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El grado de obesidad modifica la respuesta de disminución de circunferencia de cintura en pacientes que reciben 15 mg diarios de sibutramina: estudio abierto sobre tolerancia y efectividad de la sibutramina / Patients with type III obesity given sibutramine 15 mg/day lose weight in amounts proportional to those in types I and II, but waist circumferences does not decrease proportionally
López-Alvarenga, Juan Carlos; Vargas, José Antonio; Schneider-Ehrenberg, Oliver Paul; Comuzzie, Anthony G; González, Jorge; Martínez, José Luis.
  • López-Alvarenga, Juan Carlos; Southwest Foundation for Biomedical Research. Department of Genetics. San Antonio. US
  • Vargas, José Antonio; ALTANA Pharma. México, D.F. MX
  • Schneider-Ehrenberg, Oliver Paul; ALTANA Pharma. México, D.F. MX
  • Comuzzie, Anthony G; Southwest Foundation for Biomedical Research. Department of Genetics. San Antonio. US
  • González, Jorge; ALTANA Pharma. México, D.F. MX
  • Martínez, José Luis; UNAM. FES Iztacala. México, D.F. MX
Gac. méd. Méx ; 143(2): 109-114, mar.-abr. 2007. tab, graf
Article in Spanish | LILACS | ID: lil-568794
RESUMEN
Objetivo. Los pacientes con sobrepeso y las clases de obesidad I, II, III presentan diferente etiología, comorbilidad, efectos metabólicos y diferente respuesta terapéutica. En este análisis evaluamos el efecto del grado de obesidad sobre la disminución del índice de masa corporal (IMC) y la circunferencia de cintura (CC) eficacia y tolerancia de sibutramina 15mg al día. Material y métodos. Se analizó una base de datos de una muestra de 701 sujetos colectados de 47 clínicas. Los sujetos recibieron tratamiento con 15 mg de sibutramina al día. Se registró el peso, estatura y la CC en las visitas basal, 4 y 8 semanas. Resultados. Los pacientes con diferentes grados de obesidad disminuyeron proporcionalmente el IMC (p = 0.86), pero los sujetos con obesidad clase III mostraron menor disminución de la CC (p = 0.003) que los otros grupos. Los eventos adversos fueron pocos, y de menor frecuencia con grados mayores de obesidad. Discusión. La disociación de disminución de IMC y la CC puede estar relacionada al control ejercido por el sistema simpático de acuerdo con el grado de obesidad, además de la biodistribución de sibutramina. Los sujetos con IMC mayor de 40 necesitan mayor dosis para alcanzar proporcionalmente la pérdida de grasa abdominal de los otros grupos de obesos.
ABSTRACT

OBJECTIVE:

The etiology, comorbidity, metabolism, and treatment response vary among overweight and obesity types I, II and III individuals. We assessed the association between obesity type with body mass index, waist circumference and tolerance to a daily dose of 15 mg of sibutramine. MATERIALS AND

METHODS:

A sample of 701 individuals recruited from 47 health centers was analyzed. All subjects received 15 mg of sibutramine daily for 8 weeks. Weight, height, and waist circumference were measured at day 0 and weeks 4 and 8.

RESULTS:

Patients in all obesity types lost proportional amounts of weight (p=0.86), but those in type IIl obesity had a smaller reduction in waist circumference than those in types I and 1 (p=0.003). Side effects of sibutramine were rarely observed. Subjects with type III obesity exhibited even fewer side effects.

CONCLUSIONS:

The lack of association between weight reduction and decreased waist circumference across obesity types could be related to differences in the sympathetic nervous system or to sibutramine biodistribution. Subjects with body mass index greater than 40 Kg/ m(2) required a higher dose of sibutramine in order to loose the same proportion of abdominal fat as those in other types of obesity.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Appetite Depressants / Weight Loss / Cyclobutanes / Abdominal Fat / Obesity Type of study: Observational study / Risk factors Limits: Adult / Female / Humans / Male Language: Spanish Journal: Gac. méd. Méx Journal subject: Medicine Year: 2007 Type: Article Affiliation country: Mexico / United States Institution/Affiliation country: ALTANA Pharma/MX / Southwest Foundation for Biomedical Research/US / UNAM/MX

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Full text: Available Index: LILACS (Americas) Main subject: Appetite Depressants / Weight Loss / Cyclobutanes / Abdominal Fat / Obesity Type of study: Observational study / Risk factors Limits: Adult / Female / Humans / Male Language: Spanish Journal: Gac. méd. Méx Journal subject: Medicine Year: 2007 Type: Article Affiliation country: Mexico / United States Institution/Affiliation country: ALTANA Pharma/MX / Southwest Foundation for Biomedical Research/US / UNAM/MX