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Therapeutic Application of Extracellular Vesicles Derived from Mesenchymal Stem Cells in Domestic Animals.
Animals : an open access journal from MDPI    July 24, 2024   Volume 14, Issue 15 2147 doi: 10.3390/ani14152147
Lanci A, Iacono E, Merlo B.Recently, the therapeutic potential of extracellular vesicles (EVs) derived from mesenchymal stem cells (MSCs) has been extensively studied in both human and veterinary medicine. EVs are nano-sized particles containing biological components commonly found in other biological materials. For that reason, EV isolation and characterization are critical to draw precise conclusions during their investigation. Research on EVs within veterinary medicine is still considered in its early phases, yet numerous papers were published in recent years. The conventional adult tissues for deriving MSCs include ...
Roles of collagen cross-links and osteon collagen/lamellar morphotypes in equine third metacarpals in tension and compression tests.
The Journal of experimental biology    July 24, 2024   Volume 227, Issue 14 jeb247758 doi: 10.1242/jeb.247758
Skedros JG, Dayton MR, Cronin JT, Mears CS, Bloebaum RD, Wang X, Bachus KN.Many bones experience bending, placing one side in net compression and the other in net tension. Because bone mechanical properties are relatively reduced in tension compared with compression, adaptations are needed to reduce fracture risk. Several toughening mechanisms exist in bone, yet little is known of the influences of secondary osteon collagen/lamellar 'morphotypes' and potential interplay with intermolecular collagen cross-links (CCLs) in prevalent/predominant tension- and compression-loaded regions. Paired third metacarpals (MC3s) from 10 adult horses were prepared for mechanical test...
Fungal aerosol and particulate matter in horse stables in Poland.
Applied microbiology and biotechnology    July 24, 2024   Volume 108, Issue 1 426 doi: 10.1007/s00253-024-13258-4
Grzyb J, Podstawski Z, Bulski K.Horses stay in different types of stables; especially during the cold season, they stay inside for most of the day. A stable is also a place where many people spend quite a lot of time either as employees who care for and train horses or as equine enthusiasts. Keeping horses in stables causes their constant exposure to high concentrations of particulate matter (PM) and molds in the air inside these facilities. The study was conducted in Udórz Stud Farm located in the southern region of Poland. It was carried out in two different types of stables: three runners and two box stables. The study c...
Causes, treatment, and outcome of hyphema, fibrin, and vitreal hemorrhage in horses: 219 cases (2012-2023).
Journal of the American Veterinary Medical Association    July 24, 2024   Volume 262, Issue S2 S94-S101 doi: 10.2460/javma.24.04.0258
Gould J, Wells M, de Linde Henriksen M, Gilger BC.To determine the causes, time to resolution, effect of therapeutics, and ocular sequelae of hyphema, fibrin, and/or vitreal hemorrhage in horses. Methods: 225 horses (219 eyes) who were diagnosed with hyphema, fibrin, and/or vitreal hemorrhage. Methods: Records were retrospectively reviewed for the horses. Signalment, ophthalmic examination findings, causes, treatments, and outcomes were evaluated. Results: Common causes of intraocular fibrin or hemorrhage were equine recurrent uveitis (42/219 horses), corneal stromal abscess (32/219 horses), corneal stromal ulcer (25/219 horses), and trauma (...
An Explorative Anatomical Study on Inter-Individual Variation of the Tibial Nerve and Landmarks for Perineural Anesthesia in Horses.
Animals : an open access journal from MDPI    July 24, 2024   Volume 14, Issue 15 2161 doi: 10.3390/ani14152161
De Schryver M, Oosterlinck M.Perineural anesthesia of the tibial nerve can be performed ultrasound-guided or blindly, with the latter still being commonly used in equine practice due to practical constraints, despite its lower accuracy and hence, common failure to achieve desensitization. This may be associated with anatomical variations or inadequate landmarks for injection. To examine the course of the tibial nerve, document potential anatomical variations, and determine optimal landmarks for perineural injection, dissection was conducted along the medial aspect of the tibia in 10 paired cadaver hindlimbs. No anatomical...
Seroprevalence of Toxoplasma gondii and Neospora spp. in horse population of Tehran, Iran.
