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Shang LM, Chen HJ, Liu Y, Cao Y, Li F, Guo YT, Dong WM, Lin Y, Gu WY. [Survival and Prognosis of Patients with Acute Myeloid Leukemia with Myelodysplasia-Related Changes Transformed from Myelodysplastic Syndrome]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2024; 32:347-354. [PMID: 38660835 DOI: 10.19746/j.cnki.issn.1009-2137.2024.02.004] [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] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
OBJECTIVE To explore the risk factors affecting the survival and efficacy of patients with acute myeloid leukemia with myelodysplasia-related changes (AML-MRC) transformed from myelodysplastic syndrome (MDS). METHODS The clinical data of 60 patients with AML-MRC transformed from MDS who hospitalized in The Third Affiliated Hospital of Soochow University from January 2010 to December 2021 were retrospectively analyzed. The demographic data and laboratory parameters, cytogenetic karyotypes, target genes of AML detected by next generation sequence, risk stratification, treatment regimen, therapeutic efficacy and survival outcome were documented. Rank sum test and Chi-square test or Fisher exact test were used to compare the survival and efficacy. The effects of clinical parameters, risk stratification and treatment regimens on the survival and efficacy of the AML-MRC patients were analyzed by univariate and multivariate analysis. RESULTS The median overall survival (OS) of the AML-MRC patients was 4.5 months, the 1-year OS rate was 28.3%, and the complete remission (CR) rate after treatment was 33.3%. The univariate analysis showed that age≥60 years, leukocytosis, severe thrombocytopenia, poor-risk group and only accepted hypomethylating agents(HMAs) or supportive therapy were the risk factors affecting OS. COX multivariate analysis showed that thrombocytopenia ( HR=4.46), HMAs therapy (compared to transplantation, HR=10.47), supportive therapy (compared to transplantation, HR=25.80) and poor-risk group (compared to medium-risk group, HR=13.86) were independent hazard factors for median OS of patients with AML-MRC. The univariate analysis showed that the risk factors affecting 1-year OS in patients with AML-MRC were age≥60 years, thrombocytopenia, time of transformation from MDS to AML (TTA)≥3 months, fibrinogen-albumin ratio index (FARI)≥0.07, CONUT score≥5, poor-risk group and supportive therapy. Binary logistic regression analysis showed that the independent risk factors for 1-year OS in AML-MRC patients were age≥60 years ( HR=11.23), thrombocytopenia ( HR=8.71), FARI≥0.07 ( HR=5.19) and poor-risk group ( HR=14.00). The risk factors affecting CR of AML-MRC patients in univariate analysis were age≥60 years, thrombocytopenia, FARI≥0.1, CONUT score≥5, poor-risk group and supportive therapy, while binary logistic regression analysis showed that age≥60 years( HR=7.35), CONUT score≥5 ( HR=9.60), thrombocytopenia ( HR=12.05) and poor-risk group ( HR=32.5) were independent risk factors affecting CR of the patients. CONCLUSION The OS of AML-MRC patients is poor, old age(≥60 years old), supportive therapy, HMA therapy, poor-risk, thrombocytopenia, FARI≥0.07 and CONUT score≥5 may be associated with poor prognosis.
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Affiliation(s)
- Li-Mei Shang
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Hui-Juan Chen
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Yue Liu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Yang Cao
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Feng Li
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Yan-Ting Guo
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Wei-Min Dong
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Yan Lin
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Wei-Ying Gu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China.E-mail:
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Shen ZY, Chen XC, Shan HR, Jia T, Gu WY, Wang F, Teng QL, Wang L, Wang CL, Shi YY, Zhang H, Miao YQ, Zhu TG, Ji CY, Ye JJ, Zhang MZ, Zhang XD, Wang L, Xu KL, Sang W. [Analysis of prognostic factors of extranodal NK/T-cell lymphoma treated with pegaspargase/L-asparaginase: a multicenter retrospective study]. Zhonghua Xue Ye Xue Za Zhi 2023; 44:642-648. [PMID: 37803837 PMCID: PMC10520233 DOI: 10.3760/cma.j.issn.0253-2727.2023.08.005] [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] [Grants] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Indexed: 10/08/2023]
Abstract
Objective: To explore the prognostic factors of extracellular NK/T cell lymphoma (ENKTL) treated with pegaspargase/L-asparaginase. Methods: The clinical data of 656 ENKTL patients diagnosed at 11 medical centers in the Huaihai Lymphoma Working Group from March 2014 to April 2021 were retrospectively analyzed. The patients were randomly divided into two groups: a training set (460 cases) and a validation set (196 cases) at 7∶3, and the prognostic factors of the patients were analyzed. A prognostic scoring system was established, and the predictive performance of different models was compared. Results: Patients' median age was 46 (34, 57) years, with 456 males (69.5% ) and 561 nasal involvement (85.5% ). 203 patients (30.9% ) received a chemotherapy regimen based on L-asparaginase combined with anthracyclines, and the 5-year overall survival rate of patients treated with P-GEMOX regimen (pegaspargase+gemcitabine+oxaliplatin) was better than those treated with SMILE regimen (methotrexate+dexamethasone+cyclophosphamide+L-asparaginase+etoposide) (85.9% vs 63.8% ; P=0.004). The results of multivariate analysis showed that gender, CA stage, the Eastern Cooperative Oncology Group performance status (ECOG PS) score, HGB, and EB virus DNA were independent influencing factors for the prognosis of ENKTL patients (P<0.05). In this study, the predictive performance of the prognostic factors is superior to the international prognostic index, Korean prognostic index, and prognostic index of natural killer lymphoma. Conclusion: Gender, CA stage, ECOG PS score, HGB, and EB virus DNA are prognostic factors for ENKTL patients treated with pegaspargase/L-asparaginase.
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Affiliation(s)
- Z Y Shen
- Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei 230032, China
| | - X C Chen
- Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
| | - H R Shan
- Department of Hematology, Shuyang Hospital of Traditional Chinese Medicine, Suqian 223600, China
| | - T Jia
- Department of Hematology, the First People's Hospital of Lianyungang, Lianyungang 222002, China
| | - W Y Gu
- Department of Hematology, the First People's Hospital of Changzhou, Changzhou 213003, China
| | - F Wang
- Department of Hematology, the First People's Hospital of Changzhou, Changzhou 213003, China
| | - Q L Teng
- Department of Hematology, Taian Central Hospital, Taian 271000, China
| | - L Wang
- Department of Hematology, Taian Central Hospital, Taian 271000, China
| | - C L Wang
- Department of Hematology, Huai'an First People's Hospital, Huaian 223000, China
| | - Y Y Shi
- Department of Hematology, Huai'an First People's Hospital, Huaian 223000, China
| | - H Zhang
- Department of Hematology, the Affiliated Hospital of Jining Medical University, Jining 272000, China
| | - Y Q Miao
- Department of Hematology, Yancheng First People's Hospital, Yancheng 224001, China
| | - T G Zhu
- Department of Hematology, the General Hospital of Wanbei Coal-Electric Group, Suzhou 234000, China
| | - C Y Ji
- Department of Hematology, Qilu Hospital of Shandong University, Jinan 250012, China
| | - J J Ye
- Department of Hematology, Qilu Hospital of Shandong University, Jinan 250012, China
| | - M Z Zhang
- Department of Hematology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X D Zhang
- Department of Hematology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - L Wang
- Department of Hematology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - K L Xu
- Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
| | - W Sang
- Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
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Xu P, Liu J, Chen HJ, Shang LM, Yan F, Xie XB, Gu WY, Lin Y. [Clinical Characteristics and Prognostic Factors of Patients with Primary Parotid Gland Lymphoma]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2023; 31:1077-1084. [PMID: 37551480 DOI: 10.19746/j.cnki.issn.1009-2137.2023.04.023] [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: 08/09/2023]
Abstract
OBJECTIVE To explore the clinical characteristics and prognostic factors of patients with primary parotid gland lymphoma, and construct a prognostic model nomogram for patients with primary diffuse large B-cell lymphoma (DLBCL) of parotid gland. METHODS Primary parotid gland lymphoma and primary DLBCL of parotid gland patients from 1984 to 2016 were identified from the Surveillance, Epidemiology, and End Results (SEER) database. Univariate and multivariate Cox regression analysis were conducted to determine the independent prognostic factors of primary parotid gland lymphoma and primary DLBCL of parotid gland, respectively. According to the established independent prognostic factors of primary DLBCL of parotid gland, nomogram was built to predict 3- and 5-year survival, and the discrimination and calibration of the model were evaluated by concordance index (C-index) and calibration plots. RESULTS A total of 2 610 patients with primary parotid gland lymphoma were identified. Their median age was 66(15-99) years old, the male to female ratio was 1∶1.8, and 20.5% of them was primary DLBCL of parotid gland, which was the most common histological subtype in aggressive lymphomas. Multivariate Cox regression analysis showed that sex, age, Ann Arbor stage, years of diagnosis, marital status, histological subtype, surgery, and radiation were the independent prognostic factors of primary parotid gland lymphoma, while age, marital status, surgery, and chemotherapy were the independent prognostic factors of primary DLBCL of parotid gland. The C-index of the prediction model was 0.702(95%CI: 0.696-0.768), reflecting a good discrimination ability. The predicted value probability of the calibration plots was close to the actual value probability, reflecting a good accuracy ability. CONCLUSIONS Sex, age, Ann Arbor stage, years of diagnosis, marital status, histological subtype, surgery, and radiation were the independent prognostic factors of primary parotid gland lymphoma. The nomogram survival prediction model for primary DLBCL of parotid gland patients can assist clinical decision effectively.
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Affiliation(s)
- Peng Xu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213000, Jiangsu Province, China
| | - Juan Liu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213000, Jiangsu Province, China
| | - Hui-Juan Chen
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213000, Jiangsu Province, China
| | - Li-Mei Shang
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213000, Jiangsu Province, China
| | - Feng Yan
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213000, Jiangsu Province, China
| | - Xiao-Bao Xie
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213000, Jiangsu Province, China
| | - Wei-Ying Gu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213000, Jiangsu Province, China
| | - Yan Lin
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213000, Jiangsu Province, China,E-mail:
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Zhang H, Xiang W, Ji ST, Xiao YP, Chen XC, Li J, Ning Y, Gu WY. [Clinicopathological analysis of primary gastric (gastrointestinal)-type mucoglandular lesion of endometrium]. Zhonghua Bing Li Xue Za Zhi 2023; 52:586-591. [PMID: 37263923 DOI: 10.3760/cma.j.cn112151-20220905-00763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Objective: To investigate the clinical and pathological features of primary gastric (gastrointestinal)-type mucoglandular lesions of the endometrium. Methods: Eight cases of primary gastric (gastrointestinal)-type mucoglandular lesions of endometrium diagnosed between 2014 to 2022 were retrieved from pathology archives of the Obstetrics and Gynecology Hospital Affiliated to Fudan University, Shanghai, China. The clinical history, pathological sections and follow-ups were analyzed. Results: The eight patients ranged in age from 35 to 67 years, with an average age of 55.5 years. Seven patients were examined for high-risk human papillary virus (HPV) before operation. Only one of them was positive for high-risk HPV52. No cervical mucinous lesions were found in any of the patients. Two cases were invasive gastric (gastrointestinal)-type adenocarcinoma, 2 cases were benign gastric (gastrointestinal)-type mucinous metaplasia, and the other 4 cases were atypical gastric (gastrointestinal)-type mucinous gland hyperplasia. Microscopically, tumor cells showed mucous epithelium with gastrointestinal differentiation. Immunophenotyping showed that MUC6 was diffusely or focally positive in 5 cases, CK20 and CDX2 were positive in 3 cases. And p16 was negative or focally positive in 5 cases and strongly positive in 1 case. ER was expressed in both benign and atypical lesions, and weakly positive or negative in the invasive adenocarcinoma. p53 showed mutant expression in one case and wild-type expression in the rest. HPV in situ hybridization was negative. Conclusions: Primary gastric (gastrointestinal)-type mucoglandular lesions of the endometrium show various forms of gastrointestinal differentiation, which are high-risk HPV independent. Morphology combined with immunohistochemistry is helpful for the diagnosis, which can only be made on exclusion of cervical gastrointestinal glandular lesion, gastrointestinal metastatic carcinoma and the mucinous subtype of endometrioid carcinoma.
