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Disorders of Water and Tissue Perfusion (Diabetes Insipidus, Renin-Angiotensin-Aldosterone Axis, and Anhidrosis).
The Veterinary clinics of North America. Equine practice    August 20, 2026   S0749-0739(26)00058-1 doi: 10.1016/j.cveq.2026.07.011
Palmer AT.This review highlights disorders of water and tissue perfusion in equids, specifically diabetes insipidus, the renin-angiotensin-aldosterone axis, and anhidrosis. The differences in renal versus central diabetes insipidus is discussed, as well as diagnosis and treatment of diabetes insipidus in equids. The physiology of the renin-angiotensin-aldosterone axis is reviewed, and recent research in the role of the renin-angiotensin-aldosterone axis in equids in certain states is emphasized. The proposed pathophysiology of anhidrosis in horses is discussed, as well as potential therapies.
Adaptive variation in butyrylcholinesterase-influenced lipid metabolism during horse domestication.
Cell reports    August 20, 2026   Volume 45, Issue 9 117879 doi: 10.1016/j.celrep.2026.117879
Zhang Y, Liu X, Wang X, Yu Y, Jia Y, Pu Y, Ma Y, Orlando L, Jiang L.Lipid metabolism influences horse athletic performance, yet its genetic basis remains unclear. Here, we investigate the genetic basis of lipid metabolic traits by quantifying key metabolic parameters and sequencing the genomes of 298 horses. We identify a missense mutation (ECA19:9,198,989, G>C) in the BCHE gene that is strongly associated with lipid metabolism, especially butyrylcholinesterase (BChE) activity. The "C" allele is associated with increased BChE activity and reduced intracellular triglyceride levels, hepatic adiposity, and overall fat mass, highlighting a central role for BCHE in...
Ostium-specific equine pulmonary vein myocardial sleeve gross anatomy and structural evidence of interatrial myocardial continuity with potential implications for ablation strategies.
Equine veterinary journal    August 20, 2026   doi: 10.1002/evj.70309
Ibrahim L, Van Hooydonk I, Cornillie P, van Loon G.Pulmonary vein (PV) myocardial sleeves (MSs) harbour an arrhythmogenic substrate for atrial fibrillation. However, equine-specific data on MS distribution and wall thickness are limited yet essential for developing ablation strategies. In humans, posterior interatrial connections can compromise right-sided PV isolation. Objective: To study equine PV MS distribution, quantify ostial/branch diameters, antral lengths, characterise MS distal edge morphology, measure wall thickness and explore an interatrial myocardial continuity between the MSs of caudal branches draining through ostium III (PV II...
[Puncture wounds of the equine hoof – a retrospective study of 96 cases – Part 2: Management and prognosis].
Tierarztliche Praxis. Ausgabe G, Grosstiere/Nutztiere    August 20, 2026   Volume 54, Issue 4 244-252 doi: 10.1055/a-2794-3232
Herschel TL, Winter K, Scharner D.Puncture wounds are a common and potentially life-threatening injury in equine veterinary practice. The aim of this study was to systematically analyze data from horses presenting to the clinic with a puncture wound. Unassigned: A retrospective study was conducted on patient data from horses with a puncture wound in the period from September 2008 to August 2024. Analyzed data included medical management and surgical treatment, complications, duration and costs of hospitalization, short-term survival rate and treatment success. Unassigned: A total of 96 horses met the inclusion criteria. Seven ...
Challenges for interpreting results of antimicrobial susceptibility testing for treating infections of foals with Rhodococcus equi.
Equine veterinary journal    August 20, 2026   doi: 10.1002/evj.70312
Seeger MG, Gressler LT, Huber L, Alvarez-Narvaez S, Cargnelutti JF, Bordin AI, Lawhon SD, Cohen ND.Rhodococcus equi is a facultative intracellular pathogen and a major cause of pneumonia in foals worldwide. The standard treatment for affected foals is a combination of a macrolide with rifampicin. The widespread use of this combination has led to the emergence of multidrug-resistant (MDR) strains of R. equi. Consequently, antimicrobial susceptibility testing is essential for guiding treatment of rhodococcal pneumonia. Unfortunately, clinical breakpoints for macrolides and other antimicrobials against R. equi for foals are lacking, thereby complicating clinical interpretation of in vitro resu...
