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https://www.readbyqxmd.com/read/29029361/the-mechanism-of-attenuation-of-epithelial-mesenchymal-transition-by-a-phosphodiesterase-5-inhibitor-via-renal-klotho-expression
#1
Seung Tae Han, Jae Seok Kim, Jun Young Lee, Min Keun Kim, Jin Sae Yoo, Byoung Geun Han, Seung Ok Choi, Jae Won Yang
OBJECTIVES: Phosphodiesterase-5 (PDE-5) inhibitors induces vasodilation in several organs by blocking cyclic GMP (guanosine monophosphate) degradation. However, the existence of alternative mechanism of action in case of an impaired nitric oxide (NO) system remains controversial. Previous studies suggested that decreased NO bioavailability may result in the down-regulation of klotho expression, but the relationship between klotho and NO remains obscure. Therefore, we investigated whether a PDE-5 inhibitor could preserve epithelial mesenchymal transition (EMT) and relationship exists between the NO and renal klotho expression...
October 13, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29025027/maternal-melatonin-or-agomelatine-therapy-prevents-programmed-hypertension-in-male-offspring-of-mother-exposed-to-continuous-light
#2
You-Lin Tain, Yu-Ju Lin, Julie Y H Chan, Chien-Te Lee, Chien-Ning Hsu
Hypertension can originate from early-life insults, whereas maternal melatonin therapy can be protective in a variety of models of programmed hypertension. We hypothesize that melatonin or melatonin receptor agonist agomelatine can prevent programmed hypertension in adult offspring induced by maternal exposure to continuous light. Female Sprague-Dawley pregnant rats randomly divided into four groups: controls, rats exposed to continuous light, exposed to continuous light plus treated with agomelatine (50mg/day i...
September 9, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29024711/fluoride-potentiates-tubulointerstitial-nephropathy-caused-by-unilateral-ureteral-obstruction
#3
Takamasa Kido, Masashi Tsunoda, Chiemi Sugaya, Hiroshi Hano, Hiroyuki Yanagisawa
The contamination of ground water by fluoride has been reported worldwide. Most fluoride (approximately 70%) is filtered by the kidneys; humans or experimental animals with renal damage therefore may be more affected by fluoride exposure than those with normal kidney function. Tubulointerstitial fibrosis, which involves macrophage-promoted extracellular matrix production and myofibroblast migration, can be induced in rats by unilateral ureteral obstruction (UUO). We examined the effects of fluoride exposure on tubulointerstitial fibrosis in the obstructed kidney of UUO rats...
October 9, 2017: Toxicology
https://www.readbyqxmd.com/read/29021227/physiological-regulation-of-the-epithelial-na-channel-by-casein-kinase-ii
#4
Jonathan M Berman, Elena Mironova, James D Stockand
The Epithelial Na+ Channel, ENaC, is the final arbiter of sodium excretion in the kidneys. As such, discretionary control of ENaC by hormones is critical to the fine-tuning of electrolyte and water excretion and consequently, blood pressure. Casein kinase 2 (CK2) phosphorylates ENaC. Phosphorylation by CK2 is necessary for normal ENaC activity. We tested the physiological importance of CK2 regulation of ENaC as the degree to which ENaC activity is dependent on CK2 phosphorylation in the living organism is unknown...
October 11, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29019956/anti-diabetic-potential-of-ocimum-gratissimum-leaf-fractions-in-fortified-diet-fed-streptozotocin-treated-rat-model-of-type-2-diabetes
#5
Stanley I R Okoduwa, Isamila A Umar, Dorcas B James, Hajiya M Inuwa
Background: Ocimum gratissimum (OG) is used in the traditional management of diabetes in Nigeria. This study investigated the anti-diabetic potential of OG leaf fractions (OGLF) in a rat model of Type-2 diabetes (T2D). Method: Methanol crude extract of OG leaf was fractionated with solvents of increasing order of polarity (n-hexane, chloroform, ethyl-acetate, n-butanol and water). The anti-diabetic potential of the fractions was evaluated in vivo. T2D was induced in Albino Wistar rats and treated with OGLF...
