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Topic:Disease Treatment
Disease treatment in horses encompasses a range of medical interventions and management strategies aimed at addressing various health conditions affecting equine species. These treatments can include pharmacological approaches, such as the administration of antibiotics, anti-inflammatory drugs, and antiparasitic medications, as well as non-pharmacological methods like physical therapy, dietary adjustments, and surgical procedures. The selection of appropriate treatments depends on the specific disease, its severity, and the individual needs of the horse. This topic brings together peer-reviewed research studies and scholarly articles that explore the efficacy, safety, and advancements in therapeutic options for equine diseases, providing insights into best practices and emerging trends in equine veterinary medicine.
Efficacy of 0.5% Tretinoin in the Treatment of Equine Aural Plaques. Equine aural plaques are a benign form of auricular papillomatosis caused by equine papillomavirus. Despite the efficacy of 5% imiquimod cream, a marked local reaction is frequently observed during therapy, often requiring sedation before application. Objective: The aim of this study was to evaluate the efficacy and potential adverse effects of 0.5% topical tretinoin in the treatment of equine aural plaques. We hypothesised that tretinoin would be effective, with fewer adverse effects compared to imiquimod. Methods: The study included 10 horses of both sexes, aged between 7 months and 15 y...
Miscellaneous Equine Liver Conditions. Miscellaneous equine liver conditions not covered in other chapters include chronic active hepatitis, Tyzzer's disease, seasonal idiopathic hepatitis, neoplasia, and idiopathic persistent hyperbilirubinemia. Chronic active hepatitis refers to inflammatory and fibrotic liver disease with an unknown cause. Treatment is aimed at reducing inflammation. Tyzzer's disease is caused by Clostridium piliforme infection and causes acute necrotizing hepatitis in foals. Successful treatment with antimicrobial therapy and supportive care is rare. Seasonal idiopathic hepatitis is a winter disease of Midweste...
Topical betulinic acid for treatment of equine melanoma and sarcoid. Betulinic acid, a natural pentacyclic triterpenoid, has demonstrated anti-inflammatory and anti-tumor properties in vitro, including activity against equine melanoma and sarcoid. However, there is limited in vivo evidence evaluating its clinical efficacy. The objective of this study was to assess the safety and efficacy of a compounded 1% betulinic acid cream for the treatment of equine cutaneous melanoma and sarcoid. Unassigned: This prospective, randomized, double-blinded, placebo-controlled clinical trial enrolled client-owned horses with melanoma or sarcoid tumors. Horses received either a...
Combined PRP and CCP Therapy Suppresses Inflammation and Protects Cartilage in Post-Traumatic Osteoarthritis. This study aimed to evaluate the therapeutic effects of platelet-rich plasma (PRP) and Cervus and Cucumis polypeptide (CCP) injections in rats with post-traumatic osteoarthritis (OA). The model was established by transection of the anterior cruciate ligament, and the animals were subsequently treated with PRP and CCP. Articular cartilage degeneration was assessed through gross morphological observation, histopathological staining, and a standardized scoring system. Concurrently, pain-related behaviors, joint swelling, levels of inflammatory cytokines, and markers associated with extracellular ...
Protective effects of adiponectin receptor agonists against equine lamellar endoplasmic reticulum stress. Lamellar endoplasmic reticulum (ER) stress occurs in hyperinsulinemia-associated and sepsis-related laminitis. Adiponectin is associated with reduced laminitis risk and inhibits ER stress in other species. Objective: To induce ER stress in ex vivo equine lamellar cells using pharmacological agents. To determine whether co-treatment with adiponectin receptor agonists (ARAs) reduces ER stress. Methods: In vitro. Methods: Lamellar cells from n = 4-5 horses were treated with tunicamycin or thapsigargin (10-1000 nM) for 2-24 h. ER-stressed cells were co-treated with full-length adiponectin ...
Proteomic signatures of equine dental tooth tissues in ageing and disease. Ageing and dental disease in horses lead to structural and functional deterioration of dental tissues, yet their molecular signatures remain poorly characterised. Understanding how these processes alter the protein composition of enamel, dentin, cementum and pulp is essential for improving equine oral health and identifying biomarkers of degeneration. Objective: To characterise the proteomic profiles of equine dental tissues and determine age- and disease-associated changes, with the aim of identifying proteins consistently altered across conditions. Methods: Ex vivo proteomic study. Methods: ...
