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Your search keyword '"Depledge, M.H."' showing total 94 results
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94 results on '"Depledge, M.H."'

78. In situ monitoring of heart rates in shore crabs Carcinus maenas in two tidal estuaries: effects of physico-chemical parameters on tidal and diel rhythms.

Author

Styrishave, B., Andersen, O., and Depledge, M.H.

Subjects
CARCINUS maenas, HEART beat, CIRCADIAN rhythms, ESTUARIES
Abstract

Heart rates were monitored in situ in the shore crab, Carcinus maenas , in relation to variations in depth, salinity, oxygen tension, temperature, light intensity and pH. Experiments were performed in the Looe Estuary, Cornwall, England and in Batson Creek in the Salcombe-Kingsbridge Estuary, Devon, England. Experiments in the Looe Estuary were conducted in the vicinity of a storm water storage discharge whereas the experiments in Batson Creek were performed on a clean site. Tidal rhythms in heart rates were commonly detected but diel rhythms in heart rate were also observed frequently. Both types of rhythm were more evident in animals from Batson Creek than from Looe. In Batson Creek, 12 out of 15 crabs expressed tidal rhythms in heart rate, whereas 6 out of 15 crabs expressed diel rhythms. In the two studies in the Looe Estuary, 6 out of 15 crabs and 3 out of 15 crabs expressed tidal and diel rhythm in heart rate, respectively. At both experimental sites, heart rates were positively correlated with increasing changes in depth and salinity, whereas heart rates were negatively correlated with light intensity. In addition, heart rates appeared to be positively correlated with increasing oxygen tension in the experiments performed in the Looe Estuary. The study suggests that depth and oxygen availability are more important to in situ heart rates in shore crabs within tidal estuaries than are salinity, light intensity and pH. Also, sewage discharge appears to cause an acute increase in heart rate, which may affect expression of biological rhythms in shore crabs. [ABSTRACT FROM AUTHOR]

Published
2003
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79. Evaluation of chlorophyll fluorescence, in vivo spectrophotometric pigment absorption and ion...

Author

Cordi, B., Depledge, M.H., Price, D. N., Salter, L. F., and Donkin, M. E.

Subjects
*MARINE biology, *ABSORPTION spectra
Abstract

Presents a study in which the photosynthetic fluorescence ratio Fv:Fm, in vivo absorption spectra and ion leakage, were evaluated as biomarkers of ambient and elevated UV-B exposure of the intertidal alga, Enteromorpha intestinalis, and the sublittoral alga, Palmaria palmata. Materials and methodology used for the study; Results and discussion of the study.

Published
1997
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81. MISMATCHED FAMILY DONORS FOR BONE-MARROW TRANSPLANTATION AS TREATMENT FOR ACUTE LEUKAEMIA

Author

Powles, R.L., Kay, H.E.M., Clink, H.M., Barrett, A., Depledge, M.H., Sloane, J., Lumley, H., Lawler, S.D., Morgenstern, G.R., Mcelwain, T.J., Dady, P.J., Jameson, B., Watson, J.G., Leigh, M., Hedley, D., Filshie, J., and Robinson, B.

Abstract

35 patients were treated for acute myeloid leukaemia or acute lymphoblastic leukaemia with allogeneic bone-marrow grafts from a parent, child, or sibling who was mismatched at the major histocompatibility complex (MHC). 11 of these patients are alive at least 6 months after grafting, 5 of them after more than 2 years. Of the 15 patients aged under 20 at the time of the graft, 8 are alive and well 6 months to 3 years later. Cyclosporin A was given to all patients after grafting. 1 patient died of acute graft-versus-host disease and in 2 other cases this was a major factor in their death. Graft failure caused the death of 2 patients. 4 patients died of recurrent leukaemia. A fatal complication in 12 patients was pulmonary oedema, often associated with convulsions, intravascular haemolysis, and renal failure. Some of these patients had viral or bacterial infections, but in the majority the syndrome was not associated with demonstrable infection. This syndrome, in which the essential lesion appears to be vascular, was much more common in recipients of mismatched than matched grafts. 3 others died from lung disease in which infection was a factor.

Published
1983
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