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Gu LM, Li HZ, Gao L, Li H, Wei LF, Pan CY, Wu KX, Tian YZ. Huangqin Decoction Delays Progress of Colitis-Associated Carcinogenesis by Regulating Nrf2/HO-1 Antioxidant Signal Pathway in Mice. Chin J Integr Med 2024; 30:135-142. [PMID: 37434030 DOI: 10.1007/s11655-023-3554-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/08/2023] [Indexed: 07/13/2023]
Abstract
OBJECTIVE To investigate the effect of Huangqin Decoction (HQD) on nuclear factor erythroid 2 related-factor 2 (Nrf2)/heme oxygenase (HO-1) signaling pathway by inducing the colitis-associated carcinogenesis (CAC) model mice with azoxymethane (AOM)/dextran sodium sulfate (DSS). METHODS The chemical components of HQD were analyzed by liquid chromatography-quadrupole-time-of-flight mass spectrometry (LC-Q-TOF-MS/MS) to determine the molecular constituents of HQD. Totally 48 C57BL/6J mice were randomly divided into 6 groups by a random number table, including control, model (AOM/DSS), mesalazine (MS), low-, medium-, and high-dose HQD (HQD-L, HQD-M, and HQD-H) groups, 8 mice in each group. Except for the control group, the mice in the other groups were intraperitoneally injected with AOM (10 mg/kg) and administrated with 2.5% DSS orally for 1 week every two weeks (totally 3 rounds of DSS) to construct a colitis-associated carcinogenesis mouse model. The mice in the HQD-L, HQD-M and HQD-H groups were given HQD by gavage at doses of 2.925, 5.85, and 11.7 g/kg, respectively; the mice in the MS group was given a suspension of MS at a dose of 0.043 g/kg (totally 11 weeks). The serum levels of malondialdehyde (MDA) and superoxide dismutase (SOD) were measured by enzyme-linked immunosorbent assay. The mRNA and protein expression levels of Nrf2, HO-1, and inhibitory KELCH like ECH-related protein 1 (Keap1) in colon tissue were detected by quantitative real-time PCR, immunohistochemistry, and Western blot, respectively. RESULTS LC-Q-TOF-MS/MS analysis revealed that the chemical constituents of HQD include baicalin, paeoniflorin, and glycyrrhizic acid. Compared to the control group, significantly higher MDA levels and lower SOD levels were observed in the model group (P<0.05), whereas the expressions of Nrf2 and HO-1 were significantly decreased, and the expression of Keap1 increased (P<0.01). Compared with the model group, serum MDA level was decreased and SOD level was increased in the HQD-M, HQD-H and MS groups (P<0.05). Higher expressions of Nrf2 and HO-1 were observed in the HQD groups. CONCLUSION HQD may regulate the expression of Nrf2 and HO-1 in colon tissue, reduce the expression of MDA and increase the expression of SOD in serum, thus delaying the progress of CAC in AOM/DSS mice.
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Affiliation(s)
- Li-Mei Gu
- Department of Gastrointestinal Endoscopy, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China
| | - He-Zhong Li
- Department of Gastroenterology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China
| | - Lei Gao
- School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Hui Li
- Department of Gastroenterology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China
| | - Lan-Fu Wei
- Department of Gastroenterology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China
| | - Cheng-Yu Pan
- Department of Gastroenterology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China
| | - Ke-Xuan Wu
- Department of Gastroenterology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China
| | - Yao-Zhou Tian
- Department of Gastroenterology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, China.
