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Chloride cotransporter

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https://www.readbyqxmd.com/read/28344592/dysbindin-deficiency-modifies-the-expression-of-gaba-neuron-and-ion-permeation-transcripts-in-the-developing-hippocampus
#1
Jennifer Larimore, Stephanie A Zlatic, Miranda Arnold, Kaela S Singleton, Rebecca Cross, Hannah Rudolph, Martha V Bruegge, Andrea Sweetman, Cecilia Garza, Eli Whisnant, Victor Faundez
The neurodevelopmental factor dysbindin is required for synapse function and GABA interneuron development. Dysbindin protein levels are reduced in the hippocampus of schizophrenia patients. Mouse dysbindin genetic defects and other mouse models of neurodevelopmental disorders share defective GABAergic neurotransmission and, in several instances, a loss of parvalbumin-positive interneuron phenotypes. This suggests that mechanisms downstream of dysbindin deficiency, such as those affecting GABA interneurons, could inform pathways contributing to or ameliorating diverse neurodevelopmental disorders...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28341239/calcineurin-inhibitors-block-sodium-chloride-cotransporter-dephosphorylation-in-response-to%C3%A2-high-potassium-intake
#2
Wakana Shoda, Naohiro Nomura, Fumiaki Ando, Yutaro Mori, Takayasu Mori, Eisei Sohara, Tatemitsu Rai, Shinichi Uchida
Dietary potassium intake is inversely related to blood pressure and mortality. Moreover, the sodium-chloride cotransporter (NCC) plays an important role in blood pressure regulation and urinary potassium excretion in response to potassium intake. Previously, it was shown that NCC is activated by the WNK4-SPAK cascade and dephosphorylated by protein phosphatase. However, the mechanism of NCC regulation with acute potassium intake is still unclear. To identify the molecular mechanism of NCC regulation in response to potassium intake, we used adult C57BL/6 mice fed a 1...
February 2017: Kidney International
https://www.readbyqxmd.com/read/28337033/cortical-cells-reveal-app-as-a-new-player-in-the-regulation-of-gabaergic-neurotransmission
#3
Anna Doshina, Florian Gourgue, Michiho Onizuka, Remi Opsomer, Peng Wang, Kunie Ando, Bernadette Tasiaux, Ilse Dewachter, Pascal Kienlen-Campard, Jean-Pierre Brion, Philippe Gailly, Jean-Noël Octave, Nathalie Pierrot
The amyloid precursor protein (APP) modulates synaptic activity, resulting from the fine tuning of excitatory and inhibitory neurotransmission. GABAergic inhibitory neurotransmission is affected by modifications in intracellular chloride concentrations regulated by Na(+)-K(+)-2Cl(-) cotransporter 1 (NKCC1) and neuronal K(+)-Cl(-) cotransporter 2 (KCC2), allowing entrance and efflux of chloride, respectively. Modifications in NKCC1 and KCC2 expression during maturation of cortical cells induce a shift in GABAergic signaling...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28336934/low-frequency-stimulation-of-the-primary-focus-retards-positive-transfer-of-secondary-focus
#4
Yifang Kuang, Cenglin Xu, Yinxi Zhang, Yi Wang, Xiaohua Wu, Ying Wang, Yao Liu, Kai Zhong, Hui Cheng, Yi Guo, Shuang Wang, Meiping Ding, Zhong Chen
Positive transfer of secondary focus (PTS) refers to new epileptogenesis outside the primary focus and is minimally controlled by existing treatments. Low-frequency stimulation (LFS) has benefits on the onset of epilepsy and epileptogenesis. However, it's unclear whether LFS can retard the PTS in epilepsy. Here we found that PTS at both contralateral amygdala and ipsilateral hippocampus were promoted after the primary focus was fully kindled in rat kindling model. The promotion of PTS at the mirror focus started when the primary kindling acquisition reached focal seizures...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28333147/solute-carrier-family-12-member-5-promotes-tumor-invasion-metastasis-of-bladder-urothelial-carcinoma-by-enhancing-nf-%C3%AE%C2%BAb-mmp-7-signaling-pathway
#5
J Y Liu, Y B Dai, X Li, K Cao, D Xie, Z T Tong, Z Long, H Xiao, M K Chen, Y L Ye, B Liu, J Tan, J Tang, Z Z Xu, Y Gan, Y H Zhou, F Deng, L Y He
Solute carrier family 12 member 5 (SLC12A5), an integral membrane KCl cotransporter, which maintains chloride homeostasis in neurons, is aberrantly expressed and involved in the tumorigenesis of certain cancers. However, the clinical significance and biological role of SLC12A5 in human bladder urothelial carcinoma (BUC) remains unclear. In this study, the expression of SLC12A5 was examined in clinical specimens of primary BUC and in BUC cell lines using quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR), western blot and immunohistochemistry (IHC)...
