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Platelet rich plasma(PRP)induces autophagy in osteoblast precursor 3T3-L1

BIOCELL 2018年第1期42卷 13-16页

作者： SERGIO ANDRES CARMINATI MARÍA CAROLINA BARBOSA CLAUDIO MARCELO FADER Universidad Nacional de Cuyo Facultad de OdontologíaMendozaArgentina Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET).Instituto de Histología y Embriología(IHEM) Facultad de Ciencias MédicasUniversidad Nacional de CuyoMendozaArgentina

Autophagy is an essential cellular homeostatic mechanism by which intracellular components are delivered into the lysosomes for degradation and *** has been related with a diversity of pathological or physiological dentary processes such as bone remodeling,skeletal aging,osteoclastogenesis,osteoblastogenesis and different types of oral ***-rich plasma(PRP),isolated from autologous blood,is a plasma preparation containing a higher concentration of platelets which contains numerous different growth factors and cytokines that activate several cellular signaling *** purpose of this study is to investigate the effect of PRP on autophagy stimulation in both osteoblast precursor 3T3-L1 and non-related osteoblastic *** results showed that PRP can increase the number of autophagic structures in 3T3-L1 and HeLa(cervical cancer cells)***,we have determined by Western blot a rise in the lipidated form of the autophagic protein LC3(***3-II)upon PRP *** together,our results suggest that PRP is able to induce a strongly autophagy response in osteoblast precursor and,to a lesser extent,in non-related osteoblastic cells,suggesting that PRP could be a potential therapeutic tool for some autophagy-related diseases associated with bone homeostasis.

关键词： Autophagy 3T3-L1 Platelet rich plasma odontology

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Left-Handed Students and Clinical Practice in Dentistry: Adaptations, Difficulties and Realities Experienced in the Academic Environment

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Open Journal of Preventive Medicine 2016年第11期6卷 247-259页

作者： Elisa Marianna Abreu Silva Itanielly Dantas Silveira Cruz Iris do Céu Clara Costa Kenio Costa de Lima Georgia Costa de Araújo Souza Maria Alice Pimentel Fuscella Fábia Barbosa de Andrade odontology Department Federal University of Rio Grande do Norte Natal Brazil State University of Rio Grande do Norte Caicó Brazil odontology Course Potiguar Faculty Natal Brazil Faculty of Health Sciences of Trairi Federal University of Rio Grande do Norte Santa Cruz Brazil

Objectives: To verify the existence of difficulties throughout the course of dentistry clinical practices, identify musculoskeletal pain, and evaluate frequency and intensity of pain/discomfort (if existent) in different regions of the body, experienced by left- handed students in comparison to right-handed students of the odontology courses of the state of Rio Grande do Norte (Northeast Brazil). Methods: A general questionnaire was applied to identify left-handed students in a population of 750 students, enrolled in clinical courses. An adaptation of the Grad-Corllet Diagram and a specific questionnaire on clinical practices were applied to the selected students. Descriptive statistics was utilized to analyze data of the specific questionnaire, and Mann-Whitney statistics, chi-square or Fisher’s Exact tests (with a 5% significance level) were utilized for the Grad-Corllet Diagram, searching for an association be- tween discomfort/pain in different body regions and manual laterality. Results: All students presented higher percentage of pain in the lumbar and neck/cervical re- gions. However, left-handed students presented higher values, with statistical signifi- cance levels of p = 0.041 for lower back, p = 0.002 for neck and p = 0.003 for cervical region. Conclusions: The majority of left-handed students classified “moderate” the difficulty of working with equipment designed for right-handers. There was high frequency of musculoskeletal pain/discomfort, with relevant statistical results for left- handed students regarding intensity. It is suggested that the participating institutions evaluate the adoption of inclusion politics, re-adapt the infrastructure to include equipment designed for left-handers, and finally provide adequate work conditions for all students.

关键词： Left-Hander odontology Undergraduate Academic Orientation Musculoskeletal Pain

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