scholarly journals Neurodevelopmental correlates in schizophrenia

2003 ◽  
Vol 131 (7-8) ◽  
pp. 294-299 ◽  
Author(s):  
Maja Ivkovic ◽  
Aleksandar Damjanovic ◽  
Vladimir Paunovic
Keyword(s):  
Developmental Disorders ◽  
Healthy Controls ◽  
Birth Complications ◽  
Maternal Recall ◽  
Structural Abnormalities ◽  
Schizophrenic Patients ◽  
Schizophrenic Group ◽  
Neuro Imaging ◽  
Minor Physical Anomalies

Contemporary aetiopathogenetic considerations, based on neuro-imaging genetic and developmental neurobiology studies, suggest neurodevelopmental origin of schizophrenia. Several lines of evidence including structural abnormalities on in vivo brain imaging, the excess of prenatal and obstetric complications and the association of congenital and minor physical anomalies with schizophrenia, strongly indicate the neurodevelopmental pathogenesis of schizophrenia. On the other hand, controversial concept of psychotic continuum suggests schizophrenia and depression sharing the same genetic contribution to the pathogenesis. If this would be the case, depression could also be considered as neuro developmental disorder. The aims of the study were to investigate the association between: a) pregnancy and birth complications (PBC), and b) minor physical anomalies (MPA) and schizophrenia or depression. Experimental groups consisted of 60 schizophrenic, 28 major depression patients and 30 healthy controls. All patients were diagnosed according to DSM-IV. Schizophrenic group was divided with regard to PANSS score into positive (n=32) and negative form (n=28) subgroups. PBC information were gathered from maternal recall while MPA were examined by using Waldrop scale for adults. The results showed that negative and positive schizophrenic subgroups had significantly more PBC than depressive group (p<0,05), as well than controls (p<0,001; p<0,05; respectively). There was no significant trend for more PBC in negative than in positive subgroup. All schizophrenic patients had higher rates of MPA than depressives (p<0,05). This trend for more MPA was not significant in comparison with healthy controls. These findings suggest that schizophrenia, especially its negative forms, could be considered as a member of the spectrum of neuro developmental disorders, which does not seem to be the case with depression. PBC and MPA could also be valuable in evaluation of risks for schizophrenia and possible predictive indicators of its development.

Laterality of visuo-spatial attention in acute and chronic schizophrenia, major depression and in healthy controls

1995 ◽  
Vol 25 (5) ◽  
pp. 1091-1095 ◽  
Author(s):  
R. E. O'Carroll ◽  
A. Rogers ◽  
S. M. Lawrie ◽  
C. Murray ◽  
M. Van Beck ◽  
...  
Keyword(s):  
Major Depression ◽  
Spatial Attention ◽  
Chronic Schizophrenia ◽  
Healthy Controls ◽  
Opposite Pattern ◽  
Chronic Schizophrenic ◽  
Schizophrenic Patients ◽  
Schizophrenic Group ◽  
Two Measures

SYNOPSISPrevious studies have suggested that schizophrenia is characterized by an asymmetry of visuo-spatial attention, in particular that acute unmedicated schizophrenics demonstrate relative inattention to right hemispace, whereas chronically medicated patients demonstrate the opposite pattern. In the present study, 30 unmedicated schizophrenic patients, 32 chronically medicated schizophrenic patients, 30 patients suffering from major depression and 60 healthy controls were assessed using two measures of hemispatial attentional neglect, namely letter and star cancellation. The results demonstrated that the chronic schizophrenic group made more total omissions for star cancellation (in both right and left hemispace), but that there was no difference between the groups in terms of omission asymmetry for either letter or star cancellation.

scholarly journals High Order Linguistic Features Such as Ambiguity Processing as Relevant Diagnostic Markers for Schizophrenia

