Download Biological Clock in Fish by Ewa Kulczykowska, Wlodzimierz Popek, B.G. Kapoor PDF

By Ewa Kulczykowska, Wlodzimierz Popek, B.G. Kapoor

ISBN-10: 1578086752

ISBN-13: 9781578086757

Each one organism has its personal inner organic clock, that is reset through environmental cues (Zeitgebers), therefore retaining it synchronized with the exterior atmosphere. it's a chemically dependent oscillating approach inside cells, hoping on molecular suggestions loops. Circadian organic clocks exist in such a lot organisms. what's so distinct in regards to the clock in fish? the place is it located—in the retina, contained in the mind, or within the pineal? what's the molecular foundation of its functionality? How is the clock capable of hold time within the absence of environmental cues? even though organic clocks were intensively studied over the last 4 a long time, just recently have the instruments had to learn the molecular foundation of circadian rhythms develop into to be had. This e-book stories the country of information in enough element and offers the newest contributions to the sector, displaying fish supply a distinct version of the circadian organic clock.

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Extra resources for Biological Clock in Fish

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Martin, J. Brun-Marmillon, B. P. Collin. 1991. Regulation of melatonin production by catecholamines and adenosine in a photoreceptive pineal organ. An in vitro study in the pike and the trout. Journal of Pineal Research 11: 123–134. , V. P. Ravault, D. A. P. Collin. 1994. Rhythmic secretion of melatonin by the superfused pike pineal organ: thermo- and photoperiod interaction. Neuroendocrinology 60: 535–543. , L. Besseau, M. Fuentès, S. Sauzet, E. Magnanou and G. Boeuf. 2009. Structural and functional evolution of the pineal melatonin system in vertebrates.

1998. Inhibitors of messenger RNA and protein synthesis affect differently serotonin arylalkylamine N-acetyltransferase activity in clock-controlled and non-clock-controlled fish pineal. Brain Research 797: 109–117. , C. L. Blazquez, H. Vaudry, N. P. Collin. 1990. Atrial natriuretic factor increases cyclic GMP and cyclic AMP levels in a directly photosensitive fish pineal organ. Pflügers Archiv European Journal of Physiology 417: 243–245. , C. Thibault, C. Martin, J. Brun-Marmillon, B. P. Collin.

4). , 2007). , 2009). Thus, under LL or DD, AANAT2 mRNA abundance (as well as TpOH mRNA abundance) continues to be rhythmic with a period that approximates 24 h (Fig. 4); so is the case with AANAT2 protein amount and activity but only under DD, because AANAT2 protein is degraded under LL. , 1997). , 1997). The damping observed at low or high densities could result from uncoupling between the cellular circadian units. Uncoupling could be due to lack of cellular communication at low density, or accumulation of some uncoupling agent at high density.

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