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Fatty acid cycling mechanism and mitochondrial uncoupling proteins.
Jezek P, Engstová H, Zácková M, Vercesi AE, Costa AD, Arruda P, Garlid KD. Jezek P, et al. Among authors: engstova h. Biochim Biophys Acta. 1998 Jun 10;1365(1-2):319-27. doi: 10.1016/s0005-2728(98)00084-x. Biochim Biophys Acta. 1998. PMID: 9693744 Free article. Review.
UCP-1 mediates a purine nucleotide-sensitive uniport of monovalent unipolar anions, including anionic fatty acids. The return of protonated fatty acid leads to H+ uniport and uncoupling. UCP-2 is probably involved in the regulation of body weight and energy balance, in fev …
UCP-1 mediates a purine nucleotide-sensitive uniport of monovalent unipolar anions, including anionic fatty acids. The return of protonated …
Antioxidant mechanism of mitochondria-targeted plastoquinone SkQ1 is suppressed in aglycemic HepG2 cells dependent on oxidative phosphorylation.
Ježek J, Engstová H, Ježek P. Ježek J, et al. Among authors: engstova h. Biochim Biophys Acta Bioenerg. 2017 Sep;1858(9):750-762. doi: 10.1016/j.bbabio.2017.05.005. Epub 2017 May 26. Biochim Biophys Acta Bioenerg. 2017. PMID: 28554565 Free article.
We elucidated SkQ1 antioxidant properties by confocal fluorescence semi-quantification of mitochondrial superoxide (J(m)) and cytosolic H(2)O(2) (J(c)) release rates in HepG2 cells. Only in glycolytic cells, SkQ1 prevented the rotenone-induced enhancement of J(m) and J(c) …
We elucidated SkQ1 antioxidant properties by confocal fluorescence semi-quantification of mitochondrial superoxide (J(m)) and cytosolic H …
Mitochondrial Superoxide Production Decreases on Glucose-Stimulated Insulin Secretion in Pancreatic β Cells Due to Decreasing Mitochondrial Matrix NADH/NAD+ Ratio.
Plecitá-Hlavatá L, Engstová H, Holendová B, Tauber J, Špaček T, Petrásková L, Křen V, Špačková J, Gotvaldová K, Ježek J, Dlasková A, Smolková K, Ježek P. Plecitá-Hlavatá L, et al. Among authors: engstova h. Antioxid Redox Signal. 2020 Oct 20;33(12):789-815. doi: 10.1089/ars.2019.7800. Epub 2020 Jul 7. Antioxid Redox Signal. 2020. PMID: 32517485 Free PMC article.
Results: Unexpectedly, INS-1E cells at transitions from 3 (11 mM; pancreatic islets from 5 mM) to 25 mM glucose decreased matrix superoxide release rates (MitoSOX Red monitoring validated by MitoB) and H(2)O(2) (mitoHyPer, subtracting mitoSypHer emission). Novel double-cha …
Results: Unexpectedly, INS-1E cells at transitions from 3 (11 mM; pancreatic islets from 5 mM) to 25 mM glucose decreased matrix superoxide …
Natural and azido fatty acids inhibit phosphate transport and activate fatty acid anion uniport mediated by the mitochondrial phosphate carrier.
Engstová H, Zácková M, Růzicka M, Meinhardt A, Hanus J, Krämer R, Jezek P. Engstová H, et al. J Biol Chem. 2001 Feb 16;276(7):4683-91. doi: 10.1074/jbc.M009409200. Epub 2000 Nov 20. J Biol Chem. 2001. PMID: 11085992 Free article.
However, methylenediphosphonate and iminodi(methylenephosphonate) inhibited both electroneutral P(i) uptake and FA cycling via PIC. AzDA analog 16-(4-azido-2-nitrophenylamino)-[(3)H(4)]-hexadecanoic acid ((3)H-AzHA) bound upon photoactivation to several mitochondria …
However, methylenediphosphonate and iminodi(methylenephosphonate) inhibited both electroneutral P(i) uptake and FA cycling via PIC. AzDA ana …
Hypoxic HepG2 cell adaptation decreases ATP synthase dimers and ATP production in inflated cristae by mitofilin down-regulation concomitant to MICOS clustering.
Plecitá-Hlavatá L, Engstová H, Alán L, Špaček T, Dlasková A, Smolková K, Špačková J, Tauber J, Strádalová V, Malínský J, Lessard M, Bewersdorf J, Ježek P. Plecitá-Hlavatá L, et al. Among authors: engstova h. FASEB J. 2016 May;30(5):1941-57. doi: 10.1096/fj.201500176. Epub 2016 Feb 17. FASEB J. 2016. PMID: 26887443
Metabolism is altered during hypoxia, and we therefore studied cristae morphology in HepG2 cells adapted to 5% oxygen for 72 h. Three dimensional (3D), super-resolution biplane fluorescence photoactivation localization microscopy with Eos-conjugated, ICS-located lactamase- …
Metabolism is altered during hypoxia, and we therefore studied cristae morphology in HepG2 cells adapted to 5% oxygen for 72 h. Three …