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Blastocystis sp

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https://www.readbyqxmd.com/read/29138961/blastocystis-subtypes-isolated-from-irritable-bowel-syndrome-patients-and-co-infection-with-helicobacter-pylori
#1
Ayman A El-Badry, Wegdan M Abd El Wahab, Doaa A Hamdy, Alaa Aboud
Irritable bowel syndrome (IBS) is a chronic functional gastrointestinal disease presenting clinically by abdominal pain with alteration of bowel habits. Although IBS has uncertain etiology, chronic gut inflammation due to persistent exposure to an infectious agent including Blastocystis sp. was proposed. The aim of this study was to detect the prevalence of Blastocystis sp. subtype (ST) isolated from stool of IBS patients and to assess Blastocystis sp. and H. pylori co-infection in IBS patients from Beni-Suef Governorate, Egypt...
November 14, 2017: Parasitology Research
https://www.readbyqxmd.com/read/29118941/prevalence-and-subtype-identification-of-blastocystis-isolated-from-humans-in-ahvaz-southwestern-iran
#2
Roya Salehi, Ali Haghighi, C Rune Stensvold, Farnaz Kheirandish, Eznelloah Azargashb, Saber Raeghi, Cobra Kohansal, Fares Bahrami
Aim: The aim of the present study was to determine the prevalence and subtype distribution of Blastocystis and its relation with demographic data and symptoms in humans referred to medical centers in Ahvaz 2014-2015. Background: Infections with intestinal parasites are one of the most important threats to human health worldwide, especially in tropical and subtropical areas. Blastocystis sp. is a common parasite of humans with a vast variety of non-human hosts. We aimed to study the prevalence and subtypes of Blastocystis sp...
2017: Gastroenterology and Hepatology From Bed to Bench
https://www.readbyqxmd.com/read/29103267/intestinal-parasitic-infections-and-environmental-water-contamination-in-a-rural-village-of-northern-lao-pdr
#3
Alexis Ribas, Chloé Jollivet, Serge Morand, Boupha Thongmalayvong, Silaphet Somphavong, Chern-Chiang Siew, Pei-Jun Ting, Saipin Suputtamongkol, Viengsaene Saensombath, Surapol Sanguankiat, Boon-Huan Tan, Phimpha Paboriboune, Kongsap Akkhavong, Kittipong Chaisiri
A field survey studying intestinal parasites in humans and microbial pathogen contamination at environment was performed in a Laotian rural village to identify potential risks for disease outbreaks. A parasitological investigation was conducted in Ban Lak Sip village, Luang Prabang, Lao PDR involving fecal samples from 305 inhabitants as well as water samples taken from 3 sites of the local stream. Water analysis indicated the presence of several enteric pathogens, i.e., Aeromonas spp., Vibrio spp., E. coli H7, E...
October 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29070053/distribution-of-blastocystis-subtypes-isolated-from-humans-from-an-urban-community-in-rio-de-janeiro-brazil
#4
Carolina Valença Barbosa, Rosemary de Jesus Batista, Ricardo Pereira Igreja, Claudia Masini d'Avila Levy, Heloisa Werneck de Macedo, Helena Lúcia Carneiro Santos
BACKGROUND: Blastocystis is a cosmopolitan protist parasite found in the human gastrointestinal tract and is highly prevalent in developing countries. Recent molecular studies have revealed extensive genetic diversity, which has been classified into different subtypes (STs) based on sequence analysis of small subunit ribosomal RNA gene. Blastocystis is one of the most common fecal parasites in Brazil, but the diversity of subtypes remains unknown in the country. This study aimed to determine the distribution of Blastocystis STs in an urban community in Duque de Caxias, Rio de Janeiro, Brazil...
October 25, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29066287/multiple-identification-of-most-important-waterborne-protozoa-in-surface-water-used-for-irrigation-purposes-by-18s-rrna-amplicon-based-metagenomics
#5
Y Moreno, L Moreno-Mesonero, I Amorós, R Pérez, A J Morillo, J L Alonso
Understanding waterborne protozoan parasites (WPPs) diversity has important implications in public health. In this study, we evaluated a NGS-based method as a detection approach to identify simultaneously most important WPPs using 18S rRNA high-throughput sequencing. A set of primers to target the V4 18S rRNA region of WPPs such as Cryptosporidium spp., Giardia sp., Blastocystis sp., Entamoeba spp, Toxoplasma sp. and free-living amoebae (FLA) was designed. In order to optimize PCR conditions before sequencing, both a mock community with a defined composition of representative WPPs and a real water sample inoculated with specific WPPs DNA were prepared...
