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https://www.readbyqxmd.com/read/28637871/phosphorylation-at-serine-31-targets-tyrosine-hydroxylase-to-vesicles-for-transport-along-microtubules
#1
Ana Jorge-Finnigan, Rune Kleppe, Kunwar Jung-Kc, Ming Ying, Michael Marie, Ivan Rios-Mondragon, Michael F Salvatore, Jaakko Saraste, Aurora Martinez
Tyrosine hydroxylase (TH) catalyzes the conversion of L-tyrosine into L-Dopa, which is the rate-limiting step in the synthesis of catecholamines, particularly dopamine in dopaminergergic neurons. Low dopamine levels and death of the dopaminergic neurons are hallmarks of Parkinson's disease (PD), where α-synuclein is also a key player. TH is highly regulated, notably by phosphorylation of several Ser/Thr residues in the N-terminal tail. However, the functional role of TH phosphorylation at the Ser31 site (THpSer31) remains unclear...
June 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28636748/e-cadherin-mediates-uvr-and-calcium-induced-melanin-transfer-in-human-skin-cells
#2
Suman K Singh, Richard Baker, Stephen K Sikkink, Carine Nizard, Sylvianne Schnebert, Robin Kurfurst, Desmond J Tobin
Skin pigmentation is directed by epidermal-melanin units, characterized by long-lived and dendritic epidermal melanocytes (MC) that interact with viable keratinocytes (KC) to contribute melanin to the epidermis. Previously we reported that MC:KC contact is required for melanosome transfer, that this can be enhanced by filopodial and by UVR/UVA irradiation, which can up-regulate melanosome transfer via Myosin X-mediated control of MC filopodia. Both MC and KC express Ca(2+) -dependent E-cadherins. These homophilic adhesion contacts induce transient increases in intra-KC Ca(2+) , while ultraviolet radiation (UVR) raises intra-MC Ca(2+) via calcium selective ORAI1 ion channels; both are associated with regulating melanogenesis...
June 21, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28633280/motifhyades-expectation-maximization-for-de-novo-dna-motif-pair-discovery-on-paired-sequences
#3
Ka-Chun Wong
Motivation: In higher eukaryotes, protein-DNA binding interactions are the central activities in gene regulation. In particular, DNA motifs such as transcription factor binding sites are the key components in gene transcription. Harnessing the recently available chromatin interaction data, computational methods are desired for identifying the coupling DNA motif pairs enriched on long-range chromatin-interacting sequence pairs (e.g. promoter-enhancer pairs) systematically. Results: To fill the void, a novel probabilistic model (namely, MotifHyades) is proposed and developed for de novo DNA motif pair discovery on paired sequences...
June 13, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28627972/immunomodulatory-effects-of-cigarette-smoke-condensate-in-mouse-macrophage-cell-line
#4
Junwei Zhao, Xiang Li, Fuwei Xie, Zhihua Yang, Xiujie Pan, Maoxiang Zhu, Pingping Shang, Cong Nie, Huimin Liu, Jianping Xie
Increasing evidence has demonstrated that the secretion of cytokines may be associated with cigarette smoke-induced immunomodulatory effects, but a comprehensive analysis of the cytokine profile for cigarette smoke condensate (CSC) exposure is lacking. The aims of this study were to (1) examine the release of 20 cytokines induced by CSC from 12 brands of cigarettes in macrophages cells (Ana-1) and (2) to investigate the general characteristics of the immunomodulatory effects of CSC. Luminex technology was used to simultaneously determine the levels of 20 cytokines (interleukin (IL)-1α, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-10, IL-12, IL-13, IL-17, granulocyte-macrophage colony-stimulating factor (GM-CSF), interferon-γ (IFN-γ), keratinocyte-derived Chemokine (KC), monocyte chemoattractant protein 1 (MCP-1), macrophage inflammatory protein 1α (MIP-1α), induced protein 10 (IP-10), tumor necrosis factor α (TNF-α), vascular endothelial growth factor (VEGF), monkine inducible by γ interferon (MIG), and fibroblast growth factor (FGF)-basic) in the supernatants from Ana-1 cells treated with the CSC...
June 1, 2017: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/28622707/coordination-between-leaf-co2-diffusion-and-rubisco-properties-allows-maximizing-photosynthetic-efficiency-in-limonium-species
#5
Jeroni Galmés, Arántzazu Molins, Jaume Flexas, Miquel À Conesa
High photosynthetic efficiency intrinsically demands tight coordination between traits related to CO2 diffusion capacity and leaf biochemistry. Although this coordination constitutes the basis of existing mathematical models of leaf photosynthesis, it has been barely explored among closely related species, which could reveal rapid adaptation clues in the recent past. With this aim, we characterized the photosynthetic capacity of twelve species of Limonium, possessing contrasting Rubisco catalytic properties, grown under optimal (WW) and extreme drought conditions (WD)...
