Dissertations / Theses on the topic 'Ascari'
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O'Hanlon, Graham Michael. "Developmental hormones in ascarid nematodes." Thesis, University of Liverpool, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293137.
Full textSimoneti, Marilza de Fátima. "Inativação térmica de ovos de helmintos em água e em biossólidos digeridos: cinética em reator batelada e modelagem matemática em reator tubular." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/3/3147/tde-22042007-225732/.
Full textBiological sludge can be a valuable resource for agricultural soil conditioning. However, an important obstacle for its use is the usual presence of pathogenic organisms, capable of disease dissemination. The main occurring pathogens are virus, bacteria, protozoa and helminth. Helminth eggs are very resistant to thermal inactivation. The Ascaris lumbricoids sp. are by far the most conspicuous and resistant among helminths, reason why they have been chosen as indicator organisms for this research. The main available systems to inactivate sludge pathogens are composting, drying and thermal treatment, anaerobic thermofilic digestion, beta and gamma radiation, and pasteurization. Pasteurization through application of saturated steam, produced from burning of methane gas, generated in anaerobic digestors is a very simple technology involving low capital costs and needing relatively small areas for implementation. It can be a valuable technology to attend conditions prevailing in large metropolitan areas of industrializing countries. Thermal inactivation of helminth eggs in water and sludge is the main purpose of this investigation. Kinetics studies of thermal inactivation by saturated steam was performed using batch reactors. Application of the integral method has allowed for the determination of reaction orders, the specific constants of thermal die away as well as the activation energies. The helminth eggs (Ascaris suum) utilized have been obtained from uterus of adult females and the Yanko method was utilized for the recovery of eggs from the digested sludge. In the same way the thermal inactivation of Ascaris eggs in water and in digested sludge has been performed in continuous process by mathematical modeling of a plug flow reactor. The proposed models were the isothermic plug flow reactor with a non-ideal flow profile and with an axial temperature profile and ideal flow. The experimental data has shown a better adjustment to the isothermic plug flow reactor.
Heath, A. Chris. "Structure and function relationships in a complex synthesizing glycogen de novo from Ascaris suum." Thesis, University of North Texas, 1989. https://digital.library.unt.edu/ark:/67531/metadc798120/.
Full textGruais-Legavre, Annick. "L'ascaris et ses traitements." Nantes, 1985. http://www.theses.fr/1985NANT328P.
Full textChao, Sheng-Hao. "Heat Shock Proteins in Ascaris suum." Thesis, University of North Texas, 1995. https://digital.library.unt.edu/ark:/67531/metadc279311/.
Full textBastos, Veridiana Karmann. "Detecção e quantificação de ovos viáveis de Ascaris sp e outros ovos de helmintos em lodo de esgoto." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/6/6134/tde-08032012-215510/.
Full textIntroduction: Sewage sludge from wastewater treatment plants (WWTP) presents a diverse composition and is a source of pollution depending on its origin, type of treatment and seasonality; moreover it can contain a large variety of pathogens including parasites. However, if this residue is submitted to an efficient treatment, it can be used as a fertilizer and soil conditioner. Some epidemiologic studies conducted in developed countries demonstrated a high incidence of enteroparasitosis, being Ascaris sp the most prevalent. Therefore, the use of sewage sludge in the agriculture can bring risks to the human health. In order to protect the population health, a recent Brazilian regulation, Rule CONAMA 375/2006, has established standards regarding its use in agricultural areas. Objective To detect and quantify Ascaris sp and other helminth eggs in sewage sludge from three wastewater treatment plants from a metropolitan region and also to verify the compliance with CONAMA standards. Method The analysis were carried out according to appendix F of CRF 503 USEPA 2003. Results All samples presented a rich parasitological fauna such as eggs of Ancylostoma sp, Ascaris sp, Capillaria sp, Enterobius vermicularis, Fasciola hepatica, Hymenolepis sp, Taenia sp, Toxocara sp and Trichuris sp. Non-viable Ascaris sp eggs were prevalent with 67.71 per cent , followed by Toxocara sp (13.62 per cent ).Viable Ascaris sp eggs were present in 10.16 per cent of the samples. Conclusion It was concluded that the sludge samples analyzed presented a large variety of helminth eggs, being Ascaris sp the most prevalent. None of the three WWTPs met CONAMA parasitological standards for class A sewage sludge
Nóbrega, Cassia Giselle de Oliveira. "ESTUDO DA ASSOCIAÇÃO ENTRE IgE E IgG1 ANTI-Ascaris E A PRESENÇA DE ASMA: AVALIAÇÃO DA RESPOSTA IMUNE CELULAR EM CRIANÇAS RESIDENTES NA REGIÃO METROPOLITANA DO RECIFE." Universidade Federal de Pernambuco, 2014. https://repositorio.ufpe.br/handle/123456789/11477.
