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Platelet Rich Blood

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https://www.readbyqxmd.com/read/29785390/platelet-rich-plasma-prp-for-the-treatment-of-vulvar-lichen-sclerosus-in-a-premenopausal-woman-a-case-report
#1
D Franic, Z Iternička, M Franić-Ivanišević
The use of platelet-rich plasma (PRP) for the treatment of lichen sclerosus (LS) in a 38-year-old premenopausal woman is reported. The diagnosis was confirmed histologically and the symptoms documented using the ICIQ Vaginal Symptoms Questionnaire (ICIQ-VS) and the Female Sexual Function Index (FSFI) questionnaire. PRP was prepared from autologous blood using the Regen Cellular Matrix Kit. PRP was administered twice over two months. Histology at follow-up one month after the second administration showed the epidermis was nearly normal and upper dermal cellularity had been restored...
April 2018: Case Reports in Women's Health
https://www.readbyqxmd.com/read/29782513/high-red-blood-cell-composition-in-clots-is-associated-with-successful-recanalization-during-intra-arterial-thrombectomy
#2
Jong Wook Shin, Hye Seon Jeong, Hyon-Jo Kwon, Kyu Sang Song, Jei Kim
We evaluated the composition of individual clots retrieved during intra-arterial thrombectomy in relation to recanalization success, stroke subtype, and the presence of clot signs on initial brain images. We analyzed clot and interventional data from 145 retrieval trials performed for 37 patients (69.5±14.0 years, 20 men, large artery atherosclerosis, n = 7; cardioembolism, n = 22; undetermined etiology, n = 8) who had undergone intra-arterial thrombectomy. Rates of clot retrieval and successful recanalization (Arterial Occlusive Lesion score of 2-3) for separate retrieval trials were evaluated...
2018: PloS One
https://www.readbyqxmd.com/read/29781765/individualized-titanium-mesh-combined-with-platelet-rich-fibrin-and-deproteinized-bovine-bone-a-new-approach-for-challenging-augmentation
#3
Jonas Lorenz, Sarah Al-Maawi, Robert Sader, Shahram Ghanaati
Autologous bone transfer is regarded as the gold standard for ridge augmentation before dental implantation, especially in severe bony defects caused by tumor resection or atrophy. In addition to the advantages of autologous bone, transplantation has several disadvantages, such as secondary operation, increased morbidity and pain. The present study reports, for the first time, a combination of a xenogeneic bone substitute (BO) with platelet-rich fibrin (PRF), which is a fully autologous blood concentrate derived from the patient's own peripheral blood by centrifugation...
May 21, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29780836/defining-platelet-rich-plasma-usage-by-team-physicians-in-elite-athletes
#4
David E Kantrowitz, Ajay S Padaki, Christopher S Ahmad, T Sean Lynch
Background: The indications for the use of platelet-rich plasma (PRP) are vaguely defined despite the frequency of its use as a treatment for athletes. While select studies have advocated for its efficacy, the majority of orthopaedic research conducted on the topic has been equivocal. Purpose: To define the use of PRP in elite athletes by team physicians from professional sports leagues. Study Design: Cross-sectional study. Methods: A survey assessing treatment timing, usage patterns, indications, and complications was generated by fellowship-trained sports medicine orthopaedic surgeons...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29777616/regenerative-endodontics-a-review
#5
REVIEW
S G Kim, M Malek, A Sigurdsson, L M Lin, B Kahler
The European Society of Endodontology and the American Association for Endodontists have released position statements and clinical considerations for regenerative endodontics. There is increasing literature on this field since the initial reports of Iwaya et al. (2001) and Banchs & Trope (2004). Endogenous stem cells from an induced periapical bleeding and scaffolds using blood clot, platelet rich plasma or platelet rich fibrin have been utilized in regenerative endodontics. This approach has been described as a 'paradigm shift" and considered the first treatment option for immature teeth with pulp necrosis...