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Affiliation(s)
- H Zhang
- Department of Pathology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - W Xiang
- Department of Pathology, Punan hospital, Pudong New Area, Shanghai 200125, China
| | - S T Ji
- Department of Pathology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - Y P Xiao
- Department of Pathology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - X C Chen
- Department of Pathology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - J Li
- Department of Pathology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - Y Ning
- Department of Pathology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - W Y Gu
- Department of Pathology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
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Cao Y, Liu Y, Liu Y, Yue YH, Shang LM, Chen HJ, Yang HN, Gu WY. [Effects of Decitabine Combined with Anlotinib on Proliferation and Apoptosis of Multiple Myeloma Cells]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2023; 31:442-447. [PMID: 37096517 DOI: 10.19746/j.cnki.issn.1009-2137.2023.02.019] [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: 04/26/2023]
Abstract
OBJECTIVE To investigate the biological effects and its relative mechanism of decitabine combined with anlotinib on multiple myeloma cells. METHODS The human MM cell lines and primary cells were treated with different concentrations of decitabine, anlotinib, and decitabine+anlotinib, respectively. The cell viability was detected and combination effect was calculated by CCK-8 assay. The apoptosis rate was measured by flow cytometry and the level of c-Myc protein was determined by Western blot. RESULTS Both decitabine and anlotinib could effectively inhibit the proliferation and induce the apoptosis of MM cell lines NCI-H929 and RPMI-8226. The effect of combined treatment on the inhibition of cell proliferation and induction of apoptosis was stronger than that of single-drug treatment. The combination of the two drugs also showed strong cytotoxicity in primary MM cells. Decitabine and anlotinib could down-regulate the level of c-Myc protein in MM cells and the c-Myc level in the combination group was the lowest. CONCLUSION Decitabine combined with anlotinib can effectively inhibit the proliferation and induce apoptosis of MM cells, which provides a certain experimental basis for the treatment of human MM.
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Affiliation(s)
- Yang Cao
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Yue Liu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Yan Liu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Yan-Hua Yue
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Li-Mei Shang
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Hui-Juan Chen
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Hao-Nan Yang
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Wei-Ying Gu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China .E-mail:
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Xu Y, Dong WM, Lin Y, Guo YT, Liu J, Xu T, Gu WY. [The Clinical Value of Neutrophil CD64 Index in Hematological Malignancies with Pulmonary Infection]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2022; 30:1601-1606. [PMID: 36208273 DOI: 10.19746/j.cnki.issn.1009-2137.2022.05.047] [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] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
OBJECTIVE To investigate the clinical value of neutrophil CD64 index in hematological malignancies with pulmonary infection. METHODS The cohort study method was used to retrospectively analyze the clinical data of 125 patients with hematological malignancies and pulmonary infections who were treated in The Third Affiliated Hospital of Soochow University. All the patients were divided into four stages according to the diagnosis and treatment process: non-infected stage (T1), the symptoms of infection had appeared before using antibiotics (T2), one week after anti-infective treatment (T3), and after stopping antibiotics (T4). CD64 index, C-reactive protein (CRP), blood cell count, and immune cell level were compared before and after infection (T1 vs T2), the correlation between CD64 index and other indicators were explored, the change trends of the significantly different indicators in the course of the disease were observed, and the diagnostic efficacy of CD64 index and CRP were compared. The surviving patients were followed up for whether reinfection occurred within 30 days after discharge, and the re-examination results of indices before discharge (in stage of T4) between reinfected and non-reinfected patients were compared to find the risk factors of reinfection. RESULTS Before and after infection, the CD64 index, CRP, CD14+HLA-DR+, CD4+, and lymphocyte counts were significantly different (all P<0.05). There was a negative correlation of CD64 index with CD14+HLA-DR+ (r=-0.395, P<0.001), a negative correlation with CD3+ (r=-0.1.87, P=0.047), and a negative correlation with lymphocyte count (r=-0.230, P=0.006), while a positive correlation with CRP(r=0.313, P<0.001). The area under the curve of CD64 index, CRP, and CD64 index combined with CRP was 0.790 (95%CI: 0.711-0.868), 0.754(95%CI: 0.667-0.841), and 0.835(95%CI: 0.762-0.907), respectively; the sensitivity was 59.6%, 72.7%, and 74.7%, the specificity was 89.2%, 73.0%, and 78.4%, and the cut-off value was 0.488, 0.457, and 0.531, respectively. There were only two re-examination indexes showed significantly different before discharge between reinfected patients and non-reinfected patients: CD14+HLA-DR+ (F=8.524, P=0.004) and CD64 index (F=9.993, P=0.002). The increase of CD64 index was an independent risk factor for reinfection within 30 days after discharge from the hospital (HR=1.790, 95%CI: 1.343-2.386, P<0.001). CONCLUSION CD64 index has diagnostic value in patients with hematological malignancies and pulmonary infection, and its specificity is higher than that of CRP. The combination of the two indicators can improve the diagnostic sensitivity. CD64 index has a predictive value for reinfection within 30 days after infection treatment.
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Affiliation(s)
- Yin Xu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Wei-Min Dong
- Department of Hematology, The Third Affiliated Hospital of Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Yan Lin
- Department of Hematology, The Third Affiliated Hospital of Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Yan-Ting Guo
- Department of Hematology, The Third Affiliated Hospital of Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Jia Liu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Ting Xu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Wei-Ying Gu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, Changzhou 213003, Jiangsu Province, China E-mail:
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Wang B, Ling Y, Dai L, Gu WY, Zhang XW, Xing SS, Li HQ. [Association of Next Generation Sequencing Based Genotypic Profiling with MICM Characteristics in NPM1 Mutated Acute Myeloid Leukemia]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2022; 30:56-60. [PMID: 35123604 DOI: 10.19746/j.cnki.issn.1009-2137.2022.01.010] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To explain the clinicobiological heterogeneity of NPM1 mutated (NPM1mut) acute myeloid leukemia (AML) by analyzing the association between next-generation sequencing (NGS) profiles and MICM characteristics in patients with this AML subtype. METHODS Data of 238 NPM1mut patients with available NGS information on 112 genes related to blood disease was collected, and χ2 test and nonparametric test were used to analyze the distribution association between NGS-detecting mutations and conventional MICM parameters. RESULTS In entire NPM1mut cohort, totaling 240 NPM1 mutation events were identified, of whom 10 (10/240, 4.2%) were missense mutations, which did not involve any W288 or W290 locus and were found exclusively in NPM1mut/FLT3-ITD- group. All but one of these missense mutations (9/10, 90%) were accompanied by AML subtype-defining recurrent cytogenetic or molecular abnormalities, of which 7 cases were in the low risk and 2 in the high risk. NPM1mut occurred solely as an insertion/deletion (indel) type in the NPM1mut/FLT3-ITD+ group. The incidence of favorable plus unfavorable karyotypes in NPM1mut/FLT3-ITD- group was higher than in NPM1mut/FLT3-ITD+ group (6.4% vs. 0, P=0.031). The positive rates of CD34 and CD7 in NPM1mut/FLT3-ITD+ group were significantly higher than in NPM1mut/FLT3-ITD- group (CD34: 47.9% vs. 20.6%, P<0.001; CD7: 61.5% vs. 29.9%, P<0.001). Logistic analysis showed that FLT3-ITD independently predicted for CD34+ and CD7+ [odds ratio (OR)=5.29, 95%CI: 2.64-10.60, P<0.001; OR=3.47, 95%CI: 1.79-6.73, P<0.001; respectively]. Ras-pathway mutations independently predicted for HLA-DR+ (OR=4.05, 95%CI: 1.70-9.63, P=0.002), and KRAS mutation for MPO- (OR=0.18, 95%CI: 0.05-0.62, P=0.007). TET2/IDH1 mutations independently predicted for CD34- and CD7- (OR=0.26, 95%CI: 0.11-0.62, P=0.002; OR=0.30, 95%CI: 0.14-0.62, P=0.001; respectively), and MPO+ (OR=3.52, 95%CI: 1.48-8.38, P=0.004). DNMT3A-R882 independently predicted for CD7+ and HLA-DR+ (OR=3.59, 95%CI: 1.80-7.16, P<0.001; OR=13.41, 95%CI: 4.56-39.45, P<0.001; respectively), and DNMT3A mutation for MPO-(OR=0.35, 95%CI: 1.48-8.38, P=0.004). CONCLUSION Co-existing FLT3-ITD in NPM1mut AML independently predicts for CD34+ and CD7+, co-existing Ras-pathway mutation for HLA-DR+ and MPO-, co-existing TET2/IDH1 mutation for CD34-, CD7-, and MPO+, and co-existing DNMT3A mutation for HLA-DR+, CD7+, and MPO-, thereby providing a new mechanism explanation for the immunophenotypic heterogeneity of these AML patients.
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Affiliation(s)
- Biao Wang
- Department of Hematology, The Third Affiliated Hospital of Soochow University (The First People's Hospital of Changzhou), Changzhou 213003, Jiangsu Province, China
| | - Yun Ling
- Department of Hematology, The Third Affiliated Hospital of Soochow University (The First People's Hospital of Changzhou), Changzhou 213003, Jiangsu Province, China
| | - Li Dai
- Department of Hematology, The Third Affiliated Hospital of Soochow University (The First People's Hospital of Changzhou), Changzhou 213003, Jiangsu Province, China
| | - Wei-Ying Gu
- Department of Hematology, The Third Affiliated Hospital of Soochow University (The First People's Hospital of Changzhou), Changzhou 213003, Jiangsu Province, China
| | - Xiu-Wen Zhang
- Department of Hematology, Nanjing Medical University Affiliated Changzhou Second Hospital, Changzhou 213164, Jiangsu Province, China
| | - Shan-Shan Xing
- Department of Hematology, Zhejiang Hospital, Hangzhou 310013, Zhejiang Province, China
| | - Hai-Qian Li
- Department of Hematology, The Third Affiliated Hospital of Soochow University (The First People's Hospital of Changzhou), Changzhou 213003, Jiangsu Province, China,E-mail:
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Wei W, Liu Y, Shang LM, Cao Y, Wang F, Guo YT, Lin RR, Lin Y, Dong WM, Gu WY. [The Effects of Decitabine Combined with All-Trans Retinoic Acid on the Number of Immune Cells in Myeloid Neoplasms]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2022; 30:6-11. [PMID: 35123596 DOI: 10.19746/j.cnki.issn.1009-2137.2022.01.002] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To investigate the effects of decitabine (DEC) combined with all-trans retinoic acid (ATRA) on the number of immune cells, efficacy and adverse reactions in the treatment of myeloid neoplasms patients. METHODS Eighty-four patients with myeloid tumors, including AML, MDS-EB-1 or MDS-EB-2 treated by the regimen containing decitabine in our hospital from January 2009 to October 2019 were enrolled and retrospectively analyzed, among the patients, 21 patients treated with DEC alone, 24 patients treated with DEC combined with ATRA (DEC/ATRA) and 39 patients treated with DEC combined with G-CSF priming regimen (DEC/priming). The changes of peripheral blood immune cell levels before and after treatment of the patients between the three groups were compared, and the differences in clinical efficacy and adverse reactions of the patients between the three groups were also compared. RESULTS There was no statistical differences in the number of immune cells among the patients in the three groups before treatment (P>0.05). NK cell levels decreased significantly in the patients in DEC and DEC/ATRA group after treatment (P<0.05); After treatment, the levels of CD8+ and CD3+T cells in the patients treated by DEC /priming regimen significantly increased (P<0.05), while the levels of CD3-HLA-DR+ B cells significantly decreased (P<0.05). The overall response rate (ORR) of the patients in DEC/ATRA group (75%) and DEC/priming group (74.36%) was significantly higher than 42.86% in DEC monotherapy group, and the differences showed statistically significant (P<0.05), while the ORR between the patients in DEC/ATRA and DEC/priming group showed no statistic differences (P>0.05). There were no statistical differences in overall survival (OS) and incidence of bleeding between the patients in the three groups (P>0.05). The incidences of grade 3 to 4 bone marrow suppression and the infection rate of the patients in DEC monotherapy and DEC/ATRA group were significantly lower than that in DEC/priming regimen group after treatment (all P<0.05), however, there was no statistical difference between DEC monotherapy and the DEC/ATRA group. CONCLUSION The efficacy of DEC/ATRA on myeloid neoplasms is comparable to that of DEC/priming regimen, and the anti-myeloid tumor effect of DEC/ATRA regimen may be related to the regulation of NK cells and T cells.
