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https://www.readbyqxmd.com/read/28924368/the-effects-of-perioperative-anesthesia-and-analgesia-on-immune-function-in-patients-undergoing-breast-cancer-resection-a-prospective-randomized-study
#1
Jin Sun Cho, Mi-Hyang Lee, Seung Il Kim, Seho Park, Hyung Seok Park, Ein Oh, Jong Ho Lee, Bon-Nyeo Koo
Introduction: Perioperative anesthesia and analgesia exacerbate immunosuppression in immunocompromised cancer patients. The natural killer (NK) cell is a critical part of anti-tumor immunity. We compared the effects of two different anesthesia and analgesia methods on the NK cell cytotoxicity (NKCC) in patients undergoing breast cancer surgery. Methods: Fifty patients undergoing breast cancer resection were randomly assigned to receive propofol-remifentanil anesthesia with postoperative ketorolac analgesia (Propofol-ketorolac groups) or sevoflurane-remifentanil anesthesia with postoperative fentanyl analgesia (Sevoflurane-fentanyl group)...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28923771/differential-expression-of-putative-sodium-dependent-cation-chloride-cotransporters-in-aedes-aegypti
#2
Peter M Piermarini, Daniel C Akuma, John C Crow, Taylor L Jamil, Willa G Kerkhoff, Kenyatta C M F Viel, Christopher M Gillen
The yellow fever mosquito, Aedes aegypti, has three genes that code for proteins with sequence similarity to vertebrate Na(+)-K(+)-Cl(-) cotransporters (NKCCs) of the solute-linked carrier 12 superfamily of cation-chloride cotransporters (CCCs). We hypothesized that these mosquito NKCC orthologues have diverged to perform distinct roles in salt secretion and absorption. In phylogenetic analyses, one protein (aeNKCC1) groups with a Drosophila melanogaster NKCC that mediates salt secretion whereas two others (aeCCC2 and aeCCC3) group with a Drosophila transporter that is not functionally characterized...
December 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28852583/comparative-molecular-analyses-of-select-ph-and-osmoregulatory-genes-in-three-freshwater-crayfish-cherax-quadricarinatus-c-destructor-and-c-cainii
#3
Muhammad Y Ali, Ana Pavasovic, Lalith K Dammannagoda, Peter B Mather, Peter J Prentis
Systemic acid-base balance and osmotic/ionic regulation in decapod crustaceans are in part maintained by a set of transport-related enzymes such as carbonic anhydrase (CA), Na(+)/K(+)-ATPase (NKA), H(+)-ATPase (HAT), Na(+)/K(+)/2Cl(-) cotransporter (NKCC), Na(+)/Cl(-)/HCO[Formula: see text] cotransporter (NBC), Na(+)/H(+) exchanger (NHE), Arginine kinase (AK), Sarcoplasmic Ca(+2)-ATPase (SERCA) and Calreticulin (CRT). We carried out a comparative molecular analysis of these genes in three commercially important yet eco-physiologically distinct freshwater crayfish, Cherax quadricarinatus, C...
2017: PeerJ
https://www.readbyqxmd.com/read/28829424/a-flow-cytometry-based-cytotoxicity-assay-for-the-assessment-of-human-nk-cell-activity
#4
Fadi Kandarian, Gemalene M Sunga, Diana Arango-Saenz, Maura Rossetti
Within the innate immune system, effector lymphocytes known as natural killer (NK) cells play an essential role in host defense against aberrant cells, specifically eliminating tumoral and virally infected cells. Approximately 30 known monogenic defects, together with a host of other pathological conditions, cause either functional or classic NK cell deficiency, manifesting in reduced or absent cytotoxic activity. Historically, cytotoxicity has been investigated with radioactive methods, which are cumbersome, expensive and potentially hazardous...
August 9, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28818393/the-modulation-of-the-phosphorylation-status-of-nkcc1-in-organ-cultured-bovine-lenses-implications-for-the-regulation-of-fiber-cell-and-overall-lens-volume
#5
Irene Vorontsova, Paul J Donaldson, Zhiying Kong, Chiharu Wickremesinghe, Leo Lam, Julie C Lim
In this study we have used an antibody that specifically detects the phosphorylation status of the Sodium/Potassium/2 Chloride Cotransporter (NKCC1) to study whether the activity of NKCC1 can be regulated in organ cultured bovine lenses. Western blotting was first used to confirm the expression of NKCC1, phosphorylated NKCC1 (NKCC1-P) and the regulatory kinases WNK/SPAK and phosphatases PP1/PP2A in bovine lenses at the protein level. Changes to NKCC1-P status were then assessed by organ culturing bovine lenses in either isotonic, hypertonic or hypotonic solutions in the presence or absence of the NKCC inhibitor, bumetanide, or phosphatase inhibitors okadaic acid and calyculin A...
