Results 21 to 30 of about 389,892 (358)

Actin assembly ruptures the nuclear envelope by prying the lamina away from nuclear pores and nuclear membranes in starfish oocytes. [PDF]

open access: yes, 2020
The nucleus of oocytes (germinal vesicle) is unusually large and its nuclear envelope (NE) is densely packed with nuclear pore complexes (NPCs) stockpiled for embryonic development. We showed that breakdown of this specialized NE is mediated by an Arp2/3-
Avilov, I.   +6 more
core   +1 more source

Cumulative live birth rates according to the number of oocytes retrieved after the first ovarian stimulation for in vitro fertilization/intracytoplasmic sperm injection: a multicenter multinational analysis including ∼15,000 women.

open access: yesFertility and Sterility, 2018
OBJECTIVE To evaluate the association between the number of oocytes retrieved and cumulative live birth rates. DESIGN Retrospective multicenter analysis using individual patient data. SETTING Tertiary referral hospitals. PATIENT(S) In total, 14,469
N. Polyzos   +7 more
semanticscholar   +1 more source

Freeze/thaw stress induces organelle remodeling and membrane recycling in cryopreserved human mature oocytes [PDF]

open access: yes, 2016
Purpose: Our aim was to evaluate the ultrastructure of human metaphase II oocytes subjected to slow freezing and fixed after thawing at different intervals during post-thaw rehydration.
Albani, E.   +8 more
core   +1 more source

Altered germline cyst formation and oogenesis in Tex14 mutant mice

open access: yesBiology Open, 2021
During oocyte differentiation in mouse fetal ovaries, sister germ cells are connected by intercellular bridges, forming germline cysts. Within the cyst, primary oocytes form via gaining cytoplasm and organelles from sister germ cells through germ cell ...
Kanako Ikami   +7 more
doaj   +1 more source

Mechanical stress accompanied with nuclear rotation is involved in the dormant state of mouse oocytes

open access: yesScience Advances, 2019
Compression keeps oocytes dormant. The most immature oocytes remain dormant in primordial follicles in the ovary, ensuring the longevity of female reproductive life.
Go Nagamatsu   +4 more
semanticscholar   +1 more source

Comparison of ovarian cycles of Hungarian riverine fish species representing different spawning strategies [PDF]

open access: yes, 2008
Investigations on the ovarian cycle of fish species that inhabit Hungarian rivers are necessitated by both environmental and economic reasons. The objective of our research was to explore new fundamental knowledge concerning the ovarian cycle of the ...
Baska, Ferenc   +6 more
core   +1 more source

Pregnancy outcome of assisted reproductive technology cycle in patients with hypogonadotropic hypogonadism

open access: yesJournal of Human Reproductive Sciences, 2015
CONTEXT: Ovulation induction in patients with hypogonadotropic hypogonadism (HH) is a challenge to the treating physician. The threshold for ovarian response in HH may differ substantially from that of normal patients.
Monna Pandurangi   +2 more
doaj   +1 more source

Assessment of different methods of bovine oocytes collection, maturation and Invitro fertilization of abattoir specimens [PDF]

open access: yesIraqi Journal of Veterinary Sciences, 2017
The aim of this study is designed to evaluate the best methods for cow oocytes collection from abattoir specimens which is the cheapest, easily obtained and bulky number. Forty five fresh cow genitalia specimens and testicle were collected directly after
W.M. Saleh
doaj   +1 more source

Macromolecules Influence Cellular Competence and Expression Level of IGFs Genes in Bovine Oocytes In Vitro

open access: yesAnimals, 2022
In vitro maturation (IVM) of mammalian oocytes, which influences subsequent in vitro development of embryos, is affected by the macromolecule content in culture media for the success of oocyte maturation competence, in which the cytoplasmic and nuclear ...
Uğur Şen   +5 more
doaj   +1 more source

Quality control in oocytes by p63 is based on a spring-loaded activation mechanism on the molecular and cellular level

open access: yeseLife, 2016
Mammalian oocytes are arrested in the dictyate stage of meiotic prophase I for long periods of time, during which the high concentration of the p53 family member TAp63α sensitizes them to DNA damage-induced apoptosis.
Daniel Coutandin   +15 more
doaj   +1 more source

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