Academic literature on the topic 'Dysenterie'

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Journal articles on the topic "Dysenterie"

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Arthur, Magimbi, Adamu Almustapha Aliero, and John Odda. "ANTIBACTERIAL ACTIVITY OF ETHANOL CRUDE EXTRACTS OF WHOLE PLANT OF THE UGANDAN PHYLLANTHUS AMARUS SCHUMACH. & THONN AGAINST SHIGELLA DYSENTERIAE." Bacterial Empire 2, no. 2 (2019): 33. http://dx.doi.org/10.36547/be.2019.2.2.33-36.

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Apart from being used for the treatment of malaria fevers, mono-herbal preparation of Ugandan Phyllanthus amarus is widely by local communities in central Uganda, for treatment of bacterial dysentery. However, efficacy studies regarding the mono-herbal extracts of the Ugandan Phyllanthus amarus against Shigella dysenteriae is lacking. The present study was aimed at determined the antibacterial activity of aqueous ethanol crude extracts of whole plant of Phyllanthus amarus against Shigella dysenteriae. Whole plant of Phyllanthus amarus was collected from Wakiso district central of Uganda. Different concentrations (128µg/ml, 256µg/mL-1 and 512µg/ mL-1) of the ethanol crude extract of whole plant of Phyllanthus amarus were tested against Shigella dysenteriae using agar well diffusion method. Minimum inhibitory concentration (MIC) was determined using broth tube dilution method while Minimum bactericidal concentration (MBC) was determined by culture method. The results of this study showed that, Shigella dysenteriae was sensitive to different concentrations (128µg/ mL-1, 256µg/ mL-1and 512µg/ mL-1) of ethanol crude extract of whole plant of Phyllanthus amarus possessed antibacterial against Shigella dysenteriae with mean and standard error mean zone of inhibition ranging from 11.5±0.5 to 13.5±0.5mm, while the positive control had mean and standard error mean zone of inhibition 24.5±0.5mm. The MIC and MBC of the ethanol crude extract of whole plant of Phyllanthus amarus against Shigella dysenteriae was found to be 32µg/ml and 64µg/ml respectively. This study found that the whole plant of phyllanthus amarus of ethanol crude extract was active against Shigella dysenterie. Further study should be carried out test whole plant Phyllanthus amarus crude extract on different microorganisms that cause dysentery to find out its activity against them and spectrum, determine lead compound in the whole plant Phyllanthus amarus crude extract responsible for the anti-microbial activity against Shigella dysenteriae and also determine the mechanism of action by which this plant crude extract inhibits Shigella dysenteriae.
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Nicolas, Xavier, Hervé Granier, and Patrick Le Guen. "Shigellose ou dysenterie bacillaire." La Presse Médicale 36, no. 11 (2007): 1606–18. http://dx.doi.org/10.1016/j.lpm.2007.03.001.

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Kauffmann., Von F. "ZUR SEROLOGIE DER DYSENTERIE-GRUPPE." Acta Pathologica Microbiologica Scandinavica 19, no. 1 (2009): 53–78. http://dx.doi.org/10.1111/j.1699-0463.1942.tb03335.x.

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Kauffmann, F. "ZUR SEROLOGIE DER DYSENTERIE-GRUPPE." Acta Pathologica Microbiologica Scandinavica 20, no. 1 (2009): 53–78. http://dx.doi.org/10.1111/j.1699-0463.1943.tb04786.x.

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Terpstra, J. I. "Infektiöse Dysenterie (Doyle) der Schweine." Zentralblatt für Veterinärmedizin Reihe B 17, no. 1 (2010): 175–77. http://dx.doi.org/10.1111/j.1439-0450.1970.tb01528.x.

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Figi, R., F. Goldinger, E. Fuschini, S. Hartnack, and X. Sidler. "Modifizierte Dysenterie-Teilsanierung in einem Kernzuchtschweinebetrieb." Schweizer Archiv für Tierheilkunde 156, no. 8 (2014): 373–80. http://dx.doi.org/10.1024/0036-7281/a000613.

