Class#3 - Toxicology Flashcards
Junk food contains
Dioxins
Bread
Acrylamide
Chlorinated water
trihalomethane
Polyester bottled water
Antimony
Nail polish
Dibutyl Phtalate
POlyeruthane pillows
Isocyanates
Rubber
Nitrosamines
ADL determined by
1/100th of NOAEL
Discovered curare caused musc. relaxation
Sir Charles Waterton
Discovered curare blocks nerve impulse from CNS
Claude Bernard
1st to use curare in surgery
Dr. Harold Griffith in 1942 in Mtl
Sulfanilamide use and problem, b/c of who? Led to?
ATB for gonorrhea/strep troat, disolved in diethyl Glycol by Watkins. 1938 Food and Cosmetic Act
Sulfanilamide mixture killed?
107, mostly childs and 206 desabilities
Who connected death to diethyl glycol?
Frances Kelsey (McGill)
Hormesis?
Study Rx at very low doses
Super smal dose toxic eg?
Vit. A also BPA
Risk=
Exposure * Toxicity
Lima beans contains?
Cyanide
Cassava fruits contains?
Toxic dose of cyanide, lethal 10 000mcg
Puffer fish
Tetrodotoxins lethal 10mcg
Clostridium Botulism lethal dose
0.03mcg
Chocolote toxic to animals b/c
Cannot metabolize theobromine
Difficulties in toxicology?
Type of exposure, biochemical individualtity, Acute vs Chronic, Teratogenic effects, Toxins recognition, animal models
BBQ meat froms
Benzopyrenes
Inducing detox
Catechins in green tea, Glutathione-s-transferase in garlic, JOhn’s Wort stimulate P450
Cyclosporine problem with?
jonhns wort
Normal acéta metabolism?
Glucoronyl transferase
When too much acéta?
p450 makes acéta into molecule that causes liver damage. N-Acétylcystéine ->Gluthathione-s-transferase detox.
Enz. making bilirubin detox
Glucoronyl Transferase
1st non-sedating antihistamine, however with… accumulates.
Seldane, Ketoconazole
Allegra is?
Metabolic active form of seldane
What in grapefruit inhibits p450?
Furanocoumarins
Age cheese contains? bad with MAOI b/c?
Tyramine, increase BP if not broken down by MAO
Dioxins all contains?
Central oxygen with 4 cl
Toxic dioxin?
TCDD
dioxins come from?
Auxins, are plant growth hormone
TCDD byproduct of?
2,4,5 - T