1
|
Wei HX, Li B, Yang FD, Su SF, Wei LL, Ding YJ, Liu YF, Wang D. [Analysis of 8 cases of asparaginase related cerebral venous sinus thrombosis in children]. Zhonghua Er Ke Za Zhi 2022; 60:567-572. [PMID: 35658364 DOI: 10.3760/cma.j.cn112140-20211112-00946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To summarize the clinical features, treatment and prognosis of asparaginase (ASP) related cerebral venous sinus thrombosis (CVST). Methods: Clinical profiles including age, sex, first symptoms, coagulation function, imaging findings, ASP type, treatment and prognosis of eight acute lymphoblastic leukemia (ALL) or lymphoblastic lymphoma (LBL) children with ASP related CVST at the Department of Pediatrics, First Affiliated Hospital of Zhengzhou University from November 2016 to October 2021 were analyzed retrospectively. Results: Eight CVST children were all male, including 6 ALL and 2 LBL, with the onset age ranged from 5 to 15 years, 6 cases occurred in the stage of first induction remission, and the initial symptom were mainly epileptic seizures (7 cases). Magnetic resonance imaging combined magnetic resonance venography (MRV) showed the most common site of venous sinus enlargement was superior sagittal sinus (8 cases). Secondary cerebral hemorrhage was found in 5 cases. D-dimer elevated on the day of onset in all cases. Three patients were treated with intravascular mechanical thrombectomy and thrombolysis combined with anticoagulant therapy, 3 patients were treated with continuous anticoagulant therapy only, 2 patients were not treated with anticoagulant therapy. MRV follow-up for 3 months showed that the thrombi in patients were almost completely absorbed except in 2 patients who were not treated with anticoagulant therapy. Thrombolysis combined with anticoagulant therapy was the fastest way for thrombosis absorption. Among 8 patients, 1 died of early recurrence of ALL, and 7 patients accepted further asparaginase and no CVST recurrence or progression was found. There were no sequelae of nervous system except 1 patient with left upper limb muscle strength impairment. Conclusions: ASP related CVST is more common in older male children and the prognosis is good. ASP related CVST occurred mostly in the stage of first induction remission, and most initial manifestation is epileptic seizure. The superior sagittal region is a common site of thrombus, magnetic resonance imaging combined with MRV is helpful for accurately diagnosis. Timely anticoagulant treatment can improve the prognosis, and mechanical thrombectomy and thrombolysis can quickly recanalize the vessel.
Collapse
Affiliation(s)
- H X Wei
- Department of Hematology and Oncology, Children's Hospital, the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450052,China
| | - B Li
- Department of Hematology and Oncology, Children's Hospital, the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450052,China
| | - F D Yang
- Department of Neurosurgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - S F Su
- Department of Hematology and Oncology, Children's Hospital, the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450052,China
| | - L L Wei
- Department of Hematology and Oncology, Children's Hospital, the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450052,China
| | - Y J Ding
- Department of Hematology and Oncology, Children's Hospital, the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450052,China
| | - Y F Liu
- Department of Hematology and Oncology, Children's Hospital, the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450052,China
| | - D Wang
- Department of Hematology and Oncology, Children's Hospital, the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450052,China
| |
Collapse
|
2
|
Xin LM, Su YA, Yan F, Yang FD, Wang G, Fang YR, Lu Z, Yang HC, Hu J, Chen ZY, Huang Y, Sun J, Wang XP, Li HC, Zhang JB, Li JT, Si TM. Prevalence, clinical features and prescription patterns of psychotropic medications for patients with psychotic depression in China. J Affect Disord 2022; 301:248-252. [PMID: 35038478 DOI: 10.1016/j.jad.2022.01.063] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 01/10/2022] [Accepted: 01/13/2022] [Indexed: 02/08/2023]
Abstract
OBJECTIVE To investigate the prevalence of psychotic depression and the differences in sociodemographic and clinical characteristics and prescription patterns of psychotropic medications between patients with psychotic depression (PD) and patients with nonpsychotic depression (NPD) in China. METHODS We conducted a cross-sectional study in 13 major psychiatric hospitals or the psychiatric units of general hospitals in China from September 1, 2010, to February 28, 2011. PD was defined according to the psychotic disorder section of the Mini International Neuropsychiatric Interview (MINI). The sociodemographic and clinical characteristics and the prescription patterns of psychotropic medications were compared between the PD and NPD groups. Multivariate logistic regression analysis was used to investigate factors associated with an increased likelihood of PD. RESULTS Among 1172 MDD patients, the prevalence of psychotic features was 9.2% in the present study. The logistic regression analysis indicated that unmarried (OR = 2.08, p < 0.001), frequent depressive episodes (OR = 2.10, p = 0.020), depressive episodes with suicidal ideation and attempts (OR = 1.91, p = 0.004), and patients who were prescribed any antipsychotics (OR = 2.94, p < 0.001) were associated with psychotic features in patients with MDD. LIMITATIONS Cross-sectional design, retrospective recall of some data CONCLUSION: The prevalence of PD is high in China, and there were some differences in demographic and clinical characteristics between patients with PD and patients with NPD. Clinicians should regularly assess psychotic symptoms and consider intensive treatment and close monitoring when treating subjects with PD.
Collapse
Affiliation(s)
- Li-Min Xin
- Beijing Huilongguan Hospital, Beijing, China
| | - Yun-Ai Su
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing 100191, China.
| | - Feng Yan
- Beijing Huilongguan Hospital, Beijing, China
| | - Fu-De Yang
- Beijing Huilongguan Hospital, Beijing, China
| | - Gang Wang
- Mood Disorders Center, Beijing Anding Hospital, Capital Medical University, Beijing, China
| | - Yi-Ru Fang
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zheng Lu
- Shanghai Tongji Hospital, Tongji University Medical School, Shanghai, China
| | - Hai-Chen Yang
- Division of Mood Disorders, Shenzhen Mental Health Centre, Shenzhen, Guangdong Province, China
| | - Jian Hu
- The First Hospital of Harbin Medical University, Harbin, China
| | - Zhi-Yu Chen
- Hangzhou Seventh People's Hospital, Hangzhou, China
| | - Yi Huang
- West China Hospital, Sichuan University, Chengdu, China
| | - Jing Sun
- The Affiliated Brain Hospital, Nanjing Medical University, Nanjing, China
| | - Xiao-Ping Wang
- The Second Xiangya Hospital, Mental Health Institute, Central South University, Changsha, China
| | - Hui-Chun Li
- The Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Jin-Bei Zhang
- The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Ji-Tao Li
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing 100191, China
| | - Tian-Mei Si
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing 100191, China.
| |
Collapse
|
3
|
Chen JX, Feng JH, Zhang LG, Liu Y, Yang FD, Wang SL, Tan YL, Su YA. Association of serum uric acid levels with suicide risk in female patients with major depressive disorder: a comparative cross-sectional study. BMC Psychiatry 2020; 20:477. [PMID: 32993584 PMCID: PMC7526231 DOI: 10.1186/s12888-020-02891-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 09/23/2020] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Individuals with major depressive disorder (MDD) have a high suicide risk. Some evidence suggests that uric acid (UA) may be involved in the pathophysiology of MDD. The purpose of this study was to evaluate whether serum UA levels were associated with suicide risk in MDD patients. METHODS One hundred four female patients with MDD (52 patients with suicide risk and 52 patients without suicide risk) and 52 healthy individuals were included in this study. The suicide risk was evaluated by Mini International Neuropsychiatric Interview (M.I.N.I.). Fasting serum levels of UA, as well as glucose, lipid and renal function indicators were measured. RESULTS Serum UA levels in MDD patients with suicide risk (245.01 ± 55.44 μmol/L) were significantly lower than those in MDD patients without suicide risk (274.17 ± 72.65 μmol/L) (p = 0.017) and healthy controls (271.42 ± 55.25 μmol/L) (p = 0.030). There was no difference in serum UA levels between the MDD patients without suicide risk and healthy controls (p = 0.821). Binary logistic regression analysis revealed a significant relationship between suicide risk and decreased serum UA levels (OR = 0.989, p = 0.010) in MDD patients. CONCLUSION Decreased serum UA levels were associated with suicide risk in MDD patients. Purinergic system dysfunction may be involved in the neurobiological basis of suicide risk in these patients.
Collapse
Affiliation(s)
- Jing-Xu Chen
- grid.414351.60000 0004 0530 7044Beijing HuiLongGuan Hospital, Peking University HuiLongGuan Clinical Medical School, Beijing, China
| | - Jun-Hui Feng
- Jining Psychiatric Hospital, Jining, Shandong Province China
| | - Li-Gang Zhang
- grid.414351.60000 0004 0530 7044Beijing HuiLongGuan Hospital, Peking University HuiLongGuan Clinical Medical School, Beijing, China
| | - Yan Liu
- The Department of Psychiatry of Shengli Hospital, Sinopec Shengli Petroleum Administration, Dongying, Shandong Province China
| | - Fu-De Yang
- grid.414351.60000 0004 0530 7044Beijing HuiLongGuan Hospital, Peking University HuiLongGuan Clinical Medical School, Beijing, China
| | - Shao-Li Wang
- grid.414351.60000 0004 0530 7044Beijing HuiLongGuan Hospital, Peking University HuiLongGuan Clinical Medical School, Beijing, China
| | - Yun-Long Tan
- grid.414351.60000 0004 0530 7044Beijing HuiLongGuan Hospital, Peking University HuiLongGuan Clinical Medical School, Beijing, China
| | - Yun-Ai Su
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, China.
| |
Collapse
|
4
|
Zhou YF, Huang JC, Zhang P, Fan FM, Chen S, Fan HZ, Cui YM, Luo XG, Tan SP, Wang ZR, Feng W, Yuan Y, Yang FD, Savransky A, Ryan M, Goldwaser E, Chiappelli J, Rowland LM, Kochunov P, Tan YL, Hong LE. Choroid Plexus Enlargement and Allostatic Load in Schizophrenia. Schizophr Bull 2020; 46:722-731. [PMID: 31603232 PMCID: PMC7147577 DOI: 10.1093/schbul/sbz100] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Although schizophrenia is a brain disorder, increasing evidence suggests that there may be body-wide involvement in this illness. However, direct evidence of brain structures involved in the presumed peripheral-central interaction in schizophrenia is still unclear. Seventy-nine previously treatment-naïve first-episode schizophrenia patients who were within 2-week antipsychotics initial stabilization, and 41 age- and sex-matched healthy controls were enrolled in the study. Group differences in subcortical brain regional structures measured by MRI and the subclinical cardiovascular, metabolic, immune, and neuroendocrine biomarkers as indexed by allostatic load, and their associations were explored. Compared with controls, patients with schizophrenia had significantly higher allostatic load (P = .001). Lateral ventricle (P < .001), choroid plexus (P < .001), and thalamus volumes (P < .001) were significantly larger, whereas amygdala volume (P = .001) was significantly smaller in patients. The choroid plexus alone was significantly correlated with higher allostatic load after age, sex, education level, and the total intracranial volume were taken into account (t = 3.60, P < .001). Allostatic load was also significantly correlated with PANSS positive (r = 0.28, P = .016) and negative (r = -0.31, P = .008) symptoms, but in opposite directions. The peripheral multisystemic and central nervous system abnormalities in schizophrenia may interact through the choroid plexus during the early stage of the illness. The choroid plexus might provide a sensitive structural biomarker to study the treatment and prevention of brain-periphery interaction abnormalities in schizophrenia.
