Inhibition of brain 5 alpha-reductase in pregnant rats: effects on enzymatic and behavioral activity.

Abstract:

:Medial basal hypothalamic (MBH) 5 alpha-reductase activity was significantly blocked with a known inhibitor, Proscar (Finasteride), in pregnant rats while their open-field behavior was quantified during the last week of pregnancy. In control animals, open-field behavior significantly decreased (in a stair-step fashion) as a function of increasing gestational age. Conversely, in Proscar-treated animals open-field values significantly increased on day 15 and 17 of gestation compared to control values. These data indicate that inhibition of MBH 5 alpha-reductase during pregnancy significantly increased open-field activity levels during late gestation in rats and provides evidence for a link between the production of 5 alpha-reduced metabolites of progesterone in brain and behavioral activity during pregnancy.

journal_name

Brain Res

journal_title

Brain research

authors

Lephart ED,Ladle DR,Jacobson NA,Rhees RW

doi

10.1016/s0006-8993(96)01068-2

subject

Has Abstract

pub_date

1996-11-11 00:00:00

pages

356-60

issue

1-2

eissn

0006-8993

issn

1872-6240

pii

S0006-8993(96)01068-2

journal_volume

739

pub_type

杂志文章
  • Blood-brain and blood-spinal cord barrier permeability during the course of experimental allergic encephalomyelitis in the rat.

    abstract::Experimental allergic encephalomyelitis (EAE) was induced in young male Lewis rats. Blood-brain barrier permeability to radiotracers of different molecular sizes was studied at intervals after induction using a tissue sampling technique. The results were correlated to the clinical picture and to the histological appea...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(84)90249-x

    authors: Juhler M,Barry DI,Offner H,Konat G,Klinken L,Paulson OB

    更新日期:1984-06-08 00:00:00

  • Antinociception produced by receptor selective opioids: modulation of spinal antinociceptive effects by supraspinal opioids.

    abstract::The effect of intracerebroventricular administration of low-antinociceptive doses of selective mu- (DAMGO) or delta- (DPDPE) opioid agonists on the dose-dependent antinociceptive effects produced by intrathecal administration of sequentially increasing doses of selective mu-, delta-, or kappa-(U50,488H) opioid agonist...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(92)91449-o

    authors: Miaskowski C,Levine JD

    更新日期:1992-11-06 00:00:00

  • The effects of N-methyl-D-aspartate receptor blockade with MK-801 upon the relationship between cerebral blood flow and glucose utilisation.

    abstract::The local cerebral circulatory and metabolic effects of MK-801, a selective non-competitive N-methyl-D-aspartate receptor antagonist have been examined in conscious rats with quantitative autoradiographic techniques using [14C]iodoantipyrine and [14C]2-deoxyglucose as tracers. Local cerebral blood flow (CBF) and local...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(90)90172-8

    authors: Nehls DG,Park CK,MacCormack AG,McCulloch J

    更新日期:1990-03-19 00:00:00

  • Differential reactivity of dopaminergic neurons in the nucleus accumbens in response to different behavioral situations. An in vivo voltammetric study in free moving rats.

    abstract::The reactivity of dopaminergic (DA) terminals in the nucleus accumbens was investigated in male rats submitted to tail-pinch or various social interactions. The DA activity was assessed by measurement of the presynaptic metabolite 3,4-dihydroxyphenylacetic acid (DOPAC) by using differential pulse voltammetry in free m...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(86)90646-3

    authors: Louilot A,Le Moal M,Simon H

    更新日期:1986-11-12 00:00:00

  • Effects of small amygdaloid lesions on pancreatic exocrine secretion.

    abstract::To investigate the role of the amygdala in central regulation of pancreatic exocrine secretion, the effects of electrolytic lesions on pancreatic secretion were studied in rats. Small bilateral electrolytic lesions in amygdaloid body restricted to basolateral, medial and central nuclei were produced. Eight days after ...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(85)90770-x

    authors: Mine K,Tsuruta N,Nakai Y,Kataoka Y,Fujiwara M,Ueki S,Nakagawa T

    更新日期:1985-08-05 00:00:00

  • The lipid and protein content of cholinergic synaptic vesicles from the electric organ of Torpedo marmorata purified to constant composition: implications for vesicle structure.

    abstract::The lipid, protein, acetylcholine and ATP content of cholinergic synaptic vesicles isolated from the richly innervated electric organ of Torpedo marmorata and purified to constant composition has been determined. The number of vesicles present in the preparations has been estimated by quantitative electron microscopy ...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(79)90674-7

    authors: Ohsawa K,Dowe GH,Morris SJ,Whittaker VP

    更新日期:1979-02-09 00:00:00

  • Development of somatostatin-containing neurons and fibers in the rat hippocampus.

