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Topic: Pyknosis

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	Irreversible Cell Injury - Discussion
		pyknosis, karyorrhexis and karyolysis) and cell membranes are disrupted the cell is on the path to irreversible injury and death.
		In heart muscle, episodes of ischemia or reduced blood flow, if of short duration, may produce periods of pain and shortness of breath (angina), but if prolonged will result in death of the cardiac muscle cells and heart attack or myocardial infarction.
		These changes are not exclusive to circulatory failure due to heart falure, but may also occur in many other conditions, e.g.
	www.uwo.ca /pathol/cases/c_irreversible/discussion.html (312 words)

	Microscopic Description - Case 17 (Site not responding. Last check: 2007-10-10)
		The normal lobular architecture is distorted by portal expansion, because of fibrosis, cholangiolar proliferation and a mild to moderate mixed inflammatory cell infiltrate.
		Bile duct infiltration and damage by lymphocytes is easily seen, and there is fairly widespread atrophy and pyknosis of the biliary epithelium.
		This should be reflected in fairly significant elevations of the gamma glutamyltranspeptidase and alkaline phosphatase.
	tpis.upmc.edu /tpis/casedata/H00043/MH00043.html (370 words)

	The PSD95-nNOS interface: a target for inhibition of excitotoxic p38 stress-activated protein kinase activation and ...
		Cells were fixed and DNA stained with Hoechst 33342, and the inhibitors reduced glutamate-induced pyknosis.
		Pyknosis of cells was measured between 30 and 180
		Pyknosis of transfected cells was assessed as described in the Fig.
	www.jcb.org /cgi/content/full/168/1/117 (6900 words)

	Microscopic Description - Case 18 (Site not responding. Last check: 2007-10-10)
		There is, however, widespread bile duct atrophy and pyknosis.
		In addition, there is a decrease in bile ducts; in total, there are 13 triads and at least five are devoid of bile ducts.
		In this case, I would favor a diagnosis of chronic rejection because of the widespread nature of the bile duct atrophy and pyknosis, the portal tract collagenization, the bile duct loss and the relative paucity of periductal edema.
	tpis.upmc.edu /tpis/casedata/H00044/MH00044.html (356 words)

	PDI
		Mitochondrial pyknosis and swelling are associated with endoplasmic dilation (83) (Figure 159).
		The mitochondria show pyknosis or swelling and differences in the size and number of granules in the matrix (Figure 160).
		Figure 160 — Pyknosis and swelling of mitochondria in a mesothelial cell of parietal peritoneum after 13 months of peritoneal dialysis (TEM, ×15,000).
	www.multi-med.com /pdigifs/pdi20s3/peritoneal04.htm (445 words)

	[No title] (Site not responding. Last check: 2007-10-10)
		An example of a reversible injury is (A) pyknosis (B) cytoplasmic vacuoles (C) rupture of cell membrane (D) karyolysis (E) karyorrhexis 7.
		A example of an irreversible injury is (A) cellular edema (B) chromatin clumping (C) cytoplasmic inclusions (D) mitochondrial swelling (E) rupture of cell membrane 8.
		Cloudy swelling, hydropic change and fatty change are all examples of (A) early neoplastic change (B) hyaline change (C) morphologic expression of reversible cell injury (D) patterns of cell death (E) postmortem artefact 28.
	members.aol.com /shawnhowie/wsu/cellinjury.txt (4876 words)

	Distinct Requirements for p38{alpha} and c-Jun N-terminal Kinase Stress-activated Protein Kinases in Different Forms of ...
		sharp contrast to the pyknosis induced by withdrawal of trophic
		and pyknosis and lactate dehydrogenase release to the extracellular
		Pyknosis of GFP-positive cells was assessed by Hoechst 33342 staining.
	www.jbc.org /cgi/content/full/279/34/35903 (7202 words)

