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Topic:Stability

Stability in horses encompasses various aspects of equine physiology and behavior that contribute to their balance and coordination. This concept is pertinent to understanding how horses maintain equilibrium during movement, standing, and in response to external stimuli. Factors influencing stability include musculoskeletal health, neurological function, and proprioceptive abilities. Research in this area often examines the biomechanics of equine movement, the impact of training and rehabilitation techniques on balance, and the role of stability in preventing injuries. This page compiles peer-reviewed research studies and scholarly articles that explore the mechanisms underlying stability in horses, as well as interventions designed to enhance or assess balance and coordination in equine populations.
Exploring the Dissolution, Solid-state Properties, and Long-term Storage Stability of Cryoprotectant-free Fenbendazole Nanoparticles.
AAPS PharmSciTech    August 28, 2024   Volume 25, Issue 7 199 doi: 10.1208/s12249-024-02921-8
Bedogni G, Michelena LV, Seremeta K, Okulik N, Salomon C.Fenbendazole is an antiparasitic drug widely used in veterinary medicine to treat parasitic infections caused in animals like cattle, horses, sheep, and dogs. Recently, it has been repositioned as a potential alternative for cancer treatment. However, it is a highly hydrophobic molecule (0.9 ug/mL), which can compromise its dissolution rate and absorption. Thus, this work aimed to apply a nanotechnological approach to improve drug solubility and dissolution performance. Fenbendazole nanoparticles stabilized by different poloxamers were obtained by lyophilization without cryoprotectants. The be...
Unilateral laser ventriculocordectomy results in increased arytenoid stability in horses with severe left sided recurrent laryngeal neuropathy.
Equine veterinary journal    May 1, 2024   doi: 10.1111/evj.14101
Baldwin CM, Ireland JL, Barakzai SZ.There is no objective information reporting the effect of unilateral laser ventriculocordectomy (VeC) on arytenoid abduction or stability. Objective: To evaluate arytenoid stability and abduction in horses with severe recurrent laryngeal neuropathy (RLN) before and after unilateral laser VeC. Methods: Prospective cohort. Methods: Eight horses with grade C or D exercising laryngeal function that underwent unilateral laser VeC were included. Exercising endoscopy was performed before and ≥6 weeks after left-sided laser VeC. Arytenoid stability at maximal exercise was calculated by measuring t...
Stability and Detection Limit of Avian Influenza, Newcastle Disease Virus, and African Horse Sickness Virus on Flinders Technology Associates Card by Conventional Polymerase Chain Reaction.
Animals : an open access journal from MDPI    April 21, 2024   Volume 14, Issue 8 doi: 10.3390/ani14081242
Taesuji M, Rattanamas K, Yim PB, Ruenphet S.The Flinders Technology Associates (FTA) card, a cotton-based cellulose membrane impregnated with a chaotropic agent, effectively inactivates infectious microorganisms, lyses cellular material, and fixes nucleic acid. The aim of this study is to assess the stability and detection limit of various RNA viruses, especially the avian influenza virus (AIV), Newcastle disease virus (NDV), and African horse sickness virus (AHSV), on the FTA card, which could significantly impact virus storage and transport practices. To achieve this, each virus dilution was inoculated onto an FTA card and stored at r...
Influence of screw configuration on reduction and stabilization of simulated complete lateral condylar fracture in equine limbs.
Veterinary surgery : VS    February 21, 2024   doi: 10.1111/vsu.14077
Brabon A, Hughes KJ, Jensen K, Xie G, Labens R.To determine the influence of screw configuration on the reduction and stabilization of simulated complete lateral condylar fracture. Methods: Randomized experimental crossover study. Methods: A lateral condylar fracture was simulated in 18 cadaver limbs from nine horses. Each limb underwent repair with 4.5 mm diameter cortex screws, tightened to 4 Nm, in a linear and triangular configuration. Computed tomography (CT) of each repair was performed with the limbs in unloaded and loaded conditions. Fracture gaps were measured at the dorsal, palmar, and middle locations of the third metacarpal c...
