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Yang YJ, Guo F, Qiu LH, Xu XQ, Jing ZC. Combined guidance of fluoroscopy and transthoracic echocardiography for endomyocardial biopsy. Eur J Intern Med 2024; 122:122-125. [PMID: 38160074 DOI: 10.1016/j.ejim.2023.12.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 12/11/2023] [Indexed: 01/03/2024]
Affiliation(s)
- Yin-Jian Yang
- Medical Science Research Centre, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Fan Guo
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lu-Hong Qiu
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xi-Qi Xu
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Zhi-Cheng Jing
- Department of Cardiovascular Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, China
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Liu C, Zhou YP, Lian TY, Li RN, Ma JS, Yang YJ, Zhang SJ, Li XM, Qiu LH, Qiu BC, Ren LY, Wang J, Han ZY, Li JH, Wang L, Xu XQ, Sun K, Chen LF, Cheng CY, Zhang ZJ, Jing ZC. Clonal Hematopoiesis of Indeterminate Potential in Chronic Thromboembolic Pulmonary Hypertension: A Multicenter Study. Hypertension 2024; 81:372-382. [PMID: 38116660 DOI: 10.1161/hypertensionaha.123.22274] [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] [Received: 10/22/2023] [Accepted: 12/05/2023] [Indexed: 12/21/2023]
Abstract
BACKGROUND The pathogenesis of chronic thromboembolic pulmonary hypertension (CTEPH) is multifactorial and growing evidence has indicated that hematological disorders are involved. Clonal hematopoiesis of indeterminate potential (CHIP) has recently been associated with an increased risk of both hematological malignancies and cardiovascular diseases. However, the prevalence and clinical relevance of CHIP in patients with CTEPH remains unclear. METHODS Using stepwise calling on next-generation sequencing data from 499 patients with CTEPH referred to 3 centers between October 2006 and December 2021, CHIP mutations were identified. We associated CHIP with all-cause mortality in patients with CTEPH. To provide insights into potential mechanisms, the associations between CHIP and inflammatory markers were also determined. RESULTS In total, 47 (9.4%) patients with CTEPH carried at least 1 CHIP mutation at a variant allele frequency of ≥2%. The most common mutations were in DNMT3A, TET2, RUNX1, and ASXL1. During follow-up (mean, 55 months), deaths occurred in 22 (46.8%) and 104 (23.0%) patients in the CHIP and non-CHIP groups, respectively (P<0.001, log-rank test). The association of CHIP with mortality remained robust in the fully adjusted model (hazard ratio, 2.190 [95% CI, 1.257-3.816]; P=0.006). Moreover, patients with CHIP mutations showed higher circulating interleukin-1β and interleukin-6 and lower interleukin-4 and IgG galactosylation levels. CONCLUSIONS This is the first study to show that CHIP mutations occurred in 9.4% of patients with CTEPH are associated with a severe inflammatory state and confer a poorer prognosis in long-term follow-up.
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Affiliation(s)
- Chao Liu
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (C.L., Y.-P.Z., X.-M.L., L.-H.Q., B.-C.Q., L.-Y.R., X.-Q.X., L.-F.C.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yu-Ping Zhou
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (C.L., Y.-P.Z., X.-M.L., L.-H.Q., B.-C.Q., L.-Y.R., X.-Q.X., L.-F.C.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Tian-Yu Lian
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, China (T.-Y.L., S.-J.Z., C.-Y.C., Z.-C.J)
| | - Ruo-Nan Li
- School of Pharmacy, Henan University, Zhengzhou, China (R.-N.L., J.-S.M.)
| | - Jing-Si Ma
- School of Pharmacy, Henan University, Zhengzhou, China (R.-N.L., J.-S.M.)
| | - Yin-Jian Yang
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (Y.-J.Y., K.S., Z.-J.Z.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Si-Jin Zhang
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, China (T.-Y.L., S.-J.Z., C.-Y.C., Z.-C.J)
| | - Xian-Mei Li
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (C.L., Y.-P.Z., X.-M.L., L.-H.Q., B.-C.Q., L.-Y.R., X.-Q.X., L.-F.C.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lu-Hong Qiu
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (C.L., Y.-P.Z., X.-M.L., L.-H.Q., B.-C.Q., L.-Y.R., X.-Q.X., L.-F.C.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bao-Chen Qiu
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (C.L., Y.-P.Z., X.-M.L., L.-H.Q., B.-C.Q., L.-Y.R., X.-Q.X., L.-F.C.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Li-Yan Ren
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (C.L., Y.-P.Z., X.-M.L., L.-H.Q., B.-C.Q., L.-Y.R., X.-Q.X., L.-F.C.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jia Wang
- Department of Medical Laboratory, Weifang Medical University, China (J.W.)
