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https://www.readbyqxmd.com/read/28528957/proteasomes-in-corneal-epithelial-cells-and-cultured-autologous-oral-mucosal-epithelial-cell-sheet-caomecs-graft-used-for-the-ocular-surface-regeneration
#1
Fawzia Bardag-Gorce, Richard Hoft, Imara Meepe, Julio Garcia, Kumar Tiger, Andrew Wood, Amanda Laporte, Derek Pan, Andrew Makalinao, Robert Niihara, Joan Oliva, Arjie Florentino, Amber M Gorce, Jeremy Stark, Daileen Cortez, Samuel W French, Yutaka Niihara
PURPOSE: This study focuses on characterizing proteasomes in corneal epithelial cells (CEC) and in cultured autologous oral mucosal epithelial cell sheets (CAOMECS) used to regenerate the ocular surface. METHODS: Limbal stem cell deficiency (LSCD) was surgically induced in rabbit corneas. CAOMECS was engineered and grafted onto corneas with LSCD to regenerate the ocular surface. RESULTS: LSCD caused an increase in inflammatory cells in the ocular surface, an increase in the formation of immunoproteasomes (IPR), and a decrease in the formation of constitutive proteasome (CPR)...
May 18, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28499168/novel-imidazo-4-5-c-1-2-6-thiadiazine-2-2-dioxides-as-antiproliferative-trypanosoma-cruzi-drugs-computational-screening-from-neural-network-synthesis-and-in%C3%A2-vivo-biological-properties
#2
Angela Guerra, Pedro Gonzalez-Naranjo, Nuria E Campillo, Javier Varela, María L Lavaggi, Alicia Merlino, Hugo Cerecetto, Mercedes González, Alicia Gomez-Barrio, José A Escario, Cristina Fonseca-Berzal, Gloria Yaluf, Jorge Paniagua-Solis, Juan A Páez
A new family of imidazo[4,5-c][1,2,6]thiadiazine 2,2-dioxide with antiproliferative Trypanosoma cruzi properties was identified from a neural network model published by our group. The synthesis and evaluation of this new class of trypanocidal agents are described. These compounds inhibit the growth of Trypanosoma cruzi, comparable with benznidazole or nifurtimox. In vitro assays were performed to study their effects on the growth of the epimastigote form of the Tulahuen 2 strain, as well as the epimastigote and amastigote forms of CL clone B5 of Trypanosoma cruzi...
May 1, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28497908/the-molybdenum-cofactor-enzyme-marc-moonlighting-or-promiscuous-enzyme
#3
REVIEW
Angel Llamas, Alejandro Chamizo-Ampudia, Manuel Tejada-Jimenez, Aurora Galvan, Emilio Fernandez
Molybdenum (Mo) is present in the active center of eukaryotic enzymes as a tricyclic pyranopterin chelate compound forming the Mo Cofactor (Moco). Four Moco containing enzymes are known in eukaryotes, nitrate reductase (NR), sulfite oxidase (SO), xanthine oxidoreductase (XOR), and aldehyde oxidase (AO). A fifth Moco enzyme has been recently identified. Because of the ability of this enzyme to convert by reduction several amidoximes prodrugs into their active amino forms, it was named mARC (mitochondrial Amidoxime Reducing Component)...
May 12, 2017: BioFactors
https://www.readbyqxmd.com/read/28495463/development-of-an-animal-model-of-progressive-vaccinia-in-nu-nu-mice-and-the-use-of-bioluminescence-imaging-for-assessment-of-the-efficacy-of-monoclonal-antibodies-against-vaccinial-b5-and-l1-proteins
#4
Marina Zaitseva, Antonia Thomas, Clement A Meseda, Charles Y K Cheung, Claudia G Diaz, Yan Xiang, Shane Crotty, Hana Golding
Bioluminescence imaging (BLI) was used to follow dissemination of recombinant vaccinia virus (VACV) expressing luciferase (IHD-J-Luc) in BALB/c nu/nu mice treated post-challenge with monoclonal antibodies (MAbs) against L1 and B5 VACV proteins in a model of Progressive Vaccinia (PV). Areas Under the flux Curve (AUC) were calculated for viral loads in multiple organs in individual mice. Following scarification with 10(5) pfu, IHD-J-Luc VACV undergoes fast replication at the injection site and disseminates rapidly to the inguinal lymph nodes followed by spleen, liver, and axillary lymph nodes within 2-3 days and before primary lesions are visible at the site of scarification...