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Defauw, P., L. Vande Maele, D. Maes, and F. Van Immerseel. "Vraag & Antwoord." Vlaams Diergeneeskundig Tijdschrift 84, no. 1 (2015): 55–59. http://dx.doi.org/10.21825/vdt.v84i1.16623.

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Kauffmann, F. "Über Antigenbeziehungen Zwischen Coli-Dysenterie- Und Salmonella-Bakterien." Acta Pathologica Microbiologica Scandinavica 21, no. 1 (2009): 72–86. http://dx.doi.org/10.1111/j.1699-0463.1944.tb00034.x.

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Kauffmann, F. "SUPPLEMENT TO THE PAPER »ZUR SEROLOGIE DER DYSENTERIE-GRUPPE«." Acta Pathologica Microbiologica Scandinavica 25, no. 5 (2009): 619–20. http://dx.doi.org/10.1111/j.1699-0463.1948.tb00703.x.

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Sindbjerg-Hansen, V. "ANWENDUNG VON MUCIN-INFEKTIONEN ZUR UNTERSUCHUNG VON SERUM GEGEN GIFTARME DYSENTERIE-BAKTERIEN." Acta Pathologica Microbiologica Scandinavica 20, no. 3 (2009): 442–49. http://dx.doi.org/10.1111/j.1699-0463.1943.tb05007.x.

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Dissertations / Theses on the topic "Dysenterie"

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Le, heiget Guillaume. "Conception de tétrasaccharides orthogonalement protégés, précurseurs d’antigènes représentatifs d’une sélection de sérotypes de shigella flexneri." Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCD043.

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Les maladies diarrhéiques sont la deuxième cause de mortalité chez les enfants de moins de cinq ans. Les entérobactéries Shigella flexneri sont les principales responsables de la forme endémique de la shigellose, une maladie diarrhéique importante dans les pays en développement et pour laquelle de nombreuses stratégies vaccinales sont à l’étude. La partie polysaccharidique (antigène O, Ag-O) du lipopolysaccharide de surface est l’une des cibles majeures d'immunité protectrice contre la réinfection. Une grande variété d’Ag-Os, reflétant la diversité sérotypique, a été identifiée. De façon intéressante ces Ag-Os se différencient par la nature des substituants portés par le tétrasaccharide ABCD qui définit leur squelette commun. Afin de développer un vaccin issu de sucres de synthèse à large couverture sérotypique contre S. flexneri, des stratégies de synthèse hautement convergente d’analogues orthogonalement protégés du tétrasaccharide ABCD ont été explorées. Elles prennent en compte les sites de -D-glucosylation et de O-acétylation spécifiques de sérotypes. Les approches mises en place s’appuient sur la synthèse d’une diversité de précurseurs en série L-rhamnopyranose et 2-N-acétyl-2-désoxy-D-glucopyranosamine et leurs combinaisons optimisées. Quelques exemples de glucosylation 1,2-cis régiosélective, chimique et/ou enzymatique, valident le concept<br>Diarrhoeal diseases are the second cause of death among children under five. Shigella flexneri enterobacteria are the main causative agents of the endemic form of shigellosis, a diarrhoeal disease of high prevalence in developing countries and one for which numerous vaccine strategies are under studied. The polysaccharide part (O-antigen, O-Ag) of the bacterial lipopolysaccharide is a major target of protective immunity against reinfection. A large variety of O-Ags, expressing serotypic diversity, has been identified. Interestingly, these O-Ags differ by the nature of the substitutions occurring on the ABCD tetrasaccharide, which defines their common backbone. In order to develop a synthetic carbohydrate-based vaccine with broad serotype coverage against S. flexneri, highly convergent synthetic strategies towards orthogonally protected analogs of tetrasaccharide ABCD were investigated, while taking into account serotype-specific -D-glucosylation and O-acetylation sites. The selected approaches feature the synthesis of a variety of suitable L-rhamnopyranose and 2-N-acetyl-2-deoxy-D-glucopyranosamine precursors and their optimized combinations. The concept is supported by selected examples of 1,2-cis chemical and/or enzymatic glucosylation
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Nothelfer, Katharina. "Manipulation of the adaptive immune response by Shigella : Induction of B cell apoptosis dependent on the IpaD virulence factor." Paris 7, 2012. http://www.theses.fr/2012PA077159.

