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Generalized sarcoidosis associated with hypertrophic osteopathy in a Standardbred racehorse. A Standardbred racehorse was presented for exercise intolerance, weight loss, pyrexia and facial deformity. Radiography and ultrasonography revealed periostitis and regional soft tissue swelling of maxillary bones. Computed tomography excluded any dental or sinus origin of these abnormalities. Further deformities on distal limbs and skin lesions appeared during hospitalization. Radiography identified bilateral periostitis and soft tissue swelling in the distal radius and metatarsal bones, as observed in the head, suggestive of hypertrophic osteopathy (HO). Skin biopsies revealed granulomatous ...
Unraveling the uterine fluid proteome of mares diagnosed with post-breeding and infectious endometritis. Endometritis is the leading cause of subfertility in mares and a significant challenge to equine reproduction. Unraveling uterine fluid proteome may promote advancements in the knowledge of endometritis etiopathogeneses and its diagnosis and therapeutic practices. Therefore, we aimed to characterize and compare the protein profile of the uterine fluid from healthy mares and animals diagnosed with endometritis. Mangalarga Marchador breed mares from Muriaé - Brazil were divided into control, infectious endometritis, and post-breeding endometritis groups (n = 8/ group). Uterine fluid was collect...
Genetic trends in body measurements at birth for Arabian horse in Türkiye. Changes in genetic variation in body measurements are a subject of interest. This study aimed to understand the changes in the genetic effects of body measurement at birth in Turkish Arabian foals over the years. Furthermore, estimating the sources of variation in body measurements at birth in Turkish Arabian foals, considering additive genetic, maternal genetic, and maternal permanent effects and the covariance between offspring and dams in animal models, was the objective of this study. The records for birth weight (BW), wither height (WH), chest circumference (CC), and cannon-bone circumfer...
Pergolide mesylate administration does not decrease blood thyroid hormone concentrations and thyroid function in horses. Pergolide, labeled for the treatment of pituitary pars intermedia dysfunction, is 90% protein bound and might cause a decrease in blood thyroid hormone concentrations by displacing them from binding proteins. This study investigated the effect of pergolide on the equine thyroid function. Methods: This was an analytic, observational, cohort study. Six horses (17 to 24 years old and 530 to 599 kg) received 1 mg of pergolide mesylate orally once a day from days 1 to 6. Total T4 (tT4) was measured daily from day 0 to 11 (before, during, and after pergolide treatment). Thyrotropin-releasing hormone...
A new smartphone-based digital stethoscope featuring phonocardiography and electrocardiography in adult horses. Smartphone-based technology is increasingly used in veterinary medicine as a complementary tool for cardiac auscultation and ECG recording. This prospective observational study evaluates a digital stethoscope (DS) that consists of simultaneous phonocardiographic and one-lead ECG recording (dECG) in adult horses, comparing it with auscultation using a conventional stethoscope (CS) and reference base-apex ECG (rECG). A total of 104 horses underwent cardiac auscultation using CSs and DSs to detect arrhythmias and murmurs. Audio and dECG were acquired using the DS. The rECG tracings were also reco...
Case report: Incomplete bypass ileocolostomy without partial typhlectomy in five horses with acute, non-reducible cecocolic intussusceptions and review of literature. Cecocolic intussusceptions are a rare condition of acute colic in horses requiring immediate surgical intervention due to persistent uncontrollable pain and ongoing ischemic cecal necrosis. Particularly in cases where reduction of the intussusception is surgically not feasible surgical interventions such as partial typhlectomy through colotomy (partial cecal amputation) combined with or without cecal bypass techniques are described. Alternatively, surgical interventions can also be performed without partial typhlectomy via incomplete bypass ileocolostomy. Information regarding applicable techn...
Clinical and morphological features of corneal lymphoma in 26 horses (27 eyes). Little information describing the biologic behaviour and therapies for corneal lymphoma exist. Objective: To characterise histologically confirmed equine corneal lymphoma considering breed, age or sex predisposition, histologic and immunologic features, therapies and outcomes. Methods: Retrospective case series. Methods: A multicentre retrospective medical record review was used to identify horses that presented with corneal disease confirmed morphologically as corneal lymphoma from 2012 to 2022. Results: Mean age at diagnosis was 10.5 years. Males represented 18/26 cases. Warmblood (14) and...
