INT38563
From wiki-pain
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Sentences Mentioned In
Key: | Protein | Mutation | Event | Anatomy | Negation | Speculation | Pain term | Disease term |
ISH first showed that chronic morphine treatment inhibited the oxytocin synthesis in SON but not in PVN. | |||||||||||||||
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Sexual impotence is associated with a reduced production of oxytocin and with an increased production of opioid peptides in the paraventricular nucleus of male rats. | |||||||||||||||
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Chronic morphine treatment inhibits oxytocin synthesis in rats. | |||||||||||||||
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Subcutaneous injection of oxytocin (OXT-(1-9)) and of its behaviorally active fragments desglycinamide9-oxytocin (OXT-(1-8)) and [pGlu4,Cyt6]-oxytocin-(4-8) (OXT-(4-8)) decreased the amount of heroin self-injected. | |||||||||||||||
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Keeping oxytocin neurons under control during stress in pregnancy. | |||||||||||||||
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Focussing on an immune challenge model (since infection is a major cause of preterm labour in women), we have found that the responsiveness of oxytocin neurons to IL-1beta is markedly suppressed in late pregnancy. | |||||||||||||||
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Naloxone reveals oxytocin secretion unrestrained by endogenous opioids, therefore it appears that there is an opioid-independent reduction in the excitatory coupling of the AV3V input to oxytocin neurones which may explain the reduced osmoresponsiveness of oxytocin neurones at the end of pregnancy. | |||||||||||||||
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Here we show that in sexually impotent rats there is a reduced expression of oxytocin mRNA and an increased expression of proenkephalin and pro-dynorphin mRNA in the paraventricular nucleus of hypothalamus (PVN), a brain structure of key importance for sexual behavior. | |||||||||||||||
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Interestingly, some of these reward orexigens, such as opioids, diminish activity of neurons synthesizing oxytocin, a nonapeptide that promotes satiety and feeding termination. | |||||||||||||||
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Plasma oxytocin levels 40 min after delivery of the first fetus were 45.25 +/- 3.6 pmol/l (mean +/- S.D.) in unoperated controls and significantly (P less than 0.01) depressed (23.89 +/- 3.9) in rats that delivered during infusion of relaxin. | |||||||||||||||
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Quite interestingly, some authors observed a decrease in the gene expression of oxytocin and oxytocin receptors in the heart of young diabetic mice [157]. | |||||||||||||||
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Coronal hypothalamic sections were used for evaluation of Fos, AVP and OT expression by immunohistochemistry. | |||||||||||||||
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Selective, bilateral destruction of the PVN resulted in a parallel depression in levels of ir-VP, ir-OT, ir-dynorphin (DYN), ir-DYN and ir-alpha-neo-endorphin (alpha-NE) in the neurointermediate lobe of the pituitary, whereas in its anterior counter-part no decrease in the content of any of these peptides was seen. | |||||||||||||||
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Quite interestingly, some authors observed a decrease in the gene expression of oxytocin and oxytocin receptors in the heart of young diabetic mice [157]. | |||||||||||||||
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Lesions of the hypothalamic paraventricular nucleus depleted levels of immunoreactive-vasopressin and -oxytocin throughout the cord whereas levels of the opioid peptides therein were unaffected. | |||||||||||||||
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However, OT did not reproduce the reduction of interspike interval, suggesting the involvement of an additional mechanism. | |||||||||||||||
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Alternatively, differences in OT production might be lost as a result of the changing social environment, from a nest with contact with parents to housing with a single sibling. | |||||||||||||||
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It is possible that alterations in OT-IR were not observed in adult prairie voles because some aspect of physiological and neural maturation from weanling to adult reduces any differences in OT production. | |||||||||||||||
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Previous studies have demonstrated that neonatal manipulation of OT affects the central production of OT [2] and the number and distribution of ER? | |||||||||||||||
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General Comments
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