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https://www.readbyqxmd.com/read/28550526/fetoscopic-patch-coverage-of-experimental-myelomenigocele-using-a-two-port-access-in-fetal-sheep
#1
Lucie Guilbaud, Nathalie Roux, Stéphanie Friszer, Charles Garabedian, Ferdinand Dhombres, Bettina Bessières, Catherine Fallet-Bianco, Federico Di Rocco, Michel Zerah, Jean-Marie Jouannic
PURPOSE: This study aims to assess the feasibility and the effectiveness of a fetoscopic myelomeningocele (MMC) coverage using a sealed inert patch through a two-port access, in the sheep model. METHODS: Forty-four fetuses underwent surgical creation of a MMC defect at day 75 and were divided into four groups according to the MMC repair technique, performed at day 90. Group 1 remained untreated. Group 2 had an open surgery using suture of the defect. Groups 3 and 4 underwent defect coverage using a Gore®-polytetrafluoroethylene patch secured with surgical adhesive (Bioglue®), with an open approach (group 3) and a fetoscopic one (group 4)...
May 26, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28550175/chronic-hypoxia-attenuates-the-vasodilator-efficacy-of-protein-kinase-g-in-fetal-and-adult-ovine-cerebral-arteries
#2
Richard B Thorpe, Margaret C Hubbell, Jinjutha Silpanisong, James M Williams, William J Pearce
Long-term hypoxia (LTH) attenuates nitric oxide (NO) induced vasorelaxation in ovine middle cerebral arteries. Because cGMP-dependent protein kinase (PKG) is an important mediator of NO signaling in vascular smooth muscle, we tested the hypothesis that LTH diminishes the ability of PKG to interact with target proteins and cause vasorelaxation. Prominent among proteins that regulate vascular tone is the large conductance calcium-sensitive potassium (BK) channel, which is a substrate for PKG and is responsive to phosphorylation on multiple serine/threonine residues...
May 26, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28549462/development-of-a-snp-panel-dedicated-to-parentage-assignment-in-french-sheep-populations
#3
F Tortereau, C R Moreno, G Tosser-Klopp, B Servin, J Raoul
BACKGROUND: The efficiency of breeding programs partly relies on the accuracy of the estimated breeding values which decreases when pedigrees are incomplete. Two reproduction techniques are mainly used by sheep breeders to identify the sires of lambs: animal insemination and natural matings with a single ram per group of ewes. Both methods have major drawbacks, notably time-consuming tasks for breeders, and are thus used at varying levels in breeding programs. As a consequence, the percentage of known sires can be very low in some breeds and results in less accurate estimated breeding values...
May 26, 2017: BMC Genetics
https://www.readbyqxmd.com/read/28549435/molecular-characterization-of-hemotropic-mycoplasmas-mycoplasma-ovis-and-candidatus-mycoplasma-haemovis-in-sheep-and-goats-in-china
#4
Xiaoxing Wang, Yanyan Cui, Yan Zhang, Ke Shi, Yaqun Yan, Fuchun Jian, Longxian Zhang, Rongjun Wang, Changshen Ning
BACKGROUND: Hemotropic mycoplasmas (hemoplasmas) are emerging zoonotic pathogens with a worldwide distribution that can cause mild to severe hemolytic anemia, icterus, ill-thrift, infertility, and poor weight gain. However, understanding of the molecular epidemiology of hemoplasmas (Mycoplasma ovis and 'Candidatus Mycoplasma haemovis') is limited in sheep and goats, and the hemoplasma strain/species/variant 'Candidatus M. haemovis' was poorly studied throughout the world and had never been detected in China until now...
May 26, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28545161/classic-galactosemia-study-on-the-late-prenatal-development-of-galt-specific-activity-in-a-sheep-model
#5
Ana I Coelho, Jörgen Bierau, Martijn Lindhout, Jelle Achten, Boris W Kramer, M Estela Rubio-Gozalbo
BACKGROUND: Classic galactosemia results from deficient activity of galactose-1-phosphate uridylyltransferase (GALT), a key enzyme of galactose metabolism. Despite early diagnosis and early postnatal therapeutic intervention, patients still develop neurologic and fertility impairments. Prenatal developmental toxicity has been hypothesized as a determinant factor of disease. In order to shed light on the importance of prenatal GALT activity, several studies have examined GALT activity throughout development...
