3rd Shifting - LQ1 part 2 Flashcards
connect the bile canaliculi to bile ductules in the periportal region
Canals of Hering
Major 1° Liver diseases
(1) viral hepatitis
(2) alcoholic liver disease
(3) nonalcoholic fatty liver disease (NAFLD)
(4) hepatocellular carcinoma
PATTERNS OF HEPATIC INJURY
Degeneration and intracellular accumulation Necrosis and apoptosis Inflammation Regeneration Fibrosis
Most severe clinical consequence of liver disease
Hepatic Failure
the encephalopathy develops rapidly within 2 weeks of the onset of jaundice
fulminant liver failure
if the encephalopathy develops within 3 months of the onset of jaundice
subfulminant liver failure
Acute liver illness that is associated with encephalopathy within 6 months after the initial diagnosis
Acute Liver Disease
characteristic “musty” or “sweet and sour” body odor due to Shunting of sphlancnic blood from the portal into the systemic circulation
Fetor hepaticus
Hepatopulmonary Syndrome Clinical triad
Chronic liver disease
Hypoxemia
Intrapulmonary vascular dilation
12th most common cause of death; Account for most liver-related death
CIRRHOSIS
CHARACTERISTICS of Liver Cirrhosis
Bridging fibrous septae
Parenchymal nodules
Disruption of architecture of entire liver
Transient mild unconjugated hyperbilirubinemia
NEONATAL JAUNDICE (physiologic jaundice of the newborn)
Defect in hepatocellular excretion of bilirubin glucuronides across canalicular membrane
Dubin-Johnson syndrome
mutation in the ATP8B1 gene on chromosome 18q21 that causes impaired bile secretion
PROGRESSIVE FAMILIAL INTRAHEPATIC CHOLESTASIS (PFIC) 1
caused by mutations in the hepatocyte canalicular bile salt export pump (BSEP), encoded by the ABCB11 gene.
PROGRESSIVE FAMILIAL INTRAHEPATIC CHOLESTASIS (PFIC) 2
caused by mutations in the ABCB4 gene, characterized by cholestasis with a high serum GGT
PROGRESSIVE FAMILIAL INTRAHEPATIC CHOLESTASIS (PFIC) 3
Chronic hepatitis indistinguishable from chorionic viral hepatitis; pathogenesis is attributed to T cell–mediated autoimmunity
AUTOIMMUNE HEPATITIS
Antibodies circulating in type 1 Autoimmune Hepatitis
antinuclear (ANA)
anti–smooth muscle (SMA)
anti–actin (AAA),
anti–soluble liver antigen/liver-pancreas antige (anti-SLA/LP)