keyword
MENU ▼
Read by QxMD icon Read
search

Giardia

keyword
https://www.readbyqxmd.com/read/29775772/occurrence-genotyping-and-health-risk-of-cryptosporidium-and-giardia-in-recreational-lakes-in-tianjin-china
#1
Shumin Xiao, Pengna Yin, Yan Zhang, Xiaoyun Zhao, Liping Sun, Hongying Yuan, Jingfang Lu, Sike Hu
Cryptosporidium and Giardia are critical parasites in the etiology of diarrhea worldwide, and often cause waterborne outbreaks. The presence of Cryptosporidium and Giardia in recreational lakes was investigated with molecular characterization, and a comprehensive quantitative microbial risk assessment (QMRA) of protozoan infections was performed, considering multiple exposure pathways, differences in age, sex, and disease severity, and the genotypes of the protozoa. Forty-three (82.7%) and 51 (98.1%) water samples were positive for Cryptosporidium oocysts and Giardia cysts, respectively, with average counts of 3...
May 10, 2018: Water Research
https://www.readbyqxmd.com/read/29774300/epidemiology-of-intestinal-parasite-infections-in-three-departments-of-south-central-c%C3%A3-te-d-ivoire-before-the-implementation-of-a-cluster-randomised-trial
#2
Gaoussou Coulibaly, Mamadou Ouattara, Kouassi Dongo, Eveline Hürlimann, Fidèle K Bassa, Naférima Koné, Clémence Essé, Richard B Yapi, Bassirou Bonfoh, Jürg Utzinger, Giovanna Raso, Eliézer K N'Goran
Hundreds of millions of people are infected with helminths and intestinal protozoa, particularly children in low- and middle-income countries. Preventive chemotherapy is the main strategy to control helminthiases. However, rapid re-infection occurs in settings where there is a lack of clean water, sanitation and hygiene. In August and September 2014, we conducted a cross-sectional epidemiological survey in 56 communities of three departments of south-central Côte d'Ivoire. Study participants were invited to provide stool and urine samples...
May 2018: Parasite Epidemiology and Control
https://www.readbyqxmd.com/read/29774288/molecular-analysis-of-giardia-duodenalis-isolates-from-symptomatic-and-asymptomatic-children-from-la-habana-cuba
#3
Luis Enrique Jerez Puebla, Fidel A Núñez, Lissette Pérez Santos, Lázara Rojas Rivero, Isabel Martínez Silva, Lucía Ayllón Valdés, Iraís Atencio Millán, Norbert Müller
Giardiasis is considered the most common intestinal parasitic disease in humans worldwide. In Cuba, this infection has particularly a strong clinical impact on the child population. Giardia duodenalis is a highly diverse protozoan, which comprises a complex of eight morphologically identical genetic assemblages, further divided into sub-assemblages. The present study used triose phosphate isomerase ( tpi ) and small-subunit ribosomal RNA (SSU rRNA) genes as genetic markers for the identification of G. duodenalis assemblages and sub-assemblages in correlation with clinical and epidemiological data in children attended at the Paediatric Hospital "William Soler" and at Pedro Kouri Institute, between 2015 and 2016...
August 2017: Parasite Epidemiology and Control
https://www.readbyqxmd.com/read/29762365/multiplex-real-time-pcr-detection-of-intestinal-protozoa-in-hiv-infected-children-in-malawi-enterocytozoon-bieneusi-is-common-and-associated-with-gastrointestinal-complaints-and-may-delay-bmi-nutritional-status-recovery
#4
Minke H W Huibers, Peter Moons, Nelson Maseko, Monfort B Gushu, Oluwadamilola H Iwajomo, Robert S Heyderman, Michael Boele van Hensbroek, Eric A Brienen, Lisette van Lieshout, Job C J Calis
BACKGROUND: Intestinal protozoa are common opportunistic infections in HIV patients. Longitudinal studies on either the clinical relevance, or the effect of immune reconstitution by anti-retroviral therapy on intestinal protozoan infections are children is lacking however. This study investigates prevalence and clinical relevance of intestinal protozoa in HIV-infected Malawian children prior to and during their first year of ART. METHODS: Stool samples collected at enrolment and during follow-up were tested for non-opportunistic (Giardia lamblia, Dientamoeba fragilis, Entamoeba histolytica) and opportunistic protozoa (Entroctytoon bieneusi, Encephalitozoon spp...
May 14, 2018: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29762142/cytology-preparations-of-formalin-fixative-aid-detection-of-giardia-in-duodenal-biopsy-samples-a-helpful-tool-for-diagnosing-esophageal-candidiasis-as-well
#5
Sören Schröder, Thomas Günther
No abstract text is available yet for this article.
