Notes Flashcards

1
Q

Changes produced in the milk when making kefir

A
Lactose —> lactic acid
CO2 production
Increases free amino acids
Increase B vitamins + flavonoids
Produces anti microbial compounds
Produces polysaccharides
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2
Q

Therapeutic properties of kefir

A

Improve appetite, salivation, secretion of gastric acid and pancreatic enzymes

Good sources of free amino acids

Useful in travelers diarrhea and UTIs

Diuretic effect

Chol lowering effect

Normalizing effect on the bowel

Improve immune fxn (macrophages)

Improve resistance to catching URIs

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3
Q

Kefir microorganisms

A
Lactococcus lactis
Lactobacillus brevis
Lactobacillus rhamnosus 
Leuconostoc mesenteroides 
Candida kefir 
Torulaspora delbrueckii 
Saccharomyces cerevisiae 
Streptococcus lactis
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4
Q

Microorganisms involved in sauerkraut and kimchi

A

Leuconostoc mesenteroides

Lactobacillus plantarum (can reach 1010 CFU/g)

Lactobacillus brevis

+/- Streptococcus faecalis & Pediococcus pentosaceus

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5
Q

Benefits of sauerkraut and kimchi

A

Vit C content increase 600% after 7day ferment

Final product is low glycemic index = delay gastric emptying

Decrease levels of agricultural pesticides through the ferment process

Right in strain L. plantarum

Laxative effect

Contain glutaric acid and indolent-3-carbinol which improve estrogen metab.

Contains polyamines

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6
Q

Bacteria associated with Bulgarian yogurt (2)

A

Lactobacillus delbrueckii ssp. bulgaricus

Streptococcus theramophilus

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7
Q

Most common and best researched prebiotics (3)

A

Fructooligosaccharides (FOS)

Lactulose

Galactooligosaccharides (GOS)

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8
Q

3 types of FOS

A

Insulin

Oligofructose

Neosugar

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9
Q

What are the sizes / types of the 3 FOS?

A

Insulin - largest chain, extracted from chicory roots

Oligofructose - medium chain, from inulin using enzymatic hydrolysis

Neosugar - short chain, synthesized using Funchal organism that converts sucrose to FOS

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10
Q

Define probiotic

A

Live microorganism which when administered in adequate amounts confer a health benefit on the host

Viable, microbial agents that have been demonstrated to improve health

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11
Q

Define food sources of live and active cultures

A

Contain a diverse community of microbes that are not well-defined in terms of strain composition or stability

Lack specific therapeutic qualities

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12
Q

What bacterial species are responsible for taste, consistency, and smell associated with yoghurt

A

Lactobacillus delbrueckii ssp bulgaricus

Streptococcus thermophilus

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13
Q

4 Essential characteristics of probiotics

A
  1. Gastric acid and bile salt stability (e.g. survival through upper GIT)
  2. Ability to adhere to intestinal cells
  3. Ability to temporarily colonies the gut
  4. Clinically documented and validated health effects
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14
Q

Differentiate species from strain

A

Species, like dogs

Strains, like the breeds of dogs

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15
Q

T/F actions and qualities of probiotics are strain specific

A

True

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16
Q

How do probiotics work?

A

Car park theory - they work by competing with bacteria and fungi in the GI for limited space

They are:
• Antagonists (inhibitory, secrete anti-microbial substances, bind to viruses, inhibit gene coding and thus reduce expression of pathogen factors)
• Interact with immune cells (trains and balance immune system, increase gut sIgA production, modify allergens to less allergenic forms)
• Produce beneficial compounds: SCFA (create healthy colonic environ by decreasing pH = more acidic) and polyamines (restore normal sm intestinal architecture and upregulate digestive enzyme fxn)
• Anti-inflammatory: interact with toll-like receptors
• Modify gut transit time
• Decrease visceral hypersensitivity (a problem with IBS)
• Strengthen intestinal barrier
• Alter brain chem
• Alter metabolism

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17
Q

T/F take probiotics on an empty stomach to optimize survival through upper GIT

A

FALSE

Take probiotics with food to decrease gastric acid and optimize survival

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18
Q

2 factors of a “good” probiotic supplement

A

1 - characteristics of the strains contained in supplement

2 - adequate viability

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19
Q

Minimum effective dosage for probiotic

*memorize this

A

10^9 colony forming units/dose

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20
Q

What condition occurs rarely in people with short small intestines?

