1
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Zhang X, Lang Z. Clinical Study on the treatment of chronic infectious ulcers using Platelet-Rich technology combined with moist dressings. Pak J Med Sci 2024; 40:1443-1447. [PMID: 39092025 PMCID: PMC11255822 DOI: 10.12669/pjms.40.7.8468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 11/13/2023] [Accepted: 03/27/2024] [Indexed: 08/04/2024] Open
Abstract
Objective To explore the clinical efficacy of platelet-rich technology combined with moist dressings in the treatment of chronic infectious ulcers. Methods This was a retrospective study. The subjects of the study were 48 patients with chronic infectious ulcers in Sichuan Provincial Orthopedics Hospital from January 2019 to June 2022. Enrolled patients were randomly divided into four groups(n=12), and received different treatment methods respectively. Further analysis and comparison were performed on the changes in wound volume, wound healing status, wound bacterial culture results, and the incidence of adverse reactions among the four groups. Results Three months after debridement, the wound volume of all four groups of patients was significantly reduced compared with that before debridement, with a statistically significant difference in intra-Group-Comparison(P<0.05). The inter-Group-Comparison revealed a statistically significant difference in wound volume in Group-A, Group-B, and Group-C than that in Group-D(P<0.05). After treatment, the wound healing status of patients in groups A, B, and C was significantly better than that of patients in Group-D, with a statistically significant difference(P<0.05). During treatment, patients in all four groups had decreased count of would bacteria, and showed negative results of wound bacterial culture by the three-month follow-up. No serious adverse reactions were observed in the four groups during treatment, and all improved after management, with no statistically significant difference in the incidence of adverse reactions(P>0.05). Conclusion Platelet-rich technology combined with moist dressings may effectively promote the repair of chronic infectious ulcer wounds, with good clinical safety.
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Affiliation(s)
- Xu Zhang
- Xu Zhang, Department of Orthopedics, Sichuan Provincial Orthopedics Hospital, Chengdu 610000, Sichuan, China
| | - Zhigang Lang
- Zhigang Lang, Department of Orthopedics, Sichuan Provincial Orthopedics Hospital, Chengdu 610000, Sichuan, China
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2
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Cl K, Jeyaraman M, Jeyaraman N, Ramasubramanian S, Khanna M, Yadav S. Antimicrobial Effects of Platelet-Rich Plasma and Platelet-Rich Fibrin: A Scoping Review. Cureus 2023; 15:e51360. [PMID: 38292974 PMCID: PMC10825076 DOI: 10.7759/cureus.51360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/30/2023] [Indexed: 02/01/2024] Open
Abstract
Platelet-rich plasma (PRP), derived from the centrifugation and subsequent separation of whole blood, results in an unusually high concentration of platelets. A newer form of platelet concentrate, platelet-rich fibrin (PRF), has also been developed. There has been significant research into the therapeutic effects of PRP, particularly in enhancing wound healing and preventing infections in surgical wounds. This scoping review aims to thoroughly evaluate preclinical and clinical evidence regarding the antimicrobial effects of PRP and PRF. In conducting this review, 612 records were examined, and 36 articles were selected for inclusion. The studies reviewed include preclinical research, such as in-vitro and in-vivo studies, and clinical trials involving human participants. The current clinical evidence suggests a notable trend towards the antimicrobial capabilities of PRP and PRF, underscoring their potential benefits in treating wounds. The application of PRP and PRF in wound management shows encouraging outcomes, but further investigation is needed to optimize their use as antimicrobial agents. Additional research, particularly randomized controlled trials, is essential to substantiate their antimicrobial effectiveness in specific diseases and types of wounds, considering their potential impact on clinical results.
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Affiliation(s)
- Karan Cl
- Orthopaedics, Sanjay Gandhi Institute of Trauma & Orthopaedics, Bengaluru, IND
| | - Madhan Jeyaraman
- Orthopaedics, ACS Medical College and Hospital, Dr. MGR Educational and Research Institute, Chennai, IND
| | - Naveen Jeyaraman
- Orthopaedics, ACS Medical College and Hospital, Dr. MGR Educational and Research Institute, Chennai, IND
| | | | - Manish Khanna
- Orthopaedics, Autonomous State Medical College, Ayodhya, IND
| | - Sankalp Yadav
- Internal Medicine, Shri Madan Lal Khurana Chest Clinic, New Delhi, IND
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3
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Gautam I, Huss CW, Storad ZA, Krebs M, Bassiouni O, Ramesh R, Wuescher LM, Worth RG. Activated Platelets Mediate Monocyte Killing of Klebsiella pneumoniae. Infect Immun 2023; 91:e0055622. [PMID: 36853027 PMCID: PMC10016073 DOI: 10.1128/iai.00556-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 02/02/2023] [Indexed: 03/01/2023] Open
Abstract
Platelets are known for essential activities in hemostasis and for their important contribution to protection against infectious pathogens. Klebsiella pneumoniae is an opportunistic pathogen widely known to cause nosocomial infections. Recently, hypervirulent strains of K. pneumoniae have been emerging, which can cause severe infections in immunocompetent individuals. Combined with the increase in antibiotic resistance, it is important to understand how K. pneumoniae affects components of the immune system. We studied the interactions of human platelets with several K. pneumoniae strains (the wild type encapsulated strain, and a nonencapsulated mutant). Thrombin-stimulated whole human and mouse blood significantly inhibited bacterial growth compared to unstimulated whole blood. Furthermore, we investigated the effect of K. pneumoniae on platelet activation. Both strains induced significant increase in activation of both unstimulated and thrombin-stimulated human platelets. Additionally, only the nonencapsulated mutant increased aggregation of platelets in response to ADP. K. pneumoniae killing assays were then performed with washed platelets in the presence or absence of thrombin. Surprisingly, washed platelets failed to exhibit any effects on the growth of K. pneumoniae. We further explored the impact of platelets on monocyte-mediated killing of K. pneumoniae. Importantly, we found that activated platelets significantly enhanced monocyte-mediated killing of K. pneumoniae. This effect was likely due to the formation of platelet-monocyte aggregates in blood upon thrombin stimulation. Overall, this study highlights the role of platelets in mediating a protective response against K. pneumoniae and reinforces the importance of platelets in modulating leukocyte behavior.
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Affiliation(s)
- Iluja Gautam
- Department of Medical Microbiology and Immunology, University of Toledo, Toledo, Ohio, USA
| | - Chadwick W. Huss
- Department of Medical Microbiology and Immunology, University of Toledo, Toledo, Ohio, USA
| | - Zachary A. Storad
- Department of Medical Microbiology and Immunology, University of Toledo, Toledo, Ohio, USA
| | - Michelle Krebs
- Department of Medical Microbiology and Immunology, University of Toledo, Toledo, Ohio, USA
| | - Omar Bassiouni
- Department of Medical Microbiology and Immunology, University of Toledo, Toledo, Ohio, USA
| | - Rochan Ramesh
- Department of Medical Microbiology and Immunology, University of Toledo, Toledo, Ohio, USA
| | - Leah M. Wuescher
- Department of Medical Microbiology and Immunology, University of Toledo, Toledo, Ohio, USA
| | - Randall G. Worth
- Department of Medical Microbiology and Immunology, University of Toledo, Toledo, Ohio, USA
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4
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Mariani E, Pulsatelli L, Cattini L, Dolzani P, Assirelli E, Cenacchi A, Di Martino A, Arciola CR, Filardo G. Pure Platelet and Leukocyte-Platelet-Rich Plasma for Regenerative Medicine in Orthopedics-Time- and Preparation-Dependent Release of Growth Factors and Effects on Synovial Fibroblasts: A Comparative Analysis. Int J Mol Sci 2023; 24:ijms24021512. [PMID: 36675025 PMCID: PMC9867505 DOI: 10.3390/ijms24021512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 01/14/2023] Open
Abstract
Intra-articular injections of autologous platelet concentrates are considered capable to enhance the healing of cartilage lesions, alleviate joint inflammation, and relieve other musculoskeletal pathological conditions. The aim of this study was to analyze the soluble fractions obtained from platelet-rich plasma (pure- and leukocyte-PRP) to compare time- and preparation-dependent modifications of growth factor concentrations and the supporting activity of the two preparations on synovial fibroblast growth and hyaluronic acid (HA) production in vitro. The release kinetics of FGF-2, SDF-1, VEGF, HGF, EGF, PD GF-AB/BB, IGF-1, VCAM-1, and TGF-β isoforms were followed up to 168 h after PRP activation, and their amounts were determined by multiplex-beads immunoassay. Synovial cell growth and supernatant HA production were respectively analyzed by Alamar Blue assay and ELISA. Time-dependent modifications grouped molecules in three peculiar patterns: one reaching the highest concentrations within 18 h and decreasing afterwards, another progressively increasing up to 168 h, and the last peaking at the central time points. Synovial fibroblast growth in response to L-PRP and P-PRP revealed differences over time and among added concentrations. Both preparations displayed a preserved supporting capacity of HA synthesis.
