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https://www.readbyqxmd.com/read/28651384/agaricus-bisporus-production-on-substrates-pasteurized-by-self-heating
#1
Stephania Colmenares-Cruz, José E Sánchez, Javier Valle-Mora
The aim of this work was to determine if the self-heating pasteurization procedure is technically applicable to the cultivation of Agaricus bisporus. Firstly the substrates alone (corncob, Pangola grass and a mixture of both ingredients with wood shavings) were tested. Two supplementation trials were then undertaken using soybean, wheat bran, sheep manure, sesame seed, black bean and chia. Highest production values (BE = 176.3% and Y = 26.6 kg/m(2)) were obtained using a 9% supplement, with a formula consisting of 25% each of soybean, black bean, wheat bran and chia, added at spawning and at casing...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28651195/stereological-and-biophysical-characteristics-of-the-ovine-surfactant-system-and-its-changes-caused-by-ovine-pulmonary-adenocarcinoma
#2
Ariane Jörger, Christa Acevedo, Diana Busley, Martin Ganter, Andreas Schmiedl, Esther Humann-Ziehank
Surfactant covers the inner surface of lung alveoli and lowers the surface tension to prevent alveoli from collapsing. A lack of surfactant or its dysfunction causes dyspnea. The Jaagsiekte Sheep Retrovirus (JSRV) causes ovine pulmonary adenocarcinoma (OPA), whose typical clinical appearance is fluid running from nostrils. This fluid might contain surfactant as alveolar type II pneumocytes (AEII) are target cells for JSRV. Therefore, the progressive dyspnea during OPA might be caused partially by surfactant alterations...
June 15, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28651004/a-human-endogenous-retrovirus-derived-gene-that-can-contribute-to-oncogenesis-by-activating-the-erk-pathway-and-inducing-migration-and-invasion
#3
Cécile Lemaître, Jhen Tsang, Caroline Bireau, Thierry Heidmann, Marie Dewannieux
Endogenous retroviruses are cellular genes of retroviral origin captured by their host during the course of evolution and represent around 8% of the human genome. Although most are defective and transcriptionally silenced, some are still able to generate retroviral-like particles and proteins. Among these, the HERV-K(HML2) family is remarkable since its members have amplified relatively recently and many of them still have full length coding genes. Furthermore, they are induced in cancers, especially in melanoma, breast cancer and germ cell tumours, where viral particles, as well as the envelope protein (Env), can be detected...
June 26, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28650796/comparison-of-bovine-bone-autogenic-bone-mixture-versus-platelet-rich-fibrin-for-maxillary-sinus-grafting-histologic-and-histomorphologic-study
#4
Hakan Ocak, Nukhet Kutuk, Umut Demetoglu, Esra Balcıoglu, Saim Ozdamar, Alper Alkan
Numerous grafting materials have been used to augment the maxillary sinus floor for long-term stability and success for implant-supported prosthesis. To enhance bone formation, adjunctive blood-born growth factor sources have gained popularity during the recent years. The present study compared the use of platelet-rich fibrin (PRF) and bovine-autogenous bone mixture for maxillary sinus floor elevation. A split-face model was used to apply 2 different filling materials for maxillary sinus floor elevation in 22 healthy adult sheep...
June 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28649866/sensory-profile-of-sheep-cheeses-during-a-six-month-storage-period-as-evaluated-by-consumers
#5
Adriana Gámbaro, Lucía Maceiras, Florencia Erramouspe, Lucía Nógues, Nicolás Callejas, Ignacio Vieitez
Over the past decade, the use of check-all-that-apply questions has become an easier and faster alternative to traditional sensory profiles using trained assessors, allowing the characterisation of a product by consumers. In this study, 65 consumers evaluated the acceptability of six artisan Uruguayan sheep cheese samples during a six-month storage period, providing a descriptive profile using a check-all-that-apply questionnaire consisting of 32 sensory and non-sensory terms. Although the acceptability of five of the six samples was not modified during storage, the consumers were able to perceive changes in the texture and flavour of products, providing a sensory profile of the cheeses...
