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Blastocystis sp

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https://www.readbyqxmd.com/read/28869791/proteogenomic-insights-into-the-intestinal-parasite-blastocystis-sp-subtype-4-isolate-wr1
#1
Jean Armengaud, Olivier Pible, Jean-Charles Gaillard, Amandine Cian, Nausicaa Gantois, Kevin S W Tan, Magali Chabé, Eric Viscogliosi
Blastocystis sp. is known for years as a highly prevalent anaerobic eukaryotic parasite of humans and animals. Several monophyletic clades have been delineated based on molecular data and the occurrence of each subtype (ST) in humans and/or animal hosts has been documented. The genome of several representatives has been sequenced revealing specific traits such as an intriguing 3'-end processing of primary transcripts. Here, a first high-throughput proteomics dataset acquired on this difficult to cultivate parasite is presented for the zoonotic ST4 isolate WR1...
September 4, 2017: Proteomics
https://www.readbyqxmd.com/read/28864325/first-genotyping-of-blastocystis-sp-in-dairy-meat-and-cashmere-goats-in-northwestern-china
#2
Jun-Ke Song, Yan-Ling Yin, Ya-Jie Yuan, Huan Tang, Guan-Jing Ren, Hui-Jun Zhang, Zi-Xuan Li, Yan-Ming Zhang, Guang-Hui Zhao
Blastocystis is one of the most common parasites inhabiting in small intestines of human and animals. Although its pathogenicity has been remaining controversial, the possibility of zoonotic transmission between human and animals was recognized. The goat was one of the most important economic animals supplying people with cashmere, meat, and dairy products. However, few studies were to investigate Blastocystis infection in goats. A total of 789 faecal specimens of goats (including 362 of dairy, 193 of meat and 234 of cashmere goats) were collected from multiple regions of Shaanxi province in northwestern China to investigate the colonization frequency and subtypes of Blastocystis, and to assess the zoonotic potential of these goats...
August 31, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28859095/exacerbation-of-colon-carcinogenesis-by-blastocystis-sp
#3
Vinoth Kumarasamy, Umah Rani Kuppusamy, Pailoor Jayalakshmi, Chandramathi Samudi, Nanthiney Devi Ragavan, Suresh Kumar
Colorectal cancer (CRC) is one the most commonly diagnosed cancers worldwide and the number is increasing every year. Despite advances in screening programs, CRC remains as the second leading cause of cancer deaths in the United States. Oxidative stress plays an important role in the molecular mechanisms of colorectal cancer (CRC) and has been shown to be associated with Blastocystis sp., a common intestinal microorganism. In the present study, we aimed to identify a role for Blastocystis sp. in exacerbating carcinogenesis using in vivo rat model...
2017: PloS One
https://www.readbyqxmd.com/read/28794984/seasonality-richness-and-prevalence-of-intestinal-parasites-of-three-neotropical-primates-alouatta-seniculus-ateles-hybridus-and-cebus-versicolor-in-a-fragmented-forest-in-colombia
#4
Silvia Rondón, Mario Ortiz, Cielo León, Nelson Galvis, Andrés Link, Camila González
Studies on parasites infecting non-human primates are essential to better understand the potential threat to humans of zoonoses transmission, particularly under the current processes of pervasive land use change and biodiversity loss. The natural ecosystems in the Middle Magdalena river basin in Colombia have suffered a dramatic reduction and transformation into pastures and agroindustrial monocultures, threatening their biodiversity, and probably affecting the dynamics between parasites and their hosts, as well as altering the disease transmission cycles between wild populations and humans...
December 2017: International Journal for Parasitology. Parasites and Wildlife
https://www.readbyqxmd.com/read/28761462/subtypes-distribution-and-frequency-of-blastocystis-sp-isolated-from-diarrheic-and-non-diarrheic-patients
#5
Nahid Jalallou, Shahrokh Iravani, Mostafa Rezaeian, Atefe Alinaghizade, Hamed Mirjalali
BACKGROUND: Blastocystis is one of the most common parasites, reported from both human and animals. This parasite is more prevalent in regions with low levels of hygiene, close contact with animal and unsuitable disposal systems. The aim of the study was to subtype Blastocystis sp., isolated from diarrheic and non-diarrheic patients using sequencing of 18S ribosomal DNA. METHODS: Totally, 300 stool samples were collected from diarrheic and nondiarrheic patients referred to Imam Reza Hospital, Tehran from Apr to Aug 2015...
