The development of medial geniculate body in man: changes in the cholinesterase (CHE) activity during fetal and perinatal life.

Abstract:

:In the present study cholinesterase histochemical (ChE) techniques have been used to demonstrate differentiation and maturation of the medial geniculate body (MGB) in the human fetuses (ranging between 10.5 to 28 weeks) and infants (premature and three postnatal months). In the youngest specimens examined (10.5 to 15 weeks) moderate ChE activity was found in the neuropil of MGB. In the next developmental stage ChE activity is significantly increased with stronger reactivity in the peripheral part of MGB. In the fetuses between 22 to 26 weeks of gestation peak ChE reactivity was observed in MGB. Reactivity is strong and homogeneous. In the premature infant (28 weeks and older) ChE reactivity becomes inhomogeneous and irregular with appearance of ChE positive bands in the moderately stained MGB matrix. In addition, strongly ChE reactive cell bodies can be discerned. In 3-month-old infant brain we have found significant decrease of ChE reactivity in the neuropil of the MGB. In conclusion we can say that MGB shows very strong, transient ChE reactivity during second half of gestation. Since a great majority of ChE reactivity disappears during later postnatal development, it is very likely that strong fetal activity is related to the histogenetic events and maturation of MGB.

journal_name

Acta Otolaryngol

journal_title

Acta oto-laryngologica

authors

Krmpotić-Nemanić J,Kostović I,Nemanić D

doi

10.3109/00016488309139464

subject

Has Abstract

pub_date

1983-05-01 00:00:00

pages

695-9

issue

5-6

eissn

0001-6489

issn

1651-2251

journal_volume

95

pub_type

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