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beta receptors
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What is the mechanism of action of methylxanthine as a bronchodilator?
Methylxanthines inhibit phospodiesterase which is enzyme that degrade cAMP to AMP. Thus lead to an increase in cAMP
What effect would an inhibitor of phosphodiesterase activity would have?
prolong the effect of epinephrine by maintaining elevated camp levels in the cyto
What is the simple predicate in the sentence cola and coffee contaim caffeine they make you jittery?
Predicate? Many colas and most coffee contains the chemical caffeine that acts on an enzyme called "protein kinase A" by inhibition of the enzyme "CAMP phosphodiesterase" that usually lowers the concentration of cyclic AMP, the activator of protein kinase A. When caffeine inhibits phosphodiesterase, CAMP levels rise activating protein kinase A. Protein kinase A shifts the equation between blood glucose and glycogen by phopphorylating glucose synthase kinase, resulting in higher blood glucose levels and increased energy as well as increased anxiety. Coka cola contains about 1/4th as much caffeine as coffee.: 1) cAMP---->generated from adenyl cyclase + ATP) is broken down by phosphodiesterase (PDE) 2) PDE inhibited by caffiene. 3) PDE inhibition cause more available cAMP---->increases PKA 4) Increased PKA ---> inhibits glycogen synthase (which synthesizes glyciogen from glucose)----> thus increasing blood glucose----> leading to energy and jitters. Unless you seek the predicate of this sentence which is cola and caffeine than they as there are 2 sentences in this question, both flawed
What temperature is a camp fire?
I have come across several sources that state that a camp fire ranges roughly from 900 to a little under 1100 degrees C. I guess it depends on your fire's geometrical configuration (heat concentration, conservation, etc.) Hope this helps. Also, a cigarette, at the tip, burns at roughly 900 degrees C.
Name the compound CaCl2?
CaTe is the chemical symbol of calcium telluride.
What are the properties of the alpha adrenergic receptors?
The alpha adrenergic receptors are located in the effector organs of sympathetic nervous system. They are the most common type of alpha adrenergic receptor. Alpha adrenergic receptors tend to be excitatory. They have a greater affinity for nonepinephrine than epinephrine.
What hormone action is used by neurotransmitters and olfactory receptors?
cAMP
Which mechanisms of hormone action is used by neurotransmitters and olfactory receptors?
cAMP
The second-messenger mechanism of hormone action operates by?
Binding to specific receptors and employing the services of G proteins and cAMP.
Which of the following mechanisms of hormone action is used by neurotransmitters and olfactory receptors?
cAMP
How can you increase CREB levels?
CREB is a transcription factor whose name is short for cAMP response element-binding protein. It is classically activated by the cAMP intracellular signaling cascade, in which elevated intracellular cAMP levels activate cAMP-dependent protein kinase (PKA). PKA then activates CREB by phosphorylating it on specific serine and threonine admino acid residues, changing the properties of CREB so that it can bind DNA and other proteins to regulate transcription of certain genes.
What are hormones use cAMP as second messengers?
B & a2 adrenergic catecholamines, ACTH, cRH,FSH,LH,MSH,TSH SS, PTH,CALCITONIN, ADH, HCG,GLUCAGON
What are the functions of salbutamol?
Salbutamol is a beta 2 adrenoceptor agonist. It binds therefore to Beta 2 receptors found particularly in the bronchioles of the respiratory system. In binding to these receptors it activates the Gs protein that the receptor is associated with and GDP is exchanged for GTP. This then activates the enzyme adenylate cyclase that coverts ATP into cAMP (a secondary messenger). Increased intracellular cyclic AMP (cAMP) increases the activity of cAMP dependent protein kinase A, which alters the phosphorylation of myosin and lowers intracellular calcium levels within the muscle. Lower levels of calcium cause relaxation of the smooth muscle and therefore bronchodilatation. Bingo! The airways dilate and everyones happy!
Does it hurt the ozone layer when you make a camp fire?
No camp fires do not cause much damage. They release gases but in very minute levels.
What is the mechanism of action of methylxanthine as a bronchodilator?
Methylxanthines inhibit phospodiesterase which is enzyme that degrade cAMP to AMP. Thus lead to an increase in cAMP
How do non steroid hormones control their target cells?
They: Bind to cell membrane receptors Use cAMP as a second messenger and they cause a cascade amplification reaction
What is spy camp?
Spy camp is a camp where you go and learn how to be a spySpy camp can be taught by a head advisor, or can be run by a group of people with an illegal aged babysitter (12 or older). Spy camp has 10 levels. You climb up trees, spy on people, and learn about alot of Spy Quipment.
