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Results for “Karyometry”

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PubMed1985

Effects of gonadectomy on the karyometric development of the ventromedial nucleus of the hypothalamus in the mouse.

We studied the karyometric development of 3 subdivisions (ventral, central and dorsal) of the ventromedial nucleus in male albino mice from the 5th to the 190th day of life. All subdivisions exhibited a similar development pattern. Another group of animals were castrated at the 20th day of life and examined from the 25th to the 85th day. The increase of the nuclear size at the 35th day and the decrease at the 85th day, observed in the control group, were not present after castration.

Animals↗
PubMed1986

Effects of hypothyroidism on the karyometric development of the paraventricular and ventromedial nuclei of the hypothalamus in the mouse.

We studied the karyometric development of 4 subdivisions of the paraventricular nucleus (rostral, caudal, medial and lateral) and 3 subdivisions of the ventromedial nucleus of the hypothalamus (ventral, central and dorsal) in a hypothyroid group of male albino mice treated with propylthiouracil with or without interruption of the treatment at the 35th postnatal day. Hypothyroidism produces an increase of the nuclear-size values of the paraventricular and ventromedial nuclei, and the continued treatment increases this effect. The caudal and the rostral subdivisions of the paraventricular nucleus show more significant changes of their nuclear sizes compared to the medial and lateral subdivisions. The ventromedial nucleus responds similarly to hypothyroidism in all its subdivisions.

Animals↗
PubMed1989

Elliptic fourier analysis of cell and nuclear shapes.

The elliptic Fourier analysis (EFA) is proposed to characterize the cell and nuclear shape. The principal feature of this method is that it decomposes shapes with a closed contour into subshapes each of which maintains a closed contour. A set of homogeneous, nonredundant descriptors, independent of the contour rotation and translation, is computed from the elliptic Fourier coefficients. These descriptors also account for the contour size and resolution. The paired analysis of the cell and nuclear shape provides an exhaustive and accurate definition of the nucleoplasmic configuration.

Computer Simulation↗