Results 211 to 220 of about 50,385 (254)

Simultaneous swim-up/swim-down of sperm in assisted reproduction procedures

Journal of Assisted Reproduction and Genetics, 1993
High-quality motile human spermatozoa were obtained following treatment of semen by simultaneous swim-up into medium and swim-down into an isotonic 40% Percoll solution.This procedure was significantly better than the swim-up method and comparable to discontinuous Percoll gradient centrifugation. Recovery rates of motile sperm were 35% for swim-up, 65%
M Almagor, Haim Yaffe, Miriam Almagor
exaly   +3 more sources

Increased recovery of swim-up spermatozoa by application of “antigravitational” centrifugation

Fertility and Sterility, 1999
To compare the quantity and quality of sperm recovered following the 10-minute application of an antigravitational force during the swim-up procedure with the standard 60-minute swim-up (SSU) procedure.Prospectively controlled in vitro study.Private andrology laboratory and hospital-based infertility practice.Equal aliquots of semen were evaluated ...
C J, Babbo, B R, Hecht, R S, Jeyendran
openaire   +2 more sources

Swim-up procedure selects spermatozoa with longer telomere length

Mutation Research - Fundamental and Molecular Mechanisms of Mutagenesis, 2010
Telomere length and sperm DNA fragmentation were determined in sperm samples from 27 patients, using a quantitative PCR (Q-PCR) assay and the Sperm Chromatin Dispersion (SCD) test, respectively. Comparisons of the samples before and after swim-up processing demonstrated that this procedure selects a sperm population with longer average telomere size ...
Rebeca, Santiso, María, Tamayo, Jaime, Gosálvez, Marcos, Meseguer, Nicolás, Garrido, José Luis, Fernández   +5 more
openaire   +2 more sources

A Controlled Study for Gender Selection Using Swim-Up Separation

Gynecologic and Obstetric Investigation, 1999
<i>Objective:</i> To evaluate the success for gender selection using a sample of semen separated by a modified swim-up technique. <i>Design:</i> We retrospectively compared the gender outcome of two treatments (A and B) for either a male or female offspring with those who conceived spontaneously.
M A, Khatamee, S R, Horn, A, Weseley, T, Farooq, S B, Jaffe, R, Jewelewicz   +5 more
openaire   +2 more sources

ULTRASTRUCTURAL AND DNA FRAGMENTATION ANALYSES IN SWIM-UP SELECTED HUMAN SPERM

Archives of Andrology, 2006
Seventeen sperm samples were evaluated by transmission electron microscopy (TEM) before and after swim-up separation. DNA-fragmentation was tested by terminal d-UTP nick end labeling (TUNEL) in unselected and selected semen samples, and the results were analyzed in relation to sperm ultrastructural characteristics detected by TEM.
Piomboni, Paola, Bruni, E., Capitani, Serena, Gambera, Laura, Moretti, Elena, LA MARCA, Antonio, DE LEO, Vincenzo, Baccetti, Baccio   +7 more
openaire   +4 more sources

Influence of swim-up time on the ratio of X- and Y-bearing spermatozoa

European Journal of Obstetrics, Gynecology and Reproductive Biology, 2006
The objective was to examine the separation of X- and Y-bearing spermatozoa in a modified swim-up procedure using fluorescent in situ hybridization (FISH), and to find out the influence of swim-up time on the ratio of X- and Y-bearing spermatozoa.Prospective study.Reproductive testing laboratory in a university hospital.Normal spermatozoa samples were ...
Zi-Jiang Chen, Yingying Qin, Junhao Yan
exaly   +3 more sources

Sensitivity of Guadalupe Bass Swim-up Fry to Hyperoxia

North American Journal of Aquaculture, 2017
Abstract Hatchery-reared fingerling Guadalupe Bass Micropterus treculii are stocked into central Texas rivers to restore threatened populations and combat hybridization with Smallmouth Bass M. dolomieu. Fry survival in hatchery rearing ponds has declined by more than 50% in recent years, and pilot investigations indicated that exposure ...
Michael D Matthews, David Prangnell, Hugh Glenewinkel   +2 more
openaire   +1 more source

Enhanced recruitment of motile spermatozoa by prostasome inclusion in swim-up medium

Human Reproduction, 1994
Prostasomes, which are prostate-derived organelles, were purified from human seminal plasma for inclusion in Earle's balanced salt solution (EBSS) medium with or without human serum albumin. These media were used for swim-up experiments and the subsequent analyses of sperm motility parameters at different incubation times.
FABIANI, Roberto, Johansson L, Lundkvist O, Ronquist G.   +3 more
openaire   +3 more sources

Dextran/Swim-Up Procedure for Ram Sperm Selection

The procedures for separating spermatozoa from seminal plasma are frequently applied in reproductive technologies. Most of these procedures include centrifugation steps, which have detrimental effects on ram spermatozoa. We developed a special dextran/swim-up technique without centrifugation which allows the recovery of highly motile and viable ram ...
Rosaura, Pérez-Pe, Teresa, Muiño-Blanco, José Álvaro, Cebrián-Pérez, Adriana, Casao   +3 more
openaire   +2 more sources

Effect of Motile Sperm Count After Swim Up on Outcome of Intrauterine Insemination

Fertility and Sterility, 1997
To analyze the prognostic value of motile sperm count after swim-up in IUI with husband's sperm in a large group of subfertile couples.Retrospective study.University hospital.Nine hundred two couples undergoing 3,037 treatment cycles.Intrauterine insemination with husband's sperm after swim-up was performed after mild ovarian stimulation with ...
U, Berg, C, Brucker, F D, Berg
openaire   +2 more sources