Tumor Markers Flashcards
2 major processes in cell growth
proliferation and differentiation
increase cell number through cell division
proliferation
converts one cell type to another cell type
differentiation
disease of an abnormal growth
cancer
formation of cells with uncontrollable growth and dev’t
tumorigenesis
pathologic form of hyperplasia, genetic, irreversible
neoplasia
caused by injury, reversible
hyperplasia
small cell size, but not dead
atrophy
increase cell size but don’t divide
hypertrophy
cells change from one cell type to another cell type
metaplasia
abnormal new mass of tissue w/ no purpose
tumor
types of tumors
benign & malignant
non-cancerous, do not metastasize, grow slowly, well-differentiated
benign
cancerous, metastasize, grows rapidly, not well-differentiated
malignant
different forms of cancer
solid and diffuse tumors
malignant tumors from epithelial cells
carcinoma
malignant tumors from connective tissue/mesenchymal cells
sarcoma
malignant tumor from hematopoietic cells
lymphoma and leukemia
malignant tumor from totipotent cells
germ cell tumor
first growth in interphase.
G1 phase
2nd growth in interphase
G2 phase
synthesis of genetic material
S phase
markers related in apoptosis
p53 protein, bcl 2, Fas/Fas Ligand
new blood vessel formation
angiogenesis
signs and symptoms of cancer
CAUTION
produced by tumor cells/other cells in response to cancer/benign conditions
tumor markers
tumor markers are found in blood only (t/f)
false. blood, urine, tumor tissues etc.
adult cells become primitive cells
dedifferentiation
uses of tumor markers
screening, monitoring, prognosis, early detection, target therapy
indicates that cancer is more likely to occur
risk marker
types of tumor markers
enzyme serum proteins and hormones, carcinoembryonic proteins, monoclonal defined tumor markers, non specific, cell specific
types of carcinoembryonic tumor marker
CEA and AFP
type of non specific marker
LASA-P
give monoclonal defined tumor marker
CA 125, CA 15-3, CA 19-9, CA 72-4, FREE PSA
recommendations for test ordering
ordering serial tests, using same kit, half-life of tumor marker, hook effect
major fetal serum and carcinoembryonic protein
alpha 1-feto protein