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Genomic revelations: investigating rotavirus a presence in wild ruminants and its zoonotic potential.
Frontiers in veterinary science    August 15, 2024   Volume 11 1429654 doi: 10.3389/fvets.2024.1429654
Šenica P, Žele Vengušt D, Vengušt G, Kuhar U.Rotaviruses A (RVA) are a major cause of acute viral gastroenteritis in humans worldwide and are responsible for about two million hospitalizations per year. They can also infect other mammals such as pigs, calves, goats, lambs, and horses, in which they are also considered a major cause of viral diarrhea. While RVA is well studied in humans and domestic animals, its occurrence in wild ruminants is not well known. The RVA genome is a double-stranded RNA consisting of 11 segments, and genotyping is based on the VP7 (G) and VP4 (P) segments. Currently, there are 42G genotypes and 58P genotypes. ...
Peri-anaesthetic complications in 1798 equids undergoing high-field elective orthopaedic MRI at a tertiary referral hospital.
Equine veterinary journal    August 14, 2024   Volume 57, Issue 3 666-673 doi: 10.1111/evj.14208
Manning H, Sampson S.Antimicrobial prophylaxis for elective orthopaedic magnetic resonance imaging (MRI) in equids is a topic of debate among practitioners and can have negative detrimental effects on patients if used unnecessarily. Objective: To describe the complications with elective orthopaedic MRI of horses, mules, and donkeys under general anaesthesia without the use of peri-anaesthetic antimicrobial prophylaxis at a single large tertiary referral centre. We hypothesised that horses, mules, and donkeys undergoing general anaesthesia for elective orthopaedic MRI, without antimicrobial prophylaxis, will not be...
New insights in the diagnosis and treatment of equine piroplasmosis: pitfalls, idiosyncrasies, and myths.
Frontiers in veterinary science    August 14, 2024   Volume 11 1459989 doi: 10.3389/fvets.2024.1459989
Mendoza FJ, Pérez-Écija A, Kappmeyer LS, Suarez CE, Bastos RG.Equine piroplasmosis (EP) is a global tick-borne disease of equids caused by the intraerythrocytic apicomplexan parasites and , and the more recently discovered . These parasites can be transmitted by several tick species, including , , and , but iatrogenic and vertical transmission are also common. Clinical signs of EP include poor performance, fever, icterus, abortions, among others, and peracute or acute forms of infection are associated with high mortality in non-endemic areas. EP is a reportable disease and represents an important barrier for the international trade of horses and other e...
Assessing the Peripheral Levels of the Neurotransmitters Noradrenaline, Dopamine and Serotonin and the Oxidant/Antioxidant Equilibrium in Circus Horses.
Animals : an open access journal from MDPI    August 14, 2024   Volume 14, Issue 16 2354 doi: 10.3390/ani14162354
Cocco R, Sechi S, Rizzo M, Arrigo F, Giannetto C, Piccione G, Arfuso F.Due to the paucity of information on circus management effects on the welfare of horses, this study investigated the plasma concentrations of noradrenaline, dopamine and serotonin, known to be indices of mental status, as well as the reactive oxygen metabolites (d-Roms) and the biological antioxidant potential (BAP), likely to denote the oxidant/antioxidant equilibrium of organisms, in horses managed in different Italian circuses. For the study, 56 circus horses of different breeds and ages were enrolled and divided into six groups according to the horses' management (circus management, groups...
In search of epigenetic hallmarks of different tissues: an integrative omics study of horse liver, lung, and heart.
Mammalian genome : official journal of the International Mammalian Genome Society    August 14, 2024   doi: 10.1007/s00335-024-10057-0
Semik-Gurgul E, Pawlina-Tyszko K, Gurgul A, Szmatoła T, Rybińska J, Ząbek T.DNA methylation and microRNA (miRNA) expression are epigenetic mechanisms essential for regulating tissue-specific gene expression and metabolic processes. However, high-resolution transcriptome, methylome, or miRNAome data is only available for a few model organisms and selected tissues. Up to date, only a few studies have reported on gene expression, DNA methylation, or miRNA expression in adult equine tissues at the genome-wide level. In the present study, we used RNA-Seq, miRNA-seq, and reduced representation bisulfite sequencing (RRBS) data from the heart, lung, and liver tissues of healt...
