D-Chiro-Inositol Treatment Affects Oocyte and Embryo Quality and Improves Glucose Intolerance in Both Aged Mice and Mouse Models of Polycystic Ovarian Syndrome.

Polycystic ovarian syndrome (PCOS) is the main cause of female infertility. It is a multifactorial disorder with varying clinical manifestations including metabolic/endocrine abnormalities, hyperandrogenism, and ovarian cysts, among other conditions. D-Chiro-inositol (DCI) is the main treatment available for PCOS in humans. To address some of the mechanisms of this complex disorder and its treatment, this study examines the effect of DCI on reproduction during the development of different PCOS-associated phenotypes in aged females and two mouse models of PCOS. Aged females (8 months old) were treated or not (control) with DCI for 2 months. PCOS models were generated by treatment with dihydrotestosterone (DHT) on Days 16, 17, and 18 of gestation, or by testosterone propionate (TP) treatment on the first day of life. At two months of age, PCOS mice were treated with DCI for 2 months and their reproductive parameters analyzed. No effects of DCI treatment were produced on body weight or ovary/body weight ratio. However, treatment reduced the number of follicles with an atretic cyst-like appearance and improved embryo development in the PCOS models, and also increased implantation rates in both aged and PCOS mice. DCI modified the expression of genes related to oocyte quality, oxidative stress, and luteal sufficiency in cumulus-oocyte complexes (COCs) obtained from the aged and PCOS models. Further, the phosphorylation of AKT, a main metabolic sensor activated by insulin in the liver, was enhanced only in the DHT group, which was the only PCOS model showing glucose intolerance and AKT dephosphorylation. The effect of DCI in the TP model seemed mediated by its influence on oxidative stress and follicle insufficiency. Our results indicate that DCI works in preclinical models of PCOS and offer insight into its mechanism of action when used to treat this infertility-associated syndrome.

Evaluación del tratamiento de los defectos óseos complejos con coralina y membrana de colágeno / Evaluation of the treatment of complex bone defects with coralina and collagen membrane

Se realizó un estudio cuasi experimental, longitudinal y prospectivo, con el objetivo de evaluar el tratamiento de los defectos óseos complejos con coralina y membrana de colágeno. El universo estuvo constituido por 18 pacientes de ambos sexos entre 25 y 54 años de edad atendidos en la Clínica "Lidia Doce Sánchez" de Guantánamo desde 2014 hasta 2017. Los pacientes se distribuyeron según grupos de edades, fueron evaluados luego del año de ser intervenidos. Se evidenció mayoritariamente el grupo de edades de 35-44 años, la ausencia de bolsas periodontales, la movilidad dentaria grado 0. La osteointegración grado III y una evaluación buena del tratamiento con coralina y membrana de colágeno en defectos óseos complejos, coincidieron en primacía(AU)

A quasi-experimental, longitudinal and prospective study was carried out, with the aim of evaluating the treatment of complex bone defects with coralina and collagen membrane. The universe consisted of 18 patients of both sexes between 25 and 54 years of age attended in the Clinic "Lidia Doce Sánchez" of Guantanamo from 2014 to 2017. The patients were distributed according to age groups, were evaluated after the being operated. The age group of 35-44 years, the absence of periodontal pockets, the grade 0 tooth mobility were evidenced. The osseo integration grade III and a good evaluation of the treatment with coralina and collagen membrane in complex bone defects coincided in primacy(AU)