keyword
MENU ▼
Read by QxMD icon Read
search

A-prf

keyword
https://www.readbyqxmd.com/read/29074938/label-free-analysis-of-the-characteristics-of-a-single-cell-trapped-by-acoustic-tweezers
#1
Min Gon Kim, Jinhyoung Park, Hae Gyun Lim, Sangpil Yoon, Changyang Lee, Jin Ho Chang, K Kirk Shung
Single-cell analysis is essential to understand the physical and functional characteristics of cells. The basic knowledge of these characteristics is important to elucidate the unique features of various cells and causative factors of diseases and determine the most effective treatments for diseases. Recently, acoustic tweezers based on tightly focused ultrasound microbeam have attracted considerable attention owing to their capability to grab and separate a single cell from a heterogeneous cell sample and to measure its physical cell properties...
October 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28976904/application-of-platelet-rich-fibrin-and-injectable-platelet-rich-fibrin-in-combination-of-bone-substitute-material-for-alveolar-ridge-augmentation-a-case-report
#2
Ivan L Chenchev, Vasilena V Ivanova, Deyan Z Neychev, Radka B Cholakova
BACKGROUND: Different barrier membranes and augmentation techniques are used in oral surgery to recover lost bone structures with varied success. Recently, a combination between bone graft materials and Platelet-Rich-Fibrin (PRF) is implemented in the periodontology and implantology. AIM: The aim of this case report was to assess the possibility for augmentation of the alveolar ridge in the frontal region of the upper jaw, utilizing a combination of bone graft material, injectable platelet-rich-fibrin (i-PRF) and advanced platelet-rich fibrin (A-PRF)...
September 1, 2017: Folia Medica
https://www.readbyqxmd.com/read/28925527/one-gene-two-proteins-coordinated-production-of-a-copper-chaperone-by-differential-transcript-formation-and%C3%A2-translational-frameshifting-in-escherichia-coli
#3
Steffen L Drees, Birgit Klinkert, Stefan Helling, Dominik F Beyer, Katrin Marcus, Franz Narberhaus, Mathias Lübben
Programmed ribosomal frameshifting (PRF) is a translational anomaly causing the ribosome to shift into an alternative reading frame. PRFs are common in viral genomes, using a single nucleotide sequence to code for two proteins in overlapping frames. In bacteria and eukaryota, PRFs are less frequent. We report on a PRF in the copper detoxification system of Escherichia coli where a metallochaperone is generated out of the first 69 amino acids and a C-terminal out-of-frame glycine of the gene copA. copA besides codes for the P1B -ATPase CopA, a membrane-integral protein and principal interaction target of the chaperone...
September 19, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28902105/clinical-effectiveness-of-intra-articular-pulsed-radiofrequency-compared-to-intra-articular-corticosteroid-injection-for-management-of-atlanto-occipital-joint-pain-a-prospective-randomized-controlled-pilot-study
#4
So Min Shin, Sang Gyu Kwak, Dong Gyu Lee, Min Cheol Chang
STUDY DESIGN: A prospective randomized controlled pilot study OBJECTIVE.: We aimed to assess the effectiveness of pulsed radiofrequency (PRF) stimulation on the atlanto-occipital (AO) joint in patients with chronic joint pain. Additionally, we compared the effects of AO intra-articular (IA) PRF and AO IA corticosteroid. SUMMARY OF BACKGROUND DATA: IA injection of corticosteroids into the AO joint is widely used for the management of head and upper cervical pain, and its effectiveness has been shown in previous studies...
September 8, 2017: Spine
https://www.readbyqxmd.com/read/28890416/bayesian-population-receptive-field-modelling
#5
REVIEW
Peter Zeidman, Edward Harry Silson, Dietrich Samuel Schwarzkopf, Chris Ian Baker, Will Penny
We introduce a probabilistic (Bayesian) framework and associated software toolbox for mapping population receptive fields (pRFs) based on fMRI data. This generic approach is intended to work with stimuli of any dimension and is demonstrated and validated in the context of 2D retinotopic mapping. The framework enables the experimenter to specify generative (encoding) models of fMRI timeseries, in which experimental stimuli enter a pRF model of neural activity, which in turns drives a nonlinear model of neurovascular coupling and Blood Oxygenation Level Dependent (BOLD) response...
