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https://www.readbyqxmd.com/read/29677365/age-related-changes-to-human-tear-composition
#1
Alessandra Micera, Antonio Di Zazzo, Graziana Esposito, Rosa Longo, William Foulsham, Roberto Sacco, Roberto Sgrulletta, Stefano Bonini
Purpose: We characterize age-associated alterations in the expression of inflammatory mediators and tissue remodeling factors in human tears. Methods: A total of 75 consecutive volunteers (32 male/44 female; 19-93 years) underwent clinical assessment of ocular surface status, ocular surface disease index (OSDI) grading and tear sampling. The volunteers were categorized into three groups: young (18-40 years), middle-aged (41-60 years), and old (>60 years). Total protein profiles and chip-based protein array evaluations were conducted to investigate the expression of 60 potential candidates, including pro-/anti-inflammatory mediators and tissue remodeling factors...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29675174/a-modular-synthetic-route-to-size-defined-immunogenic-haemophilus-influenzae-b-antigens-is-key-to-the-identification-of-an-octasaccharide-lead-vaccine-candidate
#2
J Y Baek, A Geissner, D C K Rathwell, D Meierhofer, C L Pereira, P H Seeberger
The first glycoconjugate vaccine using isolated glycans was licensed to protect children from Haemophilus influenzae serotype b (Hib) infections. Subsequently, the first semisynthetic glycoconjugate vaccine using a mixture of antigens derived by polymerization targeted the same pathogen. Still, a detailed understanding concerning the correlation between oligosaccharide chain length and the immune response towards the polyribosyl-ribitol-phosphate (PRP) capsular polysaccharide that surrounds Hib remains elusive...
February 7, 2018: Chemical Science
https://www.readbyqxmd.com/read/29675105/association-of-wwox-rs9926344-polymorphism-with-poor-prognosis-of-hepatocellular-carcinoma
#3
Wanyong Chen, Chenhao Zhou, Wentao Zhang, Manar Atyah, Yirui Yin, Lei Guo, Weiguo Tang, Qiongzhu Dong, Qinghai Ye, Ning Ren
Introduction: The WW domain-containing oxidoreductase (WWOX), widely expressed in human tissues, is considered as a tumor suppressor gene and plays an important role in the incidence and progression of human cancer, HCC included. This study was to investigate the correlation between single nucleotide polymorphisms (SNPs) of the WWOX gene and the prognosis of hepatocellular carcinoma (HCC) patients. Materials and Methods: After a total of 152 HCC patients were recruited, 8 cases with tumor recurrence within 2-years after operation and 8 cases without recurrence were selected randomly for SNP genotyping and screening using Affymetrix Array 6...
2018: Journal of Cancer
https://www.readbyqxmd.com/read/29675000/exploring-additional-dimensions-of-complexity-in-inhibitor-design-for-serine-%C3%AE-lactamases-mechanistic-and-intra-and-inter-molecular-chemistry-approaches
#4
REVIEW
Focco van den Akker, Robert A Bonomo
As a bacterial resistance strategy, serine β-lactamases have evolved from cell wall synthesizing enzymes known as penicillin-binding proteins (PBP), by not only covalently binding β-lactam antibiotics but, also acquiring mechanisms of deacylating these antibiotics. This critical deacylation step leads to release of hydrolyzed and inactivated β-lactams, thereby providing resistance for the bacteria against these antibiotics targeting the cell wall. To combat β-lactamase-mediated antibiotic resistance, numerous β-lactamase inhibitors were developed that utilize various strategies to inactivate the β-lactamase...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29673407/hypercalcemia-as-a-rare-presentation-of-angioimmunoblastic-t-cell-lymphoma-a-case-report
#5
Sana Chams, Inaya Hajj Hussein, Skye El Sayegh, Nour Chams, Khalid Zakaria
BACKGROUND: Angioimmunoblastic T cell lymphoma is a rare malignancy, accounting for only 2% of all non-Hodgkin lymphomas, first described in the 1970s and subsequently accepted as a distinct entity in the current World Health Organization classification. Due to the paucity of this disease, there is still no identifiable etiology, no consistent risk factors, and the pathogenesis remains unclear. CASE PRESENTATION: An 83-year-old Caucasian man presented to an emergency department with palpitations and was found to have atrial fibrillation...
