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Liang P, Wu Y, Zheng S, Zhang J, Yang S, Wang J, Ma S, Zhang M, Gu Z, Liu Q, Jiang W, Xing Q, Wang B. Paxillin phase separation promotes focal adhesion assembly and integrin signaling. J Cell Biol 2024; 223:e202209027. [PMID: 38466167 PMCID: PMC10926639 DOI: 10.1083/jcb.202209027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 12/04/2022] [Accepted: 02/27/2023] [Indexed: 03/12/2024] Open
Abstract
Focal adhesions (FAs) are transmembrane protein assemblies mediating cell-matrix connection. Although protein liquid-liquid phase separation (LLPS) has been tied to the organization and dynamics of FAs, the underlying mechanisms remain unclear. Here, we experimentally tune the LLPS of PXN/Paxillin, an essential scaffold protein of FAs, by utilizing a light-inducible Cry2 system in different cell types. In addition to nucleating FA components, light-triggered PXN LLPS potently activates integrin signaling and subsequently accelerates cell spreading. In contrast to the homotypic interaction-driven LLPS of PXN in vitro, PXN condensates in cells are associated with the plasma membrane and modulated by actomyosin contraction and client proteins of FAs. Interestingly, non-specific weak intermolecular interactions synergize with specific molecular interactions to mediate the multicomponent condensation of PXN and are efficient in promoting FA assembly and integrin signaling. Thus, our data establish an active role of the PXN phase transition into a condensed membrane-associated compartment in promoting the assembly/maturation of FAs.
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Affiliation(s)
- Peigang Liang
- State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Yuchen Wu
- State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Shanyuan Zheng
- State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Jiaqi Zhang
- State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Shuo Yang
- State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Jinfang Wang
- State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Suibin Ma
- State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Mengjun Zhang
- State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Zhuang Gu
- State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Qingfeng Liu
- State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Wenxue Jiang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan, China
| | - Qiong Xing
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan, China
| | - Bo Wang
- State Key Laboratory of Cellular Stress Biology, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
- Shenzhen Research Institute of Xiamen University, Shenzhen, China
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Zhang SQ, Wu ZQ, Huo BW, Xu HN, Zhao K, Jing CQ, Liu FL, Yu J, Li ZR, Zhang J, Zang L, Hao HK, Zheng CH, Li Y, Fan L, Huang H, Liang P, Wu B, Zhu JM, Niu ZJ, Zhu LH, Song W, You J, Yan S, Li ZY. [Incidence of postoperative complications in Chinese patients with gastric or colorectal cancer based on a national, multicenter, prospective, cohort study]. Zhonghua Wei Chang Wai Ke Za Zhi 2024; 27:247-260. [PMID: 38532587 DOI: 10.3760/cma.j.cn441530-20240218-00067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Objective: To investigate the incidence of postoperative complications in Chinese patients with gastric or colorectal cancer, and to evaluate the risk factors for postoperative complications. Methods: This was a national, multicenter, prospective, registry-based, cohort study of data obtained from the database of the Prevalence of Abdominal Complications After Gastro- enterological Surgery (PACAGE) study sponsored by the China Gastrointestinal Cancer Surgical Union. The PACAGE database prospectively collected general demographic characteristics, protocols for perioperative treatment, and variables associated with postoperative complications in patients treated for gastric or colorectal cancer in 20 medical centers from December 2018 to December 2020. The patients were grouped according to the presence or absence of postoperative complications. Postoperative complications were categorized and graded in accordance with the expert consensus on postoperative complications in gastrointestinal oncology surgery and Clavien-Dindo grading criteria. The incidence of postoperative complications of different grades are presented as bar charts. Independent risk factors for occurrence of postoperative complications were identified by multifactorial unconditional logistic regression. Results: The study cohort comprised 3926 patients with gastric or colorectal cancer, 657 (16.7%) of whom had a total of 876 postoperative complications. Serious complications (Grade III and above) occurred in 4.0% of patients (156/3926). The rate of Grade V complications was 0.2% (7/3926). The cohort included 2271 patients with gastric cancer with a postoperative complication rate of 18.1% (412/2271) and serious complication rate of 4.7% (106/2271); and 1655 with colorectal cancer, with a postoperative complication