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Ectopic testis

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https://www.readbyqxmd.com/read/28502657/rpl10l-is-required-for-male-meiotic-division-by-compensating-for-rpl10-during-meiotic-sex-chromosome-inactivation-in-mice
#1
Long Jiang, Tao Li, Xingxia Zhang, Beibei Zhang, Changping Yu, Yang Li, Suixing Fan, Xiaohua Jiang, Teka Khan, Qiaomei Hao, Peng Xu, Daita Nadano, Mahmoud Huleihel, Eitan Lunenfeld, P Jeremy Wang, Yuanwei Zhang, Qinghua Shi
The mammalian sex chromosomes have undergone profound changes during their evolution from an ancestral pair of autosomes [1-4]. Specifically, the X chromosome has acquired a paradoxical sex-biased function by redistributing gene contents [5, 6] and has generated a disproportionately high number of retrogenes that are located on autosomes and exhibit male-biased expression patterns [6]. Several selection-based models have been proposed to explain this phenomenon, including a model of sexual antagonism driving X inactivation (SAXI) [6-8] and a compensatory mechanism based on meiotic sex chromosome inactivation (MSCI) [6, 8-11]...
May 9, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28498828/kdm1a-lsd1-regulates-the-differentiation-and-maintenance-of-spermatogonia-in-mice
#2
Dexter A Myrick, Michael A Christopher, Alyssa M Scott, Ashley K Simon, Paul G Donlin-Asp, William G Kelly, David J Katz
The proper regulation of spermatogenesis is crucial to ensure the continued production of sperm and fertility. Here, we investigated the function of the H3K4me2 demethylase KDM1A/LSD1 during spermatogenesis in developing and adult mice. Conditional deletion of Kdm1a in the testis just prior to birth leads to fewer spermatogonia and germ cell loss before 3 weeks of age. These results demonstrate that KDM1A is required for spermatogonial differentiation, as well as germ cell survival, in the developing testis...
2017: PloS One
https://www.readbyqxmd.com/read/28275524/high-single-scrotal-incision-orchidopexy-as-the-standard-technique-in-infants-aged-6-24%C3%A2-months
#3
Ahmed Mohey, Tarek M Gharib, Rabea G Omar, Ahmed Sebaey, Basheer N Elmohamady, Wael Kandeel
OBJECTIVE: To prospectively investigate the effectiveness of high single scrotal-incision orchidopexy (HSSIO) for palpable undescended testis (PUDT) in infants aged 6-24 months. PATIENTS AND METHODS: From March 2012 to July 2014, 46 age range-restricted (6-24 months) infants with 57 PUDT underwent HSSIO after obtaining written consent from their parents. The exclusion criteria were ectopic, retractile testes and recurrent cases. All infants were examined before surgery in the outpatient department and after anaesthesia induction immediately before surgery...
March 2017: Arab Journal of Urology
https://www.readbyqxmd.com/read/28171846/an-inguinal-hernia-with-cryptorchidism-with-a-leydig-cell-tumor-in-an-elderly-man-a-case-report
#4
Toru Zuiki, Jun Ohki, Toshihide Komatsubara, Alan Kawarai Lefor, Yuzo Miyahara, Masanori Ochi, Norio Hirota
INTRODUCTION: Cryptorchidism is common in children but is rare in the elderly. It often presents with a constellation of signs and symptoms similar to routine inguinal hernias. We present the case of an elderly man with cryptorchidism containing a Leydig cell tumor and provide clinical insights. PRESENTATION OF CASE: An-84-year old man was admitted with an incarcerated right lower quadrant hernia. Both testes were absent on palpation of the scrotum. After reduction of the hernia, computed tomography scan revealed a round lesion in the hernia sac, which was suspected to be the ectopic testis...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28160442/xenografting-of-isolated-equine-equus-caballus-testis-cells-results-in-de-novo-morphogenesis-of-seminiferous-tubules-but-not-spermatogenesis
#5
W Zeng, W Alpaugh, D Stefanovski, K Schlingmann, I Dobrinski, R M Turner
The study of spermatogenesis in the horse is challenging because of the absence of an in vitro system that is capable of reproducing efficient spermatogenesis and because of the difficulties and costs associated with performing well-controlled studies in vivo. In an attempt to develop novel methods for the study of equine spermatogenesis, we tested whether cells from enzymatically digested pre-pubertal equine testicular tissue were capable of de novo tissue formation and spermatogenesis following xenografting under the back skin of immunocompromised mice...