May 14, 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29752883/occurrence-molecular-characterization-and-assessment-of-zoonotic-risk-of-cryptosporidium-spp-giardia-duodenalis-and-enterocytozoon-bieneusi-in-pigs-in-henan-central-china
#6
Haiyan Wang, Yiqi Zhang, Yayun Wu, Junqiang Li, Meng Qi, Tingwen Li, Jianling Wang, Rongjun Wang, Sumei Zhang, Fuchun Jian, Changshen Ning, Longxian Zhang
Cryptosporidium spp., Giardia duodenalis, and Enterocytozoon bieneusi are common gastrointestinal pathogens in humans and animals. Little is known about them and the range of species/assemblages/genotypes occurring in domestic pigs in China. Here, we present data on the occurrence and molecular diversity of these pathogens detected in the faeces from farms in Henan, central China. Of 897 fecal samples tested, 28 (3.1%), 15 (1.7%) and 408 (45.5%) samples were positive for Cryptosporidium, G. duodenalis and E...
May 12, 2018: Journal of Eukaryotic Microbiology
https://www.readbyqxmd.com/read/29748124/contribution-of-the-filmarray-%C3%A2-gastrointestinal-panel-in-the-laboratory-diagnosis-of-gastroenteritis-in-a-cohort-of-children-a-two-year-prospective-study
#7
Adriana Calderaro, Monica Martinelli, Mirko Buttrini, Sara Montecchini, Silvia Covan, Sabina Rossi, Francesca Ferraglia, Paolo Montagna, Federica Pinardi, Sandra Larini, Maria Cristina Arcangeletti, Maria Cristina Medici, Carlo Chezzi, Flora De Conto
This study represents a 2-year picture of the epidemiology of enteric pathogens in children suffering from gastroenteritis using the FilmArray® Gastrointestinal Panel (FA-GP), a multiplex molecular assay that allows to simultaneously detect a large panel of pathogens independently of the etiological suspicion and to evaluate its potential contribution to the diagnosis compared to the conventional methods. A total of 1716 stool samples, collected from children with clinical suspicion of bacterial and/or viral gastroenteritis attending the University Hospital of Parma, was submitted to the FA-GP and, when an adequate aliquot was available, to electron microscopy (n = 1163) for virus detection and to an enterovirus-targeting real-time PCR (n = 1703)...
May 2, 2018: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/29742877/monitoring-of-noxious-protozoa-for-management-of-natural-water-resources
#8
Young Yil Bahk, Pyo Yun Cho, Sung Kyu Ahn, Sangjung Park, Won Hwa Jheong, Yun-Kyu Park, Ho-Joon Shin, Sang-Seob Lee, Okjae Rhee, Tong-Soo Kim
Waterborne parasitic protozoa, particularly Giardia lamblia and Cryptosporidium spp., are common causes of diarrhea and gastroenteritis worldwide. The most frequently identified source of infestation is water, and exposure involves either drinking water or recreation in swimming pools or natural bodies of water. In practice, studies on Cryptosporidium oocysts and Giardia cysts in surface water are challenging owing to the low concentrations of these microorganisms because of dilution. In this study, a 3-year monitoring of Cryptosporidium parvum, Giardia lamblia , and Naegleria fowleri was conducted from August 2014 to June 2016 at 5 surface water sites including 2 lakes, 1 river, and 2 water intake plants...
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29739483/risk-factors-for-sporadic-giardia-infection-in-the-usa-a-case-control-study-in-colorado-and-minnesota
#9
H E Reses, J W Gargano, J L Liang, A Cronquist, K Smith, S A Collier, S L Roy, J Vanden Eng, A Bogard, B Lee, M C Hlavsa, E S Rosenberg, K E Fullerton, M J Beach, J S Yoder
Giardia duodenalis is the most common intestinal parasite of humans in the USA, but the risk factors for sporadic (non-outbreak) giardiasis are not well described. The Centers for Disease Control and Prevention and the Colorado and Minnesota public health departments conducted a case-control study to assess risk factors for sporadic giardiasis in the USA. Cases (N = 199) were patients with non-outbreak-associated laboratory-confirmed Giardia infection in Colorado and Minnesota, and controls (N = 381) were matched by age and site...
