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Zhou J, Xu Q, Liu H, Miao J, Bian C, Wei Y, Wang W, Jiang S. Prognostic value of tumor‑associated CD177 + neutrophils in lung adenocarcinoma. Oncol Lett 2024; 27:189. [PMID: 38495836 PMCID: PMC10941067 DOI: 10.3892/ol.2024.14322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 02/13/2024] [Indexed: 03/19/2024] Open
Abstract
The aim of the present study was to detect CD177+ neutrophils in tumor tissues and analyze their association with the clinical characteristics and prognosis of patients with lung adenocarcinoma (LUAD). Immunohistochemistry was used to detect CD177+ neutrophils in tumors and adjacent tissues of 16 patients with LUAD who underwent curative surgical resection. A total of 120 patients with LUAD were recruited, and their clinical data were collected; survival follow-up was performed. CD177+ neutrophils in tumor tissues were detected via immunohistochemistry, and the association between CD177+ neutrophils and clinical characteristics was analyzed. The density of CD177+ neutrophils in tumor tissues and adjacent tissues of patients with LUAD was analyzed using t-test, and the association between CD177+ neutrophils and clinical characteristics was analyzed through the Chi-square test. Survival was calculated using the Kaplan-Meier survival rate curve. Finally, the association between these indicators and the survival of LUAD patients was evaluated using Cox regression analysis. CD177+ neutrophil infiltration was significantly higher in LUAD tumor tissues, and the high density of CD177+ neutrophils was associated with the clinical characteristics of TNM stage, tumor differentiation and poor progression-free and overall survival in LUAD. In conclusion, tumor-associated CD177+ neutrophils associated with malignant progression and poor prognosis may be independent and unfavorable prognostic biomarkers for LUAD.
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Affiliation(s)
- Jinhua Zhou
- Department of Respiratory Medicine, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
- Department of Respiratory Medicine, Jining First People's Hospital, Jining, Shandong 272000, P.R. China
| | - Qingxia Xu
- Department of Pathology, Jining First People's Hospital, Jining, Shandong 272000, P.R. China
| | - Huan Liu
- Department of Emergency Internal Medicine, Jining First People's Hospital, Jining, Shandong 272000, P.R. China
| | - Jianlong Miao
- Department of Respiratory Medicine, Jining First People's Hospital, Jining, Shandong 272000, P.R. China
| | - Cuixia Bian
- Department of Respiratory Medicine, Jining First People's Hospital, Jining, Shandong 272000, P.R. China
| | - Yutao Wei
- Department of Thoracic Surgery, Jining First People's Hospital, Jining, Shandong 272000, P.R. China
| | - Wei Wang
- Department of Respiratory Medicine, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Shulong Jiang
- Clinical Medical Laboratory Center, Jining First People's Hospital, Jining, Shandong 272000, P.R. China
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Zhang L, Bian C. Modified silicone hourglass stents for the treatment of benign subglottic stenosis: a case series. J Thorac Dis 2023; 15:7112-7118. [PMID: 38249913 PMCID: PMC10797404 DOI: 10.21037/jtd-23-900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 10/27/2023] [Indexed: 01/23/2024]
Abstract
Background Benign subglottic stenosis has been a challenging illness to treat and manage in clinical because of its special anatomical location, and easy recurrence of the condition, which can cause life-threatening asphyxia. For patients who are not suitable for surgery or in urgent need of preoperative transitional treatment, respiratory endoscopy-guided stent placement becomes an alternative treatment option. Case Description Clinical data were collected from four patients who received treatment at the Jining First People's Hospital due to benign subglottic stenosis, which was achieved after tracheal intubation/tracheotomy. All patients were male, admitted with shortness of breath, with an average of 45±8.95 years. Among them, three patients refused the surgery, and one patient was unable to tolerate the surgery. Despite repeated intervention under bronchoscopy, airway stability was still not maintained. By inserting modified hourglass silicone stents, the patient's symptoms were improved and the clinical efficacy was satisfactory. Regular follow-up showed good stent position and no granulomatous growth at the ends of the stents. Conclusions This is an initial report of improved hourglass stents used for the treatment of benign subglottic airway stenosis. In these cases, the modified hourglass stents had good efficacy and fewer complications and were also accepted by patients.