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Affiliation(s)
- Wei Wei
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Yue Liu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Li-Mei Shang
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Yang Cao
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Fei Wang
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Yan-Ting Guo
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Rong-Rong Lin
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Yan Lin
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Wei-Min Dong
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Wei-Ying Gu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China,E-mail:
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Nie YW, Li Y, Luo L, Zhang CY, Fan W, Gu WY, Shi KR, Zhai XX, Zhu JY. Phytochemistry and Pharmacological Activities of the Diterpenoids from the Genus Daphne. Molecules 2021; 26:6598. [PMID: 34771007 PMCID: PMC8588408 DOI: 10.3390/molecules26216598] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/28/2021] [Accepted: 10/28/2021] [Indexed: 01/08/2023] Open
Abstract
There are abundant natural diterpenoids in the plants of the genus Daphne from the Thymelaeaceae family, featuring a 5/7/6-tricyclic ring system and usually with an orthoester group. So far, a total of 135 diterpenoids has been isolated from the species of the genus Daphne, which could be further classified into three main types according to the substitution pattern of ring A and oxygen-containing functions at ring B. A variety of studies have demonstrated that these compounds exert a wide range of bioactivities both in vitro and in vivo including anticancer, anti-inflammatory, anti-HIV, antifertility, neurotrophic, and cholesterol-lowering effects, which is reviewed herein. Meanwhile, the fascinating structure-activity relationship is also concluded in this review in the hope of providing an easy access to available information for the synthesis and optimization of efficient drugs.
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Affiliation(s)
- Yi-Wen Nie
- Department of Pharmacy, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China; (Y.-W.N.); (Y.L.); (W.F.); (W.-Y.G.); (K.-R.S.)
- Central Laboratory, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China;
| | - Yuan Li
- Department of Pharmacy, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China; (Y.-W.N.); (Y.L.); (W.F.); (W.-Y.G.); (K.-R.S.)
- Central Laboratory, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China;
| | - Lan Luo
- Department of Pharmacy, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China; (Y.-W.N.); (Y.L.); (W.F.); (W.-Y.G.); (K.-R.S.)
| | - Chun-Yan Zhang
- Central Laboratory, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China;
| | - Wei Fan
- Department of Pharmacy, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China; (Y.-W.N.); (Y.L.); (W.F.); (W.-Y.G.); (K.-R.S.)
| | - Wei-Ying Gu
- Department of Pharmacy, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China; (Y.-W.N.); (Y.L.); (W.F.); (W.-Y.G.); (K.-R.S.)
| | - Kou-Rong Shi
- Department of Pharmacy, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China; (Y.-W.N.); (Y.L.); (W.F.); (W.-Y.G.); (K.-R.S.)
| | - Xiao-Xiang Zhai
- Department of Dermatology, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China;
| | - Jian-Yong Zhu
- Central Laboratory, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China;
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Li F, Yao FS, Zhu XJ, Gu WY, Wang XH, Chen B, Huang DP, Ding JH, Wu TQ, Zhu Y, Zhao Q, Tang YM, Song P, Zhou XG, An ZM, Guo X, Wang XL, Zhong L, Xie XB, Zhai YP. A randomized phase II, open-label and multicenter study of combination regimens of bortezomib at two doses by subcutaneous injection for newly diagnosed multiple myeloma patients. J Cancer Res Clin Oncol 2019; 145:2343-2355. [PMID: 31280348 DOI: 10.1007/s00432-019-02967-3] [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: 05/16/2019] [Accepted: 07/01/2019] [Indexed: 12/14/2022]
Abstract
PURPOSE Combinations of bortezomib (Velcade), cyclophosphamide and dexamethasone have shown significant efficacy and safety for patients of newly diagnosed multiple myeloma (NDMM). In this study, we compared the efficacy and safety of modified VCD regimens with novel changes in bortezomib dose and schedule for NDMM. METHODS Eighty-five NDMM patients from multiple centers were randomly assigned to a high-dose (1.6 mg/m2) (group A) or a low-dose (1.3 mg/m2) (group B) bortezomib, administrated on days 1, 6, 11, and 16 subcutaneously in a 4-week cycle for nine cycles, combined with 40 mg dexamethasone on bortezomib days and cyclophosphamide 300 mg/m2 on days 1-3 intravenously. RESULTS After four cycles, complete response (CR) or better in group A (43.6%) was higher than that in group B (12.8%) (P = 0.002). During induction, for patients with R-ISS stage III, the CR or better rate in group A was superior to that in group B (P = 0.01). Of patients < 65, the CR or better rate of group A was superior to that of group B (P = 0.004). Rapid onset of CR occurred in group A (P < 0.01). Meanwhile, rate of 3-4 diarrhea was higher in group A (P = 0.03), which caused higher rate of dose reduction for patients ≥ 65 (P = 0.041). No significant difference between the two groups in PFS and OS. CONCLUSIONS The studied high-dose VCD as induction regimen had an improved CR rate, especially in patients < 65 or with R-ISS stage III, and is feasible for young and high-risk patients. Trial registration ClinicalTrials.gov: NCT02086942.
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Affiliation(s)
- Feng Li
- Department of Hematology, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan EAST Rd, Nanjing, 210002, Jiangsu, People's Republic of China
| | - Fu-Sheng Yao
- Department of Hematology, An Qing Municipal Hospital, Anqing, Anhui, People's Republic of China
| | - Xi-Jun Zhu
- Department of Hematology, Xuancheng People's Hospital, Xuancheng, Anhui, People's Republic of China
| | - Wei-Ying Gu
- Department of Hematology, The First People's Hospital of Changzhou, Third Affiliated to Suzhou University, Changzhou, Jiangsu, People's Republic of China
| | - Xiao-Hua Wang
- Department of Hematology, The Second People's Hospital of Wuhu, Wuhu, Anhui, People's Republic of China
| | - Bing Chen
- Department of Hematology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, Jiangsu, People's Republic of China
| | - Dong-Ping Huang
- Department of Hematology, The First Affiliated Hospital of Wannan Medical College, Wuhu, Anhui, People's Republic of China
| | - Jia-Hua Ding
- Department of Hematology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, People's Republic of China
| | - Tian-Qin Wu
- Department of Hematology, The 904th Hospital of Chinese People's Liberation Army, Suzhou, Jiangsu, People's Republic of China
| | - Yan Zhu
- Department of Hematology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, People's Republic of China
| | - Qian Zhao
- Department of Hematology, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan EAST Rd, Nanjing, 210002, Jiangsu, People's Republic of China
| | - Yu-Mei Tang
- Department of Hematology, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan EAST Rd, Nanjing, 210002, Jiangsu, People's Republic of China
| | - Ping Song
- Department of Hematology, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan EAST Rd, Nanjing, 210002, Jiangsu, People's Republic of China
| | - Xiao-Gang Zhou
- Department of Hematology, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan EAST Rd, Nanjing, 210002, Jiangsu, People's Republic of China
| | - Zhi-Ming An
- Department of Hematology, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan EAST Rd, Nanjing, 210002, Jiangsu, People's Republic of China
| | - Xing Guo
- Department of Hematology, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan EAST Rd, Nanjing, 210002, Jiangsu, People's Republic of China
| | - Xu-Li Wang
- Department of Hematology, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan EAST Rd, Nanjing, 210002, Jiangsu, People's Republic of China
| | - Long Zhong
- Department of Hematology, An Qing Municipal Hospital, Anqing, Anhui, People's Republic of China
| | - Xiao-Bao Xie
- Department of Hematology, The First People's Hospital of Changzhou, Third Affiliated to Suzhou University, Changzhou, Jiangsu, People's Republic of China
| | - Yong-Ping Zhai
- Department of Hematology, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan EAST Rd, Nanjing, 210002, Jiangsu, People's Republic of China.
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Dong WM, Cao Y, Xiang LL, Lin Y, Liu Y, Cen JN, Xie XB, Gu WY. [All-Trans Retinoic Acid and Decitabine Synergistically Induce Anti-Leukemia Effect on U937 Cell Line and Newly Diagnosed Elder AML Patients]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2018; 26:964-971. [PMID: 30111392 DOI: 10.7534/j.issn.1009-2137.2018.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To investigate the effect of all transretinoicacid(ATRA) combined with decitabine (5-Aza-2'-deoxycytidine;DAC) on DNA methylation and gene expression of p16INK4a (p16) and retinoic acid receptor β (RARβ), and to explore their combined anti neoplastic effect on U937 cells and newly diagnose delder acute myeloid leukemia(AML) patients. METHODS The expression levels of p16 and RARβ were determined by qRT-PCR and Western blot. Methylation-specific PCR was used to analyze their methylation status. WST-1 and flow cytometry were performed to detect growth inhibition, differentiation, apoptosis and cell cycle of U937 cells respectively. RESULTS The expression p16 and RARβ was down-regulated by promoter hypermethylation in newly diagnose delder AML patients and U937 cells. Combination treatment of ATRA and DAC induced DNA hypomethylation as well as gene expression of p16 and RARβ, which contributed to the growth inhibition, differentiation, apoptosis and cell cycle arrest of U937 cells. In addition for elder AML patients intolerable to standard chemotherapy, the combination regimen of ATRA and DAC showed antineoplastic activity accompamied by up-regulation of p16 and RARβ expression and decrease of bone marrow blast, moreover the parients showed good tolerence to the reginen. CONCLUSION The regimen of ATRA combined with DAC as the combination therapeutic strategy for inducing differentiation and demethylation possesses the anti-AML potency, and contributes to optimizing the therapeutic strategy for elder AML patients and promoting the clinical prognosis.
