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https://www.readbyqxmd.com/read/29156775/monophosphoryl-lipid-a-attenuates-radiation-injury-through-tlr4-activation
#1
Jiaming Guo, Yuanyuan Chen, Xiao Lei, Yang Xu, Zhe Liu, Jianming Cai, Fu Gao, Yanyong Yang
Ionizing radiation causes severe damage to human body, and normal tissue toxicity in cancer radiotherapy also limits its further application. It is urgently required to develop safe and effective radioprotector. Our previous study has shown that toll like receptor 4 (TLR4) was dispensable for basal radiation resistance. However, severe toxicity of its traditional agonist lipopolysaccharide limits the clinical application. In present study, we demonstrated that monophosphoryl lipid A (MPLA), a potent TLR4 agonist with low toxicity, effectively attenuated radiation injury on in vitro and in vivo...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29155017/p-glycoprotein-mdr1-abcb1-and-breast-cancer-resistance-protein-bcrp-abcg2-affect-brain-accumulation-and-intestinal-disposition-of-encorafenib-in-mice
#2
Jing Wang, Changpei Gan, Rolf W Sparidans, Els Wagenaar, Stéphanie van Hoppe, Jos H Beijnen, Alfred H Schinkel
Encorafenib (LGX818) is a promising BRAF(V600E) inhibitor that has efficacy against metastatic melanoma. To better understand its pharmacokinetics, we studied its interactions with the multidrug efflux transporters ABCB1 and ABCG2 and the multidrug metabolizing enzyme CYP3A. In polarized MDCK-II cells, encorafenib was efficiently transported by canine and human ABCB1 and ABCG2 and by mouse Abcg2. Upon oral administration to wild-type, Abcb1a/1b(-/-), Abcg2(-/-), and Abcb1a/1b;Abcg2(-/-) mice, encorafenib was absorbed very quickly and to very high plasma levels, but without clear changes in oral availability between the strains...
November 14, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29150642/rescue-of-pfos-induced-human-sertoli-cell-injury-by-overexpressing-a-p-fak-y407e-phosphomimetic-mutant
#3
Haiqi Chen, Ying Gao, Dolores D Mruk, Xiang Xiao, Constance M John, Paul J Turek, Wing-Yee Lui, Will M Lee, Bruno Silvestrini, C Yan Cheng
PFOS induces Sertoli cell injury using testicular cells isolated from rodent testes, but it remains unknown if PFOS has similar effects in humans. Herein, we maintained human Sertoli cells in a mitotically active state in vitro, thus enabling transfection experiments that altered gene expression to explore the molecular mechanism(s) underlying toxicant-induced cell injury. Human Sertoli cells obtained from men at ages 15, 23, 36 and 40 were cultured in vitro. These differentiated Sertoli cells remained mitotically active when cultured in the presence of 10% FBS (fetal bovine serum), with a replication time of ~1-3 weeks...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29148520/an-in-vitro-prototype-of-a-porcine-biomimetic-testis-like-cell-culture-system-a-novel-tool-for-the-study-of-reassembled-sertoli-and-leydig-cells
#4
Iva Arato, Giovanni Luca, Francesca Mancuso, Catia Bellucci, Cinzia Lilli, Mario Calvitti, Barbara C Hansen, Domenico Milardi, Giuseppe Grande, Riccardo Calafiore
At present, there is no reliable in vitro assembled prepubertal testis-like biomimetic organ culture system designed to assess the functional effects of human gonadotropins on Sertoli and Leydig cells. Spermatogenesis is regulated by endocrine, paracrine, and juxtacrine factors (testicular cross-talk), mainly orchestrated by gonadotropins such as luteinizing hormone (LH) and follicle-stimulating hormone (FSH) that play a pivotal role by stimulating Leydig and Sertoli cells, respectively. The aim of our study was to set up an in vitro prepubertal porcine bioengineered construct as a new model for experimental studies on reassembled Sertoli and Leydig cells...
November 10, 2017: Asian Journal of Andrology
https://www.readbyqxmd.com/read/29145650/loss-of-p300-and-cbp-disrupts-histone-acetylation-at-the-mouse-sry-promoter-and-causes-xy-gonadal-sex-reversal
#5
Gwenn-Aël Carré, Pam Siggers, Marilena Xipolita, Paul Brindle, Beat Lutz, Sara Wells, Andy Greenfield
CREB-binding protein (CBP, CREBBP, KAT3A) and its closely related paralogue p300 (EP300, KAT3B), together termed p300/CBP, are histone/lysine acetyl-transferases that control gene expression by modifying chromatin-associated proteins. Here, we report roles for both of these chromatin-modifying enzymes in mouse sex determination, the process by which the embryonic gonad develops into a testis or an ovary. By targeting gene ablation to embryonic gonadal somatic cells using an inducible Cre line, we show that gonads lacking either gene exhibit major abnormalities of XY gonad development at 14...
