Insulin controlled substance

The integration of biosensors with drag delivery systems allows the controlled release of a drag substance in response to the levels of biological modulator. For example, the use of a glucose biosensor may be used to control the release of insulin from an implanted device or perhaps even an iontophoretic delivery device (see Chapter 8). 

Know the action of hormones involved in the digestion and metabolism of food substances insulin, glucagon, secretin, gastrin, and cholecystokinin. Know their chemical and physiologic properties and what controls their blood levels. 

Thyroxin is a secretion of the thyroid gland which controls metabr olism. Insulin is a secretion of the pancreas which controls the combustion of carbohydrates. Both of these honpones are proteins, thyroxin having a prosthetic group which contains iodine. Many other hormones are known, some of which are proteins and some simpler chemical substances. i... 

Translational and transcriptional control are sometimes combined. For example, insulin (which regulates the synthesis of a large number of substances) and prolactin (another hormone) are required together for production of casein (milk protein) in mammary tissue. Both hormones are needed to initiate transcription but prolactin in addition, increases the lifetime of casein mRNA. 

Evidence has been offered for the existence of a hormone, produced in the liver and under pituitary control, that favors lipogenesis from glucose by inhibiting the action of insulin on muscle. A substance that... 

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