Relationship Between Feed Olfactory Exploration and Consumption in Horses.
Animals : an open access journal from MDPI    August 20, 2026   Volume 16, Issue 16 2599 doi: 10.3390/ani16162599
Wnuk E, Janicka W, Łuszczyński J, Wojtyniak A, Jagusiak W, Stachurska A.The aim of the study was to evaluate the relationship between horses' behaviour during olfactory exploration and following consumption of the same food containing herbs, either previously exposed to the herb odour or not. Twenty horses' responses to 14 herbs were compared in a smelling test, when the horses sniffed a herb, and after 20 min a consumption test, when they consumed oats mixed with the same herb. Before the tests, the horses were exposed to the scent of seven herbs, whereas the remaining seven herbs were non-pre-exposed. The results show that horses consumed oats with herbal additi...
Mesenchymal stem cells in veterinary clinical practice: Evidence from naturally occurring diseases.
Veterinary journal (London, England : 1997)    August 20, 2026   Volume 320 106837 doi: 10.1016/j.tvjl.2026.106837
Zayed M, Jeong BH.Over the past two decades, the use of mesenchymal stem cells (MSCs) in veterinary medicine has expanded rapidly, although the clinical evidence remains in its early stages. This review discusses clinical studies involving client-owned animals with naturally occurring diseases in which MSCs or MSC-derived extracellular vesicles (EVs) were used as treatments. It covers musculoskeletal disorders, including osteoarthritis, tendon and ligament injuries, and bone diseases; soft-tissue and oral mucosal conditions; neurological disorders; ophthalmic diseases; and internal medicine disorders, such as i...
Genetic parameter estimation of novel international show-jumping indicators in horses.
Veterinary and animal science    August 19, 2026   Volume 33 100829 doi: 10.1016/j.vas.2026.100829
Ablondi M, Danese T, Moretti R, Asti V, Ozella L, Sabbioni A, Valle E, Summer A.Genetic improvement of show-jumping competition results has a clear breeding goal which is to produce horses that can repeatedly clear technically demanding courses at maximum height, resulting in placement results. However, how to achieve this, and thus how to accurately choose breeding candidates, is far from straightforward due to the heterogeneity of competition outcomes. In this study, we analyzed Fédération Équestre Internationale (FEI) competition records from 19,232 horses together with pedigree data to evaluate novel phenotypes suitable for international genetic evaluations. Tradit...
Epidemiological study of strongyle infections in equines in Egypt: prevalence and risk factors.
Frontiers in veterinary science    August 19, 2026   Volume 13 1901312 doi: 10.3389/fvets.2026.1901312
Selim A, Marzok M, Gattan HS, Alruhaili MH, Ismail H, Almubarak AI, Hereba AM.Equine strongylosis is one of the most prevalent gastrointestinal parasitic diseases affecting horses and donkeys worldwide, leading to reduced health, productivity, and working performance. This study aimed to determine the prevalence of gastrointestinal strongyle infection and identify associated risk factors among equines in three Egyptian governorates. Unassigned: A cross-sectional study was conducted on 540 horses and donkeys. Fresh fecal samples were collected and examined using the magnesium sulfate flotation technique for the detection of strongyle eggs. Associations between infection ...
Transforming retraining: Supporting racehorses to have successful second careers.
PloS one    August 19, 2026   Volume 21, Issue 8 e0355509 doi: 10.1371/journal.pone.0355509
Williams JM, Jordan S, Friend L, Kay E, Edmunds M, Nankervis K, Cheung J, Tabor G.Optimizing long-term welfare outcomes for Thoroughbred racehorses following retirement from racing is a priority across the global horse racing industry. Following their racing career, horses are required to adapt to a markedly different lifestyle, involving substantial physical, behavioural, and mental adjustment. This study consulted experienced retrainers to identify factors that inform successful retraining and transition of former racehorses to promote positive lifelong outcomes beyond racing. An online survey of 100 global stakeholders experienced in retraining former racehorses explor...
Extracellular matrix and microvascularization regulatory genes in the mare placenta.
