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Dissertations / Theses on the topic 'Antiviral plants'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Ho, Thien Xuan. "Antiviral gene silencing in plants." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509958.

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2

Kerr, Conor Gerard. "Investigation of antiviral activities of traditional Chinese medicinal plants." Thesis, Queen's University Belfast, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.602553.

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For thousands of years the practice of traditional medicine has been effective in the treatment of various infections using the plants and herbs that have been found and used locally with little or no adverse effects reported . One such documented system is that of traditional Chinese medicine (TCM) which is underlain by an artistic philosophy and supported by a wealth of anecdotal evidence of curative effect on human ailments. Many traditional medicinal plants have now been subjected to scientific based antiviral studies with their antiviral action being evaluated against both human and anima

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3

Ciomperlik, Jessica J. "Anti-viral RNAi and its suppression in plants." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2008-08-37.

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4

Sakamoto, Tetsu. "The tomato RLK superfamily: phylogeny and functional predictions about the role of the LRRII- RLK subfamily in antiviral defense." Universidade Federal de Viçosa, 2012. http://locus.ufv.br/handle/123456789/4804.

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Made available in DSpace on 2015-03-26T13:42:33Z (GMT). No. of bitstreams: 1 texto completo.pdf: 7011501 bytes, checksum: 91e769b2bb42693898b81b66b463f1e3 (MD5) Previous issue date: 2012-08-03<br>Fundação de Amparo a Pesquisa do Estado de Minas Gerais<br>Receptores cinases (RLKs) compõem uma grande famíla de proteínas transmembrânicas que possuem funções importantes na propagação e percepção de sinais celulares nas plantas. Em Arabidopsis thaliana, a superfamília de RLK é composta de mais de 600 membros e vários destes, principalmente aqueles que possuem repetições ricas em leucina (LRR), sã

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5

Ku, Chuen Fai. "Arylnapthalene liguans from justicia plants as potent broad-spectrum antiviral agents." HKBU Institutional Repository, 2020. https://repository.hkbu.edu.hk/etd_oa/779.

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Background: The emergence of viral diseases has been the major threat to public health and social stability. A hundred years ago, 1918 Spanish flu (H1N1) pandemic spread worldwide, and about 3% ~ 5% of the world's population died from the flu-related illnesses. It is known as the deadliest catastrophic pandemics in human history. There have been five Public Health Emergency of International Concern (PHEIC) declarations over the past decade, including the 2014 Ebola outbreak in west Africa, the 2016 Zika outbreak and the ongoing COVID-19 pandemic. There is always a new strain of virus emerging

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6

Ku, Chuen Fai. "Arylnaphthalene lignans from justicia plants as potent broad-spectrum antiviral agents." HKBU Institutional Repository, 2020. https://repository.hkbu.edu.hk/etd_oa/836.

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Background: The emergence of viral diseases has been the major threat to public health and social stability. A hundred years ago, 1918 Spanish flu (H1N1) pandemic spread worldwide, and about 3% ~ 5% of the world's population died from the flu-related illnesses. It is known as the deadliest catastrophic pandemics in human history. There have been five Public Health Emergency of International Concern (PHEIC) declarations over the past decade, including the 2014 Ebola outbreak in west Africa, the 2016 Zika outbreak and the ongoing COVID-19 pandemic. There is always a new strain of virus emerging

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7

Emamzadeh-Yazdi, Simin. "Antiviral, antibacterial and cytotoxic activities of South African plants containing cardiac glycosides." Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/33163.

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South Africa has one of the richest and diverse floras in the world with over 30000 species of higher plants. There are approximately 3000 species of medicinal plants in South Africa. The discovery of active compounds in medicinal plants plays a strategic role in the phytochemical investigation of crude plant extracts. Secondary metabolites of medicinal plants are a major source of drugs for the treatment of various health disorders. Cardiac glycosides are one of the subgroups of steroids modified from terpenoids. The existence of cardiac glycosides in some plant species often indicates toxici

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8

Li, Wanfei. "Chemical synthesis of anti-HIV compounds based on the aryl naphthalene lignans identified from justicia plants." HKBU Institutional Repository, 2019. https://repository.hkbu.edu.hk/etd_oa/685.