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Affiliation(s)
- Erminia Mariani
- Department of Medical and Surgical Sciences, Alma Mater Studiorum-Università di Bologna, 40138 Bologna, Italy
- Laboratory of Immunorheumatology and Tissue Regeneration, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Lia Pulsatelli
- Laboratory of Immunorheumatology and Tissue Regeneration, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
- Correspondence: ; Tel.: +39-0516366803 or +39-0516366808
| | - Luca Cattini
- Laboratory of Immunorheumatology and Tissue Regeneration, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Paolo Dolzani
- Laboratory of Immunorheumatology and Tissue Regeneration, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Elisa Assirelli
- Medicine and Rheumatology Unit, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Annarita Cenacchi
- Single Metropolitan Transfusion Service, AUSL Bo, 40136 Bologna, Italy
| | - Alessandro Di Martino
- Clinica Ortopedica e Traumatologica 2, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Carla Renata Arciola
- Department of Medical and Surgical Sciences, Alma Mater Studiorum-Università di Bologna, 40138 Bologna, Italy
- Laboratorio di Patologia delle Infezioni Associate all’Impianto, Laboratorio di Immunoreumatologia e Rigenerazione Tissutale, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Giuseppe Filardo
- Applied and Translational Research Center, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
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5
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Boffa A, Filardo G. Platelet-Rich Plasma for Intra-articular Injections: Preclinical and Clinical Evidence. Methods Mol Biol 2023; 2598:381-390. [PMID: 36355307 DOI: 10.1007/978-1-0716-2839-3_28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The use of platelet-rich plasma (PRP) has been supported by encouraging data from in vitro and preclinical in vivo studies, both in terms of safety and efficacy. This led to the wide use of PRP injections in the clinical practice, with promising results especially as a minimally invasive treatment for cartilage degeneration and osteoarthritis (OA). While many controversies remain on the best PRP formulation, the overall available clinical studies support the benefits of PRP, with functional improvement and reduction of pain-related symptoms up to 12 months, especially in young patients and early OA stages.
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Affiliation(s)
- Angelo Boffa
- Applied and Translational Research Center, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy.
| | - Giuseppe Filardo
- Applied and Translational Research Center, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
- Service of Orthopaedics and Traumatology, Department of Surgery, EOC, Lugano, Switzerland
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland
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6
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Song N, Yi Z, Ruan Q, Li C, Song M, Zhang B. Quality Analysis of Autologous Platelet-Rich Plasmapheresis. Indian J Hematol Blood Transfus 2022; 38:726-730. [PMID: 36258721 PMCID: PMC9569259 DOI: 10.1007/s12288-022-01529-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 02/17/2022] [Indexed: 11/30/2022] Open
Abstract
To summarized the technology of autologous platelet-rich plasmapheresis and analyzed the product quality, in order to provide safe and effective product guarantee service for clinical treatment. Technical parameters were set according to patient age, weight, height, and preoperative routine blood indices. Autologous platelet-rich plasma (PRP) was collected, and the product quality and adverse reactions of patients were statistically analyzed. Autologous PRP had platelet (PLT), white blood cell (WBC), and red blood cell (RBC) counts of (1250.26 ± 435.88) × 109/L, (1.19 ± 1.95) × 109/L, and (0.05 ± 0.04) × 1012/L, respectively. The PLT enrichment ratio in PRP was 5.66 ± 1.66. There was no significant difference in PLT, RBC, WBC, or hematocrit before and after apheresis (P > 0.05). The incidence of adverse reactions was 8%, and all were mild. When clinical patients use PRP in the treatment of diseases, autologous platelet-rich plasmapheresis technology was used to apheresis PRP, which has good product quality and few adverse reactions, and thus can be adopted more widely.
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Affiliation(s)
- Nali Song
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), No. 30 Gaotanyan Street, Chongqing, 400038 China
| | - Zhongmei Yi
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), No. 30 Gaotanyan Street, Chongqing, 400038 China
| | - Qianying Ruan
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), No. 30 Gaotanyan Street, Chongqing, 400038 China
| | - Chenchen Li
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), No. 30 Gaotanyan Street, Chongqing, 400038 China
| | - Min Song
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), No. 30 Gaotanyan Street, Chongqing, 400038 China
| | - Bin Zhang
- Department of Blood Transfusion, Southwest Hospital, Third Military Medical University (Army Medical University), No. 30 Gaotanyan Street, Chongqing, 400038 China
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7
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High-Throughput Proteomic Analysis of Human Dermal Fibroblast Response to Different Blood Derivatives: Autologous Topical Serum Derived from Plasma Rich in Growth Factors (PRGF) versus Leukocyte- and Platelet-Rich Plasma (L-PRP). Biomolecules 2022; 12:biom12071002. [PMID: 35883558 PMCID: PMC9313262 DOI: 10.3390/biom12071002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/06/2022] [Accepted: 07/15/2022] [Indexed: 02/01/2023] Open
Abstract
Platelet-rich plasma (PRP) is nowadays used in the treatment of different types of cutaneous lesions. However, different compositions can influence clinical outcomes. Among them, the inclusion of leukocytes is controversial. High-throughput proteomics techniques were used to analyze the proteins that are differentially expressed in human dermal fibroblasts (HDFs) after treatment for 24 h with two PRP types, autologous topical serum (Endoret serum—ES) derived from plasma rich in growth factors (PRGF) and leukocyte- and platelet-rich plasma (L-PRP). The identified proteins were then classified by both Gene Ontology and Ingenuity Pathway Analysis. The obtained results show that the compositions of ES and L-PRP differ in such a way that they induce different responses in HDFs. ES-treated HDFs overexpress growth factor-related proteins, leading to protein synthesis, cell proliferation and migration. By contrast, L-PRP treatment induces a response similar to that caused by proinflammatory molecules. These data could explain the contradictory clinical results obtained for the different types of PRP, especially with respect to their leukocyte contents.
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8
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Di Matteo B, Anzillotti G, Kon E. Navigating around the Current Options to Preserve and Regenerate Meniscus: A Long Journey Still to Be Pursued. Int J Mol Sci 2022; 23:ijms23116057. [PMID: 35682735 PMCID: PMC9181105 DOI: 10.3390/ijms23116057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 05/24/2022] [Indexed: 01/27/2023] Open
Affiliation(s)
- Berardo Di Matteo
- IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy; (B.D.M.); (E.K.)
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, 20090 Milan, Italy
| | - Giuseppe Anzillotti
- IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy; (B.D.M.); (E.K.)
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, 20090 Milan, Italy
- Correspondence:
| | - Elizaveta Kon
- IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy; (B.D.M.); (E.K.)
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, 20090 Milan, Italy
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9
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Kon E, Di Matteo B, Altomare D, Iacono F, Kurpyakov A, Lychagin A, Timashev P, Kalinsky E, Lipina M. Biologic agents to optimize outcomes following ACL repair and reconstruction: A systematic review of clinical evidence. J Orthop Res 2022; 40:10-28. [PMID: 33586785 DOI: 10.1002/jor.25011] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 02/03/2021] [Accepted: 02/10/2021] [Indexed: 02/04/2023]
Abstract
Treatment options for anterior cruciate ligament (ACL) injuries have greatly developed over the past decades. Although reconstruction surgery is a concrete reality, stimulation of ACL healing through biological techniques could represent a revolutionary conservative approach. The use of biologic products, such as platelet-rich plasma (PRP) or mesenchymal stem cells (MSCs), to treat partial ruptures or to enhance ligamentization after reconstruction, could thoroughly improve clinical outcomes. The aim of the present paper is to systematically review the available literature on this topic, to (i) describe the current state of the art in available biologic techniques; (ii) clarify the outcomes of their application; (iii) identify areas needing further investigation and possible future development. A systematic review of the literature on the use of biologically active agents (PRP and MSCs) to enhance outcomes of ACL surgery was performed: 31 studies were included. Based on the ACL injury pattern, 6 papers investigated biologic agents in ACL partial tears whereas 25 papers in ACL reconstruction. Sixteen of twenty-five studies dealing with ACL reconstruction were randomized controlled trials, whereas only case series are available for partial ACL tears. Current evidence is still lacking sound data to support the use of biological agents: no clinical superiority has been described when using PRP in ACL reconstruction. Concerning ACL healing in partial tears, the application of PRP has led to encouraging outcomes, but these findings should be confirmed by appropriately designed RCTs.
