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HLA-DR antigen and HLA-DRB1 genotyping with nonobstructive azoospermia in Japan
Testis sperm HLA class II antigen
2009/2/18
We previously reported that the HLA-A33, -B13, and -B44 antigens, which are major histocompatibility complex class I molecules, are involved in the susceptibility of nonobstructive azoospermia in ...
Morphology of testicular spermatozoa obtained by testicular sperm extraction in obstructive and nonobstructive azoospermic men and its relation to fertilization success in the in vitro fertilization-intracytoplasmic sperm injection system
Morphology testicular spermatozoa testicular sperm extraction azoospermic men
2008/12/26
The aim of the present study was to evaluate the morphology of testicular spermatozoa by 3 different determinants. Sperm cells were obtained and their morphology was evaluated from 27 testicular spe...
Comparison of Efficacy of Two Techniques for Testicular Sperm Retrieval in Nonobstructive Azoospermia：Multifocal Testicular Sperm Extraction Versus Multifocal Testicular Sperm Aspiration
Male infertility Sertoli cell only arrest of spermatogenesis hypospermatogenesis motility
2008/12/23
To compare the efficacy of 2 sperm-retrieval procedures, testicular sperm extraction (TESE) and testicular sperm aspiration (TESA), during the same procedure using the same subjects as their own con...
Clomiphene Administration for Cases of Nonobstructive Azoospermia：A Multicenter Study
Hypospermatogenesis maturation arrest ICSI TESE
2008/12/23
Clomiphene citrate is a well-established agent that has been empirically used in cases of idiopathic oligospermia. Clomiphene increases endogenous gonadotropin-releasing hormone secretion from the h...
Severe Hypospermatogenesis in Cases of Nonobstructive Azoospermia：Should We Use Fresh or Frozen Testicular Spermatozoa?
Testicular sperm extraction fertilization implantation IVF-ICSI
2008/12/23
The aim of this comparative clinical study was to examine whether the fertilizing potential of frozen-thawed testicular sperm in the most severe cases of hypospermatogenesis is reduced compared with...
The Utility of Optical Loupe Magnification for Testis Sperm Extraction in Men With Nonobstructive Azoospermia
Male infertility intracytoplasmic sperm injection
2008/12/23
The testis of patients with nonobstructive azoospermia (NOA) harbors sperm in approximately 30% to 60% of cases. Use of an operating microscope has been shown to result in better sperm retrieval rat...
Diagnosis of Nonobstructive Azoospermia：The Laboratory Perspective
Nonobstructive Azoospermia Laboratory Perspective
2008/12/19
The definition of male infertility was open for interpretation during the last decade since the introduction of intracytoplasmic sperm injection (ICSI) as an acceptable and routine technique in in vit...
Analysis of Aneuploidy in Spermatozoa From Testicular Biopsies From Men With Nonobstructive Azoospermia
Sperm chromosome analysis male infertility fluorescence in situ hybridization
2008/12/18
Testicular sperm biopsy combined with intracytoplasmic sperm injection (ICSI) allows men with azoospermia the possibility of fathering a child. However, little information exists on the risk of chro...