-
What type of necrosis is seen in the brain?
Liquefactive
-
What type of necrosis is seen in tuberculosis patients?
Caseous
-
What type of necrosis occurs everywhere in the body except in the brain?
coagulative
-
A type of necrosis where antigen:antibody complexes bind to fibrin in a Blood Vessel is called what?
Fibrinoid
-
In a patient with acute pancreatitis what type of necrosis is seen?
fat necrosis
-
Necrosis due to bacterial or fungal infection is caused what?
Liquefactive necrosis
-
What type of necrosis is described as cheeselike?
caseous
-
Coagulative necrosis superimposed with infection is said to be what?
wet gangrene
-
What is the difference between apoptosis and necrosis in terms of the cell size?
- Necrosis--swelled cell
- Apoptosis--shrinked cell
-
What are the nuclear changes seen in necrosis?
- Pyknosis---> karyorrhexis---> karyolysis
- decreased size of nucleus and increased basophilia---> fragmentation of nucleus--> diminished basophilia
-
Myositis ossificans?
Bone formation in muscle
-
Gastric acid reflux is known to cause what type of metaplasia?
Squamous to columnar metaplasia
-
Barret's esophagus
- Glandular metaplasia
- squamous--->columnar
-
Deficiency of what vitamin results in squamous metaplasia?
Vitamin A
-
What kind of metaplasia occurs in a chronic cigarette smoker?
Columnar to squamous metaplasia
-
What happens to the gyri and sulci in a patient with Alzeimer's?
The gyri are narrowed and sulci are widened
-
What is used to identify Glycogen?
-
In what age group are you going to encounter lipofuscin?
elderly
-
What is ochronosis?
tissues turning a dark color
-
What stain is used for Iron?
Prussian Blue
-
Pallor, icterus, cyanosis, Clubbing, Lymphodenopathy, edema
-
Werner's?
premature aging
-
What causes coagulative necrosis?
ischemia
-
History of stroke would produce what necrosis?
liquefactive
-
Necrosis and infection produces what type of necrosis?
liquefactive
-
In what ppl would you find fat necrosis?
alcoholics
-
Depostition of immune complexes produces what type of necrosis?
fibrinoid
-
Hypesensitivity reactions Type III produces what type of necrosis?
Fibrinoid necrosis
-
Cyanine inhibits what enzyme?
cytochrome oxidase
-
What is worse, hypoxia or ischemia, why?
ischemia because aerobic and anaerobic oxidation is halted
-
How does protein malnutrition cause fatty change in the liver?
no protein= no apolipoprotein= can't export FA out of the liver
-
How does hypoxia cause fatty change in the liver/heart?
Hypoxia= low oxygen= inhibits fatty acid oxidation
-
How does starvation cause fatty acid liver change?
starvation increases mobilization of fatty acids
-
-
What is used to stain for Glycogen?
PAS- periodic acid shift
-
How does anemia produce a tigered affect of affected myocardium with unaffected myocardium with fatty change?
anemia=low oxygen=inhibition of FA oxidation= deposition of lipids in alternating myocardium
-
What is cholesterolosis?
cholesterol rich macrophages in the lamina propria of the gall bladder
-
What is Atherosclerosis?
smooth muscle cells and macrophages filled with oxidized cholesterol in the intima layer of the arterial wall
-
What is a Xanthoma?
cholesterol filled macrophages in the CT
-
Where are Xanthomas found?
-
Nieman Pick C results in what?
cholesterol accumulation in multiple organs
-
What are Russell bodies?
rER inclusions filled with proteins due to increased protein synthesis
-
What is found in pink hyaline reabsorption droplets?
protein
-
Where are pink hyaline reabsorption droplets found in the kidney due to proteinuria?
proximal renal tubules
-
In alpha-1- antitrypsin deficiency where do misfolded proteins accumulate?