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Affiliation(s)
- Elizaveta Kon
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy.,Department of Traumatology, Orthopaedics and Disaster Surgery, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Berardo Di Matteo
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Daniele Altomare
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Francesco Iacono
- IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Anton Kurpyakov
- Department of Traumatology, Orthopaedics and Disaster Surgery, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Aleksey Lychagin
- Department of Traumatology, Orthopaedics and Disaster Surgery, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Peter Timashev
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.,Department of Polymers and Composites, N.N. Semenov Institute of Chemical Physics, Moscow, Russia.,Chemistry Department, Lomonosov Moscow State University, Moscow, Russia.,World-Class Research Center "Digital Biodesign and Personalized Healthcare," Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Eugene Kalinsky
- Department of Traumatology, Orthopaedics and Disaster Surgery, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Marina Lipina
- Department of Traumatology, Orthopaedics and Disaster Surgery, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
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10
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Avellar HK, Lutter JD, Ganta CK, Beard W, Smith JR, Jonnalagadda N, Peloquin S, Kang Q, Ayub K. In vitro antimicrobial activity of equine platelet lysate and mesenchymal stromal cells against common clinical pathogens. CANADIAN JOURNAL OF VETERINARY RESEARCH = REVUE CANADIENNE DE RECHERCHE VETERINAIRE 2022; 86:59-64. [PMID: 34975224 PMCID: PMC8697329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 05/21/2021] [Indexed: 06/14/2023]
Abstract
Septic arthritis is considered a medical emergency. Disease following bacterial colonization can lead to significant morbidity and mortality and requires costly treatment. Antimicrobial properties of regenerative therapies, including mesenchymal stromal cells and platelet products, have been researched extensively in human medicine. Although fewer studies have been conducted in veterinary species, they have shown promising results. The purpose of this study was to evaluate bacterial suppression by equine platelet lysate (EPL) and adipose-derived mesenchymal stromal cells (ASCs) in vitro. We hypothesized that both products would significantly inhibit the growth of Staphylococcus aureus and Escherichia coli. Pooled blood from 10 horses was used for production of EPL. Mesenchymal stromal cells were isolated from adipose tissue harvested from the gluteal region of 3 horses. The study evaluated 3 treatment groups: 10 × EPL, 1.6 million ASCs, and a control, using an incomplete unbalanced block design with repeated measurements. Optical density readings and colony-forming units/mL were calculated at 0, 3, 6, 9, 12, 18, and 24 hours. Decreased bacterial growth was seen at multiple time points for the S. aureus-ASC and S. aureus-EPL treatments, supporting our hypothesis. Increased bacterial growth was noticed in the E. coli-EPL group, with no difference in the E. coli-ASC treatment, which opposed our hypothesis. A clear conclusion of antimicrobial effects of EPL and ASCs cannot be made from this in vitro study. Although it appears that ASCs have a significant effect on decreasing the growth of S. aureus, further studies are needed to explore these effects, particularly in Gram-positive bacteria.
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Affiliation(s)
- Haileigh K Avellar
- Department of Clinical Sciences (Avellar, Lutter, Beard), Department of Diagnostic Medicine/Pathobiology (Ganta, Smith, Jonnalagadda, Peloquin), College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA; Department of Statistics, College of Arts and Sciences, Kansas State University, Manhattan, Kansas, USA (Kang, Ayub)
| | - John D Lutter
- Department of Clinical Sciences (Avellar, Lutter, Beard), Department of Diagnostic Medicine/Pathobiology (Ganta, Smith, Jonnalagadda, Peloquin), College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA; Department of Statistics, College of Arts and Sciences, Kansas State University, Manhattan, Kansas, USA (Kang, Ayub)
| | - Charan K Ganta
- Department of Clinical Sciences (Avellar, Lutter, Beard), Department of Diagnostic Medicine/Pathobiology (Ganta, Smith, Jonnalagadda, Peloquin), College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA; Department of Statistics, College of Arts and Sciences, Kansas State University, Manhattan, Kansas, USA (Kang, Ayub)
| | - Warren Beard
- Department of Clinical Sciences (Avellar, Lutter, Beard), Department of Diagnostic Medicine/Pathobiology (Ganta, Smith, Jonnalagadda, Peloquin), College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA; Department of Statistics, College of Arts and Sciences, Kansas State University, Manhattan, Kansas, USA (Kang, Ayub)
| | - Joseph R Smith
- Department of Clinical Sciences (Avellar, Lutter, Beard), Department of Diagnostic Medicine/Pathobiology (Ganta, Smith, Jonnalagadda, Peloquin), College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA; Department of Statistics, College of Arts and Sciences, Kansas State University, Manhattan, Kansas, USA (Kang, Ayub)
| | - Naveen Jonnalagadda
- Department of Clinical Sciences (Avellar, Lutter, Beard), Department of Diagnostic Medicine/Pathobiology (Ganta, Smith, Jonnalagadda, Peloquin), College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA; Department of Statistics, College of Arts and Sciences, Kansas State University, Manhattan, Kansas, USA (Kang, Ayub)
| | - Sarah Peloquin
- Department of Clinical Sciences (Avellar, Lutter, Beard), Department of Diagnostic Medicine/Pathobiology (Ganta, Smith, Jonnalagadda, Peloquin), College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA; Department of Statistics, College of Arts and Sciences, Kansas State University, Manhattan, Kansas, USA (Kang, Ayub)
| | - Qing Kang
- Department of Clinical Sciences (Avellar, Lutter, Beard), Department of Diagnostic Medicine/Pathobiology (Ganta, Smith, Jonnalagadda, Peloquin), College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA; Department of Statistics, College of Arts and Sciences, Kansas State University, Manhattan, Kansas, USA (Kang, Ayub)
| | - Kanwal Ayub
- Department of Clinical Sciences (Avellar, Lutter, Beard), Department of Diagnostic Medicine/Pathobiology (Ganta, Smith, Jonnalagadda, Peloquin), College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA; Department of Statistics, College of Arts and Sciences, Kansas State University, Manhattan, Kansas, USA (Kang, Ayub)
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11
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Duque-Madrid PC, Velasco-Bolaños J, Ceballos-Márquez A, López C, Carmona JU. Intramammary treatment using allogeneic pure platelet-rich plasma in cows with subclinical mastitis caused by Gram-positive bacteria. Sci Rep 2021; 11:23737. [PMID: 34887474 PMCID: PMC8660835 DOI: 10.1038/s41598-021-03067-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 11/15/2021] [Indexed: 11/09/2022] Open
Abstract
The aims of the study were (1) to compare the cure risk of intramammary treatment of pure platelet rich plasma (P-PRP) or cefquinome sulfate (CS) in cows with subclinical mastitis (SCM) caused by Gram-positive bacteria, evaluated via somatic cell count (SCC) and the microbiological analysis of milk; (2) to compare the inflammatory/anti-inflammatory response of mammary gland to both treatments through the analyses of interleukins (IL), interferon gamma (IFN-γ), and tumour necrosis factor alpha (TNF-α) in milk. A non-inferiority randomized clinical trial was conducted. The null hypothesis was that cure risk in the experimental group (P-PRP) was inferior to the reference group (CS). A total of 103 cows were selected according to SCC and presence of Gram-positive bacteria, 49 cows were treated with CS and 54 cows were treated with P-PRP after determination of its cellular and molecular quality control. Cure was assessed by milk analyses at day 21 and 22 after treatment. Cows that remained with SCM were retreated at day 26, and cure assessed at day 47 and 48. Overall, bacteriological cure was observed in 16 cows (30%) of the P-PRP group, and 35 cows (71%) in CS group. Staphylococcus aureus cure risk was higher in CS group, but inconclusive for Streptococcus spp. The mean SCC increased in relation to time only in the P-PRP group. A direct relation between time and treatment for IL-1, IL-2, and IL-6 was observed, while no differences were observed for IL-4. Furthermore, IL-1 and IL-2 increased in cows treated twice in both groups. IL-8, IFN-γ, and TNF-α showed a significant interaction between time and treatment. IFN-γ concentration was lower in the P-PRP group compared to the CS on days 0 and 22. Leukocyte counts were lower in P-PRP when compared to whole blood. TGF-β1 and PF4 concentrations were higher in platelet lysates in comparison to P-PRGS and plasma. Moreover, PDGF-BB concentration was significantly higher in platelet lysates in comparison to plasma. Results obtained in this study demonstrate that SCM treated with PRP showed a lower rate of bacteriologic cure when compared to animals treated with CS.
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Affiliation(s)
- Paulo C Duque-Madrid
- Grupo de Investigación en Calidad de Leche y Epidemiología Veterinaria (CLEV), Departamento de Producción Agropecuaria, Universidad de Caldas, Calle 65 No 26-10, Manizales, Colombia
| | - Juan Velasco-Bolaños
- Grupo de Investigación en Calidad de Leche y Epidemiología Veterinaria (CLEV), Departamento de Producción Agropecuaria, Universidad de Caldas, Calle 65 No 26-10, Manizales, Colombia.
| | - Alejandro Ceballos-Márquez
- Grupo de Investigación en Calidad de Leche y Epidemiología Veterinaria (CLEV), Departamento de Producción Agropecuaria, Universidad de Caldas, Calle 65 No 26-10, Manizales, Colombia.
| | - Catalina López
- Grupo de Investigación Terapia Regenerativa, Departamento de Salud Animal, Universidad de Caldas, Calle 65 No 26-10, Manizales, 170004, Colombia
| | - Jorge U Carmona
- Grupo de Investigación Terapia Regenerativa, Departamento de Salud Animal, Universidad de Caldas, Calle 65 No 26-10, Manizales, 170004, Colombia.
