SPECIFIC CIRCULAR ORGANIZATION OF THE NEURONS OF HUMAN INTERTHALAMIC ADHESION AND OF PERIVENTRICULAR THALAMIC REGION

SPECIFIC CIRCULAR ORGANIZATION OF THE NEURONS OF HUMAN INTERTHALAMIC ADHESION AND OF PERIVENTRICULAR THALAMIC REGION

Interthalamic adhesion between the medial surfaces of the left and right thalamus is a variable structure and contains the midline thalamic nuclei, which are not much developed in humans. The research has been done on 6 human brains obtained during routine autopsy (age 45 to 65; 4 male and 2 female)...

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Published in:International journal of neuroscience Vol. 115; no. 5; pp. 669 - 679
Main Authors: LASLO, PU KA, SLOBODAN, MALOBABI, NELA, PU KA, MILO, MALI, RADE, POPOVI, TATJANA, ILLE
Format: Journal Article
Language:English
Published: London Informa UK Ltd 01-05-2005
Taylor & Francis
Subjects:
Aged
Anatomy
Biological and medical sciences
Central nervous system
Diencephalon - ultrastructure
Female
Fundamental and applied biological sciences. Psychology
Humans
interthalamic adhesion
Male
man
Middle Aged
midline nuclei
Midline Thalamic Nuclei - ultrastructure
Neural Conduction - physiology
neuronal organization
Neurons - ultrastructure
periventricular thalamus
Vertebrates: nervous system and sense organs
Human
neuronal organization
Central nervous system
Anatomy
Adhesion
Encephalon
Neuron
Morphology
Thalamus
periventricular thalamus
interthalamic adhesion
man
midline nuclei
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Summary:Interthalamic adhesion between the medial surfaces of the left and right thalamus is a variable structure and contains the midline thalamic nuclei, which are not much developed in humans. The research has been done on 6 human brains obtained during routine autopsy (age 45 to 65; 4 male and 2 female). Every tenth 10 μm thick frontal section was stained according to Klüver-Barrera method. In all cases the authors found a specific organization of certain groups of neurons within the interthalamic adhesion (IA) in form of circles on frontal sections. These circular groups were present on all sections but only 1-2 in each. The larger mean diameter of these circular arrangements was R = 229.4 μm, and smaller was r = 203.1 μm. These circular groups within the human IA were formed in average by 7.29 neurons. In periventricular region (PVR) of thalamus similar circular groups of neurons also were present in all cases as in IA. These neuronal groups in PVR were of smaller size than in the IA, with larger mean diameter R = 201.4, smaller mean diameter r = 181.2 μm and they contained fewer neurons, 6.69 on average. All three values (both diameters of circular arrangements, and number of neurons forming them) were significantly smaller in PVR (p < .01). Morphological types and sizes of neurons in both investigated structures (IA and PV) were not different. The circular neuronal groups in IA were formed in 61% of fusiform neurons and in PVR in 48% of fusiform neurons. According to their subependymal localization, size and form, these circular groups can represent in vivo correlates of neurospheres.
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ISSN:0020-7454
1563-5279
1543-5245
DOI:10.1080/00207450590524340