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Affiliation(s)
- Wei-Min Dong
- DepartmentofHematology,TheThirdAffiliatedHospitalofSuzhouUniversity,TheFirstPeople'sHospitalofChangzhou,Changzhou 213003,JiangsuProvince,China
| | - Yang Cao
- DepartmentofHematology,TheThirdAffiliatedHospitalofSuzhouUniversity,TheFirstPeople'sHospitalofChangzhou,Changzhou 213003,JiangsuProvince,China
| | - Li-Li Xiang
- DepartmentofHematology,TheCentralHospitalofXuzhou,Xuzhou221009,JiangsuProvince, China
| | - Yan Lin
- DepartmentofHematology,TheThirdAffiliatedHospitalofSuzhouUniversity,TheFirstPeople'sHospitalofChangzhou,Changzhou 213003,JiangsuProvince,China
| | - Yue Liu
- DepartmentofHematology,TheThirdAffiliatedHospitalofSuzhouUniversity,TheFirstPeople'sHospitalofChangzhou,Changzhou 213003,JiangsuProvince,China
| | - Jian-Nong Cen
- JiangsuInstituteofHematology,TheFirstAffiliatedHospitalofSuzhouUniversity,Suzhou215006,JiangsuProvince,China
| | - Xiao-Bao Xie
- DepartmentofHematology,TheThirdAffiliatedHospitalofSuzhouUniversity,TheFirstPeople'sHospitalofChangzhou,Changzhou 213003,JiangsuProvince,China
| | - Wei-Ying Gu
- DepartmentofHematology,TheThirdAffiliatedHospitalofSuzhouUniversity,TheFirstPeople'sHospitalofChangzhou,Changzhou 213003,JiangsuProvince,
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12
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Gu WY, Tao X, Zhang LL, Wang L, Zhou XR, Ning Y. [Synchronous mucinous metaplasia and neoplasia of the female genital tract]. Zhonghua Bing Li Xue Za Zhi 2018; 47:845-850. [PMID: 30423608 DOI: 10.3760/cma.j.issn.0529-5807.2018.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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 describe the clinicopathological features of synchronous mucinous metaplasia and neoplasia of the female genital tract (SMMN-FGT). Methods: The sample consisted of 7 cases of SMMN-FGT recorded from November 2014 to September 2017 at Obstetrics and Gynecology Hospital, Fudan University.PAP method was used in immunohistochemistry.Clinical histories were retrieved and pathological slides were reviewed. Results: The patients were 37 to 70 years old(mean 54 years old). All patients showed endometrial mucinous lesions associated with cervical lesions. Three cases were an admixture of minimal deviation adenocarcinoma(MDA) and gastrictype adenocarcinoma(GAS). Three cases were an admixture of lobular endocervical glandular hyperplasia (LEGH), atypical LEGH and focal gastrictype adenocarcinoma in situ, one of which had early invasive gastrictype adenocarcinoma.Endometrium showed a structure of LEGH in one patient with focal simple gastric mucinous metaplasia in her cervix. Gastric mucinous differentiation was found in unilateral fallopian tube in 6 patients. Ovarian mucinous lesions were found in 3 patients. p16 was negative staining in 6 cases and positive in 1 case. CK7 was diffusely positive in all lesions. CK20 and CDX2 were negative or only focally positive.The expression of MUC6 was strongly positive staining or focal staining. p53 in GAS and GAS in situ had mutant expression, but wild expression in MDA region. Patients were followed up for 2 to 34 months and no recurrence was found. Conclusions: SMMN-FGT is a series of rare mucinous lesions involving multiple areas of the female genital tract, including benign or malignant lesions with gastric differentiation. It is not related to infection with high-risk human papilloma virus. When cervical gastrictype lesions are found, SMMN-FGT should be considered and should be differentiated from metastatic mucinous adenocarcinoma.
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Affiliation(s)
- W Y Gu
- Department of Pathology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200090, China
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Gu WY, Zhang LL, Zhang H, Pan QZ, Qu YQ, Tao X, Ning Y. [Ovarian clear cell borderline tumour: a clinicopathologic analysis]. Zhonghua Bing Li Xue Za Zhi 2018; 47:622-626. [PMID: 30107668 DOI: 10.3760/cma.j.issn.0529-5807.2018.08.010] [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 investigate the clinical and pathological characteristics and prognosis of ovarian clear cell borderline tumor. Methods: A total of 12 cases of ovarian clear cell borderline tumors recorded were collected from May 2011 to December 2017 at Obstetrics and Gynecology Hospital, Fudan University.Clinical histories were retrieved and pathological slides were reviewed. Results: The age of the patients ranged from 35 to 65 years with a mean age of 52 years. Seven cases were associated with cystic endometriosis of the ovary. All tumors consisted of irregular and crowded glands or cysts embedded in a fibromatous stroma. The cysts and glands were lined by mild to moderate atypical cells.CK7 and HNF-1β were expressed in all cases, and Naspin A was expressed in 11 cases. ARID1A expression was absent in 5 cases and p53 showed wild-type expression. None of the cases developed recurrence during follow-up ranging from 7 to 79 months. Conclusions: Ovarian clear cell borderline tumor may be associated with endometriosis and tumor suppressor gene ARIDA. The tumor has a good prognosis without recurrence and progression to carcinoma.
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Affiliation(s)
- W Y Gu
- Department of Pathology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200090, China
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Lin Y, Xie HH, Zhao W, Wu M, Gu WY. [The 458th case: fever, cytopenia, abdominal pain, and multiple intestinal ulcerations with perforation]. Zhonghua Nei Ke Za Zhi 2017; 56:789-792. [PMID: 29036968 DOI: 10.3760/cma.j.issn.0578-1426.2017.10.020] [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
Trisomy 8 in myelodysplastic syndrome (MDS) plays an important role in concurrent intestinal Behçet's disease (BD) pathogenesis. Here, we reported a case of intestinal BD combined with MDS involving trisomy 8. A 48-year-old woman who has had a 20-year history of recurrent oral ulcer, perineal ulcer and iris, was diagnosed as MDS with trisomy 8 four years ago. She developed high fever and acute abdominal pain. Multiple ulcerative perforations in ileum and colon were found by endoscopy, meeting the criteria for intestinal BD. The patient was successfully treated with immunomodulatory drugs.
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Affiliation(s)
| | | | | | | | - W Y Gu
- Department of Hematology, the First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
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Xiang LL, Qiu GQ, Xie XB, Cen JN, Hu SY, Gu WY. [Prognostic Significance of the Percentage of Blasts with CD34 +/CD38 low/-/CD123 + Phenotype in Acute Myeloid Leukemias]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2017; 25:61-65. [PMID: 28245376 DOI: 10.7534/j.issn.1009-2137.2017.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To investigate the percentage of blasts with the CD34+/CD38low/-/CD123+ phenotype in de novo acute myeloid leukemia (AML) patients and analyse its correlation with prognosis. METHODS The percentage of CD34+/CD38low/-/CD123+ cells in the blast population of 148 newly diagnosed patients with AML was determined by using flow cytometry and its correlation with complete response, disease-free survival and overall survival were evaluated. RESULTS The median percentage of CD34+/CD38low/-/CD123+ cells in newly diagnosed patients was 2.8% (ranged from 0.01 to 67%). The high expression of CD34+/CD38low/-/CD123+ in AML patients positively correlated with the NPM1 wild-type (χ2=5.194,P<0.05), but did not relate with the positive FLT3-ITD mutations (χ2=0.418,P>0.05). Further multivariable analysis showed that the higher expression of the CD34+/CD38low/-/CD123+ was associated with lower complete remission (P<0.05), worse disease-free survival(P<0.01) and shorter overall survival(P<0.01) in AML patients. CONCLUSION The percentage of CD34+/CD38low/-/CD123+ cells at diagnosis significantly correlates with the response to treatment and survival. This prognostic marker may be used to rapidly identify the risk of treatment failure in clinical practice.
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Affiliation(s)
- Li-Li Xiang
- Department of Hematology, The Central Hospital of Xuzhou, Xuzhou 221009, Jiangsu Province, China
| | - Guo-Qiang Qiu
- Laboratory of Hematology, Third Hospital Affiliated to Suzhou University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Xiao-Bao Xie
- Department of Hematology, Third Hospital Affiliated to Suzhou University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Jian-Nong Cen
- Jiangsu Institute of Hematology, The First Hospital Affiliated to Suzhou University, Suzhou 215006, Jiangsu Province, China
| | - Shao-Yan Hu
- Department of Hematology, Children's Hospital of Suzhou University, Suzhou 215006, Jiangsu Province, China
| | - Wei-Ying Gu
- Department of Hematology, Third Hospital Affiliated to Suzhou University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China. E-mail:
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Wu W, Gu WY, Dong WM, Wang B, Zhang XM, Zheng ZJ, Xie XB. [Autologous Peripheral Blood Hematopoietic Stem Cell Transplantation with IBu Precondition Regimen in Treatment for 11 Patients with Low to Intermediate Risk Acute Myeloid Leukemia]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2017; 25:192-197. [PMID: 28245400 DOI: 10.7534/j.issn.1009-2137.2017.01.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To evaluate safety and efficacy of autologous peripheral blood hematopoietic stem cell transplantation (auto-PBHSCT) with IBu precondition regimen consisting of high-dose idarubicin (IDA) and busulphan (Bu) for treatment of patients with low and intermediate risk acute myeloid leuekmia (AML). METHODS A total of 11 patients with AML (5 low and 6 intermediate risk patients) treated with auto-PBHSCT with IBu precondition regimen (IDA 20 mg/m2, continuous i.v. from d-13 to d-11, Bu 0.8 mg/kg/q6h i.v. for 2h, from d-5 to d-2) from March 2011 to July 2014 were analyzed retrospectively. Adverse effects and transplantation-related mortality (TRM) were evaluated. Kaplan-Meier analysis was performed to calculate the overall survival (OS), disease-free survival (DFS) and cumulative relapse rate (RR). Cox regression was performed for univariate analysis for DFS. RESULTS Among the 11 patients, 10 patients obtained hematopoietic reconstitution, 1 patient died during transplantation, thus the TRM was 9.1%. The adverse effects were well tolerated. With median follow-up of 31.6 (8.7-52.5) months, 7 patients (63.3%) were alive, including 6 patients (54.5%) in continuous complete remission (CR). Median OS and DFS were not reached. The 3-year OS, DFS and RR were (57.7±16.3)%, (52.5±17.6)% and 47.5%, respectively. Univartiate analysis indicated that the age, sex, interval between diagnosis and transplantation, white blood cell count at diagnosis, risk-grouping (low or intermediate risk), disease status before transplantation (CR1 or CR2), and count of mononuclear cells for infusion all can not influence DFS(P>0.05, respectively). CONCLUSION The treatment of auto-PBHSCT with IBu precondition regimen for low to intermediate risk AML patients is safe and effective.
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Affiliation(s)
- Wei Wu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Wei-Ying Gu
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China. E-mail:
| | - Wei-Min Dong
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Biao Wang
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Xiao-Mei Zhang
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Zhuo-Jun Zheng
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
| | - Xiao-Bao Xie
- Department of Hematology, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, China
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Cao Y, Qiu GQ, Wu HQ, Wang ZL, Lin Y, Wu W, Xie XB, Gu WY. Decitabine enhances bortezomib treatment in RPMI 8226 multiple myeloma cells. Mol Med Rep 2016; 14:3469-75. [PMID: 27571872 DOI: 10.3892/mmr.2016.5658] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Accepted: 06/24/2016] [Indexed: 11/06/2022] Open
Abstract
The present study investigated the interactions between decitabine (DAC) and bortezomib (BTZ) in RPMI 8226 multiple myeloma (MM) cells. Cells were exposed to DAC alone and in combination with BTZ for 48 h. A Cell Counting Kit‑8 assay was performed to assess the rate of proliferation inhibition in the cells. Cell apoptosis was investigated by Annexin V-fluorescein isothiocyanate and propidium iodide staining. Flow cytometry was used to detect the different cell cycle stages. Western blotting was performed to analyze the protein expression levels of poly(ADP‑ribose) polymerase 1 (PARP‑1), caspase‑3, ‑9 and DNA (cytosine‑5‑)‑methyltransferase 1 (DNMT1). Reverse transcription‑quantitative polymerase chain reaction was used to assess DNMT1 gene expression. The combination of DAC and BTZ increased the proliferation inhibition, apoptotic rate and G0‑G1 arrest compared with use of a single therapeutic agent. In addition, the combination treatment enhanced PARP‑1 cleavage, caspase‑3 and caspase‑9 activation and downregulated the protein and mRNA expression levels of DNMT1. Therefore, the current study determined that the combination of BTZ and the epigenetic agent DAC may be a novel therapeutic strategy to improve the efficacy of BTZ in patients with MM.
