Evaluation of the effect of subtenon autologous platelet-rich plasma injections on visual functions in patients with retinitis pigmentosa

2021 ◽  
Author(s):  
Esra Sahli ◽  
Umut Arslan ◽  
Emin Özmert ◽  
Aysun İdil
Keyword(s):  
Growth Factors ◽  
Retinitis Pigmentosa ◽  
Platelet Rich Plasma ◽  
The Other ◽  
Favorable Effect ◽  
Visual Functions ◽  
Significant Difference ◽  
Fixation Stability ◽  
Autologous Platelet Rich Plasma ◽  
Autologous Platelet

Aim: The photoreceptors in retinitis pigmentosa (RP) remain in dormant status for a while with a decrease in the growth factors in their microenvironment before apoptosis. Growth factors reduce retinal degeneration and apoptosis in animal models. Materials & methods: The data of 188 eyes of 94 patients who were injected with autologous platelet-rich plasma (PRP) into the subtenon space three-times every 2 weeks were evaluated retrospectively. Results: Statistically significant improvements in visual acuity, visual field and fixation stability were detected after treatment. When the treatment response of the patients' better-seeing eye compared with the response of the other eye, there was no statistically significant difference. Conclusion: The PRP treatment has a favorable effect on visual functions in patients with RP. This approach is promising as it is safe and easy.

scholarly journals ROLE OF PLATELET RICH PLASMA IN TREATMENT OF CHRONIC NON-HEALING VENOUS ULCER

2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Firdaus A. Dekhaiya ◽  
Jignesh K. Joshi ◽  
Sarav Bamania
Keyword(s):  
Growth Factors ◽  
Platelet Rich Plasma ◽  
Autologous Blood ◽  
Healing Process ◽  
Venous Ulcer ◽  
Lower Limbs ◽  
Venous Ulcers ◽  
Autologous Platelet Rich Plasma ◽  
Adhesive Proteins ◽  
Autologous Platelet

Introduction: Venous ulcers are wounds that are thought to occur due to improper functioning of venous valves, usually of the lower limbs. Considering that PRP is a source of growth factors, and consequently has mitogenic, angiogenic, and chemotactic properties, it represents an adjunctive treatment for recalcitrant wounds. Moreover, PRP provides the wound with adhesive proteins, such as fibrinogen, which are important in wound healing. PRP contain more amount of platelets, cytokines and growth factors which are dispersed in a very small amount of plasma which can be prepared from a sample of centrifuged autologous blood. Application of PRP has been reported to be effective in both acute as well as chronic non healing venous ulcers. Aim and Objective: To evaluate the efficacy of autologous platelet rich plasma in the management of chronic venous ulcer. Material and Method: A Prospective study conducted on 100 patients of chronic venous ulcers admitted in Sir T. Hospital Bhavnagar from June 2018 to June 2019 after fulfilled our inclusion and exclusion criteria. PRP then injected intalesionally inside and around the periphery of the wound/ulcer. This process was done once/week for 12 weeks. At every week, the area and volume of ulcer was calculated and photographs were taken. Result: All the patients showed healing of the ulcer with reduction in size of ulcer more than 90% was observed in 72 patients, followed by 80–90% reduction in wound size in 18 patients after the 12 weeks follow-up. Overall, significant reduction in size of ulcer was observed in all the treated patients. Conclusion: Autologous platelet rich plasma (PRP) as an autologous method, it is biocompatible, simple, safe, affordable and less expensive procedure in the treatment of chronic venous ulcers. PRP is found to be useful in improving and enhancing the healing process in chronic venous leg ulcers without any side effect. Keywords:  Venous ulcer, Platelet rich plasma

scholarly journals Comparison of Allogeneic Platelet-rich Plasma With Autologous Platelet-rich Plasma for the Treatment of Diabetic Lower Extremity Ulcers