April 20, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29673332/expression-of-cytokines-in-aqueous-humor-from-fungal-keratitis-patients
#6
Yingnan Zhang, Qingfeng Liang, Yang Liu, Zhiqiang Pan, Christophe Baudouin, Antoine Labbé, Qingxian Lu
BACKGROUND: Although a series of reports on corneal fungal infection have been published, studies on pathogenic mechanisms and inflammation-associated cytokines remain limited. In this study, aqueous humor samples from fungal keratitis patients were collected to examine cytokine patterns and cellular profile for the pathogenesis of fungal keratitis. METHODS: The aqueous humor samples were collected from ten patients with advanced stage fungal keratitis. Eight aqueous humor samples from patients with keratoconus or corneal dystrophy were taken as control...
April 19, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29673330/modular-assembly-of-transposable-element-arrays-by-microsatellite-targeting-in-the-guayule-and-rice-genomes
#7
José A Valdes Franco, Yi Wang, Naxin Huo, Grisel Ponciano, Howard A Colvin, Colleen M McMahan, Yong Q Gu, William R Belknap
BACKGROUND: Guayule (Parthenium argentatum A. Gray) is a rubber-producing desert shrub native to Mexico and the United States. Guayule represents an alternative to Hevea brasiliensis as a source for commercial natural rubber. The efficient application of modern molecular/genetic tools to guayule improvement requires characterization of its genome. RESULTS: The 1.6 Gb guayule genome was sequenced, assembled and annotated. The final 1.5 Gb assembly, while fragmented (N50  = 22 kb), maps > 95% of the shotgun reads and is essentially complete...
April 19, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29673197/polyamine-metabolism-and-oxidative-protein-folding-in-the-er-as-ros-producing-systems-neglected-in-virology
#8
REVIEW
Olga A Smirnova, Birke Bartosch, Natalia F Zakirova, Sergey N Kochetkov, Alexander V Ivanov
Reactive oxygen species (ROS) are produced in various cell compartments by an array of enzymes and processes. An excess of ROS production can be hazardous for normal cell functioning, whereas at normal levels, ROS act as vital regulators of many signal transduction pathways and transcription factors. ROS production is affected by a wide range of viruses. However, to date, the impact of viral infections has been studied only in respect to selected ROS-generating enzymes. The role of several ROS-generating and -scavenging enzymes or cellular systems in viral infections has never been addressed...
April 17, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29671412/possible-molecular-markers-for-the-diagnosis-of-pancreatic-ductal-adenocarcinoma
#9
Quan Shen, Miao Yu, Jiang-Kun Jia, Wen-Xi Li, Yu-Wei Tian, Huan-Zhou Xue
BACKGROUND We aimed to identify pivotal genes and pathways involved in pancreatic ductal adenocarcinoma (PDAC), and explore possible molecular markers for the early diagnosis of the disease. MATERIAL AND METHODS The array data of GSE74629, including 34 PDAC samples and 16 healthy samples, was downloaded from GEO (Gene Expression Omnibus) database. Then, the DEGs (differentially expressed genes) in PDAC samples were compared with healthy samples using limma (linear models for microarray). Gene functional interaction networks were analyzed with Cytoscape and ReactomeFIViz...
April 19, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29671116/mpdu1-regulates-ceacam1-and-cell-adhesion-in-vitro-and-in-vivo
#10
Daniel C Bennett, Aurelie Cazet, Jon Charest, Joseph N Contessa
N-linked glycosylation (NLG) is a co-translational modification that is essential for the folding, stability, and trafficking of transmembrane (TM) and secretory glycoproteins. Efficient NLG requires the stepwise synthesis and en bloc transfer of a 14-sugar carbohydrate known as a lipid-linked oligosaccharide (LLO). The genetics of LLO biosynthesis have been established in yeast and Chinese hamster systems, but human models of LLO biosynthesis are lacking. In this study we report that Kato III human gastric cancer cells represent a model of deficient LLO synthesis, possessing a homozygous deletion of the LLO biosynthesis factor, MPDU1...
April 18, 2018: Glycoconjugate Journal
https://www.readbyqxmd.com/read/29670832/innovations-in-biomedical-nanoengineering-nanowell-array-biosensor
#11
REVIEW
YoungTae Seo, Sunil Jeong, JuKyung Lee, Hak Soo Choi, Jonghan Kim, HeaYeon Lee
Nanostructured biosensors have pioneered biomedical engineering by providing highly sensitive analyses of biomolecules. The nanowell array (NWA)-based biosensing platform is particularly innovative, where the small size of NWs within the array permits extremely profound sensing of a small quantity of biomolecules. Undoubtedly, the NWA geometry of a gently-sloped vertical wall is critical for selective docking of specific proteins without capillary resistances, and nanoprocessing has contributed to the fabrication of NWA electrodes on gold substrate such as molding process, e-beam lithography, and krypton-fluoride (KrF) stepper semiconductor method...