    abstract::Using a combination of in situ hybridization and immunohistochemistry, the development of somatostatin (SS)-containing neurons and fibers was examined in the rat dorsal hippocampus and dentate gyrus. The major development of this hippocampal peptidergic system occurs postnatally. At postnatal day 1 (P1), neurons conta...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0165-3806(88)90013-2

    authors: Naus CC,Morrison JH,Bloom FE

    更新日期:1988-05-01 00:00:00

  • The clock in the mouse retina: melatonin synthesis and photoreceptor degeneration.

    abstract::Melatonin is synthesized rhythmically under control of circadian oscillators by the retinas of non-mammalian vertebrates. Here we report that the retinas of some strains of laboratory mice exhibit robust circadian rhythms of melatonin synthesis which can be entrained by light in vitro. The rd mutation results in progr...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/s0006-8993(97)01446-7

    authors: Tosini G,Menaker M

    更新日期:1998-04-13 00:00:00

  • The structure and function of actin cytoskeleton in mature glutamatergic dendritic spines.

    abstract::Dendritic spines are actin-rich protrusions from the dendritic shaft, considered to be the locus where most synapses occur, as they receive the vast majority of excitatory connections in the central nervous system (CNS). Interestingly, hippocampal spines are plastic structures that contain a dense array of molecules i...

    journal_title:Brain research

    pub_type: 杂志文章,评审

    doi:10.1016/j.brainres.2014.05.024

    authors: Bellot A,Guivernau B,Tajes M,Bosch-Morató M,Valls-Comamala V,Muñoz FJ

    更新日期:2014-07-21 00:00:00

  • Involvement of nigrostriatal dopamine neurons in the contraversive rotational behavior evoked by electrical stimulation of the lateral hypothalamus.

    abstract::This experiment was conducted to determine if nigrostriatal dopamine (DA) neurons are necessary for the contraversive rotational behavior evoked by electrical stimulation in the lateral hypothalamus. Rats were tested daily for electrical stimulation-induced rotational behavior (ESRB) for 5 days, and then given an inje...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(85)91508-2

    authors: Castañeda E,Robinson TE,Becker JB

    更新日期:1985-02-18 00:00:00

  • Dopamine transporter: deglycosylation with exo- and endoglycosidases.

    abstract::The dopamine transporter from rat caudate-putamen was photolabeled with [125I]DEEP as previously described. Treatment of photolabeled membranes with neuraminidase and N-glycanase reduced the molecular weight of the [125I]DEEP photolabeled dopamine transporter complex, whereas treatment with alpha-mannosidase had no ef...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(91)91627-d

    authors: Lew R,Grigoriadis D,Wilson A,Boja JW,Simantov R,Kuhar MJ

    更新日期:1991-01-25 00:00:00

  • Electrophysiological analysis of the tecto-olivo-cerebellar (crus II) projection in the rat.

    abstract::In albino rats the superior colliculus was stimulated and evoked potentials were explored in the cerebellar hemisphere including the paramedian lobule, and crura I and II. Climbing fiber responses were identified in a strip (ca. 1 mm wide) in the medial region of crus II, extending to both folia a and b. In the tector...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(86)90304-5

    authors: Akaike T

    更新日期:1986-07-16 00:00:00

  • Nicotinic acetylcholine receptor antagonist effect of fluoxetine in rat hippocampal slices.

    abstract::We compared the effect of mecamylamine and fluoxetine on the hippocampal noradrenaline (NA) release evoked by nicotine in vitro. Nicotine (100 microM) increased the basal release of [3H]NA from rat hippocampal slices. This effect was blocked by the potent nicotinic antagonist mecamylamine in a dose-dependent manner (I...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/s0006-8993(97)00343-0

    authors: Hennings EC,Kiss JP,Vizi ES

    更新日期:1997-06-13 00:00:00

  • Mesolimbic dopaminergic neurons innervating the hippocampal formation in the rat: a combined retrograde tracing and immunohistochemical study.

    abstract::A major mesolimbic projection towards the hippocampal formation (HF) has been extensively described, but no clear evidence of its dopaminergic content has been demonstrated. In order to evaluate the percentage of dopaminergic (DA) cells of ventral tegmental area (VTA-A10) and adjacent substantia nigra (SN-A9) projecti...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(94)90512-6

    authors: Gasbarri A,Verney C,Innocenzi R,Campana E,Pacitti C

    更新日期:1994-12-30 00:00:00

  • Regional variability of blood flow and glucose utilization within the subependymal germinal matrix.