November 14, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29138811/high-expression-of-mage-a9-contributes-to-stemness-and-malignancy-of-human-hepatocellular-carcinoma
#6
Youping Wei, Yanqin Wang, Jing Gong, Lihua Rao, Zhiwei Wu, Teng Nie, Dongling Shi, Liming Zhang
MAGE-A9, a well-characterized cancer testis antigen (CTA), belongs to a member of melanoma antigen gene (MAGE) family. In human malignancies, aberrant expression of MAGE genes correlated with poor clinical prognosis, increased tumor growth, metastases, and enrichment in stem cell populations of certain cancers. Cancer stem cells (CSCs) have been proposed to contribute to the major malignant phenotypes of liver cancer, including recurrence, metastasis and chemoresistance. However, expression and potential role of MAGE-A9 in liver cancer stem cells (LCSCs) still remain unclear...
November 9, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/29137315/protective-effects-of-sulforaphane-on-di-n-butylphthalate-induced-testicular-oxidative-stress-injury-in-male-mice-offsprings-via-activating-nrf2-are-pathway
#7
Zhiqiang Qin, Jingyuan Tang, Peng Han, Xuping Jiang, Chengdi Yang, Ran Li, Min Tang, Baixin Shen, Wei Wang, Chao Qin, Wei Zhang
Di-N-butylphthalate (DBP) is one of the most common endocrine-disrupting chemicals which can disrupt human endocrine system, especially in the male reproductive system. Here, this study was aimed to determine whether sulforaphane (SFN) could protect against testicular oxidative stress injury induced by DBP in male mice offsprings. Wild-type (Nrf2(+/+)) and Nrf2-deficient (Nrf2(-/-)) timed-pregnant mice were given DBP orally from embryonic day (E)14.5 to E19.5. Subsequently, the oxidative stress markers were evaluated...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29136520/characterization-of-myeloid-cell-populations-in-human-testes-collected-after-sex-reassignment-surgery
#8
Rosalie Ponte, Franck P Dupuy, Fadi Brimo, Vikram Mehraj, Pierre Brassard, Maud Belanger, Ekaterina Yurchenko, Mohammad-Ali Jenabian, Nicole F Bernard, Jean-Pierre Routy
The testis has been described in animal models as a site of immune privilege, which protects spermatids against tissue damage during inflammation. Myeloid cells, including macrophages and dendritic cells (DC), are defined as key players in the testicular immune privilege in animal models. However, their distribution and frequency in human testis remain poorly described. To overcome the challenges related to tissue sampling, we obtained testicular tissue from men under hormonal therapy who elected to have sex reassignment surgery (SRS)...
October 14, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/29134181/pregnancy-and-live-birth-after-follicle-stimulating-hormone-treatment-for-an-infertile-couple-including-a-male-affected-by-sertoli-cell-only-syndrome
#9
Gianni Paulis, Luca Paulis, Gennaro Romano, Carmen Concas, Marika Di Sarno, Renata Pagano, Antonio Di Filippo, Maria Luisa Di Petrillo
In males with nonobstructive azoospermia, one of the main histopathologic patterns of the testis is Sertoli cell-only syndrome (SCOS), in which no germ cells are present and only Sertoli cells are contained in the seminiferous tubules. There is not any formal treatment for this pathological condition. However, several studies reported the possibility to perform testicular sperm extraction in patients with SCOS, although, according to some authors, sperm retrieval is possible only in the presence of focal spermatogenesis...
2017: Research and Reports in Urology
https://www.readbyqxmd.com/read/29130960/piwi-proteins-and-piwi-interacting-rna-emerging-roles-in-cancer
#10
Yi-Neng Han, Yuan Li, Sheng-Qiang Xia, Yuan-Yuan Zhang, Jun-Hua Zheng, Wei Li
P-Element induced wimpy testis (PIWI)-interacting RNAs (piRNAs) are a type of noncoding RNAs (ncRNAs) and interact with PIWI proteins. piRNAs were primarily described in the germline, but emerging evidence revealed that piRNAs are expressed in a tissue-specific manner among multiple human somatic tissue types as well and play important roles in transposon silencing, epigenetic regulation, gene and protein regulation, genome rearrangement, spermatogenesis and germ stem-cell maintenance. PIWI proteins were first discovered in Drosophila and they play roles in spermatogenesis, germline stem-cell maintenance, self-renewal, retrotransposons silencing and the male germline mobility control...