September 8, 2017: NeuroImage
https://www.readbyqxmd.com/read/28853913/comparison-of-the-effects-of-osteochondral-autograft-transplantation-with-platelet-rich-plasma-or-platelet-rich-fibrin-on-osteochondral-defects-in-a-rabbit-model
#6
Masahiro Maruyama, Hiroshi Satake, Tomoto Suzuki, Ryusuke Honma, Yasushi Naganuma, Yuya Takakubo, Michiaki Takagi
BACKGROUND: Although osteochondral autograft transplantation (OAT) provides satisfactory outcomes for osteochondral defects, for large defects OAT is often inadequate because of graft availability. Osteochondral allograft transplantation is an alternative treatment for large defects, but this approach is limited by graft storage constraints and carries disease transmission risks. Platelet-rich fibrin (PRF) is a second-generation platelet concentrate, and its positive effect on articular cartilage has been reported...
August 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28803702/patient-and-physician-reported-satisfaction-with-systemic-lupus-erythematosus-treatment-in-us-clinical-practice
#7
Katie Pascoe, Steve Lobosco, David Bell, Ben Hoskin, David J Chang, Bonnie Pobiner, Sulabha Ramachandran
PURPOSE: This two-part study comprised two descriptive, cross-sectional surveys to evaluate treatment satisfaction among patients with systemic lupus erythematosus (SLE) and their physicians from US clinical practices. The Lupus Plus Project (LPP; part one) involved belimumab-containing regimens; the Disease Specific Program (DSP; part two) included all treatments and was designed to build on the body of evidence from part one. METHODS: The LPP recruited patients receiving belimumab, and comprised 2 paper questionnaires: a patient self-completion questionnaire (PSC) and a patient record form (PRF) completed by the physician...
August 10, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28736982/understanding-the-influence-of-flow-velocity-wall-motion-filter-pulse-repetition-frequency-and-aliasing-on-power-doppler-image-quantification
#8
Maricy R Martins, Wellington P Martins, Carlos A M Soares, Andre H Miyague, Marek J Kudla, Theo Z Pavan
OBJECTIVES: Although power Doppler imaging has been used to quantify tissue and organ vascularity, many studies showed that limitations in defining adequate ultrasound machine settings and attenuation make such measurements complex to be achieved. However, most of these studies were conducted by using the output of proprietary software, such as Virtual Organ computer-aided analysis (GE Healthcare, Kretz, Zipf, Austria); therefore, many conclusions may not be generalizable because of unknown settings and parameters used by the software...
July 24, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28686663/in-vitro-release-pharmacokinetics-of-amikacin-teicoplanin-and-polyhexanide-in-a-platelet-rich-fibrin-layer-prf-a-laboratory-evaluation-of-a-modern-autologous-wound-treatment
#9
Daniela Knafl, Florian Thalhammer, Matthias G Vossen
OBJECTIVES: Platelet rich fibrin (PRF) is an autologous fibrin glue, produced from patients' blood, which, besides intraoperative use, has applications in the treatment of infected wounds. The combination with antimicrobial agents results in a prolonged antibacterial effect allowing for wound dressing change intervals of seven days even in infected wounds. The aim of this study was to evaluate release kinetics of amikacin, teicoplanin or polyhexanide from a PRF-layer. METHODS: PRF mixed with teicoplanin, amikacin or polyhexanide was sprayed on a silicon gauze patch and put on a colombia agar with bacteria with known minimal inhibitory concentration (MIC) and incubated for 24 hours and afterwards transferred to another agar with the same bacterial strain...
2017: PloS One
https://www.readbyqxmd.com/read/28684420/structural-and-biochemical-analyses-indicate-that-a-bacterial-persulfide-dioxygenase-rhodanese-fusion-protein-functions-in-sulfur-assimilation
#10
Nicole Motl, Meredith A Skiba, Omer Kabil, Janet L Smith, Ruma Banerjee
Hydrogen sulfide (H2S) is a signaling molecule that is toxic at elevated concentrations. In eukaryotes, it is cleared via a mitochondrial sulfide oxidation pathway, which comprises sulfide quinone oxidoreductase, persulfide dioxygenase (PDO), rhodanese, and sulfite oxidase and converts H2S to thiosulfate and sulfate. Natural fusions between the non-heme iron containing PDO and rhodanese, a thiol sulfurtransferase, exist in some bacteria. However, little is known about the role of the PDO-rhodanese fusion (PRF) proteins in sulfur metabolism...
