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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.
41

Competing processes of cell death and recovery of function following ischemic preconditioning in the gerbil /

Dooley, Paul James, January 1997 (has links)
Thesis (M.Sc.)--Memorial University of Newfoundland, Faculty of Medicine, 1997. / Typescript. Bibliography: leaves 57-78.
42

Do dendritic spines contribute to ischemic tolerance? /

Giles, Tina, January 2001 (has links)
Thesis (M.Sc.)--Memorial University of Newfoundland, Faculty of Medicine, 2001. / Typescript. Bibliography: leaves 45-60.
43

Changes in gene expression during delayed neuronal death after cerebral ischemia in the rat

Kamme, Fredrik. January 1998 (has links)
Thesis (doctoral)--Lund University, 1998. / Added t.p. with thesis statement inserted.
44

Terapia de restrição de membro superior não paretico e indução de movimento em pacientes hemipareticos / Constrain therapy in upper estremity not paretic and induced movement in hemiparetics patients

Sousa, Rodrigo Dantas de 21 February 2008 (has links)
Orientador: Donizeti Cesar Honorato / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas / Made available in DSpace on 2018-08-10T16:07:34Z (GMT). No. of bitstreams: 1 Sousa_RodrigoDantasde_M.pdf: 829191 bytes, checksum: f4f90d29ed7eee8c9f1d2e15d741c0ef (MD5) Previous issue date: 2008 / Resumo: A terapia de restrição e indução de movimento estão entre as formas de tratamento que mais desponta no mundo, por apresentar ótimos resultados funcionais. A baixa aderêcia ao tratamento tem sido alvo de discussão, logo seu protocolo tem sido modificado para minimizar esta problemtica. Neste trabalho a ténica foi adaptada e feita a avaliação da funcionalidade de todo o hemicorpo paréico. Foram selecionados 15 pacientes, dos quais permaneceram 10, de um fluxo méio de 100 pacientes/mês do Serviço de Fisioterapia e Terapia Ocupacional (SFTO) do Hospital de Clínicas (HC) da Universidade Estadual de Campinas (UNICAMP). Foram acompanhados 7 homens e 3 mulheres que já estavam em fisioterapia 2 vezes/semana, não apresentavam restrição da Amplitude de Movimento (ADM) do membro superior e com um único episódio de Acidente Vascular Encefálico (AVE). A imobilização foi feita através de um splint de posicionamento de punho, de mão e de dedos, durante 5 horas diárias, por dois períodos de 15 dias cada, com intervalo entre eles de 30 dias. Os pacientes foram avaliados pelas escalas de Fugl-Meyer Motor Assessment (FMA) e de Medida de Independência Funcional (MIF), no início e no final de cada período de imobilização. A análise estatística foi realizada através de médias, de variações e de variâncias; os modelos foram ajustados para a idade e tempo de lesão; as comparações foram feitas pelo coeficiente de Spearman; o nível de significância assumido foi o de =5%. Observou-se melhora da funcionalidade do hemicorpo parético, com significância estatística nas comparações entre as 3ª avaliações da MIF e da FMA-MMII (Membros Inferiores) (p=0,04) e entre as da MIF e da FMA-MMSS (Membros Superiores) (p=0,05). Pode-se concluir que 2 sessões de fisioterapia por semana, de 1 hora cada, mostraram-se benéficas. Os ganhos funcionais ocorreram em todo o hemicorpo parético e não apenas em membro superior parético / Abstract: The Constraint-Induced movement therapy is enters the forms of treatment that more blunts in the world, for presenting excellent functional results. Low the tack to the treatment has been target of quarrel, then its protocol has been modified to minimize this problematic one. In this work the technique was adapted and made the evaluation of the hemiparetic body 15 patients had been selected, of which they had remained 10, of an average flow of 100 patients/month of the Service of Physiotherapy and Occupational Therapy of the Hospital of Clinics of the State University of Campinas (UNICAMP). 7 men and 3 women had been attended who already were in physiotherapy 2 times/week, didn¿t present restriction of the movement articulation (ADM) of the upper extremity and with one episode of stroke. Immobilization was made through one splint of positioning of fist, hand and fingers, during 5 daily hours, for two periods of 15 days each, with interval between them of 30 days. The patients had been evaluated by the scales of Fugl-Meyer Motor Assessment (FMA) and Functional Independence Measure (FIM), at the beginning and in the end of each period of immobilization. The analysis statistics was carried through averages, variations and variances; the models had been adjusted for the age and time of injury; the comparisons had been made by the coefficient of Spearman; the assumed level of significance was of =5%. Improvement of the functionality of hemiparetic body was observed, with significance statistics in the comparisons between 3ª evaluations of the FIM and FMA-LE (Lower Extremity) (p=0,04) and enters of the FIM and FMA-UE (Upper Extremity) (p=0,05). It can be concluded that 2 sessions/week of physiotherapy, of 1 hour each, had revealed beneficial. The functional profits had occurred all in hemiparetic body and not only in upper paretic extremity / Mestrado / Ciencias Biomedicas / Doutor em Ciências Médicas
45