Scientific reports    July 24, 2024   Volume 14, Issue 1 17054 doi: 10.1038/s41598-024-61999-z
Shams F, Jokar M, Abdous A, Mohammadi P, Abbassioun A, Seuberlich T, Rahmanian V.Neospora spp. and Toxoplasma gondii are two closely related protozoan parasites that are widely distributed throughout the world. Horses can act as intermediate hosts for both parasites and can acquire disease. Blood samples were taken from 487 clinically healthy horses from 17 different mechanized stables in Tehran, the capital of Iran, during September and November of 2022. IFAT and ELISA were employed to detect antibodies directed against Neospora spp. and T. gondii. The anti-N. caninum antibodies were detected in 52 of the horses (10.67%) based on IFAT and in 86 of the 487 horses (17.65%) ...
Determinants of joint effusion in tarsocrural osteochondrosis of yearling Standardbred horses.
Frontiers in veterinary science    July 24, 2024   Volume 11 1389798 doi: 10.3389/fvets.2024.1389798
Bertuglia A, Pallante M, Pagliara E, Valle D, Bergamini L, Bollo E, Bullone M, Riccio B.Tarsocrural osteochondrosis (OCD) is a developmental orthopedic disease commonly affecting young Standardbreds, with different fragment localization and size. Clinically, it is characterized by variable synovial effusion in the absence of lameness, whose determinants are ill-defined. We hypothesized that localization and physical characteristics of the osteochondral fragments like dimensions, multifragmentation, and instability influence joint effusion and correlate with synovial markers of cartilage degradation and inflammation. Clinical data, synovial fluid and intact osteochondral fragments...
Shifts in receptors during submergence of an encephalitic arbovirus.
Nature    July 24, 2024   Volume 632, Issue 8025 614-621 doi: 10.1038/s41586-024-07740-2
Li W, Plante JA, Lin C, Basu H, Plung JS, Fan X, Boeckers JM, Oros J, Buck TK, Anekal PV, Hanson WA, Varnum H, Wells A, Mann CJ, Tjang LV, Yang P....Western equine encephalitis virus (WEEV) is an arthropod-borne virus (arbovirus) that frequently caused major outbreaks of encephalitis in humans and horses in the early twentieth century, but the frequency of outbreaks has since decreased markedly, and strains of this alphavirus isolated in the past two decades are less virulent in mammals than strains isolated in the 1930s and 1940s. The basis for this phenotypic change in WEEV strains and coincident decrease in epizootic activity (known as viral submergence) is unclear, as is the possibility of re-emergence of highly virulent strains. Here...
Time budgets and weight shifting as indicators of pain in hospitalized horses.
Frontiers in pain research (Lausanne, Switzerland)    July 23, 2024   Volume 5 1410302 doi: 10.3389/fpain.2024.1410302
Nowak M, Martin-Cirera A, Jenner F, Auer U.Pain assessment in horses presents a significant challenge due to their nonverbal nature and their tendency to conceal signs of discomfort in the presence of potential threats, including humans. Therefore, this study aimed to identify pain-associated behaviors amenable to automated AI-based detection in video recordings. Additionally, it sought to determine correlations between pain intensity and behavioral and postural parameters by analyzing factors such as time budgets, weight shifting, and unstable resting. The ultimate goal is to facilitate the development of AI-based quantitative tools f...
Molecular detection and identification of Enteromonas species in human and animal hosts using polymerase chain reaction and DNA sequencing.
MethodsX    July 23, 2024   Volume 13 102875 doi: 10.1016/j.mex.2024.102875
Lacante SA, Jiang C, Mustamir AA, Mizuno T, Bi X, Syafruddin D, Tokoro M., a human intestinal protozoan parasite of the diplomonad group, has been overlooked because of its commensal features; therefore, molecular studies on this parasite are limited. To address this gap, we designed a molecular screening protocol using polymerase chain reaction (PCR) and DNA sequencing targeting the 18S small subunit ribosomal RNA gene and applied this screening method to the molecular epidemiological analysis of spp. in humans and various livestock. We validated our methodology using stool samples collected from 215 humans and 270 animal hosts (buffaloes, pigs, dogs, goats, hors...
A Scoping Review of Equine-Assisted Therapies on the Mental Health and Well-Being of Autistic Children and Adolescents: Exploring the Possibilities.
