Drugs online research references
Nihon Shinkei Seishin Yakurigaku Zasshi. 2000 May;20(2):71-6.
Effect of dopaminergic drugs on the reserpine-induced lowering of hippocampal theta wave frequency in rats.
Nakagawa T, Ukai K, Ohyama T, Gomita Y, Okamura H.
Central Research Institute, Kaken Pharmaceutical Co. Ltd., Kyoto, Japan.
The effects of dopaminergic drugs on the lowering of hippocampal theta wave frequency induced by reserpine 1 mg/kg s.c. were examined. Sibutramine (monoamine reuptake inhibitor) 10 mg/kg p.o., methamphetamine (monoamine releaser) 1 mg/kg, quinpirole (dopamine D2 receptor agonist) 10 mg/kg i.p., and SKF 38393 (dopamine D1 receptor agonist) 10 mg/kg i.p. each antagonized the reserpine-induced lowering of hippocampal theta wave frequency in rats. Moreover, the combined administration of SKF 38393 1 mg/kg i.p. and quinpirole 1 mg/kg i.p. synergistically antagonized a reserpine-induced lowering of this frequency. Dosulepin, amitriptyline, and desipramine, which are weak inhibitors of dopamine reuptake, each had little effect on the reserpine-induced lowering of theta wave frequency at a dose of 40 mg/kg p.o. Furthermore, atropine (muscarinic anticholinergic drug) 20 mg/kg p.o. decreased theta wave power in the low-frequency range following a shift to the lower range by reserpine. A positive correlation was observed for each of the above drugs between a reversal of reserpine-induced lowering of theta wave frequency and a reversal of impairment of reserpine-induced conditioned avoidance responses (ACAR) in rats. These results suggest that the reserpine-induced lowering of hippocampal theta wave frequency plays a role in the impairment of reserpine-induced ACAR, and that dopamine D1 and D2 receptors play important roles in antagonizing this lowering of frequency.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11062864&dopt=Abstract
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Neth J Med. 2000 Nov;57(5):198-205.
Smoking cessation: which aids are worthwhile?
van den Berkmortel FW, Bootsma GP, Heijdra YF, van Spiegel PI, Wollersheim H.
Department of Medicine, Division of General Internal Medicine, University Medical Centre, St. Radboud, Geert Grooteplein 8, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands.
Smoking is a major preventable health risk in western society. In the Netherlands, it is held responsible for 86 and 36% of annual mortality from lung cancer and cardiovascular disease, respectively. Nevertheless about 33% of Dutch people smoke. Only 2% of smokers quit successfully after being advised to stop once by a physician. Although the medical profession should play a leading role in campaigns to stop smoking, general practitioners advise only 10% of their smokers to quit. An overview was made of the various aids that can be used to support attempts to quit smoking. Three aids: supportive schedules, nicotine replacement and bupropion chloride had proven long-term effectiveness in up to 5-10, 3-13 and 11-15% of the subjects, respectively. In conclusion, supportive counselling combined with nicotine substitutes or bupropion chloride is the most worthwhile intervention to support quitting attempts. Wider application of this strategy is expected to have major implications on morbidity (50% myocardial infarct risk reduction) and mortality in the Netherlands.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11063866&dopt=Abstract
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msx.upmc.edu
BACKGROUND: Antidepressant-induced periodic limb movement disorder (PLMD) may limit the tolerability of some antidepressant medications and interfere with treatment response. Given the role of dopamine in PLMD and the effects of bupropion sustained-release (SR) on central dopaminergic function, we hypothesized that bupropion SR would not be associated with antidepressant-induced PLMD. METHOD: In an expanded case-series design, we compared the effects of bupropion SR, after about 10 weeks of treatment, on measures of PLMD, depression, and sleep in 5 depressed (Research Diagnostic Criteria) patients who also met criteria for having pretreatment PLMD. Depression was measured using the Beck Depression Inventory and the Hamilton Rating Scale for Depression. Patients were considered to have PLMD if polysomnographic recordings showed > 5 periodic limb movements/hour of sleep that were associated with arousals from sleep. RESULTS: Bupropion SR treatment was associated with a reduction in measures of PLMD and an improvement in depression. CONCLUSION: These results show that bupropion SR is not associated with antidepressant-induced PLMD. Rather, bupropion SR treatment reduces objective measures of PLMD in depressed patients with the disorder.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11105739&dopt=Abstract
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