Comparison of radiography and computed tomography for identification of third metacarpal structural change and associated assessment of condylar stress fracture risk in Thoroughbred racehorses.
Equine veterinary journal    August 14, 2024   doi: 10.1111/evj.14131
Irandoust S, O'Neil LM, Stevenson CM, Franseen FM, Ramzan PHL, Powell SE, Brounts SH, Loeber SJ, Ergun DL, Whitton RC, Henak CR, Muir P.Catastrophic injury has a low incidence but leads to the death of many Thoroughbred racehorses. Objective: To determine sensitivity, specificity, and reliability for third metacarpal condylar stress fracture risk assessment from digital radiographs (DR) and standing computed tomography (sCT). Methods: Controlled ex vivo experiment. Methods: A blinded set of metacarpophalangeal joint DR and sCT images were prepared from 31 Thoroughbreds. Four observers evaluated the condyles and parasagittal grooves (PSG) of the third metacarpal bone for the extent of dense bone and lucency/fissure and assigned...
Effect of Mitoquinone on sperm quality of cryopreserved stallion semen.
Journal of equine veterinary science    August 14, 2024   Volume 141 105168 doi: 10.1016/j.jevs.2024.105168
Elkhawagah AR, Donato GG, Poletto M, Martino NA, Vincenti L, Conti L, Necchi D, Nervo T.This study aimed to investigate the effect of mitochondria-targeted antioxidants (Mitoquinone, MitoQ) on the quality of frozen-thawed stallion semen. Semen samples collected from three fertile stallions aged 10 - 13 years, were filtered, centrifuged in a skimmed milk-based extender, and diluted to a final concentration of 50 × 106 sperm/mL in freezing medium. Diluted semen was divided into five experimental groups supplemented with MitoQ at concentrations of 0 (control), 25, 50, 100, and 200 nM and then subjected to freezing after cooling and equilibration. After thawing, semen was evaluated ...
Correlation between kinematic parameters, ataxia and ground-to-lip distance in detomidine sedated horses.
Equine veterinary journal    August 14, 2024   doi: 10.1111/evj.14207
Izquierdo-Moreno J, de Paz MI, Manso-Díaz G, Villalba-Orero M, López-Sanromán J.An accurate evaluation of the degree of sedation is mandatory to adjust the dosage of sedative drugs. Objective: To determine the correlation between head height above the ground and ataxia degree in horses sedated with detomidine and the correlation existing between accelerometric variables and both parameters. Methods: Retrospective study. Methods: Twelve horses were given 0.01 mg/kg of detomidine hydrochloride iv. Measured accelerometric parameters, with one accelerometer positioned between both sacral tuberosities, included speed, stride frequency and length, regularity, dorsoventral, lo...
Factors affecting pregnancy rates in mares bred with cryopreserved semen.
Journal of equine veterinary science    August 14, 2024   Volume 141 105167 doi: 10.1016/j.jevs.2024.105167
Pasch L, Stefanovski D, Dobbie T, Lewis G, Turner RM.Historically, 8 × 0.5 ml straws, containing approximately 800 million sperm and 250 million progressively motile sperm were provided as a single 'breeding dose' of cryopreserved stallion semen. With the use of deep horn artificial insemination, there is a trend to reduce the number of 0.5 ml straws sold as a breeding dose, sometimes down to as little as one straw. Our aims were to determine if the number of straws provided as a breeding dose, as well as other mare, stallion and management factors, have an impact on pregnancy outcome in mares inseminated with cryopreserved semen. Unexpectedly,...
