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Li X, Yang F, Liu B, Ye L, Du J, Fan X, Yu Y, Li M, Bu L, Zhang Z, Xie L, Li W, Qi J. Clinical Manifestation, Risk Factors, and Immune Checkpoint Inhibitor Rechallenge of Checkpoint Inhibitor-Associated Pneumonitis in Patients With Lung Cancer. J Immunother 2024:00002371-990000000-00096. [PMID: 38618919 DOI: 10.1097/cji.0000000000000515] [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] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 02/28/2024] [Indexed: 04/16/2024]
Abstract
SUMMARY Immune-related adverse effects can lead to damage to various systems of the body, checkpoint inhibitor-associated pneumonitis (CIP) is one of the potentially lethal immune-related adverse effects. However, evidence regarding the risk factors associated with CIP is limited. To timely and accurate identification and prompt treatment of CIP, understanding the risk factors for multimorbidity among diverse study populations becomes crucial. We retrospectively analyzed the clinical data of 1131 patients with lung cancer receiving immunotherapy to identify 110 patients with CIP, the clinical characteristics and radiographic features of patients with CIP were analyzed. A case-control study was subsequently performed to identify the risk factors of CIP. The median treatment cycle was 5 cycles and the median time to onset of CIP was 4.2 months. CIP was mainly grade I or II. Most cases improved after discontinuation of immune checkpoint inhibitors (ICIs) or hormone therapy. Severe CIP tended to occur earlier in comparison to mild to moderate cases. The recurrence rate was 20.6% in ICI-rechallenged patients, and patients with relapsed CIP were usually accompanied by higher-grade adverse events than at first onset. Among the 7 patients with relapse, ICI-associated deaths occurred in 2 patients (28.6%). For rechallenging with ICIs after recovery from CIP, caution should be practiced. Male [odds ratio (OR): 2.067; 95% CI: 1.194-3.579; P= 0.009], history of chest radiation (OR: 1.642; 95% CI: 1.002-2.689; P= 0.049) and underlying lung disease (OR: 2.347; 95% CI: 1.008-5.464; P=0.048) was associated with a higher risk of CIP.
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Affiliation(s)
- Xuemeng Li
- Department of Medical Oncology, The Harbin Medical University Cancer Hospital, Harbin, China
| | - Fang Yang
- Department of Medical Oncology, The Harbin Medical University Cancer Hospital, Harbin, China
| | - Baogang Liu
- Department of Medical Oncology, The Harbin Medical University Cancer Hospital, Harbin, China
| | - Leiguang Ye
- Department of Medical Oncology, The Harbin Medical University Cancer Hospital, Harbin, China
| | - Jingwen Du
- Department of Medical Oncology, The Harbin Medical University Cancer Hospital, Harbin, China
| | - Xiaona Fan
- Department of Medical Oncology, The Harbin Medical University Cancer Hospital, Harbin, China
| | - Yue Yu
- Department of Medical Oncology, Beidahuang Industry Group General Hospital, Harbin, China
| | - Mengwei Li
- Department of Oncology and Hematology, The Third People's Hospital of Hubei Province Affiliated to Jianghan University, Third People's Hospital of Hubei Province, Wuhan, China
| | - Li Bu
- Department of Medical Oncology, The Harbin Medical University Cancer Hospital, Harbin, China
| | - Zhuoqi Zhang
- Department of Medical Oncology, The Harbin Medical University Cancer Hospital, Harbin, China
| | - Lili Xie
- Department of Medical Oncology, The Harbin Medical University Cancer Hospital, Harbin, China
| | - Wuquan Li
- Department of Medical Oncology, The Harbin Medical University Cancer Hospital, Harbin, China
| | - Jiaqing Qi
- Department of Medical Oncology, The Harbin Medical University Cancer Hospital, Harbin, China
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Zhou Z, Wang Y, Zhao F, Yao G, Yu H, Yu H, Bu L, Lu Z, Yan S. Radiation Induced Lung Injury in Rats after Pre-Oxygenation Radiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e279-e280. [PMID: 37785046 DOI: 10.1016/j.ijrobp.2023.06.1260] [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] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Deep inspiratory breath holding (DIBH) has been widely used during the radiotherapy of thoracic tumors. The main disadvantage of voluntary DIBH is the short duration of each breath hold. The hypocapnia induced by hyperoxia (oxygen concentration > 50%) pre-oxygenation (PreO2) combined with mechanical hyperventilation has been reported to prolong the duration of single breath hold, but its safety remains controversial, especially the sensitivity of lung tissue to radiation damage under hyperoxia exposure has not been elucidated. In this study, we aim to investigate the changes of radiation induced lung injury in rats after PreO2 radiation. MATERIALS/METHODS We evaluated the lung tissue of rats at different time points (48h, 2w, 4w, 8w, 12w) after thoracic radiation (15Gy single fraction to the right lung), and sequenced the transcriptome of lung tissue at 48 hours after irradiation. Rat cohorts (n = 7/group): 1. Control (Con); 2. Radiation group (RT); 3. Pre-oxygenation (oxygen concentration > 90%) for 8 hours before thoracic radiation (PreO2). RESULTS The inflammatory exudation emerged in the pulmonary interstitium at 48 hours, and reached the most serious alveolitis after four weeks of irradiation (the comparison of alveolitis scores in RT4w vs Con4w and PreO2(4w) vs Con4w, P<0.001) on hematoxylin-eosin staining. While the alveolitis scores in RT group and PreO2 group were not statistically different at each time point. Masson staining showed that the pulmonary fibrosis in the RT group and the PreO2 group reached an obvious pathological change at 12 weeks after irradiation, but the difference between the two groups was not significant. Transcriptome sequencing showed that the number of differential genes in PreO2 vs Con was 559 (302 up-regulated genes and 257 down-regulated genes). The GO enrichment analysis indicated that chromosome segregation was the most significant functional item with P value in the comparative analysis, and the KEGG enrichment analysis suggested that cell division was the most significant enrichment pathway of these differential genes. While there was a small quantity of differential genes in PreO2 vs RT group (3 up-regulated genes and 12 down-regulated genes). Pentose and glucuronate conversions were the most significant enrichment pathway of these differential genes. CONCLUSION This study demonstrated that PreO2 radiotherapy did not increase the severity of radiation induced lung injury in rats compared to conventional radiotherapy. Further study should be conducted to confirm these results and to investigate the regulatory mechanism of pneumonia caused by PreO2 radiotherapy.
