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Li KQ, Bai X, Ke AT, Ding SQ, Zhang CD, Dai DQ. Ubiquitin-specific proteases: From biological functions to potential therapeutic applications in gastric cancer. Biomed Pharmacother 2024; 173:116323. [PMID: 38401523 DOI: 10.1016/j.biopha.2024.116323] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/17/2024] [Accepted: 02/19/2024] [Indexed: 02/26/2024] Open
Abstract
Deubiquitination, a post-translational modification regulated by deubiquitinases, is essential for cancer initiation and progression. Ubiquitin-specific proteases (USPs) are essential elements of the deubiquitinase family, and are overexpressed in gastric cancer (GC). Through the regulation of several signaling pathways, such as Wnt/β-Catenin and nuclear factor-κB signaling, and the promotion of the expression of deubiquitination- and stabilization-associated proteins, USPs promote the proliferation, metastasis, invasion, and epithelial-mesenchymal transition of GC. In addition, the expression of USPs is closely related to clinicopathological features, patient prognosis, and chemotherapy resistance. USPs therefore could be used as prognostic biomarkers. USP targeting small molecule inhibitors have demonstrated strong anticancer activity. However, they have not yet been tested in the clinic. This article provides an overview of the latest fundamental research on USPs in GC, aiming to enhance the understanding of how USPs contribute to GC progression, and identifying possible targets for GC treatment to improve patient survival.
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Affiliation(s)
- Kai-Qiang Li
- Department of Surgical Oncology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110032, China
| | - Xiao Bai
- Department of Surgical Oncology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110032, China
| | - Ang-Ting Ke
- Department of Surgical Oncology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110032, China
| | - Si-Qi Ding
- Department of Surgical Oncology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110032, China
| | - Chun-Dong Zhang
- Department of Surgical Oncology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110032, China
| | - Dong-Qiu Dai
- Department of Surgical Oncology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110032, China; Cancer Center, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province 110032, China.
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Ding SQ. [Integrative medicine for fecal incontinence: reflections on eastern and western experiences]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:1122-1125. [PMID: 38110272 DOI: 10.3760/cma.j.cn441530-20231010-00123] [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: 12/20/2023]
Abstract
Fecal incontinence has emerged as a global health concern. This article explores an integrative medical model for fecal incontinence by illustrating its conceptual framework and scope, drawing from multidisciplinary consensus and guidelines developed over the past three decades, both internationally and through personal reflection. This integrative medical model is patient-centered, emphasizes the patient's role in treatment decision-making, and recognizes the value of patient-reported outcomes measure. The incorporation of multidisciplinary assessment tools such as the IMPACT scale promises to enhance the standards of clinical practice and research. Furthermore, learning from international guidelines provides insights into interdisciplinary forces, including acupuncture, to formulate consensus guidelines that align with the unique healthcare landscape in China.
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Affiliation(s)
- S Q Ding
- Department of Acupuncture and Traditional Chinese Medicine, Northwestern Health Science University, Minnesota 55431, USA
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Ding SQ, Zhang XP, Pei JP, Bai X, Ma JJ, Zhang CD, Dai DQ. Role of N6-methyladenosine RNA modification in gastric cancer. Cell Death Discov 2023; 9:241. [PMID: 37443100 DOI: 10.1038/s41420-023-01485-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 06/02/2023] [Accepted: 06/14/2023] [Indexed: 07/15/2023] Open
Abstract
N6-methyladenosine (m6A) RNA methylation is the most prevalent internal modification of mammalian messenger RNA. The m6A modification affects multiple aspects of RNA metabolism, including processing, splicing, export, stability, and translation through the reversible regulation of methyltransferases (Writers), demethylases (Erasers), and recognition binding proteins (Readers). Accumulating evidence indicates that altered m6A levels are associated with a variety of human cancers. Recently, dysregulation of m6A methylation was shown to be involved in the occurrence and development of gastric cancer (GC) through various pathways. Thus, elucidating the relationship between m6A and the pathogenesis of GC has important clinical implications for the diagnosis, treatment, and prognosis of GC patients. In this review, we evaluate the potential role and clinical significance of m6A-related proteins which function in GC in an m6A-dependent manner. We discuss current issues regarding m6A-targeted inhibition of GC, explore new methods for GC diagnosis and prognosis, consider new targets for GC treatment, and provide a reasonable outlook for the future of GC research.