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Shigella, une bactérie à Gram-négatif, est l'agent responsable de la dysentrie bacillaire, une rectocolite aigüe caractérisée par l'invasion de la muqueuse colo-rectale et l'induction d'une inflammation aigüe accompagnée d'une destruction tissulaire massive. L'immunité naturelle, de courte durée, est médiée par des anticorps et requiert plusieurs infections pour être initiée. L'objectif de ce travail était d'analyser si le ciblage direct des lymphocytes par Shigella pouvait avoir un impact sur l'induction de la réponse spécifique. Nous rapportons ici que Shigella cible les lymphocytes B requis pour la mise en place de l'immunité protectrice. Dans un modèle d'infection ex vivo de tissu colique humain, nous montrons que Shigella interagit avec les cellules B et occasionnellement les envahit. In vitro et in vivo, nous observons une réduction de la population de lymphocytes B suite à l'infection par Shigella, et ce, de façon dépendante du système de secretion de type III (SST3). Cette réduction est liée à l'apoptose des cellules B, qui curieusement est indépendante de la translocation d'effecteurs du SST3 dans les lymphocytes B mais requiert le contact extracellulaire avec la protéine de virulence IpaD présente à l'extrémité de l'aiguille composant le SST3. En parallèle de ces résultats qui révèlent un nouveau mécanisme d'action du SST3 de type "touché-coulé", nous montrons que Shigella grâce à l'injection d'un effecteur via le SST3 cible aussi les lymphocytes T et inhibe leur migration. Ces résultats révèlent de nouveaux mécanismes développés par les bactéries pathogènes pour manipuler la réponse immune de l'hôte et limiter la mise en place d'une immunité protectrice<br>Shigellla is a Gram-negative bacterium responsible for bacillary dysentery, an acute recto-colitis reflecting invasion of the colonic and rectal mucosa that results in inflammation and massive tissue destruction. Antibody-mediated immunity to Shigella requires several episodes of infection to get primed and is short-lasting. The aim of this work was to investigate whether direct targeting of lymphocytes by Shigella could impair the priming of the specific response. We describe that Shigella targets B lymphocytes, the lymphocyte population that confers antibody-mediated protection against Shigella. In an ex vivo human colonic infection model wild-type (WT) Shigella, but not the Type Three Secretion System (T3SS) mutant, interacts with an occasionally invades B cells. In in vitro approaches, as well as in an in vivo murine infection model, we observe that the B cell pool is significantly reduced upon WT Shigella infection. Moreover, despite low invasion rates, Shigella induces apoptotic B cell death in a T3SS-dependent manner. Intriguingly, B cell apoptosis is not dependent on the translocation of virulence effectors into the host cell, but rather on the extracellular exposure of B cells to the Shigella virulence protein IpaD that is present at the tip of the T3SS needle. Additionally to these findings, which demonstrate a new "kiss and kill" mechanism of T3SS action, we describe an "injection-only" mechanism, by which Shigella targets T lymphocytes and inhibits their migration by injection of one of its T3SS effectors. These findings reveal novel mechanisms for pathogenic bacteria to undermine the host and impair the mounting of an effective protective immune response
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Distribué, Alexandre. "Étude d'histoire des épidémies : la suette, la peste, la variole et la dysenterie dans le nord de la France, 1348-1790." Electronic Thesis or Diss., Amiens, 2021. http://www.theses.fr/2021AMIE0051.

