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Zhong F, Lu H, Meng R, Feng C, Jia H, Yang HF, Wang F. Effect of Penetration Enhancer on the Structure of Stratum Corneum: On-Site Study by Confocal Polarized Raman Imaging. Mol Pharm 2024; 21:1300-1308. [PMID: 38294949 DOI: 10.1021/acs.molpharmaceut.3c00978] [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] [Indexed: 02/02/2024]
Abstract
Keratin and lipid structures in the stratum corneum (SC) are closely related to the SC barrier function. The application of penetration enhancers (PEs) disrupts the structure of SC, thereby promoting infiltration. To quantify these PE-induced structural changes in SC, we used confocal Raman imaging (CRI) and polarized Raman imaging (PRI) to explore the integrity and continuity of keratin and lipid structures in SC. The results showed that water is the safest PE and that oleic acid (OA), sodium dodecyl sulfate (SDS), and low molecular weight protamine (LMWP) disrupted the ordered structure of keratin, while azone and liposomes had less of an effect on keratin. Azone, OA, and SDS also led to significant changes in lipid structure, while LMWP and liposomes had less of an effect. Establishing this non-invasive and efficient strategy will provide new insights into transdermal drug delivery and skin health management.
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Affiliation(s)
- Feng Zhong
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, and Department of Chemistry, Shanghai Normal University, Shanghai 200234, P.R. China
| | - Hangwei Lu
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, and Department of Chemistry, Shanghai Normal University, Shanghai 200234, P.R. China
- Hangzhou Shiguang Xinya Biotechnology Ltd., Hangzhou 310000, P.R. China
| | - Ru Meng
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, and Department of Chemistry, Shanghai Normal University, Shanghai 200234, P.R. China
| | - Chunbo Feng
- Shanghai Jahwa United Co., Ltd., Shanghai 200438, P.R. China
| | - Haidong Jia
- Shanghai Jahwa United Co., Ltd., Shanghai 200438, P.R. China
| | - Hai-Feng Yang
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, and Department of Chemistry, Shanghai Normal University, Shanghai 200234, P.R. China
| | - Feng Wang
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, and Department of Chemistry, Shanghai Normal University, Shanghai 200234, P.R. China
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Du T, Meng R, Qian L, Wang Z, Li T, Wu L. Formation of extracellular polymeric substances corona on TiO 2 nanoparticles: Roles of crystalline phase and exposed facets. Water Res 2024; 249:120990. [PMID: 38086209 DOI: 10.1016/j.watres.2023.120990] [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] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 01/03/2024]
Abstract
Nanoparticles (NPs) in the environment can interact with macromolecules in the surrounding environment to form eco-corona on their surfaces, which in turn affects the environmental fate and toxicity of nanoparticles. Wastewater treatment plants containing large amounts of microbial extracellular polymeric substances (EPS) are an important source of NPs into the environment, where the formation of EPS coronas on NPs is critical. However, it remains unclear how the crystalline phase and exposed facets, which are intrinsic properties of NPs, affect the formation of EPS coronas on NPs. This study investigated the formation of EPS corona on three TiO2 NPs (representing the most widely used engineered NPs) with different crystalline phases and exposed facets. The protein type and abundance in EPS coronas on TiO2 NPs varied depending on the crystalline phase and exposed facets. Anatase with {101} facets and {001} facets preferred to adsorb proteins with lower molecular weights and higher H-bonding relevant amino acids, respectively, while EPS corona on rutile with {110} facets had proteins with higher hydrophobicity. In addition, the selective adsorption of proteins was primarily determined by steric hindrance, hydrogen bonding, and hydrophobic interaction between TiO2 NPs and proteins, which were affected by changes in aggregation state, surface hydroxyl density, and hydrophobicity of TiO2 NPs induced by crystalline phase and exposed facets. Moreover, crystalline phase and exposed facets-induced EPS corona changes altered the aggregation state and oxidation potential of TiO2-EPS corona complexes. These findings emphasize the important role of crystalline phase and exposed facets in the environmental behavior of nanoparticles and may provide insights into the safe design of nanoparticles.
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Affiliation(s)
- Tingting Du
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China.
| | - Ru Meng
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China; School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China
| | - Liwen Qian
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Ziyan Wang
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Tong Li
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China.
| | - Lijun Wu
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
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Meng R, Zhai ZP, Zuo C, Wang WN. Analysis of risk factors for complications following transurethral resection of the prostate. Eur Rev Med Pharmacol Sci 2024; 28:1464-1470. [PMID: 38436180 DOI: 10.26355/eurrev_202402_35476] [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: 03/05/2024]
Abstract
OBJECTIVE This study investigates the risk factors for complications following transurethral resection of the prostate and provides a reference for reducing postoperative complications. PATIENTS AND METHODS A retrospective analysis was conducted on 322 patients with benign prostatic hyperplasia who underwent transurethral resection of the prostate from April 2015 to January 2022. Among them, 214 patients had complete clinical and follow-up data. Clinical and follow-up data were collected, and both univariate and multivariate logistic regression analyses were performed to identify factors influencing the occurrence of postoperation transurethral resection of the prostate complications. RESULTS The incidence of complications after transurethral resection of the prostate was 19.16% (41/214). Among them, the incidence of Grade I-II complications was 14.96% (32/214), and Grade III-IV complications were 4.2% (9/214). The preoperative Quality of Life score (p<0.001) was identified as an independent risk factor for the occurrence of Grade I-II complications after transurethral resection of the prostate. The International Prostate Symptom Score (p=0.006) was identified as an independent risk factor for the occurrence of Grade III-IV complications after transurethral resection of the prostate. CONCLUSIONS The preoperative Quality of Life score is an independent risk factor for the occurrence of Grade I-II complications after transurethral resection of the prostate. The International Prostate Symptom Score is an independent risk factor for the occurrence of Grade III-IV complications after transurethral resection of the prostate.
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Affiliation(s)
- R Meng
- Department of Urology, YuQuan Hospital, Tsinghua University, Beijing, China.
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Lu B, Meng R, Wang Y, Xiong W, Ma Y, Gao P, Ren J, Zhang L, Zhao Z, Fan G, Wen Y, Yuan X. Distinctive physiological and molecular responses of foxtail millet and maize to nicosulfuron. Front Plant Sci 2024; 14:1308584. [PMID: 38293619 PMCID: PMC10824897 DOI: 10.3389/fpls.2023.1308584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 12/29/2023] [Indexed: 02/01/2024]
Abstract
Introduction Nicosulfuron is the leading acetolactate synthase inhibitor herbicide product, and widely used to control gramineous weeds. Here, we investigated the metabolic process of nicosulfuron into foxtail millet and maize, in order to clarify the mechanism of the difference in sensitivity of foxtail millet and maize to nicosulfuron from the perspective of physiological metabolism and provide a theoretical basis for the breeding of nicosulfuron-resistant foxtail millet varieties. Methods We treated foxtail millet (Zhangzagu 10, Jingu 21) and maize (Nongda 108, Ditian 8) with various doses of nicosulfuron in both pot and field experiments. The malonaldehyde (MDA) content, target enzymes, detoxification enzymes, and antioxidant enzymes, as well as related gene expression levels in the leaf tissues of foxtail millet and maize were measured, and the yield was determined after maturity. Results The results showed that the recommended dose of nicosulfuron caused Zhangzagu 10 and Jingu 21 to fail to harvest; the yield of the sensitive maize variety (Ditian 8) decreased by 37.09%, whereas that of the resistant maize variety (Nongda 108) did not decrease. Nicosulfuron stress increased the CYP450 enzyme activity, MDA content, and antioxidant enzyme activity of foxtail millet and maize, reduced the acetolactate synthase (ALS) activity and ALS gene expression of foxtail millet and Ditian 8, and reduced the glutathione S-transferase (GST) activity and GST gene expression of foxtail millet. In conclusion, target enzymes, detoxification enzymes, and antioxidant enzymes were involved in the detoxification metabolism of nicosulfuron in plants. ALS and GST are the main factors responsible for the metabolic differences among foxtail millet, sensitive maize varieties, and resistant maize varieties. Discussion These findings offer valuable insights for exploring the target resistance (TSR) and non-target resistance (NTSR) mechanisms in foxtail millet under herbicide stress and provides theoretical basis for future research of develop foxtail millet germplasm with diverse herbicide resistance traits.
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Affiliation(s)
- Boyu Lu
- State Key Laboratory of Sustainable Dryland Agriculture (in preparation), Shanxi Agricultural University, Taiyuan, Shanxi, China
| | - Ru Meng
- State Key Laboratory of Sustainable Dryland Agriculture (in preparation), Shanxi Agricultural University, Taiyuan, Shanxi, China
| | - Yiru Wang
- State Key Laboratory of Sustainable Dryland Agriculture (in preparation), Shanxi Agricultural University, Taiyuan, Shanxi, China
| | - Wei Xiong
- State Key Laboratory of Sustainable Dryland Agriculture (in preparation), Shanxi Agricultural University, Taiyuan, Shanxi, China
| | - Yuchao Ma
- State Key Laboratory of Sustainable Dryland Agriculture (in preparation), Shanxi Agricultural University, Taiyuan, Shanxi, China
| | - Peng Gao
- State Key Laboratory of Sustainable Dryland Agriculture (in preparation), Shanxi Agricultural University, Taiyuan, Shanxi, China
| | - Jianhong Ren
- College of Life Sciences, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Liguang Zhang
- State Key Laboratory of Sustainable Dryland Agriculture (in preparation), Shanxi Agricultural University, Taiyuan, Shanxi, China
| | - Zhihai Zhao
- Institute of Millet, Zhangjiakou Academy of Agricultural Science, Zhangjiakou, China
| | - Guangyu Fan
- Institute of Millet, Zhangjiakou Academy of Agricultural Science, Zhangjiakou, China
| | - Yinyuan Wen
- State Key Laboratory of Sustainable Dryland Agriculture (in preparation), Shanxi Agricultural University, Taiyuan, Shanxi, China
| | - Xiangyang Yuan
- State Key Laboratory of Sustainable Dryland Agriculture (in preparation), Shanxi Agricultural University, Taiyuan, Shanxi, China
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Chen W, Zhang H, Meng R, Zhang X, Duo H, Guo Z, Shen X, Chen C, Li Z, Fu Y. Genome-wide phylogenetic and genetic evolutionary analyses of mitochondria in Hypoderma bovis and H. sinense on the Qinghai-Tibetan Plateau. Parasitol Res 2023; 123:43. [PMID: 38095728 DOI: 10.1007/s00436-023-08060-6] [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: 07/26/2023] [Accepted: 10/27/2023] [Indexed: 12/18/2023]
Abstract
Hypoderma bovis (H. bovis) and Hypoderma sinense (H. sinense) are insects that cause hypodermosis in yaks and Bos taurus. Hypodermosis is a severe skin condition that not only impairs the development of local animal husbandry but also poses threats to human health as a zoonosis. The Qinghai-Tibetan Plateau (QTP) is known as the "Roof of the World." Its unique geographical environment and climate conditions have supported the growth of a wide range of mammals, providing favorable conditions for Hypoderma spp. to complete their life cycles. In this study, the whole mitochondrial genomes of H. bovis and H. sinense collected from the QTP were sequenced and phylogenetically analyzed. We found that the whole genomes of H. bovis and H. sinense are 16,283 bp and 16,300 bp in length, respectively. Both the H. bovis and H. sinense genomes have 37 mitochondrial genes, which include two rRNA genes (16S rRNA and 12S rRNA), 22 tRNA genes, the control region (D-loop region), the light chain replication initiation region, and 13 protein-coding genes (PCGs). The phylogenetic tree generated based on the 13 PCGs revealed close phylogenetic relationships between H. sinense, H. bovis, and Hypoderma lineatum. A similar result was also found in our phylogenetic analysis based on 18S rRNA and 28S rRNA. However, analysis of cytochrome oxidase subunit I (COI) showed cluster of H. bovis, H. sinense, and Cuterebra spp. on the same branch, all belonging to Oestridae. The differentiation time generated based on 13 PCGs indicates that H. bovis and H. sinense differentiated and formed ~4.69 million years ago (Mya) and ~4.06 Mya, respectively. This timing coincides with the differentiation and appearance of yak and Bos taurus in the Pliocene (~4.7 Mya), indicating that the parasites and mammals diverged in close temporal proximity. Of note, this period also witnessed a rapid uplift of the QTP, causing significant climate and environmental changes. Thus, we conjecture that the differentiation of Hypoderma spp. is potentially related to the differentiation of their host species, as well as climate changes caused by the uplift of the QTP. Overall, our study can provide valuable data to support further studies on the phylogeny and differentiation of Hypoderma spp. on the QTP.
