| HOLUBCOVÁ, Zuzana, Drahomira KYJOVSKA, Martina MARTONOVA, Dana PARALOVA, Tereza KLENKOVA and Sona KLOUDOVA. Human Egg Maturity Assessment and Its Clinical Application. JOVE-JOURNAL OF VISUALIZED EXPERIMENTS. CAMBRIDGE: JOURNAL OF VISUALIZED EXPERIMENTS, 2019, AUG 2019, No 150, p. 1-8. ISSN 1940-087X. Available from: https://dx.doi.org/10.3791/60058. |
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@article{1623021,
author = {Holubcová, Zuzana and Kyjovska, Drahomira and Martonova, Martina and Paralova, Dana and Klenkova, Tereza and Kloudova, Sona},
article_location = {CAMBRIDGE},
article_number = {150},
doi = {http://dx.doi.org/10.3791/60058},
keywords = {Developmental Biology; Issue 150; in vitro fertilization; assisted reproduction; human oocyte maturation; immature oocytes; timing of ICSI; polarized light microscopy; meiotic spindle},
language = {eng},
issn = {1940-087X},
journal = {JOVE-JOURNAL OF VISUALIZED EXPERIMENTS},
title = {Human Egg Maturity Assessment and Its Clinical Application},
url = {http://dx.doi.org/10.3791/60058},
volume = {AUG 2019},
year = {2019}
}
TY - JOUR
ID - 1623021
AU - Holubcová, Zuzana - Kyjovska, Drahomira - Martonova, Martina - Paralova, Dana - Klenkova, Tereza - Kloudova, Sona
PY - 2019
TI - Human Egg Maturity Assessment and Its Clinical Application
JF - JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
VL - AUG 2019
IS - 150
SP - 1-8
EP - 1-8
PB - JOURNAL OF VISUALIZED EXPERIMENTS
SN - 1940087X
KW - Developmental Biology
KW - Issue 150
KW - in vitro fertilization
KW - assisted reproduction
KW - human oocyte maturation
KW - immature oocytes
KW - timing of ICSI
KW - polarized light microscopy
KW - meiotic spindle
UR - http://dx.doi.org/10.3791/60058
L2 - http://dx.doi.org/10.3791/60058
N2 - The optimal timing of intracytoplasmic sperm injection (ICSI) is of a serious concern for fertility programs because untimely sperm entry diminishes the egg's developmental competence. Presence of the first polar body (PB) together with the meiotic spindle indicates completion of the oocyte maturation and the egg's readiness for fertilization. In clinical practice, it is customary to assume that all oocytes displaying a PB are mature metaphase (MII) oocytes. However, PB extrusion precedes the formation of the bipolar MII spindle. This asynchrony makes the mere presence of PB an unreliable marker of oocyte maturity. Noninvasive spindle imaging using polarized light microscopy (PLM) allows quick and easy inspection of whether the PB-displaying oocyte actually reassembled a meiotic spindle prior to ICSI. Here, we present a standard protocol to perform human egg maturity assessment in the clinical laboratory. We also show how to optimize the time of ICSI with respect to the oocyte's developmental stage in order to prevent premature sperm injection of late-maturing oocytes. Using this approach, even immature oocytes extruding PB in vitro can be clinically utilized. Affirmation that MII spindle is present prior to sperm injection and individual adjustment of the time of ICSI is particularly important in poor prognosis in-vitro fertilization (IVF) cycles with a low number of oocytes available for fertilization.
ER -
HOLUBCOVÁ, Zuzana, Drahomira KYJOVSKA, Martina MARTONOVA, Dana PARALOVA, Tereza KLENKOVA and Sona KLOUDOVA. Human Egg Maturity Assessment and Its Clinical Application. \textit{JOVE-JOURNAL OF VISUALIZED EXPERIMENTS}. CAMBRIDGE: JOURNAL OF VISUALIZED EXPERIMENTS, 2019, AUG 2019, No~150, p.~1-8. ISSN~1940-087X. Available from: https://dx.doi.org/10.3791/60058.
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