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Affiliation(s)
- Z Zhou
- Department of Radiation Oncology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Y Wang
- Department of Radiation Oncology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - F Zhao
- Department of Radiation Oncology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - G Yao
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - H Yu
- The First Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, China
| | - H Yu
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - L Bu
- Department of Radiation Oncology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Z Lu
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - S Yan
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Wei X, Zheng J, Bu L, Luo Y, Qiu Y, Yang C. Digital template-guided genioplasty for patients with jaw deformity resulting from temporomandibular joint ankylosis: A comparison between single- and double-layer genioplasty. Int J Oral Maxillofac Surg 2023; 52:1057-1063. [PMID: 36990830 DOI: 10.1016/j.ijom.2023.03.003] [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] [Received: 04/21/2022] [Revised: 03/06/2023] [Accepted: 03/10/2023] [Indexed: 03/29/2023]
Abstract
The aim of this study was to compare single- and double-layer digital template-assisted genioplasty for the correction of jaw deformity resulting from temporomandibular joint ankylosis (TMJA). Thirteen patients with jaw deformity resulting from TMJA who underwent lateral arthroplasty, costochondral graft, or total joint replacement combined with single- or double-layer digital template-assisted genioplasty were included. Computed tomography data were obtained for the preoperative design. Digital templates were designed and manufactured using three-dimensional printing to assist with the chin osteotomy and repositioning in single- or double-layer genioplasty. Of the 13 patients included, seven underwent single-layer genioplasty and six underwent double-layer genioplasty. The digital templates precisely reflected the osteotomy planes and repositioning of the chin segments intraoperatively. The radiographic evaluation showed that the patients who underwent double-layer genioplasty exhibited more chin advancement (11.95 ± 0.92 mm vs 7.50 ± 0.89 mm; P < 0.001) with a slightly larger mean surface error (1.19 ± 0.14 mm vs 0.75 ± 0.15 mm; P < 0.001) than those who underwent single-layer genioplasty. This indicates that double-layer genioplasty better promoted chin advancement and improved the facial shape, but was accompanied by more surgical error compared with the preoperative design. Furthermore, hardly any nerve damage was observed. Digital templates are useful for assisting in surgical procedures.
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Affiliation(s)
- X Wei
- Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, and National Clinical Research Center of Stomatology, Shanghai, China
| | - J Zheng
- Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, and National Clinical Research Center of Stomatology, Shanghai, China
| | - L Bu
- Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, and National Clinical Research Center of Stomatology, Shanghai, China
| | - Y Luo
- Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, and National Clinical Research Center of Stomatology, Shanghai, China
| | - Y Qiu
- Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, and National Clinical Research Center of Stomatology, Shanghai, China
| | - C Yang
- Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, and National Clinical Research Center of Stomatology, Shanghai, China.
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Fan S, Wu Y, Bloom MS, Lv J, Chen L, Wang W, Li Z, Jiang Q, Bu L, Shi J, Shi T, Zeng X, Zhang L, Zhang Z, Yang B, Dong G, Feng W. Associations of per- and polyfluoroalkyl substances and their alternatives with bone mineral density levels and osteoporosis prevalence: A community-based population study in Guangzhou, Southern China. Sci Total Environ 2023; 862:160617. [PMID: 36462653 DOI: 10.1016/j.scitotenv.2022.160617] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/10/2022] [Accepted: 11/27/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Evidence concerning associations of per- and polyfluoroalkyl substances (PFASs) exposure with bone mineral density (BMD) and osteoporosis is scarce. Additionally, no study has examined the effects of PFAS isomers and alternatives on bone health. OBJECTIVES To evaluate the associations of PFASs and PFAS alternatives with BMD levels and osteoporosis prevalence. METHODS A total of 1260 healthy adults from southern China were enrolled. Serum concentrations of 32 legacy PFASs, PFAS isomers, and alternatives were measured using modified liquid chromatography-tandem mass spectrometry. Logistic and linear regression models were applied to evaluate the associations of PFASs with osteoporosis prevalence and BMD levels, respectively, adjusting for confounding factors. We performed stratified analyses to assess potential effect modifications of age and sex. We further used sensitivity analyses to testify the robustness of the main findings. RESULTS There were 204 (16.2 %) participants diagnosed with osteoporosis. Eleven of the studied PFASs (i.e., PFHpA, PFOA, PFBS, PFHpS, total-PFHxS, n-PFHxS, br-PFHxS, br-PFOS, 1m-PFOS, Σ3 + 4 + 5m-PFOS, and 6:2 Cl-PFESA) showed significant and inverse associations with BMD levels (mean differences ranged from -6.47 to -26.07 per one ln-unit increase in the PFASs). Additionally, we observed that each one ln-unit increase in PFHpA was significantly associated a 23 % (OR = 1.23, 95 % CI = 1.04, 1.45) greater odds of osteoporosis. The above associations were consistent in several sensitivity analyses we performed. Stratified analyses showed stronger associations among women and younger compared to their counterparts. CONCLUSIONS Our findings suggested that greater PFAS exposure is associated with poorer bone health, especially in women and younger people.
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Affiliation(s)
- Shujun Fan
- Department of Environmental Health, Guangzhou Center for Disease Control and Prevention, Guangzhou, China; Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, China; School of Public Health, Southern Medical University, Guangzhou, China
| | - Yan Wu
- Department of Environmental Health, Guangzhou Center for Disease Control and Prevention, Guangzhou, China; Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Michael S Bloom
- Department of Global and Community Health, George Mason University, Fairfax, VA, USA
| | - Jiayun Lv
- Department of Environmental Health, Guangzhou Center for Disease Control and Prevention, Guangzhou, China; Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Li Chen
- Department of Public Health, Yuexiu District Center for Disease Control and Prevention, Guangzhou, China
| | - Weiping Wang
- Department of Public Health, Panyu District Center for Disease Control and Prevention, Guangzhou, China
| | - Zhi Li
- Department of Public Health, Conghua District Center for Disease Control and Prevention, Guangzhou, China
| | - Qinqin Jiang
- Department of Environmental Health, Guangzhou Center for Disease Control and Prevention, Guangzhou, China; Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Li Bu
- Department of Environmental Health, Guangzhou Center for Disease Control and Prevention, Guangzhou, China; Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Jie Shi
- Department of Environmental Health, Guangzhou Center for Disease Control and Prevention, Guangzhou, China; Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Tongxing Shi
- Department of Environmental Health, Guangzhou Center for Disease Control and Prevention, Guangzhou, China; Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Xiaowen Zeng
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Guangdong Provincial Engineering Technology Research Center of Environmental and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Lin Zhang
- Department of Environmental Health, Guangzhou Center for Disease Control and Prevention, Guangzhou, China; Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Zhoubin Zhang
- Department of Environmental Health, Guangzhou Center for Disease Control and Prevention, Guangzhou, China; Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Boyi Yang
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Guangdong Provincial Engineering Technology Research Center of Environmental and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Guanghui Dong
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Guangdong Provincial Engineering Technology Research Center of Environmental and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China.
| | - Wenru Feng
- Department of Environmental Health, Guangzhou Center for Disease Control and Prevention, Guangzhou, China; Institute of Public Health, Guangzhou Medical University & Guangzhou Center for Disease Control and Prevention, Guangzhou, China.
