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1.
Rukmini M. S. Benedicta D'Souza Vivian D'Souza 《Indian journal of clinical biochemistry : IJCB》2004,19(2):114-118
Free radical mediated pathological processes may have a role in schizophrenia. Free radicals (oxy radicals, such as superoxide,
hydroxyl ions and nitric oxide) cause cell injury, when they are generated in excess or when the antioxidant defense is impaired.
Both these processes seem to be affected in schizophrenia. In this study we investigated erythrocyte superoxide dismutase
(SOD) and catalase (CAT) activities as antioxidant enzymes, malondialdehyde (MDA) as a sign of lipid peroxidation in schizophrenic
patients. Activities of superoxide dismutase, catalase and malondialdehyde were greater in patients compared with the control
group which may reflect increased oxidative stress in the brain tissue of schizophrenics. In the patient group erythrocyte
SOD and CAT activities were weakly negative correlated with MDA concentration. These data reveal that antioxidant defense
mechanisms might be impaired in schizophrenic patients. These findings also provide a theoretical basis for the development
of novel therapeutic strategies, such as antioxidant supplementation. 相似文献
2.
Priya Allimuthu Hanumanthappa Nandeesha Raghavi Chinniyappan Balaji Bhardwaz Jesudas Blessed raj 《Indian journal of clinical biochemistry : IJCB》2021,36(3):365
Hormonal imbalance, inflammation and alteration in synaptic plasticity are reported to play a crucial role in the pathogenesis of schizophrenia. The objective of the study was to assess the serum levels of brain derived neurotrophic factor (BDNF) and its association with interleukin-23 (IL-23), testosterone and disease severity in schizophrenia. 40 cases and 40 controls were included in the study. Serum levels of BDNF, IL-23 and testosterone were estimated in all the subjects. Disease severity was assessed using Positive and Negative Syndrome Scale (PANSS). The study was designed in Tertiary care hospital, South India. The results were compared between two groups using Mann–Whitney U test. Spearman Correlation analysis was used to assess the association between biochemical parameters and PANSS. Interleukin-23 and testosterone were significantly increased and BDNF was significantly reduced in schizophrenia cases when compared with controls. BDNF was negatively correlated with IL-23 (r = − 400, p = 0.011), positive symptom subscale (r = − 0.393, p = 0.012), general psychopathology score subscale (r = − 407, p = 0.009) and total symptom subscale (r = − 404, p = 0.010). There was no significant association of IL-23 and testosterone with disease severity in schizophrenia cases. BDNF was reduced in schizophrenia cases and negatively associated with interleukin-23 and disease severity scores. 相似文献
3.
Gora Dadheech Praveen Sharma Shiv Gautam 《Indian journal of clinical biochemistry : IJCB》2012,27(3):278-283
Reactive oxygen species (ROS) formed in various metabolic reactions cause unlimited damage by attacking and oxidizing the macromolecules. An arsenal of antioxidant substances neutralizes these ROS at various sites of their metabolic cascade, and if disequilibrium exists between the pro and antioxidant system, oxidative stress persists. The present study was undertaken in schizophrenia, to highlight the response and role of some endogenous antioxidants viz. reduced glutathione (GSH), bilirubin, total proteins, albumin and uric acid in scavenging the ROS. The effect of severity of disease, age factor, and substance abuse was also studied. In all, 50 schizophrenics and 50 age and sex-matched controls were enrolled in the present study. Fasting blood samples were drawn for estimating malondialdehyde (MDA), GSH, bilirubin, total proteins, albumin and uric acid in both the groups. The results were statistically analyzed by Z-test and correlated using correlation coefficient (r). The study shows reduction in MDA levels and decline in the level of endogenous antioxidants, but within the normal range. Chronic schizophrenics were at a higher risk of oxidative stress and age and substance abuse seems to worsen the situation. 相似文献
4.
Imbalanced free radicals and antioxidant defense systems in schizophrenia： A comparative study 总被引：2，自引：0，他引：2
Objective： To examine changes of blood oxidative-antiovidative level in schizophrenic patients and its relationship with clinical symptoms. Methods： Forty-six Chinese patients met DSM-IV （Diagnostic and Statistical Manual of Mental Disorders-iV） criteria for schizophrenia and fifty age- and sex-matched healthy controls were enrolled in the present study. Baseline psychiatric symptom severity was assessed with brief psychiatric rating scale, positive and negative syndrome scale on the blood draw day. Fresh blood samples were collected to measure levels of nitric oxide and lipid peroxide in plasma as well as activities of superoxide dismutase, catalase and glutathione peroxidase in red blood cells by spectrophotometric assays simultaneously. Results Comparison of the biochemical parameters indicated that the level of nitric oxide and lipid peroxide increased in patient group, which represented a positive correlation with positive scale scores; while the activities of three critical enzymes decreased and showed a negative linear correlation. Conclusion： This study showed that there are dysregulation of free radical metabolism and poor activities of the antioxidant defense systems in schizophrenic patients. Excess free radicals formation may play a critical role in the etiology of schizophrenia. Using antioxidants might be an effective therapeutic approach to partially alleviate or prevent the symptoms of schizophrenia. 相似文献
5.