August 25, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28635382/white-cell-and-platelet-content-affects-the-release-of-bioactive-factors-in-different-blood-derived-scaffolds
#11
S Cabaro, V D'Esposito, R Gasparro, F Borriello, F Granata, G Mosca, F Passaretti, J C Sammartino, F Beguinot, G Sammartino, P Formisano, F Riccitiello
Platelet-derived factors are biomaterials that might accelerate healing process in oral, maxillofacial, and several other applications. Release of specific factors by platelet concentrates is critical to achieving a successful outcome. Here, we have shown that platelet-rich fibrin (PRF) clots were beneficial sources of leukocytes, which may directly affect the release of chemokines and growth factors. When compared with the standard leukocyte-PRF (L-PRF), the experimental low-force modified procedure [defined as advanced-PRF (A-PRF)] entrapped the same content of viable leukocytes, released a similar amount of inflammatory cytokines, but secreted 3-, 1...
June 21, 2017: Platelets
https://www.readbyqxmd.com/read/28560233/evolution-current-status-and-advances-in-application-of-platelet-concentrate-in-periodontics-and-implantology
#12
REVIEW
Amit Arvind Agrawal
Platelet concentrates (PC) [platelet-rich plasma (PRP) and platelet-rich fibrin (PRF)] are frequently used for surgical procedures in medical and dental fields, particularly in oral and maxillofacial surgery, plastic surgery and sports medicine. The objective of all these technologies is to extract all the elements from a blood sample that could be used to improve healing and promote tissue regeneration. Although leukocyte rich and leukocyte poor PRP's have their own place in literature, the importance of non-platelet components in a platelet concentrate remains a mystery...
May 16, 2017: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/28466249/mechanical-and-degradation-properties-of-advanced-platelet-rich-fibrin-a-prf-concentrated-growth-factors-cgf-and-platelet-poor-plasma-derived-fibrin-pptf
#13
Kazushige Isobe, Taisuke Watanebe, Hideo Kawabata, Yutaka Kitamura, Toshimitsu Okudera, Hajime Okudera, Kohya Uematsu, Kazuhiro Okuda, Koh Nakata, Takaaki Tanaka, Tomoyuki Kawase
BACKGROUND: Fibrin clot membranes prepared from advanced platelet-rich fibrin (A-PRF) or concentrated growth factors (CGF), despite their relatively rapid biodegradability, have been used as bioactive barrier membranes for alveolar bone tissue regeneration. As the membranes degrade, it is thought that the growth factors are gradually released. However, the mechanical and degradable properties of these membranes have not well been characterized. The purpose of this study was to mechanically and chemically characterize these membranes...
December 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28458929/effect-of-bone-regeneration-with-mineralized-plasmatic-matrix-for-implant-placement-in-aesthetic-zone
#14
Khadija Amine, Amina Gharibi, Azeddine Hsaine, Jamila Kissa
Bone volume is one of the key factors to be considered when evaluating implant placement. When the bone volume is insufficient, implant placement could be conditioned by the necessity of preforming bone grafting procedures to compensate bone loss. Various grafting procedures can be used with different bone substitute. Mineralized Plasmatic Matrix (MPM) is one of these grafting materials, used to maintain or regenerate the socket's volume. In MPM, the autologous blood products highly concentrated in platelets and fibrin in a liquid state are combined with a bone substitute...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28437133/the-impact-of-the-centrifuge-characteristics-and-centrifugation-protocols-on-the-cells-growth-factors-and-fibrin-architecture-of-a-leukocyte-and-platelet-rich-fibrin-l-prf-clot-and-membrane
#15
David M Dohan Ehrenfest, Nelson R Pinto, Andrea Pereda, Paula Jiménez, Marco Del Corso, Byung-Soo Kang, Mauricio Nally, Nicole Lanata, Hom-Lay Wang, Marc Quirynen
L-PRF (leukocyte- and platelet-rich fibrin) is one of the four families of platelet concentrates for surgical use and is widely used in oral and maxillofacial regenerative therapies. The first objective of this article was to evaluate the mechanical vibrations appearing during centrifugation in four models of commercially available table-top centrifuges used to produce L-PRF and the impact of the centrifuge characteristics on the cell and fibrin architecture of a L-PRF clot and membrane. The second objective of this article was to evaluate how changing some parameters of the L-PRF protocol may influence its biological signature, independently from the characteristics of the centrifuge...
