Chapter 9: Vitamin B5 (Pantothenic Acid) Flashcards
other names
panthotheine
pantothenol
antimitochondrial factor
pantothenic acid b5
pantothenic acid b5 - chemistry
soluble in _____
water
pantothenic acid b5 - chemistry
stable in _____ and in _____
moist heat and neutral solutions
pantothenic acid b5 - chemistry
easily destroyed by
dry heat
pantothenic acid b5 - chemistry
unstable in
acid and alkali
pantothenic acid b5 - chemistry
pure form is a yellow oil that has never been crystalized
pantothenic acid
pantothenic acid b5 - chemistry
_____ is a synthetic derivative in crystalline form; used in nutritional supplements
calcium pantothenate
pantothenic acid b5 - chemistry
omega-methylpantothenic acid, pentoyl taurine, and phenylpantothenate are what
antagonists
pantothenic acid b5 - absorption, transport, utilization
occurs as part of
coa
pantothenic acid b5 - absorption, transport, utilization
released from the coenzyme for absorption in the
liver
pantothenic acid b5 - absorption, transport, utilization
resynthesized into coa in the presence of atp and
cysteine
pantothenic acid b5 - absorption, transport, utilization
about _____ is absorbed
half
pantothenic acid b5 - absorption, transport, utilization
excreted in the urine as
pantothenic acid
pantothenic acid b5 - functions
as a component of coa and as the _____ on acyl-carrier protein needed in the fatty acid metabolism
involved in acetylation reactions
coa acts as carrier of acetyl groups
acetyl groups are removed to form a compound (acetyl-coa) that can donate its acetyl group in another compound
prosthetic group
pantothenic acid b5 - functions
as part of coa, pantothenic acid functions in:
production of energy from cho, chon, and lipids
-
pantothenic acid b5 - functions
as part of coa, pantothenic acid functions in:
_____ synthesis
fat
pantothenic acid b5 - functions
as part of coa, pantothenic acid functions in:
formation of the_____ group of hemoglobin
heme
pantothenic acid b5 - functions
as part of coa, pantothenic acid functions in:
synthesis of _____ and other steroid hormones
cholesterol
pantothenic acid b5 - functions
as part of coa, pantothenic acid functions in:
synthesis of _____ needed in nerve impulse tranmission
acetyl choline
pantothenic acid b5 - functions
as part of coa, pantothenic acid functions in:
metabolism of
branched chain amino acids
pantothenic acid b5 - functions
important for maintenance and repair of tissues and cells of the _____ and ____
skin and hair
pantothenic acid b5 - functions
helps in
healing wounds
pantothenic acid b5 - functions
form of b5 that normalized blood lipid profiles
pantheine
pantothenic acid b5 - deficiency
_____ and symptoms involve a general failure of all body’s systems
symptoms: vomiting, intestinal distress, insomnia, fatigue, and “burning feet” syndrome
deficiency can be artificially created by giving individuals a diet deficient with the vitamin
rare
pantothenic acid b5 - toxicity
_____ have been reported with high intakes of vitamin b5, however some experience occasional diarrhea
no adverse effects
pantothenic acid b5 - recommended intake
increased for? (3)
alcoholics and those with diabetes and ulcerative colitis
pantothenic acid b5
liver, kidneys, chicken meat, beef, egg yolk, milk, fish, whole grain cereals, potatoes, tomatoes, broccoli, and mushroom
distributed widely in plant and animal foods, thus deficiency is unlikely
pantothenic acid food sources
