Sökning: "adrenoceptors"

Visar resultat 16 - 20 av 36 avhandlingar innehållade ordet adrenoceptors.

  1. 16. Adrenergic Receptors Regulating cAMP Generation and Thermogenesis in Isolated Brown Adipocytes

    Författare :Jin Zhao; Roger J. Summers; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES; NATURVETENSKAP; zoofysiologi; Zoological physiology;

    Sammanfattning : Adrenoceptors are the functional receptors in brown adipocytes. In the present study, the second messenger cAMP - and thermogenesis (which is an index of the energy metabolism of brown adipocytes) - were measured in order to reveal the intricate mechanism of effects generated by various adrenoceptor interactions with agonists and antagonists on brown adipocytes from hamster, mouse and rat. LÄS MER

  3. 17. Adrenergic control of small intestinal motility and blood flow : an experimental study in rat and man

    Författare :Mikael Thollander; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :clonidine; computerized recording; intestinal blood flow; isoprenaline; laser Doppler flownretry; manometry; migrating motor complex; oxymetazoline; propranolol; small intestine;

    Sammanfattning : Small intestinal motility in the fasted state is characterized by migrating motor complexes (MMCs). Both animals and man exhibit the MMC, which consists of periods of regular contractions, i.e. activity fronts, that migrate along the length of the small bowel and alternate with periods of quiescence. LÄS MER

  4. 18. Calcium Responses in the Renal Afferent Arteriole to Angiotensin II and Norepinephrine Stimulation

    Författare :Mark Kornfeld; Klinisk neurofysiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; norepinephrine; angiotensin II; smooth muscle cells; afferent arteriole; calcium; Kidney; renal hemodynamics; Physiology; Fysiologi;

    Sammanfattning : Studies were performed to investigate the influence of the vasoconstrictors angiotensin II (AII) and norepinephrine (NE) on calcium metabolism in smooth muscle cells of afferent arterioles. Fura-2 and image analysis techniques were used to evaluate calcium responses in the proximal and distal parts of afferent arterioles with attached glomeruli. LÄS MER

  5. 19. Discovery of N-hydroxyguanidines as novel electron acceptors of xanthine oxidase : Potential new drugs for treatment of ischemia and reperfusion injury

    Författare :Maija Dambrova; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical biosciences; xanthine oxidase; N-hydroxyguanidine derivatives; ischemia and reperfusion; reduction; inhibition; superoxide; Farmaceutisk biovetenskap; Biopharmacy; Biofarmaci; galenisk farmaci; Pharmaceutics;

    Sammanfattning : Xanthine oxidase (EC 1.1.3.22) is one of the major enzymatic sources of oxygen-derived free radicals. LÄS MER

  7. 20. Cardiac electrophysiologic effects of mental stress

    Författare :Per Insulander; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Background: Mental stress may trigger serious arrhythmias. Mental stress tests cause significant increases in heart rate, blood pressure and cardiac output. When beta-adrenergic inhibition is considered for secondary antiarrhythmic prophylaxis beta1 selective agents are often preferred because of less adverse reactions. LÄS MER