Search results for " decidua"
showing 5 items of 5 documents
Using machine learning on tree-ring data to determine the geographical provenance of historical construction timbers
2023
Funder: Bavarian Climate Research Network (BayKliF)
C1q is involved in human trophoblast invasion
2007
During the development of human placenta, extravillous trophoblast (EVT) departs from anchoring chorionic villi and invades the maternal decidua. Immunohistochemical analysis of decidua obtained from voluntary abortions showed that C1q was widely distributed in the decidual stroma with intense staining around invading trophoblast, while undetectable in non pregnant uterus. Based on these findings, we hypothesized that C1q may be involved in the migration of EVT. To this end, we investigated the ability of EVT to adhere to solid-phase bound C1q and to migrate using a transwell model system with inserts coated with C1q. Our results showed that EVT strongly adhered to C1q to an extent similar …
Eiropas lapegles (Larix decidua) radiālā pieauguma saistība ar meteoroloģiskajiem faktoriem Latvijā.
2021
Klimata izmaiņu ietekmē, mainoties vides apstākļiem mežā, mainas koku sugu sastāvs. Lai nodrošinātu kvalitatīvās un kvantitatīvās prasības koksnes ražošanā, nākotnē var paredzēt meža apsaimniekošanu, izmantojot introducētu koku sugu audzēšanu, piemēram, Eiropas lapegli. Tam nepieciešams novērtēt faktorus, kas limitē konkrētas koku sugas augšanu un koksnes pieaugumu. Lai noskaidrotu, kuri ir limitējošie meteoroloģiskie faktori, kas ietekmē Eiropas lapegles ikgadējo radiālo papildpieaugumu, veikta paraugu ieguve desmit Eiropas lapegļu mežaudzēs Latvijā, iegūto paraugu datu apstrāde un analīze. Iegūtie lapegļu gadskārtas paraugi šķērsdatēti, iegūstot katras mežaudzes hronoloģiju. Lai raksturot…
Mecanismos epigenéticos en las células endometriales estromales durante el proceso de decidualización
2012
Durante el ciclo menstrual y bajo el control de las hormonas esteroideas el endometrio experimenta grandes cambios morfológicos y bioquímicos en preparación para la implantación embrionaria. Los principales eventos que tienen lugar son el establecimiento del estado receptivo seguido de un aumento en los niveles de progesterona que induce la decidualización de las células estromales endometriales. La decidualización es una transformación morfológica y funcional del compartimento endometrial estromal necesaria para el control del proceso de invasión embrionaria y la formación de la placenta y por lo tanto para el establecimiento del embarazo. Este proceso está muy bien caracterizado a nivel t…
Decidual endothelial cells express surface-bound C1q as a molecular bridge between endovascular trophoblast and decidual endothelium.
2008
This study was prompted by the observation that decidual endothelial cells (DECs), unlike endothelial cells (ECs) of blood vessels in normal skin, kidney glomeruli and brain, express surface-bound C1q in physiologic pregnancy. This finding was unexpected, because deposits of C1q are usually observed in pathologic conditions and are associated with complement activation. In the case of DECs, we failed to detect immunoglobulins and C4 co-localized with C1q on the cell surface. Surprisingly, DECs expressed mRNA for the three chains of C1q and secreted detectable level of this component in serum-free medium. The ability to synthesize C1q is acquired by DECs during pregnancy and is not shared by…