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Affiliation(s)
- Wangkai Chen
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, People's Republic of China
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, People's Republic of China
| | - Haining Zhang
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, People's Republic of China
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, People's Republic of China
| | - Ru Meng
- Xining Animal Disease Control Center, Xining, People's Republic of China
| | - Xueyong Zhang
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, People's Republic of China
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, People's Republic of China
| | - Hong Duo
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, People's Republic of China
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, People's Republic of China
| | - Zhihong Guo
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, People's Republic of China
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, People's Republic of China
| | - Xiuying Shen
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, People's Republic of China
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, People's Republic of China
| | - Changjiang Chen
- Animal Husbandry and Veterinary Station of Huangyuan County, Xining, People's Republic of China
| | - Zhi Li
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, People's Republic of China.
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, People's Republic of China.
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, People's Republic of China.
| | - Yong Fu
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, People's Republic of China.
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, People's Republic of China.
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Sun G, Zang Y, Ding H, Chen Y, Groothof D, Gong H, Lou Z, Meng R, Chen Z, Furnee E, Xiang J, Zhang W. Comparison of anal function and quality of life after conformal sphincter preservation operation and intersphincteric resection of very low rectal cancer: a multicenter, retrospective, case-control analysis. Tech Coloproctol 2023; 27:1275-1287. [PMID: 37248369 PMCID: PMC10638180 DOI: 10.1007/s10151-023-02819-w] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 05/02/2023] [Indexed: 05/31/2023]
Abstract
PURPOSE Conformal sphincter preservation operation (CSPO) is a sphincter preservation operation for very low rectal cancers. Compared to intersphincteric resection (ISR), CSPO retains more dentate line and distal rectal wall, and also avoids damaging the nerves in the intersphincteric space. This study aimed to compare the postoperative anal function and quality of life between the CSPO and ISR. METHOD Patients with low rectal cancer undergoing CSPO (n = 117) and ISR (n = 66) were included from Changhai and Huashan Hospital, respectively, between 2011 and 2020. A visual analog scale (range 0-10) was utilized to evaluate satisfaction with anal function and quality of life. The anal function was evaluated with Wexner scores and low anterior resection syndrome (LARS) score. Quality of life was evaluated with the EORTC QLQ-C30 and QLQ-CR38. RESULTS The CSPO group had more male patients (65.8% vs. 50%, p = 0.042), more preoperative chemoradiotherapy (33.3% vs. 10.6%, p < 0.001), lower tumor position (3.45 ± 1.13 vs. 4.24 ± 0.86 cm, p < 0.001), and more postoperative chemotherapy (65% vs. 13.6%, p < 0.001) compared to the ISR group. In addition, CSPO patients had shorter postoperative stay (6.63 ± 2.53 vs. 7.85 ± 4.73 days, p = 0.003) and comparable stoma reversal rates within 1 year after surgery (92.16% vs. 96.97%, p = 0.318). Multivariable analysis showed that CSPO significantly contributed to higher satisfaction with anal function (beta = 1.752, 95% CI 0.776-2.728) and with quality of life (beta = 1.219, 95% CI 0.374-2.064), but not to Wexner, LARS score, or EORTC QLQ-C30 and QLQ-CR38. CONCLUSION CSPO improved the satisfaction with anal function and quality of life but utilized more preoperative chemoradiotherapy. CSPO may be an alternative choice for patients with very low rectal cancers in better physical health and with higher requirements for anal function and quality of life.
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Affiliation(s)
- G Sun
- Department of Colorectal Surgery, Changhai Hospital, Naval Medical University, 168 Changhai Road, Yangpu District, Shanghai, 200433, China
- Department of Surgery, University Medical Center Groningen, Groningen, The Netherlands
| | - Y Zang
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - H Ding
- Department of Colorectal Surgery, Changhai Hospital, Naval Medical University, 168 Changhai Road, Yangpu District, Shanghai, 200433, China
| | - Y Chen
- Department of Epidemiology and Public Health, University College London, London, UK
| | - D Groothof
- Department of Internal Medicine, University Medical Center Groningen, Groningen, The Netherlands
| | - H Gong
- Department of Colorectal Surgery, Changhai Hospital, Naval Medical University, 168 Changhai Road, Yangpu District, Shanghai, 200433, China
| | - Z Lou
- Department of Colorectal Surgery, Changhai Hospital, Naval Medical University, 168 Changhai Road, Yangpu District, Shanghai, 200433, China
| | - R Meng
- Department of Colorectal Surgery, Changhai Hospital, Naval Medical University, 168 Changhai Road, Yangpu District, Shanghai, 200433, China
| | - Z Chen
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - E Furnee
- Department of Surgery, University Medical Center Groningen, Groningen, The Netherlands
| | - J Xiang
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, 200040, China.
| | - W Zhang
- Department of Colorectal Surgery, Changhai Hospital, Naval Medical University, 168 Changhai Road, Yangpu District, Shanghai, 200433, China.
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Peng J, Zhang L, Wang L, Feng H, Yao D, Meng R, Liu X, Li X, Liu N, Tan B, Huang Z, Li S, Meng X. PD-L1 Inhibitors Combined with Thoracic Radiotherapy in First-Line Treatment of Extensive Stage Small Cell Lung Cancer: A Propensity Score-Matched, Real-World Study. Int J Radiat Oncol Biol Phys 2023; 117:S127-S128. [PMID: 37784327 DOI: 10.1016/j.ijrobp.2023.06.472] [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) The CREST study showed that the addition of thoracic radiotherapy (TRT) could improve the survival of extensive stage small cell lung cancer (ES-SCLC), but whether TRT can bring survival benefit in the era of immunotherapy is controversial. This study aims to explore the efficacy and safety of adding TRT to the combination of PD-L1 inhibitors and chemotherapy. MATERIALS/METHODS Thepatients who received PD-L1 inhibitors combined with platinum-based chemotherapy as the first-line treatment of ES-SCLC from January 2019 to December 2021 were retrospectively collected. According to whether they received TRT, they were divided into two groups, and the follow-up analysis was performed. Propensity score matching (PSM) in with a 1:1 ratio was performed to balance the baseline characteristics of the two cohorts. The endpoints were progression-free survival (PFS) and OS. RESULTS A total of 211 patients with ES-SCLC were enrolled, of whom 70 (33.2%) patients received standard therapy plus TRT as first-line treatment, and 141 (66.8%) patients in the control group received PD-L1 inhibitors plus chemotherapy. After PSM, a total of 65 pairs of patients were enrolled in the analysis. There were no significant differences in baseline characteristics between the two groups of patients who received TRT and those who did not. In all patients, the median PFS (mPFS) in the TRT group and the non-TRT groupwere 9.5 months and 7.2 months, respectively, with HR = 0.60 (95% CI 0.41-0.87, p = 0.007). The median OS (mOS) in the TRT group was also significantly longer than that in the non-TRT group (24.1 months vs. 18.5 months, HR = 0.53, 95% CI 0.32-0.85, p = 0.009). Multivariable analysis showed that baseline liver metastasis and bone metastasis were independent prognostic factors for OS. In terms of safety, immunotherapy combined with thoracic radiotherapy increased the incidence of treatment-related pneumonia (p<0.001), most of which were grade 1-2. CONCLUSION This real-world study shows that adding TRT to durvalumab or atezolizumab plus chemotherapy significantly improves survival in ES-SCLC. It leads to more treatment-related pneumonia, but most of them can be relieved after symptomatic treatment. This treatment model deserves to be explored in prospective clinical trials.
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Affiliation(s)
- J Peng
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - L Zhang
- Department of Thoracic Department, Hunan Cancer Hospital, Changsha, China
| | - L Wang
- Department of Medical Oncology, Baotou Cancer Hospital, Baotou, China
| | - H Feng
- Department of Clinical Oncology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - D Yao
- Department of Medical Oncology, Chaoyang Second Hospital, Chaoyang, China
| | - R Meng
- Department of Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - X Liu
- Department of Oncology Department, Jinzhou Medical University, Jinzhou, China, Jinzhou, China
| | - X Li
- Department of Respiratory and Critical Care, Chifeng Municipal Hospital, Chifeng, China
| | - N Liu
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin, China
| | - B Tan
- QILU HOSPITAL OF SHANDONG UNIVERSITY, Jinan, China
| | - Z Huang
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - S Li
- Department of Oncology, Zibo Municipal Hospital, Zibo, China
| | - X Meng
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
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Du T, Shao S, Qian L, Meng R, Li T, Wu L, Li Y. Effects of photochlorination on the physicochemical transformation of polystyrene nanoplastics: Mechanism and environmental fate. Water Res 2023; 243:120367. [PMID: 37499544 DOI: 10.1016/j.watres.2023.120367] [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] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/12/2023] [Accepted: 07/14/2023] [Indexed: 07/29/2023]
Abstract
With the increasingly severe plastic pollution, the environmental behavior and effects of nanoplastics (NPs) have attracted much attention. The transformation of NPs in natural and engineered environments (e.g., photooxidation, disinfection) can significantly alter the physicochemical properties and thus affect the fate and toxicity of NPs. However, how solar irradiation with free chlorine, an inevitable process once NPs enter the environment from wastewater treatment plants, affects the physicochemical properties of NPs is still unclear. In this study, the behavior and mechanism of polystyrene (PS) NPs transformation in the solar/chlorine process were evaluated. The results demonstrated that solar irradiation significantly enhanced the physicochemical transformation of PS NPs during chlorination, including chain scission, surface oxidation, and organic release. In addition, two-dimensional correlation spectroscopy analysis using Fourier transform infrared spectroscopy and reactive species quenching experiments showed that chain scission and surface oxidation of PS NPs were primarily caused by direct oxidation of hydroxyl radicals and ozone, while reactive chlorine species played an indirect role. Moreover, photochlorination-induced changes in the properties of PS NPs enhanced the colloidal stability in synthetic wastewater solution and toxicity to Caenorhabditis elegans. These findings reveal an important transformation behavior of nanoplastics in the environment and emphasize the importance of accounting for photochlorination to accurately assess the ecological risk of nanoplastics.
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Affiliation(s)
- Tingting Du
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China.
| | - Song Shao
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Liwen Qian
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Ru Meng
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Tong Li
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Lijun Wu
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Yao Li
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin 300350, China.
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Zhao X, Ma K, Li Z, Li W, Zhang X, Liu S, Meng R, Lu B, Li X, Ren J, Zhang L, Yuan X. Transcriptome Analysis Reveals Brassinolide Signaling Pathway Control of Foxtail Millet Seedling Starch and Sucrose Metabolism under Freezing Stress, with Implications for Growth and Development. Int J Mol Sci 2023; 24:11590. [PMID: 37511348 PMCID: PMC10380969 DOI: 10.3390/ijms241411590] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/14/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
Low-temperature stress limits the growth and development of foxtail millet. Freezing stress caused by sudden temperature drops, such as late-spring coldness, often occurs in the seedling stage of foxtail millet. However, the ability and coping strategies of foxtail millet to cope with such stress are not clear. In the present study, we analyzed the self-regulatory mechanisms of freezing stress in foxtail millet. We conducted a physiological study on foxtail millet leaves at -4 °C for seven different durations (0, 2, 4, 6, 8, 10, and 12 h). Longer freezing time increased cell-membrane damage, relative conductance, and malondialdehyde content. This led to osmotic stress in the leaves, which triggered an increase in free proline, soluble sugar, and soluble protein contents. The increases in these substances helped to reduce the damage caused by stress. The activities of superoxide dismutase, peroxidase, and catalase increased reactive oxygen species (ROS) content. The optimal time point for the response to freezing stress was 8 h after exposure. The transcriptome analysis of samples held for 8 h at -4 °C revealed 6862 differentially expressed genes (DEGs), among which the majority are implicated in various pathways, including the starch and sucrose metabolic pathways, antioxidant enzyme pathways, brassinolide (BR) signaling pathway, and transcription factors, according to Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment. We investigated possible crosstalk between BR signals and other pathways and found that BR signaling molecules were induced in response to freezing stress. The beta-amylase (BAM) starch hydrolase signal was enhanced by the BR signal, resulting in the accelerated degradation of starch and the formation of sugars, which served as emerging ROS scavengers and osmoregulators to resist freezing stress. In conclusion, crosstalk between BR signal transduction, and both starch and sucrose metabolism under freezing stress provides a new perspective for improving freezing resistance in foxtail millet.
