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https://www.readbyqxmd.com/read/29224130/molecular-epidemiology-and-characterization-of-bovine-leukemia-virus-in-domestic-yaks-bos-grunniens-on-the-qinghai-tibet-plateau-china
#1
Meng Wang, Yun Wang, Abdul Rasheed Baloch, Yangyang Pan, Fang Xu, Lili Tian, Qiaoying Zeng
Bovine leukemia virus (BLV) is a member of the genus Deltaretrovirus of the family Retroviridae and cause a chronic lymphosarcoma, which is extensive in cattle. In yaks (Bos grunniens), the distribution, strains and genetic characteristics of BLV have rarely been studied. The aim of our study was to investigate BLV infections in domestic yaks and determine the genetic variability of BLV circulating in a region of the Qinghai Tibet Plateau, China. Blood samples were collected from 798 yaks, which were from different farms from Gansu, Qinghai and Sichuan provinces surrounding the Qinghai-Tibet Plateau...
December 9, 2017: Archives of Virology
https://www.readbyqxmd.com/read/29223737/synthesis-and-characterization-of-small-sized-gold-nanoparticles-coated-by-bovine-serum-albumin-bsa-for-cancer-photothermal-therapy
#2
Selma M H Al-Jawad, Ali A Taha, Mohammad M F Al-Habosiy, Lamyaa F A Al-Barram
In the present study, small gold nanoparticles <5nm coated with natural protein Bovine Serum Albumin (BSA) was synthesized and characterized using UV-Vis spectrophotometer, Dynamic Light Scattering (DLS), Transmission Electron Microscopy (TEM), zeta potential and scanning electron microscopy (SEM). Three types of cancer cell lines; Rhabdomyosarcoma (RD), Murine fibroblast (L20B) and RAW 264.7 monocyte-macrophage (MQ) were tested and treated by photothermal strategy, in vitro, by conjugating BSA-AuNPs complex of (0...
December 6, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29223730/characterization-of-a-new-decellularized-bovine-pericardial-biological-mesh-structural-and-mechanical-properties
#3
Alessandra Bielli, Roberta Bernardini, Dimitrios Varvaras, Piero Rossi, Giancarlo Di Blasi, Giuseppe Petrella, Oreste Claudio Buonomo, Maurizio Mattei, Augusto Orlandi
Implants made from naturally-derived biomaterials, also called biological meshes or biomeshes, typically derive from decellularized extracellular matrix of either animal or human tissue. Biomeshes have many biomedical applications such as ligament repair, bone and cartilage regeneration and soft tissue replacement. Bovine collagen is one of the most widely used and abundantly available xenogenic materials. In particular, bovine pericardium is widely used as extracellular matrix bioprosthetic tissue. The efficiency of a pericardial mesh to function as scaffold depends on the quality of the decellularization protocol used...
December 5, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29223655/in%C3%A2-vitro-cultured-bovine-endometrial-cells-recognize-embryonic-sex
#4
E Gómez, M J Sánchez-Calabuig, D Martin, S Carrocera, A Murillo, E Correia-Alvarez, P Herrero, N Canela, A Gutiérrez-Adán, S Ulbrich, M Muñoz
Endometrial cell co-culture (ECC) with single embryo may reflect endometrium responses in vivo. Bovine Day-6 in vitro-produced morulae were cultured until Day-8 in modified synthetic oviductal fluid (mSOF), or on the epithelial side of ECC. Expression of epithelial- and stromal-cell transcripts was analyzed by RT-PCR in ECC with one male (ME) or female embryo (FE). Concentrations of ARTEMIN (ARTN) and total protein were determined in epithelial cell-conditioned medium. ECCs yielded embryos with more cells in the inner cell mass than embryos cultured in mSOF...
December 5, 2017: Theriogenology
https://www.readbyqxmd.com/read/29223155/recombinant-human-erythropoietin-with-additional-processable-protein-domains-purification-of-protein-synthesized-in-escherichia-coli-heterologous-expression-system
#5
T M Grunina, A V Demidenko, A M Lyaschuk, M S Poponova, Z M Galushkina, L A Soboleva, S A Cherepushkin, N B Polyakov, D A Grumov, A I Solovyev, V G Zhukhovitsky, I S Boksha, M E Subbotina, A V Gromov, V G Lunin, A S Karyagina
Three variants of human recombinant erythropoietin (rhEPO) with additional N-terminal protein domains were obtained by synthesis in an Escherichia coli heterologous expression system. These domains included (i) maltose-binding protein (MBP), (ii) MBP with six histidine residues (6His) in N-terminal position, (iii) s-tag (15-a.a. oligopeptide derived from bovine pancreatic ribonuclease A) with N-terminal 6His. Both variants of the chimeric protein containing MBP domain were prone to aggregation under nondenaturing conditions, and further purification of EPO after the domain cleavage by enterokinase proved to be impossible...
