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28 Cards in this Set
- Front
- Back
Epinephrine: what receptors stimulates?
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Все-a1.a2, В1, В2б low doses selective for B1
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Alpha-1-adrenoreceptor
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vasoconstriction, increased peripheral resistance,increased BP,mydriasis, closure of the bladder sphincter-альфа никогда не ссыт
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Alpha-2-adrenoreceptor
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Inhibition of norepinephrine release
Inhibition of insulin release. Стимуляция альфа-2 рецептора ведет к блоку цАМФ и последующему торможению освобождения norepinephrine. |
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Difference between alpha and beta receptors
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Alpha receptors show weak response to synthetic agonists, while B-receptors show low response to NE and E
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Betta-1 receptors action
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Beta-1 receptors est only on the heart, so they enhance pulse and contactility
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Function of betta-2 receptors
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Vasodilation, slight decrease of peripheral resistance, bronchodilation, increased muscle and liver glycogenolysis, increased release of glucagon
-relaxed uterine smooth muscle |
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3 types of adrenergic agonists
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1.direct acting-stimulate receptor directly
2.indirect acting-enhance release of ТУ from vesicles 3. Mixed acting- direct and indirect acting |
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Another classification of adrenergic agonists
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-catecholamines
-noncateholamines |
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Naturally occuring catecholamines
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NE, E, dopamin- all arrive from tyrosine, tyrosine arrives from phenilalanine.
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Preganglionic fibers of parasympathetic NS are very and postganglionic fibers are very
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Long preganglionic and short postganglionic
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Preganglionic fibers of sympathetic fibers form . Preganglionic fibers of sympathetic nerves are
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Preganglionic fibers form paraspinal ganglia and pre-fibers are short
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What cathecholamines do you know?
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Epinephrine, norepinephrine, dopamine
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Common features of all cathecholamines?
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Rapid onset of action, brief duration of action, not administered orally,do not penetrate blood-brain barrier
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Adrenoceptors mnemonic
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ABCD- alpha constrict, beta dilate
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Adrenoceptors mnemonic
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ABCD- alpha constrict, beta dilate
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Epinephrine: basic receptors?
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alpha-1 and 2, beta 1 and 2
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Norepinephrine: basic receptors?
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alpha 1, alpha 2 nad betta-1 predominate
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Isoproterenol (изадрин): receptor types?
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only betta-1 and betta-2 receptors. Селективный бета миметик- БАТЯ ИЗАДРИН
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Action of norepinephrine on blood pressure?
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alpha 1 effect- both systolic and diastolic BP rises up because of increased peripheral resistence. Kidney blood glow is also reduced. НОРАадреналин повышает ВСЕ- и ситстолическое и диастолическое
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Action of epinephrine on blood pressure?
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betta-1- positive inoropic and chronotropic effect causes increased systolic BP and lows diastolic BP
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Action of epinephrine on glucose?
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causes hyperglycemia and lipolysis-стресовая реакция-подем глюкозы, горение жира
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ISOproterenol (изадрин) action on cardiac function?
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As in EPInephrine: positive ino-and chronotropic effect and lowering peripheral resistance. Удобно при ав блоке с гипертонией
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Dopamine effects
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alpha 1 and beta 1- rises BP, dilates renal blood vessels through D receptors. Positive chrono and inotropic effects like with epinephrine. ХИНА эпинерфрина-положительный хроно и инотропный эффекты
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Dobutamine action and use
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Synthetic. Beta-1 activity- only increase of cardiac output and rate, no effects on vessels. Used in chronic cardiac failure
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Phenylephrine: receptors and action
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alpha receptors, (в названии 2 части) alpha 1 predominates alpha 2. Vasoconstrictor, rise in systolic and diastolic BP. Used in nasal drops
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Methoxamine: receptora and action.
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Alpha 1 over alpha 2 action.Raise in BP. Подъем давления засчет спазмов паренхиматозных органов. METAXA- крепкий конъяк, как нораадреналин
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Clonidine (клофелин): type, action?
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alpha-2 agonist т.е. тормозит высвобождение катехоламинов, действуя на пресинаптическую мембрану. Симуляция альфа-2 рецепторов вызывает эякуляцию
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MAD 2s- группа каких рецепторов?
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M2,alfa 2, D2- G protein активирует аденилилциклазу-снижается выработка цАМФ- снижается протеинкиназа А
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