Issues in mental health nursing    July 23, 2024   Volume 45, Issue 9 948-960 doi: 10.1080/01612840.2024.2364236
Cleary M, West S, Thapa DK, Hungerford C, McLean L, Johnston-Devin C, Kornhaber R.Animals are increasingly being utilized to assist with therapies for people with various health conditions. Horses are often used as a mechanism of engagement and development for autistic children and adolescents. Horses offer a unique opportunity for interaction as the child or adolescent can physically ride and interact with the animal, thus creating a therapy that involves contact that is different to other animals. Benefits derived from equine-assisted therapies can be physical, social, behavioral, emotional, sensory, and cognitive. However, a current and specific research gap exists in un...
Occurrence of fenbendazole resistance in Parascaris spp. on breeding farms in Sweden.
Veterinary parasitology    July 22, 2024   Volume 331 110272 doi: 10.1016/j.vetpar.2024.110272
Martin F, Halvarsson P, Alm YH, Tydén E.Anthelmintic resistance is an increasing problem in many gastrointestinal parasites of grazing animals. Among these, the equine roundworm, Parascaris spp., has developed wide-spread resistance to macrocyclic lactones over the past decades. Additionally, there are recent observations of emerging treatment failure of both tetrahydropyrimidine and fenbendazole. Therefore, the aims of this study were to further investigate the occurrence of fenbendazole resistance on breeding farms and to explore potential management-related risk factors associated with resistance in Parascaris spp. in Sweden. Ele...
Methanogenic patterns in the gut microbiome are associated with survival in a population of feral horses.
Nature communications    July 22, 2024   Volume 15, Issue 1 6012 doi: 10.1038/s41467-024-49963-x
Stothart MR, McLoughlin PD, Medill SA, Greuel RJ, Wilson AJ, Poissant J.Gut microbiomes are widely hypothesised to influence host fitness and have been experimentally shown to affect host health and phenotypes under laboratory conditions. However, the extent to which they do so in free-living animal populations and the proximate mechanisms involved remain open questions. In this study, using long-term, individual-based life history and shallow shotgun metagenomic sequencing data (2394 fecal samples from 794 individuals collected between 2013-2019), we quantify relationships between gut microbiome variation and survival in a feral population of horses under natural...
Concurrent radiological and ultrasonographical findings in the forelimb proximal sesamoid bones and adjacent suspensory ligament branches in yearling and 2-year-old Thoroughbred sales horses.
Equine veterinary journal    July 22, 2024   doi: 10.1111/evj.14120
Peat FJ, Kawcak CE, McIlwraith CW, Berk JT, Keenan DP.Changes in the proximal sesamoid bones (sesamoids) and the insertional region of the adjacent suspensory ligament branch (branch) are of particular importance in young Thoroughbreds sold at public auction. Little is known about the prevalence of concurrent ultrasonographical branch change, relative to the various grades of radiological sesamoid appearance. Objective: To examine the existence of concurrent radiological and ultrasonographical findings in individual sesamoid-branch units in sales horses; to determine whether there are any radiological findings that are consistently accompanied by...
First report of Equine Parvovirus-Hepatitis (EqPV-H) in Argentina.
Veterinary journal (London, England : 1997)    July 22, 2024   Volume 306 106204 doi: 10.1016/j.tvjl.2024.106204
Olguin-Perglione C, Politzki R, Alvarez I, Ruiz V.The novel Equine Parvovirus-Hepatitis (EqPV-H) was first identified in the serum and liver of a horse that died of equine serum hepatitis, also known as Theiler's disease. Several reports in recent years strongly suggest that EqPV-H is the etiologic agent of Theiler's disease. Brazil is the only South American country where infection with this virus has been reported. This study investigated the presence of EqPV-H DNA in horse serum pools (n=51), commercial horse serum batches (n=5) and individual serum samples from donor horses (n=175) from Argentina. All serum samples were analyzed by quanti...
Inertial sensor data of horses from four breeds at walk and trot in hand on a straight line.
