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elma neden acıktırır ki?


küheylan

Öne çıkan mesajlar

kazımkarabekir said:
Ardeth said:
kahve acıktırır kafein gastrik asit salgılattırır
elma da uykuyu açar derler acaba elmanın içinde kafein mi va lan o_O
bişeyide bilme be

yok lan sallıyo ya.
bi halt bildiği yok zaten.
iddaa kuponu doldur desen "logaritma mı alcaz yoksa burda mı yersiniz" der.
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said:
Some of the secondary effects of caffeine are probably caused by actions unrelated to adenosine. Caffeine is known to be a competitive inhibitor of the enzyme cAMP-phosphodiesterase (cAMP-PDE), which converts cyclic AMP (cAMP) in cells to its noncyclic form, thus allowing cAMP to build up in cells. Cyclic AMP participates in activation of protein kinase A (PKA) to begin the phosphorylation of specific enzymes used in glucose synthesis. By blocking its removal caffeine intensifies and prolongs the effects of epinephrine and epinephrine-like drugs such as amphetamine, methamphetamine, or methylphenidate. Increased concentrations of cAMP in parietal cells causes an increased activation of protein kinase A (PKA) which in turn increases activation of H+/K+ ATPase, resulting finally in increased gastric acid secretion by the cell. Cyclic AMP also increases the activity of the funny current, which directly increases heart rate.
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