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https://www.readbyqxmd.com/read/28110081/isolation-and-partial-characterization-of-an-immunogenic-antigen-of-giardia-lamblia
#1
Jael Quintero, Alejandra Valdez, Brenda Samaniego, Gloria Lopez-Romero, Humberto Astiazaran-Garcia, Lucila Rascon, Linda Breci, Adriana Garibay-Escobar, Ramón Robles-Zepeda, Carlos Velazquez
Humoral and cellular immune responses play an important role during Giardia lamblia infection. Several Giardia proteins have been identified as immunogenic antigens based on their elicited humoral immune response. Poorly is known about Giardia antigens that stimulate a cellular immune response. The main purpose of this study was to isolate and partial characterize an immunogenic antigen (5G8) of G. lamblia. The 5G8 protein was isolated from G. lamblia trophozoite lysates by affinity chromatography using moAb 5G8-coupled CNBr-Sepharose...
January 18, 2017: Parasitology International
https://www.readbyqxmd.com/read/28096858/prevalence-of-intestinal-parasitic-infections-in-jiroft-kerman-province-iran
#2
Maryam Barkhori Mahni, Mostafa Rezaeian, Eshrat Beigom Kia, Ahmad Raeisi, Khadijeh Khanaliha, Fatemeh Tarighi, Bahare Kamranrashani
BACKGROUND: Intestinal parasitic infections have a worldwide distribution. High prevalence of intestinal parasitic infections in individuals with low socioeconomic status and environmental conditions was found. No study has ever been conducted on the prevalence of these infections in Jiroft. Therefore, in this study prevalence of intestinal parasitic infections was evaluated in Jiroft, Kerman Province, Iran. METHODS: A total of 1060 individuals from rural and urban areas of Jiroft were sampled accidentally, during 2013-2014...
April 2016: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28095909/prevalence-and-genetic-characterization-of-cryptosporidium-species-and-giardia-duodenalis-in-lambs-in-oromia-special-zone-central-ethiopia
#3
Teklu Wegayehu, Md Robiul Karim, Junqiang Li, Haileeyesus Adamu, Berhanu Erko, Longxian Zhang, Getachew Tilahun
BACKGROUND: Cryptosporidium and Giardia duodenalis are gastro-intestinal parasites that infect human and animals worldwide. Both parasites share a broad host range and are believed to be zoonosis. The aim of this study was to identify the species of Cryptosporidium and assemblages of G. duodenalis in lambs and to elucidate their role in zoonotic transmission. RESULTS: A total of 389 fecal samples were collected from lambs and screened by microscopy and nested PCR targeting the small-subunit ribosomal RNA for Cryptosporidium; and the small-subunit ribosomal RNA, triose phosphate isomerase, β-giardin, and glutamate dehydrogenase genes for G...
January 17, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28093543/intestinal-parasite-infections-and-accuracy-of-direct-thin-and-thick-smear-formol-ether-sedimentation-centrifugal-flotation-and-mini-flotac-techniques-among-patients-with-gastrointestinal-tract-disorders-from-the-greater-cairo-region-egypt
#4
Atef H Hussein, Samia M Rashed, Ibrahim A El-Hayawan, Nagwa S Ali, Eman A Abou Ouf, Amira T Ali
The aim of the present study was to assess the frequency of intestinal parasitic infection among patients with gastrointestinal tract disorders from the Greater Cairo region, Egypt. In addition, a comparison was made of the accuracy of direct thin and thick smear, formol-ether sedimentation (FEC), centrifugal flotation (CF), and mini-FLOTAC techniques in the diagnosis of infection. Out of 100 patients, the overall prevalence of parasitic infection was 51%. Only 6% had dual infection. Giardia lamblia was the most common parasite (26%), followed by Hymenolepis nana (20%), Entamoeba coli (8%), and Enterobius vermicularis (3%)...