June 16, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28621489/validation-and-comparison-of-quality-of-life-measures-for-topical-5-fluorouracil-treatment-results-from-a-randomized-controlled-trial
#6
H Pomerantz, M-M Chren, R Lew, M A Weinstock
BACKGROUND: Topical 5-fluorouracil (5-FU) is commonly used for high-risk patients with keratinocyte carcinoma (KC). Skindex and Skin Cancer Index (SCI) are validated instruments to measure quality of life (QoL) of patients with KC and those who have had surgical treatment of KCs. AIM: To validate Skindex and SCI for topical 5-fluorouracil (5-FU) application and to compare the two QoL instruments. METHODS: We randomized 932 veterans at high risk for developing a KC to either topical 5-FU or vehicle control cream applied to the face and ears for up to 1 month...
July 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/28620708/validation-of-fourier-analysis-of-videokeratographic-data
#7
Haris Sideroudi, Georgios Labiris, Fienke Ditzel, Efi Tsaragli, Kimonas Georgatzoglou, Haralampos Siganos, Vassilios Kozobolis
PURPOSE: The aim was to assess the repeatability of Fourier transfom analysis of videokeratographic data using Pentacam in normal (CG), keratoconic (KC) and post-CXL (CXL) corneas. METHODS: This was a prospective, clinic-based, observational study. One randomly selected eye from all study participants was included in the analysis: 62 normal eyes (CG group), 33 keratoconus eyes (KC group), while 34 eyes, which had already received CXL treatment, formed the CXL group...
June 15, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28618357/visualisation-study-on-pseudomonas-migulae-an-1-transport-in-saturated-porous-media
#8
Dan Qu, Hejun Ren, Rui Zhou, Yongsheng Zhao
Influence of granular size and groundwater flow rate on transport of Pseudomonas migulae AN-1 in saturated porous media was non-invasively and visually investigated with a novel imaging technique based on our previously established green fluorescent protein-tagging approach. AN-1 was transported faster than water was. The finer the media were, the greater the enhancement of bacterial velocity was. Mass recovery (MR) increased, while deposition rate coefficient (Kc) decreased, with increasing granular size. Similar and linear trends of MR and Kc, respectively, were quantitatively observed with increasing water flow rate...
June 7, 2017: Water Research
https://www.readbyqxmd.com/read/28617352/equivalent-circuit-model-of-low-frequency-magnetoelectric-effect-in-disk-type-terfenol-d-pzt-laminate-composites-considering-a-new-interface-coupling-factor
#9
Guofeng Lou, Xinjie Yu, Shihua Lu
This paper describes the modeling of magnetoelectric (ME) effects for disk-type Terfenol-D (Tb0.3Dy0.7Fe1.92)/PZT (Pb(Zr,Ti)O₃) laminate composite at low frequency by combining the advantages of the static elastic model and the equivalent circuit model, aiming at providing a guidance for the design and fabrication of the sensors based on magnetoelectric laminate composite. Considering that the strains of the magnetostrictive and piezoelectric layers are not equal in actual operating due to the epoxy resin adhesive bonding condition, the magnetostrictive and piezoelectric layers were first modeled through the equation of motion separately, and then coupled together with a new interface coupling factor kc, which physically reflects the strain transfer between the phases...
June 15, 2017: Sensors
https://www.readbyqxmd.com/read/28615224/risk-of-second-malignancies-in-solid-organ-transplant-recipients-who-develop-keratinocyte%C3%A2-cancers
#10
Rachel Zamoiski, Elizabeth L Yanik, Todd M Gibson, Elizabeth K Cahoon, Margaret M Madeleine, Charles F Lynch, Sally Gustafson, Marc T Goodman, Melissa Skeans, Ajay Israni, Eric A Engels, Lindsay M Morton
Solid organ transplant recipients have increased risk for developing keratinocyte cancers (KC), including cutaneous squamous cell carcinoma (SCC) and basal cell carcinoma (BCC), in part as a result of immunosuppressive medications administered to prevent graft rejection. In the general population, KC are associated with increased risks of subsequent malignancy, however, the risk in organ transplant populations has not been evaluated. We addressed this question by linking the U.S. Scientific Registry of Transplant Recipients, which includes data on KC occurrence, with 15 state cancer registries...