Collapse
Affiliation(s)
- Yan-Fang Zhou
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, P. R. China
| | - Jun-Chao Huang
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, P. R. China
| | - Ping Zhang
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, P. R. China
| | - Feng-Mei Fan
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, P. R. China
| | - Song Chen
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, P. R. China
| | - Hong-Zhen Fan
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, P. R. China
| | - Yi-Min Cui
- Department of Pharmacy, Peking University First Hospital, Beijing, P. R. China
| | - Xing-Guang Luo
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT
| | - Shu-Ping Tan
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, P. R. China
| | - Zhi-Ren Wang
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, P. R. China
| | - Wei Feng
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, P. R. China
| | - Ying Yuan
- School of Foreign Languages and Literature, Tianjin University, Tianjin, P. R. China
| | - Fu-De Yang
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, P. R. China
| | - Anya Savransky
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD
| | - Meghann Ryan
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD
| | - Eric Goldwaser
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD
| | - Joshua Chiappelli
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD
| | - Laura M Rowland
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD
| | - Peter Kochunov
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD
| | - Yun-Long Tan
- Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, P. R. China,To whom correspondence should be addressed; Peking University HuiLongGuan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, P. R. China; tel: +86-(10)-83024319, fax: +86-(10)-62710156, e-mail:
| | - L Elliot Hong
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD
| |
Collapse
|
5
|
Fan FM, Xiang H, Wen Y, Zhao YL, Zhu XL, Wang YH, Yang FD, Tan YL, Tan SP. Brain Abnormalities in Different Phases of Working Memory in Schizophrenia: An Integrative Multi-Modal MRI Study. J Nerv Ment Dis 2019; 207:760-767. [PMID: 31465311 DOI: 10.1097/nmd.0000000000001001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The current study aimed to examine both gray matter and functional activity changes in schizophrenia by combing both structural and task-related functional magnetic resonance imaging (fMRI). Nineteen patients with schizophrenia and 17 controls were recruited. The fMRI scan was performed while performing a working memory (WM) task. In terms of task performance, accuracy did not differ between groups, but there were significant differences in reaction time. Compared with controls, patients exhibited decreased functional activation in prefrontal areas, insula, lingual gyrus, and superior temporal gyrus during different phases of WM. The subcallosal cortex showed increased activation. Intriguingly, a structural-functional correlation was found in the left dorsolateral prefrontal cortex, anterior cingulate cortex, and subcallosal cortex in patients when performing high-load WM task. This study demonstrated both impaired gray matter volume and functional activation during WM in schizophrenia, suggesting structural and functional impairments. The structural-functional correlation in schizophrenia suggested that structural damage in schizophrenia might induce a decreased ability to modulate functional response in accordance with increasing task difficulty.
Collapse
Affiliation(s)
- Feng-Mei Fan
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing
| | - Hong Xiang
- Chongqing Three Gorges Central Hospital, Chongqing, China
| | - Yun Wen
- Chongqing Three Gorges Central Hospital, Chongqing, China
| | - Yan-Li Zhao
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing
| | - Xiao-Lin Zhu
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing
| | - Yun-Hui Wang
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing
| | - Fu-De Yang
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing
| | - Yun-Long Tan
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing
| | - Shu-Ping Tan
- Beijing Huilongguan Hospital, Peking University Huilongguan Clinical Medical School, Beijing
| |
Collapse
|
6
|
Xin LM, Chen L, Su YA, Yang FD, Wang G, Fang YR, Lu Z, Yang HC, Hu J, Chen ZY, Huang Y, Sun J, Wang XP, Li HC, Zhang JB, Osser DN, Si TM. Prevalence and clinical features of atypical depression among patients with major depressive disorder in China. J Affect Disord 2019; 246:285-289. [PMID: 30594041 DOI: 10.1016/j.jad.2018.12.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 12/06/2018] [Accepted: 12/15/2018] [Indexed: 02/05/2023]
Abstract
BACKGROUND Little is known about the demographic and clinical features of the atypical subtype of major depressive disorder (MDD) patients in China. This study set out to investigate the prevalence of atypical depression in MDD patients in China, and identify its demographic and clinical features. METHODS The study was conducted in 13 major psychiatric hospitals or in the psychiatric units of general hospitals in China, and recruited a sample of 1172 patients diagnosed with MDD. The patients' demographic and clinical features and prescriptions of psychotropic drugs were collected using a standardized questionnaire designed for the study. RESULTS The prevalence of atypical depression was 15.3%. In multiple logistic regression analyses, compared to the non-atypical depression patients, the atypical depression patients were more likely to have depressive episodes with suicide ideation and attempts (OR = 1.49, 95% CI = 1.06, 2.10, P = 0.023), depressive episodes with psychotic features (OR = 2.15, 95% CI = 1.43, 3.22, P < 0.001), seasonal depressive episodes (OR = 1.77, 95% CI = 1.12, 2.78, P = 0.014), an earlier age of onset (OR = 0.98, 95% CI = 0.96, 0.99, P = 0.001), and lifetime depressive episodes (OR = 1.07, 95% CI = 1.01, 1.13, P = 0.020). LIMITATIONS The assessment of atypical features was not based on a validated rating scale. CONCLUSION Our results indicate that atypical depression is common in Chinese patients with MDD. MDD with atypical features may be more severe and debilitating than patients with non-atypical features.
Collapse
Affiliation(s)
- Li-Min Xin
- Key Laboratory of Mental Health, Ministry of Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Peking University Sixth Hospital and Peking University Institute of Mental Health, Beijing 100191, China; Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | - Lin Chen
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | - Yun-Ai Su
- Key Laboratory of Mental Health, Ministry of Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Peking University Sixth Hospital and Peking University Institute of Mental Health, Beijing 100191, China.
| | - Fu-De Yang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | - Gang Wang
- Mood Disorders Center, Beijing Anding Hospital, Capital Medical University, Beijing, China
| | - Yi-Ru Fang
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zheng Lu
- Shanghai Tongji Hospital, Tongji University Medical School, Shanghai, China
| | - Hai-Chen Yang
- Division of Mood Disorders, Shenzhen Mental Health Centre, Shenzhen, Guangdong Province, China
| | - Jian Hu
- The First Hospital of Harbin Medical University, Harbin, China
| | - Zhi-Yu Chen
- Hangzhou Seventh People's Hospital, Hangzhou, China
| | - Yi Huang
- West China Hospital, Sichuan University, Chengdu, China
| | - Jing Sun
- The Affiliated Brain Hospital, Nanjing Medical University, Nanjing, China
| | - Xiao-Ping Wang
- Mental Health Institute, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hui-Chun Li
- The Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Jin-Bei Zhang
- The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - David N Osser
- Harvard Medical School Department of Psychiatry and VA Boston Healthcare System, Boston, MA, United States
| | - Tian-Mei Si
- Key Laboratory of Mental Health, Ministry of Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Peking University Sixth Hospital and Peking University Institute of Mental Health, Beijing 100191, China.
| |
Collapse
|
7
|
Chen JX, Zhang LG, Liu KZ, Chen HM, Zhou SJ, Wang N, Tan YL, Wang SL, Jones A, Yang FD, Huang XF. Patients With Drug-Naive Bipolar Disorder in Remission After 8 Weeks of Treatment Had Decreased Serum Uric Acid Concentrations. Front Psychiatry 2019; 10:767. [PMID: 31736796 PMCID: PMC6837074 DOI: 10.3389/fpsyt.2019.00767] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 09/24/2019] [Indexed: 02/04/2023] Open
Abstract
Background: Evidence indicates that the serum concentration of uric acid (UA) in patients may relate both to the pathophysiology and therapeutics of bipolar disorder (BPD). The purpose of this study was to examine the changes and clinical significance of serum UA concentrations in first-episode manic patients suffering from BPD. Methods: Seventy-six drug-naive patients with first-episode bipolar mania and 76 age- and gender-matched healthy subjects were recruited. Young Mania Rating Scale and Hamilton Depression Rating Scale were used to assess clinical symptoms. We tested serum UA concentrations by sandwich enzyme-linked immunosorbent assay at baseline and at the end of 8-week treatment in BPD patients and in the control group. Results: After 8-week quetiapine and sodium valproate treatment, this study revealed that the serum UA concentrations in remitted patients were significantly lower than nonremitted patients; however, those remitted patients still had higher serum UA than healthy controls. We discovered that the baseline UA concentration was higher in nonremitted than remitted patients after 8 weeks of treatment. Finally, a positive association was found between serum UA and symptom relief in the first episode of manic disorder patients. Conclusion: Patients with first-episode BPD had high levels of serum UA, which responds to treatment mainly in remitted patients. Our results suggest that serum UA concentrations might present potentially a trait marker in bipolar patients.
Collapse
Affiliation(s)
- Jing-Xu Chen
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | - Li-Gang Zhang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | - Ke-Zhi Liu
- Department of Psychiatry, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Hong-Mei Chen
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | | | - Ning Wang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | - Yun-Long Tan
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | - Shao-Li Wang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | - Alison Jones
- Illawarra Health and Medical Research Institute and School of Medicine, University of Wollongong, Wollongong, NSW, Australia
| | - Fu-De Yang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | - Xu-Feng Huang
- Illawarra Health and Medical Research Institute and School of Medicine, University of Wollongong, Wollongong, NSW, Australia
| |
Collapse
|
8
|
Xin LM, Chen L, Su YA, Yang FD, Wang G, Fang YR, Lu Z, Yang HC, Hu J, Chen ZY, Huang Y, Sun J, Wang XP, Li HC, Zhang JB, Si TM. Risk Factors for Recent Suicide Attempts in Major Depressive Disorder Patients in China: Results From a National Study. Front Psychiatry 2018; 9:300. [PMID: 30018575 PMCID: PMC6037843 DOI: 10.3389/fpsyt.2018.00300] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 06/15/2018] [Indexed: 02/05/2023] Open
Abstract
Objective: To analyze the factors associated with recent suicide attempts including socio-demographic and clinical characteristics in major depressive disorder (MDD) patients in China. Methods: The data were from a nationwide sample from 13 major psychiatric hospitals or the psychiatric units of general hospitals in China, from September 1, 2010 to February 28, 2011. Melancholic features and suicide attempts in the past month were defined according to the melancholic feature module and the suicide module of the Mini International Neuropsychiatric Interview (MINI). Socio-demographic and clinical characteristics were compared between MDD patients with and without recent suicide attempts. Further analyses regarding the factors associated with recent suicide attempts in MDD patients were performed via multivariate logistic regression analysis. Results: Among 1,172 MDD patients, 57 (4.9%) were reported to have made a suicide attempt in the past month. Compared to the MDD patients without recent suicide attempt, significantly higher percentage of patients in the recent suicide attempters group had previous suicide attempts (χ2 = 171.861, p < 0.001) and depressive episodes with melancholic features (χ2 = 22.837, p < 0.001). Logistic regression analysis indicated that previous suicide attempts (OR = 20.81, 95% CI: 11.12-38.94, p < 0.001) and depressive episodes with melancholic features (OR = 4.43, 95% CI: 2.09-9.43, p < 0.001) were independently associated with recent suicide attempts in MDD patients. Limitations: Cross-sectional design, retrospective recall of suicide attempt data. Conclusion: Recent suicide attempts are associated with melancholic features and previous suicide attempts in MDD patients in China. These data may help clinicians to identify MDD patients at high risk of suicide attempt behavior.