ER of the liver
-
In what cells are Russell bodies found?
active plasma cells
-
Vimentin is an intermediate filament characteristic of what ?
CT cells
-
Glial intermediate filaments are characteristic of what cells?
Astrocytes
-
Intracellular accumulations of proteins usually appear as what?
rounded eosinophilic droplets
-
Eosinophilic inclusion droplets of what intermediate protein are found in alcoholic liver disease?
keratin
-
Pink= hyaline droplets=protein
-
Alcoholic hyaline is composed of what intermediate protein?
keratin
-
Walls of kidney arteries are often hyalinzed due to what two chronic conditions?
-
Accumulation of coal in macrophages in the lymph nodes in the tracheobronchial regions is called?
anthracosis
-
Tattoo pigment and coal dust resides in what cell of the dermis?
macrophages
-
A product of lipid peroxidation of lipid membrane is what?
Lipofuscin
-
What substrate acts as a telltale sign of free radical injury and lipid peroxidation?
Lipofuscin
-
What is cachexia?
Physical wasting with loss of weight and muscle
-
Where does lipofuscin accumulates?
- perinuclear region of
- - liver
- - heart
-
What is ochronosis?
deposition of homogentisic acid in CT and skin
-
Aggregates of ferritin micelles is called what?
Hemosiderin
-
Stain for heme and hemosiderin?
Prussian Blue
-
Deposition of calcium in dying tissue, locally is called what?
Dystrophic Calcification
-
Hypercalcemia may lead to what type of calcification?
Metastatic
-
In _____________ macrophages activate a vitamin D precursor.
Sarcadoisis
-
Calorie restriction activates a class of what proteins that are thought to promote expression of protein that mediate longevity
sirtuins
-
Causes for acute inflammation?
- infections
- necrosis
- foreign bodies
- immune reactions
-
5 cardinal signs of inflammation?
- rubor--redness
- calor--heat
- dolor--pain
- tumor---swelling
- function deficit
-
Fluid that is rich in proteins, leukocytes in the interstitial space is called?
exudate
-
Fluid that is low in protein and leukocytes in the interstitial space is called?
transudate
-
In terms of specific gravity what is the difference between exudate and transudate?
exudate has high specific gravity
-
What are the 3 events of blood vessels that occur around the area of inflammation?
- increased blood flow
- increased vascular permeability
- extravasation of leukocytes into the interstitial space
-
Inflammation induced vasodilation is induced by what two chemical mediators?
-
Increased permeability of BV is mediated by the contraction of endothelial cells mediated by which molecules?
histamine, bradykinin, substance P, leukotrienes
-
Inflammation of lymph vessels is called?
lymphangitis
-
Inflammation of lymph nodes is called?
lymphadenitis
-
What drains the increased extracellular fluid in the interstitial space during inflammatory edema?
lymphatic vessels
-
Angiogenesis as well as formation of new lymphatic vessels occurs during inflammation for what reason?
- to accomodate increased blood flow
- to accomodate increased extracellular fluid in the interstitium
-
Sialyl-lewis glycoprotein on the leukocyte binds to what on the endothelium?
P and E selectins
-
Integrin binds to what on the endothelium?
ICAM-1
-
Which selectin is used for homing of T lymphocytes to HEV of lymph nodes?
L-selectin
-
Firm adhesion of leukocytes to endothelium is mediated by what two molecules?
- Integin---ICAM
- Integrin--VCAM
-
Which two molecules upregulate selectins on the endothelium in response to inflammation?
-
What increases the avidity of integrins?
chemokines
-
What molecule between enodothelial cells allows for transmigration?
PECAM
-
Leukocyte adhesion deficiency type I is caused by what?
Defective LFA-1/integrin
-
Leukocyte Adhesion Deficiency type II is caused by what?
defective fucosyl transferase which synthesizes Sialyl-Lewis glycoproteins
-
What are the chemotactic agents that allow for migration of leukocytes in the Interstitium?
