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Littérature scientifique sur le sujet « Giardia lamblia »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 9 juin 2025

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Articles de revues sur le sujet "Giardia lamblia"

Šarić, Mirela, Anke Vahrmann, Daniela Niebur, Verena Kluempers, Adrian B. Hehl та Henning Scholze. "Dual Acylation Accounts for the Localization of α19-Giardin in the Ventral Flagellum Pair of Giardia lamblia". Eukaryotic Cell 8, № 10 (14 серпня 2009): 1567–74. http://dx.doi.org/10.1128/ec.00136-09.

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ABSTRACT A Giardia-specific protein family denominated as α-giardins, represents the major protein component, besides tubulin, of the cytoskeleton of the human pathogenic parasite Giardia lamblia. One of its members, α19-giardin, carries an N-terminal sequence extension of MGCXXS, which in many proteins serves as a target for dual lipid conjugation: myristoylation at the glycine residue after removal of the methionine and palmitoylation at the cysteine residue. As the first experimental evidence of a lipid modification, we found α19-giardin to be associated with the membrane fraction of disrupted trophozoites. After heterologous coexpression of α19-giardin with giardial N-myristoyltransferase (NMT) in E scherichia coli, we found the protein in a myristoylated form. Additionally, after heterologous expression together with the palmitoyl transferase Pfa3 in Saccharomyces cerevisiae, α19-giardin associates with the membrane of the main vacuole. Immunocytochemical colocalization studies on wild-type Giardia trophozoites with tubulin provide evidence that α19-giardin exclusively localizes to the ventral pair of the giardial flagella. A mutant in which the putatively myristoylated N-terminal glycine residue was replaced by alanine lost this specific localization. Our findings suggest that the dual lipidation of α19-giardin is responsible for its specific flagellar localization.

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Abbasi, Elnaz, Alireza Amouzandeh-Nobaveh, and Ehsanollah Ghaznavi-Rad. "The Frequency of the Intestinal Parasites Giardia Lamblia and Entamoeba Histolytica in Pediatric Diarrhea Specimens from Central Iran." Open Microbiology Journal 14, no. 1 (March 13, 2020): 53–56. http://dx.doi.org/10.2174/1874285802014010053.

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Introduction: Intestinal parasitic infections, particularly those caused by Giardia lamblia, are among the major health problems that exist worldwide, especially in developing countries. This study aimed to investigate the prevalence of the intestinal parasites Giardia lamblia and Entamoeba histolytica that were isolated from samples of infectious diarrhea in pediatric patients from Central Iran. Methods: This descriptive cross-sectional study included 230 samples of infectious diarrhea that were collected from May 2015 to February 2016. Direct observation, the formalin-ether sedimentation method and the technique using the Polymerase Chain Reaction (PCR) of β-giardin and EH primers were used for the identification of Giardia lamblia and Entamoeba histolytica. Results: Out of 230 samples of infectious diarrhea, five cases (2.1%) of Giardia lamblia and no cases (0%) of Entamoeba histolytica were identified using the formalin-ether sedimentation method and the same result were obtained using PCR technique. Of the five patients who had Giardia lamblia, three (60%) were male and two (40%) were female. The most common clinical symptoms in these patients were stomach ache and diarrhea (100%) and mucus in the stool (80%). Conclusion: Giardia lamblia was introduced as a parasitic agent causing diarrhea from Central Iran. The results indicate that pediatricians and, even more importantly, experts in laboratories should pay special attention to the identification of this parasite to treat the patients as effectively and as quickly as possible.

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Suman, MSH, MM Alam, SB Pun, A. Khair, S. Ahmed, and RY Uchida. "PREVALENCE OF GIARDIA LAMBLIA INFECTION IN CHILDREN AND CALVES IN BANGLADESH." Bangladesh Journal of Veterinary Medicine 9, no. 2 (January 24, 2013): 177–82. http://dx.doi.org/10.3329/bjvm.v9i2.13474.

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Giardia lamblia is highly infectious protozoan parasite capable of causing gastrointestinal illness in both humans and animals. The objective of this study was to determine the prevalence of Giardia lamblia infection in children < 5 years old and calves. Enzyme Linked Immunosorbent Assay (ELISA) has been used for the detection of Giardia lamblia. A total of 266 children and 15 calves diarrheic fecal samples were tested for Giardia lamblia during January 2011 to May 2012. The prevalence of Giardia lamblia infection among children was 3.8% while 13.3% in calves. Giardia lamblia was highest in children between 24 and 60 months of age (8.7%). Giardia lamblia infection was higher in male (4.7%) than in female (2.0%). Male calves (14.3%) have slightly higher prevalence than female calves (12.5%). The highest prevalence (33.3%) of Giardia lamblia infection in calves was between the ages 6 and 9 months. This is the first study to determine the prevalence of Giardia lamblia infection in calves using ELISA method in Bangladesh. A larger scale study is needed for accurate estimates of prevalence of Giardia lamblia to undertake an appropriate control strategy in future.DOI: http://dx.doi.org/10.3329/bjvm.v9i2.13474

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Eagle, Kim, and Ann M. Dvorak. "Giardia lamblia." New England Journal of Medicine 328, no. 14 (April 8, 1993): 1010. http://dx.doi.org/10.1056/nejm199304083281406.

