In the past few decades, neuropathology has witnessed a resurgence. The rise of structural and functional imaging techniques has allowed pathological studies to target regions of special interest as revealed by whole-brain techniques, and the development of comprehensive software packages has facilitated cellular and pathological measurements. Furthermore, a new generation of antibodies and improved staining methods has made the field more accessible to researchers and revealed more detail than could once have been envisaged. Perhaps most important of all has been the sourcing of high-quality tissue through modern, large-scale databases covering multiple tissue banks, removing much of the heterogeneity that had made repeat studies all but impossible. The Neuropathology of Schizophrenia reviews the field following these recent improvements in techniques and contrasting more modern methods against older studies. This book presents the current state of neuropathological knowledge in schizophrenia by means of examination of neuropathology as informed by functional systems. It starts by considering the frontal cortical region, a particularly well-examined region of the brain, before moving through other cortical regions, subcortical pathways and the deep white matter. In addition, potential new routes for investigation are considered, particularly in glial cells.

What is schizophrenia? This is one of the most controversial questions in psychiatry and mental health research; however, in the last twenty years, there have been significant advances in our understanding of the topic. This book provides a balanced, comprehensive and up-to-date overview of the neuropathology of schizophrenia and its interpretation, covering the latest evidence derived from all fields of research, from brain scans to microscopy. The authors include many of the foremost international authorities in this rapidly developing field.

This volume reports the proceedings of a NATO Advanced Workshop held in Castelvecchio Pas coli, Italy, from August 28 - September 1, 1989. An important inspiration for this Workshop came from our studies in Helsinki and Denmark, which have found that exposure to an influenza epidemic during the second trimester of fetal development increases the risk of adult schizophrenia. This finding has stimulated an important new hypothesis in the study of the etiology of schizophrenia. It has suggested the possiblity that disturbances of brain development during gestation may contribute to the risk of adult schizophrenia. We determined that it would be of value to bring together schizophrenia researchers and those doing basic studies of the development of the brain. Both groups of researchers were encouraged to communicate at a level that would help other scientists to integrate their knowledge and techniques into their own discipline. For this reason, perhaps, the papers of this volume are remarkably clear and not difficult to understand. The first four chapters describe the neurochemical and structural aspects of brain development. The chapter by Dziegielewska and Saunders discusses transport mechanisms and the properties of endogenous and exogenous substances that control the internal environment of the developing brain. In the second chapter, Nowakowski reports on his studies of the develop ment of the hippocampus in mice genetically inbred to exhibit disruptions of neural migration.

This is the third meeting we have organized which has explored the meaning of fetal neural developmental disruption in the etiology of schiwphrenia. The first was sponsored by the Schiwphrenia Research Branch with the scientific cooperation of Dr. David Shore. We met in Washington; the output of the meeting was published in a book entitled, Fetal Neural Development and Adult Schizophrenia. Cambridge University Press. 1991. The next meeting was an Advanced Research Workshop sponsored by NATO and was held at n Ciocco. Castelvecchio Pascoli. This meeting was reported in a NATO volume. Developmental Neuropathology of Schizophrenia and was edited by Mednick. Cannon. Barr and La Fosse. The current meeting has noted several advances in the field. There are additional psychiatric illnesses which have been found to be related to maternal viral infection in the second trimester. There have been studies reported which have definitely observed a viral infection in the mothers of fetuses who later evidenced schirophrenia. More evidence has been published which has replicated the "second-trimester effect." In the future studies will be wise to provide serological evidence of a viral infection and information on the precise viruses involved. Another important step will be to determine whether second-trimester maternal viral infection is related to a behavioral deficit in the infant. If neural development has been compromised. it might be possible to detect deficits in the infant with the proper measures. We look forward to future meetings at which these new areas might be explored.