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Li DP, Huang L, Kan RR, Meng XY, Wang SY, Zou HJ, Guo YM, Luo PQ, Pan LM, Xiang YX, Mao BB, Xie YY, Wang ZH, Yang M, He R, Yang Y, Liu ZL, Xie JH, Ma DL, Zhang BP, Shao SY, Chen X, Xu SM, He WT, Li WJ, Chen Y, Yu XF. LILRB2/PirB mediates macrophage recruitment in fibrogenesis of nonalcoholic steatohepatitis. Nat Commun 2023; 14:4436. [PMID: 37481670 PMCID: PMC10363120 DOI: 10.1038/s41467-023-40183-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 07/18/2023] [Indexed: 07/24/2023] Open
Abstract
Inhibition of immunocyte infiltration and activation has been suggested to effectively ameliorate nonalcoholic steatohepatitis (NASH). Paired immunoglobulin-like receptor B (PirB) and its human ortholog receptor, leukocyte immunoglobulin-like receptor B (LILRB2), are immune-inhibitory receptors. However, their role in NASH pathogenesis is still unclear. Here, we demonstrate that PirB/LILRB2 regulates the migration of macrophages during NASH by binding with its ligand angiopoietin-like protein 8 (ANGPTL8). Hepatocyte-specific ANGPTL8 knockout reduces MDM infiltration and resolves lipid accumulation and fibrosis progression in the livers of NASH mice. In addition, PirB-/- bone marrow (BM) chimeras abrogate ANGPTL8-induced MDM migration to the liver. And yet, PirB ectodomain protein could ameliorate NASH by sequestering ANGPTL8. Furthermore, LILRB2-ANGPTL8 binding-promoted MDM migration and inflammatory activation are also observed in human peripheral blood monocytes. Taken together, our findings reveal the role of PirB/LILRB2 in NASH pathogenesis and identify PirB/LILRB2-ANGPTL8 signaling as a potential target for the management or treatment of NASH.
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Affiliation(s)
- Dan-Pei Li
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Li Huang
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Ran-Ran Kan
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Xiao-Yu Meng
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Shu-Yun Wang
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Hua-Jie Zou
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Ya-Ming Guo
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Pei-Qiong Luo
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Li-Meng Pan
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Yu-Xi Xiang
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Bei-Bei Mao
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Yu-Yu Xie
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Zhi-Han Wang
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Min Yang
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Rui He
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Yan Yang
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Zhe-Long Liu
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Jun-Hui Xie
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - De-Lin Ma
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Ben-Ping Zhang
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Shi-Ying Shao
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Xi Chen
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Si-Miao Xu
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Wen-Tao He
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Wen-Jun Li
- Computer Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yong Chen
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China.
| | - Xue-Feng Yu
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China.
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Mao ML, Zhao YH, Ma DL, Liu HG. [Expression of VHL, VEGF and HIF-1α in endolymphatic sac tumors]. Zhonghua Bing Li Xue Za Zhi 2021; 50:1228-1233. [PMID: 34719159 DOI: 10.3760/cma.j.cn112151-20210324-00231] [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
Objective: To investigate the expression of von Hippel-Lindau (VHL), vascular endothelial growth factor (VEGF) and hypoxia inducible factor-1α (HIF-1α) in endolymphatic sac tumor (ELST) and its clinical significance, and to analyze its association with VHL gene mutation. Methods: Twenty-four cases of ELST, which were surgically resected and diagnosed by pathological examination in Beijing Tongren Hospital Affiliated to Capital Medical University, Beijing, China during 2012-2020, were recruited as the ELST group, and 24 cases of otitis media diagnosed in the same hospital were selected as the control group. The expression of VHL, VEGF, and HIF-1α was assessed using EnVision immunohistochemical staining and compared between the ELST and control groups. Sanger sequencing was performed to detect the VHL mutation status in 24 ELSTs. The correlations among VHL, VEGF and HIF-1α expression were analyzed. The associations of VHL, VEGF and HIF-1α expression with age of onset, gender, tumor size, bone invasion and clinical stage in ELST were also analyzed. Results: The expression rate of VHL in the ELST group was significantly lower than that in the control group (P<0.05), but the expression rates of VEGF and HIF-1α in the ELST group were significantly higher than those in the control group (P<0.05). VHL expression was inversely correlated with VEGF and HIF-1α expression. The expression of VEGF and HIF-1α was associated with bone invasion and clinical stage (P<0.05), but the expression of VHL, VEGF and HIF-1α had no significant associations with the age of onset, gender, or tumor size of ELST (P>0.05). Conclusions: The expression of VHL is decreased while that of VEGF and HIF-1α increased in ELST. Expression of VHL is inversely correlated with that of VEGF and HIF-1α. The expression of VEGF and HIF-1α is correlated with bone invasion and clinical stage. Thus, VEGF and HIF-1α may be therapeutic targets of ELST.
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Affiliation(s)
- M L Mao
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Head and Neck Molecular Diagnostic Pathology, Beijing 100730, China
| | - Y H Zhao
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Head and Neck Molecular Diagnostic Pathology, Beijing 100730, China
| | - D L Ma
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Head and Neck Molecular Diagnostic Pathology, Beijing 100730, China
| | - H G Liu
- Department of Pathology, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Head and Neck Molecular Diagnostic Pathology, Beijing 100730, China
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Li M, Fan R, Peng X, Huang J, Zou H, Yu X, Yang Y, Shi X, Ma D. Association of ANGPTL8 and Resistin With Diabetic Nephropathy in Type 2 Diabetes Mellitus. Front Endocrinol (Lausanne) 2021; 12:695750. [PMID: 34603198 PMCID: PMC8479106 DOI: 10.3389/fendo.2021.695750] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 08/30/2021] [Indexed: 12/22/2022] Open
Abstract
Background Previous studies showed altered angiopoietin-like protein-8 (ANGPTL-8) and resistin circulating levels in type 2 diabetes mellitus (T2DM). Whether or not the alteration in ANGPTL-8 and resistin level can be a predictive maker for increased diabetic nephropathy risk remains unclear. Aim To Investigate the possible association of ANGPTL-8 and resistin with DN, and whether this association is affected by NAFLD status. Methods A total of 278 T2DM patients were enrolled. Serum levels of ANGPTL8, resistin, BMI, blood pressure, duration of diabetes, glycosylated hemoglobin (HbA1c), fasting blood glucose (FPG), hypersensitive C-reactive protein (hs-CRP), lipid profile, liver, and kidney function tests were assessed. The relationship between DN with ANGPTL8 and resistin was analyzed in the unadjusted and multiple-adjusted regression models. Results Serum levels of ANGPTL8 and resistin were significantly higher in DN compared with T2DM subjects without DN (respectively; P <0.001), especially in non-NAFLD populations. ANGPTL8 and resistin showed positive correlation with hs-CRP (respectively; P<0.01), and negative correlation with estimated GFR (eGFR) (respectively; P=<0.001) but no significant correlation to HOMA-IR(respectively; P>0.05). Analysis showed ANGPTL8 levels were positively associated with resistin but only in T2DM patients with DN(r=0.1867; P<0.05), and this significant correlation disappeared in T2DM patients without DN. After adjusting for confounding factors, both ANGPTL8(OR=2.095, 95%CI 1.253-3.502 P=0.005) and resistin (OR=2.499, 95%CI 1.484-4.208 P=0.001) were risk factors for DN. Data in non-NAFLD population increased the relationship between ANGPTL8 (OR=2.713, 95% CI 1.494-4.926 P=0.001), resistin (OR=4.248, 95% CI 2.260-7.987 P<0.001)and DN. The area under the curve (AUC) on receiver operating characteristic (ROC) analysis of the combination of ANGPTL8 and resistin was 0.703, and the specificity was 70.4%. These data were also increased in non-NAFLD population, as the AUC (95%CI) was 0.756, and the specificity was 91.2%. Conclusion This study highlights a close association between ANGPTL8, resistin and DN, especially in non-NAFLD populations. These results suggest that ANGPTL-8 and resistin may be risk predictors of DN.
