hardcover medical research book

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

The discovery of how opiates such as morphine and heroin relieve pain and produce euphoria is one of the most dramatic tales of modern science. It begins in 1971 when, at the height of the undeclared war in Vietnam, Richard Nixon officially announced a war on drugs. Heroin addiction--no longer confined to urban ghettos--was causing bad public relations for the White House. The specter of young American soldiers demoralized, drugged, and committing atrocities was not the image President Nixon wished to convey as he argued for further bombings of North Vietnam. In this book Solomon Snyder describes the political maneuverings and scientific sleuthing that led him and Candace Pert, then a graduate student in his lab, to a critical breakthrough in the effort to understand addiction. Their discovery--the so-called opiate receptor--is a structure on the surface of certain nerve cells that attracts opiates. Heroin or morphine molecules fit into opiate receptors much as a key fits into the ignition switch of a car--thus turning on the engine of the cell. Snyder and his students were able to show that nerve cells which possess opiate receptors are found in precisely those parts of the brain that control emotion and pain. Dr. Snyder describes the friendly yet intense competition from other researchers to expand upon this initial discovery. From the work of two Scottish investigators, Hans Kosterlitz and John Hughes, neuroscientists now know not only where opiate receptors are found in the brain but also why they are there: to serve as binding sites for an opiate-like substance produced by the brain itself--the brain's own morphine. This substance, called enkephalin, regulates pain, mood, and a host of other physiological functions. From this very human chronicle of scientific battles in the ongoing war against pain and addiction, we gain an appreciation of the extraordinary intellectual processes of an eminent scientist. But Dr. Snyder's story of scientific brainstorming also affords us rare glimpses into the fruitful, sometimes frustrating, relationships among scientists which enrich and complicate creative work. We are reminded of the delicate political alliances that are forged at every level of organization, from the lab bench to the Oval Office, as the scientific community attempts to fit its needs to those of the larger society.

LIFE AND ENERGY is a brilliant introduction to the chemistry of life. In this highly lucid guide to the dynamics of modern biology, Isaac Asimov deftly explores the most recent discoveries in this constantly surprising field of inquiry. In the first part, he explains the mechanics of the inanimate world, the significance of energy, work, motion, heat, and chemical reaction. He then uses these concepts in the second half to analyze and explain the latest advances in the study of enzymes, amino acids, proteins and the very processes which constitute life itself. In short, Dr. Asimov's keen examination of biology's current desire to isolate and control the very basis of life--the significance of which promises to revolutionize life itself--becomes a fascinating as well as informative excursion. Illustrated with drawings, charts and diagrams.

Livestock Health Encyclopedia