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Blastocystis hominis

Heber Silva-Díaz, Lorena Flores-Esqueche, Dunalia Llatas-Cancino, Génesis Guevara Vásquez, Teresa Silva-García
OBJECTIVE: To describe the frequency and antiparasitic in vitro susceptibility of Blastocystis hominis in patients admitted to theHospital Regional Lambayeque, Peru. MATERIAL AND METHODS: A cross-sectional study was conducted from January to August 2015 at 313 patients of all ages. B. hominis detection was performed on serial fecal samples by direct microscopic examination and microculture in modified Locke solution. The in vitro susceptibility testing against the drug metronidazole, nitazoxanide, trimethoprim-sulfamethoxazole and erythromycin was performed in 24 strains of B...
July 2016: Revista de Gastroenterología del Perú: órgano Oficial de la Sociedad de Gastroenterología del Perú
Valerio Iebba, Floriana Santangelo, Valentina Totino, Fabrizio Pantanella, Anatole Monsia, Veronica Di Cristanziano, David Di Cave, Serena Schippa, Federica Berrilli, Rossella D'Alfonso
INTRODUCTION: Literature data provide little information about protozoa infections and gut microbiota compositional shifts in humans. This preliminary study aimed to describe the fecal bacterial community composition of people from Côte d'Ivoire harboring Giardia duodenalis, Entamoeba spp., and Blastocystis hominis, in trying to discover possible alterations in their fecal microbiota structure related to the presence of such parasites. METHODOLOGY: Twenty fecal samples were collected from people inhabiting three different localities of Côte d'Ivoire for copromicroscopic analysis and molecular identification of G...
September 30, 2016: Journal of Infection in Developing Countries
Liliana Simões-Silva, Inês Correia, Joana Barbosa, Carla Santos-Araujo, Maria João Sousa, Manuel Pestana, Isabel Soares-Silva, Benedita Sampaio-Maia
Currently, chronic kidney disease (CKD) is a global health problem. Considering the impaired immunity of CKD patients, the relevance of infection in peritoneal dialysis (PD), and the increased prevalence of parasites in CKD patients, protozoa colonization was evaluated in PD effluent from CKD patients undergoing PD. Overnight PD effluent was obtained from 49 asymptomatic stable PD patients. Protozoa analysis was performed microscopically by searching cysts and trophozoites in direct wet mount of PD effluent and after staining smears...
September 2016: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
Rasool Jafari, Forough Sharifi, Bahram Bagherpour, Marzieh Safari
Intestinal parasites are important enteric pathogens. Poverty, low quality of food and water supply and poor sanitation systems are the important factors associated with intestinal parasitic infections. These kinds of infections can be a good index for hygienic and sanitation status of the society. This study aimed to determine the prevalence of intestinal parasitic infections among humans referred to Dr. Sharifi Clinical Laboratory, Isfahan, Iran, 2014. In this cross sectional study, 652 fecal samples (286 males and 366 females) from humans who had stool examination test from January to August 2014 were chosen...
September 2016: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
Catalina Ibarra, Valentina Herrera, Edith Pérez de Arce, Luis Carlos Gil, Ana María Madrid, Lucía Valenzuela, Caroll J Beltrán
Irritable bowel syndrome (IBS) is a functional disorder of the gastrointestinal tract characterised by multi-factorial aetiology. In IBS physiopathology are involved diverse factors between them biological, psychosocial, and environmental components which affect the immune activation status of gut mucosa. Among these factors is recognized the intestinal parasitosis. Post-infection IBS (PI-IBS) is recognised as a subgroup of functional disorders whose symptoms onset appear after a symptomatic intestinal infection caused by microbial agents...
June 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
Kyle I G Fletcher, Pieter van West, Claire M M Gachon
Cadherins, a group of molecules typically associated with planar cell polarity and Wnt signalling, have been little reported outside of the animal kingdom. Here, we identify a new family of cadherins in the Stramenopiles, termed Nonagonal after their 9 transmembrane passes, which contrast to the one or seven passes found in other known cadherin families. Manual curation and experimental validation reveal two subclasses of nonagonal cadherins, depending on the number of uninterrupted extracellular cadherin (EC) modules presented...
