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https://www.readbyqxmd.com/read/29166700/dlp1-dependent-mitochondrial-fragmentation-and-redistribution-mediate-prion-associated-mitochondrial-dysfunction-and-neuronal-death
#1
Chaosi Li, Di Wang, Wei Wu, Wei Yang, Syed Zahid Ali Shah, Ying Zhao, Yuhan Duan, Lu Wang, Xiangmei Zhou, Deming Zhao, Lifeng Yang
Mitochondrial malfunction is a universal and critical step in the pathogenesis of many neurodegenerative diseases including prion diseases. Dynamin-like protein 1 (DLP1) is one of the key regulators of mitochondrial fission. In this study, we investigated the role of DLP1 in mitochondrial fragmentation and dysfunction in neurons using in vitro and in vivo prion disease models. Mitochondria became fragmented and redistributed from axons to soma, correlated with increased mitochondrial DLP1 expression in murine primary neurons (N2a cells) treated with the prion peptide PrP(106-126) in vitro as well as in prion strain-infected hamster brain in vivo...
November 22, 2017: Aging Cell
https://www.readbyqxmd.com/read/29164165/platelet-rich-plasma-for-primary-treatment-of-partial-ulnar-collateral-ligament-tears-mri-correlation-with-results
#2
J Banks Deal, Ed Smith, Wendell Heard, Michael J O'Brien, Felix H Savoie
Background: Jobe revolutionized the treatment of medial ulnar collateral ligament (MUCL) tears with his reconstruction technique. However, not all MUCL injuries require operative management; Rettig showed that 42% of MUCL injuries respond to conservative management. This was improved by Podesta, who showed that augmentation of nonoperative management with platelet-rich plasma (PRP) and magnetic resonance imaging (MRI) for detecting partial MUCL tears resulted in significantly higher success rates...
November 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29157270/autologous-platelet-rich-plasma-induces-bone-formation-of-tissue-engineered-bone-with-bone-marrow-mesenchymal-stem-cells-on-beta-tricalcium-phosphate-ceramics
#3
Tengbo Yu, Huazheng Pan, Yanling Hu, Hao Tao, Kai Wang, Chengdong Zhang
BACKGROUND: The purpose of the study is to investigate whether autologous platelet-rich plasma (PRP) can serve as bone-inducing factors to provide osteoinduction and improve bone regeneration for tissue-engineered bones fabricated with bone marrow mesenchymal stem cells (MSCs) and beta-tricalcium phosphate (β-TCP) ceramics. The current study will give more insight into the contradictory osteogenic capacity of PRP. METHODS: The concentration of platelets, platelet-derived growth factor-AB (PDGF-AB), and transforming growth factor-β1 (TGF-β1) were measured in PRP and whole blood...
November 21, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29156980/platelet-rich-plasma-and-hyaluronic-acid-are-not-synergistic-when-used-as-biological-adjuncts-with-autologous-osteochondral-transplantation
#4
Niall A Smyth, Keir A Ross, Amgad M Haleem, Charles P Hannon, Christopher D Murawski, Huong T Do, John G Kennedy
INTRODUCTION: Autologous osteochondral transplantation (AOT) is a treatment for osteochondral lesions with known concerns, including histological degradation of the graft and poor cartilage integration. Platelet-rich plasma (PRP) and hyaluronic acid (HA) have been described has having the potential to improve results. The aim of this study was to evaluate the effect of PRP and HA on AOT in a rabbit model. METHODS: Thirty-six rabbits underwent bilateral knee AOT treated with either the biological adjunct (PRP, n = 12; HA, n = 12; PRP + HA, n = 12) or saline (control)...
January 1, 2017: Cartilage
https://www.readbyqxmd.com/read/29148070/growth-factors-for-diabetic-foot-ulcers-mixed-treatment-comparison-analysis-of-randomized-clinical-trials
#5
Kannan Sridharan, Gowri Sivaramakrishnan
AIMS: Topical growth factors accelerate wound healing in patients with diabetic foot ulcers (DFU). Due to the absence of head to head comparisons, we carried out Bayesian network meta-analysis to compare the efficacy and safety of growth factors. METHODS: Using an appropriate search strategy, randomized controlled trials on topical growth factors compared with standard of care in patients with DFU, were included. Proportion of patients with complete healing was the primary outcome...
