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Noelia Lopez Montero, Jost Enninga
Small GTPases of the Rab protein family control intracellular vesicular trafficking to allow their communication and maintenance. It is a common strategy for intracellular bacteria to exploit these pathways to shape their respective niches for survival. The subversion of Rabs for the generation of an intracellular environment favoring the pathogen has been described almost exclusively for intracellular bacteria that reside within bacterial containing vacuoles (BCVs). However, less is known about Rab subversion for bacteria that rupture the BCV to reach the host cytoplasm...
October 20, 2016: Small GTPases
Jianing Liu, Xiaoxu Wu, Chenlu Li, Bing Xu, Luojia Hu, Jin Chen, Shuang Dai
Climate change mainly refers to long-term change in weather variables, and it has significant impact on sustainability and spread of infectious diseases. Among three leading infectious diseases in China, dysentery is exclusively sensitive to climate change. Previous researches on weather variables and dysentery mainly focus on determining correlation between dysentery incidence and weather variables. However, the contribution of each variable to dysentery incidence has been rarely clarified. Therefore, we chose a typical county in epidemic of dysentery as the study area...
October 11, 2016: Science of the Total Environment
Rapeephan R Maude, Aniruddha Ghose, Rasheda Samad, Hanna K de Jong, Masako Fukushima, Lalith Wijedoru, Mahtab Uddin Hassan, Md Amir Hossain, Md Rezaul Karim, Abdullah Abu Sayeed, Stannie van den Ende, Sujat Pal, A S M Zahed, Wahid Rahman, Rifat Karnain, Rezina Islam, Dung Thi Ngoc Tran, Tuyen Thanh Ha, Anh Hong Pham, James I Campbell, H Rogier van Doorn, Richard J Maude, Tom van der Poll, W Joost Wiersinga, Nicholas P J Day, Stephen Baker, Arjen M Dondorp, Christopher M Parry, Md Abul Faiz
BACKGROUND: Fever is a common cause of hospital admission in Bangladesh but causative agents, other than malaria, are not routinely investigated. Enteric fever is thought to be common. METHODS: Adults and children admitted to Chittagong Medical College Hospital with a temperature of ≥38.0 °C were investigated using a blood smear for malaria, a blood culture, real-time PCR to detect Salmonella Typhi, S. Paratyphi A and other pathogens in blood and CSF and an NS1 antigen dengue ELISA...
October 13, 2016: BMC Infectious Diseases
Qing Zhao, Xiao-Ya Chen, Cathie Martin
Scutellaria baicalensis Georgi, or Chinese skullcap, has been widely used as a medicinal plant in China for thousands of years, where the preparation from its roots is called Huang-Qin. It has been applied in the treatment of diarrhea, dysentery, hypertension, hemorrhaging, insomnia, inflammation and respiratory infections. Flavones such as baicalin, wogonoside and their aglycones baicalein wogonin are the major bioactive compounds extracted from the root of S. baicalensis. These flavones have been reported to have various pharmacological functions, including anti-cancer, hepatoprotection, antibacterial and antiviral, antioxidant, anticonvulsant and neuroprotective effects...
2016: Science Bulletin
Manoj K Pandey, Deepkamal Karelia, Shantu G Amin
Kokum, a spice derived from the fruit of the Garcinia hanburyi tree, is traditionally used in Ayurvedic medicines to facilitate digestion and to treat sores, dermatitis, diarrhoea, dysentery, and ear infection. One of the major active components of kokum is gambogic acid, also known as guttic acid, guttatic acid, beta-guttilactone, and beta-guttiferin. Gambogic acid's anti-proliferative, anti-bacterial; antioxidant and anti-inflammatory effects result from its modulation of numerous cell-signaling intermediates...