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Background: Natural products have been a rich source for the discovery of lead compounds in modern drug discovery. 6,7'-Cyclolignans are a class of secondary metabolites which are widely distributed in more than 20 families. This important class of lignans continue to attract the interest of the pharmaceutical industry owing to their remarkable biological benefits, particularly for their anti-tumor and antiviral properties. Arylnaphthalene lignans (ANLs) belong to 6,7'-cyclolignans which contain a 2,3-dimethyl-1-phenyl-naphthalene core structure. ANLs are widely distributed in plants. Justicia

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9

Kalogirou, Maria. "Antiviral and quality effects of chemical elictors and Cucumber Mosaic Virus (CMV) infection on tomato plants and fruits." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/7278.

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Cucumber mosaic virus (CMV) has emerged as one of the most serious threats to tomato cultivation in Greece. In the present study the effects of Benzothiadiazoles (BTH) and pyraclostrobin against mechanically or aphid-transmitted CMV in tomato plants, of hybrid F1 Clodin, were investigated in greenhouse experiments. BTH was confirmed as capable of inducing systemic acquired resistance (SAR) in tomato seedlings against CMV, while pyraclostrobin was not. Responses to BTH application and/or CMV inoculation on Spanish tomato hybrid Delos (BTH, BTH+CMV, CMV treatments) were monitored during winter a

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10

GHOSH, Gopal Chandra. "Behavior of antibiotics and antiviral drugs in sewage treatment plants and risk associated with their widespread use under pandemic condition." 京都大学 (Kyoto University), 2009. http://hdl.handle.net/2433/85391.

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The concern for pharmaceutically active compounds (PhACs) as contaminants in the environment and the need to assess their environmental risk have greatly increased since the early nineties. Among PhACs, antibiotics and antiviral drugs are of important concern due to their role in growing antibiotic and antiviral drugs resistance among pathogenic bacteria and influenza viruses, respectively. Besides resistance issue, the compounds may upset sensitive ecosystems as they are designed to be highly bioactive. Clinically-important antibiotics are virtually ubiquitous contaminants in sewage water and

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11

SAAB, Antoine. "Phytochemical analysis, antiproliferative against k562 humam chronic myelogenus leukemia, antiviral and hypoglycaemic activities of cedrus species and medicinal plants native from Libanon." Doctoral thesis, Università degli studi di Ferrara, 2011. http://hdl.handle.net/11392/2388806.

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There are four kinds of Cedar, three of them naturally present in the Mediterranean Sea region: Cedrus libani, in Lebanon, Syria and Turky, Cedrus atlantica in Algeria and Morocco, Cedrus brevifolia in Cyprus Island While Cedrus deodara in Himalaya Mountains . The wood essential oils of C. libani, C .atalantica and C. deodara inhibited the proliferation of k 562 cell line with IC50 Value of 23.38, 59.37 and 37.09 µg.ml-1 respectively. Meanwhile Cedrus libani wood oils showed a percentage of erythroide differentiation of 15% at the concentration of 5µg.ml-1another side Cedrus deodara wood oil

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12

Darfeuil, Michèle. "Plantes antivirales et médications traditionnelles." Paris 5, 1988. http://www.theses.fr/1988PA05P152.

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13

Clain, Marie Élodie. "Valorisation des éco-extraits de plantes médicinales réunionnaises dans la lutte contre les maladies virales émergentes de l'océan Indien." Thesis, La Réunion, 2018. http://www.theses.fr/2018LARE0033/document.

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Les maladies virales à transmission vectorielle émergentes et ré-émergentes comme la dengue, le chikungunya ou le zika sont responsables de nombreuses épidémies sévères à travers le monde. Récemment, la propagation rapide et très étendue du virus zika (ZIKV) ainsi que les complications neurologiques graves liées à l’infection par ZIKV ont incité l’Organisation Mondiale de la Santé (OMS) à déclarer le ZIKV comme une urgence de santé publique mondiale. Aujourd’hui, les mesures préventives ou curatives de l’infection par ZIKV sont quasiment inexistantes. D’autre part, la flore endémique de La Réu

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14

Simões, Claudia Maria Oliveira. "Etude de l'activite antivirale et des relations structure-activite de substances d'origine naturelle : plantes utilisees en medecine traditionnelle au sud du bresil, sapogenines et saponosides triterpeniques." Rennes 1, 1992. http://www.theses.fr/1992REN1B021.

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15

Padilla, Marina Aiello 1986. "Atividade antiviral de extratos de plantas do Cerrado contra herpesvírus." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/308716.

