Abstract:
RATIONALE:Multiple low doses of cocaine (COC) may cause intermittent vasoconstriction and reperfusion, leading to elevations in damaging reactive oxygen species, such as hydroxyl free radicals (*OH). Salicylate may offer protection because it reacts with *OH and/or because of its anti-inflammatory actions. OBJECTIVE:To measure *OH concentrations in hearts and brains of chicken embryos exposed to multiple, small doses of COC, and to determine if otherwise non-toxic doses of sodium salicylate (NaSal) protected against the marginal but significant reduction in hatchability caused by a model of "binge" COC exposure. METHODS:Three experiments were carried out. In the first, 67.5 mg COC/kg egg was administered as five doses of 13.5 mg/kg egg or 0.675 mg/egg every 1.5 h, injected just beneath the shell, on day 18 of development (E18), 1 h after NaSal (25 or 100 mg/kg egg) was injected as a bolus. Hearts and brains taken shortly afterward were analyzed for *OH. In experiment 2, the dose of COC was reduced to 56.5 mg/kg egg so as to achieve a small but significant reduction in hatchability in order to determine if NaSal protected against or enhanced COC's toxicity, manifest as an increase or decrease in hatchability. The doses of NaSal for this experiment were 50, 100 or 200 mg/kg egg, all devoid of effects upon hatchability when injected alone. Experiment 3 was done to confirm the presence of vascular disruptions/hemorrhages observed on COC-exposed embryos while harvesting hearts and brains for chemical analyses and to quantify what appeared to be enhanced COC-related vascular accidents associated with NaSal pretreatment. The dose of NaSal used in experiment 3 was 200 mg/kg egg and COC was injected again at 5x13.5 mg/kg egg. RESULTS:COC increased *OH in hearts and brains of chicken embryos on E18, and non-toxic doses of NaSal (i.e. 100 or 200 mg/kg egg) enhanced COC's toxicity in a dose-related manner. The lowest NaSal dose (50 mg/kg egg) may have offered some protection against the effects of COC, as the reduction in hatchability caused by 56.5 mg COC/kg egg was no longer significant. Vascular disruptions/hemorrhages were associated with and most likely responsible for the interactive toxicity. CONCLUSIONS:Our unexpected findings may be of clinical relevance because of the use of aspirin for treatment of misdiagnosed "preeclamptic" COC-abusing pregnant women and its possible use for COC abusers at risk for reduced cerebral blood flow and stroke.
journal_name
Psychopharmacology (Berl)journal_title
Psychopharmacologyauthors
Castelli MC,Venturini L,Sparber SBdoi
10.1007/s002130100726subject
Has Abstractpub_date
2001-06-01 00:00:00pages
23-31issue
1eissn
0033-3158issn
1432-2072journal_volume
156pub_type
杂志文章abstract:RATIONALE:Chronic pain is becoming a more common medical diagnosis and is especially prevalent in older individuals. As such, prescribed use of opioids is on the rise, even though the efficacy for pain management in older individuals is unclear. OBJECTIVES:Thus, the present preclinical study assessed the effectiveness...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-013-3208-4
更新日期:2014-01-01 00:00:00
abstract:RATIONALE:Caffeine and the adenosine A(1) and A(2A) receptor antagonist CGS15943 produce many behavioral effects that are similar to those produced by classic stimulant drugs (e.g. cocaine and amphetamines). OBJECTIVES:The current study evaluated whether CGS15943 would maintain self-administration and reinstate exting...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-003-1410-5
更新日期:2003-07-01 00:00:00
abstract:RATIONALE:Investigations of the neural consequences of the effects of cocaine on cognition have centered on specific brain circuits including prefrontal cortex, medial temporal lobe and striatum and their roles in controlling drug dependent behavior and addiction. These regions are critical to many aspects of drug abus...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-010-2017-2
更新日期:2011-01-01 00:00:00
abstract:RATIONALE:There at least two ways in which tolerance development to alcohol's behavioral effects could interact with its subsequent intake: 1) tolerance to alcohol's reward or reinforcing effects per se could lead to increased consumption, and 2) tolerance to alcohol's aversive effects could unmask alcohol's rewarding ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s002130000477
更新日期:2000-09-01 00:00:00