Research in veterinary science    August 19, 2026   Volume 211 106372 doi: 10.1016/j.rvsc.2026.106372
Dos Santos MIM, de Carvalho IB, Vasconcelos M, Diniz P, Alpoim-Moreira J, Fradinho MJ, Alexandre-Pires G, Bettencourt E, Silva E, Ferreira-Dias G.In the mare placenta, molecular mechanisms regulating extracellular matrix (ECM) collagen deposition and vascularization are not fully understood. This study evaluated: (i) gene transcription and expression of enzymes regulating collagen deposition (matrix metalloproteinases - MMP2, MMP9), and their inhibitors (TIMP1, TIMP2); (ii) gene transcription of vascular endothelial growth factor (VEGF-A) and its receptors VEGF receptor 1 and 2 (VEGFR1 and VEGFR2); and (iii) methylation pattern of these genes promoter regions (MMP2, TIMP1, TIMP2), in both placental horns (pregnant-PH and non-pregnant-NP...
Alpha-2-Macroglobulin-Enriched Plasma Modulates Inflammatory and Proteolytic Pathways in Experimental Equine Musculoskeletal Models.
Animals : an open access journal from MDPI    August 19, 2026   Volume 16, Issue 16 2595 doi: 10.3390/ani16162595
Gugliandolo E, Franco GA, Biondi V, De Luca M, Van Reusel Y, Tosto F, Inferrera F, Catone G, Spaas JH.Joint inflammation and extracellular matrix degradation are major contributors to the development of equine osteoarthritis and reduced athletic performance. Alpha-2-macroglobulin is a naturally occurring broad-spectrum inhibitor of proteases and inflammatory mediators that has emerged as a promising orthobiologic therapy. This study investigated the anti-inflammatory and matrix-protective effects of alpha-2-macroglobulin-enriched plasma in complementary in vitro and ex vivo equine models. Primary equine chondrocytes and synoviocytes isolated from healthy horses were stimulated with interleukin...
Effects of pulsed electromagnetic therapy on the major hematological and biochemical parameters in horses.
The Journal of veterinary medical science    August 19, 2026   doi: 10.1292/jvms.26-0089
Pongrácz L, Bouwer W, Bartha T, Kiss DS, Németh K, Szabó B, Tóth I.Pulsed electromagnetic field (PEMF) therapy, a commonly used supplementary treatment in the horse industry, shows promise in enhancing circulation, reducing inflammation, and supporting cellular repair; however, its effects on equine physiology remain unclear. Limited research and inconsistent protocols create uncertainty about its efficacy and safety in horses. Our study evaluates the short-term effects of PEMF on hematological and biochemical parameters in horses. Five active sport horses underwent PEMF therapy for five consecutive days using a full-body blanket at specific frequencies. Bloo...
Genetic variants of EcPV2 E6 and E7 in equine genital and oronasal squamous cell carcinoma.
Equine veterinary journal    August 19, 2026   doi: 10.1002/evj.70311
Jenner M, Brandt S.Since its discovery in 2008, equine papillomavirus type 2 (EcPV2) has been detected in up to 100% of equine genital and up to 40% of equine oronasal squamous cell carcinomas (SCCs). Preliminary sequence data point to the existence of EcPV2 E6 and E7 oncogene variants compared to the British reference sequence from 2008. Objective: To Identify E6 and E7 sequence variations in EcPV2-positive tumours of horses from Continental Europe and Iceland. Methods: Cross-sectional study. Methods: EcPV2 E6 and E7 were amplified from DNA of 60 EcPV2-positive SCCs/SCC precursor lesions. Amplicons were gel-pur...
A color-coded atlas of the cortical surface anatomy of the equine brain.
Frontiers in veterinary science    August 19, 2026   Volume 13 1896929 doi: 10.3389/fvets.2026.1896929
Al Aiyan A, Altamimy S, Almansoury M, Balan R.The horse has a highly gyrencephalic cerebrum; however, detailed references of equine cortical surface anatomy remain limited, and terminology inconsistencies continue to complicate comparative, clinical, and educational applications. This research focused on creating a standardized, high-resolution, color-coded atlas of equine brain sulci and gyri, based on the Nomina Anatomica Veterinaria (NAV). Unassigned: Brains from ten neurologically normal horses were examined. Following fixation and dissection, the sulci and gyri of the lateral, dorsal, rostral, and medial surfaces were documented, col...