Collapse
Affiliation(s)
- Li-Min Xin
- Key Laboratory of Mental Health, Ministry of Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Peking University Sixth Hospital and Peking University Institute of Mental Health, Beijing, China.,Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | - Lin Chen
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | - Yun-Ai Su
- Key Laboratory of Mental Health, Ministry of Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Peking University Sixth Hospital and Peking University Institute of Mental Health, Beijing, China
| | - Fu-De Yang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | - Gang Wang
- Mood Disorders Center, Beijing Anding Hospital, Capital Medical University, Beijing, China
| | - Yi-Ru Fang
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zheng Lu
- Shanghai Tongji Hospital, Tongji University Medical School, Shanghai, China
| | - Hai-Chen Yang
- Division of Mood Disorders, Shenzhen Mental Health Centre, Shenzhen, China
| | - Jian Hu
- The First Hospital of Harbin Medical University, Harbin, China
| | - Zhi-Yu Chen
- Hangzhou Seventh People's Hospital, Hangzhou, China
| | - Yi Huang
- West China Hospital, Sichuan University, Chengdu, China
| | - Jing Sun
- The Affiliated Brain Hospital, Nanjing Medical University, Nanjing, China
| | - Xiao-Ping Wang
- Mental Health Institute, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hui-Chun Li
- The Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Jin-Bei Zhang
- The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Tian-Mei Si
- Key Laboratory of Mental Health, Ministry of Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Peking University Sixth Hospital and Peking University Institute of Mental Health, Beijing, China
| |
Collapse
|
9
|
Chen DC, Du XD, Yin GZ, Yang KB, Nie Y, Wang N, Li YL, Xiu MH, He SC, Yang FD, Cho RY, Kosten TR, Soares JC, Zhao JP, Zhang XY. Impaired glucose tolerance in first-episode drug-naïve patients with schizophrenia: relationships with clinical phenotypes and cognitive deficits. Psychol Med 2016; 46:3219-3230. [PMID: 27604840 DOI: 10.1017/s0033291716001902] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Schizophrenia patients have a higher prevalence of type 2 diabetes mellitus with impaired glucose tolerance (IGT) than normals. We examined the relationship between IGT and clinical phenotypes or cognitive deficits in first-episode, drug-naïve (FEDN) Han Chinese patients with schizophrenia. METHOD A total of 175 in-patients were compared with 31 healthy controls on anthropometric measures and fasting plasma levels of glucose, insulin and lipids. They were also compared using a 75 g oral glucose tolerance test and the homeostasis model assessment of insulin resistance (HOMA-IR). Neurocognitive functioning was assessed using the MATRICS Consensus Cognitive Battery (MCCB). Patient psychopathology was assessed using the Positive and Negative Syndrome Scale (PANSS). RESULTS Of the patients, 24.5% had IGT compared with none of the controls, and they also had significantly higher levels of fasting blood glucose and 2-h glucose after an oral glucose load, and were more insulin resistant. Compared with those patients with normal glucose tolerance, the IGT patients were older, had a later age of onset, higher waist or hip circumference and body mass index, higher levels of low-density lipoprotein and triglycerides and higher insulin resistance. Furthermore, IGT patients had higher PANSS total and negative symptom subscale scores, but no greater cognitive impairment except on the emotional intelligence index of the MCCB. CONCLUSIONS IGT occurs with greater frequency in FEDN schizophrenia, and shows association with demographic and anthropometric parameters, as well as with clinical symptoms but minimally with cognitive impairment during the early course of the disorder.
Collapse
Affiliation(s)
- D C Chen
- Beijing HuiLongGuan Hospital,Peking University,Beijing,People's Republic of China
| | - X D Du
- Suzhou Psychiatric Hospital,Suzhou,Jiangsu Province,People's Republic of China
| | - G Z Yin
- Suzhou Psychiatric Hospital,Suzhou,Jiangsu Province,People's Republic of China
| | - K B Yang
- Beijing HuiLongGuan Hospital,Peking University,Beijing,People's Republic of China
| | - Y Nie
- Beijing HuiLongGuan Hospital,Peking University,Beijing,People's Republic of China
| | - N Wang
- Beijing HuiLongGuan Hospital,Peking University,Beijing,People's Republic of China
| | - Y L Li
- Beijing HuiLongGuan Hospital,Peking University,Beijing,People's Republic of China
| | - M H Xiu
- Beijing HuiLongGuan Hospital,Peking University,Beijing,People's Republic of China
| | - S C He
- Department of Psychology,Peking University,Beijing,People's Republic of China
| | - F D Yang
- Beijing HuiLongGuan Hospital,Peking University,Beijing,People's Republic of China
| | - R Y Cho
- Department of Psychiatry and Behavioral Sciences,The University of Texas Health Science Center at Houston,Houston, TX,USA
| | - T R Kosten
- Department of Psychiatry and Behavioral Sciences,Baylor College of Medicine,Houston, TX,USA
| | - J C Soares
- Department of Psychiatry and Behavioral Sciences,The University of Texas Health Science Center at Houston,Houston, TX,USA
| | - J P Zhao
- Mental Health Institute of the Second Xiangya Hospital, Central South University,Changsha,People's Republic of China
| | - X Y Zhang
- Beijing HuiLongGuan Hospital,Peking University,Beijing,People's Republic of China
| |
Collapse
|
10
|
Mao Q, Tan YL, Luo XG, Tian L, Wang ZR, Tan SP, Chen S, Yang GG, An HM, Yang FD, Zhang XY. Association of catechol-O-methyltransferase Val(108/158) Met genetic polymorphism with schizophrenia, P50 sensory gating, and negative symptoms in a Chinese population. Psychiatry Res 2016; 242:271-276. [PMID: 27315458 DOI: 10.1016/j.psychres.2016.04.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 01/08/2016] [Accepted: 04/13/2016] [Indexed: 01/17/2023]
Abstract
Catechol-O-methyltransferase (COMT), an enzyme involved in the degradation and inactivation of the neurotransmitter dopamine, is associated with the sensory gating phenomenon, protecting the cerebral cortex from information overload. The COMT Val(108/158)Met polymorphism is essential for prefrontal cortex processing capacity and efficiency. The current study was designed to investigate the role of COMT Val(108/158)Met polymorphism in development, sensory gating deficit, and symptoms of schizophrenia in Han Chinese population. P50 gating was determined in 139 schizophrenic patients and 165 healthy controls. Positive and Negative Syndrome Scale (PANSS) was used to assess the clinical symptomatology in 370 schizophrenic subjects. COMT Val(108/158)Met polymorphism was genotyped by PCR-restriction fragment length polymorphism (PCR-RFLP). No significant differences in COMT allele and genotype distributions were observed between schizophrenic patients and control groups. Although P50 deficits were present in patients, there was no evidence for an association between COMT Val(108/158)Met polymorphism and the P50 biomarker. Moreover, PANSS negative subscore was significantly higher in Val allele carriers than in Met/Met individuals. The present findings suggest that COMT Val(108/158)Met polymorphism may not contribute to the risk of schizophrenia and to the P50 deficits, but may contribute to the negative symptoms of schizophrenia among Han Chinese.
Collapse
Affiliation(s)
- Qiao Mao
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China
| | - Yun-Long Tan
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China.
| | - Xing-Guang Luo
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Li Tian
- Neuroscience Center, University of Helsinki, Viikinkaari 4, FIN-00014 Helsinki, Finland
| | - Zhi-Ren Wang
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China
| | - Shu-Ping Tan
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China
| | - Song Chen
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China
| | - Gui-Gang Yang
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China
| | - Hui-Mei An
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China
| | - Fu-De Yang
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China
| | - Xiang-Yang Zhang
- Biological Psychiatry Research Center, Peking University Huilongguan Teaching Hospital, Beijing 100096, PR China; Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA
| |
Collapse
|
11
|
An HM, Tan YL, Tan SP, Shi J, Wang ZR, Yang FD, Huang XF, Soars JC, Kosten TR, Zhang XY. Smoking and Serum Lipid Profiles in Schizophrenia. Neurosci Bull 2016; 32:383-8. [PMID: 27017941 PMCID: PMC5563778 DOI: 10.1007/s12264-016-0022-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 02/15/2016] [Indexed: 12/20/2022] Open
Abstract
Schizophrenia is associated with a high prevalence of cigarette-smoking and abnormal lipid profiles. The purpose of this study was to determine whether the profiles differ between schizophrenic smokers and non-smokers and whether the lipid profiles are related to psychopathological symptoms. Serum lipid profiles were measured in 130 male inpatients with DSM-IV-defined schizophrenia: 104 smokers and 26 non-smokers. Symptoms were assessed using the Positive and Negative Syndrome Scale (PANSS). Our results showed that positive PANSS symptoms were fewer in smokers than in non-smokers, while the negative symptoms were fewer in those who smoked more cigarettes. Total protein and globulin levels were significantly lower in the smokers than in the non-smokers. However, there was no significant difference in total cholesterol, triglycerides, high-density lipoprotein cholesterol (HDL-c), low-density lipoprotein cholesterol, apolipoprotein A1, or apolipoprotein B between the smokers and non-smokers. However, the PANSS positive subscale had a significant negative correlation with the HDL-c levels (a protective factor) in the smokers but not in the non-smokers. Our findings suggest that schizophrenic patients who smoke have fewer psychotic symptoms, but contrary to expectation, smoking does not alter lipid profile levels.
Collapse
Affiliation(s)
- Hui-Mei An
- Beijing HuiLongGuan Hospital, Peking University, Beijing, 100096, China
| | - Yun-Long Tan
- Beijing HuiLongGuan Hospital, Peking University, Beijing, 100096, China
| | - Shu-Ping Tan
- Beijing HuiLongGuan Hospital, Peking University, Beijing, 100096, China
| | - Jing Shi
- Beijing HuiLongGuan Hospital, Peking University, Beijing, 100096, China
| | - Zhi-Ren Wang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, 100096, China
| | - Fu-De Yang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, 100096, China
| | - Xu-Feng Huang
- Centre for Translational Neuroscience, School of Medicine, Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW, Australia
| | - Jair C Soars
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Thomas R Kosten
- Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA.
| | - Xiang-Yang Zhang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, 100096, China.
