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https://www.readbyqxmd.com/read/28544830/assessment-of-contributors-of-aortopathy-and-subclinical-left-ventricular-dysfunction-in-normally-functioning-bicuspid-aortic-valves
#1
Kamil Tuluce, Selcen Yakar Tuluce, Ersin Cagri Simsek, Serdar Bayata, Cem Nazli
BACKGROUND: Left ventricular (LV) function and the dimensions of aortic valves from normally functioning bicuspid aortic valve (BAV) patients were compared with those of healthy control patients. A comparison between patients with antero-posterior BAV (BAV-AP) or right-left BAV (BAV-RL) was also performed, and the determinants of aortopathy and LV function were investigated. METHODS: Sixty-eight patients with aortic velocities <2 m/s and trivial or mild aortic regurgitation were included in the study...
January 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28544540/serum-adrenomedullin-and-urinary-thromboxane-b2-help-early-categorizing-acute-kidney-injury-in-de-compensated-cirrhotic-patients-a-prospective-cohort-study
#2
Chih-Wei Liu, Chia-Chang Huang, Hung-Cheng Tsai, Yen-Bo Su, Shiang-Fen Huang, Kuei-Chuan Lee, Yun-Cheng Hsieh, Tzu-Hao Li, Chang-Youh Tsai, Lee-Won Chong, Shuo-Ming Ou, Ying-Ying Yang, Wen-Chien Fan, Ming-Chih Hou, Han-Chieh Lin, Shou-Dong Lee
AIMS: Increases in the systemic vasodilator adrenomedullin and the renal vasoconstrictors thromboxane A2 (TXA2 ) in cirrhotic patients are pathogenic factors for the development of functional acute-kidney-injury, including pre-renal azotemia (PRA) and hepatorenal syndrome (HRS), which is associated with high mortality. This study aims to find biomarkers which can diagnose HRS in early stage for treating it as soon as possible. METHODS: Acute decompensated cirrhotic patients who had been admitted to hospital were enrolled in this prospective cohort study...
May 20, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/28544445/morphology-and-structure-engineering-in-nanofiber-reactor-tubular-hierarchical-integrated-networks-composed-of-dual-phase-octahedral-comn2-o4-carbon-nanofibers-for-water-oxidation
#3
Han Zhu, Danni Yu, Songge Zhang, Jiawei Chen, Wenbo Wu, Meng Wan, Lina Wang, Ming Zhang, Mingliang Du
1D hollow nanostructures combine the advantages of enhanced surface-to-volume ratio, short transport lengths, and efficient 1D electron transport, which can provide more design ideas for the preparation of highly active oxygen evolution (OER) electrocatalysts. A unique architecture of dual-phase octahedral CoMn2 O4 /carbon hollow nanofibers has been prepared via a two-step heat-treatment process including preoxidation treatment and Ostwald ripening process. The hollow and porous structures provide interior void spaces, large exposed surfaces, and high contact areas between the nanofibers and electrolyte and the morphology can be engineered by adjusting the heating conditions...
May 22, 2017: Small
https://www.readbyqxmd.com/read/28544332/fibroblast-growth-factor-2-protects-against-renal-ischaemia-reperfusion-injury-by-attenuating-mitochondrial-damage-and-proinflammatory-signalling
#4
Xiao-Hua Tan, Xiao-Meng Zheng, Li-Xia Yu, Jian He, Hong-Mei Zhu, Xiu-Ping Ge, Xiao-Li Ren, Fa-Qing Ye, Saverio Bellusci, Jian Xiao, Xiao-Kun Li, Jin-San Zhang
Ischaemia-reperfusion injury (I/RI) is a common cause of acute kidney injury (AKI). The molecular basis underlying I/RI-induced renal pathogenesis and measures to prevent or reverse this pathologic process remains to be resolved. Basic fibroblast growth factor (FGF2) is reported to have protective roles of myocardial infarction as well as in several other I/R related disorders. Herein we present evidence that FGF2 exhibits robust protective effect against renal histological and functional damages in a rat I/RI model...
May 24, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28543866/testicular-structure-and-seminal-pathway-in-the-yellowtail-tetra-astyanax-altiparanae-characiforms-characidae
#5
D H de Siqueira-Silva, A P Dos Santos-Silva, C Bashiyo-Silva, M S Rodrigues, C A Vicentini, A Ninhaus-Silveira, R Veríssimo-Silveira
This study aimed to describe testicular and its main ducts structure in the yellowtail tetra Astyanax altiparanae, contributing to the knowledge of the region in which semen is produced, storage and released, focusing mainly on the dynamic of germinal epithelium and Sertoli cells during germ cell maturation. Ten sexually mature male A. altiparanae had their testes processed according to the routine protocols to optical microscopy. Moreover, spermatic ducts and tubular compartment of the testes of three specimens were perfused with vinyl resin for gross anatomy and scanning electron microscopy...
