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  • Blackwell Science Ltd  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Aquaculture research 30 (1999), S. 0 
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: At the present time, there is little information concerning the effect of transport on the physiology of scallops. Therefore, the overall objective of this study was to use the adenylic energetic charge (AEC) as an indicator of stress in scallops. Three transport trials were carried out: dry transport in polystyrene boxes containing seaweed and transport by vivier lorry at various densities. Post-transport scallop mortality was low for all trials, but the AEC results showed that scallop stress was reduced when animals were transported by vivier truck compared with dry transport. AEC levels in scallops remained high after 24.75 h of vivier transport in trial 2 (0.54–0.69) and after 17 h of vivier transport in trial 3 (0.79–0.82), whereas after 12 h of dry transport in trial 1, AEC levels in the striated muscle had decreased to 0.42. Ammonia concentration increased throughout the trials but did not appear to affect scallop survival in the short term. In general, the results indicate that greater survival can be achieved over longer distances (greater than 17 h) and at higher densities by vivier truck. However, better stability of holding units within tanks and a method to regulate ammonia and pH levels are needed if greater densities are used.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1440-1797
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The enzyme 11β hydroxysteroid dehydrogenase type 2 (11βHSD2) converts glucocorticoids to their 11-keto metabolites, permitting binding of aldosterone to the non-selective mineralocorticoid receptor. Recent studies have suggested that 11βHSD deficiency may be implicated in essential hypertension and renal disease. Using an antibody against a peptide deduced from the cDNA sequence, the renal expression of 11βHSD2 was examined in patients with advanced stages of renal disease and associated hypertension, patients with primary hypertension resulting in renal damage, and patients with preserved or mildly damaged renal architecture without concomitant hypertension. Despite variable degrees of tubulointerstitial damage, 11βHSD2 was expressed in distal convoluted tubules and collecting ducts in all patient groups. Collapsed tubules retained strong immunoreactivity, but decreased staining was apparent in dilated tubules. There was weak staining of the thick ascending limb of Henle. Variable glomerular expression of 11βHSD2 was observed. Our results therefore suggest that absence of renal 11βHSD2 is not a prominent feature of hypertensive nephrosclerosis, or primary renal disease associated with hypertension.
    Type of Medium: Electronic Resource
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