October 11, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28994541/-effect-of-chinese-herb-chicory-extract-on-expression-of-renal-transporter-glut9-in-rats-with-hyperuricemia
#6
Yu Wang, Zhi-Jian Lin, An-Zheng Nie, Li-Yu Li, Bing Zhang
Sixty SD male rats were randomly divided into normal group, model group, benzbromarone group(20 mg•kg⁻¹•d⁻¹), chicory extract high dose, middle dose and low dose groups (5, 7.5, 10 g•kg⁻¹•d⁻¹). The rats in normal group were given with water, and the rats in other groups were given with 10% fructose solution to establish hyperuricemia models. All the rats were sacrificed on the 42th day. Then their serum uric acid(SUA), serum creatinine(CRE), urea nitrogen(BUN) and urinary uric acid(UUA) levels were detected to calculate the clearance rate of uric acid in kidney(CUA)...
March 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28992470/the-potential-effects-of-efavirenz-on-oreochromis-mossambicus-after-acute-exposure
#7
L Robson, I E J Barnhoorn, G M Wagenaar
Antiretroviral drugs (ARVs) are hazardous therapeutic pharmaceuticals present in South African surface water. Efavirenz is an ARV commonly used in human immunodeficiency virus (HIV) treatment in South Africa. Although little is known about the toxic effects of efavirenz on fish health, threats of toxicity to the aquatic environment have been reported. Oreochromis mossambicus were exposed under controlled conditions to environmentally-relevant efavirenz concentrations (10.3ng/l) as measured in rivers that flow into the Nandoni Dam in the Vhembe District, South Africa...
October 2, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28992067/the-uremic-toxin-indoxyl-sulfate-interferes-with-iron-metabolism-by-regulating-hepcidin-in-chronic-kidney-disease
#8
Hirofumi Hamano, Yasumasa Ikeda, Hiroaki Watanabe, Yuya Horinouchi, Yuki Izawa-Ishizawa, Masaki Imanishi, Yoshito Zamami, Kenshi Takechi, Licht Miyamoto, Keisuke Ishizawa, Koichiro Tsuchiya, Toshiaki Tamaki
Background: Hepcidin secreted by hepatocytes is a key regulator of iron metabolism throughout the body. Hepcidin concentrations are increased in chronic kidney disease (CKD), contributing to abnormalities in iron metabolism. Levels of indoxyl sulfate (IS), a uremic toxin, are also elevated in CKD. However, the effect of IS accumulation on iron metabolism remains unclear. Methods: We used HepG2 cells to determine the mechanism by which IS regulates hepcidin concentrations...
August 23, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28986933/liquid-tissue-surrogates-for-x-ray-and-ct-phantom-studies
#9
Paul F FitzGerald, Robert E Colborn, Peter M Edic, Jack W Lambert, Peter J Bonitatibus, Benjamin M Yeh
PURPOSE: To develop a simple method for producing liquid-tissue-surrogate (LTS) materials that accurately represent human soft tissues in terms of density and X-ray attenuation coefficient. METHODS AND MATERIALS: We evaluated hypothetical mixtures of water, glycerol, butanol, methanol, sodium chloride, and potassium nitrate; these mixtures were intended to emulate human adipose, blood, brain, kidney, liver, muscle, pancreas, and skin. We compared the hypothetical densities, effective atomic numbers (Zeff ), and calculated discrete-energy CT attenuation (Hounsfield Units (HU)) of the proposed materials with those of human tissue elemental composition as specified in International Commission on Radiation Units (ICRU) Report 46...
October 7, 2017: Medical Physics
https://www.readbyqxmd.com/read/28985241/short-term-high-salt-diet-increases-corin-level-to-regulate-the-salt-water-balance-in-humans-and-rodents
#10
Jiao Zhang, Yanjun Yin, Lili Chen, Chao Chu, Yang Wang, Yongbo Lv, Ming He, Marcy Martin, Po-Hsun Huang, Jian-Jun Mu, John Y-J Shyy, Zu-Yi Yuan
Background: Dietary sodium and potassium affect the fluctuation in blood pressure and renal function. Corin, with its enzymatic activity to convert pro-atrial natriuretic peptide (pro-ANP) to biologically active ANP, regulates blood pressure, cardiac and renal functions. We investigated whether corin expression responds to a high-salt (HS) diet to regulate salt and water balance. Methods and results: Forty-two volunteers followed 3 sequential diets for 7 days each: a low-salt (LS) diet (3...