January 1, 2017: Food Science and Technology International, Ciencia y Tecnología de Los Alimentos Internacional
https://www.readbyqxmd.com/read/28649238/clostridium-chauvoei-an-evolutionary-dead-end-pathogen
#6
Lorenz Rychener, Saria InAlbon, Steven P Djordjevic, Piklu R Chowdhury, Rosangela E Ziech, Agueda C de Vargas, Joachim Frey, Laurent Falquet
Full genome sequences of 20 strains of Clostridium chauvoei, the etiological agent of blackleg of cattle and sheep, isolated from four different continents over a period of 64 years (1951-2015) were determined and analyzed. The study reveals that the genome of the species C. chauvoei is highly homogeneous compared to the closely related species C. perfringens, a widespread pathogen that affects human and many animal species. Analysis of the CRISPR locus is sufficient to differentiate most C. chauvoei strains and is the most heterogenous region in the genome, containing in total 187 different spacer elements that are distributed as 30 - 77 copies in the various strains...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28646625/fluctuating-effects-of-genetic-and-plastic-changes-in-body-mass-on-population-dynamics-in-a-large-herbivore
#7
Gabriel Pigeon, Thomas H G Ezard, Marco Festa-Bianchet, David W Coltman, Fanie Pelletier
Recent studies suggest that evolutionary changes can occur on a contemporary time scale. Hence, evolution can influence ecology and vice-versa. To understand the importance of eco-evolutionary dynamics in population dynamics, we must quantify the relative contribution of ecological and evolutionary changes to population growth and other ecological processes. To date, however, most eco-evolutionary dynamics studies have not partitioned the relative contribution of plastic and evolutionary changes in traits on population, community and ecosystem processes...
June 24, 2017: Ecology
https://www.readbyqxmd.com/read/28645313/molecular-investigation-and-phylogeny-of-anaplasmataceae-species-infecting-domestic-animals-and-ticks-in-corsica-france
#8
Mustapha Dahmani, Bernard Davoust, Djamel Tahir, Didier Raoult, Florence Fenollar, Oleg Mediannikov
BACKGROUNDS: Corsica is a French island situated in the Mediterranean Sea. The island provides suitable natural conditions to study disease ecology, especially tick-borne diseases and emerging diseases in animals and ticks. The family Anaplasmataceae is a member of the order Rickettsiales; it includes the genera Anaplasma, Ehrlichia, Neorickettsia and Wolbachia. Anaplasmosis and ehrlichiosis traditionally refer to diseases caused by obligate intracellular bacteria of the genera Anaplasma and Ehrlichia...
June 23, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28645168/genomic-reconstruction-of-the-history-of-native-sheep-reveals-the-peopling-patterns-of-nomads-and-the-expansion-of-early-pastoralism-in-east-asia
#9
Yong-Xin Zhao, Ji Yang, Feng-Hua Lv, Xiao-Ju Hu, Xing-Long Xie, Min Zhang, Wen-Rong Li, Ming-Jun Liu, Yu-Tao Wang, Jin-Quan Li, Yong-Gang Liu, Yan-Ling Ren, Feng Wang, EEr Hehua, Juha Kantanen, Johannes Arjen Lenstra, Jian-Lin Han, Meng-Hua Li
China has a rich resource of native sheep (Ovis aries) breeds associated with historical movements of several nomadic societies. However, the history of sheep and the associated nomadic societies in ancient China remains poorly understood. Here, we studied the genomic diversity of Chinese sheep using genome-wide SNPs, mitochondrial and Y-chromosomal variations in more than 1,000 modern samples. Population genomic analyses combined with archaeological records and historical ethnic demographics data revealed genetic signatures of their origins, secondary expansions and admixtures, thereby revealing the peopling patterns of nomads and the expansion of early pastoralism in East Asia...
June 22, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28644839/genomic-introgression-mapping-of-field-derived-multiple-anthelmintic-resistance-in-teladorsagia-circumcincta
#10
Young-Jun Choi, Stewart A Bisset, Stephen R Doyle, Kymberlie Hallsworth-Pepin, John Martin, Warwick N Grant, Makedonka Mitreva
Preventive chemotherapy has long been practiced against nematode parasites of livestock, leading to widespread drug resistance, and is increasingly being adopted for eradication of human parasitic nematodes even though it is similarly likely to lead to drug resistance. Given that the genetic architecture of resistance is poorly understood for any nematode, we have analyzed multidrug resistant Teladorsagia circumcincta, a major parasite of sheep, as a model for analysis of resistance selection. We introgressed a field-derived multiresistant genotype into a partially inbred susceptible genetic background (through repeated backcrossing and drug selection) and performed genome-wide scans in the backcross progeny and drug-selected F2 populations to identify the major genes responsible for the multidrug resistance...