| | - Zhi-Yan Han
- State Key Laboratory of Cardiovascular Disease, FuWai Hospital (Z.-Y.H., J.-H.L.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jing-Hui Li
- State Key Laboratory of Cardiovascular Disease, FuWai Hospital (Z.-Y.H., J.-H.L.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lan Wang
- Department of Cardio-Pulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University, China (L.W.)
| | - Xi-Qi Xu
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (C.L., Y.-P.Z., X.-M.L., L.-H.Q., B.-C.Q., L.-Y.R., X.-Q.X., L.-F.C.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Kai Sun
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (Y.-J.Y., K.S., Z.-J.Z.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lian-Feng Chen
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (C.L., Y.-P.Z., X.-M.L., L.-H.Q., B.-C.Q., L.-Y.R., X.-Q.X., L.-F.C.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chun-Yan Cheng
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, China (T.-Y.L., S.-J.Z., C.-Y.C., Z.-C.J)
| | - Ze-Jian Zhang
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (Y.-J.Y., K.S., Z.-J.Z.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhi-Cheng Jing
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, China (T.-Y.L., S.-J.Z., C.-Y.C., Z.-C.J)
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Lu D, Cheng CY, Zhu XJ, Li JY, Zhu YJ, Zhou YP, Qiu LH, Cheng WS, Li XM, Mei KY, Wang DL, Zhao ZY, Wang PW, Zhang SX, Chen YH, Chen LF, Sun K, Jing ZC. Heart Rate Response Predicts 6-Minutes Walking Distance in Pulmonary Arterial Hypertension. Am J Cardiol 2023; 204:207-214. [PMID: 37556889 DOI: 10.1016/j.amjcard.2023.07.056] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/05/2023] [Accepted: 07/08/2023] [Indexed: 08/11/2023]
Abstract
Because the 6-minute walking test (6MWT) is a self-paced submaximal test, the 6-minute walking distance (6MWD) is substantially influenced by individual effort level and physical condition, which is difficult to quantify. We aimed to explore the optimal indicator reflecting the perceived effort level during 6MWT. We prospectively enrolled 76 patients with pulmonary arterial hypertension and 152 healthy participants; they performed 2 6MWTs at 2 different speeds: (1) at leisurely speed, as performed in daily life without extra effort (leisure 6MWT) and (2) an increased walking speed, walking as the guideline indicated (standard 6MWT). The factors associated with 6MWD during standard 6MWT were investigated using a multiple linear regression analysis. The heart rate (HR) and Borg score increased and oxygen saturation (SpO2) decreased after walking in 2 6MWTs in both groups (all p <0.001). The ratio of difference in HR before and after each test (ΔHR) to HR before walking (HRat rest) and the difference in SpO2 (ΔSpO2) and Borg (ΔBorg) before and after each test were all significantly higher in both groups after standard 6MWT than after leisure 6MWT (all p <0.001). Multiple linear regression analysis revealed that ΔHR/HRat rest was an independent predictor of 6MWD during standard 6MWT in both groups (both p <0.001, adjusted R2 = 0.737 and 0.49, respectively). 6MWD and ΔHR/HRat rest were significantly lower in patients than in healthy participants (both p <0.001) and in patients with cardiac functional class III than in patients with class I/II (both p <0.001). In conclusion, ΔHR/HRat rest is a good reflector of combined physical and effort factors. HR response should be incorporated into 6MWD to better assess a participant's exercise capacity.