A review of the equine suspensory ligament: Injury prone yet understudied. The suspensory ligament (SL) is a key component of the elaborate and highly adapted suspensory apparatus in the horse. In addition to contributing to stabilisation of the metacarpophalangeal joint, the SL has a spring like function to reduce the energetic cost of locomotion. Although the SL is highly prone to injury in horses of all ages and competing in a wide range of disciplines, knowledge regarding fundamental structure-function relationships in the SL is lacking, particularly compared with other injury-prone tendinous structures such as the superficial digital flexor tendon. In this revie...
Effects of Hyperthermia and Acidosis on Mitochondrial Oxidative Phosphorylation. The intracellular environment of skeletal muscle can develop pronounced hyperthermia and acidosis during strenuous exercise, and these alterations in the typical intracellular conditions have been shown to alter mitochondrial respiration. However, the impact of these conditions on ATP synthesis is poorly understood. We used Thoroughbred racehorses to test the hypothesis that both hyperthermia and acidosis decrease the rate of ATP synthesis, but that athletic conditioning mitigates this loss of phosphorylation capacity. Isolated mitochondria were harvested from skeletal muscle before and after ...
Injury Patterns and Associated Demographic Characteristics in Children with a Fracture from Equines: A US National Based Study. Fractures often occur due to equestrian activities with injury patterns varying by age. The purpose of this study was to investigate in detail fracture patterns and associated demographics in children due to equine activities. Methods: The US National Electronic Injury Surveillance System was queried for all injuries with the consumer product code 1239 (horseback riding) from 2000 to 2023. Those <16 years old with fractures were extracted. Statistical analyses were performed with SUDAAN 11.0.01™ software to obtain national estimates. Results: There were an estimated 101,677 patients with a f...
Challenges for the veterinary profession: A grounded theory study of veterinarians’ experiences of caring for older horses. In Great Britain, owners are keeping their horses into increasingly older age, reflecting societal changes in human-animal relationships. The uptake of routine veterinary services is reported to reduce as horses age. Horse owners seek information regarding their animal's health from alternative sources before and/or following veterinary involvement. Information regarding the experiences and behaviours of veterinarians toward older horse health care provision is limited. Objective: This study sought to explore how veterinary care for the ageing horse is conceptualised and approached by veterina...
Reference intervals for equine fecal calprotectin and calprotectin:protein ratio and preliminary clinical evaluation in horses with colic and colitis. To establish the reference interval (RI) of fecal calprotectin (fCP) and fCP:protein ratio in the feces of healthy horses and demonstrate preliminary clinical utility for the quantification of intestinal inflammation. Methods: Feces were collected from healthy horses (n = 103) and horses with colic (n = 15) or colitis (n = 13). Feces were suspended in buffer to create fecal supernatant. Fecal calprotectin concentration was determined by ELISA, fecal total protein concentration was determined by bicinchoninic acid assay, and the fCP:protein ratio was calculated. Reference intervals for fCP and ...
Molecular Investigations of Babesia caballi from Clinically Healthy Horses in Southwestern Romania. is a tick-borne hemoparasite that causes equine piroplasmosis. It has a significant economic impact, decreasing performance and affecting animal welfare. This study aimed to identify DNA in the blood of horses from households in the southwestern and western regions of Romania. We included 310 animals, from which blood was collected via EDTA. To test the samples for the parasite genome, we used real-time PCR and conventional PCR. The prevalence of was 5.81% (18/310) in apparently healthy horses, suggesting that this parasite is enzootic in the regions studied, although veterinarians did not...
Changes in blood physiological and biochemical parameters and intestinal flora in newborn horses and mares with angular limb deformities. Angular limb deformities (ALDs) are a common skeletal development disorder in newborn foals. This condition affects the growth and development of foals and severely impacts their future athletic performance and economic value, causing significant financial losses to the horse industry. Placentitis, metritis, and severe metabolic diseases during mare pregnancy are significant causes of ALDs in newborn foals. It has been established that intestinal flora disorders can easily lead to inflammatory and metabolic diseases in the host. However, the incidence of ALDs in foals in Zhaosu County, Xinjian...