	Age-related artifact (Site not responding. Last check: 2007-10-10)
		The aged blood smear illustrates echinocyte formation and swelling of neutrophil nuclei.
		Extreme crenation of the erythrocytes is evident, which could easily mask or render suspect significant pathologic shape abnormalities.
		The leukocyte nucleus has undergone pyknosis and karyorrhexis, making certain identification impossible.
	www.diaglab.vet.cornell.edu /clinpath/modules/rbcmorph/age.htm (223 words)

	Gulf Ecology Division
		Although the alterations in Busan-exposed shrimp were generally more pronounced, the antennal glands of 32 out 36 experimental shrimp exhibited abnormalities that were manifested primarily as increased secretory activity by the labyrinth cells.
		In dithiocarbamate-exposed shrimp with 'fl gills,' the labyrinth epithelium exhibited moderate nuclear hypertrophy, apparent cell sloughing, intense secretory activity, and occasional melanized lesions; alterations in the antennal gland coelomosac included nuclear pyknosis, a general deterioration of podocyte organization, and an unusual increase in hemolymph density adjacent to affected tissues.
		This study suggests that some of the observed abnormal/pathological changes are the indirect consequence of branchial degeneration.
	www.epa.gov /ged/publica/c1711.htm (209 words)

	Image Description (Site not responding. Last check: 2007-10-10)
		While cytoplasmic changes associated with cell death are not specific, nuclear changes are.
		The large arrow indicates a normal-appearing nucleus while the smaller arrow indicates a nucleus that is small and dark -- features of "pyknosis." Pyknotic nuclei suggest that cells have died (are undergoing necrosis).
		If this page was accessed from the reader (web version) and return is desired, either 1) click on the brower "back button" or 2) click on the desired topic in the left frame.
	www.usc.edu /hsc/dental/PTHL312abc/312a/02/IMGs/26bb.html (79 words)

	Amazon.com: "increased pyknosis": Key Phrase page (Site not responding. Last check: 2007-10-10)
		5 reveal severe hypocellularity and significantly increased pyknosis in the mutant fore- brain.
		internuclear bridges; (iii) nuclear lobulation; (iv) irregularity or fragmentation of nuclei; (v) gigantism; (vi) increased pyknosis; and (vii) basophilic stippling.
		The bone marrow erythroid component (calculated from cellularity and the percentage of erythroblasts)...
	www.amazon.com /phrase/increased-pyknosis (210 words)

	S11C30P25Varicella & HFM
		Some of the degenerating cells show nuclear pyknosis and a perinuclear vacuole.
		The cytoplasm is condensed at the periphery of the dying cells (dyskeratosis).
		Scattered cells show individual cell necrosis with pyknosis of nuclei and increased cytoplasmic acidophilia.
	www.mcl.tulane.edu /classware/pathology/medical_pathology/InflamDermato/S11C5Virus/S11C30P25Varicella_HFM/s11c30p25varicella_hfm.html (365 words)

	A STUDY OF GLUCO-CORTICOSTEROID-INDUCED PYKNOSIS IN THE THYMUS AND LYMPH NODE OF THE ADRENALECTOMIZED RAT -- La Pushin ...
		A STUDY OF GLUCO-CORTICOSTEROID-INDUCED PYKNOSIS IN THE THYMUS AND LYMPH NODE OF THE ADRENALECTOMIZED RAT -- La Pushin and de Harven 50 (3): 583 -- The Journal of Cell Biology
		A STUDY OF GLUCO-CORTICOSTEROID-INDUCED PYKNOSIS IN THE THYMUS AND LYMPH NODE OF THE ADRENALECTOMIZED RAT
		to induce pyknosis of thymocytes in a variety of in vitro experiments,
	www.jcb.org /cgi/content/abstract/50/3/583 (274 words)

