Efficacy of leukocyte- and platelet-rich plasma gel (L-PRP gel) in treating osteomyelitis in a rabbit model

2012 ◽  
Vol 31 (6) ◽  
pp. 949-956 ◽  
Author(s):  
Guang-Yi Li ◽  
Ji-Min Yin ◽  
Hao Ding ◽  
Wei-Tao Jia ◽  
Chang-Qing Zhang
Keyword(s):  
Platelet Rich Plasma ◽  
Rabbit Model ◽  
Prp Gel

scholarly journals The effectiveness of platelet-rich plasma gel on full-thickness cartilage defect repair in a rabbit model

2021 ◽  
Vol 10 (3) ◽  
pp. 192-202
Author(s):  
Fathia Slimi ◽  
Wassim Zribi ◽  
Moez Trigui ◽  
Raja Amri ◽  
Nawrez Gouiaa ◽  
...  
Keyword(s):  
Cartilage Repair ◽  
Osteochondral Defect ◽  
Platelet Rich Plasma ◽  
Fibrous Tissue ◽  
Rabbit Model ◽  
Cartilage Regeneration ◽  
Scoring Systems ◽  
Trochlear Groove ◽  
Post Surgery ◽  
Prp Gel

Aims The present study investigates the effectiveness of platelet-rich plasma (PRP) gel without adjunct to induce cartilage regeneration in large osteochondral defects in a rabbit model. Methods A bilateral osteochondral defect was created in the femoral trochlear groove of 14 New Zealand white rabbits. The right knees were filled with PRP gel and the contralateral knees remained untreated and served as control sides. Some animals were killed at week 3 and others at week 12 postoperatively. The joints were harvested and assessed by Magnetic Resonance Observation of Cartilage Repair Tissue (MOCART) MRI scoring system, and examined using the International Cartilage Repair Society (ICRS) macroscopic and ICRS histological scoring systems. Additionally, the collagen type II content was evaluated by the immunohistochemical staining. Results After 12 weeks post-surgery, the defects of the PRP group were repaired by hyaline cartilage-like tissue. However, incomplete cartilage regeneration was observed in the PRP group for three weeks. The control groups showed fibrocartilaginous or fibrous tissue, respectively, at each timepoint. Conclusion Our study proved that the use of PRP gel without any adjuncts could successfully produce a good healing response and resurface the osteochondral defect with a better quality of cartilage in a rabbit model. Cite this article: Bone Joint Res 2021;10(3):192–202.

Autologous platelet-rich plasma (PRP) effect on intervertebral disc restoration: an experimental rabbit model

2018 ◽  
Vol 29 (3) ◽  
pp. 545-551 ◽  
Author(s):  
Ioannis D. Gelalis ◽  
Georgios Christoforou ◽  
Antonia Charchanti ◽  
Ioannis Gkiatas ◽  
Emilios Pakos ◽  
...  
Keyword(s):  
Intervertebral Disc ◽  
Platelet Rich Plasma ◽  
Rabbit Model ◽  
Autologous Platelet Rich Plasma ◽  
Autologous Platelet

Freeze-dried chitosan-platelet-rich plasma implants improve supraspinatus tendon attachment in a transosseous rotator cuff repair model in the rabbit

2018 ◽  
Vol 33 (6) ◽  
pp. 792-807 ◽  
Author(s):  
Gabrielle Deprés-Tremblay ◽  
Anik Chevrier ◽  
Martyn Snow ◽  
Scott Rodeo ◽  
Michael D Buschmann
Keyword(s):  
Rotator Cuff ◽  
Rotator Cuff Repair ◽  
Platelet Rich Plasma ◽  
Rabbit Model ◽  
Supraspinatus Tendon ◽  
Rotator Cuff Tears ◽  
Polymorphonuclear Cells ◽  
Post Surgery ◽  
Freeze Dried ◽  
Cuff Repair