May 8, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28480969/epidemiological-and-genetic-analysis-concerning-the-non-enterovirus-71-and-non-coxsackievirus-a16-causative-agents-related-to-hand-foot-and-mouth-disease-in-anyang-city-henan-province-china-from-2011-to-2015
#5
Yang Li, Honghong Bao, Xiangping Zhang, Mingqiang Zhai, Xiaobing Bao, Demin Wang, Shuanhu Zhang
Enterovirus 71 (EV-A71) and coxsackievirus A16 (CV-A16) are major pathogens of hand, foot and mouth disease (HFMD) and have been associated with consecutive outbreaks of HFMD in China over the past years. Although several other human enteroviruses (HEVs) have also acted as causative agents of HFMD, published information on their roles in the prevalence of HFMD is limited. This study was conducted to reveal the characteristics of the pathogenic spectrum and molecular epidemiology of the non-EV-71 and non-CV-A16 HEVs in Anyang City, which is located in north-central China and has a population of 5 million...
May 8, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28472682/insulin-enhances-the-peroxidase-activity-of-heme-by-forming-heme-insulin-complex-relevance-to-type-2-diabetes-mellitus
#6
Yi Huang, Zhen Yang, Huan Xu, Pengfei Zhang, Zhonghong Gao, Hailing Li
Evidences have implicated the involvement of heme in the type 2 diabetes mellitus (T2Dm) pathogenesis, but possible mediators linking between heme and diabetes are still poorly understood. Here, we explored a potential mechanism that linked heme, insulin and diabetes. Our results demonstrated the formation of heme-insulin complex by two classical methods, i.e. UV-vis and capillary electrophoresis-frontal analysis (CE-FA). UV-vis results implied heme binding insulin via bis-histidine sites, and CE-FA further revealed that, when insulin uses two sites binding with heme, this interaction occurs at high affinity (Kd=3...
May 1, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28448444/role-of-the-vanins-myeloperoxidase-axis-in-colorectal-carcinogenesis
#7
REVIEW
Francesco Mariani, Luca Roncucci
The presence of chronic inflammation in the colonic mucosa leads to an increased risk of cancer. Among proteins involved in the regulation of mucosal inflammation and that may contribute both to structural damage of the intestinal mucosa and to intestinal carcinogenesis, there are myeloperoxidase (MPO) and vanins. The infiltration of colonic mucosa by neutrophils may promote carcinogenesis through MPO, a key enzyme contained in the lysosomes of neutrophils that regulates local inflammation and the generation of reactive oxygen species (ROS) and mutagenic species...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28441885/lactobacillus-plantarum-l9-but-not-lactobacillus-acidophilus-la-reduces-tumour-necrosis-factor-induced-bacterial-translocation-in-caco-2-cells
#8
B Wang, J Chen, S Wang, X Zhao, G Lu, X Tang
Translocation of bacteria across the intestinal barrier is important in the pathogenesis of systemic sepsis and multiple organ dysfunction syndromes. Inflammatory cytokines increase paracellular permeability that allows increased luminal bacteria to translocate across mucosal epithelium and further deteriorate the gut barrier. In order to reduce this risk, the prophylactic use of probiotics has been recently addressed. In this paper, we investigate the protective role toward tumour necrosis factor (TNF)-α induced non-pathogenic Escherichia coli translocation across Caco-2 monolayers of Lactobacillus strains...
April 26, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28435072/development-of-a-pseudovirus-based-assay-for-measuring-neutralizing-antibodies-against-coxsackievirus-b5
#9
Pan Chen, Xing Wu, Yao Su, Xiaotian Hao, Qunying Mao, Zhenglun Liang
Coxsackievirus B5 (CV-B5), an important Coxsackie B virus from genus Enteroviruse within the family Picornaviridae, has also been isolated from Hand, Foot, and Mouth Disease (HFMD) patients, and often associated with neurological manifestations. In this study, we found out that Coxsackievirus B3 (CV-B3) replicon RNA could be encapsidated with CV-B5 capsid to assemble infectious CV-B5 pseudovirus. We then utilized this single round infection system of CV-B5 to develop a neutralizing antibody quantification assay...
April 20, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28424769/folates-in-plants-research-advances-and-progress-in-crop-biofortification
#10
REVIEW
Vera Gorelova, Lars Ambach, Fabrice Rébeillé, Christophe Stove, Dominique Van Der Straeten
Folates, also known as B9 vitamins, serve as donors and acceptors in one-carbon (C1) transfer reactions. The latter are involved in synthesis of many important biomolecules, such as amino acids, nucleic acids and vitamin B5. Folates also play a central role in the methyl cycle that provides one-carbon groups for methylation reactions. The important functions fulfilled by folates make them essential in all living organisms. Plants, being able to synthesize folates de novo, serve as an excellent dietary source of folates for animals that lack the respective biosynthetic pathway...