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Daniel Ketteler ◽  
Anastasia Theodoridou ◽  
Simon Ketteler ◽  
Matthias Jäger
Keyword(s):  
High Order ◽  
Test Battery ◽  
Healthy Controls ◽  
Linguistic Features ◽  
Performance Deficits ◽  
Linguistic Performance ◽  
Order Language ◽  
Function Test ◽  
Schizophrenic Patients ◽  
Schizophrenic Group

Due to the deficits of schizophrenic patients regarding the understanding of vague meanings (D. Ketteler and S. Ketteler (2010)) we develop a special test battery called HOLF (high order linguistic function test), which should be able to detect subtle linguistic performance deficits in schizophrenic patients. HOLF was presented to 40 schizophrenic patients and controls, focussing on linguistic features such as ambiguity, synonymy, hypero-/hyponymy, antinomy, and adages. Using the HOLF test battery we found that schizophrenic patients showed significant difficulties in discriminating ambiguities, hypero- and hyponymy, or synonymy compared to healthy controls. Antonyms and adages showed less significant results in comparing both groups. The more difficult a linguistic task was, the more confusion was measured in the schizophrenic group while healthy controls did not show significant problems in processing high order language tasks.

scholarly journals Peripheral Non-enzymatic Antioxidants in Patients with Schizophrenia：A Case-control Study

2020 ◽  
Author(s):  
Zhe Lu ◽  
Tianyang Wen ◽  
Yingtan Wang ◽  
Weijing Kan ◽  
Guanglei Xun
Keyword(s):  
Acute Stage ◽  
Free Subgroup ◽  
Antioxidant Systems ◽  
Enzymatic Antioxidants ◽  
Healthy Controls ◽  
Significant Difference ◽  
Before And After ◽  
Schizophrenic Patients ◽  
Oxidation System

Abstract Background: Recent studies show that oxidative stress is associated with the pathogenesis of schizophrenia. There are two major types of antioxidant systems in vivo, namely enzymatic antioxidants and non-enzymatic antioxidants. This study investigated differences of non-enzymatic antioxidants between schizophrenia patients and healthy controls. Methods: Peripheral UA, ALB, and TBIL of 107 schizophrenic patients in the acute stage and 101 in the remission stage were measured respectively, so were 273 healthy controls. Results: The levels of UA ( P =0.020) and TBIL ( P <0.001) of schizophrenic patients in acute stage were higher than those of healthy controls, while the level of ALB ( P <0.001) was lower. Similar results were detected form schizophrenic patients in the remission stage. Schizophrenic patients in acute stage were divided into antipsychotics-use subgroup (n=56) and antipsychotics-naïve/free subgroup (n=51). The level of UA ( P =0.001) in the antipsychotics-use subgroup was higher than that in the antipsychotics-naïve/free subgroup, while the level of TBIL ( P =0.002) was lower than that in antipsychotics-naïve/free subgroup. 77 schizophrenic patients in the acute stage were followed up, and there was no significant difference in the level of UA before and after treatment, but levels of ALB ( P <0.001) and TBIL ( P <0.001) decreased significantly after the treatment. Conclusion: This study demonstrated that the dysfunction of the peripheral non-enzymatic anti-oxidation system might be involved in the pathogenesis of schizophrenia.

scholarly journals Peripheral Non-enzymatic Antioxidants in Patients with Schizophrenia：A Case-control Study

2019 ◽  
Author(s):  
Zhe Lu ◽  
Tianyang Wen ◽  
Yingtan Wang ◽  
Weijing Kan ◽  
Guanglei Xun
Keyword(s):  
Acute Stage ◽  
Free Subgroup ◽  
Antioxidant Systems ◽  
Enzymatic Antioxidants ◽  
Healthy Controls ◽  
Significant Difference ◽  
Before And After ◽  
Schizophrenic Patients ◽  
Oxidation System