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Zhou C, Lu Y, Kim SW, Baisamut (Reungwetwattana) T, Zhou J, Zhang Y, He J, Yang J, Cheng Y, Lee SH, Chang J, Fang J, Liu Z, Bu L, Qian L, Xu T, Archer V, Hilton M, Zhou M, Zhang L. LBA11 Alectinib (ALC) vs crizotinib (CRZ) in Asian patients (pts) with treatment-naïve advanced ALK+ non-small cell lung cancer (NSCLC): 5-year update from the phase III ALESIA study. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.353] [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: 12/07/2022] Open
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Ma Y, Ma X, Bu L, Shan J, Liu D, Zhang L, Qi X, Chu Y, Wu H, Zou B, Zhou G. Flap Endonuclease-Induced Steric Hindrance Change Enables the Construction of Multiplex and Versatile Lateral Flow Strips for DNA Detection. Anal Chem 2022; 94:14725-14733. [PMID: 36223239 DOI: 10.1021/acs.analchem.2c03143] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A lateral flow strip (LFS) is an ideal tool for point-of-care testing (POCT), but traditional LFSs cannot be used for multiplex detection. Herein, a multiplex and versatile LFS based on flap endonuclease 1 (FEN1)-induced steric hindrance change (FISH-LFS) is proposed. In this method, multiplex PCR coupled with cascade invasive reactions was employed to yield single-stranded flaps, which were target-specific but independent of target sequences. Then, the amplicons were applied for FISH-LFS, and the single-stranded flaps would be efficiently captured by the complementary LFS-probes at different test lines. As flaps were cleaved from the specially designed hairpin probes, competition among flaps and hairpin probes would occur in capturing the probes at test lines. We enabled the hairpin probes to flow through the test lines while the flaps to stay at the test lines by making use of the difference in steric hindrance between hairpin probes and flaps. The assay is able to detect as low as two copies of blood pathogens (HBV, HCV, and HIV), to pick up as low as 0.1% mutants from wild-type gDNA, and to genotype 200 copies of SARS-CoV-2 variants α and β within 75 min at a conventional PCR engine. As the method is free of dye, a portable PCR engine could be used for a cost-effective multiplex detection on site. Results using an ultrafast mobile PCR system for FISH-LFS showed that as fast as 30 min was achieved for detecting three pathogens (HBV, HCV, and HIV) in blood, very suitable for POCT of pathogen screening. The method is convenient in operation, simple in instrumentation, specific in genotyping, and very easy in setting up multiplex POCT assays.
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Affiliation(s)
- Yi Ma
- Department of Clinical Pharmacy, State Key Laboratory of Analytical Chemistry for Life Science and Jiangsu Key Laboratory of Molecular Medicine, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Xueping Ma
- Department of Clinical Pharmacy, State Key Laboratory of Analytical Chemistry for Life Science and Jiangsu Key Laboratory of Molecular Medicine, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Li Bu
- Department of Clinical Pharmacy, State Key Laboratory of Analytical Chemistry for Life Science and Jiangsu Key Laboratory of Molecular Medicine, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Jingwen Shan
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Danni Liu
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, China
| | - Likun Zhang
- Department of Clinical Pharmacy, State Key Laboratory of Analytical Chemistry for Life Science and Jiangsu Key Laboratory of Molecular Medicine, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Xiemin Qi
- Department of Clinical Pharmacy, State Key Laboratory of Analytical Chemistry for Life Science and Jiangsu Key Laboratory of Molecular Medicine, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Yanan Chu
- Department of Clinical Pharmacy, State Key Laboratory of Analytical Chemistry for Life Science and Jiangsu Key Laboratory of Molecular Medicine, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Haiping Wu
- Department of Clinical Pharmacy, State Key Laboratory of Analytical Chemistry for Life Science and Jiangsu Key Laboratory of Molecular Medicine, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.,School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Bingjie Zou
- Key Laboratory of Drug Quality Control and Pharmacovigilance of Ministry of Education, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Guohua Zhou
- Department of Clinical Pharmacy, State Key Laboratory of Analytical Chemistry for Life Science and Jiangsu Key Laboratory of Molecular Medicine, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.,School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China.,School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, China.,School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
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Wang HY, Bao ZL, Yang D, Li YN, Bu L, Ding WW, Zhang J. [Clinical characteristics and pregnancy outcomes of pregnant women with left ventricular non-compaction]. Zhonghua Fu Chan Ke Za Zhi 2022; 57:332-338. [PMID: 35658323 DOI: 10.3760/cma.j.cn112141-20220126-00049] [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: 06/15/2023]
Abstract
Objective: To investigate the clinical characteristics and pregnancy outcomes in pregnant women with left ventricular non-compaction (LVNC). Methods: The clinical data of seven pregnant women with LVNC from January 2011 to December 2021 in Beijing Anzhen Hospital,Capital Medical University were retrospectively analyzed, including age, gestational age of symptom first occured, LVNC history, clinical symptoms, New York Heart Association (NYHA) cardiac function class, echocardiography, blood brain natriuretic peptide (BNP), treatment and the maternal and fetal outcomes. Results: Five cases were diagnosed before pregnancy, of which there were three women with medication; one case diagnosed in the month of pregnancy; one case diagnosed at 36 weeks of gestation. NYHA cardiac function was grade Ⅰ in four cases and grade Ⅱ in three cases before or during the first trimester of pregnancy. Of the five pregnant women who underwent echocardiography, there were one case of left ventricular insufficiency, three cases of mild left ventricular dysfunction and one case of normal left ventricular function before or during the first trimester of pregnancy. Of the five pregnant women to the second and third trimester of pregnancy, there were one case of grade Ⅳ, one case of grade Ⅲ, two cases of grade Ⅱ-Ⅲ and one case of grade Ⅱ in NYHA class ; three cases of left ventricular insufficiency, two cases of normal left ventricular function by echocardiography four cases had cardiac symptoms at 15-24 weeks of gestation and were treated with medication. In four cases, blood BNP increased to 214-1 197 ng/L during pregnancy, and were 89-106 ng/L after termination of pregnancy. There were 4 cases with arrhythmia. Indications for termination of pregnancy: LVNC complicated with heart failure in two cases, LVNC complicated with decreased cardiac function and threatened preterm birth in one case, complicated with pregnancy at full term in two cases, LVNC complicated with severe pulmonary hypertension in one case, and left ventricular dysfunction in one case. Cesarean section in four cases in the third-trimester, in one case in the second-trimester, and forceps curettage in two cases were taken. Two full-term infants,two preterm infants were born without LVNC. Conclusions: Women diagnosed with LVNC and low left ventricular ejection fraction before pregnancy are more prone to decreased cardiac function during pregnancy. Carrying out pregnancy risk assessment and strengthening the multi-disciplinary team management of high risk factors in pregnancy are conducive to achieve good pregnancy outcomes.
