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Sant'Agata li Battiati, Italy

Chamayou S.,Unita di Medicina della Riproduzione | Patrizio P.,Yale University | Storaci G.,Unita di Medicina della Riproduzione | Tomaselli V.,University of Catania | And 4 more authors.
Journal of Assisted Reproduction and Genetics | Year: 2013

Purpose: Embryo kinetics analysis is an emerging tool for selecting embryo(s) for transfer. The aim of the present study was to determine morphokinetic parameters easily usable in the laboratory and predictive of embryo development and, most importantly, of embryo competence in producing a clinical pregnancy after day 5 transfer. Methods: A retrospective time-lapse monitoring analysis of morphokinetic parameters for 72 fully implanted embryos (group A) were compared to 106 non-implanted embryos (group B), and to 66 embryos with arrested development from the same pool of group A. All the embryos were from 78 patients undergoing ICSI treatment and day 5 embryo transfers. Results: A day 3 embryo will develop into a viable blastocyst if the following ranges of morphokinetic parameters are met: t1 (between 18.4 h and 30.9 h post-ICSI), t2 (21.4-34.8 h), t4 (33.1-57.2 h), t7 (46.1-82.5 h), t8 (46.4-97.8 h), tC-tF (7.7-22.9 h) and s3 (0.7-30.8 h). On day 5 embryos with the highest probability to implant are those with a cc3 between 9.7 h and 21 h. Conclusions: Morphokinetic parameters are helpful to make appropriate decisions for the disposition of each embryo. It is recommended that each laboratory should determine its own ranges of in vitro development (IVD-MKP) and implantation-associated (IMP-MKP) morphokinetic parameters. © 2013 The Author(s). Source


Bonaventura G.,University of Catania | Bonaventura G.,National Research Council Italy | Chamayou S.,Unita di Medicina della Riproduzione | Liprino A.,University of Catania | And 4 more authors.
PLoS ONE | Year: 2015

Background Stem cells are capable of self-renewal and differentiation into a wide range of cell types with multiple clinical and therapeutic applications. Stem cells are providing hope for many diseases that currently lack effective therapeutic methods, including strokes, Huntington's disease, Alzheimer's and Parkinson's disease. However, the paucity of suitable cell types for cell replacement therapy in patients suffering from neurological disorders has hampered the development of this promising therapeutic approach. Aim The innovative aspect of this study has been to evaluate the neural differentiation capability of different tissue-derived stem cells coming from different tissue sources such as bone marrow, umbilical cord blood, human endometrium and amniotic fluid, cultured under the same supplemented media neuro-transcription factor conditions, testing the expression of neural markers such as GFAP, Nestin and Neurofilaments using the immunofluorescence staining assay and some typical clusters of differentiation such as CD34, CD90, CD105 and CD133 by using the cytofluorimetric test assay. Results Amniotic fluid derived stem cells showed a more primitive phenotype compared to the differentiating potential demonstrated by the other stem cell sources, representing a realistic possibility in the field of regenerative cell therapy suitable for neurodegenerative diseases. Copyright © 2015 Bonaventura et al. Source

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