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https://www.readbyqxmd.com/read/28654700/both-absolute-and-relative-quantification-of-urinary-mrna-are-useful-for-non-invasive-diagnosis-of-acute-kidney-allograft-rejection
#1
Jung-Woo Seo, Haena Moon, Se-Yun Kim, Ju-Young Moon, Kyung Hwan Jeong, Yu-Ho Lee, Yang-Gyun Kim, Tae-Won Lee, Chun-Gyoo Ihm, Chan-Duck Kim, Byung Ha Chung, Yeong Hoon Kim, Sang Ho Lee
Urinary mRNA analysis with three-gene set (18S rRNA, CD3ε, and IP-10) has been suggested as a non-invasive biomarker of acute rejection (AR) in kidney transplant recipients using quantitative real-time PCR (qPCR). Application of droplet digital PCR (ddPCR), which has been suggested to provide higher sensitivity, accuracy, and absolute quantification without standard curves, could be a useful method for the quantifying low concentration of urinary mRNA. We investigated the urinary expression of these three genes in Korean patients with kidney transplantation and also evaluated the usefulness of ddPCR...
2017: PloS One
https://www.readbyqxmd.com/read/28654181/photoelectrochemical-h2-generation-from-suboxide-tio2-nanotubes-visible-light-absorption-versus-conductivity
#2
Shiva Mohajernia, Seyedsina Hejazi, Anca Mazare, Nhat Truong Nguyen, Patrik Schmuki
In the present work we report on the key factors dictating the photo-electrochemical (PEC) performance of suboxide titania (TiOx) nanotubes. TiOx nanotubes were produced by a systematic variation of reduction heat treatments of TiO2 in Ar/H2. The properties of the TiOx tubes were investigated by electron paramagnetic resonance (EPR), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), solid-state conductivity, reflectivity measurements, photocurrent spectroscopy, and photoelectrochemical hydrogen evolution...
June 27, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28653827/black-phosphorus-field-effect-transistors-with-work-function-tunable-contacts
#3
Yuqiang Ma, Chenfei Shen, Anyi Zhang, Liang Chen, Yihang Liu, Jihan Chen, Qingzhou Liu, Zhen Li, Moh R Amer, Tom Nilges, Ahmad N Abbas, Chongwu Zhou
Black phosphorus (BP) has been recently rediscovered as an elemental two-dimensional (2D) material that shows promising results for next generation electronics and optoelectronics because of its intrinsically superior carrier mobility and small direct band gap. In various 2D field-effect transistors (FETs), the choice of metal contacts is vital to the device performance, and it is a major challenge to reach ultralow contact resistances for highly scaled 2D FETs. Here, we experimentally show the effect of a work function tunable metal contact on the device performance of BP FETs...
June 27, 2017: ACS Nano
https://www.readbyqxmd.com/read/28652197/emergence-of-drug-resistant-bacteria-at-the-hajj-a-systematic-review
#4
REVIEW
Thongpan Leangapichart, Jean-Marc Rolain, Ziad A Memish, Jaffar A Al-Tawfiq, Philippe Gautret
BACKGROUND: Hajj is the annual mass gathering of Muslims, and is a reservoir and potential source of bacterial transmission. The emergence of bacterial transmission, including multi-drug resistance (MDR) bacteria, during Hajj has not been systematically assessed. METHODS: Articles in Pubmed, Scopus, and Google scholar were identified using controlled words relating to antibiotic resistance (AR) at the Hajj from January 2002 to January 2017. Eligible studies were identified by two researchers...
June 23, 2017: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/28652170/role-of-the-androgen-receptor-in-urothelial-cancer
#5
REVIEW
Satoshi Inoue, Taichi Mizushima, Hiroshi Miyamoto
Men have had a substantially higher risk of developing bladder cancer than women. This has prompted research on androgen-mediated androgen receptor (AR) signaling in urothelial cancer. Indeed, increasing preclinical evidence indicates that AR activation correlates with the promotion of urothelial carcinogenesis and tumor outgrowth. In this article, we summarize and discuss available data suggesting the involvement of androgens and the AR pathway in the development and progression of urothelial cancer. Although precise mechanisms for the functions of AR and related signals in urothelial cells remain far from being fully understood, current observations may offer effective chemopreventive and therapeutic approaches for urothelial cancer...
