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1.
Rev. ginecol. obstet ; 8(4): 231-4, out.-dez. 1997.
Article in Portuguese | LILACS | ID: lil-205735

ABSTRACT

O fluxo sanguineo utero-placentario aumenta gradativamente durante a gestacao, associado a uma diminuicao progressiva da resistencia nas arterias uterinas e espiraladas. Controversias existem de quando a circulacao no espaco interviloso comecaria a existir. Atualmente, acredita-se que so a partir da decima segunda semana gestacional se iniciaria a circulacao no espaco interviloso e que estaria diretamente relacionada a invasao trofoblastica. Atraves de estudos dopplervelocimetricos foi possivel melhor compreensao da fisiopatologia desta invasao nas das arterias utero-placentarias na gestacao. Assim, observou-se que existia uma relacao entre as alteracoes da invasao trofoblastica e o prognostico da gestacao...


Subject(s)
Humans , Female , Pregnancy , Trophoblastic Neoplasms/physiopathology , Ultrasonography, Doppler , Abortion, Spontaneous/diagnosis , Fetal Growth Retardation/diagnosis , Trophoblastic Neoplasms , Pre-Eclampsia/etiology
3.
Ginecol. obstet. Méx ; 63(11): 478-82, nov. 1995. tab
Article in Spanish | LILACS | ID: lil-164465

ABSTRACT

De enero de 1988 a marzo de 1994, 83 pacientes con diagnóstico de Enfermedad Trofoblástica Gestacional fueron identificadas. La incidencia fue de 2.4 por 1000 nacimientos. La edad promedio de las pacientes fue de 28.9 años. El 44.5 fueron multíparas y en 25.3 por ciento existió el antecedente de embarazo molar. El 77.1 por ciento de los casos pertenece al estrato socioeconómico bajo. El diagnóstico se hizo mediante ultrasonido en 89.1 por ciento. Se realizó legrado uterino instrumental en 89.1 por ciento con confirmación histológica en 100 por ciento de los casos. De los 83 casos de embarazo molar, 74 se clasificaron como molas completas, cuatro incompletas, cuatro invasoras y un coriocarcinoma. Se realizó seguimiento en todas las pacientes con fracción beta de hormona gonadotrofina coriónica, que fue negativa en la mayoría de los casos en la semana 8 posterior a la evacuación. Se indicaron anticonceptivos orales en 73.4 por ciento de las pacientes


Subject(s)
Pregnancy , Adult , Humans , Female , Curettage , Hospitals/statistics & numerical data , Hydatidiform Mole , Maternal Age , Socioeconomic Factors , Trophoblastic Neoplasms/epidemiology , Trophoblastic Neoplasms/physiopathology
4.
West Indian med. j ; 42(4): 142-3, Dec. 1993.
Article in English | LILACS | ID: lil-130556

ABSTRACT

Cell proliferative activity and the over accumulation of P53 suppressor gene were evaluated in 26 cases of gestational trophoblastic disease and five cases with normal placentae. Formalin-fixed, paraffin-embedded histological sections were used for immunohistochemistry, utilizing the avidin-biotin-peroxidase technique and antibodies to PCNA (proliferative cell nuclear antigen) and to P53 (product of suppressor gene). Positive reactions for PCNA were graded from 1+ to 3+ (1+ - less than 10 per cent of cells; 2+ - 10 - 50 per cent ; 3+ - more than 50 per cent ). Eight of 10 cases of choriocaricinoma (80 per cent ) showed moderate to strong reactivity for PCNA (2+ and 3+). All 9 cases with hydatidiform mole and 6 of 7 cases with partial mole also demonstrated 2+ and 3+ reactions for PCNA. There was minimal or no PCNA straining in the trophoblastic cells of normal placentae. Five of 10 cases with choriocarcinoma (50 per cent ) exhibited P53 overaccumulattion as did 7 of 9 cases with hydatidiform mole (78 per cent ). In hydatidiform moles, P53 staining was limited to the areas of trophoblastic proliferation separate from chorionic villi. None of the partial moles or normal placentae showed P53 overaccumlation. It is concluded that the cell proliferative activity of choriocarcinomas as well as complete and partial hydatidiform moles are comparable. On the other hand, the mutation of P53 suppressor gene, as demonstrated by the overaccumulation of P53 protein, is seen only in true trophoblastic neoplasms, namely choriocarcinomas and hydatidiform moles.


Subject(s)
Humans , Pregnancy , Female , Suppression, Genetic , Uterine Neoplasms/parasitology , Cell Division , Trophoblastic Neoplasms/physiopathology , Placenta/physiopathology , Hydatidiform Mole/physiopathology , Hydatidiform Mole, Invasive/physiopathology
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