May 19, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29772345/autologous-liquid-platelet-rich-fibrin-a-novel-drug-delivery-system
#6
REVIEW
Richard J Miron, Yufeng Zhang
There is currently widespread interest within the biomaterial field to locally deliver biomolecules for bone and cartilage regeneration. Substantial work to date has focused on the potential role of these biomolecules during the healing process, and the carrier system utilized is a key factor in their effectiveness. Platelet rich fibrin (PRF) is a naturally derived fibrin scaffold that is easily obtained from peripheral blood following centrifugation. Slower centrifugation speeds have led to the commercialization of a liquid formulation (liquid-PRF) resulting in an upper plasma layer composed of liquid fibrinogen/thrombin prior to clot formation that remains in its liquid phase for approximately 15 minutes until injected into bodily tissues...
May 14, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29766749/enhanced-sternal-healing-via-platelet-rich-plasma-and-biodegradable-gelatin-hydrogel
#7
Masafumi Shibata, Gen Takagi, Mitsuhiro Kudo, Jiro Kurita, Yoko Kawamoto, Yasuo Miyagi, Mikimoto Kanazashi, Takashi Sakatani, Zenya Naito, Yasuhiko Tabata, Masaaki Miyamoto, Takashi Nitta
Platelet-rich plasma (PRP) contains numerous growth factors and promotes bone fracture healing. The aim of this study was to evaluate the effectiveness of the controlled release of PRP from biodegradable gelatin hydrogel for promoting healing in a rabbit ischemic sternal model. PRP was prepared from the whole blood of a Japanese white rabbit. Sixteen rabbits were randomized into four groups (each n = 4) and all underwent median sternotomy and bilateral internal thoracic artery removal. Before the sternum was closed, the following solutions were applied between the sternum incisions in three of the groups: 30 mg of gelatin hydrogel incorporating 300 μL of phosphate-buffered saline, 300 μL of a solution form of PRP, or 30 mg of gelatin hydrogel incorporating 300 μL of PRP (PRP+Gel)...
May 16, 2018: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29763577/comparison-of-the-regenerative-effects-of-platelet-rich-fibrin-and-plasma-rich-in-growth-factors-on-injured-peripheral-nerve-an-experimental-study
#8
Damla Torul, Mehmet Cihan Bereket, Mehmet Emin Onger, Gamze Altun
PURPOSE: The aim of this study was to investigate the effects of platelet-rich fibrin (PRF) and plasma rich in growth factors (PRGF) on peripheral nerve injury in the early period of healing. MATERIAL AND METHODS: Thirty Wistar albino rats were used in this study. Rats were divided into control (C), damaged (D), PRF, and PRGF groups. The left sciatic nerves of each group were identified as group C. Crush-type injury was performed on the right sciatic nerves of the D, PRF, and PRGF groups...
April 20, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29761887/telomere-length-and-genetic-variations-affecting-telomere-length-as-biomarkers-for-facial-regeneration-with-platelet-rich-fibrin-based-on-the-low-speed-centrifugation-concept
#9
Cleopatra Nacopoulos, Kalliopi Gkouskou, Dimitrios Karypidis, Ioannis Vlastos, Anna-Maria Vesala, Joseph Choukroun, Richard J Miron, Emmanuel Prokopakis
BACKGROUND: Platelet-Rich Fibrin (PRF), a fibrin matrix produced by single blood centrifugation that contains leukocytes, platelets, and growth factors, is increasingly being utilized for facial regeneration purposes. However, our understanding of the involved pathophysiological mechanisms affecting regeneration is limited and current protocols require better optimization. Biomarkers that are related to skin aging such as telomere length (TL) have been proposed as a mean to analyze patients' stratification...