A

D-lactic acidosis

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21
Q

Probiotic for viral gastroenteritis

A

L rhamnosus GG

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22
Q

T/F Don’t use probiotics during antibiotic treatment because the antibiotics
will kill all the probiotic bacteria

A

F

research clearly shows that concurrent administration not only
significantly decreases AB-related side
effects, but also attenuates AB-associated damage to the gut microbiota

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23
Q

Changes produced in kefir milk

A

Lactose —> lactic acid

CO 2 production

Increased free amino acids

‘B’ vitamins & flavonoids increase

production of antimicrobial compounds–appear to be active
against some Gram-negative bugs (e.g., E. coli)

production of a polysaccharide – kefiran
— raises activity of proteolytic enzymes in GIT (rats & in vitro)
— oral consumption has demonstrated anti-tumour activity and improvements in immune status (rats)

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24
Q

Leuconostoc mesenteroides

Lactobacillus plantarum (can reach 1010 CFU/g)

Lactobacillus brevis

+/- Streptococcus faecalis & Pediococcus pentosaceus

Those microorganisms are involved in?

A

Sauerkraut and kimchi

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25
``` Lactococcus lactis Lactobacillus brevis Lactobacillus rhamnosus Leuconostoc mesenteroides Candida kefir Torulaspora delbrueckii Saccharomyces cerevisiae Streptococcus lactis ``` Those microorganisms are involved in?
Kefir
26
Vitamin C can increase by 600% after 7 day ferment of
Sauerkraut/kimchi
27
Sauerkraut/kimchi is rich in strains of
L plantarum
28
Sauerkraut/kimchi contain what compound that helps improve estrogen metabolism
Glucaric acid (glucarate) Indole-3-carbinol
29
Yeast ferment microbe
Saccharomyces cerevisiae
30
What are the bacteria that produce lactic acid as one of the main end-products?
``` Leuconostoc spp. Lactobacillus spp. Streptococcus spp. Pediococcus spp. Lactococcus spp. Bifidobacterium spp. ``` Involved in yoghurt, kefir, idli, sauerkraut, kimchi, dosa, olives, pickles
31
Tempeh is fermented by
Rhizopus oligosporus * not reliable probiotic food
32
Miso is fermented by
Aspergillus oryzae Saccharomyces rouxii *unlikely to have probiotic effect
33
Define PREbiotic
A nondigestible food ingredient that beneficially affects the host by selectively stimulating the growth and/or activity of one or a limited number of bacteria in the colon.
34
4 characteristics of prebiotics
1. Neither be hydrolysed nor absorbed in the stomach or small intestine; 2. Act as a selective substrate for one or a limited number of potentially beneficial commensal bacteria in the large intestine; 3. Change the colonic microflora ecosystem towards a healthier composition; and 4. Induce luminal or systemic changes that improve the health of the host.
35
What are prebiotic compounds
FOS GOS Lactulose Lactitol β-glucoolimers Raffinose Xylooligosaccharides
36
Difference between colonic foods and prebiotics?
PREbiotics very specific | Colonic foods lack specificity.
37
Examples of colonic food
Slippery elm Pectin Psyllium husk Guar gum Green tea Dark cocoa Almonds Larch aabinogalactans
38
3 types of FOS, their size, and how their extracted
Inulin - largest; extracted from chicory roots Oligofructose - medium; from inulin using enzymatic hydrolysis Neosugar - short; fungal organism that converts sucrose to FOS
39
Foods that contain FOS
``` Onion Artichoke Rye Dandelion Barley Asparagus Leek Garlic Banana Wheat Chicory Salsify Burdock Ya on ```
40
Uses of FOS
Enhance bifidobacteria Enhance immunity Absorption of calcium Improved bioavailability of phytoestrogens Efficacy of medicinal herbs, esp post-antibiotic therapy Hyperlipidemia Damaged intestinal or colonic mucosa Tx atopic eczema and prevent atopy development Promote satiety
41
Optimal dose of FOS | * memorize
10g/day of FOS (4-40g/day have been shown to have bifidogenic effect) Dosages of <3g/day are unlikely to cause sig alterations in GIT
42
Lactulose is semi-synthetic disaccharide composed of the monosaccharides (2)
Fructose | Galactose
43
Uses of lactulose
Enhances growth of lactobacilli AND bifidobacteria Candidiasis Constipation Prevention of colon cancer Damaged Intestinal or Colonic Mucosa - trophic and healing effects on the GIT Alcoholic Liver disease Lowered immunity Colon acidifier Endotoxemia Prevention UTI Tx of atopic eczema and prevent atopy Tx UC
44
Optimal dose for lactulose | *memorize