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Affiliation(s)
- H Y Wang
- Department of Obstetrics and Gynecology, Beijing Anzhen Hospital, Capital Medical University, Obstetrics and Gynecology Center for Severe Cardiovascular Diseases, Beijing 100029, China
| | - Z L Bao
- Department of Obstetrics and Gynecology, Beijing Anzhen Hospital, Capital Medical University, Obstetrics and Gynecology Center for Severe Cardiovascular Diseases, Beijing 100029, China
| | - D Yang
- Department of Obstetrics and Gynecology, Beijing Anzhen Hospital, Capital Medical University, Obstetrics and Gynecology Center for Severe Cardiovascular Diseases, Beijing 100029, China
| | - Y N Li
- Department of Obstetrics and Gynecology, Beijing Anzhen Hospital, Capital Medical University, Obstetrics and Gynecology Center for Severe Cardiovascular Diseases, Beijing 100029, China
| | - L Bu
- Department of Obstetrics and Gynecology, Beijing Anzhen Hospital, Capital Medical University, Obstetrics and Gynecology Center for Severe Cardiovascular Diseases, Beijing 100029, China
| | - W W Ding
- Pediatric Cardiology Center, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - J Zhang
- Department of Obstetrics and Gynecology, Beijing Anzhen Hospital, Capital Medical University, Obstetrics and Gynecology Center for Severe Cardiovascular Diseases, Beijing 100029, China
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Al-Sumaidae S, Bu L, Hornig GJ, Bitarafan MH, DeCorby RG. Pressure sensing with high-finesse monolithic buckled-dome microcavities. Appl Opt 2021; 60:9219-9224. [PMID: 34624005 DOI: 10.1364/ao.438942] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 09/17/2021] [Indexed: 06/13/2023]
Abstract
We describe the use of on-chip buckled-dome Fabry-Perot microcavities as pressure sensing elements. These cavities, fabricated by a controlled thin-film buckling process, are inherently sealed and support stable optical modes (finesse >103), which are well-suited to coupling by single-mode fibers. Changes in external pressure deflect the buckled upper mirror, leading to changes in resonance wavelengths. Experimental shifts are shown to be in good agreement with theoretical predictions. Sensitivities as large as ∼1nm/kPa, attributable to the low thickness (<2µm) of the buckled mirror, and resolution ∼10Pa are demonstrated. We discuss potential advantages over traditional low-finesse, quasi-planar Fabry-Perot pressure sensors.
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Morrissey KA, Wegrecki M, Praveena T, Hansen VL, Bu L, Sivaraman KK, Darko S, Douek DC, Rossjohn J, Miller RD, Le Nours J. The structure of the marsupial γμ T-cell receptor defines a third T-cell lineage in vertebrates. Acta Crystallogr A Found Adv 2021. [DOI: 10.1107/s0108767321095726] [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: 11/10/2022] Open
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Hornig GJ, Al-Sumaidae S, Maldaner J, Bu L, DeCorby RG. Monolithically integrated membrane-in-the-middle cavity optomechanical systems. Opt Express 2020; 28:28113-28125. [PMID: 32988089 DOI: 10.1364/oe.402031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 08/17/2020] [Indexed: 06/11/2023]
Abstract
We describe curved-mirror Fabry-Perot cavities with embedded silicon nitride membranes, fabricated using a monolithic surface-micromachining process. The presence of the suspended membranes was confirmed by confocal microscopy, and their properties were verified through optical studies and thermomechanical calibration of mechanical/vibrational noise spectra measured at room temperature and atmospheric pressure. The cavities exhibit reflectance-limited finesse (F ∼ 103) and wavelength-scale mode volumes (VM ∼ 10·λ3). The short cavity length (L ∼ 2·λ) results in large optomechanical coupling, which is desirable for numerous applications in sensing and quantum information.
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He P, Wu Y, Huang W, Wu X, Lv J, Liu P, Bu L, Bai Z, Chen S, Feng W, Yang Z. Characteristics of and variation in airborne ARGs among urban hospitals and adjacent urban and suburban communities: A metagenomic approach. Environ Int 2020; 139:105625. [PMID: 32251897 DOI: 10.1016/j.envint.2020.105625] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 02/29/2020] [Accepted: 02/29/2020] [Indexed: 05/21/2023]
Abstract
Environmental antibiotic resistance genes (ARGs) have received much attention, while the characteristics of ARGs carried by particulate matter (PM) as a function of urban functional region are almost unknown. In this study, ARGs carried by PM2.5 and PM10 in an urban hospital, a nearby urban community and the nearest suburban community were detected using metagenomics. In total, 643 ARG subtypes belonging to 22 different ARG types were identified. The chloramphenicol exporter gene, sul1, bacA, and lnuA were the most abundant ARG subtypes in all air samples. The hospital exhibited higher ARG abundance and richness than the nearby communities. ARG profiles depended on functional region: hospital and suburban samples clustered separately, and samples from the nearby urban community interspersed among them. The representation of multidrug and quinolone resistance genes decayed with distance from the hospital to the urban community to the suburban community, indicating that hospital PM may be a hotspot for ARGs encoding proteins conferring multidrug and quinolone resistance. Airborne ARGs carried by PM in the hospital environment were more closely associated with clinically important pathogens than were those in nearby communities. In particular, carbapenemase genes, including blaNDM,blaKPC,blaIMP,blaVIM,and blaOXA-48, were discovered in hospital PM. In the suburban community, crAssphage, a human host-specific bacteriophage, was applied to predict ARG abundance and found to be enriched due to anthropogenic pollution but showed no clear evidence for ARG selection. In the hospital and the nearby urban community, the drivers of ARGs were complex. Our results highlighted that PM ARGs were closely related to human activities and revealed a potential hotspot, which could provide new evidence for further research and consequently mitigate the formation of airborne ARGs and transfer risks.
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Affiliation(s)
- Peng He
- Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, Guangdong, PR China
| | - Yan Wu
- Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, Guangdong, PR China
| | - Wenzhong Huang
- School of Public Health, Sun Yat-sen University, Guangzhou 510006, Guangdong, PR China
| | - Xinwei Wu
- Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, Guangdong, PR China
| | - Jiayun Lv
- Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, Guangdong, PR China
| | - Pengda Liu
- Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, Guangdong, PR China
| | - Li Bu
- Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, Guangdong, PR China
| | - Zhijun Bai
- Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, Guangdong, PR China
| | - Shouyi Chen
- Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, Guangdong, PR China
| | - Wenru Feng
- Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, Guangdong, PR China.
| | - Zhicong Yang
- Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, Guangdong, PR China.
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Sun X, Jiang X, Li X, Bu L, Wang D. Gd-EOB-DTPA MRI Imaging and Apoptosis Research in Orthotopic Rats Model of Hepatocellular Carcinoma after Stereotactic Radiotherapy. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1993] [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: 11/29/2022]
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13
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Tu N, Bu L, Wu G. Reply. AJNR Am J Neuroradiol 2019; 40:E46-E47. [PMID: 31467243 PMCID: PMC7048438 DOI: 10.3174/ajnr.a6204] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- N Tu
- PET-CT/MRI Center Renmin Hospital of Wuhan University Wuhan, China
| | - L Bu
- PET-CT/MRI Center Renmin Hospital of Wuhan University Wuhan, China
| | - G Wu
- Department of Radiology Shenzhen University General Hospital and Shenzhen University Clinical Medical Academy Shenzhen, China
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14
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Harrison TR, Hornig GJ, Huang C, Bu L, Haluza-Delay T, Scheuer K, DeCorby RG. Widely tunable bandpass filter based on resonant optical tunneling. Opt Express 2019; 27:23633-23644. [PMID: 31510637 DOI: 10.1364/oe.27.023633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 07/18/2019] [Indexed: 06/10/2023]
Abstract
We describe a tunable bandpass filter and polarizer based on resonant tunneling through an air gap between two hemi-cylindrical prisms coated with 4-layer a-Si/SiO2 matching stacks. Tuning is achieved by simultaneous variations in the incident angle and the air gap thickness, enabling the pass-band center wavelength to be continuously adjusted over a very wide range (potentially ~1000 - 1800 nm) with an approximately fixed fractional bandwidth (Δλ/λ ~1%). An analytical derivation of the conditions required to produce a flat-top TE pass-band at a desired wavelength is given. The filter provides excellent out-of-band rejection and strong suppression of the orthogonal TM polarization over the entire tuning range. For applications involving collimated light, it could be a useful alternative to existing widely tunable filters based on gratings or liquid crystals.
