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Pharmacology 2
Cytotoxic agents, cardiovascular, renal, diabetes,
126
Pharmacology
Undergraduate 2
10/27/2014

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Term
what are the normal post-prandial glucose levels?
Definition
6-8 mmol/L
Term
what are the normal fasting glucose levels?
Definition
4-6 mmol/L
Term
blood sugar level of hypoglycemia
Definition
< 4 mmol/L
Term
symptoms of hypoglycemia - brain
Definition
shakiness, diziness
nervousness, confusion
headache
Term
symptoms of hypoglycemia - tissues
Definition
hunger
tingling extremities
Term
symptoms when blood glucose levels <2 mmol/L
Definition
fainting
potentially death
Term
blood sugar level of hyperglycemia
Definition
>8 mmol/L
Term
symptoms of hyperglycemia (5)
Definition
1) increased glucose excretion through kidneys (frequent urination, excessive thirst)
2) fatigue, weakness, hunger, blurry vision (too little glucose in the tissues)
3) tissue damage
4)ketoacidosis
5) potentially death
Term
what does the pancreas do for glucose regulation
Definition
detect changes in glucose level
Term
what does the blood do for glucose regulation
Definition
send out hormone message signals
Term
what do the peripheral tissues do for glucose regulation
Definition
initiate glucose correction (uptake or release)
Term
what do the alpha cells of the pancreatic islet do
Definition
during hypoglycemia
secretes glucagon
targets hepatocytes
increase glucose release, synthesis and gycogen breakdown; decreases glucose storage
Ultimately increase glucose levels
Term
what do the beta cells of the pancreatic islet do
Definition
during hyperglycemia
secrete insulin
affects liver, fat and skeletal muscle
increase glucose uptake, increase glucose storage and utilization
decrease glycogen breakdown and glucose synthesis
ultimately decrease glucose levels
Term
type 1 diabetes mellitus
Definition
autoimmune-mediated beta-cell destruction leading to reduction and eventual loss of insulin secretion
Term
type 2 diabetes mellitus
Definition
primarily tissue resistance to the action of insulin, late stages associated with impaired insulin secretion
Term
symptoms and causes of severe hyperglycemia
Definition
body wasting
glucose cannot get into tissues
no glucose for utilization or storage
cellular starvation
Term
adipose tissues send out ___________ for metabolic homeostasis
Definition
adipokines
regulate energy metabolism - insulin sensitiviey, satiety, energy utilization
Term
S/S of glucose toxicity
Definition
peripheral diabetic neuropathy (nerves)
CDV, nephropathy, ketoacidosis
Term
pharmacotherapy for type 2 diabetes
Definition
metformin
insulin secretagogue
incretin agents
weight control agents
Term
since insulin degradation in the blood is very ____________, absorption speed largely determines 3 things
Definition
rapid
1) onset of action
2) peak activity
3) duration of action
Term
Fast absorption insulin
Definition
fast onset of action, short duration
Term
slow absorption insulin
Definition
slow onset of action, long duration
Term
How is insulin absoprtion altered
Definition
insulin analogues - amino acid modifications (easier or harder to break apart)
Term
natural insulin - onset, peak, duration
Definition
hexamer
onset: 30 mins
Peak: 2hr
Duration: 6-8hr
Term
insulin lispro - onset, peak, duration
Definition
reduced ability to self associate - speeds up absorption
onset: 15min
Peak: 30min
Duration: 4hr
Term
insulin glargine - onset, peak, duration
Definition
soluble at pH 4.0 (slows absorption)
microprecipitation - depot-6-2-1
onset: 2-4 hr
Peak: none
Duration: 10-24 hr
Term
NPH - onset, peak, duration
Definition
intermediate acting insulin
onset: 1-2 hr
Peak: 4-6 hr
Duration: 12-18
Term
bolus insulin replacement
Definition
mix of rapid, regular and intermediate insulin
taken just before a meal
dose calculated to balance predicted CHO intake and pohysical activity
Term
basal insulin replacement
Definition
long acting insulin- glargine and NPH
administered 1-2 daily
important for overnight glucose release from liver
Term
what happens if insulin doe snot closely match with predicted daily diet and exercise
Definition
hypoglycemia
Term
common causes of hypoglycemia due to intensive insulin therapy
Definition
inadequate CHO consumption
unusual physical activity
too large an insulin does
Term
what is a common adverse effect of insulin therapy
Definition
weight gain
due to increased fat storage, decreased metabolic rate, eating to prevent hypoglycemia
Term
metformin: action, adverse effects, and administration
Definition
increases insulin sensitivity
activates AMP dependent kinase
decreases basal and pos-prandial blood glucose
adverse: minimal , mild GI upset
oral
Term
insulin secretagogues: action, adverse effects, and administration
Definition
promote beta cell depolarization - increasing insulin levels
adverse - weight gain, high hypoglycemia risk
