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Azoospermia

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https://www.readbyqxmd.com/read/28213128/quantitative-proteomic-analysis-of-human-testis-reveals-system-wide-molecular-and-cellular-pathways-associated-with-non-obstructive-azoospermia
#1
Mehdi Alikhani, Mehdi Mirzaei, Marjan Sabbaghian, Pouria Parsamatin, Razieh Karamzadeh, Samane Adib, Niloofar Sodeifi, Mohammad Ali Sadighi Gilani, Masoud Zabet-Moghaddam, Lindsay Parker, Yunqi Wo, Vivek Gupta, Paul A Haynes, Hamid Gourabi, Hossein Baharvand, Ghasem Hosseini Salekdeh
: Male infertility accounts for half of the infertility problems experienced by couples. Azoospermia, having no measurable level of sperm in seminal fluid, is one of the known conditions resulting in male infertility. In order to elucidate the complex molecular mechanisms causing male azoospermia, label-free quantitative shotgun proteomics was carried out on testicular tissue specimens from patients with obstructive azoospermia and non-obstructive azoospermia, including maturation arrest (MA) and Sertoli cell only syndrome (SCOS)...
February 14, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28208955/high-serum-estradiol-and-heavy-metals-responsible-for-human-spermiation-defect-a-pilot-study
#2
Manish Jain, Amanpreet Kaur Kalsi, Amita Srivastava, Yogendra Kumar Gupta, Ashutosh Halder
INTRODUCTION: Spermiation is a process of releasing sperm into the lumen of seminiferous tubules. Failure in releasing sperm into the lumen is designated as spermiation defect. Spermiation defect cases present as oligo-azoospermia or azoospermia despite normal gonadotropins and testicular histology/cytology. Human spermiation defect never got attention to investigate infertility practice. Most of the information on spermiation defect, so far is from animal experiments. We assume some cases of non-obstructive azoospermia with normal gonadotropins and testicular histology/cytology could be due to spermiation defect...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28206990/a-familial-study-of-azoospermic-men-identifies-three-novel-causative-mutations-in-three-new-human-azoospermia-genes
#3
Moran Gershoni, Ron Hauser, Leah Yogev, Ofer Lehavi, Foad Azem, Haim Yavetz, Shmuel Pietrokovski, Sandra E Kleiman
PURPOSE: Up to 1% of all men experience azoospermia, a condition of complete absence of sperm in the semen. The mechanisms and genes involved in spermatogenesis are mainly studied in model organisms, and their relevance to humans is unclear because human genetic studies are very scarce. Our objective was to uncover novel human mutations and genes causing azoospermia due to testicular meiotic maturation arrest. METHODS: Affected and unaffected siblings from three families were subjected to whole-exome or whole-genome sequencing, followed by comprehensive bioinformatics analyses to identify mutations suspected to cause azoospermia...
February 16, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28190795/progress-in-understanding-the-molecular-functions-of-ddx3y-dby-in-male-germ-cell-development-and-maintenance
#4
Alexei A Kotov, Oxana M Olenkina, Baira K Godneeva, Vladimir E Adashev, Ludmila V Olenina
Human DDX3 paralogs are housed on the X chromosome (DDX3X) as well as in the non- recombining region Yq11 of the Y-chromosome (DDX3Y or DBY). A gene encoding RNA helicase DDX3Y is located in the AZoospermia Factor a (AZFa) region of the Y-chromosome and expressed only in male germ cells. Deletions encompassing the DDX3Y gene lead to azoospermia and cause Sertoli Cell-Only Syndrome (SCOS) in humans. SCOS is characterized by a complete germ cell lack with preservation of somatic Sertoli cells. This review summarizes current advances in the study of DDX3Y functions in maintenance and development of early male germ cells...
