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https://www.readbyqxmd.com/read/28294314/generation-of-precursor-immature-and-mature-murine-b1-cell-lines-from-c-myc-bcl-xl-overexpressing-pre-bi-cells
#1
Inge Wolf, Corinne Bouquet, Friederike Naumann, Fritz Melchers
Deregulated expression of c-myc and bcl-xL is long known to generate transformed B cells in humans and mice. We overexpressed these genes to induce in vitro and in vivo differentiation of fetal liver-derived mouse pre-BI cells to B1-lineage pre-BII-like, immature and mature B-cell lines and to Ig-secreting cells. In vitro, doxycycline-controlled c-myc/bcl-xL-overexpressing CD19(+) CD93(+) c-kikt(+) IgM(-) pre-BI cells differentiate to and survive as CD19(+) CD93(+) c-kit(-) IgM(+) immature B1 cells. Timed CpG-stimulation of these oncogene-overexpressing pre-B or immature B1 cells generates either CD19(+) CD93(low) c-kit(-) IgM(-) SLC(-) pre-BII-like, or IgM(+) MHCII(+) CD73(+) CD80(+) CD40(+) mature B1-cell lines and IgM-secreting B1 cells in vitro and fixes their state of differentiation...
March 10, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28286648/new-approach-to-assess-sperm-dna-fragmentation-dynamics-fine-tuning-mathematical-models
#2
Isabel Ortiz, Jesús Dorado, Jane Morrell, Jaime Gosálvez, Francisco Crespo, Juan M Jiménez, Manuel Hidalgo
BACKGROUND: Sperm DNA fragmentation (sDF) has been proved to be an important parameter in order to predict in vitro the potential fertility of a semen sample. Colloid centrifugation could be a suitable technique to select those donkey sperm more resistant to DNA fragmentation after thawing. Previous studies have shown that to elucidate the latent damage of the DNA molecule, sDF should be assessed dynamically, where the rate of fragmentation between treatments indicates how resistant the DNA is to iatrogenic damage...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28281475/single-incision-laparoscopic-cholecystectomy-less-scar-less-pain
#3
Shantanu Tyagi, Rajeev Sinha, Aarti Tyagi
Context and Aims: Our study aims to evaluate the post-operative pain and cosmesis of single-incision laparoscopic cholecystectomy (SILC) in comparison with the standard, 3-port laparoscopic cholecystectomy (SLC) with respect to the length of incision, cosmetic scores, post-operative pain scores and duration of hospital stay. SETTINGS AND DESIGN: This comparative randomised study was conducted in a tertiary care centre teaching hospital between September 2012 and 2014. One hundred and fifty consecutive patients, who qualified as per inclusion criteria, were included in the study...
April 2017: Journal of Minimal Access Surgery
https://www.readbyqxmd.com/read/28272475/slc22a3-polymorphisms-do-not-modify-pancreatic-cancer-risk-but-may-influence-overall-patient-survival
#4
Beatrice Mohelnikova-Duchonova, Ondrej Strouhal, David J Hughes, Ivana Holcatova, Martin Oliverius, Zdenek Kala, Daniele Campa, Cosmeri Rizzato, Federico Canzian, Raffaele Pezzilli, Renata Talar-Wojnarowska, Ewa Malecka-Panas, Cosimo Sperti, Carlo Federico Zambon, Sergio Pedrazzoli, Paola Fogar, Anna Caterina Milanetto, Gabriele Capurso, Gianfranco Delle Fave, Roberto Valente, Maria Gazouli, Giuseppe Malleo, Rita Teresa Lawlor, Oliver Strobel, Thilo Hackert, Nathalia Giese, Pavel Vodicka, Ludmila Vodickova, Stefano Landi, Francesca Tavano, Domenica Gioffreda, Ada Piepoli, Valerio Pazienza, Andrea Mambrini, Mariangela Pedata, Maurizio Cantore, Franco Bambi, Stefano Ermini, Niccola Funel, Radmila Lemstrova, Pavel Soucek
Expression of the solute carrier (SLC) transporter SLC22A3 gene is associated with overall survival of pancreatic cancer patients. This study tested whether genetic variability in SLC22A3 associates with pancreatic cancer risk and prognosis. Twenty four single nucleotide polymorphisms (SNPs) tagging the SLC22A3 gene sequence and regulatory elements were selected for analysis. Of these, 22 were successfully evaluated in the discovery phase while six significant or suggestive variants entered the validation phase, comprising a total study number of 1,518 cases and 3,908 controls...