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Lin H, Yang H, Fu JF, Yuan K, Huang W, Wu GP, Dong GJ, Tian DH, Wu DX, Tang DW, Wu LY, Sun YL, Pi LJ, Liu LP, Shi W, Gu LG, Huang ZH, Wang LQ, Chen HY, Li Y, Yu HY, Wei XR, Cheng XO, Shan Y, Liu X, Xu S, Liu XP, Luo YF, Xiao Y, Yang GM, Li M, Feng XQ, Ma DX, Pan JY, Tang RM, Chen R, Maimaiti DY, Liu XH, Cui Z, Su ZQ, Dong L, Zou YL, Liu J, Wu KX, Li Y, Li Y. [Analysis of clinical phenotype and genotype of Chinese children with disorders of sex development]. Zhonghua Er Ke Za Zhi 2022; 60:435-441. [PMID: 35488637 DOI: 10.3760/cma.j.cn112140-20210927-00828] [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
Objective: To explore the heterogeneity and correlation of clinical phenotypes and genotypes in children with disorders of sex development (DSD). Methods: A retrospective study of 1 235 patients with clinically proposed DSD in 36 pediatric medical institutions across the country from January 2017 to May 2021. After capturing 277 DSD-related candidate genes, second-generation sequencing was performed to analyzed the heterogeneity and correlation combined with clinical phenotypes. Results: Among 1 235 children with clinically proposed DSD, 980 were males and 255 were females of social gender at the time of initial diagnosis with the age ranged from 1 day of age to 17.92 years. A total of 443 children with pathogenic variants were detected through molecular genetic studies, with a positive detection rate of 35.9%. The most common clinical phenotypes were micropenis (455 cases), hypospadias (321 cases), and cryptorchidism (172 cases) and common mutations detected were in SRD5A2 gene (80 cases), AR gene (53 cases) and CYP21A2 gene (44 cases). Among them, the SRD5A2 mutation is the most common in children with simple micropenis and simple hypospadias, while the AMH mutation is the most common in children with simple cryptorchidism. Conclusions: The SRD5A2 mutation is the most common genetic variant in Chinese children with DSD, and micropenis, cryptorchidism, and hypospadias are the most common clinical phenotypes. Molecular diagnosis can provide clues about the biological basis of DSD, and can also guide clinicians to perform specific clinical examinations. Target sequence capture probes and next-generation sequencing technology can provide effective and economical genetic diagnosis for children with DSD.
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Affiliation(s)
- H Lin
- Department of Endocrinology, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou 310052, China
| | - H Yang
- Department of Urology, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou 310052, China
| | - J F Fu
- Department of Endocrinology, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou 310052, China
| | - K Yuan
- Department of Endocrinology, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou 310052, China
| | - W Huang
- Department of Endocrinology, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou 310052, China
| | - G P Wu
- Department of Endocrinology, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou 310052, China
| | - G J Dong
- Department of Endocrinology, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou 310052, China
| | - D H Tian
- Department of Urology, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou 310052, China
| | - D X Wu
- Department of Urology, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou 310052, China
| | - D W Tang
- Department of Urology, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou 310052, China
| | - L Y Wu
- Department of Genetics and Metabolism, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou 310052, China
| | - Y L Sun
- Department of Children's Gynecology, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center, Hangzhou 310052, China
| | - L J Pi
- Department of Pediatrics, the Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - L P Liu
- Department of Metabolism, Hebei Children's Hospital, Shijiazhuang 050031, China
| | - W Shi
- Department of Urology, Hebei Children's Hospital, Shijiazhuang 050031, China
| | - L G Gu
- Department of Endocrinology, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Z H Huang
- Department of Pediatric Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - L Q Wang
- Department of Endocrinology and Metabolism, Genetics, Xi'an Children's Hospital, Xi'an 710003, China
| | - H Y Chen
- Department of Endocrinology and Metabolism, Genetics, Children's Hospital of Soochow University, Suzhou 215300, China
