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https://www.readbyqxmd.com/read/28646163/aldosterone-modulates-the-association-between-ncc-and-enac
#1
Brandi M Wynne, Abinash C Mistry, Otor Al-Khalili, Rickta Mallick, Franziska Theilig, Douglas C Eaton, Robert S Hoover
Distal sodium transport is a final step in the regulation of blood pressure. As such, understanding how the two main sodium transport proteins, the thiazide-sensitive sodium chloride cotransporter (NCC) and the epithelial sodium channel (ENaC), are regulated is paramount. Both are expressed in the late distal nephron; however, no evidence has suggested that these two sodium transport proteins interact. Recently, we established that these two sodium transport proteins functionally interact in the second part of the distal nephron (DCT2)...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28621459/microtubule-actin-crosslinking-factor-1-promotes-osteoblast-differentiation-by-promoting-%C3%AE-catenin-tcf1-runx2-signaling-axis
#2
Lifang Hu, Peihong Su, Chong Yin, Yan Zhang, Runzhi Li, Kun Yan, Zhihao Chen, Dijie Li, Ge Zhang, Liping Wang, Zhiping Miao, Airong Qian, Cory J Xian
Osteoblast differentiation is a multistep process delicately regulated by many factors, including cytoskeletal dynamics and signaling pathways. Microtubule actin crosslinking factor 1 (MACF1), a key cytoskeletal linker, has been shown to play key roles in signal transduction and in diverse cellular processes; however, its role in regulating osteoblast differentiation is still needed to be elucidated. To further uncover the functions and mechanisms of action of MACF1 in osteoblast differentiation, we examined effects of MACF1 knockdown (MACF1-KD) in MC3T3-E1 osteoblastic cells on their osteoblast differentiation and associated molecular mechanisms...
June 16, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28606794/antifibrotic-actions-of-peroxisome-proliferator-activated-receptor-%C3%AE-ligands-in-corneal-fibroblasts-are-mediated-by-%C3%AE-catenin-regulated-pathways
#3
Kye-Im Jeon, Richard P Phipps, Patricia J Sime, Krystel R Huxlin
Wound healing after corneal injury typically involves fibrosis, with transforming growth factor β1 (TGF-β1) as one of its strongest mediators. A class of small molecules-peroxisome proliferator-activated receptor γ (PPARγ) ligands-exert potent antifibrotic effects in the cornea by blocking phosphorylation of p38 mitogen-activated protein kinase (MAPK). However, why this blocks fibrosis remains unknown. Herein, we show that PPARγ ligands (rosiglitazone, troglitazone, and 15-deoxy-Δ12,14-prostaglandin J2) decrease levels of β-catenin...
June 10, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28595035/n-methyl-d-aspartate-receptors-mediate-epilepsy-induced-axonal-impairment-and-tau-phosphorylation-via-activating-glycogen-synthase-kinase-3%C3%AE-and-cyclin-dependent-kinase-5
#4
Xi Liu, Shu Ou, Maojia Yin, Tao Xu, Teng Wang, Ying Liu, Xueying Ding, Xinyuan Yu, Jinxian Yuan, Hao Huang, Xiuhang Zhang, Xinjie Tan, Lifen Chen, Yangmei Chen
The mechanism of epilepsy-induced axonal impairment is poorly understood. N-methyl-D-aspartate receptors (NMDARs) play important roles in epilepsy and mediate structural and functional axonal impairment. GSK-3β and Cdk5 affect axons and are regulated by NMDARs, while their roles in epilepsy-induced axonal impairment are unclear. We demonstrated that axonal impairment is characterized by neurofilament heavy (NFH) reduction, amyloid precursor protein (APP) accumulation, and increased tau phosphorylation accompanied by a decrease of total tau in temporal lobe epilepsy (TLE) patients and pentylenetetrazol (PTZ)-kindled rats...
April 2017: Discovery Medicine
https://www.readbyqxmd.com/read/28594256/nitidine-chloride-inhibited-the-expression-of-s-phase-kinase-associated-protein-2-in-ovarian-cancer-cells
#5
Huaping Mou, Ping Guo, Xiaoming Li, Chuanli Zhang, Jing Jiang, Lishuai Wang, Qiu Wang, Zhiping Yuan
Nitidine chloride (NC) has been reported to exert its anti-tumor activity in various types of human cancers. However, the molecular mechanism of NC-mediated tumor suppressive function is largely unclear. In the current study, we used several approaches such as MTT, FACS, RT-PCR, Western blotting analysis, invasion assay, transfection, to explore the molecular basis of NC-triggered anti-cancer activity. We found that NC inhibited cell growth, induced cell apoptosis, caused cell cycle arrest in ovarian cancer cells...