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Bian C, Kusuya Y, Sklenář F, D’hooge E, Yaguchi T, Ban S, Visagie C, Houbraken J, Takahashi H, Hubka V. Reducing the number of accepted species in Aspergillus series Nigri. Stud Mycol 2022; 102:95-132. [PMID: 36760462 PMCID: PMC9903907 DOI: 10.3114/sim.2022.102.03] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 12/06/2022] [Indexed: 12/24/2022] Open
Abstract
The Aspergillus series Nigri contains biotechnologically and medically important species. They can produce hazardous mycotoxins, which is relevant due to the frequent occurrence of these species on foodstuffs and in the indoor environment. The taxonomy of the series has undergone numerous rearrangements, and currently, there are 14 species accepted in the series, most of which are considered cryptic. Species-level identifications are, however, problematic or impossible for many isolates even when using DNA sequencing or MALDI-TOF mass spectrometry, indicating a possible problem in the definition of species limits or the presence of undescribed species diversity. To re-examine the species boundaries, we collected DNA sequences from three phylogenetic markers (benA, CaM and RPB2) for 276 strains from series Nigri and generated 18 new whole-genome sequences. With the three-gene dataset, we employed phylogenetic methods based on the multispecies coalescence model, including four single-locus methods (GMYC, bGMYC, PTP and bPTP) and one multilocus method (STACEY). From a total of 15 methods and their various settings, 11 supported the recognition of only three species corresponding to the three main phylogenetic lineages: A. niger, A. tubingensis and A. brasiliensis. Similarly, recognition of these three species was supported by the GCPSR approach (Genealogical Concordance Phylogenetic Species Recognition) and analysis in DELINEATE software. We also showed that the phylogeny based on benA, CaM and RPB2 is suboptimal and displays significant differences from a phylogeny constructed using 5 752 single-copy orthologous proteins; therefore, the results of the delimitation methods may be subject to a higher than usual level of uncertainty. To overcome this, we randomly selected 200 genes from these genomes and performed ten independent STACEY analyses, each with 20 genes. All analyses supported the recognition of only one species in the A. niger and A. brasiliensis lineages, while one to four species were inconsistently delimited in the A. tubingensis lineage. After considering all of these results and their practical implications, we propose that the revised series Nigri includes six species: A. brasiliensis, A. eucalypticola, A. luchuensis (syn. A. piperis), A. niger (syn. A. vinaceus and A. welwitschiae), A. tubingensis (syn. A. chiangmaiensis, A. costaricensis, A. neoniger and A. pseudopiperis) and A. vadensis. We also showed that the intraspecific genetic variability in the redefined A. niger and A. tubingensis does not deviate from that commonly found in other aspergilli. We supplemented the study with a list of accepted species, synonyms and unresolved names, some of which may threaten the stability of the current taxonomy. Citation: Bian C, Kusuya Y, Sklenář F, D'hooge E, Yaguchi T, Ban S, Visagie CM, Houbraken J, Takahashi H, Hubka V (2022). Reducing the number of accepted species in Aspergillus series Nigri. Studies in Mycology 102: 95-132. doi: 10.3114/sim.2022.102.03.