2017: Frontiers in Chemistry
https://www.readbyqxmd.com/read/28423701/identification-of-protein-clusters-predictive-of-tumor-response-in-rectal-cancer-patients-receiving-neoadjuvant-chemo-radiotherapy
#11
Ombretta Repetto, Valli De Re, Antonino De Paoli, Claudio Belluco, Lara Alessandrini, Vincenzo Canzonieri, Renato Cannizzaro
Preoperative neoadjuvant chemoradiotherapy (nCRT) is the gold standard in locally advanced rectal cancer, only 10-30% of patients achieving benefits. Currently, there is a need of a reliable selection of markers for the identification of poor or non-responders prior to therapy. In this work, we compared protein profiles before therapy of patients differing in their responses to nCRT to find novel predictive markers of response to therapy. Patients were grouped into 3 groups according to their tumor regression grading (TRG) after surgery: 'TRG 1-2', good responders, 'TRG 3' and 'TRG 4', poor responders...
April 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28421098/fine-mapping-the-branching-habit-trait-in-cultivated-peanut-by-combining-bulked-segregant-analysis-and-high-throughput-sequencing
#12
Galya Kayam, Yael Brand, Adi Faigenboim-Doron, Abhinandan Patil, Ilan Hedvat, Ran Hovav
The growth habit of lateral shoots (also termed "branching habit") is an important descriptive and agronomic character of peanut. Yet, both the inheritance of branching habit and the genetic mechanism that controls it in this crop remain unclear. In addition, the low degree of polymorphism among cultivated peanut varieties hinders fine-mapping of this and other traits in non-homozygous genetic structures. Here, we combined high-throughput sequencing with a well-defined genetic system to study these issues in peanut...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28419279/primates-lice-and-bacteria-speciation-and-genome-evolution-in-the-symbionts-of-hominid-lice
#13
Bret M Boyd, Julie M Allen, Nam-Phuong Nguyen, Pranjal Vachaspati, Zach Quicksall, Tandy Warnow, Lawrence Mugisha, Kevin P Johnson, David L Reed
Insects with restricted diets rely on symbiotic bacteria to provide essential metabolites missing in their diet. The blood-sucking lice are obligate, host-specific parasites of mammals and are themselves host to symbiotic bacteria. In human lice, these bacterial symbionts supply the lice with B-vitamins. Here we sequenced the genomes of symbiotic and heritable bacterial of human, chimpanzee, gorilla, and monkey lice and used phylogenomics to investigate their evolutionary relationships. We find that these symbionts have a phylogenetic history reflecting the louse phylogeny, a finding contrary to previous reports of symbiont replacement...
April 14, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28414290/-the-effect-of-isatin-on-protein-protein-interactions-between-cytochrome-b5-and-cytochromes-p450
#14
P V Ershov, E O Yablokov, Yu V Mezentsev, L A Kalushskiy, A V Florinskaya, A V Veselovsky, O V Gnedenko, A A Gilep, S A Usanov, A E Medvedev, A S Ivanov
Cytochromes P450 (CYP) are involved in numerous biochemical processes including metabolism of xenobiotics, biosynthesis of cholesterol, steroid hormones etc. Since some CYP catalyze indol oxidation to isatin, we have hypothesized that isatin can regulate protein-protein interactions (PPI) between components of the CYP system thus representing a (negative?) feedback mechanism. The aim of this study was to investigate a possible effect of isatin on interaction of human CYP with cytochrome b5 (CYB5A). Using the optical biosensor test system employing surface plasmon resonance (SPR) we have investigated interaction of immobilized CYB5A with various CYP in the absence and in the presence of isatin...
March 2017: Biomedit︠s︡inskai︠a︡ Khimii︠a︡
https://www.readbyqxmd.com/read/28413820/coxsackievirus-b5-associated-with-hand-foot-mouth-disease-in-a-healthy-adult
#15
Anthony R Andreoni, Andrea S Colton
No abstract text is available yet for this article.