    abstract::Regional cerebral blood flow (RCBF) and local cerebral glucose utilization (LCGU) were studied in normal, awake newborn beagle puppies using quantitative autoradiography. A highly significant linear relationship between RCBF and LCGU was present for all brain structures. Special attention was directed to the subependy...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(84)90709-1

    authors: Pasternak JF,Groothuis DR

    更新日期:1984-05-14 00:00:00

  • The action of MPTP on synaptic transmission is affected by changes in Ca2+ concentrations.

    abstract::1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) causes a disruption of nigrostriatal dopaminergic function which resembles parkinsonism. On the cellular level, the disruption involves a Ca2+ independent release of dopamine, depletion of nigral and striatal dopamine, and the death of dopaminergic neurons. We have p...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(91)91035-y

    authors: Wilson JA,Lau YS,Gleeson JG,Wilson JS

    更新日期:1991-02-15 00:00:00

  • Thalamic nuclei that project to reptilian telencephalon lack GABA and GAD immunoreactive neurons and puncta.

    abstract::Brains of reptiles, Caiman crocodilus, were processed by standard immunocytochemical methodology using a polyclonal antibody to gamma-aminobutyric acid (GABA) raised in rabbit and a polyclonal antibody to glutamic acid decarboxylase (GAD) raised in sheep. No GABA(+) or GAD(+) cells or puncta were observed over any tha...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(88)90068-6

    authors: Pritz MB,Stritzel ME

    更新日期:1988-08-02 00:00:00

  • The dendritic trees of Purkinje cells: a computer assisted analysis of HRP labeled neurons in organotypic cultures of kitten cerebellum.

    abstract::Purkinje cell dendritic arborizations were studied in HRP intracellularly stained mature neurons grown during 30-50 days in organotypic cerebellar cultures from newborn kittens. The effects of afferent fiber depletions on the final dendritic topological parameters were investigated by computer assisted methods. Three ...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(83)90051-3

    authors: Calvet MC,Calvet J,Camacho R,Eude D

    更新日期:1983-12-05 00:00:00

  • The activation of cannabinoid CB2 receptors stimulates in situ and in vitro beta-amyloid removal by human macrophages.

    abstract::The endocannabinoid system is a promising therapeutic target in a wide variety of diseases. However, the non-desirable psychotropic effects of natural and synthetic cannabinoids have largely counteracted their clinical usefulness. These effects are mostly mediated by cannabinoid receptors of the CB(1) type, that exhib...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/j.brainres.2009.05.098

    authors: Tolón RM,Núñez E,Pazos MR,Benito C,Castillo AI,Martínez-Orgado JA,Romero J

    更新日期:2009-08-04 00:00:00

  • Casein kinase II is associated with neurofibrillary tangles but is not an intrinsic component of paired helical filaments.

    abstract::Neurofibrillary tangles (NFT) are pathological cytoskeletal structures composed of paired helical filaments (PHF), and are found in neurons of patients afflicted with many neurodegenerative disorders, including Alzheimer's disease (AD). We previously found that an antiserum against casein kinase II (CK-II) stained NFT...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(92)90121-o

    authors: Baum L,Masliah E,Iimoto DS,Hansen LA,Halliday WC,Saitoh T

    更新日期:1992-02-21 00:00:00

  • Kainic acid-induced seizures: potentiation by alpha-methyl-p-tyrosine.

    abstract::We have investigated the influence of central noradrenergic and dopaminergic systems on the susceptibility of rats to seizures in the kainic acid (KA)-model of epilepsy. In the dose range of 0.75 to 10 mg/kg s.c., KA dose-dependently induced characteristic behavioural changes. Partial depletion of noradrenaline (NA) a...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(89)90219-9

    authors: Baran H,Hörtnagl H,Hornykiewicz O

    更新日期:1989-08-28 00:00:00

  • A consideration of sensory factors involved in motor functions of the basal ganglia.

    abstract::There is a sizeable literature concerning basal ganglia (BG) functioning that is based on data from experiments employing a method of analysis that is traditionally used with other motor areas. A brief review of this literature is presented and the following conclusion is reached: as compared to the success of traditi...

    journal_title:Brain research

    pub_type: 杂志文章,评审

    doi:10.1016/0165-0173(85)90010-4

    authors: Lidsky TI,Manetto C,Schneider JS

    更新日期:1985-06-01 00:00:00

  • Caspase activation contributes to astrogliosis.

