Abstract
Polycystic ovary syndrome (PCOS) is a complex endocrine disorder and one of the most common causes of anovulatory infertility. In addition, insulin resistance is commonly associated with PCOS and contributed to pathophysiology connected to dietary minerals including chromium (Cr), copper (Cu), iron (Fe), and zinc (Zn). The aims of this study were to explore whether PCOS in mice alters levels of these elements and determine if Cr supplementation resolves changes. Twenty-four female BALB/c mice were divided into three groups of eight mice [normal control (NC), PCOS + placebo milk (PP), and PCOS + Cr-containing milk (PCr)]. Each group received a high-fat diet for 4 weeks. Our results show significantly higher levels of dehydroepiandrosterone (DHEA) (p < 0.001), fasting glucose (p < 0.05), and fasting insulin (p < 0.05) in the PP group compared with both NC and PCr group. However, Cr levels were significantly lower in muscle, bone, and serum in the PP group (p < 0.05) compared with NC and PCr groups. In liver, bone, and serum, Fe levels were significantly higher in the PP group compared with the NC group (p < 0.05). In addition, we found significant correlations between Cu/Zn ratio and fasting insulin in all mice (r = 0.61; p = 0.002). Given that significant research shows that Cr supplementation improves fasting glucose, fasting insulin, and metal metabolism disorders for PCOS mice, our data suggest that trace element levels can serve as biomarkers to prescribe therapeutic supplementation to maintain a healthy metabolic balance and treat disease conditions.
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Abbreviations
- PCOS:
-
Polycystic ovary syndrome
- Cr:
-
Chromium
- Cu:
-
Copper
- Fe:
-
Iron
- Zn:
-
Zinc
- NC:
-
Normal control
- PP:
-
PCOS + placebo milk
- PCr:
-
PCOS + Cr-containing milk
- DHEA:
-
Dehydroepiandrosterone
- HFD:
-
High-fat diet
- DIO:
-
Diet-induced obese
- SC:
-
Subcutaneous
- IFG:
-
Impaired fasting glucose
- IGT:
-
Impaired glucose tolerance
- Cu-Zn SOD:
-
Cu-Zn superoxide dismutase
- MCO:
-
Multi-copper oxidase
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Acknowledgment
This work was supported by the Ministry of Education (Taiwan) under the Aim for the Top University (ATU) plan.
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The authors declare that they have no competing interests.
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Chen, TS., Chen, YT., Liu, CH. et al. Effect of Chromium Supplementation on Element Distribution in a Mouse Model of Polycystic Ovary Syndrome. Biol Trace Elem Res 168, 472–480 (2015). https://doi.org/10.1007/s12011-015-0384-6
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DOI: https://doi.org/10.1007/s12011-015-0384-6