administered orally
Term
solfonylureas
Definition
insulin secretague: glyburide
bind to sulfonylurea receptor, induces potassium channel closure
Term
incretins
Definition
gastrointestinal hormones that stimulate a decrease in blood glucose following a meal
GLP-1 L enhances glucose stimulated insulin secreation (beta); decreases glucagon secration(alpha)
Term
GLP 1 rapidly degraded by
Definition
Dipeptidyl peptidase IV (DPP 4)
Term
DPP4 inhibitors action, adverse effects, and administration
Definition
sitagliptin increase GLP-1 levels
adverse: minimal, pancreas (rare)
oral
low hypoglycemia risk
Term
incretin mimetics: action, adverse effects, and administration
Definition
activate GLP-1 receptors
peptide GLP1 receptor agonist
adverse: nausea, pancreatitis (rare)
administered: injection BID
low hypoglycemia risk
combination therapy
Term
thyroid extraction
Definition
weight loss therapy
increases basal metabolism
muscle and bone wasting
Term
dinitrophenol
Definition
rapid weight loss
neuropathy
Term
amphetamines
Definition
apetite suprressants, energy expenditure stimulation
abuse and addiction
multiple adverse events
Term
sibutramine
Definition
antidepressants
Term
fenfluramine
Definition
serotonergic agents
Term
xenical
Definition
orlistat - lipid absorption
Term
orlistat action, adverse effects, and administration
Definition
promotes weight loss by inhibiting fat digestion and absorption in the intestines (inhibits pancreatic lipase)
adverse: flatulence, diarrhea, bloating, poor bowel control
administered orally
Term
first medication T2D
Definition
metformin
Term
second medication T2D
Definition
sulfonylureas or incretin agents
Term
thrid medication T2D
Definition
insulin or third med
Term
intensified insulin therapy
Definition
+/- metformin
TZDs
Term
what are the main functions of the kidneys
Definition
maintain water/ electrolyte balance
regulate extracellular fluid volume
excretion of metabolic wastes and foreign substances
Term
extracellular fluid volume in the body is an important determinant of _______
Definition
blood pressure
Term
plasma is filtered at
Definition
glomerulus
Term
GFR in a normal adult
Definition
125 mL/min
180 L/day
2mL/sec
Term
secretion
Definition
solutes moving from blood to tubule
Term
reabsorption
Definition
solutes moving from tubule to blood
Term
____% of filtered sodium is reabsorbed
Definition
99
Term
3 types of regulation of solute and water reabsorption
Definition
active - transport proteins and ATP
passive (water)- osmosis
passive (solute) - permeate membrane
Term
what happens to half life when kidneys are damaged
Definition
half life increases
greater risk for drug toxicity
Term
how much fluid is filtered by the kidneys each day
Definition
180
Term
filtrate contains how much NaCl (Kg)
Definition
1.5 Kg
Term
in order from greatest to least where is most sodium reabsorbed
Definition
proximal 67
loop of henle 25
distal tubule 5
collecting duct 3
Term
diureteics
Definition
inhibit sodium reabsorption at different sites of the renal tube
Term
targets sodium transport in the distal convoluted tubule
Definition
thiazide diuretics
Term
targets sodium transport in the ascending limb
Definition
loop diuretics
Term
targets sodium transport in the cortical collecting duct
Definition
potassium sparking diuretics
Term
hydrochlorothiazide and metolazone
Definition
thiazide diuretics
Term
furosemide
Definition
loop direetics
Term
amiloride
Definition
potassium sparing diuretics
Term
spironolactone
Definition
potassium sparing diuretics
Term
bumetanide
Definition
loop diuretics
Term
torsemide
Definition
loop diuretics
Term
thiazide diuretics
Definition
inhibit sodium chloride symporter (distal convoluted tube)
increase sodium and water removal
decreased BP
mild to moderate hypertension
Term
loop diuretics
Definition
inhibit sodium, potassium, chloridde symporter NKCC2 (thick ascending limb)
SEVERE hypertension
Term
potassium sparing diuretics
Definition
inhibits membrane sodium channel ENaC (cortical collecting duct)
directly - amiloride
indirectly - aprinolactone (inhibits aldosterone)
ENHANCE effects of other diuretics
Term
angiotensin II
Definition
biologically active end product of the renin-angiotensin-aldosterone system
constrict blood vessels, increase extracellular fluid volume
INCREASE BP
Term
sites of blood pressure regulations (4)
Definition
heart
kidneys
aterioles
veins
Term
RAAS modulators
Definition
ACE inhibitors
angiotensin receptor blockers
renin inhibitors
Term
aliskiren
Definition
renin inhibitor
Term
Losartan
Definition
ARBs
Term
ramapril
Definition
ACE inhibitors
Term
angiotensin receptor blockers
Definition
antagonize angiotensin receptor in the adrenal gland and the vasculature
for patients who do not tolerate ACE inhibitors well
Term
volume of blood that is completely cleared of substance per unit time
Definition
recall clearance
Term
breakdown product of muscle
Definition
creatinine
Term