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12
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Filardo G, Previtali D, Napoli F, Candrian C, Zaffagnini S, Grassi A. PRP Injections for the Treatment of Knee Osteoarthritis: A Meta-Analysis of Randomized Controlled Trials. Cartilage 2021; 13:364S-375S. [PMID: 32551947 PMCID: PMC8808870 DOI: 10.1177/1947603520931170] [Citation(s) in RCA: 150] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE To evaluate effectiveness, in terms of patient-reported outcome measures, of platelet-rich plasma (PRP) injections for knee osteoarthritis compared to placebo and other intraarticular treatments. DESIGN PubMed, Cochrane Library, Scopus, Embase, Web of Science, as well as the gray literature were searched on January 17, 2020. Randomized controlled trials (RCTs) comparing PRP injections with placebo or other injectable treatments, in any language, on humans, were included. Risk of bias was assessed following the Cochrane guidelines; quality of evidence was graded using the GRADE guidelines. RESULTS Thirty-four RCTs, including 1403 knees in PRP groups and 1426 in control groups, were selected. WOMAC (Western Ontario and McMaster Universities Osteoarthritis Index) score favored PRP, with a statistically and clinically significant difference versus placebo at 12-month follow-up (P = 0.02) and versus HA (hyaluronic acid) at 6-month (P < 0.001) and 12-month (P < 0.001) follow-ups. A clinically significant difference favoring PRP versus steroids was documented for VAS (Visual Analogue Scale) pain (P < 0.001), KOOS (Knee Injury and Osteoarthritis Outcome Score) pain (P < 0.001), function in daily activities (P = 0.001), and quality of life (P < 0.001) at 6-month follow-up. However, superiority of PRP did not reach the minimal clinically important difference for all outcomes, and quality of evidence was low. CONCLUSIONS The effect of platelet concentrates goes beyond its mere placebo effect, and PRP injections provide better results than other injectable options. This benefit increases over time, being not significant at earlier follow-ups but becoming clinically significant after 6 to 12 months. However, although substantial, the improvement remains partial and supported by low level of evidence. This finding urges further research to confirm benefits and identify the best formulation and indications for PRP injections in knee OA.
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Affiliation(s)
- Giuseppe Filardo
- IRCCS Istituto Ortopedico Rizzoli,
Bologna, Italy,Ospedale Regionale di Lugano, Lugano,
Switzerland
| | - Davide Previtali
- Ospedale Regionale di Lugano, Lugano,
Switzerland,Davide Previtali, Orthopaedic and
Traumatology Unit, Ospedale Regionale di Lugano, EOC, Via Tesserete 46, Lugano
6900, Switzerland.
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13
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Attili AR, Iacoucci C, Serri E, Cuteri V, Cantalamessa A, Linardi M, Rifici C, Mazzullo G, Rossi G, Galosi L, Tambella AM. Antibacterial Properties of Canine Platelet-Rich Plasma and Other Non-Transfusional Hemo-Components: An in vitro Study. Front Vet Sci 2021; 8:746809. [PMID: 34671662 PMCID: PMC8520915 DOI: 10.3389/fvets.2021.746809] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 08/26/2021] [Indexed: 01/13/2023] Open
Abstract
This in vitro study was carried out to evaluate the potential antibacterial properties of canine non-transfusional hemo-components. Therapeutic formulations commonly used for regenerative medicine purposes (platelet-rich plasma, platelet gel, platelet lysate, fibrin glue), considering both leukocyte-rich and leukocyte-poor formulations, but also platelet-poor plasma and activating substances (thrombin, calcium gluconate), were tested to detect elements with potential antimicrobial properties. The antibacterial effect was tested on different bacterial strains (Staphylococcus aureus subspecies aureus, Staphylococcus cohnii subspecies cohnii, Escherichia coli, Pseudomonas aeruginosa, and Klebsiella pneumoniae subspecies pneumoniae) isolated from canine wounds and classified as susceptible, multidrug-, extensively, and pandrug-resistant bacteria toward a known panel of human and veterinary antibiotics. The evaluation was carried out by agar gel diffusion method (Kirby-Bauer) and micro-inhibition in broth using microplates and spectrophotometer reading. The study findings confirmed the hypothesized antibacterial properties of canine non-transfusional hemo-components. A more effective bacteriostatic effect was found against Gram-negative bacteria, drug-resistant too. The presence of leukocytes or platelets does not appear to be essential for the antibacterial effect. Further studies should be conducted to evaluate the exact mechanism of action of the antimicrobial activity. However, non-transfusional hemo-components could be a useful natural aid in controlling bacterial infections in dogs.
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Affiliation(s)
- Anna-Rita Attili
- Laboratory of Medical Microbiology and Infectious Diseases, School of Biosciences and Veterinary Medicine, University of Camerino, Matelica, Italy
| | - Cristina Iacoucci
- Laboratory of Medical Microbiology and Infectious Diseases, School of Biosciences and Veterinary Medicine, University of Camerino, Matelica, Italy
| | - Evelina Serri
- Veterinary Teaching Hospital, School of Biosciences and Veterinary Medicine, University of Camerino, Matelica, Italy
| | - Vincenzo Cuteri
- Laboratory of Medical Microbiology and Infectious Diseases, School of Biosciences and Veterinary Medicine, University of Camerino, Matelica, Italy
| | - Andrea Cantalamessa
- Laboratory of Medical Microbiology and Infectious Diseases, School of Biosciences and Veterinary Medicine, University of Camerino, Matelica, Italy
| | - Martina Linardi
- Laboratory of Medical Microbiology and Infectious Diseases, School of Biosciences and Veterinary Medicine, University of Camerino, Matelica, Italy
| | - Claudia Rifici
- Pathology Laboratory, Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - Giuseppe Mazzullo
- Pathology Laboratory, Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - Giacomo Rossi
- Pathology Laboratory, School of Biosciences and Veterinary Medicine, University of Camerino, Matelica, Italy
| | - Livio Galosi
- Pathology Laboratory, School of Biosciences and Veterinary Medicine, University of Camerino, Matelica, Italy
| | - Adolfo Maria Tambella
- Veterinary Teaching Hospital, School of Biosciences and Veterinary Medicine, University of Camerino, Matelica, Italy
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14
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Sethi D, Martin KE, Shrotriya S, Brown BL. Systematic literature review evaluating evidence and mechanisms of action for platelet-rich plasma as an antibacterial agent. J Cardiothorac Surg 2021; 16:277. [PMID: 34583720 PMCID: PMC8480088 DOI: 10.1186/s13019-021-01652-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 09/20/2021] [Indexed: 12/09/2022] Open
Abstract
Platelet rich plasma or PRP is a supraphysiologic concentrate of platelets derived by centrifugation and separation of whole blood components. Along with platelets and plasma, PRP contains various cell types including white blood cells (WBC)/leukocytes, both granulocytes (neutrophils, basophils, eosinophils) and agranulocytes (monocytes, lymphocytes). Researchers and clinicians have explored the application of PRP in wound healing and prevention of surgical wound infections, such as deep sternal wounds. We conducted this systematic literature review to evaluate the preclinical and clinical evidence for the antibacterial effect of PRP and its potential mechanism of action. 526 records were identified for screening. 34 unique articles were identified to be included in this literature review for data summary. Overall, the quality of the clinical trials in this review is low, and collectively qualify as Oxford level C. Based on the available clinical data, there is a clear trend towards safety of autologous PRP and potential efficacy in deep sternal wound management. The preclinical and bench data is very compelling. The application of PRP in treatment of wounds or prevention of infection with PRP is promising but there is a need for foundational bench and preclinical animal research to optimize PRP as an antibacterial agent, and to provide data to aid in the design and conduct of well-designed RCTs with adequate power to confirm antimicrobial efficacy of PRP in specific disease states and wound types.