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Zhou C, Lu Y, Kim SW, Reungwetwattana T, Zhou J, Zhang Y, He J, Yang JJ, Cheng Y, Lee S, Bu L, Xu T, Yang L, Wang C, Morcos P, Mitry E, Li Z. Primary results of ALESIA: Phase III, randomised open-label study of alectinib (ALC) vs crizotinib (CRZ) in Asian patients (pts) with treatment-naïve ALK+ advanced non-small-cell lung cancer (NSCLC). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy483.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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16
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Zhou C, Lu Y, Kim SW, Reungwetwattana T, Zhou J, Zhang Y, He J, Yang JJ, Cheng Y, Lee S, Bu L, Xu T, Yang L, Wang C, Morcos P, Mitry E, Liu T, Zhang L. Primary results of ALESIA: A randomised, phase III, open-label study of alectinib vs crizotinib in Asian patients with treatment-naïve ALK+ advanced NSCLC. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy424.062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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17
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Bu L, Alippi C, Zhao D. A pdf-Free Change Detection Test Based on Density Difference Estimation. IEEE Trans Neural Netw Learn Syst 2018; 29:324-334. [PMID: 28113960 DOI: 10.1109/tnnls.2016.2619909] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The ability to detect online changes in stationarity or time variance in a data stream is a hot research topic with striking implications. In this paper, we propose a novel probability density function-free change detection test, which is based on the least squares density-difference estimation method and operates online on multidimensional inputs. The test does not require any assumption about the underlying data distribution, and is able to operate immediately after having been configured by adopting a reservoir sampling mechanism. Thresholds requested to detect a change are automatically derived once a false positive rate is set by the application designer. Comprehensive experiments validate the effectiveness in detection of the proposed method both in terms of detection promptness and accuracy.
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Bu L, Zhang LB, Mao X, Wang P. GSTP1 Ile105Val and XRCC1 Arg399Gln gene polymorphisms contribute to the clinical outcome of patients with advanced non-small cell lung cancer. Genet Mol Res 2016; 15:gmr7611. [PMID: 27323109 DOI: 10.4238/gmr.15027611] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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
Glutathione S-transferase P1 (GSTP1) and X-ray repair cross-complementing group 1 (XRCC1) genetic variations may in-fluence the efficacy of chemotherapy in various cancers. We investi-gated the possible roles of GSTP1 Ile105Val and XRCC1 Arg194Trp, and Arg399Gln gene polymorphisms in the prognosis of advanced non-small cell lung carcinoma (NSCLC) patients with cisplatin-based chemotherapy. Between January 2010 and December 2012, this study consecutively recruited 141 patients with advanced NSCLC from the First People's Hospital of Yunnan Province. Logistic regression analy-sis showed that individuals carrying the GG genotype were associated with a better response to chemotherapy than those with the wide-type genotype, with an adjusted odds ratio (95% confidence interval, CI) of 4.07 (1.06-25.06). Moreover, we observed that the AA genotype of XRCC1 Arg399Gln was correlated with a greater complete response + partial response to chemotherapy than that with the GG genotype (odds ratio = 2.71, 95%CI = 1.13-10.08). Based on the Cox hazard proportional model, the GG genotype of GSTP1 Ile105Val was found to be associated with a lower risk of death from all causes as compared to that with the AA genotype (hazard ratio = 0.07, 95%CI = 0.01-0.34). In summary, we suggest that GSTP1 Ile105Val and XRCC1 Arg399Gln polymorphisms could influence the response to chemotherapy and sur-vival of advanced NSCLC.
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Affiliation(s)
- L Bu
- Department of Thoracic Surgery, First People's Hospital of Yunnan Province, Kunhua Hospital Affiliated to Kunming University of Science and Technology, Kunming, China.,Medical Faculty of Science, Kunming University of Science and Technology, Kunming, China
| | - L B Zhang
- Department of Thoracic Surgery, First People's Hospital of Yunnan Province, Kunhua Hospital Affiliated to Kunming University of Science and Technology, Kunming, China
| | - X Mao
- Department of Thoracic Surgery, First People's Hospital of Yunnan Province, Kunhua Hospital Affiliated to Kunming University of Science and Technology, Kunming, China
| | - P Wang
- Department of Thoracic Surgery, First People's Hospital of Yunnan Province, Kunhua Hospital Affiliated to Kunming University of Science and Technology, Kunming, China
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Chen JQ, Fang LJ, Song KX, Wang XC, Huang YY, Chai SY, Bu L, Qu S. Serum Irisin Level is Higher and Related with Insulin in Acanthosis Nigricans-related Obesity. Exp Clin Endocrinol Diabetes 2015; 124:203-7. [PMID: 26588491 DOI: 10.1055/s-0035-1565060] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 01/03/2023]
Abstract
OBJECTIVE Acanthosis nigricans (AN) is proved to be a skin phenotype of hyperinsulinemia especially in obese patients. Irisin is a new myokine which plays an important role in metabolic disorders, such as obesity, insulin resistance, and type 2 diabetes. The role of irisin in the development of AN-related obesity is not yet understood. In this study, we aimed to investigate the relationship between irisin and AN-related obesity. Patients & Measurements: 30 obese patients without AN (OB group), 30 obese patients with AN (AN group), and 20 age-matched healthy volunteers (control group, CON) were included in this study. Weight, BMI, lipid profile, FFA, UA, and CRP were measured in all participants. Oral Glucose Tolerance tests (OGTT) were performed and serum glucose and plasma insulin were measured at 0, 30, 60,120 and 180 min. The AUC (area under curve) of glucose and insulin was calculated. Serum irisin was measured by ELISA. RESULTS Hyperinsulinemia is found in both AN and OB groups. The AN group had higher levels of insulin but better blood glucose tolerance and insulin response. The difference in irisin levels between the 3 groups was statistically significant, with the AN group showing the highest serum level of irisin. Serum irisin levels were positively correlated with BMI, and fasting insulin. CONCLUSION AN is a state of hyperinsulinmia and has better insulin response and glucose tolerance compared to obese patients without AN. Serum irisin may be a protective factor against impaired beta cell function in obesity with AN.
