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J Eur Acad Dermatol Venereol. 2011 Aug;25(8):950-4. doi: 10.1111/j.1468-3083.2010.03896.x. Epub 2010 Nov 4.

Effect of insulin-like growth factor-1 deficiency or administration on the occurrence of acne.

Author information

1
Unit of Pediatric Dermatology, Schneider Children's Medical Center of Israel, Petach Tikva, Israel. benamitai.dan@gmail.com

Abstract

BACKGROUND:

The role of growth hormone, insulin, and insulin-like growth factor-1 (IGF-1) in the development of acne is incompletely understood.

OBJECTIVE:

To study the effect of the absence of IGF-1 and its pharmacologic replacement on the occurrence of acne vulgaris.

PATIENTS AND METHODS:

Laron syndrome (LS) is characterized by congenital IGF-1 deficiency. The study group consisted of 21 patients with classical LS, who underwent puberty: 13 (8 male, 5 female) untreated and under regular follow-up until age 20?48 years; and 8 (2 male, 6 female) treated with IGF-1 (70-200 μg/kg/day), including 6 adults (2 male, treated at age 14.5-29 years and 4 female, treated at age 30-37 years) and 2 adolescents (2 female, treated at age 3.5-16 years). The medical files were reviewed for occurrence of acne and the corresponding sex hormone levels, and the findings were compared between the treated and untreated patients.

RESULTS:

Puberty was delayed in all untreated patients. Only one patient had slight acne at age 22 years, when he reached full puberty. Among the 2 IGF-1 treated male patients, none acquired acne. Among the 6 treated female patients, 3 had signs of hyperandrogenism (oligo-amenorrhea) and acne during IGF-1 over-dosage. On reduction of the IGF-1 dose (to 50 μg/kg/day) or cessation of treatment, the acne disappeared in all 3 patients.

CONCLUSION:

This study demonstrates for the first time that serum IGF-1 deficiency prevents the occurrence of acne. The findings suggest that an interaction between IGF-1 and androgens is necessary for the development of acne.

[Indexed for MEDLINE]

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