November 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/29223088/probing-molecular-interaction-mechanisms-of-organic-fouling-on-polyamide-membrane-using-a-surface-forces-apparatus-implication-for-wastewater-treatment
#6
Qingye Lu, Jun Huang, Omar Maan, Yang Liu, Hongbo Zeng
Surface fouling is the dominant fouling mechanism of thin-film composite (TFC) membranes used in reverse osmosis (RO) technology. Understanding the complex interactions between foulant-membrane which drive the attachment and growth of foulants on membrane surface is of both fundamental and practical importance. This work aims to understand the molecular interaction mechanisms of organic fouling on RO-TFC membranes. A surface forces apparatus (SFA) was employed to directly measure the interaction forces and time-dependent adsorption behaviors between model organic foulants: humic acid (HA), bovine serum albumin (BSA), and lipopolysaccharides (LPS) and a polyamide (PA) thin film...
December 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29222046/erratum-to-ultrasound-mediated-nanoparticle-delivery-across-ex-vivo-bovine-retina-after-intravitreal-injection-eur-j-pharm-biopharm-119-2017-125-136
#7
Di Huang, Ying-Shan Chen, Sachin S Thakur, Ilva D Rupenthal
No abstract text is available yet for this article.
December 5, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29221796/synthesis-and-antibacterial-activity-of-new-peptides-from-alfalfa-rubisco-protein-hydrolysates-and-mode-of-action-via-a-membrane-damage-mechanism-against-listeria-innocua
#8
Sabrine Kobbi, Naima Nedjar, Nourdine Chihib, Rafik Balti, Mickael Chevalier, Amandine Silvain, Semia Chaabouni, Pascal Dhulster, Ali Bougatef
In this work we evaluated the mode of action of six new synthesized peptides (Met-Asp-Asn; Glu-leu-Ala-Ala-Ala-Cys; Leu-Arg-Asp-Asp-Phe; Gly-Asn-Ala-Pro-Gly-Ala-Val-Ala; Ala-Leu-Arg-Met-Ser-Gly and Arg-Asp-Arg-Phe-Leu), previously identified, from the most active peptide fractions of RuBisCO peptic hydrolysate against Listeria innocua via a membrane damage mechanism. Antibacterial effect and the minimum inhibitory concentrations (MIC) of these peptides were evaluated against six strains and their hemolytic activities towards bovine erythrocytes were determined...
December 5, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29221760/substrate-specificity-and-transfucosylation-activity-of-gh29-%C3%AE-l-fucosidases-for-enzymatic-production-of-human-milk-oligosaccharides
#9
Birgitte Zeuner, Jan Muschiol, Jesper Holck, Mateusz Lezyk, Mattias Raae Gedde, Carsten Jers, Jørn Dalgaard Mikkelsen, Anne S Meyer
Human milk oligosaccharides (HMOs) constitute a unique family of bioactive lactose-based molecules present in human breast milk. HMOs are of major importance for infant health and development but also virtually absent from bovine milk used for infant formula. Among the HMOs, the fucosylated species are the most abundant. Transfucosylation catalysed by retaining α-L-fucosidases is a new route for manufacturing biomimetic HMOs. Seven α-L-fucosidases from glycosyl hydrolase family 29 were expressed, characterized in terms of substrate specificity and thermal stability, and shown to be able to catalyse transfucosylation...
December 5, 2017: New Biotechnology
https://www.readbyqxmd.com/read/29221591/eradicating-bvd-reviewing-irish-programme-data-and-model-predictions-to-support-prospective-decision-making
#10
H-H Thulke, M Lange, J A Tratalos, T A Clegg, G McGrath, L O'Grady, P O'Sullivan, M L Doherty, D A Graham, S J More
Bovine Viral Diarrhoea is an infectious production disease of major importance in many cattle sectors of the world. The infection is predominantly transmitted by animal contact. Postnatal infections are transient, leading to immunologically protected cattle. However, for a certain window of pregnancy, in utero infection of the foetus results in persistently infected (PI) calves being the major risk of BVD spread, but also an efficient target for controlling the infection. There are two acknowledged strategies to identify PI animals for removal: tissue tag testing (direct; also known as the Swiss model) and serological screening (indirect by interpreting the serological status of the herd; the Scandinavian model)...
