The evaluation of the effect of probiotics on the healing of equine distal limb wounds.
Abstract: The effect of dressings saturated with either a standardized suspension of probiotic bacteria or saline on healing of traumatic distal limb wounds in horses was evaluated for 24 days, and the systemic inflammatory effect was assessed. The wounds were divided in two groups based on the phase of healing: wounds with an incomplete (ICGB) or a complete granulation bed (CGB). The wound area was expressed as percentage of the wound area at day 0 and defined as relative wound area. The mean relative wound area decreased faster in probiotic than saline treated wounds. The difference was most obvious in CGB and increased rapidly from day 0 until day 12 up to 30%, and stabilized around 25% thereafter until the end of the observation period, but it was not statistically significant because of the large variation within the treatment groups. The mean wound area of CGB decreased to 28.4% (range: 6.3 to 49.3) with probiotic and to 51.9% (range: 29.3 to 81.7) with saline treatment at day 24. Additionally, the rate to 50% healing in CGB was 3.4 faster with probiotic compared to saline treatment, whereas in ICGB this was 1.9 faster. Topical probiotics did not increase serum amyloid A and white blood cell counts. Although the mentioned differences were not statistically significant, the clinical relevance of the effect of treatment with probiotics in CGB wounds is clear, supported by the differences in mean wound area in course of time and the time required to reach 50% healing (day 12 for probiotic vs more than day 24 for saline treated wounds). Thus the probiotic treated wounds reached 50% reduction in wound area in half of the time of the saline treated wounds. The topical use of probiotics can be considered as safe as it did not cause a systemic effect.
Publication Date: 2020-07-29 PubMed ID: 32726347PubMed Central: PMC7390451DOI: 10.1371/journal.pone.0236761Google Scholar: Lookup
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- Journal Article
- Research Support
- Non-U.S. Gov't
Summary
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The study examines how dressings infused with probiotics can impact healing in horses’ distal limb wounds and reduce inflammation, with wounds treated by probiotics showing a faster rate of recovery than those treated with saline instead.
Research Design and Methods
- The researchers assessed the impact of probiotics on the healing process of distal limb wounds in horses over 24 days.
- The wound dressings were either saturated with a standardized suspension of probiotic bacteria or saline.
- These wounds were separated into two groups: those with incomplete granulation bed (ICGB) and those with a completed granulation bed (CGB).
- The relative wound area was established by expressing the wound area as a percentage of its area on the initial day (day 0).
Principal Findings
- On average, the relative wound area decreased faster in wounds treated with probiotics than those treated with saline.
- The difference was most noticeable in wounds with a complete granulation bed (CGB), with the decrease in wound size reaching up to 30% from day 0 until day 12, before stabilizing around 25% for the rest of the observational period.
- However, despite this trend, the differences weren’t statistically significant due to substantial variation within the treatment groups.
- The mean wound area of CGB decreased to 28.4% with probiotic treatment and to 51.9% with saline treatment by the 24th day. Furthermore, the healing rate to 50% in CGB was 3.4 times faster with probiotics compared to the saline treatment, whereas in ICGB, it was 1.9 times faster.
Systemic Inflammatory Response and Safety of Probiotics
- The study also assessed the systemic inflammatory effect by checking levels of serum amyloid A and white blood cell counts. The use of topical probiotics did not cause an increase in these, demonstrating that probiotics can be considered safe for topical use as they didn’t trigger a systemic response.
Clinical Importance of Probiotics in Healing
- Although the differences observed weren’t statistically significant, the practical relevance of utilizing probiotics in treating CGB wounds is quite apparent.
- As the mean wound area over time and the time required to reach 50% healing (day 12 for probiotic vs more than day 24 for saline treated wounds) improved, this suggests that the use of probiotics enabled wounds to reach a 50% reduction in wound area in half of the time it took for the saline treated wounds.
Cite This Article
APA
Wilmink JM, Ladefoged S, Jongbloets A, Vernooij JCM.
(2020).
The evaluation of the effect of probiotics on the healing of equine distal limb wounds.
PLoS One, 15(7), e0236761.
https://doi.org/10.1371/journal.pone.0236761 Publication
Researcher Affiliations
- Woumarec, Wageningen, The Netherlands.
- Højgård Hestehospital A/S, Morud, Denmark.
- Paardenkliniek West-Brabant, Roosendaal, The Netherlands.
- Division Farm Animal Health, Department of Population Health Sciences, Faculty of Veterinary Medicine, University of Utrecht, Utrecht, The Netherlands.
MeSH Terms
- Animals
- Bacteriology
- Extremities / physiology
- Female
- Hematology
- Horses / blood
- Horses / microbiology
- Horses / physiology
- Male
- Probiotics / pharmacology
- Wound Healing / drug effects
Conflict of Interest Statement
The study was funded by Micuri Aps, Denmark. Unfortunately the company does not exist anymore. Micuri has provided the materials required for the study, and payed for the bacteriology and the hematology. Micuri has payed a compensation to the contributing practitioners for their clinical work to treat the wounds of the horses. JW SL AJ have recieved an award for setting up the study and their practical work to perform the study (order of 50%). Analysis of the results and preparation of the manuscript has not been funded. Micuri Aps had no role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. The authors declare that there is no competing interests with Micuri Aps related to employment, consultancy, relationships, patents, products in development, marketed products etc. There is no relation to the PLOS ONE journal, no relation to any legal proceedings, and there is no benefit from publication of the paper. The funding by Micuri Aps does not alter our adherence to PLOS ONE policies on sharing data and materials. There are no restrictions on sharing of data and/or materials.
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Citations
This article has been cited 6 times.- Styková E, Valocký I, Kačírová J, Fecskeová LK. Microbiological effect of topically applied Weissella cibaria on equine pastern dermatitis. Front Vet Sci 2024;11:1493756.
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