2018: Nano Convergence
https://www.readbyqxmd.com/read/29670469/dietary-n-3-pufa-may-attenuate-experimental-colitis
#12
Cloé Charpentier, Ronald Chan, Emmeline Salameh, Khaly Mbodji, Aito Ueno, Moïse Coëffier, Charlène Guérin, Subrata Ghosh, Guillaume Savoye, Rachel Marion-Letellier
Background: Inflammatory bowel diseases (IBD) occurred in genetically predisposed people exposed to environmental triggers. Diet has long been suspected to contribute to the development of IBD. Supplementation with n-3 polyunsaturated fatty acids (PUFA) protects against intestinal inflammation in rodent models while clinical trials showed no benefits. We hypothesized that intervention timing is crucial and dietary fatty acid pattern may influence intestinal environment to modify inflammation genesis...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29670400/-anln-functions-as-a-key-candidate-gene-in-cervical-cancer-as-determined-by-integrated-bioinformatic-analysis
#13
Leilei Xia, Xiaoling Su, Jizi Shen, Qi Meng, Jiuqiong Yan, Caihong Zhang, Yu Chen, Han Wang, Mingjuan Xu
Background: Cervical cancer, one of the leading causes of female deaths, remains a top cause of mortality in gynecologic oncology and tends to affect younger individuals. However, the pathogenesis of cervical cancer is still far from clear. Given the high incidence and mortality of cervical cancer, uncovering the causes and pathogenesis as well as identifying novel biomarkers are of great significance and are desperately needed. Materials and methods: First, raw data were downloaded from the Gene Expression Omnibus database...
2018: Cancer Management and Research
https://www.readbyqxmd.com/read/29670348/effects-of-hydrogenated-tio-2-nanotube-arrays-on-protein-adsorption-and-compatibility-with-osteoblast-like-cells
#14
Ran Lu, Caiyun Wang, Xin Wang, Yuji Wang, Na Wang, Joshua Chou, Tao Li, Zhenting Zhang, Yunhan Ling, Su Chen
Background: Modified titanium (Ti) substrates with titanium dioxide (TiO2 ) nanotubes have broad usage as implant surface treatments and as drug delivery systems. Methods: To improve drug-loading capacity and accelerate bone integration with titanium, in this study, we hydrogenated anodized titanium dioxide nanotubes (TNTs) by a thermal treatment. Three groups were examined, namely: hydrogenated TNTs (H2 -TNTs, test), unmodified TNTs (air-TNTs, control), and Ti substrates (Ti, control)...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29669823/recurrent-patterns-of-protein-expression-signatures-in-pediatric-acute-lymphoblastic-leukemia-recognition-and-therapeutic-guidance
#15
Fieke W Hoff, Chenyue W Hu, Yihua Qiu, Andrew Ligeralde, Suk-Young Yoo, Eveline Sjm De Bont, Amina A Qutub, Terzah M Horton, Steven M Kornblau
Pediatric acute lymphoblastic leukemia (ALL) is the most common pediatric malignancy, and the second leading cause of pediatric cancer death in developed countries. While the cure rate for newly-diagnosed ALL is excellent, the genetic heterogeneity and chemoresistance of leukemia cells at relapse makes individualized curative treatment plans difficult. We hypothesize that genetic events would coalesce into a finite number of protein signatures that could guide the design of individualized therapy. Custom Reverse Phase Protein Arrays were produced from pediatric ALL (n=73) and normal CD34+ (n=10) samples with 194 validated antibodies...
