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Hysteroscopy and the butyl-cyanoacrylate on experimental sterilization of rabbit uterine tubes
Rivoire, Henri Chaplin; Fagundes, Djalma José; Bigolin, Sergio; Fagundes, Anna Tereza Negrini.
  • Rivoire, Henri Chaplin; Head Rio Grande Federal Foundation University. Department of Surgery. Rio Grande. BR
  • Fagundes, Djalma José; UNIFESP. Department of Surgery. São Paulo. BR
  • Bigolin, Sergio; University Regional Integrada do Alto Uruguai. Erechim. BR
  • Fagundes, Anna Tereza Negrini; Santo Amaro University. São Paulo. BR
Acta cir. bras ; 22(5): 396-400, Sept.-Oct. 2007. ilus, tab
Article in English | LILACS | ID: lil-463465
ABSTRACT

PURPOSE:

To assess the sterilization effectiveness on uterine tube of rabbit by the cyanoacrylate adhesive.

METHODS:

Hysteroscopy tubal catheterization was performed randomly in 12 animals (24 uterine tubes) assigned to the sham group (GS) and 15 animals (30 uterine tubes) to the n-butyl-cyanoacrylate (GB). The female rabbits were observed during 30, 90 and 180 days and mated to fertile males. The no pregnant rabbits were submitted to in vitro burst pressure test for patency by air insufflation (40 mmHg). The microscopic assessment was performed to parameters of damages in epithelium caused by the adhesive, the degree of inflammatory process, morphometry data values of tube diameter (UT) (cm), mucosa thickness (MT) and the myosalpinx thickness (MyT) (mm). The mucosa cells densitometry (total optical density) was expressed by the amount of DNA. The significance of the differences in histological scores and in thickness measurements were made by ANOVA test (P value < 0.05).

RESULTS:

In all animals of GB the adhesive was attached to the mucosa; there was no pregnancy; no records of significant degree on inflammatory process; the patency test was negative and densitometry of DNA showed similar values to the both groups independently of observation periods. The layers thickness of GB-UT(1.118±0.117), GB-MT(0.447±0.247) and GB-MyT(0.853±0.097) were larger than the GS-UT(0.666±0.409), GS-MT(0.211±0.070) and GS-MyT(0.442±0.143).

CONCLUSION:

This approach offers a safe and feasible method of uterine tube obstruction.
RESUMO

OBJETIVO:

Verificar a eficácia do adesivo de cianoacrilato na esterilização de tubas uterinas de coelhas.

MÉTODOS:

A cateterização tubária por histeroscopia foi realizada randomicamente em 12 animais (24 tubas uterinas) formando o Grupo Sham (GS) e 15 animais (30 tubas uterinas) para o grupo do n-butil-cianoacrilato (GB). As coelhas foram observadas por 30, 90 e 180 dias e acasaladas com machos férteis. As tubas uterinas das fêmeas que não ficaram grávidas foram submetidas ao teste de pressão de rompimento in vitro, com insuflação de ar (40mmHg). A microscopia óptica estudou os danos causados ao epitélio pelo adesivo, o grau de processo inflamatório, a morfometria do diâmetro tubário (UT) (cm), da mucosa (MT) e do miosalpinge (MyT) (mm). A densitometria das células da mucosa (Densidade Optica Total) foi expressa pela contagem do DNA. As significâncias dos diferentes escores histológicos e das medidas das camadas foram avaliadas pelo Teste de ANOVA (P<0,005).

RESULTADOS:

Em todos os animais do GB o adesivo estava aderido na mucosa tubária, não ocorreu prenhez, não houve significância nos graus do processo inflamatório, o teste de perviedade foi negativo e a densitometria do DNA apresentou valores similares em todos os grupos, independente do período de observação. A medida das camadas do GB-UT(1.118±0.117), GB-MT(0.447±0.247) e GB-MyT (0.853±0.097) foi maior que as dos GS-UT(0.666±0.409), GS-MT(0.211±0.070) e GS-MyT(0.442±0.143).

CONCLUSÃO:

O procedimento proposto foi de fácil execução e eficaz para obstrução da tuba uterina de coelhas.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Sterilization, Tubal / Tissue Adhesives / Hysteroscopy / Cyanoacrylates / Fallopian Tubes Type of study: Evaluation studies / Prognostic study Limits: Animals / Pregnancy Language: English Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2007 Type: Article Affiliation country: Brazil Institution/Affiliation country: Head Rio Grande Federal Foundation University/BR / Santo Amaro University/BR / UNIFESP/BR / University Regional Integrada do Alto Uruguai/BR

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Full text: Available Index: LILACS (Americas) Main subject: Sterilization, Tubal / Tissue Adhesives / Hysteroscopy / Cyanoacrylates / Fallopian Tubes Type of study: Evaluation studies / Prognostic study Limits: Animals / Pregnancy Language: English Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2007 Type: Article Affiliation country: Brazil Institution/Affiliation country: Head Rio Grande Federal Foundation University/BR / Santo Amaro University/BR / UNIFESP/BR / University Regional Integrada do Alto Uruguai/BR