Brown adipose tissue recruitment in a rodent model of severe burns.
Burns
; 46(7): 1653-1659, 2020 11.
Article
em En
| MEDLINE
| ID: mdl-32507534
ABSTRACT
BACKGROUND:
Severe burns results in a prolonged hypermetabolic response. Brown adipose tissue (BAT), abundant in uncoupling protein 1 (UCP1), plays a key role in non-shivering thermogenesis. We set out to determine if BAT is recruited in response to severe burns.METHODS:
Male balb-c mice underwent scald burns on approximately 20-25% of their total body surface. BAT was harvested from the interscapular fat pad of sham and burned mice at 3h, 24h, 4 days, and 10 days after injury. High-resolution respirometry was used to determine mitochondrial respiratory function in BAT. BAT protein concentration, and mitochondrial enzyme activity were also determined.RESULTS:
Respiration increased in BAT of burned mice, peaking at 24h after injury (after injury, P<0.001). While UCP1 independent respiration was not significantly altered by burn, UCP1 dependent respiration increased >2-fold at 24h after injury when compared to the 3h and sham group (P<0.01). Normalized to citrate synthase activity, total uncoupled (P<0.05) and UCP1 dependent (P<0.01) respiration remained elevated at 24h after injury.CONCLUSIONS:
We show a time-dependent recruitment of rodent BAT in response to severe burns. Given recent reports that humans, including patients with severe burns, have functional BAT, these data support a role for BAT in the hypermetabolic response to severe burns.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Tecido Adiposo Marrom
/
Queimaduras
/
Proteína Desacopladora 1
Limite:
Animals
Idioma:
En
Revista:
Burns
Assunto da revista:
TRAUMATOLOGIA
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Estados Unidos