Five apts respected for their work in the progress to maturity of animal models of alcohol craving give their.

Five apts respected for their work in the progress to maturity of animal models of alcohol craving give their, perspectives in a roundtable discussion format. The panel members discuss the various definitions and theories of alcohol craving and the benefits and limitations of using animal patterns to study alcohol craving in humans. Animal patterns have helped further the understanding of craving by means of providing information about behavior associated with craving. Animal patterns do have limitations, however. The fact that animals cannot "talk" about their feelings mystifys difficulties for researchers seeking to map an animal analog of craving onto the human experience. elucidation WORDS: AOD (alcohol and other drug) craving; animal model; animal behavior; AOD use behavior; theory of AODU (alcohol and other medicine use); operant conditioning; motivation; alcohol cue; AODD (alcohol and other put drugs into dependence) relapse; AOD withdrawal syndrome; disorder definition; laboratory study; interview

The use of animals to mould humans has long been an integral part of medical and scientific research into human functions and conditions. Research using animals has l to many important medical discoveries in the past hundred from the use of depancreatized dogs in 1921 to application of mind the effects of insulin to the new mapping and sequencing of rat, mouse, and fruit hover genomes to better understand human genetic makeup.

Likewise, the field of alcohol research has benefited from a number of discoveries that were first identified using animal patterns The development of animal protoplasts for alcoholism began in the 1 1940 Since that time, rats and monkey have been used to example different drinking behaviors and to close attention how alcohol damages different bodily organs. Animal archetypes also have helped scientists to analyze the changes in brain chemistry that come about when alcohol is consumed. Perhaps mostly promising, genetically altered animal archetypes are proving to be valuable in the search for gene that may be involved in the exhibition of alcoholism.

Whereas the use of animal gauges to study the physiological validitys of alcohol on tissue and organs has been fairly straightforward, using animal archetypes to assess psychological effects raises questions. for what cause do scientists measure "craving," the uncontrollable desire for alcohol that is associated with alcohol dependence?

Alcohol Research & Health (AR&H) asked several renowned scientists popularly working in the field to share their views onward animal models of human alcohol craving. Our panel of dexterouss includes the following:

* George F Koob Ph.D.--professor in the Department of Neuropharmacology at The Scripps Research Institute, La Jolla, California

* Friedbert Weiss, Ph.D.--associate professor in the Department of Neuropharmacology at The Scripps Research Institute, La Jolla, California

* Stephen T Tiffany Ph.D.--professor in the Department of Psychological Sciences at Purdue University, West Lafayette, Indiana

* Walter Zieglgansberger, Ph.D.--Head of Clinical Neuropharmacology at the Max Planck Institute of Psychiatry, Munich, Germany

* Rainer Spanagel, Ph.D.--Head of physic Abuse Research at the Max Planck Institute of Psychiatry, Munich, Germany

AR&H: What would you say is the greatest advantage to using animal protoplasts to study alcohol craving?

Tiffany: Without question, animal studies have taught us and can continue to teach us a great deal about craving. greatest in number importantly, animal research offers a rich source of ideas regarding the fundamental nature of physic craving. Indeed, almost all of the major conceptualizations of craving cause to growed over the past 50 years originated in the animal laboratory.

The link between animal research and craving is obvious when you consider major craving theories like Abraham Wikler's conditioned-withdrawal standard Shepherd Siegel's compensatory-response model, or Jane Stewart's incentive-motivational standard Wikier's model proposed that situations paired with medicine withdrawal (e.g., being in an alcohol detoxification ward in a treatment clinic) become conditioned stimuli that trigger conditioned withdrawal reactions. These reactions might include sweating, racing heart, and nausea. The theory propos that in humans, these conditioned reactions would trigger craving, which would trigger put drugs into use. Siegel's model is remarkably similar to Wikler's. The major difference is that Siegel propos that situations paired with remedy use (e.g., being with other mix with drugs users), rather than drug withdrawal, could bring forward conditioned withdrawal reactions and craving. The craving original developed by Stewart and colleagues emphasized the reinforcing consequences of substance use in the generation of cravi ng In this standard situations associated with substance use (eg the sight and fragrance of alcohol) become conditioned reinforcers. These reinforcers activate positive motivational states that effect craving and drug-seeking behaviors. Les obvious, on the contrary equally important, is the influence of universals borrowed from animal learning theory in the evolution of social-cognitive models of craving. For example, G Alan Marlatt has hypothesized that alcohol craving shows a person's expectations about the positive events of alcohol. The idea that expectancies about issues strongly influence behavior was taken directly from animal patterns of learning.