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Julia Fernandez Puñal de Araújo, Priscila Lang Podratz, Eduardo Merlo, Isabela Valim Sarmento, Charles Santos da Costa, Oscar Mauricio Santamaria Niño, Rodrigo Alves Faria, Leandro Ceotto Freitas Lima, Jones Bernardes Graceli
Organotin (OTs) compounds are organometallic compounds that are widely used in industry, such as in the manufacture of plastics, pesticides, paints, and others. OTs are released into the environment by anthropogenic actions, leading to contact with aquatic and terrestrial organisms that occur in animal feeding. Although OTs are degraded environmentally, reports have shown the effects of this contamination over the years because it can affect organisms of different trophic levels. OTs act as endocrine-disrupting chemicals (EDCs), which can lead to several abnormalities in organisms...
2018: Frontiers in Endocrinology
Wei Zhou, Geoffry N De Iuliis, Matthew D Dun, Brett Nixon
The testicular spermatozoa of all mammalian species are considered functionally immature owing to their inability to swim in a progressive manner and engage in productive interactions with the cumulus-oocyte complex. The ability to express these key functional attributes develops progressively during the cells' descent through the epididymis, a highly specialized ductal system that forms an integral part of the male reproductive tract. The functional maturation of the spermatozoon is achieved via continuous interactions with the epididymal luminal microenvironment and remarkably, occurs in the complete absence of de novo gene transcription or protein translation...
2018: Frontiers in Endocrinology
B Güney Saruhan, H Sağsöz, E Akbalık, M A Ketani, S Erdoğan
The mammalian testis possesses a special immunological environment because of its properties of remarkable immune privilege and effective local innate immunity. The testicular immune privilege protects immunogenic germ cells from systemic immune attack, and local innate immunity is important in preventing testicular microbial infections. Thus, this study aimed to immunohistochemically demonstrate the distribution and localization of CD68-, CD8-, MHCI- and MHCII-positive immune cells in the testes and epididymes...
March 12, 2018: Anatomia, Histologia, Embryologia
Dalila Rahali, Aicha Jrad-Lamine, Yosra Dallagi, Yassine Bdiri, Nathalie Ba, Michele El May, Saloua El Fazaa, Narges El Golli
Electronic (e)-cigarettes are devices intended to substitute conventional cigarettes, with the aim of being less harmful. In a previous report, we showed that i.p. injection of e-cigarette liquid (e-liquid), with or without nicotine, induced toxicity in the testes of Wistar rats by disrupting oxidative balance and steroidogenesis. In the present work, we further evaluated the impact of e-liquid with or without nicotine on the epididymis of rats using the same procedure. Results showed that e-liquid treatments led to alteration of semen parameters, with a significant drop of at least 50% in sperm vitality, a significant increase of morphologically abnormal spermatozoa and an imbalance of redox status in comparison to the control group...
March 12, 2018: Chinese Journal of Physiology
Yavuz Emre Şükür, Salih Taşkın, Coşkun Şimşir, Cem Atabekoğlu, Murat Sönmezer
No abstract text is available yet for this article.
March 7, 2018: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
S O Osawe, E O Farombi
Certain dietary flavonoids exhibit protective potentials against drug-induced male reproductive toxicities. We investigated the protective effects of quercetin and rutin on sulphasalazine-induced alterations in steroidogenic enzyme activity, hormone profile and spermiotoxicity in rats. Sulphasalazine (SASP, 600 mg/kg bw) was administered alone or in combination with quercetin (20 mg/kg bw) or rutin (10 mg/kg bw) for 14 days. SASP treatment significantly increased relative weights of the epididymis and seminal vesicles...
March 7, 2018: Andrologia
Xi Du, Makafui Nyagblordzro, Lijun An, Xue Gao, Lemei Du, Yangyang Wang, Gregory Ondieki, Siambi Kikete, Xin He
Tripterigium wilfordii glycosides (TWG) demonstrate paramount bioactive effectiveness in the management of many autoimmune diseases, such as rheumatoid arthritis, psoriasis, and nephrotic syndrome. However, its side effects on the hepatic, nephrotic, reproductive, and cardiovascular systems have limited its immense therapeutic potentials. Triptolide (TP) and Celastrol (CL), the leading bioactive as well as toxic constituents of TWG, have been widely studied. These studies have documented the key mechanisms that trigger the toxic reactions and the precautionary measures that could prevent and reduce such reactions...