	[No title] (Site not responding. Last check: 2007-10-10)
		(A) pyknosis * (B) cytoplasmic vacuoles (C) rupture of cell membrane (D) karyolysis (E) karyorrhexis 4.
		Cloudy swelling, hydropic degeneration and vacuolar degeneration are all examples of (A) hyaline change (B) morphologic hallmarks of cell death * (C) morphologic expression of reversible cell injury (D) post mortem artefact (E) early neoplastic change 5.
		A well-demarcated lesion with increased cytoplasmic eosinophilia, karyolysis, and intact tissue architecture is characteristic of (A) caseous necrosis (B) enzymatic fat necrosis * (C) coagulation necrosis (D) cloudy swelling (E) fibrinoid necrosis 7.
	www.pathguy.com /one_99.txt (2270 words)

	98 WSC 9 Ans (Site not responding. Last check: 2007-10-10)
		Larger bronchioles retain intact ciliated bronchiolar epithelial cells but scattered foci have bronchiolar epithelial cells with vacuolation, hypereosinophilia, pyknosis, loss of cilia, and detachment (degeneration and necrosis).
		Proximal tubule epithelium (right center) is swollen and vacuolated with nuclear pyknosis (degeneration and necrosis).
		Some distal tubules contain homogenous light pink material (hyaline cast, lower right) and others are filled with hemoglobin casts (left).
	www.afip.org /vetpath/WSC/wsc98/98ans09.htm (310 words)

	apoptosis but not necrosis - ValueMD Medical Schools Forum
		Necrosis is a word that describes the morphological changes that occur to a cell after its death.
		These include the following: (1) cellular swelling (2) denaturation of cytoplasmic proteins (gives rise to eosinophilia) (3) breakdown of cell organelles (4) a sequence of nuclear changes which include (a) karyolysis (b) pyknosis (c) karyorrhexis.
		pyknosis is the first thing that happens and is characterized by nuclear shrinkage (the word "pyknosis" reminds me of my pinky finger, the smallest finger, and so that is how I remember that pyknosis referst to nuclear shrinkage).
	www.valuemd.com /pathology-forum/35888-apoptosis-but-not-necrosis.html (475 words)

	An Oxidized Purine Nucleoside Triphosphatase, MTH1, Suppresses Cell Death Caused by Oxidative Stress -- Yoshimura et ...
		of pyknosis and electron-dense deposits accumulated in mitochondria.
		MTH1-null MEFs died by pyknosis accompanied with the morphological
		pyknosis, thus indicating that the accumulation of oxidized
	www.jbc.org /cgi/content/full/278/39/37965 (5893 words)

	A MICROSPECTROPHOTOMETRIC STUDY OF RED CELL NUCLEI DURING PYKNOSIS -- Korson 93 (2): 121 -- The Journal of Experimental ...
		A MICROSPECTROPHOTOMETRIC STUDY OF RED CELL NUCLEI DURING PYKNOSIS -- Korson 93 (2): 121 -- The Journal of Experimental Medicine
		Articles by Korson, R. The Journal of Experimental Medicine, Vol 93, 121-128, Copyright, 1951, by The Rockefeller Institute for Medical Research New York
		A MICROSPECTROPHOTOMETRIC STUDY OF RED CELL NUCLEI DURING PYKNOSIS
	www.jem.org /cgi/content/abstract/93/2/121 (145 words)

	Morphological studies on the ageing and osteoarthritis of the articular cartilage in C57 black mice Journal of ... (Site not responding. Last check: 2007-10-10)
		Under the physiologically normal ageing process, intracellular ultrastructure remained relatively intact throughout the study period.
		Although vacuolisation of rough endoplasmic reticula, accumulation of fibrils, nuclear pyknosis, and formation of fat droplets have been associated with normal ageing; they were more often seen in osteoarthritic joints.
		The diameters of matrix collagen fibres were slightly greater, but the fibre structure was maintained, and perpendicular arrangement and tidemark stratification were hardly seen in the deep layer.
	www.findarticles.com /p/articles/mi_qa3794/is_200504/ai_n14682644/pg_8 (539 words)

	Demonstration of Akabane Virus Antigen Using Immunohistochemistry in Naturally Infected Newborn Calves -- Noda et al. ...
		necrosis with pyknosis of glia and neurons, loss of myelin,
		of glial cells, pyknosis of neuronal cells, and decreased number
		pyknosis of glia and neurons, infiltration of glial cells and
	www.vetpathology.org /cgi/content/full/38/2/216 (1264 words)