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Orientador: Clarice Weis Arns<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas<br>Made available in DSpace on 2018-08-18T22:42:12Z (GMT). No. of bitstreams: 1 Padilla_MarinaAiello_M.pdf: 819976 bytes, checksum: ee10d49c35496b65a75f47504870ce54 (MD5) Previous issue date: 2011<br>Resumo: Os herpesvírus são responsáveis por enfermidades importantes em humanos e animais. Em animais, estão associados a doenças que causam grandes perdas econômicas. Em humanos, a gravidade da enfermidade é maior quando os pacientes são imunossuprimidos. Além disso, já exi

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16

Barros, Alyne Vieira 1986. "Avaliação in vitro do potencial antiviral de extratos da planta Guettarda angelica Mart. Ex Müll. Arg. frente a vírus animais." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/313441.

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Orientador: Clarice Weis Arns<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas<br>Made available in DSpace on 2018-08-19T02:57:43Z (GMT). No. of bitstreams: 1 Barros_AlyneVieira_M.pdf: 608733 bytes, checksum: 93e4d814c0f99c65741a343e76d35fc4 (MD5) Previous issue date: 2011<br>Resumo: Estudos de plantas medicinais com conhecimento tradicional têm sido uma fonte potencial de substâncias com atividades farmacológicas e biológicas significantes. Guettarda angelica Mart. ex Müll. Arg. (Rubiaceae) é uma planta medicinal no qual suas raízes são popularmen

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17

Kudi, Ayuba Caleb. "Antiviral and antibacterial screening of some Nigerian medicinal plant extracts." Thesis, University of Leicester, 2000. http://hdl.handle.net/2381/29814.

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Plants from Northern Nigeria with a history of use in both human and veterinary traditional medicine have been investigated in vitro, for antiviral and antibacterial activity and their cytotoxicity against human cells in culture determined. Aqueous extracts were tested against poliovirus, astrovirus, human and Equine herpes simplex virus and canine and bovine parvovirus, using the microtitre plate inhibition test. Most of the extracts were non toxic to cells in culture and had activity against more than one virus at a dose rate of between 100 and 400 g/100. the most effective of the plant extr

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18

Barroso, Lana Karine Vasconcelos. "Atividade antiviral in vitro de plantas medicinais da flora cearense contra o vírus da dengue." Universidade de Fortaleza, 2015. http://dspace.unifor.br/handle/tede/96199.

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Made available in DSpace on 2019-03-30T00:07:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-10-29<br>Dengue is an infectious, tropical and endemic disease. Dengue demands numerous efforts aimed at its prevention and control. The lack of an effective vaccine as well as specific treatment to combat the virus has encouraged the development of research to verify products with antiviral activity, especially the use of natural products. This study aimed to evaluate the antiviral activity in vitro of medicinal plants of Ceará flora against serotypes 2 and 3 of the dengue virus. In search

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19

KAIJ, A. KAMB MANTANT. "Contribution a l'etude des plantes antivirales : actions anthiherpetique et antipoliomyelitique de la centauree noire (centaurea nigra l.)." Rennes 1, 1990. http://www.theses.fr/1990REN1B011.

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20

Pontes, Cláudia de Souza Lima. "Comunicação cruzada entre o receptor antiviral NIK1 e imunidade antibacteriana em plantas." Universidade Federal de Viçosa, 2017. http://www.locus.ufv.br/handle/123456789/18867.

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Submitted by Reginaldo Soares de Freitas (reginaldo.freitas@ufv.br) on 2018-04-19T15:50:58Z No. of bitstreams: 1 texto completo.pdf: 1496637 bytes, checksum: 5fe9118e3af447fde79634e413e36251 (MD5)<br>Made available in DSpace on 2018-04-19T15:50:58Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1496637 bytes, checksum: 5fe9118e3af447fde79634e413e36251 (MD5) Previous issue date: 2017-06-30<br>NIK1 (NSP Interacting kinase I) é um receptor cinase da família das LRRII-RLKs (leucine rich repeat II – receptor like kinase), identificado como alvo de virulência da proteína NSP (Nuclear Shuttle

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21

Li, Sizhun. "SnRK1-eIF4E Interaction in Translational Control and Antiviral Defense." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1417694518.