August 14, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28522431/wnk1-and-p38-mapk-distribution-in-ionocytes-and-accessory-cells-of-euryhaline-teleost-fish-implies-ionoregulatory-function
#6
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 the sodium potassium 2 chloride cotransporter (NKCC) in the basolateral membrane...
July 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28482023/understanding-the-genomic-basis-of-adaptive-response-to-variable-osmotic-niches-in-freshwater-prawns-a-comparative-intraspecific-rna-seq-analysis-of-macrobrachium-australiense
#7
Azam Moshtaghi, Md Lifat Rahi, Peter B Mather, David A Hurwood
Understanding the molecular basis of adaptive response to variable environmental conditions is a central goal of evolutionary biology. Here, we sought to identify potential outlier single nucleotide polymorphisms (SNPs) in 3 wild populations of a freshwater prawn (Macrobrachium australiense) that are exposed to differing osmotic niches by using a comparative transcriptomics approach. De novo assembly of approximately 542 million (75 nt) pair end reads collected from 10 individuals revealed 123396 longer contigs/transcripts of variable length, that showed 97...
July 1, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/28408927/activities-of-amphioxus-gh-like-protein-in-osmoregulation-insight-into-origin-of-vertebrate-gh-family
#8
Mengyang Li, Chengyan Jiang, Yu Zhang, Shicui Zhang
GH is known to play an important role in both growth promotion and osmoregulation in vertebrates. We have shown that amphioxus possesses a single GH-like hormone (GHl) gene encoding a functional protein capable of promoting growth. However, if GHl can mediate osmoregulation remains open. Here, we demonstrated clearly that GHl increased not only the survival rate of amphioxus but also the muscle moisture under high salinity. Moreover, GHl induced the expression of both the ion transporter Na(+)-K(+)-ATPase (NKA) and Na(+)-K(+)-2Cl(-) cotransporter (NKCC) in the gill as well as the mediator of GH action IGFl in the hepatic caecum, indicating that GHl fulfills this osmoregulatory activity through the same mechanisms of vertebrate GH...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28223394/primary-adrenal-insufficiency-is-associated-with-impaired-natural-killer-cell-function-a-potential-link-to-increased-mortality
#9
Irina Bancos, Jon Hazeldine, Vasileios Chortis, Peter Hampson, Angela E Taylor, Janet M Lord, Wiebke Arlt
OBJECTIVE: Mortality in patients with primary adrenal insufficiency (PAI) is significantly increased, with respiratory infections as a major cause of death. Moreover, patients with PAI report an increased rate of non-fatal infections. Neutrophils and natural killer (NK) cells are innate immune cells that provide frontline protection against invading pathogens. Thus, we compared the function and phenotype of NK cells and neutrophils isolated from PAI patients and healthy controls to ascertain whether altered innate immune responses could be a contributory factor for the increased susceptibility of PAI patients to infection...
April 2017: European Journal of Endocrinology
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
#10
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/28066142/participation-of-central-gabaa-receptors-in-the-trigeminal-processing-of-mechanical-allodynia-in-rats
#11
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
#12
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/27932986/role-of-quercetin-in-modulating-chloride-transport-in-the-intestine
#13
Bo Yu, Yu Jiang, Lingling Jin, Tonghui Ma, Hong Yang
Epithelial chloride channels provide the pathways for fluid secretion in the intestine. Cystic fibrosis transmembrane conductance regulator (CFTR) and calcium-activated chloride channels (CaCCs) are the main chloride channels in the luminal membrane of enterocytes. These transmembrane proteins play important roles in many physiological processes. In this study, we have identified a flavonoid quercetin as a modulator of CaCC chloride channel activity. Fluorescence quenching assay showed that quercetin activated Cl(-) transport in a dose-dependent manner, with EC50 ~37 μM...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27903841/influence-of-a-moderate-intensity-exercise-program-on-early-nk-cell-immune-recovery-in-pediatric-patients-after-reduced-intensity-hematopoietic-stem-cell-transplantation
#14
Carolina Chamorro-Viña, Jaime Valentín, Lucía Fernández, Marta González-Vicent, Margarita Pérez-Ruiz, Alejandro Lucía, S Nicole Culos-Reed, Miguel Ángel Díaz, Antonio Pérez-Martínez
INTRODUCTION: After allogeneic hematopoietic stem cell transplantation (HSCT), NK cell reconstitution, which is crucial for positive outcomes, is dominated by the CD56(bright) subset with low NK cell cytotoxicity (NKCC) activity. Moderate exercise has been described as a potent NK cell stimulus in adults with cancer. PURPOSE: To determine the effects of a moderate-intensity exercise program on NK cell recovery early after HSCT and the feasibility of this intervention...
