Search Results
Results 151 - 200 of 1535
1 2 3 4 5 6 7 8 9 10 >
Naru Tahira - - 2008
INTRODUCTION: We aimed to determine pregnancy and miscarriage rates following intracytoplasmic sperm injection (ICSI) cycles using retrieved epididymal and testicular sperm in azoospermic men and ejaculated sperm in oligospermic and normospermic men. MATERIALS AND METHODS: This retrospective study was carried out on 517 couples who underwent ICSI. They included 96 ...
Bhattacharya Sudhindra Mohan - - 2008
OBJECTIVES: To study the relationship of various sperm characteristics with repeated unexplained early pregnancy loss. BASIC PROCEDURE: Semen samples from husbands of 74 couples with the history of repeated early pregnancy loss were analyzed as per WHO criteria, and DNA integrity was studied in each case by Acridine Orange staining ...
Verza Sidney S - - 2008
OBJECTIVE: To evaluate the impact of sperm defect severity and the type of azoospermia on the outcomes of intracytoplasmic sperm injection (ICSI). MATERIALS AND METHODS: This study included 313 ICSI cycles that were divided into two major groups according to the source of spermatozoa used for ICSI: 1) Ejaculated (group ...
Hinz Stefan - - 2008
INTRODUCTION: Literature regarding the influence of maternal age on pregnancy rates with male partners who have undergone vasectomy reversal is sparse. With the tendency towards delayed childbirth, the increased use of vasectomy as means of family planning, and advances in reproductive techniques, this issue is very important for patient counseling. ...
Zhou Yuchuan - - 2008
Mammalian sperm capacitation is an essential prerequisite to fertilizion. Although progress had been made in understanding the physiology and biochemistry of capacitation, little is known about the potential roles of epididymal proteins during this process. Here we report that HongrES1, a new member of the SERPIN (serine proteinase inhibitor) family ...
Revicki Dennis - - 2008
Premature ejaculation (PE) is a common sexual dysfunction among men which affects men and their partners. Little qualitative data are available to characterize the impact of PE on men and their partners about ejaculatory control, sexual satisfaction, emotional distress and relationships. The objective of this study was to assess the ...
Pizzari Tommaso - - 2008
A fundamental challenge in evolutionary biology is to resolve the mechanisms that maintain paternity a hypervariable fitness component. Because females are often sexually promiscuous, this challenge hinges on establishing the mechanisms through which the ejaculates of different males compete for fertilisation (sperm competition). The competitive quality of an ejaculate is ...
Lee Tsung-Hsien - - 2008
To determine the efficiency of sperm motion characteristics as predictors for normal (2PN) and polypronulceate (PPN) zygotes in IVF. A retrospective cohort analysis for a total of 230 couples undergoing IVF treatment in a single infertility center. Subsequent to semen analysis and hemizona assay, unexpected fertilization failure would appear to ...
Morrell Jane M - - 2008
Artificial insemination is not as widely used in horses as in other domestic species, such as dairy cattle and pigs, partly because of the wide variation in sperm quality between stallion ejaculates and partly due to decreased fertility following the use of cooled transported spermatozoa. Furthermore, predictive tests for sperm ...
Besselink D E - - 2008
Insemination with donor sperm is an option for couples for whom in vitro fertilisation (IVF) or intra-cytoplasmic sperm injection (ICSI) has been unsuccessful, couples with azoospermia and for single women or same sex couples. Insemination of sperm can be done via cervical (CI) or intra-uterine (IUI) routes. IUI has been ...
Van Peperstraten A - - 2008
Azoospermia, the absence of sperm in ejaculated semen, is the most severe form of male-factor infertility and is present in approximately 5% of all investigated infertile couples. The advent of intra-cytoplasmic sperm injection (ICSI) has transformed treatment of this type of severe male-factor infertility. Sperm can be retrieved for ICSI ...
Boyd Mark A MA National Centre in HIV Epidemiology and Clinical Research, University of New South Wales, Sydney, NSW 2010, Australia. - - 2008
The antiretroviral enfuvirtide (ENF) is injected subcutaneously using a 27-gauge needle. Injection site reactions (ISRs) can affect long-term ENF tolerability. Alternative ENF delivery methods may ameliorate ISRs. We conducted a multicentre, open-label, randomized controlled trial in which patients receiving ENF were randomized to continue receiving ENF by a 27-gauge needle, ...
