Miscellaneous/Public Health Flashcards
Which cells is COX1 found in?
All cells
What is the major product of COX1 in platelets?
Thromboxane A2
Which cells is COX2 expressed in?
Inflammatory cells
What is the major product of COX2?
Prostacyclins
What is the role of prostacyclins?
Involved in inflammation (vasodilation and inhibition of platelet aggregation)
Give four processes that COX1 is involved in.
- Normal function of GI tract (protective mucosa)
- Normal function of renal tract
- Platelet function
- Macrophage differentiation
Name the substrate for cyclooxygenase enzymes.
Arachidonic acid
Name a class of drug which are COX inhibitors.
NSAIDs (and aspirin)
Give two examples of hormones having permissive effects.
- Thyroid hormone increases receptors for epinephrine
- Cortisol has a permissive effect for glucagon
What is released in the short term stress response?
Epinephrine
Norepinephrine
What is released in the long term stress response?
Mineralocorticoids
Glucocorticoids
What structures show up with high intensity on a T1 weighted MRI scan?
Fat
Which structures show up with high intensity in a T2 weighted MRI scan?
Structures with high water content
What is a pheochromocytoma?
A neuroendocrine tumour of the adrenal medulla.
How is paracetamol usually conjugated for excretion?
Glucuronidation
Sulfation
How much paracetamol is normally converted to toxic NAPQI when it is metabolised?
10%
How is NAPQI usually metabolised for excretion?
By glutathione
Give two hormones or groups of hormones cleaved from POMC.
- ACTH
- Melanocyte Stimulating Hormones
What are the four quadrants, in relation to ethics?
- Medical indications
- Patient preferences
- Quality of life
- Contextual features
What are conscientious objections?
Moral claims that are based on an individual’s core ethical beliefs.
Opposition and refusal by a healthcare professional to provide certain treatments, because the individual believes that helping to provide those treatments would violate personal core ethical beliefs.
What are the four pillars in regards to ethics?
- Autonomy
- Beneficence
- Nonmaleficence
- Justice
What are the four things to consider when faced with an ethical dilemma, according to Seedhouse’s Ethical Grid?
- Ethical principles
- Ethical behaviour (duties of a doctor)
- Ethical consequences (wider nature of outcome)
- Real life constraints
Give four categories of risk factor for a condition.
- Clinical
- Lifestyle
- Unmodifiable
- Psychsocial
What is meant by ‘population attributable risk’?
The proportion of the incidence of a disease in the exposed and unexposed population that is due to the exposure.