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https://www.readbyqxmd.com/read/28794165/steroidogenesis-during-postnatal-testicular-development-of-galea-spixii
#1
Paulo Ramos da Silva Santos, Francilieusa Delys Oliveira, Maria Angélica Machado Arroyo, Moacir Franco Oliveira, Patricia Castelucci, Alan Conley, Antônio Chaves de Assis Neto
The androgen/estrogen balance is essential for normal sexual development and reproduction in mammals. Studies performed herein investigated the potential for estrogen synthesis in cells of the testes of a hystricomorph rodent, Galea spixii. The study characterized the expression of the key enzymes responsible for estrogen and androgen synthesis, cytochromes P450 aromatase (P450arom), 17α-hydroxylase/17,20-lyase (P450c17) respectively, as well as the redox partner NADPH cytochrome P450 oxido-reductase (CPR) required to support electron transfer and catalysis of these P450s, by immunohistochemistry (IHC) and quantitative polymerase chain reaction (qPCR) analysis, throughout postnatal sexual development...
August 8, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28792252/rosa-damascena-mill-essential-oil-has-protective-effect-against-testicular-damage-in-diabetic-rats
#2
Somayeh Hamedi, Tahoora Shomali, Aliakbar Haghighat
This study investigates the protective effect of Rosa damascena essential oil on diabetes-induced testicular damage in rats. Thirty-six male Wistar rats were randomly divided into 6 equal groups: Group I: negative control (no treatment); Group II: positive control (diabetic by alloxan injection); Groups III-VI that rendered diabetic and received, respectively, 50, 100, 200, and 400 µg/kg/day rose oil, orally for 28 days. Rose oil did not significantly change body weight and blood glucose level as compared to positive control...
August 9, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28783592/the-efficiency-of-spermatogenesis-and-the-support-capacity-of-sertoli-cells-in-characiformes
#3
Maira da Silva Rodrigues, Diógenes Henrique de Siqueira-Silva, Patrícia Postingel Quirino, Alexandre Ninhaus-Silveira, Rosicleire Veríssimo-Silveira
This stereological analysis of the types of germ cells and the number of Sertoli cells per cyst in Astyanax altiparanae testes during spermatogenesis is the first such report in Characiformes. Testes of 25 male A. altiparanae were examined. Based on the number of spermatogonia B per cyst (469.2 ± 9.92), we estimated that spermatogonia undergo at least nine mitotic divisions before differentiating into primary spermatocytes. There are four spermatogonia types: undifferentiated spermatogonia A*, undifferentiated spermatogonia, differentiated spermatogonia, and type B spermatogonia...
July 27, 2017: Theriogenology
https://www.readbyqxmd.com/read/28783504/puberty-arises-with-testicular-alterations-and-defective-amh-expression-in-rams-prenatally-exposed-to-testosterone
#4
S E Recabarren, M Recabarren, D Sandoval, A Carrasco, V Padmanabhan, R Rey, H G Richter, C C Perez-Marin, T Sir-Petermann, P P Rojas-Garcia
The male gonadal tissue can be a sensitive target to the reprogramming effects of testosterone (T) during prenatal development. We have demonstrated that male lambs born to dams receiving T during pregnancy-a model system to the polycystic ovary syndrome (PCOS)-show a decreased number of germ cells early in life, and when adult, a reduced amount of sperm and ejaculate volume. These findings are a key to put attention to the male offspring of women bearing PCOS, as they are exposed to increased levels of androgen during pregnancy which can reprogram their reproductive outcome...
June 23, 2017: Domestic Animal Endocrinology
https://www.readbyqxmd.com/read/28782295/activation-of-tlr-signalling-regulates-microwave-radiation-mediated-impairment-of-spermatogenesis-in-rat-testis
#5
H Wu, D Wang, Y Meng, H Ning, X Liu, Y Xie, L Cui, S Wang, X Xu, R Peng
Microwave radiation could increase the expression of pro-inflammatory cytokines in rat Sertoli cells, which may impair spermatogenesis. However, the mechanisms that microwave radiation induces the cytokine expression in Sertoli cells remain to be clarified. The activation of TLRs by their ligands can trigger a common signalling pathway to upregulate inflammatory cytokines such as IL-1, IL-6, IL-12 and TNF-α. Microwave radiation can increase the expression of TLRs in lymphocytes. The purpose of this study was to determine the effect of microwave radiation on the TLRs in rat testis...