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, Houston, TX, USA.
| |
Collapse
|
12
|
Zhang XY, Tan YL, Chen DC, Tan SP, Yang FD, Zunta-Soares GB, Soares JC. Effects of cigarette smoking and alcohol use on neurocognition and BDNF levels in a Chinese population. Psychopharmacology (Berl) 2016; 233:435-45. [PMID: 26518023 DOI: 10.1007/s00213-015-4124-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Accepted: 10/13/2015] [Indexed: 12/29/2022]
Abstract
OBJECTIVE Few studies have examined the potential interactive effect of both smoking and drinking on cognition. Brain-derived neurotrophic factor (BDNF) plays a critical role in cognition. This is the first study to examine the neurocognitive consequences of cigarette smoking combined with chronic alcohol consumption and their relationship to serum BDNF levels in a Chinese Han population. MATERIALS AND METHODS We recruited 191 healthy male subjects, including 47 isolated smokers, 31 isolated chronic alcohol users, 58 combined smokers and chronic alcohol users, and 55 non-smokers and non-alcohol users. We then compared the repeatable battery for the assessment of neuropsychological status (RBANS) scores and serum BDNF levels in these four groups. RESULTS When compared to the non-smoking + non-alcohol-using group, the smoking group performed worse on immediate memory, attention, language, and RBANS total score. There were no significant differences in the RBANS scores between the alcohol-using group and non-smoking + non-alcohol-using group, or between the smoking group and smoking + alcohol-using group. We did not find an association between BDNF and smoking or drinking status or between BDNF and cognitive performance. In the smoking group, there was a significant correlation between BDNF and carbon monoxide concentration, and between BDNF and the Fagerstrom Test for Nicotine Dependence (FTND) total score. CONCLUSIONS Our results suggest that smoking is associated with cognitive decline, but not with BDNF levels in a normal population. However, smoking severity is positively associated with BDNF levels. Concomitant alcohol use does not worsen the cognitive decline caused by smoking.
Collapse
Affiliation(s)
- Xiang Yang Zhang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China.
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, Houston, TX, USA.
- UT Center of Excellence on Mood Disorders (UTCEMD), Biomedical and Behavioral Sciences Building, 1941 East Road, Houston, TX, 77054, USA.
| | - Yun-Long Tan
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Da-Chun Chen
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Shu-Ping Tan
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Fu-De Yang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Giovana B Zunta-Soares
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Jair C Soares
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, Houston, TX, USA
| |
Collapse
|
13
|
Sun HQ, Li SX, Chen FB, Zhang Y, Li P, Jin M, Sun Y, Wang F, Mi WF, Shi L, Yue JL, Yang FD, Lu L. Diurnal neurobiological alterations after exposure to clozapine in first-episode schizophrenia patients. Psychoneuroendocrinology 2016; 64:108-16. [PMID: 26630391 DOI: 10.1016/j.psyneuen.2015.11.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 11/12/2015] [Accepted: 11/13/2015] [Indexed: 12/22/2022]
Abstract
BACKGROUND Irregular circadian rhythm and some of its most characteristic symptoms are frequently observed in patients with schizophrenia. However, changes in the expression of clock genes or neuropeptides that are related to the regulation of circadian rhythm may influence the susceptibility to recurrence after antipsychotic treatment in schizophrenia, but this possibility has not been investigated. METHODS Blood samples were collected from 15 healthy male controls and 13 male schizophrenia patients at 4h intervals for 24h before and after treatment with clozapine for 8 weeks. The outcome measures included the relative expression of clock gene mRNA PERIOD1 (PER1), PERIOD2 (PER2), PERIOD3 (PER3) and the levels of plasma cortisol, orexin, and insulin. RESULTS Compared with healthy controls, schizophrenia patients presented disruptions in diurnal rhythms of the expression of PER1, PER3, and NPAS2 and the release of orexin, accompanied by a delayed phase in the expression of PER2, decreases in PER3 and NPAS2 expression, and an increase in cortisol levels at baseline. Several of these disruptions (i.e., in PER1 and PER3 expression) persisted after 8 weeks of clozapine treatment, similar to the decreases in the 24-h expression of PER3 and NPAS2. Clozapine treatment for 8 weeks significantly decreased the 24-h levels of PER2 and increased the 24-h levels of insulin. CONCLUSION These persistent neurobiological changes that occur after 8 weeks of clozapine treatment may contribute to the vulnerability to recurrence and efficacy of long-term maintenance treatment in schizophrenia.
Collapse
Affiliation(s)
- Hong-Qiang Sun
- Peking University Sixth Hospital/Institute of Mental Health and Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing 100191, China
| | - Su-Xia Li
- National Institute on Drug Dependence, Peking University, Beijing 100191, China
| | - Fang-Bin Chen
- 102 Military Hospital of China, Changzhou 213000, China
| | - Yan Zhang
- 102 Military Hospital of China, Changzhou 213000, China
| | - Peng Li
- Peking University Sixth Hospital/Institute of Mental Health and Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing 100191, China; 102 Military Hospital of China, Changzhou 213000, China
| | - Mei Jin
- 102 Military Hospital of China, Changzhou 213000, China
| | - Yan Sun
- National Institute on Drug Dependence, Peking University, Beijing 100191, China
| | - Fan Wang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing 100096, China
| | - Wei-Feng Mi
- Peking University Sixth Hospital/Institute of Mental Health and Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing 100191, China
| | - Le Shi
- Peking University Sixth Hospital/Institute of Mental Health and Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing 100191, China; National Institute on Drug Dependence, Peking University, Beijing 100191, China
| | - Jing-Li Yue
- Peking University Sixth Hospital/Institute of Mental Health and Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing 100191, China
| | - Fu-De Yang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing 100096, China
| | - Lin Lu
- Peking University Sixth Hospital/Institute of Mental Health and Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing 100191, China; National Clinical Research Center for Mental Disorder, Peking University, Beijing 100191, China.
| |
Collapse
|
14
|
Zhang XY, Tan YL, Chen DC, Tan SP, Yang FD, Wu HE, Zunta-Soares GB, Huang XF, Kosten TR, Soares JC. Interaction of BDNF with cytokines in chronic schizophrenia. Brain Behav Immun 2016; 51:169-175. [PMID: 26407757 DOI: 10.1016/j.bbi.2015.09.014] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 09/21/2015] [Accepted: 09/22/2015] [Indexed: 02/08/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) interacts with cytokines. Although both BDNF and cytokines occur at abnormal levels in schizophrenia patients, their interactions have not yet been examined. We therefore compared serum BDNF, TNF-α, interleukin (IL)-2, IL-6, and IL-8 levels in 92 chronically medicated schizophrenia patients and 60 healthy controls. We correlated these serum levels within these subject groups with each other and with clinical symptoms assessed according to the Positive and Negative Syndrome Scale (PANSS). Compared to the control group, the schizophrenia patients had significantly lower BDNF and TNF-α levels, and higher IL-2, IL-6, and IL-8 levels. The patients also showed a significant positive correlation between BDNF and both IL-2 and IL-8 levels, and low BDNF and TNF-α levels together were associated with poor performance on the PANSS cognitive factor. Thus, an interaction between cytokines and neurotrophic factors may be implicated in the pathophysiology of chronic schizophrenia. In particular, the cytokine TNF-α may interact with BNDF causing cognitive impairment.
Collapse
Affiliation(s)
- Xiang Yang Zhang
- Psychiatry Research Center, Beijing HuiLongGuan Hospital, Peking University, Beijing, China; Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, Houston, TX, USA.
| | - Yun-Long Tan
- Psychiatry Research Center, Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Da-Chun Chen
- Psychiatry Research Center, Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Shu-Ping Tan
- Psychiatry Research Center, Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Fu-De Yang
- Psychiatry Research Center, Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Hanjing Emily Wu
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Giovana B Zunta-Soares
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Xu-Feng Huang
- Centre for Translational Neuroscience, School of Medicine, University of Wollongong, and Illawarra Health and Medical Research Institute, NSW, Australia
| | - Thomas R Kosten
- Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
| | - Jair C Soares
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, Houston, TX, USA
| |
Collapse
|
15
|
Xin LM, Chen L, Ji ZP, Zhang SY, Wang J, Liu YH, Chen DF, Yang FD, Wang G, Fang YR, Lu Z, Yang HC, Hu J, Chen ZY, Huang Y, Sun J, Wang XP, Li HC, Zhang JB, Si TM. Risk Factors for Anxiety in Major Depressive Disorder Patients. Clin Psychopharmacol Neurosci 2015; 13:263-8. [PMID: 26598584 PMCID: PMC4662170 DOI: 10.9758/cpn.2015.13.3.263] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 04/22/2015] [Accepted: 04/27/2015] [Indexed: 02/05/2023]
Abstract
Objective To analyze the sociodemographic and clinical factors related to anxiety in patients with major depressive disorder (MDD). Methods This study involved a secondary analysis of data obtained from the Diagnostic Assessment Service for People with Bipolar Disorders in China (DASP), which was initiated by the Chinese Society of Psychiatry (CSP) and conducted from September 1, 2010 to February 28, 2011. Based on the presence or absence of anxiety-related characteristics, 1,178 MDD patients were classified as suffering from anxious depression (n=915) or non-anxious depression (n=263), respectively. Results Compared with the non-anxious group, the anxious-depression group had an older age at onset (t=−4.39, p<0.001), were older (t=−4.69, p<0.001), reported more lifetime depressive episodes (z=−3.24, p=0.001), were more likely to experience seasonal depressive episodes (χ2=6.896, p=0.009) and depressive episodes following stressful life events (χ2=59.350, p<0.001), and were more likely to have a family history of psychiatric disorders (χ2=6.091, p=0.014). Their positive and total scores on the Mood Disorder Questionnaire (MDQ) and the 32-item Hypomania Checklist (HCL-32) (p<0.05) were also lower. The logistic regression analysis indicated that age (odds ratio [OR]=1.03, p<0.001), a lower total MDQ score (OR=0.94, p=0.011), depressive episodes following stressful life events (OR=3.04, p<0.001), and seasonal depressive episodes (OR=1.75, p=0.039) were significantly associated with anxious depression. Conclusion These findings indicate that older age, fewer subclinical bipolar features, an increased number of depressive episodes following stressful life events, and seasonal depressive episodes may be risk factors for anxiety-related characteristics in patients with MDD.