| | - Y Li
- Department of Endocrinology, Jinan Children's Hospital, Jinan 250000, China
| | - H Y Yu
- Department of Pediatric Surgery, Jinan Children's Hospital, Jinan 250000, China
| | - X R Wei
- Department of Endocrinology and Metabolism, Genetics, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou 450000, China
| | - X O Cheng
- Department of Endocrinology and Metabolism, Genetics, Chengdu Women's and Children's Central Hospital, Chengdu 611731, China
| | - Y Shan
- Department of Pediatric Endocrinology and Metabolism, Genetics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - X Liu
- Department of Endocrinology and Metabolism, Genetics, Maternal and Child Health-Care Hospital in Guiyang, Guiyang 550003, China
| | - S Xu
- Department of Endocrinology, Wuxi Children's Hospital, Wuxi 214023, China
| | - X P Liu
- Department of Endocrinology and Metabolism, Genetics, Guangdong Women and Children Hospital, Guangzhou 511442, China
| | - Y F Luo
- Department of Pediatrics, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Y Xiao
- Department of Pediatrics, the Second Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an 710004, China
| | - G M Yang
- Department of Endocrinology and Metabolism, Genetics, Jiangxi Provicial Children's Hospital, Nanchang 330006, China
| | - M Li
- Department of Pediatric Endocrine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250014, China
| | - X Q Feng
- Department of Endocrinology and Metabolism, Genetics, Children's Hospital of Shanxi Province, Taiyuan 030013, China
| | - D X Ma
- Department of Pediatrics, Guizhou Provincial People's Hospital, Guiyang 550002, China
| | - J Y Pan
- Department of Pediatrics, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - R M Tang
- Department of Pediatrics, Boai Hospital of Zhongshan Affiliated to Southern Medical University, Zhongshan 528403, China
| | - Ruimin Chen
- Department of Endocrinology, Fuzhou Children's Hospital of Fujian Medical University, Fuzhou 350005, China
| | - D Y Maimaiti
- Department of Pediatrics, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - X H Liu
- Department of Pediatrics, Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Z Cui
- Department of Pediatric Surgery, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Z Q Su
- Department of Endocrinology, Shenzhen Children's Hospital, Shenzhen 518023, China
| | - L Dong
- Department of Pediatrics, Henan Provincial Hospital of Traditional Chinese Medicine, Zhengzhou 450009, China
| | - Y L Zou
- Department of Child Health Care, Linyi Peoples Hospital, Linyi 276000, China
| | - J Liu
- Department of Pediatrics, the Second Affiliated Hospital of Nanchang University, Nangchang 330006, China
| | - K X Wu
- Department of Pediatrics Endocrinology and Metabolism, Genetics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Y Li
- Department of Pediatrics, the Affiliated Yantai Yuhuangding Hospital, Yantai 264000, China
| | - Yuan Li
- Department of Pediatrics, First People's Hospital of Yunnan Province, Kunming 650032, China
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Cheung C, Ng CY, Lee KL, Wu KX, Chioh FWJ, Tan K, Siau A, Muthiah MD, Chen QF, Tan NS, Ng HH, Dan YY. Endothelial-T cell crosstalk contributes to vascular injury in fatty liver disease. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3435] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 11/14/2022] Open
Abstract
Abstract
Cardiovascular complications are often the fundamental causes of death in non-alcoholic fatty liver disease (NAFLD) patients. While there are known systemic mediators in NAFLD that may induce vascular inflammation, the mechanism of endothelial dysfunction remain understudied. In this work, we harnessed the replicative potential of blood outgrowth endothelial cells (BOECs) to develop personalized cell lines from NAFLD patients and healthy controls. Our transcriptomic analysis showed that the top interactome network enriched in NAFLD BOECs comprised of several C-C and C-X-C chemokine ligands involved in immune cell chemotaxis. We previously reported T cell infiltration in mouse model of non-alcoholic steatohepatitis, and here, we confirmed enhanced endothelial chemokine signatures in arterial histological sections. To elucidate endothelial-immune crosstalk, we performed single-cell analysis on human peripheral blood mononuclear cells and found T cell intensification in NAFLD patients compared to healthy controls. Our immunoprofiling by flow cytometry