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Affiliation(s)
- C. Bian
- Graduate School of Medical and Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Y. Kusuya
- Medical Mycology Research Center, Chiba University, Chiba, Japan;, Biological Resource Center, National Institute of Technology and Evaluation, Kisarazu, Japan
| | - F. Sklenář
- Department of Botany, Faculty of Science, Charles University, Prague, Czech Republic;, Laboratory of Fungal Genetics and Metabolism, Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic
| | - E. D’hooge
- BCCM/IHEM collection, Mycology and Aerobiology, Sciensano, Bruxelles, Belgium
| | - T. Yaguchi
- Medical Mycology Research Center, Chiba University, Chiba, Japan
| | - S. Ban
- Medical Mycology Research Center, Chiba University, Chiba, Japan
| | - C.M. Visagie
- Department of Biochemistry, Genetics, and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - J. Houbraken
- Westerdijk Fungal Biodiversity Institute, Utrecht, the Netherlands
| | - H. Takahashi
- Medical Mycology Research Center, Chiba University, Chiba, Japan;, Molecular Chirality Research Center, Chiba University, Chiba, Japan;, Plant Molecular Science Center, Chiba University, Chiba, Japan,*Corresponding authors: H. Takahashi, ; V. Hubka,
| | - V. Hubka
- Medical Mycology Research Center, Chiba University, Chiba, Japan;, Department of Botany, Faculty of Science, Charles University, Prague, Czech Republic;, Laboratory of Fungal Genetics and Metabolism, Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic;,*Corresponding authors: H. Takahashi, ; V. Hubka,
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Tang LH, Xiong Y, Fang L, Bian C, Zhang Q. [Occupational stress of air traffic controllers and its influencing factors]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022; 40:668-673. [PMID: 36229211 DOI: 10.3760/cma.j.cn121094-20201225-00717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To investigate the occupational stress status of air traffic controllers (ATC) and analyze its influencing factors. Methods: By using cluster sampling method, 457 ATCs in an air traffic management bureau were selected as the investigation objects. The job content questionnaire (JCQ) and the effort reward imbalance questionnaire (ERI) were used to measure work requirements independent imbalance type and ERI type occupational stress separately and analyze the influencing factors. Results: Of the 457 ATCs, 81.84% (374/457) ATGs had work requirements independent imbalance type of occupational stress and 84.46% (386/457) ATGs had ERI type occupational stress. Univariate analysis showed that the factors of marital status, degree of education, age, length of service, title, job post, family monthly income, views on regular training, occurrence of emergency or unsafe events in last month and monthly night shift frequency had various degrees of influence on the different factor scores of JCQ and ERI (P<0.01) . Logistic regression analysis showed that the level of JCQ type occupational stress of ATCs with junior titles and probationers was higher than those of intermediate/senior titles (P=0.000, 0.000) ; The ERI type occupational stress of probationers and junior titles ATCs was lower than those with intermediate/senior titles (P=0.000) . The ERI and JCQ type occupational stress level of tower post ATCs was higher than that of other two job post ATCs (P=0.001, 0.000, 0.000, 0.000) . The ATCs considering regular training had more disadvantages than advantages showed lower ERI type occupational stress level than those considering more advantages than disadvantages (P=0.000) . The ERI type occupational stress level of ATCs who experienced emergency or unsafe events in last month was higher than those who didn't (P=0.007) . Conclusion: A large proportion of ATCs had occupational stress. Management should adjust its policies and pay were attention to occupational stress of ATLs.
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Affiliation(s)
- L H Tang
- Civil Aviation Management Institute of China,Beijing 100102, China
| | - Y Xiong
- Qinhuangdao Airport Branch of Hebei Airport Management Group Co. Ltd, Qinhuangdao 066000, China
| | - L Fang
- Qinhuangdao Airport Branch of Hebei Airport Management Group Co. Ltd, Qinhuangdao 066000, China
| | - C Bian
- China Aviation Fuel Co. Ltd. Office in PetroChina North China Petrochemical Branch, Renqiu 062550, China
| | - Q Zhang
- Northwest Region Air Traffic Management Bureau of Civil Aviation of China, Xi'an 710082, China
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Ma Y, Bian C, Song D, Yao G, Nie R. 3,4-Methylenedioxymethamphetamine causes retinal damage in C57BL/6J mice. Hum Exp Toxicol 2020; 39:1556-1564. [PMID: 32552070 DOI: 10.1177/0960327120930253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
3,4-Methylenedioxymethamphetamine (MDMA) is a powerfully addictive psychostimulant with pronounced effects on the central nervous system, but the precise mechanism of MDMA-induced toxicity remains unclear, specifically on the retina. This study was performed to investigate the effects of MDMA treatment on the retina and explore the underlying mechanism. C57BL/6J mice were randomly divided into control and MDMA groups. Mice were treated with MDMA at progressively increasing doses (1-6 mg/kg) intraperitoneally 4 times per day. Electroretinography was used to test the retinal function. Pathological changes of the retina were examined by toluidine blue staining and terminal deoxynucleotidyl transferase deoxyuridine triphosphate nick end labeling assay. Enzyme-linked immunosorbent assays were used to measure the levels of cytokines in the retina. Real-time polymerase chain reaction and Western blot were used to measure gene and protein expression in the retina, respectively. Our study showed that MDMA treatment impaired retinal function and decreased retinal thickness. MDMA treatment also increased transforming growth factor β as well as inflammatory factors in the retina. Moreover, MDMA treatment increased protein expression of matrix metalloproteinases (MMPs) and decreased tight junction protein expression in the retina. Our study indicated that treatment of MDMA caused retinal damage in C57BL/6J mice, associated with an increase of MMPs and a decrease of tight junction proteins.