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22

Techer, Sophie. "Criblage d’activités biologiques de plantes endémiques ou indigènes de La Réunion - Recherche de molécules antivirales ciblant le virus du chikungunya." Thesis, La Réunion, 2013. http://www.theses.fr/2013LARE0014/document.

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Ce travail de thèse s'attache à identifier des plantes et/ou molécules à activités cytotoxique, antioxydante, anti-inflammatoire et antivirale ciblant le virus du chikungunya (CHIKV) dans le but de trouver des alternatives thérapeutiques vis-à-vis du stress oxydatif et de l'inflammation, mécanismes impliqués dans les maladies chroniques non transmissibles (diabète, obésité…), et de la maladie du chikungunya, maladie vectorielle réémergente. La première partie de ces travaux présente les résultats obtenus lors d'un criblage d'activités biologiques réalisé sur une sélection de dix-huit plantes e

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23

Zheng, Yue. "Identification d'une plante médicinale africaine par le DNA barcoding et étude de composés à activité anti-HIV de cette plante." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAJ095/document.

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Mon travail de thèse porte sur l'identification d'un arbre médicinal africain par le DNA barcoding et l'étude de composés à activité anti-VIH de cet arbre. Une première analyse de la séquence du marqueur ITS2 déterminée à partir d'ADN extrait de copeaux de bois a suggéré que la plante pourrait appartenir au genre Cassia ou au genre apparenté Senna. En analysant la séquence de ce marqueur ITS2 et aussi celle du trnHpsbA spacer d'une cinquantaine d'espèces des genres Cassia et Senna j'ai pu identifier la plante comme étant Cassia abbreviata. L'alignement de ces séquences m'a permis d'identifier,

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Ávila, Larissa Gabriela Morais de. "Reconstituição da via de sinalização antiviral mediada por NIK1 de Arabidopsis em tomateiros." Universidade Federal de Viçosa, 2017. http://www.locus.ufv.br/handle/123456789/18881.

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Submitted by Reginaldo Soares de Freitas (reginaldo.freitas@ufv.br) on 2018-04-19T17:29:27Z No. of bitstreams: 1 texto completo.pdf: 1046673 bytes, checksum: 303cdb874bd37b4e599895a7138301a8 (MD5)<br>Made available in DSpace on 2018-04-19T17:29:27Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1046673 bytes, checksum: 303cdb874bd37b4e599895a7138301a8 (MD5) Previous issue date: 2017-07-21<br>Fundação de Amparo à Pesquisa do Estado de Minas Gerais<br>Recentemente, uma nova camada de defesa antiviral foi caracterizada em Arabidopsis thaliana, que é mediada pelo receptor NIK (NSP-Interacti

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Venturi, Caroline Rita. "Análise química e avaliação da atividade antiviral de Baccharis anomala D.C." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/132767.

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Ocorrências comuns de infecções virais graves, aparecimento de cepas resistentes e um limitado número de quimioterápicos antivirais disponíveis mostram a necessidade da busca por novas substâncias ativas como antivirais. Muitas substâncias derivadas de plantas são candidatas ao estudo do seu potencial na terapia sistêmica e/ou profilaxia de herpes simplex virus 1 (HSV-1). Dentre as plantas com atividade antiviral, destacam-se as do gênero Baccharis. O objetivo geral do trabalho foi o estudo da composição química e avaliação da atividade antiviral das folhas de Baccharis anomala D.C. através de

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26

Nguimatsia, François. "Etude ethnopharmacologique chez les pygmees baka du cameroun." Rennes 1, 1990. http://www.theses.fr/1990REN1T088.

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Machado, João Paulo Batista. "Insights into regulatory mechanisms of the NIK-mediated antiviral defense: new components and the molecular bases of the defense." Universidade Federal de Viçosa, 2015. http://www.locus.ufv.br/handle/123456789/6505.

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Submitted by Marco Antônio de Ramos Chagas (mchagas@ufv.br) on 2015-11-04T08:18:47Z No. of bitstreams: 1 texto completo.pdf: 7981213 bytes, checksum: aeec0f7b21a6f76f66efa6e3304727b3 (MD5)<br>Made available in DSpace on 2015-11-04T08:18:48Z (GMT). No. of bitstreams: 1 texto completo.pdf: 7981213 bytes, checksum: aeec0f7b21a6f76f66efa6e3304727b3 (MD5) Previous issue date: 2015-07-20<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>A proteína NIK (NSP-interacting kinase), identificada por interagir com a proteína NSP (nuclear shuttle protein) de geminivírus, apresenta cara

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Teixeira, Ruan Maloni. "Panorama transcricional sob controle da proteína LIMYB, um componente da via de defesa antiviral mediada por NIK1." Universidade Federal de Viçosa, 2017. http://www.locus.ufv.br/handle/123456789/18898.