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Affiliation(s)
- J Q Chen
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, School of Medicine Tongji University, Shanghai, China
| | - L J Fang
- Nanjing Medical University, Nanjing, Jiangsu, China
| | - K X Song
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, School of Medicine Tongji University, Shanghai, China
| | - X C Wang
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, School of Medicine Tongji University, Shanghai, China
| | - Y Y Huang
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, School of Medicine Tongji University, Shanghai, China
| | - S Y Chai
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, School of Medicine Tongji University, Shanghai, China
| | - L Bu
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, School of Medicine Tongji University, Shanghai, China
| | - S Qu
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, School of Medicine Tongji University, Shanghai, China
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Tu Y, Wan L, Bu L, Shen B. Retraction of: abstract P71, In vitro and in vivo direct monitoring of miRNA-22 expression in isoproterenol-induced cardiac hypertrophy by bioluminescence imaging. Cardiovasc Res 2014; 113:248. [DOI: 10.1093/cvr/cvu244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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21
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Agullo-Pascual E, Lin X, Bu L, Bin L, Zhang M, Cerrone M, Fowler S, Murray B, te Riele A, James C, Tichnell C, Calkins H, Rothenberg E, Judge D, Delmar M. SUPER-RESOLUTION IMAGING IN HIPSC-CMS TO STUDY ARRHYTHMOGENIC CARDIOMYOPATHY IN A PATIENT WITH AN SCN5A MUTATION. Heart Rhythm 2014. [DOI: 10.1016/j.hrthm.2014.09.030] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Tu Y, Wan L, Bu L, Shen B. P71In vitro and in vivo direct monitoring of miRNA-22 expression in isoproterenol-induced cardiac hypertrophy by bioluminescence imaging. Cardiovasc Res 2014. [DOI: 10.1093/cvr/cvu082.15] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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23
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Li N, Jing H, Li J, Zhou F, Bu L, Yang X. Study of mandible bone mineral density of Chinese adults by dual-energy X-ray absorptiometry. Int J Oral Maxillofac Surg 2011; 40:1275-9. [DOI: 10.1016/j.ijom.2011.05.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 04/03/2011] [Accepted: 05/12/2011] [Indexed: 11/25/2022]
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Bai J, Wang J, Xue F, Li J, Bu L, Hu J, Xu G, Bao Q, Zhao G, Ding X, Yan J, Wu J. proTF: a comprehensive data and phylogenomics resource for prokaryotic transcription factors. Bioinformatics 2010; 26:2493-5. [DOI: 10.1093/bioinformatics/btq432] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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25
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Lu Y, Bu L, Zhou S, Jin M, Sundberg JP, Jiang H, Qian M, Shi Y, Zhao G, Kong X, Hu L. Scd1ab-Xyk: a new asebia allele characterized by a CCC trinucleotide insertion in exon 5 of the stearoyl-CoA desaturase 1 gene in mouse. Mol Genet Genomics 2004; 272:129-37. [PMID: 15278437 DOI: 10.1007/s00438-004-1043-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2004] [Accepted: 07/01/2004] [Indexed: 10/26/2022]
Abstract
We describe here a spontaneous, autosomal recessive mutant mouse suffering from skin and hair defects, which arose in the outbred Kunming strain. By haplotype analysis and direct sequencing of PCR products, we show that this mutation is a new allele of the asebia locus with a naturally occurring mutation in the Scd1 gene (a CCC insertion at nucleotide position 835 in exon 5), which codes for stearoyl-CoA desaturase 1. This mutation introduces an extra proline residue at position 279 in the Scd1 protein. The mutant mice, originally designated km/km but now assigned the name Scd1ab-Xyk (hereafter abbreviated as abXyk/abXyk), have a similar gross and histological phenotype to that reported for previously characterized allelic asebia mutations (Scd1ab, Scd1abJ, Scd1ab2J, and Scd1tm1Ntam). Histological analysis showed they were also characterized by hypoplasic sebaceous glands and abnormal hair follicles. In a cross between Kunming- abXyk/abXyk and ABJ/Le-abJ/abJ mice, all the progeny showed the same phenotype, indicating that the two mutations were non-complementing and therefore allelic. Comparisons with the other four allelic mutants indicate that the Scd1ab-Xyk mutation causes the mildest change in Scd1 function. This new mouse mutant is a good model not only for the study of scarring alopecias in humans, which are characterized by hypoplasic sebaceous glands, but also for studying the structure and function of the Scd1 protein.
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Affiliation(s)
- Y Lu
- Health Science Center, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences and Shanghai Second Medical University, 200025, Shanghai, People's Republic of China
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Zhu ZG, Yu YY, Zhang Y, Ji J, Zhang J, Liu BY, Chen XH, Lu Y, Jiang HS, Bu L, Hu LD, Kong XY. Germline mutational analysis of CDH1 and pathologic features in familial cancer syndrome with diffuse gastric cancer/breast cancer proband in a Chinese family. Eur J Surg Oncol 2004; 30:531-5. [PMID: 15135482 DOI: 10.1016/j.ejso.2004.03.004] [Citation(s) in RCA: 12] [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] [Accepted: 03/04/2004] [Indexed: 01/29/2023] Open
Abstract
AIMS Hereditary non-polyposis colorectal cancer, thyroid medullary carcinoma, breast/ovarian cancer and gastric cancer/breast cancer syndrome are encountered in surgery. Some gastric cancer/breast cancer syndrome may be the result of a CDH1 germline mutation. This is the first report of CDH1 germline mutations gastric cancer/breast cancer syndrome in Chinese patients. METHODS Peripheral blood from the proband, as well as, her first and second degree relatives was collected and CDH1 gene exon 1-16 mutations were screened. E-cadherin/beta-catenin proteins expression and histopathologic features were examined on gastric cancer/breast cancer tissues from the proband. RESULTS A C-->T nucleotide substitution at exon 13 (mRNA 2200 locus, Accession number NM-004360) was found. This was a transition from GCC-->GCT in DNA sequence (Ala154Ala). Diffuse-type gastric cancer and infiltrating ductal breast carcinoma were present. Both tumours preserved E-cadherin/beta-catenin expression immunohistochemically. CONCLUSIONS Familial cancer syndrome with diffuse-type gastric cancer/breast cancer proband in Chinese has a propensity of early onset during lifespan. No truncating or splice-site CDH1 mutations had been identified in this family. A silent nucleotide variation in exon 13 of the CDH1 gene may contribute to some forms of cancer susceptibility.
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Affiliation(s)
- Z G Zhu
- Department of Surgery of Ruijin Hospital, Shanghai Institute of Digestive Surgery, Shanghai Second Medical University, Shanghai 200025, China
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Wei SC, Yang S, Li M, Song YX, Zhang XQ, Bu L, Zheng GY, Kong XY, Zhang XJ. Identification of a locus for porokeratosis palmaris et plantaris disseminata to a 6.9-cM region at chromosome 12q24.1-24.2. Br J Dermatol 2003; 149:261-7. [PMID: 12932230 DOI: 10.1046/j.1365-2133.2003.05461.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [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: 11/20/2022]
Abstract
BACKGROUND Porokeratosis palmaris et plantaris disseminata (PPPD) is a rare autosomal dominant dyskeratotic disorder characterized by a cornoid lamella with parakeratosis, hyperkeratosis and loss of granular layers. The genetic basis of this disease is still unknown. Two loci for disseminated superficial actinic porokeratosis (DSAP) were found to be located on 12q23.2-24.1 and 15q25.1-26.1. Both PPPD and DSAP are disseminated types of porokeratosis. OBJECTIVES To locate the locus for PPPD, thereby facilitating the identification of this disease gene and leading to an understanding of the pathogenesis of porokeratosis. METHODS Genotyping was performed in a Chinese family with PPPD using polymorphic microsatellite markers on 12q and 15q. RESULTS The locus for PPPD is located within a 6.9-cM region between markers D12S1613 and D12S1341, with a maximum two-point LOD score of 8.14 (theta = 0.00) at D12S1335. CONCLUSIONS This study provides a map location for isolation of a gene causing PPPD.
