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1.
Rev. Col. Bras. Cir ; 45(1): e1577, fev. 2018. graf
Article in English | LILACS | ID: biblio-956549

ABSTRACT

ABSTRACT Objectives: to evaluate estradiol levels and autotransplantation heated ovarian tissue effects, after vitrification, on rats bone metabolism previously oophorectomized bilaterally. Methods: experimental study with 27 rats aged 11 to 12 weeks and weighing 200g to 300g, submitted to bilateral oophorectomy and ovarian tissue cryopreservation for subsequent reimplantation. Animals were divided into two groups, A and B, with 8 and 19 rats, respectively. Autotransplantation occurred in two periods according to castration time: after one week, in group A, and after one month in group B. Serum estradiol measurements and ovary and tibia histological analysis were performed before and after oophorectomy period (early or late) and one month after reimplantation. Results: in groups A and B, tibia median cortical thickness was 0.463±0.14mm (mean±SD) at the baseline, 0.360±0.14mm after oophorectomy and 0.445±0.17mm one month after reimplantation p<0.005). Trabecular means were 0.050±0.08mm (mean±SD) at baseline, 0.022±0.08mm after oophorectomy and 0.049±0.032mm one month after replantation (p<0.005). There was no statistical difference in estradiol variation between the two study groups (p=0.819). Conclusion: cryopreserved ovarian tissue transplantation restored bone parameters, and these results suggest that ovarian reimplantation in women may have the same beneficial effects on bone metabolism.


RESUMO Objetivos: avaliar os níveis de estradiol e os efeitos do autotransplante de tecido ovariano aquecido, após vitrificação, no metabolismo ósseo de ratas previamente ooforectomizadas bilateralmente. Métodos: trabalho experimental com 27 ratas com idades entre 11 e 12 semanas e pesando 200g a 300g, submetidas à ooforectomia bilateral e criopreservação de tecido ovariano para posterior reimplante. Os animais foram divididos em dois grupos, A e B, com oito e 19 ratas, respectivamente. O autotransplante ocorreu em dois períodos de acordo com o tempo de castração: após uma semana, no grupo A, e após um mês no grupo B. Mensurações de estradiol sérico e análise histológica de ovário e tíbia foram feitos antes e após o período de ooforectomia (precoce ou tardio) e um mês após o reimplante. Resultados: nos grupos A e B, as espessuras corticais médias da tíbia foram 0,463±0,14mm (média±DP) na linha de base, 0,360±0,14mm após ooforectomia e 0,445±0,17mm em um mês após o reimplante (p<0,005). As médias trabeculares foram 0,050±0,08mm (média±DP) na linha de base, 0,022±0,08mm após ooforectomia e 0,049±0,032mm em um mês após o reimplante (p<0,005). Não houve diferença estatística entre a variação do estradiol entre os dois grupos de estudo (p=0,819). Conclusão: o transplante de tecido ovariano criopreservado restabeleceu os parâmetros ósseos, e estes resultados sugerem que a reimplantação ovariana em mulheres pode apresentar os mesmos efeitos benéficos sobre o metabolismo ósseo.


Subject(s)
Animals , Female , Rats , Ovary/transplantation , Bone and Bones/metabolism , Cryopreservation , Ovariectomy , Rats, Wistar , Estradiol/blood
2.
Rev Rene (Online) ; 17(3): 401-408, maio.-jun.2016.
Article in English | LILACS, BDENF | ID: lil-790956

ABSTRACT

Comparar a qualidade de vida dos pacientes transplantados hepáticos que receberam fígado de doadorcom idade ≤60 ou >60 anos. Métodos: estudo prospectivo, com amostra de 141 receptores de fígado de doadorcom idade igual ou menor de 60 anos e receptores de fígado de doador idoso, em um centro de referência.Utilizou-se instrumento para identificação e o questionário Short Form-36. Foram aplicados os testes t-Studente Mann-Whitney para comparação entre grupos. Resultados: identificaram-se maiores níveis de qualidade devida com diferenças estatisticamente significativas: Grupo A no aspecto social (p=0,02) e o Grupo B com >50meses de transplante (p=0,05) no componente sumarizado físico. Conclusão: a qualidade de vida de receptoresde fígado de doador idoso foi semelhante aos que receberam enxerto de doadores mais jovens na maioria dasdimensões. O tempo de transplante teve impacto positivo na qualidade de vida de receptores idosos...


