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https://www.readbyqxmd.com/read/28647817/molecular-characterization-of-the-cd79a-and-cd79b-and-its-role-against-aeromonas-hydrophila-infection-in-chinese-sucker-myxocyprinus-asiaticus
#1
Huan Li, Yujin Li, Xiaoping Zhang, Yafeng Wang, Wufeng Zhang, Xia Wu, Zhijian Wang
CD79a and CD79b heterodimers are the important signaling components of B cell receptor (BCR) complex which plays a crucial role in B cell development and antibody production. In the present study, CD79a and CD79b homologues from Chinese sucker (Myxocyprinus asiaticus), namely MaCD79a and MaCD79b, were identified and their expression at early developmental stages and under constitutive and stimulated conditions were investigated. The cDNA sequences for MaCD79a and MaCD79b contained open reading frame of 678 and 636 bp in length for 225 and 211 amino acid residues, respectively...
June 25, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28647748/single-level-anterior-cervical-corpectomy-and-fusion-using-a-new-3d-printed-anatomy-adaptive-titanium-mesh-cage-for-treatment-of-cervical-spondylotic-myelopathy-and-ossification-of-the-posterior-longitudinal-ligament-a-retrospective-case-series-study
#2
Teng Lu, Chao Liu, Baohui Yang, Jiantao Liu, Feng Zhang, Dong Wang, Haopeng Li, Xijing He
BACKGROUND The aim of this study was to evaluate the clinical and radiological outcomes of the use of a new 3D-printed anatomy-adaptive titanium mesh cage (AA-TMC) for single-level anterior cervical corpectomy and fusion (ACCF) in patients with cervical spondylotic myelopathy (CSM) and ossification of the posterior longitudinal ligament (OPLL). MATERIAL AND METHODS We retrospectively reviewed the records of 15 consecutive patients who underwent ACCF surgeries with AA-TMC implantation. The Japanese Orthopedic Association (JOA) scoring system, a visual analogue scale (VAS), the mean intervertebral height (MIBH) of the surgical segments, and the surgical segmental angle (SSA) were recorded preoperatively, immediately after surgery and at the final follow-up visit...
June 25, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28647506/the-s2-glycoprotein-subunit-of-porcine-epidemic-diarrhea-virus-contains-immunodominant-neutralizing-epitopes
#3
Faten A Okda, Steven Lawson, Aaron Singrey, Julie Nelson, Kyle S Hain, Lok R Joshi, Jane Christopher-Hennings, Eric A Nelson, Diego G Diel
The porcine epidemic diarrhea virus (PEDV) spike (S) protein is the major target of neutralizing antibodies against PEDV. Here immunodominant neutralizing epitopes of PEDV were identified using a panel of S-specific monoclonal antibodies (mAbs). Ten of eleven S-specific mAbs successfully neutralized PEDV infectivity in vitro. Notably, epitope mapping by peptide ELISAs revealed that nine of these mAbs recognized linear neutralizing epitopes located in the N-terminus of the S2 glycoprotein subunit (amino acids [aa] 744-759, 747-774 and/or 756-771)...
June 22, 2017: Virology
https://www.readbyqxmd.com/read/28647498/the-role-of-the-peptides-at-the-origin-of-life
#4
Søren Toxvaerd
The peptides in biosystems are polymers of L-amino acids, but they racemize slowly by an active isomerization kinetics. The chemical reactions in biosystems are, however, reversible and here we show by a thermodynamics analysis and by comprehensive Molecular Dynamics simulations of models of peptides, that the isomerization kinetics racemizes the peptides at high water activity, in agreement with experimental observations of aging of peptides, but enhances homochirality at a smaller water activity. The main conclusion of the simulations is that it is only possible to obtain and maintain homochirality in the presence of a hydrophobic compact core in a peptide of hundreds of chiral units and at a low water activity, and thus the establishment of homochirality at the origin of life and aging of proteins in biosystems might be strongly connected...
