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Calcium cycle

The Calcium Cycle. Bill Duesing, Yale-New Haven Teachers Institute, http //www.cis.yale.edU/ynhti/curriculum/units/1985/7/85.07.08.x.html... [Pg.62]

Carafoli, E. (1979) The calcium cycle of mitochondria, FEBS Letts., 104, 1-5. [Pg.195]

Skulan JL, DePaolo DJ, Owens TL (1997) Biological control of calcium isotopic abundances in the global calcium cycle. Geochim Cosmochim Acta61 2505-2510... [Pg.101]

To relate the isotopic composition of marine calcium to variations in the calcium cycle requires characterization of the 5 Ca values of the sources and sinks of Ca to the oceans, and estimates of the Ca fluxes. Neither is well documented presently. Estimates of the calcium fluxes from Milliman (1993) are shown in Table 3. There are six analyses of 5 Ca from mid-ocean ridge hydrothermal vents, and these average -1-0.2 + 0.2 (Zhu and MacDougall... [Pg.275]

Figure 15. Diagram showing the major components of the global calcium cycle with b Ca values (denoted as 5). The modem residence time of Ca in the oceans is about 1 million years (Holland 1978 1984). Abbreviations used are SW = seawater, Sed = sedimentation, clastic = clastic sediments, carb = marine carbonate sediments, hydrol = mid-ocean ridge hydrothermal systems, lith = continental lithosphere. Figure 15. Diagram showing the major components of the global calcium cycle with b Ca values (denoted as 5). The modem residence time of Ca in the oceans is about 1 million years (Holland 1978 1984). Abbreviations used are SW = seawater, Sed = sedimentation, clastic = clastic sediments, carb = marine carbonate sediments, hydrol = mid-ocean ridge hydrothermal systems, lith = continental lithosphere.
De La Rocha CL, DePaolo DJ (2000) Isotopic evidence for variations in the marine calcium cycle over the Cenozoic. Science 289(5482) 1176-1178... [Pg.285]

Skulan J, DePaolo DJ, Owens TL (1997) Biological control of calcium isotopic abundances in the global calcium cycle. Geochim Cosmochim Acta 61 2505-2510 Skulan J, DePaolo DJ (1999) Calcium isotope fractionation between soft and mineralized tissues as a monitor of calcium use in vertebrates. Proc Nat Acad Sci 96 13,709-13,713... [Pg.287]

Zhu P, Macdougall JD (1998) Calcium isotopes in the marine environment and the oceanic calcium cycle. Geochim Cosmochim Acta 62 1691-1698... [Pg.288]

De La Rocha C (2003) Sihcon isotope fractionation by marine sponges and the reconstruction of the silicon isotope composition of ancient deep water. Geology 31 423 26 De La Rocha CL, De Paolo DJ (2000) Isotopic evidence for variations in the marine calcium cycle over the Cenozoic. Science 289 1176-1178... [Pg.239]

Farkas J, Buhl D, Blenkinsop J, Veizer J (2007) Evolution of the oceanic calcium cycle during the late Mesozoic evidence from 5 / Ca of marine skeletal carbonates. Earth Planet Sci Lett 253 96-111... [Pg.242]

Ikeda Y, Hoshijima M, Chien KR Toward biologically targeted therapy of calcium cycling defects in heart failure. Physiology 2008 28 6. [Pg.318]

Figure 1. Calcium cycling in the heart The role of S100A1... Figure 1. Calcium cycling in the heart The role of S100A1...
Wehrens, X. H., and Marks, A. R. (2004a). Novel Therapeutic Approaches for Heart Failure by Normalising Calcium Cycling. Nat Rev Drug Discov 3 565-73. [Pg.319]

Furthermore, infection of adult rat myocytes with adenoviral vectors containing either wild-type or L39stop PLN cDNAs indicated that wild type PLN decreased the contractile parameters and calcium kinetics, compared to control cells infected with an adenovirus expression GFP. However, the PLN-L39stop did not alter myocyte mechanics or calcium cycling. [Pg.530]

Freeman, K., Lerman, I., Kranias, E.G., Bohlmeyer, T., Bristow, M.R., Lefkowitz, R.J., Iaccarino, G., Koch, W.J., and Leinwand, L.A. 2001. Alterations in cardiac adrenergic signaling and calcium cycling differentially affect the progression of cardiomyopathy. J. Clin. Invest. 107 967-974. [Pg.44]