June 14, 2017: Cancer Research
https://www.readbyqxmd.com/read/28600126/chemokine-cc-motif-receptor-like-2-mrna-is-expressed-in-hepatic-stellate-cells-and-is-positively-associated-with-characteristics-of-non-alcoholic-steatohepatitis-in-mice-and-men
#11
Sebastian Zimny, Rebekka Pohl, Lisa Rein-Fischboeck, Elisabeth M Haberl, Sabrina Krautbauer, Thomas S Weiss, Christa Buechler
Chemokine (CC-motif) receptor-like 2 (CCRL2) is a decoy receptor and regulates the local responses of the chemokine chemerin. Recently our group has shown that the functional chemerin receptor, chemokine-like receptor 1 (CMKLR1), correlates with fibrosis and non-alcoholic steatohepatitis (NASH) score in males only. In our current study, we wanted to know whether CCRL2 shows similar correlations as CMKLR1. Therefore, we analyzed the hepatic expression of CCRL2 in murine NASH and in liver tissues obtained from 85 patients with non-alcoholic fatty liver disease (NAFLD) and 33 controls...
June 15, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28599297/long-term-cigarette-smoke-exposure-inhibits-histone-deacetylase-2-expression-and-enhances-the-nuclear-factor-%C3%AE%C2%BAb-activation-in-skeletal-muscle-of-mice
#12
Dongmei Huang, Zhiying Ma, Yili He, Ying Xiao, Honglin Luo, Qiuli Liang, Xiaoning Zhong, Jing Bai, Zhiyi He
Long-term cigarette smoke induces lung inflammatory injury and chronic obstructive pulmonary disease (COPD), associated with skeletal muscle inflammation. This study aimed at investigating how cigarette smoke promotes skeletal muscle inflammation and its molecular pathogenesis. Mice were exposed to air or cigarette smoke for 12 or 24 weeks, and C2C12 cells were stimulated with cigarette smoke extract (CSE). The mass and function, myotube formation, inflammatory cytokine production, histone deacetylase 2 (HDAC2) and nuclear factor-κB (NF-κB) p65 expression were detected in the gastrocnemius muscles of mice and C2C12 cells...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28591281/topographic-outcomes-after-corneal-collagen-crosslinking-in-progressive-keratoconus-1-year-follow-up
#13
Mauro C Tiveron, Camila Ribeiro Koch Pena, Richard Yudi Hida, Luciane Bugmann Moreira, Felipe Roberto Exterhotter Branco, Newton Kara-Junior
Purpose: We aimed to report and analyze topographic and refractive outcomes following corneal collagen crosslinking (CXL) in patients with progressive keratoconus (KC). Methods: We performed a retrospective, analytical, and observational study of 100 eyes from 74 progressive KC patients who underwent CXL at the Eye Hospital of Paraná. Keratometric values were analyzed preoperatively as well as 3 and 12 months postoperatively. Results: For a total of 100 eyes, 68 belonged to male patients...
March 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/28591145/successful-implementation-of-helping-babies-survive-and-helping-mothers-survive-programs-an-utstein-formula-for-newborn-and-maternal-survival
#14
Hege L Ersdal, Nalini Singhal, Georgina Msemo, Ashish Kc, Santorino Data, Nester T Moyo, Cherrie L Evans, Jeffrey Smith, Jeffrey M Perlman, Susan Niermeyer
Globally, the burden of deaths and illness is still unacceptably high at the day of birth. Annually, approximately 300.000 women die related to childbirth, 2.7 million babies die within their first month of life, and 2.6 million babies are stillborn. Many of these fatalities could be avoided by basic, but prompt care, if birth attendants around the world had the necessary skills and competencies to manage life-threatening complications around the time of birth. Thus, the innovative Helping Babies Survive (HBS) and Helping Mothers Survive (HMS) programs emerged to meet the need for more practical, low-cost, and low-tech simulation-based training...
2017: PloS One
https://www.readbyqxmd.com/read/28589636/25-hydroxyvitamin-d3-and-its-c-3-epimer-are-elevated-in-the-skin-and-serum-of-skh-1-mice-supplemented-with-dietary-vitamin-d3
#15
Matthew D Teegarden, Amanda R Campbell, Jessica L Cooperstone, Kathleen L Tober, Steven J Schwartz, Tatiana M Oberyszyn
SCOPE: UV exposure is a risk factor for keratinocyte carcinoma (KC) while critical for endogenous vitamin D production. We investigated dietary modulation of skin and serum 25-hydroxyvitamin D3 (25OHD3 ) and its C-3 epimer (C3epi) in a mouse model of KC. C3epi is an under-investigated metabolite of vitamin D with respect to its biological implications. METHODS AND RESULTS: Male and female Skh-1 mice were supplemented with 25, 150 or 1000 IU/kg diet vitamin D3 for 25 weeks, with some exposed to UV light...