June 8, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28575091/repeated-exposure-to-methamphetamine-induces-sex-dependent-hypersensitivity-to-ischemic-injury-in-the-adult-rat-heart
#6
Boyd R Rorabaugh, Sarah L Seeley, Thorne S Stoops, Manoranjan S D'Souza
BACKGROUND: We previously reported that adult female, but not male rats that were prenatally exposed to methamphetamine exhibit myocardial hypersensitivity to ischemic injury. However, it is unknown whether hypersensitivity to ischemic injury develops when rats are exposed to methamphetamine during adulthood. The goal of this study was to determine whether methamphetamine exposure during adulthood sensitizes the heart to ischemic injury. METHODS: Adult male and female rats received daily injections of methamphetamine (5 mg/kg) or saline for 10 days...
2017: PloS One
https://www.readbyqxmd.com/read/28575066/combined-application-of-arsenic-trioxide-and-lithium-chloride-augments-viability-reduction-and-apoptosis-induction-in-human-rhabdomyosarcoma-cell-lines
#7
Sabine B Schleicher, Julian J Zaborski, Rosa Riester, Natascha Zenkner, Rupert Handgretinger, Torsten Kluba, Frank Traub, Karen A Boehme
Rhabdomyosarcomas (RMS) are the most prevalent soft tissue sarcomas affecting children and adolescents. Despite intensive treatment consisting of multimodal chemotherapy and surgery RMS patients diagnosed with metastatic disease expect long term survival rates of only 20%. Often multidrug resistance arises upon initial response emphasizing the need for new therapeutic drugs to improve treatment efficiency. Previously, we demonstrated the efficacy of the FDA approved drug arsenic trioxide (ATO) specifically inhibiting viability and clonal growth as well as inducing cell death in human RMS cell lines of different subtypes...
2017: PloS One
https://www.readbyqxmd.com/read/28566716/glycogen-synthase-kinase-3%C3%AE-inhibitors-prevent-hepatitis-c-virus-release-assembly-through-perturbation-of-lipid-metabolism
#8
Mohammed A Sarhan, Mohamed S Abdel-Hakeem, Andrew L Mason, D Lorne Tyrrell, Michael Houghton
Direct acting antivirals against hepatitis C virus (HCV) have markedly improved cure rates in the past few years. However, they are expensive, with only few targeting host cell factors, and affecting virus assembly and release. Huh7.5 cells infected with a JFH-1 clone of HCV were treated with two different glycogen synthase kinase (GSK3)-β inhibitors; AR-A014418 and lithium chloride. Intra- and extracellular HCV virions and specific infectivity was determined using real-time RT-PCR and TCID50, and changes in lipid production were identified by enzyme-linked immunoassay and mass spectrometry analyses...
May 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28554723/new-treatments-targeting-the-basic-defects-in-cystic-fibrosis
#9
Isabelle Fajac, Claire E Wainwright
Cystic fibrosis (CF) is a monogenic autosomal recessive disorder affecting around 75,000 individuals worldwide. It is a multi-system disease but the main morbidity and mortality is caused by chronic lung disease. Due to newborn screening, a multidisciplinary approach to care and intensive symptomatic treatment, the prognosis has dramatically improved over the last decades and there are currently more adults than children in many countries. However, CF is still a very severe disease with a current median age of life expectancy in the fourth decade of life...
May 26, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28526501/hypoxia-modulates-cell-migration-and-proliferation-in-placenta-derived-mesenchymal-stem-cells
#10
Li Li, Prashant Kumar Jaiswal, Georges Makhoul, Rishi Jurakhan, Kaviyanka Selvasandran, Khalid Ridwan, Renzo Cecere
OBJECTIVES: For more than a decade, stem cells isolated from different tissues have been evaluated in cell therapy. Among them, the human bone marrow-derived mesenchymal stem cells (hBM-MSCs) were investigated extensively in the treatment of myocardial infarction. Recently, the human placenta-derived mesenchymal stem cells (hPD-MSCs), which are readily available from a biological waste, appear to be a viable alternative to hBM-MSCs. METHODS: C-X-C chemokine receptor type 4 (CXCR4) gene expression and localization were detected and validated in hPD-MSCs and hBM-MSCs via polymerase chain reaction and immunofluorescence...
