Abstract:
RATIONALE:Reduction of body temperature is used as predictor of psychotropic drug action. The cutaneous circulation functions as a heat-loss component of temperature regulation. Clozapine and olanzapine reverse hyperthermia and sympathetically-mediated cutaneous vasoconstriction induced by MDMA (3,4-methylenedioxymethamphetamine, ecstasy), suggesting that these drugs might reverse other forms of sympathetically mediated cutaneous vasoconstriction. OBJECTIVES:Clozapine and olanzapine were compared with haloperidol with respect to their ability to reverse cold-induced and LPS (lipopolysaccharide)-induced cutaneous vasoconstriction in rabbits. METHODS:Cutaneous blood flow was measured in conscious rabbits by Doppler ultrasonic flow probe implanted around the central ear artery, and body temperature was measured telemetrically. After control observations, animals were transferred from 26 to 10 degrees C, or LPS (0.5 microLg/kg IV) was administered. After 30 min, clozapine, olanzapine or haloperidol was administered and ear pinna blood flow and body temperature were measured for another 30 min. RESULTS:Clozapine, in a dose responsive manner (1, 2.5 and 5 mg/kg IV), substantially reversed cold-induced ear pinna vasoconstriction and reduced body temperature. Clozapine (1 mg/kg IV) reversed LPS-induced cutaneous vasoconstriction and reduced the LPS-induced rise in body temperature. Olanzapine had generally similar effects. Haloperidol (1 mg/kg IV in cold experiments and 0.2 mg/kg IV in LPS experiments) did not reverse ear pinna vasoconstriction, or affect body temperature. CONCLUSIONS:Both clozapine and olanzapine, but not haloperidol, reverse physiologically induced cutaneous sympathetic vasomotor discharge. Because of the close link between psychological function and sympathetic regulation of cutaneous blood flow, similar neuropharmacological mechanisms might underly the cutaneous vasodilating action and the psychotropic actions of atypical antipsychotic drugs.
journal_name
Psychopharmacology (Berl)journal_title
Psychopharmacologyauthors
Blessing WWdoi
10.1007/s00213-004-1850-6subject
Has Abstractpub_date
2004-10-01 00:00:00pages
487-93issue
4eissn
0033-3158issn
1432-2072journal_volume
175pub_type
杂志文章abstract:RATIONALE:The effect of LSD in humans has been described as occurring in two temporal phases. The behavioral effects in rats also occur in two temporal phases: an initial suppression of exploration followed by increased locomotor activity. OBJECTIVES:We decided to investigate this phenomenon from the perspective that ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-005-2183-9
更新日期:2005-07-01 00:00:00
abstract:RATIONALE:Heavy ecstasy use in humans has been associated with cognitive impairments and changes in cognitive brain function supposedly due to damage to the serotonin system. There is concern that even a single dose of 3,4-methylenedioxymethamphetamine may be neurotoxic, but very little is known about the consequences ...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/s00213-007-0792-1
更新日期:2007-08-01 00:00:00
abstract:RATIONALE:Although the behavioral effects of systemic injection of lipopolysaccharide (LPS) have been extensively investigated, the modulation of these effects by natural environmental factors has received little attention. OBJECTIVES:The present study investigated whether or not locomotor activity reductions and the ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-003-1554-3
更新日期:2003-12-01 00:00:00
abstract:BACKGROUND:Emerging data indicate the neuromodulator adenosine may play a role in the therapeutics of schizophrenia. Adenosine A(2A) receptor stimulation exerts a functional antagonism at postsynaptic D(2) receptors. Data from animal models relevant to schizophrenia support a therapeutic effect of modulating adenosiner...
journal_title:Psychopharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00213-011-2315-3
更新日期:2011-11-01 00:00:00
abstract::A paradigm for assessing benzodiazepine receptor sensitivity was developed using intravenous midazolam in normal volunteers. After administration of incremental doses of midazolam, alterations in saccadic eye movement parameters and psychological self ratings were assessed. Significant changes included dose-dependent ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02244431
更新日期:1991-01-01 00:00:00
abstract::The present experiment examined effects of nicotine on body weight of male and female rats when Oreo cookies, potato chips, laboratory chow, and water were available. Body weight and eating behavior were measured for 17-day periods before, during, and after nicotine or saline administration. There was an inverse relat...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00212851
更新日期:1988-01-01 00:00:00
abstract:RATIONALE:Dysfunction of glutamatergic neurotransmission has been implicated in the pathophysiology of obsessive-compulsive disorder (OCD) and recent clinical reports suggest that some glutamate modulating agents are efficacious in the treatment of this disorder. N-acetylcysteine (NAC) is a readily available amino acid...