June 7, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28587618/effect-of-tryptase-inhibition-on-joint-inflammation-a-pharmacological-and-lentivirus-mediated-gene-transfer-study
#16
Alexandre Denadai-Souza, Camilla Moreira Ribeiro, Corinne Rolland, Anne Thouard, Céline Deraison, Cristoforo Scavone, Daniel Gonzalez-Dunia, Nathalie Vergnolle, Maria Christina Werneck Avellar
BACKGROUND: Increasing evidences indicate that an unbalance between tryptases and their endogenous inhibitors, leading to an increased proteolytic activity, is implicated in the pathophysiology of rheumatoid arthritis. The aim of the present study was to evaluate the impact of tryptase inhibition on experimental arthritis. METHODS: Analysis of gene expression and regulation in the mouse knee joint was performed by RT-qPCR and in situ hybridization. Arthritis was induced in male C57BL/6 mice with mBSA/IL-1β...
June 6, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28587132/anti-inflammatory-activity-of-a-polymeric-proanthocyanidin-from-serjania-schiedeana
#17
David Osvaldo Salinas-Sánchez, Enrique Jiménez-Ferrer, Veronica Sánchez-Sánchez, Alejandro Zamilpa, Manasés González-Cortazar, Jaime Tortoriello, Maribel Herrera-Ruiz
The ethyl acetate extract (SsAcOEt) from Serjania schiedeana, select fractions (F-6, F-12, F-13, F-14), and one isolated compound, were evaluated in 12-O-tetradecanoylphorbol 13-acetate (TPA) ear edema and kaolin/carrageenan (KC)-induced monoarthritis assays. SsEtOAc induced edema inhibition of 90% (2.0 mg/ear), fractions showed activity within a range of 67-89%. Due to the fact F-14 showed the highest effect, it was separated, yielding a proanthocyanidin-type called epicatechin-(4β → 8)-epicatechin-(4β → 8, 2β → O → 7) epicatechin (ETP)...
May 26, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28585726/later-life-swimming-performance-and-persistent-heart-damage-following-subteratogenic-pah-mixture-exposure-in-the-atlantic-killifish-fundulus-heteroclitus
#18
Daniel R Brown, Jasmine Thompson, Melissa Chernick, David E Hinton, Richard T Di Giulio
High level, acute exposures to individual polycyclic aromatic hydrocarbons (PAHs) and complex PAH mixtures result in cardiac abnormalities in developing fish embryos. While acute PAH exposures can be developmentally lethal, little is known about the later life consequences of early life, lower level PAH exposures in survivors. A population of PAH-adapted Fundulus heteroclitus from the PAH-contaminated Superfund site, Atlantic Wood Industries (AW), Elizabeth River, Portsmouth, VA, USA is highly resistant to acute PAH cardiac teratogenicity...
June 6, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28585438/pulmonary-immune-cells-and-inflammatory-cytokine-dysregulation-are-associated-with-mortality-of-il-1r1-mice-infected-with-influenza-virus-h1n1
#19
Lei Guo, Yan-Cui Wang, Jun-Jie Mei, Ruo-Tong Ning, Jing-Jing Wang, Jia-Qi Li, Xi Wang, Hui-Wen Zheng, Hai-Tao Fan, Long-Ding Liu
Respirovirus infection can cause viral pneumonia and acute lung injury (ALI). The interleukin-1 (IL-1) family consists of proinflammatory cytokines that play essential roles in regulating immune and inflammatory responses in vivo. IL-1 signaling is associated with protection against respiratory influenza virus infection by mediation of the pulmonary anti-viral immune response and inflammation. We analyzed the infiltration lung immune leukocytes and cytokines that contribute to inflammatory lung pathology and mortality of fatal H1N1 virus-infected IL-1 receptor 1 (IL-1R1) deficient mice...
May 18, 2017: Zoological Research
https://www.readbyqxmd.com/read/28582571/the-role-of-rubisco-kinetics-and-pyrenoid-morphology-in-shaping-the-ccm-of-haptophyte-microalgae
#20
Ana M C Heureux, Jodi N Young, Spencer M Whitney, Maeve R Eason-Hubbard, Renee B Y Lee, Robert E Sharwood, Rosalind E M Rickaby
The haptophyte algae are a cosmopolitan group of primary producers that contribute significantly to the marine carbon cycle and play a major role in paleo-climate studies. Despite their global importance, little is known about carbon assimilation in haptophytes, in particular the kinetics of their Form 1D CO2-fixing enzyme, Rubisco. Here we examine Rubisco properties of three haptophytes with a range of pyrenoid morphologies (Pleurochrysis carterae, Tisochrysis lutea, and Pavlova lutheri) and the diatom Phaeodactylum tricornutum that exhibit contrasting sensitivities to the trade-offs between substrate affinity (Km) and turnover rate (kcat) for both CO2 and O2...
June 3, 2017: Journal of Experimental Botany
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