Full textMade available in DSpace on 2015-03-09T14:18:41Z (GMT). No. of bitstreams: 2 DISSERTAÇÃO CASSIA GISELLE DE OLIVEIRA NÓBREGA.pdf: 1673463 bytes, checksum: 460066c3a78447d401976dede5d04300 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Previous issue date: 2014
A intensidade da resposta alérgica pode ser alterada em indivíduos sensibilizados por Ascaris lumbricoides, ou seja, com presença de anticorpos específicos no soro. Quanto à IgE anti-Asc, este anticorpo tem sido relatado como um fator de risco para asma, mas sobre a IgG1anti-Asc pouco é sabido. Este trabalho teve como objetivo verificar a associação entre IgE, IgG1 e IgG4 anti-Asc no soro e a presença de asma, bem como, entre asma e níveis de citocinas, valores absolutos de neutrófilos e eosinófilos, em pacientes com IgE ou IgG1 anti-Asc no soro. Para isto, crianças de 2 a 14 anos de idade, residentes na Região Metropolitana do Recife (n=104), asmáticas ou não asmáticos, sem infecção, tiveram as amostras de sangue coletadas. Foi realizado o leucograma e a cultura celular do sangue periférico. As células foram cultivadas, estimulados ou não com PHA, e os sobrenadantes submetidos à dosagem de citocinas por CBA. Os isótipos IgE, IgG1 e IgG4 anti-Asc, no soro, foram mensurados por ELISA. Foram formados 8 grupos de estudo: asma IgE anti-Asc positivo e negativo; controle (paciente não asmáticos) IgE anti-Asc positivo e negativo; asma IgG1 anti-Asc positivo e negativo; controle IgG1 anti-Asc positivo e negativo. Foi observado que não houve diferença na quantidade de indivíduos com IgE positivo e negativo entre os grupos asma e controle, bem como nos níveis deste anticorpo. O mesmo foi notado para a presença de IgG1 anti-Asc, porém com níveis mais elevados de anticorpo nos indivíduos controles. Não foram detectados níveis de IgG4 anti-Asc em pacientes asmáticos ou controles. Foram encontrados maiores níveis de IL-6, TNF-α e número de eosinófilos nos pacientes asmáticos em comparação aos controles. Este perfil se manteve nos pacientes asma IgE anti-Asc negativo, quando comparado aos controles negativo. Nos pacientes do grupo asma IgG1 anti-Asc positivo, foram observados maiores níveis de IL-6 e eosinófilos, em comparação aos do grupo controle positivo. No grupo asma IgG1 negativo houve maiores números de neutrófilos e eosinófilos, em comparação aos pacientes controle negativo. Os grupos asmáticos, independente da presença de IgE anti-Asc, apresentaram maior frequência de indivíduos com IL-10 e IFN-. Apenas os indivíduos do grupo asma IgG1 anti-Asc negativo apresentaram maior frequência de pacientes IL-10 e IFN-γ. Diante disso, o fato de ter asma favoreceu a produção de IL-6, TNF-α e eosinófilos, bem como IL-10 e IFN-γ, independente da presença da IgE anti-Asc. Contudo, em pacientes asmáticos a presença da IgG1 anti-Asc parece interferir melhorando a produção de IL-6, eosinófilos, mas não de IL-10 e IFN-γ.
Turner, Joseph. "Immune responses to Ascaris lumbricoides and Trichuris trichiura." Thesis, University of Nottingham, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408640.
Full textHewitt, Graham M. "Electrophysiological studies on the Ascaris muscle GABA receptor." Thesis, University of Southampton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.480608.
Full textSouza, Daniela Leles de. "Diagnóstico paleoparasitológico molecular de Ascaris lumbricoides (Linnaeus, 1758)." reponame:Repositório Institucional da FIOCRUZ, 2007. https://www.arca.fiocruz.br/handle/icict/5077.
Full textO parasito humano Ascaris lumbricoides tem distribuição cosmopolita sendo o mais prevalente dos helmintos intestinais. Estudos paleoparasitológicos por microscopia ótica revelaram também que é um dos mais encontrados em material antigo. No entanto são raros os achados desse parasito na América do Sul pré-colombiana. O objetivo desse estudo foi eselecer uma metodologia de diagnóstico paleoparasitológico molecular de A. lumbricoides que possa ser aplicado diretamente a ADN antigo extraído de coprólitos provenientes de sítios arqueológicos. Inicialmente a metodologia foi padronizada em amostras fecais atuais positivas para A. lumbricoides e/ou outros helmintos e ovos isolados a fim de testar a sensibilidade e especificidade dos métodos diagnósticos. (...) As metodologias utilizadas mostram-se aptas em recuperar ADN do parasito a partir dos coprólitos experimentais. Os resultados do RFLP e sequenciamento nucleotídico mostraram que o processo de dessecação artificial não afetou as seqüências nucleotídicas. No trabalho com material arqueológico, as estratégias como PCR reconstrutiva e reamplificação foram essenciais para as amplificações. O diagnóstico paleoparasitológico molecular identificou o parasito em 5 amostras procedentes de sítios arqueológicos sul americanos datados do período pré-colombiano que o exame por microscopia ótica não havia diagnosticado. Todas as 16 seqüências nucleotídicas de cit b obtidas revelaram o nucleotídeo característico da espécie A. lumbricoides, sendo que a maioria das seqüências difere das modernas, afastando a possibilidade de contaminação. Os resultados do diagnóstico paleoparasitológico molecular mostraram uma mudança na paleodistribuição do parasito na América do sul, onde este se estende desde o nordeste de Brasil até o norte do Chile, sendo o achado mais antigo datado de 8800 AP. Pela primeira vez é feito diagnostico molecular de A. lumbricoides diretamente de coprólitos.
Beckett, A. M. "Studies on the neuropeptidergic system of nematodes." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269161.
Full textSITAMZE, JEAN-MARIE. "Synthese d'antagonistes du gaba a proprietes ascaricides." Strasbourg 1, 1993. http://www.theses.fr/1993STR15071.
Full textWalker, Martin. "The population biology of Ascaris lumoricoides infections in humans." Thesis, Imperial College London, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.523751.
Full textCoates, Shana. "Modelling the population dynamics of Ascaris suum in pigs." Thesis, University of Warwick, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365228.
Full textPettitt, Jonathan. "Structure and expression of collagen genes in Ascaris suum." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240197.
Full textWilliamson, Sally. "Nicotinic acetylcholine receptors from the parasitic nematode Ascaris suum." Thesis, University of Bath, 2008. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501371.
Full textHannigan, Linda L. (Linda Lucile). "Purification and characterization of glycogen synthase from Ascaris suum." Thesis, North Texas State University, 1985. https://digital.library.unt.edu/ark:/67531/metadc798067/.