2020 ◽  
Vol 29 ◽  
pp. 096368972093142
Author(s):  
Min He ◽  
Xuewen Guo ◽  
Tao Li ◽  
Xiaoyan Jiang ◽  
Yan Chen ◽  
...  
Keyword(s):  
Wound Healing ◽  
Lower Extremity ◽  
Adverse Reactions ◽  
Chronic Wounds ◽  
Platelet Rich Plasma ◽  
Ankle Brachial Index ◽  
Nutritional Regulation ◽  
Significant Difference ◽  
Autologous Platelet Rich Plasma ◽  
Autologous Platelet

Autologous platelet-rich plasma (au-PRP) has been widely used for the management of refractory chronic wounds. However, patients with diabetic lower extremity ulcers (DLEUs) usually have complicated clinical conditions, and the utility of au-PRP is limited. In this study, the feasibility, effectiveness, and safety of allogeneic platelet-rich plasma (al-PRP) and au-PRP were investigated and compared in the treatment of DLEUs. A total of 75 in-patients with type 2 diabetes were assigned to the al-PRP group ( n = 20), au-PRP group ( n = 25), and conventional wound therapeutic (CWT) group ( n = 30) matched by the ankle brachial index and ulcer size from December 2015 to August 2018. Based on metabolic and nutritional regulation, infective control, and topical wound management, al-PRP, au-PRP, and CWT were administered to each group, respectively. Evaluation of treatment outcomes was determined by the parameters of wound healing and adverse reactions. The therapeutic times and average concentration of platelets were not significantly different between the au-PRP and al-PRP groups. The wound healing times of the al-PRP group (56.9 ± 29.22 d) and au-PRP group (55.6 ± 33.8 d) were significantly shorter than those of the CWT group (88.0 ± 43.4 d) ( P < 0.01), but there was no significant difference between the groups with PRP treatment. Although there was no significant difference in the daily healing area among all groups ( P > 0.05), the trend of the healing rate in the al-PRP group (16.77 ± 12.85 mm2), au-PRP group (14.31 ± 18.28 mm2), and CWT group (9.90 ± 8.51 mm2) gradually decreased. No obvious adverse reactions (fever, edema, pain, skin itching, rash, or other sensory abnormalities) were observed in either the au-PRP or the al-PRP groups. Both al-PRP and au-PRP could effectively and safely promote wound healing in patients with DLEUs. Alternatively, al-PRP could be used for DLEUs as an off-the-shelf solution when au-PRP is limited. Registration number of clinical trials: ChiCTR1900021317

scholarly journals REPARATIVE PROCESSES FEATURES IN TROPHIC ULCERS CAUSED BY DIABETES MELLITUS WITH THE USE OF PLATELET-RICH PLASMA

2020 ◽  
Vol 73 (10) ◽  
pp. 2150-2155
Author(s):  
Igor D. Duzhiy ◽  
Andrii S. Nikolaienko ◽  
Vasyl M. Popadynets ◽  
Oleksandr V. Kravets ◽  
Igor Y. Hresko ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Growth Factors ◽  
Comparison Group ◽  
Platelet Rich Plasma ◽  
Main Group ◽  
Lower Limbs ◽  
Before And After ◽  
Autologous Platelet Rich Plasma ◽  
Inflammatory Changes ◽  
Autologous Platelet

The aim: Was following: the improvement of the treatment results of the lower limbs ulcers, caused by the diabetes mellitus by using our technique of the platelet-rich plasma application; the study of the features of the morphological and immunohistochemical changes, and the effect of the growth factors of the platelet-rich plasma on the regeneration and healing of the ulcers. Materials and methods: 38 patients with the trophic ulcers of the lower limbs, caused by diabetes mellitus were involved in the study. To assess the morphological features of the reparative processes before and after the treatment with PRP, the histological and immunohystochemical studies of the biopsy specimen of ulcers were carried out. Results: The total epithelialization of the ulcers in the patients from the main group was achieved on 46.5 day, and in the comparison group – 81.7 day. The light and optical study of the specimen of the main group, using the autologous platelet-rich plasma revealed the elimination of the destructive changes and reduction of the mixed-cellular infiltration compared to the patients from the comparison group. The immunohystochemical study revealed the increase of the growth factors receptors. Conclusions: The usage of the autologous platelet-rich plasma in the treatment of the trophic ulcers results in the rapid regeneration by the decrease of the destructive and inflammatory changes as well as the improvement of the vascularization.