June 21, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28647493/associations-between-the-dbh-gene-plasma-dopamine-%C3%AE-hydroxylase-activity-and-cognitive-measures-in-han-chinese-patients-with-schizophrenia
#5
Zuoli Sun, Yun Ma, Wenbiao Li, Jing He, Jun Li, Xue Yang, Peixian Mao, Joseph F Cubells, Yilang Tang
The dopamine (DA) and norepinephrine (NE) systems modulate cognitive function. Dopamine β-hydroxylase (DβH) converts DA to NE, and its activity is under strong genetic control. This study examines the association of plasma DβH (pDβH) activity, DBH gene polymorphisms (-1021C>T, rs1611115 and 444G>A, rs1108580) and cognitive deficits in Han Chinese patients with schizophrenia. We assessed pDβH activity and cognitive function using the Verbal Fluency Test (VFT), Trail Making Test (TMT) A-B, Stroop color-word test and Wisconsin Card Sorting Test (WCST) in 200 patients with schizophrenia before and after 8weeks of antipsychotic treatment (96 patients completed assessments at baseline and post-treatment)...
June 21, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28647474/antiviral-profiling-of-the-capsid-assembly-modulator-bay41-4109-on-full-length-hbv-genotype-a-h-clinical-isolates-and-core-site-directed-mutants-in-vitro
#6
Jan Martin Berke, Ying Tan, Thierry Verbinnen, Pascale Dehertogh, Karen Vergauwen, Ann Vos, Oliver Lenz, Frederik Pauwels
The HBV core protein represents an attractive target for new antiviral therapies due to its multiple functions within the viral life-cycle. Here, we report the antiviral activity of the capsid assembly modulator (CAM) BAY41-4109 and two nucleos(t)ide analogues (NAs) on a diverse panel of 54 HBV clinical isolates from genotype (GT) A-H and assessed the impact of core amino acid (aa) substitutions using site-directed mutants (SDMs). The median EC50 values of BAY41-4109 across genotypes ranged from 26 nM in GT G to 215 nM in GT F irrespective of the presence of NA resistance mutations compared to 43 nM for the GT D reference construct...
June 21, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28647382/il-17a-gene-polymorphism-rs2275913-is-associated-with-the-development-of-asthma-after-bronchiolitis-in-infancy
#7
Annukka Holster, Johanna Teräsjärvi, Eero Lauhkonen, Sari Törmänen, Merja Helminen, Petri Koponen, Matti Korppi, Ville Peltola, Qiushui He, Kirsi Nuolivirta
BACKGROUND: Interleukin-17 (IL-17A) is a mainly pro-inflammatory cytokine, and IL-17 signaling implicates in the development of allergic asthma. The polymorphism rs2275913 in the promoter region of the IL-17A gene has in previous studies been associated with asthma susceptibility. The objective was to evaluate the association between IL-17A rs2275913 (-197G>A) polymorphism and post-bronchiolitis asthma and/or allergic rhinitis in a prospective 11-13 years post-bronchiolitis follow-up...
June 21, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28647331/combination-of-histidine-lysine-methionine-and-leucine-promotes-%C3%AE-casein-synthesis-via-the-mechanistic-target-of-rapamycin-signaling-pathway-in-bovine-mammary-epithelial-cells
#8
H N Gao, S G Zhao, N Zheng, Y D Zhang, S S Wang, X Q Zhou, J Q Wang
The ratio of different AA in the diets of cows is vital to improve milk protein yield. β-Casein is one of the important milk proteins with high nutritive value. However, the suitable ratio of essential amino acids (EAA) for the expression of β-casein in the immortalized bovine mammary epithelial cell line is not fully characterized. This study employed response surface methodology to determine the optimal ratio of His, Lys, Met, and Leu on β-casein expression level in vitro and clarified the effect of the 4 EAA on β-casein via the mechanistic target of rapamycin (mTOR) signaling pathway...
June 21, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28647323/mechanism-of-plant-mediated-synthesis-of-silver-nanoparticles-a-review-on-biomolecules-involved-characterisation-and-antibacterial-activity
#9
REVIEW
S Rajeshkumar, L V Bharath
Engineering a reliable and eco-accommodating methodology for the synthesis of metal nanoparticles is a crucial step in the field of nanotechnology. Plant-mediated synthesis of metal nanoparticles has been developed as a substitute to defeat the limitations of conventional synthesis approaches such as physical and chemical methods. Biomolecules, such as proteins, amino acids, enzymes, flavonoids, and terpenoids from several plant extracts have been used as a stabilising and reducing agents for the synthesis of AgNPs...