Real-time in vivo confocal laser endomicroscopic imaging of equine endometrium: Preliminary observations and feasibility study.
Veterinary journal (London, England : 1997)    August 14, 2024   Volume 308 106222 doi: 10.1016/j.tvjl.2024.106222
Gallacher K, Woolford L, Santos LC, Serpa PBS, Len J, Gilbert RO, Kind KL.Endometrial health is vital for the reproductive efficiency of broodmares and accurate diagnostic testing is crucial for directing the best treatment options and outcomes. Confocal laser endomicroscopy (CLE) is an endoscopic technique for obtaining in-vivo, real-time microscopic imaging of tissues using a fiber optic probe. CLE relies on induced tissue fluorescence and fluorescein sodium, given intravenously, is the contrast agent most used in human medicine. This study aimed to determine the feasibility of CLE for imaging equine endometrium and determine a standard dose of fluorescein sodium ...
Persistently elevated liver enzymes and bile acids, icterus, and weight loss in a 1.5-year-old Thoroughbred colt.
Journal of the American Veterinary Medical Association    August 14, 2024   1-4 doi: 10.2460/javma.24.06.0422
Ahn S, Santana J, Baker R, Carossino M, Lee J.No abstract available
Placental homogeneity: Characterizing transcriptional variation among equine chorioallantoic locations.
Theriogenology    August 14, 2024   Volume 229 75-82 doi: 10.1016/j.theriogenology.2024.08.019
Verstraete MH, Dini P, Orellana D, Uribe-Salazar JM, Veras MM, Carneiro F, Daels P, Fernandes CB.The proper function of the placenta is essential for the health and growth of the fetus and the mother. The placenta relies on dynamic gene expression for its correct and timely development and function. Although numerous studies have identified genes vital for placental functions, equine placental molecular research has primarily focused on single placental locations, in sharp contrast with the broader approach in human studies. Here, we hypothesized that the molecular differences across different regions of the equine placenta are negligible because of its diffuse placental type with a macro...
Current practices in equine minimally invasive soft tissue surgery.
Veterinary surgery : VS    August 13, 2024   doi: 10.1111/vsu.14146
Hackett ES, McOnie RC, Buote NJ, Fubini SL.Equine minimally invasive surgical techniques are frequently utilized in the treatment of a variety of conditions. Standing sedated endoscopic surgery is commonly selected in horses, requiring specialized facilities, anesthetic protocols, and surgeon and assistant expertise. This review examines current methods and potential strategies in equine soft tissue surgery, in which there is an emphasis on laparoscopic urogenital and gastrointestinal diagnostic and therapeutic procedures. Thoracoscopy is less frequently reported in horses and may be underutilized. Optimizing procedures and outcomes in...
Environmental and Historical Determinants of African Horse Sickness: Insights from Predictive Modeling.
Transboundary and emerging diseases    August 13, 2024   Volume 2024 5586647 doi: 10.1155/2024/5586647
Kim K, Xu T, Kannan Villalan A, Chi T, Yu X, Jin M, Wu R, Ni G, Sui S, Wang Z, Wang X.African horse sickness (AHS) is a viral disease transmitted by arthropods that impacts Equidae, specifically horses and related species. Recognized as a notifiable disease by the World Organisation for Animal Health (WOAH), AHS is associated with a high mortality rate of 80%-90% in susceptible hosts and exhibits rapid transmission dynamics. Historical records document numerous instances of mass horse deaths attributed to AHS, with recent occurrences in Thailand and Malaysia in 2020 causing heightened concerns within the local horse industry. The lack of a comprehensive global perspective on th...
Molecular identification of haemoparasites in animals using blood lysate PCR: a quick and inexpensive alternative to purified whole genomic DNA.
