keyword
MENU ▼
Read by QxMD icon Read
search

Giardia

keyword
https://www.readbyqxmd.com/read/28734513/cryptosporidium-and-giardia-infections-in-children-a-review
#1
REVIEW
Blandina T Mmbaga, Eric R Houpt
Diarrheal disease remains the second leading cause of mortality in children in developing countries. Cryptosporidium is a leading cause and its importance stands to increase as rotavirus vaccine becomes used around the world. Cryptosporidium is particularly problematic in children younger than 2 years old and in the immunocompromised. Giardia lamblia is a common intestinal protozoan that is associated with diarrhea and, perhaps, growth faltering in impoverished settings. This review establishes the current prevalence of these infections in global settings and reviews current diagnosis and management approaches...
August 2017: Pediatric Clinics of North America
https://www.readbyqxmd.com/read/28731727/incidence-of-gastrointestinal-infections-among-u-s-active-component-service-members-stationed-in-the-u-s-compared-to-u-s-civilians-2012-2014
#2
Sarah E Hill, Daniela E Poss, Stic Harris
Gastrointestinal (GI) infections in the U.S. Armed Forces have consistently been among the most frequent disease and non-battle injury diagnoses. A retrospective analysis of surveillance data categorized as GI infections among active component service members during 2012-2014 was performed. During the study period, 99% of inpatient and outpatient GI encounters were reported as nonspecific GI infection (13,331 cases per 100,000 people), leaving only a small percentage of cases attributed to specific causes. The five most common organisms associated with GI infections were Campylobacter (10...
July 2017: MSMR
https://www.readbyqxmd.com/read/28730516/cryptosporidium-infection-in-children-with-cancer-undergoing-chemotherapy-how-important-is-the-prevention-of-opportunistic-parasitic-infections-in-patients-with-malignancies
#3
Reza Berahmat, Mahmoud Mahami-Oskouei, Azim Rezamand, Adel Spotin, Nayyereh Aminisani, Roghayeh Ghoyounchi, Solmaz Madadi
Cryptosporidiosis is a relatively uncommon disease in healthy individuals but could be potentially worrisome in immunocompromised patients. This study aimed to evaluate Cryptosporidium infection in children with cancer undergoing chemotherapy. A case-control study was conducted in 132 children with cancer undergoing chemotherapy and 132 non-cancer controls. The modified Ziehl-Neelsen (MZN) staining and polymerase chain reaction methods were used for the detection of Cryptosporidium parasite. All positive isolates were sequenced for phylogenetic analysis...
July 20, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28720110/molecular-characterisation-of-protist-parasites-in-human-habituated-mountain-gorillas-gorilla-beringei-beringei-humans-and-livestock-from-bwindi-impenetrable-national-park-uganda
#4
Matthew J Nolan, Melisa Unger, Yuen-Ting Yeap, Emma Rogers, Ilary Millet, Kimberley Harman, Mark Fox, Gladys Kalema-Zikusoka, Damer P Blake
BACKGROUND: Over 60 % of human emerging infectious diseases are zoonotic, and there is growing evidence of the zooanthroponotic transmission of diseases from humans to livestock and wildlife species, with major implications for public health, economics, and conservation. Zooanthroponoses are of relevance to critically endangered species; amongst these is the mountain gorilla (Gorilla beringei beringei) of Uganda. Here, we assess the occurrence of Cryptosporidium, Cyclospora, Giardia, and Entamoeba infecting mountain gorillas in the Bwindi Impenetrable National Park (BINP), Uganda, using molecular methods...
July 18, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28719267/comparison-of-cytokine-responses-in-ecuadorian-children-infected-with-giardia-ascaris-or-both-parasites
#5
Jill Weatherhead, Andrea Arévalo Cortés, Carlos Sandoval, Maritza Vaca, Martha Chico, Sophia Loor, Philip J Cooper, Rojelio Mejia
AbstractMore than 2 billion people are infected with parasites globally, and the majority have coinfections. Intestinal protozoa and helminths induce polarizing CD4(+) T-helper cell 1 (Th1) mediated cytokine responses within the host. Such immune polarization may inhibit the ability of the host to mount an adequate immune response for pathogen clearance to concurrent pathogens. The current study evaluated the plasma cytokine profile in Ascaris and Giardia coinfected children compared with Giardia- and Ascaris-only infected children...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28716658/stool-antigen-immunodetection-for-diagnosis-of-giardia-duodenalis-infection-in-human-subjects-with-hiv-and-cancer
#6
Maryam Nooshadokht, Behjat Kalantari-Khandani, Iraj Sharifi, Hossein Kamyabi, Namal P M Liyanage, Laurel A Lagenaur, Martin F Kagnoff, Steven M Singer, Zahra Babaei, Shahram Solaymani-Mohammadi
Human infection with the protozoan parasite Giardia duodenalis is one the most common parasitic diseases worldwide. Higher incidence rates of giardiasis have been reported from human subjects with multiple debilitating chronic conditions, including hypogammaglobulinemia and common variable immunodeficiency (CVID). In the current study, stool specimens were collected from 199 individuals diagnosed with HIV or cancer and immunocompetent subjects. The sensitivity of microscopy-based detection on fresh stool preparations, trichrome staining and stool antigen immunodetection for the diagnosis of G...
