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Investigation of FAS and IL-6 expression in placentas with HELLP syndrome / Investigación de la expresión de FAS e IL-6 en placentas con síndrome de HELLP
Otçu, Serap; Atiç, Esra Nur; Yavuz, Dilek.
  • Otçu, Serap; Health Sciences University. Department of Obstetrics and Gynecology. Diyarbakir. TR
  • Atiç, Esra Nur; Dicle University. Medical School. Department of Histology and Embryology. Diyarbakir. TR
  • Yavuz, Dilek; Health Sciences University. Department of Obstetrics and Gynecology. Diyarbakir. TR
Int. j. morphol ; 40(5): 1228-1235, 2022. ilus, tab, graf
Article in English | LILACS | ID: biblio-1405276
ABSTRACT

SUMMARY:

The aim of our study was to investigate the effect of inflammation in the placenta on the pro-apoptotic development after severe preeclampsia. Placenta tissue samples of 15 HELLP syndrome and 15 healthy 35-38th week-pregnant women were involved in the study. Tissue samples were taken only from the maternal side of the placenta and fixed in 10 % formaldehyde, then blocked in paraffin wax and 4-6 mm-thick sections were cut and stained with Harris Hematoxylene-Eosin. Antigen retrieval was performed for sections, incubated with FAS antibody and anti-IL-6 antibody. After the application of streptavidin peroxidase followed by AEC chromogen solution, sections were counterstained with Harris hematoxylin. Significant thickening of the fibrinoid layer, degeneration and apoptotic change in decidua cells, marked increase in the hyalinized area, degenerative changes in the syncytial regions of the chorionic villus and an increase in syncytial nodes and bridges and IL- expression were observed as positive. FAS expression was positive in the pycnotic nuclei of decidual cells in the maternal region and in the syncytial regions. It was observed that the proapoptotic process increased as a result of severe preeclampsia. It was concluded that the control of cytokine activity and reduction of pro-apoptotic signal during the inflammation process will slow down the development of HELLP syndrome.
RESUMEN
RESUMEN El objetivo de nuestro estudio fue investigar el efecto de la inflamación en la placenta sobre el desarrollo proapoptótico después de la preeclampsia severa. Se recogieron muestras de tejido de placenta de 15 mujeres con síndrome de HELLP y 15 mujeres sanas con un embarazo de 35 a 38 semanas. Se tomaron muestras de tejido solo del lado materno de la placenta y se fijaron en formaldehído al 10 %, luego se bloquearon en parafina y se cortaron secciones de 4-6 mm de espesor y se tiñeron con hematoxilena-eosina de Harris. La recuperación del antígeno se realizó para secciones, incubadas con anticuerpo FAS y anticuerpo anti-IL-6. Después de la aplicación de estreptavidina peroxidasa seguida de solución de cromógeno AEC, las secciones se contrastaron con hematoxilina de Harris. Se observó como positivo un engrosamiento significativo de la capa fibrinoide, degeneración y cambio apoptótico en las células de la decidua, aumento marcado en el área hialinizada, cambios degenerativos en las regiones sincitiales de la vellosidad coriónica y un aumento en los nódulos y puentes sincitiales y la expresión de IL-6. La expresión de FAS fue positiva en los núcleos picnóticos de las células deciduales en la región materna y en las regiones sincitiales. Se observó que el proceso proapoptótico se incrementó como consecuencia de la preeclampsia severa. Se concluyó que el control de la actividad de las citocinas y la reducción de la señal proapoptótica durante el proceso de inflamación ralentizarán el desarrollo del síndrome de HELLP.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Placenta / Interleukin-6 / HELLP Syndrome / Fas Receptor Limits: Adult / Female / Humans / Pregnancy Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2022 Type: Article Affiliation country: Turkey Institution/Affiliation country: Dicle University/TR / Health Sciences University/TR

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Full text: Available Index: LILACS (Americas) Main subject: Placenta / Interleukin-6 / HELLP Syndrome / Fas Receptor Limits: Adult / Female / Humans / Pregnancy Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2022 Type: Article Affiliation country: Turkey Institution/Affiliation country: Dicle University/TR / Health Sciences University/TR