March 23, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28301408/k-cl-cotransporter-2-mediated-cl-extrusion-determines-developmental-stage-dependent-impact-of-propofol-anesthesia-on-dendritic-spines
#6
Martin Puskarjov, Hubert Fiumelli, Adrian Briner, Timea Bodogan, Kornel Demeter, Claudia-Marvine Lacoh, Martina Mavrovic, Peter Blaesse, Kai Kaila, Laszlo Vutskits
BACKGROUND: General anesthetics potentiating γ-aminobutyric acid (GABA)-mediated signaling are known to induce a persistent decrement in excitatory synapse number in the cerebral cortex when applied during early postnatal development, while an opposite action is produced at later stages. Here, the authors test the hypothesis that the effect of general anesthetics on synaptogenesis depends upon the efficacy of GABA receptor type A (GABAA)-mediated inhibition controlled by the developmental up-regulation of the potassium-chloride (K-Cl) cotransporter 2 (KCC2)...
March 16, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28259499/chlorthalidone-versus-amlodipine-for-hypertension-in-kidney%C3%A2-transplant-recipients-treated-with-tacrolimus-a%C3%A2-randomized-crossover-trial
#7
Arthur D Moes, Dennis A Hesselink, Anton H van den Meiracker, Robert Zietse, Ewout J Hoorn
BACKGROUND: Chlorthalidone is a very effective antihypertensive drug, but it has not been studied prospectively in kidney transplant recipients with hypertension. Recent data indicate that calcineurin inhibitors activate the thiazide-sensitive sodium chloride cotransporter, providing further rationale to test thiazides in this population. STUDY DESIGN: Randomized noninferiority crossover trial (noninferiority margin, -2.8mmHg). SETTING & PARTICIPANTS: Hypertensive kidney transplant recipients using tacrolimus (median duration, 2...
March 1, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28253301/targeting-gene-expression-to-specific-cells-of-kidney-tubules-in-vivo-using-adenoviral-promoter-fragments
#8
Sumiyo Watanabe, Toru Ogasawara, Yoshifuru Tamura, Taku Saito, Toshiyuki Ikeda, Nobuchika Suzuki, Tatsuo Shimosawa, Shigeru Shibata, Ung-Il Chung, Masaomi Nangaku, Shunya Uchida
Although techniques for cell-specific gene expression via viral transfer have advanced, many challenges (e.g., viral vector design, transduction of genes into specific target cells) still remain. We investigated a novel, simple methodology for using adenovirus transfer to target specific cells of the kidney tubules for the expression of exogenous proteins. We selected genes encoding sodium-dependent phosphate transporter type 2a (NPT2a) in the proximal tubule, sodium-potassium-2-chloride cotransporter (NKCC2) in the thick ascending limb of Henle (TALH), and aquaporin 2 (AQP2) in the collecting duct...
2017: PloS One
https://www.readbyqxmd.com/read/28235805/a-kainate-receptor-subunit-promotes-the-recycling-of-the-neuron-specific-k-cl-cotransporter-kcc2-in-hippocampal-neurons
#9
Jessica C Pressey, Vivek Mahadevan, C Sahara Khademullah, Zahra Dargaei, Jonah Chevrier, Alamjeet K Chauhan, Steven J Meas, Pavel Uvarov, Matti S Airaksinen, Melanie A Woodin
Synaptic inhibition depends on a transmembrane gradient of chloride, which is set by the neuron-specific K+-Cl- cotransporter KCC2. Reduced KCC2 levels in the neuronal membrane contribute to the generation of epilepsy, neuropathic pain, and autism spectrum disorders; thus, it is important to characterize the mechanisms regulating KCC2 expression. In the present study, we determined the role of KCC2-protein interactions in regulating total and surface-membrane KCC2 expression. Using quantitative immunofluorescence in cultured mouse hippocampal neurons, we discovered that the kainate receptor subunit GluK2 and the auxiliary subunit Neto2 significantly increase the total KCC2 abundance in neurons, but that GluK2 exclusively increases the abundance of KCC2 in the surface membrane...
