Feb 19, 2018
Injectable autologous platelet-rich plasma for regenerative medicine in donkeys
- Adolfo Maria TAMBELLA1,
- Evelina SERRI1,
- Fulvio LAUS1,
- Anna Rita ATTILI1
- 1School of Biosciences and Veterinary Medicine, University of Camerino, Matelica, MC, Italy
External link: https://doi.org/10.1292/jvms.16-0400
Protocol Citation: Adolfo Maria TAMBELLA, Evelina SERRI, Fulvio LAUS, Anna Rita ATTILI 2018. Injectable autologous platelet-rich plasma for regenerative medicine in donkeys. protocols.io https://dx.doi.org/10.17504/protocols.io.ncbdasn
Manuscript citation:
Faillace V, Tambella AM, Fratini M, Paggi E, Dini F, Laus F. Use of autologous platelet-rich plasma for a delayed consolidation of a tibial fracture in a young donkey. The Journal of Veterinary Medical Science, 79(3), 2017: 618-622. (ISSN: 0916-7250) (DOI: 10.1292/jvms.16-0400)
License: This is an open access protocol distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
Protocol status: Working
We use this protocol and it's working
Created: February 19, 2018
Last Modified: March 28, 2018
Protocol Integer ID: 10339
Keywords: platelet-rich plasma, PRP, regenerative therapy, donkey
Abstract
A step-by-step procedure for autologous platelet-rich plasma production was developed for topical percutaneous injection in donkeys.
This protocol was used in the following publication:
Faillace V, Tambella AM, Fratini M, Paggi E, Dini F, Laus F. Use of autologous platelet-rich plasma for a delayed consolidation of a tibial fracture in a young donkey. The Journal of Veterinary Medical Science, 79(3), 2017: 618-622. (ISSN: 0916-7250) (DOI: 10.1292/jvms.16-0400)
Background
Background
The use of non-transfusional hemocomponents for tissue healing has gained increasing popularity for the treatment of musculoskeletal lesions in human and veterinary medicine [1]. Several non-transfusional hemocomponents are available for intralesional injection, including platelet-rich plasma (PRP), plasma rich in growth factors, platelet rich fibrin, platelet lysate, autologous conditioned serum, autologous blood preparations and autologous protein concentrate [2-4]. PRP is a good adjunctive therapy for the treatment of orthopedic and soft tissue conditions [5-11]. Non-unions, bone defects, tendinosis and cartilage defects are among musculoskeletal conditions lacking effective treatment modalities, and regenerative medicine may play an important role. Platelet rich plasma contains a variety of growth factors released from platelets, which increase vascular growth and have mitogenic effects on mesenchymal stem cells [12-16]. Clinical research on donkeys needs to be in continual development, since donkeys have different reactions in many conditions when compared to horses [17]. To our knowledge, PRP production and application is not commonly performed in donkeys, despite the high therapeutic potential of PRP application in this species.
This protocol was used in the following publication:
Faillace V, Tambella AM, Fratini M, Paggi E, Dini F, Laus F. Use of autologous platelet-rich plasma for a delayed consolidation of a tibial fracture in a young donkey. The Journal of Veterinary Medical Science, 79(3), 2017: 618-622. (ISSN: 0916-7250) (DOI: 10.1292/jvms.16-0400)
Autologous whole blood collection
Autologous whole blood collection
Collect autologous whole blood (50 ml) from the jugular vein into a 60mL syringe.
Add acid citrate dextrose solution (ACD-A) at a ratio of 1:9 achieving anticoagulation. ACD‐A solution contains sodium citrate bihydrate 22.0 g/L, citric acid monohydrate 8.0 g/L, glucose monohydrate 24.5 g/L in sterile water for injection.
Additionally, collect 10.5 ml whole blood in sodium citrate tubes (3.8%) to extract thrombin.
Complete blood count
Complete blood count
Use a small aliquot of whole blood for complete blood cell count.
First centrifugation
First centrifugation
For density separation of blood components, transfer the 50 ml specimen to a Falcon tube and spin at 350 units of gravitational force (x g) for 20 min.
First separation of blood components
First separation of blood components
Separate plasma and buffy coat layer and transfer in a Falcon tube under aseptic conditions in a laminar flow cabinet.
Second centrifugation
Second centrifugation
Spin the plasma and the buffy coat again at 900 x g for 15 min to separate the platelet pellet, in the bottom layer, from the platelet poor plasma (PPP) in the supernatant layer.
Second separation of blood components
Second separation of blood components
Discard part of the PPP, leaving in the tube 10mL volume.
Re-suspension of the solution
Re-suspension of the solution
Resuspend the platelet pellet in the PPP to obtain 10 ml of PRP.
PRP cell count
PRP cell count
Perform cellular count from PRP automatically.
Compare the mean platelet concentration in the PRP and in the whole blood.
Autologous thrombin preparation
Autologous thrombin preparation
To obtain the thrombin, mix the autologous plasma fraction and 10% calcium gluconate (446 mEq/l of calcium), at a ratio of 5:1, and incubate at 37°C for 30 min, in an air-jacketed CO2 incubator.
Squash the clot obtained and collect the final supernatant, the thrombin-rich solution.
PRP activation
PRP activation
Activate the PRP by mixing the PRP and the thrombin-rich solution (volumetric ratio 8:1) in a Falcon tube and gently rotate the tube.
Recommendations for laboratory conditions during the production phases
Recommendations for laboratory conditions during the production phases
Perform these laboratory procedures under aseptic conditions in a laminar flow cabinet following Good Laboratory Practice.
Sterility assay of the PRP product
Sterility assay of the PRP product
Evaluate aerobic, anaerobic and fungal contaminations by bacteriological and mycological exams of the PRP product.
Topical application of the PRP
Topical application of the PRP
Inject the PRP percutaneously in the target site, after application of routine aseptic skin preparation procedure. When necessary, the use of a guidance technique (e.g. diagnostic imaging) is recommended to accurately reach the appropriate injection site or the site of injury.
REFERENCES
REFERENCES
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