Guttural pouch tympany or empyema in 38 ٍStraight Egyptian Arabian foals: clinical presentation, diagnostic features and outcome.
BMC veterinary research    August 19, 2026   Volume 22, Issue 1 482 doi: 10.1186/s12917-026-05810-3
Abu-Seida AM, Asfour HAE, Abdulredha MAH, Derbala MK.As a breed, Straight Egyptian Arabian horses are susceptible to many disorders that mostly affect the head, such as guttural pouch (GP) tympany and empyema. This retrospective study evaluated the findings of clinical examination, ultrasonography, endoscopy, laboratory analyses and outcome of treatment of 38 Straight Egyptian Arabian foals with GP tympany and empyema. Methods: Data from medical records of foals diagnosed with GP tympany or empyema over a 2-year period (2024-2025) were reviewed. Foals with verified GP tympany or empyema who had complete medical records and had not previously rec...
Measuring Activity-Rest Condition by Using Two Different Accelerometer Devices in Trained and Retired Horses.
Animals : an open access journal from MDPI    August 18, 2026   Volume 16, Issue 16 2570 doi: 10.3390/ani16162570
Giannetto C, Aragona F, Fazio F, Giudice E, Zumbo A, Piccione G.To advance technological applications in animal welfare assessment, this study evaluated resting activity as a component of total locomotor activity (TLA) in horses using two different accelerometer devices: a collar-mounted device containing a single-axis accelerometer that records physical movement, and a three axes accelerometer that classifies the measured physical activity into nine different activities. Ten clinically healthy Italian saddle horses were enrolled in the study and divided into two groups on the basis of their lifestyle. Group A consisted of regularly trained horses housed c...
From Diet to Disease: The Role of the Gut Microbiome and Microbial Metabolites in Horses.
Veterinary sciences    August 18, 2026   Volume 13, Issue 8 823 doi: 10.3390/vetsci13080823
Wu Y, Ma Y, Zan Y, Bai X, Li J, Li H.The equine gastrointestinal microbiome plays an essential role in digestion, energy metabolism, immune regulation, and maintenance of intestinal homeostasis. Increasing evidence suggests that microbial-derived metabolites provide a functional link between diet, the microbiome, and host physiology. This narrative review summarizes current knowledge on how dietary factors, including structural carbohydrates, non-structural carbohydrates, protein, and lipids, influence microbial function and metabolite production in horses. Relevant publications available up to June 2026 were identified through s...
An experimental multiplex PCR/RT-PCR for detection of the main viruses associated with equine neurological disease.
Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology]    August 18, 2026   Volume 57, Issue 1 241 doi: 10.1007/s42770-026-02065-w
Scherer SO, Silva Júnior JVJ, Pedroso NH, Dionisio IF, Weiblen R, Flores EF.Viral neurological infections are important causes of morbidity and mortality in horses worldwide. Herein, we describe an end-point multiplex PCR/RT-PCR for simultaneous and differential detection of major equine encephalitis-related agents: rabies virus (RABV), equine herpesvirus type 1 (EHV-1), alphaviruses [Venezuelan equine encephalitis virus (VEEV), Eastern equine encephalitis virus (EEEV), Western equine encephalitis virus (WEEV) and Madariaga virus (MADV)] and flaviviruses [West Nile virus (WNV), Saint Louis encephalitis virus (SLEV), Rocio virus (ROCV) and Japanese encephalitis virus (...
Horses with pituitary pars intermedia dysfunction have an altered fecal short-chain fatty acid profile.
American journal of veterinary research    August 18, 2026   1-7 doi: 10.2460/ajvr.26.05.0223
Wang W, Nitert MD, Gobius S, Gonzalez-Astudillo V, Bertin FR.Pituitary pars intermedia dysfunction (PPID) is a prevalent endocrine disease in older horses sharing pathogenetic features with Parkinson disease, including dopaminergic neurodegeneration and α-synuclein aggregation. This study was conducted to determine whether horses with PPID exhibit changes in short-chain fatty acid (SCFA) profiles as described in Parkinson disease, providing further evidence for involvement of a microbiota-gut-brain axis in the pathogenesis of PPID. Unassigned: Prospective case-control study including 22 horses > 12 years of age. Diagnosis of PPID was based on clinical ...