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Submitted by Reginaldo Soares de Freitas (reginaldo.freitas@ufv.br) on 2018-04-19T18:21:29Z No. of bitstreams: 1 texto completo.pdf: 5916812 bytes, checksum: 639d6c03f1d6b4f272d2a161b0ecbfc4 (MD5)<br>Made available in DSpace on 2018-04-19T18:21:29Z (GMT). No. of bitstreams: 1 texto completo.pdf: 5916812 bytes, checksum: 639d6c03f1d6b4f272d2a161b0ecbfc4 (MD5) Previous issue date: 2017-07-20<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>A proteína LIMYB (L10-interacting MYB domain-containing protein) foi recentemente identificada como um componente downstrean da via de

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Daoudi, El Idrissi Amina. ""Phyllanthus amarus" Schum. Et Thonn. "Phyllanthus niruri" L." Paris 5, 1995. http://www.theses.fr/1995PA05P200.

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Fialho, Luciana Gomes. "Caracterização dos efeitos imunomodulador e antiviral de uma espécie da família marcgraviaceae em modelo in vitro de infecção em linhagem de hepatócitos HUH-7 pelo vírus dengue-2." reponame:Repositório Institucional da FIOCRUZ, 2012. https://www.arca.fiocruz.br/handle/icict/12019.

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Made available in DSpace on 2015-10-21T12:19:32Z (GMT). No. of bitstreams: 2 luciana_fialho_ioc_mest_2012.pdf: 8648781 bytes, checksum: 436f2afe55001d26518f8d1e0a52d7f0 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2015-05-21<br>Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil<br>Várias doenças relacionadas à desregulação do sistema imunológico têm sido, há muito tempo, tratadas com a medicina fitoterápica, considerando que vários efeitos terapêuticos podem ser induzidos pela modulação de citocinas. Entretanto

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Martini, Matheus Cavalheiro 1983. "Avaliação in vitro da atividade antiviral de extratos de plantas frente ao metapneumovirus aviário (AMPV) e vírus respiratório sincicial bovino (BRSV)." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/317444.

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Orientadores: Clarice Weis Arns, Luciana Konecny Kohn<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-16T18:01:14Z (GMT). No. of bitstreams: 1 Martini_MatheusCavalheiro_M.pdf: 571995 bytes, checksum: 52ec8a0bed8fa3efd4434ec2a2e6a100 (MD5) Previous issue date: 2010<br>Resumo: Para avaliar a atividade antiviral dos extratos de plantas brasileiras foram eleitos o Metapneumovirus aviário (aMPV) e o vírus Respiratório sincicial bovino (BRSV) pertences à família Paramyxoviridae, subfamília Pneumovirinae, gêneros Metapneumo

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Gondim, Ana Claudia Silva. "Atividade antitumoral e antiviral de lectinas de leguminosas (tribo Phaseoleae, subtribo Diocleineae): ConBr, ConM, DLasiL e DSclerL." reponame:Repositório Institucional da UFC, 2014. http://www.repositorio.ufc.br/handle/riufc/10516.

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GONDIM, A. C. S. Atividade antitumoral e antiviral de lectinas de leguminosas (tribo Phaseoleae, subtribo Diocleineae): ConBr, ConM, DLasiL e DSclerL. 2014. 135 f. Tese (Doutorado em Bioquímica) - Centro de Ciências, Universidade Federal do Ceará, Fortaleza, 2014.<br>Submitted by Francisco Lacerda (lacerda@ufc.br) on 2014-12-03T10:56:53Z No. of bitstreams: 1 2014_tes_acsgondim.pdf: 4061405 bytes, checksum: 9553740277f9cb8e23f6fc7c6697bd11 (MD5)<br>Approved for entry into archive by José Jairo Viana de Sousa(jairo@ufc.br) on 2015-01-20T17:06:28Z (GMT) No. of bitstreams: 1 2014_tes_acsgondim.pdf

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Parker, Megan Elizabeth. "Vitamin A intake and antiviral properties of dietary traditional medicines among Kenyan Maasai children." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81425.

