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Platelet-rich plasma

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https://www.readbyqxmd.com/read/29044680/effects-of-three-blood-derived-products-on-equine-corneal-cells-an-in-vitro-study
#1
J O Rushton, E Kammergruber, A Tichy, M Egerbacher, B Nell, S Gabner
BACKGROUND: Despite advances in therapy of corneal ulcerative diseases in horses, a vast number of cases require surgical intervention, due to poor response to treatment. Topical application of serum has been used for many years, based on its anti-collagenolytic properties and the presence of growth factors promoting corneal wound healing. However, although other blood derived products i.e. platelet rich plasma (PRP), plasma rich in growth factors (PRGF) have been widely used in equine orthopaedics and in human ophthalmology, no reports of the effects of these blood derived products exist in equine ophthalmology...
October 16, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/29040421/effect-of-use-of-platelet-rich-plasma-prp-in-skin-with-intrinsic-aging-process
#2
Luiz Charles-de-Sá, Natale Ferreira Gontijo-de-Amorim, Christina Maeda Takiya, Radovan Borojevic, Donatella Benati, Paolo Bernardi, Andrea Sbarbati, Gino Rigotti
Background: In previous papers, we demonstrated that the treatment of human photoaged skin with stromal-vascular fraction-enriched fat or expanded adipose-derived stem cells showed a decrease of elastosis and the appearance of new oxytalan elastic fibers in dermis and an increase in the vascular network. The utilization of fat plus platelet-rich plasma (PRP) led to an increase in the vascular permeability and reactivity of the nervous component. Objectives: The purpose of this study was to analyze the histologic and ultrastructural changes of human skin after the injection of only PRP in the retroauricular area that was not exposed to sun and did not present the photoaging process, in comparison with our previous results...
September 7, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29040132/a-call-for-standardization-in-platelet-rich-plasma-preparation-protocols-and-composition-reporting-a-systematic-review-of-the-clinical-orthopaedic-literature
#3
Jorge Chahla, Mark E Cinque, Nicolas S Piuzzi, Sandeep Mannava, Andrew G Geeslin, Iain R Murray, Grant J Dornan, George F Muschler, Robert F LaPrade
BACKGROUND: Platelet-rich plasma (PRP) is a blood-derived preparation whose use has grown exponentially in orthopaedic practice. However, there remains an unclear understanding of the biological properties and effects of PRP on musculoskeletal healing. Heterogeneous processing methods, unstandardized nomenclature, and ambiguous classifications make comparison among studies challenging. A comprehensive assessment of orthopaedic clinical PRP trials is key to unraveling the biological complexity of PRP, while improving standardized communication...
October 18, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29031987/intra-articular-injection-of-mesenchymal-stem-cells-and-platelet-rich-plasma-to-treat-patellofemoral-osteoarthritis-preliminary-results-of-a-long-term-pilot-study
#4
Julien Pintat, Alain Silvestre, Guy Magalon, Alain Pierre Gadeau, Lionel Pesquer, Anne Perozziello, Alain Peuchant, Charbel Mounayer, Benjamin Dallaudière
PURPOSE: To assess the feasibility and safety of concomitant intra-articular (IA) knee injection of mesenchymal stem cells (MSCs) and platelet-rich plasma (PRP) under fluoroscopic guidance to treat patellofemoral osteoarthritis (OA). MATERIALS AND METHODS: This prospective study included 19 consecutive patients referred for fluoroscopically guided IA MSC and PRP injection for symptomatic patellofemoral chondropathy in which conservative treatment had failed. Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score and magnetic resonance (MR) data, including T2 mapping sequence, were prospectively collected before and 6 months after treatment...
October 12, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/29031343/musculoskeletal-injuries-and-regenerative-medicine-in-the-elderly-patient
#5
REVIEW
John C Cianca, Prathap Jayaram
Regenerative medicine has gained increasing popularity in its clinical applications, particularly in the field of musculoskeletal medicine. Regenerative medicine, a broad term, can be thought of as a particular medical strategy that strives to rebuild and restore diseased tissue to normal physiologic tissue baseline. Simply put, regenerative strategies augment the body's innate physiology to heal pathologic processes. This article focuses on specific regenerative strategies and the uses of them for common pathologies in the aging adult, including platelet-rich plasma, mesenchymal stem cells, viscosupplementation, and prolotherapy...