abstract:RATIONALE:Corticostriatal circuits are widely implicated in the top-down control of attention including inhibitory control and behavioural flexibility. However, recent neurophysiological evidence also suggests a role for thalamic inputs to striatum in behaviours related to salient, reward-paired cues. OBJECTIVES:Here,...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-017-4627-4
更新日期:2017-08-01 00:00:00
abstract::Depression in children is currently an area of considerable controversy, as is the use of potent psychopharmacologic agents in children. Since EEG sleep techniques have proven to be useful in understanding the mechanisms of depression in adults and in predicting their response to antidepressants, a pilot study employi...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00432281
更新日期:1979-01-31 00:00:00
abstract:INTRODUCTION:Casein kinase I epsilon/delta phosphorylates certain clock-related proteins as part of a complex arrangement of transcriptional/translational feedback loops that comprise the circadian oscillator in mammals. Pharmacologic inhibition leads to a delay of the oscillations with the magnitude of this effect dep...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-010-1860-5
更新日期:2010-07-01 00:00:00
abstract:RATIONALE:Dopamine innervation of the nucleus accumbens is thought to have a major role in the biological processes underlying cocaine self-administration. Recent data suggest that dopamine innervation of the ventral pallidum (VP) may also play an important role. OBJECTIVES:This experiment was initiated to assess extr...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s002130000456
更新日期:2000-07-01 00:00:00
abstract:RATIONALE:Partial dopamine receptor agonists have been proposed as candidate pharmacotherapies for cocaine dependence. OBJECTIVE:This 42-day, within-subject, human laboratory study assessed how maintenance on aripiprazole, a partial D(2) receptor agonist, influenced smoked cocaine self-administration, cardiovascular m...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/s00213-011-2231-6
更新日期:2011-08-01 00:00:00
abstract::Human eyeblink conditioning, a relatively simple form of learning and memory, has previously been shown to be impaired by the central and peripheral anticholinergic scopolamine. The present study compared the behavioral effects of scopolamine with the benzodiazepine lorazepam and a peripherally active anticholinergic,...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/BF02246273
更新日期:1995-12-01 00:00:00
abstract:RATIONAL:Caloric restriction increases the risk of relapse in abstinent drug users. Hormones involved in the regulation of energy balance and food intake, such as leptin and ghrelin, are implicated in drug-related behaviors. OBJECTIVES:We investigated the role of leptin and ghrelin in the augmentation of heroin seekin...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-019-05415-9
更新日期:2020-03-01 00:00:00
abstract::Because of the increasing demand for refined techniques to record drug-induced motoric changes, we designed and evaluated a computer monitoring system with continuous measurement of different parameters of rat motor activity. This system is particularly useful for chronic drug studies because it can characterize patte...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00432113
更新日期:1983-01-01 00:00:00
abstract:RATIONALE:Stress, a powerful precipitant of drug seeking during abstinence, may also accelerate the return to pathological patterns of intake after initial instances of drug reuse. OBJECTIVE:To explore the effect of stress on a learning process underlying relapse, this study assessed the effect of yohimbine on reacqui...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-012-2640-1
更新日期:2012-07-01 00:00:00
abstract:RATIONALE:State-dependent changes in physiological arousal may influence impulsive behaviours. OBJECTIVES:To examine the relationship between arousal and impulsivity, we assessed the effects of yohimbine (an α2-adrenergic receptor antagonist, which increases physiological arousal via noradrenaline release) on performa...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-018-5160-9
更新日期:2019-06-01 00:00:00
abstract:RATIONALE:The indirect dopamine agonist methylphenidate remediates cognitive deficits in psychopathology, but the individual characteristics that determine its effects on the brain are not known. OBJECTIVES:We aimed to determine whether targeted dopaminergically modulated traits and individual differences could predic...
