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https://www.readbyqxmd.com/read/28742876/expression-of-uncharacterized-male-germ-cell-specific-genes-and-discovery-of-novel-sperm-tail-proteins-in-mice
#1
Jun Tae Kwon, Sera Ham, Suyeon Jeon, Youil Kim, Seungmin Oh, Chunghee Cho
The identification and characterization of germ cell-specific genes are essential if we hope to comprehensively understand the mechanisms of spermatogenesis and fertilization. Here, we searched the mouse UniGene databases and identified 13 novel genes as being putatively testis-specific or -predominant. Our in silico and in vitro analyses revealed that the expressions of these genes are testis- and germ cell-specific, and that they are regulated in a stage-specific manner during spermatogenesis. We generated antibodies against the proteins encoded by seven of the genes to facilitate their characterization in male germ cells...
2017: PloS One
https://www.readbyqxmd.com/read/28741210/effects-of-bpf-on-steroid-hormone-homeostasis-and-gene-expression-in-the-hypothalamic-pituitary-gonadal-axis-of-zebrafish
#2
Qian Yang, Xianhai Yang, Jining Liu, Wenjuan Ren, Yingwen Chen, Shubao Shen
Bisphenol F (BPF) has been frequently detected in various environmental compartments, and previous studies found that BPF exhibits similar estrogenic and anti-androgenic effects on the mammalian endocrine system to those of bisphenol A (BPA). However, the potential disrupting effects of BPF on aquatic organisms and the underling disrupting mechanisms have not been investigated. In this study, the potential disrupting mechanisms of BPF on the hypothalamic-pituitary-gonadal (HPG) axis and liver were probed by employing the OECD 21-day short-term fecundity assay in zebrafish...
July 25, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28741070/late-onset-x-linked-adrenal-hypoplasia-dax-1-nr0b1-two-new-adult-onset-cases-from-a-single-center
#3
Nikolaos Kyriakakis, Tolulope Shonibare, Julie Kyaw-Tun, Julie Lynch, Carlos F Lagos, John C Achermann, Robert D Murray
PURPOSE: DAX-1 (NR0B1) is an orphan nuclear receptor, which plays a critical role in development and regulation of the adrenal gland and hypothalamo-pituitary-gonadal axis. Mutations in NR0B1 lead to adrenal hypoplasia congenita (AHC), hypogonadotropic hypogonadism (HH) and azoospermia in men. Presentation is typically with adrenal insufficiency (AI) during infancy or childhood. To date only eight cases/kindreds are reported to have presented in adulthood. METHODS: We describe two new cases of men with DAX-1 mutations who presented in adulthood and who were diagnosed at a large University Hospital...
July 24, 2017: Pituitary
https://www.readbyqxmd.com/read/28740460/excess-of-radiation-burden-for-young-testicular-cancer-patients-using-automatic-exposure-control-and-contrast-agent-on-whole-body-computed-tomography-imaging
#4
Hannele Niiniviita, Jarmo Kulmala, Tuukka Pölönen, Heli Määttänen, Hannu Järvinen, Eeva Salminen
BACKGROUND: The aim of the study was to assess patient dose from whole-body computed tomography (CT) in association with patient size, automatic exposure control (AEC) and intravenous (IV) contrast agent. PATIENTS AND METHODS: Sixty-five testicular cancer patients (mean age 28 years) underwent altogether 279 whole-body CT scans from April 2000 to April 2011. The mean number of repeated examinations was 4.3. The GE LightSpeed 16 equipped with AEC and the Siemens Plus 4 CT scanners were used for imaging...
June 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/28740458/treatment-related-cardiovascular-toxicity-in-long-term-survivors-of-testicular-cancer
#5
Jasenka Gugic, Lorna Zadravec Zaletel, Irena Oblak
BACKGROUNDS: Testicular cancer is the most common malignancy in young men. Considering increasing incidence, exceptionally high cure rate, as well as long life expectancy, assessment of long term toxicity in testicular cancer survivors is of great importance. In the last decades a major effort has been made in order to reduce toxicity of treatment, while maintaining its high effectiveness. CONCLUSIONS: Actual knowledge on treatment toxicity is based on outdated treatment modalities...