November 2017: Physical Medicine and Rehabilitation Clinics of North America
https://www.readbyqxmd.com/read/29028107/platelet-rich-plasma-and-myocardial-regeneration
#6
M Spartalis, E Tzatzaki, N Nikiteas, E Spartalis
No abstract text is available yet for this article.
September 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29027360/preparation-of-hydrophilic-blood-compatible-polypropylene-pluronics-f127-films
#7
Mahsa Hakani, Vahid Haddadi-Asl, Seyed Shahrooz Zargarian, Mohamad Hossein Moghadasi
In order to improve surface hydrophilicity, blood compatibility and cell-anti adhesion of Polypropylene (PP) film, PPO-PEO-PPO used as macromolecular surface modifier through physical blending. Surface properties of blended PP/PF127 samples were investigated by attenuated total reflection infrared spectroscopy (ATR-FTIR) and water contact angle (WCA) measurements. Results demonstrated that pluronic F127 migrated to the surface. Thus, mechanical properties of blended PP/PF127 samples with the aim of the revealing the effects of the presence of modifier in the bulk were investigated through Differential Scanning Calorimetry (DSC), X-ray diffraction (XRD) and tensile tests...
October 13, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29027349/aerobic-exercise-training-lowers-platelet-reactivity-and-improves-platelet-sensitivity-to-prostacyclin-in-pre-and-postmenopausal-women
#8
M H Lundberg Slingsby, M Nyberg, J Egelund, C M Mandrup, R Frikke-Schmidt, N S Kirkby, Y Hellsten
BACKGROUND: The risk of atherothrombotic events increases after menopause. Regular physical activity has been shown to reduce platelet reactivity in younger women, but it is unknown how regular exercise affects platelet function after menopause. OBJECTIVES: To examine the effects of regular aerobic exercise in late pre- and recent postmenopausal women by testing basal platelet reactivity and platelet sensitivity to prostacyclin and nitric oxide. METHODS: 25 sedentary, but healthy, late premenopausal and 24 matched recently postmenopausal women, mean (95% confidence interval) 49...
October 12, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29026811/the-use-of-platelet-rich-plasma-for-storage-of-surplus-harvested-skin-grafts
#9
Ilknur Keskin, Nilufer Ayturk, Mustafa Sutcu, Mustafa Keskin, Tangul Mudok
BACKGROUND: There is a need for improved methods and storage media to sustain the tissue viability of autologous skin grafts. OBJECTIVE: To compare histological changes in human skin grafts stored in platelet-rich plasma (PRP) with those of grafts stored in saline. METHODS: Eight circular, 3-mm full-thickness skin graft samples were harvested from the abdominal skin of each of 5 patients scheduled to undergo an abdominoplasty procedure. Four of these graft samples were stored in saline, and the other 4 were stored in saline mixed with PRP prepared from the patient's own venous blood...
February 2017: Plastic Surgery
https://www.readbyqxmd.com/read/29026341/benefits-of-different-postoperative-treatments-in-patients-undergoing-knee-arthroscopic-debridement
#10
Cesáreo Trueba Vasavilbaso, Carlos David Rosas Bello, Erla Medina López, Maria Pilar Coronel Granado, José Mario Navarrete Álvarez, Cesáreo Angel Trueba Davalillo, Félix Isaac Gil Orbezo
PURPOSE: To assess the effectiveness of viscosupplementation or platelet-rich plasma (PRP), compared to standard care, for pain relief after knee arthroscopic debridement in patients with meniscal pathology and osteoarthritis (OA), under normal clinical practice conditions. PATIENTS AND METHODS: We conducted a prospective, randomized, evaluator-blind, pilot study. After arthroscopy, patients were randomized to receive 1) five injections of HA1 (Suprahyal(®)/Adant(®)); 2) four injections of HA2 (Orthovisc(®)); 3) three injections of HA3 (Synvisc(®)); 4) a single injection of PRP (GPS™ II); or 5) standard care (control)...