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Étude d'histoire des épidémies : la suette, la peste, la variole et la dysenterie dans le nord de la France, 1348-1790. Cette étude a pour objet la présentation et l'analyse, dans le nord de la France, de quatre maladies épidémiques : la suette, la peste, la variole et la dysenterie. L'angle principal d'étude est celui de l'épidémiologie : la symptomatologie, la dynamique et le bilan humain (morbidité, mortalité et létalité) des attaques épidémiques. Chaque maladie fait d'abord l'objet d'une étude particulière et indépendante, dans le cadre spatio-temporel du nord de la France entre 1348 et 1790. Une seconde partie reprend ensuite chaque élément afin d'étudier de manière synthétique l'ensemble des résultats. Les buts fixés à ce travail sont multiples : combler un vide historiographique puisqu'à notre connaissance jamais aucun travail portant sur les épidémies à l'époque moderne n'a été tenté ni publié, parvenir à une meilleure connaissance des caractéristiques épidémiologiques de chaque maladie, établir une ébauche de pathocénose épidémique qui demanderait à être complétée par l'étude des autres maladies sévissant dans notre aire spatio-temporelle<br>A study of the history of epidemics: the sweating sickness, the plague, smallpox and dysentery in northern France, 1348-1790. The purpose of this study is to present and analyze four epidemic diseases in the north of France: sweating sickness, plague, smallpox and dysentery. The main angle of study is that of epidemiology: the symptomatology, the dynamics and the human toll (morbidity, mortality and lethality) of epidemic attacks. Each disease is first the subject of a particular and independent study, in the spatio-temporal framework of northern France between 1348 and 1790. A second part then takes up each element in order to study all the results in a synthetic way. The aims of this work are multiple: to fill a historiographic void since, to our knowledge, no work on epidemics in the modern era has ever been attempted or published, to achieve a better knowledge of the epidemiological characteristics of each disease, to establish a draft of epidemic pathogenesis which would need to be completed by the study of other diseases raging in our spatio-temporal area
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Chassagne, Pierre. "En route vers des glycoconjugués à potentiel vaccinal contre la dysenterie bacillaire : synthèse d'oligosaccharides représentatifs de l'antigène O de Shigella flexneri sérotype 6." Thesis, Paris 5, 2012. http://www.theses.fr/2012PA05P603.

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Broach, William H. "Small RNAs of Shigella dysenteriae." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1406822539.

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Kouse, Andrew B. "Thermoregulation of Shigella Dysenteriae Factors by RNA Thermometers." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1407793559.

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au, yong song@murdoch edu, and Yong Song. "Application of a functional genomics approach to the identification of vaccine subunits and diagnostic antigens for use in the control of swine dysentery." Murdoch University, 2007. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20080416.131148.

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The intestinal spirochaete Brachyspira hyodysenteriae is the causative agent of swine dysentery (SD), a diarrhoeal disease of pigs which has significant economic impact worldwide. Controlling SD remains problematic, particularly as there is no effective vaccine and there are few definitive diagnostic methods available. In this study, a partial genomic sequence of B. hyodysenteriae was screened in silico. A total of 19 putative open reading frames (ORFs) encoding outer-membrane proteins then were selected and these were subjected to a laboratory screening process. To select potential universal vaccines, a preliminary study was conducted using PCR to determine the distribution of the putative genes in 23 strains of B. hyodysenteriae. A total of 17 of the 19 ORFs were considered to be suitable for further testing as they were found to be present in the majority of strains investigated. After molecular cloning and protein expression and purification, of 19 cloned candidate molecules derived from 17 genes (one large gene was divided into two parts encoding N and C terminal proteins, respectively), 14 were expressed in E. coli and the recombinant proteins were successfully produced. A variety of sera from pigs naturally and experimentally infected with B. hyodysenteriae were tested for reactivity with the 14 recombinant proteins in an immunoblotting assay. Seven molecules from six genes reacted strongly with the tested sera, and therefore were selected and used to immunize mice. All these proteins generated a specific antibody response. Post-immunization sera raised against each recombinant protein had the capacity to agglutinate B. hyodysenteriae cells, and also recognized the cognate proteins of B. hyodysenteriae in cell extracts. Further sequencing analysis demonstrated that these molecules were highly conserved in the genomes of different B.hyodysenteriae strains. Therefore, from the genomic based study, the products of six genes were identified as promising candidates for vaccines or as diagnostic targets. Four genes were expressed on a large scale, the product (NAV-H7, NAV-H17 Cterminal, NAV-H34 and NAV-H42) were combined into one vaccine, and then this preparation was used to immunise pigs that subsequently were challenged with B. hyodysenteriae. These antigens generate systemic and colonic antibody responses, and vaccination tended both to delay the onset of clinical signs and attenuate lesion development. Hence these recombinant proteins showed promise as components for further SD vaccines. Recombinant proteins from the selected genes also were used as antigens in class-specific ELISAs used as serological assays for SD. Three antigens (NAV-H8, NAV-H42 and Bhlp29.7) were selected as good indicators of seroconversion in IgM ELISAs, and these were evaluated further using a large range of serum samples. The NAV-H8 IgM ELISA using a cut-off value 2.5 times the mean value of all negative pigs could be used as a herd test for SD, and both the NAV-H8 and NAV-H42 IgM ELISAs had potential for detecting exposure to B. hyodysenteriae at the pig level.
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Панченко, О. П. "Ендоскопічна картина слизової оболонки товстого кишечника при дизентерії". Thesis, Видавництво СумДУ, 2001. http://essuir.sumdu.edu.ua/handle/123456789/22679.