April 24, 2017: Platelets
https://www.readbyqxmd.com/read/28324162/reduction-of-relative-centrifugal-forces-increases-growth-factor-release-within-solid-platelet-rich-fibrin-prf-based-matrices-a-proof-of-concept-of-lscc-low-speed-centrifugation-concept
#16
K El Bagdadi, A Kubesch, X Yu, S Al-Maawi, A Orlowska, A Dias, P Booms, E Dohle, R Sader, C J Kirkpatrick, J Choukroun, S Ghanaati
Purpose The present study evaluated the platelet distribution pattern and growth factor release (VEGF, TGF-β1 and EGF) within three PRF (platelet-rich-fibrin) matrices (PRF, A-PRF and A-PRF+) that were prepared using different relative centrifugation forces (RCF) and centrifugation times. Materials and methods immunohistochemistry was conducted to assess the platelet distribution pattern within three PRF matrices. The growth factor release was measured over 10 days using ELISA. Results The VEGF protein content showed the highest release on day 7; A-PRF+ showed a significantly higher rate than A-PRF and PRF...
March 21, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28196169/the-use-of-platelet-rich-fibrin-versus-subepithelial-connective-tissue-graft-in-treatment-of-multiple-gingival-recessions-a-randomized-clinical-trial
#17
Elif Öncü
The objective of this study was to evaluate the clinical effectiveness of platelet-rich fibrin (PRF) membrane used in combination with a modified coronally advanced flap (MCAF) and to compare it with the use of a subepithelial connective tissue graft (SCTG) in combination with a MCAF in treatment of Miller Class I and II bilateral multiple gingival recessions. A total of 20 patients with multiple Miller Class I and II maxillary gingival recession defects participated in this randomized, split-mouth, controlled study...
March 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28131412/second-generation-platelet-concentrate-platelet-rich-fibrin-as-a-scaffold-in-regenerative-endodontics-a-case-series
#18
Hengameh Bakhtiar, Shahram Esmaeili, Setareh Fakhr Tabatabayi, Mohammad Reza Ellini, Mohammad Hossein Nekoofar, Paul M H Dummer
INTRODUCTION: The purpose of this case series was to report the clinical and radiographic results of a pulp regenerative procedure using platelet-rich fibrin (PRF), a second-generation platelet concentrate, in immature teeth with necrotic pulps. METHODS: Root canal revascularization using PRF was performed on 4 immature teeth with necrotic pulps. After access cavity preparation, the root canals were irrigated with low concentration sodium hypochlorite solution (1...
March 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/27837344/platelet-rich-fibrin-may-reduce-the-risk-of-delayed-recovery-in-tooth-extracted-patients-undergoing-oral-bisphosphonate-therapy-a-trial-study
#19
Takuya Asaka, Noritaka Ohga, Yutaka Yamazaki, Jun Sato, Chiharu Satoh, Yoshimasa Kitagawa
OBJECTIVES: The aim of the present study was to evaluate the effectiveness of platelet-rich fibrin (PRF) as a wound-healing accelerator in patients undergoing oral bisphosphonate therapy and requiring tooth extractions. MATERIALS AND METHODS: A total of 102 patients were divided into a PRF group and control group. The patients received oral bisphosphonate therapy for osteoporosis for an average of 32 months. Blood was collected and PRF was introduced into the socket of the PRF group only...
November 11, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27788772/a-new-method-to-develop-human-dental-pulp-cells-and-platelet-rich-fibrin-complex
#20
Xuan He, Wen-Xia Chen, Guifei Ban, Wei Wei, Jun Zhou, Wen-Jin Chen, Xian-Yu Li
INTRODUCTION: Platelet-rich fibrin (PRF) has been used as a scaffold material in various tissue regeneration studies. In the previous methods to combine seed cells with PRF, the structure of PRF was damaged, and the manipulation time in vitro was also increased. The objective of this in vitro study was to explore an appropriate method to develop a PRF-human dental pulp cell (hDPC) complex to maintain PRF structure integrity and to find out the most efficient part of PRF. METHODS: The PRF-hDPC complex was developed at 3 different time points during PRF preparation: (1) the before centrifugation (BC) group, the hDPC suspension was added to the venous blood before blood centrifugation; (2) the immediately after centrifugation (IAC) group, the hDPC suspension was added immediately after blood centrifugation; (3) the after centrifugation (AC) group, the hDPC suspension was added 10 minutes after blood centrifugation; and (4) the control group, PRF without hDPC suspension...
November 2016: Journal of Endodontics
keyword
keyword
98177
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"