May 15, 2018: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/29760725/the-effects-of-hyperacute-serum-on-the-elements-of-the-human-subchondral-bone-marrow-niche
#10
Melinda Simon, Bálint Major, Gabriella Vácz, Olga Kuten, István Hornyák, Adél Hinsenkamp, Dorottya Kardos, Marcell Bagó, Domonkos Cseh, Adrienn Sárközi, Denes Horvathy, Stefan Nehrer, Zsombor Lacza
Mesenchymal stem cells (MSCs) are widely used in laboratory experiments as well as in human cell therapy. Their culture requires animal sera like fetal calf serum (FCS) as essential supplementation; however, animal sera pose a risk for clinical applications. Human blood derivatives, for example, platelet-rich plasma (PRP) releasates, are potential replacements of FCS; however, it is unclear which serum variant has the best effect on the given cell or tissue type. Additionally, blood derivatives are commonly used in musculoskeletal diseases like osteoarthritis (OA) or osteonecrosis as "proliferative agents" for the topical MSC pool...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29755531/adjunctive-platelet-rich-plasma-prp-in-infrabony-regenerative-treatment-a-systematic-review-and-rct-s-meta-analysis
#11
REVIEW
Mubashir Saleem, Flavio Pisani, Faisal Maqbool Zahid, Ioannis Georgakopoulos, Teuta Pustina-Krasniqi, Edit Xhajanka, Maher Almasri
Background and Objective: The purpose of this study was to highlight the clinical performance of platelet-rich plasma (PRP) used as an adjunctive tool for regeneration in infrabony periodontal defects using different biomaterials or performing different surgical flap approaches. Comparative evaluation of main clinical outcomes as probing pocket depth reduction, clinical attachment gain, and recession reduction with and without the use of PRP has been analysed. Materials and Methods: According to the focused question, an electronic and hand searching has been performed up to December 2016...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29741923/effect-of-intraoperative-platelet-rich-plasma-treatment-on-postoperative-donor-site-knee-pain-in-patellar-tendon-autograft-anterior-cruciate-ligament-reconstruction-a-double-blind-randomized-controlled-trial
#12
Brian L Walters, David A Porter, Sarah J Hobart, Benjamin B Bedford, Daniel E Hogan, Malachy M McHugh, Devon A Klein, Kendall Harousseau, Stephen J Nicholas
BACKGROUND: Donor site morbidity in the form of anterior knee pain is a frequent complication after bone-patellar tendon-bone (BPTB) autograft anterior cruciate ligament (ACL) reconstruction. Hypothesis/Purpose: The purpose was to examine the effect of the intraoperative administration of platelet-rich plasma (PRP) on postoperative kneeling pain. It was hypothesized that PRP treatment would reduce knee pain. STUDY DESIGN: Randomized controlled trial; Level of evidence, 2...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29741564/replacement-of-dietary-saturated-fat-with-unsaturated-fats-increases-numbers-of-circulating-endothelial-progenitor-cells-and-decreases-numbers-of-microparticles-findings-from-the-randomized-controlled-dietary-intervention-and-vascular-function-divas-study
#13
Michelle Weech, Hana Altowaijri, Jordi Mayneris-Perxachs, Katerina Vafeiadou, Jacqueline Madden, Susan Todd, Kim G Jackson, Julie A Lovegrove, Parveen Yaqoob
Background: Endothelial progenitor cells (EPCs) and microparticles are emerging as novel markers of cardiovascular disease (CVD) risk, which could potentially be modified by dietary fat. We have previously shown that replacing dietary saturated fatty acids (SFAs) with monounsaturated or n-6 (ω-6) polyunsaturated fatty acids (MUFAs or PUFAs, respectively) improved lipid biomarkers, blood pressure, and markers of endothelial activation, but their effects on circulating EPCs and microparticles are unclear...
May 8, 2018: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29740270/therapeutic-effect-of-platelet-rich-plasma-in-rat-spinal-cord-injuries
#14
Nan-Fu Chen, Chun-Sung Sung, Zhi-Hong Wen, Chun-Hong Chen, Chien-Wei Feng, Han-Chun Hung, San-Nan Yang, Kuan-Hao Tsui, Wu-Fu Chen
Platelet-rich plasma (PRP) is prepared by centrifuging fresh blood in an anticoagulant state, and harvesting the platelet-rich portion or condensing platelets. Studies have consistently demonstrated that PRP concentrates are an abundant source of growth factors, such as platelet-derived growth factor (PDGF), transforming growth factor β (TGF-β), insulin-like growth factor 1 (IGF-1), and epithelial growth factor (EGF). The complex mechanisms underlying spinal cord injury (SCI) diminish intrinsic repair and neuronal regeneration...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29737237/blood-plasma-derivatives-for-tissue-engineering-and-regenerative-medicine-therapies
#15
Sara Santos, Olafur E Sigurjonsson, Catarina Custodio, João Filipe Colardelle da Luz Mano
Platelet-rich plasma (PRP) and its derivatives have been investigated and applied in regenerative medicine. The use of PRP as a supplement of cell culture media has consistently shown to potentiate stem cell proliferation, migration, and differentiation. In addition, the clinical utility of PRP is supported by evidence that PRP contains high concentrations of growth factors and proteins which contribute to the regenerative process. PRP based therapies are cost effective and also benefit from the accessibility and safety of using the patient's own growth factors...