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Affiliation(s)
- Y Ma
- Department of Ophthalmology, Tai'an City Central Hospital, Tai'an, People's Republic of China
| | - C Bian
- Department of Ophthalmology, Tai'an City Central Hospital, Tai'an, People's Republic of China.,Department of Ophthalmology, The First People's Hospital of Tai'an, Tai'an, People's Republic of China
| | - D Song
- Department of Ophthalmology, Tai'an City Central Hospital, Tai'an, People's Republic of China
| | - G Yao
- Department of Ophthalmology, The First People's Hospital of Tai'an, Tai'an, People's Republic of China
| | - R Nie
- Department of Geriatrics III, Tai'an City Central Hospital, Tai'an, People's Republic of China
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Affiliation(s)
- Y Liu
- Department of Infectious Diseases, the Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - Y H Xu
- Department of Gastroenterology, the Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - J Xu
- Department of Pathology, the Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - X Y Huang
- Department of Infectious Diseases, the Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - H Yuan
- Department of Gastroenterology, the Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - C Bian
- Department of Infectious Diseases, the Affiliated Hospital of Qingdao University, Qingdao 266555, China
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Bian C, Yuan L, Gai H. A long non-coding RNA LINC01288 facilitates non-small cell lung cancer progression through stabilizing IL-6 mRNA. Biochem Biophys Res Commun 2019; 514:443-449. [PMID: 31054777 DOI: 10.1016/j.bbrc.2019.04.132] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 04/05/2019] [Accepted: 04/18/2019] [Indexed: 12/24/2022]
Abstract
The non-small cell lung cancer (NSCLC) denotes a malignant type of cancers. Long non-coding RNAs (lncRNAs) can actively participate in cancer development. However, the exact role of lncRNAs in NSCLC remains largely elusive. In current work, we report a novel intergenic lncRNA LINC01288 involved in NSCLC. We found that LINC01288 is frequently upregulated in NSCLC samples and cell lines. LINC01288 significantly promotes viability, migration, xenograft tumor growth and metastasis in vitro and in vivo. LINC01288 physically interacts with the IL-6 mRNA and increase the stability of IL-6 transcripts. Subsequently, the autocrine induction of IL-6 and enhanced STAT3 activation may facilitate NSCLC progression. Collectively, our data have demonstrated that LINC01288 serves as a crucial mediator of IL-6/STAT3 pathway and created novel interplay between lncRNAs and tumor development.
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Affiliation(s)
- Cuixia Bian
- Department of Respiratory Medicine, Jining First People's Hospital, Jining, 272000, Shandong, China
| | - Luna Yuan
- Department of Respiratory Medicine, Jining First People's Hospital, Jining, 272000, Shandong, China.
