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Li SS, Zhai XH, Liu HL, Liu TZ, Cao TY, Chen DM, Xiao LX, Gan XQ, Cheng K, Hong WJ, Huang Y, Lian YF, Xiao J. Whole-exome sequencing analysis identifies distinct mutational profile and novel prognostic biomarkers in primary gastrointestinal diffuse large B-cell lymphoma. Exp Hematol Oncol 2022; 11:71. [PMID: 36243813 PMCID: PMC9569083 DOI: 10.1186/s40164-022-00325-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 05/21/2022] [Accepted: 09/29/2022] [Indexed: 11/10/2022] Open
Abstract
Background Diffuse large B-cell lymphoma (DLBCL) is the most common aggressive non-Hodgkin lymphoma, and about 10% of DLBCL cases primarily occur in the gastrointestinal tract. Previous reports have revealed that primary gastrointestinal-DLBCL (pGI-DLBCL) harbors different genetic mutations from other nodal or extranodal DLBCL. However, the exonic mutation profile of pGI-DLBCL has not been fully addressed. Methods We performed whole-exome sequencing of matched tumor tissues and blood samples from 53 pGI-DLBCL patients. The exonic mutation profiles were screened, and the correlations between genetic mutations and clinicopathological characteristics were analyzed. Results A total of 6,588 protein-altering events were found and the five most frequent mutated genes in our pGI-DLBCL cohort were IGLL5 (47%), TP53 (42%), BTG2 (28%), P2RY8 (26%) and PCLO (23%). Compared to the common DLBCL, significantly less or absence of MYD88 (0%), EZH2 (0%), BCL2 (2%) or CD79B (8%) mutations were identified in pGI-DLBCL. The recurrent potential driver genes were mainly enriched in pathways related to signal transduction, infectious disease and immune regulation. In addition, HBV infection had an impact on the mutational signature in pGI-DLBCL, as positive HBsAg was significantly associated with the TP53 and LRP1B mutations, two established tumor suppressor genes in many human cancers. Moreover, IGLL5 and LRP1B mutations were significantly correlated with patient overall survival and could serve as two novel prognostic biomarkers in pGI-DLBCL. Conclusions Our study provides a comprehensive view of the exonic mutation profile of the largest pGI-DLBCL cohort to date. The results could facilitate the clinical development of novel therapeutic and prognostic biomarkers for pGI-DLBCL. Supplementary Information The online version contains supplementary material available at 10.1186/s40164-022-00325-7.
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Affiliation(s)
- Shan-Shan Li
- Department of Medical Oncology, the Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510655, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510655, China
| | - Xiao-Hui Zhai
- Department of Medical Oncology, the Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510655, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510655, China
| | - Hai-Ling Liu
- Department of Pathology, the Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510655, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510655, China
| | - Ting-Zhi Liu
- Department of Hematology, the Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510655, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510655, China
| | - Tai-Yuan Cao
- Department of Medical Oncology, the Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510655, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510655, China
| | - Dong-Mei Chen
- Guangdong Provincial Key Laboratory of Liver Disease Research, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China
| | - Le-Xin Xiao
- Guangdong Provincial Key Laboratory of Liver Disease Research, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China
| | - Xiao-Qin Gan
- Department of Medical Oncology, the Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510655, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510655, China
| | - Ke Cheng
- Department of Medical Oncology, the Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510655, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510655, China
| | - Wan-Jia Hong
- Department of Medical Oncology, the Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510655, China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510655, China
| | - Yan Huang
- Department of Pathology, the Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510655, China. .,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510655, China.
| | - Yi-Fan Lian
- Guangdong Provincial Key Laboratory of Liver Disease Research, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China.
| | - Jian Xiao
- Department of Medical Oncology, the Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510655, China. .,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510655, China.
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Wu QP, Gan XQ, Pei HY. [Research progress on health hazards and occupational protection of prolymethylmethacrylate bone cement in the operating room]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022; 40:396-400. [PMID: 35680589 DOI: 10.3760/cma.j.cn121094-20210128-00052] [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: 06/15/2023]
Abstract
There are many occupational risk factors in operating room work. Polymethyl methacrylate (PMMA) , as a kind of common bone filling and repairing material, is widely used in the fixation of artificial joints, oral braces and orthopedic prosthesis. However, PMMA will release methyl methacrylate (MMA) monomer when it is implanted into human tissues and polymerized to harden, which is toxic to the body. This paper analyzes harmful factors in using PMMA bone cement, and then explores corresponding occupational protection knowledge, in order to reduce the occurrence of occupational hazards related to PMMA bone cement and enhance the self-protection ability of the operation room medical staff.
