An ultrastructural study of the fibromuscular capsule of the corpus luteum in mice

P. M. Motta, E. Vizza, S. Correr, G. Macchiarelli, G. Familiari, U. Muglia

Research output: Contribution to journalArticle

Abstract

The presence and distribution of contractile cells in mature corpora lutea (CL) of pregnant and normal cycling mice were studied by transmission (TEM) and scanning (SEM) electron microscopy. In the connective tissue surrounding the CL. SEM observations made after maceration in alkali, revealed long, flat, spindle-shaped elements arranged parallel to each other, forming a continuous capsule. TEM of these elements revealed ultrastructural features of mature smooth muscle cells (SMC), as well as structures intermediate between fibroblasts, fibrocytes and SMC. Discrete bundles of SMC were seen to exit the external capsule of the CL and to penetrate the luteal tissue. The extensive branches of these bundles of SMC appeared to make contact with numerous vessels. Therefore, three-dimensional reconstruction, based on TEM and SEM analysis, revealed that the SMC of the CL were organized such that they form a wide fibromuscular skeleton around and within the luteal mass. It is possible that pulsatile or tonic contraction of this structure may help to regulate the secretory activity of the luteal tissue by modifying the pressure inside the CL.

Original languageEnglish
Pages (from-to)247-254
Number of pages8
JournalCells Tissues Organs
Volume149
Issue number4
DOIs
Publication statusPublished - 1994

Fingerprint

Corpus Luteum
Capsules
Smooth Muscle Myocytes
Alkalies
Skeleton
Connective Tissue
Electron Scanning Microscopy
Muscle Cells
Fibroblasts
Pressure

Keywords

  • Corpus luteum
  • Mouse
  • Smooth muscle cells
  • Ultrastructure

ASJC Scopus subject areas

  • Anatomy
  • Histology

Cite this

Motta, P. M., Vizza, E., Correr, S., Macchiarelli, G., Familiari, G., & Muglia, U. (1994). An ultrastructural study of the fibromuscular capsule of the corpus luteum in mice. Cells Tissues Organs, 149(4), 247-254. https://doi.org/10.1159/000147585

An ultrastructural study of the fibromuscular capsule of the corpus luteum in mice. / Motta, P. M.; Vizza, E.; Correr, S.; Macchiarelli, G.; Familiari, G.; Muglia, U.

In: Cells Tissues Organs, Vol. 149, No. 4, 1994, p. 247-254.

Research output: Contribution to journalArticle

Motta, PM, Vizza, E, Correr, S, Macchiarelli, G, Familiari, G & Muglia, U 1994, 'An ultrastructural study of the fibromuscular capsule of the corpus luteum in mice', Cells Tissues Organs, vol. 149, no. 4, pp. 247-254. https://doi.org/10.1159/000147585
Motta, P. M. ; Vizza, E. ; Correr, S. ; Macchiarelli, G. ; Familiari, G. ; Muglia, U. / An ultrastructural study of the fibromuscular capsule of the corpus luteum in mice. In: Cells Tissues Organs. 1994 ; Vol. 149, No. 4. pp. 247-254.
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