Doença cerebrovascular na infancia e adolescência : estudo das habilidades de processamento auditivo (central) / Cerebrovascular disease in children and adolescents : an auditory processing study

Elias, Karla Maria Ibraim da Freiria 12 December 2008 (has links)
Orientador: Maria Valeriana Leme de Moura-Ribeiro / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas / Made available in DSpace on 2018-08-12T13:23:03Z (GMT). No. of bitstreams: 1 Elias_KarlaMariaIbraimdaFreiria_D.pdf: 4108158 bytes, checksum: 2046ae2bbb7de3b3c5354d1752b098df (MD5) Previous issue date: 2008 / Resumo: Na infância e adolescência, a doença cerebrovascular (DCV) constitui condição rara, de etiologia variada, em que a evolução a curto e longo prazo tem merecido esclarecimentos. Em anos recentes, a clássica impressão de recuperação favorável após eventos vasculares nesta população tem sido esmaecida com a verificação de variáveis índices de alterações comportamentais, cognitivas, lingüísticas e de aprendizagem. No referente ao processamento das informações auditivas o conhecimento é ainda bastante restrito e, diante desta constatação, nos propusemos a realizar ampla investigação desta função, através da aplicação de testes de categorias diversas e estabelecer o grau de competência auditiva na dependência das características lesionais. Assim, o principal objetivo desde estudo, foi avaliar as habilidades de processamento auditivo (central) em crianças e adolescentes acometidos pela DCV, grupo propósito (GP), comparando-os, com grupo controle (GC), composto por crianças destras, de mesmo sexo, idade e nível sócio-econômico das crianças do GP. Na avaliação audiológica foram aplicados os seguintes testes: localização sonora em cinco direções, memória seqüencial verbal e não-verbal, na categoria de avaliação simplificada; teste de fala com ruído e de fala filtrada, na categoria dos monóticos de baixa redundância; dicótico não-verbal, consoante-vogal, dicótico de dígitos e dicótico de dissílabos alternados (staggered spondaic word test/SSW) na dos dicóticos; padrão de freqüência e de duração, na de testes de processamento temporal. Os dados foram analisados através de metodologia estatística pertinente - teste exato de Fisher e Wilcoxon - e revelaram que o desempenho dos grupos foi similar nos testes de localização sonora e fala com ruído. Nos demais testes, o GP apresentou desempenho significativamente inferior ao GC, com alterações nas habilidades auditivas de fechamento, memória, atenção seletiva e processamento temporal. Os testes de fala filtrada e de padrão de duração foram, respectivamente, mais sensíveis que os testes de fala com ruído e padrão de freqüência, na identificação de alterações nas habilidades de fechamento auditivo e de ordenação temporal. Adicionalmente, a presença da lesão e não suas características foram determinantes para a definição do grau da competência auditiva. Através do presente estudo, pudemos ampliar o conhecimento evolutivo da DCV infantil ao demonstrar comprometimento em habilidades específicas de processamento auditivo. / Abstract: In childhood and adolescence the cerebrovascular disease (CVD) is a rare condition, of varied etiology, where the clarification of short and long term disease progression has been sought. The classical idea of favorable recovery following vascular events in this population has been obscured by the demonstration of variable levels of behavioral, cognitive, linguistic and learning variables. There is scarce knowledge on the processing of auditory information, therefore we have decided to perform a thorough investigation on this function by conducting tests of several categories, and to establish the degree of audiological competence that depends on the lesion characteristics. Therefore, the main purpose of the present study was the assessment of the central auditory processing abilities in children and adolescents suffering from CVD, purpose group (PG), which was compared to the control group (CG) formed by right-handed children, of the same sex, age and socioeconomic level as of the children of the PG. In audiological assessment the following tests were applied: sound location in five directions, verbal and non-verbal sequential memory, in the simplified category evaluation; test of speech in noise and filtered speech in the category of low redundancy monotics; non-verbal dichotic, consonant-vowel, dichotic digit and staggered spondaic word test/SSW in the dichotic category; frequency and duration pattern, in the temporal processing tests. The data were analyzed through the pertinent statistical methodology - Wilcoxon and Fisher's exact test - and revealed that the GP's performance was similar to the GC's in the sound location and speech in noise tests. In the other tests, the CVD group showed a significantly lower performance than the normal children, with alterations in auditory closure abilities, memory, selective attention and temporal processing. The tests of filtered speech and duration pattern were respectively more sensitive than the tests of speech in noise and frequency pattern, in the identification of alterations in auditory closure and temporal ordering. In this study the presence of lesion rather than its characteristics was decisive for the definition of the degree of audiological competence. We have increased our knowledge of progression of CVD in children by demonstrating the implications of this condition in specific abilities of auditory processing. / Doutorado / Ciencias Biomedicas / Doutor em Ciências Médicas
46

