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  • Life and Medical Sciences  (4)
  • Reserpine  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Role of splanchnic nerve on steroid-hormone-induced alteration of adrenomedullary catecholamines in untreated and reserpinized pigeon (1991)
    Springer
    Journal of comparative physiology 161 (1991), S. 598-601 
    Details
    ISSN: 1432-136X
    Keywords: Steroid hormones ; Reserpine ; Catecholamine ; Adrenal medulla ; Splanchnic nerve ; Pigeon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The aim of the present investigation was to ascertain (1) the effect of steroid hormones (corticosterone, dexamethasone, deoxycorticosterone, progesterone, testosterone and oestrogen) on the neural regulation of adrenomedullary catecholamine (CA) content, and (2) the neural modulation of the effect of glucocorticoid hormones (corticosterone and dexamethasone) on reserpine-induced resynthesis of CA. The experiment was conducted on unilaterally splanchnic-denervated pigeons. The findings revealed that 7 consecutive days of steroid treatments (2.5 mg·kg b.w.-1, i.m.) resulted in significant changes of CA content. Interestingly, the changes of epinephrine (E) content differed significantly between the innervated and denervated glands. This clearly indicates that the splanchnic nerve regulates steroid-induced alterations of E content in the pigeon. The results further revealed that the glucocorticoid hormones augmented reserpine-induced resynthesis of CA specifically in the innervated glands. This confirms that the splanchnic nerve is essential for the synergistic action of glucocorticoids and reserpine in accelerating resynthesis of CA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00260750
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nature of the inclusions in the lumbosacral neurons of birdsAided by National Science Foundation grant G-8805. (1962)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 143 (1962), S. 195-217 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1091430305
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Hypothalamic neurosecretion in relation to water deprivation in ploceids of arid and swampy zones (1967)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 123 (1967), S. 35-41 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The effects of 72 hours of dehydration on the hypothalamo-neuro-hypophyseal system have been compared in three avian species which originate from different climatic habitats but belong to the same genus, Lonchura. In L. malacca, which is an inhabitant of swampy, non-arid regions, the neurosecretory nuclei are activated and there is a depletion of neurosecretory material from the nuclear regions and neurosecretory tract, as well as from the neurohypophysis. In L. punctulata, an inhabitant of woods and grasslands, the supraoptic cells show signs of activation. To some extent, a depletion of the neurosecretory material is observed from the neurohypophysis. In the fibrous layer the continuity of the neurosecretory material along the tract is not maintained to such an extent as in the control. In L. malabrica, which lives in semi-arid regions, there is some activation of the supraoptic nuclei but there is little to no depletion of the aldehyde fuchsin-positive material from the neurohypophysis and the tract leading to it. The results of this investigation are indicative of a correlation between the neurosecretory mechanism and ecologic adaptation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051230104
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Histomorphic changes following chronic adrenocortical activation and inhibition in the pigeon (1970)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 130 (1970), S. 257-269 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Gravimetric and histologic modifications in the pigeon were studied following chronic therapy with ACTH and metopirone (SU 4885) for a period of 15 days. The organs studied were proventriculus, duodenum, heart, kidney, salivary gland, pancreas, liver, uropygial gland, thymus, spleen, bursa fabricii, testis, ovary, islets of Langerhans, adenohypophysis, thyroid and interrenal and chromaffin tissue of the adrenal gland. Induced states of hyper- and hypoadrenocorticalism elicited pathomorphic changes in endocrine and reproductive systems and some other organs of the pigeon. There were many differences and similarities in the nature of response of some organs following the two experimental conditions. Many of these cellular interactions might have resulted from alteration of interrenal function in the pigeon.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051300210
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Cellular modification of interrenal tissue induced by corticoid therapy and stress in three avian species (1972)
    New York, NY [u.a.] : Wiley-Blackwell
    American Journal of Anatomy 133 (1972), S. 483-493 
    Details
    ISSN: 0002-9106
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Corticotropic regulation of the interrenal tissue was explored in three avian species (quail, parakeet and myna) by application of dexamethasone therapy and stress. In response to corticoid administration, atrophy of all cortical layers from periphery to center was pronounced and no regional differences could be detected by histology and histometric analysis. Following exposure to acute formalin stress at the termination of chronic corticoid therapy, the interrenal tissue regularly responded by hypertrophy in all three types of birds. The absence of zonation in experimental atrophy in these species merits consideration in view of the zonal response observed in other avian species. The prompt response of the atrophic interrenal gland to stress indicates that the hypothalamo-hypophyseal regulation of the interrenal gland is qualitatively different from mammals.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aja.1001330409
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    Paper (German National Licenses)
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