May 9, 2018: Epidemiology and Infection
https://www.readbyqxmd.com/read/29738984/physiological-aspects-of-nitro-drug-resistance-in-giardia-lamblia
#10
Joachim Müller, Andrew Hemphill, Norbert Müller
For over 50 years, metronidazole and other nitro compounds such as nitazoxanide have been used as a therapy of choice against giardiasis and more and more frequently, resistance formation has been observed. Model systems allowing studies on biochemical aspects of resistance formation to nitro drugs are, however, scarce since resistant strains are often unstable in culture. In order to fill this gap, we have generated a stable metronidazole- and nitazoxanide-resistant Giardia lamblia WBC6 clone, the strain C4...
April 28, 2018: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/29737264/what-are-hidden-facts-behind-intestinal-parasitic-infections-in-ilam-city
#11
Jahangir Abdi, Soghra Viesy, Zahra Rezaei
Intestinal parasitic infections are the one of the most common health problems in developing countries. A number of patients die annually due to complications caused by these parasites.Therefore, the aim of this study was to investigate the rate and type of parasitic infections, determine the factors affecting them in Ilam city and also provide strategies to prevent them. In this descriptive cross-sectional study conducted in one of the Ilam labs in 2016, 417 stool specimens were randomly collected. All specimens were examined using direct and ethanol formaldehyde...
May 8, 2018: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/29728828/assemblages-a-and-b-of-giardia-duodenalis-reduce-enteric-glial-cells-in-the-small-intestine-in-mice
#12
Mariana Felgueira Pavanelli, Cristiane Maria Colli, Renata Coltro Bezagio, Marcelo Biondaro Góis, Gessilda de Alcântara Nogueira de Melo, Eduardo José de Almeida Araújo, Débora de Mello Gonçales Sant'Ana
Infection of Giardia duodenalis is one of the most common human parasitic disease worldwide. This infection may be related to important changes in the enteric nervous system. The objective of this study was to evaluate the myenteric and submucosal plexuses, the intestinal muscle layer, and gastrointestinal transit in mice infected with assemblages A and B of G. duodenalis. Swiss albino mice (Mus musculus) were infected with assemblages A and B of G. duodenalis for 15 days. Gastrointestinal transit time was evaluated before euthanasia...
May 5, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29726306/secreted-giardia-intestinalis-cysteine-proteases-disrupt-intestinal-epithelial-cell-junctional-complexes-and-degrade-chemokines
#13
Jingyi Liu, Showgy Ma'ayeh, Dimitra Peirasmaki, Britta Lundström-Stadelmann, Lars Hellman, Staffan G Svärd
Giardiasis is a common diarrheal disease caused by the protozoan parasite Giardia intestinalis. Cysteine proteases (CPs) are acknowledged as virulence factors in Giardia but their specific role in the molecular pathogenesis of disease is not known. Herein, we aimed to characterize the three main secreted CPs (CP14019, CP16160 and CP16779), which were identified by mass spectrometry in the medium during interaction with intestinal epithelial cells (IECs) in vitro. First, the CPs were epitope-tagged and localized to the endoplasmic reticulum and cytoplasmic vesicle-like structures...
December 31, 2018: Virulence
https://www.readbyqxmd.com/read/29719668/molecular-detection-and-identification-of-giardia-duodenalis-in-cattle-of-urmia-northwest-of-iran
#14
Farnaz Malekifard, Minoo Ahmadpour
Giardia duodenalis is one of the most prevalent intestinal protozoa infecting humans and domestic animals. The aim of this study was to identify subspecies of G. duodenalis by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) method from fecal samples of naturally infected cattle in the Urmia, West Azerbaijan province, Iran. Overall, 246 fecal specimens were collected from the cattle (diarrheic and healthy) and microscopically examined for G. duodenalis. The PCR-RFLP analysis of glutamate dehydrogenase (gdh) locus was used to identify the genotypes found in cattle...
2018: Veterinary Research Forum
https://www.readbyqxmd.com/read/29718129/giardia-cryptosporidium-quik-chek%C3%A2-assay-is-more-specific-than-qpcr-for-rapid-point-of-care-diagnosis-of-cryptosporidiosis-in-infants-in-bangladesh
#15
Mamun Kabir, Emtiaz Ahmed, Biplob Hossain, Masud Alam, Shahnawaz Ahmed, Mami Taniuchi, Carol A Gilchrist, Eric R Houpt, A S G Faruque, William A Petri, Rashidul Haque
Background: Cryptosporidiumis a major cause of childhood diarrhea. Current modes of cryptosporidiosis diagnosis involve procedures which are costly and require both a well-equipped laboratory and technical expertise. Therefore, a cost effective, user friendly and rapid method for point-of-care detection of Cryptosporidium species in fecal samples is desirable. Methodology: A total of 832 diarrheal stool specimens collected from 200 children aged below two years were tested by Giardia/Cryptosporidium QUIK CHEK®, ELISA and qPCR to compare the performance of the individual techniques...
