Myo-inositol and Melatonin in Pre-menopausal Women

2014-07-23 21:09:21 | BioPortfolio


The purpose of this study is to determine whether myo-inositol and melatonin, or myo-inositol alone, or melatonin alone, are effective in normalizing irregular bleeding and anovulatory cycles in pre-menopausal women.


Melatonin has produced a remarkable significant improvement of thyroid function, positive changes of gonadotropins towards reduced levels, and in some women a re-acquisition of normal menstrual cycle. Furthermore, an abrogation of menopause-related depression, amelioration of hot-flashes and improvement of quality and duration of sleep has been reported.

Myo-inositol is involved in several aspects of human reproduction. Elevated concentrations of myo-inositol in human follicular fluids appear to play a positive function in follicular maturity and provide a marker of good quality oocytes. Nevertheless its positive role in PCOS women is a consequence of a defect in the insulin signalling pathway (inositol-containing phosphoglycan mediators) that seems to be primarily implicated in the pathogenesis of insulin resistance

Study Design

Allocation: Randomized, Control: Active Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment


Pre-menopausal Irregular Cycles and Bleedings


melatonin, myo-inositol, melatonin plus myo-inositol


University Hospital




University of Messina

Results (where available)

View Results


Published on BioPortfolio: 2014-07-23T21:09:21-0400

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Medical and Biotech [MESH] Definitions

A biogenic amine that is found in animals and plants. In mammals, melatonin is produced by the PINEAL GLAND. Its secretion increases in darkness and decreases during exposure to light. Melatonin is implicated in the regulation of SLEEP, mood, and REPRODUCTION. Melatonin is also an effective antioxidant.

A family of G-protein-coupled receptors that are specific for and mediate the effects of MELATONIN. Activation of melatonin receptors has been associated with decreased intracellular CYCLIC AMP and increased hydrolysis of PHOSPHOINOSITIDES.

A melatonin receptor subtype primarily found expressed in the BRAIN and RETINA.

Intracellular receptors that bind to INOSITOL 1,4,5-TRISPHOSPHATE and play an important role in its intracellular signaling. Inositol 1,4,5-trisphosphate receptors are calcium channels that release CALCIUM in response to increased levels of inositol 1,4,5-trisphosphate in the CYTOPLASM.

A melatonin receptor subtype that is primarily found in the HYPOTHALAMUS and in the KIDNEY.

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