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SHEFF, BARBARA. "Giardia lamblia." Nursing 34, no. 4 (April 2004): 76. http://dx.doi.org/10.1097/00152193-200404000-00056.

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Pickering, Larry K., and Paul G. Engelkirk. "Giardia lamblia." Pediatric Clinics of North America 35, no. 3 (June 1988): 565–77. http://dx.doi.org/10.1016/s0031-3955(16)36472-0.

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Sheff, Barbara. "Giardia lamblia." Nursing (Ed. española) 23, no. 1 (January 2005): 56. http://dx.doi.org/10.1016/s0212-5382(05)71348-0.

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Touz, María, Constanza Feliziani, and Andrea Rópolo. "Membrane-Associated Proteins in Giardia lamblia." Genes 9, no. 8 (August 10, 2018): 404. http://dx.doi.org/10.3390/genes9080404.

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The manner in which membrane-associated proteins interact with the membrane defines their subcellular fate and function. This interaction relies on the characteristics of the proteins, their journey after synthesis, and their interaction with other proteins or enzymes. Understanding these properties may help to define the function of a protein and also the role of an organelle. In the case of microorganisms like protozoa parasites, it may help to understand singular features that will eventually lead to the design of parasite-specific drugs. The protozoa parasite Giardia lamblia is an example of a widespread parasite that has been infecting humans and animals from ancestral times, adjusting itself to the changes of the environment inside and outside the host. Several membrane-associated proteins have been posted in the genome database GiardiaDB, although only a few of them have been characterized. This review discusses the data regarding membrane-associated proteins in relationship with lipids and specific organelles and their implication in the discovery of anti-giardial therapies.

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Mahdavi, Milad, Abdolhossein Dalimi, and Fatemeh Ghaffarifar. "Identification of Cryptosporidium oocyst and Giardia cyst in of the samples of raw surface water of Kan River in Tehran." Afghanistan Journal of Infectious Diseases 2, no. 2 (July 1, 2024): 1–8. http://dx.doi.org/10.60141/ajid/v.2.i.2/1.

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Background: Giardia and Cryptosporidium are considered the most important causal agents of non-bloody diarrhea, especially among primary school children, in many countries, including Iran. Many rivers are contaminated with Cryptosporidium oocyst and Giardia lamblia cysts due to domestic wastewater or farm wastewater and also the living of rodents on their margins. The present study aims to evaluate Kan River contamination with Cryptosporidium oocyst and Giardia cyst in Tehran by molecular method. Materials and Methods: Sampling was conducted from different parts of the Kan River in different seasons in 2019. Firstly, the smear has been prepared from sediments after filtering the water and collecting the sediment, stained with trichrome and acid-fast methods, and finally examined microscopically. Then, they were amplified with the Nested-PCR method by using the specific primers: the giardian gene from Giardia and the 18s rRNA gene from Cryptosporidium. Positive samples were sequenced, and a phylogenetic tree was drawn. Results: 12 suspected samples of Giardia cyst and 2 suspected samples of Cryptosporidium oocyst were detected, but only 4 samples infected with Giardia lamblia were molecularly found, and no Cryptosporidium infection was observed. In terms of genotype, the identified Giardia was 100% consistent with human isolates of genotype B. Conclusion: The presence of Giardia lamblia cysts in the water of the Kan River indicates the contamination of this river by human-contaminating parasites.

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Wei, Chao Jun, Xi Feng Tian, Rodney D. Adam, and Si Qi Lu. "Giardia lamblia: Intracellular localization of alpha8-giardin." Experimental Parasitology 126, no. 4 (December 2010): 489–96. http://dx.doi.org/10.1016/j.exppara.2010.05.028.

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Thèses sur le sujet "Giardia lamblia"

Crouch, Alan Arthur. "Immunodiagnosis of Giardia Lamblia." Thesis, Queensland University of Technology, 1988. https://eprints.qut.edu.au/36772/1/36772_Crouch_1988.pdf.

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Giardia lamblia is the most frequently reported protozoan parasite of the human intestine, causing significan morbidity worldwide. The method currently used in diagnostic medical laboratories for the detection of Giardia lamblia is the microscopic examination of stool specimen or duodenal fluid for the presence of cysts or trophozoites. This technique has been reported as insenstive, with less than 50% of infections diagnosed by the exmaination of one stool specimen.

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Jaegle, Christophe. "Giardia lamblia : risque hydrique." Strasbourg 1, 1988. http://www.theses.fr/1988STR15084.

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Weiland, Malin. "Immunodominant proteins in Giardia lamblia /." Stockholm, 2004. http://diss.kib.ki.se/2004/91-7140-158-X/.

