Follicular Growth
Follicular Growth - Related Videos
06:40
Collection of Human Follicular Fluid, Follicle Somatic Cells, and Immature Oocytes from Individuals Undergoing In Vitro Fertilization
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2025
This protocol outlines standardized methods to isolate and process follicular fluid, somatic cells, and immature oocytes from IVF procedures, enabling high-quality molecular and cellular analyses. These approaches support translational research into fertility, reproductive aging, and ovarian dysfunction using materials typically discarded in clinical care.
07:24
Xenopus Oocytes: Optimized Methods for Microinjection, Removal of Follicular Cell Layers, and Fast Solution Changes in Electrophysiological Experiments
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Cited by 5 •
2016
Optimized procedures for the isolation of single follicles, cytoplasmic RNA microinjections, the removal of surrounding cell layers, and protein expression in Xenopus oocytes are described. In addition, a simple method for fast solution changes in electrophysiological experiments with ligand-gated ion channels is presented.
10:45
In Situ Visualization of Axon Growth and Growth Cone Dynamics in Acute Ex Vivo Embryonic Brain Slice Cultures
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Cited by 4 •
2021
This protocol demonstrates a straightforward and robust method to study in situ axon growth and growth cone dynamics. It describes how to prepare ex vivo physiologically relevant acute brain slices and provides a user-friendly analysis pipeline.
11:46
Axon Stretch Growth: The Mechanotransduction of Neuronal Growth
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Cited by 30 •
2011
A unique tissue engineering method was developed to elongate numerous nerve fibers in culture by recapitulating axon stretch growth; a form of nervous system growth whereby nerves elongate in conjunction with growth of the enlarging body.
11:35
Separation of Follicular Cells and Oocytes in Ovarian Follicles of Zebrafish
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Cited by 1 •
2021
Here, we present a simple method for separating follicular cells and oocytes in zebrafish ovarian follicles, which will facilitate investigations of ovarian development in zebrafish.
FAQs
After primordial follicle activation, granulosa cells proliferate, a theca layer forms, and the follicle enlarges. These changes represent a coordinated developmental progression rather than simple growth: support cells become increasingly involved in hormone production, while the enclosed oocyte gains developmental competence. Together, cellular organization and oocyte maturation provide important indicators of ovarian development.
Follicle-stimulating hormone becomes increasingly important as development proceeds, but it does not act alone. Local ovarian signals help regulate the follicle alongside endocrine input, influencing continued growth and cellular activity. This interaction matters because follicular development reflects both systemic hormonal regulation and signals generated within the ovary, rather than a single controlling factor.
Granulosa and theca cells provide the follicle’s endocrine support as development advances. Their coordinated activity produces hormones, including estrogen, while the enclosed oocyte undergoes changes associated with developmental competence. Examining these cellular contributions helps explain how a follicle can simultaneously support oocyte maturation and participate in the hormonal regulation of reproductive development.
Following the follicle across its developmental stages links cellular events to broader reproductive transitions. This framework supports examination of ovarian function, endocrine regulation, puberty, and reproductive aging, while also helping researchers consider developmental disorders. The topic therefore connects local changes in follicle and oocyte state with organism-level changes in reproductive development.
Its stages provide a biological framework for understanding how ovarian follicles support oocyte maturation and reproductive development. This knowledge is relevant to infertility treatments and assisted reproduction because it connects follicular enlargement, hormone production, and oocyte developmental competence. It also helps place reproductive outcomes within the broader context of ovarian function and endocrine regulation.
A study can organize observations by following primordial follicle activation, granulosa-cell proliferation, theca-layer formation, follicle enlargement, increasing dependence on follicle-stimulating hormone, hormone production, and oocyte developmental competence. This sequence creates a developmental framework for relating cellular and endocrine changes to ovarian function, reproductive development, fertility-related conditions, and reproductive aging.