The histochemistry of the rodent's placenta

Wislocki, George B.; Deane, Helen Wendler; Dempsey, Edward W.

doi:10.1002/aja.1000780302

Cited by 123 publications

(16 citation statements)

References 29 publications

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“…Já nos locais distais desta placenta, verificavam-se células prismáticas dotadas de poucas vilosidades, podendo ser caracterizadas como região lisa do endoderma visceral. Tais características estão de acordo com as observações produzidas por Sansom (1922), Wislocki et al (1946), Anderson (1959), Jollie (1990), Oliveira et al (2008) e Freyer & Renfree (2009 para outras espécies de roedores.…”

Section: Discussionunclassified

Dinâmica da inversão do saco vitelino em preás (Galea spixii Wagler, 1831)

et al. 2013

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Pesq. Vet. Bras. 33(8) The aim of this study was to study the time of yolk sac inversion as well as the dynamics resulting from this process in galea throughout pregnancy. For this, conventional histological techniques, scanning electron microscopy and transmission electron microscopy were used. Parietal and visceral endoderm delimiting the yolk sac cavity was observed at 12 days of pregnancy. The parietal endoderm was coating the fetal surface of the chorioallantoic placenta as well as delimiting the decidua capsularis area. This endoderm had prismatic format and were apart from the trophoblast by an enlarged Reichert's membrane. The visceral endoderm had vitelline vessels and there were villi only in certain areas. At 14 days of pregnancy the yolk sac inversion was characterized by the degeneration of parietal endoderm and mural trophoblast, and also the gradual disappearance of the Reichert's membrane. So it made the visceral endoderm establish an interface with the uterine epithelium. After the inversion, the parietal endoderm which remained intact was the one that rested on the chorioallantoic placenta surface. It presented cells with high columnar format and pseudostratified epithelium featured. The visceral endoderm presented many apical villi, especially in areas close to the chorioallantoic placenta. The continued development of the embryo and chorioallantoic placenta evidenced the emergence of an important apposition area between visceral and parietal endoderm. The yolk sac inversion represented an anatomical arrangement in favor of the embryo development as well as an evolutionary trait in this rodent species.INDEX TERMS: Galea, Galea spixii, yolk sac, visceral endoderm, parietal endoderm, inversion.

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Section: Discussionunclassified

Dinâmica da inversão do saco vitelino em preás (Galea spixii Wagler, 1831)

et al. 2013

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“…The ammonium sulphide method of locating embryonic résorptions is based on the discovery by Wislocki, Deane & Dempsey (1946) that the placenta of the rat contains iron. Nylander (1953) confirmed these authors' result and established that the iron was present in the villous portion of the visceral yolk sac in the form offerritin.…”

Section: Discussionmentioning

confidence: 99%

The Effects of Starvation or of Treatment With Cytotoxic Agents on Pregnancy in Mice

Gebhardt¹

1969

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“…The reason for this is not known. However, it has been suggested that the trophoblast synthesizes blood proteins for the embryo (Wislocki, Deane & Dempsey, 1946), and that the trophoblast cells 'hand-on' glycogen from cell to cell until the embryo is reached (Bridgman, 1948). Without the drain on food resources by the developing embryo, it may be that the trophoblast itself benefits and grows to the large dimensions described.…”

Section: Methodsmentioning

confidence: 99%