Temperature-induced homeoviscous adaptation of chinese hamster ovary cells
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Fatty acid composition in native bees: Associations with thermal and feeding ecology
2018, Comparative Biochemistry and Physiology -Part A : Molecular and Integrative PhysiologyCitation Excerpt :Therefore, based on the homeoviscous adaptation (HVA) hypothesis, organisms experiencing colder temperatures should have higher UFA:SFA (to maintain fluidity and functionality of lipid containing structures), whereas organisms experiencing warmer conditions should favor SFAs for their increased energy yield (although the quantity may vary with tissue under study). The basic predictions of the HVA hypothesis (Sinensky, 1974) have been tested and appear to hold for diverse organisms (Anderson et al., 1981; Carey and Hazel, 1989; Fudge et al., 1998; reviewed in Hazel, 1995; Holmstrup et al., 2007; Raynard and Cossins, 1991) including insects (Atapour et al., 2007; Barlow, 1964; Fast, 1966; van Dooremalen and Ellers, 2010). Insects often show strong shifts in fatty acid (FA) composition in response to temperature (e.g. Hahn and Denlinger, 2011; see Hazel, 1995; Kostal and Simek, 1998), likely in part because, as small ectotherms they have limited scope for decoupling body temperature from environmental temperature and therefore must cope physiologically with environmental temperature fluctuations.
Mammalian phospholipid homeostasis: Homeoviscous adaptation deconstructed by lipidomic data driven modelling
2015, Chemistry and Physics of LipidsCitation Excerpt :Disentangling the different transcriptional and post-translational control mechanisms within phospholipid homeostasis is an ongoing challenge that requires new analytical tools suited to systematically analyse the large number of molecular species that make up omic data sets. The strength of the correlation between membrane order and lipid composition has led to several metrics of HVA, such as the ratiosats/unsats, the unsaturation index or the PC/PE ratio being used to infer changes in cellular membrane fluidity (Anderson et al., 1981; Bernabé Bloj et al., 1973; Calder et al., 1990; Cooper et al., 2014; Ozawa, 2011; Yu et al., 2014) and the mechanisms by which such changes occur. It should be noted that as early as 1986, Cossins and Macdonald (1986) demonstrated that the ratiosats/unsats and the unsaturation index are not a perfect metric for HVA, concluding that it is likely that these measures do not take account of many of the subtleties of the relationship between lipid composition and membrane order.
Acyl-CoA dehydrogenase drives heat adaptation by sequestering fatty acids
2015, CellCitation Excerpt :Unsaturated double bonds in lipids generate kinks into the otherwise straightened acyl hydrocarbon chain and thereby increase membrane fluidity. This fundamental process of maintaining membrane fluidity is called homeoviscous adaptation (HVA) and occurs in bacteria, archaea, and eukaryotes (Anderson et al., 1981; Cossins and Prosser, 1978; Shmeeda et al., 2002; Sinensky, 1974). A two-component regulatory system mediates HVA in bacteria (Aguilar et al., 2001; de Mendoza, 2014; Holthuis and Menon, 2014; Zhang and Rock, 2008).
Cholesterol increases the thermal stability of the Ca<sup>2+</sup>/Mg<sup>2+</sup>-ATPase of cardiac microsomes
1996, Biochimica et Biophysica Acta - BiomembranesHeat stress lipids and schizophrenia
1996, Prostaglandins Leukotrienes and Essential Fatty Acids
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Present address: MRC Cyclotron Unit, Hammersmith Hospital, London W12 OHS, U.K.
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Present address: Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, U.S.A.