March 2, 2018: Current Drug Metabolism
Michaela Cadkova, Aneta Kovarova, Veronika Dvorakova, Radovan Metelka, Zuzana Bilkova, Lucie Korecka
A novel enzyme-free electrochemical immunosensor was developed for highly sensitive detection and quantification of human epididymis protein 4 (HE4) in human serum. For the first time, core/shell CdSe/ZnS quantum dots were conjugated with anti-HE4 IgG antibodies for subsequent sandwich-type immunosensing with superparamagnetic microparticles functionalized with anti-HE4 IgG antibodies, which allow rapid and efficient HE4 capture from the sample. Electrochemical detection of anti-HE4 IgG - HE4 - anti-HE4 IgGCdSe/ZnS immunocomplex was performed by recording the current response of Cd(II) ions, released from dissolved quantum dots at screen-printed carbon electrode (SPCE), modified with mercury or bismuth film...
May 15, 2018: Talanta
Giovanna Liguori, Simona Tafuri, Chika Miyoshi, Masashi Yanagisawa, Caterina Squillacioti, Valeria De Pasquale, Nicola Mirabella, Alfredo Vittoria, Anna Costagliola
The peptides orexin A (OXA) and orexin B (OXB) derived from the proteolytic cleavage of a common precursor molecule, prepro-orexin, were originally described in the rat hypothalamus. Successively, they have been found in many other brain regions as well as in peripheral organs of mammals and other less evolved animals. The widespread localization of orexins accounts for the multiple activities that they exert in the body, including the regulation of energy homeostasis, feeding, metabolism, sleep and arousal, stress, addiction, and cardiovascular and endocrine functions...
February 26, 2018: Acta Histochemica
A O Adebayo, A K Akinloye, A O Ihunwo, V O Taiwo, B O Oke
The excurrent duct, which plays vital roles in the reproductive biology of all male mammals, shows some structural variations among different species. Some hormones such as testosterone, estrogen and progesterone, through their different receptors, have been known to be involved in the normal functioning of the excurrent duct. Here we evaluated the presence, localization and patterns of distribution of three hormone receptors, estrogen alpha (ERα), estrogen beta (ERβ) receptors and progesterone receptors (PR) along the excurrent duct of sexually matured male greater cane rats...
December 30, 2017: Nigerian Journal of Physiological Sciences: Official Publication of the Physiological Society of Nigeria
Gregory R Rompala, Anais Mounier, Cody M Wolfe, Qishan Lin, Iliya Lefterov, Gregg E Homanics
While the risks of maternal alcohol abuse during pregnancy are well-established, several preclinical studies suggest that chronic preconception alcohol consumption by either parent may also have significance consequences for offspring health and development. Notably, since isogenic male mice used in these studies are not involved in gestation or rearing of offspring, the cross-generational effects of paternal alcohol exposure suggest a germline-based epigenetic mechanism. Many recent studies have demonstrated that the effects of paternal environmental exposures such as stress or malnutrition can be transmitted to the next generation via alterations to small noncoding RNAs in sperm...
2018: Frontiers in Genetics
Zuhal Dincer, Virginie Piccicuto, Ursula Junker Walker, Andreas Mahl, Sean McKeag
Arteritis/polyarteritis occurs spontaneously in many species used in preclinical toxicology studies. In Göttingen minipigs, arteritis/polyarteritis is an occasionally observed background change. In the minipig, this finding differs in frequency and nature from age-related polyarteritis nodosa in rats or monkeys, and Beagle pain syndrome in dogs. In minipigs, it can be present in a single small- or medium-sized artery of an organ or a few organs and is most commonly recorded in the cardiac and extracardiac blood vessels, vagina, oviduct, rectum, epididymis, spinal cord, pancreas, urinary bladder, kidneys, and stomach...
February 2018: Toxicologic Pathology
E Bianchi, A Stermer, K Boekelheide, M Sigman, S J Hall, G Reyes, E Dere, K Hwang
Sperm RNA is a sensitive monitoring endpoint for male reproductive toxicants, and a potential biomarker to assess male infertility and sperm quality. However, isolation of sperm RNA is a challenging procedure due to the heterogeneous population of cells present in the ejaculate, the low yield of RNA per spermatozoon, and the absence of 18S and 28S ribosomal RNA subunits. The unique biology of spermatozoa has created some uncertainty in the field about RNA isolation methods, indicating the need for rigorous quality control checks to ensure reproducibility of data generated from sperm RNA...
February 22, 2018: Andrology
Yumi Motokura, Haruki Watanabe, Yuriko Yamamura, Yuzuki Kano, Yoshinori Matsumoto, Tomoko Kawabata, Ken-Ei Sada, Jun Wada
No abstract text is available yet for this article.