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Bertrand, Sylvie. "Macrophage functions in Giardia lamblia infections." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61867.

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Cevalloas, Gaos Ana Maria. "Biological differences between Giardia lamblia isolates." Thesis, Queen Mary, University of London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309122.

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Bertrand, Isabelle Schwartzbrod Janine. "Détection et génotypage des kystes de Giardia lamblia à partir de matrices environnementales et d'échantillons biologiques." [s.l.] ([s.n.]), 2005. http://www.scd.uhp-nancy.fr/docnum/SCD_T_2005_0210_BERTRAND.pdf.

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Bertrand, Isabelle. "Détection et génotypage des kystes de Giardia lamblia à partir de matrices environnementales et d'échantillons biologiques." Nancy 1, 2005. http://docnum.univ-lorraine.fr/public/SCD_T_2005_0210_BERTRAND.pdf.

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Dans les pays industrialisés, les nombreuses épidémies d'origine hydrique dues aux protozoairesont souligné l'importance de ces micro-organismes longtemps sous-estimés par rapport aux bactéries et aux virus. Parmi ces protozoaires, Giardia lamblia est une espèce complexe composée de sept génotypesdont seulement deux sont considérés comme pathogènes pour l'Homme, mais aussi pour de nombreux mammifères. Les méthodes de référence actuelles font appel à l'immunofluorescence qui autorise uniquement la détection de l'ensemble des kystes du genre Giardia. Dans ce contexte, notre étude a pour objectif de développer des outils permettant une détection spécifique des espèces et des génotypes, puis de les transférer à l'analyse d'échantillons environnementaux et biologiques. La première partie de notre étude est réalisée uniquement à partir de kystes en suspensions purifiées. Dans un premier temps, nous avons sélectionné et validé un système de détection par PCR en temps réel permettant d'augmenter la spécificité de détection pour l'espèce Giardia lamblia par rapport à l'immunofluorescence. Au-delà de la mise en évidence de cette espèce, nous avons également mis en place deux PCR en temps réel assurant la détection spécifique des génotypes A et B pathogènes pour l'Homme, ainsi que deux PCR analytiques destinées à la mise en évidence des génotypes C et E spécifiques respectivement d'animaux domestiques et d'élevage. La sensibilité, la spécificité et la rapidité de détection constituent les avantages majeurs de ces différents outils. La deuxième partie de nos travaux vise à transférer ces techniques de détection à l'analyse d'échantillons environnementaux suite à l'évaluation de protocoles de concentration et de purification des kystes. Les techniques basées sur la détection du génome sont en effet sensibles à de nombreux composés inhibiteurs présents à des concentrations élevées dans les échantillons biologiques et surtout environnementaux, et pouvant alors entraîner une sous-estimation de la contamination par ces micro-organismes. Différentes techniques de purification basées sur la densité des éléments à purifier (flottation et gradients de densité), la séparation immunomagnétique (IMS), mais aussi des procédés destinés à limiter l'effet des inhibiteurs de PCR lors de l'extraction des acides nucléiques ou de leur amplification sont évalués au cours de cette étape. Le protocole sélectionné suite à ces expérimentations comporte une concentration par centrifugation suivie par une purification des kystes par séparation diphasique à l'acétate d'éthyle et une flottation sur solution de PercollTM-saccharose (d : 1,10). L'étape d'extraction des acides nucléiques est également modifiée au niveau de la digestion de protéines et de la purification des acides nucléiques. La troisième partie constitue l'étape majeure de notre étude puisqu'elle concerne tout d'abord la détection de l'espèce Giardia lambha suivie par une analyse plus fine au niveau des génotypes. La détection de l'espèce G. Lamblia s'avère alors positive pour l'ensemble des prélèvements. Des disparités sont ensuite mises en évidence pour les génotypes. Le génotype A est ainsi isolé au niveau des stations d'épuration et de l'abattoir, alors que le génotype B, plus rarement mis en évidence, n'est détecté dans aucun échantillon provenant de l'abattoir. La détection du génotype E confirme la différence observée entre ces sites puisqu'il est détecté uniquement dans les eaux usées de l'abattoir et apparaît comme un marqueur potentiel de contamination non-humaine. Les systèmes spécifiques des génotypes A et B ont également permis de génotyper des kystes de Giardia lamblia isolés de selles humaines. Le génotype B apparaît alors comme nettement majoritaire pour l'ensemble des prélèvements quelque soit leur origine. Cette première étude réalisée en France permet de détecter les génotypes B et A dans 64 % et 36 % des cas sporadiques respectivement. L'analyse de cas regroupés aboutit également à la mise en évidence du génotype B. Ces expérimentations démontrent l'intérêt des techniques de biologie moléculaire pour une détection rapide, sensible et spécifique, mais aussi pour le génotypage de ce protozoaire au niveau environnemental et biologique.