August 6, 2017: Andrologia
https://www.readbyqxmd.com/read/28774687/the-environment-and-male-reproduction-the-effect-of-cadmium-exposure-on-reproductive-system-and-semen-quality-and-its-implication-in-fertility
#6
REVIEW
Cristina de Angelis, Mariano Galdiero, Claudia Pivonello, Ciro Salzano, Daniele Gianfrilli, Prisco Piscitelli, Andrea Lenzi, Annamaria Colao, Rosario Pivonello
Cadmium is an environmental pollutant known as endocrine disruptor. Testis is particularly susceptible to cadmium, and testis injury occurs at high but even low levels of exposure. Cadmium reproductive toxicity is mediated by multiple mechanisms, including structural damage to testis vasculature and blood-testis barrier, inflammation, cytotoxicity on Sertoli and Leydig cells, oxidative stress, apoptosis, epigenetic actions, and disturbance of the hypothalamus-pituitary-gonadal axis. The current review outlines epidemiological observational findings from environmental and occupational exposure in humans, and reports experimental studies in humans and animals...
July 31, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28771045/expression-patterns-and-changes-of-the-lcn2-gene-in-the-testes-of-induced-cryptorchidism-and-busulfan-treated-mice
#7
Zhenlong Kang, Na Qiao, Zhigang Tan, Zhaoxin Tang, Ying Li
Lipocalin-2 (LCN2) was known to play various roles in different type cells; however, little was known about the effect of LCN2 in male fertility. In this study, we aimed to explore the expression pattern of LCN2 with increasing age in mice, and to obtain insight into the role of LCN2 in mice testes by induced cryptorchidism and busulfan-treated infertility. In situ hybridization showed that LCN2 was localized primarily in Leydig cells, but was absent in Sertoli and germ cells. Its expression in testes exhibited an age-related increase from day 1 to 8 months, then reduced by the twelth month...
August 3, 2017: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/28770898/sex-cord-stromal-tumours-of-the-ovary-experience-at-shifa-international-hospital-islamabad
#8
Asim Qureshi, Masroor Hassan, Nadira Mamoon, Zafar Ali, Imran Nazir Ahmed
This descriptive study was carried out at Pathology Department, Shifa International Hospital from 2007 to 2016; all sex cord stromal tumours diagnosed during this time period were included. Epithelial, germ cell and metastatic tumours were excluded from the study. A total of 1254 Ovarian tumours were brought to Shifa of which47 (4%) were labeled as sex cord stromal tumours. Of these 36( 76 %)were granulosa cell tumour (adult33, juvenile3), 7 were labeled as sertoli leydig cell tumours (15%), 3 as thecoma/ fibroma group (7%)and only one case was labeled as microcystic stromal tumour of the ovary (2%)...
July 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28768794/embryonic-stem-cell-derived-germ-cells-induce-spermatogenesis-following-transplantation-to-testis-of-adult-mouse-azoospermia-model
#9
Zohreh Makoolati, Mansoureh Movahedin, Mehdi Forouzandeh-Moghadam, Majid Naghdi, Morteza Koruji
This study aimed to (a) identify the exogenous factors that allow in vitro differentiation of mouse SSCs from embryonic stem cells (ESCs); (b) evaluate the effects of Sertoli cells on SSCs enrichment; and (c) to assess the success of transplantation using in vitro differentiated SSCs in mouse busulfan-treated azoospermia model. One-day-old embryoid body (EB) received 5 ng/ml BMP4 for 4 days, 3 µM retinoic acid (RA) in STO co-culture (Co-C) system for 7 days and subsequently co-cultured for 2 days with Sertoli cell in the presence or absence of LIF, bFGF and RA composition and in the presence of these factors in the simple culture media...
