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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: OBJECTIVE, METHODS, RESULTS. Meshes: Adult, Body Mass Index, Case-Control Studies, Female, Follicle Stimulating Hormone, Follicular Phase, Humans, Inhibins, Luteal Phase, Luteinizing Hormone, Polycystic Ovary Syndrome, Time Factors.
user
Are luteal-phase inhibin A and follicular-phase inhibin B levels characteristic of patients with an elevated LH-to-FSH ratio? Context: To test whether serum inhibin levels are related to differences in gonadotropin concentrations between patients with an elevated LH-to-FSH ratio (ELF patients) and controls. 32 ELF patients were matched with controls by age, body mass index (BMI), and cycle length. No statistically significant difference was found in follicular-phase inhibin B levels or midluteal inhibin A levels between cases and controls. Significant negative correlation was observed between follicular-phase inhibin B concentrations and BMI in ELF patients but not among controls. LH and FSH were positively related to inhibin B levels in ELF patients. Midluteal inhibin A correlated with sex hormone-binding globulin in controls but not in ELF patients.
assistant
Neither follicular-phase inhibin B levels nor midluteal inhibin A levels are characteristic of patients with an elevated LH-to-FSH ratio. Opposite correlations with LH and BMI suggest dysregulation of inhibin secretion rather than dimeric inhibins having a central role to the endocrinological imbalance observed in polycystic ovary syndrome. Final Decision: no