2016: Advances in Experimental Medicine and Biology
Luis M Aller-Morán, F Javier Martínez-Lobo, Pedro Rubio, Ana Carvajal
An emerging novel spirochete in swine, provisionally designated "Brachyspira hampsonii," has been detected worldwide. It has been associated with swine dysentery and cannot be differentiated from B. hyodysenteriae, the classical etiologic agent of this disease, using standard phenotypic methods. We evaluated cross-reactions of "B. hampsonii" isolates recovered from avian species in some of the currently available species-specific polymerase chain reaction (PCR) assays for the identification of swine Brachyspira species...
November 2016: Journal of Veterinary Diagnostic Investigation
Koroush Ghanadi, Javad Valizadeh, Afshin Hasanvand
INTRODUCTION: One of the forms of inflammatory bowel disease (IBD) that causes inflammation and ulcers in colon is ulcerative colitis (UC). This study was aimed to determine the epidemiological and clinical aspects of patients with ulcerative colitis in the west of Iran. METHODS: In this cross sectional study, we evaluated 150 patients with definite diagnosis of UC who referred to a subspecialty gastroenterology clinic in Khorramabad, Iran. The study was performed from May 2014 to August 2015 by using census method...
2016: SpringerPlus
Hossein Hosseini Nave, Shahla Mansouri, Majid Taati Moghadam, Mohammad Moradi
BACKGROUND: Enteroinvasive Escherichia coli (EIEC) isolates cause dysentery in humans. Several virulence factors associated with EIEC pathogenesis have been characterized. Multilocus variable-number tandem-repeat analysis (MLVA) is a PCR-based method that has been used for genotyping bacterial pathogens. OBJECTIVES: The aim of this study was to investigate the distribution of virulence factor genes in EIEC isolates from patients with diarrhea in Kerman, Iran, as well as the genetic relationships between these isolates...
June 2016: Jundishapur Journal of Microbiology
Nandita S Mirajkar, Nyree D Phillips, Tom La, David J Hampson, Connie J Gebhart
Swine dysentery (SD) is a mucohemorhagic colitis of swine classically caused by infection with the intestinal spirochete Brachyspira hyodysenteriae. Since around 2007, cases of SD have occurred in North America associated with a different strongly beta-hemolytic spirochete that has been molecularly and phenotypically characterized and provisionally named "Brachyspira hampsonii". Despite increasing international interest, "B. hampsonii" is currently not recognized as a valid species. To support its recognition, we sequenced the genomes of strains NSH-16, NSH-24 and P280/1, representing "B...
September 14, 2016: Journal of Clinical Microbiology
K Sunil Raviraj, P Miglani, A Garg, P K Agarwal
Mucormycosis, is an emerging fungal infection in immunocompromised and diabetic individuals, usually affects rhino-orbito-cerebral, cutaneous and pulmonary regions. But mucormycosis in immunocompetent environment is rare and occurrence of gastric mucormycosis is unusual. We report a case of 19 year old female, with no pre-existing co-morbidities, presented with fever, dysentery, vomiting, and melena for 4 days. On evaluation she was found to have pancytopenia, acute kidney injury, hemolytic anemia, coagulopathy and hepatic derangement and treated with hemodialysis, plasmapheresis along with antibiotics and packed cell RBC transfusion...
October 2015: Journal of the Association of Physicians of India
Soumyajit Biswas, Rupa Shaw, Sanjay Bala, Asis Mazumdar
ETHNOPHARMACOLOGICAL RELEVANCE: Medicinal Plant resources of forest origin are extensively used in India for various systems of medicine like Ayurveda, Unani, Homeopathy, Allopathy, Siddha and Ethnic etc. The tribal communities around the Kakrajhore forest in West Medinipur district of West Bengal have their own traditional knowledge based system of curing many diseases using the forest based plant resources similar to ayurveda. The forest comprises of one of the unique treasure and rich source of diversified ethno-botanical wealth and therefore extensive studies is required for proper documentation including ethnomedicinal knowledge of local tribes...
