Re-evaluation and quantification of the different sources of nerve fibres supplying the rat eye
| العنوان: | Re-evaluation and quantification of the different sources of nerve fibres supplying the rat eye |
|---|---|
| المؤلفون: | Paolo Sagnelli, Nicola Pescosolido, Carlo Cavallotti, Alessandro Frati |
| بيانات النشر: | Blackwell Science Inc, 2005. |
| سنة النشر: | 2005 |
| مصطلحات موضوعية: | Male, Superior cervical ganglion, Histology, Sensory Receptor Cells, medicine.medical_treatment, ciliary ganglion, eye, nerve fibres, nerve section, nervous ganglia removal, ocular peripheral ganglia, parasympathectomy, rat eye, sympathectomy, Superior Cervical Ganglion, Eye, Rats, Sprague-Dawley, Trigeminal ganglion, Nerve Fibers, Parasympathectomy, Medicine, Animals, Ganglionectomy, Oxidopamine, Molecular Biology, Ecology, Evolution, Behavior and Systematics, Denervation, Staining and Labeling, business.industry, Sympathectomy, Chemical, Ciliary ganglion, Cell Biology, Anatomy, Original Articles, Parasympathetic Fibers, Postganglionic, Rats, medicine.anatomical_structure, Sympathectomy, Cholinergic Fibers, Trigeminal Ganglion, Peripheral nervous system, Pterygopalatine ganglion, sense organs, business, Adrenergic Fibers, Developmental Biology |
| الوصف: | The denervation and/or the removal of peripheral nerve ganglia are useful surgical techniques for studying the source and distribution of peripheral nerves in all organs, including the eye. The amount and distribution of the remaining nerve fibres supplying the eye (after sectioning of various types of nervous fibres and/or removal of nerve ganglia) were evaluated in the rat. Male Sprague-Dawley rats were anaesthetized and one or more of the following nervous tissues were removed: superior cervical ganglion, main ciliary ganglion, pterygopalatine ganglion, trigeminal ganglion and the ophthalmic-maxillary nerve. In some animals, chemical sympathectomy was performed by administration of 6-OH dopamine. The eyes were cut in serial sections, but only three regions (cornea, iris and choroid) were harvested and submitted for various nerve fibre staining techniques. The results were quantified and statistically analysed. Superior cervical ganglionectomy and/or chemical sympathectomy induced the destruction of almost all the catecholaminergic nerve fibres in the three examined regions of the rat eye. Removal of the ciliary ganglion (partial parasympathectomy) caused the destruction of about 60% of the cholinergic nerve fibres of the same regions of the rat eye, while subtotal parasympathectomy destroyed about 80% of the cholinergic nerve fibres. Surgical transsection of the ophthalmo-maxillary nerve or the removal of the trigeminal ganglion led to a degeneration of almost all sensitive nerve fibres of the three examined regions of the rat eye. The denervation experiments confirmed the presence of the different types of nerve fibres (sympathetic, parasympathetic and sensitive) in the three studied structures of the rat eye. |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b607aa90058def91a42cefb19737cf4b https://europepmc.org/articles/PMC1571470/ |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....b607aa90058def91a42cefb19737cf4b |
| قاعدة البيانات: | OpenAIRE |
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The amount and distribution of the remaining nerve fibres supplying the eye (after sectioning of various types of nervous fibres and/or removal of nerve ganglia) were evaluated in the rat. Male Sprague-Dawley rats were anaesthetized and one or more of the following nervous tissues were removed: superior cervical ganglion, main ciliary ganglion, pterygopalatine ganglion, trigeminal ganglion and the ophthalmic-maxillary nerve. In some animals, chemical sympathectomy was performed by administration of 6-OH dopamine. The eyes were cut in serial sections, but only three regions (cornea, iris and choroid) were harvested and submitted for various nerve fibre staining techniques. The results were quantified and statistically analysed. Superior cervical ganglionectomy and/or chemical sympathectomy induced the destruction of almost all the catecholaminergic nerve fibres in the three examined regions of the rat eye. 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