Abstract：
:There have been studies of the discriminative effects of intracerebroventricularly (ICV)-administered morphine (MOR) in rats trained to discriminate MOR systemically, but the converse has not been done. In this study, rats were trained to discriminate between ICV (1-10 microg/3 microl, 1 h) or subcutaneous (SC) (3.0 mg/kg, 30 min) injections of MOR vs. saline/vehicle in a discrete-trial avoidance/escape procedure. On generalization testing, subjects in both the ICV- and SC-trained groups responded on the MOR-appropriate lever at ICV MOR doses < or =1-3 microg, and at SC MOR doses 2 to 3 orders of magnitude higher (vs. ICV). Naltrexone (SC) blocked the stimulus effects of MOR (ICV) equipotently in both training groups. In ICV-trained subjects, levorphanol (SC), the mu-opioid selective peptide [D-Ala2, NMePhe4, Gly-ol]-enkephalin (DAMGO) (ICV), and the enkephalinase inhibitor N-[L-(1-carboxy-2-phenyl)ethyl]-L-phenylalanyl-beta-alanine (SCH 32615) (ICV) produced complete MOR-appropriate responding, whereas the dextrorotary enantiomer of levorphanol dextrorphan (SC; < or = 3.0 mg/kg) and the delta-opioid selective peptide [D-Pen2, D-Pen5]-enkephalin (DPDPE) (ICV, < or = 0.03 mg) did not. SC-trained subjects did not generalize to SCH 32615, which suggests qualitative differences in the discriminative stimulus effects of novel drugs as a function of the route of administration of the training drug. These data demonstrate that it is feasible to train rats to discriminate an opioid administered by the ICV route, and to perform extended tests of generalization to novel drugs (SC or ICV) in rats so trained.
journal_name
Brain Res Bulljournal_title
Brain research bulletinauthors
Easterling KW,Holtzman SGdoi
10.1016/s0361-9230(01)00661-xkeywords:
subject
Has Abstractpub_date
2001-12-01 00:00:00pages
545-51issue
6eissn
0361-9230issn
1873-2747pii
S036192300100661Xjournal_volume
56pub_type
杂志文章abstract：:Eighty-four percent of principal cells in the dorsal nucleus of the lateral geniculate body exhibited a transient depression of spontaneous activity following optic tract stimulation. Antidromic corticofugal activity, generated by the evoked cortical field potential, was seen in 21% of the cells studied. In those cell...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(80)80002-5
更新日期：1980-07-01 00:00:00
abstract：:It has been demonstrated that the posteromedial cortical amygdaloid nucleus (PMCo), is sexually dimorphic. It is shown (Experiment 1) that male orchidectomy on the day of birth (D1) decreases the volume and number of neurons of the PMCo, while a single injection of propionate testosterone to the female on D1 masculini...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(00)00332-4
更新日期：2000-10-01 00:00:00
abstract：:The nucleus locus coeruleus (LC) has been implicated in the modulation of the spinal sensorimotor function. The aim of the present study was to examine the effect of electrical stimulation of the LC on sensorimotor function in the trigeminal system. The following two cases of sensorimotor behaviors mediated by the tri...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(00)00426-3
更新日期：2000-12-01 00:00:00
abstract：:Increases in expression of α4βδ GABAA receptors (GABARs), triggered by fluctuations in the neurosteroid THP (3α-OH-5α[β]-pregnan-20-one), are associated with changes in mood and cognition. We tested whether α4βδ trafficking and surface expression would be altered by in vitro exposure to flumazenil, a benzodiazepine li...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2015.11.015
更新日期：2016-01-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(83)90170-3
更新日期：1983-09-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/s0361-9230(00)00434-2
更新日期：2001-02-01 00:00:00
abstract：:Spontaneous locomotion and motor coordination was evaluated in young (5-6 month old) and aged (24-25 month old) rats. Animals were tested for spontaneous locomotor activity in Digiscan Animal Activity Monitors during the nocturnal cycle. Aged animals exhibited a significant hypoactivity compared to their young counter...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(93)90294-l
更新日期：1993-01-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(94)00256-8
更新日期：1995-01-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2009.12.010
更新日期：2010-04-05 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(79)90287-9
更新日期：1979-03-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2005.06.018
更新日期：2005-09-30 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(97)00436-x
更新日期：1998-03-15 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(99)00063-5
更新日期：1999-07-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2004.01.008
更新日期：2004-03-15 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(84)90213-2
更新日期：1984-01-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(82)90124-1
更新日期：1982-07-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2006.11.005
更新日期：2007-03-15 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(80)90275-0
更新日期：1980-01-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2020.11.002
更新日期：2021-01-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2019.11.015
更新日期：2020-02-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(94)90001-9
更新日期：1994-01-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(85)90025-5
更新日期：1985-05-01 00:00:00
abstract：:The gonadotrophin-releasing hormone 1 (GnRH1) system has been investigated immunohistochemically in Cape dune mole-rats (Bathyergus suillus), subterranean rodents that normally display severe aggression towards conspecifics. These animals breed seasonally and show a reduced mean plasma level of luteinising hormone dur...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2008.07.004
更新日期：2008-10-22 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(92)90044-x
更新日期：1992-03-01 00:00:00
abstract：:Vagal nerve stimulation (VNS) is known as an effective method of treatment in a number of neurological disorders. The low risk of side effects also makes it useful in clinical trials in other diseases. Branches of the vagal nerve innervate the anatomical structures known to be involved in memory processing. That is wh...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/j.brainresbull.2019.11.011
更新日期：2020-02-01 00:00:00
abstract：:Inflammation and oxidative stress play an important role in cerebral ischemic pathogenesis. Polydatin has been proved to elicit numerous biological effects through its anti-inflammatory and anti-oxidant properties. However, little is known regard to the mechanism of polydatin's neuroprotection in ischemic stroke. We t...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2011.09.021
更新日期：2012-01-04 00:00:00
abstract：:In animal models of Fetal Alcohol Syndrome, ethanol causes a number of changes in brain development, with many of these changes being very transient. This is especially true for the process of synaptogenesis in different brain areas. Our quantitative electron microscopic study of synaptogenesis in the molecular layer ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(88)90119-0
更新日期：1988-07-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2019.11.009
更新日期：2020-02-01 00:00:00
abstract：:In female rats, stimulation of the uterine cervix during mating induces two daily surges of prolactin. Inhibition of hypothalamic dopamine release and stimulation of oxytocin neurons in the paraventricular nucleus (PVN) are required for prolactin secretion. We aim to better understand how stimulation of the uterine ce...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2012.06.004
更新日期：2012-09-01 00:00:00
abstract：OBJECTIVE:Cerebral ischemic stroke (IS) threatens the daily life of individuals, with high mortality. Emerging studies have deciphered the independent roles of the long non-coding RNA growth-arrest-specific transcript 5 (GAS5), microRNA (miR)-455-5p and phosphatase and tensin homolog (PTEN) in IS, but the understanding...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2020.12.002
更新日期：2021-02-01 00:00:00