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Affiliation(s)
- Xiatong Zhao
- College of Agronomy, Shanxi Agricultural University, Taigu, Jinzhong 030801, China
| | - Ke Ma
- College of Agronomy, Shanxi Agricultural University, Taigu, Jinzhong 030801, China
| | - Zhong Li
- College of Agronomy, Shanxi Agricultural University, Taigu, Jinzhong 030801, China
| | - Weidong Li
- College of Agronomy, Shanxi Agricultural University, Taigu, Jinzhong 030801, China
| | - Xin Zhang
- College of Agronomy, Shanxi Agricultural University, Taigu, Jinzhong 030801, China
| | - Shaoguang Liu
- College of Agronomy, Shanxi Agricultural University, Taigu, Jinzhong 030801, China
| | - Ru Meng
- College of Agronomy, Shanxi Agricultural University, Taigu, Jinzhong 030801, China
| | - Boyu Lu
- College of Agronomy, Shanxi Agricultural University, Taigu, Jinzhong 030801, China
| | - Xiaorui Li
- College of Agronomy, Shanxi Agricultural University, Taigu, Jinzhong 030801, China
| | - Jianhong Ren
- College of Agronomy, Shanxi Agricultural University, Taigu, Jinzhong 030801, China
| | - Liguang Zhang
- College of Agronomy, Shanxi Agricultural University, Taigu, Jinzhong 030801, China
| | - Xiangyang Yuan
- College of Agronomy, Shanxi Agricultural University, Taigu, Jinzhong 030801, China
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Zhang L, Ma K, Zhao X, Li Z, Zhang X, Li W, Meng R, Lu B, Yuan X. Development of a Comprehensive Quality Evaluation System for Foxtail Millet from Different Ecological Regions. Foods 2023; 12:2545. [PMID: 37444285 DOI: 10.3390/foods12132545] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/27/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
Foxtail millet (Setaria italica L.) is a critical grain with high nutritional value and the potential for increased production in arid and semiarid regions. The foxtail millet value chain can be upgraded only by ensuring its comprehensive quality. Thus, samples were collected from different production areas in Shanxi province, China, and compared in terms of quality traits. We established a quality evaluation system utilizing multivariate statistical analysis. The results showed that the appearance, nutritional content, and culinary value of foxtail millet produced in different ecological regions varied substantially. Different values of amino acids (DVAACs), alkali digestion values (ADVs), and total flavone content (TFC) had the highest coefficients of variation (CVs) of 50.30%, 39.75%, and 35.39%, respectively. Based on this, a comprehensive quality evaluation system for foxtail millet was established, and the quality of foxtail millet produced in the five production areas was ranked in order from highest to lowest: Dingxiang > Zezhou > Qinxian > Xingxian > Yuci. In conclusion, the ecological conditions of Xinding Basin are favorable for ensuring the comprehensive quality of foxtail millet. .
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Affiliation(s)
- Liguang Zhang
- College of Agriculture, Shanxi Agricultural University, Taiyuan 030801, China
| | - Ke Ma
- College of Agriculture, Shanxi Agricultural University, Taiyuan 030801, China
- College of Agriculture, China Agricultural University, Beijing 100089, China
| | - Xiatong Zhao
- College of Agriculture, Shanxi Agricultural University, Taiyuan 030801, China
| | - Zhong Li
- College of Agriculture, Shanxi Agricultural University, Taiyuan 030801, China
| | - Xin Zhang
- College of Agriculture, Shanxi Agricultural University, Taiyuan 030801, China
| | - Weidong Li
- College of Agriculture, Shanxi Agricultural University, Taiyuan 030801, China
| | - Ru Meng
- College of Agriculture, Shanxi Agricultural University, Taiyuan 030801, China
| | - Boyu Lu
- College of Agriculture, Shanxi Agricultural University, Taiyuan 030801, China
| | - Xiangyang Yuan
- College of Agriculture, Shanxi Agricultural University, Taiyuan 030801, China
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Fu Y, Zhang X, Li Z, Meng R, Duo H, Shen X, Ma Y, Guo Z. Identification and prevalence of fluke infection in yak and Tibetan sheep around Qinghai Lake, China. Parasitol Res 2023:10.1007/s00436-023-07877-5. [PMID: 37202562 DOI: 10.1007/s00436-023-07877-5] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 05/11/2023] [Indexed: 05/20/2023]
Abstract
Liver flukes (Fasciola spp.) and rumen flukes (Paramphistomum spp.) are significant parasites in livestock worldwide, and Fasciola spp. are considered an important zoonotic parasite. To our knowledge, there are no reports on fluke species identification and epidemiological prevalence in yak and Tibetan sheep around Qinghai Lake, China. Therefore, this study aimed to identify the major fluke species and determine the prevalence of fluke infections among yak and Tibetan sheep in this area. A total of 307 fecal samples were collected and fluke eggs identified using morphology and molecular methods. Our study is the first to display that the predominant fluke species were F. hepatica and P. leydeni in yak and Tibetan sheep around Qinghai Lake. The overall prevalence of fluke infections in yak and Tibetan sheep was 57.7% (177/307). Specifically, the prevalences of F. hepatica and P. leydeni were 15.0% (46/307) and 31.6% (97/307), respectively, and the co-infection of both species was 11.1% (34/307). No significant difference existed in the prevalence of overall fluke infection between yak and Tibetan sheep (p < 0.05). However, F. hepatica prevalence was significantly different in yak and Tibetan sheep (p < 0.05) but not P. leydeni. The findings of this study provide useful information about the current status of natural fluke invasion in yak and Tibetan sheep around Qinghai Lake, which could be important for monitoring and controlling these parasites in the region.
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Affiliation(s)
- Yong Fu
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, 810016, China.
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, 810016, China.
| | - Xueyong Zhang
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, 810016, China
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, 810016, China
| | - Zhi Li
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, 810016, China
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, 810016, China
| | - Ru Meng
- Xining Animal Disease Control Center, Xining, 810016, China
| | - Hong Duo
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, 810016, China
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, 810016, China
| | - Xiuying Shen
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, 810016, China
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, 810016, China
| | - Yijuan Ma
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, 810016, China
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, 810016, China
| | - Zhihong Guo
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, 810016, China.
- Qinghai Provincial Key Laboratory of Pathogen Diagnosis for Animal Diseases and Green Technical Research for Prevention and Control, Xining, 810016, China.
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12
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Yao Y, Tang Y, Qin H, Meng R, Zhang C, Zhang Y, Yang Y, Qiao P, Liu J, Su J. Zinc supplementation promotes oocyte maturation and subsequent embryonic development in sheep. Theriogenology 2023; 206:161-169. [PMID: 37210940 DOI: 10.1016/j.theriogenology.2023.04.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 04/28/2023] [Accepted: 04/29/2023] [Indexed: 05/23/2023]
Abstract
Zinc plays a crucial role in the growth and reproductive functions of animals. Despite the positive effects of zinc that have been reported in oocytes of cows, pigs, yaks, and other animals, the influence of zinc on sheep is little known. To investigate the effect of zinc on the in vitro maturation of sheep oocytes and subsequent parthenogenesis-activated embryonic development, we added different concentrations of zinc sulfate to the in vitro maturation (IVM) culture medium. The IVM culture medium with zinc improved the maturation of sheep oocytes and the subsequent blastocyst rate after parthenogenesis activation. Notably, it also enhanced the level of glutathione and mitochondrial activity while reducing levels of reactive oxygen species. Thus, zinc addition to the IVM medium improved the quality of oocytes with a positive effect on the subsequent development of oocytes and embryos.
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Affiliation(s)
- Yupei Yao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shanxi Province, 712100, PR China
| | - Yujie Tang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shanxi Province, 712100, PR China
| | - Haoqiang Qin
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shanxi Province, 712100, PR China
| | - Ru Meng
- Xining Animal Disease Prevention and Control Center, Xining, Qinghai Province, 810003, PR China
| | - Chengtu Zhang
- Xining Animal Disease Prevention and Control Center, Xining, Qinghai Province, 810003, PR China
| | - Yingbing Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shanxi Province, 712100, PR China
| | - Ying Yang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shanxi Province, 712100, PR China
| | - Peipei Qiao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shanxi Province, 712100, PR China
| | - Jun Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shanxi Province, 712100, PR China.
| | - Jianmin Su
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shanxi Province, 712100, PR China.
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13
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Peng J, Meng R, Liu X, Zhang L, Wang L, Feng R, Feng H, Huang Z, Yao D, Li X, Liu N, Tan B, Li S, Yu J, Meng X. 172P A Chinese multicenter, real-world study of PD-L1 inhibitors in extensive stage small cell lung cancer. J Thorac Oncol 2023. [DOI: 10.1016/s1556-0864(23)00426-4] [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: 04/04/2023]
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14
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Meng R, Fu Y, Zhang Y, Mou Y, Liu G, Fan H. Indoleamine 2,3-dioxygenase 1 signaling orchestrates immune tolerance in Echinococcus multilocularis-infected mice. Front Immunol 2022; 13:1032280. [PMID: 36439161 PMCID: PMC9691980 DOI: 10.3389/fimmu.2022.1032280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 10/24/2022] [Indexed: 11/07/2023] Open
Abstract
The cestode Echinococcus multilocularis larva infection causes lethal zoonotic alveolar echinococcosis (AE), a disease posing a great threat to the public health worldwide. This persistent hepatic tumor-like disease in AE patients has been largely attributed to aberrant T cell responses, of which Th1 responses are impeded, whilst Th2 and regulatory T cell responses are elevated, creating an immune tolerogenic microenvironment in the liver. However, the immune tolerance mechanisms are not fully understood. Dendritic cells (DCs) are key cellular components in facilitating immune tolerance in chronic diseases, including AE. Here, we demonstrate that indoleamine 2,3-dioxygenase 1-deficient (IDO1-/-) mice display less severe AE as compared to wild-type (WT) mice during the infection. Mechanistically, IDO1 prevents optimal T cells responses by programming DCs into a tolerogenic state. Specifically, IDO1 prevents the maturation and migration potential of DCs, as shown by the significantly enhanced expression of the antigen-presenting molecule (MHC II), costimulatory molecules (CD80 and CD86), and chemokine receptors (CXCR4 and CCR7) in infected IDO1-/- mice as compared to infected wild-type mice. More importantly, the tolerogenic phenotype of DCs is partly reverted in IDO1-/- mice, as indicated by enhanced activation, proliferation, and differentiation of both CD4+ and CD8+ - T cells upon infection with Echinococcus multilocularis, in comparison with WT mice. Interestingly, in absence of IDO1, CD4+ T cells are prone to differentiate to effector memory cells (CD44+CD62L-); in contrast, CD8+ T cells are highly biased to the central memory phenotype (CD44+CD62L+). Overall, these data are the first to demonstrate the essential role of IDO1 signaling in inducing immunosuppression in mice infected with Echinococcus multilocularis.
