Effects of thermoneutrality on food intake, body weight, and body composition in a Prader-Willi syndrome mouse model.
Obesity (Silver Spring)
; 31(6): 1644-1654, 2023 06.
Article
in En
| MEDLINE
| ID: mdl-37161883
ABSTRACT
OBJECTIVE:
Prader-Willi syndrome (PWS) is a multisystem genetic disorder. Unfortunately, none of several mouse models carrying PWS mutations emulates the entirety of the human PWS phenotype, including hyperphagia plus obesity.METHODS:
To determine whether housing at thermoneutrality (TN, 30 °C) permits the development of hyperphagia and obesity in the Snord116del PWS mouse model, the effects of housing three different ages of Snord116del and wild-type (WT) littermates at TN versus room temperature (RT, 22-24 °C) for 8 weeks were compared.RESULTS:
Snord116del mice born and maintained at TN exhibited lower body weight curves, lower percentage fat mass, and lower food intake than WT mice at RT. In 4- to 6-month-old high-fat diet-fed female mice, TN raised the Snord116del body weight curve closer to that of RT-housed WT mice although the TN-housed Snord116del mice did not gain more adiposity or exhibit greater food intake. In 6- to 8-month-old high-fat diet-fed male mice, body weight, adiposity, and food intake of TN-housed Snord116del mice remained far below levels in RT-housed WT mice. TN elicited hypotonia in Snord116del adults and exacerbated mortality of Snord116del newborns.CONCLUSIONS:
In none of three tested TN protocols were greater food intake, body weight, or adiposity induced in Snord116del mice compared with RT-housed WT mice.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Prader-Willi Syndrome
Limits:
Adult
/
Animals
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Female
/
Humans
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Infant
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Male
/
Newborn
Language:
En
Journal:
Obesity (Silver Spring)
Journal subject:
CIENCIAS DA NUTRICAO
/
FISIOLOGIA
/
METABOLISMO
Year:
2023
Document type:
Article
Affiliation country:
United States