January 16, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28093213/characterization-of-the-efficiency-and-uncertainty-of-skimmed-milk-flocculation-for-the-simultaneous-concentration-and-quantification-of-water-borne-viruses-bacteria-and-protozoa
#5
Eloy Gonzales-Gustavson, Yexenia Cárdenas-Youngs, Miquel Calvo, Marcelle Figueira Marques da Silva, Ayalkibet Hundesa, Inmaculada Amorós, Yolanda Moreno, Laura Moreno-Mesonero, Rosa Rosell, Llilianne Ganges, Rosa Araujo, Rosina Girones
In this study, the use of skimmed milk flocculation (SMF) to simultaneously concentrate viruses, bacteria and protozoa was evaluated. We selected strains of faecal indicator bacteria and pathogens, such as Escherichia coli and Helicobacter pylori. The viruses selected were adenovirus (HAdV 35), rotavirus (RoV SA-11), the bacteriophage MS2 and bovine viral diarrhoea virus (BVDV). The protozoa tested were Acanthamoeba, Giardia and Cryptosporidium. The mean recoveries with q(RT)PCR were 66% (HAdV 35), 24% (MS2), 28% (RoV SA-11), 15% (BVDV), 60% (E...
January 16, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28090405/transcriptomic-analysis-of-diplomonad-parasites-reveals-a-trans-spliced-intron-in-a-helicase-gene-in-giardia
#6
Scott William Roy
BACKGROUND: The mechanisms by which DNA sequences are expressed is the central preoccupation of molecular genetics. Recently, ourselves and others reported that in the diplomonad protist Giardia lamblia, the coding regions of several mRNAs are produced by ligation of independent RNA species expressed from distinct genomic loci. Such trans-splicing of introns was found to affect nearly as many genes in this organism as does classical cis-splicing of introns. These findings raised questions about the incidence of intron trans-splicing both across the G...
2017: PeerJ
https://www.readbyqxmd.com/read/28087921/pathogen-characterization-of-fresh-and-stored-mesophilic-anaerobically-digested-biosolids
#7
Cecily A
Culturable bacterial pathogens (Campylobacter, Salmonella, Listeria, Yersinia) and indicators (E. coli, enterococci, Clostridium perfringens) were quantified at six wastewater treatment plants that land apply anaerobically digested biosolids in Ontario, Canada. Cryptosporidium parvum and Giardia lamblia were also quantified by PCR. Salmonella and Listeria were frequently detected in sludge and liquid biosolids (70-100% of samples) but less often in fresh dewatered cake biosolids (50-60%); with low levels in fresh cake (<100 cells/g dw)...
January 13, 2017: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/28079004/foodborne-giardiasis-is-there-any-relationship-between-food-handlers-and-transmission-of-giardia-duodenalis
#8
Molouk Beiromvand, Ehsanallah Mirrezaie, Somayeh Mirzavand
BACKGROUND: The foodborne diseases are the main causes of morbidity and mortality in the human communities. Giardia duodenalis, the causative agent of giardiasis, is one of the foodborne parasites, which has public health importance. The aim of the current study was to assess the prevalence of G. duodenalis among food handlers in Andimeshk County, southwest of Iran. MATERIALS AND METHODS: This cross-sectional study was undertaken among 480 food handlers in 2015...
January 10, 2017: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/28074554/population-genetic-analysis-of-giardia-duodenalis-genetic-diversity-and-haplotype-sharing-between-clinical-and-environmental-sources
#9
Mauricio Durigan, Maisa Ciampi-Guillardi, Ricardo C A Rodrigues, Juliane A Greinert-Goulart, Isabel C V Siqueira-Castro, Diego A G Leal, Sandra Yamashiro, Taís R Bonatti, Maria I Zucchi, Regina M B Franco, Anete P de Souza
Giardia duodenalis is a flagellated intestinal protozoan responsible for infections in various hosts including humans and several wild and domestic animals. Few studies have correlated environmental contamination and clinical infections in the same region. The aim of this study was to compare groups of Giardia duodenalis from clinical and environmental sources through population genetic analyses to verify haplotype sharing and the degree of genetic similarity among populations from clinical and environmental sources in the metropolitan region of Campinas...
January 11, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28074315/the-roundworm-strongyloides-stercoralis-in-children-dogs-and-soil-inside-and-outside-a-segregated-settlement-in-eastern-slovakia-frequent-but-hardly-detectable-parasite
#10
G Štrkolcová, M Goldová, E Bocková, J Mojžišová
A comparative study was carried out to evaluate the Strongyloides stercoralis infections in children and dogs inside and outside the segregated settlement in Medzev, Eastern Slovakia, and a survey of the soil within the settlement was included. Applying the Koga agar plate (KAP) culture method and microscopy examination of stool samples collected from 60 Roma and 21 nonRoma children, no larvae of S. stercoralis were detected but eggs of three nematodes (Ascaris lumbricoides, Trichuris trichiura, and Enterobius vermicularis) and cysts of two protozoan endoparasites (Giardia duodenalis and Cryptosporidium spp...