February 24, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28143398/a-noninvasive-optical-approach-for-assessing-chloride-extrusion-activity-of-the-k-cl-cotransporter-kcc2-in-neuronal-cells
#10
Anastasia Ludwig, Claudio Rivera, Pavel Uvarov
BACKGROUND: Cation-chloride cotransporters (CCCs) are indispensable for maintaining chloride homeostasis in multiple cell types, but K-Cl cotransporter KCC2 is the only CCC member with an exclusively neuronal expression in mammals. KCC2 is critical for rendering fast hyperpolarizing responses of ionotropic γ-aminobutyric acid and glycine receptors in adult neurons, for neuronal migration in the developing central nervous system, and for the formation and maintenance of small dendritic protrusions-dendritic spines...
January 31, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28125972/gitelman-syndrome-in-a-south-african-family-presenting-with-hypokalaemia-and-unusual-food-cravings
#11
Pieter Du Toit van der Merwe, Megan A Rensburg, William L Haylett, Soraya Bardien, M Razeen Davids
BACKGROUND: Gitelman syndrome (GS) is an autosomal recessive renal tubular disorder characterised by renal salt wasting with hypokalaemia, metabolic alkalosis, hypomagnesaemia and hypocalciuria. It is caused by mutations in SLC12A3 encoding the sodium-chloride cotransporter on the apical membrane of the distal convoluted tubule. We report a South African family with five affected individuals presenting with hypokalaemia and unusual food cravings. METHODS: The affected individuals and two unaffected first degree relatives were enrolled into the study...
January 26, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28110691/is-insulin-growth-factor-1-the-future-for-treating-autism-spectrum-disorder-and-or-schizophrenia
#12
Rami Bou Khalil
To date, no curative psychopharmacologic treatment exists for the core symptoms of autism spectrum disorder (ASD) as well as for schizophrenia. Bumatenide is a specific antagonist of the first isoform of the Na-K-Cl cotransporter (NKCC1). It is usually used as a diuretic but may also promote a decrease in intraneuronal chloride ion concentration leading to hyperpolarization in neuronal membrane and subsequent decrease in neuronal hyperexcitability. This physiologic effect has been considered to be behind the relative efficacy of bumetanide in improving symptoms of ASD and, to a lesser extent, schizophrenia...
February 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28101242/screening-and-analysis-of-breast-cancer-genes-regulated-by-the-human-mammary-microenvironment-in-a-humanized-mouse-model
#13
Mingjie Zheng, Jue Wang, Lijun Ling, Dandan Xue, Shui Wang, Yi Zhao
Tumor microenvironments play critical regulatory roles in tumor growth. Although mouse cancer models have contributed to the understanding of human tumor biology, the effectiveness of mouse cancer models is limited by the inability of the models to accurately present humanized tumor microenvironments. Previously, a humanized breast cancer model in severe combined immunodeficiency mice was established, in which human breast cancer tissue was implanted subcutaneously, followed by injection of human breast cancer cells...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28101155/the-5-ht2a-receptor-potassium-chloride-cotransporter-2-signaling-pathway-in-a-rat-incision-pain-model
#14
Rong Dong, Buwei Yu, Lijiao Chen, Weifeng Yu
Postoperative pain is a critical problem in clinical pain administration. Due to the unclear formation mechanism of postoperative pain, the treatment of postoperative pain is still in the symptomatic treatment stage and lacking satisfactory analgesic effect. Postoperative pain can be simulated by using a rat incision pain model. We observed changes in pain-related behavior of rats affected by the 5-hydroxytryptamine 2A receptor (5-HT2AR) agonist, TCB-2, and antagonist, ketanserin, through intrathecal delivery...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28094030/glucocorticoid-induced-leucine-zipper-protein-regulates-sodium-and-potassium-balance-in-the-distal-nephron
#15
Priyanka Rashmi, GianLuca Colussi, Michael Ng, Xinhao Wu, Atif Kidwai, David Pearce
Glucocorticoid induced leucine zipper protein (GILZ) is an aldosterone-regulated protein that controls sodium transport in cultured kidney epithelial cells. Mice lacking GILZ have been reported previously to have electrolyte abnormalities. However, the mechanistic basis has not been explored. Here we provide evidence supporting a role for GILZ in modulating the balance of renal sodium and potassium excretion by regulating the sodium-chloride cotransporter (NCC) activity in the distal nephron. Gilz(-/-) mice have a higher plasma potassium concentration and lower fractional excretion of potassium than wild type mice...