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Affiliation(s)
- Dalip Sethi
- Terumo Blood and Cell Technologies, Inc., 10810 West Collins Avenue, Lakewood, CO, 80215, USA.
| | - Kimberly E Martin
- Boulder Clinical Science, 302 Urban Prairie St., Fort Collins, CO, 80524, USA
| | | | - Bethany L Brown
- American Red Cross, Biomedical Services, Holland Laboratory, Rockville, MD, 20855, USA
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15
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Pachito DV, Bagattini ÂM, de Almeida AM, Mendrone-Júnior A, Riera R. Technical Procedures for Preparation and Administration of Platelet-Rich Plasma and Related Products: A Scoping Review. Front Cell Dev Biol 2020; 8:598816. [PMID: 33363154 PMCID: PMC7759516 DOI: 10.3389/fcell.2020.598816] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/19/2020] [Indexed: 12/11/2022] Open
Abstract
Introduction Platelet-rich plasma is widely used for different types of clinical situations, but universal standardization of procedures for its preparation is still lacking. Methods Scoping review of comparative studies that have assessed at least two alternatives in one or more stages of preparation, storage and/or administration of PRP or its related products. A systematic search was conducted in MEDLINE, Embase, and LILACS. Two authors screened references independently. Data extraction was performed iteratively, and results were presented for each included comparison. Results Thirty-nine studies were included after assessing full texts, focusing on the comparison of PRP to a related product, types of anticoagulants, centrifugation protocols, commercial kits, processing time, methods for activation, and application concomitantly to other substances. Only laboratory outcomes were assessed, as platelet, leukocyte and growth factor concentrations. Conclusion Results showed great variability related to methods employed in different stages of PRP processing, which may explain the variability observed in clinical trials assessing the efficacy of PRP for different clinical situations.
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Affiliation(s)
- Daniela Vianna Pachito
- Núcleo de Avaliação de Tecnologias em Saúde, Hospital Sírio-Libanês, São Paulo, Brazil.,Fundação Getúlio Vargas, São Paulo, Brazil
| | - Ângela Maria Bagattini
- Núcleo de Avaliação de Tecnologias em Saúde, Hospital Sírio-Libanês, São Paulo, Brazil.,Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Brazil
| | - Adriano Marques de Almeida
- Instituto de Ortopedia e Traumatologia, Hospital das Clínicas, Universidade de São Paulo, São Paulo, Brazil
| | - Alfredo Mendrone-Júnior
- Fundação Pro Sangue Hemocentro de São Paulo e Laboratório de Processamento Celular, Hospital Sírio Libanês, São Paulo, Brazil
| | - Rachel Riera
- Núcleo de Avaliação de Tecnologias em Saúde, Hospital Sírio-Libanês, São Paulo, Brazil.,Disciplina de Medicina Baseada em Evidências, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
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16
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Kon E, Di Matteo B, Delgado D, Cole BJ, Dorotei A, Dragoo JL, Filardo G, Fortier LA, Giuffrida A, Jo CH, Magalon J, Malanga GA, Mishra A, Nakamura N, Rodeo SA, Sampson S, Sánchez M. Platelet-rich plasma for the treatment of knee osteoarthritis: an expert opinion and proposal for a novel classification and coding system. Expert Opin Biol Ther 2020; 20:1447-1460. [PMID: 32692595 DOI: 10.1080/14712598.2020.1798925] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Platelet-rich plasma (PRP) is able to modulate the joint environment by reducing the inflammatory distress and promoting tissue anabolism. Therefore, it has gained increasing popularity among clinicians in the treatment of osteoarthritis (OA), and it is currently proposed beside consolidated options such as viscosupplementation. AREAS COVERED A systematic review of all available meta-analyses evaluating intra-articular PRP injections in patients affected by knee OA was performed, to understand how this biologic treatment approach compares to the traditional injective therapies available in clinical practice. Moreover, a novel coding system and 'minimum reporting requirements' are proposed to improve future research in this field and promote a better understanding of the mechanisms of action and indications. EXPERT OPINION The main limitation in the current literature is the extreme variability of PRP products used, with often paucity or even lack of data on the biologic features of PRP, which should not be considered as a simple substance, but rather a 'procedure' requiring accurate reporting of the characteristics of the product but also all preparation and application modalities. This approach will aid in matching the optimal PRP product to specific patient factors, leading to improved outcomes and the elucidation of the cost-effectiveness of this treatment.
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Affiliation(s)
- Elizaveta Kon
- Department of Biomedical Sciences, Humanitas University , Milan, Italy.,Humanitas Clinical and Research Center, IRCCS , Rozzano, Milan, Italy
| | - Berardo Di Matteo
- Department of Biomedical Sciences, Humanitas University , Milan, Italy.,Humanitas Clinical and Research Center, IRCCS , Rozzano, Milan, Italy.,First Moscow State Medical University - Sechenov University , Moscow, Russia
| | - Diego Delgado
- Advanced Biological Therapy Unit, Hospital Vithas San José , Vitoria-Gasteiz, Spain
| | - Brian J Cole
- Department of Orthopaedics, Rush University Medical Center , Chicago, Illinois, USA
| | - Andrea Dorotei
- Department of Biomedical Sciences, Humanitas University , Milan, Italy.,Humanitas Clinical and Research Center, IRCCS , Rozzano, Milan, Italy
| | - Jason L Dragoo
- Department of Orthopedic Surgery, University of Colorado , Englewood, Colorado, USA
| | - Giuseppe Filardo
- Applied and Translational Research (ATR) Center, IRCCS Istituto Ortopedico Rizzoli , Bologna, Italy
| | - Lisa A Fortier
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University , Ithaca, NY, USA
| | - Alberto Giuffrida
- Department of Biomedical Sciences, Humanitas University , Milan, Italy.,Humanitas Clinical and Research Center, IRCCS , Rozzano, Milan, Italy
| | - Chris H Jo
- Department of Orthopedic Surgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine , Seoul, Republic of Korea
| | - Jeremy Magalon
- Aix Marseille Univ, INSERM, INRA, C2VN , Marseille, France.,Cell Therapy Laboratory, Hôpital De La Conception, AP-HM, IN, SERM CIC BT , Marseille, France
| | - Gerard A Malanga
- New Jersey Regenerative Institute LLC, Cedar Knolls, NJ; Department of Physical Medicine and Rehabilitation, Rutgers University, New Jersey Medical School , Newark, NJ, USA
| | - Allan Mishra
- Department of Orthopaedic Surgery, Menlo Medical Clinic, Stanford University Medical Center, Menlo Park , CA, USA
| | - Norimasa Nakamura
- Institute for Medical Science in Sports, Osaka Health Science University , Osaka, Japan
| | - Scott A Rodeo
- Orthopaedic Soft Tissue Research Program, Hospital for Special Surgery , New York, New York, USA
| | - Steven Sampson
- David Geffen School of Medicine at UCLA , Los Angeles, CA, USA
| | - Mikel Sánchez
- Advanced Biological Therapy Unit, Hospital Vithas San José , Vitoria-Gasteiz, Spain.,Arthroscopic Surgery Unit, Hospital Vithas San José , Vitoria-Gasteiz, Spain
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17
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Mariani E, Roffi A, Cattini L, Pulsatelli L, Assirelli E, Krishnakumar GS, Cenacchi A, Kon E, Filardo G. Release kinetic of pro- and anti-inflammatory biomolecules from platelet-rich plasma and functional study on osteoarthritis synovial fibroblasts. Cytotherapy 2020; 22:344-353. [PMID: 32327304 DOI: 10.1016/j.jcyt.2020.02.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 02/24/2020] [Accepted: 02/24/2020] [Indexed: 01/17/2023]
Abstract
BACKGROUND AIMS This study evaluated the release kinetics of numerous representative and less studied platelet-rich plasma (PRP) cytokines/chemokines with regard to the effects of various cellular compositions and incubation times. In addition, the biological effects of different PRPs on osteoarthritis synovial fibroblasts in vitro were tested. METHODS Peripheral whole blood was collected from healthy donors, and pure platelet-rich plasma (P-PRP), leukocyte-rich platelet-rich plasma (L-PRP) and platelet-poor plasma (PPP) were prepared for the analysis of the following biomolecules: IL-1β, IL-4, IL-6, IL-10, IL-17a, IL-22, MIP-1α/CCL-3, RANTES/CCL-5, MCP-3/CCL-7, Gro-α/CXCL-1, PF-4/CXCL-4, ENA-78/CXCL-5, NAP-2/CXCL-7, IL-8/CXCL-8, Fractalkine/CX3CL-1, s-CD40L P-PRP, L-PRP and PPP. Their effect on osteoarthritis synovial fibroblasts in vitro was tested by analyzing changes induced in both gene expression on a panel of representative molecules involved in physiopathology of joint environment and synthesis of IL-1β, IL-8 and hyaluronic acid. RESULTS This study demonstrated that among the 16 analyzed biomolecules, four were undetectable, whereas most of the detected biomolecules were more concentrated in L-PRP even when concentrations were normalized to platelet number. Despite the pro-inflammatory boost, the various PRP preparations did not alter synovial fibroblast gene expression of specific factors that play a pivotal role in joint tissue homeostasis and are able to induce anti-inflammatory (TIMP-1) biomolecules. DISCUSSION This study provides a set of reference data on the concentration and release kinetics of some less explored biomolecules that could represent potential specific effectors in the modulation of inflammatory processes and in tissue repair after treatment with PRP.
