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https://dx.doi.org/10.34626/b8...
Master thesis . 2023
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Engenharia de Tecidos: Estratégias de Vasculogénese Sem Fatores de Crescimento Utilizando a Fração Vascular Estromal de Tecido Adiposo Humano

Authors: André Baptista Pestana Martins Silva;

Engenharia de Tecidos: Estratégias de Vasculogénese Sem Fatores de Crescimento Utilizando a Fração Vascular Estromal de Tecido Adiposo Humano

Abstract

Introdução: A Engenharia de Tecidos tem sido palco de inúmeros avanços e constantes inovações; contudo, a aplicabilidade clínica com vista à regeneração ou substituição de tecidos e órgãos tem sido limitada pela dificuldade em conseguir, in vivo, uma vascularização eficiente das estruturas que assegure a sua viabilidade após a implantação. Têm-se multiplicado as estratégias de vascularização, focadas na otimização das estruturas de suporte, na adição de fatores de crescimento direcionados e na utilização de fontes celulares específicas. Objetivos: Avaliar as orientações e estratégias atuais que utilizam a fração vascular do estroma do tecido adiposo como estratégia de promoção da vascularização das estruturas assegurando a sua integração no hospedeiro. Metodologia: Com base em trabalhos de investigação desenvolvida entre o 3B's Research Group-UM e o Serviço de Cirurgia Plástica Reconstrutiva e Maxilo-Facial do HSJ-FMUP, efetuou-se pesquisa mais alargada na Pubmed, Google Schoolar, Ovid e Mendeley Library. , com as palavras chave "engenharia de tecidos", "fração vascular do estroma", "angiogénese", "fatores de crescimento", "biomateriais", "stem cells" "scaffolds". Após pesquisa, 29 publicações reuniram conteúdo de interesse para a presente monografia. Resultados: A descoberta de células mesenquimatosas e outros tipos celulares na fração vascular do estroma do tecido adiposo colocaram a SFV no centro das atenções, como aposta estratégica no crescimento e diferenciação celular e na vasculogénese, sem necessidade de fatores de crescimento. Conclusões: Embora com aplicação ainda limitada, os resultados obtidos são encorajadores porque, para além da sua abundância e fácil acesso, a SVF do tecido adiposo reúne capacidade regenerativa em várias linhagens celulares, derivadas da sua pluripotência e características de elevada capacidade angiogénica.

Introduction:Major advances and innovations are being made in the fields of tissue engineering; however, the clinical applicability aiming the regeneration or replacement of tissues and organs has been limited by the difficulty in achieving, in vivo, an efficient vascularisation of the structures that ensure their viability after implantation. Vascularization strategies have multiplied, focusing on the optimization of support structures, the addition of targeted growth factors, and the use of specific cellular sources. Objectives: To evaluate current trends and strategies that use the stromal vascular fraction of adipose tissue as strategy to promote vascularization of structures ensuring their host integration. Methodology: Based on research developed between 3B's Research Group-UM and the Plastic Reconstructive and Maxillofacial Surgery Service of HSJ-FMUP, a broader search was conducted in Pubmed, Google Schoolar, Ovid and Mendeley Library, with the keywords "tissue engineering", "stromal vascular fraction", "angiogenesis", "growth factors", "biomaterials", "stem cells", "scaffolds". After search, 29 publications gathered content of interest for the present paper. Results: The discovery of mesenchymal cells and other cell types in the stromal vascular fraction of adipose tissue have placed SFV in the spotlight as a strategic tool on cell growth and differentiation and vasculogenesis, in a growth factor free process . Conclusions: Although its application is still limited, the results obtained are encouraging because, in addition to its abundance and easy access, adipose tissue SVF combines regenerative capacity in several cell lines, derived from its pluripotency and characteristics of high angiogenic capacity.

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Portugal
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Keywords

Ciências médicas e da saúde, Medical and Health sciences, FOS: Medical and health sciences

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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