April 13, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28522431/wnk1-and-p38-mapk-distribution-in-ionocytes-and-accessory-cells-of-euryhaline-teleost-fish-implies-ionoregulatory-function
#11
W S Marshall, R R F Cozzi, M Spieker
Ionocytes of euryhaline teleost fish secrete NaCl, under regulation by serine and threonine kinases, including with-no-lysine kinase (WNK1) and p38 mitogen-activated protein kinase (MAPK). Mummichogs (Fundulus heteroclitus L.) were acclimated to freshwater (FW), full strength seawater (SW) and hypersaline conditions (2SW). Immunocytochemistry of ionocytes in opercular epithelia of fish acclimated to SW and 2SW revealed that WNK1-anti-pT58 phosphoantibody localized strongly to accessory cells and was present in the cytosol of ionocytes close to, cystic fibrosis transmembrane conductance regulator (CFTR) in the apical membrane and sodium, potassium, 2 chloride cotransporter (NKCC) in basolateral membrane...
May 18, 2017: Biology Open
https://www.readbyqxmd.com/read/28490694/-effect-of-acupuncture-combined-with-hypothermia-on-mapk-erk-pathway-and-apoptosis-related-factors-in-rats-with-cerebral-ischemia-reperfusion-injury
#12
Yaping Lin, Qin Liu, Chutao Chen, Wen Chen, Heng Xiao, Qianyun Yang, Haomei Tian
To observe effect of acupuncture combined with hypothermia therapy on MAPK/ERK pathway and apoptosis related factorsin rats suffered cerebral ischemia reperfusion and to explore underlying mechanisms.
 Methods: Middle cerebral artery ischemia model were established.Ninety SD rats were randomly assigned into a blank group, a control group, a model group, an acupuncture group, a mild hypothermia group, and an acupuncture with hypothermia group. After 72 h treatment, nerve function defect scores were observed, and infarction area percent was detected by 2, 3, 5-triphenyl-2H-tetrazolium chloride (TTC) staining; expressions of Bcl-2 and Bax were examined by immunohistochemistry; apoptotic cells were detected by TUNEL assay; and expression levels of phospho-mitogen-activated protein kinase(p-MEK2) and phospho-extracellular signal regulated kinase 1/2 (p-ERK1/2) in the rats' hippocampus ischemic side were determined by Western blot...
April 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28445148/pkc-and-camk-ii-inhibitions-coordinately-rescue-ischemia-induced-gabaergic-neuron-dysfunction
#13
Li Huang, Chun Wang, Shidi Zhao, Rongjing Ge, Sudong Guan, Jin-Hui Wang
Cerebral ischemia leads to neuronal death for stroke, in which the imbalance between glutamatergic neurons and GABAergic neurons toward neural excitotoxicity is presumably involved. GABAergic neurons are vulnerable to pathological factors and impaired in an early stage of ischemia. The rescue of GABAergic neurons is expected to be the strategy to reserve ischemic neuronal impairment. As protein kinase C (PKC) and calmodulin-dependent protein kinase II (CaMK-II) are activated during ischemia, we have investigated whether the inhibitions of these kinases rescue the ischemic impairment of cortical GABAergic neurons...
June 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28442491/constitutively-active-spak-causes-hyperkalemia-by-activating-ncc-and-remodeling-distal-tubules
#14
P Richard Grimm, Richard Coleman, Eric Delpire, Paul A Welling
Aberrant activation of with no lysine (WNK) kinases causes familial hyperkalemic hypertension (FHHt). Thiazide diuretics treat the disease, fostering the view that hyperactivation of the thiazide-sensitive sodium-chloride cotransporter (NCC) in the distal convoluted tubule (DCT) is solely responsible. However, aberrant signaling in the aldosterone-sensitive distal nephron (ASDN) and inhibition of the potassium-excretory renal outer medullary potassium (ROMK) channel have also been implicated. To test these ideas, we introduced kinase-activating mutations after Lox-P sites in the mouse Stk39 gene, which encodes the terminal kinase in the WNK signaling pathway, Ste20-related proline-alanine-rich kinase (SPAK)...
April 25, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28437476/clc-3-chloride-channel-mediates-the-role-of-parathyroid-hormone-1-34-on-osteogenic-differentiation-of-osteoblasts
#15
Xiaolin Lu, Yin Ding, Qiannan Niu, Shijie Xuan, Yan Yang, Yulong Jin, Huan Wang
INTRODUCTION: Different concentrations of parathyroid hormone [1-34] (PTH [1-34]) can have totally opposite effects on osteoblasts. Intermittent stimulation with PTH can significantly increase bone mineral density in vitro, mainly through the protein kinase A (PKA) signaling pathway, which phosphorylates runt-related transcription factor 2 (Runx2). The ClC-3 chloride channel, an important anion channel, can also promote osteogenesis via the Runx2 pathway based on recent studies. The purpose of our study, therefore, is to research whether the ClC-3 chloride channel has an effect on PTH osteodifferentiation in MC3T3-E1 cells...