August 8, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28985133/organ-doses-associated-with-partial-body-irradiation-with-2-5-bone-marrow-sparing-of-the-non-human-primate-a-retrospective-study
#11
C Prado, T J MacVittie, A W Bennett, A Kazi, A M Farese, K Prado
A partial-body irradiation model with approximately 2.5% bone marrow sparing (PBI/BM2.5) was established to determine the radiation dose-response relationships for the prolonged and delayed multi-organ effects of acute radiation exposure. Historically, doses reported to the entire body were assumed to be equal to the prescribed dose at some defined calculation point, and the dose-response relationship for multi-organ injury has been defined relative to the prescribed dose being delivered at this point, e.g...
October 6, 2017: Radiation Research
https://www.readbyqxmd.com/read/28981205/early-supplementation-of-d-cysteine-or-l-cysteine-prevents-hypertension-and-kidney-damage-in-spontaneously-hypertensive-rats-exposed-to-high-salt-intake
#12
Chien-Ning Hsu, Yu-Ju Lin, Pei-Chen Lu, You-Lin Tain
SCOPE: We investigated whether early supplementation of precursors of hydrogen sulfide (H2 S), D- or L-cysteine can prevent hypertension and kidney damage in spontaneously hypertensive rats (SHR) treated with high-salt. METHODS AND RESULTS: We examined 12-week-old male SHRs from four groups: SHR, high salt SHR (SHRs received 1% NaCl in drinking water for 8 weeks), high salt SHR+D (SHRs received high salt and D-cysteine), and high salt SHR+L (SHRs received high salt and L-cysteine)...
October 5, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28980082/accuracy-of-daily-fluid-intake-measurements-using-a-smart-water-bottle
#13
Michael S Borofsky, Casey A Dauw, Nadya York, Colin Terry, James E Lingeman
High fluid intake is an effective preventative strategy against recurrent kidney stones but is known to be challenging to achieve. Recently, a smart water bottle (Hidrate Spark™, Minneapolis, MN) was developed as a non-invasive fluid intake monitoring system. This device could help patients who form stones from low urine volume achieve sustainable improvements in hydration, but has yet to be validated in a clinical setting. Hidrate Spark™ uses capacitive touch sensing via an internal sensor. It calculates volume measurements by detecting changes in water level and sends data wirelessly to users' smartphones through an application...
October 4, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28979538/smoke-on-the-water-a-case-report-of-chronic-renal-failure-resulting-from-the-ingestion-of-smoke-machine-fluid
#14
Alice Trimble, Richard Partridge
We report the case of an 18-year-old male admitted to the Intensive Care Unit in Basingstoke and North Hampshire Hospital, who developed chronic kidney disease following the ingestion of smoke machine fluid. Smoke machine fluid may contain ethylene glycol, and a diagnosis of ethylene glycol toxicity with calcium oxalate nephropathy was made. This case resulted in a National Poisons Information Service internal review of the subject and a new TOXBASE entry for smoke machine fluid ingestion.
February 2017: J Intensive Care Soc
https://www.readbyqxmd.com/read/28978980/role-of-bardoxolone-methyl-a-nuclear-factor-erythroid-2-related-factor-2-activator-in-aldosterone-and-salt-induced-renal-injury
#15
Mikako Hisamichi, Atsuko Kamijo-Ikemori, Takeshi Sugaya, Seiko Hoshino, Kenjiro Kimura, Yugo Shibagaki
The aim of this study was to investigate the renoprotective effect of bardoxolone methyl (BM), a nuclear factor erythroid 2-related factor 2 (Nrf2) activator with an antioxidant effect, in a salt-sensitive hypertension model induced by aldosterone (Ald) and salt. Tubulointerstitial damage with urinary liver-type fatty acid-binding protein (L-FABP) was evaluated using human L-FABP chromosomal transgenic (L-FABP(+/-)) male mice. The mice in the Ald group (n=7) received systemic Ald infusions via an osmotic minipump and were given 1% NaCl water for 35 days...