Animal biotechnology    August 13, 2024   Volume 35, Issue 1 2390935 doi: 10.1080/10495398.2024.2390935
Kumar B, Brahmbhatt NN, Thakre B, Maharana BR, Parmar VL, Kumar M.Haemoparasitic diseases constitute a significant constraint to economic livestock farming. Diagnostic techniques that are inexpensive, rapid, reliable, and precise are crucial for the management of diseases. In this context, PCR assays are very valuable yet expensive since the samples must be processed before being included in the PCR reaction. Accordingly, the goal of the current study was to lower the PCR costs without jeopardizing the assay's sensitivity and specificity. For that purpose, the alkaline solution was optimized for low cost and quick DNA extraction (blood lysate), and PCR reage...
Oral probiotic administration attenuates postexercise inflammation in horses.
Translational animal science    August 13, 2024   Volume 8 txae124 doi: 10.1093/tas/txae124
Jacobs RD, Grum D, Trible B, Ayala DI, Karnezos TP, Gordon ME.Probiotics are commonly incorporated into equine diets to impart health and performance benefits; however, peer-reviewed evidence supporting their efficacy in horses is limited. Interestingly, bacteria from the Bacillus genus are gaining interest for their unique ability to impact metabolic, immune, and inflammatory pathways. The objective of this trial was to evaluate a selection of Bacilli for their role in altering the inflammatory response in horses to exercise. Eighteen horses were utilized in a randomized cross-over trial. Horses were randomly assigned to one of 6 starting treatments inc...
Comparative analysis of breeding patterns and reproductive efficiency of mares in subtropical conditions of Pakistan.
Veterinary medicine and science    August 12, 2024   Volume 10, Issue 5 e1582 doi: 10.1002/vms3.1582
Mahmood K, Hassan M, Channa AA, Ghafoor A, Riaz A.The present study aimed to evaluate and compare the overall and breed-specific seasonal breeding patterns, fertility rates, cyclicity, and follicular dynamics of Arab, Thoroughbred, and Percheron mares under the subtropical conditions of Pakistan. Methods: A retrospective analysis of climatic data and breeding records of eleven breeding studs spanning four years (2020-2023) was made to find out the overall seasonality in the breeding pattern of mares. Fifty mares of each breed (n = 150 in total) were scanned by ultrasonography for a calendar year to find the cyclicity pattern and follicular ...
Differences in pulmonary function measured by oscillometry between horses with mild-moderate equine asthma and healthy controls.
Equine veterinary journal    August 12, 2024   doi: 10.1111/evj.14206
The diagnosis of mild-moderate equine asthma (MEA) can be confirmed by airway endoscopy, bronchoalveolar lavage fluid (BALf) cytology, and lung function evaluation by indirect pleural pressure measurement. Oscillometry is a promising pulmonary function test method, but its ability to detect subclinical airway obstruction has been questioned. Objective: To evaluate the differences in lung function measured by oscillometry between healthy and MEA-affected horses. Methods: Prospective case-control clinical study. Methods: Thirty-seven horses were divided into healthy and MEA groups, based on hist...
Enhancing the Horse Grimace Scale (HGS): Proposed updates and anatomical descriptors for pain assessment.
Veterinary journal (London, England : 1997)    August 12, 2024   Volume 307 106223 doi: 10.1016/j.tvjl.2024.106223
Werner LC, de Oliveira GM, Daros RR, Costa ED, Michelotto PV.The use of grimace scales enables the clinical identification of changes in the facial expressions of animals caused by pain. The Horse Grimace Scale (HGS) is one such tool, comprising a pain coding system based on facial expressions and assessing six Facial Action Units (FAUs). Each FAU is accompanied by descriptions and anatomical details to assist the evaluator. However, the morphological descriptions for certain FAUs in the HGS are not sufficiently detailed, potentially hindering accurate interpretation. This study is an analytical investigation aimed at enhancing the morphoanatomical deta...
Assessment of fetal development during mid and late term pregnancies by standard B-Mode ultrasonography in Shetland ponies.
