Medical

pyknosis

Also found in: Dictionary, Encyclopedia, Wikipedia.

pyknosis

 [pik-no´sis]
a thickening, especially the degeneration of a cell in which the nucleus shrinks in size and the chromatin condenses to a solid, structureless mass or masses. adj., adj pyknot´ic.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

pyk·no·sis

(pik-nō'sis),
A thickening or condensation; specifically, a condensation and reduction in size of the cell or its nucleus, usually associated with hyperchromatosis; nuclear pyknosis is a stage of necrosis.
[pykno- + G. -osis, condition]
Farlex Partner Medical Dictionary © Farlex 2012

pyk·no·sis

(pik-nō'sis)
A thickening or condensation; specifically, a condensation and reduction in the size of the cell or its nucleus, usually associated with hyperchromatosis; nuclear pyknosis is a stage of necrosis.
[pykno- + G. -osis, condition]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

pyk·no·sis

(pik-nō'sis)
A thickening or condensation; specifically, a condensation and reduction in the size of the cell or its nucleus, usually associated with hyperchromatosis.
[pykno- + G. -osis, condition]
Medical Dictionary for the Dental Professions © Farlex 2012
Mentioned in
References in periodicals archive
Histopathological findings in liver mostly showed vascular degeneration associated with nuclear pyknosis; also it is found in liver marked depletion and congestion of the portal vein accompanied with nuclear pyknosis.
Genotyping characterization on clostridium perfringens affecting laboratory animals
It is known that ooplasmic vacuolation and GC pyknosis are observed simultaneously with early antrum formation in atretic follicles (21, 33).
Uterine artery interruption: evidence for follicular growth and histochemical and biochemical changes
(c) Sinusoidal dilatation and pyknosis, H&E stain.
Ameliorative Effect of Propolis Against Hepatorenal Alterations Induced by Methotrexate: Morphohistopathological Study/Efecto Protector del Propoleo en las Alteraciones Hepatorrenales Inducidas por el Metotrexato: Estudio Morfohistopatologico
Panels A-G show that the morphology of Saos-2 cells cultured in different extracts for 72 h was normal and healthy, similar to that of the negative control, but the 5% DMSO positive control revealed many apoptotic cells, manifested as nuclear pyknosis (panel H).
Improved biological performance of magnesium by micro-arc oxidation
All the follicles were classified as either healthy or atretic, respectively, according to the absence or presence of signs of oocyte and/or granular degeneration such as pyknosis of the nucleus, infolding of the cell wall in oocyte, ingression of granulosa cells within the antral cavity, pulling away of granulosa cells from the basement membrane, infolding or thickening of base membrane and uneven layers of granulosa cells (27).
Effects of maternal caffeine consumption on ovarian follicle development in Wistar rats offspring
In line with our in vitro results, the subcutaneous xenogeneic or allogeneic co-administration of different intestinal adenocarcinoma cell line in murine model with sesquiterpene compound, Ferutinin, resulted in slower tumor growth rate with concurrent nuclear pyknosis and apoptosis (Arghiani et al.
Potent anti-angiogenic and cytotoxic effect of conferone on human colorectal adenocarcinoma HT-29 cells
In this condition, the superficial portion of the squamous epithelium becomes necrotic, giving a two-tone appearance to the mucosa, with pyknosis resembling parakeratosis and necrosis of the superficial layers (Figure 3, A and B).
Esophagitis: Old Histologic Concepts and New Thoughts
Hypertrophy and pyknosis are signs of cellular degeneration (Garman, 2011), and may arise when a chemical agent traumatizes the brain.
Gongronema latifolium Modulates Rauwolfia vomitoria-Induced Behaviour and Histomorphology of the Cerebral Cortex/ Gongronema latifolium Modula los Cambios de Comportamiento e Histomorfologia de la Corteza Cerebral Inducidos por Rauwolfia vomitoria
(10, 11) These include: islands of well differentiated squamous cells present at all levels of the epithelium; disorganized cellular polarity; cellular pleomorphism; presence of nucleoli in some cells; frequent pyknosis; and individual cell keratinisation.
Coexistence of microinvasive squamous carcinoma and CIN3 in the uterine cervix
Malathion administration also reduced epididymal weight [63], whereas increased weight of epididymis and cellular necrosis, nuclear pyknosis, and a deleterious effect on the structural integrity following methyl parathion exposure were observed [61, 64].
Effects of subchronic exposure to cadmium and diazinon on testis and epididymis in rats
Copyright © 2003-2025 Farlex, Inc Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.