June 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/28739499/primary-signet-ring-stromal-tumor-of-the-testis-a-study-of-13-cases-indicating-their-phenotypic-and-genotypic-analogy-to-pancreatic-solid-pseudopapillary-neoplasm
#6
Kvetoslava Michalova, Michael Michal, Dmitry V Kazakov, Monika Sedivcova, Ondrej Hes, Ladislav Hadravsky, Abbas Agaimy, Maria Tretiakova, Carlos Bacchi, Arndt Hartmann, Naoto Kuroda, Stela Bulimbasic, Marijana Coric, Tatjana Antic, Michal Michal
Primary signet ring stromal tumor of the testis (PSRSTT) is an extremely rare tumor described only twice in the literature. Pancreatic-analogue solid pseudopapillary neoplasm (SPN) of the testis is a recently reported entity with morphological overlap with PSRSTT. We reviewed our files to find all cases of PSRSTT in order to better characterize this entity. We studied 13 cases of PSRSTTs using histological, immunohistochemical (IHC) and molecular genetic methods and compared the results with pancreatic SPN...
July 21, 2017: Human Pathology
https://www.readbyqxmd.com/read/28739394/ameliorative-effect-of-%C3%AE-tocopherol-on-polychlorinated-biphenyl-pcbs-induced-testicular-sertoli-cell-dysfunction-in-f1-prepuberal-rats
#7
Sugantha Priya Elayapillai, Dhanaraj Teekaraman, Raja Singh Paulraj, Arunakaran Jagadeesan
The study was conducted to investigate the protective role of α-tocopherol against polychlorinated biphenyls (PCBs) induced effect in Sertoli cell function of F1 prepuberal rats. Dams were grouped into six; each group consists of six animals. Group 1-control treated with corn oil as vehicle, group II- 0.5mgPCBs/kg bw/day, group III- 0.5mgPCBs/kg bw/day with α-tocopherol (50mg α-tocopherol/kg bw/day), group IV- 1mgPCBs/kg bwt/day, group V- 1mgPCBs/kg bw/day with α-tocopherol (50mg α-tocopherol/kg bw/day) and group VI - α-tocopherol alone treated orally from postpartum day1-20...
July 21, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28739284/-%C3%A2-%C3%A2-%C3%A2-role-of-5%C3%AE-dihydrotestosterone-in-testicular-development-of-gilthead-seabream-following-finasteride-administration
#8
M García-García, M Sánchez-Hernández, M P García-Hernández, A García-Ayala, E Chaves-Pozo
In teleosts, spermatogenesis is regulated by pituitary gonadotropins and sex steroids. 5α-dihydrotestosterone (DHT), derived from testosterone (T) through the action of 5α-reductase, has recently been suggested to play a physiologically important role in some fish species. In this study, gilthead seabream, Sparus aurata L., males received an implant of 1μgT/g body mass (bm) or vehicle alone and, 7days later, 1mg finasteride (FIN, an inhibitor of 5α-reductase)/kg bm or vehicle. Serum levels of T, 11-ketotestosterone (11KT), DHT and 17β-estradiol (E2), and the mRNA levels of the main enzymes involved in their synthesis, were analysed...
July 21, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28739117/update-on-fertility-preservation-from-the-barcelona-international-society-for-fertility-preservation-eshre-asrm-2015-expert-meeting-indications-results-and-future-perspectives
#9
Francisca Martinez
STUDY QUESTION: What progress has been made in fertility preservation (FP) over the last decade? SUMMARY ANSWER: FP techniques have been widely adopted over the last decade and therefore the establishment of international registries on their short- and long-term outcomes is strongly recommended. WHAT IS KNOWN ALREADY: FP is a fundamental issue for both males and females whose future fertility may be compromised. Reproductive capacity may be seriously affected by age, different medical conditions and also by treatments, especially those with gonadal toxicity...
July 20, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28738802/histological-and-transcriptomic-effects-of-17%C3%AE-methyltestosterone-on-zebrafish-gonad-development
#10
Stephanie Ling Jie Lee, Julia A Horsfield, Michael A Black, Kim Rutherford, Amanda Fisher, Neil J Gemmell
BACKGROUND: Sex hormones play important roles in teleost ovarian and testicular development. In zebrafish, ovarian differentiation appears to be dictated by an oocyte-derived signal via Cyp19a1a aromatase-mediated estrogen production. Androgens and aromatase inhibitors can induce female-to-male sex reversal, however, the mechanisms underlying gonadal masculinisation are poorly understood. We used histological analyses together with RNA sequencing to characterise zebrafish gonadal transcriptomes and investigate the effects of 17α-methyltestosterone on gonadal differentiation...