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Affiliation(s)
- Si-Qi Ding
- Department of Gastrointestinal Surgery, The Fourth Affiliated Hospital of China Medical University, 110032, Shenyang, China
| | - Xue-Ping Zhang
- Department of Gastrointestinal Surgery, The Fourth Affiliated Hospital of China Medical University, 110032, Shenyang, China
| | - Jun-Peng Pei
- Department of Gastrointestinal Surgery, The Fourth Affiliated Hospital of China Medical University, 110032, Shenyang, China
| | - Xiao Bai
- Department of Gastrointestinal Surgery, The Fourth Affiliated Hospital of China Medical University, 110032, Shenyang, China
| | - Jin-Jie Ma
- Department of Gastrointestinal Surgery, The Fourth Affiliated Hospital of China Medical University, 110032, Shenyang, China
| | - Chun-Dong Zhang
- Department of Gastrointestinal Surgery, The Fourth Affiliated Hospital of China Medical University, 110032, Shenyang, China
| | - Dong-Qiu Dai
- Department of Gastrointestinal Surgery, The Fourth Affiliated Hospital of China Medical University, 110032, Shenyang, China.
- Cancer Center, The Fourth Affiliated Hospital of China Medical University, 110032, Shenyang, China.
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Bai X, Ding SQ, Zhang XP, Han MH, Dai DQ. Exposure to Commonly Used Drugs and the Risk of Gastric Cancer: An Umbrella Review of Meta-Analyses. Cancers (Basel) 2023; 15:cancers15020372. [PMID: 36672322 PMCID: PMC9856677 DOI: 10.3390/cancers15020372] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/02/2023] [Accepted: 01/05/2023] [Indexed: 01/09/2023] Open
Abstract
Recently, attention has been paid to some medications and gastric cancer (GC) risk. This review aimed to evaluate associations between commonly used drugs and GC risk and to grade evidence from published systematic reviews and meta-analyses. This umbrella review was registered in PROSPERO (CRD42022320276). The systematic reviews and meta-analyses of observational studies were retrieved by searching Embase, PubMed, and Web of Science. The evidence strength of commonly used drugs and GC risk was categorized into four grades: weak, suggestive, highly suggestive, and strong. Of 19 associations between commonly used drugs and GC risk and its subtypes, none was supported by convincing or highly suggestive evidence. The risk of GC related to non-steroidal anti-inflammatory drugs (NSAIDs), non-aspirin NSAIDs, and acid-suppressive drugs, as well as the risk of non-cardia GC related to NSAIDs and aspirin, was supported by suggestive evidence. The results showed that a reduced GC risk was associated with two drug types (NSAIDs and non-aspirin NSAIDs), and an increased GC risk was associated with acid-suppressing drugs at the suggestive evidence level. Moreover, NSAIDs and aspirin reduced non-cardia GC risk as supported by suggestive evidence. However, the evidence supporting statins or metformin in reducing GC risk was weak, and thus future studies are required to clarify these associations.
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Affiliation(s)
- Xiao Bai
- Department of Gastrointestinal Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, China
| | - Si-Qi Ding
- Department of Gastrointestinal Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, China
| | - Xue-Ping Zhang
- Department of Gastrointestinal Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, China
| | - Ming-Hao Han
- Department of Gastrointestinal Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, China
| | - Dong-Qiu Dai
- Department of Gastrointestinal Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, China
- Cancer Center, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, China
- Correspondence: ; Tel.: +86-24-6204-3110
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Shen ZY, Wang F, Ding SQ, Tan GL. [Research status in complex decongestion therapy for lymphedema in head and neck cancer]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 55:558-561. [PMID: 32842378 DOI: 10.3760/cma.j.cn115330-20190904-00557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Z Y Shen
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Xiangya Hospital, Central South University, Changsha 410013, China; Nursing Department, the Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - F Wang
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - S Q Ding
- Nursing Department, the Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - G L Tan
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Xiangya Hospital, Central South University, Changsha 410013, China
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Shen ZY, Ding SQ, Wang F. [Research status on the tools for assessing lymphedema in patients with head and neck cancer]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 55:421-426. [PMID: 32306647 DOI: 10.3760/cma.j.cn115330-20190816-00512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Z Y Shen
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Xiangya Hospital of Central South University, Changsha 410013, China; Nursing Department, the Third Xiangya Hospital of Central South University, Changsha 410013, China
| | - S Q Ding
- Nursing Department, the Third Xiangya Hospital of Central South University, Changsha 410013, China
| | - F Wang
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Xiangya Hospital of Central South University, Changsha 410013, China