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Чемич, Микола Дмитрович, Николай Дмитриевич Чемич, Mykola Dmytrovych Chemych та ін. "Епідемічний спалах гострої дизентерії". Thesis, Видавництво СумДУ, 2001. http://essuir.sumdu.edu.ua/handle/123456789/22463.

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Чемич, Микола Дмитрович, Николай Дмитриевич Чемич, Mykola Dmytrovych Chemych та ін. "Клинико-лабораторная оценка течения острой дизентерии во время эпидемической вспышки". Thesis, Издательство СумГУ, 1997. http://essuir.sumdu.edu.ua/handle/123456789/24739.

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Books on the topic "Dysenterie"

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Cobra, Claudine. The control of epidemic dysentery in Africa: Overview, recommendations, and checklists. U.S. Agency for International Development, Bureau for Africa, Office of Sustainable Development, Human Resources and Democracy Division, 1996.

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Barreto, Avertino. Análise epidemiológica das doenças diarreicas, cólera e disenteria em Moçambique, 1993. República de Moçambique, Ministério da Saúde, Direcção Nacional de Saúde, Departamento de Epidemiologia e Endemias, 1994.

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Maw, San San. A study on plant resources to cure dysentery in traditional medicine. Department of Botany, University of Mandalay, 2008.

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Bluefarb, Sam. The age of dysentery or-- how not to write a novel. Aventine Press, 2010.

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African Conference on Diarrhoeal Diseases (5th 1994 Kampala, Uganda). Proceedings of the 5th African Conference on Diarrhoeal Diseases (AFCODD): Uganda International Conference Centre, Kampala, Uganda, 15th-19th August 1994 : diarrhoea, old and new trends. s.n., 1994.

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Xiaoru, Zhang, ed. Bian bi, li ji. Ren min wei sheng chu ban she, 1985.

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Hogendorp, Katharine Harris van. Survival in the land of dysentery: The World War II experiences of a Red Cross worker in India. Sergeant Kirkland's, 1998.

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Trostbrief - Dysenterie. de Gruyter GmbH, Walter, 2016.

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DUCLOS-M. Études sur l'emploi du nitrate d'argent dans la dysenterie aiguë. Hachette Livre - BNF, 2018.

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Beowulf. Dissertatio Medica Inauguralis de Dysenteria. Creative Media Partners, LLC, 2018.

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Book chapters on the topic "Dysenterie"

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Mehlhorn, Heinz. "Dysenteria." In Encyclopedia of Parasitology. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_3824.

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Mehlhorn, Heinz. "Dysenteria." In Encyclopedia of Parasitology. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27769-6_3824-1.

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Mehlhorn, Heinz. "Dysenterias." In Encyclopedia of Parasitology. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_3825.

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Mehlhorn, Heinz. "Dysenterias." In Encyclopedia of Parasitology. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27769-6_3825-1.

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Jandu, Narveen, and Marcia B. Goldberg. "Dysentery." In The Prokaryotes. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-30144-5_100.

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Liu, Zhanwen. "Dysentery." In Essentials of Chinese Medicine. Springer London, 2009. http://dx.doi.org/10.1007/978-1-84882-596-3_13.

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Liu, Zhanwen. "Dysentery." In Essentials of Chinese Medicine. Springer London, 2010. http://dx.doi.org/10.1007/978-1-84882-112-5_33.