March 2017: Andrology
https://www.readbyqxmd.com/read/28152494/transverse-testicular-ectopia-with-scrotal-hypospadias-but-without-inguinal-hernia-case-report-of-a-rare-association
#6
Pradeep Kajal, Kamal Nain Rattan, Namita Bhutani, Vijender Sangwan
Transverse testicular ectopia is an extremely rare anomaly, in which both the testis migrate towards the same hemiscrotum through the same inguinal canal. It is usually associated with other abnormalities such as persistent Mullerian duct syndrome, true hermaphroditism, inguinal hernia, pseudohermaphroditism, and scrotal anomalies; the association with inguinal hernia being the commonest. We, here, report a case of transverse testicular ectopia in a 12 years old boy having the ectopic testis in contralateral hemiscrotum without any inguinal hernia but having scrotal hypospadias with severe chordee...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28094762/persistent-mullerian-duct-syndrome-with-transverse-testicular-ectopia-a-novel-amh-receptor-mutation
#7
Özlem Korkmaz, Samim Özen, Nurhan Özcan, Petek Bayındır, Sait Şen, Hüseyin Onay, Damla Gökşen, Ali Avanoğlu, Ferda Özkınay, Şükran Darcan
Persistent Mullerian duct syndrome is the result of either anti-Mullerian hormone (AMH) deficiency or AMH receptor resistance. A long tubular structure (testis/?) was palpated during the physical examination of a 13-month-old male patient who admitted because of bilateral undescended testes. Structures suggestive of ovaries, a uterus and fallopian tubes were observed during laparoscopic examination of the ectopic testis. AMHR2 gene sequence analysis performed wıth a preliminary diagnosis of AMH receptor resistance revealed a previously unreported homozygous c...
January 17, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/28053928/synaptonemal-complex-protein-3-transcript-analysis-in-breast-cancer
#8
Maryam Beigom Mobasheri, Reza Shirkoohi, Mohammad Hossein Modarressi
BACKGROUND: Breast cancer is the most frequent cancer in women. Cancer/Testis antigens are immunogenic proteins ectopically expressed in human neoplasms. Synaptonemal complex protein 3 (SYCP3) belongs to cancer/testis genes family involved in meiotic events and spermatogenesis. The aim of this study was to express analysis of SYCP3 in breast cancer and validate it as a breast cancer biomarker. METHODS: Expression of SYCP3 transcripts in 47 breast tumors, 6 breast cancer cell lines (MCF7, SKBR3, T47D, BT474, MDA-MB-231 and MDA-MB 468), 5 normal breast and 2 testis tissues was studied by Real Time RT-PCR reaction...
December 2016: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/28024737/testicular-ectopia-why-does-it-happen-and-what-do-we-do
#9
Vishal V Punwani, Jeremy S Y Wong, Christopher Y H Lai, Jessalynn C Y Chia, John M Hutson
BACKGROUND/AIM: Testicular ectopia is rare, but the large range of anatomical locations described in the literature has spawned an abundance of possible theories to explain etiology. However, as the anatomical characteristics of normal testicular descent have only been elucidated recently, many of the theories of testicular ectopia do not incorporate this new perspective. In this study we aimed to determine what was in the literature about ectopic testis since 1980, and then try to explain the different anatomical variants in the light of current knowledge about testicular descent...
December 21, 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27917664/abdominal-wall-ectopic-testis-torsion-mimicking-a-spigelian-hernia-in-an-adult
#10
M Natarajan, H M Alnajjar, C I Woodward, M Tshuma, T Marshall, M Rochester
We report an unusual case of an ectopic testis identified in a 37-year-old man presenting with acute severe right iliac fossa pain and an irreducible mass. Initially diagnosed as a Spigelian hernia, computed tomography and ultrasonography identified the presence of an ectopic testis in the abdominal wall. Interparietal testicular ectopia is an extremely rare condition. We present and discuss the first case in the literature of an ectopic testis located between the internal and external oblique muscle layers of the anterior abdominal wall in an adult...