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Xia NG, Lin JH, Ding SQ, Dong FR, Shen JZ, Du YR, Wang XS, Chen YY, Zhu ZG, Zheng RY, Xu HQ. Reliability and validity of the Chinese version of the Patient Health Questionnaire 9 (C-PHQ-9) in patients with epilepsy. Epilepsy Behav 2019; 95:65-69. [PMID: 31026785 DOI: 10.1016/j.yebeh.2019.03.049] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [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: 02/01/2019] [Revised: 03/21/2019] [Accepted: 03/27/2019] [Indexed: 10/27/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate the clinical reliability and validity of the Chinese version of the Patient Health Questionnaire 9 (C-PHQ-9) in patients with epilepsy. METHODS A total of 213 consecutive adult patients with epilepsy were evaluated. Receiver operating characteristic (ROC) analysis was performed using C-PHQ-9 and Chinese version of Patient Health Questionnaire 2 (C-PHQ-2) as predictors and the Mini International Neuropsychiatric Interview Plus Version 5.0.0 as the gold standard. RESULTS The C-PHQ-9 was easily understood and quickly finished by the patients. According to the gold standard, the prevalence of current major depressive disorder in this population was 16.4%. Cronbach's α coefficient for the C-PHQ-9 was 0.860. The ROC analysis showed an area under the curve (AUC) of 0.888 (95% confidence interval [CI] = 0.838-0.927). At a cutoff score of >6, the C-PHQ-9 had a sensitivity of 82.86%, a specificity of 84.27%, a positive predictive value of 50.9%, and a negative predictive value of 96.2%. The C-PHQ-2 at a cutoff score of >1 resulted in the greatest balance of sensitivity and specificity (77.14% and 75.28%, respectively). CONCLUSION Our findings support a high reliability and validity for the C-PHQ-9 as a screening tool for the detection of current major depression in Chinese patients with epilepsy.
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Affiliation(s)
- Nian-Ge Xia
- Department of Neurology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Jia-He Lin
- Department of Neurology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Si-Qi Ding
- Department of Neurology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Fei-Rong Dong
- Department of Psychiatry, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Jing-Zan Shen
- Department of Neurology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Yan-Ru Du
- Department of Neurology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Xin-Shi Wang
- Department of Neurology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Yan-Yan Chen
- Department of Neurology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Zhen-Guo Zhu
- Department of Neurology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Rong-Yuan Zheng
- Department of Neurology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
| | - Hui-Qin Xu
- Department of Neurology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China.
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Xue YY, Ding YJ, Jiang B, Ding SQ. [Morphological characteristic of anal canal in patients with dyssynergic defecation and its correlation with anorectal manometry]. Zhonghua Wei Chang Wai Ke Za Zhi 2019; 22:457-463. [PMID: 31104432 DOI: 10.3760/cma.j.issn.1671-0274.2019.05.012] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the diagnostic value of three-dimensional endoanal ultrasound (3D-EAUS) for dyssynergic defecation (DD). Methods: A case-control study was performed to retrospectively collectclinical data of 46 DD patients, including 16 males and 30 females with median age of 51 (20 to 70) years, at Nanjing Hospital of Chinese Medicine from February 2012 to April 2015.All the patients met the diagnostic criteria of functional constipation of Rome III. The paradoxical contraction of puborectalis (PR) muscle was found by both rectal examination and anorectal manometry. In the same period,45 healthy volunteers, including 22 males and 23 females with median age of 48 (21 to 72) years, without pelvic operation history, and with normal defecation in recent 6 months, were enrolled as the control group. No significant differences were observed in age and gender between two groups (both P>0.05). Cleveland constipation score of DD group was higher than that of control group [15(8-24) vs. 5(1-9), t=15.720, P<0.001]. 3D-EAUS examination was performed in all the subjects. Thickness and length of internal anal sphincter (IAS) (anterior side and posterior side), thickness of PR muscle, length of external anal sphincter (EAS) plus PR muscle, and puborectalis angle were measured and compared by using student t test between two groups. Correlation between these ultrasound parameters and anorectal manometry was examined by Pearson correlation analysis. Results: Both male and female in the DD group had the greater thickness of IAS, as compared to those in the control group [male: (1.7±0.5) mm vs.(1.5±0.2) mm, t=2.516, P=0.016; female: (1.9±0.4) mm vs.(1.6±0.5) mm, t=2.034,P=0.047]. No significant differences between the two groups were observed with respect to the posterior length of IAS, length of EAS plus PR muscle, and thickness of PR muscle (all P>0.05). Compared to the control group, male in the DD group had smaller puborectalis angle during straining [(87.0±3.6)° vs. (90.5±1.8)°,t=3.502,P=0.002];female in the DD group had smaller puborectalis angle both in resting and straining [resting:(86.5±3.8)° vs. (90.1±2.1)°,t=4.047, P<0.001;straining: (84.1±4.5)° vs. (90.2±2.3)°, t=5.938, P<0.001]. Correlation analysis showed that anterior length of IAS was positively correlated with anal resting pressure (r=0.321, P=0.030); the length of EAS plus PR muscle was positively correlated with anal squeeze pressure (r=0.415, P=0.004). There were no correlations between the thickness and the posterior length of IAS and the anal resting pressure, or between the thickness of PR muscle and the anal squeeze pressure (all P>0.05). Conclusions: The 3D-EAUS can accurately assess the morphological features of anal canal in DD patients. There is a certain positive correlation between 3D-EAUS and anorectal manometry.