May 8, 2018: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/29737075/-adjusting-platelet-counts-for-platelet-aggregation-tests
#16
Li-Qin Ling, Xin-Chun Yang, Hao Chen, Chao-Nan Liu, Si Chen, Hong Jiang, Ya-Xiong Jin, Jing Zhou
OBJECTIVE: To explore a better method to adjust platelet counts for light transmission aggregometry (LTA). METHODS: Blood samples from 36 healthy participants aged from 18 to 50 yr. were collected.Platelet-rich plasma (PRP) was diluted using platelet-poor plasma (PPP) and physiological saline (PS),respectively,in a ratio of 1.5,2,2.5 and 3 times. Platelet aggregation was induced by adenosine diphosphate (ADP),arachidonic acid (ARA),collagen (COL), epinephrine (EPI),or ristocetin (RIS)...
March 2018: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29736577/prp-therapy
#17
Ibrahim Fatih Cengiz, J Miguel Oliveira, Rui L Reis
Osteochondral lesions remain as a clinical challenge despite the advances in orthopedic regenerative strategies. Biologics, in particular, platelet-rich plasma, has been applied for the reparative and regenerative effect in many tissues, and osteochondral tissue is not an exception. Platelet-rich plasma is an autologous concentrate prepared from the collected blood; thus, this safe application is free of immune response or risk of transmission of disease. It has a high potential to promote regeneration, thanks to its content, and can be applied alone or can reinforce a tissue engineering strategy...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29730840/technical-and-clinical-feasibility-of-contrast-enhanced-ultrasound-evaluation-of-long-bone-non-infected-nonunion-healing
#18
Simona Pozza, Armanda De Marchi, Chiara Albertin, Domenico Albano, Ginevra Biino, Domenico Aloj, Luca Maria Sconfienza
PURPOSE: To assess the technical feasibility of contrast-enhanced ultrasound (CEUS) in the monitoring of non-infected long bone nonunion healing. METHODS: Twenty-five patients (16 males; mean age: 40.4 ± 11.7) with long bone nonunion were treated using surgery and mesenchymal stem cells and platelet-rich plasma. They performed CEUS up to 15 days before, 7 days, 4 and 8 weeks after treatment. To categorize the angiogenesis around the fracture site, the microvascular blood flow from CEUS was classified into four categories, depending on the portion of the investigated area that was involved in the neovascularization process: grade 0 = 0%; grade 1 = 0-30%; grade 2 = 30-70%; grade 3 = 70-100%...
May 5, 2018: La Radiologia Medica
https://www.readbyqxmd.com/read/29719011/short-term-storage-of-platelet-rich-plasma-at-room-temperature-does-not-affect-growth-factor-or-catabolic-cytokine-concentration
#19
Brooke H Wilson, Brian J Cole, Margaret B Goodale, Lisa A Fortier
The aim of this study was to provide clinical recommendations about the use of platelet-rich plasma (PRP) that was subjected to short-term storage at room temperature. We determined bioactive growth factor and cytokine concentrations as indicators of platelet and white blood cell degranulation in blood and PRP. Additionally, this study sought to validate the use of manual, direct smear analysis as an alternative to automated methods for platelet quantification in PRP. Blood was used to generate low-leukocyte PRP (Llo PRP) or high-leukocyte PRP (Lhi PRP)...
April 2018: American Journal of Orthopedics
https://www.readbyqxmd.com/read/29714492/gum-drop-technique-minimally-invasive-soft-tissue-platelet-rich-plasma-grafting-for-marginal-soft-tissue-recession
#20
Delia Tuttle, Gregori Kurtzman, Ana Luisa Bernotti
Minimally invasive techniques for treatment of marginal soft-tissue recession, or root recession, are conducive to lower morbidity and less postoperative discomfort than techniques that employ surgical flaps. The gum drop technique (GDT) is a novel soft-tissue grafting procedure that combines minimally invasive incisions with blood derivatives from the patient to achieve root coverage. Demonstrating favorable healing without the need for a donor site to provide connective tissue, this papilla-preserving approach offers the benefits of an autogenous, biologically enhanced procedure...
May 2018: Compendium of Continuing Education in Dentistry
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