June 23, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28651973/1-25-oh-2d3-disrupts-glucose-metabolism-in-prostate-cancer-cells-leading-to-a-truncation-of-the-tca-cycle-and-inhibition-of-txnip-expression
#6
Mohamed A Abu El Maaty, Hamed Alborzinia, Shehryar J Khan, Michael Büttner, Stefan Wölfl
Prostate cell metabolism exhibits distinct profiles pre- and post-malignancy. The malignant metabolic shift converts prostate cells from "citrate-producing" to "citrate-oxidizing" cells, thereby enhancing glucose metabolism, a phenotype that contrasts classical tumoral Warburg metabolism. An on-line biosensor chip system (BIONAS 2500) was used to monitor metabolic changes (glycolysis and respiration) in response to the putative anti-cancer nutraceutical 1,25-dihydroxyvitamin D3 [1,25(OH)2D3], in different prostate cancer (PCa) cell lines (LNCaP, VCaP, DU145 and PC3)...
June 23, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28651212/ar-c-106t-gene-polymorphism-and-diabetic-nephropathy-in-the-eastern-asians-with-t2dm-a-meta-analysis-including-2120-subjects
#7
Yan-Yan Li, Hui Wang, Xin-Xing Yang, Hong-Yu Geng, Ge Gong, Xin-Zheng Lu
BACKGROUND: Aldose reductase (AR) gene C-106T polymorphism may be associated with diabetic nephropathy (DN) susceptibility, but the results of individual studies remain controversial. OBJECTIVE AND METHODS: To explore the relationship between AR gene C-106T gene polymorphism and DN in the Eastern Asians with type 2 diabetes mellitus (T2DM) population, we conducted a meta-analysis of 2120 participants from 5 studies. Pooled odds ratio (ORs) and the corresponding 95% confidence interval (95% CI) were evaluated by either a fixed or random-effects models...
June 15, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28650834/angle-2dpca-a-new-formulation-for-2dpca
#8
Quanxue Gao, Lan Ma, Yang Liu, Xinbo Gao, Feiping Nie
2-D principal component analysis (2DPCA), which employs squared F-norm as the distance metric, has been widely used in dimensionality reduction for data representation and classification. It, however, is commonly known that squared F-norm is very sensitivity to outliers. To handle this problem, we present a novel formulation for 2DPCA, namely Angle-2DPCA. It employs F-norm as the distance metric and takes into consideration the relationship between reconstruction error and variance in the objective function...
June 22, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28649841/elucidating-the-mechanisms-driving-the-ageing-of-porous-hollow-ptni-c-nanoparticles-by-the-means-of-coads-stripping
#9
Tristan Asset, Raphael Chattot, Jakub Drnec, Pierre Bordet, Nathalie Job, Frédéric Maillard, Laetitia Dubau
The oxygen reduction reaction (ORR) activity of Pt-alloy electrocatalysts depends on (i) strain/ligand effects induced by the non-noble metal (3d transition metal or a rare-Earth ele-ment) alloyed to Pt, (ii) the orientation of the catalytic surfaces and (iii) the density of struc-tural defects (ex. vacancies, voids, interconnections). These structural defects influence the 'generalized' coordination number of Pt atoms, the Pt-alloy lattice parameter and thus the adsorption strength of the ORR intermediates (O*, OH*, OOH*)...
June 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28649598/an-analysis-of-two-common-reference-points-for-eegs
#10
S López, A Gross, S Yang, M Golmohammadi, I Obeid, J Picone
Clinical electroencephalographic (EEG) data varies significantly depending on a number of operational conditions (e.g., the type and placement of electrodes, the type of electrical grounding used). This investigation explores the statistical differences present in two different referential montages: Linked Ear (LE) and Averaged Reference (AR). Each of these accounts for approximately 45% of the data in the TUH EEG Corpus. In this study, we explore the impact this variability has on machine learning performance...
December 2016: ... IEEE Signal Processing in Medicine and Biology Symposium. IEEE Signal Processing in Medicine and Biology Symposium
https://www.readbyqxmd.com/read/28648634/impaired-ovarian-response-to-exogenous-gonadotropins-in-female-rat-offspring-born-to-mothers-perinatally-exposed-to-bisphenol-a
#11
C G Santamaría, H A Rodriguez, J E Abud, O E Rivera, M Muñoz-de-Toro, E H Luque
The ovary is sensitive to disruption by the environmental estrogen Bisphenol A (BPA). Our aim was to investigate whether perinatal exposure to BPA (50μg/kg.day), orally administered, affects ovarian response to exogenous gonadotrophins (PMSG or PMSG+hCG) in prepubertal female offspring. An altered response to gonadotrophins was observed in BPA-exposed rats. Increased proportion of antral follicles, altered levels of ovarian steroidogenic enzymes, gonadotropin receptors, AR and ERβ were observed in PMSG group...