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Affiliation(s)
- Yang Cao
- Department of Hematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Suzhou University, Changzhou, Jiangsu 213003, P.R. China
| | - Guo-Qiang Qiu
- Department of Hematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Suzhou University, Changzhou, Jiangsu 213003, P.R. China
| | - Hao-Qing Wu
- Department of Hematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Suzhou University, Changzhou, Jiangsu 213003, P.R. China
| | - Zhi-Lin Wang
- Department of Hematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Suzhou University, Changzhou, Jiangsu 213003, P.R. China
| | - Yan Lin
- Department of Hematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Suzhou University, Changzhou, Jiangsu 213003, P.R. China
| | - Wei Wu
- Department of Hematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Suzhou University, Changzhou, Jiangsu 213003, P.R. China
| | - Xiao-Bao Xie
- Department of Hematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Suzhou University, Changzhou, Jiangsu 213003, P.R. China
| | - Wei-Ying Gu
- Department of Hematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Suzhou University, Changzhou, Jiangsu 213003, P.R. China
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Yang XY, Zhang MY, Zhou Q, Wu SY, Zhao Y, Gu WY, Pan J, Cen JN, Chen ZX, Guo WG, Chen CS, Yan WH, Hu SY. High expression of S100A8 gene is associated with drug resistance to etoposide and poor prognosis in acute myeloid leukemia through influencing the apoptosis pathway. Onco Targets Ther 2016; 9:4887-99. [PMID: 27540302 PMCID: PMC4982505 DOI: 10.2147/ott.s101594] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
S100A8 has been increasingly recognized as a biomarker in multiple solid tumors and has played pivotal roles in hematological malignancies. S100A8 is potentially an indicator for poor survival in acute myeloid leukemia (AML) in retrospective studies. However, the mechanisms of S100A8 are diverse in cancers. In this study, we investigated the correlation of S100A8 at the transcription level with clinical parameters in 91 de novo AML patients and explored its mechanisms of chemoresistance to etoposide in vitro. The transcription level of S100A8 was significantly lower at initial and relapse stages of AML samples than at complete remission (P<0.001) and than in the control group (P=0.0078), while no significant difference could be found between initial and relapse stages (P=0.257). Patients with high transcription levels of S100A8 exhibited a shorter overall survival (P=0.0012). HL-60 cells transfected with S100A8 showed resistance to etoposide with a higher level IC50 value and lower apoptosis rate compared with HL-60 cells transfected with empty vector. Thirty-six genes were significantly downregulated and 12 genes were significantly upregulated in S100A8 overexpression group compared with control group in which 360 genes involved in apoptotic genes array were performed by real-time reverse transcriptase polymerase chain reaction. Among them, the caspase-3, Bcl-2, and Bax were verified by Western blot analysis which indicated that the role of S100A8 in resistance to chemotherapy was closely related with antiapoptosis. In conclusion, critical S100A8 provided useful clinical information in predicting the outcome of AML. The main mechanism of S100A8 which promoted chemoresistance was antiapoptosis.
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Affiliation(s)
- Xiao-Yan Yang
- Department of Haematology and Oncology, Children's Hospital of Soochow University
| | - Ming-Ying Zhang
- Department of Haematology and Oncology, Children's Hospital of Soochow University
| | - Qi Zhou
- Department of Haematology and Oncology, Children's Hospital of Soochow University
| | - Shui-Yan Wu
- Department of Haematology and Oncology, Children's Hospital of Soochow University
| | - Ye Zhao
- Department of Haematology, The First Affiliated Hospital of Soochow University, Suzhou
| | - Wei-Ying Gu
- Department of Haematology, The Third Affiliated Hospital of Soochow University, Changzhou, People's Republic of China
| | - Jian Pan
- Department of Haematology and Oncology, Children's Hospital of Soochow University
| | - Jian-Nong Cen
- Department of Haematology, The First Affiliated Hospital of Soochow University, Suzhou
| | - Zi-Xing Chen
- Department of Haematology, The First Affiliated Hospital of Soochow University, Suzhou
| | - Wen-Ge Guo
- Department of Mathematical Sciences, New Jersey Institute of Technology, Newark, NJ
| | - Chien-Shing Chen
- Department of Internal Medicine, Division of Hematology and Medical Oncology and Biospecimen Laboratory, Loma Linda University, Loma Linda, CA, USA
| | - Wen-Hua Yan
- Department of Cardiology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Shao-Yan Hu
- Department of Haematology and Oncology, Children's Hospital of Soochow University
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Zhi YJ, Zhi F, Wang R, Xue L, Gu WY, Wang B, Dong WM, Li HQ, Ling Y, Qiu GQ, Wang ZL, Cao XS, Liu Y. [MicroRNA-10a expression in FAB different subtype of acute myeloid leukemia and its relationship with drug resistance]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2015; 23:29-33. [PMID: 25687041 DOI: 10.7534/j.issn.1009-2137.2015.01.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE This study was to investigate the expression of miR-10a in the different FAB subtype of acute myeloid leukemia (AML) and its relationship with drug resistance. METHODS Forty de novo patients with AML, 16 patients with non-malignant hematologic disease and three AML cell lines HL-60, U937 and HL-60/ADR were enrolled in this study, the MiR-10a expression in bone marrow mononuclear cells of above-mentioned patients and 3 AML cell lines was detected by TaqMan RT-PCR. The correlation of miR-10a with clinicopathological factors of AML patients was analyzed. RESULTS The miR-10a expression level in HL-60 cell line was higher than that in U937 cell line (P = 0.039). And its expression level in de novo AML patients was higher than that in patients with non-malignant hematologic disease (P < 0.01). FAB-AML-M3 patients exhibited higher expression of miR-10a than that in M1, M2 and M4 (P < 0.05); HL-60/ADR cell line showed higher miR-10a expression than that in HL-60 cell line (P < 0.01) . Except M3, the patients without CR (non-CR) after the first cycle of chemotherapy showed a higher level of miR-10a as compared with CR patients (P < 0.01). CONCLUSION The high expression of miR-10a may be closely related to over-proliferation of promyelocyte and drug resistance of acute myeloid leukemia cells, except M3.
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Affiliation(s)
- Yong-Jin Zhi
- Department of Hematology, The Third Hospital Affiliated to Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Feng Zhi
- Research Center of Modern Medicine, The Third Hospital Affiliated to Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Rong Wang
- Research Center of Modern Medicine, The Third Hospital Affiliated to Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Lian Xue
- Research Center of Modern Medicine, The Third Hospital Affiliated to Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Wei-Ying Gu
- Department of Hematology, The Third Hospital Affiliated to Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Biao Wang
- Department of Hematology, The Third Hospital Affiliated to Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Wei-Min Dong
- Department of Hematology, The Third Hospital Affiliated to Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Hai-Qian Li
- Department of Hematology, The Third Hospital Affiliated to Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Yun Ling
- Department of Hematology, The Third Hospital Affiliated to Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Guo-Qiang Qiu
- Department of Hematology, The Third Hospital Affiliated to Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Zhi-Lin Wang
- Department of Hematology, The Third Hospital Affiliated to Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Xiang-Shan Cao
- Department of Hematology, The Third Hospital Affiliated to Soochow University, Changzhou 213003, Jiangsu Province, China
| | - Yan Liu
- Department of Hematology, The Third Hospital Affiliated to Soochow University, Changzhou 213003, Jiangsu Province, China. E-mail:
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Dong WM, Cao XS, Wang B, Lin Y, Hua XY, Qiu GQ, Gu WY, Xie XB. Allogeneic hemopietic stem cell transplants for the treatment of B cell acute lymphocytic leukemia. Asian Pac J Cancer Prev 2014; 15:6127-30. [PMID: 25124585 DOI: 10.7314/apjcp.2014.15.15.6127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE Explore the feasibility of allo- hemopietic stem cell transplants in treating patients with B cell acute lymphocytic leukemia. METHODS Between september 2006 and February 2011, fifteen patients with B cell acute lymphocytic leukemia (ALL) were treated by allo-hemopietic stem cell transplants (HSCT). Stem cell sources were peripheral blood. Six patients were conditioned by busulfan (BU) and cyclophosphamide (CY) and nine patients were conditioned with TBI and cyclophosphamide (CY). Graft versus host disease (GVHD) prophylaxis regimen consisted of cyclosporine A (CSA), methotrex ate (MTX) and mycophenolatemofetil (MMF). RESULTS Patients received a median of 7.98×10⁸·kg⁻¹ (5.36-12.30×10⁸·kg⁻¹) mononuclear cells (MNC). The median time of ANC>0.5×10⁹/L was day 12 (10-15), and PLT>20.0×10⁹/L was day 13 (11-16). Extensive acute GVHD occurred in 6 (40.0%) patients, and extensive chronic GVHD was recorded in 6 (40.0%) patients. Nine patients were alive after 2.5-65 months follow-up. CONCLUSION Allogeneic stem cell transplant could be effective in treating patients with B cell acute lymphocytic leukemia.
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Affiliation(s)
- Wei-Min Dong
- Department of Hematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Suzhou University, Changzhou, Jiangsu, China E-mail :
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21
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Shu JJ, Zhang C, Wang TF, Zou H, Jin L, Gu WY, Zhang LC. Synthesis of Novel Danshensu Alkamine Derivatives as Potential Anti-Myocardial Ischemia Agents. ACTA ACUST UNITED AC 2014. [DOI: 10.14233/ajchem.2014.16676] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Yang ZY, Yu S, Chen LQ, Zhou J, Qiao YJ, Gu WY. QAM accommodated double-side band fast OFDM based on IDCT. Opt Express 2013; 21:32441-32449. [PMID: 24514838 DOI: 10.1364/oe.21.032441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this paper, we theoretically and experimentally prove that sub-carriers in double-side band fast orthogonal frequency division multiplexing (DSB-FOFDM) are orthogonal over a symbol interval independent of the signal phase and amplitude. Therefore, the commonly utilized DSB-FOFDM is quadrature amplitude modulation (QAM) accommodated; while previously DSB-FOFDM was usually modulated by amplitude shift keying (ASK) or binary phase shift keying (BPSK). In our proof-of-concept experiments, bit error ratio (BER) performance of 10 Gb/s quadrature phase shift keying (QPSK) modulated DSB-FOFDM was equivalent to that of 10 Gb/s QPSK modulated OFDM after 500 km standard single mode fiber (SSMF) transmission. 10 Gb/s QPSK modulated DSB-FOFDM largely outperformed the commonly utilized 4-ASK modulated DSB-FOFDM in BER performance. Additionally, BER performance of 10 Gb/s 16-QAM modulated DSB-FOFDM was equivalent to that of 10 Gb/s 16-QAM modulated OFDM after 500 km SSMF transmission.