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Affiliation(s)
- Dan Lu
- Medical Research Center, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chun-Yan Cheng
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xi-Jie Zhu
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jing-Yi Li
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yong-Jian Zhu
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yu-Ping Zhou
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lu-Hong Qiu
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wei-Shi Cheng
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xian-Mei Li
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ke-Yi Mei
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Duo-Lin Wang
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhi-Yuan Zhao
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Pei-Wen Wang
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Su-Xin Zhang
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yong-Hao Chen
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lian-Feng Chen
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Kai Sun
- Medical Research Center, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Zhi-Cheng Jing
- Department of Cardiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Yu YQ, Qiu LH. [Considerations of the classification and treatment for fused teeth]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:25-30. [PMID: 36642449 DOI: 10.3760/cma.j.cn112144-20221021-00547] [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: 01/17/2023]
Abstract
Fused teeth were a phenomena of teeth anomalies in shape, which can affect the dental teeth both in primary and permanent dentition. Fused teeth do not only cause problems on crowding of dentition, abnormal occlusion and aesthetic, but also increase risks of dental caries, endodontics diseases, periapical diseases and periodontal diseases. Fusion of deciduous teeth may lead to abnormality of subsequent permanent teeth. Treatment of fused teeth may require multidisciplinary approach in endodontics, periodontics, oral and maxillofacial surgery, prosthodontics and orthodontics. The aim of the present article is to review the etiology, classification, clinical manifestations and treatment of fused teeth in order to provide dental clinicians with a reference of clinical management for fused teeth.
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Affiliation(s)
- Y Q Yu
- Department of Endodontics, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang 110002, China
| | - L H Qiu
- Department of Endodontics, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang 110002, China
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5
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Yang D, Qiu LH. [Etiology and pathogenesis of internal root resorption]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:38-43. [PMID: 35012250 DOI: 10.3760/cma.j.cn112144-20210929-00449] [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
Internal root resorption is a pathologic phenomenon with a characterization of the intraradicular dentin destruction due to the abnormal activities of odontoclasts. With its insidious pathology, internal root resorption can progress to a great extent before its clinical detection. The etiology and natural history of internal root resorption are uncertain and the associated key molecular pathogenesis have not been understood completely. The resorption is usually initiated by a stimulus with the loss of the protective predentin and progressed by the continuous stimuli of pulp infection. Various factors including trauma, chronic inflammation of the pulp, pulpotomy and tooth transplantation have been proposed for the occurrence of internal root resorption. The present paper reviews the etiology and pathogenesis of internal root resorption and provides guidance for the early intervention in the clinical practice.
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Affiliation(s)
- D Yang
- Department of Endodontics, School and Hospital of Stomatology, China Medical University & Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang 110002, China
| | - L H Qiu
- Department of Endodontics, School and Hospital of Stomatology, China Medical University & Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang 110002, China
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6
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Guo JJ, Qiu LH. [Prevention and treatment of root surface caries]. Zhonghua Kou Qiang Yi Xue Za Zhi 2021; 56:27-32. [PMID: 34645231 DOI: 10.3760/cma.j.cn112144-20201106-00554] [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
With the acceleration of population aging in China, the incidence of root surface caries is increasing year by year. Different from coronal caries, lesions of root surface caries mostly occur on the exposed root surfaces after gingival recession in elderly patients, mainly involving cementum and dentin. Root surface caries shows specificity in the pathogenic characteristics, clinical manifestations, diagnosis, treatment, and prevention. This review mainly summarizes the etiology and prevalence, pathology and clinical manifestations, classification, as well as three-level-prevention of root caries, in order to provide relevant guidance for the clinical prevention and treatment of root caries.
