Sökning: "Kardiovaskulära systemet"

Visar resultat 6 - 10 av 88 avhandlingar innehållade orden Kardiovaskulära systemet.

1. 6. Expression and Regulation of P2 Receptors in Human Circulation

   Författare :Lingwei Wang; Sektion II; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Western blotting; Cardiovascular system; Kardiovaskulära systemet; vascular remodeling; systemic lupus erythematosus; smooth muscle cell; shear stress; real-time PCR; platelets; P2 receptor; gene expression; erythrocyte; ATP release; endothelium;

   Sammanfattning : P2 receptors mediate the actions of the extracellular nucleotides ATP, ADP, UTP and UDP regulating several physiological responses including cardiac function, vascular tone, smooth muscle cell (SMC) proliferation, platelet aggregation, and the release of endothelial factors. The aim of the present study was to investigate the mRNA and protein expression of P2 receptors in human SMCs, endothelial cells (ECs), erythrocytes and platelets, the regulation of P2 receptors under shear stress in human vessels, the changes of platelet P2 receptors in patients with systemic lupus erythematosus (SLE) and the regulation of plasma ATP levels by P2 receptor on erythrocytes. LÄS MER

3. 7. On cardiovascular responses to hypovolemic circulatory stress. An experimental study in man

   Författare :Henrik Olsen; Helsingborg Kliniska Vetenskaper; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; diabetology; secreting systems; Endocrinology; vein.; type 1 diabetes; skeletal muscle; LBNP; compliance; CFC; Ageing; baroreceptor; Endokrinologi; sekretion; diabetologi; Cardiovascular system; Kardiovaskulära systemet;

   Sammanfattning : Aged subjects have a decreased tolerance to hypovolemia, which could contribute to their increased cardiovascular morbidity. One possible etiological factor might be an age-related reduction in the efficiency of the baroreceptor reflex axis. LÄS MER

4. 8. Novel functions of cardiovascular P2 receptors

   Författare :Anna-Karin Wihlborg; Kardiologi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cardiovascular system; Kardiovaskulära systemet; mRNA; EDHF; UTP; UDP; ADP; ATP; P2 receptor; contraction; dilatation; endothelial cells; Heart; VSMC;

   Sammanfattning : The aim of the thesis was to examine the expression and function of the extracellular nucleotide P2 receptors in the cardiovascular system. In the cardiovascular system nucleotides are released during shear stress, hypoxia, ischemia, from endothelial cells, smooth muscle cells, aggregating platelets, inflammatory cells and erythrocytes. LÄS MER

5. 9. Endothelium-derived Vasoactive Factors and Leukocyte-derived Inflammatory Mediators. Studies in subjects with or at risk for vascular disease

   Författare :Anwaar M Ibrahim; Malmö Institutionen för kliniska vetenskaper; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Prostacyclin.; Postmenopausal hormone replacement therapy; Nitric oxide; Endothelin; Diabetes mellitus; Cytokines; Cholesterol; Atherosclerosis; Cerebral ischemia; Cardiovascular system; Kardiovaskulära systemet;

   Sammanfattning : This study was undertaken to evaluate relationships between endothelial function (assessed as mediators of endothelium-derived vasoactive factors such as nitric oxide [NO], prostacyclin [PGI2] and endothelin [ET-1] ), and risk factors for atherosclerosis, as well as to study possible relationships between endothelial function and leukocyte activation (indicated by measurements of leukocyte-derived inflammatory mediators) in subjects with or at risk for atherosclerosis. In subjects with asymptomatic atherosclerosis we found inverse relationships between cyclic guanosine monophosphate (cGMP) in platelets (mediator of NO activity) and both serum total cholesterol and plasma ET-1 suggesting that NO-mediated vasodilation may be impaired in hypercholesterolemia and that maintenance of vascular tone is achieved by a balance between NO and ET-1. LÄS MER

7. 10. Tumor Necrosis Factor-alpha as a target cytokine in vascular disease

   Författare :Lena Brånén; Malmö Institutionen för kliniska vetenskaper; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; apoptosis; cell replication; Cardiovascular system; Kardiovaskulära systemet; spindle-shaped; epithelioid; smooth muscle cells; periadventitial cuff injury; sTNF-R1; bone marrow transplantation; chimeric fusion protein; atherogenic diet; ApoE; TNF-a; genetically altered mice; en face preparation; atherosclerosis; neointimal hyperplasia;

   Sammanfattning : Inflammation plays an important role in atherosclerosis. One of the most potent pro-inflammatory cytokines is tumor necrosis factor-alpha (TNF-a), a cytokine identified to have a pathogenic role in chronic inflammatory diseases such as rheumatoid arthritis (RA). LÄS MER