August 30, 2016: Journal of Ethnopharmacology
Alynne da Silva Barbosa, Otilio Machado Pereira Bastos, Claudia Maria Antunes Uchôa, Alcides Pissinatti, Augusto César Machado Pereira Bastos, Igo Vieira de Souza, Laís Verdan Dib, Eduarda Peixoto Azevedo, Mayara Perlingeiro de Siqueira, Matheus Lessa Cardozo, Maria Regina Reis Amendoeira
Balantidium coli is a protozoon that can cause dysentery in humans, pigs and nonhuman primates, with zoonotic potential. In the literature, there is still little information on the effectiveness of different laboratory techniques for diagnosing this disease. This study compared and evaluated the performance of the Lutz, modified Ritchie, Faust, modified Sheather and direct examination techniques for detecting cysts of this protozoon. Between 2012 and 2014, 1905 fecal samples were collected from captive animals in the state of Rio de Janeiro...
July 2016: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
Atsebaha Gebrekidan Kahsay, Saravanan Muthupandian
BACKGROUND: Shigella, gram negative bacterium, is responsible for Shigellosis/bacillary dysentery. It is a global concern although it predominates in developing countries. These are Shigella dysenteriae, Shigella flexneri, Shigella boydii and Shigella sonnei. Drug resistance by Shigella species is another headache of the world. Therefore; this study aimed to review distribution of Shigella Serogroups and their antimicrobial patterns carried out in Africa, Asia and South America. METHODS: A literature search was performed to identify published studies between January 2001 and December 2014...
2016: BMC Research Notes
Elisabeth Njamkepo, Nizar Fawal, Alicia Tran-Dien, Jane Hawkey, Nancy Strockbine, Claire Jenkins, Kaisar A Talukder, Raymond Bercion, Konstantin Kuleshov, Renáta Kolínská, Julie E Russell, Lidia Kaftyreva, Marie Accou-Demartin, Andreas Karas, Olivier Vandenberg, Alison E Mather, Carl J Mason, Andrew J Page, Thandavarayan Ramamurthy, Chantal Bizet, Andrzej Gamian, Isabelle Carle, Amy Gassama Sow, Christiane Bouchier, Astrid Louise Wester, Monique Lejay-Collin, Marie-Christine Fonkoua, Simon Le Hello, Martin J Blaser, Cecilia Jernberg, Corinne Ruckly, Audrey Mérens, Anne-Laure Page, Martin Aslett, Peter Roggentin, Angelika Fruth, Erick Denamur, Malabi Venkatesan, Hervé Bercovier, Ladaporn Bodhidatta, Chien-Shun Chiou, Dominique Clermont, Bianca Colonna, Svetlana Egorova, Gururaja P Pazhani, Analia V Ezernitchi, Ghislaine Guigon, Simon R Harris, Hidemasa Izumiya, Agnieszka Korzeniowska-Kowal, Anna Lutyńska, Malika Gouali, Francine Grimont, Céline Langendorf, Monika Marejková, Lorea A M Peterson, Guillermo Perez-Perez, Antoinette Ngandjio, Alexander Podkolzin, Erika Souche, Mariia Makarova, German A Shipulin, Changyun Ye, Helena Žemličková, Mária Herpay, Patrick A D Grimont, Julian Parkhill, Philippe Sansonetti, Kathryn E Holt, Sylvain Brisse, Nicholas R Thomson, François-Xavier Weill
Together with plague, smallpox and typhus, epidemics of dysentery have been a major scourge of human populations for centuries(1). A previous genomic study concluded that Shigella dysenteriae type 1 (Sd1), the epidemic dysentery bacillus, emerged and spread worldwide after the First World War, with no clear pattern of transmission(2). This is not consistent with the massive cyclic dysentery epidemics reported in Europe during the eighteenth and nineteenth centuries(1,3,4) and the first isolation of Sd1 in Japan in 1897(5)...
2016: Nature Microbiology
Deeksha Singh, Uttam Singh Baghel, Anshoo Gautam, Dheeraj Singh Baghel, Divya Yadav, Jai Malik, Rakesh Yadav
ETHNOPHARMACOLOGICAL RELEVANCE: The genus Anogeissus (axlewood tree, ghatti tree, button tree and chewing stick tree) belongs to Combretaceae, includes eight species that are distributed in Asia and Africa. Plants are used as an ethnomedicine in Asia and Africa to treat various ailments like diabetes, fever, diarrhoea, dysentery, tuberculosis, wound healing, skin diseases (eczema, psoriasis), snake and scorpion venom. Based on the traditional knowledge, different phytochemical and pharmacological activities have been at the focus of research...