Abstract Background: Recent studies show that oxidative stress is associated with the pathogenesis of schizophrenia. There are two major types of antioxidant systems in vivo, namely enzymatic antioxidants and non-enzymatic antioxidants. This study investigated the differences of non-enzymatic antioxidant between schizophrenia patients and healthy controls. Methods: Peripheral UA, ALB and TBIL were measured respectively in 107 schizophrenic patients in acute stage and in 101 schizophrenic patients in remission stage, as well as in 273 healthy controls. Results: The levels of UA (P=0.020) and TBIL (P<0.001) in schizophrenic patients in acute stage were higher than healthy controls, and the level of ALB (P<0.001) was lower. Similar results were detected in schizophrenic patients in remission stage. Schizophrenic patients in acute stage were divided into antipsychotics-use subgroup (n=56) and antipsychotics-naïve/free subgroup (n=51). The level of UA (P=0.001) in antipsychotics-use subgroup was higher than that in antipsychotics-naïve/free subgroup, while the level of TBIL (P=0.002) was lower than that in antipsychotics-naïve/free subgroup. 77 schizophrenic patients in acute stage were followed up, and there was no significant difference in level of UA before and after treatment, but levels of ALB (P<0.001) and TBIL (P<0.001) decreased significantly after the treatment. Conclusion: This study demonstrated that the dysfunction of peripheral non-enzymatic anti-oxidation system might be involved the pathogenesis of schizophrenia. Keywords: Schizophrenia; Uric acid; Albumin; Total bilirubin

Patterns of cortical activity in schizophrenia

1994 ◽  
Vol 24 (4) ◽  
pp. 947-955 ◽  
Author(s):  
J. Schroeder ◽  
M. S. Buchsbaum ◽  
B. V. Siegel ◽  
F. J. Geider ◽  
R. J. Haier ◽  
...  
Keyword(s):  
Temporal Lobe ◽  
Parietal Cortex ◽  
Hemispheric Asymmetry ◽  
Performance Test ◽  
Temporal Cortex ◽  
Continuous Performance Test ◽  
Healthy Controls ◽  
Positron Emission ◽  
Schizophrenic Patients ◽  
Schizophrenic Group

SynopsisEighty-three patients with schizophrenia and 47 healthy controls received positron emission tomography (PET) with 18F-2-deoxyglucose uptake while they were executing the Continuous Performance Test (CPT). The entire cortex was divided into 16 regions of interest in each hemisphere, four in each lobe of the brain, and data from corresponding right and left hemispheric regions were averaged. Data from the schizophrenic patients were subjected to a factor analysis, which revealed five factors that explained 80% of the common variance. According to their content, the factors were identified and labelled ‘parietal cortex and motor strip’, ‘associative areas’, ‘temporal cortex’, ‘hypofrontality’ (which included midfrontal and occipital areas) and ‘frontal cortex’. Hemispheric asymmetry was only confirmed for the temporal cortex. Factor weights obtained in the schizophrenic group were applied to the metabolic data of the healthy controls and factor scales computed. Schizophrenics were significantly more hypofrontal than the controls, with higher values on the ‘parietal cortex and motor strip’ factor and a trend towards higher values in the temporal cortex. A canonical discriminant analysis confirmed that the ‘hypofrontality’ and ‘parietal cortex and motor strip’ factors accurately separated the schizophrenic group from the healthy controls. Hemispheric asymmetry was only confirmed for the temporal lobe. Significantly higher factor scores for the left temporal lobe in schizophrenics than in normals were obtained when calculated for the right and left hemisphere separately. Taken together, our results confirm the importance of hypofrontality as a pattern of cortical metabolic rate and point to the potential importance of parietal and motor strip function in schizophrenia.

scholarly journals Peripheral Non-enzymatic Antioxidants in Patients with Schizophrenia：A Case-control Study

2019 ◽  
Author(s):  
Zhe Lu ◽  
Tianyang Wen ◽  
Yingtan Wang ◽  
Weijing Kan ◽  
Guanglei Xun
Keyword(s):  
Acute Stage ◽  
Free Subgroup ◽  
Antioxidant Systems ◽  
Enzymatic Antioxidants ◽  
Healthy Controls ◽  
Significant Difference ◽  
Before And After ◽  
Schizophrenic Patients ◽  
Oxidation System

