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1.
Braz J Cardiovasc Surg ; 35(3): 387-391, 2020 06 01.
Artículo en Inglés | MEDLINE | ID: mdl-32549110

RESUMEN

Total arch replacement and stent trunk were performed for two patients. One of these underwent a total bilateral carotid artery replacement in anatomical position while the other underwent partial carotid artery dissection. The first patient demonstrated no neurological complication after surgery and a postoperative computed tomography angiography (CTA) showed bilateral common carotid artery patency. However, the second patient had neurological dysfunction after surgery, while a postoperative CTA showed occlusion of the left common carotid artery. Anatomical replacement for a common carotid artery dissection with thrombus has the potential to significantly improve cerebral perfusion and reduce postoperative neurological complications.


Asunto(s)
Disección Aórtica , Trombosis , Disección Aórtica/complicaciones , Disección Aórtica/diagnóstico por imagen , Disección Aórtica/cirugía , Arteria Carótida Común/diagnóstico por imagen , Arteria Carótida Común/cirugía , Disección , Humanos , Stents , Trombosis/diagnóstico por imagen , Trombosis/etiología , Resultado del Tratamiento
2.
Rev. bras. cir. cardiovasc ; Rev. bras. cir. cardiovasc;35(3): 387-391, May-June 2020. tab, graf
Artículo en Inglés | LILACS, Sec. Est. Saúde SP | ID: biblio-1137251

RESUMEN

Abstract Total arch replacement and stent trunk were performed for two patients. One of these underwent a total bilateral carotid artery replacement in anatomical position while the other underwent partial carotid artery dissection. The first patient demonstrated no neurological complication after surgery and a postoperative computed tomography angiography (CTA) showed bilateral common carotid artery patency. However, the second patient had neurological dysfunction after surgery, while a postoperative CTA showed occlusion of the left common carotid artery. Anatomical replacement for a common carotid artery dissection with thrombus has the potential to significantly improve cerebral perfusion and reduce postoperative neurological complications.


Asunto(s)
Humanos , Trombosis/etiología , Trombosis/diagnóstico por imagen , Disección Aórtica/cirugía , Disección Aórtica/complicaciones , Disección Aórtica/diagnóstico por imagen , Stents , Resultado del Tratamiento , Arteria Carótida Común/cirugía , Arteria Carótida Común/diagnóstico por imagen , Disección
3.
Braz J Med Biol Res ; 51(9): e6948, 2018 Jul 23.
Artículo en Inglés | MEDLINE | ID: mdl-30043854

RESUMEN

It is increasingly evident that the microenvironment of bone can influence cancer phenotype in many ways that favor growth in bone. CD147, a transmembrane protein of the immunoglobulin (Ig) superfamily, was identified independently in different species and has many designations across different species. However, expression levels of CD147 mRNA in bone cancer have not been described. In this study, we have used real-time fluorescence quantification (RT-PCR) to demonstrate CD147 expression in malignant bone cancer and benign bone tumor tissues. The results suggested that the expression of CD147 gene was significantly up-regulated in malignant bone cancer. Moreover, we found that over-expressed RANKL progressively enhanced osteoclast formation up to 48 h, which suggested that RANKL could promote the formation of osteoclast, indicating that both CD147 and RANKL play important roles in the formation of osteoclasts. Furthermore, the expressions of four osteoclast specific expression genes, including TRACP, MMP-2, MMP-9 and c-Src, were analyzed using RT-PCR. The results indicated that four osteoclast-specific expression genes were detectable in all osteoclast with different treatments. However, the highest expression level of these four osteoclast-specific expression genes appears in the CD147+ RANKL group and the lowest expression level of these four osteoclast-specific expression genes appears with si-RANKL treatment. Characterization of the role of CD147 in the development of tumors should lead to a better understanding of the changes occurring at the molecular level during the development and progression of primary human bone cancer.