Collapse
Affiliation(s)
- Li-Min Xin
- Peking University Sixth Hospital/Institute of Mental Health, National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital).,Beijing Huilongguan Hospital, Beijing, China
| | - Lin Chen
- Beijing Huilongguan Hospital, Beijing, China
| | - Zhen-Peng Ji
- School of Public Health, Peking University Health Science Center, Beijing, China
| | | | - Jun Wang
- Beijing Huilongguan Hospital, Beijing, China
| | | | - Da-Fang Chen
- School of Public Health, Peking University Health Science Center, Beijing, China
| | - Fu-De Yang
- Beijing Huilongguan Hospital, Beijing, China
| | - Gang Wang
- Mood Disorders Center, Beijing Anding Hospital, Capital Medical University, Beijing, China
| | - Yi-Ru Fang
- Division of Mood Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zheng Lu
- Shanghai Tongji Hospital, Tongji University Medical School, Shanghai, China
| | - Hai-Chen Yang
- Division of Mood Disorders, Shenzhen Mental Health Centre, Shenzhen, China
| | - Jian Hu
- The First Hospital of Harbin Medical University, Harbin, China
| | - Zhi-Yu Chen
- Hangzhou Seventh People's Hospital, Hangzhou, China
| | - Yi Huang
- West China Hospital, Sichuan University, Chengdu, China
| | - Jing Sun
- The Affiliated Brain Hospital, Nanjing Medical University, Nanjing, China
| | - Xiao-Ping Wang
- Mental Health Institute, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hui-Chun Li
- The Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Jin-Bei Zhang
- The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Tian-Mei Si
- Peking University Sixth Hospital/Institute of Mental Health, National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital)
| |
Collapse
|
16
|
Chen JX, Su YA, Bian QT, Wei LH, Zhang RZ, Liu YH, Correll C, Soares JC, Yang FD, Wang SL, Zhang XY. Adjunctive aripiprazole in the treatment of risperidone-induced hyperprolactinemia: A randomized, double-blind, placebo-controlled, dose-response study. Psychoneuroendocrinology 2015; 58:130-40. [PMID: 25981348 DOI: 10.1016/j.psyneuen.2015.04.011] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 03/27/2015] [Accepted: 04/16/2015] [Indexed: 01/28/2023]
Abstract
Hyperprolactinemia is an unwanted adverse effect associated with several antipsychotics. The addition of partial dopamine receptor agonist aripiprazole may attenuate antipsychotic-induced hyperprolactinemia effectively. However, the ideal dosing regimen for this purpose is unknown. We aimed to evaluate the dose effects of adjunctive treatment with aripiprazole on prolactin levels and hyperprolactinemia in schizophrenia patients. Stable subjects 18-45 years old with schizophrenia and hyperprolactinemia (i.e., >24 ng/ml for females and >20 ng/ml for males) were randomly assigned to receive 8 weeks of placebo (n=30) or oral aripiprazole 5mg/day (n=30), 10mg/day (n=29), or 20mg/day (n=30) added on to fixed dose risperidone treatment. Serum prolactin levels were measured at baseline and after 2, 4 and 8 weeks; clinical symptoms and side effects were assessed at baseline and week 8 using the Positive and Negative Syndrome Scale, Clinical Global Impressions Severity scale, Barnes Akathisia Scale, Simpson-Angus Scale and UKU Side Effects Rating Scale. Of 119 randomized patients, 107 (89.9%) completed the 8-week study. At study end, all three aripiprazole doses resulted in significantly lower prolactin levels (beginning at week 2), higher response rates (≥30% prolactin reduction) and higher prolactin normalization rates than placebo. Effects were significantly greater in the 10 and 20mg/day groups than the 5mg/day group. No significant changes were observed in any treatment groups regarding psychopathology and adverse effect ratings. Adjunctive aripiprazole treatment was effective and safe for resolving risperidone-induced hyperprolactinemia, producing significant and almost maximal improvements by week 2 without significant effects on psychopathology and side effects.
Collapse
Affiliation(s)
- Jing-Xu Chen
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing 100096, China
| | - Yun-Ai Su
- Peking University Sixth Hospital/Institute of Mental Health, Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, China
| | - Qing-Tao Bian
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing 100096, China
| | - Li-He Wei
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing 100096, China
| | - Rong-Zhen Zhang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing 100096, China
| | - Yan-Hong Liu
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing 100096, China
| | - Christoph Correll
- The Zucker Hillside Hospital, Psychiatry Research, North Shore-Long Island Jewish Health System, Glen Oaks, NY, USA
| | - Jair C Soares
- Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Fu-De Yang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing 100096, China
| | - Shao-Li Wang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing 100096, China
| | - Xiang-Yang Zhang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing 100096, China; Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA.
| |
Collapse
|
17
|
Li P, Wu P, Xin X, Fan YL, Wang GB, Wang F, Ma MY, Xue MM, Luo YX, Yang FD, Bao YP, Shi J, Sun HQ, Lu L. Incubation of alcohol craving during abstinence in patients with alcohol dependence. Addict Biol 2015; 20:513-22. [PMID: 24698092 DOI: 10.1111/adb.12140] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Time-dependent increases in cue-induced nicotine and methamphetamine craving during abstinence were recently reported in human drug-dependent individuals. In the present study, we sought to determine whether this 'incubation of craving' phenomenon also occurs in alcoholics. Four groups of 80 inpatient adult male alcoholics were assessed in a single session (between-group design) for cue-induced alcohol craving at 7, 14, 30 and 60 days of abstinence. Another group that included 19 patients was repeatedly tested for cue-induced alcohol craving at the same abstinence days as above. Other psychological and physiological measures were assessed at the four abstinence timepoints. Cue-induced alcohol craving measured with visual analogue scales was the highest at 60 days of abstinence both between and within groups. However, heart rate, blood pressure and skin conductance responses did not differ between abstinent groups. These results provide evidence of the incubation of alcohol craving in humans, extending previous reports with smokers and methamphetamine addicts.
Collapse
Affiliation(s)
- Peng Li
- Institute of Mental Health/Peking University Sixth Hospital; Key Laboratory of Mental Health; Ministry of Health; China
- National Institute on Drug Dependence; Peking University; China
| | - Ping Wu
- National Institute on Drug Dependence; Peking University; China
| | - Xue Xin
- Department of Physiology; Basic Medical College; Inner Mongolia Medical University; China
| | - Yun-Li Fan
- Department of Alcohol and Drug Dependence; Beijing Hui-Long-Guan Hospital; Peking University; China
| | - Gui-Bin Wang
- Institute of Material Medical; Chinese Academy of Medical Sciences and Peking Union Medical College; China
| | - Fan Wang
- Department of Alcohol and Drug Dependence; Beijing Hui-Long-Guan Hospital; Peking University; China
| | - Meng-Ying Ma
- Department of Alcohol and Drug Dependence; Beijing Hui-Long-Guan Hospital; Peking University; China
| | - Ming-Ming Xue
- Department of Physiology; Basic Medical College; Inner Mongolia Medical University; China
| | - Yi-Xiao Luo
- Institute of Mental Health/Peking University Sixth Hospital; Key Laboratory of Mental Health; Ministry of Health; China
- National Institute on Drug Dependence; Peking University; China
| | - Fu-De Yang
- Department of Alcohol and Drug Dependence; Beijing Hui-Long-Guan Hospital; Peking University; China
| | - Yan-Ping Bao
- National Institute on Drug Dependence; Peking University; China
| | - Jie Shi
- National Institute on Drug Dependence; Peking University; China
| | - Hong-Qiang Sun
- Institute of Mental Health/Peking University Sixth Hospital; Key Laboratory of Mental Health; Ministry of Health; China
| | - Lin Lu
- Institute of Mental Health/Peking University Sixth Hospital; Key Laboratory of Mental Health; Ministry of Health; China
- National Institute on Drug Dependence; Peking University; China
| |
Collapse
|
18
|
An HM, Tan YL, Shi J, Wang ZR, Soars JC, Wu JQ, Yang FD, Huang XF, Zhang XY. Altered IL-2, IL-6 and IL-8 serum levels in schizophrenia patients with tardive dyskinesia. Schizophr Res 2015; 162:261-8. [PMID: 25600548 DOI: 10.1016/j.schres.2014.12.037] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 11/29/2014] [Accepted: 12/29/2014] [Indexed: 11/27/2022]
Abstract
Immune deregulation has been postulated to be one of the mechanisms underlying the pathogenesis of tardive dyskinesia (TD). We hypothesized that interleukins would have a link with TD in schizophrenia patients. In this study, the serum IL-2, IL-6 and IL-8 levels were examined by enzyme-linked immunosorbent assay (ELISA) in schizophrenia patients with TD (n=48) and without TD (n=45), and healthy controls (n=44). The psychopathological symptoms of schizophrenia were assessed by the Positive and Negative Syndrome Scale (PANSS). The severity of TD was evaluated using Abnormal Involuntary Movement Scale (AIMS). The results showed that serum IL-2, IL-6 and IL-8 levels were significantly different among schizophrenia patients with TD and without TD and normal controls. Moreover, IL-2 level was significantly correlated with PANSS positive subscale and general subscale in patients with TD and without TD. In addition, IL-2 level was positively correlated with AIMS score in TD patients. The results supported that immune disturbance is related to the schizophrenia patients, especially to the patients with TD and ILs might play an important role in the pathophysiology of schizophrenia patients with TD.
Collapse
Affiliation(s)
- Hui-Mei An
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Yun-Long Tan
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Jing Shi
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Zhi-Ren Wang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Jair C Soars
- Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Jing Qin Wu
- School of Biomedical Sciences and Pharmacy, Faculty of Health, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
| | - Fu-De Yang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Xu-Feng Huang
- Centre for Translational Neuroscience, School of Medicine, Illawarra Health and Medical Research Institute, University of Wollongong, NSW, Australia
| | - Xiang Yang Zhang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China; Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA.
| |
Collapse
|
19
|
Hui L, Ye M, Tang W, Zhang F, Liu J, Liu L, Chen Y, Chen DC, Tan YL, Yang FD, Zhang XY. Obesity correlates with fewer symptoms in schizophrenia treated with long-term clozapine: gender difference. Psychiatry Res 2015; 225:741-2. [PMID: 25595339 DOI: 10.1016/j.psychres.2014.12.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 09/06/2014] [Accepted: 12/22/2014] [Indexed: 11/16/2022]
Affiliation(s)
- Li Hui
- Institute of Kangning Mental Health, Wenzhou Kangning Hospital, Wenzhou, Zhejiang, China
| | - Minjie Ye
- Institute of Kangning Mental Health, Wenzhou Kangning Hospital, Wenzhou, Zhejiang, China
| | - Wei Tang
- Institute of Kangning Mental Health, Wenzhou Kangning Hospital, Wenzhou, Zhejiang, China
| | - Feixue Zhang
- Institute of Kangning Mental Health, Wenzhou Kangning Hospital, Wenzhou, Zhejiang, China
| | - Jiahong Liu
- Institute of Kangning Mental Health, Wenzhou Kangning Hospital, Wenzhou, Zhejiang, China
| | - Linjing Liu
- Institute of Kangning Mental Health, Wenzhou Kangning Hospital, Wenzhou, Zhejiang, China
| | - Yuanling Chen
- Institute of Kangning Mental Health, Wenzhou Kangning Hospital, Wenzhou, Zhejiang, China
| | - Da-Chun Chen
- Psychiatry Research Center, Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Yun-Long Tan
- Psychiatry Research Center, Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Fu-De Yang
- Psychiatry Research Center, Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Xiang Yang Zhang
- Psychiatry Research Center, Beijing HuiLongGuan Hospital, Peking University, Beijing, China; Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA.
| |
Collapse
|
20
|
Zhang XY, Chen DC, Tan YL, Tan SP, Wang ZR, Yang FD, Okusaga OO, Zunta-Soares GB, Soares JC. The interplay between BDNF and oxidative stress in chronic schizophrenia. Psychoneuroendocrinology 2015; 51:201-8. [PMID: 25462893 DOI: 10.1016/j.psyneuen.2014.09.029] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 09/06/2014] [Accepted: 09/29/2014] [Indexed: 11/30/2022]
Abstract
Neurodegenerative processes may be involved in the pathogenesis of schizophrenia. Brain-derived neurotrophic factor (BDNF), the most widely distributed neurotrophin and oxidative stress (OS) may be critical for several pathological manifestations of neurodegenerative disorders. Accumulating evidence suggests that both BDNF and OS may be involved in the pathophysiology of schizophrenia. However, the possible interaction between BDNF and OS has been under-investigated. Serum BDNF, plasma malondialdehyde (MDA) levels and superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and catalase (CAT) activities were analyzed using established procedures in 164 chronic medicated schizophrenia and 50 healthy controls. Schizophrenic symptoms were assessed by the Positive and Negative Syndrome Scale (PANSS) with cognitive and depressive factors derived from the five factor model of the PANSS. Compared to the control group, the patients exhibited a significant decrease in BDNF levels, in the activities of SOD and GSH-Px but a significant increase in MDA levels. In patients, but not in controls, we observed a significant negative correlation between BDNF and SOD. Furthermore, the interaction between BDNF and CAT was associated with the PANSS cognitive factor, and the interaction between BDNF and GSH-Px with the PANSS depressive factor. Both decreased BDNF levels and OS may be implicated in the pathophysiology of chronic schizophrenia. Their inverse association only in the schizophrenia group may reflect a pathological mechanism involving an interaction of oxidative damage and neurotrophin dysfunction. Moreover, OS may interact with the BDNF system to influence the clinical symptoms and cognitive impairment in schizophrenia, which is line with the neurodevelopmental hypothesis of schizophrenia.
