Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 4 de 4
Filter
1.
Rev. habanera cienc. méd ; 16(2): 248-255, mar.-abr. 2017. ilus
Article in Spanish | LILACS, CUMED | ID: biblio-845279

ABSTRACT

Introducción: Las pérdidas de sustancia de los pulpejos constituyen uno de los motivos de consulta más frecuentes en las salas de urgencias de traumatología. El pulpejo es el área del dedo con mayor densidad de terminaciones sensoriales, que constituyen el primer eslabón de conexión entre nuestro sistema nervioso central y el medio externo en cuanto a la sensación táctil se refiere. Objetivo: Evidenciar las ventajas del uso del colgajo fasciocutáneo pectoral presentando un caso con lesión del pulpejo del pulgar. Presentación del caso: Un paciente con pérdida traumática del pulpejo del pulgar, a quien se le realiza un colgajo fasciocutáneo pectoral, revisando las particularidades morfofisiológicas del sitio operatorio y el proceder. Conclusiones: Los conocimientos de Morfofisiología Humana tienen importancia y aplicación en diferentes procederes médico-quirúrgicos(AU)


Introduction: Soft flesh losses is one of the most frequent consult's reasons in traumatology's emergency wards. Soft flesh is the at;the finger with higher density of sensorial endings, which constitute the first link between our central nervous system and the external environment in terms of tactile sensation. Objective: to remark the advantage of the use of Pectoral fasciocutaneous flap through a Case Presentation. Case presentation: patient suffering a soft flesh traumatic loss of the tactile pad of the thumb, reviewing the morphophysiological specificities of surgery area and procedure. Conclusions: it is concluded that Human Morphophysiological knowledge are important in several medical-surgical procedures(AU)


Subject(s)
Humans , Adult , Surgical Flaps/transplantation , Subcutaneous Tissue/transplantation , Thumb/injuries
2.
An. bras. dermatol ; 92(5,supl.1): 151-153, 2017. graf
Article in English | LILACS | ID: biblio-887067

ABSTRACT

Abstract The reconstruction of facial surgical defects is usually challenging for the dermatologic surgeon. Three different cases of facial defects in which tunneled island flaps were used are reported. In 2 cases, wide defects involving the nasal dorsum and ala were repaired using a nasolabial island flap tunneled through the lateral side of the nose. A tunneled island glabellar flap was used for medial canthus reconstruction in the third case. Despite complex pedicle dissection and frequent trapdoor deformation, tunneled island flaps allow reconstruction of wide defects in a single-staged procedure, camouflaging the scar of the donor area in boundaries of cosmetic units and preserving the facial central symmetry.


Subject(s)
Humans , Male , Female , Surgical Flaps/surgery , Facial Neoplasms/surgery , Carcinoma, Squamous Cell/surgery , Nose Neoplasms/surgery , Skin Transplantation/methods , Carcinoma, Basal Cell/surgery , Treatment Outcome , Subcutaneous Tissue/transplantation
3.
Bauru; s.n; 2012. 138 p. ilus, tab, graf.
Thesis in Portuguese | LILACS, BBO | ID: lil-673687

ABSTRACT

Os avanços relacionados à ciência dos biomateriais e engenharia tecidual buscam esclarecer os mecanismos envolvidos na resposta biológica associada ao uso desses dispositivos e sua interação com o sistema imune. Neste estudo, avaliou-se a resposta imune e inflamatória desenvolvida em camundongos frente à implantação de membrana de cortical óssea bovina no tecido subcutâneo, em implantação única e sequencial de duas membranas, assim como os possíveis mecanismos envolvidos no processo de reconhecimento e reabsorção desse biomaterial, de acordo com análise histomorfométrica, enzimática e molecular. Após a implantação da membrana, sinais de reabsorção que antes eram notados em pontos isolados, aos poucos se unem até sua completa degradação, observada somente após 15 dias. Todo o processo de reabsorção da membrana é acompanhado por uma reação inflamatória de magnitude moderada, seguida pelo declínio do número de leucócitos, surgimento de células gigantes multinucleadas e formação de uma cápsula de tecido conjuntivo fibroso. A cinética de TNF-α e MMP-2, MMP-8, MMP-9 e MMP-13 apresentou um padrão de produção decrescente, entretanto os níveis dos inibidores de metaloproteinases (TIMPs) e TGF-β parecem atuar de forma inversa. A velocidade de reabsorção após duas implantações consecutivas da membrana foi maior quando comparada ao grupo de animais que sofreu apenas uma implantação, porém os resultados do teste de hipersensibilidade do tipo tardia (DTH) demonstraram que a membrana é biocompatível, pois não elicitou resposta imunológica exacerbada após uma segunda implantação, confirmando então a natureza não imunogênica desse biomaterial. Finalmente, os animais CD14KO e MyD88KO apresentaram uma reabsorção mais lenta da membrana implantada, quando comparados aos animais C57Bl/6 (WT)...