November 17, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29147489/the-effect-of-platelet-rich-plasma-on-human-mesenchymal-stem-cell-induced-bone-regeneration-of-canine-alveolar-defects-with-calcium-phosphate-based-scaffolds
#6
Reihaneh Shafieian, Maryam Moghaddam Matin, Amin Rahpeyma, Alireza Fazel, Hamideh Salari Sedigh, Ariane Sadr-Nabavi, Halimeh Hassanzadeh, Alireza Ebrahimzadeh-Bideskan
Objectives: Autologous bone transplantation known as the "gold standard" to reconstruction of osseous defects has known disadvantages. This study was designed to explore the effects of hydroxy-apatite/tricalcium-phosphate (HA/TCP) and platelet-rich plasma (PRP) on the osteogenesis ability of human adipose-derived mesenchymal stem cells (hAdMSCs) in vitro and in vivo. Materials and Methods: hAdMSCs were incubated with HA/TCP granules and/or PRP in vitro and then, cell proliferation and differentiation was assessed by MTT assay, AZR S staining and SEM examination...
October 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29142450/autologous-intrauterine-platelet-rich-plasma-instillation-for-suboptimal-endometrium-in-frozen-embryo-transfer-cycles-a-pilot-study
#7
Sunita R Tandulwadkar, Manasi V Naralkar, Akash D Surana, M Selvakarthick, Avinash H Kharat
Introduction: This pilot study was to evaluate the effectiveness of intrauterine infusion of autologous platelet-rich plasma (PRP) in infertile women undergoing frozen embryo transfer cycles with suboptimal endometrium. Material and Methods: Intrauterine instillation of autologous PRP was done in 68 women between 22 and 40 years, over 8 months, with suboptimal endometrial growth, and patients with repeated cycle cancellations, in addition to Estradiol valerate. Frozen embryo transfer was performed when the endometrium reached an optimal pattern in terms of thickness, appearance, and vascularity...
July 2017: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/29142106/soluble-a%C3%AE-aggregates-can-inhibit-prion-propagation
#8
Claire J Sarell, Emma Quarterman, Daniel C-M Yip, Cassandra Terry, Andrew J Nicoll, Jonathan D F Wadsworth, Mark A Farrow, Dominic M Walsh, John Collinge
Mammalian prions cause lethal neurodegenerative diseases such as Creutzfeldt-Jakob disease (CJD) and consist of multi-chain assemblies of misfolded cellular prion protein (PrP(C)). Ligands that bind to PrP(C) can inhibit prion propagation and neurotoxicity. Extensive prior work established that certain soluble assemblies of the Alzheimer's disease (AD)-associated amyloid β-protein (Aβ) can tightly bind to PrP(C), and that this interaction may be relevant to their toxicity in AD. Here, we investigated whether such soluble Aβ assemblies might, conversely, have an inhibitory effect on prion propagation...
November 2017: Open Biology
https://www.readbyqxmd.com/read/29141069/a-novel-multi-targeting-approach-to-treating-hair-loss-using-standardized-nutraceuticals
#9
Patricia K Farris, Nicole Rogers, Amy McMichael, Sophia Kogan
<p>Hair loss is a complicated problem that causes significant concern for those who are affected. Patients seeking medical treatment have limited options that include topical minoxidil and oral finasteride. While these treatments are backed by long term clinical use and research outcomes, many patients find topical minoxidil difficult to incorporate into their daily routine and some are concerned with the side effects associated with finasteride. In the office setting, patients may be treated with more invasive procedures such as platelet-rich plasma injections (PRP) and hair transplantation, treatments that often must be repeated and can lead to a costly investment...