February 12, 2017: Bioscience Trends
https://www.readbyqxmd.com/read/28187504/extreme-spermatogenesis-failure-andrological-phenotype-and-intracytoplasmic-sperm-injection-outcomes
#5
P Plouvier, A-L Barbotin, F Boitrelle, D Dewailly, V Mitchell, J-M Rigot, V Lefebvre-Khalil, G Robin
Patients with very low sperm count through direct sperm examination can exhibit extreme oligozoospermia or cryptozoospermia (after centrifugation). The management of these patients is a real challenge for both clinicians and biologists. In this retrospective and comparative cohort study, we compared the andrological phenotype of patients with extreme alterations of spermatogenesis and assessed whether the origin of spermatozoa (testicular or ejaculate) had any influence on intracytoplasmic sperm injection (ICSI) outcomes...
February 10, 2017: Andrology
https://www.readbyqxmd.com/read/28135332/correction-discrimination-of-deletion-and-duplication-subtypes-of-the-deleted-in-azoospermia-gene-family-in-the-context-of-frequent-interloci-gene-conversion
#6
(no author information available yet)
[This corrects the article DOI: 10.1371/journal.pone.0163936.].
2017: PloS One
https://www.readbyqxmd.com/read/28125052/serum-metabolomic-profiling-identifies-characterization-of-non-obstructive-azoospermic-men
#7
Zhe Zhang, Yingwei Zhang, Changjie Liu, Mingming Zhao, Yuzhuo Yang, Han Wu, Hongliang Zhang, Haocheng Lin, Lemin Zheng, Hui Jiang
Male infertility is considered a common health problem, and non-obstructive azoospermia with unclear pathogenesis is one of the most challenging tasks for clinicians. The objective of this study was to investigate the differential serum metabolic pattern in non-obstructive azoospermic men and to determine potential biomarkers related to spermatogenic dysfunction. Serum samples from patients with non-obstructive azoospermia (n = 22) and healthy controls (n = 31) were examined using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS)...
January 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28124847/non-obstructive-azoospermia-and-the-impact-of-microtese
#8
EDITORIAL
T Dineen, J Waterstone, I Cullen
No abstract text is available yet for this article.
September 9, 2016: Irish Medical Journal
https://www.readbyqxmd.com/read/28120211/molecular-effect-of-human-umbilical-cord-blood-cd34-positive-and-cd34-negative-stem-cells-and-their-conjugate-in-azoospermic-mice
#9
Somia H Abd Allah, Heba F Pasha, Abeer A Abdelrahman, Nehad F Mazen
Currently, azoospermia is one of the most common diseases of male infertility. Stem cell research is the new hope for novel therapy with a higher degree of safety and lower cost. This study aimed to investigate the effect of umbilical cord blood-derived stem cells (" and mesenchymal "UCB-MSCs") and mono-cell layer implanted into the induced azoospermic mice testis. Stem cells were isolated from umbilical cord blood and CD34+ve cells were separated from negative one by Mini MACs column. At 5th week after single injection of busulfan, stained mesenchymal (CD34-ve), hematopoietic stem cells (CD34+ve) and their conjugate (mono-cell layer) were injected locally into testis...
January 24, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28109031/undifferentiated-embryonic-cell-transcription-factor-1-utf1-and-deleted-in-azoospermia-like-dazl-expression-in-the-testes-of-donkeys
#10
Y S Lee, H J Jung, M J Yoon
Putative markers for each specific germ cell stage can be a useful tool to study the fate and functions of these cells. Undifferentiated embryonic cell transcription factor 1 (UTF1) is a putative marker for undifferentiated spermatogonia in humans, rats and horses. The deleted in azoospermia-like (DAZL) protein is also expressed by differentiated spermatogonia and primary spermatocytes in several species. However, whether the expression patterns of these molecular markers are identical and applicable to donkeys remains to be elucidated...
January 20, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28104696/systematic-characterization-of-human-testis-specific-actin-capping-protein-%C3%AE-3-as-a-possible-biomarker-for-male-infertility
#11
T Soda, Y Miyagawa, N Ueda, K Takezawa, H Okuda, S Fukuhara, K Fujita, H Kiuchi, M Uemura, Y Okamoto, A Tsujimura, H Tanaka, N Nonomura
STUDY QUESTION: Is actin capping protein (CP) β3 involved in human spermatogenesis and male infertility? SUMMARY ANSWER: Human CPβ3 (hCPβ3) is expressed in testis, changes its localization dynamically during spermatogenesis, and has some association with male infertility. WHAT IS KNOWN ALREADY: The testis-specific α subunit of CP (CPα3) was previously identified in human, and mutations in the cpα3 gene in mouse were shown to induce malformation of the sperm head and male infertility...