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Affiliation(s)
- J J Guo
- Department of Endodontics, School and Hospital of Stomatology, China Medical University & Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang 110002, China
| | - L H Qiu
- Department of Endodontics, School and Hospital of Stomatology, China Medical University & Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang 110002, China
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7
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Li XL, Yu YQ, Qiu LH, Yang D, Wang XM, Yu JT. [Effects of Porphyromonas endodontalis lipopolysaccharides on the expression of matrix metalloproteinase-9 in mouse osteoblasts]. Zhonghua Kou Qiang Yi Xue Za Zhi 2019; 52:499-503. [PMID: 28835032 DOI: 10.3760/cma.j.issn.1002-0098.2017.08.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Objective: To evaluate the effects of lipopolysaccharides (LPS) extracted from Porphyromonas endodontalis (Pe) on the expression of matrix metalloproteinase-9 (MMP-9) mRNA and protein as well as enzyme activity in MC3T3-E1 cells and the role of nuclear factor-κB (NF-κB) in the process, so as to investigate the expression of MMP-9 dependent signaling pathways in mouse osteoblasts induced by Pe LPS. Methods: The experiment was conducted in 3 sessions: MC3T3-E1 cells were treated with various concentrations of Pe LPS (0-20 mg/L) and 10 mg/L Pe LPS for different time intervals (0-48 h). The expression of MMP-9 mRNA and protein were detected by real-time reverse transcription-PCR (RT-PCR) and enzyme-linked immunosorbent assay (ELISA), while the enzyme activity was detected by gelatin zymography method. The expression of MMP-9 mRNA was also detected in 10 mg/L Pe LPS treated MC3T3-El cells after pretreated with specific NF-κB inhibitor BAY 11-7082 for l h. Statistical analysis was performed using one-way ANOVA and Dunnett t test with SPSS 13.0 software package. Results: The levels of MMP-9 mRNA and protein increased significantly after the treatment with various concentrations of Pe LPS (0-20 mg/L), which indicated that Pe LPS induced osteoblasts to express MMP-9 in dose dependent manners. The expression of MMP-9 protein increased from (5 395±362) ng/L (blank control group) to (12 684±375) ng/L (20 mg/L group). Maximal induction of MMP-9 mRNA expression was found in the MC3T3-E1 cells treated with 10 mg/L Pe LPS for 24 h. The expression of MMP-9 mRNA in the 20 mg/L group was about 7 times than that in the blank control group. After 24 h, the expression of MMP-9 mRNA decreased. Maximal expression of MMP-9 protein was found in the MC3T3-E1 cells treated with 10 mg/L Pe LPS for 48 h ([35 055±2 346] ng/L) showing the highest enzyme activity. The mRNA of MMP-9 decreased significantly after pretreatment with 10 µmol/L BAY 11-7082 for 1 h. Conclusions: Pe LPS might induce the expression of MMP-9 in MC3T3-E1 cells through the signaling of NF-κB.
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Affiliation(s)
- X L Li
- Department of Endodontics, School of Stomatology, China Medical University & Liaoning Institute of Dental Research, Shenyang 110002, China
| | - Y Q Yu
- Department of Endodontics, School of Stomatology, China Medical University & Liaoning Institute of Dental Research, Shenyang 110002, China
| | - L H Qiu
- Department of Endodontics, School of Stomatology, China Medical University & Liaoning Institute of Dental Research, Shenyang 110002, China
| | - D Yang
- Department of Endodontics, School of Stomatology, China Medical University & Liaoning Institute of Dental Research, Shenyang 110002, China
| | - X M Wang
- Department of Endodontics, School of Stomatology, China Medical University & Liaoning Institute of Dental Research, Shenyang 110002, China
| | - J T Yu
- Department of Endodontics, School of Stomatology, China Medical University & Liaoning Institute of Dental Research, Shenyang 110002, China
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Guo JJ, Bao MR, Qiu LH. [Differential diagnosis of periapical radiographic translucent lesions]. Zhonghua Kou Qiang Yi Xue Za Zhi 2016; 51:570-1. [PMID: 27596350 DOI: 10.3760/cma.j.issn.1002-0098.2016.09.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- J J Guo
- Department of Endodontics, School of Stomatology, China Medical University & Liaoning Institute of Dental Research, Shengyang 110002, China
| | - M R Bao
- Department of Endodontics, School of Stomatology, China Medical University & Liaoning Institute of Dental Research, Shengyang 110002, China
| | - L H Qiu
- Department of Endodontics, School of Stomatology, China Medical University & Liaoning Institute of Dental Research, Shengyang 110002, China
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Zhao C, Fu MJ, Zhou FL, Yang QB, Jiang SG, Qiu LH. Characterization and expression analysis of a cyclin B gene from black tiger shrimp (Penaeus monodon). Genet Mol Res 2015; 14:13380-90. [PMID: 26535653 DOI: 10.4238/2015.october.26.36] [Citation(s) in RCA: 7] [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 open reading frame of black tiger shrimp (Penaeus monodon) cyclin B (Pmcyclin B) was identified, based on cDNA sequence registered in GenBank (accession No. EF015590). The target sequence was 1206 bp, corresponding to 401 amino acids. Two conserved signature sequences of the cyclin B gene family were found in the Pmcyclin B deduced aa sequence. Temporal expression of Pmcyclin B in different tissues, including ovary, lymphoid organ, brain, blood, muscle, heart, gill, hepatopancreas, and intestine, were quantified by quantitative real time PCR. Messenger RNA expression levels of Pmcyclin B were greatest in the ovary, compared to other tissues (P < 0.05). Temporal expression of Pmcyclin B in the ovary at six different developmental stages was investigated by real-time PCR; no significant difference was observed (P < 0.05). Recombinant Pmcyclin B protein and its polyclonal antibody were successfully produced. Western blot analysis revealed differential expression of Pmcyclin B in ovaries in developmental stages II to IV; a positive signal (45 kDa) was observed in all ovarian stages assessed, but was most intense at stage III. Pmcyclin B protein was assessed by immunohistochemistry and was localized to the cytoplasm of prophase oocytes at stage II and enriched in the nuclei of pro-metaphase oocytes at stages III and IV. Results from this study indicate that Pmcyclin B is constitutively expressed and plays an important role in ovarian maturation in P. monodon.