November 23, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/29221114/interferon-%C3%AF-increases-bola-i-for-implantation-during-early-pregnancy-in-dairy-cows
#11
Zhe Zhu, Binbin Li, Yue Wu, Xiao Wang, GanZhen Deng
Interferon-τ (IFN-τ) signals pregnancy recognition in ruminants. We investigated the effects of IFN-τ produced by embryo trophoblastic cells (ETCs) on expression of bovine leukocyte antigen-I (BoLA-I), a bovine analogue of human MHC-I, in endometrial luminal epithelial cells (EECs) during early pregnancy in dairy cows. Expression of IFN-τ and BoLA-I was increased in endometrial tissues during early pregnancy. Expression of the anti-inflammatory cytokine IL-10 was increased in endometrial tissues, while expression of the pro-inflammatory cytokine IL-6 was decreased, indicating immunosuppression...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29220162/albumin-assisted-synthesis-of-ultra-small-fes2-nanodots-for-imaging-guided-photothermal-enhanced-photodynamic-therapy
#12
Qiutong Jin, Jingjing Liu, Wenjun Zhu, Ziliang Dong, Zhuang Liu, Liang Cheng
Current mainstream cancer treatment methods have their limitations. New approaches are thus desired to assist our battle against cancer. Herein, multifunctional ultra-small FeS2 nanodots with the size of 7 nm are synthesized by biomineralization and used for imaging-guided combined tumor therapy. Bovine serum albumin (BSA) which acts as the reaction template to induce the mineralization of FeS2 nanomaterials under alkaline condition, could also be used as a drug delivery system for coupling photosensitive molecule such as chlorin e6 (Ce6)...
December 8, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29220053/the-mechanism-of-reduced-igg-ige-binding-of-%C3%AE-lactoglobulin-by-pulsed-electric-field-pretreatment-combined-with-glycation-revealed-by-ecd-fticr-ms
#13
Wenhua Yang, Zongcai Tu, Hui Wang, Lu Zhang, Igor A Kaltashov, Yunlong Zhao, Chendi Niu, Honglin Yao, Wenfeng Ye
Bovine β-lactoglobulin (β-Lg) is a major allergen existing in milk and causes about 90% of IgE-mediated cow's milk allergies. Previous studies showed that pulsed electric field (PEF) treatment could partially unfold the protein, which may contribute to the improvement of protein glycation. In this study, the effect of PEF pretreatment combined with glycation on the IgG/IgE-binding ability and the structure of β-Lg was investigated. The result showed that PEF pretreatment combined with glycation significantly reduced the IgG and IgE binding abilities, which was attributed to the changes of secondary and tertiary structure and the increase in glycation sites and degree of substitution per peptide (DSP) value determined by electron capture dissociation Fourier transform ion cyclotron resonance mass spectrometry (ECD/FTICR-MS)...
December 8, 2017: Food & Function
https://www.readbyqxmd.com/read/29219221/improved-developmental-competence-in-embryos-treated-with-lycopene-during-in-vitro-culture
#14
M M R Chowdhury, Ayman Mesalam, Imran Khan, Myeong-Don Joo, Kyeong-Lim Lee, Lianguang Xu, Fahmida Afrin, Il-Keun Kong
In vitro embryo development remains suboptimal compared to in vivo development due to the challenge from various stressors associated with in vitro culturing of oocytes. When 0.2 μM lycopene was added to oocyte in vitro maturation and embryo culture media, to assess its antioxidant effects on embryo development, we observed a significant (p<0.05) increase in cleavage and blastocyst development rates compared to the corresponding controls (84.3 ± 0.6% vs. 73.1 ± 1.9% and 41.0 ± 1.4% vs. 33.4 ± 0.7%, respectively)...
December 8, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/29218634/walking-the-seven-lines-binuclear-copper-a-in-cytochrome-c-oxidase-and-nitrous-oxide-reductase
#15
REVIEW
Peter M H Kroneck
The enzymes nitrous oxide reductase (N2OR) and cytochrome c oxidase (COX) are constituents of important biological processes. N2OR is the terminal reductase in a respiratory chain converting N2O to N2 in denitrifying bacteria; COX is the terminal oxidase of the aerobic respiratory chain of certain bacteria and eukaryotic organisms transforming O2 to H2O accompanied by proton pumping. Different spectroscopies including magnetic resonance techniques, were applied to show that N2OR has a mixed-valent Cys-bridged [Cu1...