Pre-analytical stability of selected biochemical analytes in serum of horses and oxen stored at -20°C.
Veterinary medicine and science    February 15, 2024   Volume 10, Issue 2 e1368 doi: 10.1002/vms3.1368
Megerssa YC, Gari FR.Delays between blood collection and analysis are inevitable, and samples are always stored in the refrigerator. The current study aimed to evaluate the stability of serum total cholesterol (TC), triglycerides (TG), total protein (TP), albumin and urea (URA) in horses and oxen after storage at -20°C. Methods: Sera from apparently healthy 20 male horses and 20 oxen were obtained and aliquots of serum were divided into 3 portions. The first tube was used for baseline (T0) measurement of analyte values, whereas the other two tubes, T1 and T2, were stored at -20°C for 1 and 2 months, respectively...
Preserving frozen stallion sperm on dry ice using polymers that modulate ice crystalization kinetics.
Cryobiology    February 1, 2024   Volume 114 104852 doi: 10.1016/j.cryobiol.2024.104852
Uhlmannsiek L, Shen H, Eylers H, Martinsson G, Sieme H, Wolkers WF, Oldenhof H.Cryopreserved semen is routinely shipped in liquid nitrogen. Dry ice could serve as an alternative coolant, however, frozen storage above liquid nitrogen temperatures (LN2, -196 °C) may negatively affect shelf-life and cryosurvival. In this study, we determined critical temperatures for storage of cryopreserved stallion sperm. We evaluated: (i) effects of cooling samples to different subzero temperatures (-10 °C to -80 °C) prior to storing in LN2, (ii) stability at different storage temperatures (i.e., in LN2, dry ice, -80 °C and -20 °C freezers, 5 °C refrigerator), and (iii) sperm...
Development and evaluation of a test strip for the rapid detection of antibody against equine infectious anemia virus.
Applied microbiology and biotechnology    January 8, 2024   Volume 108, Issue 1 1-13 doi: 10.1007/s00253-023-12980-9
Zhang Z, Guo K, Chu X, Liu M, Du C, Hu Z, Wang X.Equine infectious anemia (EIA) is a contagious disease of horses caused by the equine infectious anemia virus (EIAV). The clinical signs at the acute phase include intermittent high fever, thrombocytopenia, hemorrhage, edema, and anemia. The clinical signs at chronic and relapsing subclinical levels include emaciation and progressive weakness. Surviving horses become lifelong carriers because of the integration of the viral genome into that of the host, and these horses can produce and transmit the virus to other animals. This increases the difficulty of imposing practical control measures to ...
Analytical Validation of MINI-PET as Point-of-Care for Erythrocyte Sedimentation Rate Measure in Horses.
Veterinary medicine international    November 15, 2023   Volume 2023 9965095 doi: 10.1155/2023/9965095
Pieroni C, Grassi A, Pantoli M, Berretti M, Messina S, Giovannini C, Lubas G, Diamanti D.The erythrocyte sedimentation rate (ESR) is a widely used diagnostic assay in human medicine but nowadays poorly applied in veterinary medicine. This test measures the speed (millimeters per hour) at which red blood cells settle in a whole anticoagulated blood tube. In human medicine, high ESR values are associated with various disorders, including infections, rheumatoid arthritis, oncologic diseases, and other inflammatory conditions. The ESR can also be influenced by some factors such as age and gender. In veterinary medicine, the ESR with the Westergren manual method was almost forgotten ov...
Novel polymorphisms in the prion protein gene (PRNP) and stability of the resultant prion protein in different horse breeds.
Veterinary research    October 17, 2023   Volume 54, Issue 1 94 doi: 10.1186/s13567-023-01211-8
Sola D, Artigas R, Mediano DR, Zaragoza P, Badiola JJ, Martín-Burriel I, Acín C.Prion diseases are fatal neurodegenerative disorders in which the main pathogenic event is the conversion of the cellular prion protein (PrP) into an abnormal and misfolded isoform known as PrP. Most prion diseases and their susceptibility and pathogenesis are mainly modulated by the PRNP gene that codes for PrP. Mutations and polymorphisms in the PRNP gene can alter PrP amino acid sequence, leading to a change in transmission efficiency depending on the place where it occurs. Horses are animals that are considered to be highly resistant to prions. Several studies have attempted to identify po...
