𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Immunocytochemical and electron microscope observations on astroglial interlaminar processes in the primate neocortex

✍ Scribed by Jorge A. Colombo; Silvina Gayol; Alberto Yáñez; Pilar Marco

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
597 KB
Volume
48
Category
Article
ISSN
0360-4012

No coin nor oath required. For personal study only.

✦ Synopsis

At variance with the rat, previous observations disclosed the presence of long interlaminar astroglial processes in the cerebral cortex of adult nonhuman primates. To examine its presence in human cerebral cortex, samples of frontal and temporal cerebral cortices were obtained during programmed brain surgery from a young patient with an intraventricular astrocytoma, and from one young and two adult patients with frontal and temporal lobe focal epilepsy, respectively. Samples of the visual cortex were also obtained at an autopsy of an 84-year-old woman without any known neurological disease. Brain tissues were processed for GFAP-IR immunocytochemistry. Long, interlaminar, GFAP-IR astroglial processes of usually 300-500 microm, but occasionally reaching almost 1,000 microm, were observed. These processes resembled those previously described in the cerebral cortex of adult New World monkeys. Available data suggest that they may represent a predominant characteristic in postnatal primate cerebral cortex. EM analysis of club-like endings disclosed a multilamellar organization of GFAP-IR intermediate filaments, and the presence of mitochondria and amorphous, electron dense material. Their possible function is yet to be determined.

📜 SIMILAR VOLUMES

Electron microscopic observations on the
Electron microscopic observations on the process of polar body formation in artificially activated eggs of the rose bitterling
✍ Ohta, Tadayuki 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 English ⚖ 949 KB

Mature eggs were obtained from adult female rose bitterling, Rhodeus ocellatus ocellatus. Both intact and dechorionated eggs were activated by immersion in freshwater. The formation of the second polar body after egg activation was examined ultrastructurally by both scanning and transmission electro

Observations on the cortical reaction in
Observations on the cortical reaction in eggs ofBrachydanio rerio as seen with the scanning electron microscope
✍ Hart, Nathan H. ;Yu, Sui-Foh ;Greenhut, Victor A. 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 English ⚖ 532 KB

## Abstract Ripe eggs of __Brachydanio rerio__ were fixed at selected intervals of time after activation, dechorionated, and prepared by standard techniques for viewing under the scanning electron microscope (SEM). The surfaces of eggs fixed two to four minutes after activation show all stages in t

Adrenergic and cholinergic nerve termina
Adrenergic and cholinergic nerve terminals in the rat parotid gland. Electron microscopic observations on permanganate-fixed glands
✍ Hand, Arthur R. 📂 Article 📅 1972 🏛 John Wiley and Sons 🌐 English ⚖ 986 KB

The innervation of the acinar cells of the rat parotid gland was studied using potassium permanganate fixation. Adrenergic terminals, characterized by the presence of small granular vesicles, and cholinergic terminals, containing small agranular vesicles, made close contact with the acinar cells. Bo

Electron microscopic observations on the
Electron microscopic observations on the accumulation of large granular lymphocytes (pit cells) and kupffer cells in the liver of rats treated with continuous infusion of interleukin-2
✍ Dr. Luc Bouwens; Andreas Marinelli; Peter J. K. Kuppen; Alex M. M. Eggermont; Co 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 747 KB

Treatment schedules were investigated for in vivo induction of lymphokine-activated killer cells in the rat liver. Treatment of rats with continuous sys- temic or regional infusion of recombinant human interleukin-2 with a dose of 4 to 8 x lo4 U/day during 7 days, resulted in an increase in number o