July 14, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28716138/prevalence-of-enteric-infections-among-hospitalized-patients-in-two-referral-hospitals-in-ghana
#7
R Akuffo, G Armah, M Clemens, K C Kronmann, A H Jones, P Agbenohevi, K Sagoe, N Puplampu, N Talla Nzussouo, W Ampofo, K Koram, C Duplessis, E Dueger
BACKGROUND: Diarrhea is an important cause of morbidity and mortality worldwide. In Africa and Ghana in particular, it is estimated to contribute directly to 19 and 25% of pediatric mortality among children under 5 years, respectively. METHODS: Surveillance for hospitalized acute diarrheal illness was initiated in November 2010 through October 2012 in a referral hospital in southern Ghana, and a teaching hospital in northern Ghana. Consenting hospitalized patients who met a standardized case definition for acute diarrheal illness provided demographic and epidemiologic data...
July 17, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28711437/intestinal-parasitic-infections-current-status-and-associated-risk-factors-among-school-aged-children-in-an-archetypal-african-urban-slum-in-nigeria
#8
Vincent P Gyang, Ting-Wu Chuang, Chien-Wei Liao, Yueh-Lun Lee, Olaoluwa P Akinwale, Akwaowo Orok, Olusola Ajibaye, Ajayi J Babasola, Po-Ching Cheng, Chia-Mei Chou, Ying-Chieh Huang, Pasaiko Sonko, Chia-Kwung Fan
BACKGROUND/PURPOSE: Intestinal parasitic infections (IPIs) among school aged children (SAC) in Nigeria remains endemic, hence the need for regular surveillance to attract the attention of policy makers. This cross-sectional study investigated the current prevalence and factors associated with intestinal parasitic infections among school aged children in an urban slum of Lagos City, Nigeria. METHODS: Single stool samples from 384 school aged children (188 boys and 196 girls) were examined by employing Merthiolate-iodine-formaldehyde concentration (MIFC) and Kato-Katz methods...
June 22, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28704362/local-and-global-genetic-diversity-of-protozoan-parasites-spatial-distribution-of-cryptosporidium-and-giardia-genotypes
#9
Juan C Garcia-R, Nigel French, Anthony Pita, Niluka Velathanthiri, Rima Shrestha, David Hayman
Cryptosporidiosis and giardiasis are recognized as significant enteric diseases due to their long-term health effects in humans and their economic impact in agriculture and medical care. Molecular analysis is essential to identify species and genotypes causing these infectious diseases and provides a potential tool for monitoring. This study uses information on species and genetic variants to gain insights into the geographical distribution and spatial patterns of Cryptosporidium and Giardia parasites. Here, we describe the population heterogeneity of genotypic groups within Cryptosporidium and Giardia present in New Zealand using gp60 and gdh markers to compare the observed variation with other countries around the globe...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28699999/detection-of-zoonotic-and-livestock-specific-assemblages-of-giardia-duodenalis-in-free-living-wild-lizards
#10
Aurora Reboredo-Fernández, Elvira Ares-Mazás, Pedro Galán, Simone Mario Cacciò, Hipólito Gómez-Couso
Giardia duodenalis is a zoonotic parasite that infects the gut of a wide range of vertebrates, including numerous wildlife species. However, little is known about this protozoan parasite in reptiles. Fecal samples from 31 wild lizards were collected in Galicia (northwest Spain) and screened for the presence of Giardia by PCR amplification and sequencing of the ITS1-5.8S-ITS2 region in the ribosomal unit. This allowed detection of the parasite in 5 samples (16.1%), and enabled identification of G. duodenalis assemblage A2 in two samples of Iberian rock lizard (Iberolacerta monticola), G...
