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Related Experiment Videos

Innervation of trabecular meshwork.

A Sugita, H Nishida, H Yoshioka

    Japanese Journal of Ophthalmology
    |January 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    Monkey eye trabecular meshwork innervation was examined. Adrenergic nerve terminals were identified, with types II and III potentially regulating intraocular pressure via aqueous humor outflow.

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    Area of Science:

    • Ophthalmology
    • Neuroscience
    • Microscopy

    Background:

    • The trabecular meshwork (TM) is crucial for regulating intraocular pressure (IOP).
    • Innervation of the TM plays a role in ocular physiology, but its precise nature is not fully understood.

    Purpose of the Study:

    • To investigate the innervation of the monkey eye's anterior chamber angle TM.
    • To characterize the types and distribution of nerve terminals within the TM.

    Main Methods:

    • Transmission electron microscopy (TEM) was used to examine TM innervation.
    • Scanning electron microscopy (SEM) provided complementary structural details.
    • 5-hydroxydopamine treatment aided in identifying adrenergic nerve terminals.

    Main Results:

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    • Adrenergic nerve terminals were identified in the TM, characterized by dense-core vesicles.
    • Three types of nerve terminal endings (I, II, III) were classified based on their relationship with TM endothelial cells.
    • Type II and III terminals were more prevalent than Type I, with Type II being the most common.

    Conclusions:

    • The study identified and classified adrenergic nerve terminals within the monkey TM.
    • Type II and III nerve terminals, releasing transmitters into the aqueous humor, may influence aqueous outflow and IOP regulation.