rate of 14.8% (245/1655) and serious complication rate of 3.0% (50/1655). The incidences of anastomotic leakage in patients with gastric and colorectal cancer were 3.3% (74/2271) and 3.4% (56/1655), respectively. Abdominal infection was the most frequently occurring complication, accounting for 28.7% (164/572) and 39.5% (120/304) of postoperative complications in patients with gastric and colorectal cancer, respectively. The most frequently occurring grade of postoperative complication was Grade II, accounting for 65.4% (374/572) and 56.6% (172/304) of complications in patients with gastric and colorectal cancers, respectively. Multifactorial analysis identified (1) the following independent risk factors for postoperative complications in patients in the gastric cancer group: preoperative comorbidities (OR=2.54, 95%CI: 1.51-4.28, P<0.001), neoadjuvant therapy (OR=1.42, 95%CI:1.06-1.89, P=0.020), high American Society of Anesthesiologists (ASA) scores (ASA score 2 points:OR=1.60, 95% CI: 1.23-2.07, P<0.001, ASA score ≥3 points:OR=0.43, 95% CI: 0.25-0.73, P=0.002), operative time >180 minutes (OR=1.81, 95% CI: 1.42-2.31, P<0.001), intraoperative bleeding >50 mL (OR=1.29,95%CI: 1.01-1.63, P=0.038), and distal gastrectomy compared with total gastrectomy (OR=0.65,95%CI: 0.51-0.83, P<0.001); and (2) the following independent risk factors for postoperative complications in patients in the colorectal cancer group: female (OR=0.60, 95%CI: 0.44-0.80, P<0.001), preoperative comorbidities (OR=2.73, 95%CI: 1.25-5.99, P=0.030), neoadjuvant therapy (OR=1.83, 95%CI:1.23-2.72, P=0.008), laparoscopic surgery (OR=0.47, 95%CI: 0.30-0.72, P=0.022), and abdominoperineal resection compared with low anterior resection (OR=2.74, 95%CI: 1.71-4.41, P<0.001). Conclusion: Postoperative complications associated with various types of infection were the most frequent complications in patients with gastric or colorectal cancer. Although the risk factors for postoperative complications differed between patients with gastric cancer and those with colorectal cancer, the presence of preoperative comorbidities, administration of neoadjuvant therapy, and extent of surgical resection, were the commonest factors associated with postoperative complications in patients of both categories.
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Affiliation(s)
- S Q Zhang
- Department of Public Health, Qinghai University School of Medicine, Xining 810001, China
| | - Z Q Wu
- Gastrointestinal Cancer Center, Beijing Cancer Hospital, Beijing 100142, China
| | - B W Huo
- Department of Gastrointestinal (Oncology) Surgery, Affiliated Hospital of Qinghai University, Xining 810001, China
| | - H N Xu
- Department of Gastrointestinal (Oncology) Surgery, Affiliated Hospital of Qinghai University, Xining 810001, China
| | - K Zhao
- Department of Gastrointestinal (Oncology) Surgery, Affiliated Hospital of Qinghai University, Xining 810001, China
| | - C Q Jing
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital, Jinan 250021, China
| | - F L Liu
- Department of Gastric Surgery, Cancer Hospital, Fudan University, Shanghai 200025, China
| | - J Yu
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Z R Li
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - J Zhang
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Zhejiang University, Hangzhou 310003, China
| | - L Zang
- Department of Gastrointestinal Surgery, Ruijin Hospital, Shanghai Jiao Tong University, Shanghai 200025, China
| | - H K Hao
- Department of Gastrointestinal Surgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - C H Zheng
- Department of Gastroenterology, Union Hospital of Fujian Medical University, Fuzhou 350001, China
| | - Y Li
- Department of Gastrointestinal Surgery, Guangdong Provincial People's Hospital, Guangzhou 510080, China
| | - L Fan
- Department of General Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - H Huang
- Department of Gastric Surgery, Cancer Hospital, Fudan University, Shanghai 200025, China
| | - P Liang
- Department of Gastrointestinal Surgery, the First Hospital of Dalian Medical University, Dalian 116011, China
| | - B Wu
- Department of Basic Surgery, Union Hospital of Peking Union Medical College, Beijing 100032, China
| | - J M Zhu
- Department of Gastrointestinal Oncology, the First Affiliated Hospital of China Medical University, Shenyang 110002, China
| | - Z J Niu
- Department of Gastrointestinal Surgery, Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - L H Zhu
- Department of Gastrointestinal Surgery, Run Run Shaw Hospital, Zhejiang University, Hangzhou 310009, China
| | - W Song
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510062, China
| | - J You
- Department of Gastrointestinal Oncology, the First Affiliated Hospital of Xiamen University, Xiamen 361003, China;Zhang Shuqin is now working at Department of Infection Management, Suqian Hospital, Xuzhou Medical University
| | - S Yan
- Department of Gastrointestinal (Oncology) Surgery, Affiliated Hospital of Qinghai University, Xining 810001, China
| | - Z Y Li