October 5, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28978534/nmr-spectroscopy-and-electron-microscopy-identification-of-metabolic-and-ultrastructural-changes-to-the-kidney-following-ischemia-reperfusion-injury
#16
Tafadzwa Chihanga, Qing Ma, Jenna D Nicholson, Hannah N Ruby, Richard E Edelmann, Prasad Devarajan, Michael A Kennedy
Cellular, molecular, and ultrastructural nephron changes associated with ischemia reperfusion injury-induced acute kidney injury (IRI-AKI) are not completely understood. Here, a multidisciplinary study was used to identify nephron changes in a mouse model of IRI-AKI. Histological analyses indicated distended Bowman's glomerular spaces and proximal and distal tubules. Increased filtrate volume in nephrons was caused by reduced water reabsorption by severely damaged proximal tubule brush borders and blocked flow of filtrate into collecting tubules by mucoprotein casts in distal tubules...
October 4, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28975487/biochemical-and-histopathological-changes-of-subacute-cadmium-intoxication-in-male-rats
#17
Rasha M Saleh, Walaa F Awadin
Biochemical and histopathological effects of subacute intoxication of rats with cadmium (Cd) were studied in rats. Twenty adult healthy male albino rats were randomly divided into two duplicate groups (five rats in each cage); (1) control group where rats were provided with standard diet and water ad-libitum, (2) Cd group where rats were subjected to freshly prepared Cd chloride solution (CdCl2) 200 mg/l in drinking water daily for 8 weeks, the whole duration of experiment. Blood samples were obtained after 4 weeks, via retro-orbital bleeding for separation of serum...
October 3, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28975098/the-protective-effect-of-buffalo-s-milk-against-toluene-induced-nephrotoxicity-in-rats
#18
Maryam Afravy, Kambiz Angali, Ali Khodadadi, Massumeh Ahmadizadeh
BACKGROUND: Toluene is widely used in different activities of industrial, commercial and household applications. It can cause damage to the human body. Buffalos' milk has a good nutritive value. OBJECTIVES: The aim of this study is to examine the negative effects of toluene on kidney tissues and to investigate the protective effects of buffalo's milk against toluene-induced nephrotoxicity in rats. MATERIALS AND METHODS: Forty adult male Wistar rats (180-220 g weight) were randomly assigned to eight groups (n = 5)...
July 2017: Journal of Nephropathology
https://www.readbyqxmd.com/read/28973931/systems-level-identification-of-pka-dependent-signaling-in-epithelial-cells
#19
Kiyoshi Isobe, Hyun Jun Jung, Chin-Rang Yang, J'Neka Claxton, Pablo Sandoval, Maurice B Burg, Viswanathan Raghuram, Mark A Knepper
G protein stimulatory α-subunit (Gαs)-coupled heptahelical receptors regulate cell processes largely through activation of protein kinase A (PKA). To identify signaling processes downstream of PKA, we deleted both PKA catalytic subunits using CRISPR-Cas9, followed by a "multiomic" analysis in mouse kidney epithelial cells expressing the Gαs-coupled V2 vasopressin receptor. RNA-seq (sequencing)-based transcriptomics and SILAC (stable isotope labeling of amino acids in cell culture)-based quantitative proteomics revealed a complete loss of expression of the water-channel gene Aqp2 in PKA knockout cells...
October 2, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28972403/detection-of-different-genotypes-of-infectious-bronchitis-virus-and-of-infectious-bursal-disease-virus-in-european-broilers-during-an-epidemiological-study-in-2013-and-the-consequences-for-the-diagnostic-approach
#20
J J de Wit, C Cazaban, R Dijkman, G Ramon, Y Gardin
To gather recent data regarding the infectious bronchitis (IB) and infectious bursal disease (IBD) situation in Europe, a large-scale field epidemiological survey using diagnostic samples has been implemented in 2013 for about six months in several European countries: France, Germany, Greece, Italy, the Netherlands, Poland, Portugal, the Republic of Ireland, Spain and the United Kingdom. In 234 flocks that were sampled, strains from 10 different IBV genotypes were detected: the 793B genotype was detected most frequently, followed by QX, Massachusetts (Mass) and the Xindadi-like strains...
October 3, 2017: Avian Pathology: Journal of the W.V.P.A
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