For example, doctors use some stimulants to treat disorders such as Attention-Deficit/Hyperactivity Disorder (ADHD). However, when abused, stimulants can pose serious health risks to your brain and your body. Read on to find out the effects of the following stimulants: Cocaine.
peptide hormones (pepËÂ·tÄ«d hÅrËÂ·mÅnz), n.pl water-soluble hormones comprised of a few amino acids that introduce a series of chemical reactions to change the cell's metabolism. Examples include hormones of the pituitary gland and parathyroid glands.
Peptides (from Gr. ÏÎµÏÏÏÏ, digested, derived from ÏÎ­ÏÏÎµÎ¹Î½, to digest) are biologically occurring short chains of amino acid monomers linked by peptide (amide) bonds. The covalent chemical bonds are formed when the carboxyl group of one amino acid reacts with the amino group of another. The shortest peptides are dipeptides, consisting of 2 amino acids joined by a single peptide bond, followed by tripeptides, tetrapeptides, etc.