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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
171

Finding new genes causing motor neuron diseases

Gopinath, Sumana. January 2006 (has links)
Thesis (Ph. D.)--University of Sydney, 2007. / Title from title screen (viewed Apr. 12, 2007). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the Faculty of Medicine. Includes bibliography. Also issued in print.
172

Characterization of the sequence and substrate reactivity of dihydroneopterin aldolase and its site-directed mutants by tandem mass spectrometry

Scherperel, Gwynyth. January 2006 (has links)
Thesis (M.S.)--Michigan State University. Dept. of Chemistry, 2006. / Title from PDF t.p. (viewed on Nov. 20, 2008) Includes bibliographical references (p. 105-110). Also issued in print.
173

Generation of persistence data for DSL-fungi in intact soil microcosms using PCR-based markers /

Chaudhry, Omar, January 1900 (has links)
Thesis (M. Sc.)--Carleton University, 2004. / Includes bibliographical references (p. 56-69). Also available in electronic format on the Internet.
174

Plasmid-associated analogs of the dnaB gene in Escherichia coli; genetic and physiological evidence for occurrence, differences and interactions.

Wang, Patrick J. Carleton University. Dissertation. Biology. January 1978 (has links)
Thesis--Carleton University. / Also available in electronic format on the Internet.
175

Generation of recombinant influenza A virus without M2 ion channel protein by introducing a point mutation at the 5' end of viral intron

Cheung, Kai-wing. January 2004 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2005. / Title proper from title frame. Also available in printed format.
176

Regulation of the immune response; focusing on somatic hyper-mutation

Källberg, Eva. January 1995 (has links)
Thesis (Ph. D.)--Lund University, 1995. / Published dissertation.
177

Effects of active oxygen species generated from hydrogen peroxide in Neurospora crassa and Salmonella typhimurium

Han, Jin-Soon. Brockman, Herman E. January 1991 (has links)
Thesis (Ph. D.)--Illinois State University, 1991. / Title from title page screen, viewed December 8, 2005. Dissertation Committee: Herman E. Brockman (chair), Radheshym K. Jayaswal, Alan J. Katz, David F. Weber, Brian J. Wilkinson. Includes bibliographical references (leaves 113-125) and abstract. Also available in print.
178

Regulation of the immune response; focusing on somatic hyper-mutation

Källberg, Eva. January 1995 (has links)
Thesis (Ph. D.)--Lund University, 1995. / Published dissertation.
179

Perfil de mutações de resistência e polimorfismos genéticos em variantes do vírus da hepatite B circulantes na região de Botucatu / Profile of resistance mutations and genetic polymorphisms in hepatitis B virus variants circulating in the Botucatu region

Barreto, Sarita Fiorelli Dias [UNESP] 28 February 2014 (has links) (PDF)
Made available in DSpace on 2015-03-03T11:52:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-02-28Bitstream added on 2015-03-03T12:06:34Z : No. of bitstreams: 1 000807446_20150227.pdf: 464768 bytes, checksum: 7654a1cf69fa8f20c440d8af16290f2d (MD5) / A infecção pelo vírus da hepatite B (VHB) constitui um grave problema de saúde pública mundial, sendo responsável por doenças hepáticas agudas, crônicas, cirrose e hepatocarcinoma. Com o intuito de diminuir a replicação viral e a progressão da infecção pelo VHB, foram aprovadas sete drogas para o tratamento da hepatite B crônica nos últimos 20 anos, sendo que no Brasil, o protocolo de tratamento baseia-se no uso dos fármacos: Interferon-alfa, Inteferon-alfa peguilado, Lamivudina, Tenofovir, Entecavir e Adefovir. No entanto, um obstáculo à utilização das drogas que atuam inibindo enzimas virais é a emergência de variantes resistentes. Desta maneira, sabendo-se que o estudo da variabilidade genética das regiões genômicas do VHB é importante não somente para analisar o perfil de resistência do vírus aos antivirais, mas também para avaliar as variantes virais circulantes no Brasil, a finalidade deste trabalho foi determinar o perfil de mutações de resistência e polimorfismos genéticos em variantes do Vírus da Hepatite B circulantes na região de Botucatu. A região genômica pol do VHB foi amplificada e sequenciada a partir de metodologia in-house, para avaliar o perfil de mutações de resistência e de polimorfismos genéticos. Dados clínicos e laboratoriais foram coletados do prontuário médico dos pacientes. Os resultados obtidos demonstraram a presença das mutações de resistência rtM204V, rtM204I e rtL180M, que conferem resistência cruzada à Lamivudina e Telbivudina e, podem ocasionar resistência cruzada ao Entecavir quando na presença de mutação adicional. Em relação aos polimorfismos, 37 substituições foram encontradas, das quais várias já foram associadas à resistência primária ou secundária ao tratamento antiviral pelo VHB, sendo que 4 ainda não foram relatadas pela literatura, sendo elas Q262E, Q139H, W79C e W257H, o que demonstra que estas subststituições ... / Hepatitis B virus (HBV) infection is a serious global public health problem, being responsible for acute and chronic liver diseases, cirrhosis and hepatocellular carcinoma. In order to reduce viral replication and progression of HBV infection, seven drugs for the treatment of chronic hepatitis B have been approved in the past 20 years, and in Brazil, the treatment protocol is based on the use of the drugs: Interferon-alpha, pegylated Interferon-alfa, Lamivudine, Tenofovir, Entecavir and Adefovir. However, an obstacle to the use of drugs that act by inhibiting viral enzymes is the emergence of resistant variants. Therefore, the study of the variability of HBV genome is important not only to assess the resistance profile of the virus to antivirals, but also to evaluate the circulating viral variants in Brazil. Thus, the purpose of this study was to evaluate the profile of resistance mutations and genetic polymorphisms in Hepatitis B virus variants circulating in Botucatu. HBV pol genomic region was amplified and sequenced by in-house methodology, to evaluate the profile of resistance mutations and genetic polymorphisms. Additional clinical and laboratory parameters were collected from the medical records of patients. The results showed the presence of rtM204V, rtM204I and rtL180M resistance mutations, which confer cross-resistance to Lamivudine and Telbivudine and, may cause cross-resistance to Entecavir in the presence of additional mutation. Regarding polymorphisms, 37 substitutions were found, including those associated to primary and secondary resistance to HBV treatment, and of these four substitutions have not been reported in the literature, which were Q262E, Q139H, W79C and W257H, demonstrating that these substitutions may be characteristic of HBV viral variants found in our region
180

