cell injury Flashcards
Acute pancreatitis
Fat necrosis - enzymatic digestion from lipases “leaked” into adipose tissues
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Liquefactive Necrosis of the brain
Psammoma body
Dystrophic Calcification
Occurance of wet gangrene
Secondary to bacterial infections at site of ischemic damage
Adaptation: Barrett’s esophagus
Metaplasia - squamous –> columnuar on small intestintal globet cell metaplasia
Too much vitamin D
Metastatic Calcification
Necrosis or Apoptosis: Desctruction of adipocytes
Fat Necrosis
Adaptation: Liver undergoing compensatory growth
Hyperplasia
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Dry Gangrene - coagulative necrosis
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Wet Gangrene - Liquefactive necrosis
Adaptation: Scarring and Fibrosis
Hyperplasia
Adaptation: increase in endometrial thickness under estrogenic stimulation
Hyperplasia
Necrosis or Apoptosis: Inflammation levels and number of cells
Necrosis has increase inflammation and larger number of cells/area of tissue.
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Dystrophic calcification
Fat necrosis large scale destruction
Saponification with deposition of calcium salts
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Caseuous necrosis
Intrinsic Pathway
from intracellular injury (radiation, toxins, Ros, ), more p53, more Bcl family members (bak, bax)
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Psomamma body - dystrophic calcification.
Adaptation: thickening of the heart, decrease in the volume
Hypertrophy (Cardiac)
Necrosis or Apoptosis: Tissue architecture is lost, cell outlines not present
Liquefactive necrosis
Adaptation: Smoking
Metaplasia - columnar –> squamous
Extrinsic Pathway
Death receptors - FAS w/ FASL, TNFR1
or Cytotoxic T-cell Mediated Death with Granzyme B
Adaptation: Poor nutrition - generalized cachexia
Atrophy
Necrosis or Apoptosis: CNS Necrosis
Liquefactive Necrosis
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Endogenous - hemosiderin - hemoglobin break down product, iron stored in cells
Adaptation: reduced endocrine stimulation in postmenopausal state
Atrophy
Dystrophic Calcification
Normal systemic calcium levels, associated with dying/degernerating cells - atherosclerosis and valvulatr heart disease, Fat necrosis
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Lipid accumulations steatosis - fatty change in liver. Fatty acid accumulation within cells with normally active FA metabolism
Karyolysis
nuclear dissolution - coagulative necrosis
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Exogenous - Lipofuscian - wear and tear pigment - phopholipids/proteins-lack of enzyme
Necrosis or Apoptosis: Tuberculosis in lung
Caseous Necrosis
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Foamy macrophages, atherosclersosis from cholesterol, lipid accumulation
Necrosis or Apoptosis:cell death with dead inflammatory cells resulting in pus
Liquefactive necrosis
Necrosis or Apoptosis: Complete enzymatic digestion of dead cells
Liquefactive necrosis
Necrosis or Apoptosis: Microscopic visual shows does not tissue architecture, surrounded by granulomatous inflammation
Caseous (Gross) Necrosis
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liquefactive necrosis
Metastatic Calcification
Hypercalcemia, destruction of bone, Increase PTH for bone resorption, in gastric mucosa, kidneys, lungs, blood vessels
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Xanthoma lipid accumulation w/ hypercholesterolemia
Adaptation: Decreased workload due to disuse in the skeletal muscle, bone
Atrophy
Adaptation: increasing cell number for mammary glands during lactation to provide milk
Hyperplasia
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Liquefactive necrosis
Adaptation: Loss of nerve supply due to dernevation in the skeletal muscle
Atrophy
Adaptation: Ischemia in brain
Atrophy
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Fat necrosis
Pyknosis
Coagulative necrosis - nuclear shrinkage and darkening
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Exogenous - carbon dust - anthrocosis - lung found in macrophages in lymphatic channels
Apoptosis Physiologic
Involution of structure during development, eliminate immune cells (lymphocytes, neutrophils), Involution following hormoen withdrawal, CTL mediation.
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Coagulative necrosis
Necrosis or Apoptosis: Denaturation of cytosolic proteins
Necrosis (coagulative)
Adaptation: Gravid Uterus
Hyperplasia and Hypertrophy – the uterus during pregnancy
Apoptosis Pathologic
Radiation, drugs, DNA damage
Viral infections - autoimmune
Neoplastic
ex. of dry gangrene
Extereme diabetes, intestines
Karyyorrhexsis
fragmentation of pyknotic nucleus