Data in brief    July 22, 2024   Volume 55 110764 doi: 10.1016/j.dib.2024.110764
Gmel AI, Haraldsdóttir EH, Serra-Bragança F, Lamas LP, Rosa TV, Stefaniuk-Szmukier M, Klecel W, Neuditschko M, Weishaupt MA.Horses have been used and bred for centuries for their movements. However, specific breeds are expected to have different movement capabilities. We have measured 425 horses from four different breeds at walk and trot on a straight line using an inertial measurement unit (IMU) system (EquiMoves®). This article describes how the data was collected, filtered and analysed to provide a useable dataset of 28 movement variables. It provides a full protocol for field measurements and requirements for adequate trials for analysis. Intra-class correlation coefficient estimates are also provided to asse...
The use of serum paraoxonase-1 to assess inflammation in horses with colitis.
Veterinary clinical pathology    July 21, 2024   Volume 53, Issue 3 358-368 doi: 10.1111/vcp.13372
Winther MF, Johnsson J, Madsen PK, Pihl TH, Paltrinieri S, Cerón JJ, Scavone D, Pardo-Marin L, Jacobsen S.Paraoxonase-1 (PON-1) has been suggested as a marker of inflammation and oxidative stress in horses and could potentially be used for prognostication in horses with colitis. Objective: Assessment of PON-1 in horses with colitis and comparison of two methods. Methods: Serum PON-1 was measured by two methods (paraoxon and p-nitrophenyl acetate) in 161 horses with colitis and 57 controls. Follow-up samples obtained during hospitalization were available from 106 horses with colitis. The two methods were compared. Results: Serum PON-1 was significantly lower in horses with colitis than in healthy h...
Impact of low-dose ozone supplementation on motility parameters and bacterial growth in horse cryopreserved semen.
Veterinary and animal science    July 21, 2024   Volume 25 100380 doi: 10.1016/j.vas.2024.100380
Fanelli D, Moroni R, Sala G, Melanie P, Tarabella I, Telleschi N, Maltinti S, Giorgi M, Barsotti G, Passamonti F, Marmorini P, Rota A, Camillo F....Two studies were conducted to evaluate the use of medical ozone (O) in commercial extenders for equine semen cryopreservation. In the first study (Study 1), 0, 5, and 15 µg/mL of O were added to diluents of refrigerated or frozen semen. Samples were evaluated for sperm kinematics at different time points for the chilled samples and after a thermoresistence test for the frozen/thawed samples. In the second study (Study 2), 0, 5, and 10 µg/mL of O were added to an antibiotic-free diluent for refrigerated semen for comparison with the control group in which semen was diluted in the same diluent...
Trunk kinematics and limb movement of horses walking backwards and forwards in hand and lifting a single limb.
Veterinary journal (London, England : 1997)    July 20, 2024   Volume 306 106202 doi: 10.1016/j.tvjl.2024.106202
Jobst ID, Zsoldos RR, Licka TF.Equine physiotherapy commonly includes basic exercises such as walking backward (BW) and voluntary lifting of single limbs (SLL), but trunk movements during these have not been studied. In order to compare the trunk kinematics during BW and SLL with forward walking (FW), nine horses were measured in FW, BW and during SLL triggered by tactile cue. Kinematics were obtained from skin markers captured by ten high-speed video cameras. Trunk angles were calculated in sagittal and horizontal planes from withers, dorsal to spinous processes of the 16th thoracic vertebra (T16), 2nd and 4th sacral verte...
The first study of the prevalence and genetic diversity of Theileria equi and Babesia caballi in horses in Russia.
Parasitology research    July 20, 2024   Volume 123, Issue 7 279 doi: 10.1007/s00436-024-08300-3
Rar V, Marchenko V, Suntsova O, Epikhina T, Tikunov A, Meltsov I, Fedorets V, Igolkina Y, Kozlova I, Tikunova N.Equine piroplasmosis (EP) is a global worldwide infection, which can lead to the death of animals. Despite the causative agents of EP being well studied, there are no data on the distribution and genetic characteristics of EP agents in any region of Russia. In this study, blood samples from 750 horses from Novosibirsk province, Irkutsk province, and Altai region of Russian Siberia were examined for the presence of EP agents. Theileria equi and Babesia caballi were detected in all examined regions, with mean prevalence rates of 60.4% and 7.2%, respectively. The identified pathogens were genetic...
Sporocysts of Sarcocystis bertrami (syn. Sarcocystis fayeri) shed by dogs: Molecular analysis, morphometry and pattern of excretion.