February 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/27895724/expression-profile-of-spaca5-spaca5-in-spermatogenesis-and-transitional-cell-carcinoma-of-the-bladder
#11
Xiao-Yue Zhang, Qiu-Xia Yan, Xiao-Yan Guo, Cai-Rong Chen, Run-Qiang Chen, Zhi-Ming Cai, Ai-Fa Tang
The majority of bladder cancer-associated mortalities are due to transitional cell carcinoma (TCC), which is the most prevalent and chemoresistant malignancy of the bladder. Sperm acrosome associated 5 (SPACA5)/Spaca5 is a sperm acrosome-associated, c-type lysozyme-like protein that has been recently identified, and has been designated as an attractive candidate antigen for cancer testis. In the present study, the expression profile of SPACA5/Spaca5 was analyzed in spermatogenesis and TCC of the bladder using diverse molecular and cellular biology methods...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27771326/identification-of-a-tspy-co-expression-network-associated-with-dna-hypomethylation-and-tumor-gene-expression-in-somatic-cancers
#12
Tatsuo Kido, Yun-Fai Chris Lau
Testis specific protein Y-encoded (TSPY) is a Y-located proto-oncogene predominantly expressed in normal male germ cells and various types of germ cell tumor. Significantly, TSPY is frequently expressed in somatic cancers including liver cancer but not in adjacent normal tissues, suggesting that ectopic TSPY expression could be associated with oncogenesis in non-germ cell cancers. Various studies demonstrated that TSPY expression promotes growth and proliferation in cancer cells; however, its relationship to other oncogenic events in TSPY-positive cancers remains unknown...
October 20, 2016: Journal of Genetics and Genomics, Yi Chuan Xue Bao
https://www.readbyqxmd.com/read/27579401/adult-presentation-of-ectopic-vas-deferens-with-dysplastic-kidney
#13
Yusuf Saifee, Pranjal Modi
A 24-year-old male presented with voiding lower urinary tract symptoms. On evaluation, the patient was found to have midbulbar urethral stricture and right dysplastic pelvic kidney with right vesicoureteral reflux. A micturating cystourethrogram (MCUG) shows opacification of the right vas deferens along the entire course till the testis. The patient underwent end-to-end urethroplasty. But soon the patient presented with urinary tract infection (UTI) and epididymorchitis in the follow-up period. The patient was explored laparoscopically to remove dysplastic kidney and ectopic vas deferens...
2016: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/27579208/pantaloon-hernia-obstructed-indirect-component-and-direct-component-with-cryptorchidism
#14
Mohan Kumar Kariappa, Vivek Harihar, Ashwini Rajareddy Kothudum, Vivekanand Kedarlingayya Hiremath
Cryptorchidism is a condition in which one or both testes have not passed down into the scrotal sac. It is categorized as true undescended testis in which testes are present in the normal path of descent, and as ectopic testis, in which testes are present at abnormal site. Common complications of cryptorchidism are testicular torsion, subfertility, inguinal hernia, and testicular cancer. Here we present a rare case of pantaloon hernia of obstructed indirect component and direct component with cryptorchidism...
2016: Case Reports in Surgery
https://www.readbyqxmd.com/read/27478577/triorchidism-presenting-as-undescended-testis-in-a-case-of-indirect-inguinal-hernia
#15
Ajay H Bhandarwar, Saurabh S Gandhi, Chintan B Patel, Amol N Wagh, Virendra Gawli, Nimesh A Jain
Triorchidism is the commonest variety of polyorchidism, an entity with more than two testis is an extremely rare congenital anomaly of the testis. Although excision of the abnormal testis is a safer alternative proposed, recent literature suggests more conservative approach in normal testes with watchful regular follow up to screen for malignancy. This case presented as a left inguinal swelling diagnosed as indirect left inguinal hernia. The left side testis was of smaller size (about half) with normal sperm count, morphology and motility...
