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Dissertations / Theses on the topic 'Gram-negative anaerobic bacteria (Study)'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Garcia, Julio Cesar Levano. "Caracterização de Mutantes de Xanthomonas citri Gerados por Disrupção Gênica Randômica Usando Transposon." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/46/46131/tde-10052018-155618/.

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Xanthomonas axonopodis pv citri (Xac), uma bactéria gram negativa, é a causadora da doença Cancro Cítrico que ocasiona enormes prejuizo na citricultura brasileira. Com o seqüenciamento do genoma deste patógeno foram encontradas inúmeras sequências codificadores com funções desconhecidas. Assim com a finalidade de estudos funcionais do genoma de Xac, foram gerados mutantes randômicos usando o transposon EZ::TN, que induziu disrupção aleatoria de seus genes com o intuito de avaliar que genes inativados afetam a patogenicidade da bactéria. Para o mapeamento do local de inserção do transposon foi

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2

Rosello, Gilchrist A. "Antibiotic resistant Gram-negative bacteria in long-term care facilities : an epidemiological and dynamic modelling study." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10047504/.

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Tackling antimicrobial resistance (AMR) is a national and global priority. Despite this, much of our understanding of the epidemiology and transmission of AMR outside the hospital, and thus, how we might control it, remains limited. Long term care facilities (LTCFs) play an important role in the care of older people. However, there have been few studies of the epidemiology and transmission of AMR in this setting. LTCF residents present with frequent co-morbidities which increase their risk of hospitalisation and of AMR infection. LTCFs also offer opportunities for transmission of AMR strains d

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3

Hunt, Kevan Owen. "An epidemiological study in the greater Durban area of gram negative bacilli resistant to aminoglycoside antibiotics." Thesis, Cape Technikon, 1998. http://hdl.handle.net/20.500.11838/2254.

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Thesis (MTech (Medical Technology))--Cape Technikon, 1998.<br>This study was undertaken to investigate resistance to aminoglycoside antibiotics and the transfer of resistance in selected Gram negative bacilli in hospitals in the Greater Durban area in order to determine whether the development of resistance in this region was similar to that found in other countries and whether it was the same in the hospitals in the region. It was intended that the study might expose the existence of nosocomial pathogens of a particular strain or endemic plasmids responsible for aminoglycoside antibioti

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4

Winkler, Marisa. "Fitness and Substrate Specificity among Serine ß-lactamases: a Study of KPC, SHV, and the AmpC of Pseudomonas aeruginosa." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1427444210.

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5

Zhong, Meng. "Understanding multidrug resistance in Gram-negative bacteria -- A study of a drug efflux pump AcrB and a periplasmic chaperone SurA." UKnowledge, 2013. http://uknowledge.uky.edu/chemistry_etds/17.

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Multiple drug resistance (MDR) has been a severe issue in treatment and recovery from infection.Gram-negative bacteria intrinsically exhibit higher drug tolerance than Gram-positive microbes. In this thesis, two proteins involved in Gram-negative bacterial MDR were studied, AcrB and SurA. Resistance-nodulation-cell division pump AcrAB-TolC is the major MDR efflux system in Gram-negative bacteria and efficiently extrudes a broad range of substances from the cells. To study subtle conformational changes of AcrB in vivo, a reporter platform was designed. Cysteine pairs were introduced into differ

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6

Guedes, Juliana Campos Diniz. "Caracterização química e atividade biológica de extratos etanólicos de Curcuma longa e Bixa orellana /." Araçatuba, 2019. http://hdl.handle.net/11449/182359.

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Orientador: Elisa Helena Giglio Ponsano<br>Resumo: O objetivo deste estudo foi investigar a composição química e as atividades antimicrobiana e antioxidante dos extratos etanólicos de Curcuma longa e Bixa orellana, na busca por substituintes aos aditivos sintéticos utilizados na indústria de alimentos. Pela espectrometria de massa (GC-MS) foram identificados bisdemetoxicurcumina, demetoxicurcumina e curcumina no extrato de C. longa e prunina e naringenina no extrato de B. orellana. C. longa apresentou atividade antimicrobiana frente a Clostridium sporogenes e Staphylococcus aureus, com concent

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7

Rosetti, Andreza da Silva. "Bordetella pertussis: participação da arginase, TGF-b e TLR4 no controle da síntese de óxido nítrico em macrófagos derivados de medula óssea murina." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/87/87131/tde-15032010-164402/.

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Bordetella pertussis e Bordetella parapertussis são os principais agentes causadores da coqueluche no homem. O óxido nítrico é fundamental para o controle de diversos processos fisiopatológicos. Neste trabalho analisamos sinais moleculares envolvidos na produção de NO em macrófagos derivados de medula óssea murina (BMDMO) infectadas por Bpertussis e Bparapertussis. Nossos resultados mostraram que BMDMO de C57BL/6 estimulados com Bpertussis não sintetizaram níveis significativos de nitrito, ao contrário da infecção com Bparapertussis. BMDMO de C57BL/6 infectados por Bpertussis e Bparapertussis

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8

Lee, Mei-Feng, and 李美鳳. "Study on class 1 integron among Gram-negative bacteria." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/58943822496165949439.

