Isotretinoin does not induce insulin resistance in patients with acne.
BACKGROUND
Isotretinoin treatment causes hypertriglyceridaemia. Insulin resistance is also associated with hypertriglyceridaemia. It is not known if isotretinoin is related to insulin resistance.


OBJECTIVE
To test this hypothesis, we measured insulin resistance in 48 patients with acne vulgaris (AV) before and after 3 months of isotretinoin treatment.


METHODS
In total, 48 patients with AV who attended the dermatology outpatient clinic at Kecioren Research and Training Hospital were included. Screening for biochemical parameters was performed just before the start of treatment (pretreatment) and after 4 months of isotretinoin therapy (post-treatment). The parameters measured were insulin, C peptide, fasting blood glucose, aspartate and alanine aminotransferases (AST, ALT), total cholesterol (TC), triglyceride, high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein (LDL-C) and very low-density lipoprotein cholesterol. Insulin resistance was measured using the Homeostasis Model Assessment of Insulin Resistance (HOMA-IR) method.


RESULTS
Compared with initial values, AST, ALT, TC, LDL-C and triglyceride levels were significantly increased (P < 0.01, < 0.05, < 0.01, < 0.05 and < 0.01, respectively), but there was no significant change in fasting blood glucose, insulin, C-peptide levels or HOMA-IR.


CONCLUSIONS
Three months of isotretinoin treatment did not change insulin sensitivity in patients with AV. Further studies with insulin resistance models may even reveal an improvement in insulin resistance, as experimental animal studies have previously shown.
Ertugrul
D T
DT
Department of Internal Medicine, Division of Endocrinology, Ankara Kecioren Research and Training Hospital, Ankara, Turkey. dertaner@gmail.com
Karadag
A S
AS
Tutal
E
E
Akin
K O
KO
D000152:Acne Vulgaris / Q000097:blood / Q000188:drug therapy* / Q000503:physiopathology; D000293:Adolescent; D000328:Adult; D000410:Alanine Transaminase / Q000097:blood; D001219:Aspartate Aminotransferases / Q000097:blood; D001786:Blood Glucose / Q000378:metabolism; D003879:Dermatologic Agents / Q000009:adverse effects*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007328:Insulin / Q000097:blood; D007333:Insulin Resistance; D015474:Isotretinoin / Q000009:adverse effects*; D008055:Lipids / Q000097:blood; D008297:Male; D055815:Young Adult
D001786:Blood Glucose; D003879:Dermatologic Agents; D007328:Insulin; D008055:Lipids; D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase; D015474:Isotretinoin