Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0036341 (schizophrenia)
 60,220 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Factors influencing prognosis and relapse in schizophrenia were investigated systematically. The results agreed with Jacksonism. Data were collected from 166 patients who suffered relapses and were readmitted to Hospital, into seven categories from Nov 15, 1971 to Dec 31, 1974. The psychiatric symptoms were classified from A to G, positive to negative. The initial symptoms were divided into 4 groups. There was interrelation between the somatic and psychiatric symptoms; in the initial symptoms and the prognosis, courses, and psychiatric symptoms. Based on the author's results, the author suggests that an evolutional and hierarchical interpretation, which Jackson emphasized, in the correlation between brain and mind is applicable in the psychopathology of schizophrenia.
 ...
PMID:Positive and negative symptoms in schizophrenia: application of Jacksonism. 143 12

We used magnetic resonance imaging to examine the morphologic characteristics of the amygdala/hippocampus, prefrontal cortex, and caudate nucleus in 29 healthy volunteers matched for age, gender, and head of household socioeconomic status and 44 patients with chronic schizophrenia. Total volumes of these structures were determined from 3-mm contiguous coronal sections. Schizophrenic patients, compared with healthy controls, had significantly smaller right and left amygdala/hippocampal complex volumes, smaller right and left prefrontal volumes, and larger left caudate volumes. A secondary analysis revealed reductions in the right and left amygdala and the left hippocampus. In addition, prefrontal white matter, but not gray matter, was reduced in the schizophrenic patients. Moreover, the right white matter volume in schizophrenic patients was significantly related to right amygdala/hippocampal volume (r = .39), data that provide preliminary support for a hypothesis of abnormal limbic-cortical connection in schizophrenia. We studied the implications of these data for the pathophysiology of schizophrenia.
Arch Gen Psychiatry 1992 Dec
PMID:Brain morphology and schizophrenia. A magnetic resonance imaging study of limbic, prefrontal cortex, and caudate structures. 794 82

We tested the hypothesis that first-trimester exposure to acute food deprivation is a risk factor for schizophrenia. A sharp and time-limited decline in the food intake of the Dutch population following a Nazi blockade in 1944 to 1945 created a unique if tragic natural experiment to test this hypothesis in three regions of Holland (west, north, and south). In the west, or famine region, birth cohorts exposed to severe food deprivation (an average daily ration under 4200 kJ) during the first trimester showed a substantial increase in hospitalized schizophrenia for women but not for men. Relative risks for women were 2.17 for "broad" and 2.56 for "restricted" schizophrenia. Moderate food deprivation during the first trimester (average daily ration under 6300 kJ) was not associated with increased risk of schizophrenia in the famine region. In the north and south regions, numbers were smaller and there was no exposure to severe famine. Birth cohorts exposed to moderate food deprivation during the first trimester showed a trend toward increased risk of schizophrenia for women. These findings give plausibility to the proposition that early prenatal nutrition can have a gender-specific effect on the risk of schizophrenia.
Arch Gen Psychiatry 1992 Dec
PMID:Schizophrenia after prenatal exposure to the Dutch Hunger Winter of 1944-1945. 816 Dec 94

Several recent studies have examined the manner in which social information is processed in an attempt to better understand the interpersonal functioning deficits of schizophrenia. In this study, the manner in which schizophrenic subjects represent social information, and the relationships between these social representations and measures of information processing, are examined. Specifically, 30 DSM-IIIR patients with schizophrenia and 15 normal controls were assessed on measures of social schema processing, information processing, and symptomatology. Results showed that schizophrenic patients earned significantly lower schema processing scores than the normal comparison group. Schema deficits of the schizophrenic group were significantly associated with recall memory and vigilance. These findings suggest that deficits in the representation of social information provides a unique perspective for understanding the interpersonal dysfunctions of schizophrenia.
Schizophr Res 1992 Dec
PMID:Deficits in social schemata in schizophrenia. 145 91

The National Adult Reading Test (NART) has achieved popularity as a measure of pre-morbid intellectual ability, based on the premises that pronunciation of irregular words is unaffected in many clinical disorders and that performance is highly correlated with general intellectual ability. Recently, schizophrenia research studies have begun to appear in the literature, where the NART has been used to estimate pre-morbid ability. However, this use has preceded the basic required demonstration that, in fact, NART performance is unaffected by the schizophrenic process. In the present study, NART performance was compared across three groups; 20 acutely ill unmedicated DSM-IIIR schizophrenics, 10 other unmedicated acute psychotics, and 20 control subjects. When demographic variability between the groups was controlled for, there were no group differences in terms of NART performance. NART performance was not correlated with Brief Psychiatric Rating Scale scores, and in all three groups, no significant differences emerged when demographically predicted intelligence quotients were compared with NART estimated intelligence quotients. NART performance (predicted on the basis of demographic variables) was not significantly different from observed NART performance in any of the three experimental groups. However, within the sample with schizophrenia, NART estimated pre-morbid IQ was significantly higher than currently measured intellectual abilities. These results suggest that the National Adult Reading Test provides a reasonable estimate of pre-morbid ability in acutely ill, unmedicated schizophrenic patients.
Schizophr Res 1992 Dec
PMID:Selecting controls for schizophrenia research studies: the use of the National Adult Reading Test (NART) is a measure of premorbid ability. 145 92