March 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28257821/tight-junction-protein-zo-1-controls-organic-cation-carnitine-transporter-octn2-slc22a5-in-a-protein-kinase-c-dependent-way
#5
Dominika Jurkiewicz, Katarzyna Michalec, Krzysztof Skowronek, Katarzyna A Nałęcz
OCTN2 (SLC22A5) is an organic cation/carnitine transporter belonging to the solute carrier transporters (SLC) family. OCTN2 is ubiquitously expressed and its presence was shown in various brain cells, including the endothelial cells forming blood-brain barrier, where it was mainly detected at abluminal membrane and in proximity of tight junctions (TJ). Since OCTN2 contains a PDZ-binding domain, the present study was focused on a possible role of transporter interaction with a TJ-associated protein ZO-1, containing PDZ domains and detected in rat Octn2 proteome...
May 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28243257/identification-of-stem-leydig-cells-derived-from-pig-testicular-interstitium
#6
Shuai Yu, Pengfei Zhang, Wuzi Dong, Wenxian Zeng, Chuanying Pan
Stem Leydig cells (SLCs), located in the testicular interstitial compartment in the mammalian testes, are capable of differentiating to testosterone-synthesizing Leydig cells (LCs), thus providing a new strategy for treating testosterone deficiency. However, no previous reports have identified and cultured SLCs derived from the pig. The aim of the current study was to isolate, identify, and culture SLCs from pigs. Haematoxylin and eosin staining and immunochemical analysis showed that SLCs were present and that PDGFRα was mainly expressed in the pig testicular interstitium, indicating that PDGFRα was a marker for SLCs in the neonatal pig...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28238630/primate-response-to-angiotensin-infusion-and-high-sodium-intake-differ-by-sodium-lithium-countertransport-phenotype
#7
Kimberly D Spradling-Reeves, Robert E Shade, Joseph R Haywood, Laura A Cox
An increased level of sodium-lithium countertransport (SLC) activity has been associated with salt-sensitive hypertension. Previous findings have suggested that dysregulation of the renin-angiotensin-aldosterone system (RAAS) may be involved in the mechanism linking elevated SLC activity and hypertension. Therefore, baboons with different levels of SLC activity were given two diets differing in sodium content, with and without an angiotensin II (ANG II) infusion, to investigate the relationship between SLC activity, the RAAS, and physiological regulation by sodium...
February 3, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28236503/y-and-w-chromosome-assemblies-approaches-and-discoveries
#8
REVIEW
Marta Tomaszkiewicz, Paul Medvedev, Kateryna D Makova
Hundreds of vertebrate genomes have been sequenced and assembled to date. However, most sequencing projects have ignored the sex chromosomes unique to the heterogametic sex - Y and W - that are known as sex-limited chromosomes (SLCs). Indeed, haploid and repetitive Y chromosomes in species with male heterogamety (XY), and W chromosomes in species with female heterogamety (ZW), are difficult to sequence and assemble. Nevertheless, obtaining their sequences is important for understanding the intricacies of vertebrate genome function and evolution...
February 21, 2017: Trends in Genetics: TIG
https://www.readbyqxmd.com/read/28223391/evaluation-of-para-aminosalicylic-acid-pas-as-a-substrate-of-multiple-solute-carrier-slc-uptake-transporters-and-possible-drug-interactions-with-nsaids-in-vitro
#9
Md Masud Parvez, Ho Jung Shin, Jin Ah Jung, Jae-Gook Shin
para-Aminosalicylic acid (PAS) is a second-line anti-tuberculosis drug used to treat multidrug-resistant and extensively drug-resistant tuberculosis for more than 60 years. Renal secretion and glomerular filtration are the major pathways for elimination of PAS. We comprehensively studied PAS transport by using cell lines that overexpressed various transporters, and found that PAS acts as a novel substrate of organic anionic polypeptide (OATP1B1), organic cationic transporters (OCT1 and OCT2), and organic anion transporters (OAT1 and OAT3) but not a substrate of any ATP-binding cassette (ABC) transporters...