November 15, 2016: Gene
Marawan A Abu-Madi, Jerzy M Behnke, Sonia Boughattas, Asma Al-Thani, Sanjay H Doiphode
BACKGROUND: The World Health Organization estimates that about 3.5 billion people worldwide are affected by intestinal parasitic infections. Reports have already emphasized the role of immigrants in outbreaks of parasitic diseases in industrialized countries. With the mass influx of immigrants to Qatar, patent intestinal parasitic infections have been observed. Herein, the prevalence of intestinal protozoan infections was analysed in 29,286 records of subjects referred for stool examination at the Hamad Medical Corporation over the course of a decade (2005 to 2014, inclusive)...
2016: BMC Infectious Diseases
George Vasquez-Rios, Jorge D Machicado, Angelica Terashima, Luis A Marcos
Irritable bowel syndrome (IBS) is a functional gastrointestinal disorder of uncertain etiology. Several studies have proposed the possible role of intestinal parasites in the pathogenesis of IBS. We aimed to summarize the epidemiological studies that describe a possible link between intestinal parasites and IBS, with special interest in endemic areas for intestinal parasitism such as South America. A comprehensive review of the literature was conducted by using the keywords: irritable bowel syndrome, intestinal parasites, protozoan infection, soil-transmitted helminths and South America...
April 2016: Revista de Gastroenterología del Perú: órgano Oficial de la Sociedad de Gastroenterología del Perú
Rito Zerpa Larrauri, Alina Huiza, Celia Paucar, Yrma Espinoza, César Cabezas
No abstract text is available yet for this article.
March 2016: Revista Peruana de Medicina Experimental y Salud Pública
Omima M Eida, Hanaa A El-Shafei, Yousra A Nomeir, Mohammed B El Safhi
Metronidazole (MTZ) was the most widely accepted treatment for Blastocystis hominis (B. hominis) with high treatment failure rate, resistance and potential mutagenic and carcinogenic effects so there is urgent need to find out new, effective and safe treatment against B. hominis. The present research aimed to evaluate the therapeutic effect of the aqueous extract of Nigella sativa (NS) at different doses on B. hominis in vitro and in vivo in comparison to MTZ as a control drug. Isolates of B. hominis were obtained from patients complaining of diarrhea and abdominal pain...
April 2016: Journal of the Egyptian Society of Parasitology
Ying-fang Yu, Xiu-ping Wu, Yan-hong Chu, Jia-xu Chen, Li-guang Tian
OBJECTIVE: To observe the growth situation of Blastocystis hominis in vitro and select the optimal method for cultivation of B. hominis in different media. METHODS: Ten positive stools with B. hominis were inoculated in three different media for cultivating, namely 1640, Jone's medium and vitro medium. And the stools with good growth status and high quantities of B. hominis were chosen to inoculate in the three media with equal amount after subcultivation, and the number of B...
February 2016: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
Shun-Xian Zhang, Yong-Ming Zhou, Wen Xu, Li-Guang Tian, Jia-Xu Chen, Shao-Hong Chen, Zhi-Sheng Dang, Wen-Peng Gu, Jian-Wen Yin, Emmanuel Serrano, Xiao-Nong Zhou
BACKGROUND: Acute diarrhea is a global health problem, resulting in high morbidity and mortality in children. It has been suggested that enteric pathogen co-infections play an important role in gastroenteritis, but most research efforts have only focused on a small range of species belonging to a few pathogen groups. This study aimed to assess the impact of co-infections with a broad range of enteric pathogens on children aged below five years who suffer from acute diarrhea in southwest China...
2016: Infectious Diseases of Poverty
Salih Maçin, Filiz Kaya, Deniz Çağdaş, Hayriye Hizarcioglu-Gulsen, Inci Nur Saltik-Temizel, İlhan Tezcan, Hülya Demir, Sibel Ergüven, Yakut Akyön
The aim of this study was to investigate the frequency of intestinal parasites in patients with chronic diarrhea and clarify the importance of these parasitic pathogens in such cases. A total of 60 pediatric patients with chronic diarrhea between June 2012 and October 2014 were enrolled in the study. Out of 60 stool samples, five were positive for Giardia lamblia, two, Dientamoeba fragilis, and one, Blastocystis hominis. One stool sample was positive for Entamoeba hartmanni and B. hominis, another one was positive for G...