Rotator cuff tears result in shoulder pain, stiffness, weakness and loss of motion. After surgical repair, high failure rates have been reported based on objective imaging and it is recognized that current surgical treatments need improvement. The aim of the study was to assess whether implants composed of freeze-dried chitosan (CS) solubilized in autologous platelet-rich plasma (PRP) can improve rotator cuff repair in a rabbit model. Complete tears were created bilaterally in the supraspinatus tendon of New Zealand White rabbits ( n = 4 in a pilot feasibility study followed by n = 13 in a larger efficacy study), which were repaired using transosseous suturing. On the treated side, CS-PRP implants were injected into the transosseous tunnels and the tendon itself, and healing was assessed histologically at time points ranging from one day to two months post-surgery. CS-PRP implants were resident within transosseous tunnels and adhered to tendon surfaces at one day post-surgery and induced recruitment of polymorphonuclear cells from 1 to 14 days. CS-PRP implants improved attachment of the supraspinatus tendon to the humeral head through increased bone remodelling at the greater tuberosity and also inhibited heterotopic ossification of the supraspinatus tendon at two months. In addition, the implants did not induce any detectable deleterious effects. This preliminary study provides the first evidence that CS-PRP implants could be effective in improving rotator cuff tendon attachment in a small animal model.

scholarly journals Evaluation of platelet-rich plasma gel as an angiogenesis-inducing agent in canineadvancement skin flaps

2020 ◽  
Vol 40 (6) ◽  
pp. 474-478
Author(s):  
Grazielle A.S. Aleixo ◽  
Maria C.O.C. Coelho ◽  
Telga L.A. Almeida ◽  
Márcia F. Pereira ◽  
Miriam N. Teixeira ◽  
...  
Keyword(s):  
Blood Vessel ◽  
Skin Color ◽  
Platelet Rich Plasma ◽  
Skin Flap ◽  
Skin Flaps ◽  
Experimental Conditions ◽  
Significant Difference ◽  
Experimental Group ◽  
Prp Gel ◽  
Made In

ABSTRACT: This work aimed to evaluate the effect of platelet-rich plasma (PRP) on advancement skin flaps in dogs regarding improvement of vascularization, with focus on increasing its viable area, since there are reports that it is a potential angiogenesis stimulator. The experimental group was composed of eight adult bitches, in which two advancement skin flaps were made in the ventral abdominal region. No product was applied in the control flap (CF), while PRP was used in the contralateral flap, called treated flap (TF). The areas were clinically evaluated every two days until the 7th postoperative day regarding skin color and presence of necrosis. At 10 days, both flaps were removed and submitted to histological examination and blood vessel morphometry. The vessels counted in each group were statistically analyzed by the F-test at 1% probability. Results showed no significant difference in macroscopic changes in the wound, or CF and TF vascularization, thus suggesting that PRP gel did not improve advancement skin flap angiogenesis in bitches under the experimental conditions in which this research was developed.

scholarly journals Efficacy of Platelet-Rich Plasma Containing Xenogenic Adipose Tissue-Derived Stromal Cells on Restoring Intervertebral Disc Degeneration: A Preclinical Study in a Rabbit Model

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Chao Ma ◽  
Ran Wang ◽  
Dingliang Zhao ◽  
Naikun Wang ◽  
Ying Han ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Intervertebral Disc ◽  
Disc Degeneration ◽  
Stromal Cells ◽  
Signal Intensity ◽  
Intervertebral Disc Degeneration ◽  
Platelet Rich Plasma ◽  
Rabbit Model ◽  
Control Group ◽  
Arterial Blood

Objective. Platelet-rich plasma (PRP) containing multiple growth factors is a promising strategy for disc degeneration. Thus, this study hypothesizes that the combination of PRP and adipose tissue-derived stromal cells (ADSCs) may repair degenerative disc more effectively than using each one of them alone. Methods. The model of early intervertebral disc degeneration was induced by annular puncture in the New Zealand rabbit. Autologous PRP was extracted from fresh arterial blood by using two centrifugation techniques. ADSC was offered by the Center for Clinic Stem Cell Research. Four weeks after the first experiment, PRP or ADSCs or a combination of PRP and ADSCs was injected into the punctured intervertebral disc. Four weeks later, disc height and signal intensity on T2-weighted magnetic resonance imaging (MRI) were assessed. Results. One month after puncture, we detected relatively narrow discs and lower signal intensity in MRI T2-weighted images. At four weeks after injection, the PRP-ADSC group statistically significantly restored discs, compared with PRP, ADSCs, or negative control group. Conclusions. The combination of PRP and ADSCs shows an effective potential to restore degenerated intervertebral discs in the rabbit.

