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Guo LP, Wang WR, Liu JP, Wang BM, Zhou L. [Clinical features and lymphocyte subtypes in patients with IgG 4-related diseases]. Zhonghua Nei Ke Za Zhi 2024; 63:394-400. [PMID: 38561285 DOI: 10.3760/cma.j.cn112138-20231103-00291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Objective: To deepen understanding of IgG4-related diseases (RDs), we analyzed the associated lymphocyte subtypes, and explored the pathogenesis and potential immunotherapeutic targets. Methods: Eighty-six patients with IgG4-RDs were enrolled, and their clinical characteristics, peripheral lymphocyte subtypes, and disease course were analyzed. Results: The mean age of the participants was 36-87(62±11) years; 51 were male (59.3%) and 35 were women (40.7%); and 34.9% had a history of allergy. Follow-up lasted 4.8 (0.4, 14.1) months. The most common symptoms were abdominal pain, and submandibular gland and lacrimal gland swelling (each 20.9%). Sixty-five (75.6%) participants had multiple organ involvement, and the most frequently affected organs were the pancreas (52.3%), submandibular gland (51.2%), and lacrimal gland (34.9%). A high eosinophil count; high IgE, IgG, IgG1, and IgG4 concentrations; and low complement C3 and C4 concentrations were present in 18.8% (16/85), 30.0% (24/80), 72.9% (62/85), 58.3% (28/48), 89.5% (77/86), 61.2% (52/85), and 50.0% (42/84), respectively, of the participants. In addition, 64.7% (55/85) were positive for autoantibodies, and the most frequent was anti-nuclear antibody (63.5%). The proportion of CD4+T lymphocytes increased in 25.7% (9/35) of the participants, which was accompanied by an increase in the ratio of CD4+/CD8+T lymphocytes (22.9%, 8/35). Importantly, most participants (90.0%, 18/20) had a high proportion of regulatory T (Treg) cells. High interleukin (IL)-2, IL-6, and IL-10 concentrations were present in 50.0% (11/22), 33.3% (10/30), and 16.7% (5/30), respectively, of the participants. Substantial lymphoplasmacytic infiltration, fibrosis, IgG4-positive plasma cell infiltration, and lymphoid follicle hyperplasia or ectopic formation were present in 79.2% (42/53), 67.9%(36/53), 35.8%(19/53) and 30.2% (16/53), respectively, of the participants. Fifty-three participants with detailed pathologic data were also further evaluated, of whom 24.5% (13/53), 3.8% (2/53), and 67.9% (36/53) had definite, probable, and possible diagnoses; and 3.8% (2/53) could not be diagnosed. Compared with baseline, the percentage of eosinophils and the IgE, IgG, and IgG4 concentrations decreased significantly; and the complement C3 and C4 concentrations had increased significantly after 6 months of treatment (all P<0.05). The IgG4 concentration after 6 months of treatment negatively correlated with that of C4, and positively correlated with the baseline concentration of IgE and the IgG4/IgG ratio. Conclusion: IgG4-RDs are a group of diseases characterized by male predisposition; multiple organ involvement; a high eosinophil count; high IgE, IgG, IgG1, and IgG4 concentrations; and a low C3 concentration. Peripheral CD4+T cells and Treg cells are also more abundant. The diseases can be controlled with glucocorticoids and immunosuppressive drugs in the majority of instances. The IgG4 concentration after 6 months of treatment negatively correlates with the baseline complement C4 concentration and positively correlates with the IgE concentration and IgG4/IgG ratio, which suggests that IgG4/IgG, IgE, and complement should be closely monitored to evaluate disease activity and the efficacy of treatment in such patients.
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Affiliation(s)
- L P Guo
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - W R Wang
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - J P Liu
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - B M Wang
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - L Zhou
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
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Wu JY, Liu X, Wang SN, Jiang EL, Wang BM, Cao HL. [Advances of biological agents in the treatment of gastrointestinal acute graft-versus-host disease]. Zhonghua Nei Ke Za Zhi 2024; 63:107-112. [PMID: 38186127 DOI: 10.3760/cma.j.cn112138-20231004-00179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Affiliation(s)
- J Y Wu
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin 300052, China
| | - X Liu
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin 300052, China
| | - S N Wang
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin 300052, China
| | - E L Jiang
- Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - B M Wang
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin 300052, China
| | - H L Cao
- Department of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin 300052, China
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Huang H, Li HZ, Wang YR, Song Y, Wang BM, Cao HL, Jiang K. [Single hydrogen-methane breath test for the diagnosis of small intestinal bacterial growth]. Zhonghua Nei Ke Za Zhi 2023; 62:1335-1340. [PMID: 37935501 DOI: 10.3760/cma.j.cn112138-20221111-00843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Objective: To investigate the diagnostic value of a single hydrogen-methane breath test (SHMBT) for small intestinal bacterial overgrowth (SIBO). Method: The current investigation was a cross-sectional study. Questionnaires and SHMBTs were administered to 162 patients with gastrointestinal symptoms (case group) and 69 healthy volunteers (control group). Differences in SHMBT results between the two groups were assessed,and cut-off values of CH4 (methane) and H2 (hydrogen) were analyzed via receiver operating characteristic (ROC) curves. Lastly,archived SHMBT data from 2 655 patients with gastrointestinal symptoms (validation set) were used to evaluate the diagnostic value of the SHMBT with respect to SIBO. The Chi-square test,the Mann-Whitney U test,Spearman's Rank correlation analysis,and the Z test were used for statistical analysis. Results: Based on the international recommended diagnostic criteria for SIBO,which are fasting CH4 ≥10 ppm (parts per million) or H2 ≥20 ppm,the SHMBT-positive rate in the case group was significantly higher than that of control group (35.2% vs. 21.7%, χ2=4.08, P=0.043). Levels of CH4 and H2 were higher in the case group than in the control group [CH4: 3(2,7) vs. 3(1,3) ppm, H2: 11(4,22) vs. 10(5,15) ppm],and the difference in CH4 levels was statistically significant (Z=6.22,P=0.001). ROC curves were generated based on whether the subjects had gastrointestinal symptoms. The areas under the ROC curves were 0.633 for CH4 alone,0.531 for H2 alone, and 0.620 for CH4 combined with H2. The cut-off values were fasting CH4≥4 ppm,fasting H2≥13 ppm,and fasting CH4 ≥5 ppm (or CH4≥4 ppm and H2≥24 ppm),respectively. Measuring CH4 alone and CH4 combined with H2 was effective for determining the presence of gastrointestinal symptoms (P<0.05). When CH4 alone or CH4 combined with H2 were used as diagnostic indicators of SIBO, the respective SHMBT-positive rates in the validation set were 34.2% and 30.4%. These rates did not significantly differ from the SIBO-positive rate of 32.0% obtained via the international recommended diagnostic criteria (P>0.05). The specificity of CH4 alone was 79.9%,and the accuracy of CH4 alone was 68.8%. The specificity of CH4 combined with H2 was 85.0%,and the accuracy of CH4 combined with H2 was 71.7%. Conclusion: Rapid one-time determination of CH4 and H2 in exhaled breath may a viable diagnostic method for SIBO, and using CH4 combined with H2 (i.e.,fasting CH4≥5 ppm, or CH4 ≥4 ppm and H2 ≥24 ppm) as cutoff values may be feasible.
