[Association between feeding behavior, and genetic polymorphism of leptin and its receptor in obese Chilean children].
BACKGROUND
Leptin (LEP) is mainly produced in adipose tissue and acts in the hypothalamus to regulate energy intake. Mutations in the LEP gene or its receptor (LEPR) that produce monogenic obesity are infrequent. However, LEP and LEPR polymorphisms have been associated with obesity multifactorial, due to the association found with body weight and eating behavior.


OBJECTIVE
Measure the association between LEP and LEPR polymorphisms with childhood obesity and eating behavior.


METHODS
221 Chilean obese children (BMI above the 95th percentile) were recruited. Parents of 134 of these children were also recruited to determine the association between LEP and LEPR polymorphisms with obesity in a case study-parent trio. Eating behavior was measured through the questionnaire of three factors progenitors' version (TFEQ-P19) and eating behavior in children (CEBQ).


RESULTS
No significant difference between the studied polymorphisms and childhood obesity, after correction for multiple comparisons, was observed. The dimensions; "Slow eating", "emotional eating", "enjoyment of food" and "uncontrolling eating" were significant associated with certain polymorphisms of LEP and LEPR.


CONCLUSIONS
There would be an association between polymorphisms of the LEP and LEPR genes with eating behavior in Chilean obese children.
Dirección de Investigación y Relaciones Internacionales. Universidad Bernardo O'Higgins, Santiago, Chile. Departamento de Nutrición, Diabetes y Metabolismo. Facultad de Medicina. Pontificia Universidad Católica de Chile. Santiago, Chile.. mvalladaresvega@gmail.com.
Macarena
M
Valladares
Departamento de Nutrición, Diabetes y Metabolismo. Facultad de Medicina. Pontificia Universidad Católica de Chile. Santiago, Chile. Carrera de Nutrición y Dietética. Universidad San Sebastián. Concepción Chile.. aniobregon@gmail.com.
Ana María
AM
Obregón
Instituto de Nutrición y Tecnología de los Alimentos (INTA). Universidad de Chile. Santiago, Chile.. gweiss@inta.uchile.cl.
Gerardo
G
Weisstaub
Carrera de Nutrición y Dietética. Universidad San Sebastián. Concepción Chile.. rburrows@inta.uchile.cl.
Raquel
R
Burrows
Departamento de Pediatría. Universidad de Navarra. Pamplona. España.. mvalladaresvega@gmail.com.
Ana
A
Patiño
Departamento de Nutrición, Diabetes y Metabolismo. Facultad de Medicina. Pontificia Universidad Católica de Chile. Santiago, Chile.. mvalladaresvega@gmail.com.
Judith
J
Ho-Urriola
Departamento de Nutrición, Diabetes y Metabolismo. Facultad de Medicina. Pontificia Universidad Católica de Chile. Santiago, Chile.. jsantos@med.puc.cl.
José Luis
JL
Santos
D000328:Adult; D000886:Anthropometry; D015992:Body Mass Index; D002648:Child; D002677:Chile / Q000453:epidemiology; D004644:Emotions; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D007175:Impulsive Behavior; D020738:Leptin / Q000235:genetics*; D008297:Male; D009765:Obesity / Q000453:epidemiology / Q000235:genetics* / Q000523:psychology*; D010290:Parents / Q000523:psychology; D011110:Polymorphism, Genetic; D054411:Receptors, Leptin / Q000235:genetics*; D011795:Surveys and Questionnaires
C515448:LEPR protein, human; D020738:Leptin; D054411:Receptors, Leptin