further revealed that NAFLD patients possessed higher levels CD8+ memory cells. Functionally, T cells, instead of monocytes, adhered more pronouncedly to NAFLD BOECs. In evaluating the CXCL12-CXCR4 axis in chemotaxis, CXCR4 antagonist (AMD3100) substantially modulated the migration of patient-derived CD8+ T cells towards NAFLD BOECs, which was not observed in healthy endothelial-T cell chemotaxis coculture. Finally, we validated NAFLD-associated endothelial dysfunction by enumerating two folds more circulating endothelial cells, a biomarker of vascular injury, in the blood samples of NAFLD patients than healthy controls. Our work provides insights for translation to restore blood vessel health and potentially mitigate adverse vascular events in NAFLD.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Industrial Alignment Fund Pre-Positioning grant from the Agency for Science, Technology and Research, Singapore Endothelial-T cell crosstalk in NAFLD
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Affiliation(s)
- C Cheung
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - C Y Ng
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - K L Lee
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - K X Wu
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - F W J Chioh
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - K Tan
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - A Siau
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - M D Muthiah
- National University Health System, Singapore, Singapore
| | - Q F Chen
- Agency for Science, Technology and Research, Singapore, Singapore
| | - N S Tan
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - H H Ng
- Agency for Science, Technology and Research, Singapore, Singapore
| | - Y Y Dan
- National University Health System, Singapore, Singapore
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Wu KX, Yan WG, Tian T, Wang YF, Huang M. [Autophagic dysfunction contributes to α-synuclein accumulation in dopaminergic neurons induced by paraquat]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2020; 38:180-186. [PMID: 32306690 DOI: 10.3760/cma.j.cn121094-20190924-00543] [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 effects of Paraquat on autophagy level in SH-SY5Y cell and the mechanism of abnormal aggregation of α-synuclein. Methods: Human neuroblastoma cell (SH-SY5Y cell) was used as model of dopaminergic neurons in vitro. The cells were treated with different concentrations of PQ (0, 18.75, 37.5, 75, 150, 300, 600 μmol/L) for 24 hours, and induced by 150 μmol/L PQ for 0, 12, 24, 36, 48, 60, 72, 96 hours to detect the relative survival rate of cells and determine dose/time-effect relationship. The cells were treated with concentration of 0, 75, 150, 300, 600 μmol/L PQ for 24 hours, and induced by 150 μmol/L PQ for different hours to detect intracellular LDH activity. The expression levels of autophagy-related proteins(LC3I, LC3II, Beclin1 , Vps34 and p62) and α-synuclein were detected by Western blot. The gene expression level of α-synuclein was assayed by Real-time quantitative PCR. The expression level of α-synuclein was also evaluated by immunofluorescence. The cells were pretreated with 100 nmol/L autophagy inducer rapamycin (RAPA) for 6 hours. The expression levels of autophagy-related proteins and α-synuclein were detected by Western blot. Results: CCK8 assay showed PQ induced cell survival rate decrease in a time and dose dependent manner; Compared with control group, the activity of LDH in the cell supernatant increased significantly after PQ exposure (P<0.05) ; Western blot analysis showed the ratio of autophagy-related protein LC3II/LC3I, Beclin1 and Vps34 protein expression were significantly lower after PQ treatment while the expression of p62 protein was higher (P<0.05) ; The protein and gene expression of α-synuclein were increased significantly after PQ treatment (P <0.05) ; Immunofluorescence showed the fluorescence intensity of α- synuclein in cells was significantly enhanced (P <0.05) . Compared with PQ group, the expression levels of autophagy-related proteins LC3II/LC3I and Beclin1 were significantly increased whlie α-synuclein protein level was decreased after RAPA induction (P<0.05) . Similarly, the IF result showed the fluorescence signal of α- synuclein significantly decreased after RAPA induction (P<0.05) . Conclusion: Paraquat induced autophagy dysfunction in SH-SY5Y cells, which leads to an abnormal aggregation of α-synuclein.