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Affiliation(s)
- Mengni Li
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Rongping Fan
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xuemin Peng
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiaojiao Huang
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huajie Zou
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xuefeng Yu
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Wuhan Branch of National Clinical Research Center for Metabolic Diseases, Wuhan, China
| | - Yan Yang
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Wuhan Branch of National Clinical Research Center for Metabolic Diseases, Wuhan, China
| | - Xiaoli Shi
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Wuhan Branch of National Clinical Research Center for Metabolic Diseases, Wuhan, China
| | - DeLin Ma
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Wuhan Branch of National Clinical Research Center for Metabolic Diseases, Wuhan, China
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Zhang YC, Sun GL, Ma DL, Wei C, Shang HJ, Liu Z, Li R, Wang T, Wang SG, Liu JH, Liu XM. The presence of intraductal carcinoma of the prostate is closely associated with poor prognosis: a systematic review and meta-analysis. Asian J Androl 2021; 23:103-108. [PMID: 32496222 PMCID: PMC7831822 DOI: 10.4103/aja.aja_21_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We aimed to confirm the predictive ability of the presence of intraductal carcinoma of the prostate (IDC-P) for prognosis and the associations between IDC-P and clinicopathological parameters. Studies were identified in PubMed, Cochrane Library, EMBASE, Web of Science, and SCOPUS up to December 1, 2019. Hazard ratios (HRs) for survival data and odds ratios for clinicopathological data with 95% confidence intervals (CIs) were extracted. Heterogeneity was evaluated by the I2 value, and quality was assessed by the Newcastle–Ottawa Scale criteria. A total of 4179 patients from 13 studies were included. The results showed that IDC-P presence was significantly associated with poor progression-free survival (PFS; HR = 2.31; 95% CI: 1.96–2.73), cancer-specific survival (HR = 1.89; 95% CI: 1.28–2.77), and overall survival (HR = 2.14; 95% CI: 1.53–3.01). In the subgroup analysis, IDC-P presence was significantly associated with poor PFS in prostate cancer treated by radical prostatectomy (HR = 2.48; 95% CI: 2.05–3.00) and treated by radiotherapy (HR = 2.83; 95% CI: 1.65–4.85). Regarding clinicopathological characteristics, patients with IDC-P presence had significantly higher tumor clinical stages, Gleason scores, probabilities of lymph node invasion, positive surgical margins, and positive extraprostatic extension. Our meta-analysis indicates that the presence of IDC-P is closely associated with poor prognosis and adverse clinicopathological characteristics. Our data support the value and clinical utility of the routine detection of IDC-P by pathological examination. These conclusions need further validation, and prospective studies are needed to find better treatment modalities other than traditional first-line therapy for patients with IDC-P.
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Affiliation(s)
- Yu-Cong Zhang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Department of Geriatric, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Guo-Liang Sun
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - De-Lin Ma
- Department of Endocrine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Chao Wei
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Hao-Jie Shang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zhuo Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Rui Li
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Tao Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Shao-Gang Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ji-Hong Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xia-Ming Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Liu XM, Ma DL, Yuan G, Xie JH. Progressively Enlarging Goiter: Case Reports of Primary Thyroid Lymphoma and Literature Review. Curr Med Sci 2020; 40:518-522. [PMID: 32474859 DOI: 10.1007/s11596-020-2204-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/03/2020] [Indexed: 12/23/2022]
Abstract
Primary thyroid lymphoma (PTL) is an exceptionally rare and highly aggressive potentially curable malignant disease. We report three typical cases of PTL referred to our hospital. All three cases had long history of Hashimoto's thyroiditis, and presented with progressively enlarging neck mass. The first two cases were confirmed by surgical biopsy to be diffuse large B cell lymphoma, and received radiotherapy combined with chemotherapy, or received only chemotherapy. The third case was confirmed by core needle biopsy to be mucosa-associated lymphoid tissue lymphoma, and received radiotherapy. In summary, confirmation of PTL diagnosis is essential for further clinical decisions. Core biopsy should be one of the most important methods to make the diagnosis of PTL, while the use of fine needle aspiration cytology alone is still limited in diagnosing PTL.
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Affiliation(s)
- Xia-Ming Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - De-Lin Ma
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Gang Yuan
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jun-Hui Xie
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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Mei JH, Tang G, Wang Q, Wen PQ, Xu MG, Cui D, Ma DL, Liu C, Wang GB. [Role of ash2 (absent, small, or homeotic)-like and Jumonji domain-containing protein 3 on histone methylation of interferon-gamma gene and their associations with vascular damage of Kawasaki disease]. Zhonghua Xin Xue Guan Bing Za Zhi 2019; 45:791-798. [PMID: 29036979 DOI: 10.3760/cma.j.issn.0253-3758.2017.09.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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 impacts of ash2 (absent, small, or homeotic)-like (Ash2L) and Jumonji domain-containing protein 3 (Jmjd3) on histone methylation of interferon-gamma(IFN-γ) gene and association with vascular damage of Kawasaki disease (KD) in acute phase. Methods: This study was performed among 36 children with KD in acute phase (KD group) and 28 age-matched health children (control group), who were treated or underwent physical examination in our hospital between February 2015 and June 2016. Patients were further divided into KD groups with or without coronary artery lesions (KD-CAL(+) , 16 cases; KD-CAL(-), 20 cases). All KD patients were treated with intravenous immunoglobulin. The proportion of type 1 helper T(Th1) cells and protein levels of IFN-γ, T-box expressed in T cells(T-bet), phosphorylated signal transducer and activator of transcription 1(pSTAT1) and phosphorylated signal transducer and activator of transcription 4(pSTAT4) were analyzed by flow cytometry.Chromatin immunoprecipitation was performed to determine histone methylation (histone H3 tri-methyl K4(H3K4me3), histone H3 tri-methyl K27(H3K27me3)) and binding levels of Ash2L, Jmjd3 and Ezh2 associated with IFN-γ in CD4(+) T cells. Quantitative real-time PCR was used to determine mRNA levels of IFN-γ, interferon γ receptor 1(IFN-γR1), interferon γ receptor 2(IFN-γR2), interleukin 12 receptor subunit beta 1(IL-12Rβ1), interleukin 12 receptor subunit beta 2(IL-12Rβ2), interleukin 18 receptor subunit beta α(IL-18Rα), interleukin 18 receptor subunit beta β(IL-18Rβ), tumor necrosis factor receptor 1(TNFR1), toll-like receptor 4(TLR4), receptor interacting serine/threonine kinase 1(RIP-1) and myeloid differentiation primary response gene 88(MyD88) in CD4(+) T cells. Plasma concentrations of IFN-γ, interleukin 12(IL-12), interleukin 18(IL-18) and tumor necrosis factor α(TNF-α) were measured by enzyme-linked Immunosorbent assay. Results: (1)The proportion of Th1 and its protein level of IFN-γ were significantly higher in KD group than those in control group and higher in KD-CAL(+) group than in KD-CAL(-) group (all P<0.05), and lower after treatment than before treatment (all P<0.05). (2)Compared with control group, mRNA level of IFN-γ and IFN-γ-associating H3K4me3 was increased, while level of IFN-γ associating H3K27me3 in CD4(+) T cells was reduced in KD group (all P<0.05), which resulted in a higher rate of H3K4me3/H3K27me3 (P<0.05) in KD group, which was positively correlated with IFN-γ mRNA in KD group(r=0.55, P<0.05). Similar results were found between KD-CAL(+) group and KD-CAL(-) group (all P<0.05). Level of IFN-γ associating H3K27me3 was increased, and mRNA level of IFN-γ and IFN-γ associating H3K4me3 was decreased after treatment than before treatment (all P<0.05). (3)Expression of T-bet protein and binding levels of Ash2L and Jmjd3 with IFN-γ gene were significantly higher in KD group than those in control group(all P<0.05), higher in KD-CAL(+) group than those in KD-CAL(-) group (all P<0.05). These parameters were significantly lower after treatment than before treatment (all P<0.05). Binding level of Ezh2 with IFN-γ gene was similar among various groups (all P>0.05). (4)In comparison with control or after treatment, surface receptors(IFN-γR1/2, IL-12Rβ1/2, IL-18Rα/β, TNFR1 and TLR4) and its downstream molecules(pSTAT1, pSTAT4, RIP(1) and MyD88) in CD4(+) T cells, and plasma concentrations of inflammatory cytokines(IFN-γ, IL-12, IL-18 and TNF-α) were found to be higher in KD group(all P<0.05). These parameters were also higher in KD-CAL(+) group than in KD-CAL(-) group (all P<0.05). Conclusion: Aberrant histone methylation of IFN-γ associating H3K4me3 and H3K27me3 caused by over-binding of Ash2L and Jmjd3 might be involved in immune dysfunction and vascular damage in KD in the acute phase.
