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Query: UMLS:C0036341 (schizophrenia)
 60,220 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The literature on schizophrenia has reported a trend toward higher concordance rates for females in both monozygotic and dizygotic same-sexed twins. The validity of this finding is open to question. Rosenthal (1961 and 1962) pointed out that females are more likely than males to become inhabitants of chronic wards. Most of the studies reporting a sex difference used resident hospital populations. Gottesman and Shields (1972) noted that the sex difference disappeared when samples were based upon consecutive admissions. Sex differences have vanished in recent studies both as a result of changing research methods and the changing role of women in society.
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PMID:Sex differences in concordance rates for schizophrenia: finding or artifact? 74 60

The Genain quadruplets are a unique set of monozygous women who are concordant for schizophrenia but discordant for the severity of their disorder. They were studied by David Rosenthal and colleagues at the National Institute of Mental Health in the late 1950's when they were in their twenties and again in 1981 when they were 51. They are faring about as well now as they ever have in their adult lives. The results of psychological tests, some of which were repeated more than 20 years apart, are discussed, as are the effects of medication on attention and memory. The differential response of the Genains to neuroleptic drugs, as well as certain other findings in the 1981 study, leads to a different conclusion about the discordant severity of their disorder from that reached in 1963 by Rosenthal and Quinn. These observations emphasize the value of long-term followup studies in genetically related individuals, with repeated assessments of the same functions.
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PMID:The Genain quadruplets. 290 29

Since its creation in 1954 (as the Laboratory of Psychology) through the present time, the Laboratory of Psychology and Psychopathology has devoted a major effort to the study of schizophrenia. Shakow's studies on impaired reaction time performance led to the development of the concept of segmental set; Rosenthal's work on genetic factors in the etiology of schizophrenia, as well as on the interaction of stress and diathesis, helped to illuminate the nature of transmission of schizophrenia. These investigations set standards of excellence for careful analysis of psychopathological behavior. Our present program of research on schizophrenia emphasizes autonomic, psychophysiological and event-related brain potential investigations of schizophrenic patients and long-term followup of a high-risk population in Israel. In this group, poor attention in children at genetic risk has proved to be a predictor of later development of a schizophrenia spectrum disorder. Our work also emphasizes a theoretical analysis of the neuropsychological elements that make up attention in relation to psychopathological states.
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PMID:Research on schizophrenia in the NIMH Laboratory of Psychology and Psychopathology, 1954-1987. 305 64

Less than two decades ago scientists interested in the etiology of schizophrenia were still vigorously debating the nature-nurture controversy, with many adhering to the view that the illness grew either out of a constitutional deficit or a pathological family environment. Today, virtually all researchers adopt interactional models that include both constitutional and environmental factors. Interactional models are most often expressed in diathesis-stress terms: Development of schizophrenia requires both a biological vulnerability (diathesis) and stressful life circumstances that facilitate expression of the illness. Modern debate within the field now primarily focuses on understanding the characteristics of the biological diathesis, the stressful environment, and their interaction. Scientists using diathesis-stress theories have employed several research strategies (Rosenthal 1970): (1) consanguinity studies exploring the distribution of illness among the relatives of schizophrenics, (2) twin studies comparing the concordance of schizophrenic illness in monozygotic and dizygotic twin pairs reared together or apart, (3) retrospective studies examining the premorbid behavior and development of schizophrenic parents, and (4) prospective studies of children at high risk for schizophrenia. The population most frequently followed in prospective high-risk studies has been offspring of schizophrenics. Biological offspring of schizophrenics who are reared by their parents are at extremely high risk for becoming schizophrenic themselves, approximately ten times greater risk than the general population. The present paper will make use of the Israeli High-Risk Study to test a diathesis-stress model for the transmission of schizophrenia. The goodness of fit of this model to the data will be explored using a simple decision tree data analytic approach.
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PMID:A process model for the development of schizophrenia. 342 61

A series of behavioral studies is reported on the Genain Quadruplets. These monozygous women, all of whom have suffered or are suffering from schizophrenia, were studied previously at the National Institute of Mental Health (1955-1958) and were the subject of an extensive report by Rosenthal (1963). Although the Genains are genetically identical, the expression of the schizophrenic disorder is unequal among the quads, and this circumstance has led to speculation about the relative contributions of nature and nurture (or diathesis and stress in Rosenthal's terminology) in the development of this disease. Two goals were pursued in this investigation: one concerned a comparison of the status of the Genains in 1981 as compared with 1958; the other concerned whether data from the armamentarium of newer behavioral and neurobiological techniques invented and employed since 1958 might shed some light on the unequal expression of schizophrenia among the quadruplets. We conclude that the Genains are functioning about as well as they ever have in their adult lives, and scores on attentional tests show improvement as compared to 1958 measures. This is probably attributable to the medication (primarily neuroleptics) and other supportive treatments they have received over the years. With respect to the varying degrees of illness seen in the Genains, scrutiny of the biochemical, physiological, neuroradiological, immunogenetic, and behavioral test data leads to speculation that certain unique biochemical findings interacting with differing types and amounts of cerebral pathology constitute a major cause of the variable expression of the schizophrenic diathesis.
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PMID:The Genain Quadruplets: psychological studies. 615 Dec 5