January 10, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28070825/prevalence-and-predictors-of-giardia-in-the-united-states
#11
Haley M Zylberberg, Peter H R Green, Kevin O Turner, Robert M Genta, Benjamin Lebwohl
BACKGROUND: Infection with Giardia lamblia is a common cause of diarrheal disease in the developing and industrialized world. AIMS: We aimed to assess the prevalence of giardiasis in the United States (US) among patients with duodenal biopsies, investigating demographic and clinical factors associated with this condition. METHODS: We conducted a cross-sectional study of patients with duodenal biopsies submitted to a national pathology laboratory between January 2, 2008, and December 31, 2015...
January 9, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28070012/prevalence-and-risk-factors-for-intestinal-parasitic-infection-in-schoolchildren-in-battambang-cambodia
#12
Chien-Wei Liao, Kuan-Chih Chiu, I-Chen Chiang, Po-Ching Cheng, Ting-Wu Chuang, Juo-Han Kuo, Yun-Hung Tu, Chia-Kwung Fan
Most intestinal parasitic infections (IPIs), commonly endemic in tropical resource-poor developing countries, are neglected tropical diseases. Parasitic infections and malnutrition are most commonly found in children. We determined the prevalence of IPIs and the risk factors in Battambang Province, northwestern Cambodia, from August to September 2015. This study collected 308 valid questionnaires and specimens from Dontri (173, 56.2%) and Kon Kaêk (135, 43.8%) primary schools. All stool samples were examined using Chang's Feces Examination Apparatus through the merthiolate-iodine-formaldehyde technique...
January 9, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28061911/presence-of-zoonotic-cryptosporidium-scrofarum-giardia-duodenalis-assemblage-a-and-enterocytozoon-bieneusi-genotypes-in-captive-eurasian-wild-boars-sus-scrofa-in-china-potential-for-zoonotic-transmission
#13
Wei Li, Lei Deng, Kongju Wu, Xiangming Huang, Yuan Song, Huaiyi Su, Yanchun Hu, Hualin Fu, Zhijun Zhong, Guangneng Peng
BACKGROUND: Cryptosporidium spp., Giardia duodenalis and Enterocytozoon bieneusi are the main causal pathogens of gastrointestinal disease. However, there are limited reports about the prevalence of these organisms in captive Eurasian wild boars worldwide. Therefore, we examined the occurrence and identified the species/assemblages/genotypes of these pathogens in captive Eurasian wild boars, and estimated the zoonotic potential. FINDINGS: Of 357 fecal samples collected from captive Eurasian wild boars in China, 155 (43...
January 6, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28049541/the-presence-of-giardia-intestinalis-in-donkeys-equus-asinus-in-china
#14
Xiao-Xuan Zhang, Fu-Kai Zhang, Fa-Cai Li, Jun-Ling Hou, Wen-Bin Zheng, Shuai-Zhi Du, Quan Zhao, Xing-Quan Zhu
BACKGROUND: Giardia intestinalis is one of the most important zoonotic enteric parasites. As no information regarding prevalence and genotype of G. intestinalis in donkeys (Equus asinus) in China is available, 181 faecal samples from 48 donkeys from Jilin Province, from 104 from Shandong Province and from 29 from Liaoning Province were examined between May and December 2015. FINDINGS: Twenty-eight (15.47%) out of 181 donkey samples were tested G. intestinalis-positive by nested amplification of the triosephosphate isomerase (tpi) gene...
January 3, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28043382/protozoan-and-helminth-parasite-fauna-of-free-living-croatian-wild-wolves-canis-lupus-analyzed-by-scat-collection
#15
Carlos Hermosilla, Sonja Kleinertz, Liliana M R Silva, Jörg Hirzmann, Djuro Huber, Josip Kusak, Anja Taubert
The European wolf (Canis lupus) is a large carnivore species present in limited areas of Europe with several small populations still being considered as endangered. Wolves can be infected by a wide range of protozoan and metazoan parasites with some of them affecting free-living wolf health condition. On this account, an epidemiological survey was conducted to analyze the actual parasite fauna in Croatian wild wolves. In total, 400 individual faecal samples were collected during field studies on wolf ecology in the years 2002-2011...