Asunto(s)
Basigina/genética , Neoplasias Óseas/genética , Osteoclastos/metabolismo , Ligando RANK/metabolismo , Regulación hacia Arriba , Anciano , Western Blotting , Neoplasias Óseas/secundario , Neoplasias Óseas/terapia , Femenino , Regulación Neoplásica de la Expresión Génica , Humanos , Masculino , Persona de Mediana Edad , Osteoblastos/metabolismo , Osteoclastos/citología , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa
4.
Rev. bras. pesqui. méd. biol ; Braz. j. med. biol. res;51(9): e6948, 2018. tab, graf
Artículo en Inglés | LILACS | ID: biblio-951763

RESUMEN

It is increasingly evident that the microenvironment of bone can influence cancer phenotype in many ways that favor growth in bone. CD147, a transmembrane protein of the immunoglobulin (Ig) superfamily, was identified independently in different species and has many designations across different species. However, expression levels of CD147 mRNA in bone cancer have not been described. In this study, we have used real-time fluorescence quantification (RT-PCR) to demonstrate CD147 expression in malignant bone cancer and benign bone tumor tissues. The results suggested that the expression of CD147 gene was significantly up-regulated in malignant bone cancer. Moreover, we found that over-expressed RANKL progressively enhanced osteoclast formation up to 48 h, which suggested that RANKL could promote the formation of osteoclast, indicating that both CD147 and RANKL play important roles in the formation of osteoclasts. Furthermore, the expressions of four osteoclast specific expression genes, including TRACP, MMP-2, MMP-9 and c-Src, were analyzed using RT-PCR. The results indicated that four osteoclast-specific expression genes were detectable in all osteoclast with different treatments. However, the highest expression level of these four osteoclast-specific expression genes appears in the CD147+ RANKL group and the lowest expression level of these four osteoclast-specific expression genes appears with si-RANKL treatment. Characterization of the role of CD147 in the development of tumors should lead to a better understanding of the changes occurring at the molecular level during the development and progression of primary human bone cancer.


Asunto(s)
Humanos , Masculino , Femenino , Persona de Mediana Edad , Anciano , Osteoclastos/metabolismo , Neoplasias Óseas/genética , Regulación hacia Arriba , Basigina/genética , Ligando RANK/metabolismo , Osteoblastos/citología , Osteoblastos/metabolismo , Neoplasias Óseas/secundario , Neoplasias Óseas/terapia , Regulación Neoplásica de la Expresión Génica , Western Blotting , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa
5.
Acta cir. bras. ; 31(12): 807-812, Dec. 2016. ilus, graf
Artículo en Inglés | VETINDEX | ID: vti-20995

RESUMEN

PURPOSE:To investigate the role of bradykinin in a rat lung transplantation (LTx) model and preliminarily discuss the relationship between bradykinin and CD26/DPP-4.METHODS:Rats were randomly divided into four groups: Control (CON), Sham, low potassium dextranglucose (LPD), and AB192 (n=15/group). Orthotopic single LTx was performed in the LPD and AB192 groups. The donor lungs were flush-perfused and preserved with low potassium dextranglucose (LPD) or LPD+CD26/DPP-4 catalytic inhibitor (AB192). LTx was performed after 18 h cold ischemia time and harvested two days post-LTx. Blood gas analysis (PO2), wet/dry weight ratio (W/D), myeloperoxidase activity (MPO), and lipid peroxidation (MDA) were analyzed at 48 hr after transplantation. Immunohistochemical (IHC) analysis was performed in the same sample and validated by Western-Blot.RESULTS:Compared to the LPD group, the AB192 group showed higher PO2, lower W/D ratio, and decreased MPO and MDA. IHC studies showed strong bradykinin β2 receptor (B2R) staining in the LPD group, especially in inflammatory cells, alveolar macrophages, and respiratory epithelial cells. Expression of B2R by Western-Blot was significantly different between the AB192 and LPD groups.CONCLUSION:Bradykinin may be a competitive substrate of DPP-4, and decreased bradykinin levels may enhance protective effects against ischemia/reperfusion injury during LTx.(AU)


Asunto(s)
Animales , Ratas , Bradiquinina/análisis , Daño por Reperfusión/terapia , Daño por Reperfusión/veterinaria , Trasplante de Pulmón/veterinaria , Inmunohistoquímica/veterinaria
6.
Acta cir. bras ; Acta cir. bras;31(12): 807-812, Dec. 2016. graf
Artículo en Inglés | LILACS | ID: biblio-837655