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Villazana-Kretzer, Diana L. "Giardia lamblia genomic and molecular analyses of flippase /." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2008. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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Fernandes, Tayane Gonçalves. "Efeito da ciclohexilamina sobre trofozoítos de Giardia lamblia." Centro de Pesquisas Gonçalo Moniz, 2014. https://www.arca.fiocruz.br/handle/icict/9955.

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Submitted by Ana Maria Fiscina Sampaio (fiscina@bahia.fiocruz.br) on 2015-04-10T17:17:19Z No. of bitstreams: 1 Tayane Gonçalves Fernandes Efeito....pdf: 3094368 bytes, checksum: 87dc6aa455511d7e1892b6398cc286a4 (MD5) Approved for entry into archive by Ana Maria Fiscina Sampaio (fiscina@bahia.fiocruz.br) on 2015-04-10T17:17:27Z (GMT) No. of bitstreams: 1 Tayane Gonçalves Fernandes Efeito....pdf: 3094368 bytes, checksum: 87dc6aa455511d7e1892b6398cc286a4 (MD5) Made available in DSpace on 2015-04-10T17:17:27Z (GMT). No. of bitstreams: 1 Tayane Gonçalves Fernandes Efeito....pdf: 3094368 bytes, checksum: 87dc6aa455511d7e1892b6398cc286a4 (MD5) Previous issue date: 2014 Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil A giardíase é uma doença causada pelo protozoário flagelado Giardia lamblia, e sua sintomatologia é caracterizada pela eliminação de fezes esteatorréicas, dores abdominais e náuseas. Segundo o CDC estima-se que há cerca 1,2 milhões de casos por ano de giardíase, acometendo principalmente crianças em idade escolar. Atualmente, o tratamento da giardíase é realizado principalmente pelo uso do fármaco da família dos 5-nitromidazóis, metronidazol (Flagyl®), secnidazol e tinidazol em particular. Estes são confrontados em casos de resistência clínica causada pelo frequente uso inadequado do medicamento e/ou abandono do tratamento. Além disso, o metronidazol pode apresentar efeito carcinogênico em longo prazo em humanos. Desta forma, novos estudos com análogos e/ou inibidores de poliaminas podem levar à elucidação dos mecanismos de ação envolvidos, favorecendo o estabelecimento de novos regimes terapêuticos mais seguros e eficazes. Em nosso trabalho, foram testadas as substâncias ciclohexilamina (CHA) e o metronidazol que são produtos sintéticos, com o objetivo de avaliar os seus efeitos na proliferação celular, caracterização dos moduladores do metabolismo de poliaminas, avaliação nas mudanças no potencial redox e elucidação de seus possíveis mecanismos de ação nos trofozoítos de Giardia lamblia. Foi realizada uma avaliação da proliferação celular na presença de CHA para trofozoítos de Giardia lamblia, onde observamos que a substância demonstrou ter ação siginficativa apresentando um efeito dosedependente. Observamos que os trofozoítos de G. lamblia apresentam uma inibição significativa do crescimento em presença de concentrações milimolares do CHA, cujo IC50 em 72 horas foi de 1,646 mM. Ao avaliar a produção de lipoperóxidos nos trofozoítos foi observado o possível papel do CHA como promotor de estresse oxidativo neste parasito. Ao realizar microscopia eletrônica de varredura (MEV) os trofozoítos apresentaram morfologias completamente irregulares em diferentes concentrações da CHA, com internalização do disco adesivo, sendo corroborado com os resultados da microscopia eletrônica de transmissão (MET) que mostram o processo de encistamento seguido de necrose celular. Esses resultados indicam que a CHA é possível candidata para o uso terapêutico contra a giardíase. Giardiasis is a disease caused by the flagellate protozoan Giardia lamblia, and its symptomatology is characterized by steatorrhea, abdominal pain and nausea. According to the CDC, an estimate number of 1.2 million cases of giardiasis happen every year, affecting especially schoolchildren.Nowadays, giardiasis treatment is based on drugs from the 5-nitroimidazole family, particularly metronidazole (Flagyl), secnidazole and tinidazole. Those drugs are indiscriminately used by the population, and it's not uncommon to find them causing clinical resistance due to inappropriate utilization and/or tratment abandon. Besides that, metronidazole can present longterm carcinogenic effect in humans. Thus, new studies with analogs and/or polyamines inhibitors can lead to the clarification of the drugs action mechanis, favouring the establishment of new, safer and more efficient therapeutic regimens.Our work tested cyclohexylamine (CHA) and metronidazole, wich are synthetic products, in order to evaluate their effects on cell proliferation and on changes in redox potential, characterize polyamines metabolism modulator and describe their possible action mechanisms on Giardia lamblia trophozoites. We evaluated Giardia lamblia trophozoites cell proliferation in the presence of CHA; it was observe that the substance shows significant action, presenting dose-dependent effect. We also observed that G. lamblia trophozoites presented significant growth inhibition when exposed to millimolar concentrations of CHA - its IC50 in 72 hours was 1,646mM. When assessed the lipoperoxides production in trophozoites, we observed a possible role of CHA as an oxidative stress promoter in the parasite.Under Scanning Electron Microscopy, trophozoites showed completely irregular morphologies in different CHA concentrations, with internalization of the adhesive disc; this results are corroborated by the Transmission Electron Microscopy results, wich showed the process of encystment followed by cell necrosis. This makes CHA a possible candidate for therapeutic use against giardiasis.

