Week 1 Glucose Regulation Flashcards
Review of glucose regulation :
what is alpha cells ?
what is beta cells ?
what does lysis means ?
what does genesis mean ?
what is ketogenesis?
alpha cells secretes and makes glucagon
beta cells secretes and makes insulin
lysis means breaking
genesis means making
ketogenesis is the byproduct o fat breakdown
Review of glucose regulation :
Once the cells are fed ( after eating a meal) what happens to glucose ( what does it convert to? ) and what does it mean ?
glucose is converted to glycogen, this is the storage form of glucose
true or false. When you have been asleep for hours, this typically results in a lower blood sugar due to not eating or no nutrients entering the body.
this is true
what is the normal range of blood sugar ?
4-6 mmol/L
Review of glucose regulation.
Try to revise the diagram given in the slides, ( make it simple )
Glucose is going to be converted to glycogen ( keep it reserve when blood sugar drops we have something to use –> keeping in in storage)
the body has the capacity to maintain energy and impulse of energy in order to function.
Glucose regulation continued ; hormones
What causes increase blood glucose?
epinephrine
cortisol
growth hormone
glucagon
does epinephrine and no epinephrine cause an increase in blood glucose? and if so why?
yes it does, i gets released by physiological stress
what type of hormones decreases blood glucose?
GLP 1 ( glucagon like peptide 1 ) and insulin
What is this describing : a hormone that inhibits the normal action of glucagon which slows gastric emptying and increases pancreatic insulin secretion
glucagon like peptide 1 ( GLP 1 )
describe what glucagon like peptide 1 ( GLP 1 ) mean?
a hormone that lives in the gut that secreted when we eat : what it does is that inhibits the normal action of glucagon which slows gastric emptying and increases pancreatic insulin secretion
this is a condition where by normal glucose regulation is malfunctioning
diabetes mellitus
True or false. Glucosuria is a major symptom and along with sweet swelling pee.
true
what are the major complications for hyperglycemias
microvascular and macrovascular
what are the acute complications for hyperglycemia
polyuria
polydipsia
polyphagasia
glucosuria
what is this describing : no endogenous ( completely stop ) secreting insulin
type 1 diabetes
Describe what type 1 diabetes mean?
pancreas’s failure to produce enough insulin due to loss of beta cells
describe what type 2 diabetes mean ?
insulin resistance contributes to high glucose levels in the blood
true or false. Type 2 diabetes, is an inappropriate glucose production by the liver.
this is true
goals of treatment for diabetes
manage symptoms of hyperglycemias
prevent long term complications of hyperglycemias
maintain euglycemia and glucose regulation
symptoms of acute hyperglycemia
significantly increased thirst
frequent urination
weight gain or loss
extremely tired or no energy
blurred vision
Why does blurred vision occur as a symptoms during an acute hyperglycemia
because swelling may occur in the lens ( and the lens is in charge of focusing, therefore blurred vision may occur )
What are the 3 P’s and G symptoms of acute hyperglycemia
polyuria
polydipsia
polyhagia
glosuria
long term complications of hyperglycemia
major complications of diabetes
name what undergoes microvascular and macrovascular
microvascular
1. eye
2.kidney
3.neuropathy
macrovascular
1.brain
2.heart
3.extremities
Re-call the eye, kidney, and neuropathy undergoes microvascular ( describe each and how it contributes to the long term complications of hyperglycemia)
eye
- high blood glucose and high blood pressure can damage eye blood vessels, causing retinopathy, cataracts, and glaucoma
kidney
- high blood pressure damages small blood vessels and excess blood glucose overworks in the kidneys, resulting in nephropathy
neuropathy
- hyperglycemia damages nerves in the peripheral nervous system. This may result in pain and or numbness. Feet wounds may go undetected, get infected and lead to gangrene.
describe what undergoes macro-vascular in terms of major complications of diabetes, and describe each of the category.
brain
- increased risk of stroke and cardiovascular disease, including transient ischemic attack, cognitive impairment
heart
- high blood pressure and insulin resistance increase risk of coronary heart disease
extremities
-peripheral vascular disease results from narrowing of blood vessels increasing the risk for reduced or lack of blood flow in legs. Feet wounds are likely to heal slowly contributing to gangrene and other complications
true or false. Insulin is released in a basal/bolus fashion, meaning insulin release is close to meals or stressors ( and there is a background always secreting at a lower level )
true
the role of insulin in the body :
metabolic actions of insulin
what are the substance affected ?
carbohydrates
amino acids
lipids
the role of insulin in the body: metabolic actions of insulin insulin action that undergoes the substance of carbohydrates
increase glucose uptake
increase glucose oxidation
increase glucose storage
increase glycogen synthesis
decrease glycogenolysis
gluconeogenesis
site of action of the following insulin in the body: carbohydrates and insulin action
increase glucose uptake - muscle, adipose tissue
increase glucose oxidation - muscle
increase glucose storage
increase glycogen synthesis
decrease glycogenolysis
- muscle, liver
gluconeogenesis
- liver
the role of insulin in the body substance affected : amino acids and proteins
describe what is happening in the insulin action
increase amino acid uptake
decrease acid release
increase protein synthesis
where is the site of action for the increase amino acid uptake
decrease acid release
increase protein synthesis that undergoes amino acids and protein
all muscle
the role of insulin in the body: metabolic actions of insulin what is the insulin action ? (lipids)
increase triglyceride
decrease release of FFA and glycerol
decrease oxidation of FFA to ketoacids
the role of insulin : metabolic actions of insulin of lipids : where is the site of action?