Avaliação das alterações da substância branca e cinzenta cerebral nos pacientes com doença carotídea assintomática / Evaluation of brain white and gray matter in patients with asymptomatic carotid disease

Avelar, Wagner Mauad, 1976- 21 August 2018 (has links)
Orientador: Fernando Cendes / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas / Made available in DSpace on 2018-08-21T23:12:40Z (GMT). No. of bitstreams: 1 Avelar_WagnerMauad_D.pdf: 2966468 bytes, checksum: ae195d956adfc06599ce07aa216dbfcd (MD5) Previous issue date: 2013 / Resumo: A prevalência da estenose carotídea assintomática (>50%) aumenta com a idade, sendo 10% nos homens acima de 80 anos. A conduta, nesses pacientes, quanto ao tratamento clínico ou correção por angioplastia ou endarterectomia ainda gera discussões. Os primeiros estudos com endarterectomia indicavam um benefício em diminuir o risco de evento cerebrovascular em 5 anos. Com a melhora do tratamento clínico, em que o risco absoluto caiu de 2,5 em meados da década de 80 para 1% ano, a correção de tais estenoses se tornou motivo de discórdia, visto que existe um risco de 2,5% para angioplastia e 1,4% para endarterectomia, como mostrado no estudo CREST, publicado em 2010. Portanto, o uso indiscriminado do procedimento não parece justificado nesse grupo de pacientes. Desta forma, o procedimento cirúrgico somente é recomendado em pacientes selecionados com base na idade, fatores de risco, expectativa de vida e risco peri-procedimento. Entretanto, há estudos que evidenciaram declínio cognitivo em pacientes com estenoses assintomáticas >70%, os quais tiveram melhora após a angioplastia, além de casos de distúrbios do movimento, em especial hemicoreia, os quais reverteram após correção da mesma. Nosso trabalho avaliou 25 pacientes com estenose de carótida/oclusão, assintomáticos quanto às possíveis alterações de substância branca e cinzenta. A estenose/oclusão foi definida pela angiotomografia e então todos os pacientes foram submetidos à ressonância magnética de encéfalo e as imagens foram analisadas através do método de morfometria baseada em voxel (VMB) e através de imagens de tensor de difusão (DTI). Para comparação estatística, usamos imagens de 25 indivíduos saudáveis, pareados por idade. Neste estudo, ambas as análises, de VBM e DTI, demonstraram anormalidades significativas da substância branca quando comparado com ao grupo controle. Tais achados foram difusos e simétricos em ambos os hemisférios (ipsilateral e contralateral a estenose). Diferentemente, a análise de VBM da substância cinzenta demonstrou assimetria da atrofia, predominantemente em áreas correspondendo a circulação anterior do hemisfério ipsilateral à estenose. Nossos achados sugerem que as estenoses/oclusões carotídeas assintomáticas estão associadas a alterações (atrofia) da substância cinzenta do hemisfério ipsilateral à estenose. Esse achado está em concordância com os dados prévios da literatura, como a existência de declínio cognitivo e os distúrbios de movimento, uma vez que estabelece uma associação entre estenose carotídea e perda de substância cinzenta, provavelmente secundária à alteração hemodinâmica. É o primeiro trabalho que pode justificar tais achados / Abstract: The prevalence of asymptomatic carotid stenosis (>50%) increases with age, affecting 10% of men 80 years or older. However there is still no consensus whether clinical, angioplasty or endarterectomy is the best therapeutic option. In earlier studies, endarterectomy showed a benefit in reducing the risk of event in 5 years. The advances in medical treatment though, decreased the absolute risk of stroke to 1% per year and surgical treatment was put in check, since both angioplasty and endarterectomy carry a stroke risk of 2,5 and 1,4 % respectively, as shown in the CREST study. Therefore, the indiscriminate use of the procedure does not seem justified in this group of patients and it should only be recommended in selected patients based on age, risk factors, life expectancy and the risks associated with the procedure. However, studies have demonstrated cognitive decline in patients with asymptomatic carotid stenosis >70%, which showed improvement after angioplasty, and case reports described patients with hemichorea contralateral to the stenosis, which reversed after the surgical procedure. We studied the white and grey matter changes in 25 patients with asymptomatic carotid stenosis/occlusion. The stenosis/occlusion was defined by angiography and all patients underwent brain MRI. Images were analyzed by the method of voxel-based morphometry (VBM) and through diffusion tensor images. Our control group involved 25 healthy subjects, matched for sex and age. We found that both DTI and VBM analyze showed significant abnormalities of white matter compared to controls, and these findings were diffuse and symmetrical in both hemispheres (ipsilateral and contralateral stenosis). Unlike DTI, the VBM analysis showed gray matter atrophy predominantly in areas corresponding to the anterior circulation in the hemisphere ipsilateral to the stenosis. Our findings suggest that the stenosis/occlusion is associated with asymptomatic alterations (atrophy) of the gray matter in the hemisphere ipsilateral to the stenosis. This finding is in agreement with previous clinical data in the literature, such as the existence of cognitive decline and movement disorders, since it establishes an association between carotid stenosis and loss of gray mater, probably secondary to hemodynamic changes / Doutorado / Neurociencias / Doutor em Fisiopatologia Medica
47