July 24, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28737775/fertility-preservation-issues-in-pediatric-hematopoietic-stem-cell-transplantation-practical-approaches-from-the-consensus-of-the-pediatric-diseases-working-party-of-the-ebmt-and-the-international-bfm-study-group
#11
A Balduzzi, J-H Dalle, K Jahnukainen, M von Wolff, G Lucchini, M Ifversen, K T Macklon, C Poirot, T Diesch, A Jarisch, D Bresters, I Yaniv, B Gibson, A M Willasch, R Fadini, L Ferrari, A Lawitschka, A Ahler, N Sänger, S Corbacioglu, M Ansari, R Moffat, A Dalissier, E Beohou, P Sedlacek, A Lankester, C D De Heredia Rubio, K Vettenranta, J Wachowiak, A Yesilipek, E Trigoso, T Klingebiel, C Peters, P Bader
Fertility preservation is an urgent challenge in the transplant setting. A panel of transplanters and fertility specialists within the Pediatric Diseases Working Party of the European Society for Blood and Marrow Transplantation (EBMT) and the International BFM Study Group provides specific guidelines. Patients and families should be informed of possible gender- and age-specific cryopreservation strategies that should be tailored according to the underlying disease, clinical condition and previous exposure to chemotherapy...
July 24, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28737015/co-administration-of-caffeine-and-caffeic-acid-alters-some-key-enzymes-linked-with-reproductive-function-in-male-rats
#12
S F Akomolafe, A J Akinyemi, G Oboh, S I Oyeleye, O B Ajayi, A E Omonisi, F L Owolabi, D A Atoyebi, F O Ige, V A Atoki
This study assessed the effects of caffeine combined with caffeic acid on some biomarkers of male reproductive function using normal albino Wistar rats. Rats were divided into four groups (n = 6) and treated for seven successive days; group 1 represents the control rats; group 2 rats were treated with 50 mg/kg body weight (BW) of caffeine only; group 3 rats were treated with 50 mg/kg BW of caffeic acid, while the rats in group 4 were cotreated with an equal combination of caffeine and caffeic acid. The results revealed significant increase in reproductive hormone, testicular and epididymal nitric oxide levels of the rats...
July 23, 2017: Andrologia
https://www.readbyqxmd.com/read/28735684/micro-denervation-of-the-spermatic-cord-for-post-vasectomy-pain-management
#13
REVIEW
Wei Phin Tan, Laurence A Levine
INTRODUCTION: Post-vasectomy pain syndrome (PVPS) is a challenging problem for the practicing urologist because of its unclear pathophysiology and no clearly established protocol for evaluation or treatment. PVPS is defined as at least 3 months of chronic or intermittent scrotal content pain after a vasectomy procedure once other etiologies for the pain have been ruled out. AIM: To systematically review the current literature on the effectiveness of micro-denervation of the spermatic cord (MDSC) for PVPS...
July 20, 2017: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/28734114/effects-of-pomegranate-peel-extract-on-histopathology-testosterone-levels-and-sperm-of-testicular-torsion-detorsion-induced-in-adult-wistar-rats
#14
Mandana Beigi Boroujeni, Said Saied Shahrokhi, Mahdi Birjandi, Abolfazl Abbaszadeh, Fatemeh Beyranvand, Sakineh Hamoleh, Zohreh Zandbaf, Mohammadreza Gholami
Background In the present study, effects of pomegranate peel extract have been evaluated on decreasing the damage induced by testis torsion. Methods In this study, 30 adult Wistar rats were randomly divided into three groups of control, experimental (1) and experimental (2). CONTROL: no ischemia, received vehicle alone, exposed to sham operation. Experimental (1): Received the vehicle alone during ischemia followed by 60 days' reperfusion. Experimental (2): After performing ischemia reperfusion, 500 mg/kg of pomegranate peel extract has been used for 60 days...
July 22, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/28731893/validity-of-administrative-data-in-identifying-cancer-related-events-in-adolescents-and-young-adults-a-population-based-study-using-the-impact-cohort
#15
Sumit Gupta, Paul C Nathan, Nancy N Baxter, Cindy Lau, Corinne Daly, Jason D Pole
BACKGROUND: Despite the importance of estimating population level cancer outcomes, most registries do not collect critical events such as relapse. Attempts to use health administrative data to identify these events have focused on older adults and have been mostly unsuccessful. We developed and tested administrative data-based algorithms in a population-based cohort of adolescents and young adults with cancer. METHODS: We identified all Ontario adolescents and young adults 15-21 years old diagnosed with leukemia, lymphoma, sarcoma, or testicular cancer between 1992-2012...
