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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-3077
DTSTART:20131203T180500Z
DURATION:PT1H0M0S
DTSTAMP:20260419T211855Z
LAST-MODIFIED:20130910T140029Z
LOCATION:4274 Chamberlin (refreshments will be served)
SUMMARY:What happens when policy comes before science?\, Chaos & Compl
 ex Systems Seminar\, Sherry Tanumihardjo\, UW Department of Nutritiona
 l Sciences
DESCRIPTION:Vitamin A is essential for multiple functions in mammals. 
 Without vitamin A\, mammals cannot grow\, reproduce\, or fight off dis
 ease. Because of its numerous functions in humans\, biomarkers of vita
 min A status are quite diverse. Assessment of liver reserves of vitami
 n A is considered the gold standard because the liver is the major sto
 rage organ. However\, this measure is not feasible in human studies. A
 lternative biomarkers of status can be classified as biological\, func
 tional\, histologic\, and biochemical. Before overt clinical damage to
  the eye\, individuals who suffer from vitamin A deficiency are plague
 d by night blindness and longer vision-restoration times. These types 
 of assessments require large population-based evaluations. Therefore\,
  surrogate biochemical measures of vitamin A status\, as defined by li
 ver reserves\, have been developed. Serum retinol concentrations are a
  common method used to evaluate vitamin A deficiency. Often policy is 
 set based on serum retinol concentrations. However\, they often do not
  respond to interventions and do not decline until liver reserves are 
 severely depleted. Therefore\, surrogate measures of liver reserves we
 re developed\, which include stable isotope and relative dose response
  tests.
URL:https://www.physics.wisc.edu/events/?id=3077
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