| | - Huirong Gai
- Department of Medicine II, Qingdao Central Hospital, Qingdao, 266042, Shandong, China
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Gong QL, Bian C, Liu H. [A retrospective analysis on occult neck lymphatic metastasis in early tongue cancer]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 51:773-775. [PMID: 27765109 DOI: 10.3760/cma.j.issn.1673-0860.2016.10.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the number and level of occult neck lymphatic metastasis for squamous cell carcinoma of tongue in clinical stage Ⅰ/Ⅱ, and the relationship between cell differentiation and occult neck lymphatic metastasis. Methods: A total of 101 cases diagnosed preoperatively as having squamous cell carcinoma of tongue in clinical stage Ⅰ/Ⅱ (cT1/T2N0M0) between January 2005 and April 2015 were analysed retrospectively. Whether presence of occult neck lymphatic metastasis in these cases was studied. Results: Occult neck lymphatic metastases were found in 22 (21.78%) of 101 cases, 10 men and 12 women, with an age range of 22 to 83 years. There was not statistically significant association between tumor size or cell differentiation and occult neck lymphatic metastasis (P>0.05). The metastasis occurred most commonly in level Ⅱ, followed by levelsⅠ, Ⅲ and Ⅳ. There was no lymph node metastasis in Level Ⅴ. There were total 20 cases with occult neck lymphatic metastasis in at least one of levelⅠ, Ⅱ, Ⅲ(90.9%), One of these case was skipping metastasis in level Ⅲ(4.6%). Conclusion: The early tongue cancer has a high rate of occult lymph metastasis, which occurs commonly in levels Ⅱ, Ⅰ and Ⅲ, but there is not significant association between the metastasis and tumor size or cell differentiation.
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Affiliation(s)
- Q L Gong
- Department of Head and Neck Surgery, Fujian Provincial Cancer Hospital, affiliated to Fujian Medical University, Fuzhou 350014, China
| | - C Bian
- Department of Head and Neck Surgery, Fujian Provincial Cancer Hospital, affiliated to Fujian Medical University, Fuzhou 350014, China
| | - H Liu
- Department of Head and Neck Surgery, Fujian Provincial Cancer Hospital, affiliated to Fujian Medical University, Fuzhou 350014, China
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Zhang Y, Bian C, Wu J, Zhao J, Wang J, Liu T, Liu L, Dong L. [IL-33 promotes airway remodeling in a mouse model of asthma via ERK1/2 signaling pathway]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2016; 32:590-594. [PMID: 27126934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To explore the role of IL-33 in asthmatic airway remodeling. METHODS Male BALB/c mice were randomly divided into 3 groups: a control group, an ovalbumin (OVA) group, and an anti-IL-33 antibody combined with OVA group. The airway remodeling features in mice were observed by HE staining. In addition, the expressions of IL-33, alpha smooth muscle actin (α-SMA), and type 1 collagen (Col1) in the airway of mice were detected by immunohistochemistry and Western blotting. Finally, Western blotting was used to determine the activation of extracellular signal-regulated kinase 1/2 (ERK1/2) and mitogen- and stress-activated protein kinase 1 (MSK1) in the lungs of mice. In vitro, human lung fibroblasts (HLF-1) were pretreated with the ERK1/2 inhibitor U0126 or the MSK1 inhibitor H89 respectively, and then treated with the human recombinant IL-33 (rIL-33). Then real-time quantitative PCR and Western blotting were used to test the expressions of α-SMA and Col1. Immunofluorescence cytochemistry and Western blotting were also used to observe the phosphorylation of ERK1/2 and MSK1 in HLF-1 cells. RESULTS The pre-treatment with the ERK1/2 inhibitor U0126 or anti-IL-33 antibody significantly abolished the OVA-induced airway remodeling, increased expressions of IL-33, α-SMA, Col1, and phosphorylation of ERK1/2 and MSK1 in the airway of mice. In vitro, the increased expressions of α-SMA and Col1 and the phosphorylation of ERK1/2 and MSK1 induced by rIL-33 in HLF-1 cells were markedly inhibited by the pre-treatment with U0126 or H89. CONCLUSION IL-33 promotes airway remodeling in asthmatic mice via the ERK1/2-MSK1 signaling pathway.
