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https://www.readbyqxmd.com/read/28433802/role-of-environmental-stressors-in-determining-the-developmental-outcome-of-neonatal-anesthesia
#1
Ling-Sha Ju, Jiao-Jiao Yang, Nikolaus Gravenstein, Christoph N Seubert, Timothy E Morey, Colin Sumners, Terrie Vasilopoulos, Jian-Jun Yang, Anatoly E Martynyuk
BACKGROUND: The majority of studies evaluating neurocognition in humans who had procedures under anesthesia early in life found long-term deficits even though the typical anesthesia duration normalized to the human life span is much shorter than that shown to induce developmental abnormalities in rodents. Therefore, we studied whether subsequent environmental stressors contribute to deficiencies programmed by a brief neonatal etomidate exposure. METHODS: Postnatal days (P) 4, 5, or 6, Sprague-Dawley rats, pretreated with vehicle or the Na(+)-K(+)-2Cl(-) (NKCC1) inhibitor, bumetanide, received two injections of etomidate resulting in anesthesia for 2h...
April 7, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28417963/loop-diuretics-affect-skeletal-myoblast-differentiation-and-exercise-induced-muscle-hypertrophy
#2
Shintaro Mandai, Susumu Furukawa, Manami Kodaka, Yutaka Hata, Takayasu Mori, Naohiro Nomura, Fumiaki Ando, Yutaro Mori, Daiei Takahashi, Yuki Yoshizaki, Yuri Kasagi, Yohei Arai, Emi Sasaki, Sayaka Yoshida, Yasuro Furuichi, Nobuharu L Fujii, Eisei Sohara, Tatemitsu Rai, Shinichi Uchida
Muscle wasting or sarcopenia contributes to morbidity and mortality in patients with cancer, renal failure, or heart failure, and in elderly individuals. Na(+)-K(+)-2Cl(-) cotransporter 1 (NKCC1) is highly expressed in mammalian skeletal muscle, where it contributes to the generation of membrane ion currents and potential. However, the physiologic function of NKCC1 in myogenesis is unclear. We investigated this issue using the NKCC1 inhibitors bumetanide and furosemide, which are commonly used loop diuretics...
April 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28411035/altered-ion-transport-in-normal-human-bronchial-epithelial-cells-following-exposure-to-chemically-distinct-metal-welding-fume-particles
#3
Jeffrey S Fedan, Janet A Thompson, Terence G Meighan, Patti C Zeidler-Erdely, James M Antonini
Welding fume inhalation causes pulmonary toxicity, including susceptibility to infection. We hypothesized that airway epithelial ion transport is a target of fume toxicity, and investigated the effects of fume particulates from manual metal arc-stainless steel (MMA-SS) and gas metal arc-mild steel (GMA-MS) on ion transport in normal human bronchial epithelium (NHBE) cultured in air-interface. MMA-SS particles, more soluble than GMA-MS particles, contain Cr, Ni, Fe and Mn; GMA-MS particles contain Fe and Mn...
April 12, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28291262/effects-of-bumetanide-on-neurobehavioral-function-in-children-and-adolescents-with-autism-spectrum-disorders
#4
E Lemonnier, N Villeneuve, S Sonie, S Serret, A Rosier, M Roue, P Brosset, M Viellard, D Bernoux, S Rondeau, S Thummler, D Ravel, Y Ben-Ari
In animal models of autism spectrum disorder (ASD), the NKCC1 chloride-importer inhibitor bumetanide restores physiological (Cl(-))i levels, enhances GABAergic inhibition and attenuates electrical and behavioral symptoms of ASD. In an earlier phase 2 trial; bumetanide reduced the severity of ASD in children and adolescents (3-11 years old). Here we report the results of a multicenter phase 2B study primarily to assess dose/response and safety effects of bumetanide. Efficacy outcome measures included the Childhood Autism Rating Scale (CARS), the Social Responsive Scale (SRS) and the Clinical Global Impressions (CGI) Improvement scale (CGI-I)...