This obvious dependence on extracellular calcium is somewhat unexpected because (1) the sustained enhancement of calcium influx rate is adequately balanced by an increase in calcium efflux rate so that (2) the calcium concentration in the bulk cytosol is maintained near the basal value. This apparent paradox may be resolved by a model [54] which postulates that during the sustained phase of cellular response the high rate of calcium cycling across the plasma membrane raises the calcium concentration in a region just below the plasma membrane, often called the submembrane domain (see Rasmussen and Barrett, Chapter 4). Because the elevated calcium level in this domain is not conducted into the bulk cytosol, it cannot activate calcium-dependent response elements in the cytosol. Rather it regulates the activity of calcium-sensitive, plasma membrane-associated enzymes such as the calcium pump and PKC, the previously described phospholipid-dependent, calcium-activated protein kinase. [Pg.224]

Fig. 2. Messengers mediating the initial and sustained phases of the All-induced cellular response. Initial phase All-elicited hydrolysis of PIP2 induces a transient rise in cytosolic calcium (via IP3), a transient activation of calcium-, calmodulin-dependent protein kinases, a transient increase in the phosphorylation of early-phase phosphoproteins (Pra-P), and a transient cellular response. Sustained response All-elicited hydrolysis of phosphoinositides generates a sustained increase in the diacylglycerol (DG) content of the plasma membrane. In conjunction with a sustained increase in plasma membrane calcium cycling, DG induces the sustained activation of protein kinase C (CK), the sustained increase in the phosphorylation of late-phase phosphoproteins (P -P) and the sustained cellular response. Fig. 2. Messengers mediating the initial and sustained phases of the All-induced cellular response. Initial phase All-elicited hydrolysis of PIP2 induces a transient rise in cytosolic calcium (via IP3), a transient activation of calcium-, calmodulin-dependent protein kinases, a transient increase in the phosphorylation of early-phase phosphoproteins (Pra-P), and a transient cellular response. Sustained response All-elicited hydrolysis of phosphoinositides generates a sustained increase in the diacylglycerol (DG) content of the plasma membrane. In conjunction with a sustained increase in plasma membrane calcium cycling, DG induces the sustained activation of protein kinase C (CK), the sustained increase in the phosphorylation of late-phase phosphoproteins (P -P) and the sustained cellular response.
Cromack, K., Sollins, P., Todd, R. L. et al. (1977). The role of oxalic acid and bicarbonate in calcium cycling by fungi and bacteria some possible implications for soil animals. Ecological Bulletin, 25, 246—52. [Pg.308]

Dijkstra, F. Smits, M. (2002). Tree species effects on calcium cycling the role of calcium... [Pg.323]

Bailey S. W., Buso D. C., and Likens G. E. (2003) Implications of sodium mass balance for interpreting the calcium cycle of a northern hardwood ecosystem. Ecology (in press). [Pg.4938]

BIOGEOCHEMICAL CYCLING OE MACROELEMENTS Table 31. Major fluxes of global calcium cycle. [Pg.157]

Pruvot EJ, Katra RP, Rosenbaum DS, Laurita KR. Role of calcium cycling versus restitution in the mechanism of repolarization alternans. Circ Res 2004 94(8) 1083-90. [Pg.18]

Figure 3.7. Coricepmai diagram iilasnacmg calcium cycle in forest watersheds. Inputs of calcium include weathering and atmospheric deposition of these weatijering is usually the greatest. U)sses of calciitm include tree accuinitJation and stream runoff. Under conditions of elevated acidic de x>sitfon stream losses increase, potentially depleting available calcium from the ecosystem, particularly ifom the soil exchange complex... Figure 3.7. Coricepmai diagram iilasnacmg calcium cycle in forest watersheds. Inputs of calcium include weathering and atmospheric deposition of these weatijering is usually the greatest. U)sses of calciitm include tree accuinitJation and stream runoff. Under conditions of elevated acidic de x>sitfon stream losses increase, potentially depleting available calcium from the ecosystem, particularly ifom the soil exchange complex...
See other pages where Calcium cycle is mentioned: [Pg.117]    [Pg.275]    [Pg.284]    [Pg.271]    [Pg.31]    [Pg.524]    [Pg.525]    [Pg.42]    [Pg.392]    [Pg.392]    [Pg.68]    [Pg.221]    [Pg.225]    [Pg.226]    [Pg.227]    [Pg.228]    [Pg.927]    [Pg.28]   
See also in sourсe #XX -- [ Pg.70 ]



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