1Is alcohol consumption more prevalent in men or women?
Men
2What are some of the indirect impacts of drinking alcohol?
Increases money police spend on alcohol related violence; 8-10 times more likely to have accidents
3How many ml is in one unit of alcohol?
10 ml
4What is classified as a heavy drinker?
More than 14 units per week
5What is a moderate drinker?
1 unit per day for women or 2 units per day for men - not more than 14 units per week
6What is binge drinking?
8 or more units of alcohol in a single session (2 hours) for men; 6 or more units in a single session for women
7Where is alcohol primarily absorbed in the body?
Small intestine
8What is alcohol secondarily absorbed in the body?
Stomach
9Via what methods can alcohol be excreted from the body?
Liver - majority; Breath 2-5%; Sweat 1-2%; Urine 2-5%
10What are some factors that increase blood alcohol concentration?
Low food intake; Drinking speed; Dehydration; Female gender; Genetics; High body fat percentage
11Describe acetate metabolism.
Acetate is converted to acetyl co A via acety CoA synthase; It then enters the Krebs cycle where its used as a substrate for energy; Enhances acetylchline and melatonin production; Can also influence histone acetylation
12What are the key alcohol processing enzymes?
Alcohol dehydrogenase; Acetaldehyde dehyrogenase
13What is Asian Flush Syndrome?
A deficiency in ALDH2
14What is ALDH2 deficiency?
A deficiency in acetaldehyde dehyrogenase which leads to elevated levels of acetealdehyde which cane cause increased HR/BP, sweating and tremors
15What occurs in response to acetaldehyde toxicity?
Activation of HPA axis; Baroreceptor and Chemoreceptor reflex; Neuroinflammatory cytokines such as IL6, TNF A and IL-1B are released; Causes vasodilation ad rebound vasoconstriction
16Describe the microsomal pathway of alcohol metabolism.
CYP2E1 aids alcohol processing in the liver
17Describe the role of catalase in alcohol metabolism.
Breaks down hydrogen peroxide; Process occurs in the brain and other tissues; Oxidises ethanol in the presence of hydrogen peroxide
18What are FAEEs, what are their effect and what are their functions?
19How does ethanol effect key neurotransmitters?
Potentiates GABA - A via allosteric modulation; Increases frequency and duration of chloride channels opening
20What is the effect of ethanol on glutamate?
Suppresses glutamate receptors - non competitive antagonist
21How can ethanol lead to cognitive impairment?
Disrupts synatptic plasticity; Affects memory, decsion making and ability to focus
22What effect does ethanol have on the reward system?
Indirectly increases dopamine output towards meolimbic pathway
23What is the effect of ethanol on serotonin system?
Increases serotonin which contributes to mood elevating effects followed by strong rebound effects; Ethanol acts directly on serotonin receptors
24How does hyperstimulations of 5HT3 cause?
Nausea; Vomiting
25How does ethanol affect motor coordination?
Affects the purkinje cells in the cerebellum; Depresses cortical activity; Inhibits spinal reflexes; Suppreses proprioception
26How does alcohol affect sleep?
Initial sedation but then causes disrupted sleep archtircture; Can cause sleep apnea and breathing problems
27What are the neurophysiological affects of alcohol use disorder?
Neurodegeneration and brain atrophy; Loss of white matter integrity; Psychiatric disorders; Hepatic encephalopathy
28What effect does alcohol have on the digestive system?
Liver is severly affected - can lead to cirrhosis; Can also caise GORD, pancreatitits and gastritits
29What effect can a thiamine deficiency present in alcohol use disorder have?
Can lead to Wernicke’s Korsakoff; Can lead to liver damage
30How does alcohol affec the kidneys?
Inhibits ADH which leads to electrolyte disbalance; Contributes to elevated blood pressure; Damages glomeruli
31How does alcohol affect the cardiovascular systen?
Temproarily increases blood pressure; Vasodilation followed by rebound vasoconstriction; High risk of stroke; Hypertenstion; Cardipmyopthies
32How does alcohol affect reproductive hormoens?
Increases prolactin in both men and women; Lowers testosterone in men and lowers oxytocin in both men and women; Lowers IGF -1 levels
33What are the tetraogenic effects of alcohol?
Fetal alcohol spectrum disorders; Hyperactive behaviours, learing difficulties, various developmental delays
35How is alcohol use disorder treated?
Referral to a specialist; Medications such as Disulfiram, Nalrexone and Acamprosate