The 3Fs as conditions of being: relational ontology and equine welfare in disaster response and reconciliation.
Frontiers in veterinary science    August 18, 2026   Volume 13 1922532 doi: 10.3389/fvets.2026.1922532
Grinde D.Disaster relief work requires the collaboration of many stakeholders and can be viewed through a One Health lens, emphasising transdisciplinarity and an openness to different ways of knowing as well as an appreciation of the interdependence of human, animal, environmental health, and welfare. This perspective piece provides an autoethnographic account of a wildfire response in Western Canada in which a herd of free-ranging horses was rescued outside of conventional disaster management protocol. Through lived experience, the convergence between equine welfare, reconciliation, and relational ont...
In Vivo Metabolite Formation and In Vitro Cytochrome P450-Mediated Metabolism of Vonoprazan in Horses.
Metabolites    August 18, 2026   Volume 16, Issue 8 584 doi: 10.3390/metabo16080584
Morales CJ, Mckemie DS, Neupane JB, Knych HK. Vonoprazan is a potassium-competitive acid blocker with potential for the treatment of equine gastric ulcer syndrome. Vonoprazan metabolic pathways in horses have not been characterized. This study aimed to identify vonoprazan metabolites following oral administration and to determine the metabolic enzymes responsible for their metabolism using in vitro models. Six healthy adult Thoroughbred horses received vonoprazan (0.5 and 1 mg/kg PO) in a randomized crossover design. Plasma concentrations of vonoprazan-N-oxide (M-I) and vonoprazan-nitrone (M-III) were quantified using a validated liquid...
Semi-extensive management system drives lower prevalence of equine orodental disorders.
Frontiers in veterinary science    August 18, 2026   Volume 13 1827412 doi: 10.3389/fvets.2026.1827412
Kunz JR, Peres Mendes R, Granella MCS, Hartl B, de Souza AF, Fonteque JH, Kau-Strebinger S.The prevalence of orodental disorders in horses kept under different management systems is lacking. More detailed knowledge is needed to support targeted therapeutic and prophylactic approaches, as these conditions play a crucial role in maintaining equine health and welfare. This study aimed to compare the prevalence of orodental disorders in horses raised, kept, and fed under extensive, semi-extensive, or intensive management systems. Unassigned: Sixty-nine clinically healthy adult crossbred horses with no history of dental treatment were examined, with 23 horses included in each study group...
First-time description of MHC diversity in Straight Egyptian Arabian horses using immune-linked microsatellite markers.
Frontiers in immunology    August 17, 2026   Volume 17 1859977 doi: 10.3389/fimmu.2026.1859977
Alkhamees ASA, Cavalleri JV, Hammer SE.Understanding the immunogenetic structure of the major histocompatibility complex (MHC) in Arabian horses helps to clarify the population health structure-related phenotypes of this historically influential breed. Straight Egyptian (SE) Arabian horses, which fall under , are of global value but are limited in number, raising concerns about their distribution and the genetic diversity associated with immunity. In this study, we examined 57 Egyptian Arabian horses from two breeding programs: one in Germany (AR-DE) and the other in Qatar (AR-QA). Sixteen polymorphic intra-MHC microsatellite marke...
Equine Fungal Keratitis due to Cladorrhinum bulbillosum.
Veterinary ophthalmology    August 17, 2026   Volume 29, Issue 5 e70249 doi: 10.1111/vop.70249
Hamilton A, Lacy L, Scherrer N.To describe the case details and treatment of an equine fungal keratitis case caused by Cladorrhinum bulbillosum. Methods: A 14-year-old Bashkir Curly gelding with a complicated corneal ulcer of the left eye. Methods: Corneal cytology was performed, and intraoperative samples were collected for polymerase chain reaction and for aerobic and mycologic cultures. Under general anesthesia, an inferior eyelid subpalpebral lavage system (SPL) was placed to facilitate postoperative therapy. Anterior stromal keratectomy was performed followed by cryotherapy of the keratectomy bed. A biological scaffold...