Avaliação da capacidade funcional e da qualidade de vida de individuos com acidente vascular encefalico com idade maior ou igual a 55 anos

Cruz, Keila Cristianne Trindade da, 1973- 13 December 2004 (has links)
Orientador: Maria Jose D'Elboux Diogo / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas / Made available in DSpace on 2018-08-04T03:53:17Z (GMT). No. of bitstreams: 1 Cruz_KeilaCristianneTrindadeda_M.pdf: 6683163 bytes, checksum: e8b7f9d1715e198baeee350f52046006 (MD5) Previous issue date: 2005 / Resumo: o Acidente Vascular Encefálico (AVE) é uma das principais doenças crônicas incapacitantes, com seqüelas que levam à dependência e perda da autonomia das pessoas. O objetivo geral desse estudo foi avaliar a capacidade funcional e a qualidade de vida de indivíduos com idade maior ou igual a 55 anos acometidos por AVE e como objetivos específicos identificar correlações entre capacidade funcional e qualidade de vida desses sujeitos, avaliar a relação entre as variáveis sociodemográficas, clínico/terapêuticas e a capacidade funcional e entre essas variáveis e a qualidade de vida. Foram realizadas entrevistas e colhidos dados referentes aos aspectos sociodemográficos e de saúde, da Medida de Independência Funcional (MIF) e do "The Medical Outcomes Study 36-item shortform health survey" (SF-36). Dos 44 pacientes entrevistados, predominou a faixa etária entre 60 e 69 anos. Um total de 42 pacientes apresentou seqüelas decorrentes do AVE. Verificamos que os indivíduos com acesso ao serviço de saúde apresentaram valores da MIF superiores aos indivíduos que não tinham esse acesso. A MIFt sofreu influência da idade, da presença de cuidador e da hemiparesia. Dentre as médias das dimensões do SF-36 a capacidade funcional (CF) apresentou o menor escore. Aqueles sujeitos que possuíam acesso ao serviço de saúde apresentaram média da CF maior que aqueles que não tinham acesso. Ao compararmos as dimensões do SF-36 e as domínios da MIF, observamos que houve uma correlação positiva de forte magnitude entre a dimensão CF e os domínios da MIF. Há correlação entre o nível de independência funcional e qualidade de vida e a hemiparesia; o aumento da idade, a falta de acesso a reabilitação e a presença de cuidador influenciaram negativamente as medidas de capacidade funcional e qualidade de vida. As seqüelas provocadas pelo AVE causam prejuízo na autonomia e na independência dos sujeitos interferindo em sua capacidade funcional e, conseqüentemente, em sua qualidade de vida / Abstract: The stroke is considered one of the main chronic diseases, whose sequels lead to people's dependence and loss of their autonomy. The general objective of the study was to evaluate the functional capability and the quality of life of stroke survivors with more than 55 years and as specific objectives to identify correlations between functional capacity and quality of life of those subjects, toevaluate the relationship between social-demographic variables, clínical and therapeutic and the functional capacity and the life quality. Data were obtained from interviews with outpatients in the rehabilitation program and medical accomplished and, home care, using the Functional Independence Measure (FIM) and The Medical Outcomes Study 36-item shorts-form health survey (SF-36). From 44 patients interviewed, predominantly aged between 60 and 69 years, a total of 42 patients presented sequels from stroke. People who had access to the health service presented values of FIM superior than those who didn't have access. The FIM score was ínfluenced byage, caregivers' presence and hemiparesis. Among the averages of the dimensions of SF-36 the functional capability presented the smallest score. People who had access to health services presented high average in the functional capability dimensions than those who didn't have access. If it's compared the dimensions of SF-36 and the domains of FIM, we observed that there was a positive correlation of strong magnitude among the dimension functional capability and the domains of FIM. There is correlation between the levei of functional independence and life quality and the hemiparesis; the increase of age, the lack of to access rehabilitation or caregivers' presence influenced the measures of functional capacity and life quality negatively. The study verified that the sequels provoked by stroke caused damage in the autonomy and in the independence of the subjects interfering whith their functional capability and, consequently, in their quality of life / Mestrado / Enfermagem e Trabalho / Mestre em Enfermagem
48