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Affiliation(s)
- Q P Wu
- Department of Cardiology, Second Hospital Affiliated to Army Medical University, Chongqing 400037, China
| | - X Q Gan
- Department of Anesthesiology, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - H Y Pei
- Department of Anesthesiology, Daping Hospital, Army Medical University, Chongqing 400042, China
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Qian MB, Gan XQ, Zhao JG, Zheng WJ, Li W, Jiang ZH, Zhu TJ, Zhou XN. Effectiveness of health education in improving knowledge, practice and belief related to clonorchiasis in children. Acta Trop 2020; 207:105436. [PMID: 32278640 DOI: 10.1016/j.actatropica.2020.105436] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/29/2020] [Accepted: 03/04/2020] [Indexed: 01/06/2023]
Abstract
Clonorchiasis is caused by the ingestion of raw freshwater fish containing Clonorchis sinensis larvae. Health education is crucial in sustainable control of clonorchiasis but extremely challenging when dealing with adults. To investigate if education in children would be a beneficial long-term approach, a cluster-controlled trial was implemented in two primary schools between 2017 and 2019 in Binyang county, Guangxi, China. A baseline survey was conducted in both schools, and then comprehensive education activities were implemented in the interventional one. Six and 12 months later, all pupils were subjected to a survey to assess the potential change of knowledge, practice and belief related to clonorchiasis. Finally, 247 pupils in interventional school and 151 ones in control were eligible for analysis. In the interventional school, the percentage of pupils with knowledge on transmission route, early symptoms, complications and carcinogenicity increased from 15.0% to 78.5% (p < 0.001), from 6.5% to 36.8% (p < 0.001), from 4.0% to 93.9% (p < 0.001) and from 4.5% to 49.4% (p < 0.001) after 12 months. In this school, 16 pupils (6.5%) had eaten raw freshwater fish during the year immediately before the baseline survey, a number that decreased to 3 (1.2%) (p = 0.002) 12 months later. The percentage of students had the belief on the ability not to eat raw freshwater fish in the future was 70.9% at the baseline and 97.2% 12 months later (p < 0.001). Although knowledge related to clonorchiasis also increased in the control school, the absolute percentage of changes was lower; in particular, practice and belief had not changed.
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Affiliation(s)
- Men-Bao Qian
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, Shanghai 200025,China; School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai 200025,China; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai 200025, China; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai 200025, China; WHO Collaborating Centre for Tropical Diseases, Shanghai 200025, China.
| | - Xiao-Qin Gan
- Binyang Center for Disease Control and Prevention, Binyang 530400, China
| | - Jia-Guang Zhao
- Binyang Center for Disease Control and Prevention, Binyang 530400, China
| | - Wei-Jie Zheng
- Binyang Center for Disease Control and Prevention, Binyang 530400, China
| | - Wei Li
- Binyang Center for Disease Control and Prevention, Binyang 530400, China
| | - Zhi-Hua Jiang
- Guangxi Center for Disease Control and Prevention, Nanning 530021, China
| | - Ting-Jun Zhu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, Shanghai 200025,China; School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai 200025,China; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai 200025, China; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai 200025, China; WHO Collaborating Centre for Tropical Diseases, Shanghai 200025, China
| | - Xiao-Nong Zhou
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, Shanghai 200025,China; School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai 200025,China; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai 200025, China; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai 200025, China; WHO Collaborating Centre for Tropical Diseases, Shanghai 200025, China.
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Li J, Yu B, Wang W, Luo D, Dai QL, Gan XQ. Does intact umbilical cord milking increase infection rates in preterm infants with premature prolonged rupture of membranes? J Matern Fetal Neonatal Med 2018; 33:184-190. [PMID: 29886779 DOI: 10.1080/14767058.2018.1487947] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Objective: To investigate whether intact umbilical cord milking (I-UCM) can aggravate infection or result in other undesirable complications in preterm infants with premature prolonged rupture of membranes (PPROM).Methods: Neonates vaginally delivered between 28 and 37 weeks' gestation and complicated by PPROM before birth were randomly divided into two groups according to the cord clamping procedure: I-UCM before clamping and immediate cord clamping (ICC). Various parameters of the study participants were compared between the two groups.Results: Of 102 preterm infants, 48 and 54 were randomly allocated to the I-UCM and ICC groups, respectively. There were no significant differences between the two groups regarding hematological parameters (platelet count, white blood count, neutrophil ratio, and C-reactive protein) or neonatal outcomes (probable or certain neonatal infection, respiratory distress syndrome, necrotizing enterocolitis, and intraventricular hemorrhage) (p > .05). However, preterm neonates in the I-UCM group had higher serum hemoglobin and hematocrit levels (p < .05) and received fewer blood transfusions (p < .05) than those in the ICC group.Conclusion: Milking the umbilical cord to a preterm neonate with PPROM will not aggravate neonatal infection or result in other undesirable complications. This simple procedure will improve hemoglobin values and hematocrit levels and may lessen the need for transfusion during the neonatal period.