Clinical Outcomes Following Intra-Articular Administration of Autologous Muscle-Derived Mesenchymal Stem Cells in Horses with Chronic Osteoarthritis: A Prospective Open-Label Study. Mesenchymal stromal/stem cells (MSCs) are increasingly investigated as intra-articular therapies for equine osteoarthritis (OA), although most studies have focused on allogeneic or combination-based approaches. Evidence supporting the use of autologous MSCs as a stand-alone treatment remains limited. The present study evaluated the safety and clinical evolution following intra-articular administration of autologous muscle-derived MSCs (mdMSCs) in horses with naturally occurring chronic OA. Thirteen horses with confirmed clinical disease were included. Each affected joint received a single inje...
Mitochondrial dysfunction in equine ageing: Current evidence and clinical implications for geroscience. Ageing is a complex biological process affecting a growing geriatric human and equine population worldwide. Mitochondrial dysfunction is considered one of the hallmarks of ageing, representing a multifaceted process. This review synthesises current findings on mitochondrial dysfunction in aged equines, drawing parallels with human medicine and identifying current knowledge gaps. Integrating findings from human and equine research may bridge existing challenges and offer new opportunities, including the development of novel translational models for ageing research. Furthermore, it highlights th...
Short-term clinical responses in horses and ponies treated with canagliflozin: A clinical field study. Treatment with the sodium-glucose co-transporter 2 (SGLT2) inhibitor canagliflozin in insulin dysregulated (ID) horses has shown promising results in randomised clinical trials. Larger field studies are needed to further evaluate treatment responses and potential adverse effects under real-world conditions. Objective: To assess the short-term effects of canagliflozin on postprandial glucose and insulin responses in client-owned horses and ponies with ID using a single-sample feed-challenge test (FCT), and to characterise treatment-associated changes in bodyweight, liver enzyme activities, and ...
Bexagliflozin controls hyperinsulinemia in horses with naturally occurring insulin dysregulation: a placebo-controlled crossover trial. To evaluate bexagliflozin for insulin control in horses with naturally occurring insulin dysregulation. Unassigned: In a randomized, placebo-controlled crossover study, 10 client-owned Arabian horses with hyperinsulinemia (> 30 μIU/mL) were treated with bexagliflozin (0.03 mg/kg, PO, q 24 h; BEXA03) or placebo control for a 10-day treatment period, crossing over after a 4-day washout. After a further 12-day washout, 8 of the horses were treated with bexagliflozin (0.06 mg/kg, PO, q 24 h; BEXA06) for an additional 7-day treatment period. Oral sugar tests were performed at the beginning of e...
A novel flowable calcium silicate cement for endodontic therapy in equine teeth. Equine endodontic treatment for apical infections is performed infrequently due to anatomical and accessibility challenges of equine cheek teeth. However, the alternative of extraction is not without risk and lifelong implications for the horse. Mineral trioxide aggregate (MTA), a calcium silicate cement (CSC), has been used successfully in human dentistry for decades. MTA and other CSCs demonstrate excellent biocompatibility with favourable antimicrobial and physicochemical properties. These characteristics may support their application as an alternative filling material when used in equine e...
Treatment of ventricular arrhythmias with oral sotalol in four horses. Sustained ventricular arrhythmias (VAs) in horses can require medical intervention. Prompt pharmacological treatment is indicated when the arrhythmia leads to hemodynamic or electrical instability. Established antiarrhythmic treatment of VA in horses includes lidocaine and magnesium, administered parenterally. Other antiarrhythmic agents are used; however, concerns regarding adverse effects, financial restrictions, logistics of administration, and lack of access often limit their use. While anecdotal reports of oral administration of sotalol for treatment of VA in horses exist, sotalol has pri...
Allogeneic Platelet-Rich Gel Supernatant Reprograms the Cytokine and Growth Factor Microenvironment in an Equine In Vitro Inflammatory Tendon System. Tendinopathy involves a dysregulated inflammatory microenvironment in which cytokines, growth factors (GF) and extracellular matrix components interact dynamically. Platelet-rich plasma (PRP) is widely used as a regenerative therapy, but its mechanisms of action in inflamed tendon remain unclear. This study evaluated whether platelet-rich gel supernatant (PRGS) reprograms the inflammatory-anabolic mediator network in an equine in vitro tendon explant system stimulated with lipopolysaccharide (LPS). Tendon explants were cultured under six experimental conditions, including non-stimulated contro...
Additional Evidence Fails to Associate Variation in KCNE4 With Equine Anhidrosis. A prior genome-wide association (GWA; N = 200) including Thoroughbreds and stock horses implicated chromosome 6 (NC_009149.3) in owner-reported equine anhidrosis. A missense variant in KCNE4 (NC_009149.3:g.11813731A>G) was proposed as a risk allele, although its association with anhidrosis was not reported. Variant annotation and protein modelling in the original study suggested the G allele conferred risk. We reported no association of the G allele with anhidrosis in 50 horses phenotyped by an intradermal terbutaline sweat test (ITST); all horses produced sweat regardless of genotype. ...