Effectiveness of autologous platelet-rich plasma gel in the treatment of hard-to-heal leg ulcers: a randomised control trial

2019 ◽  
Vol 28 (10) ◽  
pp. 658-667 ◽  
Author(s):  
Domantas Rainys ◽  
Adas Cepas ◽  
Karolina Dambrauskaite ◽  
Irena Nedzelskiene ◽  
Rytis Rimdeika
Keyword(s):  
Platelet Rich Plasma ◽  
Size Reduction ◽  
Control Group ◽  
Leg Ulcers ◽  
Tissue Formation ◽  
Granulation Tissue Formation ◽  
Wound Contamination ◽  
Wound Size ◽  
Autologous Platelet Rich Plasma ◽  
Prp Gel

Objective: Regenerative medicine products such as autologous platelet-rich plasma (autologous PRP) gel may speed up the process of healing. Clinical studies show promising results in the treatment of diabetic foot ulcers (DFUs), however there is lack of scientific evidence of autologous PRP effectiveness in treating leg ulcers of other aetiology. This study evaluates the effectiveness of autologous PRP gel in the treatment of hard-to-heal leg ulcers compared with existing conventional treatment. Method: A prospective, randomised controlled, open-labelled clinical trial was carried out between 2014 and 2018. An eight-week study protocol was chosen or until 100% wound re-epithelialisation was observed. Wound size reduction, granulation tissue formation, microbiological wound bed changes and safety were evaluated. Results: A total of 69 patients (35 in the autologous PRP group and 34 in the control group) were included in the study; 25.71% of the autologous PRP group and 17.64% of control group had ulcers completely re-epithelialised (p>0.05). Wound size reduction in the autologous PRP group was 52.35% and 33.36% in the control group (p=0.003). The autologous PRP group showed superiority over conventional treatment in wound bed coverage with granulation (p=0.001). However, more frequent wound contamination was observed at the end of treatment in the autologous PRP group (p=0.024). No severe adverse events were noted during the study. Both treatment methods were considered equally safe. Conclusion: Topical application of autologous PRP gel in leg ulcers of various aetiology show beneficial results in wound size reduction and induces the granulation tissue formation. However, it is associated with more frequent microbiological wound contamination.

scholarly journals CLINICAL AND HISTOPATHOLOGICAL EVALUATION OF USING PLATELET-RICH PLASMA AND PLATELET-RICH FIBRIN MATRIX IN TREATMENT OF INDUCED CHRONIC OPEN WOUNDS IN BUCKS

2018 ◽  
Vol 11 (5) ◽  
pp. 337 ◽  
Author(s):  
Falah H Khalaf ◽  
Serwa Ibrahim Salih
Keyword(s):  
Chronic Wound ◽  
Platelet Rich Plasma ◽  
Healing Process ◽  
Experimental Period ◽  
Control Group ◽  
Full Thickness ◽  
Platelet Rich Fibrin ◽  
Fibrin Matrix ◽  
Four Square ◽  
Prp Gel

Objective: This study was designed to identify the effectiveness of platelet-rich plasma gel (PRP) and platelet-rich fibrin matrix (PRF) application on the induced open chronic full-thickness cutaneous wounds in goats.Methods: A total of 24 adult apparently healthy local breed bucks were used in this study. PRP gel and PRF matrix were prepared from whole blood at the time of treatment, four square full-thickness skin wounds (4 cm × 4 cm) on the dorsal sides of the back of each animal were created, by daily scratched to interrupt healing process continuation to prolong inflammatory reaction to form chronic wound, this surgical procedure was continued for 8 weeks to ensure the traditional chronicity wounds, after that they were treated by PRP gel in the first group (n=12), while PRF matrix was used in the second group (n=12). Each group was also subdivided into treatment (n=2 wounds) and control group (n=2 wounds) in each animal. The healing process was evaluated by clinical examination during experimental period and histologically in day 7, 14, 28, and 45 post operation.Conclusion: Both groups showed faster tissue repair and epithelialization in treatment groups compared to control groups. The results of this study confirmed PRP gel and PRF matrix application improved and accelerated cutaneous open chronic wound healing.

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