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Affiliation(s)
- Ru Meng
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), The Research Key Laboratory for Echinococcosis of Qinghai Province, Qinghai University, Xining, China
- Academician Zhang Yong Innovation Center, Xining Animal Disease Control Center, Xining, China
| | - Yong Fu
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, China
| | - Yaogang Zhang
- Qinghai University Affiliated Hospital, Qinghai University, Xining, China
| | - Yalin Mou
- Qinghai University Affiliated Hospital, Qinghai University, Xining, China
| | - Gongguan Liu
- Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Haining Fan
- Research Center for High Altitude Medicine, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), The Research Key Laboratory for Echinococcosis of Qinghai Province, Qinghai University, Xining, China
- Qinghai University Affiliated Hospital, Qinghai University, Xining, China
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15
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Yu T, Meng R, Song W, Sun H, An Q, Zhang C, Zhang Y, Su J. ZFP57 regulates DNA methylation of imprinted genes to facilitate embryonic development of somatic cell nuclear transfer embryos in Holstein cows. J Dairy Sci 2022; 106:769-782. [DOI: 10.3168/jds.2022-22427] [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] [Received: 06/18/2022] [Accepted: 08/17/2022] [Indexed: 11/17/2022]
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16
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Meng R, Liu SS, Fang YL, Gao R, Hou BX, Li H. [Root canal therapy of maxillary first molar with seven root canals: a case report]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:1068-1071. [PMID: 36266082 DOI: 10.3760/cma.j.cn112144-20220330-00145] [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] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Affiliation(s)
- R Meng
- Department of Stomatology, Korla Hospital of The Second Division of Xinjiang Production and Construction Corps, Korla 841000, China
| | - S S Liu
- Department of Stomatology, Korla Hospital of The Second Division of Xinjiang Production and Construction Corps, Korla 841000, China
| | - Y L Fang
- Department of Stomatology, Korla Hospital of The Second Division of Xinjiang Production and Construction Corps, Korla 841000, China
| | - R Gao
- Department of Stomatology, Korla Hospital of The Second Division of Xinjiang Production and Construction Corps, Korla 841000, China
| | - B X Hou
- Center for Microscope Enhanced Dentistry, Capital Medical University School of Stomatology, Beijing 100162, China
| | - H Li
- Department of Endodontics, Capital Medical University School of Stomatology, Beijing 100050, China
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17
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Simonelli M, Garralda E, Eskens F, Gil-Martin M, Yen CJ, Obermannova R, Chao Y, Lonardi S, Melichar B, Moreno V, Yu ML, Bongiovanni A, Calvo E, Rottey S, Machiels JP, Gonzalez-Martin A, Paz-Ares L, Chang CL, Mason W, Lin CC, Reardon DA, Vieito M, Santoro A, Meng R, Abbadessa G, Menas F, Lee H, Liu Q, Combeau C, Ternes N, Ziti-Ljajic S, Massard C. Isatuximab plus atezolizumab in patients with advanced solid tumors: results from a phase I/II, open-label, multicenter study. ESMO Open 2022; 7:100562. [PMID: 35987165 PMCID: PMC9588873 DOI: 10.1016/j.esmoop.2022.100562] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 07/08/2022] [Accepted: 07/11/2022] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND The anti-CD38 antibody isatuximab is approved for the treatment of relapsed/refractory multiple myeloma, but there are no data on its efficacy in solid tumors. This phase I/II study (NCT03637764) assessed the safety and activity of isatuximab plus atezolizumab (Isa + Atezo), an anti-programmed death-ligand 1 (PD-L1) antibody, in patients with immunotherapy-naive solid tumors: epithelial ovarian cancer (EOC), glioblastoma (GBM), hepatocellular carcinoma (HCC), and squamous cell carcinoma of the head and neck (SCCHN). PATIENTS AND METHODS Phase I assessed safety, tolerability, pharmacokinetics, pharmacodynamics, and the recommended phase II dose (RP2D) of isatuximab 10 mg/kg intravenously (i.v.) every week for 3 weeks followed by once every 3 weeks + atezolizumab 1200 mg i.v. every 3 weeks. Phase II used a Simon's two-stage design to assess the overall response rate or progression-free survival rate at 6 months (GBM cohort). Interim analysis was carried out at 6 months following first dose of the last enrolled patient in each cohort. Pharmacodynamic biomarkers were tested for CD38, PD-L1, tumor-infiltrating immune cells, and FOXP3+ regulatory T cells (Tregs) in the tumor microenvironment (TME). RESULTS Overall, 107 patients were treated (EOC, n = 18; GBM, n = 33; HCC, n = 27; SCCHN, n = 29). In phase I, Isa + Atezo showed an acceptable safety profile, no dose-limiting toxicities were observed, and RP2D was confirmed. Most patients experienced ≥1 treatment-emergent adverse event (TEAE), with ≤48.5% being grade ≥3. The most frequent TEAE was infusion reactions. The study did not continue to stage 2 based on prespecified targets. Tumor-infiltrating CD38+ immune cells were reduced and almost cleared after treatment. Isa + Atezo did not significantly modulate Tregs or PD-L1 expression in the TME. CONCLUSIONS Isa + Atezo had acceptable safety and tolerability. Clinical pharmacodynamic evaluation revealed efficient target engagement of isatuximab via treatment-mediated reduction of CD38+ immune cells in the TME. Based on clinical data, CD38 inhibition does not improve responsiveness to PD-L1 blockade in these patients.
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Affiliation(s)
- M Simonelli
- IRCCS Humanitas Research Hospital, Rozzano, Italy; Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy.
| | - E Garralda
- Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - F Eskens
- Erasmus MC Cancer Institute, Rotterdam, the Netherlands
| | - M Gil-Martin
- Institut Català d'Oncologia-IDIBELL, L'Hospitalet, Barcelona, Spain
| | - C-J Yen
- National Cheng Kung University, Tainan, Taiwan
| | - R Obermannova
- Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Y Chao
- Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - S Lonardi
- Veneto Institute of Oncology IOV, IRCCS, Padova, Italy
| | - B Melichar
- Department of Oncology, Palacky University, Olomouc, Czech Republic
| | - V Moreno
- START Madrid-FJD, Hospital Fundación Jiménez Díaz, Madrid, Spain
| | - M-L Yu
- Hepatobiliary Division, Department of Internal Medicine and Hepatitis Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - A Bongiovanni
- IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) "Dino Amadori", Meldola, Italy
| | - E Calvo
- START Madrid-CIOCC, Centro Integral Oncológico Clara Campal, Madrid, Spain
| | | | - J-P Machiels
- Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - A Gonzalez-Martin
- Clínica Universidad de Navarra, Madrid, and Program in Solid Tumors, Center for Applied Medical Research (CIMA), Pamplona
| | - L Paz-Ares
- Hospital Universitario 12 de Octubre, Madrid, Spain
| | - C-L Chang
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | - W Mason
- Princess Margaret Cancer Centre, Toronto, Canada
| | - C-C Lin
- National Taiwan University Hospital, Taipei, Taiwan
| | - D A Reardon
- Dana-Farber Cancer Institute, Harvard University, Boston
| | - M Vieito
- Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - A Santoro
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy; Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | | | | | - F Menas
- Sanofi, Chilly-Mazarin, France
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Liu X, Zang C, Wu Y, Meng R, Chen Y, Jiang T, Wang C, Yang X, Guo Y, Situ C, Hu Z, Zhang J, Guo X. Homeodomain-interacting protein kinase HIPK4 regulates phosphorylation of manchette protein RIMBP3 during spermiogenesis. J Biol Chem 2022; 298:102327. [PMID: 35931115 PMCID: PMC9440445 DOI: 10.1016/j.jbc.2022.102327] [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: 02/12/2022] [Revised: 07/21/2022] [Accepted: 07/22/2022] [Indexed: 11/24/2022] Open
Abstract
Nonobstructive azoospermia (NOA) is the most serious form of spermatogenesis abnormalities in male infertility. Genetic factors are important to consider as elements leading to NOA. Although many pathogenic genes have been reported, the causative genes of NOA for many patients are still unknown. In this study, we found ten point mutations in the gene encoding homeodomain-interacting protein kinase 4 (HIPK4) in patients with NOA, and using in vitro studies, we determined a premature termination point mutation (p. Lys490∗, c.1468A>T) that can cause decreased expression of HIPK4. Our phosphoproteomic analysis of Hipk4−/− testes revealed phosphorylation of multiple proteins regulated by HIPK4 during spermiogenesis. We also confirmed that a substrate of HIPK4 with four downregulated phosphorylation sites matching the xSPx motif is the known manchette-related protein RIMS-binding protein 3, which is required for sperm head morphogenesis. Therefore, we conclude HIPK4 regulates the phosphorylation of manchette protein RIMS-binding protein 3 and plays essential roles in sperm head shaping and male fertility.
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Affiliation(s)
- Xiaofei Liu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Chunyan Zang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Yifei Wu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Ru Meng
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Yu Chen
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Tao Jiang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Cheng Wang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Xiaoyu Yang
- Center of Reproductive Medicine, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Yueshuai Guo
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Chenghao Situ
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Zhibin Hu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China.
| | - Jun Zhang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China.
| | - Xuejiang Guo
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, 211166, China.
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19
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Meng R, Wang HY, Su WP, Hou BX, Li H. [Root canal treatment of multiple root canal at the bilater mandibular first molar: a case report]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:752-755. [PMID: 35790517 DOI: 10.3760/cma.j.cn112144-20210823-00379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- R Meng
- Department of Endodontics, Capital Medical University School of Stomatology, Beijing 100050, China
| | - H Y Wang
- Department of Endodontics, Capital Medical University School of Stomatology, Beijing 100050, China
| | - W P Su
- Department of Endodontics, Capital Medical University School of Stomatology, Beijing 100050, China
| | - B X Hou
- Center for Microscope Enhanced Dentistry, Capital Medical University School of Stomatology, Beijing 100162, China
| | - H Li
- Department of Endodontics, Capital Medical University School of Stomatology, Beijing 100050, China
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Meng R, Su H, Zhu S, Pan Y, Pan R, Liu R, Zhu H. Synthesis, Spectroscopic Characteristics, DFT Study and Dyeing Performance of Bischlorotriazine Based Water‐Soluble Reactive Dyes. ChemistrySelect 2022. [DOI: 10.1002/slct.202200993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ru Meng
- School of Chemistry and Molecular Engineering Nanjing Tech University Nanjing 211816 China
| | - Huan Su
- School of Chemistry and Molecular Engineering Nanjing Tech University Nanjing 211816 China
| | - Senqiang Zhu
- School of Chemistry and Molecular Engineering Nanjing Tech University Nanjing 211816 China
| | - Yuan Pan
- Jiangsu Panson Clothing Co. Ltd Nanjing 211500 China
| | - Rubin Pan
- Jiangsu Panson Clothing Co. Ltd Nanjing 211500 China
| | - Rui Liu
- School of Chemistry and Molecular Engineering Nanjing Tech University Nanjing 211816 China
| | - Hongjun Zhu
- School of Chemistry and Molecular Engineering Nanjing Tech University Nanjing 211816 China
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21
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Meng R, Li F, Li D, Jin B. A Green and Efficient Synthesis Method of Benzo[c]cinnolines: Electrochemical Reduction of 2,2’‐dinitrobiphenyl in the presence of CO2. ChemElectroChem 2022. [DOI: 10.1002/celc.202101381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ru Meng
- Anhui University Chemistry CHINA
| | - Feng Li
- Yancheng Institute of Technology Chemistry CHINA
| | - Dan Li
- Anhui University Chemistry CHINA
| | - Baokang Jin
- Anhui University Department of Chemistry Feixi road 230039 Hefei CHINA
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22
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Cho B, Rodriguez-Abreu D, Hussein M, Cobo M, Patel A, Secen N, Gerstner G, Kim DW, Lee YG, Su WC, Huang E, Patil N, Huang M, Zhang Z, Wen X, Mendus D, Hoang T, Meng R, Johnson M. LBA2 Updated analysis and patient-reported outcomes (PROs) from CITYSCAPE: A randomised, double-blind, phase II study of the anti-TIGIT antibody tiragolumab + atezolizumab (TA) versus placebo + atezolizumab (PA) as first-line treatment for PD-L1+ NSCLC. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.10.217] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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23
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Shi H, Meng R, Zhu S, Lu J, Su H, Liu R, Zhu H. Diarylamino-substituted perylene compound: synthesis, fluorescence, and application in yellow LEDs. Chem Pap 2021. [DOI: 10.1007/s11696-021-01806-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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24
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Meng X, Peng J, Li S, Feng H, Meng R, Zhang L, Liu X, Yu J. 106P Real-world outcomes in extensive-stage small cell lung cancer with PD-L1 inhibitors in China. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.10.124] [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: 11/30/2022] Open
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25
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Wainberg Z, Matos I, Delord J, Cassier P, Gil-Martin M, Kim T, LoRusso P, Bahleda R, Italiano A, Mendus D, Hoang T, Xue C, Wen X, Carvalho O, Pham T, Patil N, Meng R, Bendell J, Cervantes A, Cho B. LBA-5 Phase Ib study of the anti-TIGIT antibody tiragolumab in combination with atezolizumab in patients with metastatic esophageal cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.06.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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26
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Zeng H, Peng F, Wang J, Meng R, Zhang J. Effects of Fruquintinib on the Pluripotency Maintenance and Differentiation Potential of Mouse Embryonic Stem Cells. Cell Reprogram 2021; 23:180-190. [PMID: 34077681 DOI: 10.1089/cell.2020.0100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 12/23/2022] Open
Abstract
Mouse embryonic stem cells (mESCs) can maintain self-renewal and differentiate into any cell type of the three primary germ layers. The vascular endothelial growth factor (VEGF) is involved in the regulation of mESC differentiation and induces the activation of a series of kinase responses and several cell signaling pathways by binding to its respective transmembrane receptors, vascular endothelial growth factor receptor VEGFR1, and VEGFR2. Fruquintinib is a selective inhibitor of VEGFRs, and we used it to investigate the effects on the maintenance of pluripotency and differentiation potential of mESCs in this study. Our results showed that fruquintinib-treated cells expressed higher levels of pluripotent markers, including Oct4, Nanog, Sox2, and Esrrb under serum and leukemia inhibitory factor (LIF) condition, whereas the expression of phosphorylated Erk1/2 was restricted. Mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (MEK) signaling inhibitor (PD0325901) and glycogen synthase kinase 3 (GSK3) signaling inhibitor (CHIR99021) (also known as 2i) enable cells to maintain naive pluripotency with LIF, and fruquintinib can also promote cells to maintain naive pluripotent state even under serum/LIF condition, whereas VEGF addition limits the pluripotency characteristics in serum/LIF mESCs. Furthermore, fruquintinib could inhibit the three-germ layer establishment in embryoid body formation and maintain the undifferentiated characteristics of mESCs, indicating that fruquintinib could promote the maintenance of naive pluripotency and inhibit early differentiation programs.