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Affiliation(s)
- Erminia Mariani
- Laboratorio di Immunoreumatologia e rigenerazione tissutale, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; Dipartimento di Scienze Mediche e Chirurgiche, Alma Mater Studiorum-Università di Bologna, Bologna, Italy.
| | - Alice Roffi
- Applied and Translational Research Center, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Luca Cattini
- Laboratorio di Immunoreumatologia e rigenerazione tissutale, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Lia Pulsatelli
- Laboratorio di Immunoreumatologia e rigenerazione tissutale, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Elisa Assirelli
- Laboratorio di Immunoreumatologia e rigenerazione tissutale, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Gopal Shankar Krishnakumar
- Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Erode, Tamil Nadu, India
| | - Annarita Cenacchi
- Servizio di Immunoematologia e Medicina trasfusionale, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Elizaveta Kon
- Humanitas University Department of Biomedical Sciences, Humanitas Clinical and Research Center, Milan, Italy
| | - Giuseppe Filardo
- Applied and Translational Research Center, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
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18
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Sakalys D, Rokicki JP, Januzis G, Kubilius R. Plasma rich in growth factors injection effectiveness for myofascial pain treatment in masticatory muscles. Randomised controlled trial. J Oral Rehabil 2020; 47:796-801. [PMID: 32271467 DOI: 10.1111/joor.12973] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/11/2020] [Accepted: 03/28/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Myofascial pain in masticatory muscles is one of the most common temporomandibular disorder. Nowadays, the most usable treatment methods are based on the muscle taut band cell membrane disruption, which releases the taut band. Platelet-rich plasma, made with PRGF Endoret® method, gives an opportunity to use platelet-derived growth factors in treatment processes. It has been proven that platelet-derived growth factors can relief pain and activate muscle regeneration. OBJECTIVE To test a hypothesis that PRGF injections can be effective for treating myofascial pain in masticatory muscles. METHODS Fifty adult patients participated in the study. Participants were randomly divided into two groups. The first group received 1-mL lidocaine injections to trigger point in their masseter muscle. The second group of patients received 1-mL PRGF injections. The patients' pain was measured by using visual analogue scale (VAS). RESULT Statistically significant difference in pain levels before the procedure and 4 weeks after it was found in both groups. There was no statistically significant difference between groups in pain levels before the procedure (P = .063) and 2 weeks after it (P = .123); however, statistically significant difference was noticed 4 weeks after the procedure (P < .001). Four weeks after the procedure, patients' average pain in lidocaine group was 3.4 on VAS, and it was 0.9 in PRGF group. CONCLUSIONS PRGF injections in masseter muscle affected by myofascial pain syndrome are an effective treatment method. PRGF injections more effectively relief myofascial pain in masseter muscle than lidocaine injections.
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Affiliation(s)
- Dovydas Sakalys
- Department of Maxillofacial Surgery, Faculty of Odontology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Jan Pavel Rokicki
- Department of Maxillofacial Surgery, Faculty of Odontology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Gintaras Januzis
- Department of Maxillofacial Surgery, Faculty of Odontology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Ricardas Kubilius
- Department of Maxillofacial Surgery, Faculty of Odontology, Lithuanian University of Health Sciences, Kaunas, Lithuania
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19
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Mudalal M, Sun X, Li X, Zhou Y. The evaluation of leukocyte-platelet rich fibrin as an anti-inflammatory autologous biological additive. A novel in vitro study. Saudi Med J 2020; 40:657-668. [PMID: 31287125 PMCID: PMC6757208 DOI: 10.15537/smj.2019.7.24302] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVES To investigate the use of leukocyte-platelet rich fibrin on suppressing the porphyromonas gingivalis (PG-LPS)-induced secretion of proinflammatory cytokines. Methods:This quantitative experimental study was conducted at the School and Hospital of Stomatology, Jilin University, Changchun, China, between September 2017 and January 2019. A modified technique was used to obtain human gingival fibroblast cells (HGFCs). 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and Cell Counting Kit-8 tests were established to determine the proliferation rate. Human gingival fibroblast cells were treated by PG-LPS at different periods and the isolated mRNA was subjected to reverse transcription polymerase chain reaction and real time quantitative polymerase chain reaction. The release of platelet-derived growth factor and transforming-growth factor-β1 at various time intervals was observed. Results: We successfully established a modified technique for the production of HGFCs culture. One µg/mL PG-LPS was the recommended concentration to inhibit fibroblast proliferation. The expression of the pro-inflammatory cytokines messenger ribnucleic acid was notably raised at 3 and 6 hours post-PG-LPS treatment. The cumulative release of growth factors peaked during the first 24 hours and the production continued for 10 days. However, the fibroblast expression of cytokines was significantly suppressed after treatment with leucocyte- and platelet-rich fibrin (L-PRF). Conclusion: This study provided a novel way of obtaining HGFCs and greater understanding of the clinical impacts through the assessment of the anti-inflammatory properties of L-PRF in vitro.
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Affiliation(s)
- Mahmoud Mudalal
- Department of Dental Implantology, School and Hospital of Stomatology, Jilin University, Changchun, China. E-mail.
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20
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Puidokas T, Kubilius M, Stumbras A, Juodzbalys G. Effect of leukocytes included in platelet concentrates on cell behaviour. Platelets 2019; 30:937-945. [DOI: 10.1080/09537104.2019.1646900] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Tomas Puidokas
- Department of Maxillofacial Surgery, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Mantas Kubilius
- Department of Maxillofacial Surgery, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Arturas Stumbras
- Department of Maxillofacial Surgery, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Gintaras Juodzbalys
- Department of Maxillofacial Surgery, Lithuanian University of Health Sciences, Kaunas, Lithuania
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21
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Zhang W, Guo Y, Kuss M, Shi W, Aldrich AL, Untrauer J, Kielian T, Duan B. Platelet-Rich Plasma for the Treatment of Tissue Infection: Preparation and Clinical Evaluation. TISSUE ENGINEERING PART B-REVIEWS 2019; 25:225-236. [PMID: 30712506 DOI: 10.1089/ten.teb.2018.0309] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
IMPACT STATEMENT The clinical application of platelet-rich plasma (PRP) has been widely studied for its effects on trauma or injury repair/regeneration, however the antibacterial property of PRP has been overlooked. Increasing evidence suggests PRP as a good antibacterial agent and that it could help prevent/treat tissue infection. This review emphasizes the importance of PRP's antibacterial property and summarizes the preclinical and clinical findings regarding the application of PRP in the prevention and treatment of wound and bone infection. The use of biocompatible PRP may be advantageous for tissue infection treatment due to its inherent antibacterial and healing promoting properties.
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Affiliation(s)
- Wenhai Zhang
- 1 Department of Orthopedics, Tianjin Hospital, Tianjin, People's Republic of China.,2 Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska
| | - Yue Guo
- 3 Tissue Engineering Labs of Orthopedics Institute, Tianjin Hospital, Tianjin, People's Republic of China
| | - Mitchell Kuss
- 2 Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska.,4 Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Wen Shi
- 2 Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska.,4 Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Amy L Aldrich
- 5 Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Jason Untrauer
- 6 Division of Oral and Maxillofacial Surgery, Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Tammy Kielian
- 5 Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Bin Duan
- 2 Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska.,4 Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska.,7 Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska.,8 Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska
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23
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Sun Y, Zhang R, Mao X, Zhang M. [Research of acellular xenogeneic nerve combined with adipose-derived stem cells and platelet rich plasma in repair of rabbit facial nerve injury]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2018; 32:736-744. [PMID: 29905054 DOI: 10.7507/1002-1892.201711079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Objective To investigate the early effects of acellular xenogeneic nerve combined with adipose-derived stem cells (ADSCs) and platelet rich plasma (PRP) in repairing facial nerve injury in rabbits. Methods The bilateral sciatic nerves of 15 3-month-old male Sprague-Dawley rats were harvested and decellularized as xenografts. The allogeneic ADSCs were extracted from the neck and back fat pad of healthy adult New Zealand rabbits with a method of digestion by collagenase type Ⅰ and the autologous PRP was prepared by two step centrifugation. The 3rd generation ADSCs with good growth were labelled with CM-Dil living cell stain, and the labelling and fluorescence attenuation of the cells were observed by fluorescence microscope. Another 32 New Zealand rabbits were randomly divided into 4 groups and established the left facial nerve defect in length of 1 cm ( n=8). The nerve defects of groups A, B, C, and D were repaired with CM-Dil-ADSCs composite xenogeneic nerve+autologous PRP, CM-Dil-ADSCs composite xenogeneic nerve, xenogeneic nerve, and autologous nerve, respectively. At 1 and 8 weeks after operation, the angle between the upper lip and the median line of the face (angle θ) was measured. At 4 and 8 weeks after operation, the nerve conduction velocity was recorded by electrophysiological examination. At 8 weeks after operation, the CM-Dil-ADSCs at the distal and proximal ends of regenerative nerve graft segment in groups A and B were observed by fluorescence microscopy; after toluidine blue staining, the number of myelinated nerve fibers in regenerated nerve was calculated; the structure of regenerated nerve fibers was observed by transmission electron microscope. Results ADSCs labelled by CM-Dil showed that the labelling rate of cells was more than 90% under fluorescence microscope, and the labelled cells proliferated well, and the fluorescence attenuated slightly after passage. All the animals survived after operation, the incision healed well and no infection occurred. At 1 week after operation, all the animals in each group had different degrees of dysfunction. The angle θ of the left side in groups A, B, C, and D were (53.4±2.5), (54.0±2.6), (53.7±2.4), and (53.0±2.1)°, respectively; showing significant differences when compared with the healthy sides ( P<0.05). At 8 weeks after operation, the angle θ of the left side in groups A, B, C, and D were (61.9±4.7), (56.8±4.2), (54.6±3.8), and (63.8±5.8)°, respectively; showing significant differences when compared with the healthy sides and with the values at 1 week ( P<0.05). Gross observation showed that the integrity and continuity of regenerated nerve in 4 groups were good, and no neuroma and obvious enlargement was found. At 4 and 8 weeks after operation, the electrophysiological examination results showed that the nerve conduction velocity was significantly faster in groups A and D than in groups B and C ( P<0.05), and in group B than in group C ( P<0.05); no significant difference was found between groups A and D ( P>0.05). At 8 weeks after operation, the fluorescence microscopy observation showed a large number of CM-Dil-ADSCs passing through the distal and proximal transplants in group A, and relatively few cells passing in group B. Toluidine blue staining showed that the density of myelinated nerve fibers in groups A and D were significantly higher than those in groups B and C ( P<0.05), and in group B than in group C ( P<0.05); no significant difference was found between groups A and D ( P>0.05). Transmission electron microscope observation showed that the myelinated nerve sheath in group D was large in diameter and thickness in wall. The morphology of myelin sheath in group A was irregular and smaller than that in group D, and there was no significant difference between groups B and C. Conclusion ADSCs can survive as a seed cell in vivo, and can be differentiated into Schwann-like cells under PRP induction. It can achieve better results when combined with acellular xenogeneic nerve to repair peripheral nerve injury in rabbits.