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Gooch, Jan W. "Dysentery." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_13605.

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Metze, Dieter, Tam Nguyen, Birgit Haack, et al. "Dysentery." In Encyclopedia of Molecular Mechanisms of Disease. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-29676-8_8420.

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Sagaert, Xavier. "Dysentery, Bacillary." In Encyclopedia of Pathology. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-40560-5_1458.

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Conference papers on the topic "Dysenterie"

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Ou, Lin, Rong Chen, Yanjiao Chen, Depin Li, and Caixia Wen. "Effect of different laser irradiation on the dysentery bacilli." In Photonics China '98, edited by Junheng Li and James A. Harrington. SPIE, 1998. http://dx.doi.org/10.1117/12.317877.

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Zhang, Hao, Chunpu Zou, Fengfeng Shao, and GuoZheng Li. "Effects of climate factors on bacillary dysentery epidemic in Harbin City, China." In 2013 IEEE International Conference on Bioinformatics and Biomedicine (BIBM). IEEE, 2013. http://dx.doi.org/10.1109/bibm.2013.6732701.

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"Production of Immunobiological Preparations as a Prerequisite to Demographic Modernisation: a Case of Bacteriological Institute at the Perm Governorate Zemstvo." In XII Ural Demographic Forum “Paradigms and models of demographic development”. Institute of Economics of the Ural Branch of the Russian Academy of Sciences, 2021. http://dx.doi.org/10.17059/udf-2021-1-6.

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The article refers to the creation of a bacteriological station (1897), then an institute (1912) under the zemstvo of the Perm governorate. To combat microbes, it was necessary to produce vaccines and serum. These institutions were the first in Russia to produce immunobiological preparations. The emergence of a solid material base and experienced personnel of the institute was investi gated based on a historical-genetic method. In the pre-revolutionary period, employees of the institute established successful production of vaccines against rabies, scarlet fever, cholera, typhoid fever and smallpox, as well as serums against diphtheria, dysentery, scarlet fever.
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Ma, Yu-Xia, and Shi-Gong Wang. "Effect of Climate Change on Spatial-Temporal Distribution of Bacillary Dysentery in Gansu Province, China." In 2009 3rd International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2009. http://dx.doi.org/10.1109/icbbe.2009.5162689.

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Zangana, Ashraf Jamal Mahmoud, Hanan Shihab Ahmad, and Isra'a Ismail Al-Taii. "A therapeutic attempt by water extract of mentha piperita for amoebic dysentery in vivo and its effect on blood image." In 1ST SAMARRA INTERNATIONAL CONFERENCE FOR PURE AND APPLIED SCIENCES (SICPS2021): SICPS2021. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0127590.

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Mohamed, Islam, Ahmed Moahmed, Mennatallah Abdelkader, Alaaeldin Saleh, and Ala-Eddin Al-Moustafa. "Elaeagnus Angustifolia: a Promising Medicinal Plant for Cancer Theraby." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0124.

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Introduction: Elaeagnus angustifolia (EA) is a medicinal plant that has been used for centuries in treating many human diseases, in the Middle East, including fever, amoebic dysentery, gastrointestinal problems. However, the effect of EA plant extract on human cancer progression especially oral malignancy has not been investigated yet. Thus, first we examined the effect of EA flower extract on angiogenesis in ovo, and on selected parameters in human oral cancer cells. Materials and methods: Chorioallantoic membranes (CAMs) of chicken embryos at 3-7 days of incubation were used to assess the effect EAflower plant extract on angiogenesis. Meanwhile, cell proliferation, soft agar, cell cycle, cell invasion and cell wounding assays were performed to explore the outcome of EA plant extract on FaDu and SCC25 oral cancer cell lines. On the other hand, western blot analysis was carried out to evaluate E-cadherin and Erk1/Erk2 expression and activation, respectively, in FaDu and SCC25 under the effect of EA extract. Results: Our data show that EA extract inhibits cell proliferation and colony formation, in addition to the initiation of Scell cycle arrest and reductionof G1/G2 phases. In parallel, EA extract provokes differentiation to an epithelial phenotype “mesenchymal-epithelial transition: MET” which is the opposite of “epithelial-mesenchymal transition, EMT”: an important event in cell invasion and metastasis. Thus, EA extract causes a dramatic decrease in cell motility and invasion abilities of FaDu and SCC25 cancer cells in comparison with their controls. These changes are accompanied by an up-regulation of E-cadherin expression. The molecular pathway analysis of the EA flower extract reveals that it can inhibit the phosphorylation of Erk1/Erk2, which could be behind the inhibition of angiogenesis, the initiation of MET event and the overexpression of E-cadherin. Conclusions: Our findings indicate that EA plant extract can downgrade human oral cancer progression by the inhibition of angiogenesis and cell invasion via Erk1/Erk2 signaling pathways.
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7

