CD 17 Flashcards
Where is the adrenal Glands(stress glands) of our body ?
On top of our kidneys.
Adrenal glands produces
Mineralocorticoids Glucocorticoids Androgens Catecholamines Peptides
Adrenal gland is made of 2 different parts ?
Medulla
Cortex
Cortex has 3 different zone ?
Zona Glomerulosa
Zona Fasciculata
Zona Reticularis
Glucocorticoids produces
Cortisol and Cortisone
Cortisol is the predominant corticosteroid secreted
from ?
Adrenal cortex in humans
What influence Cortisol
Secreted according to a diurnal (Night and day) pattern under the
influence of ACTH from the pituitary gland under the
influence of CRH from the hypothalamus
HPA axis
Hypothalamus (CRH hormone)=>Anterior Pituitary(Corticotropes)=> Adrenal Cortex=>Cortisol which try to react stress but when enough than it signal negative and turn cortisol production down.
From where cortisol produce ?
adrenal cortex
What is the sorce of secration for Glucocorticoids ?
Zona faciculate
What is the sorce of secration for Mineralcorticoids ?
Zona glomerulosa
What is the half life of Glucocorticoids
70- 90 mins
What is the half life of Mineralcorticoids
20 min
Where is the main action of Glucocorticoids
metabolism of glucose via
carbohydrate , protein and
lipid metabolism
Where is the main action of
Mineralcorticoids
on minerals for example : sodium, potassium and
hydrogen ions
Glucocorticoids controls the carbohydrates,
fats and other proteins
within the system
Mineralcorticoids Control of electrolytes and
water balance of the body
Glucocorticoids help with
healing wounds
of minimising pain in injury
Glucocorticoids used as antiinflammatory drugs
Anti-inflammatory and immunosuppressant drugs
Mechanism of Action for Glucocorticoid ?
-Activated GR complex upregulates the expression of anti-inflammatory proteins -Activated GR complex decreases the expression of pro-inflammatory proteins
Mechanism of Action for Glucocorticoid ?
Phospolipids=> Arachidonic acids=>Cyclooxygenase=>prostaglandins,Thromboxane, Prostacyclins
Glucocorticocoids Not stored
Rate of synthesis and rate of release equal.
Glucocorticocoids synthesized
rhythmically and control by irregular pulses of ACTH
Glucocorticoids act via their receptors
in the nucleous
Mineralocorticoid and glucocorticoid receptors are closely related and share similarities
in their ligand and DNA binding domain