April 26, 2016: Clinics and Practice
https://www.readbyqxmd.com/read/27411886/testicular-ectopia-in-the-anterior-abdominal-wall-of-a-neonate-a-rare-site-of-ectopic-testis
#16
Salman Atiq Siddiqui, Tamer Ibrahim Marei, Ghada Al-Makhaita
BACKGROUND Abnormal testicular descent can either be undescended or, less commonly, ectopic. Most undescended testes complete the course of descent by the first year of life only if these remain in the normal path of descent. The deviation of the testis may occur to an ectopic location during the transinguinal phase. Of the known ectopic sites, the anterior abdominal wall is the rarest site of testicular ectopia and to our knowledge only 3 cases of this nature have been reported in the available literature to date...
July 14, 2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27293058/decreased-expression-of-bioinformatically-predicted-piwil2-targetting-micrornas-mir-1267-and-mir-2276-in-breast-cancer
#17
S Torkashvand, Z Damavandi, B Mirzaei, M Tavallaei, M Vasei, Seyed Javad Mowla
PURPOSE: Human Piwil2, a member of Piwi subfamily of Argonaute proteins, is primarily expressed in testis, where it regulates self-renewal of germ cells. However, its ectopic expression has been reported with several tumors, including breast cancer. The upregulation of piwil2 in various stages of breast cancer suggested its suitability as a novel tumor biomarker. Considering the vital role of microRNAs (miRNAs) in regulating the expression of most human genes, we hypothesized a concomitant downregulation of the bioinformatically-predicted piwil2-targetting microRNAs in breast cancer...
June 2016: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/27292789/ectopic-synthesis-of-vitellogenin-in-testis-and-epididymis-of-estrogen-treated-lizard-podarcis-sicula
#18
Mariailaria Verderame, Ermelinda Limatola, Rosaria Scudiero
In oviparous vertebrates, vitellogenin (VTG) is the major yolk precursor synthesized in the liver of sexually mature females during the reproductive period. In males, the VTG gene is silent, but it may be activated by estradiol-17β (E2) or estrogen-like substances. Until now, extra-hepatic expression and synthesis of VTG after estrogen exposure has been reported only for aquatic vertebrates. This study demonstrates the ability of testis and epididymis of the terrestrial oviparous lacertid Podarcis sicula to synthesize VTG following E2 exposure...
September 1, 2016: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/27283990/sox2-is-essential-for-in-vivo-reprogramming-of-seminoma-like-tcam-2-cells-to-an-embryonal-carcinoma-like-fate
#19
Daniel Nettersheim, Alena Heimsoeth, Sina Jostes, Simon Schneider, Martin Fellermeyer, Andrea Hofmann, Hubert Schorle
Type II germ cell cancers (GCC) are divided into seminomas, which are highly similar to primordial germ cells and embryonal carcinomas (EC), often described as malignant counterparts to embryonic stem cells.Previously, we demonstrated that the development of GCCs is a highly plastic process and strongly influenced by the microenvironment. While orthotopic transplantation into the testis promotes seminomatous growth of the seminoma-like cell line TCam-2, ectopic xenotransplantation into the flank initiates reprogramming into an EC-like fate...
July 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/27281616/ches-1-like-the-ortholog-of-a-non-obstructive-azoospermia-associated-gene-blocks-germline-stem-cell-differentiation-by-upregulating-dpp-expression-in-drosophila-testis
#20
Jun Yu, Yujuan Liu, Xiang Lan, Hao Wu, Yang Wen, Zuomin Zhou, Zhibin Hu, Jiahao Sha, Xuejiang Guo, Chao Tong
Azoospermia is a high risk factor for testicular germ cell tumors, whose underlying molecular mechanisms remain unknown. In a genome-wide association study to identify novel loci associated with human non-obstructive azoospermia (NOA), we uncovered a single nucleotide polymorphism (rs1887102, P=2.60 ×10-7) in a human gene FOXN3. FOXN3 is an evolutionarily conserved gene. We used Drosophila melanogaster as a model system to test whether CHES-1-like, the Drosophila FOXN3 ortholog, is required for male fertility...
July 5, 2016: Oncotarget
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