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Affiliation(s)
- K X Wu
- School of Public Health and Management, Ningxia Medical University, Yinchuan 750004, China
| | - W G Yan
- School of Public Health and Management, Ningxia Medical University, Yinchuan 750004, China
| | - T Tian
- School of Public Health and Management, Ningxia Medical University, Yinchuan 750004, China
| | - Y F Wang
- School of Public Health and Management, Ningxia Medical University, Yinchuan 750004, China
| | - M Huang
- School of Public Health and Management, Ningxia Medical University, Yinchuan 750004, China
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Li YY, Wu KX, Tian T, Wang YF, Yan WG, Huang M. [Effect of low concentration paraquat on activation of mouse microglia M1/M2 phenotypes]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2020; 37:881-887. [PMID: 31937024 DOI: 10.3760/cma.j.issn.1001-9391.2019.12.001] [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 observe the effect of low concentration paraquat (PQ) on activation and phenotypic M1/M2 polarization of mouse microglia cells (BV2) . Methods: BV2 cells were used as model, and cultured in vitro were exposed to paraquat at designed concentrations of 0, 0.015, 0.03, 0.06, 0.12, 0.24, 0.48 μmol/L and 0.05 μmol/L 1-methyl-4-phenylpyridinium (MPP(+)) for 24 h, and cell viability was determined by CCK8 assay. After induced by 0, 0.015, 0.03, 0.06, 0.12 μmol/L PQ and 0.05 μmol/L MPP(+) for 24 h, the contents of tumor necrosis factor-α (TNF-α) , interleukin-6 (IL-6) and IL-1β in cell culture supernatant were determined by enzyme-linked inmunosorbent assay (ELISA) . Cell migration ability was determined by transwell. Immunofluorescence (IF) and flow cytometry were used to determine the phagocytic capacity of cells. Designed concentrations of 0, 0.03, 0.06, 0.12 μmol/L PQ and 0.05 μmol/L MPP(+) for 24 h, the protein expressions of M1 markers of BV2 (TNF-α, IL-6, IL-1β, Nitric oxide synthase-iNOS, CD86) and M2 markers of BV2 (Arginase type-1 Arg-1 and Mannose recepteor-CD206) were determined by Western Blot after PQ expourse (0, 0.03, 0.06, 0.12 μmol/L) and 0.05 μmol/L MPP(+) induction. Results: Compared with 0 μmol/L PQ group, proliferation activity of BV2 cells was significantly increased by 0.03~0.12 μmol/L PQ while inhibited by 0.48 μmol/L PQ (P<0.05) . The cell proliferation activity of cells treated with 0.03 μmol/L PQ was significantly increased in 24 hours (P<0.05) . ELISA showed that TNF-α, IL-6 and IL-1β contents in the cell supernatant of the PQ group were significantly higher than those of 0 μmol/L PQ group, especially in 0.03 and 0.06 μmol/L PQ exposed group (P<0.05) . The results of IF and flow cytometry showed that phagocytic capacity of 0.015, 0.03 and 0.06 μmol/L PQ group was significantly enhanced compared with 0 μmol/L PQ group (P<0.05) . Transwell showed that the cell invasion ability of 0.03, 0.06, 0.12 μmol/L PQ was significantly higher than that of 0 μmol/L PQ group (P<0.05) . Western blot showed that compared with 0 μmol/L PQ group, the expression levels of M1 markers TNF-α, IL-6, IL-1β, iNOS and CD86 were significantly increased in 0.03 and 0.06 μmol/L PQ exposed group, while the expression levels of M2 markers Arg-1 and CD206 protein were decreased in 0.06 and 0.12 μmol/L PQ exposed group (P<0.05) . Conclusion: Low concentration PQ can abnormally activate BV2 cell, making the transformation of BV2 cell into pro-inflammatory M1 type and inhibiting its transformation into anti-inflammatory M2 type.
