Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0085580 (essential hypertension)
 14,686 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The beta blocking agents are valuable drugs in cardiology. They are effective in any fast arrhythmia. Together with nitroglycerin, beta blockers are drugs of first choice in angina. As antihypertensives, they have advantages that should make them drugs of first choice. For migraine the beta blockers are equal to any other type of drug. With more study their place in treating anxiety will be clarified. And without question other uses will be found. It is difficult for this author to understand the attitude of the FDA to this class of drugs. To limit the American physician to only one drug in this large group of drugs is unheard of. Although it can be argued that propranolol is the best one, there are obvious cases where another drug would be better. For example, propranolol induces nightmares in a few patients. There is evidence to show that timolol does this less frequently. FDA delay in approval of propranolol for essential hypertension is totally incomprehensible. Other approved drugs are less effective and much more toxic. Propranolol, and the other beta blockers, are safe and effective. The adverse beta effects are easily controlled or avoided. The other adverse effects are no more frequent than with any other class of drugs, and all are reversible. It is to be hoped that science and common sense will prevail over bureaucratic indecision.
 ...
PMID:Present state of alpha and beta adrenergic drugs III. Beta blocking agents. 1 53

The literature on the use of biofeedback and various forms of relaxation training in the treatment of psychophysiological disorders was reviewed; special attention was devoted to studies in which biofeedback and some form of relaxation training were compared. Based on this review, we conclude that there is no consistent advantage for one form of treatment over the other with any psychophysiological disorder for which a comparison has been made, e.g., essential hypertension, migraine headaches, premature ventricular contractions, tension headaches, temporomandibular joint pain, asthma, primary dysmenorrhea, and functional diarrhea. For other disorders in which no comparisons have been made (e.g., Raynaud's disease, sinus tachycardia, peptic uclers, and fecal incontinence) biofeedback seems to be a very promising treatment modality.
 ...
PMID:Biofeedback and relaxation training in the treatment of psychophysiological disorders: or are the machines really necessary? 38 67

A survey shall be given on the physiological, pathophysiological and pharmacotherapeutic backgrounds of the biogenic amine 5-hydroxytryptamine (serotonin; 5HT), to be preceded by a few historical remarks. 5HT is biosynthesized from L-tryptophan via hydroxylation and subsequent decarboxylation. 5HT is predominantly found in enterochromaffin cells, platelets and in various structures of the central nervous system. Its concentration in circulating blood is low and probably subthreshold. Whereas the physiological role of 5HT is rather unclear, 5HT appears to play a relevant role in certain psychiatric disorders, in migraine and the carcinoid syndrome. Its role in essential hypertension remains uncertain. However, 5HT appears to contribute to and to exacerbate the damage to blood vessels which were already predamaged by atherosclerosis, diabetes mellitus or possibly old age as such. A major breakthrough in the pharmacology of the serotonergic system was achieved by the discovery of several subtypes of 5HT receptors, with a corresponding collection of selective agonists and antagonists towards these receptor subtypes. This development is the basis of various drugs which interact with the serotonergic system and its receptors, like the various 5HT2 receptor antagonists (of which ketanserin is the prototype), methysergide, pizotifen, urapidil, flesinoxan and a variety of psychoactive drugs. The most important of these drugs and their potential application will be discussed with an emphasis on cardiovascular disorders.
 ...
PMID:Pathophysiological and pharmacotherapeutic aspects of serotonin and serotonergic drugs. 213 70

Oral contraceptives are clearly contraindicated in patients with a history of thromboembolic disease, ischemic heart attack, or cerebral stroke. Patients requiring long-term anticoagulant treatment can be treated with gonadotropin-releasing hormone analogs to prevent ovulation, because ruptured follicles can cause massive intraperitoneal bleeding. Patients with essential hypertension and severe liver diseases should also discontinue treatment 4 weeks before major elective surgery. Migraine and diabetes mellitus are regarded as relative contraindications, depending on the individual situation. Long-term diseases, such as Crohn's disease, epilepsy, and sickle cell anemia, also require individualized consultation.
 ...
PMID:Oral contraception in disease states. 225 29