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Affiliation(s)
- H Huang
- Department of Gastroenterology,General Hospital,Tianjin Medical University,Tianjin 300052,China
| | - H Z Li
- Department of Gastroenterology,Second Teaching Hospital of Tianjin University of Traditional Chinese Medicine,Tianjin 300150,China
| | - Y R Wang
- Department of Gastroenterology,Tianjin Fourth Central Hospital,Tianjin 300142, China
| | - Y Song
- Department of Gastroenterology,General Hospital,Tianjin Medical University,Tianjin 300052,China
| | - B M Wang
- Department of Gastroenterology,General Hospital,Tianjin Medical University,Tianjin 300052,China
| | - H L Cao
- Department of Gastroenterology,General Hospital,Tianjin Medical University,Tianjin 300052,China
| | - K Jiang
- Department of Gastroenterology,General Hospital,Tianjin Medical University,Tianjin 300052,China
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Liu M, Zhang HX, Zhang L, Zhao JW, Zhou L, Wang BM. [Inhibition of receptor-interacting protein 3 improves experimental autoimmune hepatitis]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:1231-1236. [PMID: 36891703 DOI: 10.3760/cma.j.cn501113-20200819-00466] [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: 03/10/2023]
Abstract
Objective: To evaluate the potential of receptor-interacting protein 3 (RIP3) as a therapeutic target for autoimmune hepatitis (AIH). Methods: Immunofluorescence assay was used to observe the activated expression levels of RIP3 and its downstream signal mixed lineage protein kinase domain-like protein (MLKL) in the liver tissues of patients with AIH and hepatic cyst. Concanavalin A (ConA) was injected into the tail vein to induce acute immune-mediated hepatitis in mice. Intervention was performed by intraperitoneal injection of RIP3 inhibitor GSK872 or solvent carrier. Peripheral blood and liver tissues were collected. Serum transaminases level, qPCR and flow cytometry were analyzed. The intergroup comparison was performed with an independent sample t-test. Results: The expression level of p-RIP3 (the activated forms of RIP3) and phosphorylated p-MLKL (MLKL after phosphorylation) downstream signal were significantly higher in the liver tissue of AIH patients than those of controls. Compared with the control group, the expression levels of RIP3 and MLKL mRNA were significantly increased in the liver tissue of AIH patients (relative expression levels 3.28±0.29 vs. 0.98±0.09, 4.55±0.51 vs. 1.06±0.11), and the differences were statistically significant (t=6.71 and 6.77, respectively, and P<0.01). The expression levels of RIP3 and MLKL mRNA were significantly higher in the mice liver tissue of ConA-induced immune hepatitis than those in the control group (relative expression levels 2.35±0.09 vs. 0.89±0.11,2.77±0.22 vs. 0.73±0.16,t=10.4,6.33, P<0.01). RIP3 inhibitor GSK872 had significantly attenuated ConA-induced immune liver injury and inhibited the expression of tumor necrosis factor-α, interleukin-6, interleukin-1β and NLRP3 in liver. Compared with the control group, the proportions of CD45+F4/80+ macrophages, CD4+ IL-17+ Th17 cells, CD4+ CD25+ regulatory T (Treg) cells and CD11b+ Gr-1+ myeloid derived suppressor cells (MDSCs) were significantly increased in the liver of ConA + Vehicle group. Compared with ConA + Vehicle group, the proportion of CD45+F4/80+ macrophages and CD4+ IL-17+ Th17 cells were significantly decreased, while the proportion of CD4+ CD25+Treg cells and CD11b+ Gr-1+ MDSCs with immunomodulatory functions were significantly increased in mice liver of ConA+GSK872 group. Conclusion: AIH patients and ConA-induced immune hepatitis mice have activated RIP3 signal in liver tissues. Inhibition of RIP3 reduces the expression and proportion of proinflammatory factors and cells, and promotes the accumulation of CD4+ CD25+ Treg cells and CD11b+ Gr-1+ MDSCs with immunomodulatory functions in the liver of mice with immune hepatitis, thereby alleviating liver inflammation and injury. Therefore, the inhibition of RIP3 is expected to be a new approach for the treatment of AIH.
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Affiliation(s)
- M Liu
- Department of Gastroenterology and Hepatology, General Hospital of Tianjin Medical University, Tianjin 300052, China
| | - H X Zhang
- Department of Gastroenterology and Hepatology, General Hospital of Tianjin Medical University, Tianjin 300052, China
| | - L Zhang
- Department of Gastroenterology and Hepatology, General Hospital of Tianjin Medical University, Tianjin 300052, China
| | - J W Zhao
- Department of Gastroenterology and Hepatology, General Hospital of Tianjin Medical University, Tianjin 300052, China
| | - L Zhou
- Department of Gastroenterology and Hepatology, General Hospital of Tianjin Medical University, Tianjin 300052, China
| | - B M Wang
- Department of Gastroenterology and Hepatology, General Hospital of Tianjin Medical University, Tianjin 300052, China
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Du XH, Wang BM, Zhang BY, Liu X, Tian ZC, Yao WT. [Role of CT and MRI image fusion and computer assisted simulation technique in guiding type Ⅲ and Ⅳ primary pelvic sarcoma surgeries]. Zhonghua Wai Ke Za Zhi 2022; 60:567-572. [PMID: 35658344 DOI: 10.3760/cma.j.cn112139-20220127-00040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To explore the possible clinical benefits of CT/MRI image fusion and computer-assisted simulation techniques in guiding type Ⅲ and Ⅳ primary pelvic bone tumor surgeries. Methods: The clinic data of primary bone sarcomas patients treated at Department of Bone and Soft Tissue,Zhenghzhou University Affiliated Cancer Hospital from January 2019 to December 2021 were retrospectively analyzed. Based on whether the CT and MRI image fusion technique was utilized for tumor evaluation and surgical planning,the patients were divided into image fusion group (n=21) or control group (n=27). There were 7 male and 14 female patients included in the image fusion group, with the age of (37.0±10.4) years(range: 18 to 67 years). In the control group, there were 10 males and 17 females with the age of (39.7±15.2) years (range: 16 to 65 years). Both groups included osteosarcoma,chondrosarcoma and undifferentiated polymorphic sarcoma as the pathological diagnosis. Clinical information such as gender,age,pathological diagnosis,location of disease,and metastasis at diagnosis were collected. Surgical related information such as duration of surgery,blood loss,surgical margin,and wound complications were also obtained. Periodical follow-ups every 3 months were performed for all patients to monitor the status of local recurrence,distant metastasis,and survival information. Independent t test and χ² test were used for data comparison between groups. Results: Significant reduced duration of surgery was observed in the image fusion group in comparison with control group both in type Ⅲ and Ⅳ surgeries ((144.0±31.6)min vs. (248.2±56) min,t=-8.084, P<0.01); (173.0±42.0)min vs. (306.1±62.0)min, t=-4.518, P<0.01). Blood loss was significantly reduced in the image fusion group compared with the control group ((484.8±226.3)ml vs. (836.1±359.8)ml,t=-4.130, P<0.01). In addition, significant lower ratio of R1 margin and recurrence rates of type Ⅲ and Ⅳ surgeries were found in the image fusion group comparing with the control group (4.8%(1/21) vs. 22.2%(6/27), χ²=4.214, P=0.040; 4.8%(1/21) vs. 22.2%(6/27), χ²=4.214, P=0.040).In the image fusion group, there were 3 cases of incision infection, 1 of which underwent secondary debridement.And in thecontrol group there were 7 cases of incision infection, 3 of which underwent secondary debridement. There was no significant difference in the incidence of complications between the two groups (14.2%(3/21)vs. 25.9%(7/27), χ²=0.645, P=0.422). Up to the last follow-up, 1 patient died in the image fusion group and 2 patients died in the control group, the difference was not statistically significant (χ²=1.885, P=0.220). Conclusion: Compared with the traditional operation,the image fusion technique can significantly reduce the duration of surgery,blood loss and lower the recurrence rate by achieving better surgical margins.
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Affiliation(s)
- X H Du
- Department of Bone and Soft Tissue,Zhenghzhou University Affiliated Cancer Hospital,Henan Cancer Hospital,Key Laboratory for Digital Assessment of Spinal-pelvic Tumor and Surgical Aid Tools Design (Zhengzhou),Key Laboratory for Perioperative Digital Assessment of Bone Tumors (Henan),Zhengzhou 450003, China
| | - B M Wang
- Department of Bone and Soft Tissue,Zhenghzhou University Affiliated Cancer Hospital,Henan Cancer Hospital,Key Laboratory for Digital Assessment of Spinal-pelvic Tumor and Surgical Aid Tools Design (Zhengzhou),Key Laboratory for Perioperative Digital Assessment of Bone Tumors (Henan),Zhengzhou 450003, China
| | - B Y Zhang
- Department of Bone and Soft Tissue,Zhenghzhou University Affiliated Cancer Hospital,Henan Cancer Hospital,Key Laboratory for Digital Assessment of Spinal-pelvic Tumor and Surgical Aid Tools Design (Zhengzhou),Key Laboratory for Perioperative Digital Assessment of Bone Tumors (Henan),Zhengzhou 450003, China
| | - X Liu
- Department of Bone and Soft Tissue,Zhenghzhou University Affiliated Cancer Hospital,Henan Cancer Hospital,Key Laboratory for Digital Assessment of Spinal-pelvic Tumor and Surgical Aid Tools Design (Zhengzhou),Key Laboratory for Perioperative Digital Assessment of Bone Tumors (Henan),Zhengzhou 450003, China
| | - Z C Tian
- Department of Bone and Soft Tissue,Zhenghzhou University Affiliated Cancer Hospital,Henan Cancer Hospital,Key Laboratory for Digital Assessment of Spinal-pelvic Tumor and Surgical Aid Tools Design (Zhengzhou),Key Laboratory for Perioperative Digital Assessment of Bone Tumors (Henan),Zhengzhou 450003, China
| | - W T Yao
- Department of Bone and Soft Tissue,Zhenghzhou University Affiliated Cancer Hospital,Henan Cancer Hospital,Key Laboratory for Digital Assessment of Spinal-pelvic Tumor and Surgical Aid Tools Design (Zhengzhou),Key Laboratory for Perioperative Digital Assessment of Bone Tumors (Henan),Zhengzhou 450003, China
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Wang BM, Hu G, Hu LH, Chen D, An Y, Li C, Jia G, Hu GP. [Research progress of micronucleus visualization analysis and artificial intelligence detection strategy]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:391-396. [PMID: 35381665 DOI: 10.3760/cma.j.cn112150-20210408-00340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The micronucleomics test can comprehensively display a variety of harmful endpoints, such as DNA damage and repair, chromosome breakage or loss and cell growth inhibition, with fast, simple and economical feature. Micronucleomics is not only widely used in the comprehensive assessment of the types and modes of genetic action of exogenous chemicals (such as drugs, food additives, cosmetics, environmental pollutants, etc.), but also plays an important role in the screening and risk assessment of cancer population at high risk. However, the traditional micronucleomics image counting method has the characteristics of time-consuming, low accuracy, and high cost, which cannot meet the current analysis requirements of large-scale, multi-index, rapidity, high precision and visualization. In recent years, with the rapid development of the era of precision medicine based on big data, visualized analysis of new micronucleomics based on machine learning and detection strategies based on deep learning have shown a good application prospect. This review, based on the application value of micronucleomics, systematically compares the traditional and new artificial intelligence counting of micronucleus images, and discusses the future direction of micronucleus image detection.