November 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29133563/a-promising-anti-prion-trimethoxychalcone-binds-to-the-globular-domain-of-prp-c-and-changes-its-cellular-location
#10
N C Ferreira, L M Ascari, A G Hughson, G R Cavalheiro, C F Góes, P N Fernandes, J R Hollister, R A da Conceição, D S Silva, A M T Souza, M L C Barbosa, F A Lara, R A P Martins, B Caughey, Y Cordeiro
The search for anti-prion compounds has been encouraged by the fact that transmissible spongiform encephalopathies (TSEs) share molecular mechanisms with more prevalent neurodegenerative pathologies, such as Parkinson's and Alzheimer's diseases. Cellular prion protein conversion into protease-resistant forms (PrP(Res) or PrP(Sc)) is a critical step in the development of TSEs, thus being one of the main targets in the screening for anti-prion compounds. In this work, three trimethoxychalcones (J1, J8, J20) and one oxadiazole (Y17), previously identified in vitro as potential anti-prion compounds, were evaluated through different approaches in order to gain inferences about their mechanism of action...
November 13, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29128087/-platelet-rich-plasma-prp-and-disc-lesions-a-review-of-the-literature
#11
REVIEW
L Charneux, C Demoulin, M Vanderthomment, M Tomasella, M-A Ferrara, S Grosdent, S Bethlen, R Fontaine, P Gillet, T Racaru, J-F Kaux
The spine has been the subject of extensive clinical research since it is the source of many painful complaints. However, there is little scientific evidence concerning the therapeutic proposals. During the course of life, the intervertebral disc degenerates, which over time diminishes its damping capacity and facilitates the expulsion of the nucleus pulposus through the annulus fibrosus. The degeneration of the intervertebral disc (DDI) is the origin of some back pain and various specific treatments have been developed...
November 8, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29126293/commentary-on-effect-of-use-of-platelet-rich-plasma-prp-in-skin-with-intrinsic-aging-process
#12
Matthew D McLeod, William G Austen
No abstract text is available yet for this article.
November 4, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29125811/does-leukocyte-poor-or-leukocyte-rich-platelet-rich-plasma-applied-with-biopolymers-have-superiority-to-conventional-platelet-rich-plasma-applications-on-chondrocyte-proliferation
#13
Duygu Yaşar Şirin, İbrahim Yılmaz, Mehmet İsyar, Kadir Öznam, Mahir Mahiroğulları
OBJECTIVES: This study aims to investigate the possible effects of leukocyte concentration in the content of platelet-rich plasma (PRP) and the administration of PRP using a drug delivery system on chondrocyte proliferation in vitro conditions. PATIENTS AND METHODS: Blood from nine male patients (mean age 65 years; range 49 to 81 years) with advanced stage osteoarthritis who had not responded to medical or conservative treatments and underwent total knee arthroplasty was used to prepare two formulations: PRP with low concentration leukocytes (2000-4000 leukocytes/µL) was designated as pure PRP (P-PRP), whereas PRP with high concentration leukocytes (9000-11000 leukocytes/µL) as leukocyte-rich PRP (L-PRP)...
December 2017: Eklem Hastalıkları Ve Cerrahisi, Joint Diseases & related Surgery
https://www.readbyqxmd.com/read/29124674/the-cognitive-loci-of-the-display-and-task-relevant-set-size-effects-on-distractor-interference-evidence-from-a-dual-task-paradigm
#14
Bo Youn Park, Sujin Kim, Yang Seok Cho
The congruency effect of a task-irrelevant distractor has been found to be modulated by task-relevant set size and display set size. The present study used a psychological refractory period (PRP) paradigm to examine the cognitive loci of the display set size effect (dilution effect) and the task-relevant set size effect (perceptual load effect) on distractor interference. A tone discrimination task (Task 1), in which a response was made to the pitch of the target tone, was followed by a letter discrimination task (Task 2) in which different types of visual target display were used...
November 9, 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/29120855/the-application-of-l-prp-in-aids-patients-with-crural-chronic-ulcers-a-pilot-study
#15
Agata Cieslik-Bielecka, Rafał Skowroński, Magdalena Jędrusik-Pawłowska, Marcin Pierchała
Nonhealing wounds or skin ulcerations are the result of insufficient repair and destruction of a local healing potential. Opportunistic infections which cause a lot of ulcer complications influence the worsening general condition of patients with AIDS, ultimately leading to death. The chronicity of the condition and poor results of conventional therapy have prompted the search for new methods of treatment. We have examined venous or arteriovenous insufficiency-related extensive crural ulcers in AIDS patients...
