Thesis (M.S.)--University of Michigan, 1981. / eContent provider-neutral record in process. Description based on print version record.

Thesis (M.S.)--University of Michigan, 1983. / eContent provider-neutral record in process. Description based on print version record.

Thesis (M.S.)--University of Michigan, 1981.

Thesis (M.S.)--University of Michigan, 1983. / eContent provider-neutral record in process. Description based on print version record.

Thesis (M.S.)--University of Michigan, 1981.

Thesis (M.S.)--University of Michigan, 1981.

Thesis (M.S.)--University of Michigan, 1987.

Orientador: Maria Valeriana Leme de Moura Ribeiro / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas / Made available in DSpace on 2018-08-21T12:23:12Z (GMT). No. of bitstreams: 1 Airoldi_MarinaJunqueira_M.pdf: 5702275 bytes, checksum: 3c2bd8bd99c4abe1bd021c54e7de91e9 (MD5) Previous issue date: 2012 / Resumo: Objetivos: O Objetivo deste estudo foi descrever apresentação clínica da doença, a evolução neuromotora, assim como a epilepsia. Métodos: Foram incluídas no estudo 18 crianças nascidas a termo. A avaliação ocorreu nas idades entre 6 e 16 anos utilizando se o teste EB Teste. O estudo foi retrospectivo quanto aos dados relacionados a antecedentes, diagnóstico do AVC e evolução quanto à epilepsia e transversal quanto à avaliação neuromotora. Resultados: Das 18 crianças estudadas, 4 (22%) foram diagnosticadas com AVCI depois dos 3 meses de idade, principalmente pelos sinais de assimetria; 14 crianças (77%) foram diagnosticadas na fase aguda, sendo que 11 (79%) apresentaram convulsões, 5 (36%), hipotonia e 3 (21%) sucção débil. Na evolução das 18 crianças, 11 (61%) desenvolveram epilepsia. As crianças que tiveram crises na fase aguda apresentaram probabilidade significativamente maior de evoluir com epilepsia (p <0.05). Em relação à neuroimagem, 17 indivíduos apresentaram comprometimento na Artéria Cerebral Média, com acometimento do hemisfério esquerdo em 13. Foram diagnosticadas com Paralisia Cerebral com hemiparesia 16 crianças. Em relação à escala neuromotora aplicada, EB teste, todas as crianças avaliadas apresentaram déficit em todas as dimensões estudadas. Crianças com lesões mais extensas apresentaram pior desempenho motor. Não houve recorrência do AVC. Conclusão: É importante identificar sintomas e sinais na fase aguda, permitindo que profissionais confirmem com imagem o comprometimento vascular no período perinatal. É necessário valorizar acompanhamento ambulatorial, identificando anormalidades neuromotoras e epilepsia na evolução, promovendo tratamento adequado para melhora da qualidade de vida destas crianças / Abstract: Objectives: The aim of this study was to describe clinical presentations, neurodevelopmental and epilepsy outcomes of IPS in children. Methods: A retrospective study was conducted in a children population and it was evaluated term infants ! 38 weeks gestational age, aged between 6 and 16 years, with diagnosis of IPS. The diagnosis was confirmed in 18 cases by Neuroradiology (CT or MRI). We studied the neuroimaging and data from acute phase as well as the evolution of these children through neuromotor scale IB Test. Results: In 18 cases, 4 (22%) was diagnosed with brain infarction after 3 months of age, especially for signs of asymmetry. Of the 14 remaining patients (77%) diagnosed early, 11(79%) had seizures, 5 (36%) had hypotonia and 3 (21%) had signs of low suction. In the group of 18, 11 (61%) evolved with epilepsy and children with seizures in the acute phase were more likely to develop epilepsy (p <0.05). Large cortically based infarcts were the most common pattern and, in 17 cases, it affected the middle cerebral artery territory involving the left size in 13. 16 children were diagnosed with cerebral palsy hemiparetic. In neuromotor scale applied, IB Test, all children presented deficit in all dimensions studied. Children with more extensive lesions had worse motor performance. There was no recurrence of stroke. Conclusion: It is important to understand symptoms and signs of acute allowing professionals to carry out identification of vascular involvement in the perinatal period. It is necessary to enhance outpatient identifying neuromotor abnormalities and epilepsy in the evolution promoting appropriate treatment to improve quality of life for these child / Mestrado / Ciencias Biomedicas / Mestre em Ciências Médicas

