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travelers' diarrhea

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https://www.readbyqxmd.com/read/28804515/mmx-%C3%A2-technology-and-its-applications-in-gastrointestinal-diseases
#1
REVIEW
Silvia Nardelli, Laura Francesca Pisani, Gian Eugenio Tontini, Maurizio Vecchi, Luca Pastorelli
The Multimatrix(®) (MMX(®)) preparation MMX(®) is a recently obtained drug formulation developed to facilitate release of high concentrations of active drugs into the colon, with a homogeneous distribution along all colonic segments, particularly the most distal ones; the distal colonic tracts, indeed, are the most difficult to reach in significant amounts when a drug is given orally. The MMX(®) formulation is characterized by a lipophilic matrix dispersed in a hydrophilic structure. Indeed, in the last few years, MMX(®) technology has been widely used in the development of various drugs for the treatment of inflammatory and infectious gastrointestinal diseases localized in the colon...
July 2017: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/28802231/phytochemical-properties-and-pharmacological-effects-of-quercus-ilex-l-aqueous-extract-on-gastrointestinal-physiological-parameters-in-vitro-and-in-vivo
#2
Kaïs Rtibi, Imen Hammami, Slimen Selmi, Dhekra Grami, Hichem Sebai, Mohamed Amri, Lamjed Marzouki
INTRODUCTION: Several research studies have reported on the pharmacological relevance of the medicinal plants used for treating various gastrointestinal disorders and controlling the dietary glucose uptake in the intestinal tract. METHODS: Male rats were used to investigate the pharmacological effects of green oak acorn aqueous extract (GOAE) on gastrointestinal physiological parameters in vivo and in vitro. In this respect, the gastro-intestinal motility and hypersecretion essays were evaluated using a simple test meal (10% charcoal in 5% gum arabic) and castor oil induced diarrhea...
August 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28794575/caregiver-decision-making-household-response-to-child-illness-in-sub-saharan-africa
#3
Hayley Pierce, Ashley Larsen Gibby, Renata Forste
We draw upon a framework outlining household recognition and response to child illness proposed by Colvin and colleagues (2013) to examine factors predictive of treatment sought for a recent child illness. In particular, we model whether no treatment, middle layer treatment (traditional healer, pharmacy, community health worker, etc.), or biomedical treatment was sought for recent episodes of diarrhea, fever, or cough. Based on multinomial, multilevel analyses of Demographic and Health Surveys from 19 countries in sub-Saharan Africa, we determine that if women have no say in their own healthcare, they are unlikely to seek treatment in response to child illness...
October 2016: Population Research and Policy Review
https://www.readbyqxmd.com/read/28742106/epidemiology-of-enteroaggregative-escherichia-coli-infections-and-associated-outcomes-in-the-mal-ed-birth-cohort
#4
MULTICENTER STUDY
Elizabeth T Rogawski, Richard L Guerrant, Alexandre Havt, Ila F N Lima, Pedro H Q S Medeiros, Jessica C Seidman, Benjamin J J McCormick, Sudhir Babji, Dinesh Hariraju, Ladaporn Bodhidatta, Jasmin Shrestha, Japhat Anania, Athanasia Maro, Amidou Samie, Pablo Peñataro Yori, Shahida Qureshi, Mustafa Mahfuz, Pascal O Bessong, Margaret N Kosek, Tahmeed Ahmed, Zulfiqar A Bhutta, Dennis R Lang, Michael Gottlieb, Eric R Houpt, Aldo A M Lima
BACKGROUND: Enteroaggregative E. coli (EAEC) have been associated with mildly inflammatory diarrhea in outbreaks and in travelers and have been increasingly recognized as enteric pathogens in young children with and without overt diarrhea. We examined the risk factors for EAEC infections and their associations with environmental enteropathy biomarkers and growth outcomes over the first two years of life in eight low-resource settings of the MAL-ED study. METHODS: EAEC infections were detected by PCR gene probes for aatA and aaiC virulence traits in 27,094 non-diarrheal surveillance stools and 7,692 diarrheal stools from 2,092 children in the MAL-ED birth cohort...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28721104/case-report-of-a-computerized-tomography-sign-in-strongyloides-stercoralis-infection
#5
Sandeep Yerra, Pradeep Yarra
This is a case of strongyloidiasis showing colon enhancement on a computerized tomography (CT) scan. The patient presented with chief complaints of diarrhea and abdominal pain. She gave a history of recent travel to El Salvador and her stool was positive for Strongyloides stercoralis. A CT scan revealed a circumferential enhancement of the sigmoid colon. This CT sign was unusual in strongyloidiasis and when combined with the symptoms, caused us to rule out inflammatory bowel disease and shock bowel. Stool examination revealed ova and parasites of Strongyloides stercoralis...
