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  • Lymphoma  (2)
  • 6-hydroxydopamine  (1)
  • Amezinium  (1)
  • Atomic physics  (1)
  • 1
    ISSN: 0375-9474
    Keywords: Atomic physics
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1433-3023
    Keywords: Amezinium ; Estrogen ; Progesterone ; Rabbit urethra
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effect of amezinium, a new antihypotensive agent, and hormonal treatment on the female rabbit urethra was investigated. Cumulative dose responses were obtained for amezinium and norepinephrine on strips of muscle from the urethras of ovariectomized female rabbits by means of the tissuebath system. Amezinium enhanced the response to electrical field stimulation and showed a direct contractile response on the urethra. These responses were only about 20% of the maximum norepinephrine response. The contractile response to amezinium was completely blocked by prazosin. When rabbits were pretreated with estrogen, with or without progesterone, for 4 weeks, the response to amezinium increased to 40% of the maximum norepinephrine response. Although amezinium enhances muscle contractile responses to electrical stimulation, this effect is strong when amezinium is used alone; concurrent estrogen treatment improves the effects of amezinium.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 48 (1992), S. 667-671 
    ISSN: 1420-9071
    Keywords: Catecholamine ; vas deferens ; adrenal gland ; 6-hydroxydopamine ; alpha-methyl-para-tyrosine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: 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.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 29 (1987), S. 389-392 
    ISSN: 1432-1920
    Keywords: Lymphoma ; Limbic system ; Metastasis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two cases of metastatic malignant lymphoma confined to the limbic-hypothalamic region are presented. The non-specific nature of the neurological symptoms associated with these lesions such as memory loss, impotence and confusion made neurological localization of the disease process difficult. While non-contrast computed tomography (CT) was unremarkable, contrast CT was diagnostic, showing bilateral homogenous enhancement of specific limbic-hypothalamic structures without significant mass effect. Since lymphomatous involvement of the limbic-hypothalamic area tends to be infiltrative without attendant mass effect, detection of metastasis may be elusive unless special attention is directed to this region. As lymphoma is often chemoresponsive and highly radiosensitive, early recognition of limbic-hypothalamic involvement of this disease is important.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 24 (1983), S. 225-228 
    ISSN: 1432-1920
    Keywords: Lymphoma ; Metastases ; Cerebellopontine angle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Systemic malignant lymphoma rarely produces solitary metastasis to the brain. We report such a case in the cerebellopontine (CP) angle mimicking an acoustic neurinoma. CT scan showed a large, round mass in the CP angle which enhanced homogeneously following contrast infusion. The internal auditory meatus appeared to be eroded. The clinical, radiological, and pathological findings are presented.
    Type of Medium: Electronic Resource
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