Search Results
Results 551 - 600 of 1529
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Makhseed Ma'asoumah - - 2002
OBJECTIVE: To evaluate the recovery rate of sperm from the testis using percutaneous testicular aspiration with a 22-gauge hypodermic needle followed by evaluation of the fertilization rate and pregnancy rate after intracytoplasmic sperm injection. MATERIALS AND METHODS: This is a prospective observational study performed in a private in vitro fertilization ...
Bartoov Benjamin - - 2002
The aim of the present prospective study was to determine whether subtle sperm morphological characteristics affect the outcome of intracytoplasmic sperm injection (ICSI), and if so, to identify those that are relevant. For this purpose, we developed a new method, the motile sperm organelle morphology examination (MSOME). The examination is ...
Yarali H - - 2002
Our objective was to assess the effects of intramural and subserous fibroids on intracytoplasmic sperm injection (ICSI) in a retrospective case-control study of 108 women with uterine fibroids and 324 controls. The fibroids were located and measured by transvaginal ultrasound performed just before the ICSI cycle and all patients had ...
Check M L - - 2002
PURPOSE: To determine if a viable pregnancy is possible after aspiration of sperm from the testes of a man several hours after his death. METHOD: Following cryopreservation of the aspirated sperm, in vitro fertilization (IVF)-embryo transfer (ET) with intracytoplasmic sperm injection (ICSI) was used. The sperm selected were either those ...
Check M L - - 2002
PURPOSE: To evaluate the clinical significance of the grey zone range (50-59%) of the hypo-osmotic swelling test (HOST) on sperm samples. METHODS: Clinical and viable pregnancy rates and implantantion rates following in vitro fertilization-embryo transfer (IVF-ET) were determined in couples where the male partner scored between 50-59% on the HOST. ...
Altay Bariş - - 2002
INTRODUCTION: Testicular sperm extraction (TESE) is well-defined procedure for surgical sperm retrieval in obstructive and non-obstructive azoospermia. This study was focused on the effectiveness of testicular sperm extraction and intracytoplasmic sperm injection (ICSI) for azoospermic men with different female age subgroups. MATERIALS AND METHODS: A total of 107 men with ...
Chan Peter T K - - 2002
Varicocele is an extremely common entity, present in 15% of the male population. Varicoceles are found in approximately 35% of men with primary infertility but 75%-81% of men with secondary infertility. Mounting evidence clearly demonstrates that varicocele causes progressive duration-dependent injury to the testis. Larger varicoceles appear to cause more ...
Check M L - - 2002
Several studies suggest that sperm with < or =4% normal morphology (NM) using strict criteria are subfertile and IVF with ICSI may be needed. However, not all studies agree on the clinical importance of the use of NM with strict criteria. One study of males with oligozoospermia found a lower ...
Belker A M - - 2001
Patients who inquire about microsurgical correction of vasal and epididymal obstructions should be informed about the postoperative rates of both return of sperm to the semen and pregnancy. They also should be informed about the possibility of a successful outcome, depending on their individual circumstances. The various preoperative, intraoperative, and ...
Kelleher S - - 2001
BACKGROUND: Sperm cryopreservation allows men with threatened fertility to preserve their progenitive potential, but there is little data on long-term outcomes of elective sperm cryostorage programmes. METHODS AND RESULTS: Over 22 years, 930 men sought semen cryostorage in a single academic hospital, of which 833 (90%) had spermatozoa cryostored. Among ...
Fukunaga N - - 2001
To compare fertilization and pregnancy rates of fresh and frozen-thawed testicular sperm injections (TESE-ICSI). Sperm collected from the testes of 28 azoospermic patients by an open testicular biopsy technique was used for initial ICSI or cryopreserved. Fresh-sperm ICSI treatment (28 cycles) resulted in a 58.1% fertilization rate and a 32.1% ...
Friedler S - - 2001
BACKGROUND: Recently, intracytoplasmic sperm injection (ICSI) of testicular spermatozoa retrieved surgically from patients with non-mosaic Klinefelter's syndrome resulted in several deliveries. The aim of this study was to evaluate the outcome of ICSI using fresh and cryopreserved-thawed testicular spermatozoa in these patients. METHODS AND RESULTS: Following informed consent regarding the ...