Full textBissoli, Elizangela de Alvarenga. "Saneamento ambiental e sua relação com a frequência de Ascaris Lumbricoides Lineu 1758, na população do município de Pindamonhangada-SP." Universidade de Taubaté, 2009. http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=151.
Full textThis study aim was to verify if the sanitation environmental evolution promoted the reduction of the prevalence Ascaris lumbricoides in the population of Pindamonhangaba town, also to raise the temporary and special distribution of the frequency parasite and identify areas of risks to the occurrence of the worn. Realizing these studies was applied the information from public municipal laboratory for the period of January 2004 up to December 2007, considering the following changeable, such as: gender, age, the place of living and the result of the parasitosis exam of each person. Data of environmental sanitation were from the obtained municipality and of Sabesp, for the period 1990 to 2008 and on the spot. Based on the organization by sectors of the municipality, was made a comparative analysis of the relationship between parasitological results and the developments of environmental sanitation. Among 52780 result of the parasitosis exam analyzed, 18,06% presented some parasitosis spicie, being the frequency of Ascaris lumbricoides 0,93% (minimum average of 0,14% and 1,85% maximum). There was an inverse relationship between the frequency of the parasite and age, regarding gender the prevalence was higher among men. Concluded that in Pindamonhangaba town- São Paulo some areas studied there was the diminish of the frequency of Ascaris lumbricoides, that coincided with the period of the establishment of the sanitation environmental. There are some areas located in the countryside and some in the town being areas of risks to the occurrence of A. lumbricoides, because of bad condition of sanitation and suitable environment to the development of the forms infecting.
Hindiyeh, Muna Yacoub. "Enumeration and survival studies on Helminth eggs in relation to treatment of anaerobic and aerobic sludges in Jordan." Thesis, University of Newcastle Upon Tyne, 1995. http://hdl.handle.net/10443/916.
Full textThorn, Peter. "An electrophysiological study of the somatic muscle cells of Ascaris suum." Thesis, University of Edinburgh, 1989. http://hdl.handle.net/1842/30027.
Full textCapizzi-Banas, Sandrine. "Oeuf d'ascaris Suum : Approches structurales et environnementales." Nancy 1, 2000. http://www.theses.fr/2000NAN12002.
Full textHolowiecki, Andrew. "Catalysis of mitochondrial NADH:NAD+ transhydrogenation in adult Ascaris suum (nematoda)." Bowling Green, Ohio : Bowling Green State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=bgsu1256953439.
Full textMartin, Rex E. (Rex Edward). "Localization of serotonin (5-hydroxytryptamine, 5-HT) with partial purification and characterization of a serotonin binding protein in the intestinal tissue of the nematode Ascaris suum." Thesis, University of North Texas, 1989. https://digital.library.unt.edu/ark:/67531/metadc798477/.
Full textCurrie, Rachel MacLeod. "Immunoepidemiology of Trichuris trichiura T. muris and Ascaris lumbricoides infections." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299976.
Full textChehayeb, James. "Proteomic analysis of «Ascaris suum» fluid compartments and secretory products." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=123155.
Full textAscaris lumbricoides infecte au moins 10% de la population mondiale et est une problématique de santé publique dans les pays en voie de développement. La survie de ce parasite dans son hôte est médiée d'une part par des substances exportées à son hôte par voies de secrétions. Bien que peu d'informations soient connues sur la composition de ces substances, définir leur contenu ainsi que leurs fonctions pourraient aider à clarifier la relation entre le parasite et son hôte. Ascaris suum est un parasite du porc utilisé comme organisme-modèle en raison de son génome séquencé et de sa similarité morphologique avec le parasite de l'homme, A. lumbricoides. Les produits de secrétions/excrétions (PSE), le fluide perientérique (FPE) et le fluide utérin (FU) ont été obtenus des femelles adultes d'A. suum. Les protéines contenues dans ces fluides ont été isolées et soumises à LC-MS/MS et ont ensuite été soumises à des analyses bioinformatiques. Une fraction de PSE inclut plusieurs protéines qui se trouvent aussi dans FU. Les protéines trouvées dans les PSE, mais absentes du FU, avaient une composition catégorique différente comparée aux FPE et au FU, lesquels montraient une composition similaire. Nous concluons par ces résultats que les protéines exportées par l'appareil de sécrétion ont des motifs distincts en termes de fonctions biologiques et que les protéines du FU sont dérivées du FPE. De plus, le PSE d' A. suum a été comparé au PSE de Brugia malayi et au PSE de Heligmosomoides polygyrus. Nous avons conclu que le secretome d' A. suum est conservé à la fois par phylogénie et l'emplacement de l'infection dans l'hôte.
Payne, Marvin A. "Desensitized Phosphofructokinase from Ascaris suum: A Study in Noncooperative Allostery." Thesis, University of North Texas, 1993. https://digital.library.unt.edu/ark:/67531/metadc279174/.
Full textFerreira, Sebastião Rodrigo. "Atividade ovicida do fungo Pochonia chlamydosporia sobre ovos de Ascaris suum e atividade predatória de fungos nematófagos sobre formas infectantes de Oesophagostomum spp." Universidade Federal de Viçosa, 2011. http://locus.ufv.br/handle/123456789/5071.
