Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Accessory olfactory learning (1991)
    Springer
    Biological cybernetics 64 (1991), S. 301-305 
    Details
    ISSN: 1432-0770
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Computer Science , Physics
    Notes: Abstract Learning in the accessory olfactory bulb is modelled mathematically by means of a set of coupled oscillator equations to describe the ongoing activity. The modification of this activity by experience is shown to lead to a change of the transfer function of the AOB as an input-output device. This leads both to a test of the model and a means of discovering how the later stages of the brain may use the AOB output. Our discussion is limited to a specific form of learning in the mouse, but may have more general applicability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00199593
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Control of Synthesis and Release of Oxytocin in the Sheep Brain (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 652 (1992), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1992.tb34349.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Reduction of sexual interaction in rhesus monkeys by a vaginal action of progesterone (1976)
    [s.l.] : Nature Publishing Group
    Nature 263 (1976), S. 606-608 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Ovariectomised female and intact male adult rhesus monkeys (M. mulatto) were used. The females were implanted subcutaneously with silastic tubing (Dow Corning, 4 cm long, 3.35 mm inner and 4.65 mm outer diameters) filled with oestradiol-17?, which results in plasma levels of oestradiol similar to ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/263606a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Localization of Nitric Oxide Synthase in the Mouse Olfactory and Vomeronasal System: a Histochemical, Immunological and In Situ Hybridization Study (1993)
    Oxford, UK : Blackwell Publishing Ltd
    European journal of neuroscience 5 (1993), S. 0 
    Details
    ISSN: 1460-9568
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The distribution of nitric oxide synthase (NOS) in the mouse olfactory bulb and olfactory epithelium, including the vomeronasal organ, was studied using an anti-NOS antibody, NADPH diaphorase histochemistry and in situ hybridization with NOS specific antisense oligonucleotide probes. Interneurons containing NOS protein and mRNA, and exhibiting NADPH diaphorase activity were detected in the plexiform layer of the main olfactory bulb and the granule cell layer of main and accessory olfactory bulbs. Periglomerular cells and granule cells in the main olfactory bulb were also NOS positive with diaphorase and immunostaining for NOS. In contrast, no evidence for NOS expression was found either in the main olfactory epithelium or in the vomeronasal organ, in spite of the strong diaphorase staining of the surface of the main olfactory epithelium. Polymerase chain reaction amplification experiments for detection of NOS gene expression further indicated that NOS is expressed in the olfactory bulb but not in either the main olfactory epithelium or vomeronasal organ. Use of an antibody raised against another enzyme, NADPH-P450 oxidoreductase, showed that this protein was strongly expressed in the olfactory epithelium. Activity of this enzyme may account for the diaphorase histochemical staining of the epithelia. An involvement of neuronal nitric oxide synthase in signalling in olfactory receptor neurons is therefore doubtful, although NOS is clearly expressed in neurons in both main and accessory olfactory bulbs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-9568.1993.tb00236.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Low molecular weight constituents of male mouse urine mediate the pregnancy block effect and convey information about the identity of the mating male (2003)
    Oxford, UK : Blackwell Science, Ltd
    European journal of neuroscience 18 (2003), S. 0 
    Details
    ISSN: 1460-9568
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Mouse urine contains a complex mixture of chemosignals including a variety of small volatile molecules that are bound to major urinary proteins. In addition to signalling maleness, male urine also conveys information about individuality, which allows recently mated female mice to distinguish the urinary chemosignals of the mating male from those of an unfamiliar male. The highly polymorphic nature of the major urinary proteins makes them a likely candidate for conveying individuality information in the context of the pregnancy block effect. This was investigated by comparing the pregnancy-blocking effectiveness of a high molecular weight urinary fraction, containing major urinary proteins, with that of a low molecular weight fraction containing volatile ligands. Not only was the high molecular weight fraction ineffective in blocking pregnancy, but it also appeared to be less important in signalling individuality than the low molecular fraction. The high molecular weight fraction was ineffective in inducing expression of the immediate early gene product egr-1 in the accessory olfactory bulb. In contrast, the low molecular weight fraction induced egr-1 expression in the mitral/tufted neurons in the anterior subregion of the accessory olfactory bulb, suggesting that they activate the V1R class of vomeronasal receptor neuron.