3-methoxy-4-hydroxymandelic acid

(vanillylmandelic acid, VMA)

FIGURE 22 Catecholamine degradation. MAO, monoamine oxidase; COMT, catechol-O-methyltransferase; AD, alcohol dehydro-genase; AO, aldehyde oxidase. (From Cryer PE, In Felig P, Baxter JD, Frohman LA, eds., Endocrinology and metabolism, 3rd ed., McGraw-Hill, New York, 1995, p 716.)

variety of tissues to maintain the integrity of the internal environment both at rest and in the face of internal and external challenges. Catecholamines enable us to cope with emergencies and equip us for "fright, fight, or flight.'' Responsive tissues make no distinctions between blood-borne catecholamines and those released locally from nerve endings. In contrast to adrenal cortical hormones, effects of catecholamines are expressed within seconds and dissipate as rapidly when the hormone is removed. Medullary hormones are thus ideally suited for making the rapid short-term adjustments demanded by a changing environment, whereas cortical hormones, which act only after a lag period of at least 30 min, are of little use at the onset of stress. The cortex and medulla together, however, provide an effective "one-two punch,'' with cortical hormones maintaining and even amplifying the effectiveness of medullary hormones.

Get Rid of Gallstones Naturally

Get Rid of Gallstones Naturally

One of the main home remedies that you need to follow to prevent gallstones is a healthy lifestyle. You need to maintain a healthy body weight to prevent gallstones. The following are the best home remedies that will help you to treat and prevent gallstones.

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