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Affiliation(s)
- Hanyi Zeng
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Fanke Peng
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Jiachen Wang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Ru Meng
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Jun Zhang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
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Feng Z, Meng R, Li Q, Li D, Xu Q. 5-aza-2'-deoxycytidine may regulate the inflammatory response of human odontoblast-like cells through the NF-κB pathway. Int Endod J 2021; 54:1105-1117. [PMID: 33539038 DOI: 10.1111/iej.13488] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 01/29/2021] [Accepted: 02/02/2021] [Indexed: 11/28/2022]
Abstract
AIM To explore the role of DNA methylation in the innate immunity of the dental pulp, this study investigated the effect of 5-aza-2'-deoxycytidine (AZA) on lipoteichoic acid (LTA)-induced cytokine production and related intracellular signalling pathways in human odontoblast-like cells (hOBs). METHODOLOGY hOBs were cultured and differentiated from human dental pulp tissue, and the odontoblastic phenotype of the cells was detected using immunofluorescence, qRT-PCR and Western blotting. hOBs were pretreated with AZA and then stimulated with 10 μg mL-1 LTA. The levels of 42 cytokines related to immunity and inflammation were examined using a cytokine antibody array and verified using qRT-PCR and ELISA. The effect of AZA on the LTA-induced NF-κB and MAPK signalling pathways was explored using Western blotting. The cells were treated with the specific NF-κB inhibitor PDTC and MAPK inhibitors (the ERK inhibitor U0126, the p38 inhibitor SB203580, and the JNK inhibitor SP600125) to further confirm the role of the signalling pathways in LTA-treated hOBs. DNA immunoprecipitation-PCR was used to examine the dynamic methylation status of the gene promoters of myeloid differentiation primary response 88 (MyD88) and tumour necrosis factor receptor-associated factor 6 (TRAF6) in the LTA-induced hOBs. Statistical analyses of the differences between two groups were performed using Student's t-test. One-way analysis of variance (anova) or repeated-measures anova with a post hoc Dunnett's test was used to assess the differences between multiple sets of data. P < 0.05 was considered to be statistically significant. RESULTS The odontoblastic markers were significantly higher in hOBs than those in human dental pulp cells (hDPCs) (P < 0.05). According to the cytokine antibody array results, hOBs pretreated with AZA had significantly increased production of several inflammatory cytokines (P < 0.05), in which the expression levels of IL-6 and IL-8 were the most dramatically increased upon LTA stimulation (P < 0.01). Furthermore, AZA resulted in the significant upregulation of p-IKKα/β, p-IκBα, p-p65, p-p38 and p-ERK in LTA-stimulated hOBs (P < 0.01). Treatment with the NF-κB pathway inhibitor suppressed both IL-6 and IL-8 expression (P < 0.05), whereas inhibitors of the MAPK pathway (SB203580 and SP600125) did not. In LTA-treated hOBs, AZA significantly increased the expression levels of TRAF6 and MyD88 (P < 0.05). AZA induced MyD88 promoter hypomethylation but did not affect TRAF6 methylation. CONCLUSION AZA regulated the LTA-induced inflammatory response through the NF-κB signal pathway in hOBs. This study highlights the important role of DNA methylation in the immunity defence of odontoblasts during the dental pulp immunity response to caries.
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Affiliation(s)
- Z Feng
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - R Meng
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Department of Stomatology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Q Li
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - D Li
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Q Xu
- Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
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Patil N, Cho B, Johnson M, Caro R, Spira A, Chiu C, Molden N, Pham T, Yang X, Choi Y, Zhang Z, Hoang T, Ballinger M, Meng R, Rodríguez-Abreu D. P77.02 Efficacy of Tiragolumab + Atezolizumab in PD-L1 IHC and TIGIT Subgroups in the Phase II CITYSCAPE Study in First-Line NSCLC. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1160] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Jiang X, Xing X, Zhang Y, Zhang C, Wu Y, Chen Y, Meng R, Jia H, Cheng Y, Zhang Y, Su J. Lead exposure activates the Nrf2/Keap1 pathway, aggravates oxidative stress, and induces reproductive damage in female mice. Ecotoxicol Environ Saf 2021; 207:111231. [PMID: 32916527 DOI: 10.1016/j.ecoenv.2020.111231] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [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: 04/18/2020] [Revised: 08/21/2020] [Accepted: 08/22/2020] [Indexed: 06/11/2023]
Abstract
Lead, a common metallic contaminant, is widespread in the living environment, and has deleterious effects on the reproductive systems of humans and animals. Although numerous toxic effects of lead have been reported, the effects and underlying mechanisms of the impacts of lead exposure on the female reproductive system, especially oocyte maturation and fertility, remain unknown. In this study, mice were treated by gavage for seven days to evaluate the reproductive damage and role of Nrf2-mediated defense responses during lead exposure. Lead exposure significantly reduced the maturation and fertilization of oocytes in vivo. Additionally, lead exposure triggered oxidative stress with a decreased glutathione level, increased amount of reactive oxygen species, and abnormal mitochondrial distribution. Moreover, lead exposure caused histopathological and ultrastructural changes in oocytes and ovaries, along with decreases in the activities of catalase, glutathione peroxidase, total superoxide dismutase, and glutathione-S transferase, and increases in the levels of malonaldehyde in mouse ovaries. Further experiments demonstrated that lead exposure activated the Nrf2 signaling pathway to protect oocytes against oxidative stress by enhancing the transcription levels of antioxidant enzymes. In conclusion, our study demonstrates that lead activates the Nrf2/Keap1 pathway and impairs oocyte maturation and fertilization by inducing oxidative stress, leading to a decrease in the fertility of female mice.
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Affiliation(s)
- Xianlei Jiang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China
| | - Xupeng Xing
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China
| | - Yingbing Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China
| | - Chengtu Zhang
- Xining Animal Husbandry and Veterinary Station, Xining, Qinghai Province, 810003, PR China
| | - Ying Wu
- Xining Animal Husbandry and Veterinary Station, Xining, Qinghai Province, 810003, PR China
| | - Yongzhong Chen
- Xining Animal Husbandry and Veterinary Station, Xining, Qinghai Province, 810003, PR China
| | - Ru Meng
- Xining Animal Husbandry and Veterinary Station, Xining, Qinghai Province, 810003, PR China
| | - Huiqun Jia
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China
| | - Yuyao Cheng
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China.
| | - Jianmin Su
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China.
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Li QQ, Wei Q, Zhai XC, Qin L, Li HB, Meng R, Chen SC. MiRNA-7b-5p attenuates the progression of osteoporosis by inhibiting adipose differentiation of hMSCs via regulating IRS2. Eur Rev Med Pharmacol Sci 2020; 23:9207-9214. [PMID: 31773671 DOI: 10.26355/eurrev_201911_19412] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To elucidate whether microRNA-7b-5p (miRNA-7b-5p) could inhibit adipose differentiation of human bone marrow-derived mesenchymal stem cells (hMSCs) through regulating IRS2, thereby alleviating the progression of osteoporosis. MATERIALS AND METHODS Expression levels of miRNA-7b-5p and IRS2 in hMSCs at different stages of adipogenic differentiation and osteogenic differentiation were detected by quantitative Real Time-Polymerase Chain Reaction (qRT-PCR) and Western blot. After transfection of miRNA-7b-5p mimic or pcDNA-IRS2 in hMSCs, lipid droplet formation in cells was observed by oil red O staining. Expressions of C/EBPα and PPARγ were detected by qRT-PCR and Western blot. The potential target gene of miRNA-7b-5p was predicted by bioinformatics and verified by dual-luciferase reporter gene assay. Finally, expressions of IRS2 in hMSCs transfected with miRNA-7b-5p-NC, miRNA-7b-5p mimic or co-transfected with miRNA-7b-5p mimic and pcDNA-IRS2 were examined. RESULTS Expressions of miRNA-7b-5p and IRS2 gradually decreased with the prolongation of adipogenic differentiation, but increased during osteogenic differentiation of hMSCs. Transfection of miRNA-7b-5p mimic reduced oil red O staining after adipogenic differentiation and downregulated mRNA and protein levels of C/EBPα and PPARγ. Transfection of pcDNA-IRS2 increased oil red O staining after osteogenic differentiation and upregulated mRNA and protein levels of C/EBPα and PPARγ. Dual-luciferase reporter gene results showed that miRNA-7b-5p could bind to IRS2. Overexpression of IRS2 reversed the downregulated mRNA and protein levels of adipogenic-related genes C/EBPα and PPARγ due to the overexpression of miRNA-7b-5p. CONCLUSIONS MiRNA-7b-5p inhibits the adipogenic differentiation of hMSCs through IRS2, thus alleviating the development of osteoporosis.
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Affiliation(s)
- Q-Q Li
- Department of Orthopedics, Shanxian Central Hospital, Heze, China.
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Wei Q, Li QQ, Zhai XC, Qin L, Li HB, Meng R, Han XF. MicroRNA-330-5p promotes the development of osteosarcoma by regulating SPRY2. Eur Rev Med Pharmacol Sci 2020; 23:8761-8770. [PMID: 31696462 DOI: 10.26355/eurrev_201910_19270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE MicroRNA is an endogenous, non-coding small RNA that has a significant role in regulating organisms and pathology. Previous studies have demonstrated that microRNA-330-5p was a cancer-promoting gene. However, the role of microRNA-330-5p in osteosarcoma (OS) has not been reported. The aim of this work was to explore the characteristics of microRNA-330-5p expression in OS, and to further study its expression in OS and its relationship with clinicopathological parameters and prognosis. PATIENTS AND METHODS Quantitative Real Time-Polymerase Chain Reaction (qRT-PCR) was performed to investigate the expression of microRNA-330-5p in 48 pairs of OS tissues and paracancer tissues, and to analyze the relationship between the expression of microRNA-330-5p and OS clinical indicators and patient prognosis. Meanwhile, qRT-PCR was performed to verify the microRNA-330-5p expression in OS cells. In addition, the microRNA-330-5p knockdown expression model was constructed using lentivirus in OS cell lines U2OS and MG63. The effects of microRNA-330-5p on the biological function of OS cells were analyzed by Cell Counting Kit-8 (CCK-8) and transwell experiments. The potential mechanism was explored by Western blot. RESULTS In this paper, qRT-PCR results showed that the expression of microRNA-330-5p in OS was higher than that in paracancer tissues, and the difference was statistically significant. Compared with microRNA-330-5p low expression group, patients with high expression of microRNA -330-5p had a higher prevalence of distant metastasis and a lower overall survival rate. In vitro experiment showed that the proliferation, invasion and metastasis abilities of the cells in the microRNA-330-5p silencing group were markedly decreased compared with the negative control group (NC group). Western blot results demonstrated that microRNA-330-5p inhibitor can activate SPRY2 and regulate the expression of key proteins, such as p-Smad2, p-Smad3, TGF-β1, MMP9 and Vimentin in the TGF-β1/Smad signaling pathway. It was found that there was a mutual regulation between microRNA-330-5p and SPRY2, which promoted the malignant progression of OS. CONCLUSIONS The expression of microRNA-330-5p was markedly increased in OS, which was associated with distant metastasis and poor prognosis. Furthermore, we found that microRNA-330-5p may promote the vicious progression of OS by inter-modulating SPRY2 and the TGF-β1/Smad signaling pathways.
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Affiliation(s)
- Q Wei
- Department of Orthopedics, Shanxian Central Hospital, Heze, China.
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Teng X, Chen F, Gao Y, Meng R, Wu Y, Wang F, Ying Y, Liu X, Guo X, Sun Y, Lin P, Wen Y, Yang H. Enzyme-Assist-Interference-Free Strategy for Raman Selective Determination of Sialic Acid. Anal Chem 2020; 92:3332-3339. [PMID: 31965784 DOI: 10.1021/acs.analchem.9b05264] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Abnormal physiological levels of sialic acid (SA) could be used to diagnosis cancer progression stages. In this work, we describe an enzyme-assist-interference-free strategy for Raman selective determination of SA in serum. First, we assemble gold nanoparticles (Au NPs) onto the indium tin oxide glass (ITO) to construct an ITO/Au two-dimension substrate. Through modification of 4-mercaptoboric acid (4-MPBA) onto the surface of ITO/Au, the SA response plate is prepared due to the reversible esterification bond. In this strategy, a sandwich structure is rationally designed as ITO/Au/4-MPBA/SA/4-MPBA/Au to enhance the Raman scattering. The Raman detection linear concentration of SA ranged from 2.5 × 10-7 to 1.5 × 10-6 M, and a limit of detection about 1.2 × 10-7 M could be achieved. Considering the presence of glucose (Glu) in physiological fluid, we introduce glucose oxidase to remove the interference from Glu and realize the accurate determination of SA. The proposed novel Raman rapid method provides an ultrasensitive and interference-free protocol for the early diagnosis of cancer.