journal_title:Psychopharmacology
pub_type: 信件
doi:10.1007/s00213-005-0246-6
更新日期:2006-01-01 00:00:00
abstract:RATIONALE:The touchscreen continuous trial-unique non-matching-to-location task (cTUNL) has been developed to optimise a battery of tasks under NEWMEDS (Novel Methods leading to New Medication in Depression and Schizophrenia, http://www.newmeds-europe.com ). It offers novel task features of both a practical and a theor...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-015-4019-6
更新日期:2015-11-01 00:00:00
abstract:BACKGROUND:Ketamine, a non-competitive N-methyl-D: -aspartic acid antagonist, has been widely used for anaesthetic purposes. At sub-anaesthetic dosage, it induces a dissociative state similar to schizophrenia. The discovery of this effect on dissociative state has led to its use as a pharmacological model of schizophre...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-010-1797-8
更新日期:2010-05-01 00:00:00
abstract::Recently, evidence has emerged showing that the behavioural and hormonal features of fear extinction are altered as a result of reproductive experience in both rats and humans. The current set of experiments sought to determine whether reproductive experience also alters the molecular features of fear extinction. In a...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-018-4956-y
更新日期:2019-01-01 00:00:00
abstract::Chronic nicotine infusion has been found in a series of studies in our laboratory to significantly improve choice accuracy of rats in the eight-arm radial maze. The current study was designed to compare the effects of chronic nicotine infusion on working and reference memory in a 16-arm radial maze. Nicotine was admin...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02805971
更新日期:1996-09-01 00:00:00
abstract:RATIONALE:Atypical antipsychotic drug (APD)-induced weight gain causes non-compliance, increasing the risk of relapse and medical complications. OBJECTIVES:In an animal model, we assessed body weights, food intake, body fat/lean body mass contents and blood serum levels of glucose and lipids in female rats treated wit...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-005-0081-9
更新日期:2005-10-01 00:00:00
abstract::Ibogaine is currently being investigated for its potential use as an anti-addictive agent. In the present study we sought to determine whether prior morphine exposure influences the ability of ibogaine to inhibit morphine-induced locomotor stimulation. Female Sprague-Dawley rats were pretreated once a day for 1-4 days...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02246495
更新日期:1995-10-01 00:00:00
abstract::The name of Hayley Treloar Padovano was incorrectly tagged in the original version of this article. Instead of Padovano as family name and Hayley Treloar as given name, it should be Hayley as given name and Treloar Padovano as family name. Correct presentation of author name when online should be Treloar Padovano H. ...
journal_title:Psychopharmacology
pub_type: 杂志文章,已发布勘误
doi:10.1007/s00213-018-4967-8
更新日期:2018-09-01 00:00:00
abstract:INTRODUCTION:Dopamine D2 receptor occupancy levels needed for the maintenance treatment of schizophrenia remain to be elucidated. We examined 3-year clinical outcomes of patients with schizophrenia who received long-acting injectable risperidone (LAI risperidone) at baseline and investigated their dopamine D2 receptor ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-016-4428-1
更新日期:2016-12-01 00:00:00
abstract::m-Chlorophenylpiperazine (mCPP), a major metabolite of the atypical antidepressant trazadone, has been observed to produce marked physiological and behavioral effects in both humans and animals. These effects have been attributed to the interaction of mCPP with serotonergic receptors. The present study was designed to...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02246164
更新日期:1995-05-01 00:00:00
abstract::In order to study trends in smoking withdrawal symptoms, 35 participants in a smoking cessation clinic completed four questionnaires daily for 2 weeks. The questionnaire dealt with a variety of symptoms which a factor analysis showed could be grouped into four factors: stimulation, desire to smoke, and physical and ps...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00634151
更新日期:1976-10-20 00:00:00
abstract:RATIONALE:Cannabinoid antagonists purportedly have greater effects in reducing the intake of highly palatable food compared to less palatable food. However, this assertion is based on free-feeding studies in which the amount of palatable food eaten under baseline conditions is often confounded with other variables, suc...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-013-3366-4
更新日期:2014-05-01 00:00:00