	BDNF Injected into the Superior Colliculus Reduces Developmental Retinal Ganglion Cell Death -- Ma et al. 18 (6): 2097 ...
		Hamsters used to study the rate of RGC pyknosis were killed on P4 by an overdose of
		in the rate of pyknosis in the RGC layer between retinae from
		of pyknosis in the RGC layer of these animals was not significantly
	www.jneurosci.org /cgi/content/full/18/6/2097 (7475 words)

	pyknosis - Dictionnaire Français-Anglais WordReference.com
		We found no English translation for 'pyknosis' in our French to English Dictionary.
		Or did you want to translate 'pyknosis' from English to French?
		Forum discussions with the word(s) 'pyknosis' in the title:
	www.wordreference.com /fren/pyknosis (41 words)

	Lipid Peroxidation, Caspase-3 Immunoreactivity, and Pyknosis in Late-Gestation Fetal Sheep Brain after Umbilical Cord ... (Site not responding. Last check: 2007-10-10)
		and pyknosis in the brains of fetal sheep subjected to brief
		), and pyknosis in brain regions of control fetuses and in UCO fetuses 48 h after two episodes of occlusion of the umbilical cord for 10 min.
		Photomicrographs showing 4-HNE immunopositive cells in control (left panels) and UCO fetuses (right panels) 48 h after complete occlusion of the umbilical cord for 10 min on two occasions.
	www.pedresearch.org /cgi/content/full/55/5/864 (4692 words)

	MonkeyFilter \| This is funny if you live IN NEBRASKA. (Site not responding. Last check: 2007-10-10)
		If you've never seen the Dean Scream in context, you should.
		posted by pyknosis at 03:02AM UTC on October 15, 2004
		I've been to some of these rallies and they were incredibly raucous events - I know people who were on the floor in front of the stage at that particular event and could not hear a word he said.
	monkeyfilter.com /link.php/5159 (206 words)

	MonkeyFilter \| Link from pyknosis (Site not responding. Last check: 2007-10-10)
		posted by pyknosis at 01:19AM UTC [trackback] (18 comments total)
		Weapons of mass destruction = Stupid son saw no traces of 'em.
		I dig your blog dr. pyknosis, especially the part about the schizophrenic cyborg from 2011, who thinks the government is burning out your hair.
	monkeyfilter.com /link.php/5337 (326 words)

	untitled (Site not responding. Last check: 2007-10-10)
		They may produce elevation of serum alkaline phosphatase due to small multi focal parenchyma compressions affecting the bile flow.
		Presence of single, large fat droplets in hepatocytes pushing the nucleus to the periphery of the cell, with or without necrosis (pyknosis).
		This change is probably due to impaired egress of lipid from hepatocyte.
	www.meddean.luc.edu /lumen/Meded/orfpath/master.htm (1388 words)

	Contagious apoptosis facilitated by the HIV-1 envelope: fusion-induced cell-to-cell transmission of a lethal signal -- ...
		Note that contagious apoptosis is characterized by full-blown nuclear apoptosis with pyknosis of all nuclei (in the absence of Z-VAD).
		In the presence of Z-VAD, however, all nuclei showed PACC (partial chromatin condensation, irregular contours and rippled nuclear envelopes).
		Nuclear pyknosis was measured as in A after 72 hours of co-culture of control syncytia, and overnight co-culture for contagious apoptosis.
	jcs.biologists.org /cgi/content/full/117/23/5643 (5635 words)

	Examination of the Smear
		Figure 1: Cartoon depicting the difficulty controlling cancer.
		Pyknosis is a process in which each lobe of the neutrophil becomes round and dark; the chromatin pattern disappears.
		This generally signifies slow death of the cell, and may not suggest as pathologic a process as karyorrhexis and karyolysis.
	www.cvm.tamu.edu /cancer/professional/cytology/asp/cytwork03.asp (1036 words)

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