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https://www.readbyqxmd.com/read/28929977/exposure-to-follicular-fluid-during-oocyte-maturation-and-oviductal-fluid-during-post-maturation-does-not-improve-in-vitro-embryo-production-in-the-horse
#1
Cécile Douet, Olivia Parodi, Nicola Antonio Martino, Giovanni Michele Lacalandra, Michele Nicassio, Fabrice Reigner, Stefan Deleuze, Maria Elena Dell'Aquila, Ghylène Goudet
Most wild equids and many domestic horse breeds are at risk of extinction, so there is an urgent need for genome resource banking. Embryos cryopreservation allows the preservation of genetics from male and female and is the fastest method to restore a breed. In the equine, embryo production in vitro would allow the production of several embryos per cycle. Intracytoplasmic sperm injection (ICSI) is used to generate horse embryos, but it requires expensive equipment and expertise in micromanipulation, and blastocyst development rates remain low...
September 20, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/28929497/genetic-diversity-and-paternal-origin-of-domestic-donkeys
#2
H Han, N Chen, J Jordana, C Li, T Sun, X Xia, X Zhao, C Ji, S Shen, J Yu, F Ainhoa, H Chen, C Lei, R Dang
Numerous studies have been conducted to investigate genetic diversity, origins and domestication of donkey using autosomal microsatellites and the mitochondrial genome, whereas the male-specific region of the Y chromosome of modern donkeys is largely uncharacterized. In the current study, 14 published equine Y chromosome-specific microsatellites (Y-STR) were investigated in 395 male donkey samples from China, Egypt, Spain and Peru using fluorescent labeled microsatellite markers. The results showed that seven Y-STRs-EcaYP9, EcaYM2, EcaYE2, EcaYE3, EcaYNO1, EcaYNO2 and EcaYNO4-were male specific and polymorphic, showing two to eight alleles in the donkeys studied...
September 19, 2017: Animal Genetics
https://www.readbyqxmd.com/read/28929022/development-and-evaluation-of-rapid-novel-isothermal-amplification-assays-for-important-veterinary-pathogens-chlamydia-psittaci-and-chlamydia-pecorum
#3
Martina Jelocnik, Md Mominul Islam, Danielle Madden, Cheryl Jenkins, James Branley, Scott Carver, Adam Polkinghorne
BACKGROUND: Chlamydia psittaci and Chlamydia pecorum are important veterinary pathogens, with the former also being responsible for zoonoses, and the latter adversely affecting koala populations in Australia and livestock globally. The rapid detection of these organisms is still challenging, particularly at the point-of-care (POC). In the present study, we developed and evaluated rapid, sensitive and robust C. psittaci-specific and C. pecorum-specific Loop Mediated Isothermal Amplification (LAMP) assays for detection of these pathogens...
2017: PeerJ
https://www.readbyqxmd.com/read/28888886/the-recombinant-ehv-1-vector-producing-cdv-hemagglutinin-as-potential-vaccine-against-canine-distemper
#4
Zihao Pan, Jin Liu, Jiale Ma, Qiuli Jin, Huochun Yao, Nikolaus Osterrieder
Canine distemper virus (CDV), is a pantropic agent of morbillivirus that causes fetal disease in dogs. Base on a broad host rang of CDV, the continued vaccines inoculation is unavoidable to pose gene recombination risk in vaccine virus and wild virus. The current study presents the construction of novel vectors, using equine herpesvirus type 1 (EHV-1) expressing the canine distemper virus (CDV). The recent field strain hemagglutinin protein and nucleoprotein were used for the construction of the viral vector vaccines...
September 6, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28884679/the-integration-of-a-macrophage-adapted-live-vaccine-strain-of-equine-infectious-anaemia-virus-eiav-in-the-horse-genome
#5
Qiang Liu, Xue-Feng Wang, Cheng Du, Yue-Zhi Lin, Jian Ma, Yu-Hong Wang, Jian-Hua Zhou, Xiaojun Wang
Integration is an important feature of retroviruses and retrovirus-based therapeutic transfection vectors. The non-primate lentivirus equine infectious anaemia virus (EIAV) primarily targets macrophages/monocytes in vivo. Investigation of the integration features of EIAVDLV121 strains, which are adapted to donkey monocyte-derived macrophages (MDMs), is of great interest. In this study, we analysed the integration features of EIAVDLV121 in equine MDMs during in vitro infection. Our previously published integration sites (IS) for EIAVFDDV13 in fetal equine dermal (FED) cells were also analysed in parallel as references...