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23
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Pan QF, Li WT, Dong HC, Chen YZ, Yin L, Liu W, Wang WW, Liu D, Li SG, Gu WY, Chen JZ, Yang L, Zhang WJ, Li F. PTEN hypermethylation profiles of Chinese Kazakh patients with esophageal squamous cell carcinoma. Dis Esophagus 2013; 27:396-402. [PMID: 23980519 DOI: 10.1111/dote.12106] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [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] [Indexed: 12/11/2022]
Abstract
Aberrant DNA methylation of promoter region CpG islands may serve as an alternative mechanism to genetic defects in the inactivation of tumor suppressor genes (TSGs) in human malignancies. The aim of this study was to examine the promoter methylation status of the PTEN TSG and its association with esophageal squamous cell carcinoma (ESCC) carcinogenesis in a Chinese Kazakh population, which is known to have a relatively high ESCC incidence and mortality. The methylation status of the PTEN promoter region was determined in patients with ESCC (n = 95) and healthy individuals (n = 65) using highly sensitive Sequenom Epityper assays. The methylation level of the PTEN gene was significantly higher in patients with ESCC than in healthy controls. The median methylation level was 10.0% (interquartile range [IQR]: 7.0-11.0%) in patients with ESCC and 6.0% in controls (IQR: 4.0-9.0%; P = 0.001). PTEN methylation levels were higher in male patients with ESCC than in male controls, whereas a trend toward significance was observed between female patients with ESCC and female controls (P = 0.005 and P = 0.086, respectively). The PTEN methylation level was associated with histopathological grade and lymph node metastasis in patients with ESCC (P = 0.002 and P = 0.009, respectively). To our knowledge, this is the first report to show the presence of PTEN promoter CpG hypermethylation in ESCC and its association with tumor metastasis.
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Affiliation(s)
- Q F Pan
- Department of Pathology and Key Laboratory for Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine, Shihezi, China
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24
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Zeng M, Gu WY, Jiang TX, Chen ZX, Qiu GQ, Li M, Wu HQ, Wang ZL, Xie XB, Cao XS. [Effects of simvastatin on PI3K/AKT signaling pathway in human acute monocytic leukemia cell line SHI-1]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2012; 20:268-272. [PMID: 22541079] [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: 05/31/2023]
Abstract
To investigate the effects of 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitor simvastatin (SV) on proliferation, apoptosis and the PI3K/AKT signaling pathway in human acute monocytic leukemia cell line SHI-1. SHI-1 cells were incubated with different concentrations of SV (5, 10, 15 µmol/L). Otherwise, SHI-1 cells without any treatment were used as control. Cells in different groups were collected at 24, 48 and 72 h after incubation for further detection. MTT method was used to assay the growth inhibition rate and flow cytometry was used to detect the early stage apoptosis ratio. The human PI3K-AKT Signaling Pathway RT(2) Profiler(TM) PCR Array was used to detect the expression of 84 genes involved in PI3K-AKT signaling. The results indicated that the SV inhibited the proliferation and inducted the apoptosis of SHI-1 cells in time- and dose-dependent manners significantly. The growth inhibition rates of SHI-1 cells treated with 15 µmol/L SV for 24, 48 and 72 h were 26.82, 47.09 and 63.92, respectively; and their early stage apoptosis ratios were 5.75, 13.25 and 15.59, respectively. Compared with the control group, expression levels of 39 genes were changed in the group of 15 µmol/L SV at 48 h, among them 26 genes were down-regulated and 13 genes were up-regulated. It is concluded that the SV can inhibit proliferation and induce apoptosis of SHI-1 cells, and the mechanism may be associated with the changes of gene expression level in PI3K-AKT signaling pathway regulated by SV.
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Affiliation(s)
- Mei Zeng
- Department of Hematology, Third Affiliated Hospital of Suzhou University, Changzhou, China
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Huang CY, Travascio F, Gu WY. Quantitative analysis of exogenous IGF-1 administration of intervertebral disc through intradiscal injection. J Biomech 2012; 45:1149-55. [PMID: 22365501 DOI: 10.1016/j.jbiomech.2012.02.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 12/22/2011] [Accepted: 02/02/2012] [Indexed: 11/28/2022]
Abstract
Exogenous administration of IGF-1 has been proposed as a therapy for disc degeneration. The objectives of this study were to develop a numerical model for quantitatively analysing exogenous administration of IGF-1 into the intervertebral disc (IVD) via intradiscal injection and to investigate the effects of IGF-1 administration on distribution of glucose and oxygen in the IVD. In this study, the reversible binding reaction between IGF-1 and IGF binding proteins was incorporated into the mechano-electrochemical mixture model. The model was used to numerically analyse transport of IGF-1, glucose, oxygen and lactate in the IVD after IGF-1 administration. The enhancement of IGF-1 on lactate production was also taken into account in the theoretical model. The numerical analyses using finite element method demonstrated that the binding reactions significantly affect the time-dependent distribution of IGF-1 in the IVD. It was found that the region affected by IGF-1 was smaller and the duration of the therapeutic IGF-1 level was longer in the degenerated disc with a higher concentration of IGF binding proteins. It was also found that the IGF-1 injection can reduce glucose concentration and increase lactate accumulation (i.e., lower pH) in the IVD and these influences were regulated by the IGF-1 binding reactions. This study indicated the complexity of intradiscal administration of growth factors, which needs to be fully analysed in order to achieve a successful outcome. The new theoretical model developed in this study can serve as a powerful tool in analysing and designing the optimal treatments of growth factors for disc degeneration.
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Affiliation(s)
- C-Y Huang
- Stem Cell and Mechanobiology Lab, Dept of Biomedical Engineering, University of Miami, Coral Gables, Florida 33146, USA
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Abstract
WT1 (Wilms' tumor gene 1) overexpression is implicated in the prognosis of acute leukemia. The purpose of this study was to investigate WT1 expression and its clinical implication in childhood acute leukemia (AL) in Chinese population. Bone marrow specimen from 200 children at different stages of acute leukemia and from 21 children without leukemia were studied. The WT1 expression at diagnostic marrow specimen in both acute myeloid leukemia (AML) and acute lymphoid leukemia (ALL) was higher than control group, whereas WT1 expression in AML was higher than in ALL, and WT1 expression level in relapse in ALL increased more significantly than in AML. The WT1 expression level showed positive correlation with the hypodiploidy and BCR-ABL fusion gene in acute leukemia. A rapidly decrease of WT1 expression level predicted a good response to the induction therapy and low expression of WT1 correlates with remission status. This study suggested that WT1 expression levels in acute leukemia can potentially be a marker for evaluating therapeutic efficacy, correlating with monitoring minimal residue disease, and predicting hematological relapse in children acute leukemia.
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Affiliation(s)
- Shao-Yan Hu
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou City, China.
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Abstract
The intervertebral disk (IVD) is the largest avascular structure in the human body. Transport of small molecules in IVD is mainly through diffusion from the endplates and the peripheral blood vessels surrounding IVD. Studies have investigated the structure, chemical components, and water content in IVD, but to our knowledge no study has investigated the effect of mechanical loading on oxygen transport in IVD. The objective of this study was to determine the strain-dependent behavior of oxygen diffusivity in IVD tissue. A one-dimensional steady-state diffusion experiment was designed and performed to determine the oxygen diffusivity in bovine annulus fibrosus (AF). The oxygen diffusivity was calculated using equation derived from Fick's law. A total of 20 AF specimens (d=6 mm, h approximately 0.5 mm) from bovine coccygeal IVD were used to determine oxygen diffusivity at three levels of compressive strain. The average oxygen diffusivity (mean+/-SD) of bovine AF in the axial direction was 1.43+/-0.242 x 10(-5) cm(2)/s (n=20) at 4.68+/-1.67% compressive strain level, 1.05+/-0.282 x 10(-5) cm(2)/s (n=20) at 14.2+/-1.50% strain level, and 7.71+/-1.63 x 10(-6) cm(2)/s (n=20) at 23.7+/-1.34% strain level. There was a significant decrease in oxygen diffusivity with increasing level of compressive strain (ANOVA, p<0.05). Oxygen diffusivity of bovine AF in the axial direction has been determined. The mechanical loading has a significant effect on oxygen transport in IVD tissues. This study is important in understanding nutritional transport in IVD tissues and related disk degeneration.
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Affiliation(s)
- T-Y Yuan
- Department of Biomedical Engineering, Tissue Biomechanics Laboratory, University of Miami, Coral Gables, FL 33146, USA
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28
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Hu SY, Chen ZX, Zhao Y, Cen JN, Gu M, Fu ZZ, He J, Gu WY. [Transcriptional activity of WT1 gene promoter and enhancer in diverse cell lines]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2007; 15:1050-1055. [PMID: 17956689] [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: 05/25/2023]
Abstract
The objective of study was to investigate tissue-specific transcriptional activity of WT1 (Wilms' tumor gene) promoter and enhancer in cell lines with diverse tissue origin for leukemic gene therapy depending on WT1 transcriptional regulation elements. WT1 promoter and enhancer were ligated into pEGFP-1 to construct a recombinant vectors with EGFP gene as a reporter. By using electroporation or lipofectamine, the resultant constructs were transfected into 13 cell lines including WT1-expressing hematopoietic cell lines (K562, NB4, THP-1 and SHI-1), WT1-nonexpressing hematopoietic cell lines (U937 and Jurkat), WT1-expressing nonhematopoietic cell lines (MCF-7, T47D and 293) and WT1-nonexpressing nonhematopoietic cell lines (ECV304, SMMC7721, HT-29 and SHG44). The mean fluorescence intensity (MFI) of EGFP representing the transcriptional activities of promoter and/or enhancer was analyzed by using flow cytometry in the transfected cells which stably expressed EGFP. The results indicated that the vectors, pEWP containing WT1 promoter and pEWPA containing both WT1 enhancer and promoter, were constructed by recombinant DNA technique. Among nonhematopoietic cell lines, pEWP induced the highest EGFP expression in ECV304 (16.54 +/- 2.45 times as high as pEGFP-1), mildly higher in MCF-7 and SHG44 (9.46 +/- 1.10 and 7.29 +/- 0.73 times of pEGFP-1 level), and lowest in HT-29 (0.99 +/- 0.02 times as much as pEGFP-1) respectively. Among hematopoietic cell lines, EGFP expression was highest in K562 cell line (2.93 +/- 0.27 times of pEGFP-1), which was statistically higher than those in Jurkat and SHI-1 cell lines (0.74 +/- 0.03 and 0.84 +/- 0.09 times of pEGFP-1 level) respectively. pEWPA, with WT1 enhancer inserted at Afl II site near SV40 polyA, increased basal transcription levels of the WT1 promoter in HT-29, SHI-1 and K562 cells by 4.81, 3.06 and 1.01-fold respectively. It is concluded that the transcriptional activities of WT1 promoter in the recombinant vector seem unrelated to the constitutional expression level of endogenous WT1 gene. The WT1 enhancer promotes the transcriptional activities of WT1 promoter in some of the cell lines regardless of the hematopoietic tissue origin.