Saxena Pikee - - 2008
OBJECTIVE: To determine whether or not sperm function parameters are altered in male partners of couples with a history of idiopathic recurrent pregnancy loss (RPL). DESIGN: In comparison with proven fertile volunteers, sperm function parameters like hypo-osmotic swelling (HOS), acrosomal status (AS), and nuclear chromatin decondensation (NCD) were assessed in ...
Schiff Jonathan D - - 2007
OBJECTIVE: To investigate sperm morphology on the day of fresh testicular sperm extraction (TESE) with intracytoplasmic sperm injection (ICSI), and its effect on fertilization and pregnancy rates, as TESE in conjunction with ICSI results in high fertilization and pregnancy rates in most patients, but to our knowledge only one small ...
Abu-Musa Antoine A - - 2007
OBJECTIVE: To assess the effect of the Lebanese civil war on sperm parameters. DESIGN: Retrospective review of patient records. SETTING: Males providing semen samples at a university laboratory. Semen samples collected 1985-1989 (during the war) were compared with those obtained 1991-1995 (postwar). PATIENT(S): Males with or without a history of ...
Benda Norbert - - 2007
When assessing the effectiveness of a hormonal method of fertility control in men, the classical approach used for the assessment of hormonal contraceptives in women, by estimating the pregnancy rate or using a life-table analysis for the time to pregnancy, is difficult to apply in a clinical development program. The ...
Gianaroli Luca - - 2008
OBJECTIVE: To investigate the characteristics of birefringence in human sperm heads and apply polarization microscopy for sperm selection at intracytoplasmic sperm injection (ICSI). DESIGN: Prospective randomized study. SETTING: Reproductive Medicine Unit, Società Italiana Studi Medicina della Riproduzione, Bologna, Italy. PATIENT(S): A total of 112 male patients had birefringent sperm selected ...
Hoflack G - - 2008
In a previous study, we demonstrated that Belgian Blue (BB) bulls have a higher prevalence of small scrota and poorer semen morphology compared to the Holstein Friesian (HF) breed in Belgium. The present study tested the hypothesis that the underlying reason for these BB traits negative to fertility was testicular ...
Seidel G E GE - - 2008
In six field trials, doses between 1.0 and 6.0 x 10(6) total sexed, frozen-thawed sperm were inseminated into the uterine body or bilaterally into the uterine horns of heifers and nursing Angus cows 12 or 24h after observed estrus. Except for one comparison in one trial in which uterine body ...
Paradiso Galatioto Giuseppe - - 2008
We performed a randomized, prospective, controlled, intention to treat study in order to determine the effectiveness of an antioxidant therapy in improve the quality of seminal fluid parameters and the natural pregnancies in men with persistent oligospermia (5-20 million/ml) 6 months after retrograde embolization. Forty-two subjects were enrolled and randomized ...
Esteves Sandro C - - 2007
OBJECTIVE: The aim of this study was to analyze the influence of autoantibodies against spermatozoa present in the semen on the outcome of in vitro fertilization with intracytoplasmic sperm injection (ICSI). MATERIALS AND METHODS: We performed a retrospective analysis of clinical and laboratorial data from a six year-period ICSI cycles. ...
Hammoud Ahmad O - - 2007
The purpose of this study was to examine the effect of sperm preparation by density gradient on the intra-individual variation in sperm motility. Patients presenting for density gradient (DG) sperm preparation were analyzed retrospectively. Patients who had more than one preparation were included. The variation within each patient was studied ...
Bolduc Stéphane - - 2007
Advances in surgical techniques have improved the outcome of microsurgical vasovasostomy (VV). We performed a retrospective analysis of surgical procedures to determine outcomes and predictors of VV success, to develop Kaplan-Meier Curves for predicting VV outcomes and to evaluate the use of alpha-glucosidase (AG) to predict outcomes. We undertook a ...
Nasr-Esfahani M H - - 2009
Different methods have been used to evaluate the beneficial effect of varicocelectomy; these include semen parameters and pregnancy rate. Because of high biological variability of semen parameters, sperm functional tests have been considered as an efficient end point in assessment of fertility. Therefore, the aim of this study was to ...
Conde Pamela A - - 2008
The interest for South American camelids has increased in the last years. The aim of the present research was to compare the in vitro production of Lama glama embryos using two techniques: in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI). For IVF technique, we compared the effect of adding ...