Subject(s)
Humans , Aged , Nursing , Quality of Life , Donor Selection , Liver Transplantation
3.
Acta cir. bras ; Acta cir. bras;29(5): 299-305, 05/2014. tab, graf
Article in English | LILACS | ID: lil-709231

ABSTRACT

PURPOSE: To compare two rat ovary cryopreservation techniques (vitrification vs. slow freezing) and two postmenopausal stages (early vs. late) with regard to graft take. METHODS: Thirty-three Wistar rats were submitted to bilateral oophorectomy. One ovary was submitted to histological analysis while the other was cryopreserved by slow freezing or vitrification. The cryopreserved ovary was thawed and reimplanted in the greater omentum one week (early menopause) or one month (late menopause) after oophorectomy. One month after ovary reimplantation, the graft take was evaluated macroscopically and histologically. RESULTS: Six of the animals were used ascontrols and seven died. The histological findings of 20 animals included atretic follicles (n=4), primordial follicles (n=2), and corpus luteum with primordial follicles (n=3). No ovarian tissue was found in 11 animals. Vitrification resulted in a higher graft take rate than slow freezing (50% vs. 38.5%), but the difference was not statistically significant. However, the graft take rate was 9.3 times higher in the early than in the late postmenopausal stage (61.5% vs. 14.3%) (p=0.043). CONCLUSION: Vitrification was superior to slow freezing as ovarian cryopreservation technique, and grafting was significantly more successful when the ovary was reimplanted in the late postmenopausal stage. .


Subject(s)
Animals , Female , Cryopreservation/methods , Ovary/anatomy & histology , Ovary/transplantation , Postmenopause/physiology , Corpus Luteum/anatomy & histology , Cryoprotective Agents/pharmacology , Freezing , Ovarian Follicle/anatomy & histology , Ovariectomy/methods , Rats, Wistar , Replantation , Reproducibility of Results , Time Factors , Vitrification
4.
Clinics ; Clinics;66(8): 1413-1418, 2011. ilus, tab
Article in English | LILACS | ID: lil-598397

ABSTRACT

OBJECTIVES: This paper discusses the influence of a para-areolar incision in the upper outer quadrant of the breast on the location of the sentinel lymph node in a canine model. METHODS: The sentinel lymph node was marked with technetium-99, which was injected into the subareolar skin of the cranial breast. After the marker had migrated to the axilla, an arcuate para-areolar incision was performed 2 cm from the nipple in the upper outer quadrant. Patent blue dye was then injected above the upper border of the incision. At the marked site, an axillary incision was made, and the sentinel lymph node was identified by gamma probe and/or by direct visualization of the dye. The agreement between the two injection sites and the two sentinel lymph node identification methods was determined. Our sample group consisted of 40 cranial breasts of 23 adult females of the species Canis familiaris. The data were analyzed by using the McNemar test and by determining the kappa agreement coefficient. RESULT: Our findings showed that in 95 percent of the breasts, the sentinel lymph node was identified by the injection of technetium-99 m into the subareolar region, and in 82 percent of the cases, the sentinel lymph node was identified by the injection of patent blue dye above the upper border of the incision. The methods agreed 82 percent of the time. CONCLUSIONS: Previous para-areolar incisions in the upper outer quadrant did not interfere significantly with the biopsy when the dye was injected above the upper border of the incision.


Subject(s)
Animals , Dogs , Female , Mammary Neoplasms, Animal/pathology , Mammary Neoplasms, Animal , Radiopharmaceuticals , Sentinel Lymph Node Biopsy/methods , Disease Models, Animal , Nipples/surgery
5.
Acta cir. bras ; Acta cir. bras;18(6): 514-517, nov.-dez. 2003. ilus
Article in Portuguese | LILACS | ID: lil-360219

ABSTRACT

Pesquisa do Linfonodo Sentinela (LS) tem se mostrado efetiva na avaliação axilar nas portadoras de neoplasia mamária. O LS negativo torna desnecessário o esvaziamento axilar. OBJETIVO: Identificar o LS da região subareolar da mama em cadelas utilizando corante azul patente (AP), Tecnécio Tc99m ou a associação de ambas as técnicas e compará-las quanto à sensibilidade na detecção do linfonodo sentinela. MÉTODOS: Foram estudadas dezessete cães fêmeas. Um total de 55 mamas foram analisadas. Utilizou-se AP (2,5 por cento/0,5 ml) e/ou Tc99m (1,0 mC/0,8ml) para identificação do LS. A aplicação do Tc99m era realizada duas horas antes da realização do experimento. O AP era injetado na região subareolar da mama. Localizado o LS, realizava-se sua exérese. RESULTADOS: Dos 44 linfonodos em que se utilizou AP, pôde-se verificar que 40 estavam corados (90,90 por cento). Dos 48 linfonodos em que se utilizou Tc99m, 47 linfonodos estavam radioativos (97,91 por cento) (p=0.18; k= - 0.067). Nas 37 mamas em que se associou AP ao Tc99m, apesar de 02 linfonodos não estarem corados, todos estavam radioativos (AP vs AP+Tc: p=0.12; k=0.083; Tc vs AP+Tc: p=1.0; k=0.018). CONCLUSAO: O Tc99m e o corante azul patente, isolados ou associados, prestam-se à identificação do LS da mama do animal.


Subject(s)
Animals , Female , Dogs , Sentinel Lymph Node Biopsy/methods , Breast Neoplasms , Coloring Agents
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