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Updated: Apr 27, 2026

Evaluation of Hepatic Glucose Production in a Polycystic Ovary Syndrome Mouse Model
Published on: March 5, 2022
Lower cocaine- and amphetamine-regulated transcript levels pose a risk for developing PCOS
1Department of Obstetrics and Gynecology, Merkezefendi State Hospital, Merkezefendi, Manisa, Turkey.
Unlabelled:
Cocaine- and amphetamine-regulated transcript (CART) is an anorectic neuropeptide abundantly expressed in the central, peripheral, and enteric nervous systems, as well as in several different endocrine cell types. Besides regulating food intake and endocrine function, it is also proposed to modulate ovarian function during follicular waves in cattle and has potent inhibitory effects on follicular development. Polycystic ovary syndrome (PCOS), presenting itself with multiple follicular ovarian cysts, is the most common endocrinological disorder among women of reproductive age. Here we aimed to investigate the association of this peptide with PCOS. Our research was designed as a case-control study, in which a total of 148 subjects (73 with PCOS and 75 age- and BMI-matched CONTROLS) were consecutively recruited. Fasting blood glucose (FBG), insulin, high-sensitivity C-reactive protein, lipids, follicle stimulating hormone, luteinizing hormone, estradiol, CART, and free testosterone levels were measured in all participants. Homeostasis model assessment of insulin resistance (HOMA-IR) and body mass index (BMI) were calculated. CART levels were found to be significantly lower in patients with PCOS (PCOS: 90.77 ± 5.98 pg/ml,
Controls:
93.24 ± 8.17 pg/ml, p=0.038). Pearson's correlation analysis showed that CART was significantly and negatively correlated with BMI and waist circumference in both (PCOS and control) groups. In CONTROLS only, CART was positively correlated with insulin and HOMA-IR, and negatively correlated with FBG. Logistic regression analysis results are suggestive of a possible protective effect of CART against PCOS (OR: 0.94, 95% CI=0.888-0.997, p=0.038).
Insights
Cocaine- and amphetamine-regulated transcript (CART) levels are lower in women with polycystic ovary syndrome (PCOS). Lower CART may offer protection against PCOS development.
Area of Science:
- Endocrinology
- Neuroendocrinology
- Reproductive Biology
Background:
- Cocaine- and amphetamine-regulated transcript (CART) is an anorectic neuropeptide involved in food intake, endocrine function, and ovarian modulation.
- Polycystic ovary syndrome (PCOS) is a common endocrinological disorder affecting women of reproductive age, characterized by multiple ovarian cysts.
Purpose of the Study:
- To investigate the association between CART peptide levels and PCOS.
- To explore the relationship between CART, metabolic parameters, and hormonal profiles in women with and without PCOS.
Main Methods:
- A case-control study involving 148 participants (73 with PCOS, 75 controls).
- Measurement of fasting blood glucose, insulin, lipids, hs-CRP, reproductive hormones, free testosterone, and CART levels.
- Calculation of HOMA-IR and BMI; correlation and logistic regression analyses were performed.
Main Results:
- CART levels were significantly lower in women with PCOS compared to controls (90.77 ± 5.98 pg/ml vs. 93.24 ± 8.17 pg/ml, p=0.038).
- CART showed negative correlations with BMI and waist circumference in both groups.
- In controls, CART positively correlated with insulin and HOMA-IR, and negatively with FBG.
- Logistic regression suggested a potential protective effect of CART against PCOS (OR: 0.94, 95% CI=0.888-0.997, p=0.038).
Conclusions:
- CART peptide levels are reduced in women with PCOS.
- CART may play a role in the pathophysiology of PCOS and potentially exert a protective effect.
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