Olsson Mats - - 2007
Sperm storage is a widespread phenomenon across taxa and mating systems but its consequences for central fitness parameters, such as sex ratios, has rarely been investigated. In Australian painted dragon lizards (Ctenophorus pictus), we describe elsewhere that male reproductive success via sperm competition is largely an effect of sperm storage. ...
Shahverdi Abdolhossein - - 2007
BACKGROUND: The purpose of this study was to evaluate the efficiency of intracytoplasmic sperm injection (ICSI) and Piezo-assisted sperm injection after pretreatment with calcium ionophore (CaI) on the mouse embryo development. METHODS: In this study, the conventional ICSI and Piezo-ICSI procedures were used. The efficacy of the methods was examined ...
Bujan Louis - - 2007
OBJECTIVE: To examine the safety and effectiveness of assisted reproduction using sperm washing for HIV-1-serodiscordant couples wishing to procreate where the male partner is infected. DESIGN AND METHODS: A retrospective multicentre study at eight centres adhering on the European network CREAThE and involving 1036 serodiscordant couples wishing to procreate. Sperm ...
Yamashiro Hideaki - - 2007
The objective of this study was to develop an ideal freezing extender and method for rat epididymal sperm cryopreservation. Epididymal sperm collected from 30 Wistar males was frozen, and experiments were conducted to study its post-thaw characteristics when freezing with raffinose-free buffer or various concentrations of raffinose and egg yolk ...
Stember D S - - 2007
Nocturia is a common source of sleep disturbance in men and can result from many different causes. A patient-generated frequency/volume chart, along with several simple mathematical formulas, is used to classify nocturia according to its principal aetiology. The categories are nocturnal polyuria (NP), reduced voided volumes, 24-h polyuria and a ...
Momen Mohamed N - - 2007
AIM: To assess the changes in semen parameters in men with spinal cord injury (SCI) and the possible causes of these changes. METHODS: The study included 45 subjects with SCI. Semen retrieval was done by masturbation (2), vigorous prostatic massage (n = 13), penile vibratory stimulation (n = 13) or ...
Riel Jonathan M - - 2007
This study tested a method for maintaining human spermatozoa without freezing for subsequent use in intracytoplasmic sperm injection (ICSI). We demonstrated that human sperm stored in electrolyte-free solution maintain their motility and viability for at least 4 and 6 weeks, respectively. We also have shown that preserved spermatozoa are fully ...
Gerber Peter Arne - - 2008
OBJECTIVE: To report an intracytoplasmatic sperm injection (ICSI) pregnancy achieved in a couple with male primary cilia dyskinesia (PCD) with viable sperm that were detected using a 1.48 microm wavelength diode laser. DESIGN: Case report. SETTING: University hospital. PATIENT(S): A 37-year-old man with infertility due to primary cilia dyskinesia; semen ...
Ramlau-Hansen C H - - 2007
BACKGROUND: Obesity is a strong predictor of fecundity and maternal obesity may well program semen quality during pregnancy, but to our knowledge, no published studies have evaluated this hypothesis. METHODS: From a Danish pregnancy cohort established in 1984-87, 347 out of 5109 sons were selected for a follow-up study conducted ...
Hinrichs K - - 2007
We evaluated the effect of different activation treatments on the production of blastocysts and foals by nuclear transfer. Donor cells were prepared using roscovitine treatment, which has previously been associated with increased production of viable offspring. All activation treatments were followed by culture in 6-dimethylaminopurine (6-DMAP) for 4 h. In ...
Bakircioglu Mustafa Emre - - 2007
The aim of this study was to evaluate the impact of gonadotrophin therapy in combination with intracytoplasmic sperm injection (ICSI) in men with hypogonadotrophic hypogonadism (HH). Twenty-five azoospermic men were diagnosed with HH due to low FSH, LH and total testosterone concentrations. These patients were treated with human chorionic gonadotrophin ...
Bouwmans Clazien A M - - 2008
OBJECTIVE: To provide detailed information about costs of in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) treatment stages and to estimate the cost per IVF and ICSI treatment cycle and ongoing pregnancy. DESIGN: Descriptive micro-costing study. SETTING: Four Dutch IVF centers. PATIENT(S): Women undergoing their first treatment cycle with ...
Bujan Louis - - 2007
BACKGROUND: To date, assisted reproductive technology (ART) with sperm washing is offered to serodiscordant couples with an human immunodeficiency virus-1 (HIV-1) infected male partner in order to have a child while reducing the risk of transmission to the woman. However, ART programmes are not possible if the man is azoospermic. ...