September 7, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28846680/a-curated-catalog-of-canine-and-equine-keratin-genes
#6
Pierre Balmer, Anina Bauer, Shashikant Pujar, Kelly M McGarvey, Monika Welle, Arnaud Galichet, Eliane J Müller, Kim D Pruitt, Tosso Leeb, Vidhya Jagannathan
Keratins represent a large protein family with essential structural and functional roles in epithelial cells of skin, hair follicles, and other organs. During evolution the genes encoding keratins have undergone multiple rounds of duplication and humans have two clusters with a total of 55 functional keratin genes in their genomes. Due to the high similarity between different keratin paralogs and species-specific differences in gene content, the currently available keratin gene annotation in species with draft genome assemblies such as dog and horse is still imperfect...
2017: PloS One
https://www.readbyqxmd.com/read/28807043/an-equine-herpesvirus-type-1-ehv-1-vector-expressing-rift-valley-fever-virus-rvfv-gn-and-gc-induces-neutralizing-antibodies-in-sheep
#7
Abdelrahman Said, Mona Elmanzalawy, Guanggang Ma, Armando Mario Damiani, Nikolaus Osterrieder
Rift Valley fever virus (RVFV) is an arthropod-borne bunyavirus that can cause serious and fatal disease in humans and animals. RVFV is a negative-sense RNA virus of the Phlebovirus genus in the Bunyaviridae family. The main envelope RVFV glycoproteins, Gn and Gc, are encoded on the M segment of RVFV and known inducers of protective immunity. In an attempt to develop a safe and efficacious RVF vaccine, we constructed and tested a vectored equine herpesvirus type 1 (EHV-1) vaccine that expresses RVFV Gn and Gc...
August 14, 2017: Virology Journal
https://www.readbyqxmd.com/read/28803904/complete-mitochondrial-genomes-of-triodontophorus-serratus-and-triodontophorus-nipponicus-and-their-comparison-with-triodontophorus-brevicauda
#8
COMPARATIVE STUDY
Jun-Feng Gao, Guo-Hua Liu, Hong Duan, Yuan Gao, Yan Zhang, Qiao-Cheng Chang, Ming Fang, Chun-Ren Wang
Triodontophorus serratus and Triodontophorus nipponicus are two of the most common nematodes inhabiting in the large intestine of horse. In the present study, the complete mitochondrial (mt) genome sequences of T. serratus and T. nipponicus have been determined. The mt genomes of T. serratus and T. nipponicus are circular molecules with 13,794 bp and 13,701 bp in size, respectively. These circular mt genomes encode 36 genes, including 12 protein-coding genes, two rRNA genes and 22 tRNA genes. All of these genes are transcribed in the same direction and gene arrangements are consistent with that of gene arrangement 3 (GA3-type)...
October 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28771475/evolution-and-spread-of-venezuelan-equine-encephalitis-complex-alphavirus-in-the-americas
#9
Naomi L Forrester, Joel O Wertheim, Vivian G Dugan, Albert J Auguste, David Lin, A Paige Adams, Rubing Chen, Rodion Gorchakov, Grace Leal, Jose G Estrada-Franco, Jyotsna Pandya, Rebecca A Halpin, Kumar Hari, Ravi Jain, Timothy B Stockwell, Suman R Das, David E Wentworth, Martin D Smith, Sergei L Kosakovsky Pond, Scott C Weaver
Venezuelan equine encephalitis (VEE) complex alphaviruses are important re-emerging arboviruses that cause life-threatening disease in equids during epizootics as well as spillover human infections. We conducted a comprehensive analysis of VEE complex alphaviruses by sequencing the genomes of 94 strains and performing phylogenetic analyses of 130 isolates using complete open reading frames for the nonstructural and structural polyproteins. Our analyses confirmed purifying selection as a major mechanism influencing the evolution of these viruses as well as a confounding factor in molecular clock dating of ancestors...
August 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28757141/molecular-epidemiology-of-a-novel-re-assorted-epidemic-strain-of-equine-influenza-virus-in-pakistan-in-2015-16
#10
Amjad Khan, Muhammad Hassan Mushtaq, Mansur Ud Din Ahmad, Jawad Nazir, Shahid Hussain Farooqi, Asghar Khan
BACKGROUND: A widespread epidemic of equine influenza (EI) occurred in nonvaccinated equine population across multiple districts in Khyber Pakhtunkhwa Province of Pakistan during 2015-2016. OBJECTIVES AND METHODS: An epidemiological surveillance study was conducted from Oct 2015 to April 2016 to investigate the outbreak. EI virus strains were isolated in embryonated eggs from suspected equines swab samples and were subjected to genome sequencing using M13 tagged segment specific primers...
