Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 2

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  pola CA1-CA4 hipokampa
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
The aim of the study was a quantitative and cytoarchitectonic examination of neurons of the ventral hippocampal CA1-CA4 fields in somatically mature female American mink (Neovison vison) (N = 6). Brains were removed and examined under a light microscope. The samples were stained by Nissl’s standard method, and histological samples were used for morphometric analysis. All ventral hippocampal CA1-CA4 fields were analyzed cytoarchitectonically and morphometrically with a calibrated image analysis system that consisted of a computer equipped with the Cell^D software Soft Imaging System (SIS) with an integrated digital camera Colorview IIIu (Soft Imaging System). Morphometric investigations of the pyramidal layer showed that the cells of the hippocampal CA1-CA4 fields in adult female American mink differ in size, shape, cell area, nucleus area and the nucleus-to-cell ratio (in%). The cells of the CA2 field were densely arranged, pyramidal and contained a small amount of cytoplasm; their size was differentiated. They were the largest in size (15.06 μm) and diameter (14.5 μm). The cells of the CA1 field had the smallest size (8.5 μm) and diameter (8.6 μm). In the CA3 field, small, densely packed neurons dominated, whereas neurons in the CA4 field formed a thin strand of loosely arranged cells. Given the increasing interest in hippocampal areas, it is necessary to continue studies of their morphology and morphometry in healthy animals and in those suffering from neurodegenerative diseases.
The aim of the study was a morphometric analysis of the ventral hippocampal neurons of the individual CA1-CA4 fields in domestic cattle (Bos taurus; N = 6). The hippocampus in cattle is formed by a sizable arched invagination of the medial wall of the lateral ventricle of the brain. The brains were removed and analyzed conventionally with a light microscope. The samples were stained by Nissl’s method. The morphometric analysis of the neurons of the hippocampal CA1-CA4 fields included the following parameters: the area of nervous cells and the area of the cell nucleus in μm²; the nucleus-to-cell ratio in %; the average diameter and perimeter of the nervous cell in μm. The morphometric investigations indicate that the cells of the pyramidal layer in the CA1-CA4 fields of the hippocampus in adult domestic cattle differ in terms of their size, shape, and surface area, as well as the surface area of the cell nucleus. The size of cells in CA1 was the largest, fluctuating around 22 μm, whereas in CA4 it amounted to about 19 μm. Cells in CA1 and CA2 had the largest diameter of about 24 µm, whereas cells in the CA4 field had the smallest diameter of about 20 µm. The results obtained suggest a novel approach to studying the morphometric properties of the hippocampus in domestic cattle. Morphometric studies of the central nervous system (CNS) are regarded as a valuable source of data on the function of environmental and pharmacological factors and their effects on several structures of the CNS.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.