Search results for "Mechanism"
showing 10 items of 1835 documents
Allosteric sensitization of nicotinic receptors by galantamine, a new treatment strategy for Alzheimer’s disease
2001
Cholinesterase inhibitors are the only approved drug treatment for patients with mild to moderately severe Alzheimer's disease. Interestingly, the clinical potency of these drugs does not correlate well with their activity as cholinesterase inhibitors, nor is their action as short lived as would be expected from purely symptomatic treatment. A few cholinesterase inhibitors, including galantamine, produce beneficial effects even after drug treatment has been terminated. These effects assume modes of action other than mere esterase inhibition and are capable of inducing systemic changes. We have recently discovered a mechanism that could account, at least in part, for the above-mentioned unex…
Pathologist’s Findings after PTCA (The Mechanism of Angioplasty)
1991
Knowledge of the pathological changes induced by percutaneous transluminal coronary angioplasty (PTCA) is necessary to understand its complications.
The identification of peroxisome proliferator-activated receptor alpha-independent effects of oleoylethanolamide on intestinal transit in mice
2009
Oleoylethanolamide (OEA) is an endogenous lipid produced in the intestine that mediates satiety by activation of peroxisome proliferator-activated receptor alpha (PPARalpha). OEA inhibits gastric emptying and intestinal motility, but the mechanism of action remains to be determined. We investigated whether OEA inhibits intestinal motility by activation of PPARalpha. PPARalpha immunoreactivity was examined in whole mount preparations of mouse gastrointestinal (GI) tract. The effect of OEA on motility was assessed in wildtype, PPARalpha, cannabinoid CB(1) receptor and CB(2) receptor gene-deficient mice and in a model of accelerated GI transit. In addition, the effect of OEA on motility was as…
Haemodynamic effects of long-term administration of sildenafil in normotensive pregnant and non-pregnant rats
2011
Please cite this paper as: Pellicer B, Herraiz S, Cauli O, Rodrigo R, Asensi M, Cortijo J, Serra V, Morcillo E, Felipo V, Simon C, Pellicer A. Haemodynamic effects of long-term administration of sildenafil in normotensive pregnant and non-pregnant rats. BJOG 2011;118:615–623. Objective To determine the effects of chronic administration of sildenafil citrateon healthy pregnant rats. Design In vivo animal experimental study. Setting Fundacion IVI–Instituto Universitario IVI, Valencia, Spain. Sample Pregnant and non-pregnant Wistarrats exposed to chronic administration of sildenafil. Methods Placental cross-barrier and feto-maternal relationship levels, maternal blood pressure, and haemody…
Mechanism of New Antipsychotic Medications
2003
Antagonism of D 2 -like dopamine receptors is the putative mechanism underlying the antipsychotic efficacy of psychotropic drugs. Positron emission tomographic studies suggest that the antipsychotic effect of dopamine receptor antagonists occurs within a therapeutic window between 60% and 80%(striatal) D 2 receptor occupancy. The incidence of extrapyramidal side effects increases above the 80% threshold. However, the novel atypical antipsychotic drug, aripiprazole, occupies up to 95% of striatal D 2 -like dopamine receptors at clinical doses, and the incidence of extrapyramidal side effects with aripiprazole is no higher than with placebo. The most likely explanation for this finding is ari…
Psychoanalytically-Oriented Inpatient Psychotherapy of Somatoform Disorders
2008
Somatoform disorders have been neglected in psychoanalytic publications. Unlike the descriptive approach of DSM-IV and ICD-10, sophisticated psychoanalytical models have been proposed for many years explaining the development of physical symptoms without definable medical cause. Based on a review of the psychoanalytic models of somatization and conversion, this article explores difficulties in the medical and psychotherapeutic treatments of somatoform disorders. The unique tradition of psychosomatic inpatient treatment in Germany is illustrated by the psychoanalytic treatment setting at the University of Mainz. A case report of a somatoform patient shows how childhood trauma is activated an…
A common role for psychotropic medications: memory impairment.
2002
Summary The psychopathologic profile of mental disorders is very diverse and psychotropic medications used to treat them differ in their chemical structure. Nevertheless, these drugs share these four characteristics: delayed onset of clinical response, not one of them can be said to cure, there is a high number of non-responders, and the mechanism responsible for their therapeutic action is not known. It is hypothesized that the action of psychotropic medications is memory impairment, understanding memory as the trace left in the nervous system not only by individual experiences but also by genetic and epigenetic phenomena. It is suggested that it would be beneficial to translate some resea…
PROSPECTIVE, RANDOMIZED, CROSSOVER COMPARISON OF SUBLINGUAL APOMORPHINE (3 mg) WITH ORAL SILDENAFIL (50 mg) FOR MALE ERECTILE DYSFUNCTION
2004
Abstract: Purpose: We established the efficacy and safety of sublingual apomorphine compared with oral sildenafil. in comparable groups of patients with erectile dysfunction (ED). Materials and Methods: This prospective, randomized, crossover study included 77 heterosexual men with ED of various etiologies and severities. A total of 62 men were randomized but only 34 were evaluable for efficacy and tolerability. The study started with a run-in period of 2 to 4 weeks. The first 4 weeks of treatment were followed by a washout period of 4 weeks, after which patients changed to the alternate treatment for an additional 4-week period. The sequence of the 2 treatments was established by a randomi…