Results 161 to 170 of about 4,915 (201)

Cytogenetic analysis of human oocytes after subzonal insemination

Prenatal Diagnosis, 1993
AbstractSubzonal insemination has been proposed to achieve fertilization in cases where standard in vitro fertilization has failed. We present the results of chromosome analysis of oocytes after subzonal insemination. Our data suggest that the main cause (76 per cent) of the absence of cleavage after subzonal insemination is the total absence of sperm ...
J, Selva, J P, Wolf, P, Rince, D, Rodrigues, R, Frydman, P, Jouannet   +5 more
openaire   +2 more sources

Subzonal transfer of multiple sperm (MIST) into early human embryos

Molecular Reproduction and Development, 1990
AbstractMicronsemination sperm transfer (MIST) is a technique whereby sperm are transferred into the perivitelline space (PVS) with the aid of a micromanipulator. MIST is now used to investigate whether blastomere membranes of early human embryos are capable of fusing with the sperm as in the metaphase II oocyte.
Ng, S.C., Sathananthan, A.H., Bongso, T.A., Ratnam, S.S., Tok, V.C.N., Ho, J.K.C.   +5 more
openaire   +2 more sources

Induction of acrosome reaction in human spermatozoa used for subzonal insemination

Human Reproduction, 1992
Human spermatozoa were injected into the perivitelline space of oocytes from 43 couples (44 cycles) in whom fertilization had failed in conventional in-vitro fertilization (IVF). The spermatozoa were treated to enhance the percentage of acrosome-free spermatozoa either by incubation for 24 h in T6 medium with 50% follicular fluid (v/v) or by incubation
Palermo, Gianpiero, Joris, Hubert, Devroey, Paul, Van Steirteghem, Andre   +3 more
openaire   +3 more sources

Subzonal insertion of multiple sperm is a treatment for male factor infertility

Fertility and Sterility, 1994
To determine whether subzonal insemination of multiple sperm is an effective treatment for male factor infertility.Subzonal insemination by micromanipulation of sperm and oocytes for male factor patients.Two hundred eight patients were selected on previous fertilization history and/or semen parameters.
J, Catt, U, Krzyminska, L, Tilia, E, Csehi, J, Ryan, I, Pike, C, O'Neill   +6 more
openaire   +2 more sources

Pregnancies, growth and development of children conceived by subzonal injection of spermatozoa

Human Reproduction, 1999
Subzonal injection of spermatozoa (SUZI) was one of the first micromanipulation techniques efficient in treating male factor infertility and unexplained in-vitro fertilization failures. The aim of this retrospective study was to evaluate the in-vitro development of embryos conceived by SUZI, the obstetric outcome, the rate of congenital malformations ...
C, Patrat, J P, Wolf, S, Epelboin, J N, Hugues, F, Olivennes, P, Granet, J R, Zorn, P, Jouannet   +7 more
openaire   +2 more sources

Human oocyte cytometry and fertilisation rate after subzonal insemination

Zygote, 1995
SummaryThe cytometry of 545 oocytes was evaluated during subzonal insemination (SUZI; 85 attempts), on day 0 (egg retrieval and SUZI), day 1 and day 2(embryo transfer). On day 0, the egg and oolemma diameters (mean ± SD) were 164.0 ± 19.6 μm and 114.2±16.8 μ5m respectively.The zona thickness was 17.8± 13.4 μm and correlated with the oolemma diameter(r=
J P, Wolf, S, Bulwa, D, Rodrigues, P, Jouannet   +3 more
openaire   +2 more sources

Subzonal insemination and zona breaching techniques for assisting conception in vitro

Baillière's Clinical Obstetrics and Gynaecology, 1994
The following comments can be made with regard to zona breaching procedures (PZD) and SUZI. First and foremost, it is important to establish that fertilization cannot occur with microdrop IVF or conventional IVF before proceeding with microassisted fertilization technology.
S, Fishel, K, Dowell, F, Lisi, L, Rinaldi   +3 more
openaire   +2 more sources

EASTERN GALEGA IN THE MIDDLE TAIGA SUBZONE OF YAKUTIA

INTERNATIONAL AGRICULTURAL JOURNAL
The article presents data on the productivity of a new perennial crop, eastern galega, in the conditions of the Middle Taiga subzone of Yakutia. Experimental research was conducted on an irrigated plot within the Lena River agricultural landscape. The soil of the experimental plot is frozen meadow-chernozem solonetzic-solonchak.
Kharitina Maksimova, Anna Smetanina, Nikolay Kolesnikov, Valentina Nikolaeva   +3 more
openaire   +1 more source

Subzonal insemination: A prospective randomized study in patients with abnormal sperm morphology

International Journal of Gynecology & Obstetrics, 1993
To evaluate in a prospective randomized study the outcome of subzonal insemination (SUZI) in patients with male subfertility.In a period of 7 months, 48 patients underwent IVF treatment for male subfertility reasons. Normal insemination and SUZI were performed on sibling oocytes. Patients were divided into three groups depending on the sperm morphology
S, Gordts, G, Garcia, M, Vercruyssen, P, Roziers, R, Campo, K, Swinnen   +5 more
openaire   +2 more sources

Subzonal insemination

The Lancet, 1992
S. Fishel, J. Timson, B. Faratian, E.M. Symonds   +3 more
openaire   +1 more source