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Affiliation(s)
- Yanna Sun
- Department of Burn Plastic Surgery, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou Liaoning, 121000, P.R.China
| | - Rongming Zhang
- Department of Burn Plastic Surgery, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou Liaoning, 121000,
| | - Xu Mao
- Department of Burn Plastic Surgery, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou Liaoning, 121000, P.R.China
| | - Mengshu Zhang
- Department of Burn Plastic Surgery, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou Liaoning, 121000, P.R.China
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Giusti I, Di Francesco M, D'Ascenzo S, Palumbo P, Rughetti A, Dell'Orso L, Varasano PA, Pressanti GL, Dolo V. Leukocyte depletion does not affect the in vitro healing ability of platelet rich plasma. Exp Ther Med 2018; 15:4029-4038. [PMID: 29556269 DOI: 10.3892/etm.2018.5887] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 01/19/2018] [Indexed: 01/15/2023] Open
Abstract
The clinical use of platelet-rich plasma (PRP) containing or deprived of leukocytes remains a subject of debate and a controversial issue. It is not yet clear whether leukocyte content has a positive or negative effect on tissue healing processes. Several studies, conducted mainly in the orthopedic field, support the use of leukocyte-poor (LP) PRP, whereas other studies have not identified any significant differences between the use of LP and leukocyte-rich PRP. In the present study, the role of leukocytes contained in PRP was assessed to verify their in vitro effect on fibroblasts and endothelial cells, which have a leading role in the biological processes associated with wound healing (including angiogenesis and matrix remodeling). The original sample of PRP was divided into two aliquots, one of which remained unaltered, while the other was deprived of leukocytes. The two aliquots were used in in vitro tests in order to verify the effects of leukocytes on proliferation, wound healing and tube formation, and in molecular analyses of growth factor and enzyme content. The present results highlighted a substantial overlap between the two formulations. This may be explained by similar levels of growth factors (vascular endothelial growth factor, thrombospondin-1, interferon-γ, platelet-derived growth factor-BB, -AA and -B, tumor growth factor-β1, fibroblast growth factor 7 and tumor necrosis factor-α) and enzymes (gelatinases and plasminogen activators) in the two formulations. These results support the hypothesis that the ability of the PRP to affect the in vitro biological response of endothelial cells and fibroblasts does not rely on the presence of leukocytes.
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Affiliation(s)
- Ilaria Giusti
- Department of Life, Health and Environmental Sciences, University of L'Aquila, I-67100 L'Aquila, Italy
| | - Marianna Di Francesco
- Department of Life, Health and Environmental Sciences, University of L'Aquila, I-67100 L'Aquila, Italy
| | - Sandra D'Ascenzo
- Department of Life, Health and Environmental Sciences, University of L'Aquila, I-67100 L'Aquila, Italy
| | - Paola Palumbo
- Department of Life, Health and Environmental Sciences, University of L'Aquila, I-67100 L'Aquila, Italy
| | - Anna Rughetti
- Immunotransfusion Medicine Unit, 'San Salvatore' Hospital, I-67100 L'Aquila, Italy
| | - Luigi Dell'Orso
- Immunotransfusion Medicine Unit, 'San Salvatore' Hospital, I-67100 L'Aquila, Italy
| | | | | | - Vincenza Dolo
- Department of Life, Health and Environmental Sciences, University of L'Aquila, I-67100 L'Aquila, Italy
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Anitua E, Pino A, Orive G. Opening new horizons in regenerative dermatology using platelet-based autologous therapies. Int J Dermatol 2017; 56:247-251. [PMID: 28181224 DOI: 10.1111/ijd.13510] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 08/26/2016] [Accepted: 10/17/2016] [Indexed: 01/14/2023]
Abstract
Biological therapeutic therapies are gaining the attention of scientists and medical doctors. Accumulating evidence suggests that blood-derived autologous therapies are safe and effective treatments for skin repair and wound healing. The fibrin network formed after plasmatic activation and the autologous growth factors released when platelets degranulate constitute a real biological medicine that has been shown to promote cell recruitment, stimulate new blood vessel formation, reduce inflammation as well as protect from local infections. This perspective highlights recent basic and clinical results published on blood-derived autologous therapies in the field of regenerative dermatology and discusses potential challenges and future prospects.
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Affiliation(s)
- Eduardo Anitua
- Eduardo Anitua Foundation for Biomedical Research, Vitoria, Spain.,BTI - Biotechnology Institute, Vitoria, Spain
| | - Ander Pino
- BTI - Biotechnology Institute, Vitoria, Spain
| | - Gorka Orive
- Eduardo Anitua Foundation for Biomedical Research, Vitoria, Spain.,Laboratory of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of the Basque Country, Vitoria, Spain.,Networking Biomedical Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, SLFPB-EHU, Vitoria, Spain
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26
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D’asta F, Halstead F, Harrison P, Zecchi Orlandini S, Moiemen N, Lord J. The contribution of leucocytes to the antimicrobial activity of platelet-rich plasma preparations: A systematic review. Platelets 2017; 29:9-20. [DOI: 10.1080/09537104.2017.1317731] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Federica D’asta
- Birmingham Children’s Hospital, Burns Centre, Steelhouse Lane, Birmingham, UK
| | - Fenella Halstead
- NIHR Surgical Reconstruction and Microbiology Research, CentreQueen Elizabeth Hospital, Birmingham, UK
- Institute of Microbiology and Infection, University of Birmingham, Birmingham, UK
| | - Paul Harrison
- NIHR Surgical Reconstruction and Microbiology Research, CentreQueen Elizabeth Hospital, Birmingham, UK
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Sandra Zecchi Orlandini
- Department of Experimental and Clinical Medicine, Section of Anatomy and Histology, University of Florence, Florence, Italy
| | - Naiem Moiemen
- NIHR Surgical Reconstruction and Microbiology Research, CentreQueen Elizabeth Hospital, Birmingham, UK
- The Scar Free Foundation Centre for Burns Research, Queen Elizabeth Hospital, Birmingham, UK
| | - Janet Lord
- NIHR Surgical Reconstruction and Microbiology Research, CentreQueen Elizabeth Hospital, Birmingham, UK
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
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Tekin N, Cihan AC, Karaca B, Cokmus C. A Comparative Study: Taxonomic Grouping of Alkaline Protease Producing Bacilli. Pol J Microbiol 2017; 66:39-56. [PMID: 29359694 DOI: 10.5604/17331331.1234992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Alkaline proteases have biotechnological importance due to their activity and stability at alkaline pH. 56 bacteria, capable of growing under alkaline conditions were isolated and their alkaline protease activities were carried out at different parameters to determine their optimum alkaline protease production conditions. Seven isolates were showed higher alkaline protease production capacity than the reference strains. The highest alkaline protease producing isolates (103125 U/g), E114 and C265, were identified as Bacillus licheniformis with 99.4% and Bacillus mojavensis 99.8% based on 16S rRNA gene sequence similarities, respectively. Interestingly, the isolates identified as Bacillus safensis were also found to be high alkaline protease producing strains. Genotypic characterizations of the isolates were also determined by using a wide range of molecular techniques (ARDRA, ITS-PCR, (GTG)5-PCR, BOX-PCR). These different techniques allowed us to differentiate the alkaliphilic isolates and the results were in concurrence with phylogenetic analyses of the 16S rRNA genes. While ITS-PCR provided the highest correlation with 16S rRNA groups, (GTG)5-PCR showed the highest differentiation at species and intra-species level. In this study, each of the biotechnologically valuable alkaline protease producing isolates was grouped into their taxonomic positions with multi-genotypic analyses.