December 7, 2017: Journal of Biological Inorganic Chemistry: JBIC
https://www.readbyqxmd.com/read/29217872/an-integrated-bioprocess-to-recover-bovine-milk-oligosaccharides-from-colostrum-whey-permeate
#16
Juliana M L N de Moura Bell, Joshua L Cohen, Leticia F M C de Aquino, Hyeyoung Lee, Vitor L de Melo Silva, Yan Liu, Paola Domizio, Daniela Barile
A major challenge in isolating oligosaccharides from dairy streams is to enrich oligosaccharides while simultaneously reducing the content of simple sugars (mono- and disaccharides) that do not possess the desired prebiotic functions. An integrated approach based on optimized conditions that favor maximum lactose hydrolysis, monosaccharide fermentation and oligosaccharides recovery by nanofiltration was developed. Upon complete lactose hydrolysis and fermentation of the monosaccharides by yeast, nanofiltration of fermented whey permeate from colostrum enabled the recovery of 95% of the oligosaccharides at high purity...
January 2018: Journal of Food Engineering
https://www.readbyqxmd.com/read/29217767/hypothetical-route-of-the-introduction-of-schmallenberg-virus-into-ireland-using-two-complementary-analyses
#17
Guy McGrath, Simon J More, Ronan O'Neill
Ireland lost its official freedom from Schmallenberg virus (SBV) in October 2012. The route of introduction is uncertain, with long-distance displacement of infected Culicoides, biting midges, by suitable wind flows considered to be the most likely source. The authors investigated the potential introduction of SBV into Ireland through a Culicoides incursion event in the summer of 2012. They conducted SBV serology on archived bovine sera to identify the prospective dispersal window, then used atmospheric dispersion modelling during periods around this window to identify environmental conditions the authors considered suitable for atmospheric dispersal of Culicoides from potential infected source locations across Southern England...
December 7, 2017: Veterinary Record
https://www.readbyqxmd.com/read/29217378/serological-evidence-of-bovine-herpesvirus-1-bovine-viral-diarrhea-virus-and-schmallenberg-virus-infections-in-relation-to-reproductive-disorders-in-dairy-cattle-in-ethiopia
#18
Kassahun Asmare, Berhanu Sibhat, Gelagay Ayelet, Endrias Zewdu Gebremedhin, Kassaye Aragaw Lidete, Eystien Skjerve
Reproductive disorders in dairy cattle have been noted to be common in urban and peri-urban dairy production system in Ethiopia. The available reports on the causes of these disorders however, are not conclusive. A case-control study was designed to investigate the possible association of major reproductive disorders in dairy cattle with exposure status to bovine herpesvirus-1 (BHV-1), bovine viral diarrhea virus (BVDV) and Schmallenberg virus (SBV). Cows with history of abortion/stillbirth were considered as cases (n=204) while, those cows with no such history were taken as control (n=359)...
December 4, 2017: Acta Tropica
https://www.readbyqxmd.com/read/29217302/c-source-metabolic-profilings-of-foodborne-shiga-toxin-producing-e-coli-match-serogroup-differentiations-and-highlight-functional-adaptations
#19
Stéphane Kerangart, Benoit Cournoyer, Estelle Loukiadis
The tropism of pathogenic STEC for foodstuffs and cattle reservoir is related to functional specializations. An investigation of C-source utilization patterns among and between STEC serogroups was performed using omnilog phenotypic microarrays (OM). OM functional groupings were compared with STEC phylogroups, seropathotypes, EFSA's molecular risk assessment groups and serogroups. OM INT reduction activities of 37 STEC strains growing on 190 C-substrates were compared. Each strain had its own specific C-utilization profile but 23% of the substrates was used by all strains, 47% by none, and 30% was variably metabolized...
December 4, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29217202/cell-free-production-purification-and-characterization-of-human-mitochondrial-adp-atp-carriers
#20
Aleksandra Woznicka-Misaila, Céline Juillan-Binard, Delphine Baud, Eva Pebay-Peyroula, Stéphanie Ravaud
Mitochondrial Carriers (MCs) are responsible for fluent traffic of a variety of compounds that need to be shuttled via mitochondrial inner membranes to maintain cell metabolism. The ADP/ATP Carriers (AACs) are responsible for the import of ADP inside the mitochondria and the export of newly synthesized ATP. In human, four different AACs isoforms are described which are expressed in tissue-specific manner. They are involved in different genetic diseases and play a role in cancerogenesis. Up to now only the structures of the bovine (isoform 1) and yeast (isoforms 2 and 3) AAC have been determined in one particular conformation, obtained in complex with the CATR inhibitor...
December 4, 2017: Protein Expression and Purification
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