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Affiliation(s)
- Xinyan Teng
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors and School of Chemistry and Materials Science , Shanghai Normal University , Shanghai 200234 , China
| | - Fu Chen
- School of Environmental and Geographical Sciences , Shanghai Normal University , Shanghai 200234 , China
| | - Yun Gao
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors and School of Chemistry and Materials Science , Shanghai Normal University , Shanghai 200234 , China
| | - Ru Meng
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors and School of Chemistry and Materials Science , Shanghai Normal University , Shanghai 200234 , China
| | - Yiping Wu
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors and School of Chemistry and Materials Science , Shanghai Normal University , Shanghai 200234 , China
| | - Feng Wang
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors and School of Chemistry and Materials Science , Shanghai Normal University , Shanghai 200234 , China
| | - Ye Ying
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors and School of Chemistry and Materials Science , Shanghai Normal University , Shanghai 200234 , China
| | - Xinling Liu
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors and School of Chemistry and Materials Science , Shanghai Normal University , Shanghai 200234 , China
| | - Xiaoyu Guo
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors and School of Chemistry and Materials Science , Shanghai Normal University , Shanghai 200234 , China
| | - Yang Sun
- Institute of Arthritis Research , Shanghai Academy of Chinese Medical Sciences, Guanghua Integrative Medicine Hospital , Shanghai 200052 , P. R. China
| | - Ping Lin
- Clinical Laboratory , Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine , Shanghai 200065 , P. R. China
| | - Ying Wen
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors and School of Chemistry and Materials Science , Shanghai Normal University , Shanghai 200234 , China
| | - Haifeng Yang
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors and School of Chemistry and Materials Science , Shanghai Normal University , Shanghai 200234 , China
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Peng P, Chen Y, Han G, Meng R, Zhang S, Liao Z, Zhang Y, Gong J, Xiao C, Liu X, Zhang P, Zhang L, Xia S, Chu Q, Chen Y, Zhang L. MA01.09 Concomitant SBRT and EGFR-TKI Versus EGFR-TKI Alone for Oligometastatic NSCLC: A Multicenter, Randomized Phase II Study. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.499] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
Deregulation of microRNA (miRNA) is closely related to cancer development and progression. Our previous study identified that miR-129-5p suppresses proliferation and metastasis in breast cancer cells. Herein, we determined that CBX4 is a miR-129-5p target gene. CBX4 is up-regulated in breast cancer tissues and while its over-expression promotes cell proliferation, its knockdown suppresses cell proliferation in breast cancer cells. Furthermore, CBX4 mediates miR-129-5p-induced inhibition of cell proliferation and negatively correlates with the expression of miR-129-5p expression. These combined results suggest that CBX4 is an oncogene in breast cancer cells, and that it may provide a novel therapeutic strategy for breast cancer treatment.
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Affiliation(s)
- R Meng
- The First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China,Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China
| | - J Fang
- The First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China,Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China,Department of Head-neck and Breast Surgery, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, China
| | - Y Yu
- The First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China,Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China
| | - L K Hou
- The First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China,Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China
| | - J R Chi
- The First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China,Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China
| | - A X Chen
- The First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China,Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China
| | - Y Zhao
- The First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China,Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China
| | - X C Cao
- The First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China,Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, China
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Luo Y, Meng R, Li J, Liu B, Cao X, Ge W. Self-compassion may reduce anxiety and depression in nursing students: a pathway through perceived stress. Public Health 2019; 174:1-10. [PMID: 31265974 DOI: 10.1016/j.puhe.2019.05.015] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 04/11/2019] [Accepted: 05/14/2019] [Indexed: 12/24/2022]
Abstract
OBJECTIVES Nursing students report high levels of anxiety and depression, which requires urgent attention. A growing amount of evidence indicates that self-compassion may indirectly (through perceived stress) and directly influence anxiety and depression, yet the research to date has not fully examined the reasons for this association. The present study examines the effects of self-compassion on anxiety and depression through perceived stress and may thus provide an innovative starting point for developing effective interventions for affected nursing students. STUDY DESIGN This is a cross-sectional study. METHODS Using structural equation modelling (SEM), we estimated the strength of the pathways between self-compassion, perceived stress and anxiety and depression among 1453 nursing students in Ningbo, China. The measurements included demographics, the Self-Compassion Scale-Short Form, the Chinese version of the Perceived Stress Questionnaire and the Goldberg Anxiety and Depression Scale. RESULTS Nursing students had an average score of 4.50 ± 2.44 on the Goldberg Anxiety Scale (GAS) and 3.58 ± 2.34 on the Goldberg Depression Scale (GDS), indicating high levels of anxiety and depression. The GAS and GDS scores were significantly different by the academic year, part-time employment and career prospects. The average scores for self-compassion and perceived stress were 38.99 ± 4.55 and 0.40 ± 0.14, respectively. The SEM results suggested that self-compassion was negatively associated with anxiety and depression (-0.44, P < 0.001). Perceived stress was positively associated with anxiety and depression (0.64, P < 0.001). Self-compassion was negatively associated with perceived stress (-0.65, P < 0.001). Self-compassion had no significant correlation with anxiety and depression in the effect of perceived stress (-0.14, P = 0.127). Thus, self-compassion indirectly influences anxiety and depression through perceived stress. CONCLUSIONS Self-compassion might reduce nursing students' anxiety and depression through perceived stress. Interventionists can consider using self-compassion training to alleviate perceived stress, anxiety and depression in nursing students.
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Affiliation(s)
- Y Luo
- School of Nursing, Ningbo College of Health Sciences, PR China
| | - R Meng
- Department of Preventive Medicine, School of Health Sciences, Wuhan University, PR China; Center of Health Administration and Development Studies, Hubei University of Medicine, PR China.
| | - J Li
- Department of Behavioral Sciences and Health Education, Rollins School of Public Health, Emory University, USA
| | - B Liu
- Center of Health Administration and Development Studies, Hubei University of Medicine, PR China.
| | - X Cao
- School of Nursing, Ningbo College of Health Sciences, PR China
| | - W Ge
- School of Nursing, Ningbo College of Health Sciences, PR China
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Lu Z, Zhang C, Han C, An Q, Cheng Y, Chen Y, Meng R, Zhang Y, Su J. Plasticizer Bis(2-ethylhexyl) Phthalate Causes Meiosis Defects and Decreases Fertilization Ability of Mouse Oocytes in Vivo. J Agric Food Chem 2019; 67:3459-3468. [PMID: 30813722 DOI: 10.1021/acs.jafc.9b00121] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Bis(2-ethylhexyl) phthalate (DEHP) is a widely used plasticizer in polyvinyl chloride (PVC) plastics. Humans and animals are widely and continuously exposed to DEHP, especially with respect to diet, which is associated with reproductive diseases. Nevertheless, the effects and underlying mechanisms of DEHP exposure on oocytes in vivo remain ambiguous. In this study, we found that oral administration of DEHP (40 μg/kg body weight per day for 14 days) markedly reduced the maturation and fertilization of oocytes in vivo. In addition, DEHP caused oxidative stress, increased reactive oxygen species generation, promoted early apoptosis, and resulted in DNA damage in mouse oocytes. Moreover, DEHP exposure caused mitochondrial damage, reduced ATP content, down-regulated actin expression, and disturbed the spindle assembly and chromosome alignment in mouse oocytes. Furthermore, DEHP exposure remarkably impaired the localization and protein level of Juno, the sperm receptor on the membrane of oocytes. The levels of DNA methylation, H3K9me3, and H3K9ac were also altered in the DEHP-exposed mouse oocytes. Thus, our results indicated that DEHP exposure reduced the maturation and fertilization capabilities of mouse oocytes by affecting cytoskeletal dynamics, oxidative stress, early apoptosis, meiotic spindle morphology, mitochondria, ATP content, Juno expression, DNA damage, and epigenetic modifications in mouse oocytes.
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Affiliation(s)
- Zhenzhen Lu
- College of Veterinary Medicine , Northwest A&F University , Yangling , Shaanxi Province 712100 , PR China
| | - Chengtu Zhang
- Xining Animal Husbandry and Veterinary Station , Xining , Qinghai Province 810003 , PR China
| | - Chengquan Han
- College of Veterinary Medicine , Northwest A&F University , Yangling , Shaanxi Province 712100 , PR China
| | - Quanli An
- College of Veterinary Medicine , Northwest A&F University , Yangling , Shaanxi Province 712100 , PR China
| | - Yuyao Cheng
- College of Veterinary Medicine , Northwest A&F University , Yangling , Shaanxi Province 712100 , PR China
| | - Yongzhong Chen
- Xining Animal Husbandry and Veterinary Station , Xining , Qinghai Province 810003 , PR China
| | - Ru Meng
- Xining Animal Husbandry and Veterinary Station , Xining , Qinghai Province 810003 , PR China
| | - Yong Zhang
- College of Veterinary Medicine , Northwest A&F University , Yangling , Shaanxi Province 712100 , PR China
| | - Jianmin Su
- College of Veterinary Medicine , Northwest A&F University , Yangling , Shaanxi Province 712100 , PR China
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Bang YJ, Kang YK, Ng M, Chung HC, Wainberg ZA, Gendreau S, Chan WY, Xu N, Maslyar D, Meng R, Chau I, Ajani JA. A phase II, randomised study of mFOLFOX6 with or without the Akt inhibitor ipatasertib in patients with locally advanced or metastatic gastric or gastroesophageal junction cancer. Eur J Cancer 2018; 108:17-24. [PMID: 30592991 DOI: 10.1016/j.ejca.2018.11.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 11/07/2018] [Accepted: 11/11/2018] [Indexed: 01/28/2023]
Abstract
BACKGROUND Akt activation is common in gastric/gastroesophageal junction cancer (GC/GEJC) and is associated with chemotherapy resistance. Treatment with ipatasertib, a pan-Akt inhibitor, may potentiate the efficacy of chemotherapy in GC/GEJC. PATIENTS AND METHODS In this randomised, double-blind, placebo-controlled, multicentre, phase II trial, patients with locally advanced or metastatic GC/GEJC not amenable to curative therapy were randomised 1:1 to receive ipatasertib or placebo, plus mFOLFOX6 (modified regimen of leucovorin, bolus and infusional 5-fluorouracil [5-FU], and oxaliplatin). The co-primary end-point was progression-free survival (PFS) in the intent-to-treat (ITT) population and in phosphatase and tensin homolog (PTEN)-low patients. Secondary end-points included PFS in patients with PI3K/Akt pathway-activated tumours; overall survival, investigator-assessed objective response rate and duration of response in the ITT population; and safety assessments. RESULTS In 153 enrolled patients, the median PFS (ITT) was 6.6 months (90% confidence interval [CI], 5.7-7.5) with ipatasertib/mFOLFOX6 versus 7.5 months (90% CI, 6.2-8.1) with placebo/mFOLFOX6 (hazard ratio, 1.12; 90% CI, 0.81-1.55; P = 0.56). No statistically significant PFS benefit was observed in biomarker-selected patient subgroups (PTEN-low and PI3K/Akt pathway-activated tumours) with ipatasertib/mFOLFOX6 versus placebo/mFOLFOX6. Other secondary end-points did not favour the ipatasertib/mFOLFOX6 treatment arm. The percentages of patients with ≥1 adverse event (AE, 100% versus 98%) and grade ≥3 AEs (79% versus 74%) were similar between arms. Higher rates of AEs leading to treatment withdrawal (16% versus 6%) and serious AEs were reported in the ipatasertib arm (54% versus 43%). Thirty-nine and 29 deaths occurred in the ipatasertib and placebo arms, respectively. CONCLUSIONS Ipatasertib/mFOLFOX6 compared with placebo/mFOLFOX6 did not improve PFS in unselected or biomarker-selected patients. No unexpected safety concerns were observed. TRIAL REGISTRATION ClinicalTrials.gov (NCT01896531).