July 10, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28697451/reduced-efficacy-of-albendazole-against-ascaris-lumbricoides-in-rwandan-schoolchildren
#11
Jürgen Krücken, Kira Fraundorfer, Jean Claude Mugisha, Sabrina Ramünke, Kevin C Sifft, Dominik Geus, Felix Habarugira, Jules Ndoli, Augustin Sendegeya, Caritas Mukampunga, Claude Bayingana, Toni Aebischer, Janina Demeler, Jean Bosco Gahutu, Frank P Mockenhaupt, Georg von Samson-Himmelstjerna
Control of human soil-transmitted helminths (STHs) relies on preventive chemotherapy of schoolchildren applying the benzimidazoles (BZ) albendazole or mebendazole. Anthelmintic resistance (AR) is a common problem in nematodes of veterinary importance but for human STHs, information on drug efficacy is limited and routine monitoring is rarely implemented. Herein, the efficacy of single dose albendazole (400 mg) was evaluated in 12 schools in the Huye district of Rwanda where Ascaris is the predominant STH. Ascaris eggs were detected by wet mount microscopy and the Mini-FLOTAC method to assess cure rate (CR) and faecal egg count reduction (FECR)...
June 23, 2017: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/28696565/the-er-is-the-sorting-core-facility-in-the-golgi-lacking-protozoan-giardia-lamblia
#12
Nahuel Zamponi, Emiliano Zamponi, Gonzalo F Mayol, Adriana Lanfredi-Rangel, Staffan G Svärd, María C Touz
Our understanding of protein and lipid trafficking in eukaryotic cells has been challenged by the finding of different forms of compartmentalization and cargo processing in protozoan parasites. Here, we show that, in the absence of a Golgi compartment in Giardia, proteins destined for secretion are directly sorted and packaged at specialized ER regions enriched in COPII coatomer complexes and ceramide. We also demonstrated that ER-resident proteins are retained at the ER by the action of a KDEL receptor, which, in contrast to other eukaryotic KDEL receptors, showed no interorganellar dynamic but instead acts specifically at the limit of the ER membrane...
July 11, 2017: Traffic
https://www.readbyqxmd.com/read/28696551/sorting-without-a-golgi-complex
#13
REVIEW
Maria C Touz, Nahuel Zamponi
The ER-Golgi-target organelle route is one of the most studied events and has fascinated researchers for years. However, the conservative mechanism of protein sorting and delivery is now being challenged by the finding of unconventional pathways driving protein sorting and transport. Protozoa parasites are being rediscovered as good models for analyzing alternative targeting pathways, associated with their ability to adapt to diverse environments and hosts. Here, we have gathered all the available information about secretory protein trafficking in Giardia lamblia, with a focus on how this protozoan parasite is able to sort and direct proteins to different compartments in the absence of a Golgi complex...
July 11, 2017: Traffic
https://www.readbyqxmd.com/read/28693557/prevalence-of-giardia-infection-in-households-of-giardia-cases-and-risk-factors-for-household-transmission
#14
Alison Waldram, Roberto Vivancos, Catherine Hartley, Kenneth Lamden
BACKGROUND: Giardia is a leading but neglected cause of infectious gastroenteritis worldwide and is treatable. There is a substantial burden of undetected Giardia in the UK and for every one case of Giardia reported to national surveillance there are 14 cases in the community. We aimed to ascertain the prevalence of, and risk factors associated with secondary household Giardia infections to assess the burden of infection and inform control measures. METHODS: We identified all giardiasis cases notified in nine local authorities in Lancashire between June 2014 and June 2015, and invited their household contacts to submit faecal specimens for Giardia testing and complete a risk factor questionnaire...
July 11, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28689000/morphological-and-physiological-characteristics-of-a-virulent-and-zoonotic-assemblage-a-giardia-duodenalis-canine-strain
#15
Camila Henriques Coelho, Ana Carolina Carvalho Silva, Adriana Oliveira Costa, Ana Paula Fernandes
Giardiasis is an intestinal parasitosis that affects millions of people worldwide and is considered a zoonotic disease. Frequently in contact with humans, dogs are the main host involved in this zoonotic transmission. Here, we compared some aspects of Giardia duodenalis biology between two strains: a recently isolated dog strain (BHFC1) and a human reference strain (Portland-1). Growth curve analysis revealed that BHFC1 trophozoites multiply faster than the human isolate Portland-1 in axenic culture, but has a lower rate of cysts formation...
