Uncoupling Proteins
UNCOUPLING PROTEINY
Uncoupling proteiny jsou mitochondriální bílkoviny odpřahující tvorbu ATP od dýchacího řetězce. Dosud jich bylo objeveno několik, nejvíce prozkoumán je UCP1. Je exprimován v hnědé tukové tkáni a jeho funkcí je tvorba tepla. Termogenní funkce této tkáně je známa již delší dobu, u člověka však hnědý tuk obvykle zaniká již v dětství. V dospělosti v lidském organizmu najdeme UCP2 a UCP3. Předpokládá se, že tyto bílkoviny ovlivňují metabolizmus lipidů a energetický výdej, proto se zkoumá jejich možné využití v terapii obezity. Přesná fyziologická funkce v organizmu však dosud nebyla vysvětlena.
Klíčová slova:
uncoupling proteiny, termogeneze, oxidativní fosforylace, obezita.
Authors:
R. Mikulová; V. Hainer
Authors place of work:
Centrum pro diagnostiku a léčbu obezity III. interní kliniky 1. LF UK a VFN, Praha Fyziologický ústav AV ČR, Praha
Published in the journal:
Čas. Lék. čes. 2001; : 387-391
Category:
Summary
Uncoupling proteins are located in the inner mitochondria membrane. Their name is derived from their function: they uncouple oxidative processes of the respiratory chain from ATP synthesis. Hitherto several members of the family have been described, the best known being UCP1. UCP1 can be expressed exclusively in brown adipose tissue and it is responsible for the heat production. In humans the brown fat disappears during the early childhood. In adults another members of the UCP family can be found - UCP2 and UCP3. It is widely accepted that these proteins affect lipid metabolism and energy expenditure. They are intensively studied owing to their possible use in the therapy of obesity. However, their physiological function has not been yet fully established.
Key words:
uncoupling proteins, thermogenesis, oxidative phosphorylation, obesity.
Štítky
Addictology Allergology and clinical immunology Angiology Audiology Clinical biochemistry Dermatology & STDs Paediatric gastroenterology Paediatric surgery Paediatric cardiology Paediatric neurology Paediatric ENT Paediatric psychiatry Paediatric rheumatology Diabetology Pharmacy Vascular surgery Pain management Dental HygienistČlánok vyšiel v časopise
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