Glanders: Past, Present and Future of a Neglected Zoonosis as a Threat in Veterinary and Human Health. Burkholderia mallei is the causative agent of glanders, a serious zoonotic disease of major concern for both animal and human health. This highly contagious and potentially fatal bacterium is always classified as a biothreat agent. In this review, we covered a comprehensive overview of glanders, including the biology of the pathogen, epidemiology, pathogenesis, diagnosis, control strategies and ongoing eradication programs in Eurasia. We also summarized human case reports, differential diagnosis, treatment and organism's antimicrobial properties. The section on vaccine development is among the...
Multiple strategies, one mission: mesenchymal stromal cell-based mechanisms of action in osteoarthritis. Osteoarthritis (OA) is a cross-species, multifactorial joint disease characterized by the progressive degeneration of articular cartilage, morphological remodeling of the subchondral bone, and inflammatory and fibrotic changes of the joint capsule. These alterations arise from chronic, often subclinical, inflammatory processes and dysregulated cellular homeostasis, leading to profound shifts in the cellular and extracellular composition of the joint organ. Although the mechanisms driving persistent inflammation are only partially understood, their impact on all joint-associated tissues is well...
Overview of the Current Osteoarthritis Treatment in Veterinary Medicine and Future Directions. Osteoarthritis (OA) is a chronic and progressive joint disease that can cause permanent loss of joint function. OA is highly prevalent in horses, dogs, and cats, affecting different joints and leading to reduced mobility and chronic pain. Different risk factors for animal OA have been identified, including trauma and breed. Inflammation is a hallmark of the disease, with various underlying mechanisms such as cyclooxygenase and metalloproteinase activation, nerve growth factor, cytokine, and prostaglandin upregulation, among others. Although disease complexity makes OA difficult to treat, eno...
Successful Use of Vincristine in a Quarter Horse Gelding with Immune-Mediated Thrombocytopenia. This case reports the successful use of vincristine in a Quarter Horse with presumed immune-mediated thrombocytopenia. A 15-year-old Quarter Horse gelding presented for a pinch skin graft procedure on the left forelimb over the cannon bone. On day 10 of hospitalization, the horse developed a fever (102.6°F, RI: 99-101°F), and severe petechiae of the mucous membranes. A complete blood count (CBC) (Advia 2120i) revealed a severe thrombocytopenia (16,000 platelets/μL, RI:100,000-400,000/μL). Diagnostic testing was negative for Anaplasma phagocytophilum by PCR, Theileria equi and Babesia cabal...
Radiation in Veterinary Practice: Paradigm Shift Toward Precision and Curative Approaches. Ionizing radiation therapy has undergone a clear paradigm shift in veterinary oncology and inflammatory disease management, moving from mainly palliative use toward structured, curative treatment programs. This review synthesizes current evidence on key modalities used in veterinary practice, including external beam radiotherapy, brachytherapy, systemic targeted radionuclide therapy, stereotactic radiosurgery, stereotactic body radiotherapy, radiosynoviorthesis, and low-dose radiotherapy. Each modality is discussed in relation to its physical and biological basis, major isotopes or beam types,...
In Vitro Characterization of an Equinized Anti-PD-L1 Antibody for Cancer Immunotherapy in Horses. Horses develop spontaneous tumors, typically in old age. Although local tumor control can be achieved using conventional therapies, systemic therapies are required to treat recurrent and/or metastatic tumors. Immune checkpoint inhibitors, such as anti-PD-L1 antibodies, have been approved for the treatment of various tumor types in humans; however, little is known about the immunosuppressive roles of the PD-1/PD-L1 pathway in horses, and the therapeutic potential of these inhibitors remains to be elucidated. Previously, we reported that the rat monoclonal anti-PD-L1 antibody 6C11-3A11 cross-rea...
Effect of a single session of Equine Assisted Physical Therapy on postural stability in children with Down syndrome. Equine Assisted Physiotherapy (EAPT; formerly known as hippotherapy) is known to improve functional mobility, gross motor skills, and postural stability in individuals with Down syndrome (DS). However, it may be challenging to implement as a long-term intervention. The aim of the current study was to assess whether even a single session of EAPT can have effect on postural stability in children with DS. Methods: Nine children with DS underwent a single session of EAPT. Postural stability before and immediately after the EAPT session was assessed with the bipedal stance (variability of lower tru...