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Lenaghan, Scott Sundermann Christine A. "Molecular responses of Giardia lamblia to gamma-irradiation." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SUMMER/Biological_Sciences/Dissertation/Lenaghan_Scott_38.pdf.

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Livres sur le sujet "Giardia lamblia"

Rohrer, Lucia. Biochemische Untersuchungen an Giardia lamblia. [s.l.]: [s.n.], 1987.

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Lindmark, Donald G. Cytochemical methods for assessing Giardia cysts viability. Research Triangle Park, NC: U.S. Environmental Protection Agency, Health Effects Research Laboratory, 1988.

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Malcolm, Wallis Peter, and Hammond Brian 1934-, eds. Advances in giardia research. Calgary: University of Calgary Press, 1988.

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Williams, Fred P. Electron microscopic examination of Giardia cultures for viruses. Cincinnati, OH: U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory, 1990.

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Association, American Water Works, ed. Giardia lamblia in water supplies: Detection, occurrence, and removal. Denver, Colo: American Water Works Association, 1985.

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Maloney, Stephen W. Evaluation of portable water treatment devices for removing Giardia lamblia from natural waters. Missoula, Mont: Technology & Development Program, 1991.

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Maurice, Clark Robert, and Risk Reduction Engineering Laboratory (U.S.), eds. Predicting the inactivation of giardia lamblia: A mathematical and statistical model. Cincinnati, Ohio: U.S. Environmental Protection Agency, Risk Reduction Engineering Laboratory, 1990.

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Ongerth, J. E. A study of water treatment practices for the removal of Giardia lamblia cysts. Denver, Colo: American Water Works Association, 1989.

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Bellamy, William D. Filtration of giardia cysts and other substances: Volume 2, slow sand filtration. Cincinnati, OH: U.S. Environmental Protection Agency, Water Engineering Research Laboratory, 1985.

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Chapitres de livres sur le sujet "Giardia lamblia"

Conrady, Christopher D., and Albert T. Vitale. "Giardia Lamblia." In Uveitis, 221–23. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-52974-1_48.

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Breek, Olaf. "Giardia lamblia." In Kleine kwalen bij kinderen, 631–35. Houten: Bohn Stafleu van Loghum, 2017. http://dx.doi.org/10.1007/978-90-368-1696-0_127.

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Mehlhorn, Heinz. "Giardia lamblia." In Lexikon der Infektionskrankheiten des Menschen, 341–44. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-39026-8_398.

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Schubert, Stefan, and Christoph Lübbert. "Giardia lamblia." In SpringerReference Innere Medizin, 1–7. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-54676-1_310-1.

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van Balen, J. A. M., A. A. Demeulemeester, M. Frölich, K. Mohrmann, L. M. Harms, W. C. H. van Helden, L. J. Mostert, and J. H. M. Souverijn. "Giardia lamblia." In Memoboek, 109. Houten: Bohn Stafleu van Loghum, 2012. http://dx.doi.org/10.1007/978-90-313-9129-5_57.

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Singer, Steven M., Jenny G. Maloney, and Camila H. Coelho. "Giardia lamblia." In Laboratory Models for Foodborne Infections, 635–53. Boca Raton : CRC Press/Taylor & Francis, 2017. | Series: Food microbiology series: CRC Press, 2017. http://dx.doi.org/10.1201/9781315120089-40.

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Ikan, Nadia. "Giardia lamblia." In Kleine Kwalen bij kinderen, 647–51. Houten: Bohn Stafleu van Loghum, 2021. http://dx.doi.org/10.1007/978-90-368-2739-3_131.

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Lauwaet, Tineke, and Frances D. Gillin. "Signaling Pathways in Giardia lamblia." In Giardia, 201–9. Vienna: Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0198-8_12.

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Breek, T. O. "114 Giardia lamblia." In Kleine kwalen bij kinderen, 595–99. Houten: Bohn Stafleu van Loghum, 2016. http://dx.doi.org/10.1007/978-90-368-1394-5_114.

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Mehlhorn, Heinz. "Giardia lamblia Ploidy." In Encyclopedia of Parasitology, 1120. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_4682.

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Actes de conférences sur le sujet "Giardia lamblia"

Pereira Rodrigues, Victor Hugo, Maria Fantinatti, Tiago Roux Oliveira, and LIU HSU. "Controle Populacional de Giardia lamblia." In ANAIS DO 14º SIMPóSIO BRASILEIRO DE AUTOMAçãO INTELIGENTE. Galoa, 2019. http://dx.doi.org/10.17648/sbai-2019-111578.

