Search for dissertations about: "omental artery"

Showing result 1 - 5 of 8 swedish dissertations containing the words omental artery.

2. 1. Reactivity of human omental blood vessels. Effects of 5-hydroxytryptamine, substance P and the intravenous anaesthetic propofol

   Author : Susanna Wallerstedt; Anestesiologi och intensivvård; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; intensivvård; intensive care; Anaesthesiology; endothelium; calcium; human; hyperpolarization; K channels; nitric oxide; omental artery; omental vein; propofol; receptors; Anestesiologi; serotonin; sympathetic nervous system; substance P;

   Abstract : Regulation of blood flow involves several endogenous substances and mechanisms, and exogenous substances may also affect the blood flow. In the present thesis, human omental blood vessels were investigated in vitro concerning (i) characteristics of 5-hydroxytryptamine (5-HT) receptors; (ii) mediators of substance P (SP)-induced relaxation; (iii) direct and indirect (via effects on sympathetic neurotransmission) effects of the intravenous anaesthetic propofol. READ MORE

4. 2. Anaesthetics and the blood vessel wall. Actions of propofol and sevoflurane on sympathetic and endothelial control of smooth muscle function

   Author : Karin Thorlacius; Anestesiologi och intensivvård; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Anaesthesiology; intensive care; Anestesiologi; intensivvård; vein.; artery; endothelium; sympathetic nervous system; inhalation agent sevoflurane; Anaesthesia; intravenous propofol;

   Abstract : The anaesthetics we use today dose-dependently decrease the mean arterial pressure partly due to direct or indirect effects on the blood vessels. In the present thesis human omental arteries and veins and rat femoral arteries were investigated in vitro concerning the effects of the intravenous anaesthetic propofol and the volatile anaesthetic sevoflurane on the function of the perivascular sympathetic nerves and the endothelial cells. READ MORE

5. 3. A study of potassium channel activation as a pharmacological principle for vasodilation of cerebral blood vessels

   Author : Torsten Ryman; Avdelningen för klinisk kemi och farmakologi; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacological sciences; cerebral arteries; Cerebral ischemia; Potassium channel openers; vascular endothelium; EDHF; KRN2391; KATP; Pinacidil; pharmacognosy; pharmacy; toxicology; Farmakologi; farmakognosi; farmaci; toxikologi;

   Abstract : Increasing [K+]o is intimately coupled to progressive ischemia and reduced CBF. In isolated cerebral and mesenteric arteries, it was found that significant differences in the vascular responses to [K+]o exist. Among the species studied, human cerebral arteries were the most sensitive artery to increasing [K+]o. READ MORE

6. 4. Neuropeptide Y - aspects of vasomotorresponses and receptor characterization

   Author : Torun Nilsson-Bergdahl; Lund Medicin; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; vasoconstriction; RT-PCR; receptor characterization; potentiation; NPY Y1 receptor; NPY; mitogenesis; hypertension; human arteries; forearm blood flow; cell culture; antisense oligodeoxynucleotides; BIBP3226; vasodilatation.; Physiology; Fysiologi; Endocrinology; secreting systems; diabetology; Endokrinologi; sekretion; diabetologi;

   Abstract : Abstract The aims of the present thesis were to examine neuropeptide Y (NPY) responses in different human and guinea pig vascular beds and in cultured human vascular smooth muscle cells (VSMC) and to characterize, with different NPY agonists and the specific NPY Y1 receptor antagonist (BIBP3226), the NPY receptors involved. NPY-induced strong and potent contractions in human cerebral and subcutaneous arteries and in guinea pig basilar arteries. READ MORE

7. 5. Endothelin and endothelin receptors in human pregnancy and delivery

   Author : Kerstin Wolff; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Endothelin; endothelin receptor; human; pregnancy; preeclampsia; delivery;

   Abstract : Background: Endothelin-1 (ET-1) is a 21-amino acid peptide, first described by Yanagisawa et al in 1988. It is one of the most potent constrictors of smooth muscle cells identified to date. READ MORE