Collapse
Affiliation(s)
- Xiang Yang Zhang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China; Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA.
| | - Da-Chun Chen
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Yun-Long Tan
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Shu-Ping Tan
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Zhi-Ren Wang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Fu-De Yang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Olaoluwa O Okusaga
- Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Giovana B Zunta-Soares
- Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Jair C Soares
- Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA.
| |
Collapse
|
21
|
Sun HQ, Chen HM, Yang FD, Lu L, Kosten TR. Epidemiological trends and the advances of treatments of amphetamine-type stimulants (ATS) in China. Am J Addict 2014; 23:313-7. [PMID: 24724890 DOI: 10.1111/j.1521-0391.2014.12116.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 08/08/2013] [Accepted: 08/19/2013] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Amphetamine-type stimulants (ATS) have quickly spread and been widely abused in many parts of the world, particularly in China. This review focuses on and describes the epidemiological trends and the advances of treatments of ATS in China. METHODS A descriptive study based on literature identified from searches of the China National Knowledge Infrastructure (1979-2013), PubMed databases, hand-picked references, and online references with emphasis on epidemiology, treatment and traditional Chinese medicine. This review covers some traditional Chinese treatments and their complementary Western approaches. RESULTS AND CONCLUSIONS The epidemiological trends of ATS in China have led to its being 2.2 times the rate of morphine abuse and second only to marijuana abuse. The treatment programs in China have used traditional herbal approaches as well as acupuncture, often in combination with Western medications such as fluoxetine for depression associated with ATS abuse. Other herbal treatments have reversed the cardiac arrhythmias associated with ATS intoxication, and acupuncture has been used successfully for the protracted depressive and somatic symptoms of ATS withdrawal over a period of 3 months. SCIENTIFIC SIGNIFICANCE These traditional Chinese treatments may be increasingly available to the world, but will remain a consistent complementary therapy for ATS in China and the Far East, where ATS has become such a prevalent problem.
Collapse
Affiliation(s)
- Hong-Qiang Sun
- Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas; Department of Alcohol and Drug Dependence, Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | | | | | | | | |
Collapse
|
22
|
Han X, Yuan YB, Yu X, Zhao JP, Wang CY, Lu Z, Yang FD, Dong H, Wu YF, Ungvari GS, Xiang YT, Chiu HFK. The Chinese First-Episode Schizophrenia Trial: background and study design. East Asian Arch Psychiatry 2014; 24:169-173. [PMID: 25482837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Schizophrenia is a complex illness with unknown aetiology and pathogenesis. Currently, a considerable number of patients with schizophrenia do not receive standardised and systematic treatment in China. In the past years, many controlled trials have been conducted in chronic schizophrenia. In contrast, research on first-episode schizophrenia is lacking. This paper describes the background and design of the Chinese First-Episode Schizophrenia Trial project--a multicentre, randomised, open-label clinical trial. A total of 600 first-episode schizophrenia patients were randomly divided into 3 groups and treated with risperidone, aripiprazole, and olanzapine for 1 year. During the study period, only 1 medication change of the 3 antipsychotic medications was allowed.
Collapse
Affiliation(s)
- X Han
- Peking University Sixth Hospital, Peking University Institute of Mental Health, Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - Y B Yuan
- Peking University Sixth Hospital, Peking University Institute of Mental Health, Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - X Yu
- Peking University Sixth Hospital, Peking University Institute of Mental Health, Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - J P Zhao
- Mental Health Institute, the Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - C Y Wang
- Beijing Anding Hospital, Capital Medical University, Beijing, China
| | - Z Lu
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - F D Yang
- Center for Biological Psychiatry, Beijing Hui-Long-Guan Hospital, Beijing, China
| | - H Dong
- Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan province, China
| | - Y F Wu
- The George Institute for Global Health at Peking University Health Science Center, Beijing, China
| | - G S Ungvari
- The University of Notre Dame Australia / Marian Centre, Perth, Australia
| | - Y T Xiang
- Faculty of Health Sciences, University of Macau, Macao, China
| | - H F K Chiu
- Department of Psychiatry, The Chinese University of Hong Kong, Hong Kong SAR, China
| |
Collapse
|
23
|
Zhang XY, Chen DC, Tan YL, Tan SP, Wang ZR, Yang FD, Xiu MH, Hui L, Lv MH, Zunta-Soares GB, Soares JC. Gender difference in association of cognition with BDNF in chronic schizophrenia. Psychoneuroendocrinology 2014; 48:136-46. [PMID: 24999831 DOI: 10.1016/j.psyneuen.2014.06.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 06/09/2014] [Accepted: 06/09/2014] [Indexed: 01/06/2023]
Abstract
While numerous studies have reported that brain-derived neurotrophic factor (BDNF) may be involved in the pathophysiology of schizophrenia, very few studies have explored its association with cognitive impairment or gender differences in schizophrenia which we explored. We compared gender differences in 248 chronic schizophrenic patients (male/female=185/63) to 188 healthy controls (male/female=98/90) on the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) and serum BDNF. Schizophrenic symptoms were assessed using the Positive and Negative Syndrome Scale (PANSS). Our results showed that schizophrenic patients performed worse than normals on most of the cognitive tasks, and male patients had significantly lower immediate memory and delayed memory scores than female patients. BDNF levels were significantly lower in patients than controls, and male patients had significantly lower BDNF levels than female patients. For the patients, BDNF was positively associated with immediate memory and the RBANS total score. Furthermore, these associations were only observed in female not male patients. Among healthy controls, no gender difference was observed in cognitive domains and BDNF levels, or in the association between BDNF and cognition. Our results suggest gender differences in cognitive impairments, BDNF levels and their association in chronic patients with schizophrenia. However, the findings should be regarded as preliminary due to the cross-sectional design and our chronic patients, which need replication in a first-episode and drug naïve patients using a longitudinal study.
Collapse
Affiliation(s)
- Xiang Yang Zhang
- Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA; Beijing HuiLongGuan Hospital, Peking University, Beijing, China.
| | - Da-Chun Chen
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Yun-Long Tan
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Shu-Ping Tan
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Zhi-Ren Wang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Fu-De Yang
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Mei-Hong Xiu
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Li Hui
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Meng-Han Lv
- Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - Giovana B Zunta-Soares
- Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Jair C Soares
- Department of Psychiatry and Behavioral Sciences, Harris County Psychiatric Center, The University of Texas Health Science Center at Houston, Houston, TX, USA.
| |
Collapse
|
24
|
Fan FM, Tan SP, Yang FD, Tan YL, Zhao YL, Chen N, Li BB, Song CS, Wang YH, Jin Z, Zhou DF, Milham MP, Zou YZ, Zuo XN. Ventral medial prefrontal functional connectivity and emotion regulation in chronic schizophrenia: a pilot study. Neurosci Bull 2013; 29:59-74. [PMID: 23319314 PMCID: PMC5561861 DOI: 10.1007/s12264-013-1300-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2012] [Accepted: 07/26/2012] [Indexed: 11/27/2022] Open
Abstract
People with schizophrenia exhibit impaired social cognitive functions, particularly emotion regulation. Abnormal activations of the ventral medial prefrontal cortex (vMPFC) during emotional tasks have been demonstrated in schizophrenia, suggesting its important role in emotion processing in patients. We used the resting-state functional connectivity approach, setting a functionally relevant region, the vMPFC, as a seed region to examine the intrinsic functional interactions and communication between the vMPFC and other brain regions in schizophrenic patients. We found hypo-connectivity between the vMPFC and the medial frontal cortex, right middle temporal lobe (MTL), right hippocampus, parahippocampal cortex (PHC) and amygdala. Further, there was a decreased strength of the negative connectivity (or anticorrelation) between the vMPFC and the bilateral dorsal lateral prefrontal cortex (DLPFC) and pre-supplementary motor areas. Among these connectivity alterations, reduced vMPFC-DLPFC connectivity was positively correlated with positive symptoms on the Positive and Negative Syndrome Scale, while vMPFC-right MTL/PHC/amygdala functional connectivity was positively correlated with the performance of emotional regulation in patients. These findings imply that communication and coordination throughout the brain networks are disrupted in schizophrenia. The emotional correlates of vMPFC connectivity suggest a role of the hypo-connectivity between these regions in the neuropathology of abnormal social cognition in chronic schizophrenia.
