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Laura Johnstone BVSc, MVSc
Senior Practicing Veterinarian in Equine
School of Veterinary ScienceLaura is an equine medicine internist and a diplomat of the American College of Veterinary Internal Medicine. She graduated from Massey University (BVSc) in 2008 and has worked in equine general practice in Christchurch, Invercargill and Central Otago. She completed a masters in equine neurology and achieved diplomate status with the American College of Veterinary Internal Medicine after completing a residency at the University of Pennsylvania. Laura enjoys all aspects of equine medicine and is particularly interested in neurology, cardiology and ultrasound. At Massey, Laura is involved in BVScV clinical training and the equine medicine service.
Professional
Qualifications
- Bachelor of Veterinary Science with Distinction - Massey University (2008)
- Master of Veterinary Science with Distinction - Massey University (2010)
Research Expertise
Research Interests
Peer-reviewed publications:
Johnstone LK, Mayhew IG, Fletcher LR. (2012). Clinical expression of lolitrem B (perennial ryegrass) intoxication in horses. Equine Veterinary Journal 44, 304 - 309.
Johnstone LK, Mayhew IG. (2013). Flow-mediated K+ secretion in horses intoxicated with lolitrem B (perennial ryegrass staggers). New Zealand Veterinary Journal 61, 159 - 164.
Johnstone LK, Engiles JB, Aceto H, Buechner-Maxwell V, Divers T, Gardner R, Levine R, Scherrer N, Tewari D, Tomlinson J and Johnson AL. (2016). Retrospective evaluation of horses diagnosed with Neuroborreliosis on Postmortem Examination: 16 cases (2004 - 2015). Journal of Veterinary Internal Medicine, 30(4), 1305 – 1312.
Johnson AL, Johnstone LK, Stefanovski D (2018). Cerebrospinal fluid Lyme multiplex assay results are not diagnostic in horses with neuroborreliosis. Journal of Veterinary Internal Medicine. DOI: 10.1111/jvim.15067
Scherrer NM, Knichelbein KE, Engiles JB, Johnstone LK, Tewari D, Johnson AL (2020). Ocular disease in horses with confirmed ocular or central nervous system Borrelia infection: Case series and review of literature. Veterinary Ophthalmology, 23(6), 1014 – 1024.
Lovett A, Vokes J, Loghides N, Johnstone L, Sykes B. Survival of formalin intoxication in a 13-year-old Thoroughbred gelding. Equine Veterinary Journal. 2023 Aug 16.
Thesis, abstracts and chapters:
Johnstone LK. (2010). Clinical expression of perennial ryegrass (lolitrem B) intoxication in New Zealand horses: a thesis presented in partial fulfillment of the requirements for the degree of Master of Veterinary Science at Massey University, Manawatu, New Zealand.
Johnson AL, Johnstone LK. (2016) Serum and CSF Lyme Multiplex results for neurologic horses with and without Neuroborreliosis. Paper presented at the ACVIM forum, Denver, CO, USA.
Knickelbein KE, Scherrer NM, Engiles JB, Johnstone LK, Johnson AL. (2016). Uveitis Associated with Lyme Neuroborreliosis in 5 horses. Abstracts: 47th Annual Meeting of the American College of Veterinary Ophthalmologists, Monterey, CA. Veterinary Ophthalmology, 19(6), E38
Johnstone LK. (2017). Phosphorus deficiency/excess. In C. Chase, K. Lutz, E. McKenzie, & A. Tibary (Eds.), Blackwell's Five-Minute Veterinary Consult Ruminant (Second ed., pp. 634 - 636). NJ, USA: John Wiley & Sons, Inc.
Johnstone LK. (2017). Zinc deficiency and toxicity. In C. Chase, K. Lutz, E. McKenzie, & A. Tibary (Eds.), Blackwell's Five-Minute Veterinary Consult Ruminant (Second ed., pp. 900 - 902). NJ, USA: John Wiley & Sons, Inc.
Johnstone LK. (2021). Complications of Diagnostic Procedures of the Nervous System. In LM. Rubio-Martinez & DA Hendrickson (Eds.), Complications in Equine Surgery (First ed., p 815). NJ, USA: John Wiley & Sons, Inc.
Johnstone LK. (2022). Radial Neuropathy. In JA. Orsini, NS. Grenager, A. deLahunta (Eds.), Comparative Veterinary Anatomy: A clinical approach (First ed., p 862). London, UK: Elsevier, Inc.
Abstract Presentations
Clinical expression of lolitrem B intoxication in horses | Pan Pacific Veterinary Conference, Brisbane, Australia | 2010
Equine Lyme Neuroborreliosis: 16 cases, 2004 - 2014 | ACVIM Forum, Indianapolis, Indiana, USA | 2015
Area of Expertise
Field of research codes
Agricultural And Veterinary Sciences (070000):
Veterinary Medicine (070706):
Veterinary Sciences (070700)
Keywords
Equine internal medicine, large animal neurology, haemostasis