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https://www.readbyqxmd.com/read/29346527/progesterone-effects-on-extracellular-vesicles-in-the-sheep-uterus
#1
Gregory W Burns, Kelsey E Brooks, Eleanore V O'Neil, Darren E Hagen, Susanta K Behura, Thomas E Spencer
Progesterone (P4) acts via the endometrium to promote conceptus growth and implantation for pregnancy establishment. Many cells release extracellular vesicles (EVs) that are membrane-bound vesicles of endosomal and plasma membrane origin. In sheep, endometrial-derived EVs were found to traffic to the conceptus trophectoderm. Thus, EVs are hypothesized to be an important mode of intercellular communication by transferring select RNAs, proteins, and lipids between the endometrium and conceptus. Electron microscopy analysis found that the endometrial luminal and glandular epithelia were the primary source of EVs in the uterus of cyclic sheep...
January 16, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29346125/the-unknown-mechanism-of-exogenous-tetrahydrobiopterin-in-the-renal-protection-of-sheep-ischemia-and-reperfusion
#2
Hiroyuki Kinoshita, Kazunobu Otake, Takashi Yamasaki
No abstract text is available yet for this article.
January 17, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29345324/autocrine-signals-increase-ovine-mesenchymal-stem-cells-migration-through-aquaporin-1-and-cxcr4-overexpression
#3
Alessandra Pelagalli, Anna Nardelli, Enrico Lucarelli, Antonella Zannetti, Arturo Brunetti
Sheep is a relevant large animal model that is frequently used to test innovative tissue engineering (TE) approaches especially for bone reconstruction. Mesenchymal stem cells (MSCs) are used in TE applications because they represent key component of adult tissue repair. Importantly, MSCs from different species show similar characteristics, which facilitated their application in translational studies using animal models. Nowadays, many researches are focusing on the use of ovine mesenchymal stem cells (oMSCs) in orthopedic preclinical settings for regenerative medicine purposes...
January 18, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29345314/the-prevalence-and-distribution-of-sheep-scab-in-wales-a-farmer-questionnaire-survey
#4
C-A Chivers, H Rose Vineer, R Wall
Outbreaks of ovine psoroptic mange in the U.K. have increased 100-fold since its deregulation in 1992, with the highest prevalence in Wales, a region of high sheep density. A cross-sectional, retrospective, questionnaire-based survey of 7500 members of the association of Welsh lamb and beef farmers [Welsh Lamb and Beef Producers Ltd (WLBP)] was used to investigate the prevalence and distribution of sheep scab in this region in 2015. The survey was completed by 14.0% (n = 972) of potential respondents. Scab outbreaks were reported on 15...
January 18, 2018: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/29344801/toxoplasma-gondii-in-sympatric-domestic-and-wild-ungulates-in-the-mediterranean-ecosystem
#5
S Almería, O Cabezón, J Paniagua, D Cano-Terriza, S Jiménez-Ruiz, A Arenas-Montes, J P Dubey, I García-Bocanegra
Toxoplasma gondii is a zoonotic protozoan of worldwide distribution. The present study provides information on risk factors affecting T. gondii infection in domestic and free-ranging wild ungulates sharing habitats in Mediterranean ecosystems in Spain. Serum samples from 482 extensively reared domestic ruminants and 2351 wild ungulates were tested for T. gondii antibodies using the modified agglutination test (MAT, cut-off 1:25). Toxoplasma gondii seroprevalence was 41.2% of 194 sheep, 18.6% of 199 cattle and 5...
January 17, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29343313/eucalyptus-leaves-powder-antibiotic-and-probiotic-addition-to-broiler-diets-effect-on-growth-performance-immune-response-blood-components-and-carcass-traits
#6
H Mashayekhi, M Mazhari, O Esmaeilipour
The study was conducted to investigate the effects of different levels of eucalyptus powder (EP), virginiamycin and probiotic on performance, immunity, blood components and carcass traits of broiler chickens. A total of 250, 1-day-old male broiler chickens (Ross 308) were randomly allocated to five treatments with five replicates and 10 chicks each, as a completely randomized design. The dietary treatments consisted of: basal diet (BD), BD+0.25% EP, BD+0.5% EP, BD+0.01% of diet probiotic (Protexin), BD+0.02% of diet antibiotic (virginiamycin)...