Collapse
Affiliation(s)
- Feng-Mei Fan
- Psychiatry Research Center, Beijing Huilongguan Hospital, Beijing, 100096 China
- Laboratory for Functional Connectome and Development, Key Laboratory of Behavioral Science, Magnetic Resonance Imaging Research Center, Institute of Psychology, Chinese Academy of Sciences, Beijing, 100101 China
| | - Shu-Ping Tan
- Psychiatry Research Center, Beijing Huilongguan Hospital, Beijing, 100096 China
| | - Fu-De Yang
- Psychiatry Research Center, Beijing Huilongguan Hospital, Beijing, 100096 China
| | - Yun-Long Tan
- Psychiatry Research Center, Beijing Huilongguan Hospital, Beijing, 100096 China
| | - Yan-Li Zhao
- Psychiatry Research Center, Beijing Huilongguan Hospital, Beijing, 100096 China
| | - Nan Chen
- Psychiatry Research Center, Beijing Huilongguan Hospital, Beijing, 100096 China
| | - Bin-Bin Li
- Psychiatry Research Center, Beijing Huilongguan Hospital, Beijing, 100096 China
| | - Chong-Sheng Song
- Psychiatry Research Center, Beijing Huilongguan Hospital, Beijing, 100096 China
| | - Yun-Hui Wang
- Psychiatry Research Center, Beijing Huilongguan Hospital, Beijing, 100096 China
| | - Zhen Jin
- Magnetic Resonance Imaging Unit, The 306th Hospital of PLA, Beijing, 100091 China
| | - Dong-Feng Zhou
- Institute of Mental Health, Peking University, Beijing, 100191 China
| | - Michael P. Milham
- Center for the Developing Brain, Child Mind Institute, New York, NY 10022 USA
- Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY 10962 USA
| | - Yi-Zhuang Zou
- Psychiatry Research Center, Beijing Huilongguan Hospital, Beijing, 100096 China
| | - Xi-Nian Zuo
- Laboratory for Functional Connectome and Development, Key Laboratory of Behavioral Science, Magnetic Resonance Imaging Research Center, Institute of Psychology, Chinese Academy of Sciences, Beijing, 100101 China
| |
Collapse
|
25
|
Sun HQ, Liu Y, Li P, Bao YP, Sheng LX, Zhang RL, Cao YJ, Di XL, Yang FD, Wang F, Luo YX, Lu L. Effects of acute combined serotonin and dopamine depletion on cue-induced drinking intention/desire and cognitive function in patients with alcohol dependence. Drug Alcohol Depend 2012; 124:200-6. [PMID: 22325080 DOI: 10.1016/j.drugalcdep.2012.01.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2011] [Revised: 12/31/2011] [Accepted: 01/01/2012] [Indexed: 12/22/2022]
Abstract
BACKGROUND Alcohol cues can precipitate the desire to drink and cause relapse in recovering alcohol-dependent patients. Serotonin and dopamine may play a role in alcohol cue-induced craving. Acute combined tryptophan (Trp), tyrosine (Tyr), and phenylalanine (Phe) depletion (CMD) in the diet attenuates the synthesis of serotonin and dopamine in the human brain. However, no study of the effects of acute CMD has been previously conducted. Therefore, we investigated whether the attenuation of serotonin and dopamine synthesis changes cue-induced alcohol craving in recently abstinent alcoholics. METHODS In this double-blind, randomized, placebo-controlled, crossover design, 12 male patients who met the Diagnostic and Statistical Manual of Mental Disorders, 4th edition, criteria for alcohol dependence were divided into two conditions: (1) monoamine depletion (i.e., consumption of a concentrated amino acid beverage that resulted in a rapid and significant decrease in plasma-free Tyr/Phe/Trp) and (2) balanced condition (i.e., consumption of a similar beverage that contained Tyr/Phe/Trp). The participants were scheduled for two experimental sessions, with an interval of ≥7 days. The cue-induced craving test session was conducted 6h after each amino acid beverage administration. Drinking urge, blood pressure, heart rate, working memory, and attention/psychomotor performance were assessed before and after administration. RESULTS Compared with the balanced condition, the monoamine depletion condition significantly increased drinking intention/desire and diastolic blood pressure. Cognitive performance was not different between the two conditions. CONCLUSIONS Acute combined serotonin and dopamine depletion may increase drinking intention/desire and diastolic blood pressure without influencing cognitive function.
Collapse
Affiliation(s)
- Hong-Qiang Sun
- National Institute on Drug Dependence, Peking University, Beijing 100191, China.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Sun HQ, Guo S, Chen DF, Jiang ZN, Liu Y, Di XL, Yang FD, Zhang XY, Kosten TR, Lu L. Family support and employment as predictors of smoking cessation success: a randomized, double-blind, placebo-controlled trial of nicotine sublingual tablets in chinese smokers. Am J Drug Alcohol Abuse 2009; 35:183-8. [PMID: 19462302 DOI: 10.1080/00952990902839794] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND The purpose of this study is to assess social support and demographic factors that influence the success of smoking cessation aided with sublingual nicotine tablets in a Han Chinese population. METHODS We randomly allocated 211 Beijing residents who smoked >or= 10 cigarettes a day for at least 1 year into a double-blind, placebo-controlled 3-month randomized smoking cessation trial using sublingual nicotine replacement therapy (NRT). Self-reports of sustained smoking cessation were verified during the study by expired carbon monoxide concentrations and urine-cotinine concentrations. Logistic regression analysis used an intent to treat sample for sociodemographic associations with abstinence and reduction in smoking. RESULTS The abstinence rates at the end of treatment for NRT vs. placebo were 52 % vs .19%, and smoking reduction (reduced to at least 50% of baseline) rates for NRT vs. placebo were 43% vs .15% for a total response rate with NRT of 95% for either stopping completely or reducing smoking by 50%. The only factor strongly associated with successful smoking cessation after 3 months of sublingual NRT was being married (adjusted odds ratio 2.18; 95%confidence interval 1.10-4.33). Smoking association, on the other hand, was associated with being married and with employment as a white collar worker (2.24; 1.03 to 4.86). CONCLUSIONS These findings suggest the need for a more in-depth examination of the impact of being married and employment as a white collar worker (rather than manual laborer) in order to develop better targeted interventions for improving smoking cessation interventions.
Collapse
Affiliation(s)
- Hong-Qiang Sun
- National Institute on Drug Dependence, Peking University, Beijing, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Hamann CS, Lentainge S, Li LS, Salem JS, Yang FD, Cooperman BS. Chimeric small subunit inhibitors of mammalian ribonucleotide reductase: a dual function for the R2 C-terminus? Protein Eng 1998; 11:219-24. [PMID: 9613846 DOI: 10.1093/protein/11.3.219] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Here we report on the formation and activity of complexes between the large subunit (mR1) dimer of mouse ribonucleotide reductase (mRR) and small subunit chimeric dimers (cR2) derived from Escherichia coli and mouse small subunits. cR2 subunits were constructed by substituting mouse C-terminal gene sequences, coding for either 7 or 33 amino acid residues, for the corresponding E.coli R2 (eR2) sequences, with the remainder of the gene corresponding to eR2. The purified cR2s contained the micro-oxo bridged diferric center and tyrosine radical necessary for reductase activity, although the radical signal was broadened compared with wild-type eR2. Neither chimera formed an active complex with mR1, but each was a competitive inhibitor, with respect to mR2, of mRR activity. The inhibition constants for both chimeras were similar, and were sevenfold higher than the dissociation constant of mR2 dimer to mR1 dimer (0.24 +/- 0.02 microM). Analysis of inhibition data showed that chimeric R2 subunits bind to mammalian R1 with a 1:1 (R1:R2) stoichiometry and permit the inference that both C-termini in a cR2 dimer bind to the two sites per mR1 dimer. The lack of enzymatic activity in the mR1-cR2 complex is attributed to perturbation or elimination of interactions linking the tyrosine radical/dinuclear iron center and the C-terminus within R2.
Collapse
Affiliation(s)
- C S Hamann
- Department of Chemistry, School of Medicine, University of Pennsylvania, Philadelphia 19104, USA
| | | | | | | | | | | |
Collapse
|
28
|
Abstract
Eucaryotic ribonucleotide reductases (RR) catalyze the reduction of ribonucleoside diphosphates to 2'-deoxyribonucleoside diphosphates. Each has an R1(2)R2(2) quaternary structure with each subunit playing a critical role in catalysis. Separation of the subunits results in loss of activity. Previous studies have demonstrated that peptides corresponding to the C-terminus of R2 disrupt subunit association by competion with R2 and have potential usefulness as therapeutics. Extensive structure-function studies have been carried out on peptide inhibition of herpes simplex RR in an effort to develop antiviral agents based on the observation that the herpes simplex R2 C-terminus, YAGAVVNDL, is quite different from the corresponding mammalian sequence. In this work we report a detailed structure-function analysis of peptide inhibition of mammalian and, to a more limited extent, Saccharomyces cerevisiae RRs. Our results for mammalian RR support the following conclusions with regard to the effect of substitution on inhibitory potency: (a) the N-acetylated R2 C-terminal heptapeptide N-AcPhe384Thr385Leu386Asp387Ala388Asp389Phe390 (N-AcF7TLDADF1) is the minimal core peptide length required; deletion of the N-terminus or of middle positions (resulting in penta- and hexapeptides) results in large losses in inhibitory potency; (b) a free carboxylate is required on the C-terminal Phe; (c) Phe is strongly preferred to Leu in positions 1 and 7 and a bulky aliphatic group is preferred in position 5; (d) neither negative charge in positions 2 or 4 nor a polar side chain in position 6 are required for peptide binding, contrary to what evolutionary patterns in the R2 C-terminus of RR would suggest. S. cerevisiae RR displays a similar length dependence on the corresponding N-acetylated R2 C-terminal heptapeptide, N-AcFTFNEDF. This peptide has a 4-fold higher inhibitory potency toward S. cerevisiae RR than toward mammalian RR. Such selectivity raises the possibility that peptide analogs related to R2 C-termini can be developed as therapeutic agents even against organisms having R2 C-terminal sequences similar to that of mammalian RR.
Collapse
Affiliation(s)
- A Fisher
- Department of Chemistry, University of Pennsylvania, Philadelphia 19104-6323
| | | | | | | |
Collapse
|
29
|
Rubin H, Salem JS, Li LS, Yang FD, Mama S, Wang ZM, Fisher A, Hamann CS, Cooperman BS. Cloning, sequence determination, and regulation of the ribonucleotide reductase subunits from Plasmodium falciparum: a target for antimalarial therapy. Proc Natl Acad Sci U S A 1993; 90:9280-4. [PMID: 8415692 PMCID: PMC47551 DOI: 10.1073/pnas.90.20.9280] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Malaria remains a leading cause of morbidity and mortality worldwide, accounting for more than one million deaths annually. We have focused on the reduction of ribonucleotides to 2'-deoxyribonucleotides, catalyzed by ribonucleotide reductase, which represents the rate-determining step in DNA replication as a target for antimalarial agents. We report the full-length DNA sequence corresponding to the large (PfR1) and small (PfR2) subunits of Plasmodium falciparum ribonucleotide reductase. The small subunit (PfR2) contains the major catalytic motif consisting of a tyrosyl radical and a dinuclear Fe site. Whereas PfR2 shares 59% amino acid identity with human R2, a striking sequence divergence between human R2 and PfR2 at the C terminus may provide a selective target for inhibition of the malarial enzyme. A synthetic oligopeptide corresponding to the C-terminal 7 residues of PfR2 inhibits mammalian ribonucleotide reductase at concentrations approximately 10-fold higher than that predicted to inhibit malarial R2. The gene encoding the large subunit (PfR1) contains a single intron. The cysteines thought to be involved in the reduction mechanism are conserved. In contrast to mammalian ribonucleotide reductase, the genes for PfR1 and PfR2 are located on the same chromosome and the accumulation of mRNAs for the two subunits follow different temporal patterns during the cell cycle.
Collapse
Affiliation(s)
- H Rubin
- Department of Medicine, University of Pennsylvania, Philadelphia 19104
| | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Yang FD, Spanevello RA, Celiker I, Hirschmann R, Rubin H, Cooperman BS. The carboxyl terminus heptapeptide of the R2 subunit of mammalian ribonucleotide reductase inhibits enzyme activity and can be used to purify the R1 subunit. FEBS Lett 1990; 272:61-4. [PMID: 2226836 DOI: 10.1016/0014-5793(90)80449-s] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The heptapeptide, FTLDADF, identical in sequence to the last seven amino acid residues of the carboxyl terminus of the R2 subunit of mouse ribonucleotide reductase (RR), and its N alpha-acetyl derivative both inhibit calf thymus RR. The N alpha-acetyl derivative is considerably more potent, displaying a K1 of 20 microM. The same K1 was found for N-AcFTLDADF inhibition of a reconstituted ribonucleotide reductase from calf thymus R1 and mouse R2, indicating that the C-termini of calf R2 and mouse R2 might be identical. Our results, taken together with previous results of others on inhibition of viral RR, suggest that inhibition of RRs by peptides mimicking the C-terminus of R2 may be a general phenomenon. In addition, we have shown that an affinity column, FTLDADF-Sepharose 4B, can be used to prepare approximately 95% pure calf thymus R1, devoid of contamination with R2, in a very simple procedure that should be generally applicable to R1 purification from many sources.