March 14, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28213919/diuretic-sensitive-electroneutral-na-movement-and-temperature-effects-on-central-axons
#5
Meneka Kanagaratnam, Christopher Pendleton, Danilo Almeida Souza, Joseph Pettit, James Howells, Mark D Baker
Raising the temperature of optic nerve from room temperature to near physiological has effects on the threshold, refractoriness and superexcitability of the shortest latency (fast, F) nerve fibres, consistent with hyperpolarization. The temperature dependence of peak impulse latency was weakened at temperatures above 30°C suggesting a temperature sensitive process that slows impulse propagation. The amplitude of the supramaximal compound action potential gets larger on warming, whereas in the presence of bumetanide and amiloride (blockers of electroneutral Na(+) movement), the action potential amplitude consistently falls...
February 17, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28192112/multiple-blood-brain-barrier-transport-mechanisms-limit-bumetanide-accumulation-and-therapeutic-potential-in-the-mammalian-brain
#6
Kerstin Römermann, Maren Fedrowitz, Philip Hampel, Edith Kaczmarek, Kathrin Töllner, Thomas Erker, Douglas H Sweet, Wolfgang Löscher
There is accumulating evidence that bumetanide, which has been used over decades as a potent loop diuretic, also exerts effects on brain disorders, including autism, neonatal seizures, and epilepsy, which are not related to its effects on the kidney but rather mediated by inhibition of the neuronal Na-K-Cl cotransporter isoform NKCC1. However, following systemic administration, brain levels of bumetanide are typically below those needed to inhibit NKCC1, which critically limits its clinical use for treating brain disorders...
February 10, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28161194/bumetanide-reduce-the-seizure-susceptibility-induced-by-pentylenetetrazol-via-inhibition-of-aberrant-hippocampal-neurogenesis-in-neonatal-rats-after-hypoxia-ischemia
#7
Jiang-Jian Hu, Xing-Liang Yang, Wen-Di Luo, Song Han, Jun Yin, Wan-Hong Liu, Xiao-Hua He, Bi-Wen Peng
Hypoxia-ischemia brain damage (HIBD) is one of prevalent causes of neonatal mortality and morbidity. Our data demonstrated that hypoxia-ischemia (HI) induced Na(+)-K(+)-Cl(-)-co-transporter 1 (NKCC1) increasing in hippocampus. Previous studies demonstrated that NKCC1 regulates various stages of neurogenesis. In this study, we studied the role of increased NKCC1 in regulating of HI-induced neurogenesis. HIBD model was established in 7days old Sprague-Dawley rat pup, and the expression of NKCC1 was detected by western blot and qPCR...
February 2, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28159275/a-graphene-tip-coupled-with-liquid-chromatography-tandem-mass-spectrometry-for-the-determination-of-four-synthetic-adulterants-in-slimming-supplements
#8
Renyao Jin, Linqiu Li, Lianxian Guo, Weiqiao Li, Qing Shen
Slimming supplements were popularly sold online driven by the increasement of obesity and the development of social networking platform. However, events of drug abuse in slimming supplements were also frequently reported. In this study, a graphene tip solid-phase extraction (Gtip SPE) and ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method was established for determining fenfluramine, phenolphthalein, bumetanide, and sibutramine in slimming supplements. It was validated in terms of linearity (0...
June 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28152000/bumetanide-increases-cl-dependent-short-circuit-current-in-late-distal-colon-evidence-for-the-presence-of-active-electrogenic-cl-absorption
#9
Lieqi Tang, Xiefan Fang, Steven P Winesett, Catherine Y Cheng, Henry J Binder, Scott A Rivkees, Sam X Cheng
Mammalian colonic epithelia consist of cells that are capable of both absorbing and secreting Cl-. The present studies employing Ussing chamber technique identified two opposing short-circuit current (Isc) responses to basolateral bumetanide in rat distal colon. Apart from the transepithelial Cl--secretory Isc in early distal colon that was inhibited by bumetanide, bumetanide also stimulated Isc in late distal colon that had not previously been identified. Since bumetanide inhibits basolateral Na+-K+-2Cl- cotransporter (NKCC) in crypt cells and basolateral K+-Cl- cotransporter (KCC) in surface epithelium, we proposed this stimulatory Isc could represent a KCC-mediated Cl- absorptive current...
