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https://www.readbyqxmd.com/read/29452375/1%C3%AE-hydroxycholecalciferol-improves-the-growth-performance-and-up-regulates-the-mrna-expression-of-vitamin-d-receptor-in-the-small-intestine-and-kidney-of-broiler-chickens
#1
J C Han, J G Wang, G H Chen, J L Zhang, N Zhang, H X Qu, Y Guo, Y F Yan, X J Yang
1α-Hydroxycholecalciferol (1α-OH-D3) is a vitamin D derivative. The objective of this study was to evaluate the effects of 1α-OH-D3 on the growth and the mRNA expression of vitamin D receptor (VDR) in the small intestine and kidney of chickens. A total of 240 males of one-day-old Ross 308 broilers was randomly assigned to 4 treatments with 5 replicates of 12 birds per replicate. Three levels of 1α-OH-D3 (1.25, 2.5, and 5 μg/kg) were added to a basal diet containing 0.50% calcium (Ca), 0.25% non-phytate phosphorus (NPP), and without supplemental cholecalciferol (vitamin D3)...
February 14, 2018: Poultry Science
https://www.readbyqxmd.com/read/29449563/cinacalcet-mediated-activation-of-the-camkk%C3%AE-lkb1-ampk-pathway-attenuates-diabetic-nephropathy-in-db-db-mice-by-modulation-of-apoptosis-and-autophagy
#2
Ji Hee Lim, Hyung Wook Kim, Min Young Kim, Tae Woo Kim, Eun Nim Kim, Yaeni Kim, Sungjin Chung, Young Soo Kim, Bum Soon Choi, Yong-Soo Kim, Yoon Sik Chang, Hye Won Kim, Cheol Whee Park
Apoptosis and autophagy are harmoniously regulated biological processes for maintaining tissue homeostasis. AMP-activated protein kinase (AMPK) functions as a metabolic sensor to coordinate cellular survival and function in various organs, including the kidney. We investigated the renoprotective effects of cinacalcet in high-glucose treated human glomerular endothelial cells (HGECs), murine podocytes and C57BLKS/J-db/db mice. In cultured HGECs and podocytes, cinacalcet decreased oxidative stress and apoptosis and increased autophagy that were attributed to the increment of intracellular Ca 2+ concentration and the phosphorylation of Ca 2+ /calmodulin-dependent protein kinase kinaseβ (CaMKKβ)-Liver kinase B1 (LKB1)-AMPK and their downstream signals including the phosphorylation of endothelial nitric oxide synthase (eNOS) and increases in superoxide dismutases and B cell leukemia/lymphoma 2/BCL-2-associated X protein expression...
February 15, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29447949/protective-effects-of-alpinae-oxyphyllae-fructus-extracts-on-lipopolysaccharide-induced-animal-model-of-alzheimer-s-disease
#3
Yunlong Wang, Mengshi Wang, Kaiyue Fan, Tongde Li, Tingxu Yan, Bo Wu, Kaishun Bi, Ying Jia
ETHNOPHARMACOLOGICAL RELEVANCE: Alpinae Oxyphyllae Fructus (AOF) with warming and tonifying the kidney and spleen, anti-salivation, anti-polyuria and anti-diarrhea functions is the dried ripe fruits of Alpinia oxyphylla Miq. (Zingiberaceae). As a traditional Chinese medicine, its application history is very long. AIMS OF THE STUDY: The purpose of our study is to investigate the effects of different solvent extracts from AOF on lipopolysaccharide (LPS)-induced animal model of Alzheimer's disease (AD) to elucidate the traditional medical theories with modern pharmacological methods and provide a reference for further clarifying its active components and mechanisms...
February 12, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29444905/renal-interstitial-platelet-derived-growth-factor-receptor-%C3%AE-cells-support-proximal-tubular-regeneration
#4
Ina Maria Schiessl, Alexandra Grill, Katharina Fremter, Dominik Steppan, Maj-Kristina Hellmuth, Hayo Castrop
BACKGROUND: The kidney is considered to be a structurally stable organ with limited baseline cellular turnover. Nevertheless, single cells must be constantly replaced to conserve the functional integrity of the organ. PDGF chain B (PDGF-BB) signaling through fibroblast PDGF receptor- β (PDGFR β ) contributes to interstitial-epithelial cell communication and facilitates regenerative functions in several organs. However, the potential role of interstitial cells in renal tubular regeneration has not been examined...