The haemostatic effectiveness of autologous platelet rich plasma sequestered after heparin administration and institution of cardiopulmonary bypass

Perfusion ◽  
1995 ◽  
Vol 10 (2) ◽  
pp. 101-110 ◽  
Author(s):  
RL Quigley ◽  
JA Perkins ◽  
JA Caprini ◽  
El Haney ◽  
SS Switzer ◽  
...  
Keyword(s):  
Cardiopulmonary Bypass ◽  
Blood Loss ◽  
Platelet Rich Plasma ◽  
Homologous Blood ◽  
Homologous Blood Transfusion ◽  
Heparin Administration ◽  
Significant Difference ◽  
Autologous Platelet Rich Plasma ◽  
Induced Aggregation ◽  
Autologous Platelet

Preoperative harvesting and postoperative reinfusion of autologous platelet rich plasma (PRP) has been reported to decrease blood loss as well as the requirement for homologous blood transfusion following cardiopulmonary bypass (CPB). We have developed a technique of intraoperative PRP sequestration which occurs during the initial period of CPB after the patient's circulation is supported and heparin has been given (PRP+). This process does not require any additional hardware, personnel or expense and it is performed without difficulty or complication. To evaluate the effect of PRP+ sequestration and reinfusion on blood loss and homologous blood requirement after CPB, we randomly assigned 126 consecutive patients undergoing elective open heart surgery into the experimental group 1 (PRP+) (n = 64) or the control (no platelet pheresis) group 2 (n = 52). A third group (n = 10) were not included in the randomization. Patients in group 3 had PRP prepared by conventional techniques (PRPc) prior to heparin administration and given to the patient after protamine infusion. Aggregation and activation studies were performed on the PRP+, PRPc, and blood bank platelets (BBP). Per cent aggregation of PRP in response to ADP was superior to that of BBP. There were no significant differences in ADP induced aggregation between PRP+ and PRPc. There was no significant difference in platelet activation (CD62) or number between the three groups. Patients infused with PRP+ showed significantly increased aggregation to ADP when compared with untreated patients 120 minutes after return to the ICW. Furthermore, more homologous haemostatic components (platelets/fresh frozen plasma) were required in the control group. We have demonstrated that collection of autologous PRP+ after administration of heparin does not interfere with its haemostatic effectiveness compared with PRPc prepared before the initiation of bypass. Moreover, this can be performed universally in haemodynamically unstable patients without any additional costs.

Autologous platelet-rich plasma versus readymade growth factors in skin rejuvenation: A split face study

2017 ◽  
Vol 16 (2) ◽  
pp. 258-264 ◽  
Author(s):  
Heba I Gawdat ◽  
Amira M Tawdy ◽  
Rehab A Hegazy ◽  
Mohga M Zakaria ◽  
Ryham S Allam
Keyword(s):  
Growth Factors ◽  
Platelet Rich Plasma ◽  
Skin Rejuvenation ◽  
Autologous Platelet Rich Plasma ◽  
Autologous Platelet ◽  
Split Face

scholarly journals A comparative study between local injection of autologous platelet rich plasma and injection of corticosteroid in functional improvement of plantar fasciitis

2019 ◽  
Vol 6 (3) ◽  
pp. 653 ◽  
Author(s):  
Vithal Prakash Puri ◽  
Anil Kumar Gaur
Keyword(s):  
Plantar Fasciitis ◽  
Platelet Rich Plasma ◽  
Tertiary Care ◽  
Functional Improvement ◽  
Significant Difference ◽  
Group A ◽  
Autologous Platelet Rich Plasma ◽  
Group B ◽  
Autologous Platelet

