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Circumventricular organs of rats that experimental hydrocephalus and subarachnoidal hemorrhage carried out: an anaglyphic SEM study

Author(s): Tatar I | Akpinar G | Acikgoz B | Tunali S | Aldur MM | Celik HH | Kapakin S | Surucu HS

Journal: Neuroanatomy
ISSN 1303-1783

Volume: 3;
Issue: 1;
Start page: 35;
Date: 2004;
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Keywords: anatomy | neuroanatomy | circumventricular | anaglyph | sem | hydrocephalus | subarachnoidal | hemorrhage | microscopy

It is known that circumventricular organs that are located around the ventricular system ofthe brain are lack of blood-brain barrier and support the body water-salt balance. They alsoeffect many physiological events such as some neuroendocrine and reproduction mechanisms.In different pathological conditions their results and the step in which the circumventricularorgans are affected are unknown. Although circumventricular organs do not have a bloodbrainbarrier, they do not completely show the same characteristics.In pathological conditions they show their own effects by means of mediators. It is necessaryto research their structural changes, also the changes in the neurotransmitters that areaffected by circumventricular organs.Hydrocephalus was induced in rats by injecting kaolin into the subarachnoidal space at thecranial convexity. Subarachnoidal hemorrhage was realized with a puncture of the basilarartery through transclival route. We took and studied images using a JEOL SEM ASID-10(Japan) electron microscope. We examined slices of subfornical organ, organum vasculosum,lamina terminalis, area postrema and median eminence.The purpose of this study is to view three-dimensional scanning electron microscopicimages of the circumventricular organs using the anaglyph technique that records images asstereopairs (converted as a red-blue images and viewed with special glasses).
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