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Affiliation(s)
- J H Mei
- Shenzhen Institute of Pediatrics, Shenzhen Children's Hospital, Shenzhen 518038, China
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Ma DL, Ma XK, Liu L, Zhang S. Chemical composition, energy, and amino acid digestibility in 7 cottonseed co-products fed to growing pigs. J Anim Sci 2018; 96:1338-1349. [PMID: 29471455 PMCID: PMC6140892 DOI: 10.1093/jas/sky042] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 02/19/2018] [Indexed: 11/14/2022] Open
Abstract
The objective of this study was to determine the chemical composition, DE and ME contents, and apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of AA in 7 cottonseed co-products fed to growing pigs. The 7 cottonseed co-products were: cottonseed meals (solvent extracted) with CP level of 46%, 50%, and 55% (46CSM, 50CSM, and 55CSM), cottonseed protein with CP level of 50% and 55% (50CSP and 55CSP), fermented cottonseed meal (CSMF), and expelled cottonseed meal (CSME). The DE and ME contents of the 7 test ingredients were measured using 48 crossbreed barrows (BW: 44.1 ± 4.2 kg) and 8 diets (including a corn-soybean meal basal diet) in a completely randomized design. The AID and SID of AA of the 7 test ingredients were determined using 7 crossbreed barrows (initial BW: 67.4 ± 8.5 kg) in a 6 × 8 Youden square design with 6 periods and 8 diets (including one N-free diet). The DE and ME values of the 7 cottonseed co-products varied from 12.72 to 15.63 MJ/kg and 12.24 to 14.83 MJ/kg, respectively. Among the 7 cottonseed co-products, 55CSP and CSME had the greatest (P < 0.05) ME and DE values compared to the other cottonseed co-products. In addition, 55CSP had the greatest (P < 0.05) AID and SID of all the AA tested except for Gly and Pro. In contrast, 46CSM or 55CSM had the lowest (P < 0.05) AID and SID of all the AA tested except for Gly and Pro. The 55CSP also had the greatest (P < 0.05) concentrations of standardized ileal digestible CP and all the AA tested except for Gly and Pro. In conclusion, the chemical composition, energy, and AA digestibility of cottonseed co-products with different processing techniques varied widely. Based on the energy and AA digestibility, cottonseed protein with CP level of 55% is a better dietary ingredient for growing pigs compared with the other cottonseed co-products.
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Affiliation(s)
- D L Ma
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre, China Agricultural University, Beijing, China
| | - X K Ma
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre, China Agricultural University, Beijing, China
| | - L Liu
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre, China Agricultural University, Beijing, China
| | - S Zhang
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre, China Agricultural University, Beijing, China
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8
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Li XH, Yang RF, Jin Q, Ma DL, Wang H, Wei L, Ma H. [Change in neutrophil-lymphocyte ratio during antiviral therapy for HBeAg-positive chronic hepatitis B patients and its predictive value]. Zhonghua Gan Zang Bing Za Zhi 2018; 26:60-62. [PMID: 29804364 DOI: 10.3760/cma.j.issn.1007-3418.2018.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- X H Li
- Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Peking University People's Hospital, Peking University Hepatology Institute, Beijing 100044, China
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9
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Affiliation(s)
- T Zhu
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - D L Ma
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Y P Zeng
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - L Song
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - L Li
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
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Zeng YP, Chen C, Fang K, Jia QN, Ma DL. [Clinicopathological features of acantholytic mammary Paget's disease: a report of 28 cases]. Zhonghua Yi Xue Za Zhi 2017; 97:1076-1078. [PMID: 28395432 DOI: 10.3760/cma.j.issn.0376-2491.2017.14.010] [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 clinicopathological features of acantholytic mammary Paget's disease (AMPD). Methods: From January, 2010 to October, 2016, a total of 28 patients were diagnosed as AMPD in the Department of Dermatology, Peking Union Medical College Hospital. The clinical and histopathological data of these patients were analyzed retrospectively. Results: The patients were all female. The mean age of onset was (51±15)years (range, 24 to 78 years). The median course of disease was 10.5 months (range, 3 months to 2 years). All the cases were unilaterally involved. The ratio of left breast involvement to the right breast involvement was 1.55∶1. In histopathological examination, all the cases showed acantholytic pattern. In addition to that, the prototypical pattern accounted for 50.0% (14/28) of all the AMPD cases. The frequencies of other different accompanied histopathological patterns were: 3 (10.7%) upper nest, 2 (7.1%) budding, 1 (3.6%) tall nest, and 1 (3.6%) sheet-like. Hailey-Hailey-disease-like acantholysis was observed in 18 patients (64.3%), whereas pemphigus-vulgaris-like acantholysis was noted in 7 patients (25.0%) and Darier's-disease-like acantholysis in 3 patients (10.7%). About 75.0% (21/28) of the AMPD cases were found to be accompanied with underlying breast cancers. There was no recurrence in 18 of 20 patients who completed treatment and were followed up for over 1 year. Conclusions: AMPD might involve the left breast more frequently. It is mostly associated with the prototypical pattern of mammary Paget's disease. Hailey-Hailey-disease-like acantholysis may be the most frequent subtype of AMPD. Most AMPD cases are associated with underlying breast cancers, but with a low recurrence rate after treatment.