-
Neutrophils predominate in infections caused by what?
pseudomonas
-
Mammalian glycoproteins and glycolipids contain _____ as the terminal group while bacterial glyco proteins and lipids contain-------
- sialic acid and N-actylglucosamine
- fucose and mannose
-
The glycopeptide coat of all bacteria contains _______
which is hydrolyzed by lysozy
Muramic acid-N-acetylglucosamine
-
Mediators of inflammation come from what two different sources?
- cell produced
- plasma proteins via liver
-
Histamine acts on which receptors located on the arterioles and post capillary venules?
H1
-
What essential aa gives rise to arachidonic acid?
Linoleic acid
-
Which prostoglandin induces uterine contraction and broncho and vasoconstriction?
PGF
-
Which prostoglandin inhibits platelet aggregation and is a potent vasodilator?
PGI
-
Lipoxins A and B have what function?
inhibit neutrophil adhesion and chemotaxis
-
What is the function of PGD and E?
- Vasodilation
- increased permeability
-
Which leukotriene is involved in neutrophil chemotaxis?
LTB4
-
Which leukotriens mediate vaso and bronchoconstriction?
LTC4, LTD4, LTE4
-
What agent blocks conversion of AA to Leukotrienes?
Zileuton
-
What agent blocks leukotriene receptor?
monteleukast
-
Which chemical mediator has both inflammatory functions such as vasodilation and increasing permeability as well as inhibiting leukocyte adhesion?
NO
-
The familial Mediterranea fever is caused by a deficient what?
IL-1 production
-
Chronic inflammation as in Familial Mediterrean fever results in protein deposition in tissues called what?
Amyloidosis
-
Sustained production of what contributes to cachexia?
TNF
-
Chemokines signal thru what type of receptor?
G protein coupled receptors
-
Which chemokine is used as a coreceptor for HIV1?
-
What cytokine is produced by Th17 cells that recruit neutrophils?
IL-17
-
What are the 3 functions of Complement system?
- inflammation ---via C3a, C5a
- phagocytosis---C3b
- MAC---C5b-C9
-
Factor XII has an effect on what 4 different cascades?
- Kinin
- Fibrinolytic
- complement
- Clotting
-
What type of signalling is upregulated in Marfans?
TGF-beta
-
FBN-2 mutation
Congenital contractural arachnodactyly
-
Diagnostic tool for Marfans?
echocardiography
-
Gaping defects
Ehler's Danlos syndrome
-
What chronic inflammatory conditions lead to cancer?
- viral hepatitis
- H. Pylori gastritis
- chronic pancreatitis
- Ulcerative colitis
-
Chronic inflammation can lead to what 4 conditions?
- cancer
- neurodegenerative disorder (Alzeimer's)
- Diabete Mellitus I
- Atherosclerosis
-
What are the possible mechanisms of chronic inflammation leading to neoplasms?
- stem cell recruitment
- production of ROS
- survival signals
-
What are the 3 events to which acute inflammation can ultimately lead to?
- 1. Resolution of inflammation
- 2. Fibrosis
- 3. Chronic inflammation
-
What are the 3 products that cause tissue damage in chronic/acute inflammation?
-
What are the 3 molecules which mediate fever?
-
How does LPS induce fever?
- LPS induces Il-1 and TNF release from Leukocytes
- IL-1 and TNF upregulate COX enzyme
- COX enzyme synthesizes PGE2
- PGE2 resets temperature point in posterior hypothalamus
-
What two molecules mediate pain?
-
Which chemokine receptors are used by HIV-1 for entry into the cell?
-
What are the molecules involved in acute inflammation?
-
What are the molecules involved in chronic inflammation?
-
What are the vasoconstriction molecules?
-
Molecules which promote vasodilation?
- histamine
- NO
- Prostoglandins
-
Molecules which promote vascular permeability
-
Molecules which promote vascular permeability?