March 2017: JAAD Case Reports
https://www.readbyqxmd.com/read/28413083/a-novel-nuclear-xenobiotic-receptors-ahr-pxr-car-mediated-mechanism-of-dehp-induced-cerebellar-toxicity-in-quails-coturnix-japonica-via-disrupting-cyp-enzyme-system-homeostasis
#16
Zheng-Hai Du, Jun Xia, Xiao-Chen Sun, Xue-Nan Li, Cong Zhang, Hua-Shan Zhao, Shi-Yong Zhu, Jin-Long Li
Di-(2-ethylhexyl)-phthalate (DEHP) is causing serious health hazard in wildlife animal and human through environment and food chain, including the effect of brain development and impacted neurobehavioral outcomes. However, DEHP exposure caused cerebellar toxicity in bird remains unclear. To evaluate DEHP-exerted potential neurotoxicity in cerebellum, male quails were exposed with 0, 250, 500 and 750 mg/kg BW/day DEHP by gavage treatment for 45 days. Neurobehavioral abnormality and cerebellar histopathological alternation were observed in DEHP-induced quails...
April 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28410378/metabolic-changes-and-inflammation-in-cultured-astrocytes-from-the-5xfad-mouse-model-of-alzheimer-s-disease-alleviation-by-pantethine
#17
Manuel van Gijsel-Bonnello, Kévin Baranger, Philippe Benech, Santiago Rivera, Michel Khrestchatisky, Max de Reggi, Bouchra Gharib
Astrocytes play critical roles in central nervous system homeostasis and support of neuronal function. A better knowledge of their response may both help understand the pathophysiology of Alzheimer's disease (AD) and implement new therapeutic strategies. We used the 5xFAD transgenic mouse model of AD (Tg thereafter) to generate astrocyte cultures and investigate the impact of the genotype on metabolic changes and astrocytes activation. Metabolomic analysis showed that Tg astrocytes exhibited changes in the glycolytic pathway and tricarboxylic acid (TCA) cycle, compared to wild type (WT) cells...
2017: PloS One
https://www.readbyqxmd.com/read/28396637/membrane-associated-progesterone-receptors-promiscuous-proteins-with-pleiotropic-functions-focus-on-interactions-with-cytochromes-p450
#18
REVIEW
Chang S Ryu, Kathrin Klein, Ulrich M Zanger
Membrane-associated progesterone receptors (MAPR) are a group of four rather small, partially homologous proteins, which share a similar non-covalent heme-binding domain that is related to cytochrome b5, a well-known functional interaction partner of microsomal cytochrome P450 (CYP) monooxygenase systems. Apart from their structural similarities the four proteins progesterone membrane component 1 (PGRMC1, also referred to as IZA, sigma-2 receptor, Dap1), PGRMC2, neudesin (NENF) and neuferricin (CYB5D2) display surprisingly divergent and multifunctional physiological properties related to cholesterol/steroid biosynthesis, drug metabolism and response, iron homeostasis, heme trafficking, energy metabolism, autophagy, apoptosis, cell cycle regulation, cell migration, neural functions, and tumorigenesis and cancer progression...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28380609/age-related-effects-on-markers-of-inflammation-and-cartilage-metabolism-in-response-to-an-intra-articular-lipopolysaccharide-challenge-in-horses
#19
M K Kahn, J A Coverdale, J L Leatherwood, C E Arnold, R A Dabareiner, A N Bradbery, A A Millican, T H Welsh
Eighteen Quarter Horses were used in a randomized complete design for a 28-d experiment to evaluate age-related effects on inflammation and cartilage turnover after induction of a single inflammatory insult using lipopolysaccharide (LPS). Horses were grouped by age as yearlings (3 males and 3 females), 2 to 3 yr olds (2/3 yr old; 2 males and 4 females), and skeletally mature 5 to 8 yr olds (mature; 2 males and 4 females). On d 0, all horses were individually housed and fed diets that met or exceeded requirements...
February 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28373120/molecular-cloning-mrna-expression-and-nutritional-regulation-of-a-%C3%AE-6-fatty-acyl-desaturase-like-gene-of-mud-crab-scylla-paramamosain
#20
Zhideng Lin, Meilin Hao, Dashi Zhu, Shengkang Li, Xiaobo Wen
Fatty acyl desaturases (Fads) are critical enzymes in the pathways for the biosynthesis of the highly unsaturated fatty acids (HUFA). Here we report on the molecular cloning, tissue expression and nutritional regulation of a Δ6 fatty acyl desaturase-like (Δ6 Fad-like) gene from mud crab, Scylla paramamosain. The full-length cDNA was 1973bp, with a 201bp of 5'-UTR, a 443bp of 3'-UTR, and an ORF of 1329bp that encoded a protein of 442 amino acids. Bioinformatics analysis showed that the deduced peptide sequence possessed the typical features of the microsomal Fads, including N-terminal cytochrome b5 domain containing the heme-binding motif (H-P-G-G), three histidine-rich boxes and three membrane-spanning regions...
March 31, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
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