January 18, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28102433/advanced-forensic-validation-for-human-spermatozoa-identification-using-sperm-hy-liter%C3%A2-express-with-quantitative-image-analysis
#12
Ayari Takamura, Ken Watanabe, Tomoko Akutsu
Identification of human semen is indispensable for the investigation of sexual assaults. Fluorescence staining methods using commercial kits, such as the series of SPERM HY-LITER™ kits, have been useful to detect human sperm via strong fluorescence. These kits have been examined from various forensic aspects. However, because of a lack of evaluation methods, these studies did not provide objective, or quantitative, descriptions of the results nor clear criteria for the decisions reached. In addition, the variety of validations was considerably limited...
January 19, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28100869/gonadotoropin-actions-on-spermatogenesis-and-hormonal-therapies-for-spermatogenic-disorders-review
#13
Koji Shiraishi, Hideyasu Matsuyama
Microdissection testicular sperm extraction and intracytoplasmic sperm injection have made it possible for men with non-obstructive azoospermia (NOA) to conceive a child. A majority of men cannot produce sperm because spermatogenesis per se is believed to be "irreversibly" disturbed. For these men, it and has been thought that any hormonal therapy will be ineffective. Further understandings of endocrinological regulation of spermatogenesis are needed and LH or FSH receptor knock out (KO) mice have revealed the roles of gonadotropin separately...
January 19, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28099840/testis-specific-histone-variant-h3t-gene-is-essential-for-entry-into-spermatogenesis
#14
Jun Ueda, Akihito Harada, Takashi Urahama, Shinichi Machida, Kazumitsu Maehara, Masashi Hada, Yoshinori Makino, Jumpei Nogami, Naoki Horikoshi, Akihisa Osakabe, Hiroyuki Taguchi, Hiroki Tanaka, Hiroaki Tachiwana, Tatsuma Yao, Minami Yamada, Takashi Iwamoto, Ayako Isotani, Masahito Ikawa, Taro Tachibana, Yuki Okada, Hiroshi Kimura, Yasuyuki Ohkawa, Hitoshi Kurumizaka, Kazuo Yamagata
Cellular differentiation is associated with dynamic chromatin remodeling in establishing a cell-type-specific epigenomic landscape. Here, we find that mouse testis-specific and replication-dependent histone H3 variant H3t is essential for very early stages of spermatogenesis. H3t gene deficiency leads to azoospermia because of the loss of haploid germ cells. When differentiating spermatogonia emerge in normal spermatogenesis, H3t appears and replaces the canonical H3 proteins. Structural and biochemical analyses reveal that H3t-containing nucleosomes are more flexible than the canonical nucleosomes...
January 17, 2017: Cell Reports
https://www.readbyqxmd.com/read/28090461/effects-of-maternal-age-on-embryo-quality-and-pregnancy-outcomes-using-testicular-sperm-with-intracytoplasmic-sperm-injection
#15
Hye Won Choi, Yong-Seog Park, Sun-Hee Lee, Chun Kyu Lim, Ju Tae Seo, Kwang Moon Yang
OBJECTIVE: The aim of this study was to evaluate the influence of maternal age on fertilization, embryo quality, and clinical pregnancy in patients undergoing intracytoplasmic sperm injection (ICSI) using testicular sperm from partners with azoospermia. METHODS: A total of 416 ICSI cycles using testicular spermatozoa from partners with obstructive azoospermia (OA, n=301) and non-obstructive azoospermia (NOA, n=115) were analyzed. Female patients were divided into the following age groups: 27 to 31 years, 32 to 36 years, and 37 to 41 years...