May 22, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28543094/mechanism-of-graphene-induced-cytotoxicity-role-of-endonucleases
#6
Tariq Fahmi, La Donna Branch, Zeid A Nima, Dae Song Jang, Alena V Savenka, Alexandru S Biris, Alexei G Basnakian
Graphene, a crystalline allotrope or carbon, presents numerous useful properties; however, its toxicity is yet to be determined. One of the most dramatic and irreversible toxic abilities of carbon nanomaterials is the induction of DNA fragmentation produced by endogenous cellular endonucleases. This study demonstrated that pristine graphene exposed to cultured kidney tubular epithelial cells is capable of inducing DNA fragmentation measured by terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay, which is usually associated with cell death...
May 24, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28542560/adiponectin-attenuates-high-glucose-induced-apoptosis-through-the-ampk-p38-mapk-signaling-pathway-in-nrk-52e-cells
#7
Yuanyuan Wang, Juan Zhang, Lian Zhang, Ping Gao, Xiaoyan Wu
Excessive apoptosis of proximal tubule cell is closely related to the development of diabetes. Recent evidence suggests that adiponectin (ADPN) protects cells from high glucose induced apoptosis. However, the precise mechanisms remain poorly understood. We sought to investigate the role of p38 mitogen-activated protein kinase (p38 MAPK) and AMP activated protein kinase (AMPK) in anti-apoptotic of adiponectin under high glucose condition in rat tubular NRK-52E cells. Cells were cultured in constant and oscillating high glucose media with or without recombinant rat adiponectin for 48 h...
2017: PloS One
https://www.readbyqxmd.com/read/28542433/beneficial-effect-of-combined-treatment-with-octreotide-and-pasireotide-in-pck-rats-an-orthologous-model-of-human-autosomal-recessive-polycystic-kidney-disease
#8
Masanori Kugita, Kazuhiro Nishii, Tamio Yamaguchi, Atsushi Suzuki, Yukio Yuzawa, Shigeo Horie, Eiji Higashihara, Shizuko Nagao
Increased intracellular cyclic AMP (cAMP) in renal tubular epithelia accelerates the progression of polycystic kidney disease (PKD). Thus, decreasing cAMP levels by an adenylyl cyclase inhibitory G protein activator is considered to be an effective approach in ameliorating PKD. In fact, pasireotide (PAS) was effective in reducing disease progression in animal models of PKD. However, hyperglycemia caused by the administration of PAS is an adverse effect in its clinical use. Whereas, co-administration of octreotide (OCT) with PAS did not increase serum glucose in normal rats...
2017: PloS One
https://www.readbyqxmd.com/read/28542370/upregulation-of-tlr4-via-pkc-activation-contributes-to-impaired-wound-healing-in-high-glucose-treated-kidney-proximal-tubular-cells
#9
Jianping Peng, Hang Zheng, Xia Wang, Zhixiang Cheng
Acute kidney injury (AKI) leads to a worse prognosis in diabetic patients compared with prognoses in non-diabetic patients, but whether and how diabetes affects kidney repair after AKI remains unknown. Here, we used scratch-wound healing and transwell migration models to examine whether and how wound healing is affected by high glucose levels in cultured kidney proximal tubular cells (RPTC). The results show that scratch-wound healing and transwell migration were significantly slower in high-glucose-treated kidney tubular cells (30 mM glucose) than in low-glucose-treated cells (5...
2017: PloS One
https://www.readbyqxmd.com/read/28542220/expression-of-receptor-type-protein-tyrosine-phosphatase-in-developing-and-adult-renal-vasculature
#10
Keiko Takahashi, Rachel Kim, Colette Lauhan, Yuna Park, Nghiep G Nguyen, Dietmar Vestweber, Melissa G Dominguez, David M Valenzuela, Andrew J Murphy, George D Yancopoulos, Nicholas W Gale, Takamune Takahashi
Renal vascular development is a coordinated process that requires ordered endothelial cell proliferation, migration, intercellular adhesion, and morphogenesis. In recent decades, studies have defined the pivotal role of endothelial receptor tyrosine kinases (RPTKs) in the development and maintenance of renal vasculature. However, the expression and the role of receptor tyrosine phosphatases (RPTPs) in renal endothelium are poorly understood, though coupled and counterbalancing roles of RPTKs and RPTPs are well defined in other systems...