Successful resolution of natural Werneckiella equi infestation in two horses using pour-on Fipronil: A clinical observation. Werneckiella equi is an ectoparasite of equids, and control can be challenging because of the limited availability of licensed products. This case report describes the clinical observation of 1% fipronil pour-on against W. equi infestation in horses admitted to a veterinary hospital. Two horses were treated and observed between 2022 and 2023. Both exhibited pruritus, especially in the head, withers, and croup regions, and were diagnosed with severe W. equi infestation. The treatment consisted of a single topical application of 1% fipronil pour-on (1 mg/kg). Parasite reduction was assessed by c...
Global distribution of Neorickettsia risticii, the causative agent of potomac horse fever: a systematic review. Potomac Horse Fever (PHF), also known as equine neorickettsiosis (EN) or equine monocytic ehrlichiosis is an acute, potentially fatal infectious disease in horses caused by the monocytotropic rickettsia bacterium Neorickettsia risticii. This obligate intracellular bacterium is maintained throughout the life cycle of digenetic trematodes which utilize multiple intermediate and definitive hosts. Research on N. risticii is scattered across multiple continents, with most studies originating from North and South America. Therefore, a systematic review is needed to consolidate global evidence, clari...
Sequential Application of Autologous Platelet Rich Plasma and Muscle-Derived Mesenchymal Stem Cells for Acute Tendon Injuries in Horses: Early Clinical and Ultrasonographic Outcomes in a Randomized, Double-Blind Controlled Study. Tendon and ligament injuries are frequent in sport horses and are prone to recurrence due to incomplete healing. Platelet-rich plasma (PRP) and mesenchymal stem cells (MSCs) are increasingly used, but data controlled on the early effects of autologous MSCs remain limited. A prospective randomized, double-blind, placebo-controlled trial was conducted in horses with naturally occurring tendinopathies. After standardized PRP pretreatment, non-responders were randomized to receive intralesional autologous muscle-derived MSCs (mdMSCs, = 17) or placebo ( = 6). Clinical and ultrasonographic paramete...
Equine Protozoal Myeloencephalitis: An Ancient Parasite Meets Modern Compounding. EPM remains particularly rampant in racing populations due to transport stress, young age, and congregate housing conditions. For compounding pharmacists, understanding that we're managing chronic parasite suppression - not achieving cure - fundamentally changes our approach to formulation strategy, stability assessment, and client counseling. The two formulations presented separately represent years of refinement, demonstrating compounding's essential role when commercial products fall short.
Topical treatment of equine aural plaques with nitric acid and zinc solution. Equine aural plaque caused by equine papilloma viruses is common worldwide and affected horses can show severe clinical signs. Due to its viral aetiology, in some countries affected horses are not allowed to compete. Since lesions persist, showing no spontaneous regression, effective and safe treatment is required. Currently, the only treatment with consistent efficacy is imiquimod. Treatment time is prolonged and adverse effects are common. In humans, papilloma warts are successfully and safely treated with topical nitric-zinc complex solutions inducing a painless caustic effect. Objective: T...
Photodynamic therapy with infracyanine green induces keratocyte depopulation in the normal equine cornea. Use of photodynamic therapy (PDT) for the treatment of immune-mediated keratitis (IMMK) in horses is becoming common. The safety and morphologic impact on the normal equine cornea have not been investigated, and the mechanism of its efficacy is unknown. Objective: To investigate the morphologic effects and safety of in vivo PDT on healthy equine corneas. Methods: In vivo experiment. Methods: Six university-owned horses underwent unilateral corneal PDT with intrastromal infracyanine green (EmunDo®) and photoactivation with an 810 nm diode laser (500 mW for 2.5 min = 75 Joules). Compl...
Equine neorickettsiosis: A global perspective of the natural habitat of the bacteria and clinical disease. Equine neorickettsiosis (EN) is an infectious, non-contagious systemic disease of horses caused by the closely related obligatory intracellular bacterial species Neorickettsia risticii and N. findlayensis. Clinical cases are considered endemic in multiple regions across the United States and Canada, as well as in parts of South America, including Uruguay and Brazil. Neorickettsia spp. are obligate endosymbionts of digenean trematodes, which have complex life cycles involving a molluscan first intermediate host, a wide range of invertebrate or vertebrate second intermediate hosts, and a vertebr...
Survey on Faecal Microbiota Transplantation and Probiotic Use in Equine Practice in France and Belgium. Faecal microbiota transplantation (FMT) and probiotics are used in equine practice. Understanding veterinarians' perceptions and practices is crucial for effective implementation. Objective: (1) Evaluate the prevalence, usage patterns and perceived effectiveness of probiotics and FMT among equine veterinarians in France and Belgium. (2) Assess their knowledge, practices and influencing factors across demographics and settings. (3) Explore links between FMT protocols and treatment satisfaction. Methods: Cross-sectional survey. Methods: An online survey collected demographic data and responses o...