April 18, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29669821/recognition-of-recurrent-protein-expression-patterns-in-pediatric-acute-myeloid-leukemia-identified-new-therapeutic-targets
#16
Fieke W Hoff, Chenyue W Hu, Yihua Qiu, Andrew Ligeralde, Suk-Young Yoo, Hasan Mahmud, Eveline Sjm De Bont, Amina A Qutub, Terzah M Horton, Steven M Kornblau
Heterogeneity in the genetic landscape of pediatric acute myeloid leukemia (AML) makes personalized medicine challenging. As genetic events are mediated by the expression and function of proteins, recognition of recurrent protein patterns could enable classification of pediatric AML patients and could reveal crucial protein dependencies. This could help to rationally select combinations of therapeutic targets. To determine if protein expression levels could be clustered into functionally relevant groups, custom Reverse Phase Protein Arrays (RPPA) were performed on pediatric AML (n=95) and CD34+ normal bone marrow (n=10) clinical specimens using 194 validated antibodies...
April 18, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29669788/h19-induces-abdominal-aortic-aneurysm-development-and-progression
#17
Daniel Y Li, Albert Busch, Hong Jin, Ekaterina Chernogubova, Jaroslav Pelisek, Joakim Karlsson, Bengt Sennblad, Shengliang Liu, Shen Lao, Patrick Hofmann, Alexandra Bäcklund, Suzanne M Eken, Joy Roy, Per Eriksson, Brian Dacken, Deepak Ramanujam, Anne Dueck, Stefan Engelhardt, Reinier A Boon, Hans-Henning Eckstein, Joshua M Spin, Philip S Tsao, Lars Maegdefessel
Background -Long noncoding RNAs (lncRNAs) have emerged as critical molecular regulators in various biological processes and diseases. Here we sought to identify and functionally characterize lncRNAs as potential mediators in abdominal aortic aneurysm (AAA) development. Methods -We profiled RNA transcript expression in two murine AAA models, Angiotensin II (ANGII) infusion in ApoE-/- mice ( n =8) and porcine pancreatic elastase (PPE) instillation in C57BL/6 wildtype mice ( n =12). The lncRNA H19 was identified as one of the most highly up-regulated transcripts in both mouse aneurysm models compared to sham-operated controls...
April 18, 2018: Circulation
https://www.readbyqxmd.com/read/29669747/the-role-of-the-microglial-cx3cr1-pathway-in-the-post-natal-maturation-of-retinal-photoreceptors
#18
Andrew I Jobling, Michelle Waugh, Kirstan A Vessey, Joanna A Phipps, Lidia Trogrlic, Una Greferath, Samuel A Mills, Zhi L Tan, Michelle M Ward, Erica L Fletcher
Microglia are the resident immune cells of the CNS and their response to infection, injury and disease is well documented. More recently, microglia have been shown to play a role in normal CNS development, with the fractalkine-Cx3cr1 signalling pathway of particular importance. This work describes the interaction between the light sensitive photoreceptors and microglia during eye opening, a time of post-natal photoreceptor maturation. Genetic removal of Cx3cr1 ( Cx3cr1GFP/GFP ), led to an early retinal dysfunction soon after eye opening (P17) and cone photoreceptor loss (P30 onwards) in mice of either sex...
April 18, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29669585/endoplasmic-reticulum-stress-in-perivascular-adipose-tissue-promotes-destabilization-of-atherosclerotic-plaque-by-regulating-gm-csf-paracrine
#19
Ru Ying, Sheng-Wei Li, Jia-Yuan Chen, Hai-Feng Zhang, Ying Yang, Zhen-Jie Gu, Yang-Xin Chen, Jing-Feng Wang
BACKGROUND: Perivascular adipose tissue (PVAT) accelerates plaque progression and increases cardiovascular risk. We tested the hypothesis that PVAT contributed to plaque vulnerability and investigated whether endoplasmic reticulum stress (ER stress) in PVAT played an important role in vulnerable plaque. METHODS: We transplanted thoracic aortic PVAT or subcutaneous adipose tissue as a control, from donor mice to carotid arteries of recipient apolipoprotein E deficient (apoE-/- ) mice after removing carotid artery collar placed for 6 weeks...
April 18, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29667328/insights-into-the-regulation-of-cbf-cold-signaling-in-plants
#20
REVIEW
Jingyan Liu, Yiting Shi, Shuhua Yang
Cold temperatures, a major abiotic stress, threaten the growth and development of plants worldwide. To cope with this adverse environmental cue, plants from temperate climates have evolved an array of sophisticated mechanisms to acclimate to cold periods, increasing their ability to tolerate freezing stress. Over the last decade, significant progress has been made in determining the molecular mechanisms underpinning cold acclimation following the identification of several pivotal components, including candidates for cold sensors, protein kinases, and transcription factors...
April 18, 2018: Journal of Integrative Plant Biology
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