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Section One - Regulation Of Cell Growth And Development.- The Role of Growth Hormone and Prolactin in Beta-Cell Growth and Regeneration.- The Insulin-Like Growth Factor Family of Peptides, Binding Proteins and Receptors: Their Potential Role in Tissue Regeneration.- The Effects of IGF-I and IGF-II on Cell Growth and Differentiation in the Central Nervous System.- Growth Factor Expression in Normal and Diabetic Rats During Peripheral Nerve Regeneration through Silicone Tubes.- Oncogenes and Cell Growth.- Interferon - A Candidate Mediator of Cell Growth.- Section Two - Models for the Study of Cell Regeneration.- Islet Beta-Cell Regeneration and Reg Genes.- Factors Regulating Islet Regeneration in the Post-Insulinoma NEDH Rat.- Regeneration of Pancreatic Endocrine Cells in Interferon Gamma Transgenic Mice.- Trophic Stimulation of the Ductular-Islet Cell Axis: A New Approach to the Treatment of Diabetes.- Section Three - Induction of Cell Growth and Mechanisms.- Expression of Insulin-Like Growth Factors (IGFs) and Their Binding Proteins (IGF BPs) During Pancreatic Development in Rat, and Modulation of IGF Actions on Rat Islet DNA Synthesis by IGF BPs.- The Partial Isolation and Characterization of Ilotropin, A Novel Islet-Specific Growth Factor.- Expression of Growth Factors in a Pancreatic Islet Regeneration Model.- Role of p21ras in Hormone Signalling and Cell Growth Transformation.- Phosphoinositides and Cell Growth.- The Physiological STOP Pathway: Target Regulation of Axonal Growth.- Cell Calcium Regulation of Myosin I - A Motor for Membrane Movement.- Section Four - Pathogenic and Therapeutic Ramifications.- Amylin Expression in the Pancreatic Beta-Cell.- Studies of Composite Grafts of Fetal Pancreas (FP) and Fetal Liver (FL) in the Streptozotocin-Induced Diabetic Rat.- Contributors.

Aaron I. Vinik, M.D., Ph.D. I IEastem Virginia Medical School The Diabetes Institutes Norfolk, Virginia 23510 This symposium, held in June 1991, was a gathering of international scientists to exchange their views on current concepts of cell growth and differentiation. Each scientist was asked to present a topic of their research related to cell growth and regeneration and to participate in a round table conference elaborating on current knowledge and sharing their experiences. By furthering this promising area of endeavor, a means of understanding ontogeny of cell development and of providing insights into tumor biology would prevail. Of prime importance was the anticipation that new information from a better understanding of the normal evolution of the pancreatic islet would generate alternative approaches to curing diabetes. This forward serves as a short introduction to the concept of pancreatic islet regeneration and the models currently in use to study the process. DEVELOPMENTAL ORIGIN OF ISLETS DURING EMRYOGENESIS The developing pancreas appears as a protrusion from the dorsal surface of the l embryonic gut. The different islet cell types appear sequentially during development in vivo. It therefore seems reasonable to propose that coordinated growth is dependent upon specificity of growth factors.