January 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28741097/distribution-and-phylogenetic-analysis-of-blastocystis-sp-subtypes-isolated-from-ibd-patients-and-healthy-individuals-in-iran
#6
H Mirjalali, M R Abbasi, N Naderi, Z Hasani, E S Mirsamadi, C R Stensvold, H Balaii, H Asadzadeh Aghdaei, M R Zali
Blastocystis is a single-celled intestinal parasite commonly found in humans and a broad range of animals all over the world. In humans, its role in health and disease remains unsettled. The aim of our study was to investigate the distribution of Blastocystis and Blastocystis subtypes (ST) in patients with inflammatory bowel disease (IBD) and control subjects. A total of 71 stool samples were collected from IBD patients, 69 and 2 of whom had ulcerative colitis (UC) and Crohn's Disease (CD), respectively. Moreover, 166 stool samples from healthy subjects were included as control samples...
July 25, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28725935/erratum-to-the-role-of-blastocystis-sp-and-dientamoeba-fragilis-in-irritable-bowel-syndrome-a-systematic-review-and-meta-analysis
#7
Ali Rostami, Seyed Mohammad Riahi, Ali Haghighi, Vafa Saber, Bahram Armon, Seyyed Javad Seyyedtabaei
No abstract text is available yet for this article.
September 2017: Parasitology Research
https://www.readbyqxmd.com/read/28668983/the-role-of-blastocystis-sp-and-dientamoeba-fragilis-in-irritable-bowel-syndrome-a-systematic-review-and-meta-analysis
#8
REVIEW
Ali Rostami, Seyed Mohammad Riahi, Ali Haghighi, Vafa Saber, Bahram Armon, Seyyed Javad Seyyedtabaei
Irritable bowel syndrome (IBS) is globally one of the most prevalent gastrointestinal disorders with a negative impact on quality of life and socio-economic status of patients. Recently, controversial evidences suggest that Blastocystis sp. and Dientamoeba fragilis infections may be implicated in the development of IBS. We performed a systematic review and meta-analysis to examine the possible association regarding this issue. PubMed, ScienceDirect, Scopus, Web of Science, and Cochrane electronic databases were searched (up to February 2017) to identify the relevant studies...
July 1, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28614462/-cross-sectional-study-of-intestinal-parasitosis-in-child-populations-in-argentina
#9
Graciela Teresa Navone, María Lorena Zonta, Paola Cociancic, Mariela Garraza, María Inés Gamboa, Luis Alberto Giambelluca, Silvia Dahinten, Evelia Edith Oyhenart
Objective: Determine the distribution of intestinal parasitosis in children in nine provinces representative of Argentina's mosaic of contrasting environments. Methods: Descriptive, observational, cross-sectional study of preschool children (5 years old or under) and school-age children (6-14 years) in the provinces of Buenos Aires (sample taken between 2005 and 2013), Chubut (2010-2013), Corrientes (2012), Entre Ríos (2010-2012), Formosa (2014), La Pampa (2006), Mendoza (2008-2011), Misiones (2005-2008 and 2013), and Salta (2012-2013)...
June 8, 2017: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
https://www.readbyqxmd.com/read/28540508/molecular-characterization-of-blastocystis-sp-in-captive-wild-animals-in-qinling-mountains
#10
G H Zhao, X F Hu, T L Liu, R S Hu, Z Q Yu, W B Yang, Y L Wu, S K Yu, J K Song
Blastocystis is one common protist inhabiting in gastrointestinal tracts of animals and humans. Examining the subtypes has important implications for assessing the zoonotic potential of Blastocystis and intestinal health of hosts. In the present study, a total of 497 fecal samples collected from 37 wild animal species in Qinling Mountains were investigated for the presence and subtypes of Blastocystis. Of them, 200 (40.2%) were positive for Blastocystis and 13 subtypes were found, including eight known subtypes (STs1-3, 5, 10, 12-14) and five possible novel subtypes (temporarily named as STs18-22), with ST10 as the predominate subtype and the subtype ST5 was detected in an ostrich for the first time...