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Affiliation(s)
- Y P Zeng
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
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11
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Li JY, Wang JB, Liu CB, Ma DL, Ma JH. Dynamic relationship between SIPA1 gene and protein expression and the development of gastric cancer. Genet Mol Res 2017; 16:gmr-16-01-gmr.16019271. [PMID: 28362978 DOI: 10.4238/gmr16019271] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Association of signal-induced proliferation-associated 1 (SIPA) gene and protein expression with gastric cancer development was examined. SIPA1 mRNA and protein levels were determined by real-time quantitative polymerase chain reaction and western blot, respectively, in 40 gastric tumor and tumor-adjacent normal tissues. SIPA1, VEGF-A, and FVIII levels in 60 gastric tumor and 40 tumor-adjacent normal tissues were examined by immunohistochemical staining. Correlations between SIPA1, VEGF-A, and microvessel density (MVD) were analyzed. SIPA1 mRNA levels were significantly lower in tumor tissues than in tumor-adjacent normal tissues (P < 0.05). Similarly, protein levels were significantly lower in tumor tissues (0.3043 ± 0.1062) than in tumor-adjacent normal tissues (0.5423 ± 0.0682, P < 0.05). Positive staining rates of SIPA1 (48.3%) and VEGF-A (36.7%) were lower and higher, respectively, in tumor tissues than in tumor-adjacent normal tissues (65.0 and 2.5%, P < 0.05). Positive protein staining rates in tumor tissues correlated with the degree of differentiation, lymph node metastases, and clinical grading (P < 0.05) and not with sex, age, or tumor size (P > 0.05). Significantly higher MVD (57.4 ± 9.3) was observed in tumor tissues displaying positive SIPA1 staining than in tumor-adjacent normal tissues (41.2 ± 5.7, P < 0.05). SIPA1 and VEGF-A expression in tumor tissues were negatively correlated (r = -0.736, P < 0.05). SIPA1 and its protein may play important roles in gastric cancer invasion, metastasis, and biological behavior. Low SIPA1 levels in gastric cancer may accelerate tumor development and progression by promoting VEGF-A expression to increase vascular density.
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Affiliation(s)
- J Y Li
- Department of Medical Oncology, Linyi Central Hospital, Linyi, Shandong, China
| | - J B Wang
- Department of General Surgery, Linyi Central Hospital, Linyi, Shandong, China
| | - C B Liu
- Department of General Surgery, Linyi Central Hospital, Linyi, Shandong, China
| | - D L Ma
- Department of Medical Oncology, Linyi Central Hospital, Linyi, Shandong, China
| | - J H Ma
- Department of General Surgery, Yishui County People's Hospital, Linyi, Shandong, China
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Zeng YP, Chen C, Fang K, Jia QN, Ma DL. [Clinicopathological study of 56 cases of extramammary Paget's disease with or without acantholysis]. Zhonghua Yi Xue Za Zhi 2017; 97:598-602. [PMID: 28260304 DOI: 10.3760/cma.j.issn.0376-2491.2017.08.008] [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 identify the clinicopathological features of extramammary Paget's disease(EMPD) and investigate the clinical and histopathological significance of acantholysis in EMPD. Methods: From June, 2010 to October, 2016, a total of 56 patients were diagnosed as EMPD in the Department of Dermatology, Peking Union Medical College Hospital. Clinical and histopathological data were retrieved from these patients' medical records and analyzed respectively. The cases were divided into two subgroups according to the histopathological pattern (with or without acantholysis): the acantholytic EMPD (AEMPD) group and the non-acantholytic EMPD (N-AEMPD) group. The clinicopathological data were compared and statistically analyzed between the two groups. Results: The AEMPD group included 22 cases (39.3%), while the N-AEMPD group included 34 cases (60.7%). The male: female ratio, the age of onset, and the median duration of the disease were 10∶1 vs 10.3∶1, (64±8)vs (64±10)years, and 42(4-240)months vs 48(3-120) months in the AEMPD and N-AEMPD groups, respectively, with no significant difference (all P>0.05). There was no significant difference in the severe dermal inflammation (27.3% vs 17.6%, P=0.600 ) and cytologic anaplasia(13.6% vs17.6%, P=0.979)between the AEMPD and N-AEMPD groups.Adnexal involvement or dermal invasion (72.7%) was significantly more common in cases with AEMPD, compared to cases with N-AEMPD (23.5%, P<0.001). And 17 cases in the AEMPD group (77.3%) were Hailey-Hailey-disease-like subtype. The recurrence rate after surgical management (29 cases) showed no significant difference between the two groups (1/12 vs 4/17, P=0.370). Conclusions: Acantholysis is common in EMPD. It is not associated with sex, the age of onset, and the duration of the disease. Acantholysis may indicate invasive growth of Paget's cells. Its occurrence has no association with severe dermal inflammation or cytologic anaplasia. Hailey-Hailey-disease-like subtype is the most common subtype in AEMPD, requiring careful consideration to avoid misdiagnosis. Postoperative recurrence is not associated with acantholysis in EMPD.
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Affiliation(s)
- Y P Zeng
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
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Wang JB, Ma DL, Li JY, Sun QD, Liu YE. Association between expression of DNA mismatch repair genes and clinical features and prognosis of patients with radical resection of colon cancer. Genet Mol Res 2016; 15:gmr8388. [PMID: 27706583 DOI: 10.4238/gmr.15038388] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of this study was to investigate the clinical significance of the expression of DNA mismatch repair (MMR) genes in patients subjected to radical surgical removal of colon cancer, as well as their correlation with disease prognosis. Ninety stage II and III colon cancer patients who received laparoscopic radical resection of colon cancer at our hospital were recruited in this study. The expression of hMLH1, hMSH2, hMSH6, and hPMS2 in the resected tumor tissues was examined by SP immunohistochemistry, in order to analyze the relationship between defective DNA MMR (dMMR) and the clinico-pathological features and prognosis of colon cancer. Patients were followed up over a period of 5-35 months, and the Kaplan-Meier survival curve was plotted. dMMR was confirmed in 27 subjects (30.0%), among whom recurrence with metastasis and death was reported in 5 (18.5%) and 2 (7.4%) patients, respectively. The remaining 63 subjects displayed proficient DNA MMR (pMMR); among these, 19 (30.2%) and 7 (11.1%) recurrences with metastasis and death were reported, respectively. dMMR showed no significant correlation with gender, age, or therapeutic modality (P > 0.05), but was significantly correlated with the degree of differentiation, tumor location, number of resected lymph nodes, presence of ileus, and TNM stage (P < 0.05). The prognosis of patients with dMMR was better than that of patients with pMMR. dMMR serves as a biomarker for the prognosis of stage II/III colon cancers.
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Affiliation(s)
- J B Wang
- Department of General Surgery, Yishui Central Hospital of Linyi, Linyi, Shandong, China
| | - D L Ma
- Department of Medical Oncology, Yishui Central Hospital of Linyi, Linyi, Shandong, China
| | - J Y Li
- Department of Medical Oncology, Yishui Central Hospital of Linyi, Linyi, Shandong, China
| | - Q D Sun
- Department of General Surgery, Yishui Central Hospital of Linyi, Linyi, Shandong, China
| | - Y E Liu
- Department of Infectious Diseases, Yishui Central Hospital of Linyi, Linyi, Shandong, China
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Liang HY, Zhao HG, Li ZP, Harnagea C, Ma DL. Silver nanoparticle film induced photoluminescence enhancement of near-infrared emitting PbS and PbS/CdS core/shell quantum dots: observation of different enhancement mechanisms. Nanoscale 2016; 8:4882-4887. [PMID: 26864498 DOI: 10.1039/c5nr05906b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The photoluminescence (PL) enhancement of a Ag nanoparticle and near-infrared quantum dots (QD) plasmon/fluorophore system was investigated. Different enhancement mechanisms were obtained by tuning surface plasmon resonance of the Ag film and PL of the QDs. A maximum enhancement factor of 2.8 was achieved.
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Affiliation(s)
- H Y Liang
- Institut National de la Recherche Scientifique, University of Québec, 1650 Boulevard Lionel-Boulet, Varennes, Québec, J3X 1S2 Canada.
| | - H G Zhao
- Institut National de la Recherche Scientifique, University of Québec, 1650 Boulevard Lionel-Boulet, Varennes, Québec, J3X 1S2 Canada.
| | - Z P Li
- Beijing Key Laboratory of Nano-Photonics and Nano-Structure (NPNS), Department of Physics, Capital Normal University, Beijing, 100048 China
| | - C Harnagea
- Institut National de la Recherche Scientifique, University of Québec, 1650 Boulevard Lionel-Boulet, Varennes, Québec, J3X 1S2 Canada.
| | - D L Ma
- Institut National de la Recherche Scientifique, University of Québec, 1650 Boulevard Lionel-Boulet, Varennes, Québec, J3X 1S2 Canada.