10g, 2x/day | 3-20g/day
45
GOS is a nondigestible carb produced from lactose using
β-galactosidases β-linked glycosides are resistant to digestion by host-secreted enzymes in the small intestine - reach the terminal ileum & colon intact - become available to those members of the colonic microbiota metabolically equipped to metabolize these specific oligosaccharides
46
Uses of GOS
Enhances growth of lactobacilli AND bifidobacteria Constipation Prevent atopic disease Increased resistance to infections IBS Calcium absorption Metabolic syndrome Prevent GIT infections Prevent Travellers diarrhea
47
Bifidogenic effect of GOS in doses of: *memorize
2.5-15g/day
48
Tx of IBS - dosage of GOS *memorize
3.5G/day
49
Prevention of travellers diarrhea - dosage of GOS *memorize
2.6g/day
50
Enhance calcium absorption - dose of GOS *memorize
5-20g/day
51
Define colonic food
Foods entering the colon and serving as substrates for the endogenous colonic bacteria, thus indirectly providing the host with energy, metabolic substrates and essential micronutrients.
52
Colonic foods include (general)
``` Resistant starch Plant cell wall polysaccharides Hemicelluloses Pectins Gums ```
53
Dosage of larch arabinogalactans (LA)? *memorize
5-30g/day
54
What are synbiotics
Contain both probiotic and PREbiotic agents
55
Synbiotics are supposed to (30)
1) enhance the survival of the probiotic bacteria through the upper GIT, 2) improve implantation of the probiotic in the colon, and 3) have a stimulating effect on the growth and/or activities of both the exogenously provided probiotic strain(s) and the endogenous inhabitants of the bowel
56
Synbiotics must meat 4 criteria
1) well-characterized and researched probiotic strains 2) “prebiotic” substance meets requirements to be considered prebiotic 3) “prebiotic” demonstrates enhance growth of exact probiotic strain in the product 4) both agents included in therapeutic dose
57
Disappearing microbiota hypothesis. The reason why things are changing is:
``` Clean drinking/bathing water More C-sections More pre-term and infant AB usage Widespread AB use through life Reduced breastfeeding rates Increased use of antibacterial soaps, creams, sprays Early childhood PPI use Dysbiosis-inducing and/or restrictive diets PPI exposure in life and pregnancy ```
58
Medications that induce (8)
``` PPI Chemotherapy Metformin NSAIDs Atypical antipsychotics Statins Polypharmy in elderly Radiotherapy ```
59
Food additives that induce dysbiosis
Artificial sweeteners=sucralose, saccharin Dietary emulsifiers=carboxymethylcellulose, polysorbate-80 Environmental chemicals=glyphosate High protein-low carb Keto diet SAD
60
Natural medicines capable of inducing dysbiosis
Citrus seed extract High-dose and long-term berberine Enteric-coated essential oils Biofilm busting products
61
Strategies to improve microbiota diversity
``` PREbiotic daily Diversity of plants Live on a farm/organic gardening Raw fruits, veggies, nuts, seeds Exercise PRObiotic supplants, ferments Fecal microbial transplant Resistant starch-rich foods ```
62
Acacia fibre dosage | *memorize
At least 10 g/day
63
Lactulose (syrup) dosage | *memorize
at least 5ml/day
64
GOS dosage | *memorize
at least 3g/day
65
FOS/inulin dosage | *memorize
at least 3g/day
66
Partially-hydrolysed guar gum dosage *memorize
• at least 5g/day
67
Polyphenol-rich foods
Fruit-blk elderberries, currants, blueberries, cherries, strawberries, blackberries, plums, raspberries, red apples, black grapes Nuts and seeds-flaxseed meal, chestnuts, hazelnuts, pecans, black tahini Vegetables-purple carrots, red carrots, purple/red potatoes, red cabbage, spinach, red onions, broccoli, carrots, red lettuce Grains-red&black rice, quinoa, whole grain rye bread Other-black olives, olive oil
68
FOS foods
``` Asparagus Banana Barley Burdock Chicory Dandelion Garlic Artichoke Leek Onion Rye Salsify Wheat Yacon ```
69
GOS foods
``` Beetroot Borlotti beans Brocc Chick peas Fennel Haricot beans Lentils-green, red Lima beans Oats Onion Radish Red kidney beans Rye bread Soy beans Wheat ```
70
Prebiotic like foods
``` Brown rice Carrots Black currants Dark cocoa Almonds Green tea ```
71
4 types of resistant starch-rich foods
RS1 - grains, seeds, legumes RS2 - starchy foods, raw potatoes, plantains, green bananas RS3 - when root veggies and whole grains are cooked and cooled. Also, legumes RS4 - human-made via chemical process
72
3 enterocytes
Bacteroides - associated with diets rich in animal protein and saturated fats Prevotella - plant-based diet Ruminococcus - most prevalent now