July 20, 2017: Medical Care
https://www.readbyqxmd.com/read/28731686/pyrethroid-insecticide-cypermethrin-accelerates-pubertal-onset-in-male-mice-via-disrupting-hypothalamic-pituitary-gonadal-axis
#16
Xiaoqing Ye, Feixue Li, Jianyun Zhang, Huihui Ma, Dapeng Ji, Xin Huang, Thomas E Curry, Weiping Liu, Jing Liu
Pyrethroids, a class of insecticides that are widely used worldwide, have been identified as endocrine-disrupting chemicals (EDCs). Our recent epidemiological study reported on an association of increased pyrethroids exposure with elevated gonadotropins levels and earlier pubertal development in Chinese boys. In this study, we further investigated the effects of cypermethrin (CP), one of the most ubiquitous pyrethroid insecticides, on hypothalamic-pituitary-gonadal (HPG) axis and pubertal onset in male animal models...
July 21, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28731667/-henoch-schonlein-purpura-involving-the-penis-a-case-report
#17
Borja Croche Santander, Elena Campos, Adela Sánchez, Laura Marcos, Isabel Díaz, Cristóbal Toro
Schonlein-Henoch purpura accounts for the majority of cases of systemic vasculitis in children. Classical presentation is characterized by palpable purpura, glomerulonephritis, arthralgias and abdominal pain. Although genitourinary manifestations, in form of testicular and scrotal involvement, have been widely described, penile involvement remains an extremely rare complication. We report a case of a 6-year-old boy who presented with purpuric rash on the glans, prepuce and penile shaft, with painful edema in the penile region...
August 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28731265/application-of-dead-end-knockout-zebrafish-as-recipients-of-germ-cell-transplantation
#18
Qian Li, Wataru Fujii, Kunihiko Naito, Goro Yoshizaki
Germ cell transplantation is a promising technology for the propagation of endangered or valuable fishes. In this technique, sterile male and female recipient fish are injected with donor germ cells so they can produce viable gametes derived from the donor cells. The dead end (dnd) gene is involved in the migration of primordial germ cells; therefore, dnd-knockout zebrafish are expected to be germ-cell-free, making them suitable recipients for germ cell transplantation. dnd mutants were produced by microinjecting 2 nl of 10 ng/μl cRNAs encoding zinc finger nucleases against dnd into the blastodisc of zebrafish embryos before the cell cleavage stage...
July 21, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28730645/effect-of-metformin-on-germ-cell-specific-apoptosis-oxidative-stress-and-epididymal-sperm-quality-after-testicular-torsion-detorsion-in-rats
#19
M Ghasemnejad-Berenji, M Ghazi-Khansari, I Yazdani, M Nobakht, A Abdollahi, H Ghasemnejad-Berenji, J Mohajer Ansari, S Pashapour, A R Dehpour
The study was designed to evaluate the effects of metformin on apoptosis and epididymal sperm quality in a rat testicular ischaemia/reperfusion (I/R) injury model. A total of 72 male rats were divided into four groups (n = 18 for each group): group 1 (sham-operated group), group 2 (metformin group), group 3 (torsion/detorsion [T/D] + saline) and group 4 (T/D + 300 mg kg(-1) metformin). Testicular torsion was achieved by rotating the right testis 720° in a clockwise direction for 1 hr. Tissue malondialdehyde (MDA) level and caspase-3 activity increased and the activities of catalase, superoxide dismutase and glutathione peroxidase decreased in comparison with sham-operated group 4 hr after detorsion (p < ...
July 21, 2017: Andrologia
https://www.readbyqxmd.com/read/28729185/-testicular-tumours-in-children-indications-for-testis-sparing-surgery
#20
Martha Isabel Romo Muñoz, Vanesa Núñez Cerezo, Mariela Dore Reyes, Alejandra Vilanova Sánchez, Pilar González-Peramato, Pedro López Pereira, María José Martínez Urrutia
INTRODUCTION AND OBJECTIVES: Although standard surgical treatment of a testicular tumour is orchiectomy, use can be made of testis-sparing surgery in selected cases, based on tumour markers, tumour size, and histopathological findings. Our objective is to become acquainted with the indications of testis-sparing surgery as a treatment for the incidental finding of a palpable and non-palpable testicular mass. MATERIAL AND METHODS: A retrospective study was conducted on 22 patients younger than 18 years diagnosed with a testicular tumour between 2000 and 2014...
July 17, 2017: Anales de Pediatría: Publicación Oficial de la Asociación Española de Pediatría (A.E.P.)
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