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Affiliation(s)
- Juan Li
- Department of Obstetrics and Gynecology, Chengdu Women and Children's Central Hospital, Chengdu City, People's Republic of China
| | - Bo Yu
- Department of Neonatal Intensive Care Unit (NICU), Chengdu Women and Children's Central Hospital, Chengdu City, People's Republic of China
| | - Wei Wang
- Department of Obstetrics and Gynecology, Chengdu Women and Children's Central Hospital, Chengdu City, People's Republic of China
| | - Dan Luo
- Department of Obstetrics and Gynecology, Chengdu Women and Children's Central Hospital, Chengdu City, People's Republic of China
| | - Qian-Ling Dai
- Department of Obstetrics and Gynecology, Chengdu Women and Children's Central Hospital, Chengdu City, People's Republic of China
| | - Xiao-Qin Gan
- Department of Obstetrics and Gynecology, Chengdu Women and Children's Central Hospital, Chengdu City, People's Republic of China
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Abstract
The principal aim of this paper is to develop and evaluate an approach to obtain nitrogen removal bypassing nitrate. The method is based on the addition of sodium chloride (NaCI), selective inhibitor of nitrite oxidizers, to influent. Validation of the new method was conducted on laboratory-scale experiments applying the SBR activated sludge process to domestic wastewater with low C/N ratio. With the aerobic-anoxic sequence, three parallel SBRs achieving complete nitrification-denitrification are dosed by a certain concentration of NaCI to influent. The high nitrite accumulation, depending on the salinity in the influent and the application duration of salt, was obtained in SBRs treating saline wastewater. Optimum dosage and application duration of salt, which interact to determine the performance and stabilization of nitrite accumulation, were determined by experiment. In order to evaluate the method, the response of the biological treatment system to salt concentration was also explored. The repeatability of the method was further verified under various operational conditions. Microbial population tests supported the presumption that nitrite oxidizers are inhibited by salt addition and washed out of the system. The presented method is valuable to offer a solution to realize nitrogen removal via nitrite under normal conditions.
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Affiliation(s)
- Y W Cui
- College of Energy and Environmental Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing P.R. China.
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Gan XQ, Wang JY, Yang QH, Li Z, Liu F, Pei G, Li L. Interaction between the conserved region in the C-terminal domain of GRK2 and rhodopsin is necessary for GRK2 to catalyze receptor phosphorylation. J Biol Chem 2000; 275:8469-74. [PMID: 10722682 DOI: 10.1074/jbc.275.12.8469] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The C-terminal domain of G protein-coupled receptor kinases (GRKs) consists of a conserved region and a variable region, and the variable region has been shown to direct the membrane translocation of cytosolic enzymes. The present work has revealed that the C-terminal domain may also be involved in kinase-receptor interaction that is primarily mediated by the conserved region. Truncation of the C-terminal domain or deletion of the conserved region in this domain of GRK2 resulted in a complete loss of its ability to phosphorylate rhodopsin and in an obvious decrease in its sensitivity to receptor-mediated phosphorylation of a peptide substrate. On the contrary, deletion of the betagamma subunit binding region in the C-terminal domain of GRK2 did not significantly alter the ability of the enzyme to phosphorylate rhodopsin. In addition, the recombinant proteins that represent the C-terminal domain and the conserved region of GRK2 could inhibit GRK2-mediated phosphorylation of rhodopsin and receptor-mediated activation of GRK2 but not GRK2-mediated phosphorylation of the peptide substrate. Furthermore, the conserved region as well as the C-terminal domain could directly bind rhodopsin in vitro. These results indicate that the C-terminal domain, or more precisely, the conserved region of this domain, is important for enzyme-receptor interaction and that this interaction is required for GRK2 to catalyze receptor phosphorylation.
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Affiliation(s)
- X Q Gan
- Shanghai Institute of Biochemistry, Shanghai 200031, People's Republic of China
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