- Histamine
- Serotonin
- Bradykinin
- Prostoglandins
- C3a, C5a
- LT C,D,E
- PAF
- Substance P
-
-
-
-
What are the 2 components of blood that participate in inflammation reaction?
-
What is Serum Amylod Protein A (SAA protein)?
What function does it serve during acute phase protein?
- apolipoprotein
- redirects high-density lipoproteins to macrophages at a site of injury
-
Which acute phase protein is used as a marker for increased risk of myocardial infarction in patients with coronary artery disease?
C reactive protein
-
Prolonged presence of acute phase proteins because of chronic inflammation tends to cause deposition of proteins called what?
secondary amyloidoisis
-
Fibrinogen has what effect during acute phase protein production?
binds RBC and causes them to sediment
-
What acute phase protein causes increased Erythrocyte Sedimentation Rate?
Why?
- Fibrinogen
- Fibrinogen binds to RBC and stacks them
-
What are the four acute phase proteins?
- 1- C reactive protein
- 2- Serum Amyloid A protein (SSA protein)
- 3- Fibrinogen
- 4- Hepcidin
-
What acute phase protein is responsible for reducing the availability of iron during chronic inflammation?
Hepcidin
-
Elevated levels of what acute phase protein causes Microcytic, Hypochromic Anemia?
Hepcidin
-
What are the 3 functions of complement?
- 1-Inflammation- C3a, C5a
- 2-Opsonization- C3b
- 3- Membrane attack complex (MAC)- C5b-C9
-
What is one chemical mediator that elicits most of the vascular and cellular reactions of inflammation such as vasodilation, increased permeability, chemotaxis, degranulation, leukocyte adhesion
Platelet Activating Factor
-
Bone Marrow suppression as caused by tumor, radiation, chemotherapy causes what immuno-suppression?
Decreased Leukocyte Production
-
Diabetes, Malignancy and sepsis cause what kind of immuno-deficiency?
- Defective :
- adhesion
- chemotaxis
- phagocytosis
- microbicidal activity
-
Chronic Granulomatous Disease is of 2 types:
X-linked
Autosomal Recessive
Which component of the cell is defective in each i.e Cytoplasmic or membrane
- X-linked-membrane
- autosomal recessive-cytoplasmic
-
In what form are plasma proteins involved in inflammation present in the plasma?
Inactive precursors
-
Rupture of arteries and colon are commonly seen in what type of Ehler's Danlos Syndrome?
Vascular
-
Arthrochalasia and Dermatosparaxsis are forms of Ehler's Danlos syndrome caused by deficiency of collagen?
Type I
-
In what type of Ehler's Danlos Syndrome are ocular fragility seen?
Kyphoscoliosis
-
Classical type of Ehler's Danlos syndrome is caused by what mutation?
-
Vascular type of Ehler's Danlos Syndrome is caused by what mutation
COL3A1
-
What are the 6 types of Ehler's Danlos syndrome?
- 1. Classical- COL5A1, COL5A2
- 2. Hypermobility-uknown mutation
- 3. Vascular-COL3A1
- 4. Kyphoscoliosis- Lysyl Hydroxylase
- 5. Arthrochalasia- COL1A1, COL1A2
- 6. Dermatosparaxsis- Procollagen N-peptidase
-
What are the 3 symptoms of Marfans?
- Arachnodactyly
- Lens dislocation
- aortic aneurysm
- Pectus excavatum
- Pectus carnitum
- Tricuspid/Mitral prolapse----> mitral regurgitation
-
Defective extracellular matrix seen in Marfans is most likely due to upregulation or what growth factor?
TGF-beta
-
A mutation in FBN-2 causes what?
Congenital Contractual Arachnodactyly
-
Chemical Mediators involved in Vasodialtion?
- Histamine
- NO
- Prostaglandins
-
What factor do hypoxic cells produce which induce the production of inflammatory mediators?