May 25, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28543827/estimations-of-linkage-disequilibrium-effective-population-size-and-roh-based-inbreeding-coefficients-in-spanish-churra-sheep-using-imputed-high-density-snp-genotypes
#6
P K Chitneedi, J J Arranz, A Suarez-Vega, E García-Gámez, B Gutiérrez-Gil
In this study, the availability of the Ovine HD SNP BeadChip (HD-chip) and the development of an imputation strategy provided an opportunity to further investigate the extent of linkage disequilibrium (LD) at short distances in the genome of the Spanish Churra dairy sheep breed. A population of 1686 animals, including 16 rams and their half-sib daughters, previously genotyped for the 50K-chip, was imputed to the HD-chip density based on a reference population of 335 individuals. After assessing the imputation accuracy for beagle v4...
May 22, 2017: Animal Genetics
https://www.readbyqxmd.com/read/28543653/ripples-what-to-expect-when-you-serve-on-a-bioethics-commission
#7
Thomas H Murray
Cloning was the issue that put the National Bioethics Advisory Commission on the map, but the first clue that NBAC would address cloning was a terse fax from the White House to each of us who served on the Commission. The fax noted that with the birth of the sheep named Dolly, mammalian cloning was now a reality, and it tasked NBAC with providing advice on the ethics of human cloning and how the nation should respond to it. We were given ninety days to report our findings. That's a very tight deadline for a report written by a committee, but we met it, and along the way, I learned important lessons...
May 2017: Hastings Center Report
https://www.readbyqxmd.com/read/28543277/experimental-study-of-cryofreezing-energy-applications-on-the-ventricular-myocardium-using-sheep-hearts
#8
Kaoru Okishige, Peter L Friedman
BACKGROUND: Cryofreezing energy has been utilized to abolish arrhythmogenic substrates of various kinds of tachyarrhythmias. However, systematic electrophysiological and histological investigations of cryothermia have never been performed. The aim of this study was to clarify those aspects using sheep beating hearts. METHODS: A total of eight adult sheep were utilized under total anesthesia, and a pericardial cradle was made by opening the pericardium. Eight epicardial plaque electrodes were sutured on the epicardial surface of the left ventricle 2∼3 cm apart from each other...
May 23, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28542897/osteoarthritis-in-two-marine-mammals-and-22-land-mammals-learning-from-skeletal-remains
#9
Korakot Nganvongpanit, Ratsadakorn Soponteerakul, Piyatida Kaewkumpai, Veerasak Punyapornwithaya, Kittisak Buddhachat, Raksiri Nomsiri, Patcharaporn Kaewmong, Kongkiat Kittiwatanawong, Rachanchai Chawangwongsanukun, Taweepoke Angkawanish, Chatchote Thitaram, Pasuk Mahakkanukrauh
The occurrence of osteoarthritis (OA) in marine mammals is still questionable. Here we investigated the prevalence of OA in marine (dolphin and dugong) and terrestrial mammals (Asian elephant, Asiatic buffalo, camel, cat, cattle, deer, dog, domestic goat, horse, human, hyena, impala, lion, Malayan tapir, Assam macaque, mule, pig, rabbit, red kangaroo, sheep, tiger and waterbuck). Skeletal remains obtained from five institutes were used as subjects; a total of 45 different parts (locations) of bones were observed for OA lesions...
May 23, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28539940/horizontal-and-vertical-distribution-of-heavy-metals-in-farm-produce-and-livestock-around-lead-contaminated-goldmine-in-dareta-and-abare-zamfara-state-northern-nigeria
#10
O E Orisakwe, O O Oladipo, G C Ajaezi, N A Udowelle
Background. Hitherto studies in response to the June 2010 lead poisoning, Zamfara State, Nigeria, have focused on clinical interventions without information on livestock and other metals. Objective. This study has investigated the distribution of heavy metals in farm produce and livestock around lead-contaminated goldmine in Dareta and Abare, Zamfara State, Nigeria. Methods. Vegetables, soil, water, blood, and different meat samples were harvested from goat, sheep, cattle, and chicken from Dareta, Abare, and Gusau communities...