RESUMEN

ABSTRACT PURPOSE: To investigate the role of bradykinin in a rat lung transplantation (LTx) model and preliminarily discuss the relationship between bradykinin and CD26/DPP-4. METHODS: Rats were randomly divided into four groups: Control (CON), Sham, low potassium dextranglucose (LPD), and AB192 (n=15/group). Orthotopic single LTx was performed in the LPD and AB192 groups. The donor lungs were flush-perfused and preserved with low potassium dextranglucose (LPD) or LPD+CD26/DPP-4 catalytic inhibitor (AB192). LTx was performed after 18 h cold ischemia time and harvested two days post-LTx. Blood gas analysis (PO2), wet/dry weight ratio (W/D), myeloperoxidase activity (MPO), and lipid peroxidation (MDA) were analyzed at 48 hr after transplantation. Immunohistochemical (IHC) analysis was performed in the same sample and validated by Western-Blot. RESULTS: Compared to the LPD group, the AB192 group showed higher PO2, lower W/D ratio, and decreased MPO and MDA. IHC studies showed strong bradykinin β2 receptor (B2R) staining in the LPD group, especially in inflammatory cells, alveolar macrophages, and respiratory epithelial cells. Expression of B2R by Western-Blot was significantly different between the AB192 and LPD groups. CONCLUSION: Bradykinin may be a competitive substrate of DPP-4, and decreased bradykinin levels may enhance protective effects against ischemia/reperfusion injury during LTx.


Asunto(s)
Animales , Masculino , Ratas , Bradiquinina/fisiología , Daño por Reperfusión/patología , Trasplante de Pulmón , Dipeptidil Peptidasa 4/fisiología , Disfunción Primaria del Injerto/patología , Pulmón/irrigación sanguínea , Inmunohistoquímica , Peroxidación de Lípido , Daño por Reperfusión/fisiopatología , Daño por Reperfusión/metabolismo , Distribución Aleatoria , Western Blotting , Modelos Animales de Enfermedad , Disfunción Primaria del Injerto/fisiopatología , Antagonistas del Receptor de Bradiquinina B2/metabolismo , Pulmón/efectos de los fármacos
7.
Acta Cir Bras ; 31(12): 807-812, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-28076504

RESUMEN

PURPOSE:: To investigate the role of bradykinin in a rat lung transplantation (LTx) model and preliminarily discuss the relationship between bradykinin and CD26/DPP-4. METHODS:: Rats were randomly divided into four groups: Control (CON), Sham, low potassium dextranglucose (LPD), and AB192 (n=15/group). Orthotopic single LTx was performed in the LPD and AB192 groups. The donor lungs were flush-perfused and preserved with low potassium dextranglucose (LPD) or LPD+CD26/DPP-4 catalytic inhibitor (AB192). LTx was performed after 18 h cold ischemia time and harvested two days post-LTx. Blood gas analysis (PO2), wet/dry weight ratio (W/D), myeloperoxidase activity (MPO), and lipid peroxidation (MDA) were analyzed at 48 hr after transplantation. Immunohistochemical (IHC) analysis was performed in the same sample and validated by Western-Blot. RESULTS:: Compared to the LPD group, the AB192 group showed higher PO2, lower W/D ratio, and decreased MPO and MDA. IHC studies showed strong bradykinin ß2 receptor (B2R) staining in the LPD group, especially in inflammatory cells, alveolar macrophages, and respiratory epithelial cells. Expression of B2R by Western-Blot was significantly different between the AB192 and LPD groups. CONCLUSION:: Bradykinin may be a competitive substrate of DPP-4, and decreased bradykinin levels may enhance protective effects against ischemia/reperfusion injury during LTx.


Asunto(s)
Bradiquinina/fisiología , Dipeptidil Peptidasa 4/fisiología , Trasplante de Pulmón , Pulmón/irrigación sanguínea , Disfunción Primaria del Injerto/patología , Daño por Reperfusión/patología , Animales , Western Blotting , Antagonistas del Receptor de Bradiquinina B2/metabolismo , Modelos Animales de Enfermedad , Inmunohistoquímica , Peroxidación de Lípido , Pulmón/efectos de los fármacos , Masculino , Disfunción Primaria del Injerto/fisiopatología , Distribución Aleatoria , Ratas , Daño por Reperfusión/metabolismo , Daño por Reperfusión/fisiopatología
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