August 2, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28765625/blood-testis-barrier-integrity-depends-on-pin1-expression-in-sertoli-cells
#10
Rabia Islam, Heein Yoon, Bong-Soo Kim, Han-Sol Bae, Hye-Rim Shin, Woo-Jin Kim, Won-Joon Yoon, Yun-Sil Lee, Kyung Mi Woo, Jeong-Hwa Baek, Hyun-Mo Ryoo
The conformation and function of a subset of serine and threonine-phosphorylated proteins are regulated by the prolyl isomerase Pin1 through isomerization of phosphorylated Ser/Thr-Pro bonds. Pin1 is intensely expressed in Sertoli cells, but its function in this post mitotic cell remains unclear. Our aim was to investigate the role of Pin1 in the Sertoli cells. Lack of Pin1 caused disruption of the blood-testis barrier. We next investigated if the activin pathways in the Sertoli cells were affected by lack of Pin1 through immunostaining for Smad3 protein in testis tissue...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28765489/embryonal-carcinoma-presenting-as-a-calcified-solitary-testicular-mass-on-ultrasound
#11
Daniel Gerber, Henry Collier Wright, Rachael D Sussman, Lambros Stamatakis
A 24-year-old man presented with a 2-week history of a painless right testicular mass; ultrasound demonstrated a dense, solitary calcified mass. The patient elected observation after further workup showed no evidence of metastasis.A repeat ultrasound 3 months later showed interval growth and the patient underwent right radical orchiectomy. Pathology was consistent with pure embryonal carcinoma of the testis. Calcified testicular masses are typically benign but do carry a differential of spermatic granuloma, large-cell calcifying Sertoli cell tumour, trauma, tuberculosis, filariasis, calcified Leydig cell tumour and burned-out testicular tumour...
July 31, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28765008/microcystin-leucine-arginine-exhibits-immunomodulatory-roles-in-testicular-cells-resulting-in-orchitis
#12
Yabing Chen, Jing Wang, Qin Zhang, Zou Xiang, Dongmei Li, Xiaodong Han
Microcystin-leucine arginine (MC-LR) causes testicular inflammation and hinders spermatogenesis. However, the molecular mechanisms underlying the immune responses to MC-LR in the testis have not been elucidated in detail. In this study, we show that MC-LR induced immune responses in Sertoli cells (SC), germ cells (GC), and Leydig cells (LC) via activating phosphatidylinositol 3-kinase (PI3K)/AKT/nuclear factor kappa B (NF-κB), resulting in the production of pro-inflammatory cytokines and chemokines including tumor necrosis factor alpha (TNF-α), interleukin-6 (IL-6), monocyte chemoattractant protein-1 (MCP-1), and chemokine (C-X-C motif) ligand 10 (CXCL10)...
July 29, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28762519/pathological-changes-in-sertoli-cells-and-dysregulation-of-divalent-metal-transporter-1-with-iron-responsive-element-in%C3%A2-the-testes-of-idiopathic-azoospermia-patients
#13
T Jing, P Wang, Y Liu, J Zhao, X Niu, X Wang
Iron is essential for rapidly dividing spermatocytes during normal mammalian spermatogenesis. Decreased transferrin and transferrin receptor levels were observed in seminal plasma from idiopathic azoospermia (IA) patients, suggesting disturbed iron metabolism in IA testes. However, how Sertoli cells (SCs) contribute to the iron homoeostasis in IA is still unclear. In this study, we analysed 30 IA and 30 age-matched obstructive azoospermia (OA) patients undergoing testicular sperm aspiration (TESA). SCs hyperplasia was indicated by higher SC density and Ki-67 labelling index in the IA TESA specimens...
August 1, 2017: Andrologia
https://www.readbyqxmd.com/read/28760667/cell-adhesion-molecules-expression-pattern-indicates-that-somatic-cells-arbitrate-gonadal-sex-of-differentiating-bipotential-fetal-mouse-gonad
#14
Rafal P Piprek, Michal Kolasa, Dagmara Podkowa, Malgorzata Kloc, Jacek Z Kubiak
Unlike other organ anlagens, the primordial gonad is sexually bipotential in all animals. In mouse, the bipotential gonad differentiates into testis or ovary depending on the genetic sex (XY or XX) of the fetus. During gonad development cells segregate, depending on genetic sex, into distinct compartments: testis cords and interstitium form in XY gonad, and germ cell cysts and stroma in XX gonad. However, our knowledge of mechanisms governing gonadal sex differentiation remains very vague. Because it is known that adhesion molecules (CAMs) play a key role in organogenesis, we suspected that diversified expression of CAMs should also play a crucial role in gonad development...