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Affiliation(s)
- Y-J Bang
- Department of Internal Medicine, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu Seoul 03080, South Korea.
| | - Y-K Kang
- Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea.
| | - M Ng
- National Cancer Centre Singapore, Singapore.
| | - H C Chung
- Department of Medical Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Yonsei University Health System, Yonsei-ro 50-1 Seodaemun-gyu Shinchon-dong 134 Seoul 03722, South Korea.
| | - Z A Wainberg
- David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA.
| | - S Gendreau
- Genentech, Inc., South San Francisco, CA 94080, USA.
| | - W Y Chan
- Genentech, Inc., South San Francisco, CA 94080, USA.
| | - N Xu
- Genentech, Inc., South San Francisco, CA 94080, USA.
| | - D Maslyar
- Genentech, Inc., South San Francisco, CA 94080, USA.
| | - R Meng
- Genentech, Inc., South San Francisco, CA 94080, USA.
| | - I Chau
- The Royal Marsden NHS Foundation Trust, Sutton, Surrey, United Kingdom SM2 5PT UK.
| | - J A Ajani
- Department of Gastrointestinal Medical Oncology, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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Zheng YX, Ma LZ, Liu SJ, Zhang CT, Meng R, Chen YZ, Jiang ZL. Protective effects of trehalose on frozen-thawed ovarian granulosa cells of cattle. Anim Reprod Sci 2018; 200:14-21. [PMID: 30472065 DOI: 10.1016/j.anireprosci.2018.11.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 11/09/2018] [Accepted: 11/13/2018] [Indexed: 01/07/2023]
Abstract
In this study, trehalose was investigated for its cryoprotective effects on ovarian granulosa cells (bGCs) of cattle. Five concentrations of trehalose at 0, 0.2, 0.4, 0.6 and 0.8 mol/L were added to the cryopreservation medium of bGCs, and the effects on the quality of frozen-thawed bGCs were assessed. The results indicate that the use of cryopreservation medium containing 0.2 and 0.4 mol/L of trehalose resulted in a greater rate of bGC viability compared to those of other groups (P<0.05). Culturing with trehalose at 0.2 and 0.4 mol/L increased 17β- estradiol (E2)and decreased progesterone (P4)production (P < 0.05) in post-thawed bGCs. Compared with the control group, the intracellular Ca2+ concentrations of frozen-thawed bGCs were less in all treatment groups (P<0.05), and the least Ca2+ concentration was observed in the group containing 0.4 mol/L trehalose. The plasma membrane potentials of frozen-thawed bGCs were greater in the groups with 0.2 and 0.4 mol/L trehalose, and the group treated with 0.4 mol/L trehalose had the greatest membrane potential in comparison to other groups (P < 0.05). The relative abundance of the CYP19 mRNA in frozen-thawed bGCs was greater in the groups containing 0.2, 0.4 and 0.6 mol/L trehalose, and relative abundances of FSHR and BCL2 mRNA were greater in the group of bGCs treated with 0.2 mol/L trehalose (P<0.05). Trehalose treatment at 0.4, 0.6 and 0.8 mol/L had an inhibitory effect on BAX gene transcription in frozen-thawed bGCs (P<0.05). In summary, trehalose exhibited a greater cryoprotective effect on bGCs than basic cryopreservation medium.
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Affiliation(s)
- Y X Zheng
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - L Z Ma
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - S J Liu
- State Key Laboratory of Plateau Ecology and Agriculture, Key Laboratory of Plateau Grazing Animal Nutrition and Feed Science of Qinghai Province, Qinghai Plateau Yak Research Center, Qinhai University, Xining, Qinghai 810016, China
| | - C T Zhang
- Xining Animal Husbandry and Veterinary Station, Xining, Qinghai 810003, China
| | - R Meng
- Xining Animal Husbandry and Veterinary Station, Xining, Qinghai 810003, China
| | - Y Z Chen
- Xining Animal Husbandry and Veterinary Station, Xining, Qinghai 810003, China
| | - Z L Jiang
- College of Animal Science and Technology, Northwest A & F University, Yangling, Shaanxi 712100, China.
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Wang ST, Liu LB, Li XM, Wang YF, Xie PJ, Li Q, Wang R, Wei Q, Kang YH, Meng R, Feng XH. Circ-ITCH regulates triple-negative breast cancer progression through the Wnt/β-catenin pathway. Neoplasma 2018; 66:232-239. [PMID: 30509108 DOI: 10.4149/neo_2018_180710n460] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 09/12/2018] [Indexed: 11/08/2022]
Abstract
Recent studies indicate that circular RNA (circRNA) is involved in tumorigenesis, but its role in triple-negative breast cancer (TNBC) remains largely unknown. In this study, we characterized the role of circ-ITCH in TNBC and found that circ-ITCH was significantly down-regulated in TNBC tissues and cell lines and closely associated with poor prognosis. We therefore constructed the MDA-MB-231 and BT-549 TNBC cell lines stably expressing circ-ITCH by lentiviral vectors to determine its underlying mechanisms in TNBC progression. Most importantly, over-expression of circ-ITCH remarkably inhibited TNBC proliferation, invasion and metastasis both in vitro and in vivo. Mechanistically, we found that circ-ITCH acts as a sponge for miR-214 and miR-17 to increase expression of its ITCH linear isoform, thereby inactivating Wnt/β-catenin signaling. Our combined results show for the first time that circ-ITCH is a tumor suppressor, a promising prognostic biomarker in TNBC and that its restoration could well be a successful strategy in TNBC.
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Affiliation(s)
- S T Wang
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - L B Liu
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - X M Li
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - Y F Wang
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - P J Xie
- Department of Internal Medicine, The First Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Q Li
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - R Wang
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - Q Wei
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - Y H Kang
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - R Meng
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - X H Feng
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
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Ahn S, Wooster M, Valente C, Moshier E, Meng R, Pisapati K, Couri R, Margolies L, Schmidt H, Port E. Impact of Screening Mammography on Treatment in Women Diagnosed with Breast Cancer. Ann Surg Oncol 2018; 25:2979-2986. [DOI: 10.1245/s10434-018-6646-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Indexed: 12/18/2022]
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Wang K, Meng R, Zhang H, Xu BC. mRNA and protein expression of sarcKATP channel subunit Kir6.2 after exercise-induced myocardial injury in rats. Eur Rev Med Pharmacol Sci 2018; 22:3544-3552. [PMID: 29917209 DOI: 10.26355/eurrev_201806_15181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the expression of kir6.2 subunit of the sarcKATP channel in exercise-induced myocardial injury and to elucidate the underlying mechanism of myocardial protection by sarcKATP channels. MATERIALS AND METHODS Healthy male Sprague Dawley(SD) rats were divided into the Control (C) and the Exhaustive Exercise (EE) group. The one-time exhaustive exercise-induced myocardial injury model was established on a treadmill at a speed of 35 m/min. Alterations in myocardial ischemia and hypoxia were examined by hematoxylin-basic fuchsin-picric acid (HBFP) staining and the concentration of cardiac Troponin I (cTnl), a sensitive and specific marker for myocardial injury, was detected using immunochemiluminescence analysis. The mRNA expression level, localization, and protein expression of sarcKATP channel subunit kir6.2 were determined by quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR), immunofluorescence, and Western blot analysis, respectively. RESULTS When compared to Group C, rats in Group EE demonstrated significantly increased areas of myocardial ischemia and hypoxia. Moreover, increased serum levels of cTnI were detected. Increased kir6.2 expression was found on the surface of cardiomyocytes and kir6.2 protein expression was also significantly increased. CONCLUSIONS Exercise-induced myocardial injury did not result in noticeable alterations in kir6.2 mRNA expression. However, kir6.2 protein expression was significantly increased and resulted in increased numbers of sarcKATP channel openings in the myocardium, thereby further inhibiting exercise-induced myocardial injury.
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Affiliation(s)
- K Wang
- College of Sports Science, Qufu Normal University, Qufu, China.
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Woodham BL, Meng R, Roberts RH. A Novel, Dynamic Statistical Model for Predicting Patient Satisfaction with Fundoplication Based on Pre-Operative Symptom Patterns. World J Surg 2018; 41:2778-2787. [PMID: 28516204 DOI: 10.1007/s00268-017-4057-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
BACKGROUND Fundoplication provides excellent control of gastro-oesophageal reflux disease (GORD), but there remain a number of unsatisfied patients who have proven difficult to identify pre-operatively. We hypothesised that pre-operative symptom patterns can predict of the risk of post-operative dissatisfaction. METHODS Pre-operative symptoms and post-operative satisfaction were measured using standardised questionnaires along with routine investigations. These data were used to calculate our novel pre-operative risk of dissatisfaction (PROD) score. Potential pre-operative prognostic markers were tested against the post-operative satisfaction data, including the objective investigations and the PROD score. The prognostic utility of the PROD score and the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) guideline was tested using receiver operating characteristic analysis to determine the area under the curve (AUC). RESULTS An association was found between our PROD score and each of the satisfaction measures (n = 225, p < 0.001) which is likely to be of prognostic utility (AUC = 0.67-0.79). No such association was found between the routine investigations and post-operative satisfaction. The PROD score was found to be of greater prognostic utility than the SAGES guideline (n = 166, p < 0.001). CONCLUSIONS The PROD score is a novel, easy-to-use test that can predict individual patient satisfaction with fundoplication.
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Affiliation(s)
- B L Woodham
- Department of General Surgery, Christchurch Hospital, Private Bag 4710, Christchurch, 8140, New Zealand.,Department of General Surgery, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - R Meng
- Flinders Centre for Epidemiology and Biostatistics, School of Medicine, Flinders University, Bedford Park, South Australia, Australia
| | - R H Roberts
- Department of General Surgery, Christchurch Hospital, Private Bag 4710, Christchurch, 8140, New Zealand.
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Zhou D, Meng R, Zhang X, Guo L, Li S, Wu W, Duan J, Song H, Ding Y, Ji X. Intracranial hypertension induced by internal jugular vein stenosis can be resolved by stenting. Eur J Neurol 2017; 25:365-e13. [PMID: 29114973 DOI: 10.1111/ene.13512] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 11/02/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND PURPOSE Idiopathic intracranial hypertension (IIH) is characterized by abnormally elevated intracranial pressure (ICP) without identifiable etiology. Recently, however, a subset of patients with presumed IIH have been found with isolated internal jugular vein (IJV) stenosis in the absence of intracranial abnormalities. METHODS Fifteen consecutive patients were screened from 46 patients suspected as IIH and were finally confirmed as isolated IJV stenosis. The stenotic IJV was corrected with stenting when the trans-stenotic mean pressure gradient (∆MPG) was equal to or higher than 5.44 cmH2 O. Dynamic magnetic resonance venography, computed tomographic venography and digital subtraction angiography of the IJV, ∆MPG, ICP, Headache Impact Test 6 and the Frisén papilledema grade score before and after stenting were compared. RESULTS All the stenotic IJVs were corrected by stenting. ∆MPG decreased and the abnormal collateral veins disappeared or shrank immediately. Headache, tinnitus, papilledema and ICP were significantly ameliorated at 14 ± 3 days of follow-up (all P < 0.01). At 12 ± 5.6 months of outpatient follow-up, headache disappeared in 14 out of 15 patients (93.3%), visual impairments were recovered in 10 of 12 patients (83.3%) and tinnitus resolved in 10 out of 11 patients (90.9%). In 12 out of 15 cases, the Frisén papilledema grade scores declined to 1 (0-2). The stented IJVs in all 15 patients kept to sufficient blood flows on computed tomographic venography follow-up without stenting-related adverse events. CONCLUSIONS Non-thrombotic IJV stenosis may be a potential etiology of IIH. Stenting seems to be a promising option to address the issue of intracranial hypertension from the etiological level, particularly after medical treatment failure.