2017: PloS One
https://www.readbyqxmd.com/read/28435089/cobalt-chloride-induces-rhoa-rock-activation-and-remodeling-effect-in-h9c2-cardiomyoblasts-involvement-of-pi3k-akt-and-mapk-pathways
#16
Cheng-I Cheng, Yueh-Hong Lee, Po-Han Chen, Yu-Chun Lin, Ming-Huei Chou, Ying-Hsien Kao
Chronic heart failure is a serious complication of myocardial infarction, one of the major causes of death worldwide that often leads to adverse cardiac hypertrophy and poor prognosis. Hypoxia-induced cardiac tissue remodeling is considered an important underlying etiology. This study aimed to delineate the signaling profiles of RhoA/ROCK, PI3K/Akt, and MAPK and their involvement in regulation of remodeling events in cultured H9c2 cardiomyoblast cells. In addition to its growth-suppressive effect, the hypoxia-mimetic chemical, cobalt chloride (CoCl2) significantly induced RhoA kinase activation as revealed by increased MBS phosphorylation and ROCK1/2 expression in H9c2 cells...
August 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28433992/the-aachen-minipig-phenotype-genotype-hematological-and-biochemical-characterization-and-comparison-to-the-g%C3%A3-ttingen-minipig
#17
Kerstin Pawlowsky, Lisa Ernst, Julia Steitz, Thaddäus Stopinski, Babette Kögel, Anna Henger, Reinhart Kluge, René Tolba
BACKGROUND: The pig is one of the most frequently used large animal models for biomedical research, especially in the field of translational research and surgical models. While standard livestock breeds are used in short-term and acute studies, minipig breeds are the preferred breeds in long-term and chronic studies due to their limited growth and body weight. OBJECTIVE: In consideration of the 3R principle (refinement, reduction, replacement) and the increasing demand, the aim of this study was to generate a new, robust, non-specific-pathogen-free minipig breed, the Aachen minipig...
April 22, 2017: European Surgical Research. Europäische Chirurgische Forschung. Recherches Chirurgicales Européennes
https://www.readbyqxmd.com/read/28420001/nicotinamide-n-methyltransferase-suppression-participates-in-nickel-induced-histone-h3-lysine9-dimethylation-in-beas-2b-cells
#18
Qian Li, Min-Di He, Lin Mao, Xue Wang, Yu-Lin Jiang, Min Li, Yong-Hui Lu, Zheng-Ping Yu, Zhou Zhou
BACKGROUND: Nickel compounds are well-established human carcinogens with weak mutagenic activity. Histone methylation has been proposed to play an important role in nickel-induced carcinogenesis. Nicotinamide N-methyltransferase (NNMT) decreases histone methylation in several cancer cells by altering the cellular ratio of S-adenosylmethionine (SAM) to S-adenosylhomocysteine (SAH). However, the role of NNMT in nickel-induced histone methylation remains unclear. METHODS: BEAS-2B cells were exposed to different concentrations of nickel chloride (NiCl2) for 72 h or 200 μM NiCl2 for different time periods...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28399187/additive-effects-of-cherlerythrine-chloride-combination-with-erlotinib-in-human-non-small-cell-lung-cancer-cells
#19
Miao He, Zhaoying Yang, Le Zhang, Changlong Song, Youjun Li, Xingyi Zhang
Several studies implicate that lung cancer progression is governed by the interaction between epidermal growth factor receptor (EGFR) signaling and protein kinase C (PKC) pathways. Combined the targeting of EGFR and PKC may have an additive or synergistic effects in lung cancer treatment. The aim of this study is to explore the potential utility by inhibiting these two pathways with the combination of erlotinib and chelerythrine chloride in non-small cell lung cancer (NSCLC) cell lines. The erlotinib-less sensitive cell lines SK-MES-1 and A549 were treated with erlotinib or chelerythrine by themselves or in combination with each other...
2017: PloS One
https://www.readbyqxmd.com/read/28396240/identification-of-proteins-involved-in-the-adhesionof-candida-species-to-different-medical-devices
#20
Arianna Núñez-Beltrán, Everardo López-Romero, Mayra Cuéllar-Cruz
Adhesion is the first step for Candida species to form biofilms on medical devices implanted in the human host. Both the physicochemical nature of the biomaterial and cell wall proteins (CWP) of the pathogen play a determinant role in the process. While it is true that some CWP have been identified in vitro, little is known about the CWP of pathogenic species of Candida involved in adhesion. On this background, we considered it important to investigate the potential role of CWP of C. albicans, C. glabrata, C...
April 7, 2017: Microbial Pathogenesis
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