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Affiliation(s)
- B M Wang
- School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China School of Medical Science and Engineering, Beihang University, Beijing 100191, China
| | - G Hu
- School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China School of Medical Science and Engineering, Beihang University, Beijing 100191, China
| | - L H Hu
- Peking University First Hospital, Beijing 100034, China
| | - D Chen
- School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China School of Medical Science and Engineering, Beihang University, Beijing 100191, China
| | - Y An
- High-tech Innovation Center of Big Data Precision Medicine, Beihang University, Beijing 100191, China
| | - C Li
- School of Medical Science and Engineering, Beihang University, Beijing 100191, China High-tech Innovation Center of Big Data Precision Medicine, Beihang University, Beijing 100191, China
| | - G Jia
- School of Public Health, Peking University, Beijing 100191, China
| | - G P Hu
- School of Medical Science and Engineering, Beihang University, Beijing 100191, China High-tech Innovation Center of Big Data Precision Medicine, Beihang University, Beijing 100191, China
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Liu XT, Zhao W, Chen X, Wang BM. [Diagnosis and treatment of achalasia of cardia]. Zhonghua Nei Ke Za Zhi 2022; 61:214-218. [PMID: 35090259 DOI: 10.3760/cma.j.cn112138-20211214-00884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- X T Liu
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - W Zhao
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - X Chen
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - B M Wang
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
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Gao J, Cao HL, Chen C, Wang BM, Zhang Q. [Research progress of obstructive sleep apnea syndrome on colorectal cancer]. Zhonghua Jie He He Hu Xi Za Zhi 2021; 44:1004-1008. [PMID: 34758527 DOI: 10.3760/cma.j.cn112147-20210305-00148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Zhao W, Zhang LY, Wang BM. [The role and mechanism of interstitial cells of Cajal in the pathogenesis of achalasia]. Zhonghua Nei Ke Za Zhi 2021; 60:1010-1012. [PMID: 34689526 DOI: 10.3760/cma.j.cn112138-20210205-00102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- W Zhao
- Department of Gastroenterology, General Hospital of Tianjin Medical University, Tianjin 300052, China
| | - L Y Zhang
- Department of Gastroenterology, General Hospital of Tianjin Medical University, Tianjin 300052, China
| | - B M Wang
- Department of Gastroenterology, General Hospital of Tianjin Medical University, Tianjin 300052, China
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Yang YL, Li QH, Zhang Q, Jia HL, Wang BM, Dong JL, Zhou DS, Wang XM, Li LX. Treatment of Chronic Anterior Shoulder Dislocation by Coracoid Osteotomy with or without Bristow-Latarjet Procedure. Orthop Surg 2020; 12:1478-1488. [PMID: 32975042 PMCID: PMC7670138 DOI: 10.1111/os.12776] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/09/2020] [Accepted: 07/14/2020] [Indexed: 11/27/2022] Open
Abstract
Objective To investigate the clinical efficacy and outcomes of the coracoid osteotomy with or without Bristow–Latarjet procedures in the treatment of chronic anterior shoulder dislocation (CASD). Methods Between January 2013 and January 2019, 20 shoulders of 18 patients who were diagnosed with chronic anterior dislocation and underwent open reduction in our trauma center were retrospectively studied. Open coracoid osteotomy with Bristow–Latarjet procedures were performed on 16 shoulders and open coracoid osteotomy without Bristow–Latarjet procedures were performed on four shoulders. Open coracoid osteotomy with or without Bristow–Latarjet procedures were chosen on the basis of the stability of the shoulder after reduction. Outcomes were assessed preoperatively and postoperatively with the visual analog scale (VAS) for pain, the American Shoulder and Elbow Surgeons (ASES) score, the University of California Los Angeles (UCLA) shoulder rating scale, and the range of motion (ROM) for shoulder activity. Results There were three males and 15 females with an average age of 60.94 ± 2.69 years. The time between dislocation and treatment ranged from 21 to 240 days with an average of 73.3 ± 14.4 days. All patients were available for a mean follow‐up of 15.2 ± 4.3 months. No procedure‐related death or incision‐related superficial or deep tissue infection was identified in all cases. No iatrogenic neurovascular injuries or fractures were found in this study. At the time of 12 months follow‐up, the range of motion and the shoulder functional evaluation (VAS [P < 0.001], ASES [P < 0.001], and UCLA score [P < 0.001]) in patients who underwent Bristow–Latarjet procedures were significantly improved. Subluxation after surgical procedure was found and confirmed in one patient and this patient refused to undergo revision surgery. According to the Samilson and Prieto classification system, 16 shoulders were assessed as grade 0, three shoulders were grade 1, one shoulder was grade 2. Conclusions Coracoid osteotomy with or without Bristow–Latarjet procedure yielded an acceptable clinical result in this study. This method has the advantages of enlarging the exposure of surgical field, assisting reduction of shoulder, and convenient conversion to Bristow–Latarjet procedure. It is an efficient and reliable method for treatment of chronic anterior shoulder dislocation. A 69‐year‐old woman diagnosed with right chronic anterior shoulder dislocation with large Hill–Sachs lesion. The latarjet procedure with remplissage technique was applied for this patient.
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Affiliation(s)
- Yong-Liang Yang
- Department of Traumatic Orthopedics, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, China
| | - Qing-Hu Li
- Department of Traumatic Orthopedics, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, China
| | - Qi Zhang
- Department of surgery, The Third People's Hospital of Lixia County, Jinan, China
| | - Hong-Lei Jia
- Department of Traumatic Orthopedics, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, China
| | - Bo-Min Wang
- Department of Traumatic Orthopedics, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, China
| | - Jin-Lei Dong
- Department of Traumatic Orthopedics, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, China
| | - Dong-Sheng Zhou
- Department of Traumatic Orthopedics, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, China
| | - Xiao-Mei Wang
- Nuclear Medicine Department, Jinan Central Hospital Affiliated to Shandong University, Jinan, China
| | - Lian-Xin Li
- Department of Traumatic Orthopedics, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, China
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Zhang H, Maimaitiaili M, Liu Y, Wang XH, Wang BM, Cao HL. [New insight into the pathogenesis and treatment of juvenile polyposis syndrome]. Zhonghua Er Ke Za Zhi 2020; 58:432-435. [PMID: 32392966 DOI: 10.3760/cma.j.cn112140-20190827-00544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- H Zhang
- Department of Emergency, Tianjin Children's Hospital,Tianjin 300074, China
| | - Maimaitiabudu Maimaitiaili
- Department of Gastroenterology and Hepatology, Hotan District People's Hospital, Xinjiang Uygur Autonomous Region, Hotan 848000, China
| | - Y Liu
- Department of Gastroenterology and Hepatology, Tianjin Third Central Hospital, Tianjin 300170, China
| | - X H Wang
- Department of Gastroenterology and Hepatology, Hotan District People's Hospital, Xinjiang Uygur Autonomous Region, Hotan 848000, China
| | - B M Wang
- Department of Gastroenterology, General Hospital, Tianjin Medical University, Tianjin 300052, China
| | - H L Cao
- Department of Gastroenterology, General Hospital, Tianjin Medical University, Tianjin 300052, China
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Li YN, Zhou L, Zhang J, Wang Y, Wang XY, Guo LP, Li SQ, Wang BM. [Characteristics of initial diagnosis in autoimmune liver disease: an 18-year, retrospective single-center study]. Zhonghua Nei Ke Za Zhi 2019; 58:366-371. [PMID: 31060145 DOI: 10.3760/cma.j.issn.0578-1426.2019.05.007] [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: 06/09/2023]
Abstract
Objective: To analyze the chorological changes of diagnosis in patients with autoimmune liver disease (AILD) and related factors for early diagnosis. Methods: A total of 581 patients with age ranged from 16 to 81 were retrospectively analyzed, who were admitted to Tianjin Medical University General Hospital with AILD during January 2000 to December 2017. Age at diagnosis, diagnostic method and cirrhosis at diagnosis were compared in different groups according to admission period as 2000-2005, 2006-2011, 2012-2017. Results: The diagnostic rate of AILD showed an upward trend during the past near two decades. The proportion of AILD patients diagnosed via health examination was increasing year by year mainly by elevated transaminases (P<0.001). The mean age at diagnosis in our AILD patients were younger at present, especially in men (P=0.044). The proportion of cirrhosis at diagnosis was gradually reduced in three different periods respectively [77.78%(21/27), 41.58% (79/190), 25.00%(91/364), P<0.001], which were coincident in patients with autoimmune hepatitis (AIH) and primary biliary cirrhosis (PBC) (P<0.001). The shrinking trend of cirrhosis at diagnosis was significantly correlated with the increasing application of health examination (r=-0.549, P<0.001). Conclusions: Extensive application of health examination expands the diagnostic rate of AILD. During the past 18 years, more young patients are diagnosed with AILD. The proportion of severe cases such as cirrhosis at diagnosis is decreasing. Screening of immunological examinations in patients with abnormal transaminases is needed and critical to the early diagnosis of asymptomatic AILD.