Advances related to the biomaterials science and tissue engineering seek to clarify the mechanisms involved in the biological response associated with the use of those devices and their interaction with the immune system. This study evaluated the inflammatory and immune response developed in mice after implantation bovine bone cortical membrane in subcutaneous tissue, in both, unique and sequential implantation of 2 membranes, as the mechanisms involved in this biomaterial recognition and resorption process, on regards to histomorphometric, enzymatic and molecular analysis. After membrane implantation, previously observed signs of resorption in isolated spots, gradually unite until their complete degradation after 15 days. The whole membrane resorption process is accompanied by a moderate inflammatory reaction, followed by a decline in the leukocytes number, appearance of multinucleated giant cells and formation of a capsule of fibrous connective tissue. The kinetics of TNF-α, MMP-2, MMP-8, MMP-9 e MMP-13 showed a pattern of decreasing production, however, levels of metalloproteinases inhibitors (TIMPs) and TGF-β seem to act in reverse way. The resorption rate after two successive membrane implantations was higher when compared to the group which suffered only one implantation, however, the results of delayed test hypersensity (DTH) demonstrated that the membrane is biocompatible, that is, it does not elicited too high immune response after a second position, confirming the non immunogenic nature of this biomaterial. Eventually, CD14KO and MyD88KO strains showed a slower membrane resorption when compared to animals C57Bl/6, demonstrating that the CD14 and MyD88 molecules are involved in biomaterial recognition and play an important role in bovine cortical bone membrane resorption process, indicating that PAMPs and/or DAMPs are involved in biological response generated by this biomaterial.


Subject(s)
Animals , Male , Cattle , Mice , Biocompatible Materials , Inflammation/immunology , Subcutaneous Tissue/transplantation , Bone Transplantation/immunology , Cytokines/analysis , Cytokines/immunology , Guided Tissue Regeneration , Matrix Metalloproteinases, Membrane-Associated/analysis , Matrix Metalloproteinases, Membrane-Associated/immunology , Time Factors
4.
Bauru; s.n; 2008. 229 p. ilus, tab, graf.
Thesis in Portuguese | LILACS, BBO | ID: lil-557720

ABSTRACT

A reação do tecido subcutâneo de rato foi avaliada frente à implantação de microgrânulos de osso bovino desproteinizado, de cerâmica de HA-I3TCP densa e de dolomita em pó. Foram utilizados 54 ratos, divididos em 03 grupos, os quais receberam os implantes acondicionados em cápsulas de colágeno pelos períodos de 30, 60 e 90 dias. Os espécimes foram analisados pela microscopia óptica de modo descritivo e quantitativo, o qual teve como padrão 04 critérios: infiltrado inflamatório, tecido fibrocelular, reabsorção do material implantado e necrose, cujos valores foram submetidos aos testes de Kruskal-Wallis e de Dun. Os resultados obtidos revelaram que a cerâmica bifásica (HA-I3TCP) provocou reações teciduais definidas como biocompatíveis, semelhantes àquelas oriundas do osso bovino desproteinizado, enquanto que a dolomita induziu à necrose, caracterizando uma agressão tóxica.


The reaction of the subcutaneous tissue of rats was evaluated after placement of microgranules of deproteinized bovine bone, dense HA-J3TCP ceramic and dolomite powder. The study was conducted on 54 rats divided in 3 groups, which received the implants stored in collagen capsules for periods of 30, 60 and 90 days. The specimens were submitted to descriptive and quantitative analysis by light microscopy, based on four criteria: inflammatory infiltrate, fibrocellular tissue, resorption of implanted material and necrosis. The results were analyzed by the Kruskal-Wallis and Dunn's tests. The results revealed that the biphasic ceramic (HAJ3TCP) promoted tissue reactions considered as biocompatible, similar to those promoted by the deproteinized bovine bone. Conversely, the dolomite caused necrosis, characterizing a toxic aggression.


Subject(s)
Animals , Male , Cattle , Rats , Durapatite/chemistry , Calcium Phosphates/chemistry , Biocompatible Materials/therapeutic use , Bone Substitutes/chemistry , Subcutaneous Tissue/transplantation , Bone Regeneration , Collagen , Granulation Tissue , Statistics, Nonparametric , Transplantation, Heterologous , Subcutaneous Tissue/chemistry
SELECTION OF CITATIONS
SEARCH DETAIL