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1460-9568.2003.02790.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Previous maternal experience potentiates the effect of parturition on oxytocin receptor mRNA expression in the paraventricular nucleus (1999)
    Oxford, UK : Blackwell Science Ltd
    European journal of neuroscience 11 (1999), S. 0 
    Details
    ISSN: 1460-9568
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In sheep, central oxytocin release at parturition induces maternal behaviour which is thought to be mediated by changes in the expression of central oxytocin receptors. The distribution, effects of parturition, previous maternal experience and hormonal status on the distribution of an oxytocin receptor was investigated using immunocytochemistry and in situ hybridization. In ewes with no previous maternal experience, parturition induced significant increases in oxytocin receptor mRNA expression in the anterior olfactory nucleus, medial preoptic area, ventromedial hypothalamus, lateral septum, medial amygdala, bed nucleus of the stria terminalis and diagonal band of Broca. In maternally experienced ewes, parturition induced additional increases in two areas, the paraventricular nucleus and the Islands of Calleja. The changes in progesterone and oestrogen that occur during late pregnancy and parturition appear to contribute to increases in expression in the anterior olfactory nucleus, Islands of Calleja, medial preoptic area, ventromedial hypothalamus, bed nucleus of the stria terminalis and diagonal band of Broca, but not in the paraventricular nucleus, lateral septum and medial amygdala. These results demonstrate that progesterone and oestrogen priming enhance oxytocin receptor mRNA expression in a number of regions in the olfactory system, hypothalamus and limbic brain. These effects appear to be independent of maternal experience. Parturition increases oxytocin receptor mRNA expression in all the areas influenced by hormonal priming and the lateral septum, medial amygdala and paraventricular nucleus. Maternal experience also enhances expression of oxytocin receptor mRNA in the paraventricular nucleus and the Islands of Calleja. Because the paraventricular nucleus is the main source of oxytocin release in the brain, this upgrading of autoreceptors as a result of maternal experience may serve to enhance release of this peptide in projection sites regulating maternal behaviour.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1460-9568.1999.00782.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Changes in Pro-Opiomelanocortin and Pre-proenkephalin mRNA Levels in the Ovine Brain during Pregnancy, Parturition and Lactation and in Response to Oestrogen and Progesterone (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neuroendocrinology 5 (1993), S. 0 
    Details
    ISSN: 1365-2826
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In the female sheep opioids act centrally to influence both oxytocin release and maternal behaviour. We have used in situ hybridization histochemistry to investigate the changes in mRNA expression of the two opioid precursor genes, proopiomelanocortin (POMC) and pre-proenkephalin (PPE), in discrete hypothalamic nuclei as a function of pregnancy, parturition and lactation and following treatment with oestrogen and progesterone. Quantitative in situ hybridization histochemistry demonstrated that POMC mRNA expression in the arcuate nucleus (ARC) decreased at parturition and increased during lactation compared to late pregnant and ovariectomized animals. Oestradiol and progesterone treatments increased POMC mRNA expression compared to ovariectomized controls. Pre-proenkephalin mRNA expression was quantified in three discrete hypothalamic nuclei, the ventromedial nucleus (VMN), the paraventricular nucleus (PVN) and the suprachiasmatic nucleus (SCN). In the VMN, PPE mRNA expression increased during lactation compared to late pregnancy and parturition. Expression levels during late pregnancy and parturition were decreased compared to ovariectomized animals. Oestradiol increased, and progesterone decreased, PPE mRNA levels compared to ovariectomized controls. Combined progesterone followed by oestrogen treatment produced significant increases in PPE mRNA expression. In the PVN, PPE expression increased at parturition compared