2017: PloS One
https://www.readbyqxmd.com/read/28111749/progress-report-on-new-antiepileptic-drugs-a-summary-of-the-thirteenth-eilat-conference-on-new-antiepileptic-drugs-and-devices-eilat-xiii
#10
REVIEW
Meir Bialer, Svein I Johannessen, René H Levy, Emilio Perucca, Torbjörn Tomson, H Steve White
The Thirteenth Eilat Conference on New Antiepileptic Drugs and Devices (EILAT XIII) took place in Madrid, Spain, on June 26-29, 2016, and was attended by >200 delegates from 31 countries. The present Progress Report provides an update on experimental and clinical results for drugs presented at the Conference. Compounds for which summary data are presented include an AED approved in 2016 (brivaracetam), 12 drugs in phase I-III clinical development (adenosine, allopregnanolone, bumetanide, cannabidiol, cannabidivarin, 2-deoxy-d-glucose, everolimus, fenfluramine, huperzine A, minocycline, SAGE-217, and valnoctamide) and 6 compounds or classes of compounds for which only preclinical data are available (bumetanide derivatives, sec-butylpropylacetamide, FV-082, 1OP-2198, NAX 810-2, and SAGE-689)...
January 23, 2017: Epilepsia
https://www.readbyqxmd.com/read/28110691/is-insulin-growth-factor-1-the-future-for-treating-autism-spectrum-disorder-and-or-schizophrenia
#11
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/28105769/renal-tubular-resistance-is-the-primary-driver-for-loop-diuretic-resistance-in-acute-heart-failure
#12
Jozine M Ter Maaten, Veena S Rao, Jennifer S Hanberg, F Perry Wilson, Lavanya Bellumkonda, Mahlet Assefa, J Sam Broughton, Julie D'Ambrosi, W H Wilson Tang, Kevin Damman, Adriaan A Voors, David H Ellison, Jeffrey M Testani
BACKGROUND: Loop diuretic resistance is a common barrier to effective decongestion in acute heart failure (AHF), and is associated with poor outcome. Specific mechanisms underlying diuretic resistance are currently unknown in contemporary AHF patients. We therefore aimed to determine the relative importance of defects in diuretic delivery vs. renal tubular response in determining diuretic response (DR) in AHF. METHODS AND RESULTS: Fifty AHF patients treated with intravenous bumetanide underwent a 6-h timed urine collection for sodium and bumetanide clearance...
January 19, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28087701/the-ubiquitin-ligase-nedd4l-regulates-the-na-k-2cl-co-transporter-nkcc1-slc12a2-in-the-colon
#13
Chong Jiang, Hiroshi Kawabe, Daniela Rotin
The ubiquitin ligase Nedd4-like (Nedd4L, or Nedd4-2) binds to and regulates stability of the epithelial Na(+) channel (ENaC) in salt-absorbing epithelia in the kidney, lung, and other tissues. Its role in the distal colon, which also absorbs salt and fluid and expresses ENaC, is unknown. Using a conditional knock-out approach to knock out Nedd4L in mice intestinal epithelium (Nedd4L(f/f) ;Vil-Cre(ERT2) ) we show here that Nedd4L depletion leads to a higher steady-state short circuit current (Isc) in mouse distal colon tissue relative to controls...
February 24, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28074534/depolarizing-gaba-contributes-to-glutamatergic-network-rewiring-in-epilepsy
#14
Nazim Kourdougli, Christophe Pellegrino, Juho-Matti Renko, Stanislav Khirug, Geneviève Chazal, Tiina-Kaisa Kukko-Lukjanov, Sari E Lauri, Jean-Luc Gaiarsa, Liang Zhou, Angélique Peret, Eero Castrén, Raimo Kalevi Tuominen, Valérie Crépel, Claudio Rivera
OBJECTIVE: Rewiring of excitatory glutamatergic neuronal circuits is a major abnormality in epilepsy. Besides the rewiring of excitatory circuit, an abnormal depolarizing GABAergic drive has been hypothesized to participate in the epileptogenic processes. However, a remaining clinically relevant question is whether early post Status Epilepticus (SE) evoked chloride dysregulation is important for the remodeling of aberrant glutamatergic neuronal circuit. METHODS: Osmotic mini-pumps were used to infuse intracerebrally a specific inhibitor of depolarizing GABAergic transmission as well as a functionally blocking antibody towards the pan-neurotrophin receptor p75 (p75(NTR) )...