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Affiliation(s)
- Yuanyuan Zhang
- Department of Pulmonary Diseases, Qilu Hospital, Shandong University, Jinan 250012, China
| | - Cuixia Bian
- Jidong Section, Yankuang Group General Hospital, Jining 272072, China
| | - Jinxiang Wu
- Department of Pulmonary Diseases, Qilu Hospital, Shandong University, Jinan 250012, China
| | - Jiping Zhao
- Department of Pulmonary Diseases, Qilu Hospital, Shandong University, Jinan 250012, China
| | - Junfei Wang
- Department of Pulmonary Diseases, Qilu Hospital, Shandong University, Jinan 250012, China
| | - Tian Liu
- Department of Pulmonary Diseases, Qilu Hospital, Shandong University, Jinan 250012, China
| | - Lin Liu
- Department of Pulmonary Diseases, Qilu Hospital, Shandong University, Jinan 250012, China
| | - Liang Dong
- Department of Pulmonary Diseases, Qilu Hospital, Shandong University, Jinan 250012, China. *Corresponding author, E-mail:
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Wang Q, Ma H, Peng H, He L, Bian C, Zhao X. Risk factors for intra-operative haemorrhage and bleeding risk scoring system for caesarean scar pregnancy: a case–control study. Eur J Obstet Gynecol Reprod Biol 2015; 195:141-145. [DOI: 10.1016/j.ejogrb.2015.06.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 04/19/2015] [Accepted: 06/24/2015] [Indexed: 10/23/2022]
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Guo Q, Cheng J, Zhang J, Su B, Bian C, Lin S, Zhong C. Delayed post-injury administration of C5a improves regeneration and functional recovery after spinal cord injury in mice. Clin Exp Immunol 2013; 174:318-25. [PMID: 23855891 DOI: 10.1111/cei.12175] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/09/2013] [Indexed: 12/13/2022] Open
Abstract
The activation of a complement system can aggravate the secondary injury after spinal cord injury (SCI). However, it was reported recently that the activation of a complement could have both a secondary injury and a neuroprotective effect, in which C5a is the most important factor, but there is no direct evidence for this dual effect of C5a after SCI. In order to investigate the potential neuroprotective effect of C5a after SCI, in this study ectogenic C5a was injected intraperitoneally before/after SCI in vivo, or administrated to mechanically injured neurones in vitro; following this, neurone apoptosis, neurite outgrowth, axonal regeneration and functional recovery were investigated. The in-vivo experiments indicated that, following treatment with C5a 24 h before or immediately after injury, locomotor function was impaired significantly. However, when treatment with C5a took place 24 h after injury, locomotor function improved significantly. In-vitro experiments indicated that a certain concentration of C5a (50-100 nM) could inhibit caspase-3-mediated neurone apoptosis by binding to its receptor CD88, and that it could even promote the neurite outgrowth of uninjured neurones. In conclusion, delayed post-injury administration of C5a within a certain concentration could exert its neuroprotective effect through inhibiting caspase-3-mediated neurone apoptosis and promoting neurite outgrowth of uninjured neurones as well. These data suggest that C5a may have opposite functions in a time- and concentration-dependent manner after SCI. The dual roles of C5a have to be taken into account when measures are taken to inhibit complement activation in order to promote regeneration after SCI.
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Affiliation(s)
- Q Guo
- Department of Neurobiology, Chongqing Key Laboratory of Neurobiology, Third Military Medical University, Chongqing, China
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Luo T, Cui S, Bian C, Yu X. DNA double-strand break repair is activated in carotid artery restenosis. Cell Mol Biol (Noisy-le-grand) 2013; Suppl 59:OL1869-OL1875. [PMID: 24120114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Accepted: 09/30/2013] [Indexed: 06/02/2023]
Abstract
Carotid stenosis is a narrowing or constriction of the inner surface of the carotid artery, usually caused by atherosclerosis. In the past decades, carotid angioplasty and stenting (CAS) has been developed into a credible option for the patients with carotid stenosis. However, restenosis remains a severe and unsolved issue after CAS treatment. Currently, the molecular mechanisms involved in the restenosis are still largely unclear. In this study, we found that the double-strand DNA breaks (DSBs) were induced by oxidative stress in the human carotid artery with restenosis by examining the level of γH2AX in the artery tissues. We further analyzed the activation of DNA damage repair pathways in the carotid restenosis. Our results suggest that non-homologues end joining (NHEJ), but not homologous recombination (HR), is mainly activated in the artery tissues with restenosis. Our results may provide clues to develop a new therapeutic strategy for carotid artery restenosis following CAS treatment.