November 3, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29118547/benign-testicular-neoplasm-in-a-human-immunodeficiency-virus-positive-patient-masquerading-as-testicular-cancer
#11
Mansi Oberoi, Thanmaya Reddy, Jennifer B Gordetsky, John V Thomas, Soroush Rais-Bahrami
Inflammatory myofibroblastic tumor (IMT) is a rare, benign neoplasm comprising spindle myoepithelial cells in the background of inflammatory cells. It can involve multiple anatomic sites in the body but rarely involves the testis. We report a case of 52-year-old male patient with a history of human immunodeficiency virus who presented with a painless, testicular mass for 2 months. Despite being treated with prolonged antibiotics and nonsteroidal anti-inflammatory drugs, scrotal ultrasound demonstrated an increase in the size of the lesion...
October 2017: Urology Annals
https://www.readbyqxmd.com/read/29100724/expression-of-the-gm2-activator-protein-in-mouse-testis
#12
Yu-Teh Li, Su-Chen Li, I-Li Chen
The GM2-activator protein (GM2-AP), revealed by Li et al. in 1973 in human liver, was initially identified as a protein cofactor that stimulated β-hexosaminidase A to hydrolyze N-acetylgalactosamine from GM2 ganglioside. This cofactor was found to be missing in human variant AB Tay-Sachs disease. Over the years, the GM2-AP has also been shown to be involved in kidney vesicular transport, lipid presentation by CD1 molecule to T-cells, and interaction of human sperm with zona pellucida. Since the expression of the GM2-AP via mRNA detection in mouse tissues was found to be the highest in testis, we became interested in the localization of the GM2-AP at cellular level in mouse testis during spermatogenesis...
October 31, 2017: Reproductive Biology
https://www.readbyqxmd.com/read/29100688/bisphenol-a-and-reproductive-hormones-and-cortisol-in-peripubertal-boys-the-inma-granada-cohort
#13
Vicente Mustieles, Olga Ocón-Hernandez, Lidia Mínguez-Alarcón, Cristina Dávila-Arias, Rocío Pérez-Lobato, Irene Calvente, Juan P Arrebola, Fernando Vela-Soria, Soledad Rubio, Russ Hauser, Nicolás Olea, Mariana F Fernández
INTRODUCTION: Bisphenol A (BPA) is a well-known endocrine disrupting compound. Although several studies have investigated the effect of BPA exposure and reproductive hormones in humans, results have been inconsistent. OBJECTIVE: To explore the cross-sectional relationship between bisphenol A (BPA) exposure and reproductive hormones/cortisol among peripubertal boys. MATERIAL AND METHODS: Urinary BPA and serum hormones were assessed in 172 boys belonging to the INMA "Environment and Childhood" Granada birth cohort in their follow-up at 9-11years of age...
October 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29092799/novel-drosophila-model-for-psychiatric-disorders-including-autism-spectrum-disorder-by-targeting-of-atp-binding-cassette-protein-a
#14
Ibuki Ueoka, Hitoshi Kawashima, Atsushi Konishi, Mikio Aoki, Ryo Tanaka, Hideki Yoshida, Toru Maeda, Mamiko Ozaki, Masamitsu Yamaguchi
Autism spectrum disorder (ASD) is characterized by persistent deficits in social communication and social interactions, as well as restricted, stereotyped patterns of behavior and interests. In addition, alterations in circadian sleep-wake rhythm are common in young children with ASD. Mutations in ATP binding cassette subfamily A member 13 (ABCA13) have been recently identified in a monkey that displays behavior associated with ASD. ABCA13, a member of the ABCA family of proteins, is predicted to transport lipid molecules and is expressed in the human trachea, testis, bone marrow, hippocampus, cortex, and other tissues...