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Affiliation(s)
- Shao-Yan Hu
- Jiangsu Institute of Hematology, The First Affiliated Hospital of Suzhou University, Suzhou 215006, China
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Hu SY, Chen ZX, Zhao Y, Gu WY, Cen JN, Qian J. [Application of real-time quantitative PCR in selection of transfected cell strains for transgenic overexpression]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2005; 13:1062-6. [PMID: 16403281] [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: 05/06/2023]
Abstract
To explore the feasibility of real-time quantitative PCR (QRT-PCR) for selecting cell strains which overexpress a certain transgene, expression level of RbAp46 was detected in transfected cell strains by using optimal real-time PCR with SYBR Green I. Meanwhile, semi-quantitative RT-PCR and Western blot were performed to compare with the QRT-PCR. The results showed that values of RbAp46(N) were 2064.42 +/- 253.47, 860.94 +/- 291.07, 234.456 +/- 31.08, 18.17 +/- 5.14 and 1.46 +/- 0.54 in K562/RbAp46, K562/CMV, SHG44/RbAp46 monoclone, SHG44/RbAp46 multiclone and SHG44/CMV, respectively. The results were consistent with that determined by semi-quantitative RT-PCR and Western blot. It is concluded that QRT-PCR provides a highly efficient and reproducible method for selection of transfected cell subclones at different level of transgene expression.
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Affiliation(s)
- Shao-Yan Hu
- Jiangsu Institute of Hematology, The First Affiliated Hospital of Suzhou University, Suzhou 215006, China
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Sheng LX, Xie XB, Qiu GQ, Gu WY, Wang ZL, Wu HQ. [In vitro stimulation of specific antileukemia T-cell response by dendritic cells derived from CD14+ acute monocytic leukemia cells]. Ai Zheng 2005; 24:1338-44. [PMID: 16552959] [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: 05/07/2023]
Abstract
BACKGROUND & OBJECTIVE Dendritic cells (DCs) or DC-like cells had been successfully induced in vitro from leukemia cells, which may provide a promising immunotherapeutic protocol for leukemia. This study was designed to investigate the efficiency of in vitro generation of dendritic cells from CD14+ acute myelomonocytic (M4) or monocytic (M5) leukemia cells and their ability of stimulating specific antileukemia T-cell response. METHODS Bone marrow mononuclear cells (BMMNCs) were isolated from 5 M4/M5 leukemia patients with high CD14 expression, and then divided into 3 groups: adherent leukemia cells, nonadherent blasts, and total unfractioned blasts. CD14 expression of the 3 groups was evaluated by flow cytometry (FCM). When cultured with or without granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukin-4 (IL-4) and tumor necrosis factor alpha (TNF-alpha) for 7-10 days, monocytic leukemia cell-derived dendritic cells (Mo-LDCs) were identified through morphologic observation and immunophenotype analysis using FCM. The immune function of Mo-LDCs was detected through allogeneic mixed lymphocyte reaction (Allo-MLR) and cytotoxicity assay of antileukemia cytotoxic T lymphocytes (CTLs). The leukemic origin of Mo-LDCs was confirmed by chromosomal karyotype analysis combined with the aberrant expression of myeloid antigens. RESULTS The amount of CD14+ cells, which could differentiate into CD83+ mature DCs under induction of the cytokine combination, was higher in adherent leukemia cells than in nonadherent blasts and total unfractioned blasts. Regarding each 3 cell groups of the same patient or the unfractioned blasts of various patients, initial CD14 expression was positively related to the yield of CD83+ DCs after induction (r = 0.967, P = 0.007). Mo-LDCs exhibited typical morphology and phenotype as mature DCs, induced potent proliferation of homogeneous T cells in Allo-MLR, stimulated the expansion of leukemia-specific CTLs, and continued to possess the cytogenetic abnormalities of the original leukemia, as well as the aberrant expression of myeloid antigens. CONCLUSIONS In M4/M5 subtype of AML, CD14+ cells could differentiate into immune-competent Mo-LDCs under the induction of the cytokine combination. CD14 expression level may predict the DCs differentiation ability of monocytic leukemia. Mo-LDCs, which possess the classical phenotype and function of DCs, as well as the abnormal leukemic antigens, may be useful for the immunotherapy of M4/M5 AML.
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Affiliation(s)
- Li-Xia Sheng
- Department of Hematology, The Third Affiliated Hospital, Soochow University, Changzhou, Jiangsu, 213000, PR China
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Gu WY, Chen ZX, Hu SY, Zhu J, Wang ZL, Yan F, Wang W, Cen JN, Shen HL, Qian J. [Significance of dynamic detection of WT1 expression on monitoring minimal residual disease in leukemia patients following allogeneic bone marrow transplantation]. Zhonghua Yi Xue Za Zhi 2005; 85:444-7. [PMID: 15854547] [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: 05/02/2023]
Abstract
OBJECTIVE To investigate the significance of monitoring Wilms' tumor gene (WT1) expression level in bone marrow of leukemia patients following allogeneic bone marrow transplantation (allo-BMT). METHODS Real-time quantitative reverse transcription polymerase chain reaction method was established for measuring WT1 and GAPDH expression levels in bone marrow cells of 15 patients with leukemia, including a total of 111 specimens during the follow-up, and in 23 non-leukemia patients by using LightCycler. Normalized WT1 expression level (WT1(N)) was determined as a ratio of WT1 to GAPDH times 10(4). RESULTS The median expression levels of WT1(N) in 17 samples of newly diagnosed patients, 6 samples of relapsed patients, 88 samples from leukemia patient in complete remission and 23 samples of non-leukemic controls were 40.18 (5.48 to 510.27), 125.89 (34.50 to 273.95), 4.80 (0 to 56.96) and 1.47 (0 to 8.56) respectively. Nonparameter statistic analysis (Mann-Whitney U test) showed that the WT1(N) expression levels in the newly diagnosed group and relapsed group were statistically higher than in those in the complete remission group and non-leukemic controls (all P < 0.01), without significant differences between the complete remission group and control group (P = 0.692) and between the newly diagnosed group and relapsed group (P = 0.595). In general, the dynamic curves of WT1(N) levels following allo-BMT were consistent with the tendency of changes in expression levels of corresponding fusion genes for minimal residual disease (MRD) monitoring. Spearman Rho correlation analysis revealed that the correlation coefficient between the WT1(N) expression levels and BCR/ABL, AML/ETO, PML/RARalpha and MLL/AF17 fusion genes expression were 0.678 (P = 0.00), 0.677 (P = 0.00), 0.806 (P = 0.00) and 0.553 (P = 0.049) respectively. Three patients relapsed after allo-BMT and one patient relapsed before allo-BMT during the follow-up. A re-increment of WT1(N) expression level during follow-up could be detected 40 to 180 days earlier to hematological relapse. CONCLUSION The WT1 expression level of leukemia patients following allo-BMT measured by real time RT-PCR can be a useful tool for monitoring MRD and warning the clinical relapse during follow-up.
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MESH Headings
- Adolescent
- Adult
- Bone Marrow Transplantation
- Child
- Female
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/surgery
- Leukemia, Myeloid, Acute/metabolism
- Leukemia, Myeloid, Acute/surgery
- Male
- Middle Aged
- Reverse Transcriptase Polymerase Chain Reaction
- Transplantation, Homologous
- WT1 Proteins/biosynthesis
- WT1 Proteins/genetics
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Affiliation(s)
- Wei-Ying Gu
- The First Affiliated Hospital of Soochow University, Jiangsu Institute of Hematology, Suzhou 215006, China
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Abstract
In the present study, a 1-D dynamic permeation of a monovalent electrolyte solution through a negatively charged-hydrated cartilaginous tissue is analyzed using the mechano-electrochemical theory developed by Lai et al. (1991) as the constitutive model for the tissue. The spatial distributions of stress, strain, fluid pressure, ion concentrations, electrical potential, ion and fluid fluxes within and across the tissue have been calculated. The dependencies of these mechanical, electrical and physicochemical responses on the tissue fixed charge density, with specified modulus, permeability, diffusion coefficients, and frequency and magnitude of pressure differential are determined. The results demonstrate that these mechanical, electrical and physicochemical fields within the tissue are intrinsically and nonlinearly coupled, and they all vary with time and depth within the tissue.
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Affiliation(s)
- W Y Gu
- Tissue Biomechanics Laboratory, Department of Biomedical Engineering, University of Miami, Coral Gables, FL 33124-0621, USA.
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Gu WY, Yao H, Huang CY, Cheung HS. New insight into deformation-dependent hydraulic permeability of gels and cartilage, and dynamic behavior of agarose gels in confined compression. J Biomech 2003; 36:593-8. [PMID: 12600349 DOI: 10.1016/s0021-9290(02)00437-2] [Citation(s) in RCA: 149] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Equilibrium, creep, and dynamic behaviors of agarose gels (2.0-14.8%) in confined compression were investigated in this study. The hydraulic permeabilities of gels were determined by curve-fitting creep data to the biphasic model (J. Biomech. Eng. 102 (1980) 73) and found to be similar in value to those published in the literature (AIChE J. 42 (1996) 1220). A new relationship between intrinsic permeability and volume fraction of water was found for agarose gel, capable of predicting deformation-dependent permeabilities of bovine articular cartilage and 2% agarose gel published in literature. This relationship is accurate for gels and cartilage over a wide range of permeabilities (four orders of magnitude variation). The dynamic stiffness of the gels increases with gel concentration and loading frequency (0.01-1.0Hz). The increase in dynamic stiffness with loading frequency is less pronounced for gels with higher concentrations. The results of this study provide a new insight into deformation-dependent permeability behavior of agarose gel and cartilage, and are important for understanding biological responses of cells to interstitial fluid flow in gel or in cartilage under dynamic mechanical loading.
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Affiliation(s)
- W Y Gu
- Tissue Biomechanics Laboratory, Department of Biomedical Engineering, College of Engineering, University of Miami, P.O. Box 248294, Coral Gables, FL 33124-0621, USA.
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Abstract
This paper describes a new apparatus and method for measuring swelling dependent electrical conductivity of charged hydrated soft tissues. The apparatus was calibrated using a conductivity standard. Swelling dependent specific conductivity of porcine annulus fibrosis (AF) samples was determined. The conductivity values for porcine AF were similar to those for human and bovine articular cartilage found in the literature. Results revealed a significant linear correlation between specific conductivity and water content for porcine AF tissues tested in phosphate buffered saline (PBS).
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Affiliation(s)
- W Y Gu
- Tissue Biomechanics Lab, Department of Biomedical Engineering, College of Engineering, University of Miami, Coral Gables, FL 33124, USA.
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Xu XR, Huang J, Xu ZG, Qian BZ, Zhu ZD, Yan Q, Cai T, Zhang X, Xiao HS, Qu J, Liu F, Huang QH, Cheng ZH, Li NG, Du JJ, Hu W, Shen KT, Lu G, Fu G, Zhong M, Xu SH, Gu WY, Huang W, Zhao XT, Hu GX, Gu JR, Chen Z, Han ZG. Insight into hepatocellular carcinogenesis at transcriptome level by comparing gene expression profiles of hepatocellular carcinoma with those of corresponding noncancerous liver. Proc Natl Acad Sci U S A 2001; 98:15089-94. [PMID: 11752456 PMCID: PMC64988 DOI: 10.1073/pnas.241522398] [Citation(s) in RCA: 272] [Impact Index Per Article: 11.8] [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: 02/06/2023] Open
Abstract
Human hepatocellular carcinoma (HCC) is one of the most common cancers worldwide. In this work, we report on a comprehensive characterization of gene expression profiles of hepatitis B virus-positive HCC through the generation of a large set of 5'-read expressed sequence tag (EST) clusters (11,065 in total) from HCC and noncancerous liver samples, which then were applied to a cDNA microarray system containing 12,393 genes/ESTs and to comparison with a public database. The commercial cDNA microarray, which contains 1,176 known genes related to oncogenesis, was used also for profiling gene expression. Integrated data from the above approaches identified 2,253 genes/ESTs as candidates with differential expression. A number of genes related to oncogenesis and hepatic function/differentiation were selected for further semiquantitative reverse transcriptase-PCR analysis in 29 paired HCC/noncancerous liver samples. Many genes involved in cell cycle regulation such as cyclins, cyclin-dependent kinases, and cell cycle negative regulators were deregulated in most patients with HCC. Aberrant expression of the Wnt-beta-catenin pathway and enzymes for DNA replication also could contribute to the pathogenesis of HCC. The alteration of transcription levels was noted in a large number of genes implicated in metabolism, whereas a profile change of others might represent a status of dedifferentiation of the malignant hepatocytes, both considered as potential markers of diagnostic value. Notably, the altered transcriptome profiles in HCC could be correlated to a number of chromosome regions with amplification or loss of heterozygosity, providing one of the underlying causes of the transcription anomaly of HCC.