2017: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/28719282/travelers-diarrhea-and-other-gastrointestinal-symptoms-among-boston-area-international-travelers
#6
Rhett J Stoney, Pauline V Han, Elizabeth D Barnett, Mary E Wilson, Emily S Jentes, Christine M Benoit, William B MacLeod, Davidson H Hamer, Lin H Chen
AbstractThis prospective cohort study describes travelers' diarrhea (TD) and non-TD gastrointestinal (GI) symptoms among international travelers from the Boston area, the association of TD with traveler characteristics and dietary practices, use of prescribed antidiarrheal medications, and the impact of TD and non-TD GI symptoms on planned activities during and after travel. We included adults who received a pre-travel consultation at three Boston-area travel clinics and who completed a three-part survey: pre-travel, during travel, and post-travel (2-4 weeks after return)...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28716461/chronic-diarrhea-in-a-traveler-cyclosporiasis
#7
Simant Singh Thapa, Buddha Basnyat
No abstract text is available yet for this article.
July 14, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28697313/rifamycin-sv-mmx-for-the-treatment-of-traveler-s-diarrhea
#8
Shu-Wen Lin, Chun-Jung Lin, Jyh-Chin Yang
Rifamycin SV MMX®, a non-absorbable rifamycin antibiotic formulated using the multi-matrix system, was designed to exhibit its pharmacological action on the distal small intestine and colon. Its clinical efficacy and safety profile in the treatment of traveler's diarrhea were evaluated in several clinical studies. Areas covered: This review summarizes all available evidence regarding clinical trials of the efficacy and safety profile of rifamycin SV MMX for the treatment of traveler's diarrhea. Expert opinion: Rifamycin SV MMX demonstrated an excellent pharmacokinetic profile with decreased systemic toxicity similar to rifaximin...
July 27, 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28652197/emergence-of-drug-resistant-bacteria-at-the-hajj-a-systematic-review
#9
REVIEW
Thongpan Leangapichart, Jean-Marc Rolain, Ziad A Memish, Jaffar A Al-Tawfiq, Philippe Gautret
BACKGROUND: Hajj is the annual mass gathering of Muslims, and is a reservoir and potential source of bacterial transmission. The emergence of bacterial transmission, including multi-drug resistance (MDR) bacteria, during Hajj has not been systematically assessed. METHODS: Articles in Pubmed, Scopus, and Google scholar were identified using controlled words relating to antibiotic resistance (AR) at the Hajj from January 2002 to January 2017. Eligible studies were identified by two researchers...
June 23, 2017: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/28642847/heat-labile-enterotoxin-induced-perk-chop-pathway-activation-causes-intestinal-epithelial-cell-apoptosis
#10
Xi Lu, Chunmeng Li, Congcong Li, Pengcheng Li, Enqing Fu, Yonghong Xie, Faguang Jin
Enterotoxigenic Escherichia coli (ETEC) is a leading cause of diarrhea among children and travelers in developing countries, and heat-labile enterotoxin (LT) is one of the most important virulence factors. The pathogenesis of and virulence factors associated with ETEC have been well-characterized; however, the extent to which ETEC damages host cells remains unclear. In this study, we found that LT could induce decreases in intestinal epithelial cell viability and induce apoptosis in a dose- and time- dependent manner in both HCT-8 and Caco-2 cells...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28637804/bioactive-immune-components-of-anti-diarrheagenic-enterotoxigenic-e-coli-etec-hyperimmune-bovine-colostrum-products
#11
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/28627855/multiplex-pcr-gastro-intestinal-panels-for-the-management-of-traveller-s-diarrhea-are-they-accurate-and-useful
#12
Laurence Rochat, Antony Croxatto, Serge De Vallière, Valérie D'Acremont, Blaise Genton
Until recently, the search for enteropathogens causing travellers' diarrhea was based on stool culture (Campylobacter spp., Salmonella spp. and Shigella spp.), direct microscopy with (Cryptosporidium spp.) or without specific staining (Giardia lamblia, Entamoeba histolytica) or specific antigen detection (Giardia lamblia, Entamoeba histolytica). Molecular analyses are progressively replacing traditional diagnostic methods but their clinical usefulness remains to be better defined. This article attempts to describe the advantages and disadvantages of these new molecular methods and to illustrate situations where they could be useful using clinical cases frequently encountered in the practice of travel medicine...
May 3, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28623550/antibiotic-susceptibility-profiles-among-campylobacter-isolates-obtained-from-international-travelers-between-2007-and-2014
#13
A Post, D Martiny, N van Waterschoot, M Hallin, U Maniewski, E Bottieau, M Van Esbroeck, E Vlieghe, S Ombelet, O Vandenberg, J Jacobs
Campylobacter infection is a common cause of diarrhea among international travelers. We studied antibiotic resistance patterns among Campylobacter isolates obtained from international travelers according to travel destination. Three collections of isolates obtained from international travelers between 2007 and 2014 (Institute of Tropical Medicine, the "Laboratoire Hospitalier Universitaire de Bruxelles "and the Belgian National Reference Centre for Campylobacter) were used. Isolates were tested for minimal inhibitory concentration (MIC) values (E-test macromethod) for fluoroquinolones, macrolides, tetracyclines, amoxicillin-clavulanic acid, and meropenem...