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15
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Ma DL, Li JY, Liu YE, Liu CM, Li J, Lin GZ, Yan J. Influence of continuous intervention on growth and metastasis of human cervical cancer cells and expression of RNAmiR-574-5p. J BIOL REG HOMEOS AG 2016; 30:91-102. [PMID: 27049079] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This study was carried out to acquire solid evidence that some common treatments could affect micro ribonucleic acids (miRNAs) by revealing the regulatory effect of genes, so as to provide a reference for further exploration of the prevention and treatment of cervical cancer. Nude mouse tumorigenicity assay was used to study the effect of inhibiting miR-574-5p on development and tumorigenic ability of Henrietta Lacks (HeLa) tumor. Cell wound scratch assay, flow cytometry and real-time quantitative polymerase chain reaction (RT-qPCR) were adopted to study the effects of anoxia and temperature, etc., on expression of miR-574-5p and QKI in HeLa as well as on the clone and migration ability of cells, to provide prevention and treatment of cervical cancer with new ideas and evidence. The results demonstrated that cervical cancer tissues had a significantly increased miR-574-5p expression compared with para-carcinoma tissues; conversely, Gomafu, overall QKI (pan-QKI) and QKI-5 messenger ribonucleic acid (mRNA) and protein expression all decreased. Part of the common nursing methods had a certain influence on miR-574-5p expression, HeLa reproduction and metastasis, and even cell cycle. For example, ultraviolet (UV) irradiation was effective in decreasing miR-574-5p expression of HeLa and inhibiting cell migration; severe hypoxia significantly decreased the survival rate of HeLa, leading to the increase of programmed death percentage and cell ratio in G2/M phase as well as the decrease of cell ratio in G1 phase. Incubation at different temperatures also affected miR-574-5p expression and cell proliferation. Thus, it can be known that miR-574-5p, Gomafu and QKI expression in cervical cancer tissues and para-carcinoma tissues are significantly up-regulated or down-regulated. Some treatments, such as UV irradiation, hypoxia, incubation temperatures, etc., can affect miR-574-5p expression and HeLa proliferation as well as metastases in different degrees. These findings provide a reference and basis for further study.
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Affiliation(s)
- D L Ma
- Department of Oncology, Yishui Central Hospital of Linyi, Linyi, China
| | - J Y Li
- Department of Oncology, Yishui Central Hospital of Linyi, Linyi, China
| | - Y E Liu
- Department of Infectious Disease, Yishui Central Hospital of Linyi, Linyi, China
| | - C M Liu
- Department of Oncology, Binzhou Medical College Affiliated Hospital, Binzhou, Shandong, China
| | - J Li
- Department of Clinical support, Dongming Peoples Hospital, Shandong, China
| | - G Z Lin
- Department of Health Materials Management, Dongming Peoples Hospital, Shandong, China
| | - J Yan
- Medical Social Work section, Dongming Peoples Hospital, Shandong, China
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Ma DL, Chen FQ, Xu WJ, Yue WZ, Yuan G, Yang Y. Early intervention with glucagon-like peptide 1 analog liraglutide prevents tau hyperphosphorylation in diabetic db/db mice. J Neurochem 2015; 135:301-8. [PMID: 26183127 DOI: 10.1111/jnc.13248] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Revised: 07/09/2015] [Accepted: 07/10/2015] [Indexed: 01/23/2023]
Abstract
Increasing evidence has shown that type 2 diabetes (T2D) is a risk factor for Alzheimer's disease. Neurofibrillary tangles, which consist of hyperphosphorylated tau and misfolded microtubules, is one of the neuropathological hallmarks of Alzheimer's disease. Db/db mice, a rodent model of T2D, also exhibited age-dependent tau hyperphosphorylation. Glucagon-like peptide-1 (GLP-1) mimetics, a type of drug used in T2D, has been found to have neuroprotective effects. The aim of this study was to explore the potential effects of liraglutide (a GLP-1 analog), or insulin, on tau phosphorylation in T2D animals. Male db/db mice (3-3.5 weeks) were daily injected subcutaneously with liraglutide (n = 27), insulin (n = 27), or saline (n = 26), and five to seven mice were killed every 2 weeks for analysis of plasma and cerebrospinal (CSF) insulin levels by ELISA, and protein levels in the hippocampal formation by western blot. We found that db/db mice treated with saline exhibited an age-dependent decrease in CSF insulin and an increase in hippocampal tau phosphorylation. Liraglutide injection reversed the CSF insulin to ~1 mIU/L by the end of 8 weeks treatment, and prevented the hyperphosphorylation of tau protein in the hippocampal formation. By contrast, insulin injection had no effects on CSF insulin or phosphorylation of tau protein. In summary, this study indicates that early GLP-1 analog intervention prevented the age-dependent tau hyperphosphorylation in T2D mice brain, probably by facilitating sequential activation in an insulin signaling pathway reflected in increased basal activation of Akt and basal suppression of glycogen synthase kinase-3 beta.
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Affiliation(s)
- De-Lin Ma
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fu-Qiong Chen
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wei-Jie Xu
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wen-Zhu Yue
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Gang Yuan
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yan Yang
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Ding XF, Ma DL, Zhang Q, Peng W, Fan M, Suo W. Progress of In Vivo Electroporation in the Rodent Brain. Curr Gene Ther 2014; 14:211-7. [DOI: 10.2174/1566523214666140424145305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 04/22/2014] [Accepted: 04/22/2014] [Indexed: 11/22/2022]
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Chen LN, Wang Y, Ma DL, Chen YY. Short interfering RNA against the PDCD5 attenuates cell apoptosis and caspase-3 activity induced by Bax overexpression. Apoptosis 2007; 11:101-11. [PMID: 16374546 DOI: 10.1007/s10495-005-3134-y] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [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: 10/25/2022]
Abstract
The programmed cell death 5 (PDCD5) protein plays an important apoptosis-accelerating role in cells undergoing apoptosis. Decreased expression of PDCD5 has been detected in various human carcinomas. Here we describe that one potent short interfering RNA (siRNA) against the PDCD5 (siPDCD5) specifically inhibits the expression of PDCD5 at both the mRNA and protein level. Cells with decreased PDCD5 expression displayed reduced sensitivity to an apoptotic stimulus induced by Bax overexpression in HeLa, HEK293 and 293T cell lines. Furthermore, we also show that siPDCD5 inhibited both caspase-3 activity and procaspase-3 cleavage. Suppressed expression of PDCD5 attenuates the release of cytochrome c from mitochondria to cytosol induced by Bax overexpression. This phenomenon is accompanied by the reduced translocation of Bax from the cytosol to mitochondria. MTT assay shows that targeted suppression of PDCD5 expression markedly promoted cell proliferation in Hela and HEK293 cell lines. Our data suggests that PDCD5 may exert its effects through pathway of mitochondria by modulating Bax translocation, cytochrome c release and caspase 3 activation directly or indirectly, and that decreased PDCD5 expression may be one of the mechanisms by which tumor cells achieve resistance to apoptotic stimulus induced by anticancer drugs.