HIF-1alpha
-
What molecules do necrotic cells release that stimulate the release of inflammatory mediators?
- Uric acid
- ATP
- DNA
- other metabolites
-
Non-enveloped viruses?
- calicivirus
- Parvovirus
- Reovirus
- Papilloma
- adenovirus
- Polyoma
- Picornavirus
-
In what cells does Parvovirus replicates?
RBC
-
What is the difference between Transudate and Exudate in terms of the protein content and specific gravity?
- Exudate--high protein content, high specific gravity
- Transudate- low protein content, low specific gravity
-
Purulent inflammation is made up of what?
neutrophilic pus and cellular debris
-
What is the difference between lobar and bronchopneumonia?
- Lobar--whole lobe is involved
- Bronchopneumonia---diffuse parts of the lung are involved
-
What is responsible for erythema?
redness (Rubor)
-
When is stasis produced?
upon vasodilation and increased vascular permeability
-
What is instrumental in accumulation of neutrophils along the endothelium?
Stasis--slowing down of blood flow
-
Transcytosis
Transport of fluids and protein thru the endothelium
-
Which chemical mediator promotes transcytosis?
VEGF
-
Vascular leakage of plasma fluid and proteins in patients with _______ can cause life threatening loss of fluid?
burns
-
What 4 factors increase vascular permeability?
- 1-histamine, serotonin, bradykinin, thromboxanes, PAF, substance P
- 2- endothelial injury due to burns, toxins
- 3- leukocyte mediated injury in chronic inflammation
- 4- VEGF
-
Lymphadenitis?
inflamed lymph nodes
-
Lymphangitis?
inflamed lymph vessels
-
What is margination?
redistribution of leukocytes adjacent to the endothelium
-
P-selectin molecules are stored in what cells?
In what structure?
- - Endothelial cells
- - Weibel-Palade bodies
-
Which molecules stimulate the redistribution of P-selectins from Weibell-Palade Bodies to the surface of the endothelial cells?
-
Sialyl-Lewis glycoproteins or Integrins involved in rolling of leukocytes along the endothelium?
Sialyl-Lewis Glycoproteins
-
Which molecule on the Leukocytes is involved in adhesion to the endothelium?
Integrin
-
What Leukocyte molecule is involved in Diapedes?
PECAM-1 or CD31
-
Integrin molecules binds to what receptors on the endothelium?
ICAM-1
-
What is transmigration or diapedes?
movements of a phagocyte thru the endothelial cells
-
Transcytosis vs. Transmigration
- Transcytosis--movement of fluid and plasma proteins thru the endothelial cells
- Transmigration-movement of Leukocytes the the endothelial cells
-
Thru what molecules are leukocytes able to bind to the extracellular matrix proteins?
-
In what bacterial infection do neutrophils predominate instead of macrophages?
Pseudomonas
-
What are the 3 opsonins?
- 1- IgG antibodies
- 2- C3b
- 3- Lectin
-
Bacterial glycoproteins and glycolipids have what sugar in contrast with mammalian GlycoProteins and Glycolipids
- fucose and mannose
- sialic acid and n-acetylglucosamine
-
In what condition are increased susceptibility to infections and albinism present?
Chediak-Higashi Syndrome
-
What effect does intake of fish oil have on inflammation?
Fish oil gives rise to resolvins and protectins which are anti-inflammatory
-
What are the mediators that act as anti-inflammatory agents?
- resolvins
- protectins
- TGF-beta
- Lipoxins
-
What is the initial stimuli for initiation of inflammation?
- microbial products
- necrotic cells contents-uric acid, ATP,
- Hypoxic cells contens--HIF-1alpha
-
Histamine exerts its vasoactive effects on blood vessels by binding to what receptors?
H1
-
ADH acting on the blood vessels acts on what receptors?
V1
-
Arachidonic acid could be converted from what essential fatty acid?
