, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28520996/epidemiology-of-travellers-diarrhea
#20
Robert Steffen
Background: Travellers' diarrhea (TD) continues to be the most frequent health problem in travellers with destinations in lower income parts of the world as compared with where they reside, even if that risk has slightly decreased. Methods: A systematic review was published 18 months ago; now PubMed was searched for more recent publications relating to travel, diarrhea, epidemiology, incidence, risk. Results: A trend to decreasing incidence rates have been noted in this as compared with the last century, but TD remains frequent...
April 1, 2017: Journal of Travel Medicine
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