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Affiliation(s)
- L N Chen
- Laboratory of Medical Immunology, School of Basic Medical Science, Peking University Health Science Center, 38 Xueyuan Road, Beijing, 100083, People's Republic of China
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Lv BF, Yu CF, Chen YY, Lu Y, Guo JH, Song QS, Ma DL, Shi TP, Wang L. Protein tyrosine phosphatase interacting protein 51 (PTPIP51) is a novel mitochondria protein with an N-terminal mitochondrial targeting sequence and induces apoptosis. Apoptosis 2006; 11:1489-501. [PMID: 16820967 DOI: 10.1007/s10495-006-8882-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [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: 10/24/2022]
Abstract
Apoptosis is a genetically determined cell suicide program. Mitochondria play a central role in this process and various molecules have been shown to regulate apoptosis in this organelle. In the present study, we firstly identified that protein tyrosine phosphatase interacting protein 51 (PTPIP51) is a novel mitochondrial protein, which may induce apoptosis in HEK293T and HeLa cell lines. PTPIP51 transfection resulted in the externalization of phosphatidylserine (PS), activation of caspase-3, cleavage of PARP, and condensation of nuclear DNA. Further investigation revealed that PTPIP51 over-expression caused a decrease in mitochondrial membrane potential and release of cytochrome c, suggesting that it may be involved in a mitochondria/cytochrome c mediated apoptosis pathway. We also found that a putative TM domain near the N terminus of PTPIP51 is required for its targeting to mitochondria, as evidenced by the finding that deletion of the PTPIP51 TM domain prevented the protein's mitochondiral localization. Furthermore, this deletion significantly influenced the ability of PTPIP51 to induce apoptosis. Taken together, the results of the present study suggest that PTPIP51 is a mitochondrial protein with apoptosis-inducing function and that the N-terminal TM domain is required for both the correct targeting of the protein to mitochondria and its apoptotic functions.
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Affiliation(s)
- B F Lv
- Lab of Medical Immunology, School of Basic Medical Science, Peking University Health Science Center, 38# Xueyuan Road, Beijing, 100083, PR China
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Tang FR, Chia SC, Jiang FL, Ma DL, Chen PM, Tang YC. Calcium binding protein containing neurons in the gliotic mouse hippocampus with special reference to their afferents from the medial septum and the entorhinal cortex. Neuroscience 2006; 140:1467-79. [PMID: 16650619 DOI: 10.1016/j.neuroscience.2006.03.022] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2005] [Revised: 03/06/2006] [Accepted: 03/12/2006] [Indexed: 11/26/2022]
Abstract
In CA1 area and the hilus of the dentate gyrus of the mouse hippocampus, drastic reduction of NeuN, calbindin, calretinin, or parvalbumin immunopositive neurons was shown at 3, 7 and 60 days after pilocarpine-induced status epilepticus. In gliotic CA1 area at 60 days, few dendritic branches of calcium binding protein immunopositive neurons could be found suggesting reorganization of the afferents of surviving calcium binding protein immunopositive neurons. Calbindin, calretinin, or parvalbumin and 5-bromo-2'-deoxyuridine (BrdU) double labeling showed that calcium binding protein immunopositive neurons in gliotic CA1 area at 60 days were surviving instead of newly generated neurons. Iontophoretic injection of Phaseolus vulgaris leucoagglutinin into the medial septum and the nucleus of the diagonal band of Broca or the lateral entorhinal cortex showed contacts between Phaseolus vulgaris leucoagglutinin immunopositive en passant and terminal boutons and surviving calcium binding protein immunopositive neurons in the hippocampus. The presence in the gliotic hippocampus of enlarged and/or aggregated bouton-like structures 60 days after pilocarpine-induced status epilepticus is indicative for the reorganization of connections between the hippocampal afferents and surviving hippocampal neurons. This reconstruction could be a factor in the ongoing epileptic activity in this model of mesial temporal lobe epilepsy.
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Affiliation(s)
- F R Tang
- Epilepsy Research Laboratory, National Neuroscience Institute, 11 Jalan Tan Tock Seng, Singapore 308433.
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Yang JZ, Si TM, Ruan Y, Ling YS, Han YH, Wang XL, Zhou M, Zhang HY, Kong QM, Liu C, Zhang DR, Yu YQ, Liu SZ, Ju GZ, Shu L, Ma DL, Zhang D. Association study of neuregulin 1 gene with schizophrenia. Mol Psychiatry 2003; 8:706-9. [PMID: 12874607 DOI: 10.1038/sj.mp.4001377] [Citation(s) in RCA: 188] [Impact Index Per Article: 9.0] [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: 11/09/2022]
Abstract
A number of studies have indicated that 8p22-p12 is likely to harbor schizophrenia susceptibility loci. In this region, the candidate gene of interest, neuregulin 1 (NRG1), may play a role in the pathogenesis of schizophrenia. Then in the present study, we performed the linkage disequilibrium to determine the association between three genetic variants (SNPs: rs3924999, rs2954041, SNP8NRG221533) on NRG1 gene and schizophrenia in 246 Chinese Han schizophrenic family trios using PCR-based restriction fragment length polymorphism method and denaturing high-performance liquid chromatography. The transmission disequilibrium test analysis for each variant showed a significant difference between two transmitted alleles even after Bonferroni correction (rs3924999, P=0.007752; rs2954041, P=0.0009309; SNP8NRG221533, P=0.012606). The global chi(2) test for haplotype transmission also revealed a strong association (chi(2)=46.068, df=7, P&<0.000001). Our results suggest that the NRG1 gene may play a role in conferring susceptibility to the disease.
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Affiliation(s)
- J Z Yang
- Institute of Mental Health, Peking University, Beijing 100083, China
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Shi X, Huang JQ, Zhang YM, Song QS, Ma DL. [Eukaryotic expression and in vitro tumor cell apoptosis-induced effect of human TRAIL]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 2001; 23:145-9. [PMID: 12905891] [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: 03/04/2023]
Abstract
OBJECTIVE To explore the tumor cell apoptosis induced by the effect in vitro of eukaryotic expression of full-length TRAIL cDNA and its extracellular region. METHODS The eukaryotic expression vectors for both forms of the cDNA acquired from the fetal heart cDNA library were constructed. After gene transfecting, the stable expression cell lines were obtained by G418 screening. RESULTS The supernatants from tansfectants could induce apoptosis of different tumor cell lines in vitro, and an enhanced effect was observed by adding TFAR19 (TF-1 cell apoptosis-related protein 19), a novel apoptosis gene product discovered in our laboratory. CONCLUSION Eukaryotic expression products of TRAIL can induce apoptosis of the tumor cells, and TFAR19 could enhance the effect on apoptosis of tumor cells.
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Affiliation(s)
- X Shi
- Molecular Immunology Laboratory, Peking University, Medical Immunology Key Laboratory of Health Ministry of China, Peking University Center for Human Disease Genomics, Beijing 100083, China.
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23
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Han WL, Rui M, Zhang YM, Chen YY, Zhong YC, Di CH, Song QS, Ma DL. [Stimulatory effect of chemokine-like factor 1 (CKLF1) on the growth of bone marrow cells]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 2001; 23:119-22. [PMID: 12905885] [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: 03/04/2023]
Abstract
OBJECTIVE To investigate the activity of CKLF1 on the proliferation and differentiation of bone marrow cells. METHODS Human low density bone marrow cells and mouse bone marrow cells were plated in 96-well microplate and supernatants from transfected COS-7 cell culture were added. The cell proliferation was assayed by MTT method after 5 days incubation. The enhancing effect of CKLF1 on the colony formation of human hematopoietic progenitor cells was identified in semi-solid culture. RESULTS CKLF1 has obvious enhancing effect on both human and mouse bone marrow cells, it can stimulate the colony formation of human hematopoietic stem cells and has synergistic action with GM-CSF. CONCLUSION CKLF1 can promote the proliferation and differentiation of bone marrow cells.
