Adipokines in Obese Adolescents With Insulin Resistance

NCT ID: NCT01410604

Last Updated: 2012-04-27

Study Results

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

31 participants

Study Classification

INTERVENTIONAL

Study Start Date

2007-01-31

Study Completion Date

2010-03-31

Brief Summary

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The purpose of this study is to compare serum concentrations of inflammatory cytokines, interleukin 6 (IL-6), High-sensitivity C-reactive protein (hs-CRP), adiponectin, and tumour necrosis factor alpha (TNFα), before and after three months treatment with metformin in obese adolescents with insulin resistance (IR).

Detailed Description

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The increased prevalence of obesity in pediatric patients is a public health problem particularly because of the difficulties involved with changing lifestyles. Current studies of obese children and adolescents show increased insulin resistance (IR) and chronic inflammatory states. These conditions increase the risk of disability and/or premature death.

The current treatment schemes for obese children are conservative and are focused on changing their lifestyles (exercise and dietary plans). However, metabolic conditions, such as IR, dyslipidemia, and inflammatory processes, are perpetuated.

Metformin is a biguanide that is used for adolescents with diabetes mellitus and polycystic ovarian syndrome. Several clinical trials with metformin for obese pediatric patients have observed decreases in IR, decreases in weight, and improvements in lipid metabolism.

Adipose tissue is not only an energy repository, but also plays an immunological role by the secretion of cytokines. Both overweight adults and adolescents show decreases in adiponectin levels and increases in tumor necrosis factor alpha (TNFα) and interleukin 6 (IL-6). IL-6 can stimulate the production of high-sensitivity C-reactive protein (hs-CRP), which is considered to be a risk marker for the development of cardiovascular disease.

Conditions

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Obesity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Metformin

Tablet of 500 mg metformin, oral every 12 hours (total metformin dose of 1 g/day) for 3 months.

Group Type EXPERIMENTAL

Metformin

Intervention Type DRUG

Tablet of 500 mg metformin, oral every 12 hours (total metformin dose of 1 g/day) for 3 months.

Placebo

Tablet of 500 mg oral placebo every 12 hours for 3 months.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Tablet of 500 mg oral placebo every 12 hours for 3 months.

Interventions

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Metformin

Tablet of 500 mg metformin, oral every 12 hours (total metformin dose of 1 g/day) for 3 months.

Intervention Type DRUG

Placebo

Tablet of 500 mg oral placebo every 12 hours for 3 months.

Intervention Type DRUG

Other Intervention Names

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Dabex

Eligibility Criteria

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Inclusion Criteria

* Obesity defined as Body Mass Index (BMI) ≥ percentile 95
* Tanner stage ≥ 2
* Insulin resistance defined as Basal insulin \> 15 µU/mL or Homeostasis Model Assessment index (HOMA) \> 4.5
* Patients' parents signed written consents when they and their adolescent children agreed to enroll

Exclusion Criteria

* Glucose intolerance
* Diabetes mellitus (type 1 or 2)
* Anemia (Hb \< 10 g/dL)
* Plasma creatinine \> 1.4 mg/dL
* Abnormal hepatic function
* Any associated Disease (Pulmonary, Infection, Autoimmune Disease)
* History of lactic acidosis
Minimum Eligible Age

9 Years

Maximum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Hospital Infantil de Mexico Federico Gomez

OTHER

Sponsor Role collaborator

Hospital Regional de Alta Especialidad del Bajio

OTHER

Sponsor Role lead

Responsible Party

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Maria Lola Evia-Viscarra

Pediatrics Endocrinology

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Maria L Evia-Viscarra, M.D.

Role: PRINCIPAL_INVESTIGATOR

Hospital Regional de Alta Especialidad del Bajio

Edel R Rodea-Montero, Statistician

Role: STUDY_CHAIR

Hospital Regional de Alta Especialidad del Bajio

Evelia Apolinar-Jiménez, Nutrition

Role: STUDY_CHAIR

Hospital Regional de Alta Especialidad del Bajio

Leticia M García-Morales, M.D.

Role: STUDY_CHAIR

Hospital Infantil de Mexico Federico Gomez

Constanza Leaños-Pérez, M.D.

Role: STUDY_CHAIR

Hospital Infantil de Mexico Federico Gomez

Mireya Figueroa-Barrón, Chemestry

Role: STUDY_CHAIR

Hospital Infantil de Mexico Federico Gomez

Dolores Sánchez-Fierros, Chemestry

Role: STUDY_CHAIR

Hospital Infantil de Mexico Federico Gomez

Nathalie Muñoz-Noriega, Nutrition

Role: STUDY_CHAIR

Hospital Regional de Alta Especialidad del Bajio

Juan G Reyes-García, M.D.

Role: STUDY_CHAIR

Escuela Superior de Medicina del IPN

Locations

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Hospital Regional de Alta Especialidad del Bajío

León, Guanajuato, Mexico

Site Status

Hospital Infantil de México Federico Gómez

Mexico City, Mexico City, Mexico

Site Status

Countries

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Mexico

References

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Other Identifiers

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010-08

Identifier Type: -

Identifier Source: org_study_id

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