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The Maasai of East Africa traditionally consume a diet of milk, meat, and blood. Previous studies have found the Maasai to suffer from vitamin A deficiency (VAD). This micronutrient deficiency compromises systemic immunity and increases morbidity and mortality. A semi-quantitative food frequency questionnaire (FFQ) was used to investigate the vitamin A intake of small Maasai children in Loita, Kenya. On average, children consumed 596mug/dayRAE from retinoid sources and 956mug/dayRAE when coupled with beta-carotene sources. The measles virus (MV) has yet to be eradicated from East Africa

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Amankwaah, Collins. "Incorporation of selected plant extracts into edible chitosan films and the effect on the antiviral, antibacterial and mechanical properties of the material." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366220367.

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Martínez, García Fernando. "Análisis de la dinámica de replicación de un virus de RNA de plantas y del uso de microRNAs artificiales como estrategia antiviral." Doctoral thesis, Editorial Universitat Politècnica de València, 2014. http://hdl.handle.net/10251/35447.

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Los virus de RNA de cadena positiva conforman el grupo más numeroso y diverso de los patógenos virales de las plantas. Se replican mediante un mecanismo en el que la RNA polimerasa RNA dependiente viral, junto con otras proteínas virales y del huésped, sintetizan un intermediario de polaridad complementaria (o negativa), que a la vez sirve de molde para la síntesis del RNA genómico de polaridad positiva. Este mecanismo puede seguir un modelo geométrico o de stamping machine (Sardanyés et al. 2009). Por otro lado, las rutas de silenciamiento de RNA en plantas desempeñan un papel muy importante

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Respaud, Marie-José. "Etude phytochimique et évaluation d'activités biologiques de choisya ternata kunth (Rutaceae)." Toulouse, INPT, 1995. http://www.theses.fr/1995INPT043G.

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Choisya ternata kunth (rutaceae), connu sous le nom d'oranger du mexique, est cultive en europe comme plante ornementale. Dans son pays d'origine, le mexique, les feuilles de cette espece sont utilisees en medecine traditionnelle. Le premier chapitre de notre document est consacre, a l'etude bibliographique du genre choisya d'un point de vue botanique, d'un point de vue chimique, d'un point de vue biologique, et aux connaissances sur les limonoides de la famille des rutaceae. Le second chapitre concerne l'analyse de l'huile essentielle et l'isolement d'un glycoside de limonoide de ct#1, non id

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Hemmer, Caroline. "Développement et utilisation de nanobodies dirigés contre le Grapevine fanleaf virus (GFLV) en lutte antivirale et comme biocapteur in planta." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAJ085/document.

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Par leur stabilité, leur petite taille et leur nature monomérique, les domaines variables des immunoglobulines à chaînes lourdes, ou Nanobodies (Nb), sont incontournables en diagnostic et recherche médicale. Pourtant, leur utilisation en agro-biotechnologies demeure confidentielle.Dans l'idée de les utiliser pour étudier et combattre le Grapevine fanleaf virus (GFLV), responsable de la maladie du court-noué très préjudiciable à l'économie viticole mondiale, j'ai produit une collection de Nb spécifiques du GFLV.Fusionné à une protéine fluorescente et exprimé en plante de façon stable, un de ces

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Theisen, Linda [Verfasser], and Martina [Akademischer Betreuer] Sester. "Influenza A Virus Preparedness : Characterization of NS Gene Reassortants and the Antiviral Efficacy of Tannin-rich Plant Extracts / Linda Theisen. Betreuer: Martina Sester." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2014. http://d-nb.info/1058360949/34.

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Eloy, Ygor Raphael Gomes. "CaracterizaÃÃo fÃsico-quÃmica e estrutural de polissacarÃdeos obtidos de folhas da planta Aloe barbadensis Miller e avaliaÃÃo de suas atividades antiviral e anti-hemorrÃgica." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=8537.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico<br>Este trabalho teve como objetivos caracterizar fÃsico-quÃmica e estruturalmente polissacarÃdeos obtidos de folhas de Aloe barbadensis e avaliar suas atividades antiviral, anti-hemorrÃgica e prÃ-coagulante e possÃveis sinais de toxicidade. Foi realizada extraÃÃo aquosa de polissacarÃdeos totais (PT) de A. barbadensis, seguido de precipitaÃÃo por etanol e remoÃÃo dos contaminantes proteicos com TCA. A cromatografia em DEAE-celulose foi eficiente no fracionament

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Eloy, Ygor Raphael Gomes. "Caracterização físico-química e estrutural de polissacarídeos obtidos de folhas da planta Aloe barbadensis Miller e avaliação de suas atividades antiviral e anti-hemorrágica." reponame:Repositório Institucional da UFC, 2012. http://www.repositorio.ufc.br/handle/riufc/18809.