2017: Open Access Rheumatology: Research and Reviews
https://www.readbyqxmd.com/read/29025213/the-future-of-fat-grafting
#11
Farooq Shahzad, Babak J Mehrara
Fat grafting has emerged as an important tool in the armamentarium of plastic surgeons. Its applications in aesthetic and reconstructive surgery continue to expand. However, its limitations (such as inconsistent survival) remain problematic. Recent research efforts have focused on tacking these issues with the use of platelet rich plasma, hypoxic preconditioning, hyperbaric oxygen, and the tissue engineering of scaffolds. In the future, as these laboratory discoveries are translated to clinical application, the beneficial uses of fat grafting will continue to increase...
July 1, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29023589/light-transmission-aggregometry-using-pre-coated-microtiter-plates-and-a-victor-x5-plate-reader
#12
Pernille Just Vinholt, Mads Nybo, Camilla Brødsgaard Nielsen, Anne-Mette Hvas
BACKGROUND: Light transmission aggregometry (LTA) can be performed with microtiter plates (96-well LTA). When conducting LTA, an agonist is added to platelet-rich plasma and the sample is shaken for minutes after which absorbance readings are done. Platelet aggregation is detected as decrease in absorbance. However, the classical method is cumbersome and therefore microtiter plates can be used for concomitant testing of multiple samples. Furthermore, it would be convenient to prepare the plate in advance of platelet aggregation testing...
2017: PloS One
https://www.readbyqxmd.com/read/29023179/effect-of-platelet-rich-plasma-on-patients-after-blepharoplasty-surgery
#13
Fidelina Parra, David Enrique Morales-Rome, Rafael Campos-Rodríguez, Teresita Rocío Cruz-Hernández, Maria Elisa Drago-Serrano
AIM: To evaluate the effect of platelet-rich plasma (PRP) treatment on patients after blepharoplasty surgery. MATERIALS AND METHODS: After undergoing blepharoplasty, 20 patients were randomly divided into two groups (n = 10 each). One was treated with autologous PRP and the other was not given any post-surgery treatment (basal group). Autologous PRP application was performed intradermically 24 h, 1 month, and 2 months post-surgery, and the outcome of the applications was assessed 1, 2, and 3 months post-surgery...
October 12, 2017: Orbit
https://www.readbyqxmd.com/read/29022492/platelet-aggregation-impacts-thrombin-generation-assessed-by-calibrated-automated-thrombography
#14
Mélusine Didelot, Clémence Docq, Denis Wahl, Patrick Lacolley, Véronique Regnault, Jérémy Lagrange
A calibrated automated thrombogram (CAT) is performed usually with human platelet-free plasma (PFP) but may be more relevant with platelet-rich plasma (PRP). In this case, platelets are not stimulated by subendothelial molecules like collagen. Our aim was to assess the consequence of strong (collagen) or weak (ADP) induction of platelet release and aggregation on thrombin generation. Platelet aggregation in PRP was triggered with 10 µg/mL collagen or 10 µM ADP using a lumi-aggregometer. Thrombin generation curves were monitored by CAT in different conditions: PRP, PRP with activated platelets (actPRP), aggregated PRP (agPRP), aggregated platelets resuspended in autologous PFP (resPRP), PFP and PFP obtained after aggregation (agPFP)...
October 12, 2017: Platelets
https://www.readbyqxmd.com/read/29020977/platelet-rich-plasma-stimulates-angiogenesis-in-mice-which-may-promote-hair-growth
#15
Hanxiao Cheng, Jufang Zhang, Jinsheng Li, Ming Jia, Yuyan Wang, Haiyan Shen
BACKGROUND: Platelet-rich plasma (PRP) is an autologous concentration of human platelets in plasma. In this paper, we aimed to investigate the effect of PRP on hair growth. METHODS: Platelet-rich plasma and platelet-poor plasma were prepared by sterile centrifugation and injected into shaved dorsal skin of mice (n = 10). Saline injection was used in the control group. The length of randomly plucked hairs was measured at 8, 13, 18 days after PRP injection. Histological examination was preformed to observe the histologic changes of skins...
October 11, 2017: European Journal of Medical Research
https://www.readbyqxmd.com/read/29020691/erratum-comparison-of-platelet-rich-plasma-stromal-vascular-fraction-svf-or-svf-with-an-injectable-plga-nanofiber-scaffold-for-the-treatment-of-osteochondral-injury-in-dogs
#16
Samuel P Franklin, Aaron M Stoker, Chantelle C Bozynski, Keiichi Kuroki, Kevin M Clarke, Jed K Johnson, James L Cook
No abstract text is available yet for this article.