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Affiliation(s)
- Y Y Xue
- The National Chinese Medicine Center of Colorectal Disease, Department of Anorectal Surgery, Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing 210001, China
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Du YR, Lin JH, Mei PN, Wang L, Wang Y, Shen JZ, Ding SQ, Ye MQ, Wang XS, Xia NG, Zheng RY, Chen H, Hou ST, Xu HQ. Analysis of risk factors for antiepileptic drug-induced adverse psychotropic effects in Chinese outpatients with epilepsy. J Clin Neurosci 2019; 63:37-42. [PMID: 30827884 DOI: 10.1016/j.jocn.2019.02.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 10/06/2018] [Revised: 01/10/2019] [Accepted: 02/20/2019] [Indexed: 11/19/2022]
Abstract
Antiepileptic drugs (AEDs) have adverse psychotropic effects (APEs). To explore the risk factors for AED-induced APEs, we compared Chinese outpatients with epilepsy with and without AED-induced APEs. We reviewed the medical data of outpatients with epilepsy enrolled in the Epilepsy Long-term Follow Up Registry Study (ELFURS) between January 1, 2003 and December 31, 2015. Data on demographics, comorbidities, variables related to epilepsy, AED use, and APEs were collected. APEs were determined by experienced epileptologists based on the definition of "adverse drug reaction (ADR)" proposed by the World Health Organization (WHO) in 1972, and the causality relationship between APEs and suspected medications was assessed based on the WHO-UMC scale. APEs included effects on memory, sleep, behavior, mood, psychotic symptoms, and others in this study. We divided the study population into patients with and without AED-induced APEs and then compared the differences between the two groups using univariate and multivariate methods. A total of 3074 eligible patients were included in this study (1001 patients with AED-induced APEs and 2073 patients without AED-induced APEs). Of all APEs, the effects on memory and sleep were most pronounced. The results show that the female sex (odds ratio [OR] 1.242, 95% confidence interval [CI] 1.055-1.463), psychotic disorder comorbidities (OR 1.815, 95% CI 1.159-2.841), polytherapy with AEDs (OR 1.400, 95% CI 1.061-1.847), and the duration of epilepsy (OR 1.010, 95% CI 1.000-1.020) are significant nondrug risk factors for AED-induced APEs. Recognizing risk factors for APEs may help determine optimal treatment strategies for epilepsy.
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Affiliation(s)
- Yan-Ru Du
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jia-He Lin
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Pei-Na Mei
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Li Wang
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yi Wang
- Department of Preventive Medicine, School of Public Health and Management, Wenzhou Medical University, Wenzhou, China
| | - Jing-Zan Shen
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Si-Qi Ding
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Meng-Qian Ye
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xin-Shi Wang
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Nian-Ge Xia
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Rong-Yuan Zheng
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hong Chen
- Department of Psychiatry, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Sheng-Tao Hou
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hui-Qin Xu
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
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Chen YB, Hou J, Fu WJ, Ding SQ, Wang DX, Yuan ZG, Kong XT. [Mechanism of arsenic trioxide-induced cytotoxicity on multiple myeloma cells]. Ai Zheng 2003; 22:1276-9. [PMID: 14693051] [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: 04/27/2023]
Abstract
BACKGROUND & OBJECTIVE Multiple myeloma (MM), a plasma cell tumor, is difficult to cure by now. Previous study showed that As2O3 could inhibit the proliferation and induce the apoptosis of myeloma cell in vitro. The aim of this study was to explore the possible mechanism of arsenic trioxide (As2O3) on multiple myeloma cells. METHODS The cytotoxic effects of As2O3 on five myeloma cell lines U266, SKO-007, LP-1, HS-Sultan, and KM3 were examined using MTT bioassay, and the concentration of 50% growth inhibition (IC(50)) was calculated. The synergistic or antagonistic effects of menadione (VK(3)), N-acetyl-cysteine (NAC), and reduced glutathione (GSH) combined with As2O3 were also examined. The cellular GSH levels in five MM cell lines and its changes in U266 cells after treated with As2O3, VK(3), NAC, and exogenous GSH were determined by colorimetric assay, and the relationship between IC(50) and cellular GSH levels was analyzed. RESULTS As2O3 inhibited the proliferation of all five myeloma cells, but with different sensitivity. GSH contents in five MM cells were correlated with its IC(50) significantly (r=0.87,P< 0.05). Oxidant VK(3) had significant synergistic effect with As2O3, and antioxidants NAC and GSH partly blocked the growth inhibition of As2O3. Both As2O3 and VK(3) decreased the GSH contents, NAC and GSH increased them contrarily. CONCLUSION One of the mechanisms of effect of As2O3 on myeloma cells may be through decreasing the cellular GSH levels and inducing myeloma cell apoptosis.