to late pregnant, lactating and ovariectomized animals. Expression levels in late pregnant animals were decreased compared to lactating or ovariectomized ones. However, sex steroid treatment produced no changes in PPE expression in the PVN. No changes were observed in PPE mRNA expression in the SCN in response to any of the experimental conditions. This data shows that both POMC and PPE mRNA levels are altered in the sheep brain during pregnancy, parturition and lactation and in response to sex steroids, although the direction of the changes is not always the same and in the case of PPE only the VMN and PVN are affected. Levels of gene expression found following exogenous steroid treatment do not precisely mirror those found during pregnancy, parturition and lactation and this suggests that factors other than changing sex steroids levels are involved. In the context of maternal behaviour it is interesting to note that PPE mRNA expression increases at parturition in the PVN when oxytocin mRNA expression levels are also increased.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2826.1993.tb00544.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Changes in Oxytocin Immunoreactivity and mRNA Expression in the Sheep Brain during Pregnancy, Parturition and Lactation and in Response to Oestrogen and Progesterone (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neuroendocrinology 5 (1993), S. 0 
    Details
    ISSN: 1365-2826
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The effects of pregnancy, parturition and lactation and exogenous treatments with oestradiol and progesterone on oxytocin (OXY) immunoreactivity and gene expression in the sheep brain were investigated. Immunocytochemistry was used to demonstrate that increased OXY-immunoreactivity occurred in cells of the paraventricular (PVN) and supraoptic nuclei (SON), the bed nucleus of the stria terminalis (BNST), the anterior commissural nuclei (ACN) and the periventricular part of the medial preoptic area (PvMP). Oxytocin immunoreactive terminals were also seen in the accessory olfactory nucleus, the glomerular and peri-glomerular layers of the olfactory bulb, the lateral septum, the zona incerta and the pars compacta of the substantia nigra. Compared to ovariectomized and late pregnant animals, the intensity of immunoreactivity was increased in all of these oxytocinergic elements at parturition, during lactation and following exogenous treatment with oestradiol. The OXY-immunoreactivity was also more intense in late pregnant animals compared to ovariectomized ones. Quantitative in situ hybridization histochemistry showed that cells in the PVN, SON, BNST and PvMP all showed significantly increased expression of OXY mRNA in animals at parturition and during lactation compared to late pregnant or ovariectomized animals. Expression levels in late pregnant animals were also significantly higher than in ovariectomized ones. Progesterone treatment significantly increased OXY mRNA in the PVN, SON, BNST and PvMP whereas oestradiol treatment was only effective in the PVN, BNST and PvMP. Combined treatment with these steroids did not significantly increase OXY mRNA levels in comparison with their administration alone.These results show that OXY-immunoreactivity and mRNA expression are at their highest in the sheep brain when maternal behaviour is induced. The increased synthesis/storage of the peptide at parturition may be due to changes in circulating concentrations of both progesterone and oestradiol during late pregnancy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2826.1993.tb00505.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Pheromones in mice: reciprocal interaction between the nose and brain (1982)
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 148-150 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the first experiment, female mice (BALB/c), which had been housed alone for part of the experiment, were taken from their home cage and placed with BALB/c stud males for 20 min to allow mating. They were then removed to cages containing FI male bedding while the stud male was returned to the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/296148a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Biological Sciences: Identification of Primate Sexual Pheromones and the Properties of Synthetic Attractants (1971)
    [s.l.] : Nature Publishing Group
    Nature 232 (1971), S. 396-398 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Behaviourally active constituents of vaginal secretions can be extracted into ether4. A solution prepared by washing ether extracts with N/100 sodium hydroxide, acidifying the alkaline layer and re-extracting into ether, retained behavioural activity: results which suggest that these active ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/232396a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...