October 11, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29019941/the-contribution-of-adipose-tissue-derived-mesenchymal-stem-cells-and-platelet-rich-plasma-to-the-treatment-of-chronic-equine-laminitis-a-proof-of-concept
#17
Mario Angelone, Virna Conti, Cristiano Biacca, Beatrice Battaglia, Laura Pecorari, Francesco Piana, Giacomo Gnudi, Fabio Leonardi, Roberto Ramoni, Giuseppina Basini, Silvia Dotti, Sabrina Renzi, Maura Ferrari, Stefano Grolli
Laminitis, a highly debilitating disease of the foot in ungulates, is characterized by pathological changes of the complex lamellar structures that maintain the appendicular skeleton within the hoof. Laminitis is a multifactorial disease that involves perturbation of the vascular, hematological, and inflammatory homeostasis of the foot. Interestingly, the pathogenesis of the disease resembles what is observed in metabolic syndromes and sepsis-induced organ failure in humans and animals. We hypothesized that local administration of mesenchymal stem cells (MSCs) and platelet-rich plasma (PRP) might contribute to establishing an anti-inflammatory and pro-angiogenic environment, and could stimulate the injured tissue in order to restore its functional integrity...
October 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29019860/the-addition-of-prp-to-facial-lipofilling-a-double-blind-placebo-controlled-randomized-trial
#18
J C N Willemsen, J Van Dongen, M Spiekman, K M Vermeulen, M C Harmsen, B van der Lei, H P J D Stevens
BACKGROUND: Lipofilling is a treatment modality to restore tissue volume, but may also rejuvenate the aging skin. Platelet-rich plasma has been reported to augment the efficacy of lipofilling, both on graft take and rejuvenation by altering the ADSC. Authors hypothesized that PRP addition would increase the rejuvenating effect while shortening recovery time. METHODS: The study conducted was a single-centre, double blinded, placebo-controlled randomized trial (2012-2015)...
October 10, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29019594/allogeneic-mesenchymal-stem-cells-and-xenogenic-platelet-rich-plasma-associated-or-not-in-the-repair-of-bone-failures-in-rabbits-with-secondary-osteoporosis
#19
Mariá Andrade de Carvalho Rocha, Laís Meireles Costa Silva, Wellson Andrade de Oliveira, Dayseanny de Oliveira Bezerra, Gustavo Cardoso da Silva, Lucilene Dos Santos Silva, Brenda Lurian do Nascimento Medeiros, Sílvia de Araújo França Baêta, Maria Acelina Martins de Carvalho, Napoleão Martins Argôlo
PURPOSE: To assess the efficacy of allogeneic mesenchymal stem cells and xenogenic platelet rich plasma in the treatment of bone failure of osteoporotic rabbits secondary to estrogenic deprivation and iatrogenic hypercortisolism. METHODS: Eight female rabbits underwent ovarian resection and corticoid therapy to induce clinical status of osteoporosis. Four failures were produced in the tibiae, with each failure being treated with hemostatic sponge, allogenic mesenchymal stem cells, xenogenic platelet-rich plasma and the association between both...
September 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/29018808/tenogenically-induced-allogeneic-peripheral-blood-mesenchymal-stem-cells-in-allogeneic-platelet-rich-plasma-2-year-follow-up-after-tendon-or-ligament-treatment-in-horses
#20
Charlotte Beerts, Marc Suls, Sarah Y Broeckx, Bert Seys, Aurélie Vandenberghe, Jeroen Declercq, Luc Duchateau, Martin A Vidal, Jan H Spaas
Poor healing of tendon and ligament lesions often results in early retirement of sport horses. Therefore, regenerative therapies are being explored as potentially promising treatment for these injuries. In this study, an intralesional injection was performed with allogeneic tenogenically induced mesenchymal stem cells and platelet-rich plasma 5-6 days after diagnosis of suspensory ligament (SL) (n = 68) or superficial digital flexor tendon (SDFT) (n = 36) lesion. Clinical, lameness and ultrasonographic evaluation was performed at 6 and 12 weeks...
2017: Frontiers in Veterinary Science
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