2017: Journal of Environmental and Public Health
https://www.readbyqxmd.com/read/28539210/design-and-testing-of-a-controlled-electromagnetic-spinal-cord-impactor-for-use-in-large-animal-models-of-acute-traumatic-spinal-cord-injury
#11
Rory J Petteys, Steven M Spitz, Hasan Syed, R Andrew Rice, Rachel Sarabia-Estrada, C Rory Goodwin, Daniel M Sciubba, Brett A Freedman
BACKGROUND: Spinal cord injury (SCI) causes debilitating neurological dysfunction and has been observed in warfighters injured in IED blasts. Clinical benefit of SCI treatment remains elusive and better large animal models are needed to assess treatment options. Here, we describe a controlled electromagnetic spinal cord impactor for use in large animal models of SCI. METHODS: A custom spinal cord impactor and platform were fabricated for large animals (e.g., pig, sheep, dog, etc...
May 20, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28539095/effectiveness-of-non-fluoride-and-fluoride-dentifrices-for-denture-hygiene
#12
Gökçe Meriç, Meryem Güvenir, Kaya Suer
OBJECTIVE: To compare the effectiveness of commonly used herbal/non-fluoride with fluoride dentifrices in order to eliminate pathogenic oral microorganisms from denture base material. MATERIALS AND METHODS: Heat-polymerized acrylic resin specimens (n = 288) were divided into three groups and each group inoculated with three various microorganisms (n = 96 for each) Candida albicans, Staphylococcus aureus and Pseudomonas aeruginosa (P. aeruginosa). Contaminated specimens were randomly assigned to the application of six herbal/non-fluoride and three fluoride dentifrices...
May 24, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28537612/proline-rich-antimicrobial-peptides-targeting-protein-synthesis
#13
Michael Graf, Mario Mardirossian, Fabian Nguyen, A Carolin Seefeldt, Gilles Guichard, Marco Scocchi, C Axel Innis, Daniel N Wilson
Covering: up to 2017The innate immune system employs a broad array of antimicrobial peptides (AMPs) to attack invading microorganisms. While most AMPs act by permeabilizing the bacterial membrane, specific subclasses of AMPs have been identified that pass through membranes and inhibit bacterial growth by targeting fundamental intracellular processes. One such subclass is the proline-rich antimicrobial peptides (PrAMPs) that bind to the ribosome and interfere with the process of protein synthesis. A diverse range of PrAMPs have been identified in insects, such as bees, wasps and beetles, and crustaceans, such as crabs, as well as in mammals, such as cows, sheep, goats and pigs...
May 24, 2017: Natural Product Reports
https://www.readbyqxmd.com/read/28536637/ppar%C3%AE-agonist-through-the-terminal-differentiation-phase-is-essential-for-adipogenic-differentiation-of-fetal-ovine-preadipocytes
#14
Yong Pu, Almudena Veiga-Lopez
BACKGROUND: Although the 3T3-L1 preadipocyte cell line represents an informative model for in vitro adipogenesis research, primary cultured cells are often needed to understand particular human or animal metabolic phenotypes. As demonstrated by in vitro cultured preadipocytes from large mammalian species, primary cultured cells require specific adipogenic differentiation conditions different to that of the 3T3-L1 cell line. These conditions are also species-specific and require optimization steps...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28535749/analysis-of-change-in-gait-in-the-ovine-stifle-normal-injured-and-anterior-cruciate-ligament-reconstructed
#15
B J Heard, J E Beveridge, M Atarod, E J O'Brien, C Rolian, C B Frank, D A Hart, N G Shrive
BACKGROUND: Many patients who undergo anterior cruciate ligament (ACL) reconstructive surgery develop post-traumatic osteoarthritis (PTOA). ACL reconstructive surgery may not fully restore pre-injury joint biomechanics, thereby resulting in further joint damage and contributing to the development of PTOA. In an ovine model of idealized ACL reconstruction (ACL-R), it has been shown that signs of PTOA develop within surgical joints by 20 weeks post-surgery. The aim of the present study was to investigate whether altered kinematics contribute to early PTOA development within ACL-R joints of the ovine injury model by comparing the gait of these surgical animals to the gait of a stable normal control group, and an unstable injury group in which the ACL and medial collateral ligament (MCL) had been transected...