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Affiliation(s)
- Y N Li
- Department of Gastroenterology and Hepotology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - L Zhou
- Department of Gastroenterology and Hepotology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - J Zhang
- Department of Gastroenterology and Hepotology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Y Wang
- Department of Gastroenterology and Hepotology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - X Y Wang
- Department of Gastroenterology and Hepotology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - L P Guo
- Department of Gastroenterology and Hepotology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - S Q Li
- Health Management Center, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - B M Wang
- Department of Gastroenterology and Hepotology, Tianjin Medical University General Hospital, Tianjin 300052, China
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Guo LP, Zhou L, Li HX, Zhang J, Wang BM. [The study of liver macrophages polarization in patients with autoimmune hepatitis]. Zhonghua Nei Ke Za Zhi 2019; 56:763-765. [PMID: 29036959 DOI: 10.3760/cma.j.issn.0578-1426.2017.10.011] [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
To explore the functional phenotype of liver macrophages in patients with autoimmune hepatitis (AIH). Compared with patients with nonalcoholic fatty liver disease (NAFLD) and chronic hepatitis B (CHB), the absolute CD(68)(+) cell count in patients with AIH was significantly higher (all P<0.05). It was positively correlated with ALT and IgG levels (the correlation coefficients 0.600 and 0.700, P=0.285 and 0.188 respectively). Additionally, compared with patients with NAFLD, the absolute iNOS positive cell count in patients with AIH and CHB were significantly higher (all P<0.05). The expression of TNFα, iNOS and IL-1β in patients with AIH and CHB were significantly higher than in patients with NAFLD (all P<0.05). Interestingly, compared with patients with AIH and CHB, the absolute CD(206)(+) cell count in patients with NAFLD were significantly higher (all P<0.05). CD(206) expression in patients with NAFLD was higher than patients with AIH and CHB, but with no statistical significance. M1 type macrophages over-expressed and played a major role in the inflammatory reaction and liver injury in patients with AIH.
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Affiliation(s)
| | | | | | | | - B M Wang
- Department of Gastroenterology and Hepatology, General Hospital of Tianjin Medical University, Tianjin 300052, China
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Zhou Z, Jing Y, Ran Y, Zhao J, Zhou L, Wang BM. [Role of Rac1 signaling pathway of azathioprine and peptidoglycan in the regulation of monocyte-macrophage apoptosis in Crohn's disease]. Zhonghua Nei Ke Za Zhi 2018; 57:279-284. [PMID: 29614587 DOI: 10.3760/cma.j.issn.0578-1426.2018.04.010] [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 evaluate the changes of macrophages and expression of Rac1 in the inflammatory site of Crohn's disease, and to investigate the effects of 6-thioguanine (6-TG) and peptidoglycan on apoptosis of human peripheral blood monocyte-macrophage by regulating Rac1 signaling pathway. Methods: Ten patients with Crohn's disease and eight healthy controls diagnosed were enrolled at Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital from January 2013 to January 2014. The number of macrophages, apoptosis and expression of Rac1 in the inflammation sites and non-inflammation sites of intestinal mucosa were detected in both patients and controls. Peripheral blood mononuclear cells (PBMCs) were sorted by CD14 immunomagnetic beads. The apoptosis of monocytes, expression of Rac1 and related apoptosis signaling molecules were detected in patients treated with peptidoglycan, 6-TG and Rac1 inhibitor NSC23766 and another 15 healthy donors. Results: The number of macrophages and apoptotic cells significantly increased in the inflammatory group of Crohn's disease patients compared with the non-inflammatory group. The expression of PAK1, downstream molecular of Rac1 signaling pathway of macrophages was also significantly higher in the inflammatory group of Crohn's disease patients than that in healthy controls and non-inflammatory group. Compared with control group, anti-apoptotic signals (NF-κB, Bcl-xL and STAT-3) in PBMCs increased in the peptidoglycan group, while slightly decreased in 6-TG group. 6-TG and NSC23766 significantly promoted peptidoglycan-related anti-apoptosis [peptidoglycan group (8.6±3.7)%, peptidoglycan+ 6-TG group (42.0±2.7)%, peptidoglycan+ NSC23766 group (58.5±6.9)%, P<0.05]. Conclusions: Peptidoglycan plays a role in the pathogenesis of Crohn's disease by recruiting macrophages. However, 6-TG inhibits peptidoglycan-induced activation of Rac1 signaling pathway leading to macrophage apoptosis.
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Affiliation(s)
| | | | | | | | | | - B M Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin 300052, China
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Wang Y, Li YN, Zhang J, Wang BM, Zhou L. [Advances in clinical differentiation between immunological and drug-induced liver injury]. Zhonghua Gan Zang Bing Za Zhi 2017; 25:717-720. [PMID: 29108197 DOI: 10.3760/cma.j.issn.1007-3418.2017.09.014] [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
The differentiation between autoimmune hepatitis (AIH) and drug-induced liver injury (DILI) is a difficult task in clinical practice. Some AIH patients had a medication history before disease onset, and some DILI patients may have positive serum antibody. In addition, these two groups of patients have similar clinical symptoms, serological examination results, and liver histopathology, which lead to the difficulties in differentiation. However, correct differential diagnosis is of great significance in making clinical treatment decisions and preventing liver cirrhosis. Therefore, it is necessary to investigate the association between immunological and drug-induced liver injury from the perspectives of pathogenesis, similarities and differences in clinical features, serological examination results, and histological changes, prospects of new biomarkers in differentiation, and the significance of hormone therapy and clinical follow-up in differential diagnosis and treatment, in order to provide a reference for clinical decision-making and research in future.
