εμφύτευση εμβρύου

Εμφύτευση εμβρύου ονομάζεται η εγκατάσταση του εμβρύου μέσα στο τοίχωμα της μήτρας, με συνέπεια τη διατήρηση της κύησης και την αύξηση του εμβρύου με την ανάπτυξη του πλακούντα.

ΠΡΩΤΟΚΟΛΛΟ ΕΜΒΡΥΟΜΕΤΑΦΟΡΑΣ ΥΠΟΡΕΩΤΙΚΑ ΜΙΑΣ ΒΛΑΣΤΟΚΥΣΤΗΣ¨

εμβρυομεταφορά

«Η ΔΥΝΑΜΗ ΤΟΥ ΕΝΟΣ»

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Κατά η διάρκεια της εξωσωματικής γονιμοποίησης, η εμβρυομεταφορά στη μήτρα της γυναίκας 2 εμβρύων αυξάνει την πιθανότητα εγκυμοσύνης και υγιούς γέννας αλλά ταυτόχρονα αυξάνει και την πιθανότητα πολύδυμης κύησης  άρα και των συνοδών επιπλοκών.

Ανακαλύφθηκε ένζυμο που εμπλέκεται στην υπογονιμότητα και την αποβολή

Λονδίνο

Βρετανοί επιστήμονες εντόπισαν μια πρωτεΐνη που λειτουργεί ως «διακόπτης» γονιμότητας και φαίνεται να αυξάνει την γονιμότητα αν τα επίπεδα της είναι υψηλά ή να «πυροδοτεί» την αποβολή του κυήματος, όταν τα επίπεδα της είναι χαμηλά.

Υποβοηθούμενη εκκόλαψη (assisted hatching) σε κρυοδιατηρημένες βλαστοκύστες.

Η υποβοηθούμενη εκκόλαψη (assisted hatching) είναι μια διαδικασία που περιλαμβάνει απελευθέρωση της βλαστοκύστης από την διαφανή ζώνη. Παρόλο που περιγράφεται εύκολα στα ποντίκια είναι δυσκολότερα αντιληπτή διαδικασία στον ανθρώπινο οργανισμό. Η διαδικασία της εκκόλαψης περιλαμβάνει την λέπτυνση και ρήξη της διαυγούς ζώνης που συμβαίνουν δια μέσου εμβρυικών ενζύμων ή/και ενζύμων της μήτρας και μέσω της επαναλαμβανόμενης επέκτασης και ρήξης της βλαστοκύστης.

Ασφαλείς προβλέψεις για έμβρυα εξωσωματικής

Πρωτοποριακή τεχνική που προβλέπει με μεγαλύτερη ασφάλεια -σε ποσοστό πάνω από 90%- ποια έμβρυα της εξωσωματικής γονιμοποίησης έχουν τις περισσότερες πιθανότητες να αναπτυχθούν κανονικά και ποια όχι, ανακάλυψαν Αμερικανοί επιστήμονες. Η μέθοδος πρόκειται να "μεταφραστεί" σε ένα νέο τεστ που θα κυκλοφορήσει στην αγορά από εταιρία βιοτεχνολογίας, βοηθώντας τις κλινικές γονιμότητας να επιλέξουν το καταλληλότερο έμβρυο για εμφύτευση στην μήτρα της μητέρας.

Νέα μέθοδος εξωσωματικής

Χρησιμοποιώντας την κινηματογραφική μέθοδο της ασυνεχούς εικονοληψίας (με την οποία επιτυγχάνουμε «γρήγορη κίνηση» σε βραδείες διαδικασίες), μια ομάδα ερευνητών του Πανεπιστημίου Στάνφορντ ανέλυσε βίντεο γονιμοποιημένων ωαρίων καθώς αναπτύσσονται κι έτσι προσδιόρισε τρία συγκεκριμένα ορόσημα τα οποία πρέπει να αγγίξουν τα ωάρια προκειμένου να εξελιχθούν σε βλαστοκύστη - ένα πολύ κρίσιμο στάδιο.

Η επίδραση της βιοψίας εμβρύων 3ης ημέρας στην εμφύτευση βλαστοκύστεων : μια μελέτη βασισμένη σε μεταφορά 1 μόνο βλαστοκύστης.

βλαστοκύστη

Σκοπός της παρούσας μελέτης ήταν η αξιολόγηση της επίδρασης της βιοψίας εμβρύων 3ης ημέρας, στην μελλοντική ανάπτυξη και εμφύτευση των  αντίστοιχων βλαστοκύστεων. Η μελέτη αφορούσε μεταφορές μιας μόνο βλαστοκύστης την 5η ημέρα της καλλιέργειας, καθεμιά από τις οποίες προερχόταν αυστηρά από έμβρυο αποτελούμενο από 8 κύτταρα κατά την 3η ημέρα, το οποίο είχε υποβληθεί σε βιοψία 1 ή 2 βλαστομεριδίων.

Συλλογή ανεξάρτητου περιεχόμενου