30
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Efeito do concentrado de plasma em falhas ósseas provocadas em fêmures de camundongos como estimulação de formação óssea: estudo experimental Translated title: Effect of plasma concentrate on bone defects induced in mice fêmurs via stimulation of bone formation: an experimental study

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Os autores estudam experimentalmente o efeito do concentrado de plasma na estimulação óssea em camundongos. Foram utilizados dez camundongos isogênicos de linhagem gioto, onde após a coleta do sangue periférico de um camundongo, foi centrifugado este sangue e obtido um concentrado de plasma; foi utilizado o concentrado de plasma em falhas ósseas na região distal do fêmur, alternando-se os lados direito e esquerdo, sendo um lado com falha óssea isolada e o outro com falha óssea mais o concentrado de plasma e analisados quantitativamente e qualitativamente. Observou-se que o plasma não leva à estimulação da formação do calo ósseo, não ocorrendo aumento do processo inflamatório, e havendo apenas uma tendência a formar mais matriz óssea com o seu uso.

          Translated abstract

          In this trial the authors investigated the effect of plasma concentrate on bone callus formation in mice. Ten mice of the Gioto isogenic mouse strain were used; samples of peripheral blood of each mouse were collected and centrifuged, giving a plasma concentrate that was used to investigate bone defects at the distal region of the femur; the right and left sides were used alternately, and one side showed a single bone defect; the plasma concentrate was analyzed both qualitatively and quantitatively. It was noticed that the plasma concentrate did not lead to any stimulation of bone callus formation and no inflammatory effect increase has occurred; also, its use showed only a tendency to increase bone matrix formation.

          Related collections

          Most cited references12

          • Record: found
          • Abstract: not found
          • Article: not found

          The biology of fracture healing in long bones.

          B McKibbin (1978)
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Prevalence of dust mites in the homes of people with asthma living in eight different geographic areas of the United States.

            The density and species prevalence of dust mites were determined at various times over a 5-year-period in 252 homes of dust mite sensitive people with asthma who lived in eight geographic areas of the United States (Cincinnati, Ohio; New Orleans, La.; Memphis, Tenn.; Galveston, Texas; Greenville, N.C.; Delray Beach, Fla.; San Diego and Los Angeles, Calif.). The most common dust mites found in the homes were Dermatophagoides farinae (DF), D. pteronyssinus (DP), Euroglyphus maynei (EM), and Blomia tropicalis. All homes in all locations contained Dermatophagoides spp. mites, but few homes were populated exclusively by either DF or DP alone. Most homes (81.7%) were coinhabitated by both DF and DP. In coinhabited homes one species was predominant and usually made up at least 75% of the total mite population. Prevalence of the dominant or only species present varied between homes within a geographic area. EM occurred in significant numbers in 35.7% of homes in New Orleans, Memphis, Galveston, Delray Beach, and San Diego. Blomia tropicalis occurred in these same cities but in low densities. For all dust samples, only 13 homes of the 252 sampled had 100 or fewer mites/gm dust, which is considered to be the threshold for sensitivity. Most homes had average mite densities of 500 or more mites/gm dust. The results of the present study suggest a significant and widespread occurrence of both DF and DP. Therefore extracts of both mite species should be considered for diagnostic tests and immunotherapy. Significant levels of EM were present in some areas. Thus sensitivity to EM should be considered in these areas.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Contribution of collagen and mineral to the elastic-plastic properties of bone.

              Tension testing of wet bovine haversian cortical bone demonstrated marked plastic behavior. Progressive surface decalcification of this bone with dilute hydrochloric acid resulted in progressive decreases in the tension yield point and the ultimate stress with no change in the yield strain or ultimate strain unless decalcification was complete. The slope of the plastic region remained identical throughout decalcification. These findings are consistent with an elastic-perfectly plastic model for the mineral phase of bone tissue in which the mineral contributes the major portion of the tension yield strength. The slope or stiffness of the plastic region of the stress-strain curve is a function only of the properties of collagen, which itself plays a minor role in the tension yield strength of bone.
                Bookmark

                Author and article information

                Journal
                aob
                Acta Ortopédica Brasileira
                Acta ortop. bras.
                ATHA EDITORA (São Paulo, SP, Brazil )
                1413-7852
                1809-4406
                December 2003
                : 11
                : 4
                : 230-239
                Affiliations
                [01] orgnameFMUSP orgdiv1Departamento de Ortopedia e Traumatologia
                [02] orgnameSanta Casa de São Vicente - UNILUS orgdiv1Serviço de Residência Médica de Ortopedia e Traumatologia
                Article
                S1413-78522003000400006 S1413-7852(03)01100406
                10.1590/S1413-78522003000400006
                a29fe4e4-8cfe-4db2-80a3-5fd881464afa

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 27 July 2003
                : 22 May 2003
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 12, Pages: 10
                Product

                SciELO Brazil

                Categories
                Artigos Originais

                Camundongos de cepas endogâmicas,Bony callus, Bone matrix,Plasma,Inbred strains,Mice,Matriz óssea,Calo ósseo

                Comments

                Comment on this article