Perfil de mutações de resistência e polimorfismos genéticos em variantes do vírus da hepatite B circulantes na região de Botucatu /

Barreto, Sarita Fiorelli Dias. January 2014 (has links)
Orientador: Rejane Maria T. Grotto / Coorientador: Maria Inês M. C. Pardini / Banca: Giovanni Faria Silva / Banca: Andre Martins / Resumo: A infecção pelo vírus da hepatite B (VHB) constitui um grave problema de saúde pública mundial, sendo responsável por doenças hepáticas agudas, crônicas, cirrose e hepatocarcinoma. Com o intuito de diminuir a replicação viral e a progressão da infecção pelo VHB, foram aprovadas sete drogas para o tratamento da hepatite B crônica nos últimos 20 anos, sendo que no Brasil, o protocolo de tratamento baseia-se no uso dos fármacos: Interferon-alfa, Inteferon-alfa peguilado, Lamivudina, Tenofovir, Entecavir e Adefovir. No entanto, um obstáculo à utilização das drogas que atuam inibindo enzimas virais é a emergência de variantes resistentes. Desta maneira, sabendo-se que o estudo da variabilidade genética das regiões genômicas do VHB é importante não somente para analisar o perfil de resistência do vírus aos antivirais, mas também para avaliar as variantes virais circulantes no Brasil, a finalidade deste trabalho foi determinar o perfil de mutações de resistência e polimorfismos genéticos em variantes do Vírus da Hepatite B circulantes na região de Botucatu. A região genômica pol do VHB foi amplificada e sequenciada a partir de metodologia in-house, para avaliar o perfil de mutações de resistência e de polimorfismos genéticos. Dados clínicos e laboratoriais foram coletados do prontuário médico dos pacientes. Os resultados obtidos demonstraram a presença das mutações de resistência rtM204V, rtM204I e rtL180M, que conferem resistência cruzada à Lamivudina e Telbivudina e, podem ocasionar resistência cruzada ao Entecavir quando na presença de mutação adicional. Em relação aos polimorfismos, 37 substituições foram encontradas, das quais várias já foram associadas à resistência primária ou secundária ao tratamento antiviral pelo VHB, sendo que 4 ainda não foram relatadas pela literatura, sendo elas Q262E, Q139H, W79C e W257H, o que demonstra que estas subststituições ... / Abstract: Hepatitis B virus (HBV) infection is a serious global public health problem, being responsible for acute and chronic liver diseases, cirrhosis and hepatocellular carcinoma. In order to reduce viral replication and progression of HBV infection, seven drugs for the treatment of chronic hepatitis B have been approved in the past 20 years, and in Brazil, the treatment protocol is based on the use of the drugs: Interferon-alpha, pegylated Interferon-alfa, Lamivudine, Tenofovir, Entecavir and Adefovir. However, an obstacle to the use of drugs that act by inhibiting viral enzymes is the emergence of resistant variants. Therefore, the study of the variability of HBV genome is important not only to assess the resistance profile of the virus to antivirals, but also to evaluate the circulating viral variants in Brazil. Thus, the purpose of this study was to evaluate the profile of resistance mutations and genetic polymorphisms in Hepatitis B virus variants circulating in Botucatu. HBV pol genomic region was amplified and sequenced by in-house methodology, to evaluate the profile of resistance mutations and genetic polymorphisms. Additional clinical and laboratory parameters were collected from the medical records of patients. The results showed the presence of rtM204V, rtM204I and rtL180M resistance mutations, which confer cross-resistance to Lamivudine and Telbivudine and, may cause cross-resistance to Entecavir in the presence of additional mutation. Regarding polymorphisms, 37 substitutions were found, including those associated to primary and secondary resistance to HBV treatment, and of these four substitutions have not been reported in the literature, which were Q262E, Q139H, W79C and W257H, demonstrating that these substitutions may be characteristic of HBV viral variants found in our region / Mestre

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