The present article deals with the pathophysiological role of serotonin in cardiovascular disease and in other disorders that are accompanied by cardiovascular pathophysiological events. The distribution of serotonin over various organs and tissues and the presence of several types of 5-HT receptors would suggest a rather important physiological role of serotonin. However, a modest serotonergic role could only be shown for the microcirculation and for the regional circulation of the brain and the intestinal wall. An important pathological role of serotonin in the carcinoid syndrome, in migraine, and in peripheral vascular disease is beyond debate, although many details remain to be established. The possibility that serotonergic mechanisms contribute to Raynaud's phenomenon and other vasospastic disorders is the subject of present discussions, although firm evidence for this view is not widely available. An involvement of peripheral serotonin in the genesis and maintenance of essential hypertension seems very unlikely, although vascular damage due to hypertension is probably enhanced by serotonin released from aggregating platelets. This ancillary process is, in particular, to be anticipated in older patients, with vascular walls predamaged by atherosclerosis. For this reason, pharmacological blockade of 5-HT2 receptors may be of potential therapeutic benefit in this category of patient. Finally, the involvement of central serotonergic mechanisms in hypertensive disease cannot be ruled out.
 ...
PMID:Pathophysiological relevance of serotonin. 244 63

The newer dihydropyridine calcium antagonists are structurally related to nifedipine, but may provide greater vascular selectivity and wider clinical utility. Five new dihydropyridines-nisoldipine, nicardipine, nimodipine, felodipine and nitrendipine-are reviewed with regard to their preclinical pharmacology, haemodynamic effects and clinical indications. Nisoldipine is a potent arterial vasodilator with minimal electrophysiological and negative inotropic effects. Although data are still preliminary, the drug has shown some efficacy in both exertional angina and essential hypertension. The dosing interval is not yet clearly established, but may be twice daily. Utility in congestive heart failure awaits confirmation, but preliminary studies are promising. Nicardipine is an especially potent peripheral, cerebral and coronary arterial vasodilator that causes 10-fold less myocardial depression in animals than nifedipine, and may provide important cardioprotective effects during ischaemia. Human haemodynamic studies have confirmed nicardipine's lack of negative inotropism, its ability to reduce coronary and peripheral vascular resistance, and its lack of effect on cardiac conduction. Several controlled trials have documented its efficacy in exertional angina, vasospastic angina, and essential hypertension. Nicardipine's potential as an antiatherosclerotic agent is currently under investigation. Nimodipine is undergoing a unique clinical development programme aimed at cerebrovascular disorders. In almost all species, nimodipine selectively increases cerebral blood flow and reverses cerebral artery spasm without altering cerebral oxidative metabolism or systemic blood pressure. In humans, a large, double-blind, placebo-controlled trial in subarachnoid haemorrhage showed that nimodipine significantly reduced the severity of neurological deficits associated with delayed cerebral vasospasm. Several uncontrolled trials with larger numbers of patients support these results. Nimodipine has also proved useful in reducing cerebral artery spasm during intracranial surgery, and in the prophylactic treatment of migraine headaches. A preliminary study of nimodipine in acute stroke showed promising results in limiting neurological disability. Felodipine is a very potent systemic arterial vasodilator with negligible myocardial depressant activity. It is also a renal artery vasodilator. Unlike the other new dihydropyridines, felodipine prolongs the A-H interval on electrophysiological testing, but only to about 50% of that observed with verapamil. Felodipine is undergoing clinical trials in essential hypertension.(ABSTRACT TRUNCATED AT 400 WORDS)
 ...
PMID:'Second generation' dihydropyridine calcium antagonists. Greater vascular selectivity and some unique applications. 331 91