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ELOY, Ygor Raphael Gomes. Caracterização físico-química e estrutural de polissacarídeos obtidos de folhas da planta Aloe barbadensis Miller e avaliação de suas atividades antiviral e anti-hemorrágica. 2012. 186 f. Tese (Doutorado em bioquímica)- Universidade Federal do Ceará, Fortaleza-CE, 2012.<br>Submitted by Elineudson Ribeiro (elineudsonr@gmail.com) on 2016-07-28T15:19:36Z No. of bitstreams: 1 2012_tese_yrgeloy.pdf: 4816746 bytes, checksum: df9405e734ec6c678912a942f68c57ad (MD5)<br>Approved for entry into archive by José Jairo Viana de Sousa (jairo@ufc.br) on 2016-08-02T14:43:54Z (GMT) No.

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Almeida, J?nior Renato Ferreira de. "Avalia??o do potencial antiviral do extrato bruto da planta Caesalpinia echinata e da rifampicina contra v?rus dengue-2 em cultura de c?lulas." Universidade Federal do Rio Grande do Norte, 2015. http://repositorio.ufrn.br/handle/123456789/20321.

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Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-04-25T23:51:26Z No. of bitstreams: 1 RenatoFerreiraDeAlmeidaJunior_DISSERT.pdf: 1495100 bytes, checksum: f007a8b773603ddf1cf491e66172e839 (MD5)<br>Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-04-28T20:17:55Z (GMT) No. of bitstreams: 1 RenatoFerreiraDeAlmeidaJunior_DISSERT.pdf: 1495100 bytes, checksum: f007a8b773603ddf1cf491e66172e839 (MD5)<br>Made available in DSpace on 2016-04-28T20:17:55Z (GMT). No. of bitstreams: 1 RenatoFerreiraDeAlmeidaJunior_DISSERT.pdf: 1495100 bytes,

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Nakashima, Tomoe. "Etude phytochimique, évaluation des activités antifongiques et antivirales de trois verbenaceae : Lippia alba N.E.Brown, Lippia multiflora Mold. Citharexylum myrianthum Cham." Toulouse, INPT, 1993. http://www.theses.fr/1993INPT045G.

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Lippia alba n. E. Brown et lippia multiflora mold. , bien connues au bresil et en afrique de l'ouest, ainsi que citharexylum myrianthum cham. , espece sud americaine, sont des verbenaceae utilisees en medecine traditionnelle. Dans la premiere partie de notre memoire, nous rappelons les caracteres botaniques des trois especes, leur localisation geographique et leur interet economique. La deuxieme partie porte sur l'obtention de substances susceptibles de presenter un interet biologique. Deux iridoides ont ete isoles de lippia alba, trois de lippia multiflora et trois de citharexylum myrianthum.

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Martínez, Priego Lucía. "Actividad antiviral de pequeños RNAs endógenos y supresión de silenciamiento génico por la proteína 16K del virus del cascabeleo del tabaco (TRV)." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/61464.

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[EN] During viral infections, the outcome of the infective process is a net balance between the compatible and defence interactions. When a virus infects the eukaryotic cell, it must deal with different host defence mechanisms among which RNA silencing is part of the initial plant innate defence response. RNA silencing in plants has the role of restraining viral proliferation in the infected cell and therefore regulates the equilibrium between viral load and plant cell integrity that is key for the plant-virus compatibility. The virus itself is inductor, target and suppressor of the RNA silenc

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Hay, Anne-Emmanuelle. "Métabolites secondaires isolés de deux plantes néo-calédoniennes, Calophyllum Caledonicum Vieill. Et Garcinia Vieillardii P. : étude chimique et valorisation biologique." Angers, 2003. http://www.theses.fr/2003ANGE0503.