    abstract::Caspases, a family of cysteine proteases, are widely activated in neurons and glia in the injured brain, a response thought to induce apoptosis. However, caspase activation in astrocytes following injury is not strongly associated with apoptosis. The present study investigates the potential role of caspase activation ...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/j.brainres.2012.02.056

    authors: Aras R,Barron AM,Pike CJ

    更新日期:2012-04-23 00:00:00

  • The expression of a high level of morphine antinociceptive tolerance in mice involves both PKC and PKA.

    abstract::We have previously reported that intracerebroventricular (i.c.v.) injection of either a PKC or PKA inhibitor completely reversed the expression of 5- to 8-fold morphine antinociceptive tolerance. We developed a model of 45-fold morphine tolerance that included a 75-mg morphine pellet and twice daily morphine injection...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/s0006-8993(03)03170-6

    authors: Smith FL,Javed RR,Elzey MJ,Dewey WL

    更新日期:2003-09-19 00:00:00

  • Differential influence of posture and intentional movement on human somatosensory evoked potentials evoked by different stimuli.

    abstract::Somatosensory evoked potentials (SEP) recorded from humans were elicited by a cutaneous shock to the index finger or with a ramp displacement of the finger that stretched the first dorsal interosseous muscle. A somatosensory stimulus was presented while a subject maintained a steady posture of the metacarpophalangeal ...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(89)91068-8

    authors: Dimitrov B,Hallett M,Sanes JN

    更新日期:1989-09-04 00:00:00

  • Experimental intracerebral hematoma in the rat: characterization by sequential magnetic resonance imaging, behavior, and histopathology. Effect of albumin therapy.

    abstract::We characterized acute intracerebral hemorrhage (ICH) in the rat by sequential magnetic resonance imaging (MRI) and correlated MRI findings with neurobehavior and histopathology. In addition, we investigated whether albumin treatment would reduce ICH-induced brain injury. ICH was produced in rats by a double-injection...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/j.brainres.2007.04.077

    authors: Belayev L,Obenaus A,Zhao W,Saul I,Busto R,Wu C,Vigdorchik A,Lin B,Ginsberg MD

    更新日期:2007-07-09 00:00:00

  • Bilirubin does not modulate ionotropic glutamate receptors or glutamate transporters.

    abstract::Bilirubin, a product of haemoglobin metabolism, has been suggested to damage neurons by increasing activation of N-methyl-D-aspartate (NMDA) receptors when it reaches high levels in the blood [15,19], as occurs in neonatal jaundice [7]. Bilirubin is also generated in the brain following synthesis of the messenger carb...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/s0006-8993(00)02676-7

    authors: Warr O,Mort D,Attwell D

    更新日期:2000-10-06 00:00:00

  • The ontogeny of substance P fibers in the mouse trigeminal nerve.

    abstract::The putative neurotransmitter substance P was localized in the embryonic and neonatal mouse trigeminal nerve by indirect immunofluorescence. Central terminals in the nucleus caudalis gave a positive substance P-like immunofluorescence (SPLI) reaction of E13-E14. SPLI subsequently appeared in the peripheral mucous and ...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0165-3806(82)90147-x

    authors: Mohamed SS,Atkinson ME

    更新日期:1982-07-01 00:00:00

  • GM1 and ERK signaling in the aged brain.

    abstract::We investigated the ability of GM1 to induce phosphorylation/activation of the extracellular-regulated protein kinases (ERKs) in the striatum, hippocampus and frontal cortex of aged male Sprague-Dawley rats. Three different treatment paradigms were used: a single application of GM1 to brain slices in situ, a single in...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/j.brainres.2005.06.068

    authors: Mo L,Ren Q,Duchemin AM,Neff NH,Hadjiconstantinou M

    更新日期:2005-08-30 00:00:00

  • Influence of the radioprotective agent WR 2721 on the striatal acetylcholinesterase activity in the rat.

    abstract::The radioprotective thiophosphate S-2(3 amino-propyl-amino) phosphorothioic acid (WR 2721) induced an early reduction of striatal acetylcholinesterase activity followed by an increase, when intraperitoneally injected to rats, although it does not cross the blood-brain barrier. These results were obtained using an orig...

    journal_title:Brain research

    pub_type: 杂志文章

    doi:10.1016/0006-8993(93)90788-o

    authors: Clarençon D,Galonnier M,Testylier G,Fatôme M

    更新日期:1993-04-09 00:00:00