- - 2007
The introduction of intracytoplasmic sperm injection (ICSI) in 1992 has dramatically changed the management of severe male infertility. In severe male infertility, live birth rates with ICSI are superior to those with other non-donor treatments. In non-male infertility, however, pregnancy rates are not better with ICSI than with in vitro ...
Kuroda Ken - - 2007
Artificial insemination (AI) subfertility is an indication of failure of AI with frozen-thawed sperm classified as normal by conventional semen examination. Recently, 8 AI-subfertile Japanese Black cattle (S1-S8) were identified using the routine AI test or in vivo fertilization test, which included AI with frozen-thawed sperm of superovulated females and ...
Bathgate R - - 2008
Recent developments in reproductive technologies have enabled the production of piglets of a predetermined sex via non-surgical, low dose artificial insemination. The practical application of sex-sorting technology to the pig is made challenging by the large numbers of sperm required for successful insemination of sows. One way of overcoming the ...
Nakahara Miri - - 2007
We studied changes in the number of sperm within two kinds of female sperm-storage organ in the damselfly Ischnura senegalensis (Odonata: Coenagrionidae): the bursa copulatrix and the spermatheca. We counted the number of sperm within each storage organ and tested their viability after a single copulation in female damselflies kept ...
Henkel Ralf - - 2008
OBJECTIVE: To compare different staining methods to evaluate human sperm morphology. DESIGN: Prospective study. SETTING: Patients at the Departments of Dermatology and Urology, University of Jena, Germany. PATIENT(S): A total of 94 randomly collected patients attending the andrological outpatient clinics of the Departments of Dermatology and Urology, University of Jena, ...
Woodward Bryan J - - 2008
OBJECTIVE: To investigate whether the direction of sperm loading and exit from the injection pipette during intracytoplasmic sperm injection (ICSI) had any bearing on ability to cause fertilization or affect subsequent embryonic development. DESIGN: Prospective randomized trial. SETTING: Hospital-based IVF center. PATIENT(S): Twenty-five couples participating in an intracytoplasmic sperm injection ...
Hung Andrew J - - 2007
PURPOSE: We evaluated the clinical characteristics of men with uniform testicular maturation arrest and nonobstructive azoospermia or severe oligospermia, including the frequency of genetic defects and outcome of intracytoplasmic sperm injection with or without testicular sperm extraction. MATERIALS AND METHODS: We identified a group of 32 men with nonobstructive azoospermia ...
Ramlau-Hansen Cecilia Høst - - 2007
Jensen et al. (Am J Epidemiol 2007;165:583-90) reported for the first time that men whose mothers had received fertility treatment had poor semen quality. This result could be confounded by the mothers' body mass index. Obesity is a strong predictor of fecundity and could have a programming effect on semen ...
Tremellen Kelton - - 2007
BACKGROUND: Evidence has accumulated supporting the role of reactive oxygen species (ROS) in the pathogenesis of sperm dysfunction among men with infertility. Damage to sperm DNA by ROS can lead to failure of conception, miscarriage or potentially even childhood cancer. The objective of this study was to examine the effect ...
Camacho Francisco J - - 2007
The serotonin 1A receptor agonist 8-hydroxy-2-(di-n-propylamino)tetralin (8-OH-DPAT) produces a drastic facilitation of ejaculation characterized by a significant reduction in the number of pre-ejaculatory intromissions and a shortening of ejaculation latency. In the present study, the authors evaluated whether this facilitation of ejaculation can induce a reward state assessed by conditioned ...
Bujan Louis - - 2007
OBJECTIVE: Assisted reproduction techniques can minimize the risk of HIV female contamination when the male partner is HIV-infected. The aim of this study was to investigate the efficiency of sperm washing and intrauterine insemination (IUI) in these couples. STUDY DESIGN: Retrospective comparative study. Eighty-four HIV-1 serodicordant couples underwent 294 IUI. ...
Weissenberg Ruth - - 2007
A case study involving four female patients inseminated with sperm samples from the same donor is reported. Routine amniocentesis of one of the patients revealed that the fetus is a carrier of a balanced reciprocal translocation, 46,XY,t(1;10)(q12;q11.2), which was subsequently detected in the donor. Counselled amniocentesis in the three remaining ...
1 2 3 4 5 6 7 8 9 10 >