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1.
مقالة ي الانجليزية | WPRIM | ID: wpr-1010408

الملخص

Gene therapies have been applied to the treatment of cardiovascular disease, but their use is limited by the need to deliver them to the right target. We have employed targeted contrast ultrasound-mediated gene transfection (TCUMGT) via ultrasound-targeted microbubble destruction (UTMD) to transfer therapeutic genes to specific anatomic and pathological targets. Phospholipid microbubbles (MBs) with pcDNA3.1-human vascular endothelial growth factor 165 (pcDNA3.1-hVEGF165) plasmids targeted to P-selectin (MB+P+VEGFp) were created by conjugating monoclonal antibodies against P-selectin to the lipid shell. These microbubbles were divided into four groups: microbubble only (MB), microbubble+P-selectin (MB+P), microbubble+pcDNA3.1-hVEGF165 plasmid (MB+VEGFp), and microbubble+ P-selectin+pcDNA3.1-hVEGF165 plasmid (MB+P+VEGFp). The reverse transcription polymerase chain reaction (RT-PCR) and enzyme-linked immunosorbent assay (ELISA) results showed that the VEGF gene was successfully transfected by TCUMGT and the efficiency is increased with P-selectin targeting moiety. UTMD-mediated delivery of VEGF increased myocardial vascular density and improved cardiac function, and MB+P+VEGFp delivery showed greater improvement than MB+VEGFp. This study drew support from TCUGMT technology and took advantage of targeted ultrasound contrast agent to identify ischemic myocardium, release pcDNA3.1-hVEGF165 recombinant plasmid, and improve the myocardial microenvironment, so promoting the restoration of myocardial function.


الموضوعات
Animals , Male , Rats , Genetic Therapy/methods , Microbubbles , Myocardial Ischemia/therapy , P-Selectin/genetics , Rats, Sprague-Dawley , Transfection/methods , Ultrasonics , Vascular Endothelial Growth Factor A/genetics
2.
Rev. Soc. Cardiol. Estado de Säo Paulo ; 14(3): 521-529, Maio-Jun. 2004. ilus
مقالة ي البرتغالية | LILACS | ID: lil-407468

الملخص

A biologia molecular evolui de forma vertiginosa e atualmente é tida como ferramenta indispensável na compreensão de doenças complexas e multifatoriais como a doença arterial coronariana. Tal abordagem gera uma nova forma de avaliação de doenças conhecidas e propicia a criação de novas técnicas, novos métodos diagnósticos e possíveis abordagens terapêuticas, interferindo diariamente no desfecho clínico final do paciente. O número de publicações em genética cardiovascular aumentou cinco vezes nos últimos 20 anos e a descoberta de novos polimorfismos e mutações bem como marcadores de inflamação, coagulação e genes relacionados ao metabolismo lipídico contribuem para se conhecer cada vez mais os aspectos intrínsecos envolvidos na aterosclerose. Este artigo irá abordar os principais avanços nessa área, identificando os polimorfismos mais comuns e sua relevância clínica segundo grandes ensaios e meta-análises,bem como fazer um breve racional acerca do desenho atual dos ensaios clínicos em biologia molecular


الموضوعات
Humans , Arteriosclerosis/physiopathology , Arteriosclerosis/genetics , Molecular Biology/methods , Molecular Biology/trends , Coronary Disease/physiopathology , Coronary Disease/genetics , Genetics/trends , Polymorphism, Genetic/physiology , Polymorphism, Genetic/genetics , Fibrinogen/physiology , Fibrinogen/genetics , P-Selectin/physiology , P-Selectin/genetics
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