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Affiliation(s)
- D Zhou
- Departments of Neurology, Neurosurgery, and Ophthalmology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Beijing Institute for Brain Disorders, Beijing, China
| | - R Meng
- Departments of Neurology, Neurosurgery, and Ophthalmology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Beijing Institute for Brain Disorders, Beijing, China
| | - X Zhang
- Departments of Neurology, Neurosurgery, and Ophthalmology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Beijing Institute for Brain Disorders, Beijing, China
| | - L Guo
- Departments of Neurology, Neurosurgery, and Ophthalmology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Beijing Institute for Brain Disorders, Beijing, China
| | - S Li
- Departments of Neurology, Neurosurgery, and Ophthalmology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Beijing Institute for Brain Disorders, Beijing, China
| | - W Wu
- Departments of Neurology, Neurosurgery, and Ophthalmology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Beijing Institute for Brain Disorders, Beijing, China
| | - J Duan
- Departments of Neurology, Neurosurgery, and Ophthalmology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Beijing Institute for Brain Disorders, Beijing, China
| | - H Song
- Departments of Neurology, Neurosurgery, and Ophthalmology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Beijing Institute for Brain Disorders, Beijing, China
| | - Y Ding
- Beijing Institute for Brain Disorders, Beijing, China.,Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - X Ji
- Departments of Neurology, Neurosurgery, and Ophthalmology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Beijing Institute for Brain Disorders, Beijing, China
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Van Ryswyk E, Quan W, Meng R, Li Q, Anderson C, Woodman R, Loffler K, Zheng D, McEvoy R. Effects of cpap therapy on blood pressure variability (BPV) in people with comorbid obstructive sleep apnoea (OSA) and cardiovascular disease (CVD): save trial. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.983] [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: 11/16/2022]
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Meng R, Chen Y, Zhang X, Dong X, Ma H, Wang G. Synthesis of a hydrophilic α-sulfur/PDA composite as a metal-free photocatalyst with enhanced photocatalytic performance under visible light. Journal of Macromolecular Science, Part A 2017. [DOI: 10.1080/10601325.2017.1294461] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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46
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Zhai X, Meng R, Li H, Li J, Jing L, Qin L, Gao Y. miR-181a Modulates Chondrocyte Apoptosis by Targeting Glycerol-3-Phosphate Dehydrogenase 1-Like Protein (GPD1L) in Osteoarthritis. Med Sci Monit 2017; 23:1224-1231. [PMID: 28280258 PMCID: PMC5360418 DOI: 10.12659/msm.899228] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND miR-181a is a small non-coding RNA known to be dysregulated in osteoarthritis (OA), but the role of miR-181a in human OA remains unclear. The aim of this study was to identify its function and molecular target in chondrocytes during OA pathogenesis. MATERIAL AND METHODS The function of miR-181a was assessed by gain-of-function studies in human OA chondrocytes. Potential targets of miR-181a were predicted using series of bioinformatics and intersection analysis, then confirmed by luciferase reporter assay. Gene expression was quantified using quantitative reverse transcription PCR (qRT-PCR) assays, and protein production was quantified by Western blot analysis. RESULTS The FITC apoptosis assay results indicated that the upregulation of miR-181a led to an increase of apoptosis rate in chondrocytes. Then bioinformatic analysis identified potential target sites of the miR-181a located in the 3' untranslated region of GPD1L. Dual-luciferase reporter assays results showed that GPD1L is a target gene of miR-181a. Furthermore, Western blot and qRT-PCR analysis demonstrated that miR-181a inhibited GPD1L gene expression. Increased GPD1L and decreased miRNA-181a were observed in tissues from osteoarthritis patients. Moreover, we found a highly negative correlation between miRNA-181a and GPD1L. CONCLUSIONS Our results demonstrated that miR-181a may play an important role in the pathogenesis of OA through targeting GPD1L and regulating chondrocyte apoptosis.
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Affiliation(s)
- Xicheng Zhai
- Department of Orthopedics, Shanxian Central Hospital, Heze, Shandong, China (mainland)
| | - Ru Meng
- Department of Orthopedics, Shanxian Central Hospital, Heze, Shandong, China (mainland)
| | - Hongbiao Li
- Department of Orthopedics, Shanxian Central Hospital, Heze, Shandong, China (mainland)
| | - Jie Li
- Department of Orthopedics, Shanxian Central Hospital, Heze, Shandong, China (mainland)
| | - Lei Jing
- Department of Orthopedics, Shanxian Central Hospital, Heze, Shandong, China (mainland)
| | - Lei Qin
- Department of Orthopedics, Shanxian Central Hospital, Heze, Shandong, China (mainland)
| | - Yulei Gao
- Department of Orthopedics, The 88th Hospital of PLA, Taian, Shandong, China (mainland)
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Zhou Y, Zhang S, Li K, Dong XR, Liu L, Wu G, Meng R. [The underlying mechanisms of overcoming EGFR-TKIs resistance by casein kinase 2 inhibitor]. Zhonghua Zhong Liu Za Zhi 2017; 38:321-4. [PMID: 27188602 DOI: 10.3760/cma.j.issn.0253-3766.2016.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Nowadays, EGFR-TKIs are important treatment strategy in lung cancer, but the resistance to EGFR-TKIs remains an unsolved issue preventing the patients from further benefits. Recent studies have shown that casein kinase (CK2) plays an important role in carcinogenesis and development of cancer. CK2 inhibitor has also demonstrated anti-tumor effects. Here we reviewed the mechanism of EGFR-TKIs and the potential reasons of resistance. Interestingly, there is a crosstalk between CK2 and EGFR downstream signaling pathways, therefore, it may be possible that CK2 inhibitor can overcome the EGFR-TKIs resistance.
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Affiliation(s)
- Y Zhou
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - S Zhang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - K Li
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - X R Dong
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - L Liu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - G Wu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - R Meng
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
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Liu Z, Meng R, Zhao X, Shi C, Zhang X, Zhang Y, Guo N. Inhibition effect of tea tree oil onListeria monocytogenesgrowth and exotoxin proteins listeriolysin O and p60 secretion. Lett Appl Microbiol 2016; 63:450-457. [DOI: 10.1111/lam.12666] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 06/29/2016] [Accepted: 09/01/2016] [Indexed: 12/18/2022]
Affiliation(s)
- Z. Liu
- Department of Food Quality and Safety; College of Food Science and Engineering; Jilin University; Changchun China
| | - R. Meng
- Jilin Enrty-exit Inspection And Quarantine Bureau; Changchun China
| | - X. Zhao
- Department of Food Quality and Safety; College of Food Science and Engineering; Jilin University; Changchun China
| | - C. Shi
- Department of Food Quality and Safety; College of Food Science and Engineering; Jilin University; Changchun China
| | - X. Zhang
- Department of Food Quality and Safety; College of Food Science and Engineering; Jilin University; Changchun China
| | - Y. Zhang
- Department of Food Quality and Safety; College of Food Science and Engineering; Jilin University; Changchun China
| | - N. Guo
- Department of Food Quality and Safety; College of Food Science and Engineering; Jilin University; Changchun China
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Meng R, Yang Z, Wang HL, Han YW, Wang YL, Yu H. [Variation of long-chain 3-hydroxyacyl CoA dehydrogenase DNA methylated modification and correlation with gene mRNA expression of early-onset preeclampsia, HELLP syndrome and antiphospholipid syndrome in trophoblast cells of placenta]. Zhonghua Fu Chan Ke Za Zhi 2016; 51:270-8. [PMID: 27116985 DOI: 10.3760/cma.j.issn.0529-567x.2016.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE By detecting the DNA methylation and gene expression of long-chain 3-hydroxyacyl CoA dehydrogenase(LCHAD)in trophoblast cells, analyze the correlation of DNA methylation and gene expression in early-onset preeclampsia(EPE), hemolysis, elevated liver enzymes, and low platelets(HELLP)syndrome and antiphospholipid syndrome(APS), to investigate the molecular basis of long-chain fatty acid oxidation changes in different preeclampsia and pathological pregnancy. METHODS Primary human cytotrophoblast cells and HTR8/Svneo cells were treated with serum from patients with EPE(14 cases), HELLP(12 cases), APS(14 cases), and normal pregnant women(NP, 14 cases). The methylation level of LCHAD gene promoter region through the MassARRAY platform and mRNA expression level by real-time fluorescent quantitative PCR technique were conducted. RESULTS (1)Cytosine-phosphate-guanine(CpG)sites in human LCHAD DNA promoter region: CpG sites were detected in the range of 558 bp before LCHAD gene transcription start site, the detected CpG sites were 11 sites including 8 single sites and 3 complex sites. The position of these sites were at-984,-960,-899,-853,-811,-796,-774,-727,-615,-595,-579 respectively.(2)The sites of-899,-853,-615 and-595 showed increased methylation level in EPE and HELLP groups. The methylation level at-899,-853 and-615 sites in EPE and HELLP groups were significantly higher than those in NP group(P<0.01). The methylation level at-853 site was higher in EPE group than that in HELLP group(P<0.05). The-595 site showed the unmethylated in EPE, HELLP and APS groups. There were significantly difference between the 3 groups and EPE group(P<0.01).(3)The gene expression of LCHAD mRNA in EPE(0.048±0.005), HELLP(0.045±0.006)and APS(0.044±0.004)groups were significantly lower than NP group(0.076±0.009; P<0.01).(4)The correlation of methylation level and gene expression in all groups: the methylation level at-899,-853,-727,-615 and-579 sites were negatively correlated with gene mRNA expression in EPE group(P<0.05). The methylation level at-899,-853 and-615 sites were negatively correlated with gene mRNA expression in HELLP group(P< 0.05). CONCLUSIONS The variation of LCHAD DNA methylation of trophoblast cells are found among EPE, HELLP syndrome and APS. The different correlation of LCHAD DNA methylation and gene expression are different in pathological groups. LCHAD DNA methylation of EPE and HELLP syndrome were significantly increased and negatively correlated with LCHAD gene mRNA expression. These results further revealed the molecular basis of long-chain fatty acid oxidation in different preeclampsia and pathological pregnancy.
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Affiliation(s)
- R Meng
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
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Zhou Y, Zhang S, Li K, Li QW, Zhou FZ, Li ZY, Ma H, Dong XR, Liu L, Wu G, Meng R. [The CK2 inhibitor quninalizarin enhances the anti-proliferative effect of icotinib on EGFR-TKIs-resistant cell lines and its underlying mechanisms]. Zhonghua Zhong Liu Za Zhi 2016; 38:100-4. [PMID: 26899328 DOI: 10.3760/cma.j.issn.0253-3766.2016.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To explore whether quninalizarin, an specific inhibitor of protein kinase CK2, could sensitize icotinib in EGFR-TKIs (epithelial growth factor receptor-tyrosine kinase inhibitor)-resistant cell lines and uncover the underlying mechanisms. METHODS MTT assay was performed to evaluate the inhibitory effect of quninalizarin, icotinib or the combination of both on cell proliferation in several lung adenocarcinoma cell lines. Western blot assay was used to assess if combined inhibition of EGFR and protein kinase CK2 by icotinib and quninalizarin, exerts effect on the expression and phosphorylation of major proteins of EGFR signaling pathways. RESULTS The IC50 of HCC827, H1650, H1975 and A549 cells for icotinib were (8.07±2.00)μmol/L, (66.01±6.64)μmol/L, (265.60±9.47)μmol/L and (87.88±6.8)μmol/L, respectively, indicating that HCC827 cells are sensitive to icotinib, and the H1650, H1975 and A549 cells are relatively resistant to icotinib. When treated with both quninalizarin and icotinib in the concentration of 50 μmol/L, the viability of H1650, H1975 and A549 cells was (40.64±3.73)%, (65.74±3.27)% and (44.96±0.48)%, respectively, significantly lower than that of H1650, H1975 and A549 cells treated with 50 μmol/L icotinib alone (55.05±1.22)%, (71.98±1.60)% and (61.74±6.18)%, respectively (P<0.01 for all). When treated with both 100 μmol/L quninalizarin and 100 μmol/L icotinib, the viability of H1650, H1975 and A549 ells were (23.35±0.81)%, (55.70±1.03)%, (33.42±1.33)%, respectively, significantly lower than the viability of H1650, H1975 and A549 cells treated with 100 μmol/L icotinib alone (40.57±2.65)%, (62.40±2.05)% and (44.97±8.20)%, respectively, (P<0.01 for all). The two-way ANOVA analysis showed that compared with the viability of EGFR-TKIs-resistant cells (H1650, H1975, A549) treated with 50 μmol/L and 100 μmol/L icotinib alone, the viability of cells treated with icotinib and quinalizarin were significantly suppressed, and the differences were statistically significant (P<0.01). In addition, the phosphorylation form of Akt and ERK (namely p-Akt and p-ERK) were significantly down-regulated by treating with quninalizarin and icotinib together in the H1650 cells while the expression of Akt and ERK changed little. CONCLUSIONS Quinalizarin, as a specific CK2 inhibitor, may overcome icotinib resistance by inhibiting proliferation mediated by Akt and ERK in human lung adenocarcinoma cell lines, and enhances the suppressive effect of icotinib on the proliferation of EGFR-TKIs-resistant human lung adenocarcinoma cells.
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Affiliation(s)
- Y Zhou
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - S Zhang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - K Li
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - Q W Li
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - F Z Zhou
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - Z Y Li
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - H Ma
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - X R Dong
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - L Liu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - G Wu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
| | - R Meng
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430023, China
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