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Affiliation(s)
- Y Y Li
- Department of Occupational Health and Environmental Hygiene, School of Public Health and Management, Ningxia Medical University, Yinchuan 750004, China
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Zhu CD, Guo MZ, Cai Q, Li YY, Wu KX, Huang M. [Role of MAPK signaling pathway in epithelial-mesenchymal transition of type II alveolar epithelial cells induced by Paraquat]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 36:561-567. [PMID: 30317802 DOI: 10.3760/cma.j.issn.1001-9391.2018.08.001] [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 roles of p38 mitogen-activated protein kinases (p38 MAPK) , extracellular regulated protein kinases (ERK) and c-Jun N-tenninal kinases (JNK) of MAPK signaling pathway in Paraquat-induced epithelial to mesenchymal transition (EMT) of type II alveolarepithelial cells. Methods: RLE-6NT cells were incubated with different concentrations of PQ (0, 25, 50, 100μmol/L) for 6, 12 and 24 h. Cell morphology alteration was observed under phase-contrast microscopy. Cell viability was determined using an MTT assay. Cell migration ability was detected using scratch wound assay. Protein expression of P-p38 MAP, P-Erk1/2, P-JNK, E-cad, ZO-1, Vimentin and а-SMA were detected by western blot. The level of genes related to fibrosis (COL-I, COL-III, FN and FSP-1) were analyzed via quantitative real-time RT-PCR. Results: Cell morphology started to undergo EMT changes with a phenotype characteristic of mesenchymal cells, including an elongated shape and a lack of tight cell-cell adhesions induced by 100μmol/L PQ treatment in a time-dependent manner. MTT showed that cell viability decreased with increasing PQ concentration (50、100、200、300 μmol/L PQ treatment for 24 h) and increasing treatment time (200 μmol/L PQ treatment for 6, 12, 24, 36, 48 h) . Compared to control group, the expressions of the epithelial phenotype marker E-cad and ZO-1 significantly decreased with PQ treatment (50, 100μmol/L) in a time-dependent manner (P<0.05) . Additionally, the level of the mesenchymal marker (a-SMA, vimentin) dramatically increased with PQ treatment in the same concentration-and time-dependent manner (P<0.05) . Cell migration ability was markedly increased after 24 h of 100 μmol/L PQ treatment compared to control (P<0.05) . The phosphorylated forms of p38 MAPK, Erk1/2, and JNK were increased at 24 h after stimulation with PQ (P<0.05) . This PQ induced (100 μmol/L) phosphorylation was markedly attenuated in the presence of the p38 MAPK, ERK and JNK inhibitors (SB-203580, SP-600125 and PD98059) respectively. Furthermore, RT-PCR showed that PQ significantly induced the upregulation expression of COL I and III mRNA, Fn, and FSP-1 mRNA (P<0.05) . Conclusion: PQ-induced pulmonary fibrosis occurs via EMT, which is mediated by the MAPK pathway.
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Affiliation(s)
- C D Zhu
- School of Public Health, Ningxia Medical University, Yinchuan 750004, China
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Xu YL, Wu KX, Wang Q, Yu PG, Su XM, Huang M. [The role of the AMPK-mTOR pathway in paraquat-induce autophagy in PC12 cells]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 36:801-807. [PMID: 30646639 DOI: 10.3760/cma.j.issn.1001-9391.2018.11.001] [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 regulation of AMPK-mTOR signal transduction pathway in paraquat-induced autophagy of pheochromocytoma cells (PC12) . Methods: The PC12 cell were treated with terminal concentrations of 0, 25, 50, 100, 200, 300 and 400 μmol/L PQ for 24 hours, and the cells were induced by 300 μmol/L PQ for different time (6, 12, 24, 48 h) . MTT was used to detect the relative survival rate of cells, and the dose/time-effect relationship was determined respectively. The cells were treated with PQ at concentrations of 0, 100, 200 and 300 μmol/L PQ for 24 hours, the lactate dehydrogenase (LDH) activity in the culture supernatant was detected by spectrophotometry. The expression and distribution of autophagic lysosomes were observed by MDC staining. The intracellular reactive oxygen species (ROS) was detected by dichlorofluorescein diacetate (DCFH-DA) . The expression of microtubule-related protein 1 light chain 3 (LC3) was measured by immunofluorescence. The protein level of LC3Ⅱ, p62, Beclin1 and p-AMPK, p-mTOR were detected by Western blot. Results: Compared with the control group, the cell survival rate of the 100, 200, 300, 400 μmol/L PQ group decreased significantly, and showed a