Niosomal nanocarriers loaded with artemisinin has potential to enhance the functional characteristics of cryo-preserved equine spermatozoa. Cryopreservation is a crucial method for the preservation of genetic materials. Nevertheless, this technique can have adverse effects due to cryo-oxidative damage. The primary objective of this study was to investigate the cryo-protective effects of niosomal nanocarriers loaded with artemisinin (NN-Art) on the functional attributes of equine spermatozoa. The parameters examined included sperm motility and kinematics through computer-assisted sperm analysis (CASA), plasma membrane integrity via the hypoosmotic swelling test, viability using the eosin-nigrosin staining technique, morphology with...
Phenotypic, Biochemical and Molecular Characterization of Streptococcus equi Isolates in Northern India. poses a significant threat to equine health globally. The bacteria causes strangles, a respiratory disease characterized by enlarged, abscessed lymph nodes, leading to airway obstruction. The bacterium, a Gram-positive, chain-forming, Lancefield group C β-hemolytic , is closely related to and distinction between these species is challenging. The present study focused on characterization of isolates from horses in northern India, aiming at elucidation of their sugar fermentation patterns. Nasal and nasopharyngeal swabs collected from different geographical regions of northern India, yieldin...
A Pilot Study to Assess the Safety and Efficacy of Umbilical Cord Blood-Derived Mesenchymal Stromal Cells for the Treatment of Synovitis in Horses. Synovitis is present before and during osteoarthritis in horses and can result in performance-limiting lameness. Twenty-four horses with lameness localized to the metacarpo-/metatarsophalangeal joint or a single joint of the carpus were enrolled in this study. We evaluated the response of intra-articular injection with 10 million activated (aMSC) or non-activated (naMSC) allogeneic equine umbilical cord blood-derived mesenchymal stromal cells (MSCs). Subjective and objective lameness was assessed on Days 0, 1, 21, and 42. The treatment injection was randomly assigned and performed following th...
The effect of intramuscular atipamezole on head height and sedation scores in detomidine-sedated horses. To assess the effect of two different doses of intramuscular atipamezole on head height (HH) in horses after sedation with detomidine. Methods: Randomized, blinded, triple crossover study. Methods: Eight healthy adult horses. Methods: Baseline HH was measured before detomidine (40 μg kg) was injected intravenously. HH was measured at 10 and 20 minutes after injection. Then, saline, atipamezole 60 μg kg (AT60) or 120 μg kg (AT120) was injected intramuscularly. HH measurements were repeated at 10 minutes intervals for 100 minutes. HH data were analyzed with a linear mixed model. Significance ...
Doping Control Analysis of Total Carbon Dioxide (TCO2) in Equine Plasma by Headspace Gas Chromatography-Mass Spectrometry (HS-GC/MS). The use of alkalinising agents prior to racing for manipulating performance in the horse has been identified since the 1990s. To mitigate the risk, an international threshold for available carbon dioxide in equine plasma based on analyses using the Beckman Synchron EL-ISE analyser was adopted in 1994 by the International Federation of Horseracing Authorities (IFHA) and revised from 37 to 36 mM in 2004. In 2009, the technical support for the above instrument was discontinued by its manufacturer. Based on the same measurement principle (i.e., ion selective electrode), the Beckman DxC600 analys...
Nutraceutical Supplement Mitigates Insulin Resistance in Horses with a History of Insulin Dysregulation During a Challenge with a High-Starch Diet. Insulin dysregulation (ID) is associated with an increased risk of laminitis which often necessitates the need for clinical intervention. To test the contention that the prophylactic supplementation of nutraceuticals could mitigate ID in susceptible horses, 16 mature horses with a history of ID were supplemented with either the placebo (n = 8) or nutraceutical (n = 8) once daily. Horses were housed in dry lots with ad libitum access to grass hay and fed a concentrate twice daily to provide 0.5 g starch/kg BW/meal. A combined glucose-insulin tolerance test was performed on all horses before and...
Seroepidemiological study of Neospora caninum in equids using c-ELISA in Erbil Province, Iraq. Equine neosporosis is an intracellular protozoan disease with a global distribution, affecting a diverse range of warm-blooded animals. Neospora caninum Dubey, Carpenter, Speer, Topper et Uggla, 1988 is associated with foetal loss, neurological disease and abortion in equids. No information was available regarding equine N. caninum infection among equids in Iraq. Thus, the aim of this study was to determine the prevalence rate of N. caninum in equines by using a competitive enzyme-linked immunosorbent assay (c-ELISA). A total of 329 blood samples randomly selected from equines, comprising 268 ...