Gora Dadheech Sandhya Mishra Shiv Gautam Praveen Sharma 《Indian journal of clinical biochemistry : IJCB》2006,21(2):34-38
A disturbance in the antioxidant defense system including α-tocopherol, ascorbic acid and reduced glutahtione metabolism due
to free radical induced oxidative injury has been implicated in various neuro-psychiatric disorders. The roles of these antioxidants,
changes in their blood levels and correlation with oxidative stress were studied in a common psychiatric illness Schizophrenia.
Fifty-eight subjects of either sex ranging in age from 18–60 years divided into two age groups (≤40 and >40 years) diagnosed
for schizophrenia, and forty age and sex-matched normal subjects as controls were included in the study. Blood samples were
analyzed for malondialdehyde (MDA), α-tocopherol, total ascorbic acid (TAA), dehydro ascorbic acid (DHAA), reduced ascorbic
acid (RAA), leucocyte ascorbic acid (LAA) and reduced glutathione (GSH). A decrease in the levels of α-tocopherol, total ascorbic
acid and reduced glutathione was found in schizophrenics compared to normal controls. Further a significant rise in oxidative
stress and decreased antioxidant status was observed in the chronic stage of schizophrenia as compared to those in acute condition.
A significant rise in dehydroascorbic acid with concomitant fall in reduced ascorbic acid suggests scavenging action of ascorbic
acid and its utilization with increased oxidative stress as indicated by high blood malondialdehyde levels. Leucocyte ascorbic
acid, a better index of ascorbic acid status was also found to be reduced in schizophrenics, suggesting depletion of body
stores of ascorbic acid and the condition worsened with advancing age. 相似文献
6.
Susceptibility of Schizophrenic patients to lipid peroxidation relative to healthy control subjects was investigated by measuring
the malondialdehyde (MDA) levels in plasma. The main finding was that Schizophrenic patients were more susceptible than control
subjects to oxidative damage as evident from increased MDA levels in plasma. Antioxidant levels are also depleted in Schizophrenic
patients when compared to normal subjects as evident from decreased levels of vitamins E and C in the plasma. Impaired antioxidant
defense and increased lipid peroxidation suggests that treatment with antioxidants (Vitamin E, Vitamin C, beta carotene) at
the initial stages of illness may prevent further oxidative injury and deterioration of associated neurological deficits in
Schizophrenia. 相似文献
7.
8.
目的:探讨舍曲林合并舒必利治疗精神分裂症的疗效和安全性.方法:将60例符合CCMD-3诊断标准的精神分裂症患者随机分为研究组和对照组,研究组给予舍曲林合并舒必利治疗,对照组服用阿立哌唑,疗程8周,用PANSS、TESS评定疗效和安全性.结果:研究结束时舍曲林合并舒必利组总有效率为86.7%,阿立哌唑组总有效率83.3%,两组比较无显著性差异(P>0.05).两组不良反应少且轻.结论:采用舍曲林合并舒必利的方法治疗精神分裂症疗效可靠,安全性好,值得进一步研究. 相似文献
9.
N. Gaur S. Gautam M. Gaur P. Sharma G. Dadheech S. Mishra 《Indian journal of clinical biochemistry : IJCB》2008,23(4):307-327
The conclusive identification of specific etiological factors or pathogenic processes in the illness of schizophrenia has
remained elusive despite great technological progress. The convergence of state-of-art scientific studies in molecular genetics,
molecular neuropathophysiology, in vivo brain imaging and psychopharmacology, however, indicates that we may be coming much
closer to understanding the genesis of schizophrenia. In near future, the diagnosis and assessment of schizophrenia using
biochemical markers may become a “dream come true” for the medical community as well as for the general population. An understanding
of the biochemistry/ visa vis pathophysiology of schizophrenia is essential to the discovery of preventive measures and therapeutic
intervention. 相似文献
10.
杨德 《五邑大学学报(社会科学版)》2002,4(1):28-31,40
巴赫金的对话理论来源于陀思妥耶夫基小说的复调性、对话性，不过却否认与疯癫之间的联系，显然是不符合文本事实的。因为第一，巴赫金恰恰是在陀氏的而非其他作家的作品中发现了“对话”的，而疯癫却正是陀氏小说明显的特征；第二，实际上，巴氏所举的“对话”例子，从形式上看并不是“对话”而是某种“拷问”，从内容上看，更象精神分裂病患者的谵语。据此，可以说明“对话”与“疯癫”之间的联系并由此角度审视“对话”的价值。 相似文献