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Affiliation(s)
- Y Wang
- Department of Gastroenterology and Hepotology, Tianjin Medical University General Hospital, Tianjin 300052, China
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Wang BM, Yao SZ. [Enhancing the quality of screening colonoscopy to improve the early detection for colorectal cancer]. Zhonghua Nei Ke Za Zhi 2017; 56:564-566. [PMID: 28789487 DOI: 10.3760/cma.j.issn.0578-1426.2017.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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Li WW, Sun P, Chen DD, Wang WQ, Jiao GH, Wang YJ, Zhou L, Wang BM, Zhang J. [Preventive and therapeutic effects of rapamycin against autoimmune hepatitis and liver fibrosis and possible mechanisms]. Zhonghua Gan Zang Bing Za Zhi 2017; 24:368-74. [PMID: 27470891 DOI: 10.3760/cma.j.issn.1007-3418.2016.05.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the preventive and therapeutic effects of rapamycin (RAPA) on autoimmune hepatitis and liver fibrosis induced by concanavalin A (ConA) and possible mechanisms. METHODS Female C57BL/6 mice aged 8 weeks were randomly divided into normal control group, ConA model group, and ConA+RAPA treatment group. The serum levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were measured; hematoxylin-eosin and Masson staining and Knodell HAI and Ishak scoring systems were used to evaluate the degrees of liver inflammation and fibrosis. Gradient centrifugation was used to separate mononuclear cells, flow cytometry was used to measure CD4(+)/CD8(+) ratio, and intracellular cytokine staining was performed to measure the levels of interferon-γ (IFN-γ), interleukin-4 (IL-4), interleukin-10 (IL-10), and transforming growth factor β (TGF-β) in immune cells. The t-test was used for data comparison between groups. RESULTS The RAPA treatment group showed a significant reduction in serum ALT level compared with the ConA model group (P < 0.05). Liver inflammatory injury was reduced significantly, and there was no obvious fibrous tissue proliferation. The level of TGF-β in mononuclear cells was reduced significantly, and the treatment group had a significantly lower level of TGF-β than the model group (8.91%±1.25% vs 16.65%±2.05%, P < 0.05). The proportions of CD4(+) and CD8(+)T cells in the liver were reduced, and the treatment group had significantly lower proportions of CD4(+) and CD8(+)T cells than the model group (proportion of CD4(+)T cells: 4.09%±1.20% vs 8.91%±0.69%, P < 0.05; proportion of CD8(+)T cells: 3.28%±0.66% vs 9.68%±1.46%, P < 0.05). The proportion of Th1 cells was reduced, and the treatment group had a significantly lower proportion of Th1 cells than the model group (1.02%±0.06% vs 2.83%±0.21%, P < 0.05); the proportions of Th3 and Tr1 regulatory T cells were increased, and the treatment group had significantly higher proportions of Th3 and Tr1 regulatory T cells than the model group (proportion of Th3 regulatory T cells: 59.53%±9.82% vs 47.13%±4.79%, P < 0.05; proportion of Tr1 regulatory T cells: 10.63%±2.27% vs 7.09%±1.66%, P < 0.05), but the proportion of Th2 cells showed no significant difference between the two groups (P > 0.05). CONCLUSION RAPA can promote the differentiation of Th3/Tr1 cells, reduce the expression of TGF-β in mononuclear cells, slow down the progression of chronic hepatitis induced by ConA into liver fibrosis, and thus prevent liver fibrosis.
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Affiliation(s)
- W W Li
- Departments of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin 300052, China
| | - P Sun
- Departments of General Surgery, General Hospital, Tianjin Medical University, Tianjin 300052, China
| | - D D Chen
- Huai'an First People's Hospital, Nanjing Medical University, Huai'an 223300, China
| | - W Q Wang
- Departments of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin 300052, China
| | - G H Jiao
- Departments of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin 300052, China
| | - Y J Wang
- Departments of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin 300052, China
| | - L Zhou
- Departments of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin 300052, China
| | - B M Wang
- Departments of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin 300052, China
| | - J Zhang
- Departments of Gastroenterology and Hepatology, General Hospital, Tianjin Medical University, Tianjin 300052, China
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Zhang J, Jing Y, Li YN, Zhou L, Wang BM. [Programmed necrosis mediated by receptor-interacting protein 3: a new target for liver disease research]. Zhonghua Gan Zang Bing Za Zhi 2016; 24:716-720. [PMID: 27788734 DOI: 10.3760/cma.j.issn.1007-3418.2016.09.018] [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: 11/05/2022]
Abstract
Hepatocyte death mainly includes apoptosis and necrosis and is a critical process in the pathophysiological mechanism of liver injury caused by various reasons. Recent studies have shown that key regulatory molecules in the inhibition of apoptosis such as caspase cannot be used as targets for inhibiting disease progression in clinical practice. In recent years, programmed necrosis mediated by receptor-interacting protein 3(RIP3)becomes a new hot research topic. It not only plays an important role in inducing inflammatory response, but also is closely regulated by intracellular signal factors, and it is a type of active cell death which can be interfered with. Compared with apoptosis, programmed necrosis is accompanied by the release of various inflammatory factors, which significantly affects local immune microenvironment. RIP3-mediated programmed necrosis has been taken seriously in many diseases. Although its mechanism of action in liver disease remains unclear, the results of recent studies confirmed its important role in the development of liver disease. This article reviews the research advances in the role of RIP3-mediated programmed necrosis signaling pathway in liver disease of various causes and investigates the possibility of RIP3-mediated programmed necrosis as a new target in the treatment of liver disease.
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Affiliation(s)
- J Zhang
- Department of Gastroenterology and Hepatology. Tianjin Medical University General Hospital, Tianjin 300052, China
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Shang T, Zhan QF, Ma L, Yang HL, Zuo ZH, Xie YL, Li HH, Liu LP, Wang BM, Wu YH, Zhang S, Li RW. Pure spin-Hall magnetoresistance in Rh/Y3Fe5O12 hybrid. Sci Rep 2015; 5:17734. [PMID: 26639108 PMCID: PMC4671003 DOI: 10.1038/srep17734] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 11/05/2015] [Indexed: 11/09/2022] Open
Abstract
We report an investigation of anisotropic magnetoresistance (AMR) and anomalous Hall resistance (AHR) of Rh and Pt thin films sputtered on epitaxial Y3Fe5O12 (YIG) ferromagnetic insulator films. For the Pt/YIG hybrid, large spin-Hall magne toresistance (SMR) along with a sizable conventional anisotropic magnetoresistance (CAMR) and a nontrivial temperature dependence of AHR were observed in the temperature range of 5–300 K. In contrast, a reduced SMR with negligible CAMR and AHR was found in Rh/YIG hybrid. Since CAMR and AHR are characteristics for all ferromagnetic metals, our results suggest that the Pt is likely magnetized by YIG due to the magnetic proximity effect (MPE) while Rh remains free of MPE. Thus the Rh/YIG hybrid could be an ideal model system to explore physics and devices associated with pure spin current.
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Affiliation(s)
- T Shang
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - Q F Zhan
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - L Ma
- Department of Physics, Tongji University, Shanghai, 200092, P. R. China
| | - H L Yang
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - Z H Zuo
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - Y L Xie
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - H H Li
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - L P Liu
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - B M Wang
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - Y H Wu
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3 117583, Singapore
| | - S Zhang
- Department of Physics, University of Arizona, Tucson, Arizona 85721, USA
| | - Run-Wei Li
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
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Wang YM, Ge XZ, Wang WQ, Wang T, Cao HL, Wang BL, Wang BM. Lactobacillus rhamnosus GG supernatant upregulates serotonin transporter expression in intestinal epithelial cells and mice intestinal tissues. Neurogastroenterol Motil 2015; 27:1239-48. [PMID: 26088715 DOI: 10.1111/nmo.12615] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2014] [Accepted: 05/12/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND The role that probiotics play in relieving irritable bowel syndrome (IBS) has been demonstrated; however, the mechanism by which IBS is affected remains unclear. In this study, serotonin transporter (SERT) mRNA and serotonin transporter protein (SERT-P) levels in HT-29, Caco-2 cells, and mice intestinal tissues were examined after treatment with Lactobacillus rhamnosus GG supernatant (LGG-s). METHODS HT-29 and Caco-2 cells were treated with different concentrations of LGG-s for 12 and 24 h and C57BL/6 mice received supplements of different concentrations for 4 weeks. SERT mRNA and SERT-P levels were detected by real-time PCR and Western blotting. KEY RESULTS SERT mRNA and SERT-P levels in HT-29 and Caco-2 cells were higher than those in the control 24 h after treatment. Undiluted LGG-s upregulated SERT mRNA levels by 9.4-fold in the first week, which dropped in the second week. The double-diluted LGG-s upregulated SERT mRNA by 2.07-fold in the first week; levels dropped to 1.75-fold within the second week and under base expression levels by the third week, while they again climbed to 1.56-fold in the fourth week. The triple-diluted LGG-s could not upregulate SERT mRNA expression until the end of the fourth week. The SERT-P levels in the double-diluted LGG-s group were higher than that in the control but fluctuated with time. SERT-P levels in the triple-diluted LGG-s were higher than that in the control in the last 2 weeks and increased with time. CONCLUSIONS & INFERENCES LGG-s can upregulate SERT mRNA and SERT-P levels in intestinal epithelial cells and mice intestinal tissues.
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Affiliation(s)
- Y M Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China
| | - X Z Ge
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China
| | - W Q Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China
| | - T Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China
| | - H L Cao
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China
| | - B L Wang
- Key Research Laboratory of Hormone and Development Affiliated to the Ministry of Health, Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - B M Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China
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Lu CH, Li YY, Wang HX, Wang BM, Shen YM. A new phenoxazine derivative isolated from marine sediment actinomycetes, Nocardiopsis sp. 236. Drug Discov Ther 2013; 7:101-104. [PMID: 23917857] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
During screening of marine actinomycetes for anti-mycobacterial activity, a new phenoxazine derivative (1) was isolated, along with 6-phenazinediol (2), 6-methoxy-1-phenazinol (3), nocardamin (4), and 3-pyridinecarboxylic acid (5), from a culture of Nocardiopsis sp. 236 collected from the west Pacific. The chemical structure of 1 was established on the basis of 1D-, 2D-NMR, and HRQ-TOF MS data. All compounds were evaluated for their anti-mycobacterial activity in vitro, and only compounds 2 and 3 exhibited weak activity.