Full textSwine meat is one of main sources of animal protein consumed in the world and strong demand for swine meat in the Asian continent has stimulated the development of the internal market, however, has been demanded a production system aimed at animal welfare and organic production. Even though, in given situations intestinal parasites remain a problem for breeding these animals, especially when this is done through the extensive management system. Among these, stands out the parasitic nematodes, Ascaris suum and Oesophagostomum spp, whose infective forms are present in the environment. By the way, the objectives of this study were to evaluate the ovicidal activity of fungus Pochonia chlamydosporia on A. suum eggs and predatory activity of the Duddingtonia flagrans, Monacrosporium sinense and Artrhobotrys robusta on infective forms of Oesophagostomum spp. For this purpose, four experimental trials were set up, where it was evaluated (in vitro) activity of these fungi on the infectious forms of these nematodes and (in vivo) test which evaluated the ability of P. chlamydosporia and D. flagrans to support the passage through the gastrointestinal tract of pigs. Isolates fungal of P. chlamydosporia were able to destroy A. suum eggs in vitro and capable of supporting the passage through the gastrointestinal tract of pigs without losing its capacity to destroy eggs. D. flagrans, M. sinense and A. robusta predated Oesophagostomum spp L3 in vitro. D. flagrans kept its predatory ability after passing through the gastrointestinal tract of pigs. Results presented in this study suggest that the fungi P. chlamydosporia and D. flagrans can be used to assist in the control of infectious forms of the nematodes A. suum and Oesophagostomum spp, respectively.
A carne suína é uma das principais fontes de proteína animal consumida no mundo e a forte demanda por carne suína no continente Asiático tem estimulado o desenvolvimento do mercado interno, entretanto, têm se exigido um sistema de produção que vise o bem estar animal e a produção orgânica. Contudo, em dadas situações as parasitoses intestinais continuam a ser um problema para criação destes animais, principalmente quando essa se faz pelo sistema de manejo extensivo. Entre estas parasitoses destacam-se os nematoides, Ascaris suum e Oesophagostomum spp, cujas formas infePigsctantes encontram-se no ambiente. Dessa forma, os objetivos do presente trabalho foram: avaliar a atividade ovicida do fungo Pochonia chlamydosporia sobre ovos de A. suum e atividade predatória do fungo Duddingtonia flagrans, Monacrosporium sinense e Artrhobotrys robusta sobre formas infectantes e Oesophagostomum spp. Para isso, foram montados quatro ensaios, onde foi avaliada a atividade in vitro dos referidos fungos sobre as formas infectantes destes nematoides e um teste in vivo onde se avaliou a capacidade de P. chlamydosporia e D. flagrans suportar a passagem pelo trato gastrointestinal de suínos. Isolados fúngicos de P. chlamydosporia destruíram ovos de A. suum no teste in vitro e foram capazes de suportar a passagem pelo trato gastrointestinal de suínos sem perder sua capacidade de destruição de ovos. D. flagrans, M. sinense e A. robusta predaram as larvas l3 de Oesophagostomum spp. nos testes in vitro. D. flagrans manteve esta habilidade após a passagem pelo aparelho gastrointestinal dos suínos. Os resultados apresentados no presente trabalho sugerem que os fungos Pochonia chlamydosporia e Duddingtonia flagrans podem ser utilizados para auxiliar no controle das formas infectantes dos nematoides Ascaris suum e Oesophagostomum spp, respectivamente.
Leite, Ana Karine Rocha de Melo. "Efeito protetor dos extratos de Ascaris suum e Coccidioides posadasii e da lectina da semente de Dioclea violacea na artrite por zymosan em ratos e camundongos." reponame:Repositório Institucional da UFC, 2009. http://www.repositorio.ufc.br/handle/riufc/847.
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The interactions between innate and acquired immune responses participate in the pathophysiology of the autoimmune diseases. Though infections are associate with the development of the chronic arthritis it is possible that exposure to some germs as helminthes and fungi influences potentially the prevalence and/or gravity of the immune diseases. Lectins derivate of the plants can modulate the inflammation by action in receptors of the innate response. We investigated the effect of extracts from Ascaris suum (AS), Coccidioides posadasii (CS) and a lectin isolated from Dioclea violacea (Dviol) in zymosan-induced arthritis (ZyA). Wistar rats and Swiss mice received 1 mg or 0.1 mg zymosan intra-articular (i.art.), respectively. Groups were pretreated (30 min) with AS (0.25 - 2.5 mg/animal; i.p. or p.o.) CP (1 - 100 µg/animal; i.art. i.p. or p.o) or Dviol (0.3 - 30 µg; i.art. or 1 - 6 mg/kg; i.v.). Non-treated group (NT) received Zy (i.art.) and the vehicle. Naive animals received just saline (i.art.) and the vehicle. The hypernociception was evaluated through articular incapacitation test in s/1min. The joint exudate was used for evaluation of cell influx (CI), nitrite and cytokine levels. The synovium was used for histopatology. The glycosaminoglycan (GAG) content of the cartilage was quantificated for the measured of the structural damage. The AS extract both i.p. and p.o. significantly and dose-dependently inhibited CI and hypernociception in ZyA as compared to NT (P<0.01) as well as reverted articular damage assessed by quantification of the GAG and by synovitis observed in the histology. The administration of the AS extract reduced significantly levels of nitrite, interleukin-1β (IL-1β) and IL-10, but not tumor necrosis factor alpha (TNF-α) as compared to NT. In mice, it reduced IL-10 but not IL-1β and TNF- α. The treatment with CP extract both i.p. and p.o. inhibited hypernociception and CI in ZyA as compared to NT, but not reverted articular injury measured by GAG and histology. The administration of the Dviol in naïve animals promoted CI significant, though just the highest dose (30 g) promoted hypernociception. In ZyA, Dviol (i.art.) reduced the CI and hypernociception dose-dependently (P<0.01). The administration of Dviol (i.v.) significantly reduced both the hyperalgesia and CI in ZyA as compared to NT (P<0.01). The effect of the Dviol was reverted when it was pre-incubated with mannose (1M). The date show that AS extract promote functional improve and protect of the articular damage in ZyA that are associate with reduction of the NO and cytokine (i.art.) liberation. This effect is species independent and functions orally. An extract of the fungi CP has anti-inflammatory activity in ZyA. A lectin isolated of the Dviol reduces CI and hypernociception in ZyA probably by coupling the mannose receptor. Together the results show that substances that act in receptors of the innate response modulate the immunomediate articular inflammation.