73
benefits of colonic microflora
``` Modulate immune system Enhance GIT motility and function Improved digestion and nutrient absorption Produce B and K vitamins Xenobiotic metabolism Colonization resistance Production of SCFAs Production of polyamines Weight management Dysbiosis ```
74
3 main SCFAs
Butyrate Propionate Acetate
75
The more protein consumed the more (4) produced
Insoles Phenols Hydrogen sulphide Ammonia
76
Diet high in fat increases (2) populations and decreases (1) population
Increase: E.coli.& Desulfovibrionaceae; Decreases: Bifidobacteria
77
Diets high in milk fat increase the rare gram-negative bacterium
Bilophila wadsworthia
78
How to Dx dysbiosis
Mostly symptom based picture plus a recent history: AB, high stress, dietary risk factors, suffer from 1+ diseases
79
How to Tx dysbiosis
PREbiotics Probiotics Colonic foods Antimicrobial herbs
80
Probiotics for dysbiosis (2)
Bifidobacteria lactis HN019 | Lactobacillus rhamnosus GG
81
Herbs that have substantial selectivity of action GIT antimicrobials (3) for dysbiosis tx
Allium sativum -garlic Pomegranate husk Green tea extract
82
Last resort, broad-acting, potentially microflora-damaging option for dysbiosis tx (3)
Berberine-rich herbs Enteric-coated essential oils Antibiotics
83
Causes of GERD
``` LES incompetence Delayed gastric emptying Impaired esophageal acid clearance Hiatal hernia Decreased salivation ```
84
Contributing factors of GERD
``` Genetic disposition Medications Smoking Pregnancy Psychological stress High BMI ```
85
What types of food/drink causes increased acid secretion in GERD (2)
Alcohol | Coffee
86
What types of food /drink causes reduced LES pressure in GERD (4)
Alcohol Chocolate Coffee Fatty meals
87
What types of food /drink causes transient LES relaxation in GERD (2)
Alcohol | Peppermint essential oil
88
What types of food /drink causes slow gastric emptying in GERD (2)
Alcohol | Fatty food/meals
89
What types of food /drink impairs esophageal mobility in GERD (1)
Alcohol
90
Food/drink capable of triggering esophageal pain in GERD (4)
Tomato/citrus juice Soft drinks Spicy food Alcohol
91
Define FODMAP
``` Fermentable Oligosaccharides Disaccharides Monosaccharides And Polyols ```
92
The presence of ___ infection in stomach plays a protective role against dev of the most severe forms and complication of GERD incl Barrett’s esophagus
H pylori
93
TX heartburn pain in GERD
GI demulcents
94
TX for GERD (add)
``` D-limonene (demulcent) Melatonin Meadowsweet (demulcent) Chamomile (demulcent) Licorice (demulcent) Comfrey leaf (demulcent) Aloe vera (demulcent) Calendula flowers (demulcent) Curcumin ```
95
TX for GERD (avoid)
Alcohol Chocolate Caffeine Fatty foods
96
TX for GERD in infants
Diary free diet Carob powder Althaea radix powder
97
Vitamins to prevent esophageal cancer
Zinc | B-carotene
98
Speed gastric emptying - probiotic
Lactobacillus reuteri protectis
99
Etiology of peptic ulcer disease (PUD)
Drug use: oral corticosteroids, aspirin, NSAIDS Lifestyle: stress, smoking, alcohol abuse, low dietary fiber
100
Foods and drinks to eradicate H pylori
``` Green tea - inhibits growth Cranberries - goes dormant Cranberry juice - not as good as AB Dark grapes Berries 90% eradication ```
101
Probiotics to eradicate H pylori
Lactobacillus acidophilus NAS - 43% Lactobacillus reuteri MM53 +omeprazole 60% Lactobacillus acidophilus LA5 & bifidobacterium lactis Bb12 - decreased density Saccharomyces cerevisiae var boulardii biocodex 12%
102
Pre-AB therapy probiotic for H pylori
Lactobacillus acidophilus LA5 & bifodobacterium lactis Bb12
103
With AB therapy probiotic for H pylori
Lactobavillus reuteri MM53
104
Herbs to eradicate H pylori
Rheum emodi - rhubarb Nigella sativa - ground seeds Brocc sprouts Mastic gum
105
Vitamins for eradicating H pylori
Vitamin C and E Zinc carnosine Lactoferrin
106
Promote ulcer healing
``` Melatonin L-tryptophan Zinc carnosine Cabbage juice Mastic gum Licorice ```
107
What supplement decreases thickness and viscosity of mucous layer facilitating physical contact between natural anti-microbial and H pylori?
N-acetyl Cysteine (NAC)
108
Ddx wheat allergy, celiac disease, gluten sensitivity
Wheat allergy - IgE antibodies CD - autoimmune mediated Gluten sensitivity - IgG antibodies
109
Tx for wheat allergy
Avoid wheat only
110
TX for celiac disease
Avoid gliadin (wheat, spelt, kamut, triticale), secalin (rye), horedin (barley), avenin (oats) peptides because they resist digestion in the upper GIT Lifelong strict avoidance of all gluten-containing foods and drinks