abstract::Aniamls were administered increasing doses of morphine for 16 days. During withdrawal they were challenged with an apomorphine ester or lergotrile. These dopamine agonists produced quantitatively different effects on behaviour. The results suggest that chronic morphine administration leads to dopamine supersensitivity...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00433570
更新日期:1979-05-15 00:00:00
abstract::Nine human subjects were exposed to a multiple fixed-ratio (FR) differential-reinforcement-of-low-rate (DRL) schedule of monetary reinforcement. Presses on a manipulandum requiring relatively high force were occasionally followed by an increased money total displayed on a computer screen. Subjects were exposed to the ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00177913
更新日期:1987-01-01 00:00:00
abstract::After learning a light-cued, go-no go successive discrimination to criterion, male Sprague-Dawley rats received 0, 5, or 10 mg/kg chlordiazepoxide on six performance sessions, followed by two drug-recovery (saline) sessions. Chlordiazepoxide impaired discrimination performance in a dose-dependent manner, with animals ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00652237
更新日期:1986-01-01 00:00:00
abstract:RATIONALE:Several lines of evidence have indicated that the central histaminergic system might be involved in learning and memory OBJECTIVES:The aim of the present study was to ascertain the impact on memory processes of putative histaminergic-cholinergic interactions in the nucleus basalis magnocellularis (NBM) of th...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s002130100892
更新日期:2002-01-01 00:00:00
abstract::The residual effects of three hypnotics were investigated by the method of 24-h polygraphy (EEG, EMG, and EOG). The drugs were triazolam 0.25 mg and 0.5 mg, flurazepam 15 mg and 30 mg, nitrazepam 5 mg and 10 mg, and placebo. The subjects were healthy volunteers, eight men and eight women with an average age of 34.3 ye...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/BF00426651
更新日期:1980-01-01 00:00:00
abstract::Male Sprague-Dawley rats were evaluated between ages 18 and 825 days for responses to doses of haloperidol (0 and 0.05-10 mg/kg, IP). Catalepsy, ptosis, and inhibition of general motor activity showed steady decreases in sensitivity to the drug with age during the first 1.5 years of maturation, while rats older than 1...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00422406
更新日期:1981-01-01 00:00:00
abstract::Active uptake of serotonin by blood platelets of acute schizophrenic patients has been compared to that of a control group. Preliminary results presented in this article indicate that the uptake of the schizophrenic patients was about 40% lower than that of controls. Patients were followed over a period of 5 weeks wit...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00496061
更新日期:1979-08-08 00:00:00
abstract:RATIONALE:Prepulse inhibition (PPI) of the startle reflex is a model of pre-attentional inhibitory function. The dopamine baseline in the nucleus accumbens plays a key role in PPI regulation as well as in the rewarding effects of cocaine. OBJECTIVES:The aim of this study was to evaluate the predictive ability of PPI t...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-018-4959-8
更新日期:2018-09-01 00:00:00
abstract::Administration of 10 mg/kg TRH to mice was found to reduce the sleep and hypothermia induced by 4.7 g/kg ethanol. However, TRH did not reduce the sleep of mice that were given gamma-hydroxybutyric acid (GHBA), baclophen, or aminooxyacetic acid (AOAA) in combination with 3 g/kg/ ethanol. TRH also failed to reverse the ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00439101
更新日期:1977-04-29 00:00:00
abstract::The capacity of the specific narcotic antagonists naltrexone and naloxone to block the discriminative effects produced by morphine in the rat were evaluated using a two-choice, discrete-trial avoidance task. The antagonists produced a dose-dependent and time-dependent blockade of morphine's effects as measured by resp...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00430479
更新日期:1976-11-10 00:00:00
abstract::Cortical and hippocampal EEGs in animal models of schizophrenia were compared to those obtained with psychotomimetics or antipsychotic agents by utilizing power spectral analysis. Models of positive schizophrenic symptoms were created with methamphetamine (MAP) and cocaine, and a model of both negative and positive sy...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s002130050306
更新日期:1997-06-01 00:00:00
abstract:RATIONALE:The ability of tobacco harm reduction strategies to produce significant reductions in toxin exposure is limited by compensatory increases in smoking behavior. Characterizing factors contributing to the marked individual variability in compensation may be useful for understanding this phenomenon and assessing ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-009-1567-7
更新日期:2009-09-01 00:00:00