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Araújo, RC, FJ Silva, MB Cruz, and MDV Martino. "INFECÇÕES POR PARASITAS NO CENÁRIO PÓSPANDEMIA COVID-19." In Resumos do 55º Congresso Brasileiro de Patologia Clínica/Medicina Laboratorial, 114. Zeppelini Editorial e Comunicação, 2023. http://dx.doi.org/10.5327/1516-3180.141s2.8390.

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Objetivo: O objetivo desta pesquisa é entender os impactos da pandemia de Covid-19 na sociedade, a repercussão dessas transformações nos próximos anos e sua relação com a parasitose. Método: Foi realizado um estudo transversal descritivo e analítico de coleta de dados sobre as parasitoses, de uma determinada região, comparando dados de 2016 com 2022, a fim de investigar o cenário pós-pandemia. Conclusão: Conclui-se que, no ano de 2016, foram identificadas 19.909 coletas, sendo 1217 (6,12%) achados de Blastocystis hominis, 172 (0,86%) de Endolimax nana, 166 (0,83%) de Entamoeba coli e 138 (0,69%) de Giardia lamblia. Em 2022, identificaram-se 13.993 coletas: 300 (2,14%) casos de Blastocystis hominis; 214 (1,52%) de Endolimax nana; 100 (0,7%) de Entamoeba coli; e 48 (0,3%) de Giardia lamblia. Assim, constata-se uma diminuição de 30%. Em 2016, houve 1693 pacientes com parasitoses, enquanto, no ano de 2022, tivemos 662 pacientes, o que representa uma diminuição de 39%. Referência: 1. Figueiredo BB. Parasitologia. 2015.

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Abed Muhsin AL-HABOOBI, Zainab, Huda Dhaher AL-MARSOMY, and Haleema Salman SALIH. "A CROSS-SECTIONAL STUDY OF STOOL SAMPLES FOR SOME LOCAL AND INTERNATIONAL ARRIVALS TO KARBALA GOVERNORATE DURING A RELIGIOUS VISIT." In V. International Scientific Congress of Pure, Applied and Technological Sciences. Rimar Academy, 2022. http://dx.doi.org/10.47832/minarcongress5-15.

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Background: Every year in Karbala/ Iraq, millions of visitors (pilgrims) from different nationalities were meet, which give the possibility for the parasitic diseases to spread between them.Objective: The study of the pilgrims(Iraqi and non-Iraqi)lassociated infections in Karbala during the period ofʿinvist. Subjects And Methods :A wet amount of smear were done for 567 patients severing from intestinal symptoms. Results: A high number of visitors were male in the age group below thirty .most patients were in the mild stage of the disease. Monilia was the comments infectious agent in both patients group( Iraqi and non -Iraqi ),Entameaba histolytica /E. dispar and Giardia lamblia was the common protozoal infection in Iraqi patients.In non-Iraqi Giardia lamblia had the high per centage than Iraqi type ,The mean age of the patients was 26.56 ±5.573 years and the age below thirty was the majority percentage (46%). A total of 198 males and 119 females were enrolled. . According to the governorate, results showed the highest numbers were from Babylon (17.4%)and the lower from Mathnaa governorate (3.5%) Conclusion: Through the results, it was found that the parasite Giardia lamblia appears in all cases is resistant to all climatic conditions, indifferent in time or place and that it is necessary to develop an effective measure to prevent the parasite transmission between the visitors. It appeared the presence of Diphyllobothrium latum which does not live in our local atmosphere, and the intermediate host and carrier need a cold atmosphere. This is why its appearance in some arrivals from the Hilla area indicates a change in the presence of the host

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Shida, Felipe Seiji, Elenice Messias do Nascimento Gonçalves, Dorca Lopes, Ana Lucia de Carvalho Avelino, and Vera Lucia Pagliusi Castilho. "Relato de caso: infecções de repetição por Giardia lamblia em paciente imunossuprimido." In Resumos do 56º Congresso Brasileiro de Patologia Clínica/Medicina Laboratorial, 136. Zeppelini Editorial e Comunicação, 2024. https://doi.org/10.5327/1516-3180.142s1.12844.