adipose tissue
adipose tissue and liver
insulin therapy: who needs it and who might need it ?
type 1 diabetes - pancreatic no longer secretes insulin therefore these patients needs endogenous insulin to survive insulin independent diabetes mellitus
true or false:
1. NPH insulin is intermediate acting and is approved for mixture with rapid and short acting insulins
2. Glargine should be administered once daily and peaks within 10 hours
3. Insulin is a high alert medication
4. after administering insulin, the nurse will monitor for signs and symptoms of hypoglycemia. these include thirst, blurred vision and increased urination
5. if after giving insulin the patient becomes hypoglycaemic and loses consciousness, I will give them an oral glucose source such as: glucose tablets, orange juice or candies
6 beta blockers mask sympathetic nervous system warning signs of hypoglycemia
7. being 30 mins early or late in administering my patients insulin is not a serious problem. I am still within my “window”
- true
- false
- true
- false
- false
- true
- false
insulin therapy continued , what are the adverse effects ?
hypoglycemia
hypokalemia
lipodystrophy
what is recumbent
exogenous ( injectable insulin made using recumbent dna technology ) another word for artificial ( mimics the insulin )
what are the four categories under non-insulin diabetic medications?
insulin sensitizers
incretin agents
insulin secretagogues
miscellaneous (glucose wasters)
Insulin is also used to treat what ?
elevated serum potassium (hyperkalemia)
what falls under insulin sensitizers?
biguanide (metformin)
TZDs (Rosigilitazone)
Types of insulin
short duration, rapid acting
short duration
intermediate duration
long duration
ultra long duration
combination insulin
what falls under incretin agents?
- GLP 1 receptor agonists (Liraglutide)
- DPP 4 Inhibitors (Sitagliptin)
what falls under insulin secretagogues?
- Sulfonylureas (Glyclazide)
- Meglitinides (Repaglinide)
what falls under miscellaneous (Glucose wasters)?
- SGLT 2 Inhibitors (Canagliflozin)
- Alpha- glucosidase Inhibitors (Acarbose)
generic brand/name of types of insulin for short duration, rapid acting
insulin lispro ( humalog)
insulin aspart ( novolog )
go more into depth with insulin sensitizers metformin and thiazolidinediones/TZDs Rosiglitazone?
Biguanides Metformin (Glucophage):
MOA: 1)Decreases glucose production in the liver
2) Decreasing insulin resistance in muscle and fat cells
3) Slightly reduces glucose absorption in the gut
Side Effects: GI upset, lactic acidosis, decreased appetite
Thiazolidinediones /TZDs
Rosiglitazone (Avandia)
MOA: 1) Decreasing insulin resistance in
muscle and fat cells
2) Decreases glucose production in the liver
Side Effects:
- most common URTI, HA,
sinusitis, and myalgia.
- greatest risk is heart failure
generic/brand name for short duration, short acting
regular insulin ( humulin R )
types of insulin : intermediate duration what is the generic/brand name for it
neutral protamine hagedorn insulin suspension ( NPH )
types of insulin : long duration : what is the generic/brand name
insulin giargine ( lantus)
what is GLP 1 Receptor Agonists
Liraglutide (Victoza)?
MOA: Activates
receptors for GLP-1
Side Effects: GI upset, allergic rxn, pancreatitis, thyroid Ca
what is DPP 4 Inhibitors Sitagliptin (Januvia)?
MOA: inhibiting DPP 4 (blocks the breakdown of GLP 1 incretins)
Side Effects:
pancreatitis, allergic rxn
essentially shuts it downnnn!!
types of insulin : ultra-long duration -> what is the generic/brand name
insulin degiudec ( tresiba)
what is Sulfonylureas Gliclazide (Diamicron)?
MOA: Stimulation of pancreatic insulin release
may also increase target cell sensitivity to insulin
Side Effects: hypoglycemia, weight gain
what is Meglitinides Repaglinide
(GlucoNorm)?
MOA: Stimulation of pancreatic insulin release
Side Effects:
hypoglycemia, weight gain
types of insulin : combination insulin –> what is the generic/brand name
humulin 50/50
what is SGLT 2 Inhibitors Canagliflozin (Invokana)?
MOA: Inhibits SGLT-2 in the kidney→reduces reabsorption of glucose
Increases urinary glucose excretion
Side Effects:
Yeast infections, UTIs, Dehydration, Hyponatremia
what is the indication for short duration, rapid acting (inuslin lispro, insulin aspart )
used to control post prandial ( post meal ) increases in blood glucose
what is Alpha-Glucosidase Inhibitors Acarbose (Glucobay)?
MOA:
Delays absorption of dietary carbohydrates
Side Effects:
GI upset, anemia, liver dysfunction