111
TX for gluten sensitivity
Gluten-free diet Lifelong strict avoidance of all gluten-containing foods and drinks
112
Skin condition possible in CD
Dermatitis herpetiformis 10-20% patients Symmetrical rash on elbows, knees, back, buttocks
113
Gold standard test for CD
Small bowel biopsy
114
How much and long does patient need to consume gluten before testing?
4 slices bread (2 for children) per day for 6 weeks
115
Tests for CD
Gold standards ⭐️ small bowel biopsy Biocard celiac test Anti-gliadin antibody (AGA) IgA Intestinal permeability lactulose:mannitol ratio
116
Other indicators of “hidden” CD
Unexplained raised liver enzymes: AST, ALT Unexplained Iron deficiency Delayed puberty Infertility
117
Dx gluten sensitivity
Serum zonulin Anti-gliadin Antibody (AGA) IgG Trial of GF diet and subsequent open/blinded challenge
118
CD Tx
Nutritional supplementation: ‣ Fe, B12, homocysteine, serum 25-hydroxyvitamin D ‣ Zinc, selenium, calcium, magnesium, vitamin B6, vitamin e, vitamin k ‣ Hookworm infection ‣ Gluten-digesting enzymes (glutenases) e.g. germinated barley and sphingomonas capsulatum Probiotics: ‣ Bifidobactrium lactis ‣ Bifidobacteria infantis (Natren strain) ‣ Saccaromyces cerevisiae var boulardii (Biocodex strain) Tumeric, curcumin L-glutamine Prebiotics CLA
119
One of 3 major dietary monosaccharides (along with glucose and galactose) is:
Fructose Ingested in 2 forms: free fructose, sucrose
120
Fructose is absorbed via
Carrier mediated facilitated diffusion = GLUT5
121
Define fructose malabsorption (FM)
occurs when the amount of fructose consumed is more than the small intestines can metabolise and absorb
122
What is the threshold of FM?
15g
123
DX fructose malabsorption
Breath hydrogen testing + methane Blinded fructose tolerance test Empirical trial of low-fructose diet
124
2˚ fructose intolerance due to (5)
chemotherapy, radiotherapy, giardiasis, viral and bacterial gastroenteritis
125
S&S of fructose malabsorption
GI, fatigue, HA, diminished concentration, myalgia, arthralgia, depression
126
When ingested regularly, adaptation occurs with [this condition]
Lactose intolerance NOT fructose malabsorption
127
TX for fructose malabsorption
Reduce fructose Eliminate sorbitol and other sugar alcohols Avoid: fruit, dried fruit, sweeteners, drinks, sauces, others OK food: ‣ Fruit: Papaya, avocado, banana, blackberry, blueberry, coconut, cranberry, fig, grapefruit, jackfruit, kiwifruit ‣ Sucrose in mod, glucose, maple syrup, molasses Low FODMAP diet, which is not great, so to manage negative microbiota impact add: GOS, PHGG (5G or 10g) Add glucose which enhances fructose absorption and upregulate GLUT2 activity Add amino acids/protein with fruit consumption
128
Fructose malabsorption is associated with decreased (3) levels/concentrations
Tryptophan Folate Zinc
129
Fruit that is OK in FM
avocado, babaco, banana, blackberry, blueberry, coconut (grated and dried), cranberry, fig (fresh), grapefruit, jackfruit, kiwifruit, kumquat, lemon, lime, mandarinβ, orange (Valencia is higher in fructose), passionfruit, pepino, pineappleβ, rhubarb, tamarillo, tangelo, raspberryβ, strawberry
130
Problematic vegetables, grains, supplements for fructose malabsorption
Grains – wheat Vegetables – asparagus, globe artichoke, garlic (small doses usually OK), Jerusalem artichoke, leek, onion, shallot, spring onion, zucchini Other – fructooligosaccharide (FOS), lactulose, larch arabinogalactans, and inulin supplements
131
Issues with low FODMAP diet
Eliminates many healthy foods | Negative effects on microbiota
132
Attenuate negative microbiota impact from low FODMAP with:
GOS | PHGG
133
Giardiasis is an Intestinal infection caused by the protozoan parasite
``` Giardia lamblia (aka G. intestinalis or G. duodenalis) ```
134
The MC protozoan infection in humans
Giardiasis
135
Sx of giardia
``` Ab pain Nausea Lack of appetite Diarrhea Vomiting Flatulence Burping Tiredness ```
136
TX goals for giardiasis (3)
1. inhibit G. lamblia growth, replication and/or attachment to enterocytes 2. promote giardial-defence mechanisms 3. minimise unpleasant symptoms
137
2 specific TX for giardiasis
Wheat germ - 60% reduction Insoluble fiber
138
TX for giardiasis - probiotics (4)
Lactobacillus plantarum 299v L acidophilus LA5 and L rhamnosus GG Saccharomyces cerevisiae var boulardii (Biocodex strain) Saccharomyces cerevisiae (Biocodex strain)
139
Overall general dietary recommendations for TX Giardiasis (5)