August 23, 2016: Journal of Ethnopharmacology
Ruth Cox, Crawford W Revie, Daniel Hurnik, Javier Sanchez
Identification and quantification of pathogen threats need to be a priority for the Canadian swine industry so that resources can be focused where they will be most effective. Here we create a tool based on a Bayesian Belief Network (BBN) to model the interaction between biosecurity practices and the probability of occurrence of four different diseases on Canadian swine farms. The benefits of using this novel approach, in comparison to other methods, is that it enables us to explore both the complex interaction and the relative importance of biosecurity practices on the probability of disease occurrence...
September 1, 2016: Preventive Veterinary Medicine
Nandita S Mirajkar, Timothy J Johnson, Connie J Gebhart
Reported herein is the complete genome sequence of the type strain B-78 (ATCC 27164) of Brachyspira hyodysenteriae, the etiological agent of swine dysentery. The 3.1-Mb genome consists of a 3.056-Mb chromosome and a 45-kb plasmid, with 2,617 protein-coding genes, 39 RNA genes, and 40 pseudogenes.
2016: Genome Announcements
Farah Naz Qamar, Muhammad Imran Nisar, Farheen Quadri, Sadia Shakoor, Samba O Sow, Dilruba Nasrin, William C Blackwelder, Yukun Wu, Tamer Farag, Sandra Panchalingham, Dipika Sur, Shahida Qureshi, Abu S G Faruque, Debasish Saha, Pedro L Alonso, Robert F Breiman, Quique Bassat, Boubou Tamboura, Thandavarayan Ramamurthy, Suman Kanungo, Shahnawaz Ahmed, Anowar Hossain, Sumon K Das, Martin Antonio, M Jahangir Hossain, Inacio Mandomando, Sharon M Tennant, Karen L Kotloff, Myron M Levine, Anita K M Zaidi
We report the clinical findings, epidemiology, and risk factors for moderate-to-severe diarrhea (MSD) associated with Aeromonas species in children 0-59 months of age, from the Global Enteric Multicenter Study, conducted at three sites in south Asia and four sites in sub-Saharan Africa. Children with MSD were enrolled along with controls matched for age, gender, and neighborhood. Pooled, age-stratified conditional logistic regression models were applied to evaluate the association of Aeromonas infection controlling for coinfecting pathogens and sociodemographic variables...
October 5, 2016: American Journal of Tropical Medicine and Hygiene
Stacey L Burgess, William A Petri
Entamoeba histolytica, the etiological agent of amebiasis, is a significant cause of pediatric diarrhea in South Asia and sub-Saharan Africa. The clinical outcome of an E. histolytica exposure varies enormously and can present as diarrhea, dysentery, or amebic liver abscess. Host and parasite factors likely contribute to the outcome of infection with the parasite, but do not explain the wide variation in presentation of disease. This suggests that other environmental factors affect disease. An emerging body of work suggests that the host intestinal bacterial microbiome may have a significant influence on the development and outcome of amebiasis...
2016: Current Tropical Medicine Reports
C Kirchgässner, S Schmitt, A Borgström, M M Wittenbrink
Brachyspira (B.) hyodysenteriae is the causative agent of swine dysentery (SD), a severe mucohaemorrhagic diarrheal disease in pigs worldwide. So far, the antimicrobial susceptibility patterns of B. hyodysenteriae in Switzerland have not been investigated. Therefore, a panel of 30 porcine B. hyodysenteriae isolates were tested against 6 antimicrobial agents by using the VetMIC Brachy panel, a broth microdilution test. Tiamulin and valnemulin showed high antimicrobial activity inhibiting all isolates at low concentrations...
June 2016: Schweizer Archiv Für Tierheilkunde
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