Veterinary parasitology    July 20, 2024   Volume 331 110269 doi: 10.1016/j.vetpar.2024.110269
Marques CDP, da Silva BWS, Nogueira YVS, Bezerra TL, Borges-Silva W, Soares RM, Gondim LFP.Sarcocystis bertrami (synonym: Sarcocystis fayeri) is a coccidian parasite that infects horses and donkeys in several countries. Dogs are known as definitive hosts of the parasite, however, the patent period is not well defined, and S. bertrami shed by dogs has never been confirmed by molecular methods. Here we investigated the shedding of S. bertrami by experimentally infected dogs and examined the excreted parasites by morphological and molecular tools. Three dogs of small breeds (one Yorkshire terrier and two miniature Pinschers) were acquired with ages of 30 and 60 days and were exclusivel...
Unusual left colon displacement and clockwise torsion in a 10-month-old Arab filly: A case report.
Veterinary medicine and science    July 20, 2024   Volume 10, Issue 4 e1481 doi: 10.1002/vms3.1481
Azizi S, Mazaheri-Khameneh R, Davoodi F, Gooran MM, Ghoreishi SS, Mozaffari N, Dalir-Naghadeh B.In this case report, we present an unusual clockwise torsion of left colon around mesenteric root in a 10-month-old Arab filly, highlighting the clinical presentation, diagnostic approach and successful surgical intervention. A 10-month-old Arab filly weighing approximately 250 kg was referred with signs of acute abdominal pain. The history revealed anorexia, restlessness and severe abdominal pain that had begun the previous day. The local practitioner had previously administered flunixin meglumine, an analgesic, but it proved ineffective in relieving the pain. Upon physical examination, the ...
Ethical issues concerning UK veterinary surgeons practicing in equine sports medicine.
Equine veterinary journal    July 20, 2024   doi: 10.1111/evj.14204
Allen K, King M, Anderson L, Mullan S.The ethics of equine sports medicine is a complex subject that is currently understudied. It combines veterinary ethics, sports ethics and associated regulation. Equine sports medicine may raise unique ethical issues and combines common ethical issues in ways distinct from other forms of veterinary medicine. Objective: The purpose of this research was to identify and describe ethical issues concerning United Kingdom (UK) veterinary surgeons arising within the practice of equine sports medicine. Methods: Survey. Methods: An online questionnaire was distributed to UK veterinary surgeons via vete...
The complete genome of equid herpesvirus-1 (EHV-1) field isolates from Argentina reveals an interspecific recombinant strain.
Virus genes    July 19, 2024   Volume 60, Issue 5 559-562 doi: 10.1007/s11262-024-02093-4
Tau RL, Marandino AE, Panzera Y, Alamos F, Vissani MA, Romera SA, Pérez R, Maidana SS.The Equid alphaherpesvirus type 1 (EHV-1) infection can have devastating economic consequences in the horse industry due to large-scale outbreaks of abortions, perinatal foal mortality, and myeloencephalopathy. The present study analyzed the genome of two isolates obtained from aborted fetuses in Argentina, E/745/99 and E/1297/07. The E745/99 genome shares 98.2% sequence identity with Ab4, a reference EHV-1 strain. The E/1297/07 genome shares 99.8% identity with NY03, a recombinant strain containing part of ORF64 and part of the intergenic region from Equid alphaherpesvirus-4 (EHV-4). The E/12...
Workload and spirometry associated with untethered swimming in horses.
BMC veterinary research    July 19, 2024   Volume 20, Issue 1 327 doi: 10.1186/s12917-024-04143-3
Leguillette R, McCrae P, Massie S, Filho SA, Bayly W, David F.Swimming has been used empirically for rehabilitation and conditioning of horses. However, due to challenges imposed by recording physiological parameters in water, the intensity of free swimming effort is unknown. Objective: Measure the physiological workload associated with untethered swimming in horses. Five fit Arabian endurance horses were assessed while swimming in a 100 m-long indoor pool. Horses were equipped with a modified ergospirometry facemask to measure oxygen consumption (V̇O) and ventilatory parameters (inspired/expired volumes, V, V; peak inspiratory/expiratory flows, PkV, P...