Eat whole foods, high fiber Reduce fat Minimize lactose (<12g) and simple sugars Consume flavonoid-rich food Blueberries are good
140
Herbs for giardiasis
Psidium guajava leaf - guava leaf Garlic Berberine Mangifera indica leaf - mango Plantago major leaf - plantain Punica granatum husk - pomegranate
141
Lactose is composed of (2)
Galactose and Glucose
142
Define lactase nonpersistence
Indicates the brush border lactase activity is a small fraction of the infantile level
143
Define lactose malabsorption
Indicates that a sizable fraction of a dosage of lactose in not absorbed in the small bowel and thus is delivered to the colon
144
Define lactose intolerance
Indicates that the malabsorbed lactose produces symptoms (linked to the quantity of lactose)
145
Who does lactase persistence happen in?
Northern European descent Lactase persistence was rare in Northern Europeans prior to diary farming
146
Humans lose their capacity to digest lactose as they age because
Genetically programmed reduction in lactase synth 70% of the world has lactase nonpersistence, but not all are lactose intolerant
147
T/F All people who have lactose malabsorption experience lactose intolerance
False Not every malabsorbed has symptoms of intolerance
148
Define secondary lactose intolerance
Loss of lactase activity in people with lactase persistence or infants. Occurs as a result of any trauma or illness that damages the microvilli of the small intestine Deficiency that is usually reversible with recovery from the disease E.g. intestinal infection, CD, giardiasis, gastroenteritis, radiotherapy, chemotherapy, rotavirus gastroenteritis
149
What is the single dose of lactose that produces no or only minor Sx *memorize
12g >80% lactose maldigesters report Sx after 50g lactose. Single dose >18g associated with greater risk of S&S
150
Labs/test of lactose intolerance (3)
Breath testing-analyze excreted gases Genotyping Lactose challenge ⭐️ may be the gold standard
151
Lactose intolerance - management
Low lactose diet | Lactase enzymes
152
What foods have high calcium?
``` Fortified soy/rice/almond milk Spinach Sardines w/bones Chinese cabbage Tahini Tofu Almonds Figs Molasses ```
153
Lactase enzymes derived from yeast (2)
Kluyveromyces lactis OR | Asperigillus oryzae
154
Probiotics for lactose intolerance (3)
Lactobacillus casei Shirota and Bifidobacterium breve Yakult Lactobacillus acidophilus LA5
155
T/F continued daily ingestion of lactose results in adaptation
True
156
TX 2˚ lactose intolerance
``` Low lactose diet Supplemental lactase Appropriate probiotic strain supplementation Lactulose supplementation Lactose colonic adaptation ```
157
Best strain for 2˚ lactose intolerance
Saccharomyces cerevisiae var boulardii Biocodex
158
Define SIBO
Small ingestion bacterial overgrowth Heterogenous syndrome characterized by increase number and/or abnormal type of bacteria in the small bowel >10^5 CFU of bacteria/mL
159
2 types of SIBO
Gram-positive bacteria from upper respiratory tract and oral cavity - failure of gastric acid barrier Colonic/Coliform bacteria - failure of intestinal clearance / small bowel anatomic alterations
160
Risk factors for SIBO
``` PPI Narcotics Opiates Gastrectomy Chronic pancreatitis Dysmotility AIDS Diabetic neuropathy Elderly >75yo Small bowel intestinal disorders (causing dismobility) Large bowel disorders ```
161
What is 1 way to DX SIBO that has a lot of false positives/false negatives
Lactulose breath test It measures hydrogen+methane after lactulose ingestion. Poor specificity, poor sensitivity. There is no gold standard for testing for SIBO
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What is the imperfect gold ⭐️ standard for Dx of SIBO?
Jenjunal aspirate and culture
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Other Dx testing for SIBO (2) *profs prefered testing
Glucose breath test | Triple sugar testing * profs prefered testing
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TX of SIBO
``` Remove contributing factors (PPI, narcotics) Anti-microbial therapy (ABs) Diet? Pro/PREbiotics? Nutritional supplements Sm intestinal motility enhancers Gut healing agents ```
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Anti-microbial herbal medicine for SIBO (1)
Enteric-coated Mentha piperita oil - peppermint oil
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Herbs agains streptococcus spp (6)
``` Punica granatum (fruit rind) - pomegranate Allium sativum - garlic Syzygium aromaticum oil - clove Thymus vulgaris oil - thyme Origanum vulgare oil - oregano Berberine ```