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Objetivo: A imunodeficiência comum variável é a segunda imunodeficiência primária mais comum, após a deficiência de IgA. Entre 20 e 60% dos pacientes apresentam sintomas gastrintestinais, com a Giardia lamblia, um protozoário flagelado, presente em 30% dos casos. Esse patógeno, transmitido por água ou alimentos contaminados, pode causar diarreia grave sem tratamento. Este trabalho destaca a importância de um exame parasitológico de fezes de qualidade, especialmente para pacientes imunocomprometidos. Método: Este trabalho analisou o caso de um paciente masculino, 33 anos, de São Paulo, com diarreia crônica (cerca de 10 vezes ao dia) há 2 anos e meio, piorando nos últimos 2 meses, atingindo 30 evacuações diárias com muco. O paciente perdeu 17 kg, apresentou astenia e dor abdominal em cólica. Diagnosticado com imunodeficiência comum variável e doença inflamatória intestinal, tentou tratamento com mesalazina e azatioprina, ambos sem sucesso. Relatou múltiplos episódios de giardíase associados à imunodeficiência. Encaminhado a hospital terciário de São Paulo com hipocalemia. Exame parasitológico de fezes evidenciou Giardia lamblia por meio do exame direto, do método de Lutz/Hoffman, Pons e Janer, de Faust e cols., e pela coloração de Tricrômio, levando à otimização do tratamento com metronidazol. Após 15 dias, o paciente melhorou significativamente, com apenas 3 evacuações diárias. Recebeu alta em bom estado, com prescrição de imunoglobulina mensal e albendazol profilático. Conclusão: Pacientes imunocomprometidos são mais suscetíveis a infecções, incluindo a causada pela Giardia lamblia. A higiene pessoal e alimentar é crucial para evitar o contágio. Um exame parasitológico de fezes bem elaborado, utilizando diversos métodos para detectar patógenos, é essencial para fornecer um diagnóstico confiável e iniciar o tratamento adequado, prevenindo complicações.

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Hashim Oubid, Sarah. "Evaluation of Serum level of Ghrelin, Adiponectin and Cholecystokinin and some Hematological variables in Giardia lamblia Infected Patients in Kirkuk city." In II. International Rimar Congress of Pure and Applied Sciences. Rimar Academy, 2024. https://doi.org/10.47832/rimarcongresspas02-04.

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Background: The parasite G . lamblia is one of the most widespread intestinal parasites that infect humans throughout the world, causing giardiasis. It is a single-celled parasite that has attracted scientific interest not only for its spread throughout the world, but for its internal membrane system as well. Therefore, the research aimed to evaluate the levels of Ghrelin, adiponectin and Cholecystokinin and some hematological variables in patients infected with the G. lamblia . Objective: The current study was designed to evaluation of G. lamblia infection effects on some biomarkers such as ghrelin , adiponectin and Cholecystokinin . Methods: The study was conducted on 80 patients infected with G. lamblia and 300 healthy people (control group), who attended the Al-Jumhuri general hospital of Kirkuk city from 1/4/2024-15/6/2024. The results : The results showed a significant (P<0.05) elevated in serum concentration of (Adiponectin , Cholecystokinin , White blood cellWBC , Erythrocyte sedimentation rate -ESR , C-Reactive protein- CRP , IgM ) and a significant decrease in concentration of ( Ghrelin , Packed cell volume-PCV , Hemoglobin-Hb , IgA, Ig G ) in G. lamblia infected patients compered healthy people. Prevalence rate :- The result showed that the infection rate with the G . lamblia parasite was 80 samples (26.6%), while 220 samples (73.4%) were uninfected. In terms of gender, the results showed that the highest percentage was for females, at 62.5%, compared to males, which recorded the lowest percentage, as It was 37.5%. Conclusion: Ghrelin , adiponectin and cholecystokinin and some variables are important physiological and hematological biomarkers that can support the diagnosis of G. lamblia parasite.

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Santos, Diego Rodrigues Pena dos, Lídia Freire Abdalla Nery, Cyra Mesquita de Araujo, Bruno Oliveira Barreto, and Isabela de Oliveira Moura. "Análise do perfil parasitológico de pacientes atendidos em um laboratório de análises clínicas de Uberaba, Minas Gerais, no ano de 2023." In Resumos do 56º Congresso Brasileiro de Patologia Clínica/Medicina Laboratorial, 32. Zeppelini Editorial e Comunicação, 2024. https://doi.org/10.5327/1516-3180.142s1.10486.

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Objetivo: As parasitoses intestinais são muito frequentes na infância e são consideradas um problema de saúde pública, principalmente nas áreas rurais e nas periferias das cidades dos países em desenvolvimento, em que são mais comuns. O objetivo deste estudo foi analisar o perfil parasitológico de pacientes em um laboratório de análises clínicas em Uberaba, Minas Gerais, no ano de 2023. Método: Os dados foram obtidos de um banco de dados sem identificação individual, com dispensa de tramitação pelo sistema CEP/CONEP (art. 1º, item V, Resolução n. 510/2016). Neste estudo, foram analisados os resultados do perfil parasitológico em pacientes no período de 1º de janeiro a 31 de dezembro de 2023, obtidos por meio da extração de dados do SIL do laboratório. As amostras foram coletadas no sistema CoproPlus Ultra (formalina 5 e 10% Tamponada, SAF e ECO), que proporciona um procedimento padronizado para a rotina de coleta, transporte, preservação, concentração e análise de parasitas intestinais em amostras de fezes. Conclusão: Durante o período de avaliação, 6.692 pacientes realizaram exames parasitológicos. Destes, 6.244 pacientes (93,31%) apresentaram resultados negativos, e 448 (6,69%), resultados positivos. Os parasitas com maior incidência nas análises realizadas foram: cistos de Endolimax nana, com 178 pacientes (2,66%); cistos de Entamoeba coli, com 171 pacientes (2,56%); cistos de Giardia lamblia, com 77 pacientes (1,15%); cistos de Entamoeba histolytica/dispar, com 16 pacientes (0,24%). Juntos, esses parasitas representam 98,66% dos parasitas identificados. Os parasitas cistos de Giardia lamblia, trofozoítos de Giardia lamblia, cistos de Iodamoeba butschlii, larvas de Strongyloides stercoralis, ovos de Schistosoma mansoni e ovos de Ancylostoma duodenale foram identificados em seis pacientes, representando 1,34% dos parasitas. Os dados obtidos neste estudo indicam que 448 pacientes (6,69%) apresentaram resultados positivos, destacando a importância do controle dessas parasitoses.