2017: PloS One
https://www.readbyqxmd.com/read/28541416/serial-block-face-sem-visualization-of-unusual-plant-nuclear-tubular-extensions-in-a-carnivorous-plant-utricularia-lentibulariaceae
#11
Bartosz J Plachno, Piotr Swiatek, Richard W Jobson, Karol Malota, Wojciech Brutkowski
Background and Aims: In Utricularia nelumbifolia , the nuclei of placental nutritive tissue possess unusually shaped projections not known to occur in any other flowering plant. The main aim of the study was to document the morphology and ultrastructure of these unusual nuclei. In addition, the literature was searched to find examples of nuclear tubular projections in other plant groups, and the nuclei of closely related species of Utricularia (i.e. sects Iperua , Orchidioides , Foliosa and Utricularia ) were examined...
May 24, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28541268/scrotal-ultrasonic-features-of-congenital-bilateral-absence-of-vas-deferens
#12
Jun Liu, Zhiqian Wang, MingYang Zhou, Min Li, Weiwei Zhan
OBJECTIVE: This article discusses scrotal ultrasonic features of patients with a congenital bilateral absence of the vas deferens (CBAVD). METHODS: Thirty-six patients with CBAVD were examined to obtain image characteristics of the bilateral testicle and epididymis by ultrasound. Each patient received a pathological examination of the sperm by percutaneous epididymal biopsy. RESULTS: Scrotal ultrasonic features were as follows: (1) testicular volumes were normal in all the 36 patients; (2) 21% (15/72) of the heads of epididymis, 67% (48/72) of the heads and bodies of epididymis, and 12% (9/72) of the heads, bodies, and tails of epididymis could be shown in the 72 epididymides of the 36 patients; (3) cystic or tubular dilation of the epididymis was obvious in all 72 abnormal epididymides; and (4) bilateral vas deferens could not be found in these patients...
June 2017: Ultrasound Quarterly
https://www.readbyqxmd.com/read/28540855/interest-of-the-combined-measurement-of-selected-urinary-proteins-in-the-diagnosis-approach-in-nephrology
#13
Jean-Philippe Bastard, Soraya Fellahi, François-Xavier Lescure, Jacqueline Capeau, Pierre Ronco, Emmanuelle Plaisier
Determination of the protein composition of urine is a non-invasive method helping to diagnose renal lesions and evaluate therapeutic interventions. We present here five observations that highlight the performance and relevance of urine protein analysis combining selected glomerular and tubular protein measurements. Total urine protein level and measurements of urinary IgG, albumin, transferrin alpha-1 microglobulin and retinol binding protein were performed on a urine sample by immunonephelometry. The results were normalized for urine creatinine concentration and integrated in the MDI interpretation software that provides a "urine protein profile" (UPP)...
June 1, 2017: Annales de Biologie Clinique
https://www.readbyqxmd.com/read/28540472/modelling-malpighian-tubule-crystals-within-the-predatory-soil-mite-pergamasus-longicornis-mesostigmata-parasitidae
#14
Clive E Bowman
The occurrence of refractive crystals (aka guanine) is characterised in the Malpighian tubules of the free-living predatory parasitiform soil mite Pergamasus longicornis (Berlese) from a temporal series of histological sections during and after feeding on larval dipteran prey. The tubular system behaves as a single uniform entity during digestion. Malpighian mechanisms are not the 'concentrative' mechanism sought for the early stasis in gut size during the second later phase of prey feeding. Nor are Malpighian changes associated with the time of 'anal dabbing' during feeding...
May 24, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28540451/exogenous-cgrp-upregulates-profibrogenic-growth-factors-through-pkc-jnk-signaling-pathway-in-kidney-proximal-tubular-cells
#15
Sang Pil Yoon, Jinu Kim
Kidney denervation prevents the development of tubulointerstitial fibrosis, but the neuropeptide calcitonin gene-related peptide (CGRP) in the denervated kidneys restores the fibrotic feature through the upregulation of profibrogenic growth factors. CGRP is involved in aggravation of inflammation by increasing the number of circulating cells and chemotactic factors. However, it is not clear how CGRP contributes to the upregulation of profibrogenic factors during fibrogenesis. In both human and pig kidney proximal tubular cell lines, administration of 1 nM CGRP significantly increased the levels of transforming growth factor-β1 (TGF-β1) production and connective tissue growth factor (CTGF) expression at 6 and 24 h after the administration...
