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  • 1
    ISSN: 1365-2516
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary.  The rare coagulation disorders are heritable abnormalities of haemostasis that may present significant difficulties in diagnosis and management. This review summarizes the current literature for disorders of fibrinogen, and deficiencies of prothrombin, factor V, FV + VIII, FVII, FX, the combined vitamin K-dependent factors, FXI and FXIII. Based on both collective clinical experience and the literature, guidelines for management of bleeding complications are suggested with specific advice for surgery, spontaneous bleeding, management of pregnancy and the neonate. We have chosen to include a section on Ehlers-Danlos Syndrome because haematologists may be consulted about bleeding manifestations in such patients.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neuroendocrinology 3 (1991), S. 0 
    ISSN: 1365-2826
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The effects of intravenous injection of porcine relaxin on the pulsatile secretion of luteinizing hormone (LH) were investigated in conscious rats. In untreated, ovariectomized animals, relaxin at doses 2.5 to 10/μg/rat caused a dose-dependent suppression of pulsatile release of LH. At 5μg relaxin, pulses were suppressed for approximately 60 min and there was a significant (P〈0.05) fall in mean plasma LH levels. Pulses returned with the same frequency as the pretreatment period but amplitude and nadir of these pulses were significantly (P〈0.05) reduced at doses 〉2.5μg/rat. In ovariectomized rats pretreated with either estradiol or progesterone alone, relaxin did not alter plasma LH levels. In contrast, injection of 5μg relaxin in rats primed with a combination of estradiol and progesterone caused a 90% increase in circulating LH levels. Intracerebroventricular infusion of a specific angiotensin II antagonist blocked the inhibitory effect of relaxin on LH release in untreated, ovariectomized rats and negated the stimulatory effect of relaxin on LH release in estradiol-progesterone-primed, ovariectomized rats. The results demonstrate that acute injections of porcine relaxin in ovariectomized rats suppress the pulsatile release of LH. This effect is blocked when the central angiotensinergic system is compromised suggesting that relaxin might act through the central angiotensin system. The findings are in agreement with other studies that indicate relaxin activates the central angiotensin system. It is also possible that relaxin may act at the level of the adenohypophysis to alter secretion of LH but data in the present study suggest that this may not be a significant site of relaxin action.
    Type of Medium: Electronic Resource
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