The developmental motor outcomes of infants with hypoxic ischaemic encephalopathy II and III between the ages of 12-14 months at Chris Hani Baragwanath academic hospital

Sukha, Neelam January 2013 (has links)
A research report submitted to the Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, in partial fulfilment of the requirements for the degree of Master of Science in Occupational Therapy. Johannesburg, 2013 / This study determined outcomes for motor developmental delay in infants, 12-14 months, diagnosed with HIE II and III, at Chris Hani Baragwanath Academic Hospital. Twenty nine infants diagnosed with HIE II and nine infants diagnosed with HIE III were assessed using the Peabody Development Motor Scale- 2, at their corrected age. Demographic, antenatal and perinatal factors similar to those in other studies were found for this sample. Infants with HIE III had significantly more developmental delay (p=0.01) than infants with HIE II. Fifty two percent of infants with HIE II had no delay while a 100% of infants with HIE III presented with disability. A greater percentage of infants had delay in fine motor skills. Infants with severe and moderate disabilities were receiving intervention whereas those mild disabilities were often missed in screening clinics. It is vital to ensure these infants are assessed and followed up to remediate difficulties as soon as they arise.
49

Hyperglycemia in Experimental Cerebral Ischemia

Molnar, Maria January 2015 (has links)
Cerebral ischemia is a life-threatening condition associated with a substantial morbidity and mortality. Hyperglycemia, a common coexisting phenomenon in both stroke and cardiac arrest (CA), may further aggravate ischemic brain injury. To date, the therapeutic possibilities are lim-ited and the search for new treatment modalities is warranted. One aspect of such a research could be to better understand the cerebral pathogenesis induced by hyperglycemic ischemia-reperfusion. We investigated the combination of ischemia and hyperglycemia in two experimental models of stroke and CA. The aims were to test the neuroprotective potential of the sulfonated nitrone 2-sulfophenyl-N-tert-butylnitrone (S-PBN) in focal hyperglycemic cerebral ischemia (1), to outline the short-terms effects of hyperglycemia in prolonged (2) and short CA (3) and to performed a global transcriptome analysis of brain from hyperglycemic and normoglycemic CA (4). In a stroke model rats were made hyperglycemic prior to transient middle cerebral artery oc-clusion and randomized to S-PBN or saline. We found that S-PBN may ameliorate hyperglyce-mic-ischemic brain damage by improving the neurological performance after 1 day of survival, but did not reduce the infarct size. To study the cerebral oxidative state and perfusion after CA, pigs were randomized and clamped at blood glucose levels of 8.5 ̶ 10.0 mmol/L (high) and 4.0 ̶ 5.5 mmol/L (normal), sub-jected to 12 ̶ min of CA, followed by 8 min of cardiopulmonary resuscitation (CPR), and ob-served for 180 min. Increased oxygenation was found at higher glucose levels measured by near-infrared light spec-troscopy after CA. Tendencies toward increased protein S100β and 15-keto-dihydro-prostaglandin F2α were observed in the hyperglycemic group. We hypothesized that in combination with a brief period of CA, the preischemic hyperglycemia would worsen the cerebral injury compared with normoglycemia. We used a glycemic protocol similar to that in Paper II, whereby pigs were subjected to 5 ̶ min of CA, followed by 8 min of CPR, and observed for 180 mins. An increased level of the cerebral marker S100β was found in hyperglycemic pigs compared with normoglycemic pigs after CA. Global transcriptome analysis using microarray analysis revealed a different early metabolic gene expression in hyperglycemic CA compared with normoglycemic CA.
50

Signal transduction in focal cerebral ischemia : experimental studies on VEGF, MAPK and Src family kinases /

Lennmyr, Fredrik, January 2002 (has links)
Diss. (sammanfattning) Uppsala : Univ., 2002. / Härtill 4 uppsatser.

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