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Affiliation(s)
- S C Wei
- Institute of Dermatology, First Affiliated Hospital of Anhui Medical University, 69 Meishan Road, Hefei, 230032, Anhui, China
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Hou Z, Bu L, Wang H. [Cloning and biological regulating effects of human WAF1 gene]. Zhonghua Xue Ye Xue Za Zhi 2001; 22:539-41. [PMID: 11769681] [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: 02/23/2023]
Abstract
OBJECTIVE To clone human WAF1 gene and construct WAF1-pcDNA3 recombinant plasmid, and to explore the biological regulating effects of WAF1 gene. METHODS Human WAF1 gene was amplified and cloned into pcDNA3 vector by RT-PCR and DNA direct sequencing from Hela cells. By immunofluorescence and immunohistochemistry staining, the identify the expression of the inserted WAF1 gene and its biological regulating effects on Rb, cyclin D1 gene. RESULTS Human WAF1-pcDNA3 recombinant plasmid was correctly constructed and transfected into Hct-8 cells. P21WAFI/Clip was successfully expressed. The functional characterization of the inserting WAF1 gene implied that P21WAF1/Cip1 expression could upregulate Rb gene and downregulate cyclin D1 gene at protein level. CONCLUSION Human WAF1-pcDNA3 can modulate the protein expression of the downstream gene.
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Affiliation(s)
- Z Hou
- Third Clinical College and School of Basic Medical Sciences, Norman Bethune University of Medical Sciences, Changchun 130031, China
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29
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Abstract
Gingival fibromatosis (GINGF) is an oral disorder characterized by enlargement of the gingiva. It occurs either as the sole phenotype or combined with other symptoms. Thus far, one GINGF locus has been mapped on chromosome 2, at 2p21, and a second possible locus has been mapped to 2p13. However, the genes responsible for this disorder have not been elucidated. We identified a four-generation Chinese GINGF family in which the disease manifests within 1 year after birth. After exclusion of the two known GINGF loci in this family, we performed a genome-wide search to map the chromosome location of the responsible gene. We identified a new locus, GINGF2, on chromosome 5q13-q22 with a maximum two-point lod score of 4.31 at D5S1721 (theta = 0.00). Haplotype analysis placed the critical region in the interval defined by D5S1491 and D5S1453. Within this region, calcium/calmodulin-dependent protein kinase IV (CAMK4) is a strong candidate.
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Affiliation(s)
- S Xiao
- University of Science and Technology of China, Hefei, People's Republic of China
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Abstract
Poly(methylmethacrylate) (PMMA) bone cements have been used for the fixation of hip and knee implants since the early 1960s. Aseptic loosening, related to fracture of the PMMA, continues to be the primary mode of failure for these prostheses. Failed prostheses must be replaced causing additional expense and patient trauma. Furthermore, the average lifetime of the revised prosthesis is significantly lower than that of a primary prosthesis. Recent work by Moseley and co-workers led to the development of a promising new rubber toughened cement. It is comprised of a matrix of the traditional PMMA with dispersed rubber particles to modify mechanical properties and, in particular, improve fracture toughness. The fracture toughness of the experimental material was 167% greater than the toughness of a nontoughened control; however, the elastic modulus and compressive strength were reduced. The reductions in properties should not pose a clinical problem based on results of the implant model reported by Moseley. More serious concerns were mixing and delivery problems and high residual monomer concentrations. The formulation and chemical/mechanical characterization of new toughened acrylic formulations that have residual monomer levels equivalent to Simplex and better mixing properties are reported.
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Affiliation(s)
- A D Puckett
- Department of Restorative Dentistry/Biomaterials, University of Mississippi Medical Center, Jackson 39216, USA
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Xiao S, Yu C, Chou X, Yuan W, Wang Y, Bu L, Fu G, Qian M, Yang J, Shi Y, Hu L, Han B, Wang Z, Huang W, Liu J, Chen Z, Zhao G, Kong X. Dentinogenesis imperfecta 1 with or without progressive hearing loss is associated with distinct mutations in DSPP. Nat Genet 2001; 27:201-4. [PMID: 11175790 DOI: 10.1038/84848] [Citation(s) in RCA: 235] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Dentinogenesis imperfecta 1 (DGI1, MIM 125490) is an autosomal dominant dental disease characterized by abnormal dentin production and mineralization. The DGI1 locus was recently refined to a 2-Mb interval on 4q21 (ref. 1). Here we study three Chinese families carrying DGI1. We find that the affected individuals of two families also presented with progressive sensorineural high-frequency hearing loss (gene DFNA39). We identified three disease-specific mutations within the dentin sialophosphoprotein gene (DSPP) in these three families. We detected a G-->A transition at the donor-splicing site of intron 3 in one family without DFNA39, a mutation predicted to result in the skipping of exon 3. In two other families affected with both DGI1 and DFNA39, however, we identified two independent nucleotide transversions in exons 2 and 3 of DSPP, respectively, that cause missense mutations of two adjacent amino-acid residues in the predicted transmembrane region of the protein. Moreover, transcripts of DSPP previously reported to be expressed specifically in teeth are also detected in the inner ear of mice. We have thus demonstrated for the first time that distinct mutations in DSPP are responsible for the clinical manifestations of DGI1 with or without DFNA39.
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Affiliation(s)
- S Xiao
- Shanghai Research Center of Biotechnology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200233, People's Republic of China
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Xiao S, Wang X, Qu B, Yang M, Liu G, Bu L, Wang Y, Zhu L, Lei H, Hu L, Zhang X, Liu J, Zhao G, Kong X. Refinement of the locus for autosomal dominant hereditary gingival fibromatosis (GINGF) to a 3.8-cM region on 2p21. Genomics 2000; 68:247-52. [PMID: 10995566 DOI: 10.1006/geno.2000.6285] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Hereditary gingival fibromatosis (HGF, MIM 135300; approved gene symbol GINGF) is an oral disease characterized by enlargement of gingiva. Recently, a locus for autosomal dominant HGF has been mapped to an 11-cM region on chromosome 2p21. In the current investigation, we genotyped four Chinese HGF families using polymorphic microsatellite markers on 2p21. The HOMOG test provided evidence for genetic homogeneity, with evidence for linkage in four families (heterogeneity versus homogeneity test HOMOG, chi(2) = 0. 00). A cumulative maximum two-point lod score of 5.04 was produced with marker D2S390 at a recombination frequency of θ = 0 in the four linked families. Haplotype analysis localized the hereditary gingival fibromatosis locus within the region defined by D2S352 and D2S2163. This region overlaps by 3.8 cM with the previously reported HGF region. Single-strand conformation polymorphism and sequence analysis of the coding region of cytochrome P450 1B1 (CYP1B1) excluded it as a likely candidate gene.