August 2017: Parasitology Research
https://www.readbyqxmd.com/read/28404232/pcr-based-molecular-characterization-of-blastocystis-hominis-subtypes-in-southwest-of-iran
#11
Shahram Khademvatan, Rahim Masjedizadeh, Ehsan Yousefi-Razin, Hamidreza Mahbodfar, Fakher Rahim, Elham Yousefi, Masoud Foroutan
Blastocystis hominis is the most common intestinal parasite found in humans and many other hosts. Pathogenicity of Blastocystis sp. remains controversial and it has been suggested that it may be associated with certain subtypes of organism. The aim of this study was to evaluate the molecular epidemiology of B. hominis and its subtype distribution in Ahvaz, southwest of Iran. During 2012-2014, a total of 481 samples were collected from patients referred to the medical laboratory centers in Ahvaz for stool examination...
April 9, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28388938/subtyping-of-blastocystis-sp-isolated-from-symptomatic-and-asymptomatic-individuals-in-makkah-saudi-arabia
#12
Raafat T Mohamed, Mohammed A El-Bali, Anhar A Mohamed, Mona A Abdel-Fatah, Mohamed A El-Malky, Nawras M Mowafy, Dina A Zaghlool, Rowaida A Bakri, Saeed A Al-Harthi
BACKGROUND: Blastocystis is a group of cosmopolitan gastrointestinal parasite of humans and a wide variety of animals. These anaerobic protozoans include more than 17 specific small-subunit ribosomal RNA subtypes, of which nine are found in humans with a variable geographical distribution. Until now, no study has described the Blastocystis subtypes present in Saudi Arabia. METHODS: In total, 1,262 faecal samples were collected from patients with gastrointestinal complaints and asymptomatic individuals visiting two major hospitals...
April 7, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28262486/lateral-gene-transfer-in-the-adaptation-of-the-anaerobic-parasite-blastocystis-to-the-gut
#13
Laura Eme, Eleni Gentekaki, Bruce Curtis, John M Archibald, Andrew J Roger
Blastocystis spp. are the most prevalent eukaryotic microbes found in the intestinal tract of humans. Here we present an in-depth investigation of lateral gene transfer (LGT) in the genome of Blastocystis sp. subtype 1. Using rigorous phylogeny-based methods and strict validation criteria, we show that ∼2.5% of the genes of this organism were recently acquired by LGT. We identify LGTs both from prokaryote and eukaryote donors. Several transfers occurred specifically in ancestors of a subset of Blastocystis subtypes, demonstrating that LGT is an ongoing process...
March 20, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28224033/distribution-and-risk-factors-associated-with-intestinal-parasite-infections-among-children-with-gastrointestinal-disorders
#14
Hamed Kiani, Ali Haghighi, Roya Salehi, Eznollah Azargashb
AIM: Prevalence and risk factors associated with intestinal parasites among children ≤ 12 years old in Nahavand county western Iran, was the objective of this search. BACKGROUND: Intestinal parasites (IPs) are important health problems among most societies. METHODS: This cross sectional study was carried out during 6 months from April to September 2014 in Nahavand County western Iran. Fecal samples were collected from 500 children suffering from gastrointestinal disorders (GIDs) and examined by macroscopy and microscopic (using saline and iodine wet mount, formalin-ether sedimentation, Trichrome and modified Ziehl Neelsen staining) methods...
December 2016: Gastroenterology and Hepatology From Bed to Bench
https://www.readbyqxmd.com/read/28088334/subtype-identification-of-human-blastocystis-spp-isolated-from-lao-people-s-democratic-republic
#15
Oranuch Sanpool, Sakhone Laymanivong, Tongjit Thanchomnang, Rutchanee Rodpai, Lakkhana Sadaow, Issarapong Phosuk, Wanchai Maleewong, Pewpan M Intapan
Blastocystis sp. is the most common protist found in the intestinal tract of humans and animals. Blastocystis subtypes (STs) are classified based on the molecular phylogeny of the small subunit rRNA gene (SSU rDNA). At least 17 Blastocystis STs have been reported and, of these, STs 1-9 have been found in humans. This study revealed the presence of human Blastocystis STs in Lao People's Democratic Republic (Lao PDR). Fecal samples were collected from apparently healthy people from the central province of Khammouane and the southern province of Champasak...