January 18, 2018: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29343275/early-babesia-canis-transmission-in-dogs-within-24%C3%A2-h-and-8%C3%A2-h-of-infestation-with-infected-pre-activated-male-dermacentor-reticulatus-ticks
#7
Marie Varloud, Julian Liebenberg, Josephus Fourie
BACKGROUND: This study was designed to assess the ability of fed male Dermacentor reticulatus ticks to transmit Babesia canis to dogs after being detached from previous canine or ovine hosts. METHODS: The study was an exploratory, parallel group design conducted in two trials. All the animals were sero-negative for babesiosis prior to enrolment. In a first trial, donor dogs and donor sheep were infested with Babesia canis infected male and uninfected female ticks for 72 h...
January 17, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29343270/isolation-and-characterization-of-olfactory-ecto-mesenchymal-stem-cells-from-eight-mammalian-genera
#8
Antoine D Veron, Cécile Bienboire-Frosini, François Feron, Elisa Codecasa, Arnaud Deveze, Dany Royer, Paul Watelet, Pietro Asproni, Kevin Sadelli, Camille Chabaud, Jean-Claude Stamegna, Joël Fagot, Michel Khrestchatisky, Alessandro Cozzi, François S Roman, Patrick Pageat, Manuel Mengoli, Stéphane D Girard
BACKGROUND: Stem cell-based therapies are an attractive option to promote regeneration and repair defective tissues and organs. Thanks to their multipotency, high proliferation rate and the lack of major ethical limitations, "olfactory ecto-mesenchymal stem cells" (OE-MSCs) have been described as a promising candidate to treat a variety of damaged tissues. Easily accessible in the nasal cavity of most mammals, these cells are highly suitable for autologous cell-based therapies and do not face issues associated with other stem cells...
January 17, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29338721/infectious-keratoconjunctivitis-in-semi-domesticated-eurasian-tundra-reindeer-rangifer-tarandus-tarandus-microbiological-study-of-clinically-affected-and-unaffected-animals-with-special-reference-to-cervid-herpesvirus-2
#9
Javier Sánchez Romano, Torill Mørk, Sauli Laaksonen, Erik Ågren, Ingebjørg H Nymo, Marianne Sunde, Morten Tryland
BACKGROUND: Infectious keratoconjunctivitis (IKC) is one of the most common ocular diseases in ruminants worldwide. In addition to keratitis and conjunctivitis, animals with IKC can develop uveitis, corneal ulcer, and in severe cases, blindness. The bacteria Moraxella spp. has been described as the primary causative agent of infectious bovine keratoconjunctivitis (IBK) in cattle (Bos taurus), while Chlamydia spp. and Mycoplasma conjunctivae are considered the main causative agents of IKC in sheep (Ovis aries)...
January 16, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29337673/evaluation-of-immunomodulatory-effects-of-lamotrigine-in-balb-c-mice
#10
Eman Y Abu-Rish, Shada Y Elhayek, Yehia S Mohamed, Islam Hamad, Yasser Bustanji
Modulation of the immune system has recently been shown to be involved in the pharmacological effects of old antiepileptic drugs and in the pathogenesis of epilepsy. Therefore, the most recent guidelines for immunotoxicological evaluation of drugs were consulted to investigate the immunomodulatory effects of lamotrigine, a newer antiepileptic drug, in BALB/c mice. These included the in vivo effects of lamotrigine on delayed-type hypersensitivity (DTH) response to sheep red blood cell (SRBC) antigens, hemagglutination titer assays and hematological changes...