April 27, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29710421/molecular-characterization-of-cryptosporidium-spp-giardia-duodenalis-and-enterocytozoon-bieneusi-in-rabbits-in-xinjiang-china
#16
Xiangqian Zhang, Meng Qi, Bo Jing, Fuchang Yu, Yayun Wu, Yankai Chang, Aiyun Zhao, Zilin Wei, Haiju Dong, Longxian Zhang
A total of 321 rabbit fecal samples were collected from 10 farms in the Xinjiang Uyghur Autonomous Region, China. The prevalence of Cryptosporidium spp., Giardia duodenalis, and Enterocytozoon bieneusi in the samples was 3.4% (11/321), 1.9% (6/321), and 2.8% (9/321), respectively. Small subunit ribosomal RNA (SSU rRNA) gene sequence analysis identified all 11 Cryptosporidium-positive samples as C. cuniculus. Further subtyping based on the 60-kDaglycoprotein locus (gp60) identified five of the C. cuniculus isolates as subtype VbA24...
April 30, 2018: Journal of Eukaryotic Microbiology
https://www.readbyqxmd.com/read/29702111/new-advances-in-scanning-microscopy-and-its-application-to-study-parasitic-protozoa
#17
REVIEW
Wanderley de Souza, Marcia Attias
Scanning electron microscopy has been used to observe and study parasitic protozoa for at least 40 years. However, field emission electron sources, as well as improvements in lenses and detectors, brought the resolution power of scanning electron microscopes (SEM) to a new level. Parallel to the refinement of instruments, protocols for preservation of the ultrastructure, immunolabeling, exposure of cytoskeleton and inner structures of parasites and host cells were developed. This review is focused on protozoan parasites of medical and veterinary relevance, e...
April 24, 2018: Experimental Parasitology
https://www.readbyqxmd.com/read/29695621/beaver-fever-whole-genome-characterization-of-waterborne-outbreak-and-sporadic-isolates-to-study-the-zoonotic-transmission-of-giardiasis
#18
Clement K-M Tsui, Ruth Miller, Miguel Uyaguari-Diaz, Patrick Tang, Cedric Chauve, William Hsiao, Judith Isaac-Renton, Natalie Prystajecky
Giardia causes the diarrheal disease known as giardiasis; transmission through contaminated surface water is common. The protozoan parasite's genetic diversity has major implications for human health and epidemiology. To determine the extent of transmission from wildlife through surface water, we performed whole-genome sequencing (WGS) to characterize 89 Giardia duodenalis isolates from both outbreak and sporadic infections: 29 isolates from raw surface water, 38 from humans, and 22 from veterinary sources...
April 25, 2018: MSphere
https://www.readbyqxmd.com/read/29692802/hemolytic-anticancer-and-antigiardial-activity-of-palythoa-caribaeorum-venom
#19
Fernando Lazcano-Pérez, Ariana Zavala-Moreno, Yadira Rufino-González, Martha Ponce-Macotela, Alejandro García-Arredondo, Miguel Cuevas-Cruz, Saúl Gómez-Manzo, Jaime Marcial-Quino, Barbarín Arreguín-Lozano, Roberto Arreguín-Espinosa
Background: Cnidarian venoms and extracts have shown a broad variety of biological activities including cytotoxic, antibacterial and antitumoral effects. Most of these studied extracts were obtained from sea anemones or jellyfish. The present study aimed to determine the toxic activity and assess the antitumor and antiparasitic potential of Palythoa caribaeorum venom by evaluating its in vitro toxicity on several models including human tumor cell lines and against the parasite Giardia intestinalis ...
2018: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/29688452/differential-protein-expression-and-post-translational-modifications-in-metronidazole-resistant-giardia-duodenalis
#20
Samantha J Emery, Louise Baker, Brendan R E Ansell, Mehdi Mirzaei, Paul A Haynes, Malcom J McConville, Staffan G Svärd, Aaron R Jex
Background: Metronidazole (Mtz) is the frontline drug treatment for multiple anaerobic pathogens, including the gastrointestinal protist, Giardia duodenalis. However, treatment failure is common and linked to in vivo drug resistance. In Giardia, in vitro drug-resistant lines allow controlled experimental interrogation of resistance mechanisms in isogenic cultures. However, resistance-associated changes are inconsistent between lines, phenotypic data are incomplete, and resistance is rarely genetically fixed, highlighted by reversion to sensitivity after drug selection ceases or via passage through the life cycle...
April 1, 2018: GigaScience
keyword
keyword
20271
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"