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Erectile impotence is a commonly reported undesired side effect in patients treated for hypertension with alpha-methyldopa. However, the mechanism of that dysfunction has not been determined. In this study we report the effect of 12 days of daily intraperitoneal injections, 300 mg./kg., of alpha-methyldopa on adult male, Long-Evans rats and their age-matched saline controls. The effect of the drug upon copulation, penile reflexes and tissue catecholamines was measured. The results showed significant differences between control and experimental animals in all parameters studied. Tests of copulatory ability showed significant decreases in mounts from 5.8 +/- 1.6 (mean +/- standard error) to 3.1 +/- 1.3; penile intromissions from 27.0 +/- 3.8 to 4.8 +/- 1.9; and ejaculations from 2.1 +/- 0.3 to 1.1 +/- 0.6 per 30 minute test period. Penile reflexes measured as erection and cup formation showed similar significant reductions. The norepinephrine content of the penile corpora in the controls was 0.460 +/- 0.084 ng./mg. wet weight and 0.112 +/- 0.022 ng./mg. wet weight in the experimental group. There were similar significant reductions of norepinephrine content in the vas deferens of these animals 32.95 +/- 4.31 ng./mg. and 0.25 +/- 0.1 ng./mg. wet weight in the control and experimental groups respectively. 相似文献
43.
Hovens JE Dries PJ Melman CT Wapenaar RJ Loonen AJ 《Journal of psychopharmacology (Oxford, England)》2005,19(1):51-57
Acutely psychotic patients presenting as psychiatric emergencies with aggression or agitation are often administered conventional antipsychotics intramuscularly. However, patients view intramuscular administration as coercive, and conventional antipsychotics are often associated with adverse events. In this open study, consecutive adult patients presenting with an acute exacerbation of schizophrenia or other psychotic disorder were assigned to oral risperidone 2-6 mg/day (n = 48) or oral zuclopenthixol 20-50 mg/day (n = 27) for 7-14 days. Lorazepam (either oral or intramuscular) was administered to both groups as needed. Patients were assessed regularly until day 14 or discharge. Mean Positive And Negative Syndrome Scale (PANSS) aggression scores (sum of item scores on excitement, poor impulse control, hostility and uncooperativeness) decreased steadily and similarly in both groups; the mean changes from baseline were statistically significant at days 10 and 14 and at study end-point. The mean decrease at study end-point in the PANSS component score for hostility was statistically significant in the risperidone group, but not in the zuclopenthixol group. Social Dysfunction and Aggression Scale aggression scores and Clinical Global Impression scores decreased significantly and similarly in both groups. Overall, 18.7% of patients showed minor extrapyramidal symptoms during the study, but only 16.7% of risperidone-treated patients, compared to 59.3% of zuclopenthixol-treated patients, received anti-parkinsonian medication (p < 0.001). Lorazepam was administered to all of the patients assigned to risperidone and to 89% of those assigned to zuclopenthixol. Oral risperidone plus lorazepam is a convenient, effective and well-tolerated alternative to conventional antipsychotics for the treatment of acute psychosis in emergency psychiatry. 相似文献
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Brown SR Gyawali CP Melman L Jenkins ED Bader J Frisella MM Brunt LM Eagon JC Matthews BD 《Surgical endoscopy》2011,25(12):3852-3858
Introduction
While it is well established that antireflux surgery is effective in relieving typical gastroesophageal reflux disease (GERD) symptoms such as heartburn and regurgitation, it is currently unclear whether atypical symptoms (cough, hoarseness, wheeze) foreshadow a less satisfactory outcome following laparoscopic antireflux surgery (LARS). The purpose of this study is to critically analyze the clinical outcomes of atypical symptoms in patients undergoing LARS. 相似文献47.
Brown SR Melman L Jenkins E Deeken C Frisella MM Brunt LM Eagon JC Matthews BD 《Surgical endoscopy》2011,25(5):1390-1394
Background
The purpose of this study was to examine the biological environment of the esophageal hiatus through analysis of the collagen content within the gastrohepatic ligament (GHL), gastrophrenic ligament (GPL), and phrenoesophageal ligament (PEL) in patients with type I hiatal hernias (HH) and type III paraesophageal hernias (PEH). 相似文献48.
49.
Introduction
The purpose of this study was to evaluate the acute fixation strength of fibrin sealant as an alternative fixation method for laparoscopic ventral hernia repair (LVHR) when utilized with absorbable and nonabsorbable barrier meshes. 相似文献50.
Memduh Aydin Keith Downing Guillermo Villegas Xinhua Zhang Rowena Chua Arnold Melman Michael E. DiSanto 《BJU international》2010,106(4):562-571