TY - JOUR
T1 - Omental fat expression of adiponectin and adiponectin receptors in non-obese women with PCOS
T2 - A preliminary study
AU - Seow, Kok Min
AU - Tsai, Yieh Loong
AU - Juan, Chi Chang
AU - Lin, Yu Hung
AU - Hwang, Jiann Loung
AU - Ho, Low Tone
PY - 2009/10
Y1 - 2009/10
N2 - Adiponectin is regarded as a possible link between adiposity and insulin resistance. The aim of the study was to determine adipose levels of mRNA for adiponectin and adiponectin receptors (AdipoR) in non-obese women with polycystic ovary syndrome (PCOS), and to assess whether the cytokine and receptors are related to insulin resistance in PCOS. Adipose tissue obtained from eight non-obese women with PCOS [body mass index (BMI) 2 as cut-off point] was analysed. Levels of mRNA for adiponectin, AdipoR1 and 2 were quantified using the semi-quantitative reverse transcriptase-polymerase chain reaction. Eight non-obese, age-and BMI-matched healthy women served as controls. The level of adiponectin mRNA in non-obese women with PCOS were lower than in controls, but the difference was not statistically significant. However, AdipoR1 and 2 mRNA levels in non-obese women with PCOS were significantly lower than in controls. There was a significant negative correlation between 2 h insulin levels and AdipoR1 or AdipoR2 mRNA levels in non-obese women with PCOS (r = 0.45 and 0.52 respectively, P <0.05). The present study demonstrates that adiponectin receptor expression is down-regulated by hyperinsulinaemia in non-obese women with PCOS, resulting in adiponectin resistance.
AB - Adiponectin is regarded as a possible link between adiposity and insulin resistance. The aim of the study was to determine adipose levels of mRNA for adiponectin and adiponectin receptors (AdipoR) in non-obese women with polycystic ovary syndrome (PCOS), and to assess whether the cytokine and receptors are related to insulin resistance in PCOS. Adipose tissue obtained from eight non-obese women with PCOS [body mass index (BMI) 2 as cut-off point] was analysed. Levels of mRNA for adiponectin, AdipoR1 and 2 were quantified using the semi-quantitative reverse transcriptase-polymerase chain reaction. Eight non-obese, age-and BMI-matched healthy women served as controls. The level of adiponectin mRNA in non-obese women with PCOS were lower than in controls, but the difference was not statistically significant. However, AdipoR1 and 2 mRNA levels in non-obese women with PCOS were significantly lower than in controls. There was a significant negative correlation between 2 h insulin levels and AdipoR1 or AdipoR2 mRNA levels in non-obese women with PCOS (r = 0.45 and 0.52 respectively, P <0.05). The present study demonstrates that adiponectin receptor expression is down-regulated by hyperinsulinaemia in non-obese women with PCOS, resulting in adiponectin resistance.
KW - Adiponectin
KW - Adiponectin receptor 1 and 2
KW - Polycystic ovary syndrome
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U2 - 10.1016/j.rbmo.2009.05.003
DO - 10.1016/j.rbmo.2009.05.003
M3 - Article
C2 - 19909601
AN - SCOPUS:70449089022
SN - 1472-6483
VL - 19
SP - 577
EP - 582
JO - Reproductive BioMedicine Online
JF - Reproductive BioMedicine Online
IS - 4
ER -