journal_title:Psychopharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00213-016-4307-9
更新日期:2016-07-01 00:00:00
abstract::The effects of bromocriptine, lisuride and apomorphine on specific binding of 3H-spiroperidol to homogenates of rat caudate nucleus were studied. (+)-Butaclamol was used to define specific binding. Bromocriptine and lisuride inhibited binding markedly, in vitro and also 30 min after in vivo injection. Bromocriptine co...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00432172
更新日期:1981-01-01 00:00:00
abstract::Key-press responding of mice was maintained under a fixed-ratio (FR) 30-response schedule of food presentation. Successive 3-min periods during which the experimental chamber was illuminated and the schedule was in effect were preceded by 10-min time-out (TO) periods during which all lights were out and responses had ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00177563
更新日期:1988-01-01 00:00:00
abstract::The effect of the dopamine receptor antagonist haloperidol on the development of sensitization to ethanol-induced increases in locomotor activity was examined in DBA/2J mice. In Experiment 1, different groups of mice were given saline or ethanol (2 g/kg) immediately before each of four locomotor activity sessions (48-...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02245821
更新日期:1995-08-01 00:00:00
abstract::Acute (50.0 mg/kg) and repeated (0.1-10.0 mg/kg) administration of dihydroergosine (DHESN) to rats over 5 days lowered the concentration of 5-HIAA in the brain. DHESN given acutely increased the brain 5-HT in p-CPA-treated animals and diminished the probenecid-induced increase in brain 5-HIAA. In pargyline-treated rat...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00172881
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 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::The effects of naloxone, metenkephalin, and morphine were tested on phencyclidine(PCP)-induced stereotyped behaviors, ataxia, and hyperactivity in the rat. Naloxone (8 mg/kg) significantly decreased stereotypy, ataxia, and hyperactivity across all PCP doses tested (2.0, 4.0, and 6.0 mg/kg). Metenkephalin (40 microgram...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00470593
更新日期:1982-01-01 00:00:00
abstract:RATIONALE:Rats, like humans, are susceptible to the reinforcing effects of reward-related stimuli presented within a compound stimulus array, putatively analogous to the so-called near-miss effect. We have previously demonstrated using a rodent slot machine task (rSMT) that the reward expectancy these stimuli elicit is...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-016-4355-1
更新日期:2016-09-01 00:00:00
abstract::Measurements of the amplitude and latency of the P3b component of the event-related potential (ERP), simple reaction time (SRT) and four psychomotor tests (VAS, DSST, DSp and CFF) were made on 12 male subjects (aged 19-24 years) 1.0-1.5 and 4.0-4.5 h after single oral doses of triprolidine (7.5 mg), terfenadine (60 mg...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/BF00451699
更新日期:1989-01-01 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:RATIONALE:Naturally low prepulse inhibition (PPI) in DBA/2 mice is increased by marketed antipsychotics and compounds acting at novel targets relevant to schizophrenia. Whether other mouse strains with naturally low PPI respond similarly and could be translational models of schizophrenia is unknown. OBJECTIVE:Baseline...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-011-2196-5
更新日期:2011-06-01 00:00:00
abstract::The effects of various psychomotor stimulant drugs and drugs outside this class were examined on the efficacy of stimuli previously paired with reinforcement or reward (conditioned reinforcers, CR) in controlling responding. Pipradrol (5-45 mumol/kg), d-amphetamine (1.25-15.0 mumol/kg), and the cocaine analogues WIN 3...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00427952
更新日期:1983-01-01 00:00:00
abstract:RATIONALE:Nicotine can enhance attentional performance in humans, a property that may be of therapeutic utility. OBJECTIVES:To identify brain sites mediating nicotine-induced attentional enhancement. METHODS:Nicotine (0, 1, 2, 4 and 8 microg) was injected bilaterally into the dorsal hippocampus and the prelimbic area...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-003-1438-6
更新日期:2003-07-01 00:00:00
abstract::The behavioural effects of selective mu-, kappa- and delta-opioid agonists in 5-, 10- and 20-day-old rats were investigated by observational analysis. The predominant response to mu-agonists was behavioural depression. High doses (10 mg/kg IP) of morphine and DAGO (D-Ala2, NMe-Phe4, Glyol5-enkephalin) produced overt s...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00439459
更新日期:1989-01-01 00:00:00
abstract:RATIONALE:There is an emerging body of evidence that implicates a crucial role of γ-aminobutyric acid subtype A (GABAA) receptors in modulating the rewarding effects of a number of abused drugs. Modulation of GABAA receptors may therefore represent a novel drug-class independent mechanism for the development of abuse t...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-015-4155-z
更新日期:2016-02-01 00:00:00