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L'étude phytochimique de deux Clusiaceae néo-calédoniennes : Calophyllum caledonicum et Garcinia vieillardii a permis d'isoler et de caractériser 40 composés issus du métabolisme secondaire. Parmi ceux-ci, une majorité de xanthones et d'acides dérivés de la chromanone ont été identifiés. Huit de ces produits naturels sont originaux. Diverses évaluations biologiques menées sur les extraits bruts et les composés purifiés - propriétés antifongiques, antiprotéases, anti-VIH, antipaludiques, antileishmaniennes et/ou antiradicalaires - ont par ailleurs conduit à la mise en évidence de propriétés sig

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Frédé, Brigitte. ""Echinacea purpurea"." Paris 5, 1994. http://www.theses.fr/1994PA05P066.

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Meunier, Thomas. "Étude des mécanismes d’action de nouveaux inhibiteurs de coronavirus humains." Thesis, Université de Lille (2018-2021), 2021. http://www.theses.fr/2021LILUS057.

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Les coronavirus sont des virus ARN enveloppés qui infectent les mammifères et les oiseaux. Chez l’homme, quatre coronavirus causent des maladies bénignes comme des rhumes et rhinites, HCoV-OC43, HCoV-229E, HCoV-NL63 et HCoV-HKU1. Au cours des deux dernières décennies, trois nouveaux coronavirus hautement pathogènes ont été identifiés, le SARS-CoV (« Severe Acute Respiratory Syndrome ») en 2003, le MERS-CoV (« Midle East Respiratory Syndrome ») en 2012 et récemment le SARS-CoV-2 en décembre 2019. La pandémie mondiale du COVID-19 a mis en évidence le manque d’antiviraux ciblant les coronavirus.

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Bader, Theresa [Verfasser], Philippe [Akademischer Betreuer] Schmitt-Kopplin, Karl-Heinz [Gutachter] Engel, and Philippe [Gutachter] Schmitt-Kopplin. "Isolation and characterization of antivirals against HIV-1 from plant extracts / Theresa Bader ; Gutachter: Karl-Heinz Engel, Philippe Schmitt-Kopplin ; Betreuer: Philippe Schmitt-Kopplin." München : Universitätsbibliothek der TU München, 2019. http://d-nb.info/1196292884/34.

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Haas, Gabrielle Keller Mario. "Étude de l'importation nucléaire de la protéine P6 du virus de la mosaïque du chou-fleur et de son rôle dans la suppression du RNA silencing antiviral." Strasbourg : Université Louis Pasteur, 2007. http://eprints-scd-ulp.u-strasbg.fr:8080/873/01/HAAS_Gabrielle_2007.pdf.

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Quispe, Bravo Bernardo Esteban. "Actividad inhibitoria de los aceites esenciales de Lippia alba contra el virus zika en células VERO – 76 y C6/36 de Aedes albopictus." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2018. https://hdl.handle.net/20.500.12672/9208.

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El virus Zika es un flavivirus emergente que en los últimos 2 años causó una serie de problemas de salud y económicas en América Latina; afectando con mayor severidad a los recién nacidos. Por ello, evaluamos la actividad inhibitoria de los aceites esenciales de la planta aromática (verbenaceae) Lippia alba en la línea celular VERO – 76 y C6/36. Lippia alba se colectó en el departamento de Amazonas y se identificó en el Museo de Historia Natural de la UNMSM. La extracción del aceite esencial total de la planta entera de Lippia alba fue realizada mediante un equipo de hidrodestilación por arras

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Haas, Gabrielle. "Étude de l’importation nucléaire de la protéine P6 du virus de la mosaïque du chou-fleur et de son rôle dans la suppression du RNA silencing antiviral." Université Louis Pasteur (Strasbourg) (1971-2008), 2007. https://publication-theses.unistra.fr/public/theses_doctorat/2007/HAAS_Gabrielle_2007.pdf.

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La protéine P6 du virus de la mosaïque du chou-fleur (CaMV), un pararétrovirus de plante, est un composant clé du cycle de multiplication du CaMV. Cette protéine multifonctionnelle est impliquée dans le déterminisme du spectre d’hôte, dans l’expression des symptômes de la virose, et dans la synthèse des autres protéines virales à partir d’un ARN polycistronique, selon un mécanisme non canonique. En outre, cette protéine forme des corps d’inclusion cytoplasmiques, les viroplasmes denses, considérés comme un compartiment viral où résident les étapes principales de la multiplication virale. Enfin

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