Experimental assessments of semantic memory structure and function in schizophrenic subjects can be a useful approach for delineating some of the information processing deficits in schizophrenia. In this study, a pronunciation and a lexical decision semantic priming experiment were conducted with 19 schizophrenic subjects and 20 normal controls. A short stimulus-onset asynchrony (250 msec) and a relatively low proportion of related prime-target pairs were used in order to examine automatic priming and in order to avoid the contribution of attentional, controlled processes. On the pronunciation task, schizophrenic subjects showed a significant priming effect, equal to the priming shown by normal controls. However, on the lexical decision task, schizophrenics, unlike normal controls, did not show a priming effect which is significantly greater than zero, even though the group difference in priming effect (interaction of priming effect by group) was nonsignificant. The lack of priming on the lexical decision task is consistent with the hypothesis that schizophrenic subjects may show abnormalities in the realm of post-lexical, controlled information processing. The equal-to-normal priming for schizophrenic subjects indicates that the basic structure of the semantic network, including associations among related concepts, is intact in schizophrenia, and that spreading activation also occurs normally.
Schizophr Res 1992 Dec
PMID:Semantic priming of word pronunciation and lexical decision in schizophrenia. 145 95

This study compared evoked potential (EP) topography in major depression (MD), schizophrenia and nonpatient controls. EPs to four kinds of stimuli were recorded from 15 locations. Patients were 69 MDs and 52 schizophrenics, currently unmedicated. EP waveforms of 195 controls were subjected to principal component factor analysis (PCA). The structures of 32 factors so extracted have been shown to encompass the data space of disparate groups; they were used to compute factor scores for all subjects. Age- and gender-matched groups were compared. Factor scores were normalized across leads (Z-transform) to distinguish between topographic and mean level differences. Topographic differences (P < 0.05) between MD and controls were demonstrated for scores of 8 factors, with 2 others at P = 0.053. Unlike those for schizophrenia/control comparisons, these topographic differences did not converge regionally in MD. EP findings were not related to duration of withdrawal from drugs. There were few differences between bipolar and unipolar patients. Topographies of 5 factors differed between MDs and schizophrenics; these involved all modalities and reflected long latency, cognition-related events, such as P300. These topographic differences were antero-posterior (AP); values were greater posteriorly in MDs and anteriorly in schizophrenics. Deviant AP gradients appear specific to MD; gradients were similar in schizophrenics and controls.
Int J Psychophysiol 1992 Dec
PMID:Evoked potential topography in major depression. I. Comparisons with nonpatients and schizophrenics. 145 81

The problem of substance abuse disorders in schizophrenia patients is reviewed, including the prevalence of co-morbid disorders, assessment, hypothesized mechanisms underlying abuse, and the clinical effects of abuse on the course of illness and cognitive functioning. The principles of treatment for dual-diagnosis schizophrenia patients are outlined, and the limitations of existing interventions are noted. Gaps in current knowledge about the impact of substance abuse on schizophrenia and its treatment are identified, and suggestions are made regarding promising avenues of research in this area.
J Consult Clin Psychol 1992 Dec
PMID:Comorbidity of schizophrenia and substance abuse: implications for treatment. 146 Jan 48

Standardized structured interview personality scales are now available that provide better reliability than clinician interview, but are still imperfect. These scales diagnose DSM III-R personality disorders, which are more illness-oriented than Freudian notions. Use of these scales has found that the majority of patients with OCD have at least one Axis II personality disorder, with most falling in cluster C. Obsessive compulsive personality disorder, as described in DSM-III-R, is, in most samples studied, present in the minority of patients with OCD, and is often less common than other personality disorders such as mixed, dependent, avoidant, and histrionic. The prevalence of this personality disorder as modified in DSM-III-R (making it easier for a patient to qualify for this personality disorder diagnosis) appears to be higher, although still present in a minority of patients with OCD. Obsessive compulsive personality disorder (along with the other cluster B and C personality disorders) has not been reported to have a consistent relation to treatment outcome. There is evidence that in some cases, obsessive compulsive personality disorder may be secondary to OCD. Swedo et al hypothesized that some children may develop compulsive personality traits as an adaptive mechanism to deal with OCD. This hypothesis is in accord with our finding that OCD often predates compulsive personality disorder and that mixed personality disorder may develop over time, possibly secondary to OCD. We found in our sample of 96 adult patients with OCD that the presence of mixed personality disorder was more likely with longer duration of OCD, suggesting that patients who do not have premorbid personality disorders may develop significant personality traits (especially avoidant, compulsive, and dependent), which may be related to behavioral and life-style changes that are secondary to OCD. This hypothesis is strengthened by our finding that patients with one of these personality disorders at baseline tended to no longer meet criteria for them following successful treatment of their OCD. It now appears that schizotypal personality disorder, which is thought to be related genetically to schizophrenia (e.g., in three male identical twin pairs concordant for OCD but discordant for schizophrenia or schizoaffective disorder, the nonpsychotic co-twins all had schizotypal personality disorder), is the only consistent personality disorder predictor of poorer outcome in OCD. These traits may help explain other proposed poor predictors of treatment outcome such as overvalued beliefs, poor compliance, and chaotic family situations.(ABSTRACT TRUNCATED AT 400 WORDS)
Psychiatr Clin North Am 1992 Dec
PMID:Personality disorders in obsessive compulsive disorder. 146 97

Schizophrenia is a major psychiatric problem common in the younger population. Structural imaging and findings on autopsy have not yet revealed a specific deficit in these patients. Uncertainty in clinical diagnosis based on a set of signs and symptoms is another drawback in the management of this patient population. Regional cerebral blood flow studies (rCBF) using single photon emission computed tomography (SPECT) offers the opportunity to study the underlying phenomenon and to detect the specific functional deficits in schizophrenia.
Nucl Med Commun 1992 Dec
PMID:What does rCBF-SPECT offer in schizophrenia? 146 71


<< Previous 1 2 3 4 5 6 7 8 9 10 Next >>