The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In vitro and in vivo studies demonstrated that nociceptin/orphanin FQ inhibits norepinephrine release, while the effects of norepinephrine on nociceptin/orphanin FQ release remain unknown. Previous studies in healthy and hypertensive subjects showed that prolonged and forced hyperventilation induces different blood pressure (BP) responses depending on changes in plasma catecholamine levels. We investigated...
The aim of our study was to evaluate the effects of repeated episodes of angina and induced myocardial ischemia on plasma nociceptin/orphanin FQ (N/OFQ) levels. Patients with unstable angina (23 with new onset severe angina or accelerated angina and 18 with subacute angina at rest) who had had repeated spontaneous episodes of chest pain in the last week before the study underwent myocardial perfusion...
This study investigated plasma brain natriuretic peptide (BNP) levels in normotensive and hypertensive patients with suspected coronary artery disease during radionuclide pharmacological stress testing. Twenty-seven normotensive patients (15 males, aged 63.0±4.5 years and 12 females, aged 63.0±4.1 years) and 38 essential hypertensive patients (25 males, aged 63.3±3.3 years and 13 females, aged 64...
We studied circulating levels of endothelin-1, catecholamines and nitric oxide after a mental arithmetic test in 14 patients with early ischemic lesions of the extremities due to systemic sclerosis and slightly impaired peripheral vascular flow. The test induced an increase (P<0.01) in blood pressure, heart rate, endothelin-1 and catecholamine levels, whereas it did not change the low basal levels...
Twelve patients with chronic critical limb ischemia in whom a spinal cord stimulation (SCS) system had been implanted for at least one year had increased microvascular flow and achieved healing of trophic acral lesions. After switching off the system, the clinical improvement persisted for 10 days and the neurohormonal pattern showed high plasma values of β-endorphin and Met-enkephalin, normal dynorphin...
After hyperventilation, systolic and diastolic blood pressure (BP) significantly decreased in 14 hypertensive patients (group 1), did not change in 9 (group 2) and increased in 8 (group 3). Basal BP, norepinephrine and dynorphin B levels were higher in group 1 than in groups 2 and 3. The decrease in BP after hyperventilation was associated with a decrease in plasma norepinephrine, Met-enkephalin and...
Plasma opioid peptides, norepinephrine, atrial natriuretic factor (ANF) and blood pressure (BP) were assessed in 24 chronic obstructive pulmonary disease patients with acute respiratory failure. Hypoxemic-hypercapnic patients had high BP, β-endorphin, Met-enkephalin and dynorphin B, whereas hypoxemic-normocapnic and hypoxemic-hypocapnic patients showed normal BP, high β-endorphin, and normal Met-enkephalin...
After hyperventilation, systolic blood pressure (SBP) significantly decreased in 10 subjects (group 1), did not change in eight (group 2) and increased in 15 (group 3). Diastolic blood pressure and heart rate increased in all groups. The decrease in SBP was associated with a decrease in plasma catecholamines and increase in β-endorphin, whereas the increase in SBP was accompanied by an increase in...
Fontana, F., P. Bernardi, E. Merlo Pich, S. Boschi, R. De Iasio and S. Spampinato. Endogenous opioid peptides and mental stress in congestive heart failure patients. Peptides 19(1) 21-26, 1998.-Two groups of patients with acute congestive heart failure (CHF), New York Heart Association class III, presenting elevated plasma values of β-endorphin, norepinephrine, atrial natriuretic factor (ANF) and...
Fontana, F., P. Bernardi, E. Merlo Pich, S. Boschi, R. De Iasio, S. Spampinato and G. Grossi. Opioid peptide modulation of circulatory and endocrine response to mental stress in humans. Peptides 18(2) 169–175, 1997.—Healthy subjects were classified according to their percent increase in systolic blood pressure (SBP) after mental arithmetic test (MAT) as low (ΔSBP 9.3–15.1%, n = 15) and high (ΔSBP...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.