The PTP1B Inhibitor Trodusquemine (MSI-1436) Improves Glucose Uptake in Equine Metabolic Syndrome Affected Liver through Anti-Inflammatory and Antifibrotic Activity.
International journal of inflammation    September 30, 2023   Volume 2023 3803056 doi: 10.1155/2023/3803056
Bourebaba L, Serwotka-Suszczak A, Bourebaba N, Zyzak M, Marycz K.Hyperactivation of protein tyrosine phosphatase (PTP1B) has been associated with several metabolic malfunctions ranging from insulin resistance, metaflammation, lipotoxicity, and hyperglycaemia. Liver metabolism failure has been proposed as a core element in underlying endocrine disorders through persistent inflammation and highly fibrotic phenotype. Unassigned: In this study, the outcomes of PTP1B inhibition using trodusquemine (MSI-1436) on key equine metabolic syndrome (EMS)-related alterations including inflammation, fibrosis, and glucose uptake have been analyzed in liver explants collect...
Development and evaluation of polycaprolactone-based electrospun nanofibers containing timolol maleate as a sustained-release device for treatment of glaucoma: in vivo evaluation in equine eye.
Research in pharmaceutical sciences    September 8, 2022   Volume 17, Issue 5 468-481 doi: 10.4103/1735-5362.355196
Mirzaeei S, Faryadras FB, Mehrandish S, Rezaei L, Daneshgar F, Karami A.Prolonging the drug release can be a suitable approach to overcome the challenges related to topical ophthalmic administration of drugs especially the ones prescribed for chronic ailments. The sustained delivery of the drug would reduce the required frequency of administration which could extremely improve patient compliance and feeling of well-being. This study aimed to develop nanofibrous inserts for sustained ophthalmic delivery of timolol maleate (TIM) for the treatment of glaucoma. Unassigned: Polycaprolactone-based nanofibers containing TIM were prepared using pure polycaprolactone or a ...
Standing horse posture: a longer stance is more stable.
Biology open    May 12, 2022   Volume 11, Issue 4 bio059139 doi: 10.1242/bio.059139
Gellman K, Ruina A.Horses stand for most of each day. Although they can use various leg configurations (postures), they usually stand with vertical legs. Why? We addressed this question with a 2D quasi-static model having three rigid parts: a trunk, massless fore-limbs and massless rear limbs, with hinges at the shoulders, hips, and hooves. The postural parameter we varied was ℓg, the distance between the hooves. For a given ℓg, statics finds an equilibrium configuration which, with no muscle stabilization (i.e. using minimal effort) is unstable. We assume a horse uses that configuration. To measure the neur...
The grazing gait, and implications of toppling table geometry for primate footfall sequences.
Biology letters    May 18, 2018   Volume 14, Issue 5 20180137 doi: 10.1098/rsbl.2018.0137
Usherwood JR, Smith BJH.Many medium and large herbivores locomote forwards very slowly and intermittently when grazing. While the footfall order during grazing is the same as for walking, the relative fore-hind timing-phasing-is quite different. Extended periods of static stability are clearly required during grazing; however, stability requirements are insufficient to account for the timing. Aspects of relatively rapid rolling and pitching-toppling due to the resistance of the back to bending and twisting-can be included in a simplifying geometric model to explain the observation that, in grazing livestock, a step f...
The equine arteritis virus isolate from the 2010 Argentinian outbreak.