November 6, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/29118521/a-proposal-of-an-effective-platelet-rich-plasma-protocol-for-the-treatment-of-androgenetic-alopecia
#16
Juan Ferrando, Sandra Cecilia García-García, Ana Cecilia González-de-Cossío, Lola Bou, Esperanza Navarra
Background: Platelet-rich plasma (PRP) has emerged as a promising treatment for androgenetic alopecia (AGA). In spite of the several studies previously reported, to date, a standardized protocol for PRP preparation and application, as well as a standard method for evaluating results has not been established. Aims: The aim of this study is to propose a standardized method for preparation and application of PRP for male AGA (MAGA) and female AGA (FAGA) and assess its safety and efficacy as a co-adjuvant therapy...
October 2017: International Journal of Trichology
https://www.readbyqxmd.com/read/29116399/intravitreal-bevacizumab-for-neovascular-glaucoma-in-uveal-melanoma-treated-by-proton-beam-therapy
#17
Amir Mahdjoubi, Marie Najean, Stéphanie Lemaitre, Sylvain Dureau, Rémi Dendale, Christine Levy, Livia Lumbroso-Le Rouic, Laurence Desjardins, Nathalie Cassoux
BACKGROUND: To evaluate the efficacy of bevacizumab on reduction of the enucleation rate and control of intraocular pressure (IOP) in neovascular glaucoma (NVG)-complicating proton beam therapy for UM and to identify the determinants of the efficacy of bevacizumab. METHODS: Retrospective comparative study of patients with rubeosis following proton therapy for uveal melanoma. Patients were divided into two groups: a bevacizumab group and a control group which comprised two subgroups: panretinal photocoagulation (PRP)/cryotherapy and observation subgroups...
November 7, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29114622/single-platelet-rich-plasma-injection-for-early-stage-of-osteoarthritis-of-the-knee
#18
Liborio Ingala Martini, Alessio Giai Via, Chiara Fossati, Filippo Randelli, Pietro Randelli, Davide Cucchi
Purpose  The purpose of this study was to determine the safety efficacy and outcomes of platelet-rich plasma (PRP) intra-articular injections for early stages of knee osteoarthritis (OA). Methods  Twenty-five patients affected by grade I and II knee primary OA according to the Kellgren-Lawrence scale received a single intra-articular PRP injection. Patients were prospectively evaluated for 6 months. Visual analog scale (VAS), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and Knee injury and Osteoarthritis Outcome Score (KOOS) scoring scales were used to evaluate clinical outcomes...
March 2017: Joints
https://www.readbyqxmd.com/read/29109319/histological-evaluation-of-the-effect-of-platelet-rich-plasma-on-pulp-regeneration-in-nonvital-open-apex-teeth-an-animal-study
#19
Jamileh Ghoddusi, Amir Maghsudlu, Hamid Jafarzadeh, Amirhossein Jafarian, Maryam Forghani
AIM: Platelet-rich plasma (PRP), which is a concentration of growth factors found in platelets, may be a suitable material for pulp regeneration. The aim of this animal study was a histological evaluation of PRP on pulp regeneration in nonvital teeth with immature apices. MATERIALS AND METHODS: A total of 40 premolar dogs' teeth were chosen for this study. After general anesthesia, the teeth were exposed, and subsequently, pulps were removed and the cavities were opened to the oral cavity...
November 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29108884/peritendinous-injection-of-platelet-rich-plasma-to-treat-tendinopathy-a-retrospective-review
#20
Mehmet Can Unlu, Aybars Kivrak, Mahmut Enes Kayaalp, Olgar Birsel, Isık Akgun
OBJECTIVE: The aim of this study was to determine factors associated with the likelihood of a better clinical outcome after the peritendinous injection of PRP for the treatment of chronic tendinopathy and identify whether PRP represents an effective treatment option for chronic tendinopathies. METHODS: The study included 214 patients (86 males and 128 females; mean age: 39.3 (18-75) years) who received PRP injections for tendinopathy refractory to conventional treatments...
November 3, 2017: Acta Orthopaedica et Traumatologica Turcica
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