October 19, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/29063894/multiple-parasitic-and-viral-infections-in-a-patient-living-with-hiv-aids-on-antiretroviral-therapy
#6
K Deepika, Nonika Rajkumari, A S Liji, Subhash Chandra Parija, Abdoul Hamide
Patients with human immunodeficiency virus (HIV) infection are more prone for gastrointestinal infections causing diarrhoea, particularly with parasites. Parasitic infections have been regularly reported in such patients. A female patient confirmed positive for HIV 1 on antiretroviral therapy came with complaints of chronic diarrhoea for the past 7 months. Her initial CD4 count was 89 cells/μl of blood, and antibodies to cytomegalovirus and herpes simplex virus 1 and 2 virus were found to be positive in the patient's serum, but there was no HIV-associated retinopathy...
July 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28990322/proteogenomics-gets-onto-the-regulation-of-mrna-decoding-and-translation-into-protein
#7
Hubert Hondermarck
Proteogenomics, the integrative analysis of the proteome and the genome, increasingly provides protein-level insights about the regulation of gene expression and protein translation. Armengaud et al. (Proteomics 2017. volume, pages) nicely illustrate this trend with the first in depth proteomic analysis of the eukaryotic and unicellular intestinal parasite Blastocystis sp. Not only this work constitutes an important milestone towards the proteogenomics profile of this human pathogen, but also it demonstrates at the protein level the occurrence of a specific mechanism of mRNA decoding...
October 9, 2017: Proteomics
https://www.readbyqxmd.com/read/28984036/a-cross-sectional-study-of-intestinal-parasitoses-in-dogs-and-children-of-the-periurban-area-of-la-plata-buenos-aires-argentina-zoonotic-importance-and-implications-in-public-health
#8
P Cociancic, M L Zonta, G T Navone
A cross-sectional study was performed between school term dates 2014 and 2015 to diagnose intestinal parasites in dogs and children living with them. The socio-environmental characteristics and hygiene practices of the children were also evaluated in terms of risk factors for parasitic infection of periurban neighbourhoods of La Plata (Buenos Aires, Argentina). Serial coproparasitological samples of 78 dogs and 211 children were analysed by means of concentration and flotation techniques. Socio-environmental variables and hygiene practices of children were evaluated through semi-structured questionnaires which were answered by every family...
October 5, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28979346/prevalence-and-risk-factors-of-human-intestinal-parasites-in-roudehen-tehran-province-iran
#9
Nasrin Hemmati, Elham Razmjou, Saeideh Hashemi-Hafshejani, Abbas Motevalian, Lameh Akhlaghi, Ahmad Reza Meamar
BACKGROUND: Intestinal parasitic infections are among the most common infections and health problems worldwide. Due to the lack of epidemiologic information of such infections, the prevalence of, and the risk factors for, enteric parasites were investigated in residents of Roudehen, Tehran Province, Iran. METHODS: In this cross-sectional study, 561 triple fecal samples were collected through a two-stage cluster-sampling protocol from Jun to Dec 2014. The samples were examined by formalin-ether concentration, culture, and with molecular methods...
July 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28968014/-profiles-of-intestinal-polyparasitism-in-a-community-of-the-colombian-amazon-region
#10
Julián A Fernández-Niño, Claudia I Astudillo-García, Laura María Segura, Natalia Gómez, Ángela Skantria Salazar, Juan Hember Tabares, Cristian Andrés Restrepo, Miguel Ángel Ruiz, Myriam Consuelo López, Patricia Reyes
INTRODUCTION: Intestinal parasite infections and polyparasitism are highly prevalent in the most vulnerable populations of developing countries due to environmental, biological and social determinants common in the transmission of parasites. Children between 1 and 15 years of age are the most affected population. OBJECTIVE: To describe the prevalence and profiles of intestinal polyparasitism in 1 to 15 year-old children from native communities in the Colombian Amazon region...
September 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28869791/proteogenomic-insights-into-the-intestinal-parasite-blastocystis-sp-subtype-4-isolate-wr1
#11
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 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 subtype T4 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
#12
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...
December 2017: Acta Tropica
https://www.readbyqxmd.com/read/28859095/exacerbation-of-colon-carcinogenesis-by-blastocystis-sp
#13
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
#14
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
#15
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
#16
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...
December 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
#17
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
#18
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
#19
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
#20
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
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