February 14, 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29444515/comprehensive-mirna-analysis-of-human-umbilical-cord-derived-mesenchymal-stromal-cells-and-extracellular-vesicles
#5
Xiang-Yu Zou, Yongjiang Yu, Sihao Lin, Liang Zhong, Jie Sun, Guangyuan Zhang, Yingjian Zhu
BACKGROUND/AIMS: Mesenchymal stromal cells (MSCs) participate in the tissue-specific repair of many different organs, especially the kidney. Their effects are primarily mediated by the paracrine release of factors including extracellular vesicles (EVs), which are composed of micro-vesicles and exosomes. The corresponding microRNAs (miRNAs) of EVs are considered important for their biological functions. METHODS: MSCs were cultured from the human umbilical cord, and EVs were isolated from the medium...
February 8, 2018: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29444509/associations-between-intravenous-iron-inflammation-and-fgf23-in-non-dialysis-patients-with-chronic-kidney-disease-stages-3-5
#6
Katarzyna Muras-Szwedziak, Michal Nowicki
BACKGROUND/AIMS: Both iron deficiency and chronic inflammation are highly prevalent in patients with chronic kidney disease (CKD). The effect of intravenous iron infusion on mineral metabolism in CKD may be modified by inflammation. Intravenous iron theraphy may reduce peripheral degradation, secretion, clearence of iFGF23 and lead to hypophosphatemia. The aim of the study was to evaluate the effect of intravenous iron on mineral metabolism in CKD patients. METHODS: 35 non-dialysis patients with CKD stages 3-5...
February 8, 2018: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29444320/effect-of-phytase-on-growth-performance-phytate-degradation-and-gene-expression-of-myo-inositol-transporters-in-the-small-intestine-liver-and-kidney-of-21-day-old-broilers
#7
C L Walk, M R Bedford, O A Olukosi
An experiment was conducted to evaluate phytase supplementation on growth, phytate degradation, and the gene expression of myo-inositol transporters in 21-day old broilers. Ross 308, male broilers (n = 240) were assigned to one of four diets, with 10 pens/diet and six birds/pen from day one to 21. The diets consisted of a negative control (NC) formulated to meet or exceed Ross 308 nutrient requirements, with the exception of calcium (Ca) and available P (avP), which were reduced by 0.16 and 0.15%, respectively...
February 12, 2018: Poultry Science
https://www.readbyqxmd.com/read/29440373/calcium-supplementation-in-osteoporosis-useful-or-harmful
#8
Iacopo Chiodini, Mark J Bolland
Osteoporosis and fragility fractures are important social and economic problems worldwide and are due to both the loss of bone mineral density and sarcopenia. Indeed, fragility fractures are associated with increased disability, morbidity and mortality. It is known that a normal calcium balance together with a normal vitamin D status is important for maintaining well-balanced bone metabolism and for many years calcium and vitamin D has been considered crucial in the prevention and treatment of osteoporosis...
February 12, 2018: European Journal of Endocrinology
https://www.readbyqxmd.com/read/29435125/inhibition-of-autophagy-attenuated-calcium-oxalate-crystal-induced-renal-tubular-epithelial-cell-injury-in-vivo-and-in-vitro
#9
Yunlong Liu, Derong Li, Ziqi He, Quan Liu, Jihua Wu, Xiaofeng Guan, Zhiwei Tao, Yaoliang Deng
Accumulating evidence suggests that autophagy is involved in the pathophysiological processes of kidney diseases. However, the role of autophagy in the formation of calcium oxalate (CaOx) nephrolithiasis remains unclear. In this study, we investigated the effects of autophagy on renal tubular epithelial cell injury induced by CaOx crystals in vivo and in vitro. We first observed that the expression levels of LC3-II and BECN1 and number of autophagic vacuoles were markedly increased in the renal tissue of CaOx stone patients...
January 12, 2018: Oncotarget
https://www.readbyqxmd.com/read/29434824/clinical-importance-of-chemokines-and-inflammatory-cytokines-for-patient-care-following-percutaneous-nephrolithotripsy
#10
Junrong Wang, Wei Wang, Wei Guo, Yanru Ma, Tianhui Ji, Baodi Zhang
Chemokines are a class of proteins with low molecular weight that serve important roles in the progression of inflammation. Percutaneous nephrolithotripsy is a surgical technique in which lasers or ultrasound are utilized to break down and/or remove kidney stones. In order to ensure a full recovery following surgery, effective patient care and nursing are required. In the present study, a total of 348 patients with kidney stones were recruited and the clinical importance of chemokines and inflammatory cytokines for the nursing of patients during perioperative period was investigated...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29434184/cyclosporin-a-aggravates-calcification-of-vascular-smooth-muscle-cells-under-high-glucose-conditions-with-a-calcifying-medium
#11
Dae Hee Kim, Keon Cheol Lee, Sang Youb Han
BACKGROUND Vascular calcification (VC) progresses substantially even after kidney transplantation, and is a predictor of morbidity and mortality. However, the effect of cyclosporin A (CsA) on VC has not been reported in diabetic kidney transplant patients. In this study, we evaluated the effect of CsA on the VC of mouse vascular smooth muscle cells (VSMCs) under high glucose (HG). MATERIAL AND METHODS To demonstrate the effect of CsA (1.0 µmol/L) and HG (30 mM) in the induction of the VC of the VSMCs, we determined alkaline phosphatase (ALP) activity, microscopic morphology of calcification, the expressions of the calcification and inflammation-related genes, and the intracellular calcium concentrations in VSMCs...