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Herbs agains e.coli (8)
``` Punica granatum (fruit rind) tea polyphenols Allium sativum (fresh best) Origanum vulgare oil propolis Plantago major Syzygium aromaticum oil Thymus vulgaris oil ```
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Herbs against bacteroides spp (4)
``` tea polyphenols Allium sativum Syzygium aromaticum oil Thymus vulgaris oil ```
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Herbs against clostridium spp (9)
``` Origanum vulgare oil, Trachyspermum copticum oil, Mentha piperita oil, Allium sativum (fresh), Coptis chinensis, Punica granatum (fruit rind), tea polyphenols, Thymus vulgaris oil Syzygium aromaticum oil ```
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Herbs against staphylococcus spp (7)
``` Punica granatum (fruit rind) tea polyphenols, Allium sativum, Coptis chinensis (berberine) Thymus vulgaris oil Syzygium aromaticum oil, Origanum vulgare oil ```
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Herbs against klebsiella spp (5)
``` Punica granatum (fruit rind), Allium sativum, Origanum vulgare oil and infusion, Thymus vulgaris oil, Syzygium aromaticum oil ```
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Given that you likely don’t know the species involved in SIBO, chose the herbs for the MC microbes first (3) before those less selective ones (3):
Punica granatum (fruit rind) Allium sativum – fresh is best; or high allicin Green tea polyphenols Origanum vulgare oil Thymus vulgaris oil Syzygium aromaticum oil
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Diet Tx in SIBO?
No dietary approach is clinical prevent
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Probiotics for SIBO (3)
Lactobacillus rhamnosus GG Lactobacillus plantarum 299v ``` Lactobacillus casei Shirota, Bifidobacterium breve Yakult, and GOS (in combination) ```
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PREbiotic for SIBO (3)
Lactulose PHGG (Partially-hydrolysed guar gum) GOS
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Small intestinal motility enhancers for SIBO (6 suggestions)
Lactulose Synbiotics: L. rhamnosus GG and B. lactis Bb12 with inulin Probiotic strain: 1) Bifidobacterium lactis DN-173010 2) Bifidobacterium lactis HN019 Reduce stress Minimise snacking Iberogast Ginger
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Gut healing agents for SIBO Tx (4)
Lactulose PHGG Saccharomyces cerevisiae var boulardii Biocodex L-Glutamine
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Digestive aids for SIBO (3)
Betaine HCL Digestive enzymes at meals Herbal bitters
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Define Crohn’s disease
Chronic inflammatory bowel disease
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Crohn’s disease results from
Inappropriate inflammatory response to intestinal microbes in genetically-susceptible host
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S&S of Crohn’s disease that is different from others
Rectal bleeding Abdominal tenderness or masses
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Tests to DX Crohn’s
Stool tests Colonoscopy and endoscopy Imaging (CT, barium xray) ESR and CRP
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What is the main objective in Tx of Crohn’s disease
Mucosal healing
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Tx for mucosal healing for Crohn’s disease (3 total, 1 is probiotic)
Glutamine Whey protein Saccharomyces cerevisiae var boulardii CNCM I-745
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Lifestyle recommendations for crohns
Stop smoking | Reduce oxidative stress
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How to Reduce oxidative stress in CRohns
``` NAC Vit E + C Dietary antioxidants Eliminate alcohol Yeast free diet Avoid Lactose Avoid fructose Low FODMAP diet Semi-vegetarian ```
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What are Dietary antioxidants?
Proacthocyanidins: dark-coloured grapes, red rice Anthocyanins: blueberries, bilberries, black currants, raspberries, black rice, cranberries, purple/blue corn Chlorophyll: leafy greens (silver beet, English spinach, watercress, lettuce), celery Carotenoids: Butternut pumpkin (squash), carrots, sweet potatoes, tomatoes, red capsicums (peppers)
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Nutritional supplementation for crohns
Zinc | Vit D
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Probiotics with negative results in crohns