January 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28039497/synergistic-effects-of-fenbendazole-and-metronidazole-against-giardia-muris-in-swiss-mice-naturally-infected
#16
Renata Coltro Bezagio, Cristiane Maria Colli, Liara Izabela Lopes Romera, Érika Cristina Ferreira, Ana Lúcia Falavigna-Guilherme, Mônica Lúcia Gomes
In this study were proposed different protocols for the treatment of mice naturally infected with Giardia muris. Male Swiss mice were divided into seven groups, with five animals each, in a blind, controlled, randomized by drawing lots and once-repeated experiment. Parasite detection and cure control were performed using the Faust method and search by trophozoites in the intestinal mucosa. Clinical parameters (weight, water and feed consumption, elimination of excreta, aspect of the fur and feces) were also evaluated...
December 30, 2016: Parasitology Research
https://www.readbyqxmd.com/read/28033730/the-proteasome-of-the-differently-diverged-eukaryote-giardia-lamblia-and-its-role-in-remodeling-of-the-microtubule-based-cytoskeleton
#17
Atrayee Ray, Srimonti Sarkar
Giardia lamblia is the causative agent of the diarrheal disease giardiasis, against which only a limited number of drugs are currently available. Increasing reports of resistance to these drugs makes it necessary to identify new cellular targets for designing the next generation of anti-giardial drugs. Towards this goal, therapeutic agents that target the parasitic cellular machinery involved in the functioning of the unique microtubule-based cytoskeleton of the Giardia trophozoites are likely to be effective as microtubule function is not only important for the survival of trophozoites within the host, but also their extensive remodeling is necessary during the transition from trophozoites to cysts...
December 30, 2016: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28030946/first-record-of-giardia-assemblage-d-infection-in-farmed-raccoon-dogs-nyctereutes-procyonoides
#18
Piotr Solarczyk, Anna C Majewska, Szymon Jędrzejewski, Marcin T Górecki, Sławomir Nowicki, Piotr Przysiecki
The presence of Giardia genotypes was investigated in 18 raccoon dogs (Nyctereutes procyonoides) and 80 red foxes (Vulpes vulpes) on one farm. To demonstrate Giardia cysts, fresh and trichrome stained smears were microscopically screened. Two molecular markers were used for Giardia genotyping: a fragment of the beta-giardin gene and a fragment of the glutamate dehydrogenase gene. All faecal samples obtained from red foxes were negative. Giardia cysts were identified only in 2 of the 18 raccoon dogs. The result of genotyping and phylogenetic analysis showed that the G...
23, 2016: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28030941/diagnostics-of-intestinal-parasites-in-light-microscopy-among-the-population-of-children-in-eastern-afghanistan
#19
Krzysztof Korzeniewski, Agata Smoleń, Alina Augustynowicz, Anna Lass
OBJECTIVES: The Afghans, living in poor socioeconomic conditions, are estimated to be a community with a high rate of intestinal parasitic infections. The aim of the study was to estimate the prevalence and species of intestinal parasites among children's population in eastern Afghanistan and to present the methods of optimizing the techniques for identification of pathogens in light microscopy. The research was carried out as a part of humanitarian project Capacity building of health care system in Ghazni Province...
23, 2016: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28030344/report-of-fatal-mixed-infection-with-cryptosporidium-parvum-and-giardia-intestinalis-in-neonatal-calves
#20
Yuu Matsuura, Makoto Matsubayashi, Satoko Nukata, Tomoyuki Shibahara, Osamu Ayukawa, Yasuko Kondo, Tomohide Matsuo, Shigehiko Uni, Masaru Furuya, Hiroyuki Tani, Naotoshi Tsuji, Kazumi Sasai
In the production and management of beef and dairy cattle, controlling diarrhea is one of the important concerns. Pathogenic agents of the disease, protozoan parasites including Cryptosporidium spp., are difficult to control, making prevention, diagnoses, and treatment of diarrhea. In the present study, we investigated a farm with a history of calf deaths over a period of 10 years in order to determine the cause of disease and to clarify the detailed distribution of the pathogens. In four examined calves that were reared in calf pens, all were positive with Cryptosporidium and/or Giardia, while the other breeding stock and adult cattle were negative...
March 1, 2017: Acta Parasitologica
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