February 13, 2018: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/29433578/resistant-hypertension-on-treatment-reshypot-sequential-nephron-blockade-compared-to-dual-blockade-of-the-renin-angiotensin-aldosterone-system-plus-bisoprolol-in-the-treatment-of-resistant-arterial-hypertension-study-protocol-for-a-randomized-controlled-trial
#12
Elizabeth do Espirito Santo Cestário, Letícia Aparecida Barufi Fernandes, Luiz Tadeu Giollo-Júnior, Jéssica Rodrigues Roma Uyemura, Camila Suemi Sato Matarucco, Manoel Idelfonso Paz Landim, Luciana Neves Cosenso-Martin, Lúcia Helena Bonalume Tácito, Heitor Moreno, José Fernando Vilela-Martin, Juan Carlos Yugar-Toledo
BACKGROUND: Resistant hypertension is characterized when the blood pressure (BP) remains above the recommended goal after taking three antihypertensive drugs with synergistic actions at their maximum recommended tolerated doses, preferably including a diuretic. Identifying the contribution of intravascular volume and serum renin in maintaining BP levels could help tailor more effective hypertension treatment, whether acting on the control of intravascular volume or sodium balance, or acting on the effects of the renin-angiotensin-aldosterone system (RAAS) on the kidney...
February 12, 2018: Trials
https://www.readbyqxmd.com/read/29430198/acute-kidney-injury-and-infections-in-patients-taking-antihypertensive-drugs-a-self-controlled-case-series-analysis
#13
Kathryn E Mansfield, Ian J Douglas, Dorothea Nitsch, Sara L Thomas, Liam Smeeth, Laurie A Tomlinson
Background: The relative risk of acute kidney injury (AKI) following different infections, and whether angiotensin-converting enzyme inhibitors (ACEIs)/angiotensin receptor blockers (ARBs) modify the risk, is unclear. We aimed to determine the risks of hospital admission with AKI following infections (urinary tract infection [UTI], lower respiratory tract infection [LRTI], and gastroenteritis) among users of antihypertensive drugs. Methods: We used UK electronic health records from practices contributing to the Clinical Practice Research Datalink linked to the Hospital Episode Statistics database...
2018: Clinical Epidemiology
https://www.readbyqxmd.com/read/29428569/a-continuum-of-mineralization-from-human-renal-pyramid-to-stones-on-stems
#14
Benjamin A Sherer, Ling Chen, Misun Kang, Alex R Shimotake, Scott V Wiener, Tom Chi, Marshall L Stoller, Sunita P Ho
The development of new modalities for kidney stone prevention rests upon understanding the progression of mineralization within the renal pyramid. The progression from small foci of mineralization within the renal pyramid to larger interstitial plaques that ultimately lead to the formation of clinically detectable calcium-based stones on calcium phosphate stems will be presented through correlative microscopy approach. High resolution X-ray computed tomography (micro-XCT), electron microscopy, and energy dispersive X-ray (EDX) compositional analyses of interstitial plaques, stems, and attached stones were performed...
February 8, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29427253/lack-of-connexin-40-decreases-the-calcium-sensitivity-of-renin-secreting-juxtaglomerular-cells
#15
Dominik Steppan, Lisa Geis, Lin Pan, Kenneth Gross, Charlotte Wagner, Armin Kurtz
The so-called calcium paradoxon of renin describes the phenomenon that exocytosis of renin from juxtaglomerular cells of the kidney is stimulated by lowering of the extracellular calcium concentration. The yet poorly understood effect of extracellular calcium on renin secretion appears to depend on the function of the gap junction protein connexin 40 (Cx40) in renin-producing cells. This study aimed to elucidate the role of Cx40 for the calcium dependency of renin secretion in more detail by investigating if Cx40 function is really essential for the influence of extracellular calcium on renin secretion, if and how Cx40 affects intracellular calcium dynamics in renin-secreting cells and if Cx40-mediated gap junctional coupling of renin-secreting cells with the mesangial cell area is relevant for the influence of extracellular calcium on renin secretion...
