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001-es BibID:	BIBFORM071279
Első szerző:	Mádi András (biológus)
Cím:	Browning deficiency and low mobilization of fatty acids in gonadal white adipose tissue leads to decreased cold-tolerance of transglutaminase 2 knock-out mice / András Mádi, Ixchelt Cuaranta-Monroy, Kinga Lénárt, Attila Pap, Zoltán András Mezei, Endre Kristóf, Anna Oláh, György Vámosi, Zsolt Bacsó, Péter Bai, László Fésüs
Dátum:	2017
ISSN:	1388-1981
Megjegyzések:	During cold-exposure ♭beige' adipocytes with increased mitochondrial content are activated in white adipose tissue (WAT). These cells, similarly to brown adipose tissue (BAT), dissipate stored chemical energy in the form of heat with the help of uncoupling protein 1 (UCP1). We investigated the effect of tissue transglutaminase (TG2)ablation on the function of ATs in mice. Although TG2+/+ and TG2?/? mice had the same amount of WAT and BAT, we found that TG2+/+ animals could tolerate acute cold exposure for 4 h, whereas TG2?/? mice only for 3 h. Both TG2?/? and TG2+/+ animals used up half of the triacylglycerol content of subcutaneous WAT (SCAT)after 3 h treatment; however, TG2?/? mice still possessed markedly whiter and higher amount of gonadal WAT (GONAT) as reflected in the larger size of adipocytes and lower free fatty acid levels in serum. Furthermore, lower expression of ♭beige' marker genes such as UCP1, TBX1 and TNFRFS9 was observed after cold exposure inGONAT of TG2?/? mice, paralleled with a lower level of UCP1 protein and a decreased mitochondrial content.The detected changes in gene expression of Resistin and Adiponectin did not provoke glucose intolerance in the investigated TG2?/? mice, and TG2 deletion did not influence adrenaline, noradrenaline, glucagon and insulin production. Our data suggest that TG2 has a tissue-specific role in GONAT function and browning, which becomesapparent under acute cold exposure.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban Browning Uncoupling protein-1 Beige adipocytes Differentiation Cold exposure TG2
Megjelenés:	Biochimica et Biophysica Acta (BBA). Molecular and Cell Biology of Lipids. - 1862 : 12 (2017), p. 1575-1586. -
További szerzők:	Cuaranta-Monroy, Ixchelt (1979-) (Ph.D. hallgató) Lénárt Kinga (1994-) (biológus) Pap Attila (1980-) (biológus) Mezei Zoltán András (1980-) (orvos) Kristóf Endre (1987-) (általános orvos) Oláh Anna (1956-) (klinikai biokémikus, vegyész) Vámosi György (1967-) (biofizikus) Bacsó Zsolt (1963-) (biofizikus) Bai Péter (1976-) (biokémikus) Fésüs László (1947-) (orvos biokémikus)
Pályázati támogatás:	GINOP-2.3.2-15-2016-00006 GINOP K105046 OTKA K108308 OTKA K103965 OTKA
Internet cím:	DOI Intézményi repozitóriumban (DEA) tárolt változat
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