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Frontiers in pharmacology2018; 9; 978; doi: 10.3389/fphar.2018.00978

Gene Therapy Using Plasmid DNA Encoding VEGF164 and FGF2 Genes: A Novel Treatment of Naturally Occurring Tendinitis and Desmitis in Horses.

Abstract: This clinical study describes the intralesional application of the plasmid DNA encoding two therapeutic species-specific growth factors: vascular endothelial growth factor (VEGF164) and fibroblast growth factor 2 (FGF2) in seven horses to restore naturally occurring injuries of the superficial digital flexor tendon (SDFT) (tendinitis) and in three horses with suspensory ligament branch desmitis. Following application all horses were able to commence a more rapid exercise program in comparison to standardized exercise programs. Clinical observation and ultrasonic imaging was used to evaluate the regeneration rate of the tendon and ligament injury recovery and to confirm the safety of this gene therapy in horses, throughout a 12 month period. Follow-up data of the horses revealed a positive outcome including significant ultrasonographic and clinical improvements in 8 out of 10 horses with SDFT and suspensory ligament branch lesions, with return to their pre-injury level of performance by 2-6 months after the completion of treatment. The ninth horse initially presenting with severe suspensory ligament branch desmopathy, showed no significant ultrasonographic improvements in the first 2 months after treatment, however, it improved clinically and became less lame. The final horse, presenting with severe tendinitis of the SDFT returned to their pre-injury level of performance, but experienced re-injury 6 months after treatment. This data is highly promising, however, further research in experimental models, with the histopathological, immunohistochemical and gene expression evaluation of the equine tendon/ligament after gene therapy application is required in order to fully understand the mechanisms of action. This treatment and the significant clinical impacts observed represents an important advancement in the field of medicine.
Publication Date: 2018-08-31 PubMed ID: 30233367PubMed Central: PMC6127648DOI: 10.3389/fphar.2018.00978Google Scholar: Lookup
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  • Journal Article

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The study explores a new method of treating injury-causing conditions in horses, namely tendinitis and desmitis, with gene therapy. Genetic codes of growth factors (VEGF164 and FGF2) are introduced into the horse’s body to encourage tissue repair and facilitate faster recovery.

Gene Therapy Approach

  • The study involved injecting plasmid DNA, carrying the codes for two growth factors, directly into the horses’ tendon or ligament injury site.
  • The growth factors involved include vascular endothelial growth factor (VEGF164) and fibroblast growth factor 2 (FGF2). These factors play a pivotal role in healing and regenerative processes.

Study Participants and Method

  • The research comprised seven horses with superficial digital flexor tendon (SDFT) injuries, a condition analogous to tendinitis, and three horses with suspensory ligament branch desmitis—another type of inflammation.
  • After applying the gene therapy, the horses were observed and followed up over a 12-month period to track their recovery and document any side effects or undesirable outcomes.
  • The researchers used clinical observation and ultrasound imaging to evaluate the rate of recovery from tendon and ligament injuries.

Results and Outcomes

  • The horses were found to be able to return to their exercise routines more quickly than would normally be expected with conventional treatment methods.
  • The researchers found that the therapy produced significant improvements in 8 out of 10 horses, with a return to their pre-injury level of performance within 2-6 months after completion of treatment.
  • One of the horses, which had presented with severe suspensory ligament branch desmopathy, did not initially demonstrate significant ultrasonographic improvements, though clinically it was less lame.
  • The other horse, which had presented with severe tendinitis of the SDFT, returned to its pre-injury level of performance but experienced a re-injury 6 months after treatment.
  • Despite these variations, the overall results were promising, indicating that this line of treatment could become an important advancement in equine therapy.

Further Research

  • Despite the positive outcomes, the researchers recommend further in-depth study on this treatment – including examining the histopathological, immunohistochemical, and gene expression evaluations of the equine tendon/ligament after gene therapy application – to understand the exact mechanisms of action.

Cite This Article

APA
Kovac M, Litvin YA, Aliev RO, Zakirova EY, Rutland CS, Kiyasov AP, Rizvanov AA. (2018). Gene Therapy Using Plasmid DNA Encoding VEGF164 and FGF2 Genes: A Novel Treatment of Naturally Occurring Tendinitis and Desmitis in Horses. Front Pharmacol, 9, 978. https://doi.org/10.3389/fphar.2018.00978

Publication

ISSN: 1663-9812
NlmUniqueID: 101548923
Country: Switzerland
Language: English
Volume: 9
Pages: 978
PII: 978

Researcher Affiliations

Kovac, Milomir
  • Moscow State Academy of Veterinary Medicine and Biotechnology, Moscow, Russia.
Litvin, Yaroslav A
  • Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia.
Aliev, Ruslan O
  • Moscow State Academy of Veterinary Medicine and Biotechnology, Moscow, Russia.
Zakirova, Elena Y
  • Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia.
Rutland, Catrin S
  • School of Veterinary Medicine and Science, Faculty of Medicine, University of Nottingham, Nottingham, United Kingdom.
Kiyasov, Andrey P
  • Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia.
Rizvanov, Albert A
  • Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia.

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