June 23, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28644779/cellular-light-scattering-for-the-identification-of-bacteria-and-its-application-to-the-identification-of-staphylococcus
#11
David L Haavig, Kaylagh R Hollen, Abbey E Debruin, Shelbi R Lisecki, Nicole C Shoup, Mickey J H Stimac, Anthony M Treloar, Zachary N Jodoin, Margaret S Bohm, Josh S Sharp
Rapid identification of bacteria is critical in clinical and food safety applications. This paper describes anovel instrument and data analysis method for identifying bacteria based on the measurement of laser light scattering as the beam interacts with bacterial cells suspended in water. A description of the technology is followed by an identification performance study for a set of strains from the genus Staphylococcus (the inclusive target organisms) and a set of non-Staphylococcus strains (the exclusive organisms)...
June 23, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28643535/efficacy-of-platelets-in-bone-healing-a-systematic-review-on-animal-studies
#12
Sabrina Marcazzan, Roberto Lodovico Weinstein, Massimo Del Fabbro
In presence of large bone defects, delayed bone union, non-union, fractures, and implant surgery, bone reconstruction may be necessary. Different strategies have been employed to enhance bone healing among which the use of autologous platelet concentrates. Due to the high content of platelets and platelet-derived bioactive molecules (e.g., growth factors, antimicrobial peptides), they are promising candidates to increase bone healing. However, a high heterogeneity of both preclinical and clinical studies resulted in contrasting results...
June 23, 2017: Platelets
https://www.readbyqxmd.com/read/28642977/molecular-characteristics-and-prevalence-of-small-ruminant-lentiviruses-in-goats-in-japan
#13
Saki Kokawa, Mami Oba, Teppei Hirata, Shiro Tamaki, Miki Omura, Shinobu Tsuchiaka, Makoto Nagai, Tsutomu Omatsu, Tetsuya Mizutani
Small ruminant lentiviruses (SRLVs), which comprise caprine arthritis-encephalitis virus (CAEV) and maedi-visna virus (MVV), are prevalent in goats and sheep worldwide, including in Japan. However, little is known about the molecular characteristics of goat lentiviruses in Japan. In this study, a molecular and phylogenetic analysis of the long gag region was performed. The phylogenic tree demonstrated that all samples belonged to SRLV subtype B1. Two clusters were identified, with one cluster distinct from previously reported strains of subtype B1...
June 22, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28642342/survival-of-contagious-ovine-digital-dermatitis-codd-associated-treponemes-on-disposable-gloves-after-handling-codd-affected-feet
#14
J W Angell, S R Clegg, D H Grove-White, R W Blowey, S D Carter, J S Duncan, N J Evans
Both contagious ovine digital dermatitis (CODD) and bovine digital dermatitis (BDD) are causes of infectious lameness in sheep and cattle, respectively, and are strongly associated with the presence of specific treponemes, with three different cultivable phylogroups commonly isolated: Treponema medium, Treponema phagedenis and Treponema pedis The aim of this study was to investigate the potential to transmit CODD-associated Treponema species via gloves used when handling visibly clinically affected animals...
June 22, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28642196/gdf5-significantly-augments-the-bone-formation-induced-by-an-injectable-plga-fiber-reinforced-brushite-forming-cement-in-a-sheep-defect-model-of-lumbar-osteopenia
#15
Matthias Bungartz, Elke Kunisch, Stefan Maenz, Victoria Horbert, Long Xin, Francesca Gunnella, Joerg Mika, Juliane Borowski, Sabine Bischoff, Harald Schubert, Andre Sachse, Bernhard Illerhaus, Jens Günster, Jörg Bossert, Klaus D Jandt, Frank Plöger, Raimund W Kinne, Olaf Brinkmann
BACKGROUND CONTEXT: Biodegradable calcium phosphate cement (CPC) represents a promising option for the surgical treatment of osteoporotic vertebral fractures. Due to augmented local bone catabolism, however, additional targeted delivery of bone morphogenetic proteins with the CPC may be needed to promote rapid and complete bone regeneration. PURPOSE: In the present study, an injectable, poly (l-lactide-co-glycolide) acid (PLGA)-fiber reinforced, brushite-forming cement (CPC) containing the bone morphogenetic protein GDF5 was tested in a sheep lumbar osteopenia model...