Linoleic acid
-
Which cells makes Thromboxane?
Platelets
-
Which cell makes prostacyclin?
endothelium
-
Balance between what two mediators ensures a right balance of clot making and breaking?
- Prostacyclins
- Thromboxanse
-
What is the proposed mechanism of how Cox-2 inhibitors increase the risk of arterial thrombosis?
- Celebrex(Cox-2 inhibitor) blocks the synthesis of prostacyclin in endothelial cells which stop platelet aggregation
- While platelets are making Thromboxane which promotes platelet aggregation
- Resulting in an im-balance and promotion of arterial thrombi
-
What are the 2 drugs that are used in asthma that
-block leukotriene production?
-block leukotriene receptors?
-
How do corticosteroids inhibit the synthesis of mediators of inflammation?
- by reducing the transcription of gene coding for
- -Cox-2
- -Phospholipase A2
- -IL-1
- TNF-beta
- -iNOS
-
What combines with NO to form Reactive Nitrogen Species?
superoxide anion
-
What are the enzymes that degrade free radicals?
- Superoxide dismutase
- Catalase
- Glutathione peroxidase
- Cerruloplasmin
- Ferritin
-
What is the mechanism of injury caused by reperfusion?
Reperfusion generates free radicals
-
How many different types of No synthase are there?
- 3
- eNOS--endothelial
- nNOS--neuronal
- iNOS--inducible
-
Which chemical mediator has both pro-inflammatory and anti-inflammatory properties?
NO
-
Which inflammatory mediator is considered to an endogenous mechanism for controlling inflammatory responses?
NO
-
Which cytokines are produced in acute inflammation?
- Il-1
- Il-6
- Il-8
- TNF
- Chemokines
-
Which cytokines are produced in chronic inflammation
-
Mutations in what interleukin gene cause inherited autoinflammatory syndromes such as Familial Mediterranean fever?
IL-1
-
In gout, the inflammasome complex (IL-1) is activated to produce a condition called Gout by what substrate?
Urate Crystals
-
In patients with Familiar Mediterranean Fever, the chronic inflammation may lead to deposition of protein called what?
Amyloidosis
-
TNF regulates energy balance by promoting protein and lipid mobilization for production of acute phase proteins resulting in wasting called?
cachexia
-
Eotaxin cytokine recruits what cells?
Eosinophils
-
Chemokines bind to what type of enzyme linked receptors?
G-proteins
-
What is the action of IL-17 ?
neutrophil activation and chemotaxis
-
What are the 2 anti-protease commonly found in serum and other secretions?
- alpha-1-antitrypsin
- alpha macrobulin
-
Acid proteases work where in the neutrophil?
Phagolysosome where the pH is acidic
-
What kind of proteases degreade ECM like collagen, elastin, fibrin?
Neutral
-
What are the functions of Neuropeptipe P (substance P)?
- pain
- blood pressure
- vascular permeability
- stimulation of secretion by endocrine glands
-
C3 and C5 can be cleaved by what?
enzymes in the exudate
-
Fibrinous exudate is commonly seen in the inflammation of what?
body cavities such as pericardium, pleura, peritoneum, meninges
-
Purulent inflammation is primarily made up of what leukocytes?
- neutrophils
- pus forming bacteria
-
What is silicosis?
lung inflammation due to prolonged inhalation of silica
-
Macrophages in spleen and lymph nodes are called what?
histiocytes
-
What is immune inflammation?
when T and B cells are involved in the inflammation
-
Eosinophils contain what type of protein that elimincates parasites?
major basic protein
-
What is osteomyelitis?
inflammation of bone
-
What leukocytes are found in osteomyelitis?
neutrophils
-
Giant cells with nuclei arranged peripherally are called what?
Langhan
-
Giant cells with nuclei arranged in the middle of the cell are called what?
Foreign-body
-
What cytokine transforms macrophages into epitheliod cells?