Nutraceutical Supplement Mitigates Insulin Resistance in Horses with a History of Insulin Dysregulation During a Challenge with a High-Starch Diet. Insulin dysregulation (ID) is associated with an increased risk of laminitis which often necessitates the need for clinical intervention. To test the contention that the prophylactic supplementation of nutraceuticals could mitigate ID in susceptible horses, 16 mature horses with a history of ID were supplemented with either the placebo (n = 8) or nutraceutical (n = 8) once daily. Horses were housed in dry lots with ad libitum access to grass hay and fed a concentrate twice daily to provide 0.5 g starch/kg BW/meal. A combined glucose-insulin tolerance test was performed on all horses before and...
Changes in equine strongylid communities after two decades of annual anthelmintic treatments at the farm level. The aim of this study was to assess the changes in strongylid communities of domestic horses after two decades of regular anthelmintic treatments; the changes in prevalence and relative abundance of individual strongylid species and their contribution to the observed alterations were estimated. The study was conducted in 2023; data collected in 2004 were used for comparison; 39 horses from two farms in Ukraine (22 horses in 2004 and 17 in 2023) were examined. In total, 18,999 strongylid specimens were collected by in vivo diagnostic deworming method before (in 2004, 9119 specimens) and after (...
Smartphone-based ECG assessment of heart rhythm at birth in healthy foals born after spontaneous or induced parturition: is there a potential difference? Background- Subclinical electrophysiological derangements occur at birth in foals. Smartphone-based ECG (spECG) is practical tools to assess heart rhythm and was recently validated in foals. Objectives-To assess the heart rate (HR) and rhythm at birth in clinically healthy foals born after spontaneous and induced parturition using a spECG. Animals- Newborn healthy foals born after at term spontaneous (SF) or induced foaling (IF). Methods- Cohort study. In SF and IF groups, a spECG was performed immediately at birth (T0) and after 5 min (T5). SpECG tracings were selected for quality. HR was ma...
Fenestration of the maxillary septal bulla using different surgical approaches and endoscopy systems in horses: An ex vivo study. Sinusitis is common in horses. Sinoscopy is used for visualization of sinus cavities and can be used for diagnostic and therapeutic purposes. In this surgical procedure, a larger chamber is created and communication with other sinus compartments facilitated. To compare the applicability of different surgical approaches and rigid endoscopy systems for sinus inspection and fenestration of the maxillary septal bulla, and to examine the impact of different lens angles on the effectiveness of the procedure. Six chemically preserved cadaveric equine heads were used. Frontal and caudal maxillary port...
A study on the measurement of the reference range of the whole blood viscosity in Thoroughbred horses. This study aimed to measure the whole blood viscosity (WBV) in racehorses using a new viscometer and establish reference values, as well as to investigate the correlation between the WBV and the haematological parameters and serum chemistry. WBV measurements were conducted on 51 Thoroughbred horses using a novel U-shaped scanning capillary-tube viscometer. The reference values for the WBV were determined at various shear rates ranging from 1 s to 1 000 s. Correlation analyses were performed to examine the correlation between the WBV and the haematological and serum chemistry parameters. The fi...
Horse Diagnosis and Triage Accuracy of GPT-4o. Animal owners may increasingly rely on large language models for gathering animal health information alongside internet sources in the future. This study therefore aims to provide initial results on the accuracy of ChatGPT-4o in triage and tentative diagnostics, using horses as a case study. Ten test vignettes were used to prompt situation assessments from the tool, which were then compared to original assessments made by a veterinary specialist for horses. The most probable diagnosis suggested by ChatGPT-4o was found to be quite accurate in most cases, with the urgency to contact a veterinari...
Effect of phenylbutazone administration on the enteroinsular axis in horses with insulin dysregulation. Phenylbutazone is prescribed for laminitis-associated pain and decreases glucose and insulin responses to an oral glucose test (OGT) in horses with insulin dysregulation (ID). Objective: Investigate the effect of phenylbutazone administration on the enteroinsular axis in horses. Methods: Sixteen horses, including 7 with ID. Methods: Randomized cross-over study design, with horses assigned to treatment with phenylbutazone (4.4 mg/kg IV q24h) or placebo (5 mL 0.9% saline). On Day 9 of treatment, an OGT was conducted, followed by a 10-day washout period, administration of the alternative trea...
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