Interações entre a resposta imune inata e adquirida participam na fisiopatologia de doenças auto-imunes. Embora infecções estejam associadas ao desenvolvimento de artrites crônicas, é possível que exposição a alguns germes, como helmintos e fungos, potencialmente influencie a prevalência e/ou gravidade de doenças imunomediadas. Lectinas derivadas de plantas, por ação em receptores de resposta inata, podem modular inflamação. Nós investigamos o efeito dos extratos de Ascaris suum (AS) e de Coccidioides posadasii (CP) e de uma lectina isolada da Dioclea violacea (Dviol) na artrite induzida por zymosan (AZy). Ratos Wistar e camundongos Swiss receberam 1 mg ou 0,1 mg de zymosan intra-articular (i.art.), respectivamente. Grupos foram pré-tratados (30 min) com os extratos de AS (0,25 - 2,5 mg/animal; i.p ou p.o.), CP (1 - 100 µg/animal; i.art., i.p. ou p.o.) ou Dviol (0,3 - 30 µg i.art. ou 1 - 6 mg/Kg e.v.). Grupo não-tratado (NT) recebeu Zy (i.art.) e veículo. Animais naive receberam apenas salina (i.art.) e veículo. A hipernocicepção foi avaliada através do teste de incapacitação articular em s / 1min. O lavado articular foi usado para análise do influxo celular (IC), níveis de nitrito e citocinas. A sinóvia foi utilizada para histopatologia. O conteúdo de glicosaminoglicanos (GAG) da cartilagem foi quantificado para medir dano estrutural. O extrato de AS, seja i.p. ou p.o., inibiu de forma dose-dependente a hipernocicepção e o IC na AZy em relação ao grupo NT (P<0,01), bem como reverteu o dano articular avaliado pela quantificação de GAG e a sinovite vista à histologia. A administração do extrato de AS, reduziu significantemente os níveis de nitrito, inteleucina-1β (IL-1β) e IL-10, mas não de fator de necrose tumoral alfa (TNF-α), em relação ao NT. Em camundongos, o extrato de AS reduziu os níveis de IL-10, mas não de IL-1β ou TNF-α. O tratamento com o extrato de CP, seja i.p. ou p.o., inibiu significantemente a hipernocicepção e o IC na AZy, em relação ao NT, no entanto, não reverteu a lesão articular medida pela quantidade de GAG e histologia. A administração da Dviol, em animais naive promoveu IC significante, embora apenas a maior dose (30µg) promoveu hipernocicepção. Na AZy, a injeção i.art. da Dviol reduziu o IC e hipernocicepção de forma dose-dependente, em relação ao NT (P<0,01). A administração da Dviol (i.v.) reduziu ambos hipernocicepção e IC na AZy, em relação ao NT (P<0,01). O efeito da Dviol foi revertido quando essa lectina foi pré-incubada com manose 1 M. Os dados mostram que um extrato de AS promove melhora funcional e protege do dano estrutural na AZy, que são associados com redução na liberação de NO e citocinas i.art. Esse efeito independe da espécie e ocorre por via oral. Um extrato do fungo CP tem ação anti-inflamatória na AZy. Uma lectina isolada da Dviol reduz IC e hipernocicepção na AZy, provavelmente por acoplamento a um receptor de manose. Em conjunto, os resultados mostram que substâncias que agem em receptores de resposta inata modulam a inflamação articular imunomediada.
Araújo, Claudia Andréa Alves de. "Estudos da imunomodulação induzida por PAS-1 (proteína imunossupressora de Ascaris suum) na inflamação alérgica pulmonar." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/42/42133/tde-18102007-103406/.
Full textIn this work, we investigate the immune response mechanisms triggered by PAS-1 to promote its immunomodulatory effect in the lung allergic inflammation. For that, wild type, IL-12-/-, IFN-g-/- and IL-10-/- C57BL/6 mice were immunized and challenged with OVA or PAS-1 or OVA + PAS-1. Moreover, wild type C57BL/6 mice were adoptively transferred with PAS-1-primed CD19+, B220+, CD3+, CD4+, CD8+, CD4+CD25-, and CD4+CD25+ lymphocytes. Our results demonstrated that the immunomodulatory effect induced by PAS-1 is mediated by IFN-g and IL-10, but not by IL-12, and only mice which received CD8+ or CD4+CD25+ T cells did not present lung allergic inflammation and produced IFN-g and IL-10/TGF-ß, respectively. Taken together, these results demonstrated that the imunomodulatory effect induced by PAS-1 is due to stimulating CD8+ T cells, which secrete IFN-g, and CD4+CD25+ T cells, which secrete IL-10 and TGF-ß.
Silva, Aldacilene Souza da. "Anticorpos anafiláticos induzidos por componentes de alto peso molecular de Ascaris suum: regulação da resposta primária e secundária por citocinas." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/42/42133/tde-19092018-110326/.