Serotonin released from aggregating platelets can reach sufficient concentrations to affect local vascular function in a number of ways. The monoamine can cause contraction of blood vessels by its direct action on smooth muscle or by potentiating the effect of other vasoconstrictor agents. It can also induce vasodilatation by a direct relaxing effect on smooth muscle, by inhibition of adrenergic nerves, and by release of an uncharacterized relaxing factor from endothelial cells. One of its most likely physiological roles is to aid in haemostasis by promoting platelet aggregation and by causing local vasoconstriction at sites of injury. It probably has a role in some forms of vascular pathology as well: it may contribute to vasospasm of cerebral, coronary, and digital arteries, particularly if there is endothelial dysfunction or damage. Much evidence has implicated serotonin (5-hydroxytryptamine) in the pathogenesis of migraine. Serotonergic agonists, such as ergotamine, and antagonists, such as methysergide and pizotifen, are both used in therapy of migraine. Promising but conflicting early results have not yet defined a place for serotonergic antagonists in other vasospastic disorders. The antihypertensive efficacy of one serotonergic antagonist, ketanserin, raises questions about the possible involvement of serotonin in either the initiation or the maintenance of the elevated peripheral vascular resistance in several forms of hypertension, including essential hypertension.
 ...
PMID:Serotonin and the vascular system. Role in health and disease, and implications for therapy. 351 33

A review of the literature on the comprehensive description of depressive patients revealed prominent concern with syndromic subtypes, course of illness, and personality factors, followed by severity, concomitant physical disorders, psychosocial stressors, and adaptive functioning. The descriptive value of multiaxial approaches for depression was illustrated through the application of an extended DSM-III formulation to all 3455 depressive (bipolar depression, major depression, dysthymic disorder, and atypical depression) and 7837 nondepressive patients of all ages and sexes presenting for evaluation and care at the Psychiatric Institute of the University of Pittsburgh during a period of 53 months. Twenty-six percent of the depressive patients received an additional diagnosis in axis I, the most frequent of which were substance use disorder, anxiety disorder, and condition not attributable to a mental disorder. In axis II, depressive patients presented a differentially higher frequency of dependent personality disorder and the "anxious/fearful" cluster of personality disorders. In axis III, 47% of the depressive vs. 40% of the nondepressive patients had a positive diagnosis of physical illness, with a significantly higher frequency among depressive patients attained by acquired hypothyroidism, migraine, essential hypertension, unspecified abdominal hernia, and unspecified arthropathies. Specific stressors differentially more frequent among depressive patients were those of conjugal, parenting, and occupational types and those reflecting the impact of physical illness. Overall stressor severity was at severe, extreme, or catastrophic levels for 42% of the depressive and 31% of the nondepressive patients. The highest level of adaptive functioning in the past year was good, very good, or superior for 44% of the depressive and 29% of the nondepressive patients.(ABSTRACT TRUNCATED AT 250 WORDS)
 ...
PMID:Multiaxial characterization of depressive patients. 358 10

Muscle relaxation is one of the most effective means at our disposal for diminishing emotional stress. In the context of behavior therapy it has featured in systematic programs to overcome anxiety response habits. Its original usage by Jacobson was an ad hoc measure for meeting tensions as they arose, as well as for ongoing tensions. This usage also often results in diminution of anxiety response habits--inadvertently. It has been found of value in the treatment of migraine and tension headaches, insomnia and essential hypertension, and also in at least some cases of Type A personality. There is reason to think that in normal populations relaxation training may have a role in the prevention of neuroses.
 ...
PMID:Deconditioning and ad hoc uses of relaxation: an overview. 615 52

Normotensive and hypertensive headache sufferers were treated with D-phenylalanine, aprotinin or captopril--all inhibitors of endogenous opioid degradation. Inconsistent results were obtained using D-phenylalanine and aprotinin (acute administration at the start of a migraine attack). Satisfactory results were obtained by prophylactic treatment with captopril (an inhibitor of the angiotensin converting enzyme and of the dipeptidyl carboxypeptidase--an enkephalin inactivating enzyme) compared with conventional drugs such as methysergide, lisuride, pizotifen, clonidine and beta-blocking agents. Excellent results were obtained with captopril on patients suffering from headache and arterial hypertension who had experienced no relief from beta-blocking agents and clonidine. Captopril could thus be a drug of choice in the therapy of headache associated with essential hypertension.
 ...
PMID:Enkephalinase inhibition relieves pain syndromes of central dysnociception (migraine and related headache). 618 94


1 2 Next >>