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Romero, Manuel, Jardi Noa, Alberto Gómez, Cristina Espuche, Laura Sánchez, Miriam Alajarín, Alejandro Martínez, Juan Egea, and Fernando Alberca. "Un hallazgo inusual. Úlcera duodenal por Giardia lamblia en un paciente asintomático." In 45 Congreso Nacional de la Sociedad Española de Endoscopia Digestiva. Grupo Pacífico, 2023. http://dx.doi.org/10.48158/seed2023.p283.

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Shida, FS, VLP Castilho, EMN Gonçalves, AJU Frizera, DGA Oliveira, GR Silva, and JCE Borges. "COINFECÇÃO POR GIARDIA LAMBLIA, ENTAMOEBA COLI E BLASTOCYSTIS SPP. EM PACIENTE HIV POSITIVO – RELATO DE CASO." In Resumos do 55º Congresso Brasileiro de Patologia Clínica/Medicina Laboratorial, 114–15. Zeppelini Editorial e Comunicação, 2023. http://dx.doi.org/10.5327/1516-3180.141s2.8640.

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Objetivo: A finalidade deste trabalho é relatar um caso de coinfecção por Giardia lamblia, Entamoeba coli e Blastocystis spp. em paciente HIV positivo, levando a quadro de diarreia crônica. Método: Paciente A. Q. D. S., 47 anos, sexo masculino, apresentava, há três meses, quadro de diarreia líquida, com média de seis evacuações/dia, além de hematoquezia, muco nas fezes e perda ponderal de 7 kg nesse período. Um mês após o início dos sintomas, procurou o pronto-socorro, onde foi prescrito ciprofloxacino, sem melhora; após 10 dias desse atendimento, procurou outro pronto-socorro, onde foi feito diagnóstico de infecção por HIV por meio de teste rápido. Permaneceu em observação por 24 horas, sendo administrado ceftriaxone, metronidazol e azitromicina. Recebeu alta com prescrição de bactrim. Ele foi encaminhado para um ambulatório de infectologia, onde foram indicados nitazoxamida e bactrim e solicitados exames parasitológicos de fezes, para pesquisa de patógenos que poderiam estar causando quadro diarreico crônico. Conclusão: Realizado exame parasitológico das fezes, com os métodos Faust et al., Rugai modificado, Lutz/Hoffman, Pons e Janer e coloração de Tricrômio. Giardia lamblia e Entamoeba coli foram detectadas pelos métodos de Faust et al. e Lutz/Hoffman, Pons e Janer. As colorações Kinyoun e Leishman detectaram cistos de G. lamblia e Blastocystis spp. A coloração de Gram-Chromotrope (para microsporídeos) não detectou nenhum dos patógenos. O paciente retornou ao ambulatório três semanas após, com melhora da diarreia, mas mantinha hematoquezia; prescreveram-se albendazol e metronidazol. Aguardamos retorno. Demonstramos a importância de um método de coloração na rotina de exame parasitológico, principalmente em amostras de pacientes imunodeprimidos, como o caso descrito, em que os três protozoários foram detectados pela coloração de Tricrômio. Para realização deste trabalho, utilizaram-se a análise de prontuário eletrônico e a revisão de exames realizados.

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Sanchez, Victor, Ernesto Iturrizaga, Jonathan Leon, and Christian Del Carpio. "An Algorithm for Giardia Lamblia Detection in Digital Images Acquired Through an Optical Microscope." In 2018 Congreso Internacional de Innovación y Tendencias en Ingeniería (CONIITI) [International Congress of Innovation and Trends in Engineering]. IEEE, 2018. http://dx.doi.org/10.1109/coniiti.2018.8587100.

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Chen, Jun, Scott C. Lenaghan, and Mingjun Zhang. "Analysis of dynamics and planar motion strategies of a swimming microorganism — Giardia lamblia." In 2012 IEEE International Conference on Robotics and Automation (ICRA). IEEE, 2012. http://dx.doi.org/10.1109/icra.2012.6225014.

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