نتایج جستجو برای: mouse icsi
تعداد نتایج: 284627 فیلتر نتایج به سال:
OBJECTIVE To determine if strict morphology correlates with outcome parameters in couples undergoing intracytoplasmic sperm injection (ICSI). DESIGN Retrospective review. SETTING Academic nonprofit IVF center. PATIENT(S) Couples undergoing IVF/ICSI. INTERVENTION(S) In vitro fertilization and ICSI. MAIN OUTCOME MEASURE(S) Samples were evaluated for total sperm count, motlity, progressi...
OBJECTIVE To evaluate the role of hyaluronic acid (HA) for sperm selection before intracytoplasmic sperm injection (ICSI). DESIGN Three prospective studies. SETTING Private assisted reproduction center in Italy. PATIENT(S) Study 1: 20 men. Study 2: 15 men. Study 3: 206 couples treated with ICSI on a limited number of oocytes per patient (1-3) in accordance with Italian IVF law. INTERVEN...
Intracytoplasmic sperm injection (ICSI) has become the method of choice to treat human male infertility. One of the outstanding problems associated with this technique is our current lack of knowledge concerning the effect of sperm capacitation and motility upon the subsequent development of oocytes following ICSI. In the present study, we first examined the capacitation state of sperm exhibiti...
OBJECTIVE We evaluated the fertilization potential of immature oocytes obtained from controlled ovarian hyperstimulation cycles of patients undergoing ICSI. METHODS We retrospectively analyzed 463 ICSI cycles containing at least one immature oocyte at oocyte denudation. ICSI was performed on mature oocytes at oocyte denudation (metaphase-II [MII] oocytes) and the oocytes that extruded the fir...
To describe a successful pregnancy and delivery after calcium ionophore oocyte activation in a normozoospermic patient with previous repeated failed fertilization after intracytoplasmic sperm injection (ICSI).Case report. In vitro fertilization unit in a university affiliated medical center.A couple with 5 years of unexplained primary infertility who had repeated failed fertilization after ICSI...
هدف از انجام این مطالعه ، بررسی اثر ros درون سلولی اسپرم بر روی پارامترهای کلاسیک ، شکست (df) dna، تغییرات پتانسیل غشا میتوکندریmmp) )، مرگ سلولی ( (apoptosisبا استفاده از تکنیک فلوسایتومتری و ارتباط آن با میزان لقاح و مورفولوژی جنین ها در مردان نابارور کاندید درمان تزریق درون سیتوپلاسمی (icsi) بود. بدین منظور 28 نمونه منی افراد normospermic و 62 نمونه منی بیماران کاندید icsi از زوج های نابارور...
In order to study the impact of procedures of IVF/ICSI technology on sex ratio in China, we conducted this multi-center retrospective study including 121,247 babies born to 93,895 women in China. There were 62,700 male babies and 58,477 female babies, making the sex ratio being 51.8% (Male: Female = 107:100). In univariate logistic regression analysis, sex ratio was imbalance toward females of...
We report two cases of infertility treatment in couples where males suffered from Kartagener's syndrome (KS) and a total absence of motile sperm in the ejaculate. A total of three ICSI cycles was carried out. In all cycles, viable ejaculated or testicular spermatozoa were selected using the hypo-osmotic swelling (HOS) test. Case 1: In the first ICSI cycle total fertilization failure occurred af...
Spermatozoa retrieved from the testis of men with high levels of sperm DNA fragmentation (SDF) in the neat semen tend to have better DNA quality. Given the negative impact of SDF on the outcomes of Assisted Reproductive Technology (ART), an increased interest has emerged about the use of testicular sperm for intracytoplasmic sperm injection (Testi-ICSI). In this article, we used a SWOT (strengt...
BACKGROUND An increased risk of major congenital abnormalities after IVF and ICSI has been described, but underlying mechanisms are unclear. This study evaluates the effects of ovarian hyperstimulation, the in vitro procedure and time to pregnancy (TTP) - as proxy for the severity of subfertility - on the prevalence of dysmorphic features. DESIGN/METHODS Participants were singletons born foll...
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