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Affiliation(s)
- C H Lu
- School of Pharmaceutical Sciences, Shandong University, Ji'nan, Shandong, China
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Wang YM, Chang Y, Chang YY, Cheng J, Li J, Wang T, Zhang QY, Liang DC, Sun B, Wang BM. Serotonin transporter gene promoter region polymorphisms and serotonin transporter expression in the colonic mucosa of irritable bowel syndrome patients. Neurogastroenterol Motil 2012; 24:560-5, e254-5. [PMID: 22435794 DOI: 10.1111/j.1365-2982.2012.01902.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND The role of serotonin transporter (SERT) gene polymorphism in irritable bowel syndrome (IBS) has been demonstrated. However, the expression of SERT mRNA and proteins in the colonic mucosa with different 5-HTT gene-linked polymorphic region (5-HTTLPR) genotypes remains unknown. We examined SERT mRNA and protein levels in colon biopsies from patients with different 5-HTTLPR genotypes and evaluated the links between the polymorphism and the expression levels. METHODS Two hundred and fifty-four patients with IBS and 120 healthy subjects were studied. DNA samples were extracted from peripheral blood and genotyped by polymerase chain reaction (PCR). SERT mRNA and protein levels were evaluated by quantitative real time PCR and western blotting. The promoter efficiency of the serotonin transporter promoter (SERT-P) was evaluated with luciferase reporter system. KEY RESULTS The frequency of the L/L genotype in C-IBS group was significantly higher than that in the control and D-IBS. However, the S/S genotype in D-IBS was significantly higher than that in C-IBS. The transcriptional efficiency of the L/L genotype was significantly higher than that in the L/S and S/S genotype. Patients with the L/L genotype demonstrated increased production of the SERT protein when compared with L/S and S/S patients. The l variant increased SERT promoter activity by 2.43-fold when compared with the s variant. CONCLUSIONS & INFERENCES Polymorphism in the promoter region of the SERT gene can influence the expression of SERT mRNA and the levels of the SERT protein in the colonic mucosa, thereby playing a key role in motility-related symptoms of IBS patients.
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Affiliation(s)
- Y M Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University Hospital, Tianjin, China
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Wang BM, Liu Y, Ren P, Xia B, Ruan KB, Yi JB, Ding J, Li XG, Wang L. Large exchange bias after zero-field cooling from an unmagnetized state. Phys Rev Lett 2011; 106:077203. [PMID: 21405539 DOI: 10.1103/physrevlett.106.077203] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Indexed: 05/30/2023]
Abstract
Exchange bias (EB) is usually observed in systems with an interface between different magnetic phases after field cooling. Here we report an unusual phenomenon in which a large EB can be observed in Ni-Mn-In bulk alloys after zero-field cooling from an unmagnetized state. We propose that this is related to the newly formed interface between different magnetic phases during the initial magnetization process. The magnetic unidirectional anisotropy, which is the origin of the EB effect, can be created isothermally below the blocking temperature.
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Affiliation(s)
- B M Wang
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
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Ju DW, Wang BM, Cao X. Adenovirus-mediated combined suicide gene and interleukin-2 gene therapy for the treatment of established tumor and induction of antitumor immunity. J Cancer Res Clin Oncol 1999; 124:683-9. [PMID: 9879829 DOI: 10.1007/s004320050232] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [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: 11/28/2022]
Abstract
The antitumor effect of the combined transfer of a suicide gene and a cytokine gene was evaluated in the present study. Adenoviruses expressing Escherichia coli cytosine deaminase (AdCD) and adenoviruses expressing murine interleukin-2 (AdIL-2) were utilized for the treatment of established tumors. The mice were inoculated s.c. with FBL-3 erythroleukemia cells and 3 days later received an intratumoral injection of AdCD in the presence or absence of AdIL-2 followed by intraperitoneal 5-fluorocytosine (5-FC) administration. The results demonstrated that tumor-bearing mice treated with AdCD/5-FC in combination with AdIL-2 showed more potent inhibition of tumor growth and survived much longer than did mice treated with AdCD/5-FC, AdIL-2, adenovirus expressing beta-galactosidase/5-FC or phosphate-buffered saline. The tumor mass showed obvious necrosis and inflammatory cell infiltration, and more CD4+ and CD8+ T cells infiltrating the tumor after combined therapy. The splenic natural killer and cytotoxic T lymphocyte activities increased significantly in the mice after combined therapy with AdCD/5-FC/AdIL-2. Our results demonstrate that therapy combining a suicide gene and IL-2 gene can inhibit the growth of established tumors in mice significantly and induce antitumor immunity of the host efficiently.
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Affiliation(s)
- D W Ju
- Department of Immunology, Second Military Medical University, Shanghai, PR China
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Cao X, Ju DW, Tao Q, Wang J, Wan T, Wang BM, Zhang W, Hamada H. Adenovirus-mediated GM-CSF gene and cytosine deaminase gene transfer followed by 5-fluorocytosine administration elicit more potent antitumor response in tumor-bearing mice. Gene Ther 1998; 5:1130-6. [PMID: 10326037 DOI: 10.1038/sj.gt.3300727] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [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: 11/09/2022]
Abstract
Antitumor effects of combined transfer of suicide and cytokine genes were investigated in this study. Adenovirus harboring E. coli cytosine deaminase gene (AdCD) and adenovirus harboring murine granulocyte-macrophage colony-stimulating factor gene (AdGMCSF) were used simultaneously for in vivo gene transfer in melanoma-bearing mice. Growth inhibition of established tumors and prolongation of survival period were observed more significantly in tumor-bearing mice after transfection with AdGMCSF and AdCD followed by continuous injection of prodrug 5-fluorocytosine (5FC) when compared with mice treated with control adenovirus AdlacZ/5FC, AdCD/5FC or AdGMCSF alone (P < 0.01). After combined therapy the expression of MHC-I (H-2Db) and B7-1 molecules on freshly isolated tumor cells increased greatly and more dendritic cells and CD8+ T cells infiltrated into the tumor mass. The activity of specific cytotoxic T lymphocytes was also found to be induced more significantly after the combined therapy. Further experiments showed that apoptosis of tumor cells and induction of antitumor immune response might be involved in the mechanisms of the tumor cell killing by the combined therapy. Our results demonstrated that combined transfer of the GM-CSF and CD suicide genes, being able to inhibit the growth of melanoma synergistically and induce specific antitumor immune response efficiently, thus addressing the drawbacks of suicide gene therapy or cytokine gene therapy which were proved to be not satisfactory when used alone, might be of therapeutic potential for gene therapy of cancer.
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Affiliation(s)
- X Cao
- Department of Immunology, Second Military Medical University, Shanghai, PR China
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28
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Affiliation(s)
- B M Wang
- Department of Medicine, University of Washington and Harborview Medical Center, Seattle 98104, USA
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29
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Wang BM, Stern EJ, Pierson DJ. Chronic mild dyspnea on exertion and diffuse alveolar infiltrates in a 37-year-old man. Chest 1996; 110:1099-101. [PMID: 8874275 DOI: 10.1378/chest.110.4.1099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- B M Wang
- Department of Medicine, University of Washington, Seattle, USA
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30
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Tang JS, Wang BM, Li CY. A newly developed serum-free culture system: clonal growth of human acute myelogeneous leukemia (AML) progenitors--a report of 14 AML cases. J Tongji Med Univ 1994; 14:173-7. [PMID: 7807605 DOI: 10.1007/bf02886801] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A new serum-free culture (SFC) system for human AML-CFU was established and the colony-promoting activity of four recombinant human hematopoietic growth factors (rhHGFs) including granulocyte-macrophage colony-stimulating factor (rhGM-CSF), interleukin-3 (rhIL-3), erythropoietin (rhEPO) and newly developed stem cell factor (rhSCF) were investigated in this SFC system. Under the orthogonal design condition, it was found that human AML-CFU presented optimal clonal growth in an environment of bovine serum albumin (0.6%), saturated human transferrin (2 x 10(-6) mol/L), cholesterol (2.8 micrograms/ml), bovine insulin (15 micrograms/ml), bovine hemin (0.05 mmol/L), linoleic acid (2.8 micrograms/ml), and IMDM. Spontaneously growing colonies were observed in 11 out of 14 cases studied. The plating efficiencies obtained by culturing with rhGM-CSF, rhIL-3, and rhSCF were 0.776 +/- 0.621%, 0.574 +/- 0.510%, and 0.647 +/- 0.543% (mean +/- s), respectively. There was one case (M3b) showing no response to all HGFs in both SFC ad SCC. The clonal growth of AML-CFU obtained from peripheral blood of the patient with M6 was unexpectedly marked. As a whole, the newly designed SFC system has been demonstrated to be useful for culture of human AML-CFU from both bone marrow and peripheral blood.