Background: Plantar fasciitis is a common cause of heel pain in adults. Although it is usually a self-limiting condition, the pain may become prolonged and severe enough to cause significant distress and disruption to the patient’s daily activities and work. The primary objective of the study was to evaluate and compare the effectiveness of autologous platelet rich plasma (PRP) and steroid injections in chronic cases of plantar fasciitis (PF).Methods: A prospective, randomized study was conducted from December 2013 to December 2015 amongst 60 patients with chronic PF were randomized prospectively in single tertiary care center in India. All the patients were enrolled according to inclusion criteria and divided into 2 groups i.e. group A (n=30) received PRP and group B (n=30) received corticosteroids injections. Roles and Maudsley score (RM Score) and Foot Function Index (FFI) was evaluated for all the included patients. The follow-up scheduled at 1 and 6 months after complete enrolment of patients.Results: Between both the groups, the significant difference was observed at 1 and 6 months follow-up from the baseline. At 1-month follow-up, statistically significant improvement in mean RM scores were seen in both the groups from baseline and when RM scores were compared between two groups, group B had statistically better mean scores. At 1-month follow-up there was no statistically significant difference between the mean FFI score values between two groups. At 6-month follow-up, statistically significant improvement in mean FFI scores were seen in both the groups, however when both groups were compared to each other, improvement in mean FFI scores was statistically better in group A as compared to group B.Conclusions: The present study concluded the use of PRP in chronic cases of plantar fasciitis seems more safe and effective in long term than the traditional treatment of steroid injection at different time period.

scholarly journals Evaluation of graft uptake using temporalis fascia and cartilage perichondrium supplemented with autologous platelet rich plasma in tympanoplasty

2021 ◽  
Vol 7 (2) ◽  
pp. 308
Author(s):  
N. R. Ankle ◽  
Rajesh Radhakrishna Havaldar ◽  
Sweta Sinha
Keyword(s):  
Growth Factors ◽  
Mechanical Stability ◽  
Platelet Rich Plasma ◽  
Donor Site ◽  
Chronic Otitis Media ◽  
Temporalis Fascia ◽  
Autologous Platelet Rich Plasma ◽  
Operative Assessment ◽  
Autologous Platelet ◽  
And Cartilage

<p class="abstract"><strong>Background:</strong> Tympanoplasty involves grafting the perforation of the tympanic membrane with materials such as temporalis fascia, cartilage perichondrium, periosteum, vein, fat etc. Both temporalis fascia and cartilage perichondrium are easy to harvest with minimum donor site complications and both have been used extensively in tympanoplasty. Platelet rich plasma aids as an adhesive and supplements healing by providing growth factors. Till date there is scarcity of literature comparing the healing outcome of both cartilage perichondrium and temporalis fascia supplemented with platelet rich plasma. Hence, in this study we are comparing cartilage perichondrium supplemented with platelet rich plasma and temporalis fascia supplemented with platelet rich plasma.  </p><p class="abstract"><strong>Methods:</strong> An observational study involving 60 patients was done. Patients with chronic otitis media were evaluated by otoendoscopy to assess the ear and were categorised into 2 groups which received temporalis fascia and cartilage perichondrium respectively. All cases were supplemented with platelet rich plasma. Post-operative assessment was done by otoendoscopy.   </p><p class="abstract"><strong>Results:</strong> Total 21 patients received temporalis fascia and 39 patients received cartilage perichondrium. At the end of 6 weeks the graft site appeared unhealthy in 6.66% cases who received temporalis fascia and 1.66% in those who received cartilage perichondrium.  </p><p class="abstract"><strong>Conclusions:</strong> We found that cartilage perichondrium supplemented with platelet rich plasma had a better uptake after 6 weeks due to its superior mechanical stability. The results are more rewarding than the use of temporalis fascia with platelet rich plasma.</p>

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