January 11, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28066142/participation-of-central-gabaa-receptors-in-the-trigeminal-processing-of-mechanical-allodynia-in-rats
#15
Min Ji Kim, Young Hong Park, Kui Ye Yang, Jin Sook Ju, Yong Chul Bae, Seong Kyu Han, Dong Kuk Ahn
Here we investigated the central processing mechanisms of mechanical allodynia and found a direct excitatory link with low-threshold input to nociceptive neurons. Experiments were performed on male Sprague-Dawley rats weighing 230-280 g. Subcutaneous injection of interleukin 1 beta (IL-1β) (1 ng/10 µL) was used to produce mechanical allodynia and thermal hyperalgesia. Intracisternal administration of bicuculline, a gamma aminobutyric acid A (GABAA) receptor antagonist, produced mechanical allodynia in the orofacial area under normal conditions...
January 2017: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/28057537/the-chloride-co-transporters-nkcc1-and-kcc2-in-experimental-autoimmune-encephalomyelitis-eae
#16
Muhammad Saad Yousuf, Kasia Zubkow, Gustavo Tenorio, Bradley Kerr
Patients with multiple sclerosis (MS) often complain of neuropathic pain. According to the Gate Control Theory of Pain, spinal networks of GABAergic inhibitory interneurons are important in modulating nociceptive inputs from the periphery. Na+-K+-2Cl- co-transporter 1 (NKCC1) and K+-Cl- co-transporter 2 (KCC2) generally dictate the tone of GABA/glycine inhibition by regulating intracellular chloride concentrations. In this study, we investigated the role of NKCC1 and KCC2 in neuropathic pain observed in the animal model, experimental autoimmune encephalomyelitis (EAE), a commonly used model to study the pathophysiology of MS...
March 6, 2017: Neuroscience
https://www.readbyqxmd.com/read/28007722/physical-compatibility-of-isavuconazonium-sulfate-with-select-i-v-drugs-during-simulated-y-site-administration
#17
Wonhee So, Liz Kim, Abrar K Thabit, David P Nicolau, Joseph L Kuti
PURPOSE: The physical compatibility of isavuconazonium sulfate with 95 i.v. drugs during simulated Y-site administration was studied. METHODS: Isavuconazonium sulfate for injection and all other drugs were reconstituted according to the manufacturer's recommendation and further diluted with 0.9% sodium chloride injection or 5% dextrose injection to a final concentration (1.5 mg/mL for isavuconazonium sulfate and standard concentrations used clinically for other drugs)...
January 1, 2017: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/27986254/inhibition-of-na-k-cl-cotransporter-isoform-1-reduces-lung-injury-induced-by-ischemia-reperfusion
#18
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
https://www.readbyqxmd.com/read/27926982/trpv4-channels-mediate-na-k-cl-co-transporter-induced-brain-edema-after-traumatic-brain-injury
#19
Kwok-Tung Lu, Tai-Chun Huang, Ya-Hsin Tsai, Yi-Ling Yang
Na(+) -K(+) -2Cl(-) co-transporter (NKCC1) plays an important role in traumatic brain injury (TBI)-induced brain edema via the mitogen-activated protein kinases (MAPK) cascade. The transient receptor potential vanilloid type 4 (TRPV4) channel participates in neurogenic inflammation, pain transmission and edema. In this study, we investigated the relationship between NKCC1 and TRPV4 and the related signaling pathways in TBI-induced brain edema and neuronal damage. TBI was induced by the calibrated weight-drop device...
December 7, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27900370/a-patient-with-multisystem-dysfunction-carries-a-truncation-mutation-in-human-slc12a2-the-gene-encoding-the-na-k-2cl-cotransporter-nkcc1
#20
Eric Delpire, Lynne Wolfe, Bianca Flores, Rainelli Koumangoye, Cara C Schornak, Salma Omer, Barbara Pusey, Christopher Lau, Thomas Markello, David R Adams
This study describes a 13-yr-old girl with orthostatic intolerance, respiratory weakness, multiple endocrine abnormalities, pancreatic insufficiency, and multiorgan failure involving the gut and bladder. Exome sequencing revealed a de novo, loss-of-function allele in SLC12A2, the gene encoding the Na-K-2Cl cotransporter-1. The 11-bp deletion in exon 22 results in frameshift (p.Val1026Phefs*2) and truncation of the carboxy-terminal tail of the cotransporter. Preliminary studies in heterologous expression systems demonstrate that the mutation leads to a nonfunctional transporter, which is expressed and trafficked to the plasma membrane alongside wild-type NKCC1...
November 2016: Cold Spring Harbor Molecular Case Studies
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