Objective: Unknown ethiology Background: Capnocytophaga ochracea is a gram-negative anaerobic organism commonly found in human oral flora. It is characteristically sensitive to beta-lactams and resistant to aminoglycosides. Case Report: A 23-year-old woman presented with lower abdominal pain and was admitted for premature labor at 24-weeks of gestation. At presentation, the cervix was closed and the membrane was intact; however, contractions continued, the membrane subsequently ruptured before receiving any steroids or magnesium, and the mother gave birth to a 540-gram female baby. At birth, Apgar scores were 1 at 5 minutes, 1 at 10 minutes, and 2 at 15 minutes. On the fifth day of life, the blood culture grew Capnocytophaga species. Consequently, Cefotaxime was started and ampicillin continued for a total of 14 days; however, on the 6th day, the head ultrasound showed grade 4 intraventricular hemorrhage and a Do Not Resuscitate (DNR) order was placed in the chart. The patient's health continued to deteriorate, having multiple episodes of bradycardia and desaturation until cardiac arrest on the 17th day. Conclusions: Capnocytophaga ochracea was isolated from the blood culture of a preterm neonate. It was thought to be the cause of the premature labor and subsequent neonatal septicemia. This case report suggests that the prevalence of Capnocytophaga infections is most likely underestimated and that additional premature labors and abortions could have been caused by Capnocytophaga infections that were never detected. Hence, more studies are needed to investigate the route of transmission.

Digoxin, a steroidal glycoside that inhibits Na⁺/K⁺-ATPase, is the most commonly prescribed cardiac medication in North America. Blood levels of this drug are routinely measured to reduce the risks of toxicity. Reports questioning the specificity of antisera used in radioimmunoassays for serum digoxin measurements began to appear after 1975¹ when plasma from patients with renal failure, not on glycoside therapy, showed false-positive digoxin levels. Since then, digoxin-like immunoreactive substances (DLIS) have been found in sera from patients with hepatic failure, hypertension, pre-eclampsia, in amniotic fluid and cord blood. Some of the highest values for DLIS have been detected in premature infants, where levels have often exceeded the therapeutic range (0.2-2.0 µg/L) for digoxin. Cord blood has been identified as a rich source of DLIS. Dahl et al² were the first to suggest that a circulating saluretic substance "endoxin", may cause hypertension in salt sensitive rats. Gruber et al³ reported on the existence of digoxin-like factor(s) in the plasma of volume-expanded dogs. Plasma from these dogs inhibited Na⁺/K⁺ATPase activity. A number of other studies have supported the concept that such digoxin-like factors may be of etiological significance in hypertension⁴. In view of these observations, a study was undertaken to isolate and fractionate DLIS from mixed cord blood and determine whether or not any of this digoxin-like material possessed Na⁺/K⁺-ATPase inhibitory properties. Cord blood collected in the Grace Hospital Maternity Unit (Vancouver, BC), was pooled and DLIS extracted using C₁₈,R-Sep Paks. Extracts were resolved by high performance liquid chromatography (HPLC) into several fractions containing digoxin equivalent immunoactivity as measured by radioimmunoassay (RIA). A number of steroids and bile acids (dehydroepi-androsterone-sulfate, cortisone, Cortisol, deoxycortisone, ∆⁴androstene-dione, progesterone and glycochenodeoxycholic acid) cross-reacted with digoxin antisera and had HPLC retention times similar to DLIS-containing fractions. The ability of HPLC generated DLIS positive cord blood fractions to inhibit Na⁺/K⁺-ATPase activity was determined in three different assay systems; red cell ⁸⁶Rb uptake canine kidney-Na⁺/K⁺-ATPase and red cell membrane-Na⁺/K⁺-ATPase. At least six fractions contained DLIS and inhibited Na⁺/K⁺-ATPase activity. Inhibition varied with the assay system used but none of the fractions inhibited ⁸⁶Rb uptake by erythocytes. One fraction (which eluted at 29 minutes) contained progesterone; 72% of the inhibitory activity present in this fraction was attributable to this steroid. Another inhibitory fraction co-eluted with dehydroepiandrosterone-sulfate (DHEAS-S). The only fractions found to inhibit both the red cell membrane and canine kidney Na⁺ /K⁺-ATPase enzymes eluted at 7 and 29 minutes. In summary, a number of digoxin-like immunoreactive substances were isolated from cord blood by HPLC fractionation and found to inhibit Na⁺/K⁺-ATPase activity. Inhibition varied with the assay system used. There was no apparent correlation between inhibition and digoxin immunoreactivity. Very large quantities (500 mL) of cord blood were extracted to demonstrate these properties. It remains to be determined whether or not DLIS isolated during the perinatal period is of physiological significance. / Medicine, Faculty of / Pathology and Laboratory Medicine, Department of / Graduate