Full textPrevious studies have shown a suppressive effect of Ascaris suum extract (Asc) on humoral and cell-mediated immune responses to a non-related antigen. After fractionation of this extract by gel filtration, two peaks were identified according to their molecular weights, and the suppressive effect was associated with proteins of high molecular weight (PI). PI induces high levels of non-anaphylactic lgG1 and low levels of lgE and anaphylactic lgG1. Since these results were obtained 8 days after immunization, the aim of this work was to follow the production of anti-PI anaphylactic antibodies during the primary as well as the secondary antibody response. We algo studied the modulation of the anaphylactic antibody production by cytokines. Pl-specific anaphylactic lgG1 was produced lately in the primary response and was partially dependent on IL-4, including the secondary response. lgE was not produced in the absence of IL-4 at any time. IL-12 and IFN- γ exerted a slight negative effect on Pl-specific anaphylactic lgG1 and lgE antibody production in the beginning of the primary response. In contrast, IL-10 together with IFN- γ had a profound inhibitory efíect on the synthesis of these antibodies in the primary and secondary responde. The production of Pl-specific non-anaphylactic lgG1 antibodies depended upon IFN- γ only in the prímary response.
Paterson, Jacqueline C. M. "Modulation of T cell responses by the products of Ascaris suum." Thesis, University of Glasgow, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312783.
Full textBrooman, Julie Elizabeth. "The characterisation of serotonin receptors in the parasitic nematode Ascaris suum." Thesis, University of Southampton, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242710.
Full textParri, Harri Rheinallt. "Studies on chloride in the muscle bag cells of Ascaris suum." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238844.
Full textDuittoz, Anne Helene. "Pharmacology of GABA receptors in Ascaris suum muscle : an electrophysiological study." Thesis, University of Edinburgh, 1991. http://hdl.handle.net/1842/29738.
Full textTian, Li, and 田莉. "Structural analysis of thymidylate synthase in nematodes: ascaris suum & caenorhabditis elegans." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31237757.
Full textNdong, Biyo'o Mesmin. "Place des antigènes d'ascaris lumbricoïdes dans le diagnostic des filarioses humaines." Tours, 1997. http://www.theses.fr/1997TOUR3806.
Full textHolowiecki, Andrew. "Catalysis of Mitochondrial NADH→NAD+ Transhydrogenation in Adult Ascaris suum (Nematoda)." Bowling Green State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1256953439.
Full textHsu, Shing-Chien. "The bacterial flora of the intestine of Ascaris suum and serotonin production." Thesis, North Texas State University, 1986. https://digital.library.unt.edu/ark:/67531/metadc798353/.
Full textTian, Li. "Structural analysis of thymidylate synthase in nematodes : ascaris suum & caenorhabditis elegans /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20007413.
Full textBuxton, Samuel. "Parasitic nematode ion channels : improving understanding of pharmacology and genetic composition." Thesis, Tours, 2012. http://www.theses.fr/2012TOUR4047/document.
Full textParasitic nematode infections of humans, plants and animals are of major economic impact. Anthelmintics are the main chemotherapeutic agents used for treatment and prophylaxis of nematode infections because there is presently no effective vaccine on the market. However, resistance has been reported to the mainstay anthelmintics. There is therefore the urgent need to understand the genetics of the receptors targeted by these anthelmintics and to find alternative targets for developing new anthelmintics. We have demonstrated the effects of the new novelacting cyclooctadepsipeptide anthelmintic, emodepside, on the membrane potential and voltageactivated currents in the pig parasite Ascaris suum. Finally, we show the cloning of four acetylcholine receptor subunit genes from another pig parasite, Oesophagostomum dentatum and the expression and characterization of four levamisole receptor subtypes in Xenopus laevis oocytes
Gobbi, Sidinei Antonio. "Remoção de ovos de helmintos de esgotos secundários, por meio de filtros rápidos de areia, carvão antracitoso e zeólito para reúso agrícola e urbano não potável." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/3/3147/tde-11082010-104518/.
Full textHelminth eggs are one of the major problems regarding the reuse of treated sewage in agriculture and non-potable urban irrigation since both workers who handle the effluent and the consumer population might become contaminated. Helminth eggs are not efficiently removed by conventional unit operations and processes, which do not allow the removal of helminth eggs at levels established by the World Health Organization guidelines. The objective of this research is to assess the gravity filtration as an additional unit of treatment for the removal of helminth eggs. Since local effluent sewage treatment stations have highly variable concentrations of helminth eggs, a synthetic solution of standardized Ascaris suum was used. The synthetic solution prepared with standardized eggs was used to determine the operating parameters of the filtration process. Following the trials, pilot scale tests with treated sewage were conducted aimed at evaluating the influence of organic materials, solids, among other materials which might interfere in the process. Experiments with synthetic solution were performed in the laboratory of the International Center of Water Reuse - CIRRA, at the Polytechnic School of the University of São Paulo. Experiments with treated sewage were performed at ETE - ABC, SABESP. The results showed that the three filtration columns were very efficient in removing helminth eggs, which resulted in an effluent with a final concentration of < 1 egg/L. In addition, the filtration allowed the removal of total suspended solids, turbidity, color, and particulate organic material, resulting in an effluent with great potential to be reused in irrigation as well as in non-potable urban reuse.
Martin, Rex E. (Rex Edward). "Neuroregulation and Myosin Light Chain Phosphorylation in Ascaris Suum Obliquely Striated Skeletal Muscle." Thesis, North Texas State University, 1985. https://digital.library.unt.edu/ark:/67531/metadc504635/.
Full textPayne, Leslie G. "Vitamin A supplementation reduces reinfection with Ascaris in indigenous Panamanian preschool children." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=98764.
Full textElkins, David Brian. "The epidemiology and control of Ascaris lumbricoides in an Indian fishing community." Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/38297.
Full textPalhas, Priscila Botelho. "IgE para ácaros, barata e Ascaris lumbricoides: impacto na IgE total e implicações para o desenvolvimento de alergia e asma." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/17/17138/tde-19072018-095431/.
