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Connections between the lacrimal gland and sensory trigeminal neurons: a WGA/HRP study in the cynomolgous monkey
Author(s) -
Baljet Bob,
VanderWerf Frans
Publication year - 2005
Publication title -
journal of anatomy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.932
H-Index - 118
eISSN - 1469-7580
pISSN - 0021-8782
DOI - 10.1111/j.1469-7580.2005.00374.x
Subject(s) - sensory system , wheat germ agglutinin , trigeminal ganglion , anatomy , lacrimal gland , horseradish peroxidase , axoplasmic transport , trigeminal nerve , lacrimal apparatus , biology , chemistry , neuroscience , medicine , pathology , microbiology and biotechnology , lectin , biochemistry , enzyme
The sensory innervation of the lacrimal gland (LG) in the cynomolgous monkey was studied using the retrograde wheat germ agglutinin/horsereadish peroxidase (WGA/HRP) tracer technique. A small solidified piece of WGA/HRP was implanted in the LG. Labelled sensory first‐order neurons were found in the ipsilateral trigeminal ganglion (TG) and in the ipsilateral mesencephalic trigeminal nucleus (MTN). The distribution of labelled TG neurons was restricted to ophthalmic and maxillary ganglionic parts. Sensory innervation of LG by primary afferents is not only restricted to TG; an MTN involvement has also been found. This may imply that there is a central sensory role in the production and release of tears.