July 27, 2017: Virus Research
https://www.readbyqxmd.com/read/28757030/identification-and-genetic-characterization-of-equine-hepaciviruses-in-italy
#11
Gabriella Elia, Gianvito Lanave, Eleonora Lorusso, Antonio Parisi, Nicola Cavaliere, Giovanni Patruno, Calogero Terregino, Nicola Decaro, Vito Martella, Canio Buonavoglia
Viruses similar to human hepatitis C virus, hepaciviruses, have been identified in various animal species. Equine hepacivirus (EqHV) is the closest relative of human hepaciviruses. Although detected worldwide, information on EqHV epidemiology, genetic diversity and pathogenicity is still limited. In this study we investigated the prevalence and genetic diversity of EqHV in Italian equids. The RNA of EqHV was detected in 91/1932 sera (4.7%) whilst it was not detectable in 134 donkey sera screened by a TaqMan-based quantitative assay...
August 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28750625/developing-a-670k-genotyping-array-to-tag-2m-snps-across-24-horse-breeds
#12
Robert J Schaefer, Mikkel Schubert, Ernest Bailey, Danika L Bannasch, Eric Barrey, Gila Kahila Bar-Gal, Gottfried Brem, Samantha A Brooks, Ottmar Distl, Ruedi Fries, Carrie J Finno, Vinzenz Gerber, Bianca Haase, Vidhya Jagannathan, Ted Kalbfleisch, Tosso Leeb, Gabriella Lindgren, Maria Susana Lopes, Núria Mach, Artur da Câmara Machado, James N MacLeod, Annette McCoy, Julia Metzger, Cecilia Penedo, Sagi Polani, Stefan Rieder, Imke Tammen, Jens Tetens, Georg Thaller, Andrea Verini-Supplizi, Claire M Wade, Barbara Wallner, Ludovic Orlando, James R Mickelson, Molly E McCue
BACKGROUND: To date, genome-scale analyses in the domestic horse have been limited by suboptimal single nucleotide polymorphism (SNP) density and uneven genomic coverage of the current SNP genotyping arrays. The recent availability of whole genome sequences has created the opportunity to develop a next generation, high-density equine SNP array. RESULTS: Using whole genome sequence from 153 individuals representing 24 distinct breeds collated by the equine genomics community, we cataloged over 23 million de novo discovered genetic variants...
July 27, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28749324/investigation-of-the-fim1-putative-pilus-locus-of-streptococcus-equi-subspecies-equi
#13
Karen Frances Steward, Carl Robinson, Duncan J Maskell, Chiara Nenci, Andrew Stephen Waller
The Gram-positive bacterium Streptococcus equi subspecies equi (S. equi) is the causative agent of strangles, among the most frequently diagnosed infectious diseases of horses worldwide. Genome analysis of S. equi strain 4047 (Se4047) identified a putative operon, Fim1, with similarity to the pilus loci of other Gram-positive bacteria. The Fim1 locus was present in all strains of S. equi and its close relative S. equi subspecies zooepidemicus (S. zooepidemicus) that have been studied to date. In this study we provide evidence that the putative structural pilus proteins, SEQ_0936 and CNE, are produced on the cell surface during in vitro growth and in vivo infection...
July 28, 2017: Microbiology
https://www.readbyqxmd.com/read/28743673/genomic-landscape-of-copy-number-variation-and-copy-neutral-loss-of-heterozygosity-events-in-equine-sarcoids-reveals-increased-instability-of-the-sarcoid-genome
#14
Klaudia Pawlina-Tyszko, Artur Gurgul, Tomasz Szmatoła, Katarzyna Ropka-Molik, Ewelina Semik-Gurgul, Jolanta Klukowska-Rötzler, Christoph Koch, Kathrin Mählmann, Monika Bugno-Poniewierska
Although they are the most common neoplasms in equids, sarcoids are not fully characterized at the molecular level. Therefore, the objective of this study was to characterize the landscape of structural rearrangements, such as copy number variation (CNV) and copy neutral loss of heterozygosity (cnLOH), in the genomes of sarcoid tumor cells. This information will not only broaden our understanding of the characteristics of this genome but will also improve the general knowledge of this tumor and the mechanisms involved in its generation...
September 2017: Biochimie
https://www.readbyqxmd.com/read/28737212/a-genome-wide-association-study-for-equine-recurrent-airway-obstruction-in-european-warmblood-horses-reveals-a-suggestive-new-quantitative-trait-locus-on-chromosome-13
#15
D Schnider, S Rieder, T Leeb, V Gerber, M Neuditschko
Recurrent airway obstruction (RAO), also known as heaves, is an asthma-like respiratory disease. Its development is strongly influenced by environmental risk factors such as sensitization and exposure to moldy hay, straw bedding and stabling indoors. A hereditary component has been documented in previous studies; however, so far no causative genetic variant that influences the risk of developing RAO has been identified. In this study, we revised an existing dataset and selected 384 horses for genotyping on the Affymetrix high-density equine SNP array...