June 22, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28648553/escitalopram-plasma-levels-and-antidepressant-response
#12
Vincenzo Florio, Stefano Porcelli, Alois Saria, Alessandro Serretti, Andreas Conca
Major Depression Disorder (MDD) has a highly variable treatment response due to the large inter-individual variation in the pharmacokinetics and pharmacodynamics of drug treatments. In detail the correlation between plasma level and efficacy has been much debated. Among first-line drugs for MDD, one of the most used is escitalopram. In the present study we investigated the association between serum concentration of escitalopram (SCE) and antidepressant response (AR). 70 MDD patients treated with escitalopram monotherapy were recruited and followed for three months...
June 22, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28648378/steroidogenic-metabolism-of-galeterone-reveals-a-diversity-of-biochemical-activities
#13
Mohammad Alyamani, Zhenfei Li, Michael Berk, Jianneng Li, Jingjie Tang, Sunil Upadhyay, Richard J Auchus, Nima Sharifi
Galeterone is a steroidal CYP17A1 inhibitor, androgen receptor (AR) antagonist, and AR degrader, under evaluation in a phase III clinical trial for castration-resistant prostate cancer (CRPC). The A/B steroid ring (Δ(5),3β-hydroxyl) structure of galeterone is identical to that of cholesterol, which makes endogenous steroids with the same structure (e.g., dehydroepiandrosterone and pregnenolone) substrates for the enzyme 3β-hydroxysteroid dehydrogenase (3βHSD). We found that galeterone is metabolized by 3βHSD to Δ(4)-galeterone (D4G), which is further converted by steroid-5α-reductase (SRD5A) to 3-keto-5α-galeterone (5αG), 3α-OH-5α-galeterone, and 3β-OH-5α-galeterone; in vivo it is also converted to the three corresponding 5β-reduced metabolites...
June 19, 2017: Cell Chemical Biology
https://www.readbyqxmd.com/read/28645930/genomic-and-non-genomic-effects-of-androgens-in-the-cardiovascular-system-clinical-implications
#14
REVIEW
Angela K Lucas-Herald, Rheure Alves-Lopes, Augusto C Montezano, S Faisal Ahmed, Rhian M Touyz
The principle steroidal androgens are testosterone and its metabolite 5α-dihydrotestosterone (DHT), which is converted from testosterone by the enzyme 5α-reductase. Through the classic pathway with androgens crossing the plasma membrane and binding to the androgen receptor (AR) or via mechanisms independent of the ligand-dependent transactivation function of nuclear receptors, testosterone induces genomic and non-genomic effects respectively. AR is widely distributed in several tissues, including vascular endothelial and smooth muscle cells...
July 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28645634/hormonal-behavior-correlates-with-follicular-recruitment-at-mid-gestation-in-the-south-american-plains-vizcacha-lagostomus-maximus-rodentia-caviomorpha
#15
Nicolas Alejandro Fraunhoffer, Federico Jensen, Noelia Leopardo, Pablo Ignacio Felipe Inserra, Analía Meilerman Abuelafia, María Beatriz Espinosa, Santiago Elías Charif, Verónica Berta Dorfman, Alfredo Daniel Vitullo
In mammals, hormonal regulation during gestation is crucial for embryo implantation and pregnancy success. This regulation is controlled through the level of progesterone (P4) that blocks the activity of the hypothalamic-hypophyseal-gonadal (HHG) axis. Previous studies in the pregnant South American plains vizcacha, Lagostomus maximus, have shown that the HHG axis activates around mid-gestation, promoting pre-ovulatory follicle formation. However, the characterization of the hormonal dynamics throughout gestation and its ovarian correlation has not been studied in depth...
June 20, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28645579/anti-androgenic-mechanisms-of-bisphenol-a-involve-androgen-receptor-signaling-pathway
#16
Hui Wang, Zhen Ding, Qiao-Mei Shi, Xing Ge, Heng-Xue Wang, Meng-Xue Li, Gang Chen, Qi Wang, Qiang Ju, Jin-Peng Zhang, Mei-Rong Zhang, Li-Chun Xu
We have shown Bisphenol A (BPA) acts as an androgen receptor (AR) antagonist in the previous study. However, the mechanisms underlying anti-androgenic effects of BPA remain unclear. The objective of this study was to explore whether the AR signaling was involved in AR antagonism of BPA. The Cell Counting Kit-8 (CCK-8) assay and Real-Time Cell Analysis (RTCA) iCELLigence system were applied to analyze the mouse Sertoli cell TM4 proliferation. The mammalian two-hybrid assays were performed to investigate the effects of BPA on the AR amino- and carboxyl-terminal regions (N/C) interaction and the interactions of the AR with steroid receptor coactivator-1 (SRC-1), co-repressors including silencing mediator for thyroid hormone receptors (SMRT) and nuclear receptor co-repressor (NCoR)...