June 21, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28647192/genetic-diversity-and-phylogenetic-analysis-of-eg95-sequences-of-echinococcus-granulosus-implications-for-eg95-vaccine-application
#10
Wei Pan, De-Sheng Chen, Yun-Juan Lu, Hui-Wen Xu, Wen-Ting Hao, Ya-Wen Zhang, Su-Ping Qin, Kui-Yang Zheng, Ren-Xian Tang
OBJECTIVE: To analyse the genetic variability of EG95 sequences and provide guidance for EG95 vaccine application against Echinococcus granulosus (E. granulosus). METHODS: We analysed EG95 polymorphism by collecting total 97 different E. granulosus isolates from 12 different host species that originated from 10 different countries. Multiple sequence alignments and the homology were performed by Lasergene 1 (DNASTAR Inc., Madison, WI), and the phylogenetic analysis was performed by using MEGA5...
May 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28647164/liver-transplantation-in-new-orleans-parity-in-a-world-of-disparity
#11
Alison A Smith, Michael Darden, Zaid Al-Qurayshi, Anil S Paramesh, Mary Killackey, Emad Kandil, Geoffrey Parker, Luis Balart, Paul Friedlander, Joseph F Buell
BACKGROUND: Racial disparity in access to liver transplantation among African Americans (AA) compared to Caucasians (CA) has been well described. The aim of this investigation was to examine the presentation of AA liver transplant recipients in a socioeconomically challenged region. METHODS: 680 adult liver transplant candidates and 233 resultant recipients between 2007 and 2015 were analyzed using univariate and multivariate analyses to evaluate factors significant for transplantation...
June 21, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28647125/isogenic-mutations-in-the-moraxella-catarrhalis-cyddc-system-display-pleiotropic-phenotypes-and-reveal-the-role-of-a-palindrome-sequence-in-its-transcriptional-regulation
#12
Yosra I Nagy, Manal M M Hussein, Yasser M Ragab, Ahmed S Attia
Moraxella catarrhalis is becoming an important human respiratory tract pathogen affecting significant proportions from the population. However, still little is known about its physiology and molecular regulation. To this end, the CydDC, which is a heterodimeric ATP binding cassette transporter that has been shown to contribute to the maintenance of the redox homeostasis across the periplasm in other Gram-negative bacteria, is studied here. Amino acids multiple sequence alignments indicated that M. catarrhalis CydC is different from the CydC proteins of the bacterial species in which this system has been previously studied...
September 2017: Microbiological Research
https://www.readbyqxmd.com/read/28646828/spent-yeast-as-natural-source-of-functional-food-additives
#13
Rita Rakowska, Anna Sadowska, Ewa Dybkowska, Franciszek Świderski
Spent yeasts are by-products arising from beer and wine production which over many years have been chiefly used as feed additives for livestock. They contain many valuable and bioactive substances which has thereby generated much interest in their exploitation. Up till now, the main products obtained from beer-brewing yeasts are β-glucans and yeast extracts. Other like foodstuffs include dried brewer’s yeast, where this is dried and the bitterness removed to be fit for human consumption as well as mannan-oligosaccharides hitherto used in the feed industry...
2017: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/28646525/preliminary-characterization-of-putative-structural-cuticular-proteins-in-the-malaria-vector-anopheles-sinensis
#14
Dan Zhou, Baiyun Duan, Yan Sun, Lei Ma, Changliang Zhu, Bo Shen
BACKGROUND: The insect cuticle protects against environmental stresses such as insecticides, physical injury, dehydration and pathogenic microorganisms. Structural cuticular proteins (CPs) are the primary components, and are of interest for physiology-based pest management methods. Anopheles sinensis CPs are poorly characterised at present, therefore we performed whole genome sequence analysis and re-analysed available transcriptome data to identify potential insecticide resistance-associated CPs...
June 23, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28646429/decoupled-side-chain-and-backbone-dynamics-for-proton-translocation-m2-of-influenza-a
#15
Monoj Mon Kalita, Wolfgang B Fischer
The 97 amino acid bitopic membrane protein M2 of influenza A forms a tetrameric bundle in which two of the monomers are covalently linked via a cysteine bridge. In its tetrameric assembly the protein conducts protons across the viral envelope and within intracellular compartments during the infectivity cycle of the virus. A key residue in the translocation of the protons is His-37 which forms a planar tetrad in the configuration of the bundle accepting and translocating the incoming protons from the N terminal side, exterior of the virus, to the C terminal side, inside the virus...