Histological evaluation of cardiac remodelling in equine athletes.
Scientific reports    July 19, 2024   Volume 14, Issue 1 16709 doi: 10.1038/s41598-024-67621-6
Nath LC, Saljic A, Buhl R, Elliott A, La Gerche A, Ye C, Schmidt Royal H, Lundgren Virklund K, Agbaedeng TA, Stent A, Franklin S.Approximately 1-2 per 100,000 young athletes die from sudden cardiac death (SCD) and extreme exercise may be associated with myocardial scar and arrhythmias. Racehorses have a high prevalence of atrial fibrillation (AF) and SCD but the presence of myocardial scar and inflammation has not been evaluated. Cardiac tissues from the left (LAA) and right (RAA) atrial appendages, left ventricular anterior (LVAPM) and posterior (LVPPM) papillary muscles, and right side of the interventricular septum (IVS-R) were harvested from racehorses with sudden cardiac death (SCD, n = 16) or other fatal injur...
Natural grazing by horses and cattle promotes bird diversity in a restored European alluvial grassland.
PeerJ    July 19, 2024   Volume 12 e17777 doi: 10.7717/peerj.17777
Lovász L, Korner-Nievergelt F, Amrhein V.A challenge in grassland conservation is to maintain both the openness and the heterogeneity of the habitat to support the diversity of their animal communities, including birds-a taxon that is known to be sensitive to disturbance. An increasingly used management tool in European grassland conservation, especially in rewilding projects, is grazing by large herbivores such as horses and cattle. These grazers are believed to create and maintain patchy landscapes that promote diversity and richness of other species, but their influence on birds is often debated by conservationists, who raise conc...
Histopathological and Virological Findings of a Penile Papilloma in a Japanese Stallion with Equus Caballus Papillomavirus 2 (EcPV2).
Pathogens (Basel, Switzerland)    July 19, 2024   Volume 13, Issue 7 597 doi: 10.3390/pathogens13070597
Uchida-Fujii E, Kato Y, Ueno T, Numasawa Y, Yusa S, Haga T.Equus caballus papillomavirus 2 (EcPV2) is known to cause genital neoplasms in horses. However, reports on EcPV2 in Japan and Asia are limited. Herein, we present the histopathological and virological findings of the first reported case of an EcPV2-associated penile mass in Japan. The patient was a 22-year-old stallion with a history of breeding in Japan and abroad. Histopathological examination contained RNA in situ hybridization targeting the E6/E7 region and an immunohistochemical approach, and whole-genome sequencing was conducted within the viral examination. Proliferating epidermal cells...
Prostaglandin-related genes are differentially expressed in equine endometrium with different biopsy grade, degrees of inflammation, and fibrosis.
Theriogenology    July 19, 2024   Volume 227 151-156 doi: 10.1016/j.theriogenology.2024.07.014
Byron M, Lection J, Foster RA, Chenier T, Wagner B, Diel de Amorim M.Prostaglandins have many roles in the equine reproductive tract, including but not limited to luteolysis, luteal support, ovulation, transport through the uterine tube, uterine contraction, embryonic mobility, inflammation, and fibrosis. Altered secretion of inflammatory proteins are likely to disrupt the balance of endometrial function and could impair fertility. Our overall goal was to measure the expression of several prostaglandin- and inflammation-related genes in mares with different degrees of endometrial histological changes. Our hypothesis was that mares with neutrophilic and lymphocy...
Hoof wall masses removal in 30 standing sedated horses: Surgical technique, postoperative complications and long-term outcome.
Veterinary surgery : VS    July 19, 2024   Volume 54, Issue 1 77-88 doi: 10.1111/vsu.14137
Ross C, White JM, Hibner-Szaltys M, Stephenson RS, Withers JM, Marcatili M.To describe the surgical technique for removal of hoof wall masses in horses under standing sedation (SS) and local anesthesia (LA), and to report complications and long-term outcome following surgery. Methods: Observational retrospective study. Methods: Client-owned horses (n = 30). Methods: Horses undergoing keratoma removal under SS and LA in a single equine hospital between August 2016 and July 2023 were included in the study. Signalment, affected foot, history of lameness and/or foot abscesses, degree of lameness on admission, imaging findings (radiography and magnetic resonance imagi...