June 17, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28557971/-travels-and-spreading-of-multi-resistant-bacteria
#14
REVIEW
Aneta Nitsch-Osuch
The increasing number of international travel for tourism, business and for medical reasons rises the risk of spreading of multi-resistant bacteria. It has been shown that an intercontinental travel, mainly to Asia (Indian Subcontinent), promotes a colonization of the digestive tract, mainly by multi-resistant Enterobacteriaceae (MRE) and increases the risk of symptomatic infections caused by these agents. The colonization of the digestive tract by MRE is reported in 29-88% of travelers. It sustains 3 to 12 months, respectively in 10% and 2% of travelers...
May 23, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28549055/is-it-worth-adding-loperamide-to-antibiotic-treatment-of-traveler%C3%A2-s-diarrhea
#15
Yazmín Pinos, María Isabel Ruiz, Óscar Corsi, Gabriel Rada
Travelers' diarrhea is a frequent condition, especially in those traveling to high-risk areas. Although antibiotic treatment reduces the duration of diarrhea, it has been suggested adding loperamide could further reduce the symptoms. To answer this question we used Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others. We identified two systematic reviews including 28 studies overall, of which 15 were randomized trials relevant for the question of interest...
May 23, 2017: Medwave
https://www.readbyqxmd.com/read/28544984/histo-blood-group-antigens-as-mediators-of-infections
#16
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/28543534/a-chimeric-protein-of-cfa-i-cs6-subunits-and-ltb-sta-toxoid-protects-immunized-mice-against-enterotoxigenic-escherichia-coli
#17
Narges Zeinalzadeh, Ali Hatef Salmanian, Goli Goujani, Jafar Amani, Ghasem Ahangari, Asal Akhavian, Mahyat Jafari
Enterotoxigenic Escherichia Coli (ETEC) strains are the commonest bacteria causing diarrhea in children in developing countries and travelers to these areas. Colonization factors (CFs) and enterotoxins are the main virulence determinants in ETEC pathogenesis. Heterogeneity of CFs is commonly considered the bottleneck to developing an effective vaccine. It is believed that broad spectrum protection against ETEC would be achieved by induced anti-CF and anti-enterotoxin immunity simultaneously. Here, a fusion antigen strategy was used to construct a quadrivalent recombinant protein called 3CL and composed of CfaB, a structural subunit of CFA/I, and CS6 structural subunits, LTB and STa toxoid of ETEC...
July 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/28527648/a-case-of-amebiasis-with-negative-serologic-markers-that-caused-intra-abdominal-abscess
#18
Rie Tanaka, Norihiro Furusyo, Rinne Takeda, Sho Yamasaki, Akira Kusaga, Eiichi Ogawa, Masayuki Murata, Ryota Nakanishi, Yoshihiko Maehara
A 23-year-old Japanese woman presented with abdominal distention following fever, diarrhea, and abdominal pain during a stay in Taiwan. Serology for the detection of amebic-antibodies and stool microscopic examination were both negative. A computed tomography scan showed a 13 cm diameter abscess spreading from the lower abdominal wall to the pelvic retroperitoneal space. Needle aspiration of the abscess was done under computed tomography guidance, and microscopy of the aspirated fluid revealed trophozoites of Entamoeba...
May 17, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28527491/development-of-live-attenuated-bacterial-vaccines-targeting-escherichia-coli-heat-labile-and-heat-stable-enterotoxins
#19
Chengru Zhu, Prashanth Setty, Edgar C Boedeker
Enterotoxigenic Escherichia coli (ETEC), defined by the production of heat labile (LT) and/or heat stable (ST) toxins, are major causes of diarrhea in animals, children in developing countries and to travelers. No broadly protective ETEC vaccine is available, largely because of the difficulty in inducing immunity to the small ST molecule. To take advantage of the demonstration (Liu et al., 2011; Zhang et al., 2013, 2010) that genetically produced fusions of mutant ST with LT subunits can induce effective immunity against both toxins, we engineered a live attenuated vaccine vector strain of E...
April 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28521004/guidelines-for-the-prevention-and-treatment-of-travelers-diarrhea-a-graded-expert-panel-report
#20
Mark S Riddle, Bradley A Connor, Nicholas J Beeching, Herbert L DuPont, Davidson H Hamer, Phyllis Kozarsky, Michael Libman, Robert Steffen, David Taylor, David R Tribble, Jordi Vila, Philipp Zanger, Charles D Ericsson
Background: : Travelers' diarrhea causes significant morbidity including some sequelae, lost travel time and opportunity cost to both travelers and countries receiving travelers. Effective prevention and treatment are needed to reduce these negative impacts. Methods: : This critical appraisal of the literature and expert consensus guideline development effort asked several key questions related to antibiotic and non-antibiotic prophylaxis and treatment, utility of available diagnostics, impact of multi-drug resistant (MDR) colonization associated with travel and travelers' diarrhea, and how our understanding of the gastrointestinal microbiome should influence current practice and future research...
April 1, 2017: Journal of Travel Medicine
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