Lactobacillus rhamnosus GG Lactobacillus johnsonii LA1
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PREbiotics in crohns
FOS and lactulose didn’t provide significant improvement
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Omega-3 FA for crohns?
Yes
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Herbal medicine for crohns (4)
Wormwood Turmeric Boswellia Mastic gum
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MC cause of severe, dehydrating gastroenteritis among children worldwide
Rotavirus gastroenteritis
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Prevention of rotavirus - probiotics (2)
Lactobacillus rhamnosus GG Lactobacillus reuteri MM53
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Prevention of rotavirus - food (4)
Carob powder Cooked green bananas Avoid gluten Avoid juices and soft drinks
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Prevention of rotavirus - herbs
Potentilla tormentil - rose family Tannin-rich herbs (cinn, blackberry/raspberry) Nutmeg
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Post-gastroenteritis probiotic (1)
Saccharomyces cerevisiae var boulardii Biocodex
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Define IBS
Functional GI disorder characterized by altered bowel habit and ab pain
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How to DX IBS
Dx of exclusion
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Rome IV criteria
Recurrent ab pain 1 day per week in the last 3 months associated with 2+ of the following: 1. Related to defecation 2. Change in freq of stool 3. Change in form of stool
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PREbiotics for IBS (1)
GOS
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Probiotics for IBS (1)
Lactobacillus plantarum 299v
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In C-IBS, Tx to normalize bowel habit (3)
Fiber Fluid Exercise
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Fiber for C-IBS (6)
``` Ground flaxseed Slippery elm powder Psyllium husk Oat bran Chia seeds Pectin ```
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C-IBS probiotic that speeds colonic transit time
Bifidobacterium animalis DN-173 010 Bifidobacterium lactis HN019
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3 GI Sx that have neg impact on quality of life for IBS
Straining at stool Abdominal pain Abdominal bloating
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Manage GIT Sx for IBS - abdominal pain and bloating
``` Cardamom Caraway seeds Peppermint Spearmint Dill seeds Fennel seeds Mandarin peel Ginger Chamomile Lemon balm cramp bark ```
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Manage GIT Sx for IBS - decrease gut inflammation and visceral hypersensitivity
Licorice root Chamomile Turmeric Melatonin
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These are SX not part of IBS
Bloody stools Weight loss Fever Family Fx colon cancer
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MC form of IBD
UC
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Lifestyle factors that increase risk of UC
``` Cigarette smoking Med use (AB) Insufficient duration breastfeeding SAD diet Vitamin D deficiency Stress NSAID use Alcohol intake ```
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Primary Sx for US
Diarrhea with blood
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Dx tests for UC
Colonoscopy and biopsy Supportive: elevated CRP, ESR, fecal lactoferrin and calprotectin
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Dietary advice for UC
``` Decrease n-6 fats Increase n-3 fats Antioxidant rich diet Wheatgrass juice Psyllium seeds - increase butyrate ``` Eliminate alcohol, dietary emulsifiers, packaged junk foods, white bread, sulphuric dried fruits, dehydrated veggies, packaged fruit juices, animal protein (putrefaction), dairy, potato-family
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N-6 fats
``` Margarine Sunflower Corn Safflower Soybean Cottonseed Sesame Peanut oils ```
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N-3 fats
``` Sardines Salmon Herring Ocean trout Mackerel Mullet True all a Arctic char Tuna Tailor Flaxseed oil, ground chia seeds, ground flaxseed Walnuts, hemp seeds ```
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PREbiotic for UC (2)
Lactulose | FOS
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UC Tx - supplements
``` Vitamin D Aloe vera gel Boswellia Serratus Turmeric Silymarin -extracted milk thistle Andrographis Bilberry ```