February 21, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28214518/potentiating-slc-transporter-activity-emerging-drug-discovery-opportunities
#10
REVIEW
Marie-Laure Rives, Jonathan A Javitch, Alan D Wickenden
Maintaining the integrity of cellular membranes is critical to protecting metabolic activities and genetic information from the environment. Regulation of transport across membranes of essential chemicals, including water, nutrients, hormones and many drugs, is therefore key to cellular homeostasis and physiological processes. The two main transporter superfamilies are ATP-binding cassette (ABC) transporters that primarily function as efflux transporters, and the solute carrier (SLC) transporters. SLC transporters encompass 52 gene families with almost 400 different human transporter genes...
February 15, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28212401/preload-based-starling-like-control-of-rotary-blood-pumps-an-in-vitro-evaluation
#11
Mahdi Mansouri, Shaun D Gregory, Robert F Salamonsen, Nigel H Lovell, Michael C Stevens, Jo P Pauls, Rini Akmeliawati, Einly Lim
Due to a shortage of donor hearts, rotary left ventricular assist devices (LVADs) are used to provide mechanical circulatory support. To address the preload insensitivity of the constant speed controller (CSC) used in conventional LVADs, we developed a preload-based Starling-like controller (SLC). The SLC emulates the Starling law of the heart to maintain mean pump flow ([Formula: see text]) with respect to mean left ventricular end diastolic pressure (PLVEDm) as the feedback signal. The SLC and CSC were compared using a mock circulation loop to assess their capacity to increase cardiac output during mild exercise while avoiding ventricular suction (marked by a negative PLVEDm) and maintaining circulatory stability during blood loss and severe reductions in left ventricular contractility (LVC)...
2017: PloS One
https://www.readbyqxmd.com/read/28188910/expression-and-splicing-of-abc-and-slc-transporters-in-the-human-blood-brain-barrier-measured-with-rnaseq
#12
Adam M Suhy, Amy Webb, Audrey C Papp, Ethan G Geier, Wolfgang Sadee
The blood-brain barrier (BBB) expresses numerous membrane transporters that supply needed nutrients to the central nervous system (CNS), consisting mostly of solute carriers (SLC transporters), or remove unwanted substrates via extrusion pumps through the action of ATP binding cassette (ABC) transporters. Previous work has identified many BBB transporters using hybridization arrays or qRT-PCR, using targeted probes. Here we have performed next-generation sequencing of the transcriptome (RNAseq) extracted from cerebral cortex tissues and brain microvessel endothelial cells (BMEC) obtained from two donors...
February 7, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28178198/zinc-transporter-3-znt3-in-the-enteric-nervous-system-of-the-porcine-ileum-in-physiological-conditions-and-during-experimental-inflammation
#13
Sławomir Gonkowski, Maciej Rowniak, Joanna Wojtkiewicz
Zinc transporter 3 (ZnT3) is a member of the solute-linked carrier 30 (SLC 30) zinc transporter family. It is closely linked to the nervous system, where it takes part in the transport of zinc ions from the cytoplasm to the synaptic vesicles. ZnT3 has also been observed in the enteric nervous system (ENS), but its reactions in response to pathological factors remain unknown. This study, based on the triple immunofluorescence technique, describes changes in ZnT3-like immunoreactive (ZnT3-LI) enteric neurons in the porcine ileum, caused by chemically-induced inflammation...
February 7, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28176814/eunag-a-new-ligand-inducible-fluorescent-reporter-to-detect-drug-transporter-activity-in-live-cells
#14
Johannes T-H Yeh, Kwangho Nam, Joshua T-H Yeh, Norbert Perrimon
The absorption, distribution, metabolism and excretion (ADME) of metabolites and toxic organic solutes are orchestrated by the ATP-binding cassette (ABC) transporters and the organic solute carrier family (SLC) proteins. A large number of ABC and SLC transpoters exist; however, only a small number have been well characterized. To facilitate the analysis of these transporters, which is important for drug safety and physiological studies, we developed a sensitive genetically encoded bilirubin (BR)-inducible fluorescence sensor (eUnaG) to detect transporter-coupled influx/efflux of organic compounds...
February 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28174690/the-gene-expression-of-numerous-slc-transporters-is-altered-in-the-immortalized-hypothalamic-cell-line-n25-2-following-amino-acid-starvation
#15
Sofie V Hellsten, Emilia Lekholm, Tauseef Ahmad, Robert Fredriksson
Amino acids are known to play a key role in gene expression regulation, and in mammalian cells, amino acid signaling is mainly mediated via two pathways, the mammalian target of rapamycin complex 1 (mTORC1) pathway and the amino acid responsive (AAR) pathway. It is vital for cells to have a system to sense amino acid levels, in order to control protein and amino acid synthesis and catabolism. Amino acid transporters are crucial in these pathways, due to both their sensing and transport functions. In this large-scale study, an immortalized mouse hypothalamic cell line (N25/2) was used to study the gene expression changes following 1, 2, 3, 5 or 16 h of amino acid starvation...