Pryor J L JL Department of Urologic Surgery, University of Minnesota, Minneapolis, Minnesota, - - 2001
To review pregnancy rates obtained with three protocols used during development of a successful therapy for infertility in couples in which the male partner had spinal cord injury. Retrospective chart review. Private infertility center. Eleven quadriplegic men and their spouses undergoing intrauterine insemination. Protocol 1: Intrauterine insemination was performed 24 ...
Kyono K - - 2001
Klinefelter's syndrome and spinal cord injury are major causes of male infertility. Intracytoplasmic sperm injection (ICSI) is a relatively new method of assisted reproduction. A testicular biopsy was obtained from a patient with the double complications of non-mosaic 47,XXY Klinefelter's syndrome and spinal cord damage, and motile spermatozoa were collected. ...
Sukcharoen N - - 2001
OBJECTIVES: To study the outcome of sperm retrieval and intracytoplasmic sperm injection (ICSI) from obstructive azoospermic men. METHOD: Overall, 50 sperm retrieval procedures were performed in 45 obstructive azoospermic men, followed by 57 ICSI procedures with fresh epididymal spermatozoa (n=40), fresh testicular spermatozoa (n=4) or frozen-thawed epididymal spermatozoa (n=13). RESULTS: ...
Manandhar G - - 2001
Equatorin is a sperm head equatorial protein, possibly involved in sperm-oocyte fusion (Toshimori et al., Biol Reprod 1998; 59:22-29). In the present work, we have shown that equatorin contained in the posterior acrosome is detectable only after spontaneous or induced acrosome reactions following fixation and permeabilization, but not in intact ...
Poulakis V - - 2001
OBJECTIVE: To report two births of a healthy male and a healthy female baby after use of testicular spermatozoa from two patients with nonmosaic Klinefelter's syndrome. DESIGN: Case report. SETTING: General academic hospital with IVF center and university institute of human genetics. PATIENT(S): Two couples with primary infertility in which ...
Belker A M - - 2001
OBJECTIVE: To report a live birth with IVF-ET and intracytoplasmic sperm injection (ICSI) using sperm retrieved from a moribund man being maintained on life support systems. DESIGN: Case report. SETTING: Nonprofit private teaching hospitals. PATIENT(S): A 27-year-old man who was decorticate after an accident. INTERVENTION(S): Epididymal sperm retrieval and sperm ...
Sun W M - - 2001
Animal studies demonstrate that nizatidine, an H2-receptor inhibitor, may enhance colonic activity independent of its effect on acid secretion. The effect of nizatidine on human colonic motility is unknown. We evaluated the potential prokinetic property of nizatidine in 12 healthy subjects (10 men and 2 women, age 21-46 years). Each ...
Kuczyński W - - 2001
BACKGROUND: The overall aim of this prospective, randomized study was to compare the reproductive potential of fresh and frozen-thawed ejaculated spermatozoa from oligoasthenoteratozoospermic patients in an intracytoplasmic sperm injection (ICSI) procedure. METHODS: All patients consenting to participate in this study had a sperm sample frozen prior to the start of ...
Thundathil J - - 2001
Frozen semen from a control bull (C: 89% morphologically normal sperm) and two bulls with acrosomal defects (K1: 92% flattened acrosomes; K2: 82% indented acrosomes) were used to investigate the fertilizing ability of bull sperm with flattened or indented acrosomes. In experiment 1, frozen-thawed sperm were evaluated for acrosomal integrity ...
El-Alamy M A - - 2001
Seasonal changes in photoperiod have a substantial effect on sexual behavior and reproduction in rams. Little information is available on sperm output from high libido versus average libido rams subjected to intensive semen collection while being exposed to controlled short versus long photoperiods. Six Finn and six Dorset rams were ...
Rhemrev J P - - 2001
BACKGROUND: The accuracy by which a number of newly described semen variables can predict either total fertilization failure (TFF) or pregnancy outcome in IVF, has not previously been investigated. The study aim was, therefore, to determine prospectively the predictive value of these variables. METHODS: The semen variables investigated were the ...
Simpson J L - - 2001
Intracytoplasmic sperm injection (ICSI) must be proved safe as well as efficacious. In this communication we first review available data following ICSI pregnancies concerning frequency of spontaneous abortion, malformations, and chromosomal abnormalities. In ICSI the spontaneous abortion rate is slightly increased, just as it is in in vitro fertilization (IVF) ...
Marmar J L - - 2001
OBJECTIVE: The current vasectomy methods, including the no scalpel vasectomy (NSV), have received considerable attention in recent years, because they are minimally invasive and utilize special instruments to expose the vas. However, at least 28 different methods for vas occlusion have been utilized with these procedures, and some postoperative complications ...