IFN-gamma
-
What bacteria causes Tuberculosis?
Mycobacterium Tuberculosis
-
What type of granuloma is seen in Tuberculosis?
Caseating
-
What type of granuloma is seen in cat-scratch fever?
Rounded or stellate
-
Which granuloma has a "gumma" granuloma appearance?
Syphilis
-
What is one probably mechanism thru which fever might help fight infection?
Fever might induce heat-shock proteins
-
Why do you see anemia in chronic inflammation?
because an acute-phase protein called hepcidin reduces the bioavailability of iron during infection
-
What are leukemoid rxns?
elevated WBC count
-
What types of infections cause neutrophilia?
bacterial infections
-
What type of infections cause lymphocytosis?
viral infections
-
Typhoid fever has what effect on leukocytes?
causes leukopenia
-
What 2 cytokines mediate septic schock?
-
What is the reason for hypertrophy of the uterus during pregnancy?
Estrogen
-
What are the 2 mechanisms involved in cardiac hypertrophy?
- phosphoinositide kinase
- G protein coupled receptors
-
Hypertrophy of the heart is associated with a switch from adult contractile proteins to what form?
fetal
-
What vasoactive mediator is upregulated in a hypertrophied heart?
ANF
-
Which epithelium in a woman undergoes hypertrophy and hyperplasia?
glandular epithelium
-
Transcription factors involved in hypertrophy have what 3 effects?
- 1-induction of fetal gene
- 2- increases synthesis of contractile proteins
- 3- induces expression of growth factors
-
Hyperplasia of the endometrium and prostate is due to what?
excess hormone stimulation
-
How does a papilloma virus induces hyperplasia of epithelium?
viral genes code for growth factors
-
Hyperplasia can be cause by two factors?
-
What are common causes of atrophy?
- disuse
- reduced nerve supply
- reduced blood supply
- malnutrition
- lack of endocrine stimulation
- pressure
-
Deficiency of what vitamin is known to induce squamous metaplasia in the respiratory epithelium?
vitamin A
-
Myositis Ossificans?
formation of bone in muscle
-
Vitamin A regulates gene expression thru what receptor?
retinoid receptor
-
What is the first manifestation of cell injury?
cell swelling
-
Coagulative necrosis may be seen in what tissues?
What is seen in coagulative necrosis ?
- all tissues except brain
- no degradation of cells for some time
-
Liquefactive necrosis occurs where?
What is it characterized by?
- In the brain
- formation of liquid and pus
-
How is Fibrinoid necrosis produced?
when immune complexes precipitate with fibrin in the wall of arteries
-
Influx of what ion activates proteases and other degradating enzymes?
Ca
-
What are the intracellular enzymes that Ca activates?
phospholipase, protease, endonuclease, ATPase
-
What is oxidative stress?
unchecked accumulation of free radicals
-
What damage do free radicals perform?
- Lipid peroxidation
- protein oxidation
- DNA damage
-
At which point are injuries to cells considered irreversible?
- -loss of mitochondrial ability to create ATP
- - serious loss of membrane integrity
-
What are Myelin figures?
remnants of plasma membrane in vacuoles
-
What is the most useful strategy in ischemic injuries?
reducing core body temperature to 92 F
-
What are the causes of Ischemic-reperfusion injury?
- ROS
- inflammation
- complement
-
What is used to stain for apoptotic bodies?
Annexin V
-
What are the two pathways of initiating apoptosis?
- intrinsic--mitochondria via cyt c
- extrinsic--FASligand
-
What is hemosiderin?
aggregates of ferritin molecules which hold iron
-
What are psammoma bodies?
collections of calcium salts
-
What is the deficient enzyme in Tay-Sachs?
Hexosaminidase A
-
Hexaminidase A deficiency arises from a mutation in what chromosome?
15
-
Nieman-Pick is caused by a mutation in what chromosome?
11
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