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Anastrozole promotes implantation by altering the expression of paxillin and fak in rat luminal uterine epithelium / El anastrozol promueve la implantación alterando la expresión de paxilina y fak en el epitelio uterino luminal de rata
Mwakikunga, Anthony; Adefolaju, Gbenga A; Schepartz, Lynne; Hosie, Margot J.
  • Mwakikunga, Anthony; University of the Witwatersrand. Medical School. School of Anatomical Sciences. Johannesburg. ZA
  • Adefolaju, Gbenga A; University of Limpopo. School of Health Care Sciences. Department of Pre-Clinical Sciences. ZA
  • Schepartz, Lynne; University of the Witwatersrand. Medical School. School of Anatomical Sciences. Johannesburg. ZA
  • Hosie, Margot J; University of the Witwatersrand. Medical School. School of Anatomical Sciences. Johannesburg. ZA
Int. j. morphol ; 38(1): 165-175, Feb. 2020. tab, graf
Article in English | LILACS | ID: biblio-1056416
ABSTRACT
An alternative hyper-ovulator inducer to replace clomiphene citrate (CC) is needed as it is unsuitable for women with polycystic ovarian syndrome and is associated with low pregnancy rates. Anastrozole is an effective hyper-ovulator inducer, but has not been well researched. In order to determine the effectiveness of anastrozole as a hyper-ovulator inducer and to an extent compare it with CC in similar situations, this study ascertained the effects of these drugs on the expression of the focal adhesion proteins, paxillin and FAK, which are uterine receptivity markers in the surface luminal uterine epithelial cells of day 1 and day 6 pregnant Wistar rats. The results show that paxillin is localized in focal adhesions at the base of the uterine epithelial cells at day 1 of pregnancy whereas at day 6, paxillin disassembles from the basal focal adhesions and localizes and increases its expression apically. FAK is faintly expressed at the basal aspect of the uterine epithelial cells while moderately expressed at the cell-to-cell contact at day 1 in all groups from where it disassembles and relocates apically and becomes more intensely expressed at day 6 of pregnancy in untreated and anastrozole treated rats. Although paxillin is localized apically at day 6, its expression is significantly down-regulated with CC treatment suggesting its interference with the implantation process. These findings seem to suggest that anastrozole could favor implantation.
RESUMEN
Para reemplazar el citrato de clomifeno (CC) es necesario un inductor de hiperovulación alternativo, ya que no es adecuado para mujeres con síndrome de ovario poliquístico y está asociado con tasas bajas de embarazo. El anastrozol es un inductor eficaz del hiper-ovulador, pero no se ha investigado adecuadamente. Con el fin de determinar la efectividad del anastrozol como inductor del hiper-ovulador y, en cierta medida, compararlo con CC en situaciones similares, este estudio determinó los efectos de estos fármacos en la expresión de las proteínas de adhesión focal, paxillin y FAK, uterinas marcadores de receptividad en la superficie luminal de células uterinas epiteliales, del día 1 y día 6 en ratas Wistar preñadas. Los resultados muestran que la paxilina se localiza en adherencias focales en la base de las células epiteliales uterinas en el día 1 del embarazo, mientras que en el día 6, la paxilina se desmonta de las adherencias focales basales y localiza y aumenta su expresión apicalmente. FAK se expresa débilmente en el aspecto basal de las células epiteliales uterinas, mientras que se expresa moderadamente en el contacto de célula a célula en el día 1 en todos los grupos, donde se separa y se reubica apicalmente y se expresa con mayor intensidad el día 6 de la preñez, en pacientes no tratados y tratados. ratas tratadas con anastrozol. Aunque la paxillina se localiza apicalmente en el día 6, su expresión está significativamente disminuida con el tratamiento con CC, lo que sugiere su interferencia con el proceso de implantación. Estos hallazgos sugieren que el anastrozol podría favorecer el proceso de implantación.
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Full text: Available Index: LILACS (Americas) Main subject: Uterus / Anastrozole Limits: Animals Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2020 Type: Article Affiliation country: South Africa Institution/Affiliation country: University of Limpopo/ZA / University of the Witwatersrand/ZA

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Full text: Available Index: LILACS (Americas) Main subject: Uterus / Anastrozole Limits: Animals Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2020 Type: Article Affiliation country: South Africa Institution/Affiliation country: University of Limpopo/ZA / University of the Witwatersrand/ZA