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9

Liu, Chih-Wei, and 劉智偉. "The Study of Vibrio vulnificus Blue Fluorescent Protein Applications for Gram Negative Bacteria Bioimaging System." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/27077609491115446733.

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碩士<br>國立成功大學<br>化學工程學系碩博士班<br>93<br>The expression of the wild type (bfp) and mutation gene (bfp-D7) of blue fluorescent protein (BFP) isolated from Vibrio vulnificus CKM-1 in the giant protoplasts of Escherichia coli XL1B and V. vulnificus CKM-1 were investigated, respectively. In addition, the method for quantifying of the fluorescent intensity of BFP by fluorescent microscopy as well as digital camera was illustrated. The results first showed that both the protoplasts of E. coli and V. vulnificus were able to express bfp as well as bfp-D7, indicating that giant protoplasts possess cell fu

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10

Domingues, Marco André Manso 1985. "Study of the mechanism of action of the antimicrobial peptide rBPI21 in gram-negative bacteria." Doctoral thesis, 2012. http://hdl.handle.net/10451/8633.

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Tese de doutoramento, Ciências Biomédicas (Bioquímica Médica), Universidade de Lisboa, Faculdade de Medicina, 2012<br>Antimicrobial peptides (AMPs) are currently looked as new candidates to overcome the bacterial resistance against therapeutic antibiotics. However, their mechanism of action remains unclear, despite several theories having been proposed. The understanding of the processes that govern AMPs activity is the best way to provide rational design of new antibiotics for further clinical use against bacterial infections. Human AMPs are part of the innate immune system and synthetic vers

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11

Chou, Yu-Heng, and 周煜恆. "Study on the Antibacterial and Bactericidal Effects on Gram-Positive and –Negative Bacteria by Toxocara canis Antigenic Proteins." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/81097927953997491523.

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12

Liu, Tsai-Hung, and 劉再鈜. "The Study of luminant property of Vibrio vulnificus Blue Fluorescence Protein Applications for Giant protoplasts of Gram Negative Bacteria." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/66362674457430687596.

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碩士<br>國立成功大學<br>化學工程學系碩博士班<br>94<br>The expression of blue fluorescent protein gene (bfp) and mutated gene (bfp-D7) from bfp by random mutagenesis isolated from Vibrio vulnificus CKM-1 in the giant protoplasts of Escherichia coli XL1B and V. vulnificus CKM-1 were investigated, respectively. In addition, we built a system for quantifying the fluorescent intensity of BFP and screened a high efficiency promoter. We defined two kinds of fluorescence density, one was specific blue density that was de-unit data from Image-Pro Plus’ color depth ; another’s overall blue density that was from specific

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13

Williams, Dillon Christopher. "A controlled in vitro study of the effectiveness of Alepidea amatymbica herbal tincture and homoeopathic dilutions (01 and 06) against Gram-positive and Gram-negative bacteria." Thesis, 2003. http://hdl.handle.net/10321/2007.

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Mini-dissertation submitted in partial compliance with the requirements for the Master's Degree in Technology: Homoeopathy, Durban Institute of Technology, 2003.<br>The purpose of this study was to determine the efficacy of Alepidea amatymbica tincture and homoeopathic dilutions to the 1st and 6th decimal potency as compared to ethanol (negative control) in the in vitro inhibition of Escherichea coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Staphylococcus aureus and Bacillus cereus in terms of the disc diffusion test. Vancomycin and gentamicin were included in the study as positive

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14

Invernizzi, Jonathan Reuben Rai. "A controlled in vitro study of the effectiveness of Tulbagia Violacea in herbal tincture and homoeopathic dilution (1X and 6X) against gram- positive and gram negative bacteria." Thesis, 2002. http://hdl.handle.net/10321/2030.

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Mini-dissertation submitted in partial compliance with the requirements of the Master's Degree in Technology: Homoeopathy, Durban Institute of Technology, 2002.<br>The purpose of this study was to determine the effect that Tulbagia violacea ethanolic herbal tincture, and Tulbagia violacea IX and 6X homoeopathic potencies, had 011 the in vitro growth inhibition of Escherichia coli, Klebsiella pneumoniae, Staphylococcus ourens. Pseudomonas aeruginosa and Bacil/us cereus respectively, as compared to a ethanol negative control. The final results were expressed as a ratio to the values obtaine

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15

Bhana, Ratilal Hargovind. "An Epidemiological study of gentamicin resistant gram negative bacteria with particular reference to pseudomonas aeruginosa at King Edward V111 Hospital, Durban." Thesis, 1985. http://hdl.handle.net/10413/5712.

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The sources of gentamicin resistant pseudomonads and enterobacteria were studied in detail. A total of 1703 gentamicin resistant gram negative bacilli (GRGNB) isolated from patients, staff and their immediate environment were studied over a 6 month period . Of these 954 were isolated from clinical specimens obtained from patients and 540 from their immediate environment. A furthur 209 stains were isolated from the staff members who were responsible for the care of these patients. Pseudomonas aeruginosa; pyocin type 1 phage type F7 and .serotype 11 was the commonest isolate. It constituted 24,9

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