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Affiliation(s)
- T Luo
- Capital Medical University Vascular Surgery Department of Xuan Wu Hospital, Institute of Vascular Surgery Beijing China
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Guo Q, Cheng J, Zhang H, Zhang J, Su B, Bian C, Lin S. Expressions of C5a and its receptor CD88 after spinal cord injury in C3-deficient mice. Scand J Immunol 2013; 77:224-9. [PMID: 23033813 DOI: 10.1111/sji.12001] [Citation(s) in RCA: 3] [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] [Received: 03/09/2012] [Accepted: 09/20/2012] [Indexed: 12/13/2022]
Abstract
The activation of complement system can aggravate the secondary injury after spinal cord injury (SCI). Our previous study indicates that the interception of complement activation by C3 deficiency can reduce the secondary injury and improve the regeneration and functional recovery after SCI. However, recently, it was reported that C5a which was generated during the complement activation pathways also had a protective effect on neurons, but whether it has the similar effect after SCI is unknown. To investigate the possibility and mechanism of the protective effect of C5a on neurons, it is necessary to study the expression profiles of C5a and its receptor CD88 after SCI and the influence on their expression when C3 was knocked out. By immunohistochemistry and Western blot, we found that in wild-type (WT) mice, both the expression of C5a and its receptor CD88 increased significantly, and there were two peaks during their expression after SCI. However, in C3-deficient mice, the expression of C5a still increased after SCI, although it was lower than that in WT group at every time points after SCI, and the expression of CD88 remained stable. Our study suggests that the expressions of C5a and CD88 can be inhibited in different degrees after SCI when the activation of complement system is blocked through C3 deficiency, which can reduce the secondary injury caused by C5a after SCI on one hand but deprive neurons of the possible protective effect from C5a on the other hand.
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Affiliation(s)
- Q Guo
- Department of Neurobiology, Chongqing Key Laboratory of Neurobiology, Third Military Medical University, Chongqing, China.
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Zhang J, Gui Y, Yuan T, Bian C. UP-2.065: Expression of GAT1 in Male Reproductive System and Its Effects on Reproduction in Mice. Urology 2009. [DOI: 10.1016/j.urology.2009.07.284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Bian C, Lin J, Li XC, Wang YF, Hu HQ, Chen P. Telmisartan-enhanced hypercholesterolaemic serum-induced vascular endothelial growth factor expression in immortalized human umbilical vascular endothelial cells. Scand J Clin Lab Invest 2008; 67:619-31. [PMID: 17852837 DOI: 10.1080/00365510601173161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To clarify whether hypercholesterolaemia can increase vascular endothelial growth factor (VEGF) expression in human umbilical vascular endothelial cells (HUVECs) through the phosphatidylinositol 3-kinase (PI3K) pathway, and whether a special angiotensin II receptor blocker, telmisartan, can attenuate VEGF expression induced by hypercholesterolaemia. METHODS Levels of VEGF expression, PI3K activity and angiogenesis in vitro were determined by various methods after HUVECs were incubated with hypercholesterolaemic serum or combined with telmisartan and/or wortmannin. RESULTS We found that hypercholesterolaemic serum (cholesterol > or = 0.08 mmol/L) can increase VEGF expression in HUVECs and that telmisartan cooperates with hypercholesterolaemic serum in promoting VEGF expression. The increased VEGF expression was associated with enhanced PI3K activity and could be significantly inhibited by wortmannin, a potent PI3K inhibitor. Likewise, hypercholesterolaemic serum significantly promoted angiogenesis in vitro, which could be inhibited when PI3K activity was suppressed. CONCLUSIONS Our study suggests that hypercholesterolaemic serum induces VEGF expression through PI3K in HUVECs and that telmisartan cooperates with hypercholesterolaemia in promoting VEGF expression.