Leishmania spp. infection in horses in an endemic area of canine leishmaniosis (north-western Algeria).
Research in veterinary science    August 17, 2026   Volume 211 106365 doi: 10.1016/j.rvsc.2026.106365
Bia T, Marteles-Aragüés D, Sánchez C, Bernardo L, Carrillo E, Solana JC, Manseur H, Zait H, Lafri I, Villanueva-Saz S, Moreno J.Leishmaniosis is a parasitic disease caused by obligate intracellular protozoa of the genus Leishmania. It affects humans, canids, and rodents in endemic areas and is transmitted through the bites of infected sand flies. This study aimed to estimate the prevalence of equine leishmaniosis in horses from Tiaret Province, northwestern Algeria, an area endemic for canine leishmaniosis, and to identify the main risk factors associated with infection. The study included 75 local Barb horses and employed molecular and serological techniques for the detection of Leishmania infection. Among the sampled...
Epidural 0.125% ropivacaine is safe but insufficient for induced tibiotarsal joint pain.
Equine veterinary journal    August 17, 2026   doi: 10.1002/evj.70298
Boesch JM, Perkins GA, Todd-Donato AB, Colbath AC.Epidural injection of a low concentration of the local anaesthetic ropivacaine produces analgesia without neurological deficits or ileus in people. Objective: To determine if epidural 0.125% ropivacaine mitigates induced hindlimb lameness in horses while preserving neurological function and gastrointestinal (GI) motility. Methods: Randomised, blinded, controlled, crossover study. Methods: Eight healthy, sound horses underwent two treatments in random order, separated by at least 3 weeks: epidural saline or epidural ropivacaine. For each treatment, an epidural catheter was inserted at the fir...
Factors affecting veterinary perception of the prevalence of back pain and dysfunction in dogs and horses.
Frontiers in veterinary science    August 17, 2026   Volume 13 1857696 doi: 10.3389/fvets.2026.1857696
Lane D, Haussler KK.The prevalence of back pain in humans has been extensively reported, but in dogs it is unknown. In horses, research on the prevalence of back pain exists, but with reports ranging from 1% to 94%, indicating a data deficiency. Unassigned: Veterinarians were surveyed about their perception of the prevalence of back pain and dysfunction in dogs and horses for 6 different clinical scenarios. The respondents' education background and physical examination techniques were recorded. Unassigned: Perceptions of the prevalence of back pain and dysfunction varied widely both within and between education g...
Correlation between microbial communities, metabolites, and bioactivities in fermented mare’s milk revealed by metagenomics and metabolomics.
Food microbiology    August 17, 2026   Volume 141 105278 doi: 10.1016/j.fm.2026.105278
Huang X, Luo R, Wang Y, Zheng W, Lu X, Liu G, Abdulla P, Niu R, Tu Y, Xing J, Hong J, Zheng W, Liu J.Koumiss exhibits various functional properties, including antioxidant, hypoglycemic, and antihypertensive effects; however, natural fermentation is characterized by an uncontrollable microbial community structure, significant fluctuations in product quality, and a lack of specialized fermentation agents. The mechanisms underlying the links between microbial communities, functional metabolites, and bioactivity in natural and inoculated fermentation systems remain unclear. Therefore, this study employed bioactivity assays, metagenomics, and non-targeted metabolomics to systematically analyze dif...
Prevalence, distribution, and associated risk factors of major equine endoparasitic infections in South Gondar Zone, Northwest Ethiopia.
Veterinary and animal science    August 17, 2026   Volume 34 100821 doi: 10.1016/j.vas.2026.100821
Alemayehu H, Alemneh T, Birhan M, Seyoum Z, Baylie M.Endoparasites remain major constraints on equine health and productivity in Ethiopia; however, epidemiological data from northwestern regions are limited. This study investigated the occurrence, parasite diversity, infection intensity, and risk factors associated with endoparasite infections in equines in northwestern Ethiopia. A cross-sectional study was conducted using coprological examinations complemented by postmortem inspections. Standard parasitological techniques were employed, and multivariable logistic regression analysis was used to identify predictors of infection. Data were analyz...