Format

Send to

Choose Destination
Pediatr Obes. 2018 Jan;13(1):30-37. doi: 10.1111/ijpo.12184. Epub 2016 Sep 21.

A pilot study of the effects of niacin administration on free fatty acid and growth hormone concentrations in children with obesity.

Author information

1
Section on Growth and Obesity, Program in Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), Bethesda, USA.
2
Division of Endocrinology, Boston Children's Hospital, Boston, USA.

Abstract

CONTEXT:

Children with obesity have low spontaneous growth hormone (GH) secretion. High circulating free fatty acid (FFA) concentration is believed to inhibit GH secretion in those with obesity. In adults, lipolytic inhibition with niacin lowers FFA and increases GH, but there are no prior studies in children with obesity.

OBJECTIVE:

The objective of the study was to determine the dose and frequency of niacin administration required to lower FFA and stimulate GH in children with obesity.

DESIGN:

Dose-finding study of nondiabetic children ages 6-12 years with body mass index (BMI) ≥ 95th percentile given niacin 250 mg q2h × 3 doses (n = 2), 500 mg q2h × 3 doses (n = 5) or 500 mg q1h × 4 doses (n = 5).

PARTICIPANTS:

Eight boys and four girls (age 9.7 ± 1.8 years; BMI 26.4 ± 3.1 kg m-2 ; BMIz 2.2 ± .25) were studied.

MAIN OUTCOME:

Percentage of serum FFA values that were below 0.2 mEq L-1 . GH, insulin and glucose were also measured serially.

RESULTS:

FFA decreased as the dose and frequency of niacin increased (p = .01). Niacin 500 mg q1h 4 doses suppressed FFA < 0.2 mEq L-1 and significantly increased GH (p = .04). Adverse effects were flushing/warmth (100%), tingling (60%) and GI complaints (20-40%).

CONCLUSIONS:

Niacin 500 mg q1h significantly lowered serum FFA and increased GH. These pilot data suggest that high FFA is an important suppressor of GH secretion in children with obesity.

TRIAL REGISTRATION:

ClinicalTrials.gov NCT01237041.

KEYWORDS:

adipose tissue; free fatty acids; growth hormone; lipolysis; obesity; somatotropin

PMID:
27654882
PMCID:
PMC5360541
DOI:
10.1111/ijpo.12184
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Wiley Icon for PubMed Central
Loading ...
Support Center