Results 211 to 220 of about 114,907,480 (246)

243 EFFECT OF OOCYTE RECOVERY TECHNIQUES ON IN VITRO MATURATION OF SWINE OOCYTES

Reproduction, Fertility and Development, 2008
The aim of this study was to compare 2 different techniques to obtain swine oocytes from abattoir ovaries. Ovaries were washed in saline at 35°C and submitted to slashing or aspiration, simultaneously. For the slashing group, ovaries were held with a hemostat inside a beaker containing 35 mL of HEPES-buffered Tyrode’s media (HbT) and follicles (2–6 mm)
F. R. O. de Barros, M. G. Marques, M. D. Goissis, M. A. Peres, M. P. Milazzotto, F. S. Maria, M. E. O. A. Assumpção, J. A. Visintin   +7 more
openaire   +1 more source

Influence of the collection technique of prepubertal goat oocytes on in vitro maturation and fertilization

Theriogenology, 1994
Prepubertal goat ovaries obtained from a slaughterhouse were used to study the influence of the oocyte collection technique (dissection, aspiration and slicing) on the number of oocytes recovered and their capacity for maturation and fertilization in vitro.
A, Martino, M J, Palomo, T, Mogas, M T, Paramio   +3 more
openaire   +2 more sources

In vitro oocyte maturation from unstimulated cycles: does it offer a realistic chance to overcome the problem of repeated oocyte maturation arrest in IVF?

Archives of Gynecology and Obstetrics, 2011
This report describes the use of in vitro oocyte maturation in two patients with history of repeated oocyte maturation arrest (OMA) from in vitro fertilization.
Safak Olgan, Bulent Gulekli
exaly   +2 more sources

Is in vitro maturation of oocytes retrieved ex vivo from ovarian tissue an effective fertility preservation technique in the presence of organic ovarian cysts?

European Journal of Obstetrics & Gynecology and Reproductive Biology, 2023
In vitro maturation (IVM) of oocytes retrieved ex vivo from ovarian tissue (OTO-IVM) could be an additional source of mature oocytes with the potential to optimise medical fertility preservation (FP) after oophorectomy. It is often undertaken at the same time as the ovarian tissue cryopreservation (OTC).
Bourg, Mona, Moreau, Jessika, Carles, Manon, Cadoret, Florence, Lesourd, Florence, Tournier, Anna, Léandri, Roger, Gatimel, Nicolas   +7 more
openaire   +3 more sources

Experiments to improve in vitro fertilization techniques for in vivo-matured porcine oocytes

Theriogenology, 1992
Three experiments were designed for the in vitro fertilization of in vivo matured oocytes following different sperm treatments: In experiment I, spermatozoa (sperm rich fraction) were capacitated in isolated and ligated uterine horns of estrous gilts (Method A) for at least 3.5 hours and 1x10(6) sperm/ml were exposed to mature oocytes.
openaire   +2 more sources

Pregnancy and Calving Rates of Cloned Dromedary Camels Produced by Conventional and Handmade Cloning Techniques and In Vitro and In Vivo Matured Oocytes

Molecular Biotechnology, 2020
Despite practical implication of cloning in camelids, its broad application has been hampered by technical and biological problems. Method of somatic cell nuclear transfer (SCNT) and oocyte competence are the principal technical and biological factors, respectively, that determine the cloning efficiency. This study, therefore, investigated differential
F. Moulavi, B. Asadi-Moghadam, M. Omidi, M. Yarmohammadi, M. Ozegovic, A. Rastegar, S. M. Hosseini   +6 more
openaire   +2 more sources

Effect of recovery technique and culture media onin vitromaturation of indigenous cattle oocytes of Assam

Indian Journal of Animal Research, 2015
The study was undertaken to see the effect of recovery techniques and culture media on in-vitro maturation (IVM) of oocytes indigenous cattle of Assam. Oocytes were collected by aspiration and dissection techniques and were graded as A, B, C and D on the basis of their cumulus cell layers surrounding the zona pellucida.
M. Hussain, P. Chakravarty, S. Soren, S. Deori, S. S. Begum   +4 more
openaire   +1 more source

Evaluation of Pre-maturity of Mouse Oocytes Ovulated from Prepubertal Females using an In Vitro Fertilization Technique

Journal of Mammalian Ova Research, 2006
ABSTRACT The cytogenetic normality and developmental competence of mouse oocytes derived from prepubertal females were investigated to determine ooplasmic maturity after in vitro fertilization (IVF) and to examine the ability of the resultant blastocysts to develop to term. To estimate the effect of body weight and age on ovulation, prepubertal female (
Akinori Mitsui, Midori Yoshizawa
openaire   +1 more source

[Oocytes in-vitro maturation--a new technique for reproductive endocrinologist practitioners].

Harefuah, 2008
In vitro maturation is a new and promising technique in the field of artificial reproductive technology. This method provides an alternative treatment to the known treatments and a solution for one of the most common and disturbing problems of infertility treatment, the hyperstimulation syndrome.
Ariel, Hourvitz, Ettie, Maman, Jehoshua, Dor   +2 more
openaire   +1 more source

[Technique of obtaining mature oocytes via laparoscopy for in-vitro fertilisation (author's transl)].

Geburtshilfe und Frauenheilkunde, 1981
Technique and results of 50 laparoscopies performed on sterility patients to obtain mature oocytes from Graafian follicles to carry out in vitro fertilisation, are reported. In 32% of all laparoscopies and in 52% of all punctured follicles a mature oocyte could be obtained.
W, Feichtinger, S, Szalay, A, Beck, P, Kemeter, H, Janisch   +4 more
openaire   +1 more source