June 19, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28642016/electrospun-vascular-scaffold-for-cellularized-small-diameter-blood-vessels-a-preclinical-large-animal-study
#16
Young Min Ju, Hyunhee Ahn, Juan Arenas-Herrera, Cheil Kim, Mehran Abolbashari, Anthony Atala, James J Yoo, Sang Jin Lee
The strategy of vascular tissue engineering is to create a vascular substitute by combining autologous vascular cells with a tubular-shaped biodegradable scaffold. We have previously developed a novel electrospun bilayered vascular scaffold that provides proper biological and biomechanical properties as well as structural configuration. In this study, we investigated the clinical feasibility of a cellularized vascular scaffold in a preclinical large animal model. We fabricated the cellularized vascular construct with autologous endothelial progenitor cell (EPC)-derived endothelial cells (ECs) and smooth muscle cells (SMCs) followed by a pulsatile bioreactor preconditioning...
June 19, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28639600/effects-of-polysaccharide-fractions-isolated-from-caltha-palustris-l-on-the-activity-of-phagocytic-cells-humoral-immune-response-in-mice-with-collagen-induced-arthritis-a-comparison-with-methotrexate
#17
Agnieszka Suszko, Bożena Obmińska-Mrukowicz
BACKGROUND & OBJECTIVES: The extracts from Caltha palustris L. have been shown to be beneficial for treating arthritis and rheumatism. In this study, the immunomodulatory effects of polysaccharide fractions B and C of C. palustris extracts were studied, using the collagen-induced arthritis (CIA) mouse arthritis experimental model. The aim was to determine the activity of blood phagocytic cells and humoral immune response in CIA mice treated with polysaccharide fractions from C. palustris...
February 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28637873/disease-linked-mutations-in-factor-h-reveal-pivotal-role-of-cofactor-activity-in-self-surface-selective-regulation-of-complement-activation
#18
Heather Kerr, Edwin Wong, Elisavet Makou, Yi Yang, Kevin Marchbank, David Kavanagh, Anna Richards, Andrew P Herbert, Paul N Barlow
Spontaneous activation enables the complement system to respond very rapidly to diverse threats. Activation is efficiently suppressed by complement factor H (CFH) on self surfaces but not foreign surfaces. The surface selectivity of CFH, a soluble protein containing 20 CCP modules (CCPs 1-20), may be compromised by disease-linked mutations. Which of the several functions of CFH drives its self-surface selectivity remains unknown. We made human CFH mutants in Pichia pastoris. In benchmark studies of CCP-1 variants, recombinant I62-CFH (protective against age-related macular degeneration) and V62-CFH functioned equivalently, matching or outperforming plasma-derived CFH while R53H-CFH, linked to atypical haemolytic uraemic syndrome (aHUS), was defective in C3bBb decay-accelerating activity (DAA) and factor I-cofactor activity (CA)...
June 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28637199/first-ex-vivo-and-preliminary-sheep-model-results-of-the-new-tribio-aortic-valve-bioprosthesis-in-small-aortic-annuli
#19
Sina Stock, Hans-Hinrich Sievers, Doreen Richardt, Michael Scharfschwerdt
OBJECTIVES: : Small aortic annuli are challenging in aortic valve replacement. Prosthesis-patient mismatch, accompanied by high transvalvular gradients and small orifice area, is an often faced problem impairing postoperative outcome. The new TRIBIO bioprosthesis aims to enable enhanced haemodynamics, being increasingly important with decreasing annular size. This study compares ex vivo hydrodynamics of TRIBIO with 2 established bioprostheses in small annuli at different stroke volumes, simulating 'rest' and 'exercise', and evaluates haemodynamics of TRIBIO in a sheep model...
June 20, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28636835/use-of-bacteriophages-to-control-escherichia-coli-o157-h7-in-domestic-ruminants-meat-products-and-fruits-and-vegetables
#20
Lili Wang, Kunli Qu, Xiaoyu Li, Zhenhui Cao, Xitao Wang, Zhen Li, Yaxiong Song, Yongping Xu
Escherichia coli O157:H7 is an important foodborne pathogen that causes severe bloody diarrhea, hemorrhagic colitis, and hemolytic uremic syndrome. Ruminant manure is a primary source of E. coli O157:H7 contaminating the environment and food sources. Therefore, effective interventions targeted at reducing the prevalence of fecal excretion of E. coli O157:H7 by cattle and sheep and the elimination of E. coli O157:H7 contamination of meat products as well as fruits and vegetables are required. Bacteriophages offer the prospect of sustainable alternative approaches against bacterial pathogens with the flexibility of being applied therapeutically or for biological control purposes...
June 21, 2017: Foodborne Pathogens and Disease
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