February 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28153036/biomechanical-comparison-of-multilevel-lateral-interbody-fusion-with-and-without-supplementary-instrumentation-a-three-dimensional-finite-element-study
#16
Xilin Liu, Jun Ma, Paul Park, Xiaodong Huang, Ning Xie, Xiaojian Ye
BACKGROUND: Lateral lumbar interbody fusion (LLIF) is a popular, minimally invasive technique that is used to address challenging multilevel degenerative spinal diseases. It remains controversial whether supplemental instrumentation should be added for multilevel LLIF. In this study, we compared the kinematic stability afforded by stand-alone lateral cages with those supplemented by bilateral pedicle screws and rods (PSR), unilateral PSR, or lateral plate (LP) fixation using a finite-element (FE) model of a multi-level LLIF construct with simulated osteoporosis...
February 2, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28113872/quantum-ensemble-classification-a-sampling-based-learning-control-approach
#17
Chunlin Chen, Daoyi Dong, Bo Qi, Ian R Petersen, Herschel Rabitz
Quantum ensemble classification (QEC) has significant applications in discrimination of atoms (or molecules), separation of isotopes, and quantum information extraction. However, quantum mechanics forbids deterministic discrimination among nonorthogonal states. The classification of inhomogeneous quantum ensembles is very challenging, since there exist variations in the parameters characterizing the members within different classes. In this paper, we recast QEC as a supervised quantum learning problem. A systematic classification methodology is presented by using a sampling-based learning control (SLC) approach for quantum discrimination...
March 23, 2016: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28112518/lc-ms-ms-based-quantitation-of-abc-and-slc-transporter-proteins-in-plasma-membranes-of-cultured-primary-human-retinal-pigment-epithelium-cells-and-immortalized-arpe19-cell-line
#18
Laura Pelkonen, Kazuki Sato, Mika Reinisalo, Heidi Kidron, Masanori Tachikawa, Michitoshi Watanabe, Yasuo Uchida, Arto Urtti, Tetsuya Terasaki
The retinal pigment epithelium (RPE) forms the outer blood-retinal barrier between neural retina and choroid. The RPE has several important vision supporting functions, such as transport mechanisms that may also modify pharmacokinetics in the posterior eye segment. Expression of plasma membrane transporters in the RPE cells has not been quantitated. The aim of this study was to characterize and compare transporter protein expression in the ARPE19 cell line and hfRPE (human fetal RPE) cells by using quantitative targeted absolute proteomics (QTAP)...
February 14, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28112423/comparison-of-salivary-cortisol-and-%C3%AE-amylase-levels-and-psychological-profiles-in-patients-with-burning-mouth-syndrome
#19
Tahereh Nosratzehi, Saeedeh Salimi, Azadeh Parvaee
PURPOSE: The aim of the study was to compare salivary cortisol and α-amylase levels and psychological profiles in patients with burning mouth syndrome (BMS) and healthy subjects. METHODS AND MATERIALS: Spitting method was used to collect unstimulated salivary. Salivary cortisol and α-amylase levels were determined using ELISA and the Caraway starch-iodine technique. SLC-90 questionnaire was used to determine the psychological profiles. RESULTS: The difference between mean of salivary cortisol levels in patients with BMS and in healthy subjects was not significant (4...
January 23, 2017: Special Care in Dentistry
https://www.readbyqxmd.com/read/28099443/inhibition-of-human-drug-transporter-activities-by-the-pyrethroid-pesticides-allethrin-and-tetramethrin
#20
Lisa Chedik, Arnaud Bruyere, Marc Le Vee, Bruno Stieger, Claire Denizot, Yannick Parmentier, Sophie Potin, Olivier Fardel
Pyrethroids are widely-used chemical insecticides, to which humans are commonly exposed, and known to alter functional expression of drug metabolizing enzymes. Limited data have additionally suggested that drug transporters, that constitute key-actors of the drug detoxification system, may also be targeted by pyrethroids. The present study was therefore designed to analyze the potential regulatory effects of these pesticides towards activities of main ATP-binding cassette (ABC) and solute carrier (SLC) drug transporters, using transporter-overexpressing cells...
2017: PloS One
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