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Affiliation(s)
- W L Han
- Department of Immunology, Basic Medical School, Peking University, Beijing 100083, China
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24
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Sun RH, Wang Y, Zhong YC, Ma DL. [Expression in E. coli and chemotactic activity analyzing of recombinant CC-chemokine RANTES]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 2001; 23:123-6. [PMID: 12905886] [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: 03/04/2023]
Abstract
OBJECTIVE To further understand the structure and function of RANTES and provide basis for research for application. METHODS PCR product corresponding to region encoding mature RANTES protein was cloned into E. coli expression vector; purified recombinant protein was obtained by heparin affinity chromatography and its chemotactic activity was determined by Boyden chamber. RESULTS The recombinant RANTES was expressed in E. coli with high efficiency. Purified protein showed chemotactic activity to peripheral blood lymphocytes, U937 cells, and CCR4 stable-transfected HEK293 cells. CONCLUSION The purified recombinant protein exerted chemotactic activity on PBL and cultured cell lines, and we have established a experimental system for further study of structure and function of RANTES.
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Affiliation(s)
- R H Sun
- Laboratory of Molecular Immunology, Health Science Center, Peking University, Beijing 100083, China
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25
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Fang PK, Ma XC, Ma DL, Fu KY. Determination of interleukin-1 receptor antagonist, interleukin-10, and transforming growth factor-beta1 in synovial fluid aspirates of patients with temporomandibular disorders. J Oral Maxillofac Surg 1999; 57:922-8; discussion 928-9. [PMID: 10437719 DOI: 10.1016/s0278-2391(99)90009-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
PURPOSE This study was undertaken to examine the presence of interleukin-1 receptor antagonist (IL-1ra), IL-10, and transforming growth factor-beta1 (TGF-beta1) in the synovial fluid (SF) lavage specimens of patients with temporomandibular disorders (TMDs). PATIENTS AND METHODS Synovial fluid lavage specimens were obtained from 14 temporomandibular joints (TMJs) of 12 patients with TMJ internal derangement (ID) and 17 TMJs of 15 patients with TMJ osteoarthritis (OA). Seven synovial fluid lavage samples of TMJs of four asymptomatic donors served as normal controls. The concentrations of IL-1ra, IL-10, and TGF-beta1 were detected with sensitive and specific sandwich enzyme-linked immunosorbent assay (sandwich-ELISA). RESULTS IL-1ra, IL-10, and TGF-beta1 in all the normal controls were undetectable. IL-1ra concentrations were 175.78 +/- 52.43 pg/mL in the patients with TMJ ID and 187.85 +/- 59.51 pg/mL in those with TMJ OA. IL-10 was undetectable in all the TMJ ID and OA samples. The concentration of TGF-beta1 in TMJ ID patients (47.93 +/- 88.25 pg/mL) was significantly less than in patients with TMJ OA (143.61 +/- 108.00 pg/mL) (P < .01). CONCLUSION The results suggest that deficiencies of IL-1ra, IL-10, and TGF-beta1 probably play an important role in the cause and pathogenesis of TMJ ID and OA.
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Affiliation(s)
- P K Fang
- Center for Temporomandibular Disorders, School of Stomatology, Beijing Medical University, China.
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26
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Xie H, Cao CF, Ma DL, Meng HX. Existence of IL-8 degrading protease and anti-IL-8 immunoglobulin G in gingival crevicular fluid. Chin J Dent Res 1998; 1:13-6. [PMID: 10557188] [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: 02/14/2023]
Abstract
OBJECTIVE The aim of this study is to identify the nature of the IL-8 inhibitor(s) in gingival crevicular fluid (GCF). METHODS Part 1: Fourteen GCF samples were collected from 13 adult periodontitis (AP) patients, and 9 samples were taken from 8 healthy subjects. Each GCF sample was divided into two aliquots. A serine protease-specific inhibitor, PMSF, was added to one aliquot, and PBS was added to the other aliquot as control. ELISA was used to measure IL-8 level in the samples. Part 2: Forty-one GCF samples were collected from 15 AP patients and indirect ELISA was performed to detect the anti-IL-8 IgG antibody. RESULTS Part 1: IL-8 level in the PMSF samples was significantly greater than that in the control group (3.01 +/- 5.79 mg/L vs 0.05 +/- 0.15 mg/L, respectively P < .001). Part 2: The mean value of anti-IL-8 IgG in GCF was greater than that of negative control + 3 x SD. CONCLUSIONS A serine protease that can "cleave" IL-8 exists in GCF. Gingival crevicular fluid from AP sites contains an autoantibody against IL-8.
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Affiliation(s)
- H Xie
- Department of Periodontology, College and Hospital of Stomatology, Hubei Medical University, P.R. China
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Wang LZ, Su JY, Lu CY, Zhou BH, Ma DL. Effects of recombinant human endothelial-derived interleukin-8 on hemorrhagic shock in rats. Zhongguo Yao Li Xue Bao 1997; 18:434-6. [PMID: 10322935] [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: 02/12/2023]
Abstract
AIM To study the effects of recombinant human endothelial-derived interleukin-8 (IL-8) on hemorrhagic shock. METHODS A profound hemorrhagic shock in rats was produced by exsanguination from femoral artery with mean arterial blood pressure (MABP) maintained at 5.32 kPa for 90 min. After transfusion, IL-8 250 micrograms.kg-1 was i.v. injected. Plasma endothelin-1 (ET-1) and 6 ketoprostaglandin F1 alpha (6-KPGF1 alpha) contents were determined with radioimmunoassay. RESULTS After i.v. IL-8, the MABP in IL-8 group was elevated obviously (P < 0.01), the rat survival 2 h after infusion was increased (P < 0.05). During profound shock the plasma ET-1 levels were higher (21 +/- 4 vs 8.2 +/- 1.8 ng.L-1, P < 0.01) and the plasma 6-KPGF1 alpha contents lower than those in normal rats (107 +/- 12 vs 157 +/- 11 ng.L-1, P < 0.01). IL-8 remarkably reduced the plasma ET-1 levels (10 +/- 4 ng.L-1, P < 0.01) and enhanced plasma 6-KPGF1 alpha contents (368 +/- 16 ng.L-1, P < 0.01). CONCLUSION IL-8 has beneficial antishock effects.
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Affiliation(s)
- L Z Wang
- Institute of Cardiovascular Basic Research, Beijing Medical University, China
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28
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Huang Z, Li T, Yu JR, Ma DL. [The protective effect of IL-1 beta on stress-induced gastric mucosal damage in rat]. Sheng Li Xue Bao 1995; 47:313-9. [PMID: 7481871] [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
The effect of recombinant IL-1 beta on stress-induced gastric mucosal lessions was studied in rats. Pretreatment with IL-1 beta prevented formation of gastric mucosal damage in a dose-dependent manner. IL-1 receptor antagonist peptide (IRAP) could totally reverse the protective effect of IL-1 beta. IL-1 fragment peptide (163-171) had no effect on gastric ulcer formation in the experimental model, whereas sulfhydryl blocker N-ehtylmaleimide partially blocked the protective effect of IL-1 beta. The concentration of protein and noneprotein sulfhydryls in the gastric mucosa was significantly decreased 3 h after stress, and this decrease was partially prevented by IL-1 beta. IL-1 beta also decreased the concentration of molondialdehyde (MDA) in the gastric mucosa after 3 h stress. The results suggest that IL-1 beta could effectively lessen the degree of stress-induced gastric mucosal damage, due possibly to the production of endogenous sulfhydryl compounds in the gastric mucosa.
