A GUT FEELING ABOUT ENZYMES...
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A GUT FEELING ABOUT ENZYMES...
Devin B. Houston, Ph.D.President
Houston Nutraceuticals, Inc
AUTISM ONE CONFERENCECHICAGO, ILMAY 2008
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Devin Houston: BA, BS, PhD
•PhD Biochemist - enzyme research since 1981
•NIH-funded researcher at UVa and SLU med
schools
•Director of Research for enzyme manufacturer
•Enzyme product formulator and inventor
•Started own company in 2001
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Why we need “digestion”...
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Autism can disrupt digestion...
•Gut inflammation (injury) from mercury, yeast, toxins,
etc.
•Malabsorption syndromes
•Developmental delay
•Food allergies, other immune system problems
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Some foods are not well-tolerated in autism...
•Wheat (gluten)
•Dairy (casein)
•Soy protein (soymorphin)
•Certain carbohydrates
•Polyphenolic compounds, salicylates, oxalates
•Others
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Restoring gut health is important...
•Restore “good” flora of GI tract (pre- and pro-
biotics)
•Reduce inflammation (“leaky gut”) caused by
foods
•Eliminate potential future allergens
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Food restriction can be helpful...
•Gluten-free casein-Free diet
•Specific carbohydrate diet
•Low oxalate diet
•Body ecology diet
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...but diets may not be practical or possible.
•Nutritional insufficiency?
•Family lifestyles
•Cost and/or availability
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Enzymes may be an alternative to diets...
•Achieves same goal as diet: reduction of food offender
•Used as alternative to or with diets
•Targets only the offending food component: peptide, carb,
etc.
•Faster results observed
•Less costly, more convenient
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Observed effects of enzymes:
•Speech may start or improve
•Better focus, eye contact and attention
•Less stimming
•Improvements often noted by “blinded” third-parties
•Bowel movements improve
•More interest in trying other foods; increased weight
gain
•Positive benefits noted even in those already on diet
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What are enzymes?
ProteaseEnzyme
ProteinSubstrate
Activesite
Active Site
Amino acids
Substratebinds to
enzyme withinduced fit
Substrate isconverted to
products
Products arereleased
Enzymes keep working as
long as substrate is
available and conditions are favorable for
enzyme function.
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How do plant-based enzymes help?
•Break down foods more thoroughly
•Work in stomach before food moves into intestine
•Prevent formation of offending peptides
•Body gains more nutrition from food
•Better gut function, complements pancreatic function
•Some enzymes are anti-inflammatory
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Are enzymes safe?
•Plant-based enzymes used for centuries
•No record of any toxicity observed in animals or humans
•FDA considers these enzymes as food additives
•Safest supplements on the market
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Which enzyme(s) do I need?
Identify Problem
Behavioral GI related
Protein?
High ProteasePeptidase
Loose stools?
LactaseAmylase
GlucoamylaseGalactosidase
Constipation?
XylanaseGlucanaseCellulase?
Carbs?
LactaseAmylase
Glucoamylase
Phenols?
Xylanase
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Specific enzymes for specific problems...
•DPP IV peptidase for exorphin peptides
•Certain carbohydrases for firming stool
•Other carbohydrases for softening stool
•Some enzymes address phenols (natural
food colorings, flavors, some artificial
compounds)
•May help anti-fungal compounds work
better
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Exorphin peptides...
•Derived from food protein: casein, gluten, soy, blood
•Result from normal digestive process
•Are opiates: interact with opiate receptors, induce analgesia,
etc
•May act differently in those with ASD compared to “normal”
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Exorphin peptides...
•Reduction often produces observable positive effects in
behavior
•May be reduced through elimination diet, OR...
•May be prevented by appropriate enzyme use
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-tyr-pro-phe-pro-glu-pro-ile-
(1) Pepsin
(2) Elastase
Bovine Casein
Casomorphin
x-x-x-x-x-x-x-x x-x-x-x-x-x-x-x
Digestive formation of casomorphin
-tyr-pro-phe-pro-glu-pro-ile-
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Dipeptidyl peptidase IV (DPP IV)
•Only known enzyme to degrade casomorphin
•Found in the cells lining the interior GI tract
•DPP IV found in fungal enzyme blends (Houston, 1999)
•Very specific, but slow, enzyme•
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DPP IV
tyr-pro-phe-pro-glu-pro-ile
DPP IV effect on casomorphin
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phe-pro-
(1) Pepsin
Bovine Casein
DPP IVIn Stomach
Casein amino acid sequence affected by DPP IV
x-x-x-x- -x-x-x-xtyr-pro-
glu-pro-
ile
No casomorphin formed!
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Dipeptidyl peptidase IV (DPP IV)
•Only known enzyme to degrade casomorphin
•Found in the cells lining the interior GI tract
•DPP IV found in fungal enzyme blends (Houston, 1999)
•Very specific, but slow, enzyme
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(1) Pepsin
(2) Elastase
tyr-pro-phe-pro-glu-pro-ile
Bovine Casein
Casomorphin
Protease 4.5Protease 6.0
XX
Blocked peptide formation by multiple proteases...
-x-x-x-xpro-glu-
pro-ile
x-x-x-x-tyr-pro-phe-
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Enzyme dosing:
•Experimentation encouraged, no toxicity, safe dosing
•Try taking enzymes at beginning of meal
•Base dosing on size of meal, not body weight or age
•May be taken with most medications or other supplements
•Effective with first dose for digestive results
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Reasons to try enzymes...
•Results often seen faster than with diets
•Inexpensive
•No special medical attention or testing required
•May be a better fit to family’s lifestyle
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Contact information -
Devin Houston, PhD
O: 866-757-8627
Web: www.houstonni.com