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Influence of cyclosporine A on mucociliary system after lung transplantation in rats
Xavier, Alexandre Martins; Pêgo-Fernandes, Paulo Manuel; Correia, Aristides Tadeu; Pazetti, Rogerio; Monteiro, Rosangela; Canzian, Mauro; Jatene, Fabio Biscegli.
Affiliation
  • Xavier, Alexandre Martins; Federal University of São Paulo. Department of Surgery. Thoracic Surgery Division. São Paulo. BR
  • Pêgo-Fernandes, Paulo Manuel; University of São Paulo. Medical School. Department of Cardiopneumology. Thoracic Surgery Division. São Paulo. BR
  • Correia, Aristides Tadeu; University of São Paulo. Medical School. Clinics Hospital. Department of Cardiopneumology. São Paulo. BR
  • Pazetti, Rogerio; University of São Paulo. Medical School. Laboratory of Thoracic Surgery Research. São Paulo. BR
  • Monteiro, Rosangela; University of São Paulo. Medical School. Clinics Hospital. InCor. São Paulo. BR
  • Canzian, Mauro; University of São Paulo. Medical School. Clinics Hospital. InCor. São Paulo. BR
  • Jatene, Fabio Biscegli; University of São Paulo. Medical School. Department of Cardiopneumology. Thoracic Surgery Division. São Paulo. BR
Acta cir. bras ; 22(6): 465-469, Nov.-Dec. 2007. ilus, tab, graf
Article in En | LILACS | ID: lil-472577
Responsible library: BR1.1
ABSTRACT

PURPOSE:

To investigate the function of the bronchial mucociliary system in transplanted rat lungs with and without the influence of immunosuppression.

METHODS:

Thirty-six rats underwent single-lung transplantation and were divided into two groups, one of which received cyclosporine treatment, and the control group which did not. Cyclosporine was administered subcutaneously in doses of 10 mg/kg daily. The rats were sacrificed 2, 15 or 30 days after transplantation. In situ bronchial mucociliary transport (MCT) and ciliary beat frequency (CBF) were determined proximal and distal to the bronchial anastomosis.

RESULTS:

Significant progressive improvement on MCT, proximal and distal to the anastomotic site, was also found in the cyclosporine-treated group at 15 and 30 days (p<0.01). No significant change in MCT was found in the control group. CBF behavior in the two groups. Histological analysis showed that rejection was significantly higher in the control group (p<0.05).

CONCLUSION:

Cyclosporine has a positive influence on bronchial mucociliary transport but not on CBF due to the effect of the rejection mechanism.
RESUMO

OBJETIVO:

Investigar a função do sistema mucociliar em ratos transplantados sob a influência de imunossupressores.

MÉTODOS:

Trinta e seis ratos foram submetidos ao transplante pulmonar unilateral e divididos em dois grupos, onde um grupo foi tratado com ciclosporina e outro foi controle. Administrada ciclosporina por via subcutânea na dose de 10 mg/kg diariamente. Os ratos foram sacrificados 2, 15 e 30 dias após o transplante pulmonar. O transporte mucociliar brônquico (TMC) in situ e a freqüência de batimento ciliar (FBC) foram analisados na porção proximal e distal à anastomose brônquica. Realizada correlação dos achados com parâmetros gasométricos e histologia.

RESULTADOS:

Foi encontrada melhora progressiva e significante no TMC na região proximal e distal a anastomose no grupo que recebeu ciclosporina em 15 e 30 dias (p<0,01). Não houve diferença na FBC nos dois grupos estudados. A análise histológica mostrou que a rejeição foi significantemente maior no grupo controle (p<0,05). A oxigenação foi melhor nos animais que receberam a ciclosporina.

CONCLUSÃO:

A ciclosporina exerceu influência positiva no transporte mucociliar brônquico, provavelmente por sua ação imunossupressora.
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Full text: 1 Index: LILACS Main subject: Mucociliary Clearance / Lung Transplantation / Cyclosporine / Immunosuppressive Agents Limits: Animals Language: En Journal: Acta cir. bras Journal subject: CIRURGIA GERAL / Procedimentos Cir£rgicos Operat¢rios Year: 2007 Type: Article
Full text: 1 Index: LILACS Main subject: Mucociliary Clearance / Lung Transplantation / Cyclosporine / Immunosuppressive Agents Limits: Animals Language: En Journal: Acta cir. bras Journal subject: CIRURGIA GERAL / Procedimentos Cir£rgicos Operat¢rios Year: 2007 Type: Article