Abstract
Background
Insulin resistance is a common feature among women with polycystic ovary syndrome (PCOS), especially in those patients with hyperandrogenism and chronic anovulation. PCOS women are at risk for developing metabolic syndrome, impaired glucose tolerance and type II diabetes mellitus (DM II).
Objective
The aim of this review is to explore the existing knowledge of the interplay between androgen excess, pancreatic β-cell function, non-alcoholic fatty liver disease (NAFLD), intra-abdominal and subcutaneous (SC) abdominal adipocytes in PCOS, providing a better comprehension of the molecular mechanisms of diabetologic interest.
Methods
A comprehensive MEDLINE® search was performed using relevant key terms for PCOS and DM II.
Results
Insulin-induced hyperandrogenism could impair pancreatic β-cell function, the SC abdominal adipocytes’ lipid storage capacity, leading to intra-abdominal adipocyte hypertrophy and lipotoxicity, which in turn promotes insulin resistance, and could enhance NAFLD. Fetal hyperandrogenism exposure prompts to metabolic disorders. Treatment with flutamide showed to partially reverse insulin resistance.
Conclusions
Metabolic impairment seems not to be dependent only on the total fat mass content and body weight in women with PCOS and might be ascribed to the androgen excess.
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Abbreviations
- A:
-
Androstenedione
- AACE:
-
American Association of Clinical Endocrinology
- ACE:
-
American College of Endocrinology
- BMI:
-
Body mass index
- DHEAS:
-
Dehydroepiandrosterone sulfate
- DHT:
-
Di-hydro-testosterone
- DM II:
-
Type II diabetes mellitus
- DNMT3:
-
De novo methyl-transferase 3
- FFA:
-
Free fatty acids
- FPIR:
-
First phase insulin response
- IGT:
-
Impaired glucose tolerance
- LDL-R:
-
LDL receptor
- MetS:
-
Metabolic syndrome
- NAFLD:
-
Non-alcoholic fatty liver disease
- NASH:
-
Non-alcoholic steatoepatitis
- NIH:
-
National Institutes of Health
- 17αOH-P:
-
17α-Hydroxy-progesterone
- OGTT:
-
Oral glucose tolerance test
- PCOS:
-
Polycystic ovary syndrome
- SC:
-
Subcutaneous
- SHBG:
-
Sex hormone-binding globulin
- SSPG:
-
Steady-state plasma glucose
- T:
-
Testosterone
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Condorelli, R.A., Calogero, A.E., Di Mauro, M. et al. Androgen excess and metabolic disorders in women with PCOS: beyond the body mass index. J Endocrinol Invest 41, 383–388 (2018). https://doi.org/10.1007/s40618-017-0762-3
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DOI: https://doi.org/10.1007/s40618-017-0762-3