Previous studies by the author and his collaborators, Rosenthal, Wender, Schulsinger, and Jacobsen, of the biological and adoptive relatives of schizophrenic adoptees are reviewed in conjunction with more recent studies by Spitzer and Endicott and by Kendler, Gruenberg, and Strauss, who independently made operational diagnoses using the Research Diagnostic Criteria or DSM-III specifications, both of which showed good agreement with the authors' global diagnoses based on the descriptions in DSM-II. Both the DSM-III diagnoses and the authors' global diagnoses found a highly significant concentration of chronic, latent, and uncertain schizophrenia or schizotypal personality disorder in the biological relatives of adoptees who developed chronic schizophrenia. A response is made to recent criticisms published in this journal by Lidz and Blatt and by Abrams and Taylor.
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PMID:Mental illness in the biological and adoptive relatives of schizophrenic adoptees: findings relevant to genetic and environmental factors in etiology. 634 26

Rosenthal and colleagues earlier compared the frequency of schizophrenia spectrum disorders in two groups of persons adopted in infancy or early childhood: those with a psychotic parent (index group) and those whose biological parents had never had a psychiatric diagnosis or treatment (control group). They found significantly more disorder in the index group. Reanalysis of the original material using DSM-III and stricter exclusionary criteria applied to the parents yielded three times as many schizophrenia spectrum disorders in the index as in the control group. This difference remained statistically significant, supporting the operation of genetic factors in the transmission of the traits comprising the schizophrenic spectrum of disorders.
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PMID:The inheritance of schizophrenia spectrum disorders: a reanalysis of the Danish adoptee study data. 661 22

In an effort at replication of the original report (Rosenthal and Bigelow, 1972) of increased callosal thickness in schizophrenic brains, the corpus callosum was measured in a blind study of 64 brains autopsied between the years 1972 and 1976. Diagnosis was established by independent chart review. The mean corpus callosum mid sections of 21 early onset chronic schizophrenic brains were found to have a significantly greater thickness when compared with 8 subjects with late onset schizophrenia, 13 patients with neurological diagnoses, or 14 patients with other psychiatric diagnoses. These studies, if independently confirmed, should provide an impetus for testing the hypothesis that some chronic schizophrenic patients have an illness associated with a pathological process in the corpus callosum.
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PMID:Corpus callosum thickness in chronic schizophrenia. 686 Aug 81

We report a neuropathological case of the brain of a 22-year-old male solvent abuser. He had also been diagnosed as suffering from schizophrenia. Neurohistology revealed the presence of Rosenthal fibers (RFs) in subpial and perivascular collections in the medulla, the floor of the 3rd and 4th ventricles, and also in the spinal cord. There was mild demyelination in the frontal, temporal, and parietal lobes, as well as the left dorsal column in the spinal cord. There was bilateral basal ganglia calcification. Demyelination and RFs have been the hallmark of the diagnosis of adult Alexander's disease. We urge that these are insufficient criteria for this nosological category, and suggest the alternative and more appropriate label of Rosenthal fiber encephalopathy. In view of the known toxic, clinical effects of chronic solvent abuse, and the lack of knowledge of the neuropathological effects, we also tentatively note the association of the solvent abuse with the neuropathology, but are unable to assert any causal link.
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PMID:Rosenthal fiber encephalopathy presenting with demyelination and Rosenthal fibers in a solvent abuser: adult Alexander's disease? 899 49

Social cognition in relation to schizophrenia liability remains largely uncharted terrain. Successful social interactions involve sensitivity to the feelings and behavior of others, and the ability to convey and communicate cues to elicit desired responses from others. Disruption in any part of this process will affect social interactions and functioning, including occupational functioning. Individuals who do better on tasks measuring interpersonal sensitivity are more interpersonally skilled and better adjusted (Hall, Andrzejewski, & Yopchick, 2009), and those who perform poorly on tasks of interpersonal sensitivity, such as patients with schizophrenia, have known interpersonal and social functioning deficits (e.g., Toomey, Schuldberg, Corrigan, & Green, 2002). Schizotypic subjects were compared to depression vulnerable and normal control subjects on a well-established dynamic test of interpersonal sensitivity, the Profile of Nonverbal Sensitivity (PONS; Rosenthal, Hall, DiMatteo, Rogers, & Archer, 1979, 2011). Results revealed a deficit for schizotypes relative to both the depression-risk and normal control groups on the PONS. Our examination of the interpersonal sensitivity in schizotypes may shed light on the social functioning problems seen in patients with schizophrenia in a translational research framework.
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PMID:Schizotypy, social cognition, and interpersonal sensitivity. 2264 63


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