December 2016: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28087298/the-utility-of-sex-hormone-binding-globulin-in-hypogonadism-and-infertile-males
#16
Joshua Ring, Charles Welliver, Mike Parenteau, Stephen Markwell, Robert E Brannigan, Tobias S Köhler
PURPOSE: We sought to determine the role of sex hormone-binding globulin in patients with male infertility. MATERIALS AND METHODS: We retrospectively reviewed the records of 168 males seen at a fertility clinic from 2012 to 2014, to investigate the accuracy of total testosterone in the biochemical diagnosis of hypogonadism using calculated bioavailable testosterone as the reference value. We used multivariable analysis to assess sex hormone-binding globulin as an independent predictor of infertility...
January 10, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28076602/incidence-of-y-chromosome-microdeletions-in-children-whose-fathers-underwent-vasectomy-reversal-or-in-vitro-fertilization-with-epididymal-sperm-aspiration-a-case-control-study
#17
Milton Ghirelli-Filho, Patricia Leme de Marchi, Fernanda Abani Mafra, Viviane Cavalcanti, Denise Maria Christofolini, Caio Parente Barbosa, Bianca Bianco, Sidney Glina
Objective: To evaluate the incidence of Y-chromosome microdeletions in individuals born from vasectomized fathers who underwent vasectomy reversal or in vitro fertilization with sperm retrieval by epididymal aspiration (percutaneous epididymal sperm aspiration). Methods: A case-control study comprising male children of couples in which the man had been previously vasectomized and chose vasectomy reversal (n=31) or in vitro fertilization with sperm retrieval by percutaneous epididymal sperm aspiration (n=30) to conceive new children, and a Control Group of male children of fertile men who had programmed vasectomies (n=60)...
October 2016: Einstein
https://www.readbyqxmd.com/read/28073207/intraoperative-ultrasound-guided-enucleation-of-testicular-nodule
#18
Riccardo Boschian, Giovanni Liguori, Stefano Bucci, Michele Bertolotto, Carlo Trombetta
OBJECTIVE: We report a case of enucleation of a non-palpable right testicular lesion found incidentally at testicular ultrasonography during investigations in a patient with azoospermia. MATERIALS AND METHODS: In 2011 bilateral hypoechoic nonpalpable testicular lesions (5 mm and 3 mm to the right, 3 mm to the left) were found in a 28 years old patient, during diagnostic investigations for azoospermia. In March 2016, ultrasonography showed that the diameter of the right major nodule had grown to 12 mm, characterized by increased vascularization and increased texture...
December 30, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28073201/azoospermic-patient-s-treatment-an-experience-of-a-pma-hospital-unit-and-role-of-ultrasonography
#19
Paolo Panella, Pietro Pepe, Placido Borzì, Maria Elena Vento, Michele Pennisi, Paolo Scollo
INTRODUCTION: Azoospermia causes about 10% of male infertility and the best therapeutic option is the retrieval of sperm from testis or epididymis. MATERIAL AND METHODS: From Juanary 2008 to June 2016, 92 men (median 36 years; range: 25-54 years) were submitted in 47 cases to TESE (testicular sperm extraction) and in 45 cases to PESA (percutaneous epididymal sperm aspiration) for secretory and obstructive azoospermia, respectively; moreover, all the patients previously underwent color Doppler ultrasound of the testis and transrectal ultrasound of the prostate...
December 30, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28070708/delayed-treatment-of-undescended-testes-may-promote-hypogonadism-and-infertility
#20
Julia Rohayem, Alessandra Luberto, Eberhard Nieschlag, Michael Zitzmann, Sabine Kliesch
CONTEXT: Undescended testes at birth may be caused by testosterone deficiency during fetal development. It is unclear whether the process of failed descent contributes to permanent endocrine impairment. OBJECTIVES: To evaluate the impact of age at treatment of undescended testes on endocrine and spermatogenic testicular function in middle-aged men. PATIENTS AND METHODS: Reproductive hormone and semen data of 357 men with previously undescended testes were evaluated with respect to age at correction of testicular position and compared to those of 709 controls with eutopic testes at birth and normozoospermia...
January 9, 2017: Endocrine
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