Close relationships among the seven grey matters of the limbic system and basal ganglia with regard to the phosphorus content

Abstract

Introduction Our aim was to elucidate compositional changes of the brain with aging; we investigated the relationships among the seven grey matters belonging to the limbic system and basal ganglia with regard to their phosphorous content. Materials and methods After ordinary dissections were completed, the hippocampus, dentate gyrus, mammillary body, amygdala, caudate nucleus, putamen and globuspallidus of the grey matter, were removed from the identical brains of the subjects. The subjects consisted of 22 men and 23 women. After the brain samples were incinerated with nitric acid and perchloric acid, the phosphorous content was determined by inductively coupled plasma-atomic emission spectrometry. Results We found that there were extremely significant, direct correlations among the phosphorous contents of all the seven grey matters: the hippocampus, dentate gyrus, mammillary body, amygdala, caudate nucleus, putamen and globuspallidus. Conclusion It is reasonable to presume that the phosphorous content in the grey matter of the brain indicates the active cell density, i.e. the number of active cells per volume. Therefore, there is a possibility that the active cell densities correlate well and directly among all the seven grey matters of the hippocampus, dentate gyrus, mammillary body, amygdala, caudate nucleus, putamen and globuspallidus.

Evaluation of Sexual Dimorphism of Inter Condylo-Coronoid Process Distance by Panoramic Radiography in South Indian Population

“…Tohno et al in his study reported that the mandible of the condyle region is one of the sexual dimorphic regions and it can be used in forensic cases [40] and this is similar to our finding. In a study, conducted on sex determination by using mandible by morphometric and morphological analysis.…”

Element accumulation in the tracheal and bronchial cartilages of monkeys

“…The authors previously investigated age-related changes in elements by direct chemical analysis of the monkey cardiac walls [30], sinoatrial node [31], cardiac valves [32], tendon of the peroneus longus muscle [33], ligamentum capitis femoris [34], and various arteries [35][36][37][38][39][40] and found that the elements did not uniformly accumulate in various monkey tissues and organs with age. In the cardiac walls, sinoatrial nodes, cardiac valves, and coronary artery [35][36], the calcium content gradually decreased with development. Conversely, in most arteries [37][38][39][40] and the tendon of the peroneus longus muscle, the calcium content progressively increased with age.…”