July 28, 2017: Mechanisms of Development
https://www.readbyqxmd.com/read/28752067/two-stage-urethroplasty-with-buccal-mucosa-for-penoscrotal-hypospadias-reconstruction-in-a-male-with-a-46-xx-karyotype
#15
Pieter D'hulst, Jochen Darras, Steven Joniau, Pieter Mattelaer, Linsey Winne, Diederik Ponette
We present a case regarding a 32-year old African male with penoscrotal hypospadias, left cryptorchidism and a left inguinal hernia. There were moderate masculinization characteristics. He underwent a Lichtenstein hernia repair with perioperative biopsies of the left inguinal testis and epididymis. Microscopic examination showed a Sertoli-only left testis with Leydig-cell hyperplasia and the left epididymis consisted of ovarian tissue with corpora albicantia and maturing follicles. Endocrinological evaluation showed a sex-determining region Y (SRY) negative 46,XX karyotype...
September 2017: Urology Case Reports
https://www.readbyqxmd.com/read/28751916/sertoli-leydig-cell-tumor-with-concurrent-rhabdomyosarcoma-three-case-reports-and-a-review-of-the-literature
#16
Trisha Plastini, Arthur Staddon
Sertoli-Leydig Cell Tumors (SLCTs) make up <1% of all ovarian tumors and are benign or malignant, androgen-secreting tumors. Rhabdomyosarcoma (RMS) is a heterogeneous group of malignant tumors that resemble developing skeletal muscle. There have been case reports of patients with concurrent SLCT and RMS with limited treatment options. We aim to demonstrate treatment strategies used in our patients, which seemed to have prolonged survival when compared to prior case reports of patients not cured by surgical resection...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28750644/a-retrospective-study-of-reproductive-outcomes-after-fertility-sparing-surgery-and-postoperative-adjuvant-chemotherapy-in-malignant-ovarian-germ-cell-tumors-and-sex-cord-stromal-tumors
#17
Ning Zhang, Ruifang Chen, Keqin Hua, Ying Zhang
BACKGROUND: To retrospectively investigate reproductive outcomes after fertility-sparing surgery and postoperative adjuvant chemotherapy in malignant ovarian germ cell tumors (MOGCT) and sex cord-stromal tumors (SCST). METHODS: Data from 32 MOGCT (6 dysgerminomas, 6 yolk sac tumors, 17 immature teratomas, and 3 mixed germ cell tumors) and 9 SCST (4 granulosa cell tumors and 5 sertoli-leydig cell tumors) aged from 18 to 35, treated in the Obstetrics and Gynecology Hospital of Fudan University from October 2003 to October 2013 were collected and analyzed...
July 27, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28748527/the-prevalence-of-dicer1-pathogenic-variation-in-population-databases
#18
Jung Kim, Amanda Field, Kris Ann P Schultz, D Ashley Hill, Douglas R Stewart
The DICER1 syndrome is associated with a variety of rare benign and malignant tumors, including pleuropulmonary blastoma (PPB), cystic nephroma (CN) and Sertoli-Leydig cell tumor (SLCT). The prevalence and penetrance of pathogenic DICER1 variation in the general population is unknown. We examined three publicly-available germline whole exome sequence datasets: Exome Aggregation Consortium (ExAC), 1000 Genomes (1000G), and the Exome Sequencing Project (ESP). To avoid over-estimation of pathogenic DICER1 variation from cancer-associated exomes, we excluded The Cancer Genome Atlas (TCGA) variants from ExAC...
July 27, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28747671/erratum-perfluorooctanesulfonate-pfos-induced-sertoli-cell-injury-through-a-disruption-of-f-actin-and-microtubule-organization-is-mediated-by-akt1-2
#19
Ying Gao, Haiqi Chen, Xiang Xiao, Wing-Yee Lui, Will M Lee, Dolores D Mruk, C Yan Cheng
A correction to this article has been published and is linked from the HTML version of this paper. The error has been fixed in the paper.
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28747195/oleic-acid-induces-down-regulation-of-the-granulosa-cell-identity-marker-foxl2-and-up-regulation-of-the-sertoli-cell-marker-sox9-in-bovine-granulosa-cells
#20
Vengala Rao Yenuganti, Jens Vanselow
During negative energy balance, the concentration of different fatty acids, especially of oleic acid (OA) increases in the follicular fluid of cattle. Previously, we showed that OA induced morphological, physiological and molecular changes in cultured bovine granulosa cells. In our present study we analyzed effects of OA on the expression of markers for granulosa and Sertoli cell identity, FOXL2 and SOX9, respectively, in addition to effects on the FOXL2 regulated genes ESR2, FST, PTGS2 and PPARG. The results showed that OA down-regulated FOXL2, ESR2, FST and PPARG but up-regulated PTGS2 and SOX9...
July 26, 2017: Reproductive Biology and Endocrinology: RB&E
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