Full textImmunoglobulin E (IgE) plays a central role in the pathogenesis of allergic diseases. It is part of the type 2 response, and the cytokines IL-4 and IL-13 are essential for the production of this immunoglobulin isotype. IgE production is also induced by intestinal parasites, particularly helminths. The aim of the present study was to evaluate the contribution of specific IgE to mites, cockroach, cat, dog and parasite Ascaris lumbricoides on total IgE levels among children living in different areas in Brazil. IgE antibodies to mites Dermatophagoides pteronyssinus and Blomia tropicalis; cockroach Blattella germanica; cat; dog; and A. lumbricoides were measured using the ImmunoCAP system and compared to total serum IgE of 150 children 3-6 year-old living in the city of Natal, endemic for intestinal parasites, and 54 children 3-6 years of age with asthma and /or rhinitis, living in Ribeirão Preto. Total IgE levels were significantly higher in children from Natal as compared to those among children in Ribeirão Preto (geometric mean 630,9 kU/L, range 19,6-63.290 kU/L; e 398,1 kU/L, range 35,7-4.803 kU/L, respectively). Among the 150 children from Natal, 52(34.6%) presented IgE positive to D.pteronyssinus; 70(46.6%) to B. tropicalis; 45(30%) to cockroach; 19 (12.6%) to cat; 17(11.3%) to dog; and 125(83.3%) to A. lumbricoides. Among the 54 children with asthma and /or rhinitis from Ribeirão Preto, 41(75.9%) had IgE positive to D.pteronyssinus; 34(62.9%) to B.tropicalis; 22(40.7%) to cockroach; 11(20.3%) to cat; 12(22.2%) to dog. Although these children were negative for parasites at inclusion in the study, 22(40.7%) had IgE to A.lumbricoides. IgE antibodies to A.lumbricoides were higher among children from Natal, as compared to IgE to inhalant allergens (p<0.01). IgE levels to D.pteronyssinus among children living in Ribeirão Preto were higher than IgE to other inhalants and A.lumbricoides (p<0.01). In Natal, the percentage of IgE to A.lumbricoides in relation to total IgE was higher in comparison to IgE to D.pteronyssinus e B.germanica (median 0.41%, 0.08%, and 0.04% respectively, p<0.01). In Ribeirão Preto, the percentage of IgE to D.pteronyssinus and to B.tropicalis in relation to total IgE was higher in comparison to IgE to A.lumbricoides and cockroach (median 9.8%, 0,6%, 0.3%, and 0.2%, respectively, p <0.05). Linear regression analysis revealed that the strongest association was for IgE to A.lumbricoides with total IgE in Natal (R²=0.56, p<0.01); significantassociation was also observed for IgE to mites with total IgE in Ribeirão Preto (R2=0.35, p<0.01 for D. pteronyssinus, R2=0.33, p<0.01 for B.tropicalis, respectively). Our results demonstrated that IgE antibodies to mites contribute strongly to total IgE among children with asthma and /or rhinitis, living in an area of low parasite infection rates in our country. On the contrary, among children living in an area where parasites are found in abundance, parasitic infections induce a strong polyclonal IgE response, and IgE antibodies specific for parasite, and also for mites, cockroaches, cat and dog represent a modest proportion of total IgE. The specificity of these IgE antibodies and the implications of this response occurring early in life remain unknown.
Franks, Christopher John. "Studies on the actions of the nematode FMRFamide like neuropeptide PF1." Thesis, University of Southampton, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243920.
Full textStien, Jean-Louis. "Oeufs d'helminthes et environnement : le modèle d'oeufs d'ascaris." Metz, 1989. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1989/Stien.Jean_Louis.SMZ893.pdf.
Full textViana, Fernando André Campos. "Estudo comparativo, randomizado para avaliar a eficácia terapêutica da piperazina hexahidratada com extrato fluido de rhamnus purshiana no tratamento da ascaridíase." reponame:Repositório Institucional da UFC, 2007. http://www.repositorio.ufc.br/handle/riufc/2356.
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The efficacy and the therapeutic security of a manufactured piperazina associated with the extract fluid of Rhamnus purshiana (DM Indústria Farmacêutica) used for deworming patients in Ceará, Brazil, were tested against the product composed by piperazina without any association (DM Indústria Farmacêutica). A prospective, randomized, controlled and double blind clinical trial, comparing cure rates for Ascaris lumbricoides infections. Stool samples from 990 volunteers were collected at baseline and the prevalence of intestinal parasitic infections were viewed. 130 patients with faecal sample positive for Ascaris lumbricoides were included on the clinical trial, to assess the efficacy and therapeutic security. Socio-economic and sanitation information was obtained by an oral questionnaire. More than half of the patient showed monoparasitism (60%) and prevalence of Ascaris lumbricoides was (29%) in the study population. Intestinal helminth and protozoon infections egg positive rate was 48.38% (trichuriasis 4%, ancylostomiasis 0%, amebiasis 04%, giardiasis 10%). Cure rate for piperazine associated with the extract fluid of Rhamnus purshiana was 93.33% and piperazine without any association was 96.36%, so there was no significant difference in the cure rates (P = 0.6809). The most prevalent side effects were nausea 13.84% and vomit 11.53%. There was no significant difference in the prevalence of side effects (P = 0.2348). Socio-economic and sanitation dates showed narrow relation with Ascaris lumbricoides. Piperazine associated with the extract fluid of Rhamnus purshiana was efficient and insurance in the treatment of Ascaris lumbricoides in the studied population.