July 24, 2017: Animal Genetics
https://www.readbyqxmd.com/read/28720295/equine-papillomavirus-type-2-an-equine-equivalent-to-human-papillomavirus-16
#16
S Sykora, C Jindra, M Hofer, R Steinborn, S Brandt
In horses, squamous cell carcinomas (SCC) commonly affect the external genitals. There is growing evidence that equine papillomavirus type 2 (EcPV2) infection promotes disease development. To assess the possible association of EcPV2 with equine SCCs of the head (HSCC), 15 HSCC DNA samples were screened by E6/E7, E2, and LCR PCR and amplicons were analysed for sequence variations. The physical form of EcPV2 in HSCC, genital lesions, and smegma from horses with SCC was then addressed using EcPV2 immunocapture PCR (IC/PCR) for detection of virion, and E6 vs...
July 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28702049/endurance-exercise-ability-in-the-horse-a-trait-with-complex-polygenic-determinism
#17
Anne Ricard, Céline Robert, Christine Blouin, Fanny Baste, Gwendoline Torquet, Caroline Morgenthaler, Julie Rivière, Nuria Mach, Xavier Mata, Laurent Schibler, Eric Barrey
Endurance horses are able to run at more than 20 km/h for 160 km (in bouts of 30-40 km). This level of performance is based on intense aerobic metabolism, effective body heat dissipation and the ability to endure painful exercise. The known heritabilities of endurance performance and exercise-related physiological traits in Arabian horses suggest that adaptation to extreme endurance exercise is influenced by genetic factors. The objective of the present genome-wide association study (GWAS) was to identify single nucleotide polymorphisms (SNPs) related to endurance racing performance in 597 Arabian horses...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28679463/expanded-equine-cumulus-oocyte-complexes-exhibit-higher-meiotic-competence-and-lower-glucose-consumption-than-compact-cumulus-oocyte-complexes
#18
L González-Fernández, M J Sánchez-Calabuig, M G Alves, P F Oliveira, S Macedo, A Gutiérrez-Adán, A Rocha, B Macías-García
Equine cumulus-oocyte complexes (COCs) are classified as compact (cCOC) or expanded (eCOC) and vary in their meiotic competence. This difference could be related to divergent glucose metabolism. To test this hypothesis in the present study, eCOCs, cCOCs and expanded or compact mural granulosa cells (EC and CC respectively) were matured in vitro for 30h, at which time maturation rate, glucose metabolism and the expression of genes involved in glucose transport, glycolysis, apoptosis and meiotic competence were determined...
July 6, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28676104/identification-of-long-non-coding-rna-in-the-horse-transcriptome
#19
E Y Scott, T Mansour, R R Bellone, C T Brown, M J Mienaltowski, M C Penedo, P J Ross, S J Valberg, J D Murray, C J Finno
BACKGROUND: Efforts to resolve the transcribed sequences in the equine genome have focused on protein-coding RNA. The transcription of the intergenic regions, although detected via total RNA sequencing (RNA-seq), has yet to be characterized in the horse. The most recent equine transcriptome based on RNA-seq from several tissues was a prime opportunity to obtain a concurrent long non-coding RNA (lncRNA) database. RESULTS: This lncRNA database has a breadth of eight tissues and a depth of over 20 million reads for select tissues, providing the deepest and most expansive equine lncRNA database...
July 4, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28591825/corticotrophin-releasing-hormone-and-corticosterone-impair-development-of-preimplantation-embryos-by-inducing-oviductal-cell-apoptosis-via-activating-the-fas-system-an-in-vitro-study
#20
Xiu-Wen Tan, Chang-Li Ji, Liang-Liang Zheng, Jie Zhang, Hong-Jie Yuan, Shuai Gong, Jiang Zhu, Jing-He Tan
STUDY QUESTION: What are the mechanisms by which corticotrophin-releasing hormone (CRH) and corticosterone impair the development of preimplantation embryos in the oviduct. SUMMARY ANSWER: CRH and corticosterone do not affect preimplantation embryos directly, but impair their development indirectly by triggering apoptosis of oviductal epithelial cells (OECs) through activation of the Fas system. WHAT IS KNOWN ALREADY: Studies report that stress impairs embryo development with facilitated secretion of CRH and glucocorticoids...
August 1, 2017: Human Reproduction
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