February 9, 2018: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/29426300/effect-of-calcitriol-on-serum-hepcidin-in-individuals-with-chronic-kidney-disease-a-randomized-controlled-trial
#16
Bhupesh Panwar, Diane McCann, Gordana Olbina, Mark Westerman, Orlando M Gutiérrez
BACKGROUND: Anemia is highly prevalent in chronic kidney disease (CKD). Elevated hepcidin concentrations are an important mediator of disordered iron metabolism, a key mechanism underlying anemia of CKD. Vitamin D was recently shown to reduce serum hepcidin concentrations in healthy individuals. We examined whether treatment with calcitriol reduces serum hepcidin in individuals with CKD. METHODS: A total of 40 participants with stage 3 or 4 CKD (eGFR 15-60 ml/min/1...
February 9, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29423207/old-and-new-calcimimetics-for-treatment-of-secondary-hyperparathyroidism-impact-on-biochemical-and-relevant-clinical-outcomes
#17
Luciano Pereira, Catarina Meng, Daniela Marques, João M Frazão
Secondary hyperparathyroidism (SHPT) is associated with increased bone turnover, risk of fractures, vascular calcifications, and cardiovascular and all-cause mortality. The classical treatment for SHPT includes active vitamin D compounds and phosphate binders. However, achieving the optimal laboratory targets is often difficult because vitamin D sterols suppress parathyroid hormone (PTH) secretion, while also promoting calcium and phosphate intestinal absorption. Calcimimetics increase the sensitivity of the calcium-sensing receptor, so that even with lower levels of extracellular calcium a signal can still exist, leading to a decrease of the set-point for systemic calcium homeostasis...
February 2018: Clinical Kidney Journal
https://www.readbyqxmd.com/read/29423206/achievement-of-kidney-disease-improving-global-outcomes-mineral-and-bone-targets-between-2010-and-2014-in-incident-dialysis-patients-in-france-the-photo-graphe3-study
#18
Denis Fouque, Hubert Roth, Bernadette Darné, Louis Jean-Bouchet, Eric Daugas, Tilman B Drüeke, Thierry Hannedouche, Guillaume Jean, Gérard M London
Background: Abnormal serum phosphate, calcium and parathyroid hormone (PTH) levels in patients with chronic kidney disease (CKD) undergoing haemodialysis have been associated with poor survival. The French Phosphorus and Calcium Observatory (Photo-Graphe ® 3) aimed to estimate the percentage of CKD patients achieving the three Kidney Disease: Improving Global Outcomes (KDIGO) targets about optimal serum phosphate, calcium and PTH over a 3.5-year follow-up period. Methods: This was a prospective, multicentre, epidemiological observational study conducted with nephrologists in France, selected using a clustering approach...
February 2018: Clinical Kidney Journal
https://www.readbyqxmd.com/read/29423205/ckd-mbd-kdigo-guidelines-how-difficult-is-reaching-the-target
#19
Mario Cozzolino
Patients with chronic kidney disease (CKD) are affected by mineral and bone disorder (MBD), resulting in abnormalities in serum calcium (Ca), phosphorous (P) and parathyroid hormone (PTH). Changes in mineral metabolism have also been associated with higher rates of both all-cause and cardiovascular-related mortality. The majority of haemodialysis patients are also deficient in the endogenous hormone 1,25-dihydroxyvitamin D (calcitriol), often contributing to increased secondary hyperparathyroidism (SHPT) and consequently to abnormal levels of Ca, P and PTH...
February 2018: Clinical Kidney Journal
https://www.readbyqxmd.com/read/29422481/investigation-of-adipose-tissue-fatty-acid-composition-in-men-with-uronephrolithiasis-and-metabolic-syndrome
#20
Inga Bikulčienė, Laima Vasiliauskaitė, Zita Aušrelė Kučinskienė, Arvydas Kaminskas, Vaiva Hendrixson
BACKGROUND Fatty acids (FA) and their metabolites are closely related to some mechanisms involved in the development of uronephrolithiasis. The aim of this study was to evaluate the relationship between FA composition and type of kidney stones. MATERIAL AND METHODS Abdominal adipose tissue fatty acid methyl esters of 71 men with nephrolithiasis were identified by GC/MS, and the type of kidney stones was identified using FTIR infrared spectroscopy. Patients were divided into groups according to diagnosis of metabolic syndrome (MS) and type of kidney stone...
February 9, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
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