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Affiliation(s)
- X R Xu
- Chinese National Human Genome Center at Shanghai, 351 Guo Shou-Jing Road, Shanghai 201203, China
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36
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Gu WY, Mao XG, Foster RJ, Weidenbaum M, Mow VC, Rawlins BA. The anisotropic hydraulic permeability of human lumbar anulus fibrosus. Influence of age, degeneration, direction, and water content. Spine (Phila Pa 1976) 1999; 24:2449-55. [PMID: 10626306 DOI: 10.1097/00007632-199912010-00005] [Citation(s) in RCA: 133] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Experimental investigation to determine the effect of intervertebral disc degeneration on the kinetic behavior of fluid in human anulus fibrosus. OBJECTIVES To measure the hydraulic permeability coefficient of anulus fibrosus specimens in the axial, circumferential, and radial directions to determine the anisotropic permeability behavior of nondegenerate and degenerate human intervertebral discs over a range of ages. SUMMARY OF BACKGROUND DATA Fluid, a major component of normal intervertebral discs, plays a significant role in their load-supporting mechanisms. Transport of fluid through the intervertebral disc is important for cell nutrition and disc viscoelastic and swelling behaviors. The hydraulic permeability coefficient is the most important material property governing the rate of fluid transport. However, little is known about the anisotropic behavior of this kinetic property and how it is influenced by disc degeneration. METHODS Using a permeation testing apparatus developed recently, testing was performed on 306 axial, circumferential, and radial anulus fibrosus specimens from the posterolateral region of 30 human lumbar (L2-L3) discs. A new method, flow-controlled testing protocol, was developed to measure the hydraulic permeability coefficient. RESULTS The hydraulic permeability coefficient of anulus fibrosus depended significantly on the disc degenerative grade (P = 0.0001) and flow direction (P = 0.0001). For the nondegenerate group (Grade I), the hydraulic permeability was significantly anisotropic (P < 0.05), with the greatest value in the radial direction (1.924 x 10(-15) m4/Ns) and the lowest value in the circumferential direction (1.147 x 10(-15) m4/Ns). This anisotropic kinetic (flow) behavior of anulus fibrosus varied with disc degeneration. For the Grade III specimen group, there was no significant difference in hydraulic permeability coefficient among the three major directions (P = 0.37). With disc degeneration, the hydraulic permeability coefficient was decreased in the radial direction and increased in the axial and circumferential directions. The variations of hydraulic permeability coefficient from nondegenerate discs (Grade I) to mildly degenerate discs (Grade II) in each direction were significant (P < 0.05). However, the changes in permeability from Grade II to Grade III groups were not significant (P > 0.05) except in the circumferential direction (3.8% increase; P < 0.05). CONCLUSIONS The hydraulic permeability of human nondegenerate anulus fibrosus is direction-dependent (i.e., anisotropic), with the greatest permeability in the radial direction. With disc degeneration, the radial permeability of anulus fibrosus decreases, mainly because of decreased water content, and the axial and circumferential permeability coefficients increase, mainly because of structural change, leading to more isotropic permeability behavior for Grade III discs.
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Affiliation(s)
- W Y Gu
- Department of Biomedical Engineering, University of Miami, Coral Gables, Florida, USA.
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Gu WY, Mao XG, Rawlins BA, Iatridis JC, Foster RJ, Sun DN, Weidenbaum M, Mow VC. Streaming potential of human lumbar anulus fibrosus is anisotropic and affected by disc degeneration. J Biomech 1999; 32:1177-82. [PMID: 10541067 DOI: 10.1016/s0021-9290(99)00118-9] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.9] [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: 11/26/2022]
Abstract
The streaming potential responses of non-degenerate and degenerate human anulus fibrosus were measured in a one-dimensional permeation configuration under static and dynamic loading conditions. The goal of this study was to investigate the influence of the changes in tissue structure and composition on the electrokinetic behavior of intervertebral disc tissues. It was found that the static streaming potential of the anulus fibrosus depended on the degenerative grade of the discs (p = 0.0001) and on the specimen orientation in which the fluid flows (p = 0.0001). For a statically applied pressure of 0.07 MPa, the ratio of streaming potential to applied pressure ranged from 5.3 to 6.9 mV/MPa and was largest for Grade I tissue with axial orientation and lowest for Grade III tissue with circumferential orientation. The dynamic streaming potential responses of anulus fibrosus were sensitive to the degeneration of the disc: the total harmonic distortion factor increased by 108%, from 3.92 +/- 0.66% (mean +/- SD) for Grade I specimens to 8.15 +/- 3.05% for Grades II and III specimens. The alteration of streaming potential reflects the changes in tissue composition and structure with degeneration. To our knowledge, this is the first reported data for the streaming potential of human intervertebral disc tissues. Knowledge of the streaming potential response of the intervertebral disc provides an understanding of potentially important signal transduction mechanisms in the disc and of the etiology of intervertebral disc degeneration.
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Affiliation(s)
- W Y Gu
- Department of Biomedical Engineering, College of Engineering, University of Miami, Coral Gables, FL 33124-0621, USA.
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Abstract
Osmotic pressure loading of articular cartilage has been customarily invoked to be equivalent to mechanical loading. In the literature, this equivalence is defined by the amount of water squeezed from the tissue, i.e. if the amount of water content lost by these two modes of loading are the same, it has been generally regarded that the two loadings are equivalent. This assumption has never been proven. Using the water content lost concept, in this paper, we derived the exact conditions under which an osmotic pressure loading of cartilage can be considered to be equivalent to a mechanical loading. However, the mechanical loading condition satisfying this equivalency criterion, i.e. an isotropic loading delivered via a porous permeable rigid platen uniformly applied all around the specimen, is not practically achievable. Moreover, even if this were achieved experimentally, the interstitial fluid pressure caused by the two loading conditions are not the same. This result has important ramifications for interpretation of experimental data from mechanical stimulations of cartilage explant studies.
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Affiliation(s)
- W M Lai
- Department of Mechanical Engineering, Columbia University, New York, NY, USA
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Gu WY, Lai WM, Mow VC. A mixture theory for charged-hydrated soft tissues containing multi-electrolytes: passive transport and swelling behaviors. J Biomech Eng 1998; 120:169-80. [PMID: 10412377 DOI: 10.1115/1.2798299] [Citation(s) in RCA: 205] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A new mixture theory was developed to model the mechano-electrochemical behaviors of charged-hydrated soft tissues containing multi-electrolytes. The mixture is composed of n + 2 constituents (1 charged solid phase, 1 noncharged solvent phase, and n ion species). Results from this theory show that three types of force are involved in the transport of ions and solvent through such materials: (1) a mechanochemical force (including hydraulic and osmotic pressures); (2) an electrochemical force; and (3) an electrical force. Our results also show that three types of material coefficients are required to characterize the transport rates of these ions and solvent: (1) a hydraulic permeability; (2) mechano-electrochemical coupling coefficients; and (3) an ionic conductance matrix. Specifically, we derived the fundamental governing relationships between these forces and material coefficients to describe such mechano-electrochemical transduction effects as streaming potential, streaming current, diffusion (membrane) potential, electro-osmosis, and anomalous (negative) osmosis. As an example, we showed that the well-known formula for the resting cell membrane potential (Hodgkin and Huxley, 1952a, b) could be derived using our new n + 2 mixture model (a generalized triphasic theory). In general, the n + 2 mixture theory is consistent with and subsumes all previous theories pertaining to specific aspects of charged-hydrated tissues. In addition, our results provided the stress, strain, and fluid velocity fields within a tissue of finite thickness during a one-dimensional steady diffusion process. Numerical results were provided for the exchange of Na+ and Ca++ through the tissue. These numerical results support our hypothesis that tissue fixed charge density (CF) plays a significant role in modulating kinetics of ions and solvent transport through charged-hydrated soft tissues.
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Affiliation(s)
- W Y Gu
- Department of Orthopaedic Surgery, Columbia University, New York, NY 10032, USA
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40
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Abstract
Osmotic flow and ion transport in a one-dimensional steady diffusion process through charged hydrated soft tissues such as articular cartilage were analysed using the triphasic theory (Lai et al., 1991, J. biomech. Engng 113, 245-258). It was found that solvent would flow from the high NaCl concentration side to the low concentration side (i.e. negative osmosis) when the fixed charge density within the tissue (or membrane) separating the two electrolyte (NaCl) solutions was lower than a critical value. The condition for negative osmosis was derived based on a linear version of the triphasic theory. Distributions of ion concentration and strain field within the tissue were calculated numerically. Quantitative results of osmotic flow rates (ordinary and negative osmosis), ion flux and electric potential across the tissue during this diffusion process suggest that the negative osmosis phenomenon is due to the friction between ions and water since they could flow through the tissues at different rates and different directions.
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Affiliation(s)
- W Y Gu
- Department of Orthopaedic Surgery, Columbia University, New York, NY 10032, USA
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Gu WY, Lai WM, Mow VC. Transport of fluid and ions through a porous-permeable charged-hydrated tissue, and streaming potential data on normal bovine articular cartilage. J Biomech 1993; 26:709-23. [PMID: 8514815 DOI: 10.1016/0021-9290(93)90034-c] [Citation(s) in RCA: 114] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Using the triphasic mechano-electrochemical theory [Lai et al., J. biomech. Engng 113, 245-258 (1991)], we analyzed the transport of water and ions through a finite-thickness layer of charged, hydrated soft tissue (e.g. articular cartilage) in a one-dimensional steady permeation experiment. For this problem, we obtained numerically the concentrations of the ions, the strain field and the fluid and ion velocities inside when the specimen is subject to an applied mechanical pressure and/or osmotic pressure across the layer. The relationships giving the dependence of streaming potential and permeability on the negative fixed charge density (FCD) of the tissue were derived analytically for the linear case, and calculated for the nonlinear case. Among the results obtained were: (1) at a fluid pressure difference of 0.1 MPa across the specimen layer, there is a 10% flow-induced compaction at the downstream boundary; (2) the flow-induced compaction causes the FCD to increase and the neutral salt concentration to decrease in the downstream direction; (3) while both ions move downstream, relative to the solvent (water), the anions (Cl-) move with the flow whereas cations (Na+) move against the flow. The difference in ion velocities depends on the FCD, and this difference attained a maximum at a physiological FCD of around 0.2 meq ml-1; (4) the apparent permeability decreases nonlinearly with FCD, and the apparent stiffness of the tissue increases with FCD; and (5) the streaming potential is not a monotonic function of the FCD but rather it has a maximum value within the physiological range of FCD for articular cartilage. Finally, experimental data on streaming potential were obtained from bovine femoral cartilage. These data support the triphasic theoretical prediction of non-monotonicity of streaming potential as a function of the FCD.
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Affiliation(s)
- W Y Gu
- Department of Mechanical Engineering, Columbia University, New York, NY 10032
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