Journal of equine veterinary science    August 12, 2024   Volume 141 105162 doi: 10.1016/j.jevs.2024.105162
Wagner LH, Aurich J, Claaßen S, Melchert M, Kaps M, Aurich C.Transrectal and transabdominal ultrasonography is an established method to monitor pregnancy, fetal growth and wellbeing in different species. Growth charts with multiple bio-morphometric parameters to estimate days of gestation and days before parturition exist in small companion animals, sheep and goats, riding type horses and large ponies but not in small horse breeds like Shetland ponies. The aim of this study was to apply fetal biometric assessment and detailed description of physiologic fetal development to mid and late term pregnancies in Shetland mares and to generate reference data fo...
Transient efficacy of buparvaquone against Theileria haneyi in chronically infected horses.
Parasites & vectors    August 12, 2024   Volume 17, Issue 1 337 doi: 10.1186/s13071-024-06397-0
Onzere CK, Hassan A, Sears K, Kappmeyer LS, Villarino NF, Fry LM, Bastos RG.Theileria haneyi is one of the three known causative agents of equine piroplasmosis. While imidocarb is generally effective in the clearance of the highly pathogenic Theileria equi, it is ineffective in the treatment of T. haneyi. Moreover, co-infection with T. haneyi has been shown to impede the successful treatment of T. equi. Furthermore, tulathromycin and diclazuril have demonstrated inefficacy in eradicating T. haneyi. The absence of an effective therapeutic agent against this parasite represents a significant obstacle in managing equine piroplasmosis. Methods: To address this issue, we e...
Whole-genome sequencing and pathogenicity analysis of Rhodococcus equi isolated in horses.
BMC veterinary research    August 12, 2024   Volume 20, Issue 1 362 doi: 10.1186/s12917-024-04167-9
Hu B, Gao S, Zhang H, Li Q, Li G, Zhang S, Xing Y, Huang Y, Han S, Tian Y, Zhang W, He H.Rhodococcus equi (R. equi) is a Gram-positive zoonotic pathogen that frequently leads to illness and death in young horses (foals). This study presents the complete genome sequence of R. equi strain BJ13, which was isolated from a thoroughbred racehorse breeding farm in Beijing, China. Results: The BJ13 genome has a length of 5.30 Mb and consists of a complete chromosome and a plasmid measuring 5.22 Mb and 0.08 Mb, respectively. We predicted 4,929 coding gene open reading frames, along with 52 tRNAs and 12 rRNAs. Through analysis of mobile genetic elements, we identified 6 gene islands and ...
Equine uterine sanitizer: in vitro inhibition of endometritis-causing microorganisms and its stability to dilute antibiotics.
Journal of equine veterinary science    August 12, 2024   Volume 141 105163 doi: 10.1016/j.jevs.2024.105163
Mazzuchini MP, Lisboa FP, Segabinazzi LG, Canisso IF.Endometritis is the leading cause of mare subfertility. Most mares respond to standard therapy, but alternative therapies have been developed for mares failing to respond. This study aimed to investigate a commercially available, yet unassessed, product labeled as a uterine sanitizer to determine the in vitro antimicrobial activity against microorganisms associated with endometritis and its in vitro stability to dilute antibiotics. In experiment 1, the microdilution broth technique and antimicrobial effects were assessed against Escherichia sp, Staphylococcus sp., Klebsiella sp., Pseudomonas s...
Reduction of egg reappearance period of cyathostomins in naturally infected horses after increasing doses of ivermectin in Brazil: a grim picture for sustainable parasite control. Molento MB, Dall'Anese J, Pontarolo DV, Brandão YO, Yoshitani UY.Cyathostomins are the largest group of parasites in horses that can be controlled by ivermectin (IVM). This study aimed to run a four-dose titration trial of IVM in 28 naturally infected Thoroughbred yearlings. The local Strongyle population had been recorded to be resistant to IVM (200 µg/kg). The parasite fecal egg count (FEC) was performed to investigate the egg reappearance period (ERP) of two and five weeks (w2pt and w5pt) after IVM treatment. FEC was > 1000 on day zero for all groups. Although 100% FEC reduction was reported at w2pt for all concentrations, the FEC at w5pt revealed < 83%...