Revue scientifique et technique (International Office of Epizootics)    March 31, 2015   Volume 33, Issue 3 937-946 doi: 10.20506/rst.33.3.2331
Metz GE, Serena MS, Panei CJ, Nosetto EO, Echeverria MG.A semen sample from a stallion infected during the 2010 equine arteritis virus (EAV) outbreak was received for viral isolation prior to castration of the animal. The virus was identified using a polyclonal antibody immunofluorescence test. Reverse-transcription polymerase chain reaction (RT-PCR) was used to amplify a region of the GP5 gene with primers GL105F and GL673R. The PCR products were purified and sequences of both strands were determined in a MegaBACE™1000 with inner primers CR2 and EAV32. A phylogenetic dataset was built with the previously reported sequences of five strains isolat...
Stability of 1% voriconazole solution in a constant-rate infusion pump for topical ocular delivery to horses.
Veterinary ophthalmology    March 7, 2014   Volume 17 Suppl 1 82-89 doi: 10.1111/vop.12155
Smith KM, Maxwell L, Gull T, Payton ME, Gilmour MA.To establish the effect of storage in a constant-rate infusion (CRI) pump on the sterility and stability of voriconazole 1% solution. Methods: Nine vials of voriconazole (Vfend(®) I.V.) 1% solution were prepared. Approximately half of each solution was used to prime a commercially available CRI pump with attached subpalpebral lavage system (CRI/SPL unit) with the remaining solution stored in the commercial glass vial. Three CRI/SPL units and their three corresponding vials were stored at one of three temperatures: 23 °C, 33 °C, and 40 °C. The CRI pumps ran for 7 days, and the vials were st...
Stability of equine IgG antivenoms obtained by caprylic acid precipitation: towards a liquid formulation stable at tropical room temperature.
Toxicon : official journal of the International Society on Toxinology    August 13, 2009   Volume 53, Issue 6 609-615 doi: 10.1016/j.toxicon.2009.01.012
Segura A, Herrera M, González E, Vargas M, Solano G, Gutiérrez JM, León G.Liquid formulations of antivenom require a cold chain for their distribution and storage, especially in tropical countries characterized by high temperature and humidity (climatic zone IV). Since cold chain is often deficient in many regions, there is a need to develop novel formulations of liquid antivenoms of higher stability at room temperatures. The effect of addition of the polyols mannitol and sorbitol on the thermal stability of caprylic acid-fractionated equine whole IgG antivenoms was assessed in preparations having different concentrations of protein and phenol. Results evidenced tha...
Stability of pergolide mesylate oral liquid at room temerature.
International journal of pharmaceutical compounding    May 1, 2009   Volume 13, Issue 3 254-258 
Shank BR, Ofner CM.Pergolide mesylate (proprietary name Permax) is used to treat equine Cushing's syndrome. Since pergolide mesylate has been removed from the market, the tablets are no longer available. Therefore, pergolide mesylate preparations have to be compounded for veterinary use. Compounded oral liquid formulations have been given arbitrary beyond-use dates of 14 days (aqueous) to 90 days (oil based). The goal of this study was to determine the stability of a 0.2 mg/mL pergolide oral liquid prepared according to a previousy published formulation and stored at room temperature. The sample preparation and ...
Effects of compounding and storage conditions on stability of pergolide mesylate.
Journal of the American Veterinary Medical Association    February 13, 2009   Volume 234, Issue 3 385-389 doi: 10.2460/javma.234.3.385
Davis JL, Kirk LM, Davidson GS, Papich MG.To determine the effects of temperature and light over a 35-day period on stability of pergolide mesylate after compounding in an aqueous vehicle. Methods: Evaluation study. Methods: Pergolide was compounded into a formulation with a final target concentration of 1 mg/mL. Aliquots of the formulation were then stored at -20 degrees, 8 degrees, 25 degrees, or 37 degrees C without exposure to light or at 25 degrees C with exposure to light for 35 days. Samples were assayed in triplicate by means of high-pressure liquid chromatography immediately after compounding and after 1, 7, 14, 21, and 35 da...