June 2016: Pediatrics International: Official Journal of the Japan Pediatric Society
Judit Plutzer, Panagiotis Karanis
Outbreak incidents raise the question of whether the less frequent aetiological agents of outbreaks are really less frequent in water. Alternatively, waterborne transmission could be relevant, but the lack of attention and rapid, sensitive methods to recover and detect the exogenous stages in water may keep them under-recognized. High quality information on the prevalence and detection of less frequent waterborne protozoa, such as Cyclospora cayetanensis, Toxoplasma gondii, Isospora belli, Balantidium coli, Blastocystis hominis, Entamoeba histolytica and other free-living amoebae (FLA), are not available...
September 15, 2016: Water Research
Ursel Heudorf, Maria Karathana, Bernhard Krackhardt, Meike Huber, Peter Raupp, Christian Zinn
In 2015, most of the refugees arriving in Germany originated from countries with poor hygienic and sanitary conditions. Stool samples of 1,230 minor refugees unaccompanied by adults were investigated for possible parasites. Giardia lamblia was by far the most frequently detected parasite (n=165); all other parasites were considerably less frequent and encountered in the following order: Hymenolepis nana (n=23), Entamoeba histolytica (n=17), Trichuris trichiura (n=8), and Blastocystis hominis (n=1). Ascaris lumbricoides was not detected among any of the screened refugees...
2016: GMS Hygiene and Infection Control
Gloria Echagüe, Liliana Sosa, Valentina Díaz, Irene Ruiz, Lourdes Rivas, Dominich Granado, Patricia Funes, Jorge Zenteno, Norma Pistilli, Mirtha Ramírez
BACKGROUND: Official figures of mortality in children under five years of age in the Americas, report that infectious and parasitic diseases caused most of the deaths. OBJECTIVE: To evaluate the frequency of intestinal parasites in vulnerable children, indigenous and non-indigenous, and their socio-environmental characteristics. PATIENTS AND METHODS: We evaluated 247 children under five years of age, of both sexes. Descriptive study with an analytical component, transverse cutting...
December 2015: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
Omar Hassen Amer, Ibraheem M Ashankyty, Najoua Al Sadok Haouas
OBJECTIVE: To evaluate the prevalence of intestinal parasites among patients in Hail, Northwestern Saudi Arabia. METHODS: Stool samples were collected from 130 patients (69 females and 61 males) in Hail General Hospital. Each sample was examined by direct wet mount microscopic examination using both normal saline and Lugol's iodine preparation and concentration techniques using salt and formol-ether solutions. Permanent stained smears were performed for intestinal coccidian using modified Ziehl-Neelsen technique...
January 2016: Asian Pacific Journal of Tropical Medicine
Marzieh Azizian, Gholam Basati, Ghobad Abangah, Mohammad Reza Mahmoudi, Asad Mirzaei
Blastocystis hominis with worldwide distribution is a human intestinal protozoa found in all countries. There have been differences in the severity of the pathogenesis of various Blastocystis spp. and a concomitant variation in the plasma concentration of the cytokines in patients with irritable bowel syndrome. In the present study, we aimed to demonstrate the contribution of B. hominis subtypes in the development of irritable bowel syndrome. Stool samples were collected from patients with gastrointestinal disorders...
May 2016: Parasitology Research
Sh Fallahi, A Rostami, M Mohammadi, F Ebrahimzadeh, Y Pournia
Students who are working in research or educational laboratories of parasitology, as well as health care workers providing care for patients, are at the risk of becoming infected with parasites through accidental exposure. The main purpose of this study was to identify potential positive cases of intestinal parasitic infections among students who took practical parasitology courses compared with students who did not take any practical parasitology courses in Lorestan University of Medical Sciences, Khorramabad, Iran, in 2013-2014...
September 2016: Journal of Infection and Public Health
Özgür Kurt, Funda Doğruman Al, Mehmet Tanyüksel
Blastocystis (initially named as Blastocystis hominis) has long been known as a protist without any clinical significance. However, there is now a huge pile of case reports where Blastocystis is blamed for the symptoms and the infection described in the patients. Introduction of the presence of as many as 17 Blastocystis subtypes while many infected individuals are non-symptomatic initially brought about the correlation between the subtypes and pathogenicity; however, the outcomes of these trials were not consistent and did not explain its pathogenicity...
January 15, 2016: Parasitology International
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