December 20, 2017: Acta Pharmaceutica
https://www.readbyqxmd.com/read/29336863/age-associated-expression-of-vitamin-d-receptor-and-vitamin-d-metabolizing-enzymes-in-the-male-reproductive-tract-and-sperm-of-hu-sheep
#11
Xiaolei Yao, M A Ei-Samahy, Hua Yang, Xu Feng, Fengzhe Li, Fanxing Meng, Haitao Nie, Feng Wang
The cellular response to 1,25-dihydroxyvitamin D3 (Vit D3; biologically active form of Vitamin D) is complex and depends not only on Vitamin D receptor (VDR) expression but also on cellular uptake of circulating Vit D3 and the presence and activity of Vitamin D-metabolizing enzyme. This study evaluated the expression of VDR and Vitamin D-metabolizing enzymes in the ram reproductive tract at different developmental stages and in spermatozoa. Nearly all cell types in the testes and epithelial cells of the caput, corpus, and cauda expressed VDR, CYP27B1, and CYP24A1 proteins...
January 10, 2018: Animal Reproduction Science
https://www.readbyqxmd.com/read/29336476/drivers-and-demographic-consequences-of-seasonal-mass-changes-in-an-alpine-ungulate
#12
Mathieu Douhard, Simon Guillemette, Marco Festa-Bianchet, Fanie Pelletier
We know little about the determinants and demographic consequences of the marked seasonal mass changes exhibited by many northern and alpine mammals. We analysed 43 years of data on individual winter mass loss (the difference between mass in early June and mass in mid-September the previous year) and summer mass gain (the difference between mass in mid-September and in early June of the same year) in adult bighorn sheep (Ovis canadensis). We calculated relative seasonal mass change as a proportion of individual body mass at the start of each season...
January 16, 2018: Ecology
https://www.readbyqxmd.com/read/29335029/estimating-the-proportion-of-clinically-diagnosed-infectious-and-non-infectious-animal-diseases-in-ganta-afeshum-woreda-eastern-tigray-zone-ethiopia
#13
Mebrahtu Tedla, Mebrahtu Gebreselassie
OBJECTIVE: This study was performed with the objective of identifying the proportion of emerging and endemic livestock diseases using cross sectional survey. RESULT: A total of 285 clinically diseased animals were presented to a veterinary clinic and diagnosed tentatively based on history, clinical sign, and simple laboratory diagnostics and from the study, actinomycosis (15.83%), mastitis (15%), tick infestation (10%), respiratory diseases (9.16%) and gastro intestinal parasitism (9...
January 15, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29334949/flaxseed-enriched-diets-change-milk-concentration-of-the-antimicrobial-danofloxacin-in-sheep
#14
Jon Andoni Otero, Dafne García-Mateos, Indira Alvarez-Fernández, Rocío García-Villalba, Juan Carlos Espín, Ana Isabel Álvarez, Gracia Merino
BACKGROUND: Flaxseed is the most common and rich dietary source of lignans and is an acceptable supply of energy for livestock. Flaxseed lignans are precursors of enterolignans, mainly enterolactone and enterodiol, produced by the rumen and intestinal microbiota of mammals and have many important biological properties as phytoestrogens. Potential food-drug interactions involving flaxseed may be relevant for veterinary therapy, and for the quality and safety of milk and dairy products...
January 15, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29334948/molecular-identification-and-investigations-of-contagious-ecthyma-orf-virus-in-small-ruminants-north-west-ethiopia
#15
Mebrahtu Tedla, Nega Berhan, Wassie Molla, Wudu Temesgen, Sefinew Alemu
BACKGROUND: Orf virus, the prototype of parapoxvirus, is the main causative agent of contagious ecthyma. Little is known about the status of the disease in Ethiopia and this study was aimed at determining its status using PCR as a confirmatory tool. METHODS: a total of 400 randomly selected sheep and goat was screened for the identification of the virus using amplification of B2L gene and transfection of mammalian cells (VERO cells). RESULTS: Out of 400 animals screened for infection of the virus, 48 animals were found positive to PCR and revealed an overall incidence of 12%...
January 15, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29334207/screening-for-causative-mutations-of-major-prolificacy-genes-in-iranian-fat-tailed-sheep
#16
Ramin Abdoli, Seyed Ziaeddin Mirhoseini, Navid Ghavi Hossein-Zadeh, Pouya Zamani
Background: The presence of different missense mutations in sheep breeds have shown that the bone morphogenetic protein receptor 1B (BMPR1B), bone morphogenetic protein 15 (BMP15) and growth differentiation factor 9 (GDF9) genes play a vital role in ovulation rate and prolificacy in ewes. Therefore, the present study aims to investigate BMPR1B, BMP15 and GDF9 gene mutations in prolific ewes of Iranian fat-tailed Lori-Bakhtiari sheep. MATERIALS AND METHODS: In the present experimental study, genomic DNA was extracted from whole blood of 10 prolific Lori-Bakhtiari ewes with at least two twinning records in the first four parities to identify point mutations of the BMPR1B, BMP15 and GDF9 genes, using DNA sequencing...
