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Harold Dodd 《BMJ (Clinical research ed.)》1944,2(4381):814-816
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Levels of androgens and oestradiol in dogfish, Scyliorhinus canicula , plasma, measured by radioimmunoassay, decrease markedly after ovariectomy (OVX). The magnitude and latency of these responses varies according to length of captivity preceding the operation and the time of year at which ovariectomy is performed. Androgens are cleared more rapidly than oestradiol from plasma following OVX, and levels of both steroids are reduced after laparotomy (LAP) in November but not in March. An extract of ventral lobes of the dogfish pituitary induces a significant increase in the circulating androgen levels in LAP fish but not in OVX fish, indicating that the ovary is the major site of androgen production in response to stimulation by dogfish gonadotrophin. Intramuscular injections of oestradiol benzoate (2.5 mg per fish) into LAP fish produce a significant reduction in the gonadotrophin content of the pituitary ventral lobe, measured in the quail testicular cell bioassay, when compared to LAP and unoperated controls. However, no significant changes in the gonadotrophin content of the ventral lobe were seen five days after OVX in June. 相似文献
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The interaction of glutamate dehydrogenase and malate dehydrogenase with phospholipid membranes 总被引:1,自引:0,他引:1
G H Dodd 《European journal of biochemistry》1973,33(3):418-427
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Rosalind J. Dodd David R. Chadwick Ian M. Harris Adrian Hines Dan Hollis Theodoros Economou Dylan Gwynn‐Jones John Scullion David A. Robinson David L. Jones 《Ecology letters》2021,24(1):60-72
Extreme weather events have become a dominant feature of the narrative surrounding changes in global climate with large impacts on ecosystem stability, functioning and resilience; however, understanding of their risk of co‐occurrence at the regional scale is lacking. Based on the UK Met Office’s long‐term temperature and rainfall records, we present the first evidence demonstrating significant increases in the magnitude, direction of change and spatial co‐localisation of extreme weather events since 1961. Combining this new understanding with land‐use data sets allowed us to assess the likely consequences on future agricultural production and conservation priority areas. All land‐uses are impacted by the increasing risk of at least one extreme event and conservation areas were identified as the hotspots of risk for the co‐occurrence of multiple event types. Our findings provide a basis to regionally guide land‐use optimisation, land management practices and regulatory actions preserving ecosystem services against multiple climate threats. 相似文献
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Laura S Mackay Sara Dodd Iain G Dougall Wendy Tomlinson James Lordan Andrew J Fisher Paul A Corris 《Respiratory research》2013,14(1):23