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Affiliation(s)
- C Zhao
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
| | - M J Fu
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
| | - F L Zhou
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
| | - Q B Yang
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
| | - S G Jiang
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
| | - L H Qiu
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
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Guo ZJ, Qiu LH, Du MF, An SH. Characterization of ORF127 of Helicoverpa armigera nucleopolyhedrovirus. Acta Virol 2009; 53:247-53. [PMID: 19941388 DOI: 10.4149/av_2009_04_247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
It has been shown that Ha127 in the genome of Helicoverpa armigera nucleopolyhedrovirus (HaNPV) has homologs in some other baculoviruses and encodes a putative protein of 192 aa. In this study, a sequence analysis showed the transcription initiation site in Ha127 gene at nts 188 upstream of the translation initiation codon ATG and a potential leucine zipper motif at aa 34-55 in the corresponding protein. Ha127 transcripts were detected in HaNPV-infected HzAM1 cells at 18-72 hrs post infection ( p.i.) by RT-PCR, while the corresponding protein was found at 24-72 hrs p.i. by Western blot analysis suggesting that Ha127 is a late gene product. The size of detected Ha127 protein was about 28 K, a larger value than the predicted 22.6 K indicating a post-translational modification. Immunofluorescence assay of HzAM1 cells infected with HaNPV and Ha127-EGFP expression showed that Ha127 protein was localized in the nucleus. In summary, these data suggested that Ha127 was a functional ORF that might play a role in the nucleus during the late or very late gene expression.
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Affiliation(s)
- Z J Guo
- Institute of Life Science, Jiangsu University, PR China.
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Hokeness K, Qiu LH, Vezeridis M, Yan BF, Mehta S, Wan YS. IFN-gamma enhances paclitaxel-induced apoptosis that is modulated by activation of caspases 8 and 3 with a concomitant down regulation of the AKT survival pathway in cultured human keratinocytes. Oncol Rep 2005; 13:965-9. [PMID: 15809765] [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] [Indexed: 05/02/2023] Open
Abstract
The aim of this study was to investigate the molecular effects of paclitaxel and IFN-gamma on cultured human keratinocyte cells (HaCaT) assessing the induction of both the apoptotic pathway and cell survival signals. Cellular cytotoxicity assays were performed by MTT dye assay. Caspases 8, 3 and AKT (Ser473 and Thr308 residues) were assessed by Western blot analysis. Morphological characteristics were examined by Wright stain analysis. Paclitaxel reduced keratinocyte growth in a 3-day bioassay with an effective ED(50) of 6-600 ng/ml. A large variation in ED(50) can be attributed to the asynchronous population of cells. Paclitaxel treatment induced activation of the AKT survival pathway in a time-dependent manner. The down-regulation of AKT signal was preceded by the subsequent activation of caspases 8 and 3 leading to apoptosis. These results indicate that paclitaxel activates both the PI3-K/AKT cell survival pathway followed by induction of apoptotic signals in cultured human keratinocytes. The induction of apoptosis in paclitaxel-treated cells is enhanced by coadministration of IFN-gamma. The synergistic effect of these two agents on HaCaT cells relies on a pathway involving caspases 8 and 3, with activity increasing by 48 h. Collectively, our data indicate that i) paclitaxel-induced apoptosis is enhanced by IFN-gamma; ii) the down-regulation of PI3-K/AKT survival pathway may help potentiate the apoptotic effects of paclitaxel and iii) the apoptotic signaling pathways are initiated with the activation of caspases 8 and 3 activities.
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Affiliation(s)
- K Hokeness
- Department of Pathobiology, Brown University, Providence, RI, USA
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