April 2018: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/29333609/runs-of-homozygosity-reveal-genome-wide-autozygosity-in-italian-sheep-breeds
#17
S Mastrangelo, E Ciani, M T Sardina, G Sottile, F Pilla, B Portolano
The availability of dense single nucleotide polymorphism (SNP) assays allows for the determination of autozygous segments based on runs of consecutive homozygous genotypes (ROH). The aim of the present study was to investigate the occurrence and distribution of ROH in 21 Italian sheep breeds using medium-density SNP genotypes in order to characterize autozygosity and identify genomic regions that frequently appeared in ROH within individuals, namely ROH islands. After filtering, the final number of animals and SNPs retained for analyses were 502 and 46 277 respectively...
January 15, 2018: Animal Genetics
https://www.readbyqxmd.com/read/29332623/gene-expression-and-lymphocyte-population-at-the-fetal-maternal-interface-in-sheep-pregnancies-established-by-somatic-cell-nuclear-transfer
#18
Jason A Koroghli, Elizabeth Floyd, Misha Regouski, Kerry Rood, Kirsten Gash, Kip Panter, Rusty Stott, Christopher J Davies, Irina A Polejaeva, Heloisa M Rutigliano
The hypothesis of this study was that the leukocyte populations and expression levels of genes related to immune response, growth factors and apoptosis would be altered at the fetal-maternal interface in somatic cell nuclear transfer (SCNT)-generated sheep pregnancies. Placental and endometrial samples from sheep pregnancies established by SCNT and natural breeding (control) were collected at 45 days and at term. Expression of genes related to growth factors, apoptosis and immune response was examined using quantitative reverse transcription polymerase chain reaction...
January 15, 2018: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/29332156/enterocytozoon-bieneusi-genotypes-in-tibetan-sheep-and-yaks
#19
Qiang Zhang, Jinzhong Cai, Pei Li, Lin Wang, Yaqiong Guo, Chunhua Li, Mengtong Lei, Yaoyu Feng, Lihua Xiao
Few studies have been conducted on the distribution of Enterocytozoon bieneusi genotypes in Tibetan sheep and yaks, which live outdoors in extreme climate with high altitude. In this study, fecal specimens from 312 Tibetan sheep and 554 yaks in Qinghai, China, were collected and examined for E. bieneusi by PCR-sequence analysis of the ribosomal internal transcribed spacer. Among them, 73 (23.4%) specimens from Tibetan sheep and 40 (7.2%) from yaks were positive for E. bieneusi. There were eight E. bieneusi genotypes in Tibetan sheep, including three known ones (BEB6, COS-I, and NESH5) and five novel ones (named as CHS13-CHS17)...
January 14, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29331906/strontium-hydroxyapatite-scaffolds-engineered-with-stem-cells-aid-osteointegration-and-osteogenesis-in-osteoporotic-sheep-model
#20
Sunitha Chandran, Sachin J Shenoy, Suresh Babu S, Renjith P Nair, Varma H K, Annie John
Osteoporotic fracture healing is an orthopaedic challenge due to excessive bone resorption and impaired osteogenesis. Majority of current treatment strategies focus on regulating bone resorption and the potential application of Mesenchymal Stem Cells (MSCs) in promoting osteogenesis has not been explored much. Furthermore, the present study has put forth a novel approach, wherein the synergistic action of Strontium (Sr) and MSCs in a single implant may facilitate osteoporotic bone healing. Strontium Hydroxyapatite (SrHA) synthesized by wet precipitation was fabricated into tissue engineered Strontium incorporated Hydroxyapatite (cSrHA) using sheep adipose tissue derived MSCs (ADMSCs)...
December 28, 2017: Colloids and Surfaces. B, Biointerfaces
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