Prevotella bivia Infection of a Horse Bite Wound.
Cureus    August 10, 2024   Volume 16, Issue 8 e66571 doi: 10.7759/cureus.66571
Barton JC, Eisenberg AL.Horse bites are common non-fatal injuries in the United States. Infections of horse bite wounds in humans are usually due to bacteria that correspond to the oropharyngeal bacterial flora of horses. We report the novel case of a 25-year-old woman who sustained a horse bite wound that was infected with , a Gram-negative, non-pigmented anaerobe. We discuss the epidemiology, bacteriology, and clinical management of horse bites.
Use of extracorporeal hemoperfusion therapy in an adult horse with Clostridioides difficile colitis and severe systemic inflammatory response syndrome.
Journal of veterinary internal medicine    August 9, 2024   Volume 38, Issue 5 2790-2794 doi: 10.1111/jvim.17154
Hobbs KJ, Le Sueur ANV, Hallowell K, Martin E, Sheats MK, Ueda Y.An 8-year-old American Quarter Horse gelding was treated with extracorporeal hemoperfusion (HP) therapy for treatment of Clostridioides difficile (C. difficile) colitis-induced systemic inflammatory response syndrome (SIRS). The gelding developed C. difficile associated peracute colitis and severe SIRS as evidenced by a positive fecal C. difficile PCR and tachypnea, tachycardia, fever, neutropenia, altered mucous membrane color, and hyperlactatemia. Concurrent acute kidney injury in the horse limited the use of routine anti-inflammatory and anti-lipopolysaccharide treatments, including flunixi...
Bee-Inspired Healing: Apitherapy in Veterinary Medicine for Maintenance and Improvement Animal Health and Well-Being.
Pharmaceuticals (Basel, Switzerland)    August 9, 2024   Volume 17, Issue 8 doi: 10.3390/ph17081050
Stevanović J, Glavinić U, Ristanić M, Erjavec V, Denk B, Dolašević S, Stanimirović Z.This review aims to present current knowledge on the effects of honey bee products on animals based on in vivo studies, focusing on their application in clinical veterinary practice. Honey's best-proven effectiveness is in treating wounds, including those infected with antibiotic-resistant microorganisms, as evidenced in horses, cats, dogs, mice, and rats. Propolis manifested a healing effect in numerous inflammatory and painful conditions in mice, rats, dogs, and pigs and also helped in oncological cases in mice and rats. Bee venom is best known for its effectiveness in treating neuropathy an...
Effects of general anesthesia on airway immune cell function in an equine in vivo model.
Veterinary anaesthesia and analgesia    August 8, 2024   Volume 51, Issue 6 621-628 doi: 10.1016/j.vaa.2024.08.001
Woodrow JS, Palmisano M, Kulp J, Hopster K.Complications from general anesthesia, including pneumonia and decreased wound healing, are influenced by changes in immune cell function secondary to sedatives and anesthetics. It was hypothesized that immune cell function would be depressed in the early postanesthetic period. The objective was to investigate airway immune cell function before and after a general anesthetic episode in an equine in vivo model using ex vivo cell stimulations with lipopolysaccharide (LPS) for assessment of immune function. Methods: Prospective experimental study. Methods: Six healthy, adult, institution-owned ...
Clinical insights: Regenerative therapies in equine practice: Top 10 EVJ papers 2019-2024.
Equine veterinary journal    August 8, 2024   Volume 56, Issue 5 824-831 doi: 10.1111/evj.14136
Pezzanite L.No abstract available
Science-in-brief: The 6th Havemeyer Workshop on Rhodococcus equi-A decade-long journey in advancing research into a major equine pathogen (2012-2023).
Equine veterinary journal    August 8, 2024   Volume 56, Issue 5 838-841 doi: 10.1111/evj.14135
No abstract available