Immunohistochemical and ultrastructural study of the lamellae of oocytes in atretic follicles in relation to different processes of cell death

  • M.L. Escobar Universidad Nacional Autónoma de México, Mexico.
  • O.M. Echeverría Universidad Nacional Autónoma de México, Mexico.
  • G. García Universidad Nacional Autónoma de México, Mexico.
  • R. Ortíz Universidad Nacional Autónoma de México, Mexico.
  • G.H. Vázquez-Nin | vazqueznin@ciencias.unam.mx Universidad Nacional Autónoma de México, Mexico.

Abstract

Atresia is the process through which non-selectable oocytes are eliminated; it involves apoptosis and/or autophagy. This study used immunohistochemical and ultrastructural techniques to characterize the lamellae present in the cytoplasm of oocytes in follicles in the process of atresia in prepubertal and adult Wistar rats. The results indicate that the lamellae are positive to tubulin and myosin immunodetection under light and electron microscopy. Labeling is greater with anti-tubulin and lesser with anti-myosin. Our observations indicate that lamellae are present in oocytes at the initial antral stage in prepubertal rats; that is, from day 14 post-birth to adult age. We were able to determine that the increase in altered lamellae principally occurs in the apoptotic cells rather than in the autophagic cells.

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Author Biographies

M.L. Escobar, Universidad Nacional Autónoma de México
Laboratorio de Microscopía Electrónica, Departamento de Biología Celular, Facultad de Ciencias
O.M. Echeverría, Universidad Nacional Autónoma de México
Laboratorio de Microscopía Electrónica, Departamento de Biología Celular, Facultad de Ciencias
G. García, Universidad Nacional Autónoma de México
Laboratorio de Microscopía Electrónica, Departamento de Biología Celular, Facultad de Ciencias
R. Ortíz, Universidad Nacional Autónoma de México
Laboratorio de Microscopía Electrónica, Departamento de Biología Celular, Facultad de Ciencias
G.H. Vázquez-Nin, Universidad Nacional Autónoma de México

Laboratorio de Microscopía Electrónica, Departamento de Biología Celular, Facultad de Ciencias

Published
2015-08-12
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Section
Original Papers
Supporting Agencies
CONACyT
Keywords:
Atresia, apoptosis, autophagy, cytoskeleton, tubulin.
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How to Cite
Escobar, M., EcheverríaO., GarcíaG., OrtízR., & Vázquez-Nin, G. (2015). Immunohistochemical and ultrastructural study of the lamellae of oocytes in atretic follicles in relation to different processes of cell death. European Journal of Histochemistry, 59(3). https://doi.org/10.4081/ejh.2015.2535