normal levels of creatinine in blood
Definition
male: 50 micromol/L to 105 micromol/L
female: 45-100 micromol/L
Term
3 factors that influence resistance in blood vessels
Definition
length
viscosity of blood
radius of the vessel (main determinant)
Term
arrest of bleeding by physiological properties of vasoconstriction and coagulation or by surgical means
Definition
hemostasis
Term
steps of hemostasis
Definition
vasoconstriction
platelet plug formation
coagulation (clotting)
limitation of clot formation
Term
ADP
Definition
adenosine diphosphate
promotes platelet aggregation
Term
5 HT
Definition
vasoconstrictor and stimulates aggrgations
Term
TXA2
Definition
platelet activator, vasocontrictor
Term
coagulation cascade
Definition
intrinsic - initiated by activation of factor XII or VIIa by collagen
extrinsic - initiated by activation of clotting factor VII to VIIa by tissue factor
converge: factor Xa, (converts prothrombin into thrombin)
fibrinogen converts to fibrin
Term
statin (atorvastatin)
Definition
reduce LDL- cholesterol levels
Term
nifendipine
Definition
calcium channel blockers
vasodilator
Term
prazosin
Definition
alpha 1 adrenergic receptor blockers
vasodilator
Term
nitric oxicide donors
Definition
nitroglycerin
vasodilator
Term
propranolol
Definition
beta-andrenergic receptor blockers
decrease contractility of the heart
Term
metoprolol
Definition
beta-andrenergic receptor blockers
decrease contractility of the heart
Term
normal LDL level
Definition
<2.0mmol/L
77mg/dL
Term
normal total cholesterol/HDL ratio
Definition
< 4.0
Term
normal BP range
Definition
<140/90
Term
normal BP range for diabetic patients
Definition
< 130/80
Term
Lovastatin
Definition
statin
Term
mechanism of action for Statins
Definition
reduce cholesterol synthesis in liver cells
INHIBITS HMG-CoA reductase - depletes intracellular cholesterol stores
INCREASES LDL recptors
INCREASED removal of LDL cholesterol
Term
mechanism of action - calcium channel blockers
Definition
INHIBIT cell surface calcium channels
DECREASE actin-myosin interation which DECREASES VSM contraction
Term
mechanism of action - alpha 1 adrenergic receptor blockers
Definition
INHIBIT edogenous catecholamines which
DECREASE calcium release
DECREASE actin-myosin interaction
DECREASE VSM contraction
Term
mechanism of action - nitric oxide donors
Definition
nitric oxide INCREASES production of cyclic guanosine monophosphate which
REDUCES actin-myosin interactions
sublingual spary or tablet
Term
mechanism of action - beta-adrenergic receptor blockers
Definition
INHIBIT increase in calcium
BLOCK catecholamines
DECREASED actin-myosin interactions
Term
selective beta1-AR blockers are favourable for managing
Definition
hypertension because blockade of beta2-ARs in other tissues can have undesirable effects
Term
what will the blockade of beta2-ARs have in the CNS
Definition
diziness and imparied muscle coordination
Term
what will the blockade of beta2-ARs have in the lungs
Definition
prevents bronchodilation - worsen asthma
Term
secondary prevention in CV pharmacology
Definition
antiplatelet drugs
anticoagulants
fibrinolytics
Term
acetylsalicylic acid (ASA)
Definition
COX inhibitors
Term
clopidogrel
Definition
ADP receptor antagonits
Term
abciximab
Definition
GP IIb/IIIa antagonists
Term
warfarin
Definition
indirect acting anticoagulants
Term
heparin
Definition
indirect thrombin inhibitors
Term
dabigatran
Definition
direct thrombin inhibitor
Term
alteplase
Definition
fibrionolytic
Term
ASA adverse effects and mechanism of action
Definition
COX inhibitor which INHIBITS TXA2 - platelet activator
Adverse: increased GI bleeding
Term
ADP receptor antagonists - mechanism of action and adverse events
Definition
ADP induces platelet agregation
BLOCKS this mechanism
adverse: bleeding, neutropenina
Term
GP IIb/IIIa antagonists - mechanism of action and adverse events
Definition
prevents fibrinogen from cross linking platelets
reduces platelet agregation
adverse: increased bleeding and thrombocytopenia
Term
indirect acting anticoagulants - mechanism of action and adverse events
Definition
prevents reactivation of vit K
prevents synthesis of vitamin K dependent clotting factors
adverse: excessive bleeding, many drug interactions
Term
indirect thrombin inhibitor - mechanism of action and adverse events
Definition
interact with antithrombin and enhance inactivation of clotting factors
adverse: increased bleeding
Term
direct thrombin inhibitors - mechanism of action and adverse events
Definition
interact directly with inhibiting actions of thrhombin
DECREASED conversion of bibrinogen to fibrin
advers: increased bleeding
Term
fibrinolytics - mechanism of action and adverse events
Definition
breakdown clot after its formation
binds to fibrin, converts plasminogen to plasmin - breakdown clot
MI use within 6-12 hours; stroke 3 hrs
adverse: increased risk of bleeding, allergic reaction
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