Oehninger S - - 2001
Male infertility is one of the most common, identifiable causes of human reproductive failure. Although considerable progress has been made toward understanding sperm physiology and the biology of gamete interaction, still more work is needed to achieve objectivity and standardization of some of the andrological diagnostic methods used in the ...
Van Waart J - - 2001
The aim of the study was to conduct a structured review of the literature published on the use of normal sperm morphology, as an indicator of male fertility potential in intrauterine insemination (IUI) programmes. Published literature in which normal sperm morphology was used to predict pregnancy outcome in IUI during ...
Söderlund B - - 2001
To investigate if including evaluation of acrosome index (AI) in the semen analysis of teratozoospermic samples could help to predict for which patients intracytoplasmic sperm injection (ICSI) is necessary. The fertilization rate, pregnancy rate, and percentage of good quality embryos were compared after performing conventional in vitro fertilization (IVF) and ...
Williams R S - - 2001
OBJECTIVE: This study was undertaken to assess the effect of multiple factors that influence the success rate and time to conception among couples undergoing donor sperm insemination. STUDY DESIGN: A retrospective analysis of 960 cycles of frozen donor sperm insemination was performed at the University of Florida. Cycle pregnancy rates ...
Levran D - - 2001
OBJECTIVE: To compare the outcome of IVF-intracytoplasmic sperm injection (ICSI) using testicular spermatozoa obtained on the day of ovum pick-up (OPU) or on the day before OPU. DESIGN: Retrospective study. SETTING: An IVF clinic in a university hospital. PATIENT(S): Forty-seven IVF-ICSI cycles using testicular spermatozoa in 28 couples with the ...
Wolf D P - - 2001
OBJECTIVE: To compare fecundity rates following intrauterine insemination (IUI) with donor sperm frozen conventionally versus an IUI-ready preparation. DESIGN: Both retrospective results and a prospective, randomized study where recipients were assigned to one of two sperm cryopreservation methods in each cycle of intrauterine insemination are reported. SETTING: University-based infertility practice, ...
Calogero A E - - 2001
BACKGROUND: Men with oligoasthenoteratozoospermia (OAT) frequently undergo intracytoplasmic sperm injection (ICSI) as a treatment for their infertility. However, there is an increased risk of transmitting chromosomal abnormalities to the offspring given that natural selection is bypassed by the use of this technique and patients have an increased rate of sperm ...
Bhattacharya S - - 2001
BACKGROUND: Intracytoplasmic sperm injection (ICSI) is a more invasive option than conventional in-vitro fertilisation (IVF), which can be successful even when semen characteristics are poor. Reports of higher fertilisation rates after ICSI suggest that this technique may be better than the conventional method for all couples seeking IVF. We undertook ...
Ma S - - 2001
OBJECTIVE: To compare the fertilization and prematurely condensed human sperm chromosomes (PCCs) rates between two intracytoplasmic sperm injection (ICSI) techniques. DESIGN: A retrospective study. SETTING: The data were obtained from the University of British Columbia in vitro fertilization (IVF) laboratory. PATIENT(S): ICSI cycles (n = 105) were performed for couples ...
Woodhouse C R - - 2001
PURPOSE: The effect of congenital genitourinary anomalies on fertility and the impact of current therapies are reviewed. MATERIALS AND METHODS: The literature of each of the 2 components was used to define the present status and to make proposals for future management. RESULTS: Infertility may be caused by gonadal failure ...
Menkveld R - - 2001
In this study, the semen analysis results of a fertile population were compared with those from a subfertile population, in order to establish normal cut-off values for the standard semen parameters with the aid of receiver operating characteristic (ROC) curve analysis. The fertile group comprised healthy males (n = 107) ...
Hammadeh M E - - 2001
AIM: To compare the recovery rate of morphologically normal and chromatin condensed spermatozoa from native semen samples using the SpermPrep filtration columns and Percoll gradient centrifugation and to determine the influence of the two processing techniques on fertilization and pregnancy rates in an IVF-ET program. METHODS: Sixteen semen samples obtained ...
Sukcharoen N - - 2001
The study was conducted to compare the outcome of intracytoplasmic sperm injection (ICSI) between fresh and frozen-thawed epididymal spermatozoa retrieved by percutaneous epididymal sperm aspiration (PESA) from obstructive azoospermic men. Overall, 53 PESA procedures were performed in 42 obstructive azoospermic men, followed by ICSI procedures with either fresh (n = ...