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Affiliation(s)
- Z Huang
- Department of Physiology, Beijing Medical University
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29
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Lin XZ, Ma DL, Cui RF. [Effects of emodin, sennosides and rheum polysaccharides on free calcium in isolated rat liver cells]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1995; 15:419-421. [PMID: 7580065] [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
The effects of emodin (EMD), sennosides (SEN) and Rheum polysaccharides (RPP) on the free calcium level in the isolated rat liver cells were studied with Ca2+ level 131.60 +/- 37.79 nmol/L in the liver cells. After adding CaCl2 (2 mmol/L) and KCl (120 mmol/L) to liver cell suspension sequentially, the free Ca2+ levels were significantly elevated compared with that of the resting status (P < 0.01). When the liver cells were pretreated with EMD (0.037 mmol/L) for 10 min, in the resting status or using the above doses of CaCl2 and KCl, the free Ca2+ levels were significantly increased compared with that of the control groups (P < 0.01). On the contrary, after administration of SEN (0.046-0.092 mmol/L) and RPP (0.1-0.2 mg/ml), the free Ca2+ levels were obviously decreased compared with that of the control groups (P < 0.01). Furthermore, the inhibitory effect was dose dependent. The opposite effects of the different active ingredients of rhubarb (EMD,SEN,RPP) on the free Ca2+ levels suggested that rhubarb has many kinds of regulatory function in the liver cells.
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Affiliation(s)
- X Z Lin
- Dept. of Pharmacology, Tianjin University of Medical Sciences
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Yang SX, Xie SS, Ma DL, Gao HL, Long ZZ. Enhancement of interleukin-2 production and its mRNA expression by dihydroartemisinin. Zhongguo Yao Li Xue Bao 1994; 15:515-20. [PMID: 7709750] [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: 01/26/2023]
Abstract
Immunoregulatory properties of a novel antimalarial drug dihydroartemisinin (DHA) were investigated in vitro. DHA 0.5-5 mumol.L-1 enhanced the lymphocyte proliferation induced by Con A. Interleukin 2 (IL-2) production and its mRNA expression by both Con A-stimulated mouse splenocytes and a T cell line LBRM-33-1A5 were also augmented by DHA. In contrast, DHA 0.5-5 mumol.L-1 did not show any effect on the lipopolysaccharides (LPS)-induced lymphocyte proliferation and the spontaneous and mitogen-induced proliferation of transformed T cells. These results indicated that DHA might regulate lymphocyte responses through the induction of IL-2 production and that the enhanced T cell proliferation and IL-2 production might be mediated through different pathways.
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Affiliation(s)
- S X Yang
- Department of Immunology, Beijing Medical University, China
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Yang SX, Xie SS, Gao HL, Ma DL, Long ZZ. Triptolide suppresses T-lymphocyte proliferation by inhibiting interleukin-2 receptor expression, but spares interleukin-2 production and mRNA expression. Int J Immunopharmacol 1994; 16:895-904. [PMID: 7868294 DOI: 10.1016/0192-0561(94)90044-2] [Citation(s) in RCA: 27] [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] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The purpose of this study was to elucidate the mechanism of action of triptolide on the T-lymphocyte-mediated immune response. Lymphocytes were incubated with a suboptimal dose of Con A or PHA in the presence or absence of varying doses of triptolide to assess the effect of triptolide on lymphocyte proliferation, interleukin-2 (IL-2) production and IL-2 receptor expression. Then, Con A or PHA induced T-blast cells were cultured with a sufficient dose of recombinant human IL-2 in the presence or absence of triptolide to evaluate the effect of triptolide on the interaction of IL-2 and IL-2 receptors. The effect of triptolide on the immune response in vivo was also investigated. The results of these studies clearly demonstrated that triptolide selectively inhibited the T-lymphocyte proliferative response to Con A and PHA, but had less effect on LPS-induced B-lymphocyte proliferation. Triptolide also suppressed the expression of IL-2 receptors on PHA induced T-blast cells, but did not alter the production of IL-2 by mouse splenic cells and human tonsil lymphocytes. Furthermore, the results also showed that triptolide at higher concentration had a slight inhibitory effect on the interaction of IL-2 and IL-2 receptors, and addition of exogenous IL-2 did not reverse the inhibiting action of triptolide on T-cell proliferation. Taken together, these results suggest that triptolide inhibits T-lymphocyte proliferation mainly by affecting IL-2 receptor expression rather than IL-2 production.
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Affiliation(s)
- S X Yang
- Department of Immunology, Beijing Medical University, People's Republic of China
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Jin ZH, Ma DL, Lin XZ. [Study on effect of emodin on the isolated intestinal smooth muscle of guinea-pigs]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1994; 14:429-431. [PMID: 7950233] [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: 05/22/2023]
Abstract
Emodin is an active principle of Rheum palmatum. It is reported that emodin possesses antibiotic and antineoplastic functions. The effect of emodin action on the isolated intestinal smooth muscle of guinea-pigs were dose dependent. When the dose of emodin was less than 29.6 mumol/L, the contraction effect enhanced obviously with increasing dosage; but whenever the dose increased to more than 29.6 mumol/L, on the contrary, the effect decreased gradually and ceased finally. Emodin with appropriate concentration (14.8 mumol/L) strengthened the effect of acetylcholine (Ach) on the isolated ileum and large intestine of guinea-pigs (P < 0.05 and P < 0.01). But high concentration of emodin could reduce even completely antagonize the effect of Ach. Under such condition, CaCl2 could restore the effect of Ach on the smooth muscle. It is suggested that emodin has biphasic regulatory effect on the intestinal smooth muscle, and its effect is related to calcium ion.
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Affiliation(s)
- Z H Jin
- Dept. of Pharmacology, Tianjin Medical College
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Zhao MW, Sun DJ, Ma DL. [Protective effect of interleukin-1 receptor antagonist on oleic acid-induced lung injury]. Zhonghua Nei Ke Za Zhi 1994; 33:158-61. [PMID: 7805520] [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
Thirty-six mice were divided into a control group, lung injury group by oleic acid and protected group with interleukin-1 receptor antagonist (IL-1ra). There were 12 mice in each group. Oleic acid was injected into the tail vein of the mouse with a dose of 0.2 ml/kg to produce a model of acute lung injury (ALI). The result indicates that preadministration of IL-1ra to the mouse with ALI can decrease the lung index, lung wet-to-dry weight ratio and leakage of protein from pulmonary capillary, elevate PaO2, and significantly attenuate lung histologic injury (alveoli edema, alveoli hemorrhage, lung necrosis, inflammatory cell invasion). It is suggested that IL-1ra has protective effect on oleic acid-induced lung injury and may be a potential tool for treatment of ARDS.
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Affiliation(s)
- M W Zhao
- Department of Respiratory Disease, 3rd Hospital, Beijing Medical University
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Ma QJ, Dang GT, Ma DL. [Molecular biological study on bone morphogenetic protein]. Zhonghua Wai Ke Za Zhi 1993; 31:735-8. [PMID: 8033703] [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: 01/28/2023]
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35
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Zhou YY, Wang HY, Tang ZG, Ma DL. [Two new formulae for evaluating the effectiveness of drug combinations and the revision of Bürgi's and Jin's modified Bürgi's formulae]. Zhongguo Yao Li Xue Bao 1984; 5:217-21. [PMID: 6242209] [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: 01/19/2023]
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36
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Zhou YY, Wang HY, Tang ZG, Ma DL. [Two new formulae for evaluating effectiveness of drug combinations and revision of Bürgi's and Jin's modified Bürgi's formula]. Zhongguo Yao Li Xue Bao 1984; 5:217-21. [PMID: 6240893] [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: 01/19/2023]
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