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Affiliation(s)
- J S Tang
- Institute of Hematology, Xiehe Hospital, Tongji Medical University, Wuhan
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31
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Guo SY, Wang BM, Zhu QR. [Enzyme cytochemistry and morphometric study of the effects of macrophages on A549 pulmonary alveolar cell carcinoma cell line]. Zhonghua Bing Li Xue Za Zhi 1994; 23:218-20. [PMID: 7805150] [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: 01/27/2023]
Abstract
In order to study the mechanism of the effects of M phi on tumor cells, enzyme cytochemistry and morphometry were used to investigate the activities of cytochrome oxidase (CO), succinate dehydrogenase (SD), lactate dehydrogenase (LDH) and acid phosphatase (ACP) in A549 pulmonary alveolar cell carcinoma cells which had been interacted with normal and CP-activated macrophages respectively. It was found that when E/T = 10:1, the enzyme activity of the cancer cell mitochondria, CO, SD, LDH were decreased, and when E/T = 20:1, the activity of the lysosomal enzyme ACP was increased. These results indicate that when the E/T ratio was appropriate, activated M phi may injure the mitochondria and lysosomes and affect the aerobic respiration and oxidative phosphorylation of cancer cells. This may be one of the cytostatic and cytotoxic mechanisms of activated M phi on tumor cells.
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Affiliation(s)
- S Y Guo
- Department of Pathology, Shanghai Second Medical University
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32
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Tang JS, Li CY, Wang BM. [Effect of recombinant human stem cell factor (rhSCF) on self-renewal of stem/progenitor cells of human acute myelogenous leukemia]. Zhonghua Zhong Liu Za Zhi 1994; 16:259-62. [PMID: 7528655] [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: 01/25/2023]
Abstract
Using serum-free culture system and liquid/semi-solid dual culture technique, we examined the effect of rhSCF on self-renewal of the stem/progenitor cells of human acute myelogenous leukemia (AML-CFU). The results revealed that the rhSCF as a hematopoietic growth factor (HGF) exerted its effect hierarchically earlier than interleukin-3 and granulocyte/macrophage colony-stimulating factor on AML-CFU. rhSCF, whether used alone or in combination with other HGFs, showed potential maintenance of self-renewal of AML-CFU in most AML patients studied. However, considerable discrepancy existed in maintenance among various FAB types of patients or even in patients with the same FAB type. It is suggested that SCF may play an important role in the pathological development of AML.
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Affiliation(s)
- J S Tang
- Department of Hematology, First Affiliated Hospital, Guangzhou Medical College
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33
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Tang JS, Wang BM. An effective method for depleting mature T lymphocytes from bone marrow cells--two-step Percoll centrifugation. J Tongji Med Univ 1994; 14:128-127. [PMID: 7525981] [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: 05/21/2023]
Abstract
In the present paper we have observed the effect of discontinuous gradient two-step Percoll centrifugation on depleting mature T lymphocytes from normal bone marrow. The pre-/post-Percoll percentage of CD34+, and Leu4+ cells in MNC was counted by using APAAP technique. As the two-step Percoll centrifugation is simple, and time saving, and decreases the incidence of contamination of cultured cells as well, This technique may be of value in serum-free culture of hematopoietic cells and immunological studies.
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Affiliation(s)
- J S Tang
- Institute of Hematology, Xiehe Hospital, Tongji Medical University, Wuhan
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34
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Yi FH, Wang BM, Liu XF. The significance of Ki-67, BrdU and OKT9 expression in determination of myelodysplastic syndromes by use of APAAP technique. J Tongji Med Univ 1993; 13:30-3. [PMID: 8326526 DOI: 10.1007/bf02886590] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Monoclonal antibodies (McAb) to Ki-67, BrdU and OKT9 were used in APAAP technique for determining the proliferative cells of 46 myelodysplastic syndromes (MDS) with 16 serving as normal controls. According to Ki-67 positive labelling, the proliferative fractions of bone marrow cells can be divided into low (< 25%), intermediate (25%-35%), and high (> 35%) grades. The labelling positivity of Ki-67, BrdU and OKT9 in MDS was all higher than that of the controls. Furthermore, the positive percentages of these three McAbs were significantly correlated. From the results of our experiment, an increase in proliferative fraction was related to clinical classification, prognosis, and therapy of MDS. On the other hand, the positive percentage of Ki-67 > 40% and BrdU > 30% or ratio of BrdU to Ki-67 > 80% may be considered as parameters for unfavourable prognosis.
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Affiliation(s)
- F H Yi
- Hematology Institute, Xiehe Hospital, Tongji Medical University, Wuhan
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35
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Wang C, Wang BM, Li CY. [Effects of various recombinant human hematopoietic growth factors on proliferation of blast cells in acute myeloid leukemia in vitro]. Zhonghua Nei Ke Za Zhi 1992; 31:350-3, 381. [PMID: 1286586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In vitro proliferative response of the blast cells from 21 AML patients to hematopoietic growth factors (IL-3, GM-CSF, G-CSF and MCSF) was investigated. Proliferation of AML cells in the majority of cases was induced or promoted by one or more CSFs, among which the stimulation of IL-3 was the most effective. Spontaneous proliferation of the blast cells was also observed in half of the cases and could be inhibited as well as promoted by some CSFs. It is suggested that in vitro proliferation of AML cells varies from patient to patient and that CSF plays important roles in leukemogenesis.
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Affiliation(s)
- C Wang
- Institute of Hematology, Tongji Medical University, Wuhan
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36
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Liu XF, Wang BM, Yi FH. [Bone marrow histological changes in myelodysplastic syndrome and its clinical significance]. Zhonghua Nei Ke Za Zhi 1991; 30:675-7, 729. [PMID: 1815870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The authors compared bone marrow histological changes in 28 cases of myelodysplastic syndrome (MDS), 21 cases of aplastic anemia and 8 cases of hemolytic anemia. It is shown that abnormal localization of immature precursors (ALIP) is a characteristic change in MDS. The presence of erythroblastic islands and the variance of morphology of megakaryocytes are valuable for diagnosis. The histological method for the observation of lymphoid micromegakaryocytes is not so accurate as cytological method. "ALIP" can more or less help to evaluate the prognosis of MDS. According to the histological changes, it is easy to differentiate the three types of anemia we studied.
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Affiliation(s)
- X F Liu
- Institute of Haematology, Union Hospital, Tongji Medical University
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37
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Vartak NB, Liu L, Wang BM, Berg CM. A functional leuABCD operon is required for leucine synthesis by the tyrosine-repressible transaminase in Escherichia coli K-12. J Bacteriol 1991; 173:3864-71. [PMID: 1646790 PMCID: PMC208018 DOI: 10.1128/jb.173.12.3864-3871.1991] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
In Escherichia coli K-12, two enzymes, encoded by ilvE and tyrB, catalyze the amination of 2-ketoisocaproate (2-KIC) to form leucine. Although leucine-requiring derivatives of an ilvE strain that are unable to grow on 2-KIC were expected to have mutations only in tyrB, mapping studies showed that one such mutation was tightly linked to the leu operon (at 1.5 min), not to tyrB (at 92 min). Chromosomal fragments cloned because they complemented this mutation were found to complement leu mutations, and vice versa, but none of these fragments complemented a tyrB mutation. The Tn5 insertion and flanking host DNA from this anomalous mutant was cloned in vivo, using Mu dII4042, and an in vivo procedure was developed to isolate deletion derivatives of Tn5-containing plasmids. These deletion plasmids were used to determine the DNA sequences flanking the transposon. The data showed that Tn5 was inserted between bp 122 and 132 in the leu leader. In addition, other ilvE leu double mutants were found to be unable to grow on 2-KIC in place of leucine. The accumulation of 2-ketoisovalerate in ilvE leu double mutants was shown to interfere with 2-KIC amination by the tyrB-encoded transaminase and also by the aspC- and avtA-encoded transaminases (which are able to catalyze this reaction in vivo when the corresponding genes are present on multicopy plasmids).
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Affiliation(s)
- N B Vartak
- Department of Molecular and Cell Biology, University of Connecticut, Storrs 06269-2131
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38
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Wang BM. [Measurement of adenosine deaminase activity (ADA) in the pleural fluid]. Zhonghua Jie He He Hu Xi Za Zhi 1990; 13:76-7, 125-6. [PMID: 2397535] [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: 12/31/2022]
Abstract
ADA was examined in pleural fluid in cases of tuberculous and cancerous pleurisy. The level of ADA in pleural fluid in tuberculosis group (59.6 +/- 33.6 U/L) was significantly higher than that of cancerous group (13.3 +/- 4.0 U/L) (P less than 0.01). The positive rates were 90.0% and 3.3% respectively.