July 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28646393/the-changing-landscape-of-alopecia-areata-the-therapeutic-paradigm
#16
REVIEW
Yael Renert-Yuval, Emma Guttman-Yassky
Alopecia areata (AA), a prevalent inflammatory cause of hair loss, lacks FDA-approved therapeutics for extensive cases, which are associated with very poor rates of spontaneous hair regrowth and major psychological distress. Current treatments for severe cases include broad immune-suppressants, which are associated with significant adverse effects, precluding long-term use, with rapid hair loss following treatment termination. As a result of the extent of the disease in severe cases, topical contact sensitizers and intralesional treatments are of limited use...
June 23, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28646392/the-changing-landscape-of-alopecia-areata-the-translational-landscape
#17
REVIEW
Etienne C E Wang, Angela M Christiano
Recent genetic and preclinical studies have increased our understanding of the immunopathogenesis of alopecia areata (AA). This has allowed expedited development of targeted therapies for the treatment of AA, and a paradigm shift in our approach and understanding of autoimmunity and the hair follicle. The synergy between preclinical studies, animal models, and translational studies has led to unprecedented advances in the treatment options for AA, ultimately benefiting patients who have had little recourse...
June 23, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28646338/chemotherapy-induced-gastrointestinal-toxicity-is-associated-with-changes-in-serum-and-urine-metabolome-and-fecal-microbiota-in-male-sprague-dawley-rats
#18
Richard A Forsgård, Vannina G Marrachelli, Katri Korpela, Rafael Frias, Maria Carmen Collado, Riitta Korpela, Daniel Monleon, Thomas Spillmann, Pia Österlund
PURPOSE: Chemotherapy-induced gastrointestinal toxicity (CIGT) is a complex process that involves multiple pathophysiological mechanisms. We have previously shown that commonly used chemotherapeutics 5-fluorouracil, oxaliplatin, and irinotecan damage the intestinal mucosa and increase intestinal permeability to iohexol. We hypothesized that CIGT is associated with alterations in fecal microbiota and metabolome. Our aim was to characterize these changes and examine how they relate to the severity of CIGT...
June 23, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28646298/an-on-off-on-fluorescent-probe-for-ascorbic-acid-based-on-cu-zncds-quantum-dots-and-%C3%AE-mno2-nanorods
#19
Hanbing Rao, Yao Gao, Hongwei Ge, Zhaoyi Zhang, Xin Liu, Yan Yang, Yaqin Liu, Wei Liu, Ping Zou, Yanying Wang, Xianxiang Wang, Hua He, Xianying Zeng
This work established a fluorescence approach for detecting ascorbic acid (AA) based on Cu-ZnCdS quantum dots (Cu-ZnCdS QDs) and α-MnO2 nanorods. Cu-ZnCdS QDs and α-MnO2 nanorods were characterized by high-resolution transmission electron microscopy (HRTEM), fluorescence spectroscopy, inductively coupled plasma optical emission spectroscopy (ICP-OES) and X-ray diffraction (XRD). In the presence of α-MnO2 nanorods, the fluorescence of Cu-ZnCdS QDs was greatly quenched through the inner filter effect (IFE)...
June 23, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28646170/triphenyltin-recognition-by-primary-structures-of-effector-proteins-and-the-protein-network-of-bacillus-thuringiensis-during-the-triphenyltin-degradation-process
#20
Linlin Wang, Jinshao Ye, Huase Ou, Huaming Qin, Yan Long, Jing Ke
Herein, triphenyltin (TPT) biodegradation efficiency and its transformation pathway have been elucidated. To better understand the molecular mechanism of TPT degradation, the interactions between amino acids, primary structures, and quaternary conformations of effector proteins and TPT were studied. The results verified that TPT recognition and binding depended on amino acid sequences but not on secondary, tertiary or quaternary protein structure. During this process, TPT could change the molecular weight and isoelectric point of effector proteins, induce their methylation or demethylation, and alter their conformation...
June 23, 2017: Scientific Reports
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