Carvalho, Braulio Fernandes de, and Gustavo Nogueira Barreto. "DESAFIOS AO USO SUSTENTÁVEL DA ARIE DA LAGOA DO PORTINHO, NO LITORAL DO PIAUÍ." In I Congresso Brasileiro de Especialidades Biológicas On-line. Revista Multidisciplinar de Educação e Meio Ambiente, 2021. http://dx.doi.org/10.51189/rema/2652.

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Introdução: A Lagoa do Portinho é uma Área de Relevante Interesse Ecológico (ARIE) criada pelo decreto estadual 18346 (08/07/2019), no território de Parnaíba e Luís Correia, ambos no litoral piauiense. É uma Unidade de Conservação de uso sustentável, com a finalidade de conservar ecossistemas naturais de restinga, dunas e lagoas. O local contava com complexo de bares, em sua maioria soterrado pelas dunas, e a lagoa ficou seca por anos. Com o retorno das águas, retornaram os turistas e visitantes. Objetivos: Identificar impactos negativos atuais do uso da ARIE da Lagoa do Portinho sobre o ambiente e a flora e a fauna nativas. Material e Métodos: fizeram-se visitas de campo e análise de imagens de satélite (Google Earth Pro), de janeiro a agosto de 2021. Resultados: Observou-se o tráfego de veículos motorizados na área das dunas, bem como a presença de animais herbívoros exóticos, soltos ou sob pastoreio, que dificultam a fixação de vegetação nativa sobre as dunas, área naturalmente hostil a maioria dos vegetais. A fixação prejudicada das dunas favorece o avanço acelerado destas sobre a pista, a lagoa e a vegetação de capoeira, onde se observam exemplares de diversas espécies, tais como: Jatobá-do-cerrado (Hymenaea sp.), Juazeiro (Ziziphus joazeiro), Catingueira (Cenostigma pyramidale), Cajueiro (Anacardium occidentale), Cagaita (Eugenia dysenterica) e Copaíba (Copaifera martii). Ademais o tráfego de veículos motorizados pode oferecer risco aos ninhos de aves que nidificam no chão, como Corujas-buraqueiras (Athene cunicularia) e Quero-queros (Vanellus chilensis), bem como as que se alimentam na margem, a exemplo da Garça-branca-pequena (Egretta thula) prejudicando ainda a prática de observação ornitológica. Conclusão: Para que o uso da ARIE seja sustentável de fato, é necessário planejamento para evitar danos à vida silvestre e a paisagem. Dessa forma, recomenda-se a demarcação de rotas fixas para veículos, como o feito nas dunas de Caucaia-CE. Além disso, deve-se cercar as áreas críticas, para evitar a herbivoria pelo gado, e o favorecimento da sucessão ecológica, resultando na fixação das dunas. Fazem-se necessários planejamento, investimento e fiscalização para manter conservada a ARIE da Lagoa do Portinho e garantir o desenvolvimento turístico a longo prazo.
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8

Carvalho, Braulio Fernandes de, Gustavo Nogueira Barreto, and Antônio Sérgio Farias Castro. "ÁRVORES NATIVAS RECOMENDADAS PARA COMPOSIÇÃO URBANA EM PARNAÍBA-PI." In I Congresso Brasileiro On-line de Estudos Ecológicos. Revista Multidisciplinar de Educação e Meio Ambiente, 2021. http://dx.doi.org/10.51189/rema/2696.