Abstract Background: Recent studies show that oxidative stress is associated with the pathogenesis of schizophrenia. There are two major types of antioxidant systems in vivo, namely enzymatic antioxidants and non-enzymatic antioxidants. This study investigated differences of non-enzymatic antioxidant between schizophrenia patients and healthy controls. Methods: Peripheral UA, ALB and TBIL of 107 schizophrenic patients in acute stage and 101 in remission stage were measured respectively, so were 273 healthy controls. Results: The levels of UA (P=0.020) and TBIL (P<0.001) of schizophrenic patients in acute stage were higher than those of healthy controls, while the level of ALB (P<0.001) was lower. Similar results were detected form schizophrenic patients in remission stage. Schizophrenic patients in acute stage were divided into antipsychotics-use subgroup (n=56) and antipsychotics-naïve/free subgroup (n=51). The level of UA (P=0.001) in antipsychotics-use subgroup was higher than that in antipsychotics-naïve/free subgroup, while the level of TBIL (P=0.002) was lower than that in antipsychotics-naïve/free subgroup. 77 schizophrenic patients in acute stage were followed up, and there was no significant difference in level of UA before and after treatment, but levels of ALB (P<0.001) and TBIL (P<0.001) decreased significantly after the treatment. Conclusion: This study demonstrated that the dysfunction of peripheral non-enzymatic anti-oxidation system might be involved in the pathogenesis of schizophrenia. Keywords: Schizophrenia; Uric acid; Albumin; Total bilirubin

scholarly journals Peripheral Non-enzymatic Antioxidants in Patients with Schizophrenia：A Case-control Study

2020 ◽  
Author(s):  
Zhe Lu ◽  
Tianyang Wen ◽  
Yingtan Wang ◽  
Weijing Kan ◽  
Guanglei Xun
Keyword(s):  
Acute Stage ◽  
Free Subgroup ◽  
Antioxidant Systems ◽  
Enzymatic Antioxidants ◽  
Healthy Controls ◽  
Significant Difference ◽  
Before And After ◽  
Schizophrenic Patients ◽  
Oxidation System

Abstract Background: Recent studies show that oxidative stress is associated with the pathogenesis of schizophrenia. There are two major types of antioxidant systems in vivo, namely enzymatic antioxidants and non-enzymatic antioxidants. This study investigated differences of non-enzymatic antioxidant between schizophrenia patients and healthy controls. Methods: Peripheral UA, ALB and TBIL of 107 schizophrenic patients in acute stage and 101 in remission stage were measured respectively, so were 273 healthy controls. Results: The levels of UA ( P =0.020) and TBIL ( P <0.001) of schizophrenic patients in acute stage were higher than those of healthy controls, while the level of ALB ( P <0.001) was lower. Similar results were detected form schizophrenic patients in remission stage. Schizophrenic patients in acute stage were divided into antipsychotics-use subgroup (n=56) and antipsychotics-naïve/free subgroup (n=51). The level of UA ( P =0.001) in antipsychotics-use subgroup was higher than that in antipsychotics-naïve/free subgroup, while the level of TBIL ( P =0.002) was lower than that in antipsychotics-naïve/free subgroup. 77 schizophrenic patients in acute stage were followed up, and there was no significant difference in level of UA before and after treatment, but levels of ALB ( P <0.001) and TBIL ( P <0.001) decreased significantly after the treatment. Conclusion: This study demonstrated that the dysfunction of peripheral non-enzymatic anti-oxidation system might be involved in the pathogenesis of schizophrenia. Keywords: Schizophrenia; Uric acid; Albumin; Total bilirubin

scholarly journals Iron accumulation in the oculomotor nerve of the progressive supranuclear palsy brain

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hansol Lee ◽  
Myung Jun Lee ◽  
Eun-Joo Kim ◽  
Gi Yeong Huh ◽  
Jae-Hyeok Lee ◽  
...  
Keyword(s):  
High Resolution ◽  
Progressive Supranuclear Palsy ◽  
Oculomotor Nerve ◽  
Iron Accumulation ◽  
Blue Staining ◽  
Normal Brain ◽  
Myelinated Fiber ◽  
Healthy Controls ◽  
Icp Ms