July 5, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28679631/myosin-independent-cytokinesis-in-giardia-utilizes-flagella-to-coordinate-force-generation-and-direct-membrane-trafficking
#16
William R Hardin, Renyu Li, Jason Xu, Andrew M Shelton, Germain C M Alas, Vladimir N Minin, Alexander R Paredez
Devoid of all known canonical actin-binding proteins, the prevalent parasite Giardia lamblia uses an alternative mechanism for cytokinesis. Unique aspects of this mechanism can potentially be leveraged for therapeutic development. Here, live-cell imaging methods were developed for Giardia to establish division kinetics and the core division machinery. Surprisingly, Giardia cytokinesis occurred with a median time that is ∼60 times faster than mammalian cells. In contrast to cells that use a contractile ring, actin was not concentrated in the furrow and was not directly required for furrow progression...
July 5, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28674353/acute-acalculous-cholecystitis-caused-by-giardia-lamblia
#17
Hiromichi Araki, Shuya Shimizu, Katsumi Hayashi, Tomonori Yamada, Atsunori Kusakabe, Hiroshi Kanie, Yusuke Mizuno, Issei Kojima, Akitoshi Saitou, Kazuhiro Nagao, Yuka Suzuki, Tadashi Toyohara, Takanori Suzuki, Erika Uchida, Konomu Uno, Takahiro Nakazawa
We report a case of a 70-year-old man with acute acalculous cholecystitis caused by Giardia lamblia. Contrast-enhanced computed tomography (CT) showed distention of the gallbladder due to a pericholecystic abscess without gallstones. Magnetic resonance cholangiopancreatography and drip infusion cholecystocholangiography-CT demonstrated a stricture of the hilar bile duct and cystic duct obstruction. We conducted transpapillary bile duct brush cytology and a biopsy of the hilar bile duct stricture; numerous active trophozoites of Giardia lamblia were observed without malignant findings...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28671392/recreational-waterborne-illnesses-recognition-treatment-and-prevention
#18
Allen Perkins, Marirose Trimmier
Illness after recreational water activities can be caused by a variety of agents, including bacteria, viruses, parasites, algae, and even chlorine gas. These illnesses are more common in summer. Waterborne illnesses are underreported because most recreational activity occurs in unsupervised venues or on private property, and participants tend to disperse before illness occurs. Symptoms of waterborne illness are primarily gastrointestinal, but upper respiratory and skin manifestations also occur. Gastrointestinal symptoms are usually self-limited, and supportive treatment may be all that is necessary...
May 1, 2017: American Family Physician
https://www.readbyqxmd.com/read/28669825/new-multilocus-genotypes-of-giardia-lamblia-human-isolates
#19
Clarissa Perez Faria, Graziela Maria Zanini, Gisele Silva Dias, Sidnei da Silva, Maria do Céu Sousa
Giardia lamblia is considered a species complex, whose members show little differences in their morphology, but have remarkable genetic variability. The aim of this study was to identify inter- and intra-assemblage genetic variation in G. lamblia among patients in Rio de Janeiro. The parasitological study was performed on faeces, and DNA was extracted from the samples which tested positive for G. lamblia. The genetic assemblages and subtypes were determined via multilocus sequence typing (MLST) using β-giardin, triose phosphate isomerase and glutamate dehydrogenase gene loci...
June 29, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28668253/expression-and-secretion-of-the-giardia-duodenalis-variant-surface-protein-9b10a-by-transfected-trophozoites-causes-damage-to-epithelial-cell-monolayers-mediated-by-protease-activity
#20
Ariana Cabrera-Licona, Eduardo Solano-González, Rocío Fonseca-Liñán, Ma Luisa Bazán-Tejeda, Raúl Argüello-García, Rosa Ma Bermúdez-Cruz, Guadalupe Ortega-Pierres
Giardia duodenalis is the protozoan parasite responsible for most cases of parasitic diarrhea worldwide. The pathogenic mechanisms of giardiasis have not yet been fully characterized. In this context parasite's excretory/secretory products have been related to the damage induced by the parasite on enterocytes. Among these is the Variable Surface Proteins (VSPs) family involved in antigenic variation and in the induction of protective response. In proteomic analyses carried out to identify the proteases with high molecular weight secreted by Giardia trophozoites during the initial phase of interaction with IEC-6 cell monolayers we identified the VSP9B10A protein...
August 2017: Experimental Parasitology
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"