February 22, 2018: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
Xi-Li Miao, Gui-Min Gao, Lei Jiang, Rui Xu, Da-Peng Wan
Testicular cell apoptosis is associated with impaired spermatogenesis. It has been reported that Asiatic acid (AA) may suppress apoptosis. However, little is known about the effect of AA on high-fat diet (HFD)-induced impairment of spermatogenesis. The aim of the present study was to determine whether AA protects against HFD-induced impairment of spermatogenesis. Sprague-Dawley rats were randomly divided into three groups: Control group, HFD group and AA (50 mg/kg) + HFD group. Rats fed an HFD were orally administered with AA (50 mg/kg) daily for 12 weeks, and blood samples, testis and epididymis were harvested for further analysis...
March 2018: Experimental and Therapeutic Medicine
Gerhard Schuler, Yaser Dezhkam, Linda Tenbusch, Michele C Klymiuk, Bettina Zimmer, Bernd Hoffmann
Boars exhibit high concentrations of sulfonated estrogens (SE) mainly originating from the testicular-epididymal compartment. Intriguingly, in porcine Leydig cells sulfonation of estrogens is colocalized with aromatase and steroid sulfatase (STS), indicating that de novo synthesis of unconjugated estrogens (UE), their sulfonation and hydrolysis of SE occur within the same cell type. So far in boars no plausible concept concerning the role of SE has been put forward. To obtain new information on SE formation and hydrolysis the porcine testicular-epididymal compartment was screened for the expression of the estrogen specific sulfotransferase SULT1E1 and STS applying real-time RT-qPCR, Western Blot and immunohistochemistry...
February 21, 2018: Journal of Molecular Endocrinology
Andréia M Silva, Erica C G Praxedes, Lívia B Campos, Luana G P Bezerra, Samara S J Moreira, Keilla M Maia, Ana L P Souza, Alexandre R Silva
As a non-threatened hystricognath rodent species, Spix's yellow-toothed cavies can be used as a model for the development of assisted reproductive techniques for the conservation of closely related species. The objective was to establish a functional protocol for cryopreservation of epididymal sperm from these cavies. Twelve sexually mature males, ∼2 y old and weighing ∼300 g, were euthanized. Sperm were recovered by retrograde flushing of the vas deferens and cauda epididymis with Tris extender. Thereafter, sperm were extended in Tris plus 20% egg yolk, with 3%, 6% or 9% glycerol or dimethyl sulfoxide (DMSO), placed in 0...
February 15, 2018: Animal Reproduction Science
Gabriel Adan Araújo Leite, Marciana Sanabria, Marilia Martins Cavariani, Janete Aparecida Anselmo-Franci, Patrícia Fernanda Felipe Pinheiro, Raquel Fantin Domeniconi, Wilma De Grava Kempinas
The increase of obesity, bad eating habits and the lack of physical exercises are highly related to dyslipidemias. Rosuvastatin is a lipid-lowering drug and has been indicated to prevent cardiovascular diseases and to treat dyslipidemias due to its higher efficiency to reduce serum cholesterol concentrations. This study aimed to evaluate the reproductive adverse effects on sexual maturity due to rosuvastatin exposure in juvenile male rats during prepuberty. Three groups were randomly formed with newly weaned rats: control, whose rats received saline solution 0...
February 19, 2018: Journal of Applied Toxicology: JAT
Sachin Sharma, Aaron Hanukoglu, Israel Hanukoglu
Spermatogenesis starts within the seminiferous tubules of the testis by mitotic division of spermatogonia that produces spermatocytes. Meiotic division of these spermatocytes produces haploid spermatids that differentiate into spermatozoa. In this study, we examined the expression of ENaC and CFTR (a Cl - channel) in rat testicular sections using confocal microscopic immunofluorescence. The structural integrity of the seminiferous tubule sections was verified by precise phalloidin staining of the actin fibers located abundantly at both basal and adluminal tight junctions...
February 16, 2018: Journal of Molecular Histology
Laura Ryan, Padraig Daly, Ivor Cullen, Maeve Doyle
Epididymo-orchitis is a common urological condition in men of all ages, causing a unilateral or bilateral swelling of the epididymis and/or testis. It is frequently caused by sexually transmitted infections, Chlamydia trachomatis and Neisseria gonorrheae, as well as common enteric organisms implicated in urinary tract infections. Men over 35 years old may develop epididymo-orchitis associated with enteric organisms, often associated with functional bladder outlet problems such as benign prostatic hyperplasia or urethral stricture disease...
February 15, 2018: European Journal of Clinical Microbiology & Infectious Diseases
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