The effect of pre-polymeric solution and subsequent encapsulation in hydrogel membranes on the stability and biological activity of horse myoglobins. Valentín-Rodríguez C, López-Garriga J, Torres-Lugo M.Proteins are biological macromolecules which have a unique spatial conformation. Once this 3D spatial conformation is affected the protein's biological stability and activity can be severely limited. For these reasons, this investigation focuses on the effects of pre-polymeric solution components on the behavior of proteins to be encapsulated by the entrapment technique in anionic, cationic, and neutral hydrogel membranes. Equine skeletal muscle myoglobin (MMb), and equine heart myoglobin (HMb) were employed as model molecules. Three hydrogel morphologies were examined: methacrylic acid-poly(e...
Symmetry in running.
Science (New York, N.Y.)    March 14, 1986   Volume 231, Issue 4743 1292-1294 doi: 10.1126/science.3945823
Raibert MH.Symmetry plays a key role in simplifying the control of legged robots and in giving them the ability to run and balance. The symmetries studied describe motion of the body and legs in terms of even and odd functions of time. A legged system running with these symmetries travels with a fixed forward speed and a stable upright posture. The symmetries used for controlling legged robots may help in elucidating the legged behavior of animals. Measurements of running in the cat and human show that the feet and body sometimes move as predicted by the even and odd symmetry functions.
[Component stability of a reference horse serum].
Laboratornoe delo    January 1, 1982   Issue 1 62-63 
Golovchenko OM.No abstract available
Stability and kinetic behavior of carboxymethylated horse muscle acylphosphatase.
Physiological chemistry and physics    January 1, 1978   Volume 10, Issue 4 367-373 
Stefani M, Berti A, Camici G, Manao G, Cappugi G, Ramponi G.Horse muscle acylphosphatase consists of a main chain S-S bound to glutathione. It was found that removal of the glutathione by reduction and successive carboxymethylation of the only cysteine of the main chain affects the stability of the enzyme, mainly with respect to thermal inactivation. On the other hand, the kinetic properties of the enzyme are affected very little.
Stability of cephalosporins in horse serum.
Antimicrobial agents and chemotherapy    January 1, 1977   Volume 11, Issue 1 174-175 doi: 10.1128/AAC.11.1.174
Foglesong MA.The antibiotic activity of cephalothin, cephaloridine, cephalexin, cephaloglycin, cefazolin, and cefamandole was determined after storage for up to 30 days in horse serum at -10 and 4 degrees C. Cephalothin, cefamandole, cefazolin, and cephalexin were stable for at least 30 days at -10 degrees C, whereas cephaloridine lost 29% of its initial activity and cephaloglycin lost more than 50%. Cefamandole, cefazolin, and cephalexin could only be stored for 3 days at 4 degrees C without significant loss in activity, whereas cephalothin, cephaloridine, and cephaloglycin could be stored for only 1 day....
Estimation of the stability of dry horse serum cholinesterase by means of an accelerated storage test.
The Journal of pharmacy and pharmacology    January 1, 1968   Volume 20, Issue 1 48-53 doi: 10.1111/j.2042-7158.1968.tb09617.x
Cole BR, Leadbeater L.No abstract available
Studies on the stability of equine gonadotropin in crude and in purified form.
The Journal of clinical endocrinology and metabolism    April 1, 1950   Volume 10, Issue 4 432-436 doi: 10.1210/jcem-10-4-432
COLE HH, GOSS H, BODA J.No abstract available
Stability of reduced ascorbic acid in mares’ milk.
The Journal of nutrition    July 10, 1947   Volume 34, Issue 1 113-119 doi: 10.1093/jn/34.1.113
HOLMES AD, JONES CP.Fifteen samples of mares' milk with initial potencies of from 86 mg to 161 mg of reduced ascorbic acid per liter were stored in the dark at 10°C. They were assayed at daily or longer intervals. Four samples observed for 10 days lost an average of 2.5 mg per liter daily; 4 samples stored 20 days lost 1.8 mg per day; 2 stored 28 days lost 1.3 mg daily; and 3 observed for 33 days lost 1.1 mg per liter per day. These data show that the rate of loss of reduced ascorbic acid from mares' milk is only a fraction of the rate of loss from cows' milk.