Collapse
Affiliation(s)
- F D Yang
- Department of Chemistry, University of Pennsylvania, Philadelphia 19104
| | | | | | | | | | | |
Collapse
|
31
|
Yang FD, Yu L, Yu CA. The nature of the inhibition of 4,7-dioxobenzothiazole derivatives on mitochondrial ubiquinol-cytochrome c reductase. J Biol Chem 1989; 264:891-8. [PMID: 2536027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
To investigate the inhibitory action and binding site of a quinone-like molecule, 5-undecyl-6-hydroxy-4,7-dioxobenzothiazole (UHDBT), a series of 4,7-dioxobenzothiazole derivatives were synthesized and their inhibitory efficiencies studied. Replacing the 6-hydroxyl or 2-hydrogen of UHDBT with a bromo or a methoxy group causes only a slight decrease in inhibitory efficiency, indicating that the 6-hydroxyl or the 2-hydrogen of UHDBT is not a structural requirement for inhibition. 5-Undecyl-6-bromo (or methoxy)-4,7-dioxobenzothiazole shows a pH-dependent inhibition similar to that observed with UHDBT, suggesting that the pH dependence is due to the presence of a dissociable group in the protein complex and not to the deprotonation of the hydroxyl group of the inhibitor. Replacing the 6-hydroxyl group with an azido group causes changes similar to those observed with UHDBT; the inhibition is accompanied by alteration of the epr characteristics of reduced iron-sulfur protein in ubiquinol-cytochrome c reductase. The extent of inhibition is not changed upon illumination of the treated reductase. When the photolyzed, 6-azido-5-(1',2'-[3H] undecyl)-4,7-dioxobenzothiazole [( 3H]6-azido-UDBT)-treated reductase is subjected to organic solvent extraction, no radioactivity is found in the reductase protein. Rather, the radioactivity is located in the phospholipid fraction. A [3H]azido-UDBT-cardiolipin adduct, identified after separation of the phospholipid fraction by high performance liquid chromatography, has 6-azido-UDBT linked to an acyl group, not to the head group of the cardiolipin molecule. These results suggest that inhibition by UHDBT is due to perturbation of specific cardiolipin molecules in ubiquinol-cytochrome c reductase. Since UHDBT and 6-azido-UDBT also inhibit the ubiquinol-cytochrome c reductase activity of delipidated reductase (10% of the original lipid remaining) assayed after reconstitution with ubiquinone and phospholipid, and the [3H]azido-UDBT-cardiolipin adduct is also found in the delipidated reductase, the UHDBT-perturbed cardiolipin molecule is structurally indispensable to reductase and it tightly bound to the reductase protein, most likely the quinone binding proteins.
Collapse
Affiliation(s)
- F D Yang
- Department of Biochemistry, Oklahoma State University, Stillwater 74078
| | | | | |
Collapse
|
32
|
Yang FD, Yu L, Yu CA. The Nature of the Inhibition of 4,7-Dioxobenzothiazole Derivatives on Mitochondrial Ubiquinol-Cytochrome c Reductase. J Biol Chem 1989. [DOI: 10.1016/s0021-9258(19)85026-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
33
|
Gwak SH, Yang FD, Yu L, Yu CA. Phospholipid-dependent interaction between dibromothymoquinone and iron-sulfur protein in mitochondrial ubiquinol-cytochrome c reductase. Biochim Biophys Acta 1987; 890:319-25. [PMID: 3028477 DOI: 10.1016/0005-2728(87)90159-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Dibromothymoquinone (DBMIB) inhibits antimycin A-sensitive ubiquinol-cytochrome c reductase activity; the maximal inhibition is 90%. DBMIB alters the EPR spectra of reduced iron-sulfur protein in intact ubiquinol-cytochrome c reductase. The maximal spectral change occurs with 60 mol inhibitor per mol cytochrome c1 in the reductase. DBMIB causes little alteration in the EPR characteristics of iron-sulfur protein when ubiquinol-cytochrome c reductase is delipidated. When delipidated ubiquinol-cytochrome c reductase is replenished with phospholipid, the effect of DBMIB reappears. However, when DBMIB is added to delipidated protein prior to replenishment with phospholipid, very little spectral alteration is observed. DBMIB does not alter the EPR spectra of purified iron-sulfur protein, with or without phospholipid in the preparation. Reduced DBMIB does not alter the EPR characteristics of iron-sulfur protein in intact or delipidated ubiquinol-cytochrome c reductase. Cysteine and other thiol compounds can reverse the spectral alternation caused by DBMIB. This reversal probably results from the reduction of DBMIB.
Collapse
|
34
|
Yang FD, Yu L, Yu CA, Lorence RM, Gennis RB. Use of an azido-ubiquinone derivative to identify subunit I as the ubiquinol binding site of the cytochrome d terminal oxidase complex of Escherichia coli. J Biol Chem 1986; 261:14987-90. [PMID: 3533929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The radiolabeled, photoreactive azido-ubiquinone derivative (azido-Q), 3-azido-2-methyl-5-methoxy-6-(3,7-dimethyl-[3H]octyl)- 1,4-benzoquinone, was used to investigate the active site of ubiquinol oxidase activity of the cytochrome d complex, a two-subunit terminal oxidase of Escherichia coli. The azido-Q, when reduced by dithioerythritol, was shown to support enzymatic oxygen consumption by the cytochrome d complex that was 8% of the rate observed with ubiquinol-1. This observation provided the rationale behind further studies of the possible photoinactivation and labeling of the active site by this azido-Q. Ten min of photolysis of the purified cytochrome d complex in the presence of the azido-Q resulted in a 60% loss of the ubiquinol-1 oxidase activity. Uptake of the radiolabeled azido-Q by the cytochrome d complex was correlated to the photoinactivation of the ubiquinol-1 oxidase activity. Both increased linearly during the first 4 min of photolysis and reached 90% of the maximum within 10 min. Photolysis times longer than 10 min resulted in no increase in the maximum of 2 mol of azido-Q incorporated per mol of enzyme. The rate of azido-Q uptake by subunit I, but not subunit II, correlated well with the rate of loss of ubiquinol oxidase activity. Use of ubiquinol-0, which is not oxidized by the enzyme, to competitively inhibit radiolabeling of nonspecific binding sites, resulted in a significant decrease (42%) of azido-Q labeling of subunit II while it did not affect the labeling of subunit I. After photolysis for 4 min, the ratio of radiolabeled azido-Q in subunits I to II of the complex was 4.3 to 1.0. These observations support the conclusion that the ubiquinol substrate binding site is located on subunit I of the cytochrome d complex.
Collapse
|
35
|
Yu L, Yang FD, Yu CA, Tsai AL, Palmer G. Identification of ubiquinone-binding proteins in yeast mitochondrial ubiquinol-cytochrome c reductase using an azido-ubiquinone derivative. Biochim Biophys Acta 1986; 848:305-11. [PMID: 3004577 DOI: 10.1016/0005-2728(86)90204-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An azido-ubiquinone derivative, 3-azido-2-methyl-5-methoxy-6-(3,7-dimethyloctyl)-1,4-benzoquinone, was used to study the ubiquinone-protein interaction and to identify the ubiquinone-binding proteins in yeast mitochondrial ubiquinone-cytochrome c reductase. The phospholipids and Q6 in purified reductase were removed by repeated ammonium sulfate precipitation in the presence of 0.5% sodium cholate. The resulting phospholipid- and ubiquinone-depleted reductase shows no enzymatic activity; activity can be completely restored by the addition of phospholipids and Q6 or Q2. The ubiquinone- and phospholipid-replenished ubiquinonol-cytochrome c reductase is also fully active upon reconstituting with bovine succinate-ubiquinone reductase to form succinate-cytochrome c reductase. When an azido-ubiquinone derivative was added to the ubiquinone and phospholipid-depleted reductase in the dark, followed by the addition of phospholipids, partial reconstitutive activity was restored, while full ubiquinol-cytochrome c reductase activity was observed when Q2H2 was used as substrate in the assay mixture. Apparently, the large amount of Q2H2 present in the assay mixture displaces the azido-ubiquinone in the system. Photolysis of the azido-Q-treated reductase with long-wavelength ultraviolet light abolishes about 70% of both the restored reconstitutive activity and Q2H2-cytochrome c reductase activity. The activity loss is directly proportional to the covalent binding of [3H]azido-ubiquinone to the reductase protein. When the photolyzed, [3H]azido-ubiquinone-treated sample was subjected to SDS-polyacrylamide gel electrophoresis followed by analysis of the distribution of radioactivity among the subunits, the cytochrome b protein and a protein with an apparent molecular weight of 14 000 were heavily labeled. The amount of radioactive labeling in both these proteins was affected by the presence of phospholipids.
Collapse
|
36
|
Yu L, Yang FD, Yu CA. Interaction and identification of ubiquinone-binding proteins in ubiquinol-cytochrome c reductase by azido-ubiquinone derivatives. J Biol Chem 1985; 260:963-73. [PMID: 2981854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Various azido-ubiquinone derivatives were synthesized and characterized. 3-Azido-2-methyl-5-methoxy-6-(3,7-dimethyloctyl)-1,4-benzoquinone was found to be suitable for the study of specific interaction between ubiquinone (Q) and protein. It was synthesized with high specific radioactivity and used to identify the Q-binding proteins in purified ubiquinol-cytochrome c reductase. This azido-Q derivative showed partial efficiency in restoring activity to the Q- and phospholipids-depleted ubiquinol-cytochrome c reductase in the absence of light. Azido-Q derivative treated samples, however, became completely inactivated upon photolysis, and the inactivation was not reversed by addition of Q derivatives. The redox state of the azido-Q derivative has little effect on the Q-binding affinity. Two protein subunits with Mr = 37,000 and 17,000 were found to be heavily labeled when depleted ubiquinol-cytochrome c reductase was treated with [3H] azido-Q derivative followed by photolysis and sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The amount of radioactive labeling of the Mr = 17,000 protein was proportional to the degree of inactivation and affected by the presence of phospholipids. The radioactive labeling of the Mr = 37,000 protein subunit, however, showed no correlation with degree of inactivation and was not affected by phospholipids. Since the radiolabeling at the Mr = 17,000 protein subunit was affected by phospholipids and correlated with the enzymatic activity, this subunit is probably the Q-binding protein in this enzyme complex (QPc). The inhibition of enzymatic activity by n-heptyl-4-hydroxyquinoline-N-oxide was easily reversed by addition of the azido-Q derivative. The distribution of radioactivity among the subunits of ubiquinol-cytochrome c reductase was not affected by the presence of antimycin A, 5-n-undecyl-6-hydroxy-4,7-dioxobenzothiazole or n-heptyl-4-hydroxyquinoline-N-oxide, suggesting that the binding site(s) of these inhibitors are not the Q-binding site.
Collapse
|
37
|
Yu L, Yang FD, Yu CA. Interaction and identification of ubiquinone-binding proteins in ubiquinol-cytochrome c reductase by azido-ubiquinone derivatives. J Biol Chem 1985. [DOI: 10.1016/s0021-9258(20)71194-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|