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Affiliation(s)
- Nilgun Tekin
- Biotechnology Institute, Ankara University, Besevler, Ankara, Turkey
| | - Arzu Coleri Cihan
- Faculty of Science, Biology Department, Ankara University, Tandogan, Ankara, Turkey
| | - Basar Karaca
- Faculty of Science, Biology Department, Ankara University, Tandogan, Ankara, Turkey
| | - Cumhur Cokmus
- Konya Food and Agriculture University, Dede Korkut Mahallesi, Beyşehir, Meram, Konya, Turkey
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Escamilla Cardeñosa M, Domínguez-Maldonado G, Córdoba-Fernández A. Efficacy and safety of the use of platelet-rich plasma to manage venous ulcers. J Tissue Viability 2016; 26:138-143. [PMID: 27955807 DOI: 10.1016/j.jtv.2016.11.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 07/05/2016] [Accepted: 11/24/2016] [Indexed: 11/15/2022]
Abstract
OBJECTIVES The aim of this study was to analyse the efficacy and safety of using platelet rich in growth factor (PRGF) as a local treatment for venous ulcers. METHODS In a clinical trial 102 venous ulcers (58 patients) were randomly assigned to the study group (application of PRGF) or the control group (standard cure with saline). For both groups the healed area was calculated before and after the follow up period (twenty-four weeks). The Kundin method was used to calculate the healed area (Area = Length × Width × 0.785). Pain was measured at the start and end of treatment as a secondary variable for each group by record obtained by means of self-evaluation visual analogue scale. RESULTS The average percentage healed area in the platelet rich plasma group was 67.7 ± 41.54 compared to 11.17 ± 24.4 in the control group (P = 0.001). Similarly, in the experimental group a significant reduction in pain occurred on the scale (P = 0.001). No adverse effects were observed in either of the two treatment groups. CONCLUSIONS The study results reveal that application of plasma rich in platelets is an effective and safe method to speed up healing and reduce pain in venous ulcers.
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Platelet-rich plasma for the treatment of bone defects: from pre-clinical rational to evidence in the clinical practice. A systematic review. INTERNATIONAL ORTHOPAEDICS 2016; 41:221-237. [PMID: 27888295 DOI: 10.1007/s00264-016-3342-9] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 11/07/2016] [Indexed: 12/23/2022]
Abstract
PURPOSE The treatment of large bone defects represents a significant challenge for orthopaedic surgeons. In recent years, biologic agents have also been used to further improve bone healing. Among these, platelet-rich plasma (PRP) is the most exploited strategy. The aim of the present study was to systematically review the available literature to identify: 1) preclinical in-vivo results supporting the rational of PRP use for bone healing; 2) evidence from the clinical practice on the actual clinical benefit of PRP for the treatment of fractures and complications such as delayed unions and non-unions. METHODS A systematic review of the literature was performed on the application of PRP in bone healing, using the following inclusion criteria: pre-clinical and clinical reports of any level of evidence, written in English language, published in the last 20 years (1996-2016), on the use of PRP to stimulate long-bone defect treatment, with focus on fracture and delayed/non-unions healing. RESULTS The search in the Pubmed database identified 64 articles eligible for inclusion: 45 were preclinical in-vivo studies and 19 were clinical studies. Despite the fact that the overall pre-clinical results seem to support the benefit of PRP in 91.1 % of the studies, a more in depth analysis underlined a lower success rate, with a positive outcome of 84.4 % in terms of histological analysis, and even lower values considering radiological and biomechanical results (75.0 % and 72.7 % positive outcome respectively). This was also mirrored in the clinical literature, where the real benefit of PRP use to treat fractures and non-unions is still under debate. CONCLUSION Overall, the available literature presents major limitations in terms of low quality and extreme heterogeneity, which hamper the possibility to optimize PRP treatment and translate it into a real clinical benefit despite positive preclinical findings on its biological potential to favour bone healing.
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Di Matteo B, Kon E, Filardo G. Intra-articular platelet-rich plasma for the treatment of osteoarthritis. ANNALS OF TRANSLATIONAL MEDICINE 2016; 4:63. [PMID: 26904585 DOI: 10.3978/j.issn.2305-5839.2016.01.18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Berardo Di Matteo
- 1 II Orthopaedic and Traumatologic Clinic-Biomechanics and Technology Innovation Laboratory, Rizzoli Orthopaedic Institute, Bologna, Italy ; 2 Nano-Biotechnology Laboratory, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - Elizaveta Kon
- 1 II Orthopaedic and Traumatologic Clinic-Biomechanics and Technology Innovation Laboratory, Rizzoli Orthopaedic Institute, Bologna, Italy ; 2 Nano-Biotechnology Laboratory, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - Giuseppe Filardo
- 1 II Orthopaedic and Traumatologic Clinic-Biomechanics and Technology Innovation Laboratory, Rizzoli Orthopaedic Institute, Bologna, Italy ; 2 Nano-Biotechnology Laboratory, Rizzoli Orthopaedic Institute, Bologna, Italy
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Fabbro MD, Bortolin M, Taschieri S, Ceci C, Weinstein RL. Antimicrobial properties of platelet-rich preparations. A systematic review of the current pre-clinical evidence. Platelets 2016; 27:276-85. [PMID: 26763769 DOI: 10.3109/09537104.2015.1116686] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In recent years autologous platelet concentrates (APCs) have become popular in several medicine fields, representing a valuable adjunct to regenerative surgical procedures. Beneficial effects in the control of postsurgical discomfort and infection have also been frequently reported, suggesting that APC may possess anti-inflammatory and antimicrobial properties. The aim of the present review was to summarize the current evidence regarding the antimicrobial effects of platelet concentrates, investigated by in vitro and animal studies. This review was conducted following a systematic approach. An electronic search was performed on MEDLINE, EMBASE and Scopus databases using appropriate search terms, without language or time restrictions. Preclinical studies assessing the antimicrobial activity of APC were included and divided according to the experimental design. Twenty in vitro studies and four animal studies, investigating APC effects on a broad range of microorganisms, were included. In in vitro studies APC reduced the growth of microorganisms during the first hours of incubation, while they could not completely break down the microbial load. In fact, over time a recovery of bacterial growth was always observed, suggesting that APCs display a bacteriostatic rather than a microbicidal activity. All animal studies showed that APC administered by local injections were able to reduce the infection caused by different microorganisms, although to a lesser extent compared to antibiotics. In conclusion, although the exact action mechanisms of interaction with microbial pathogens need further investigation, platelet concentrates proved to have antimicrobial properties, and therefore could represent a useful natural substance for controlling postoperative infections at surgical sites.
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Affiliation(s)
- Massimo Del Fabbro
- a Dipartimento di Scienze Biomediche, Chirurgiche e Odontoiatriche , Università degli Studi di Milano , Milano , Italy.,b Laboratory of Clinical Chemistry and Microbiology, IRCCS Istituto Ortopedico Galeazzi , Milano , Italy
| | - Monica Bortolin
- b Laboratory of Clinical Chemistry and Microbiology, IRCCS Istituto Ortopedico Galeazzi , Milano , Italy
| | - Silvio Taschieri
- a Dipartimento di Scienze Biomediche, Chirurgiche e Odontoiatriche , Università degli Studi di Milano , Milano , Italy.,b Laboratory of Clinical Chemistry and Microbiology, IRCCS Istituto Ortopedico Galeazzi , Milano , Italy
| | - Caterina Ceci
- a Dipartimento di Scienze Biomediche, Chirurgiche e Odontoiatriche , Università degli Studi di Milano , Milano , Italy.,b Laboratory of Clinical Chemistry and Microbiology, IRCCS Istituto Ortopedico Galeazzi , Milano , Italy
| | - Roberto L Weinstein
- a Dipartimento di Scienze Biomediche, Chirurgiche e Odontoiatriche , Università degli Studi di Milano , Milano , Italy.,b Laboratory of Clinical Chemistry and Microbiology, IRCCS Istituto Ortopedico Galeazzi , Milano , Italy
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