IMMUNE 139 Influenza and Ageing Flashcards
What are the 6 Geriatric Giants?
Confusion, not coping, incontinence, poor mobility, falls and collapse
What 5 domains do you need to check in a comprehensive geriatric assessment?
Medical, mental health, functional capacity, social circumstances and environment
How can pharmacological absorption change with ageing?
Achlorydia
Decreased hepatic blood flow = decreased first pass metabolism
How can pharmacological distribution change with ageing?
Body fat increase = increased distribution of lipophillic drugs
Decreased plasma binding = huge increase in bioavailability
How can pharmacological metabolism change with ageing?
Decrease activity of hepatic phase 1 metabolism
Decreased renal function
What are the two models of frailty?
Phenotype model and Cumulative deficit model
Describe the phenotype model of frailty
5 variables of weight loss, self reported exhaustion, low energy expenditure, slow gait speed and weak grip strength
3+ = frail
1/2 = pre-frail
Describe the cumulative deficit model of frailty
92 variable symptoms, signs or lab results giving a cumulative frequency index
What does a naked virus contain?
Nuceocapsid only - genome and the capsid
Describe receptor-mediated endocytosis
Virus attaches to membrane, membrane invaginates to form coated pit, this pinches off and is acidified to free nucelocapsid
How do DNA containing viruses transcribe?
Using hosts DNA dependant RNA polymerase
What sense is mRNA?
+ve
What type of viruses carry RNA polymerase?
SS -ve RNA and ds +/- RNA
Describe an acute infection?
rapid-onset, short lived
Describe a persistent infection
Remains in body, with or without symptoms