نتایج جستجو برای: embryo quality

تعداد نتایج: 817042  

2014
Satoshi Tsukamoto Taichi Hara Atsushi Yamamoto Seiji Kito Naojiro Minami Toshiro Kubota Ken Sato Toshiaki Kokubo

Embryo quality is a critical parameter in assisted reproductive technologies. Although embryo quality can be evaluated morphologically, embryo morphology does not correlate perfectly with embryo viability. To improve this, it is important to understand which molecular mechanisms are involved in embryo quality control. Autophagy is an evolutionarily conserved catabolic process in which cytoplasm...

Journal: :journal of agricultural science and technology 2013
m. razi r. jalili marandi h. doulati baneh b. hosseini r. darvishzadeh

the major objective of seedless grape breeding program is production of grapes with high quality. breeding of seedless grapes is difficult because the embryos are aborted after fertilization. embryo rescue technique is utilized to obtain plants from crosses between seedless cultivars. in the present study, the effect of paternal genotypes and different iaa concentrations in presence of ba appli...

2011
Byung Chul Jee Chang Suk Suh Seok Hyun Kim Shin Yong Moon

PURPOSE To investigate the direct relationship between the follicular fluid (FF) level of soluble human leukocyte antigen G (HLA-G) and fertilizability of the corresponding oocyte as well as the morphological quality of the corresponding embryo. MATERIALS AND METHODS Sixty-three patients were stimulated with recombinant FSH combined with gonadotropin-releasing hormone (GnRH) agonist long (n=5...

Journal: :international journal of reproductive biomedicine 0
ashraf kazemi fatemeh ramezanzadeh mohammad hosein nasr-esfahani ali akbar saboor yaraghi mehdi ahmadi

background: fat-rich diet may alter oocyte development and maturation and embryonic development by inducing oxidative stress (os) in follicular environment. objective: to investigate the relationship between fat intake and oxidative stress with oocyte competence and embryo quality. materials and methods: in observational study follicular fluid was collected from 236 women undergoing assisted re...

2013
Qinghong Zhao Tailang Yin Jin Peng Yujie Zou Jing Yang Aiguo Shen Jiming Hu

Embryo quality is crucial to the outcome of in vitro fertilization (IVF); however, the ability to precisely distinguish the embryos with higher reproductive potential from others is poor. Morphologic evaluation used to play an important role in assessing embryo quality, but it is somewhat subjective. The culture medium is the immediate environment of the embryos in vitro, and a change of the su...

Amjad Hossain, Ashok Agarwal Eduardo Sanz John Phelps Maha Mahadevan

The Society for Assisted Reproductive Technology (SART) method of embryo grading is unique, simple, and widely practiced, and its use has been mandatory for SART membership programs since 2010. Developed by SART in 2006, the current embryo grading system categories, “good, fair, and poor,” are limited because they do not describe the best 1-2 embryos in the interest of keeping pace with the shi...

2012
D. Bukowska B. Kempisty H. Piotrowska R. Walczak P. Sniadek K. P. Brussow J. M. Jaskowski M. Nowicki

The quality of oocytes-embryos can be determined by several techniques, including morphological, molecular, cellular and biochemical ones. The morphological methods of female gamete or embryo quality assessment often use thе following in vitro manipulation procedures such as: in vitro maturation (IVM), in vitro fertilization (IVF) and in vitro embryo production (IVP). However, these methods are...

2014
Hans-Joerg Fugel Mark Connolly Mark Nuijten

BACKGROUND New techniques in assessing oocytes and embryo quality are currently explored to improve pregnancy and delivery rates per embryo transfer. While a better understanding of embryo quality could help optimize the existing "in vitro fertilization" (IVF) therapy schemes, it is essential to address the economic viability of such technologies in the healthcare setting. METHODS An Embryo-D...

ژورنال: ارمغان دانش 2020

Background & aim: Nonylphenol (NP) has been known as an immunosuppressant agent, and reported to induce oxidative stress, to impact gonadal cells nucleus and to reduce the fertilizing potential. Therefore, present study was aimed to evaluate the protective effect of Satureja Khuzestanica, as a potential antioxidant, on in vitro fertilized embryos development following exposure to NP.  Methods: ...

One of the most important factors related to male fertility is sperm chromatin status. Under Assisted Reproductive Techniques (ART), especially Intracytoplasmic Sperm Injection (ICSI), the natural selection of high quality sperm with intact chromatin is not possible. Therefore, embryo quality and pregnancy rate decreased for damaged DNA of sperms involved in the fertilization of eggs. Thus, thi...

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