April 2017: Acta Tropica
https://www.readbyqxmd.com/read/28060901/molecular-epidemiology-of-blastocystis-sp-in-various-animal-groups-from-two-french-zoos-and-evaluation-of-potential-zoonotic-risk
#16
Amandine Cian, Dima El Safadi, Marwan Osman, Romain Moriniere, Nausicaa Gantois, Sadia Benamrouz-Vanneste, Pilar Delgado-Viscogliosi, Karine Guyot, Luen-Luen Li, Sébastien Monchy, Christophe Noël, Philippe Poirier, Céline Nourrisson, Ivan Wawrzyniak, Frédéric Delbac, Stéphanie Bosc, Magali Chabé, Thierry Petit, Gabriela Certad, Eric Viscogliosi
Blastocystis sp. is a common intestinal parasite infecting humans and a wide range of animals worldwide. It exhibits an extensive genetic diversity and 17 subtypes (STs) have thus far been identified in mammalian and avian hosts. Since several STs are common to humans and animals, it was proposed that a proportion of human infections may result from zoonotic transmission. However, the contribution of each animal source to human infection remains to be clarified. Therefore, the aim of this study was to expand our knowledge of the epidemiology and host specificity of this parasite by performing the largest epidemiological survey ever conducted in animal groups in terms of numbers of species screened...
2017: PloS One
https://www.readbyqxmd.com/read/28007484/diagnosis-of-intestinal-parasites-in-a-rural-community-of-venezuela-advantages-and-disadvantages-of-using-microscopy-or-rt-pcr
#17
COMPARATIVE STUDY
Renzo Nino Incani, Elizabeth Ferrer, Denise Hoek, Robbert Ramak, Jeroen Roelfsema, Lapo Mughini-Gras, Titia Kortbeek, Elena Pinelli
A cross-sectional study was carried out to determine the prevalence and diagnostic performance of microscopy and real time PCR (RT-PCR) for 14 intestinal parasites in a Venezuelan rural community with a long history of persistent intestinal parasitic infections despite the implementation of regular anthelminthic treatments. A total of 228 participants were included in this study. A multiplex RT-PCR was used for the detection of Dientamoeba fragilis, Giardia intestinalis, Cryptosporidium sp. and a monoplex RT-PCR for Entamoeba histolytica...
March 2017: Acta Tropica
https://www.readbyqxmd.com/read/27920396/prevalence-and-subtype-identification-of-blastocystis-sp-in-healthy-individuals-in-the-tunis-area-tunisia
#18
Imène Ben Abda, Nabil Maatoug, Rania Ben Romdhane, Nada Bouhelmi, Najet Zallegua, Karim Aoun, Eric Viscogliosi, Aïda Bouratbine
Blastocystis sp. is currently the most common eukaryotic parasite found in humans. Despite its potential public health impact, epidemiological data regarding its prevalence and molecular subtype (ST) distribution in Maghreb are rarely reported. Therefore, the aim of this study was to determine the prevalence of the parasite in a cohort of healthy food handler Tunisian individuals and to acquire the first molecular data regarding the distribution of Blastocystis sp. STs in this country. Therefore, 524 fecal samples were collected, and 68 of them (13%) were identified as positive for the parasite by direct-light microscopy of smears...
January 11, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27905282/distribution-of-parasites-detected-in-stool-samples-of-patients-admitted-to-our-parasitology-laboratory-during-a-three-year-period-between-2012-and-2014
#19
Mehmet Burak Selek, Bayhan Bektöre, Ergenekon Karagöz, Orhan Baylan, Mustafa Özyurt
OBJECTIVE: Parasitic diseases are among the major public health issues worldwide. A number of tests are available for diagnosis, but the sentivity and specifity of these tests are assumed to be insufficient. Nevertheless, the most common diagnostic method is microscopic examination. In this study, we aimed to introduce the distribution of parasites detected in stool samples of patients admitted to our laboratory on the basis of parameters such as, age, and gender during a 3-year period between 2012 and 2014...
September 2016: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/27847411/zoonotic-intestinal-protozoan-of-the-wild-boars-sus-scrofa-in-persian-gulf-s-coastal-area-bushehr-province-southwestern-iran
#20
Kambiz Yaghoobi, Bahador Sarkari, Majid Mansouri, Mohammad Hossein Motazedian
AIM: Wild boars, Sus scrofa, are potential reservoirs of many zoonotic diseases, and there are a possibility of transmission of the zoonotic diseases from these animals to humans and also domestic animals. This study aimed to evaluate the protozoan contamination of wild boars in the Persian Gulf's coastal area (Bushehr Province), southwestern Iran. MATERIALS AND METHODS: A total of 25 crossbred boars were collected during a course of vertebrate pest control in Bushehr province, in 2013...
October 2016: Veterinary World
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