dose-dependent pattern (P<0.05) . The survival rate of cells treated with 300 μmol/L PQ decreased significantly with the prolongation of exposure time (12, 24, 48 h) (P<0.05) . Compared with the control group, the activity of LDH in 100, 200, 300 μmol/L PQ-treated group were significantly higher while The fluorescence intensity of ROS was significantly increased (P<0.05) . MDC staining showed the density of autophagic lysosomes and fluorescence intensity in PQ-treated group significantly decreased (P<0.05) . Immunofluorescence results showed the LC3 fluorescence intensity of PQ-treated group decreased which was consistent with MDC staining results. Western blot showed that compared with the control group, the expression levels of autophagy related proteins LC3Ⅱand Beclin1 in PQ-treated group were significantly lower, while the expression level of p62 protein was higher (P<0.05) . p-AMPK protein level decreased and p-mTOR protein expression increased in 200 and 300μmol/L PQ-treatd groups, with statistically significant difference (P<0.05) . Conclusion: AMPK-mTOR signaling pathway played a regulatory role in PQ-induced decreased autophagy of PC12 cell.
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Affiliation(s)
- Y L Xu
- School of Public Health, Ningxia Medical University, Yinchuan 750004, China
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Cheung C, Wu KX, Pek N, Narmada BC, Chioh F, Heng CK, Chan MYY. P175Understanding genetic basis of coronary artery disease using personalised vascular model. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- C Cheung
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - K X Wu
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - N Pek
- Agency for Science, Technology and Research, Institute of Molecular and Cell Biology, Singapore, Singapore
| | - B C Narmada
- Agency for Science, Technology and Research, Institute of Molecular and Cell Biology, Singapore, Singapore
| | - F Chioh
- Nanyang Technological University, Lee Kong Chian School of Medicine, Singapore, Singapore
| | - C K Heng
- National University of Singapore, Singapore, Singapore
| | - MYY Chan
- National University of Singapore, Singapore, Singapore
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Sun J, Tian Y, Jiang RC, Dong XL, Wang Y, Wu WB, Wu KX, Zhang JN. [Study on the difference of blood coagulation function in patients with traumatic brain injury in plain and plateau area]. Zhonghua Yi Xue Za Zhi 2016; 96:3125-3128. [PMID: 27852408 DOI: 10.3760/cma.j.issn.0376-2491.2016.39.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: In this study, we tested platelet count (PC), prothrombin time (PT), activated partial thromboplastin time (APTT), and other indicators of coagulation function, and revealed their difference in patients with traumatic brain injury (TBI) between plain and plateau area. Base on the results, we may provide research basis for the therapy of TBI associated coagulopathy in different areas. Methods: 151 TBI patients from Tianjin Medical University General Hospital, and 74 from People's Hospital of Tibet Autonomous Region in the period from Dec 2013 to Dec 2015 were enrolled.Coagulation function, including PC, platelet distribution width (PDW), mean platelet volume (MPV), platelet - large cell ratio (P- LCR), PT, APTT, fibrinogen (FIB), and D- Dimer were tested within 8 h. The difference in patients with TBI between plain and plateau areas were compared and analyzed. Results: Compared with plain area, the PC of patients with TBI in plateau area is lower [(168±49)×109/L vs (196±72)×109/L, P<0.05], while PT and APTT were extended [(13.5±1.3) s vs (12.0±4.0) s, (38±4) s vs(27±6) s, P<0.01]. On the other hand, FIB increases [(3.1±1.2) g/L vs (2.6±1.0) g/L, P<0.01] and D-Dimer decreases [(3.1±3.3) μg/L vs (4.7±3.6) μg/L, P<0.01] in plateau area compared with plain area. Conclusion: Due to the people of plateau area living in hypoxia state, the coagulation function is activated for a long time.Once TBI happens, the platelets and coagulation factors may be excessive consumption, resulting in hypocoagulable state and high risk of rebleeding, while the fibrinolysis system in patients with TBI of plateau area is not activated obviously.Therefore, it should give full consideration to these differences in the treatment of patients with TBI in plateau area, instead of directly copying the standard therapy of the people in plain area.The treatment recommendations should primarily supplement coagulation materials, and antifibrinolytics may unlikely have the therapy effect.
