pyknosis


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Related to pyknosis: karyolysis, karyorrhexis

pyknosis

(pɪkˈnəʊsɪs)
n
a variant spelling of pycnosis
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pyknosis - a degenerative state of the cell nucleus
disease - an impairment of health or a condition of abnormal functioning
Translations
References in periodicals archive ?
The other type of degeneration was characterized by shrinkage and pyknosis of the oocyte and granulosa cells, detachment of the follicle from the surrounding stroma, cytoplasmic retraction and numerous cytoplasmic vacuoles.
Hippocampal CA1 neurons in I/R group exhibited pyknosis and anachromasis of nucleus as well as shrunken cell bodies.
The interspersed small dark cells indicating pyknosis of the tumor cells could form rosette-like structures.
Histopathological findings:-the portal vein and accompanied with nuclear pyknosis as shown in (photo, 10).
Nucleolar damage of photoreceptors that occurred after exposure include an early stage of nucleolar condensation (Figure 6B), karyolysis (Figure 6C), pyknosis (Figure 6D-E), and karyorrhexis (Figure 6F).
Neuronal changes consist of nuclear pyknosis and enhanced cytoplasmic eosinophilia, which are most readily seen in the dentate nucleus of the cerebellum (Figure 7, B), the Purkinje cells, Ammons horn of the hippocampus, and the nuclei of the pons and midbrain.
The apoptotic features noted included, chromatin condensation (white arrows-Figure 3), nuclear pyknosis (white arrowheads-Figure 3) and nuclear fragmentation (bottom panels-Figure 3).
These inclusions were sometimes associated with nuclear pyknosis and karyorrhexis, but again no etiological agent was detected.
18,25) Oligodendrocyte pyknosis and apoptosis, features observed in Pattern 3 pathology, (21) are present in evolving lesions derived from patients whose brains are examined shortly after or during an exacerbation of MS.