Kamal K M - - 2001
OBJECTIVE: To evaluate the natural history of infertile couples in whom the man underwent varicocelectomy. DESIGN: Retrospective study. SETTING: University infertility clinic. PATIENT(S): 159 infertile couples. INTERVENTION(S): Microsurgical varicocelectomy. MAIN OUTCOME MEASURE(S): Standard semen parameters and pregnancy rates (assisted and unassisted). RESULT(S): Postoperative sperm concentration and motility increased significantly compared ...
Lindheim S R - - 2001
This study was conducted to assess the outcomes of TESA in women undergoing oocyte donation. Descriptive reports from a university IVF practice were reviewed to evaluate the outcomes of women (n = 10) who underwent 12 cycles of ovum donation and required testicular sperm aspiration due to obstructive azoospermia (n ...
Montanaro Gauci M - - 2001
The aim of this study was to evaluate the impact of male and female factors on the pregnancy rate in an intrauterine insemination (IUI) programme. Data on 522 cycles were retrospectively studied. All patients 39 years or younger were included in the study where data were available on male and ...
Unal D - - 2001
BACKGROUND: The purpose of the study was to compare the effect of varicocelectomy with that of clomiphene citrate on seminal improvement and pregnancy rates in patients with subclinical varicocele. METHODS: A total of 42 infertile men with left subclinical varicocele were randomized to group I (21 patients, surgery) and group ...
Kumar V - - 2001
The prospective study was carried out to evaluate the success rates of combining a check tug and fascial interposition while performing a no-scalpel vasectomy. A total of 2150 male acceptors visiting the family welfare clinic of Lok Nayak Hospital, Delhi, from July 1992 to June 1995 and opting for a ...
Hammadeh M E - - 2001
The inability of sperm chromatin to decondense has been implicated in the failure of fertilization, This study was undertaken to identify the relationship between sperm chromatin decondensation in vitro after incubation with follicular fluid at various points in time and fertilization or pregnancy rates after intracytoplasmic sperm injection. Moreover, an ...
Xiao G - - 2001
The effects on semen and the function of accessory gonad of workers after short and long term exposure to benzene, toluene, and xylene were examined. The semen and blood of 24 married workers exposed to benzene, toluene, and xylene were collected. Routine sperm characteristic, acrosin activity, and Lactate dehydrogenase C4 ...
Obara H - - 2001
This study was performed to investigate if unexpectedly poor fertilization and in-vitro fertilization (IVF) outcome could be predicted using sperm morphology as diagnosed by the strict criteria. Sperm morphology was assessed in 137 IVF-ET cycles with at least three oocytes collected. The lowest amount of normal forms was 5% in ...
Steger K - - 2001
During spermiogenesis, histone-to-protamine exchange causes chromatin condensation. Spermatozoa from infertile men are known to exhibit an increased protamine-1 (PRM1) to protamine-2 (PRM2) protein ratio. Since patients undergoing testicular sperm extraction (TESE) followed by intracytoplasmic sperm injection (ICSI) reveal low fertilization rates, whether the outcome of ICSI could be related to ...
Van Voorhis B J BJ Department of Obstetrics & Gynecology, University of Iowa College of Medicine, Iowa, Iowa City 52242-1080, USA. - - 2001
To determine prognostic factors for achieving a pregnancy with intrauterine insemination (IUI) and IVF. To compare the effectiveness and cost-effectiveness of IUI and IVF based on semen analysis results. Retrospective cohort study. Academic university hospital-based infertility center. One thousand thirty-nine infertile couples undergoing 3,479 IUI cycles. Four hundred twenty-four infertile ...
Sharpe R M - - 2001
Development of a fetus into a phenotypic male depends, first, on testis formation and second, on hormone production by the fetal testis. Disorders of testicular hormone production or action can lead in severe cases to phenotypic abnormalities or can predispose towards impaired reproductive health. Evidence for deteriorating human male reproductive ...
Thundathil J - - 2001
The objective of this experiment was to determine the effect of proximal droplets on sperm-oocyte binding, zona penetration, fertilization, and the developmental competence of oocytes fertilized by sperm with proximal droplets (PD) in an in vitro fertilization (IVF) and culture system. Frozen semen from three bulls (PD1, PD2 and PD3) ...
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