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Introdução: O município de Parnaíba-PI encontra-se em área ecotonal de Caatinga e Cerrado, sob influência pré-Amazônica e litorânea. Possui uma variedade geográfica com diversas fitofisionomias, como dunas, restingas, tabuleiros litorâneos inundáveis ou drenados, praias e manguezais. Apesar da rica biodiversidade, é comum encontrar árvores exóticas em detrimento de espécies nativas. Objetivos: Propor uma lista de palmeiras e árvores nativas adequadas para plantio em Parnaíba-PI. Material e métodos: Consultas à literatura, a bancos de dados eletrônicos (IPNI e REFLORA) e visitas de campo a ecossistemas diversos do Piauí e Ceará. Resultados: Xixá (Sterculia striata), Pau-d’arco-roxo (Handroanthus impetiginosus), Pau-d’arco-amarelo (Handroanthus ochraceus), Caraúba (Tabebuia aurea), Caroba (Jacaranda brasiliana), Tamboril (Enterolobium contortisiliquum), Sucupira-preta (Bowdichia virgilioides), Barriguda (Ceiba glaziovii), Angico (Anadenanthera colubrina), Fava-d’anta (Dimorphandra gardneriana), Tingui (Magonia pubescens), Cedro (Cedrela odorata), Cagaita (Eugenia dysenterica), Umburana-de-cambão (Commiphora leptophloeos), Umburana-de-cheiro (Amburana cearensis), Cajazeira (Spondias mombin),) Umbuzeiro (Spondias tuberosa), Sapucaia (Lecythis pisonis), Sapucaí (Lecythis lurida), Faveira (Parkia platycephala), Angico-branco (Albizia niopoides), Mororó (Bauhinia subclavata), Catingueira (Cenostigma pyramidale), Pitombeira (Talisia esculenta), Fígado-de-galinha (Martiodendron mediterraneum), Catingueiro (Chamaecrista eitenorum), Sambaíba (Curatella americana), Pau-marfim (Agonandra brasiliensis), Cajueiro (Anacardium occidentale), Oitizeiro (Moquilea tomentosa), Caneleiro (Cenostigma macrophyllum), Jenipapo (Genipa americana), Carnaúba (Copernicia prunifera), Coco-babão (Syagrus cearensis), Garampara (Dipteryx lacunifera), Macaúba (Acrocomia aculeata), Gameleira (Ficus pakkensis), Juazeiro (Sarcomphalus joazeiro), Janaguba (Himatanthus drasticus), Cauaçu (Coccoloba latifolia), Jatobá (Hymenaea courbaril), Miolo-roxo (Peltogyne confertiflora), Pau-d’óleo (Copaifera martii), Buritizeiro (Mauritia flexuosa), Trapiá (Crateva tapia), Torém (Cecropia palmata), Ingazeiro (Inga vera), Mangue-vermelho (Rhizophora mangle), Mangue-preto (Avicennia germinans), Mangue-de-botão (Conocarpus erectus), Tucum (Astrocaryum vulgare), Mangaba (Hancornia speciosa), Gonçalo-alves (Astronium fraxinifolium), Catanduva (Pityrocarpa moniliformis), Babaçu (Attalea speciosa), Maçaranduba (Manilkara cavalcantei), Jucá (Libidibia ferrea), Tatajuba (Maclura tinctoria), Pereiro (Aspidosperma pyrifolium), Puçá (Mouriri pusa) e Angelim (Andira fraxinifolia). Conclusão: Deve-se priorizar o uso de múltiplas espécies nativas, garantindo diversidade biológica e maximizando os serviços ambientais, como controle erosivo, aprisionamento de carbono, percolação de água pluvial, sombreamento, amortização de marés e produção de alimentos e de abrigos para fauna. Devem-se considerar as especificidades do local de plantio, de modo a incluir espécies adequadas às condições edáficas, e cujas características não interfiram na locomoção de veículos e pedestres, causem danos à rede elétrica ou destruam calçadas.
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Reports on the topic "Dysenterie"

1

Altonen, Brian. Asiatic cholera and dysentery on the Oregon Trail : a historical medical geography study. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.6189.

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