May 23, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28534030/combining-slaughterhouse-surveillance-data-with-cattle-tracing-scheme-and-environmental-data-to-quantify-environmental-risk-factors-for-liver-fluke-in-cattle
#16
Giles T Innocent, Lucy Gilbert, Edward O Jones, James E McLeod, George Gunn, Iain J McKendrick, Steve D Albon
Liver fluke infection causes serious disease (fasciolosis) in cattle and sheep in many regions of the world, resulting in production losses and additional economic consequences due to condemnation of the liver at slaughter. Liver fluke depends on mud snails as an intermediate host and infect livestock when ingested through grazing. Therefore, environmental factors play important roles in infection risk and climate change is likely to modify this. Here, we demonstrate how slaughterhouse data can be integrated with other data, including animal movement and climate variables to identify environmental risk factors for liver fluke in cattle in Scotland...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28533031/enantioseparation-and-optical-rotation-of-flavor-relevant-4-alkyl-branched-fatty-acids
#17
Dorothee Eibler, Walter Vetter
Short chain 4-alkyl-branched fatty acids are character impact compounds of the flavor of sheep and goat milk and meat. Due to their methyl or ethyl branches these volatile fatty acids are chiral, and both enantiomers are characterized by different aroma intensities. Recently, it was found that 4-methyloctanoic acid (4-Me-8:0), 4-ethyloctanoic acid (4-Et-8:0), and 4-methylnonanoic acid (4-Me-9:0) are enantiopure in goat and sheep samples, if present. Here we generated enantiopure or enantioenriched standards from racemates by means of (R)-selective esterification with lipase B and verified that 4-Me-8:0, 4-Et-8:0 and 4-Me-9:0 were (R)-enantiopure in these tissues...
May 8, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28532842/effects-of-diet-and-arginine-treatment-during-the-luteal-phase-on-ovarian-no-pgc-1%C3%AE-signaling-in-ewes
#18
Yi-Xuan Guo, Hai-Tao Nie, Ling-Wei Sun, Guo-Min Zhang, Kai-Ping Deng, Yi-Xuan Fan, Feng Wang
The aim of this study was to determine whether arginine (Arg) supplementation of malnourished ewes affects the expression of key NO/PGC-1α signaling pathway genes in the ovary. On Day 6-15 of the estrous cycle, 24 multiparous Hu sheep (BW = 43.56 ± 1.53 kg) were randomly assigned to three groups: control group (CG; n = 6), restriction group (RG; n = 9) and l-arginine group (AG; n = 9), and administered Arg treatment (or vehicle) three times per day. The ewes were slaughtered at the end of treatment, and blood samples and ovaries were collected for analysis...
July 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28532825/growth-performance-reproductive-traits-and-offspring-survivability-of-genetically-modified-rams-overexpressing-toll-like-receptor-4
#19
Yu-Chang Yao, Hong-Bing Han, Xu-Ting Song, Shou-Long Deng, Yu-Feng Liu, Ming-Hai Lu, Yun-Hai Zhang, Mei-Yu Qi, Hai-Juan He, Su-Mei Wang, Guo-Shi Liu, Wu Li, Zheng-Xing Lian
Genetic modification provides a means to enhancing disease resistance in animals. Toll-like receptor 4 (TLR4), a member of the TLR family, is critical for the recognition of lipopolysaccharide (LPS)/endotoxin from Gram-negative bacteria by host immune cells, which initiates cell activation and subsequently triggers a proinflammatory response to the invading pathogens. In this study, the first generation of genetically modified (GM) sheep overexpressing TLR4 was produced by microinjection for better disease resistance...
July 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28532799/characterization-of-pasteurella-multocida-associated-with-ovine-pneumonia-using-multi-locus-sequence-typing-mlst-and-virulence-associated-gene-profile-analysis-and-comparison-with-porcine-isolates
#20
Andrés García-Alvarez, Ana Isabel Vela, Elvira San Martín, Fernando Chaves, José Francisco Fernández-Garayzábal, Domínguez Lucas, Dolores Cid
Pasteurella multocida is a pathogen causing disease in a wide range of hosts including sheep and pigs. Isolates from ovine pneumonia were characterized by MLST (Multi-host and RIRDC databases) and virulence-associated gene (VAG) typing and compared with porcine isolates. Ovine and porcine isolates did not share any STs as determined by both schemes and exhibited different VAG profiles. With the Multi-host database, sixteen STs were identified among 43 sheep isolates with two STs (ST50 and ST19) comprising 53...
May 2017: Veterinary Microbiology
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