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Affiliation(s)
- S Xiao
- Shanghai Research Center of Biotechnology, Chinese Academy of Science, Shanghai, 200233, People's Republic of China
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Liu T, Li B, Bu L. [The diagnostic value of computed tomography and ultrasonography for detecting hypoxic-ischemic encephalopathy]. Zhonghua Fu Chan Ke Za Zhi 1999; 34:412-3. [PMID: 11360652] [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: 04/16/2023]
Abstract
OBJECTIVE To investigate diagnostic value of computed tomography (CT) and ultrasonography for detecting hypoxic-ischemic encephalopathy (HIE) and to evaluate their clinical implications. METHODS 94 neonates were examined with CT and ultrasonography, respectively, for detecting HIE and the results were compared to clinical investigation. RESULTS Significant difference (P < 0.01) was found for diagnosis of mild and moderate HIE by CT and ultrasonography. Compared with clinical diagnosis, the agreement rates of ultrasonography and CT were 83% and 39% (P < 0.01) for mild HIE, and 100% and 43% (P < 0.01) for moderate HIE respectively. There was no difference for detecting severe HIE among clinical diagnosis, CT and ultrasonography. Additionally, 9 cases with intracranial hemorrhage were detected by CT in which only 3 cases were found by ultrasonography. CONCLUSIONS Compared with clinical finding for diagnosis of mild and moderate HIE, the agreement rate of ultrasonography is higher than that of CT. However, CT is more sensitive to detect intracranial hemorrhage than ultrasonography.
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Affiliation(s)
- T Liu
- Beijing Anzhen Hospital, Beijing 100029
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LaLonde RT, Bu L, Henwood A, Fiumano J, Zhang L. Bromine-, chlorine-, and mixed halogen-substituted 4-methyl-2(5H)-furanones: synthesis and mutagenic effects of halogen and hydroxyl group replacements. Chem Res Toxicol 1997; 10:1427-36. [PMID: 9437535 DOI: 10.1021/tx9701283] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [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: 02/05/2023]
Abstract
The versatility of 4-(hydroxymethyl)-2(5H)-furanone as a starting point for the synthesis of several bromine and mixed halogen analogues of the potent water mutagen 3-chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone (MX) has been demonstrated. However, in some preparations the yields of desired products were lower for bromine- than chlorine-substituted counterparts. A total of 12 bromine-, chlorine-, and mixed halogen-substituted 4-methyl-2(5H)-furanones were tested repeatedly in 10 independent experiments for levels of Salmonella typhimurium (TA100) mutagenicities. The purpose of these experiments was to determine the mutagenic response to changing halogen content, type, and position as well as to learn the measure of these responses in the presence and absence of the C-5 OH group. Mutagenicities reached levels of 10(3) and 10(2) rev/nmol for all trihalo- and dihalo-4-methyl-5-hydroxy-2(5H)-furanones, respectively, notwithstanding substitutions by bromine or chlorine. Trihalides lacking the C-5 hydroxyl group possessed mutagenicities of the order of 10(2) rev/nmol, while hydroxyl group absence in the dihalides resulted in potency levels of slightly less than 10 rev/ nmol. Pairwise comparisons of compound mutagenicities showed that overall the C-5 H-by-OH replacement and, next in importance, increasing the number of C-6 halogens from one to two resulted in the greatest enhancements of mutagenicities. However, in comparing compound pairs within two different sets of four di- and trihalides, it was observed that replacement of a C-5 H by OH enhanced mutagenicity more for the dihalides than the trihalides indicating that increasing the C-6 halogen number simultaneously with replacing C-5 H by OH results in a nonlinear, additive enhancement. For fewer than half of the compound pairs compared, changing the C-6 halogen from chlorine to bromine resulted in small increases in mutagenicity, and for the remaining compound pairs, no increase could be discerned. This result points to the relative unimportance of only C-6 halogen type as a determinant of mutagenicity. Similarly, no impact on mutagenicity was observed for changing only the halogen type attached to C-3.
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Affiliation(s)
- R T LaLonde
- Department of Chemistry, College of Environmental Science and Forestry, State University of New York, Syracuse 13210-2786, USA
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LaLonde RT, Xie S, Bu L. Test of chiral recognition in the Salmonella typhimurium (TA100) mutagenicity of mucochloric acid-cysteine adducts. Environ Mol Mutagen 1993; 22:181-187. [PMID: 8404878 DOI: 10.1002/em.2850220311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A difference in biological response to enantiomers is not an uncommon observation and is, therefore, to be expected in various manifestations of genotoxicity. The bacterial mutagen mucochloric acid (2,3-dichloro-5-hydroxy-2(5H)-furanone) has one chiral center, at C-5, but this mutagen exists in racemic form because of the facile stereoisomerization occurring by the mechanism of ring-chain tautomerism. Two readily synthesized enantiomeric analogs of mucochloric acid, as well as the racemic form of the two, were prepared from mucochloric acid and (R)-(+)-, (S)-(-)-, and (R,S)-(+/-)-cysteine. Using Salmonella typhimurium (TA100), the enantiomeric compounds were assayed together in four dose/response assays along with mucochloric acid, the reference mutagen. In three of the same four assays, the racemic form was also assayed. Neither statistically significant differences in mutagenicity, as determined in slope responses, nor distinctions from the plotted curves were observed among the two enantiomers and their racemic form. Therefore, no enantiospecific interaction between enantiomers and chiral DNA or enzymes involved in repair or replication could be concluded.
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Affiliation(s)
- R T LaLonde
- Department of Chemistry, College of Environmental Science and Forestry, State University of New York, Syracuse
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Bu L, Zhang Y, Mason BA, Doezema RE, Slinkman JA. Determination of subband spacing in inversion layers on p-type InAs. Phys Rev B Condens Matter 1992; 45:11336-11337. [PMID: 10001063 DOI: 10.1103/physrevb.45.11336] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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LaLonde RT, Cook GP, Perakyla H, Bu L. Structure-activity relationships of bacterial mutagens related to 3-chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone: an emphasis on the effect of stepwise removal of chlorine from the dichloromethyl group. Chem Res Toxicol 1991; 4:540-5. [PMID: 1793803 DOI: 10.1021/tx00023a009] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The Salmonella typhimurium (TA100) mutagenicities of six structural analogues of 3-chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone (MX) were determined and compared. These were also compared to previously determined mutagenicities for another four analogues. This study was conducted for the primary purpose of ascertaining the effect of C-6 chlorine-by-hydrogen replacement on mutagenicity. The compounds assayed were 3-chloro-4-(chloromethyl)-5-hydroxy-2(5H)-furanone (3), 3-chloro-4-(chloromethyl)-2(5H)-furanone (4), 3-chloro-4-methyl-5-hydroxy-2(5H)-furanone (7), 3-chloro-4-methyl-2(5H)-furanone (8), 4-methyl-5-hydroxy-2(5H)-furanone (9), and 4-methyl-2(5H)-furanone (10). Compounds 3, 4, and 7 were mutagenic whereas 8-10 were not. All six compounds were stable under assay conditions. Mutagenicity data for the three active compounds were combined with data of another four active compounds studied previously to obtain an expanded data set. Mutagenicities of the seven compounds were compared, pairwise, in 21 comparisons and then by multiple regression analysis. On the average, chlorine-by-hydrogen replacement of a single chlorine located at a chloromethyl group (C-6) had a markedly greater effect in reducing mutagenicity than a similar replacement at C-3 or a hydroxyl-by-hydrogen replacement at C-5. The chlorine-by-hydrogen replacement at C-6 of compound 3 resulted in the greatest mutagenicity reduction of any single replacement and amounted to a 10(3)-fold diminished mutagenicity.
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Affiliation(s)
- R T LaLonde
- Department of Chemistry, College of Environmental Science and Forestry, State University of New York, Syracuse 13210
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