AbstractAbnormal iron accumulation around the substantia nigra (SN) is a diagnostic indicator of Parkinsonism. This study aimed to identify iron-related microarchitectural changes around the SN of brains with progressive supranuclear palsy (PSP) via postmortem validations and in vivo magnetic resonance imaging (MRI). 7 T high-resolution MRI was applied to two postmortem brain tissues, from one normal brain and one PSP brain. Histopathological examinations were performed to demonstrate the molecular origin of the high-resolution postmortem MRI findings, by using ferric iron staining, myelin staining, and two-dimensional laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) imaging. In vivo iron-related MRI was performed on five healthy controls, five patients with Parkinson’s disease (PD), and five patients with PSP. In the postmortem examination, excessive iron deposition along the myelinated fiber at the anterior SN and third cranial nerve (oculomotor nerve) fascicles of the PSP brain was verified by LA-ICP-MS. This region corresponded to those with high R2* values and positive susceptibility from quantitative susceptibility mapping (QSM), but was less sensitive in Perls’ Prussian blue staining. In in vivo susceptibility-weighted imaging, hypointense pixels were observed in the region between the SN and red nucleus (RN) in patients with PSP, but not in healthy controls and patients with PD. R2* and QSM values of such region were significantly higher in patients with PSP compared to those in healthy controls and patients with PD as well (vs. healthy control: p = 0.008; vs. PD: p = 0.008). Thus, excessive iron accumulation along the myelinated fibers at the anterior SN and oculomotor nerve fascicles may be a pathological characteristic and crucial MR biomarker in a brain with PSP.

scholarly journals The Course of AαVal541 as a Proteinase 3 Specific Neo-Epitope after Alpha-1-Antitrypsin Augmentation in Severe Deficient Patients

2021 ◽  
Vol 22 (15) ◽  
pp. 8031
Author(s):  
Iris G. M. Schouten ◽  
Richard A. Mumford ◽  
Dirk Jan A. R. Moes ◽  
Pieter S. Hiemstra ◽  
Jan Stolk
Keyword(s):  
Plasma Level ◽  
Serine Proteases ◽  
Population Pharmacokinetic ◽  
Proteinase 3 ◽  
Healthy Controls ◽  
Population Pharmacokinetic Modeling ◽  
Antitrypsin Deficiency ◽  
Alpha 1 Antitrypsin Deficiency ◽  
Alpha 1 Antitrypsin

In alpha-1-antitrypsin deficiency (AATD), neutrophil serine proteases such as elastase and proteinase 3 (PR3) are insufficiently inhibited. A previous study in AATD patients showed a higher plasma level of the specific PR3-generated fibrinogen-derived peptide AαVal541, compared with healthy controls. Here, we analyzed the course of AαVal541 plasma levels during 4 weeks after a single iv dose of 240 mg/kg AAT in ten patients with genotype Z/Rare or Rare/Rare. To this end, we developed an immunoassay to measure AαVal541 in plasma and applied population pharmacokinetic modeling for AAT. The median AαVal541 plasma level before treatment was 140.2 nM (IQR 51.5–234.8 nM)). In five patients who received AAT for the first time, AαVal541 levels decreased to 20.6 nM (IQR 5.8–88.9 nM), and in five patients who already had received multiple infusions before, it decreased to 26.2 nM (IQR 22.31–35.0 nM). In 9 of 10 patients, AαVal541 levels were reduced to the median level of healthy controls (21.4 nM; IQR 16.7–30.1 nM). At 7–14 days after treatment, AαVal541 levels started to increase again in all patients. Our results show that fibrinopeptide AαVal541 may serve as a biochemical footprint to assess the efficacy of in vivo inhibition of PR3 activity in patients receiving intravenous AAT augmentation therapy.

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