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  • Artikel: DFG Deutsche Nationallizenzen  (2)
  • Bladder outlet obstruction  (1)
  • Catecholamine  (1)
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  • Artikel: DFG Deutsche Nationallizenzen  (2)
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  • 1
    ISSN: 1434-0879
    Schlagwort(e): Key words Prostatic hyperplasia ; Morphometry ; Bladder outlet obstruction ; Smooth muscle
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract To investigate the histological features of benign prostatic hyperplasia (BPH) with and without bladder outlet obstruction (BOO), 32 patients with symptomatic BPH, 22 with BOO and ten without BOO, were studied. The area density of smooth muscle, fibrous tissue, glandular epithelium, and glandular lumen in BPH adenoma resected by transurethral surgery was estimated using morphometric analysis. No differences were found in the area density of stromal and glandular components between the two groups. In the glandular component, neither the epithelium nor lumen differed between the two groups. However, the area density of smooth muscle in the obstructed group showed a decrease compared to that in the unobstructed group (P 〈 0.01). We conclude that a decreased proportion of smooth muscle in BPH adenoma may play an important role in BOO.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Cellular and molecular life sciences 48 (1992), S. 667-671 
    ISSN: 1420-9071
    Schlagwort(e): Catecholamine ; vas deferens ; adrenal gland ; 6-hydroxydopamine ; alpha-methyl-para-tyrosine
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract Experiments were carried out to elucidate the role of central catecholamines in regulating catecholamine metabolism in the vas deferens and adrenal gland of the rat. Rats were injected intracerebroventricularly (i.c.v.) with either vehicle or 6-hydroxydopamine (6-OHDA). Groups of animals pretreated with vehicle or 6-OHDA (i.c.v.) were injected intraperitoneally (i.p.) with alpha-methyl-para-tyrosine (AMT), a tyrosine hydroxylase inhibitor. Catecholamine turnover rates were estimated by determining norepinephrine or epinephrine content after administrating AMT. Central norepinephrine and dopamine contents decreased significantly (p〈0.05) after treatment with 6-OHDA and AMT. The norepinephrine content of the vas deferens of rats pretreated with 6-OHDA was markedly reduced (p〈0.001) after administration of AMT, whereas that of the vehicle-treated rats remained unchanged. Administration of 6-OHDA had no effect on the norepinephrine or epinephrine content of the adrenal gland. The present results indicate that central monoaminergic neurons have an inhibitory effect on the adrenergic neurons of the vas deferens. In contrast, this inhibitory regulation does not appear to be exerted on the adrenal glands.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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