Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Variations in mitochondrial size and ultrastructure during germ cell development

B S Weakley

    Cell and Tissue Research
    |July 6, 1976
    PubMed
    Summary

    Mitochondrial morphology in female hamster germ cells changes significantly during oogenesis, from elongated in oogonia to rounded during later stages. These ultrastructural dynamics are linked to key developmental events in oocyte maturation.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Unusual arrangements of endoplasmic reticulum in large oocytes of the golden hamster.

    Acta anatomica·1986
    Same author

    Paired cisternae of endoplasmic reticulum in developing ovarian oocytes of the golden hamster.

    Acta anatomica·1986
    Same author

    Changing patterns of cerium reactivity in developing ovarian oocytes of the hamster.

    Acta anatomica·1985
    Same author

    Enzyme studies on TPPase-reactive cytoplasmic structures observed in early meiotic prophase I of the hamster oocyte.

    Cell and tissue research·1984
    Same author

    Intake of phosphatase-active plasma membrane into the cytoplasm of oocytes from sexually immature hamsters.

    Journal of cell science·1982
    Same author

    Differentiation of endoplasmic reticulum in the developing oocyte of the golden hamster (Mesocricetus auratus).

    Cell and tissue research·1982

    Area of Science:

    • Cell Biology
    • Developmental Biology
    • Reproductive Biology

    Background:

    • Mitochondria are crucial organelles involved in cellular energy production and are known to undergo dynamic changes during development.
    • Oogenesis, the process of female germ cell development, involves complex morphological and functional transformations of the oocyte and its surrounding cells.

    Purpose of the Study:

    • To investigate the size variations and ultrastructural alterations of mitochondria in developing female hamster germ cells.
    • To correlate these mitochondrial morphological changes with specific stages of oogenesis.

    Main Methods:

    • Analysis of mitochondrial size and ultrastructure in hamster germ cells at various developmental stages.
    • Electron microscopy was used to observe mitochondrial morphology, including shape, cristae, and matrix density.

    Main Results:

    • Mitochondria were elongated with transverse cristae in fetal and newborn oogonia.
    • During meiotic prophase, mitochondria became small, rounded, and electron-dense with pleomorphic cristae, with partial reversal upon dictyate.
    • Maximum mitochondrial size and cristae complexity occurred at the onset of rapid oocyte growth, followed by a decline and changes in shape and density correlated with follicular development.

    Conclusions:

    • Mitochondrial morphology undergoes significant, stage-specific changes throughout female hamster oogenesis.
    • These dynamic ultrastructural alterations in mitochondria are closely associated with critical events in oocyte development and maturation.

    Related Experiment Videos