June 20, 2017: Toxicology
https://www.readbyqxmd.com/read/28645209/genome-wide-mapping-of-in-vivo-er%C3%AE-binding-sites-in-male-mouse-efferent-ductules
#17
Guangxin Yao, Shuanggang Hu, Lu Yu, Yanfei Ru, Charlie Degui Chen, Qiang Liu, Yonglian Zhang
As an important nuclear hormone receptor, estrogen receptor alpha (ERα), which is encoded by Esr1 gene, regulates the expression of hundreds of genes in a stimulus-specific, temporal and tissue-specific fashion, mainly by binding to specific DNA sequences-estrogen response elements (EREs). As an important estrogen target tissue in males, the function of the efferent ductules relies on the presence of the ERα protein, but the underlying regulatory mechanisms are poorly illustrated. In this study, genome-wide ERα-binding sites in mouse efferent ductules were mapped by ChIP-seq...
June 22, 2017: Endocrinology
https://www.readbyqxmd.com/read/28644758/an-independent-shopping-experience-for-wheelchair-users-through-augmented-reality-and-rfid
#18
Zulqarnain Rashid, Rafael Pous, Christopher S Norrie
People with physical and mobility impairments continue to struggle to attain independence in the performance of routine activities and tasks. For example, browsing in a store and interacting with products located beyond an arm's length may be impossible without the enabling intervention of a human assistant. This research article describes a study undertaken to design, develop, and evaluate potential interaction methods for motor-impaired individuals, specifically those who use wheelchairs. Our study includes a user-centered approach, and a categorization of wheelchair users based upon the severity of their disability and their individual needs...
June 23, 2017: Assistive Technology: the Official Journal of RESNA
https://www.readbyqxmd.com/read/28644649/role-of-a-neighbor-ion-in-the-fragmentation-dynamics-of-covalent-molecules
#19
A Méry, A N Agnihotri, J Douady, X Fléchard, B Gervais, S Guillous, W Iskandar, E Jacquet, J Matsumoto, J Rangama, F Ropars, C P Safvan, H Shiromaru, D Zanuttini, A Cassimi
Fragmentation of molecular nitrogen dimers (N_{2})_{2} induced by collision with low energy 90 keV Ar^{9+} ions is studied to evidence the influence of a molecular environment on the fragmentation dynamics of N_{2} cations. Following the capture of three or four electrons from the dimer, the three-body N_{2}^{+}+N^{m+}+N^{n+} [with (m,n)=(1,1) or (1, 2)] fragmentation channels provide clean experimental cases where molecular fragmentation may occur in the presence of a neighbor molecular cation. The effect of the environment on the fragmentation dynamics within the dimer is investigated through the comparison of the kinetic energy release (KER) spectra for these three-body channels and for isolated N_{2}^{(m+n)+} monomer cations...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28644440/lncrna-sarcc-suppresses-renal-cell-carcinoma-rcc-progression-via-altering-the-androgen-receptor-ar-mirna-143-3p-signals
#20
Wei Zhai, Yin Sun, Changcheng Guo, Guanghui Hu, Mingchao Wang, Jiayi Zheng, WanYing Lin, Qingbo Huang, Gonghui Li, Junhua Zheng, Chawnshang Chang
While the androgen receptor (AR) might promote renal cell carcinoma (RCC) initiation and progression, the molecular mechanisms involved remain largely unclear. Here, we discovered the novel LncRNA-SARCC, which was suppressed and associated with better prognosis in RCC. Preclinical studies using multiple RCC cells and in vivo mouse model indicated that LncRNA-SARCC could attenuate RCC cell invasion, migration and proliferation in vitro and in vivo. Mechanistically, LncRNA-SARCC bound and destabilized AR protein with an inhibition of AR function, which led to transcriptionally de-repress miR-143-3p expression, thus inhibition of its downstream signals including AKT, MMP-13, K-RAS and P-ERK...
June 23, 2017: Cell Death and Differentiation
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