January 13, 2017: Kidney International
https://www.readbyqxmd.com/read/28043731/acetazolamide-and-hydrochlorothiazide-followed-by-furosemide-versus-furosemide-and-hydrochlorothiazide-followed-by-furosemide-for-the-treatment-of-adults-with-nephrotic-edema-a-randomized-trial
#16
Mohammad Amin Fallahzadeh, Banafshe Dormanesh, Mohammad Kazem Fallahzadeh, Jamshid Roozbeh, Mohammad Hossein Fallahzadeh, Mohammad Mahdi Sagheb
BACKGROUND: Nephrotic edema is considered refractory if it does not respond to maximum or near-maximum doses of loop diuretics. This condition can be treated with loop diuretics and thiazides. However, animal studies show that the simultaneous downregulation of pendrin with acetazolamide and inhibition of the sodium-chloride cotransporter with hydrochlorothiazide generates significant diuresis, and furosemide administration following a pendrin inhibitor potentiates furosemide's diuretic effect...
March 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28027400/elevated-intracellular-na-concentrations-in-developing-spinal-neurons
#17
Casie Lindsly, Carlos Gonzalez-Islas, Peter Wenner
Over 25 years ago it was first reported that intracellular chloride levels (Cl(-)in ) were higher in developing neurons than in maturity. This finding has had significant implications for understanding the excitability of developing networks and recognizing the underlying causes of hyperexcitability associated with disease and neural injury. While there is some evidence that intracellular sodium levels (Na(+)in ) change during the development of non-neural cells, it has largely been assumed that Na(+)in is the same in developing and mature neurons...
March 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28009968/the-dielectrophoretic-disassociation-of-chloride-ions-and-the-influence-on-diamagnetic-anisotropy-in-cell-membranes
#18
Marcy C Purnell, Terence J Skrinjar
Chloride channels represent ubiquitously expressed proteins that regulate fundamental cellular processes including membrane potential, maintenance of intracellular pH, and regulation of cell volume. However, mechanisms to modulate this large family of ion channels have remained elusive to date. This large chloride channel family does not appear to operate with selectivity similar to the sodium and potassium channels. These unique channels appear to be bi-directional cotransporters of two or more different molecules or ions across a bilayer phospholipid membrane...
November 2016: Discovery Medicine
https://www.readbyqxmd.com/read/28003083/gitelman-syndrome-consensus-and-guidance-from-a-kidney-disease-improving-global-outcomes-kdigo-controversies-conference
#19
Anne Blanchard, Detlef Bockenhauer, Davide Bolignano, Lorenzo A Calò, Etienne Cosyns, Olivier Devuyst, David H Ellison, Fiona E Karet Frankl, Nine V A M Knoers, Martin Konrad, Shih-Hua Lin, Rosa Vargas-Poussou
Gitelman syndrome (GS) is a rare, salt-losing tubulopathy characterized by hypokalemic metabolic alkalosis with hypomagnesemia and hypocalciuria. The disease is recessively inherited, caused by inactivating mutations in the SLC12A3 gene that encodes the thiazide-sensitive sodium-chloride cotransporter (NCC). GS is usually detected during adolescence or adulthood, either fortuitously or in association with mild or nonspecific symptoms or both. The disease is characterized by high phenotypic variability and a significant reduction in the quality of life, and it may be associated with severe manifestations...
January 2017: Kidney International
https://www.readbyqxmd.com/read/27986254/inhibition-of-na-k-cl-cotransporter-isoform-1-reduces-lung-injury-induced-by-ischemia-reperfusion
#20
Chou-Chin Lan, Chung-Kan Peng, Shih-En Tang, Hsueh-Ju Lin, Sung-Sen Yang, Chin-Pyng Wu, Kun-Lun Huang
OBJECTIVES: Ischemia-reperfusion acute lung injury is characterized by increased vascular permeability, lung edema, and neutrophil sequestration. Ischemia-reperfusion acute lung injury occurs in lung transplantation and other major surgical procedures. Effective regulation of alveolar fluid balance is critical for pulmonary edema. Sodium-potassium-chloride co-transporter regulates alveolar fluid and is associated with inflammation. We hypothesized that sodium-potassium-chloride co-transporter is important in ischemia-reperfusion acute lung injury...
January 2017: Journal of Thoracic and Cardiovascular Surgery
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