November 30, 2016: Integrative Cancer Therapies
https://www.readbyqxmd.com/read/27881573/intestinal-na-k-2cl-cotransporter-2-plays-a-crucial-role-in-hyperosmotic-transitions-of-a-euryhaline-teleost
#15
Andrew J Esbaugh, Brett Cutler
Euryhaline fishes, such as the red drum (Sciaenops ocellatus), must quickly transition between hyperosmotic and hypoosmotic physiological strategies. When freshwater individuals transition to seawater they are exposed to increased diffusive water loss and ion gain. To maintain osmoregulatory balance these animals must drink and absorb seawater through the intestine, followed by ion excretion at the gills. The ability of fishes to transition between strategies can limit the magnitude of osmotic shock that can be tolerated...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27881572/the-roles-of-the-na-k-atpase-nkcc-and-k-channels-in-regulating-local-sweating-and-cutaneous-blood-flow-during-exercise-in-humans-in%C3%A2-vivo
#16
Jeffrey C Louie, Naoto Fujii, Robert D Meade, Glen P Kenny
Na(+)/K(+)-ATPase has been shown to regulate the sweating and cutaneous vascular responses during exercise; however, similar studies have not been conducted to assess the roles of the Na-K-2Cl co-transporter (NKCC) and K(+) channels. Additionally, it remains to be determined if these mechanisms underpinning the heat loss responses differ with exercise intensity. Eleven young (24 ± 4 years) males performed three 30-min semirecumbent cycling bouts at low (30% VO2peak), moderate (50% VO2peak), and high (70% VO2peak) intensity, respectively, each separated by 20-min recovery periods...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27821737/quasimodo-mediates-daily-and-acute-light-effects-on-drosophila-clock-neuron-excitability
#17
Edgar Buhl, Adam Bradlaugh, Maite Ogueta, Ko-Fan Chen, Ralf Stanewsky, James J L Hodge
We have characterized a light-input pathway regulating Drosophila clock neuron excitability. The molecular clock drives rhythmic electrical excitability of clock neurons, and we show that the recently discovered light-input factor Quasimodo (Qsm) regulates this variation, presumably via an Na(+), K(+), Cl(-) cotransporter (NKCC) and the Shaw K(+) channel (dKV3.1). Because of light-dependent degradation of the clock protein Timeless (Tim), constant illumination (LL) leads to a breakdown of molecular and behavioral rhythms...
November 22, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27742704/na-k-cl-cotransporter-nkcc-maintains-the-chloride-gradient-to-sustain-pacemaker-activity-in-interstitial-cells-of-cajal
#18
Mei Hong Zhu, Tae Sik Sung, Masaaki Kurahashi, Lauren E O'Kane, Kate O'Driscoll, Sang Don Koh, Kenton M Sanders
Interstitial cells of Cajal (ICC) generate electrical slow waves by coordinated openings of ANO1 channels, a Ca(2+)-activated Cl(-) (CaCC) conductance. Efflux of Cl(-) during slow waves must be significant, as there is high current density during slow-wave currents and slow waves are of sufficient magnitude to depolarize the syncytium of smooth muscle cells and PDGFRα(+) cells to which they are electrically coupled. We investigated how the driving force for Cl(-) current is maintained in ICC. We found robust expression of Slc12a2 (which encodes an Na(+)-K(+)-Cl(-) cotransporter, NKCC1) and immunohistochemical confirmation that NKCC1 is expressed in ICC...
December 1, 2016: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/27591837/molecular-characterization-of-a-cdna-encoding-na-k-2cl-cotransporter-in-the-gill-of-mud-crab-scylla-paramamosain-during-the-molt-cycle-implication-of-its-function-in-osmoregulation
#19
Bin-Peng Xu, Dan-Dan Tu, Mao-Cang Yan, Miao-An Shu, Qing-Jun Shao
Although iono-regulatory processes are critical for survival of crustaceans during the molt cycle, the mechanisms involved are still not clear. The Na(+)/K(+)/2Cl(-) cotransporter (NKCC), a SLC12A family protein that transports Na(+), K(+) and 2Cl(-) into cells, is essential for cell ionic and osmotic regulation. To better understand the role of NKCC in the molt osmoregulation, we cloned and characterized a NKCC gene from the mud crab, Scylla paramamosain (designated as SpNKCC). The predicted SpNKCC protein is well conserved, and phylogenetic analysis revealed that this protein was clustered with crustacean NKCC...
January 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/27421237/volume-regulation-of-intestinal-cells-of-echinoderms-putative-role-of-ion-transporters-na-k-atpase-and-nkcc
#20
Giovanna C Castellano, Marta M Souza, Carolina A Freire
Echinoderms are exclusively marine osmoconformer invertebrates. Some species occupy the challenging intertidal region. Upon salinity changes, the extracellular osmotic concentration of these animals also varies, exposing tissues and cells to osmotic challenges. Cells and tissues may then respond with volume regulation mechanisms, which involve transport of ions and water into and/or out of the cells, through ion transporters, such as the Na(+)/K(+)-ATPase and NKCC. The goal of this study was to relate the cell volume regulation capacity of echinoderm intestinal cells Na(+)/K(+)-ATPase and NKCC activities, in three echinoderm species: Holothuria grisea, Arbacia lixula, and Echinometra lucunter...
November 2016: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
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