A eficácia e a segurança terapêutica de um medicamento a base de piperazina hexahidratada associada com o extrato fluido de Rhamnus purshiana (DM Indústria Farmacêutica) usada como tratamento anti-helmíntico em pacientes no Ceará, Brasil, foi testado em comparação com o produto composto de piperazina sem qualquer associação (DM Indústria Farmacêutica). Um estudo prospectivo, randomizado, controlado e duplo cego, comparando taxas de cura para infecção por Ascaris lunbricoides. Amostras coprológicas de 990 pacientes foram coletadas inicialmente e a prevalência de infecções parasitárias intestinais foi examinada. 130 pacientes com amostras fecais positivas para Ascaris lumbricoides foram incluídos nos ensaios clínicos, no intuito de ser comprovada a eficácia e a segurança terapêutica. Informações sobre dados socioeconômicos e de saneamento foram coletas a partir de questionário próprio. Mais da metade dos pacientes mostrou taxa de monoparasitismo (60%) e prevalência de Ascaris lumbricoides de 29%. Taxa positiva para helmintíase intestinal e infecções por protozoários atingiram índice de 48,38% (tricuríase 04%, ancilostomíase 0%, amebíase 04%, giardíase 10%). Taxa de cura da piperazina associada com extrato fluido de Rhamnus purshiana foi de 93,33% e para a piperazina sem associações foi de 96,36%, portanto não apresentou diferença estatisticamente significante em relação às taxas de cura dos medicamentos em estudo (P = 0,6809). Náusea (13,84%) e vômito (11,53%) foram os eventos adversos mais prevalentes. Não foi evidenciada diferença estatisticamente significante em relação à ocorrência de eventos adversos nas duas formulações (P = 0,2348). Dados socioeconômicos e de saneamento mostraram íntima relação com a ocorrência infecção por Ascaris lumbricoides. Piperazina associada com extrato fluido com Rhamnus purshiana mostrou-se eficaz e segura no tratamento da ascaridíase, na população estudada.
Viana, Fernando Andrà Campos. "Estudo comparativo, randomizado para avaliar a eficÃcia terapÃutica da piperazina hexahidratada com extrato fluido de rhamnus purshiana no tratamento da ascaridÃase." Universidade Federal do CearÃ, 2007. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=646.
Full textA eficÃcia e a seguranÃa terapÃutica de um medicamento a base de piperazina hexahidratada associada com o extrato fluido de Rhamnus purshiana (DM IndÃstria FarmacÃutica) usada como tratamento anti-helmÃntico em pacientes no CearÃ, Brasil, foi testado em comparaÃÃo com o produto composto de piperazina sem qualquer associaÃÃo (DM IndÃstria FarmacÃutica). Um estudo prospectivo, randomizado, controlado e duplo cego, comparando taxas de cura para infecÃÃo por Ascaris lunbricoides. Amostras coprolÃgicas de 990 pacientes foram coletadas inicialmente e a prevalÃncia de infecÃÃes parasitÃrias intestinais foi examinada. 130 pacientes com amostras fecais positivas para Ascaris lumbricoides foram incluÃdos nos ensaios clÃnicos, no intuito de ser comprovada a eficÃcia e a seguranÃa terapÃutica. InformaÃÃes sobre dados socioeconÃmicos e de saneamento foram coletas a partir de questionÃrio prÃprio. Mais da metade dos pacientes mostrou taxa de monoparasitismo (60%) e prevalÃncia de Ascaris lumbricoides de 29%. Taxa positiva para helmintÃase intestinal e infecÃÃes por protozoÃrios atingiram Ãndice de 48,38% (tricurÃase 04%, ancilostomÃase 0%, amebÃase 04%, giardÃase 10%). Taxa de cura da piperazina associada com extrato fluido de Rhamnus purshiana foi de 93,33% e para a piperazina sem associaÃÃes foi de 96,36%, portanto nÃo apresentou diferenÃa estatisticamente significante em relaÃÃo Ãs taxas de cura dos medicamentos em estudo (P = 0,6809). NÃusea (13,84%) e vÃmito (11,53%) foram os eventos adversos mais prevalentes. NÃo foi evidenciada diferenÃa estatisticamente significante em relaÃÃo à ocorrÃncia de eventos adversos nas duas formulaÃÃes (P = 0,2348). Dados socioeconÃmicos e de saneamento mostraram Ãntima relaÃÃo com a ocorrÃncia infecÃÃo por Ascaris lumbricoides. Piperazina associada com extrato fluido com Rhamnus purshiana mostrou-se eficaz e segura no tratamento da ascaridÃase, na populaÃÃo estudada
The efficacy and the therapeutic security of a manufactured piperazina associated with the extract fluid of Rhamnus purshiana (DM IndÃstria FarmacÃutica) used for deworming patients in CearÃ, Brazil, were tested against the product composed by piperazina without any association (DM IndÃstria FarmacÃutica). A prospective, randomized, controlled and double blind clinical trial, comparing cure rates for Ascaris lumbricoides infections. Stool samples from 990 volunteers were collected at baseline and the prevalence of intestinal parasitic infections were viewed. 130 patients with faecal sample positive for Ascaris lumbricoides were included on the clinical trial, to assess the efficacy and therapeutic security. Socio-economic and sanitation information was obtained by an oral questionnaire. More than half of the patient showed monoparasitism (60%) and prevalence of Ascaris lumbricoides was (29%) in the study population. Intestinal helminth and protozoon infections egg positive rate was 48.38% (trichuriasis 4%, ancylostomiasis 0%, amebiasis 04%, giardiasis 10%). Cure rate for piperazine associated with the extract fluid of Rhamnus purshiana was 93.33% and piperazine without any association was 96.36%, so there was no significant difference in the cure rates (P = 0.6809). The most prevalent side effects were nausea 13.84% and vomit 11.53%. There was no significant difference in the prevalence of side effects (P = 0.2348). Socio-economic and sanitation dates showed narrow relation with Ascaris lumbricoides. Piperazine associated with the extract fluid of Rhamnus purshiana was efficient and insurance in the treatment of Ascaris lumbricoides in the studied population
McDermott, Lindsay Claire. "Structural and functional analysis of the ABA-1 allergen of the nematode Ascaris." Thesis, University of Glasgow, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301363.
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