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Affiliation(s)
- C Bian
- Department of Cardiology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Zhang B, Eto S, Fan P, Bian C, Shimoji E, Saito T, Saku K. Paraoxonase (Pon1) Q192R polymorphism and serum Pon1 activity in diabetic patients on maintenance hemodialysis. Clin Nephrol 2004; 60:257-65. [PMID: 14579940 DOI: 10.5414/cnp60257] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Patients with diabetic nephropathy have an increased risk of coronary heart disease (CHD). Paraoxonase (Pon1) is a high-density lipoprotein- (HDL) associated enzyme that protects low-density lipoprotein from oxidation and also protects against atherosclerosis. We investigated the relationship of serum Pon1 activity, Pon1 Q192R polymorphism and HDL-C level to type 2 diabetes mellitus (DM) in patients on maintenance hemodialysis (HD). DM patients (n = 56, F/M = 17/39, aged 64.5 +/- 7.5 years) and non-DM patients (n = 89, F/M = 28/61, aged 62.7 +/- 8.3 years) under HD were included in this study. Salt-stimulated serum Pon1 activities were measured using paraoxon as a substrate. Pon1 Q192R polymorphism was detected by the mutagenically separated polymerase chain reaction. DM patients on HD had significantly lower HDL-C levels and serum Pon1 activities than non-DM patients on HD (657 +/- 277 vs. 763 +/- 257 IU/l, p < 0.01). The distribution of Pon1 Q 192R genotypes in all subjects did not differ from that predicted from the Hardy-Weinberg equilibrium. Serum Pon1 activities in both DM and non-DM patients on HD were regulated by Pon1 Q192R polymorphism: RR > QR > QQ. However, the reduced Pon1 activities in DM patients on HD were related to DM independent of the Pon1 genotype: reduced Pon1 activity was related to DM in RR carriers. Serum Pon1 activities were positively correlated with HDL-C levels. The association between HDL-C and DM in hemodialyzed patients was independent of Pon1 activity as assessed by an analysis of variance. But the relation between Pon1 activity and DM was modified by HDL-C levels: significantly when HDL-C was below 50 mg/dl, but not significantly when HDL-C was above 50 mg/dl. The results of a logistic regression analysis show that reduced serum Pon1 activities and low HDL-C levels were additively associated with DM. In conclusion, Pon1 status and HDL levels are independently associated with DM in patients on hemodialysis and may contribute to the increased risk of CHD in diabetic nephropathy.
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Affiliation(s)
- B Zhang
- Department of Cardiology, Fukuoka University School of Medicine, Fukuoka University, Fukuoka, Japan.
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Ma X, Zhang Z, Bian C, He B. [Elimination of noise in ICP-AES signals using wavelet transform]. Guang Pu Xue Yu Guang Pu Fen Xi 2000; 20:510-513. [PMID: 12945362] [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: 05/24/2023]
Abstract
Wavelet transform was applied to the processing of noisy signal in ICP-AES. The noise was successfully eliminated and smooth spectra were obtained. The ratios of signal-to-noise were enhanced, the accuracies of analytical results and the detection limits were improved.
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Affiliation(s)
- X Ma
- Department of Chemisity, Zhongshan University, Analysis and Testing Center, Guangdong University of Technology, Guangzhou
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Dou J, Yu S, Bian C. [Clinical analysis of 19 patients with pleural mesothelioma]. Zhonghua Zhong Liu Za Zhi 1998; 20:387-8. [PMID: 10921040] [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: 02/17/2023]
Abstract
OBJECTIVE To summarize the experience in the diagnosis of pleural mesothelioma. METHODS Analysing the clinical data of 19 patients with pleural mesothelioma, including age, history of exposure to asbestos, clinical manifestations, imaging and laboratory examinations and metastases. RESULTS None of the 19 patients had history of exposure to asbestos. Eight cases(42.1%) had no obvious thoracodynia, 9 cases(47.4%) had pleural effusion limited to the right chest, and in 2 cases(10.5%) the brachialis plexus was involved, and in 1 case (5.3%) malignant mesothelial cells were detected in the pleural effusion. Pleural thickening or nodules were found in 13 cases on CT and in 9 cases by B ultrasonographic examination. CONCLUSION Exposure to asbestos is not the only cause of pleural mesothelioma. Chest pain is not always associated with pleural mesothelioma. CT and B ultrasonography are of good help in the diagnosis of pleural mesothelioma.
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Affiliation(s)
- J Dou
- Department of Respiratory Medicine, Shandong Provincial Hospital, Jinan
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Usui M, Mitsuhashi M, Furuse Y, Bian C. [Changes of acid phosphatase in the uveoretinal tissue on experimental autoimmune uveoretinitis (EAU) (author's transl)]. Nippon Ganka Gakkai Zasshi 1981; 85:1385-96. [PMID: 7325075] [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: 01/24/2023]
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