Gut Microbial Diversity in Women with Polycystic Ovary Syndrome Correlates with Hyperandrogenism.

Gut Microbial Diversity in Women with Polycystic Ovary Syndrome Correlates with Hyperandrogenism.

J Clin Endocrinol Metab. 2018 Jan 23;:

Authors: Torres PJ, Siakowska M, Banaszewska B, Pawelczyk L, Duleba AJ, Kelley ST, Thackray VG

Abstract
Context: A majority of women with polycystic ovary syndrome (PCOS) have metabolic abnormalities that result in an increased risk of developing type 2 diabetes and heart disease. Correlative studies have shown an association between changes in the gut microbiome and metabolic disorders. Two recent studies reported a decrease in alpha diversity of the gut microbiome in women with PCOS compared with healthy women.
Objective: We investigated whether changes in the gut microbiome correlated with specific clinical parameters in women with PCOS compared to healthy women. We also investigated whether there were changes in the gut microbiome in women with polycystic ovarian morphology (PCOM) that lacked the other diagnostic criteria of PCOS.
Participants: Subjects were recruited at the Poznan University of Medical Sciences. Fecal microbial diversity profiles of healthy women (n=48), women with PCOM (n=42), and women diagnosed with PCOS using the Rotterdam criteria (n=73) were analyzed using 16S rRNA gene sequencing.
Results: Lower alpha diversity was observed in women with PCOS compared with healthy women. Women with PCOM had a change in alpha diversity that was intermediate between the other two groups. Regression analyses showed that hyperandrogenism, total testosterone and hirsutism were negatively correlated with alpha diversity. PERMANOVA of UniFrac distances showed that hyperandrogenism was also correlated with beta diversity. Random Forest identified bacteria that discriminated between healthy women and women with PCOS.
Conclusions: These results suggest that hyperandrogenism may play a critical role in altering the gut microbiome in women with PCOS.

PMID: 29370410 [PubMed - as supplied by publisher]

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