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Affiliation(s)
- J Sun
- Department of Neurosurgery, Tianjin Medical University General Hospital & Tianjin Neurological Institute; Key Laboratory of Post-trauma Neuro-repair & Regeneration in Central Nervous System, Ministry of Education; Tianjin Key Laboratory of Injuries, Variations & Regeneration of Nervous System, Tianjin 300052, China
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Gao X, Zhou Y, Wu KX, Ding YH, Fan DM, Yang M, Zhang YZ, Zhang YJ, Xiong DS. Inhibitory effects of indirubin derivative PHII-7 on invasion and migration in metastatic cancer. Neoplasma 2015; 62:209-29. [PMID: 25591586 DOI: 10.4149/neo_2015_026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
UNLABELLED PHII-7, a derivative of indirubin, showed significant anti-cancer activities in vivo and in vitro. We asked whether treating human metastatic cancers and multidrug resistant cancer with PHII-7 would inhibit their invasion and migration. Cell growth was tested by MTT assay and colony formation assay. Apoptosis was examined by flow cytometry. Transwell-based assay and wound healing assay were used to examine cell invasion and migration. Real-time PCR assay and western blot assay were performed to test gene expression on mRNA and protein level, respectively. Firstly, we confirmed that MCF-7/ADR cells showed more invasive and migratory properties compared with MCF-7 cells which were associated with several EMT markers, such as E-cadherin, Slug and vimentin. Secondly, we found that slightly toxic doses of PHII-7 decreased the number of cells that invaded a model epithelial basement membrane and that migrated by switching the molecular signature of the cells from mesenchymal to epithelial. And PHII-7 significantly regulated expression of several epithelial-mesenchymal transition (EMT)-related genes, including E-cadherin, Slug, β-catenin and vimentin. Thirdly, compared with control, PHII-7 inhibited cell proliferation in a time- and dose-dependent manner. Higher doses of PHII-7 also induced apoptosis through activating PARP, caspase-9 and caspase-3. PHII-7 significantly inhibited invasion and migration in both metastatic cancers and multidrug resistant cancer. Our results may provide several data for future application of PHII-7 on drug design and patients treatment. KEYWORDS PHII-7, invasion, migration, multidrug resistance, epithelial-mesenchymal transition.
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He ZZ, Xu DJ, Huo ML, Chen JY, Wu KX. [The antibiotic effect of Pseudomonas jinanensis sp. nov]. Wei Sheng Wu Xue Bao 1989; 29:452-9. [PMID: 2629296] [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
The Pseudomonas jinanensis has been isolated from soil and screened by antibioticgram assay and spermatogonial assay. It has certain antibiotic properties. The metabolite which has been produced is certainly effective against Staphylococcus aureus and some other positive germs. The preparation of Pseudomonas jinanensis vaccine, namely PJV. It's biological activity on the growth of tumor-bearing mice and the murine spermatogenesis cell. It is considered that enhancement of nonspecific immunologic function of the host might increase the efficacy of praziquantel on schistosomiasis in mice. PJV has certainly produced effectiveness against malignant pleural effusion (effective rate was 76.5%), cancer of lung (effective rate was 58.3%), many solid kinds of cancer (effective rate was 52.1%), and the total effective rate was 64.2%. It could increase the sensitivity of cancer cells to radiation. PJV could stimulate the animal (rabbit) to develop specific antibody. PJV might belong to the class of immunomodulating agents.
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