Welcome to Liverpool, PA, USA. This is the web home of a small town in Perry County, Pennsylvania. We are blessed with a rich heritage based on our location along the Susquehanna River and the Pennsylvania Canal. Enjoy your visit to this website, learn about our history, view the photos of Old Liverpool.
Side Effects of Leptin. Leptin is an amino acid protein produced naturally by the body. Injections of Leptin are sometimes used by physicians in obese patients as a part of a weight loss program. Leptin helps control body weight by controlling the desire to eat, an increases in energy expenditure, and an increase in metabolic rate.
The leptin receptor is turned on (activated) by a hormone called leptin that attaches (binds) to the receptor, fitting into it like a key into a lock. Normally, the body's fat cells release leptin in proportion to their size. As fat cells become larger, they produce more leptin. This rise in leptin indicates that fat stores are increasing. In the hypothalamus, the binding of leptin to its receptor triggers a series of chemical signals that affect hunger and help produce a feeling of fullness (satiety).