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Affiliation(s)
- Yu-Bao Chen
- Department of Hematology, Changzheng Hospital, The Second Military Medical University, Shanghai, PR China.
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Lin FY, Hou J, Tan LY, Ding SQ, Wang H, Wang DX. [Real-time quantitative PCR detecting minimal residual disease in multiple myeloma patients after autologous peripheral blood stem cell transplantation]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2003; 11:516-20. [PMID: 14575549] [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: 04/27/2023]
Abstract
In order to explore the role of real-time PCR in detecting minimal residual disease in multiple myeloma and Waldenstrom's macroglobulinemia after autologous peripheral blood stem cell transplantation (APBSCT), real-time PCR was used to quantitate the IgH rearrangement in 8 patients with multiple myeloma (MM) and 1 case of Waldenstrom's macroglobulinemia before and after APBSCT. The results showed that the copies of IgH rearrangement pre- or post-APBSCT were 3108 +/- 1043 and 549 +/- 660 (P < 0.05) respectively. The number of IgH copies was positively correlated with the amount of plasmocytes in patient 's bone marrow and the M-protein in peripheral blood (r = 0.86, P < 0.05). Similar result was obtained in a case of relapsed Waldenstrom's macroglobulinemia. In conclusion, the quantitative analysis of IgH rearrangement by real-time PCR is a novel way to evaluate the therapeutic efficaciousness and predict the prognoses in MM patients.
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Affiliation(s)
- Fa-Ying Lin
- Department of Hematology, Changzheng Hospital, The Second Military Medical University, Shanghai 200003, China.
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Jiang H, Hou J, Fu WJ, Ding SQ, Zhang B. [Establishment of a human CD30+ anaplastic large cell lymphoma cell line and its biological characteristics]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2003; 11:490-4. [PMID: 14575543] [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: 04/27/2023]
Abstract
A CD30+ anaplastic large cell lymphoma (ALCL) cell line was established from the mononuclear cells isolated from pleural effusion of a patient with non-Hodgkin's lymphoma. The cell line's biological characteristics were analyzed. The results showed that the established cell line could survive and proliferate in RPIM 1640 medium; the Wright-Giemsa-stained cells were exactly similar to malignant cells of CD30+ ALCL in morphology, with many diffuse virus granules in cytoplasm; the cytochemical staining of the cells showed the following reactivity pattern: positive for acid phosphatase (ACP) and periodic acid-Schiff (PAS), negative for peroxidase (POX), myeloperoxidase (MPO) and platelet peroxidase (PPO). The immunoprofile of the cells was positive for CD45, HLA-DR, CD30 and negative for EMA, CD34, CD38, CD2, CD3, CD4, CD7, CD8, CD10, CD15, CD19 and CD20. The cytogenetic analysis showed complicate d qualitative and quantitative abnormality of chromosomes, without typical t(2;5). It is concluded that the established cell line is CD30+ anaplastic large cell lymphoma cell line.
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Affiliation(s)
- Hua Jiang
- Department of Hematology, Changzheng Hospital, The Second Military Medical University, Shanghai 200003, China
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Abstract
Remarkable differences were observed in antigen frequencies (AF), gene frequencies (GF) and haplotype frequencies (HF) when 2441 healthy Chinese individuals representing nine different ethnic groups and living in 14 different geographic locations were examined for the genetic distribution of the various HLA Class I and II markers. A sizable number of individuals of each ethnic group within each of the three major categories of the Chinese population, namely, Hans, Mongols, and Southern minorities, have been studied here, providing useful population statistics for applications such as determination of probabilities of paternity, comparisons for HLA and disease associations, and anthropologic studies.
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Affiliation(s)
- T D Lee
- American Red Cross Blood Services, Rockville, MD
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