October 29, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/29090093/effects-of-pituitary-specific-overexpression-of-fsh%C3%AE-%C3%AE-on-reproductive-traits-in-transgenic-boars
#15
Wenting Li, Yujun Quan, Mengmeng Zhang, Kejun Wang, Muzhen Zhu, Ye Chen, Qiuyan Li, Keliang Wu
BACKGROUND: Follicle-stimulating hormone (FSH) is a gonadotropin synthesized and secreted by the pituitary gland. FSH stimulates follicle development and maturation in females. It also plays an important role in spermatogenesis in males, including humans and mice. However, the effects of FSH on male pigs are largely unknown. In this study, we generated transgenic pigs to investigate the effects of FSHα/β overexpression on reproductive traits in boars. RESULTS: After five transgenic F0 founders were crossed with wide-type pigs, 193 F1 animals were obtained...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/29082235/tissue-and-cell-type-specific-expression-of-the-long-noncoding-rna-klhl14-as-in-mouse
#16
Sara Carmela Credendino, Nicole Lewin, Miriane de Oliveira, Swaraj Basu, Barbara D'Andrea, Elena Amendola, Luigi Di Guida, Antonio Nardone, Remo Sanges, Mario De Felice, Gabriella De Vita
lncRNAs are acquiring increasing relevance as regulators in a wide spectrum of biological processes. The extreme heterogeneity in the mechanisms of action of these molecules, however, makes them very difficult to study, especially regarding their molecular function. A novel lncRNA has been recently identified as the most enriched transcript in mouse developing thyroid. Due to its genomic localization antisense to the protein-encoding Klhl14 gene, we named it Klhl14-AS. In this paper, we highlight that mouse Klhl14-AS produces at least five splicing variants, some of which have not been previously described...
2017: International Journal of Genomics
https://www.readbyqxmd.com/read/29082129/subcellular-localization-of-the-five-members-of-the-human-steroid-5%C3%AE-reductase-family
#17
Antonella Scaglione, Linda Celeste Montemiglio, Giacomo Parisi, Italia Anna Asteriti, Renato Bruni, Gabriele Cerutti, Claudia Testi, Carmelinda Savino, Filippo Mancia, Patrizia Lavia, Beatrice Vallone
In humans the steroid 5alpha-reductase (SRD5A) family comprises five integral membrane enzymes that carry out reduction of a double bond in lipidic substrates: Δ(4)-3-keto steroids, polyprenol and trans-enoyl CoA. The best-characterized reaction is the conversion of testosterone into the more potent dihydrotestosterone carried out by SRD5A1-2. Some controversy exists on their possible nuclear or endoplasmic reticulum localization. We report the cloning and transient expression in HeLa cells of the five members of the human steroid 5α-reductase family as both N- and C-terminus green fluorescent protein tagged protein constructs...
June 2017: Biochim Open
https://www.readbyqxmd.com/read/29064414/effects-of-in-utero-exposure-to-di-n-butyl-phthalate-on-testicular-development-in-rat
#18
Tan Ma, Xiaoqin Yin, Ruitong Han, Jie Ding, Huan Zhang, Xiaodong Han, Dongmei Li
Humans are inevitably exposed to ubiquitous phthalate esters (PAEs). In utero exposure to di-n-butyl phthalate (DBP) induces abnormal development of the testis and reproductive tract in male offspring, which correspond closely with the human condition of testicular dysgenesis syndrome (TDS)-like syndrome. However, the underlying mechanisms have not been elucidated in detail. In this study, pregnant rats were orally exposed to either corn oil (controls) or DBP at three different doses by gavage during Gestational Days 12...
October 24, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29063715/comparative-aspects-of-pre-and-postnatal-development-of-the-male-reproductive-system
#19
REVIEW
Catherine A Picut, Mary K Ziejewski, D Stanislaus
This review describes pre- and postnatal development of the male reproductive system in humans and laboratory animals, and highlights species differences in the timing and control of hormonal and morphologic events. Major differences are that the fetal testis is dependent on gonadotropins in humans, but is independent of such in rats; humans have an extended postnatal quiescent period, whereas rats exhibit no quiescence; and events such as secretion by the prostate and seminal vesicles, testicular descent, and the appearance of spermatogonia are all prenatal events in humans, but are postnatal events in rats...
October 24, 2017: Birth defects research
https://www.readbyqxmd.com/read/29057334/antouka-super-%C3%A2-induced-oxidative-stress-and-reproductive-toxicity-in-male-japanese-quail-coturnix-coturnix-japonica
#20
Ngoula Ferdinand, Ngoumtsop Victor Herman, Ngouateu Kenfack Omer Bebe, Kenfack Augustave, Mutwedu Valence, Nguemmogne Tamdem Ghislaine, Tchoffo Herve, Azafack Kana Dorice, Deutcheu Sorelle, Manjeli Yacouba
BACKGROUND: Antouka Super(®) (AS), a combination of insecticide (Pirimiphos-methyl 16% and Permethrin 3%), is one of the most widely used pesticides in agriculture, public health, home and garden, with high potential for human and animal exposure. OBJECTIVE: The present study was undertaken to evaluate the effect of AS on the serum testosterone, oxidative stress biomarkers, testis histology and fertility of male Japanese quail. METHODS: Thirty-two (32) male Japanese quails twenty-eight (28) days were randomly divided into four groups: C0 (control), T1, T2 and T3, exposed daily (gavage) to 0, 37...
October 2017: Heliyon
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