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Affiliation(s)
- B M Wang
- Department of Tuberculosis, Hospital of PLA, Beijing
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39
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Chen Y, Wang BM, Li CY, Yu DJ, Ruan YB. Transmission electron microscopic observation of CFU-mix culture in normal adults and leukemia patients. J Tongji Med Univ 1990; 10:27-30. [PMID: 2348485 DOI: 10.1007/bf02909118] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
By use of transmission electron microscope we demonstrated that the limiting dilution assay is an important method for investigating differentiation of hemopoietic cells in vitro. If various growth factors were added into this culture system, the stem cells of normal adults could differentiate into erythrocyte, granulocyte, megakaryocyte and macrophage, while leukemic progenitor cells could not. The colony forming cell in leukemia still had the nature of leukemic cell.
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MESH Headings
- Adult
- Cell Differentiation
- Cells, Cultured
- Hematopoietic Stem Cells/ultrastructure
- Humans
- Leukemia/pathology
- Leukemia, Monocytic, Acute/pathology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Leukemia, Myeloid, Acute/pathology
- Microscopy, Electron
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/pathology
- Tumor Cells, Cultured/ultrastructure
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Affiliation(s)
- Y Chen
- Institute of Hematology, Tonji Medical University, Wuhan
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40
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Chu JY, Yang AD, Wang BM, Hu Z, Zhu XM, Zhang HJ, Qu JH, Luo LY, Guo R, Shi LR. Monoclonal anti-human T cell antibody and PAP-s conjugate--preparation and selective cytotoxic properties on leukemic cell. J Tongji Med Univ 1990; 10:15-8. [PMID: 2348483 DOI: 10.1007/bf02909115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Pokeweed antiviral protein (PAP-s) was prepared from seeds of Phytolacca americana. Monoclonal antibody against human pan-T lymphocyte Wu71 was linked to PAP-s by a disulfide bond. The results of SDS-PAGE, double immunodiffusion of active monoclonal antibody and PAP-s showed that the conjugate was highly cytotoxic to the human T-leukemic cell line CEM, but not to antigen-negative cell line SP2/O. At a concentration of 10(-9) mol/L, 76.4% of the target cells were killed, as compared with 10.1% at 10(-9) mol/L of free PAP-s. Treatment of the CEM cells with conjugate at 10(-9) mol/L reduced their rate of protein synthesis by 72.4%, as determined with 14C-leucine incorporation. The immunotoxin may be useful for the in-vitro eradication of leukemic cells in autologous bone marrow transplantation to leukemia patients.
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Affiliation(s)
- J Y Chu
- Institute of Hematology, Xiehe Hospital, Tongji Medical University, Wuhan
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41
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Chen Y, Wang BM, Li CY, Yu DJ. Scanning electron microscopic observation of CFU-mix of normal adults and leukemic patients including two cases of myeloid-lymphoid bipotent leukemia. J Tongji Med Univ 1990; 10:23-6. [PMID: 2348484 DOI: 10.1007/bf02909117] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We observed CFU-Mix of 4 normal adults and 11 cases of leukemia. The culture system used by us in this study represented a suitable model for studying differentiation of hemopoietic stem cells in vitro. The pathogenesis of myeloid-lymphoid bipotent leukemia were malignant changes in pluripotent hemopoietic progenitor cells. The leukemic clones showed proliferation, but did not mature in culture. It is suggested that differentiation of leukemic stem cell did not pass through CFU-Mix stage.
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Affiliation(s)
- Y Chen
- Institute of Hematology, Xiehe Hospital, Tongji Medical University, Wuhan
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42
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Sun GX, Wang BM, Yang AD, Yu DJ. Characteristic of marrow culture and clinical relevance in leukemia with 8/21 translocation. J Tongji Med Univ 1989; 9:228-31. [PMID: 2630651 DOI: 10.1007/bf02909088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Karyotypes and in vitro cultures of bone marrow cells from eleven patients with acute myelogenous leukemia M2 type were performed. 8/21 translocation was found in 5 patients. In all of them the cultures in vitro shared one characteristic, i.e., clusters were small and less in number. These patients could relatively easily obtain complete remission. The similarity of CFU-GM in patients with t (8; 21) may be another important biological phenotype.
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43
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Wang BM. [Flow cytometric analysis of the effect of activated macrophages on alveolar cell carcinoma of lung in vitro]. Zhonghua Bing Li Xue Za Zhi 1989; 18:207-10. [PMID: 2561474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Evidences have shown that activated macrophages were cytotoxic to tumor cells but the mechanism of this killing effect is not well understood. Flow cytometry was used to study the effect of activated macrophages on cell proliferation cycle of alveolar cell carcinoma of lung (A 549). Among 74 C57BL/6J mice, 30 as experimental group were given corynebacterium parvum 0.5 ml (1 mg)/mouse intraperitoneally, and 44 as control group were given normal saline 0.5 ml/mouse instead. Peritoneal macrophages of both groups were co-cultured with A 549 in the ratio of 10:1 and 20:1 for 24 and 48 hrs respectively. Specimens were assayed with LXJ-Laser flow cytometer and relative % of tumor cells in G1/O, S and G2 + M phased were calculated by morphometry using Baisech's mathematical model and Zeiss OPTON Video plan. Results indicated that in the experimental group with E/T 20:1, co-cultured for 24 hrs., the % of tumor cells in S phase was markedly decreased (28.44%) and those in G1/0 phase was increased (60.18%) (P less than 0.01); while those of the control group were 40.41% and 49.99% respectively. Changes present in S and G1/0 phase tumor cells of the experimental group indicate that activated macrophages may block tumor cells from the G1/0 to S phase and thus affect their proliferation.
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44
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Chen Y, Wang BM, Li CY, Yu DJ. Studies on CFU-mix of 47 patients with leukemia and myelodysplastic syndrome. Chin Med J (Engl) 1989; 102:425-30. [PMID: 2512062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
By limiting dilution assay, CFU-Mix of 47 cases of untreated leukemia, myelodysplastic syndrome and 30 cases of normal adults were studied. It is suggested that most cases of acute nonlymphocytic leukemia, like chronic myelogenous leukemia (CML) and myelodysplastic syndrome should have defect in pluripotent hemopoietic stem cell. The CFU-Mix of acute myelogenous leukemia (AML) and CML were obviously lower than that of normal adults (p less than 0.001). By light microscopy, scanning and transmission electron microscopy, it was confirmed that the CFU-Mix colonies, of leukemic patients were chiefly composed of leukemic cells. Their incorporating rate of 3H-TdR was high in the early stage of culture, but that of 55 + 59Fe was low in the whole course. This phenomenon was quite different from that of the normal adults in that the CFU-Mix of the patients showed distinctive proliferation and differentiation into the leukemic progenitor cells.
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45
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Chen Y, Wang BM, Li CY. [Studies on CFU-Mix in 54 cases of leukemia and myelodysplastic syndrome]. Zhonghua Nei Ke Za Zhi 1989; 28:35-8, 62-3. [PMID: 2737036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
By use of limiting dilution assay, it is confirmed that most of acute nonlymphocytic leukemia, such as chronic myelogenous leukemia and myelodysplastic syndrome, had defect in the stage of pluripotent hemopoietic stem cell. With light microscopy, scanning and transmission electron microscopy, colonies which originated from leukemic progenitor cells (L-CFU) were ascertained. The incorporated rates of 3H-TdR and 55 + 59Fe showed that proliferative manner of LCFU was apparently different from that of normal adults.
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46
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Chen Y, Wang BM, Li CY, Yu DJ. Studies on the relationship between leukemic fibroblast colony forming cell and hemopoietic cells. J Tongji Med Univ 1988; 8:219-22. [PMID: 3249350 DOI: 10.1007/bf02887894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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47
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Chen Y, Li CY, Wang BM, Shen D, Yu DJ. Study on fibroblast colony forming units derived from bone marrow of normal adults and untreated patients with acute nonlymphocytic leukemia. J Tongji Med Univ 1988; 8:87-8. [PMID: 3249345 DOI: 10.1007/bf02887800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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48
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Huang SA, Wang BM, Li CY, Yu DJ. Research on normal human bone marrow CFU-GM by limiting dilution microculture. J Tongji Med Univ 1988; 8:83-6. [PMID: 3074178 DOI: 10.1007/bf02887799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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49
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Mao P, Wang BM, Shen D, Wei WN. Determination of fibrinopeptide A by high performance liquid chromatography and its significance. Chin Med J (Engl) 1988; 101:353-6. [PMID: 3145836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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50
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Wang BM. [SEM and TEM observations on activated peritoneal macrophages from C57BL/6J mice]. Zhonghua Bing Li Xue Za Zhi 1988; 17:32-5. [PMID: 3401988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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