May 24, 2017: Cell Biology and Toxicology
https://www.readbyqxmd.com/read/28540295/relaxin-attenuates-contrast-induced-human-proximal-tubular-epithelial-cell-apoptosis-by-activation-of-the-pi3k-akt-signaling-pathway-in-vitro
#16
Xiang-Cheng Xie, Yizhi Cao, Xiu Yang, Qun-Hong Xu, Wei Wei, Ming Wang
Background. Contrast-induced acute kidney injury (CI-AKI) is one of the main causes of iatrogenic acute kidney injury (AKI); however, therapeutic strategies for AKI remain limited. This study aims to explore the effect of relaxin (RLX) on contrast-induced HK-2 apoptosis and its underlying mechanisms. Methods. Renal tubular epithelial cells (HK-2) were incubated either with or without ioversol, human H2 relaxin, and LY294002 (the inhibitor of the PI3K/Akt signal pathway). Cell viability was evaluated with a CCK-8 assay...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28540205/clinicopathological-spectrum-of-snake-bite-induced-acute-kidney-injury-from-india
#17
Sanjay Vikrant, Ajay Jaryal, Anupam Parashar
AIM: To study the clinico-pathological spectrum of snake bite-induced acute kidney injury (AKI). METHODS: A retrospective study of patients admitted at Indira Gandhi Medical College Hospital, Shimla with snake bite-induced AKI from July 2003 to June 2016. Medical records were evaluated for patient's information on demographic, clinical characteristics, complications and outcome. Outcomes of duration of hospital stay, requirement for intensive care unit support, treatment with dialysis, survival and mortality were analyzed...
May 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28539339/mif-2-d-dt-enhances-proximal-tubular-cell-regeneration-through-slpi-and-atf4-dependent-mechanisms
#18
Akinobu Ochi, Dong Chen, Wibke Schulte, Lin Leng, Nickolas Gilbert Moeckel, Marta Piecychna, Luisa Averdunk, Christian Stoppe, Richard Bucala, Gilbert W Moeckel
Macrophage migration inhibitory factor (MIF) is a cytokine with pleiotropic actions that is produced by several organs and cell types. Depending on the target cell and the inflammatory context, MIF can engage its two component receptor complex CD74 and CD44, and the chemokine receptors CXCR2/4. MIF is constitutively expressed in renal proximal tubular cells, stored in intracellular preformed pools and is released at a low rate. Recently a second MIF-like protein (i.e. MIF-2/D-DT) has been characterized in mammals...
May 24, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28539044/the-effect-of-resveratrol-on-modulation-of-endothelial-cells-and-macrophages-for-rapid-vascular-regeneration-from-electrospun-poly-%C3%AE%C2%B5-caprolactone-scaffolds
#19
Zhihong Wang, Yifan Wu, Jianing Wang, Chuangnian Zhang, Hongyu Yan, Meifeng Zhu, Kai Wang, Chen Li, Qingbo Xu, Deling Kong
Rapid endothelialization is one key factor that determines the success of small diameter vascular grafts as an artery substitute in the treatment of cardiovascular disease. Aimed to facilitate vascular regeneration, we developed a vascular scaffold loaded with resveratrol, which is a natural compound extracted from plants and showed multifaceted effects in cardiovascular protection. The tubular poly (ε-caprolactone) (PCL) scaffold was prepared by electrospinning with resveratrol in the PCL solution. In vitro assay demonstrated that resveratrol could be released from the scaffolds in a sustained and controlled manner...
May 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28536361/the-protective-effects-of-p-coumaric-acid-on-acute-liver-and-kidney-damages-induced-by-cisplatin
#20
Fazile Nur Ekinci Akdemir, Mevlüt Albayrak, Muhammet Çalik, Yasin Bayir, İlhami Gülçin
In this study, we aimed to investigate the effects of p-Coumaric acid (PCA) on cisplatin (CIS)-induced hepatotoxicity and nephrotoxicity in Wistar adult rats for 24 h compared to untreated control groups. In this experiment, 40 Wistar adult rats were utilized and divided randomly into five groups. After 24 h of CIS administration, liver and kidneys were harvested and assessed by H&E staining. Also, markers for oxidative stress and antioxidants were analyzed in theses tissues. Compared to the control group, accumulation of malondialdehyde was increased in groups treated CIS, whereas superoxide dismutase activities and glutathione levels were distinctly diminished in this group...
April 28, 2017: Biomedicines
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