- Gastrointestinal Cancer Center, Beijing Cancer Hospital, Beijing 100142, China
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Sang D, Fan SM, Li SY, Zhang JT, Wang HM, Zhao XH, Zheng LJ, Liang P, Xi GB, Zhao LM, Zhang YR, Yuan P. [Mid-term analysis of prospective cohort study of rivaroxaban in preventing CRT in breast cancer]. Zhonghua Zhong Liu Za Zhi 2024; 46:256-262. [PMID: 38494772 DOI: 10.3760/cma.j.cn112152-20231024-00218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Objective: To explore the efficacy and safety of Rivaroxaban in preventing catheter related thrombosis (CRT) in patients with breast cancer who are undergoing central venous catheter chemotherapy, and provide basis for making standardized prevention and treatment strategies. Methods: In this research, a prospective cohort study was adopted, and breast cancer patients who received central venous catheter chemotherapy in Sanhuan Cancer Hospital during September 2020 to March 2022 were selected as a treatment group to take the rivaroxaban anticoagulation therapy with 10 mg.po.qd for one month. The control group got no preventive anticoagulation therapy. Vascular ultrasound examination was taken to confirm the occurrence of CRT, and a chi-square test was done for comparison the disparity between the groups. Logistic regression was applied to analyze the univariate and multivariate factors for the formation of CRT. Results: In the research, a total of 235 patients were selected, and there were a total of 19 035 days of catheterization with 81 days of catheterization on average. While in the control group, the incidence of CRT was 28.0% (33/118), the incidence of CRT in the treatment group was 20.5% (24/117), the difference was no significant (P=0.183). Subgroup analysis results showed that the peripherally inserted central catheter (PICC) was performed in 165 cases with the CRT incidence of 18.2% (30/165) and thrombosis was mostly seen around axillary vein, accounting for 63.3%. Subclavian vein catheterization was performed in 63 cases with the CRT incidence of 39.7% (25/63), and thrombosis was mostly seen around subclavian vein, accounting for 88.0% (22/25). Implantable venous access port was implanted in 7 cases around subclavian vein and internal jugular vein with the CRT incidence of 28.6% (2/7). The patients who developed CRT within 30 days after catheterization accounted for 54.4% (31/57), 22.8% (13/57) in a period during 30 days and 60 days) and 22.8% (13/57) in a period during 60 days and 180 days). The diagnosed CRT patients had been treated with rivaroxaban 15 mg.bid.po for 3 months. During the 3 months, 100.0% of the thrombosis waned, 71.9% (41/57) of the thrombosis waned within 30 days, 19.3% (11/57) in a period during 30 and 60days and 8.8% (5/57) in a period during 60 days and 90 days. Univariate and multivariate analysis indicated that the risk of CRT in subclavian vein catheterization was higher than that in PICC, respectively (OR=2.898, 95% CI:1.386-6.056 P=0.005), and the type of catheterization was an independent factor for the formation of thrombosis. Safety analysis result showed that in the prevention of CRT, rivaroxaban treatment did not induce drug-related bleeding, liver function damage, bone marrow suppression or any other side effects. While CRT diagnosed patients were treated with anticoagulation, they kept the central venous catheter, and the infusion was smooth. These patients all finished the anti-tumor treatment as planned, and no abnormalities like new thrombosis or pulmonary embolism were observed. Conclusions: In the mid-term analysis, the proportion of Rivaroxaban in preventing anticoagulant CRT decreases, but it don't reach statistical significance. The sample size should be further increased for observation. Rivaroxaban is proved effective and very safe in the treatment of CRT, and does not affect the concurrent chemotherapy. Medical personnel should carry out the policy of "early prevention, early detection and early treatment" for CRT so as to improve the patients' quality of life.
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Affiliation(s)
- D Sang
- Department of Medical Oncology, Beijing Chaoyang District Sanhuan Cancer Hospital, Beijing 100122,China
| | - S M Fan
- Department of Medical Oncology, Beijing Chaoyang District Sanhuan Cancer Hospital, Beijing 100122,China
| | - S Y Li
- Department of Medical Oncology, Beijing Chaoyang District Sanhuan Cancer Hospital, Beijing 100122,China
| | - J T Zhang
- Department of Medical Oncology, Beijing Chaoyang District Sanhuan Cancer Hospital, Beijing 100122,China
| | - H M Wang
- Department of Medical Oncology, Beijing Chaoyang District Sanhuan Cancer Hospital, Beijing 100122,China
| | - X H Zhao
- Department of Medical Oncology, Beijing Chaoyang District Sanhuan Cancer Hospital, Beijing 100122,China
| | - L J Zheng
- Department of Medical Oncology, Beijing Chaoyang District Sanhuan Cancer Hospital, Beijing 100122,China
| | - P Liang
- Department of Medical Oncology, Beijing Chaoyang District Sanhuan Cancer Hospital, Beijing 100122,China
| | - G B Xi
- Department of Medical Oncology, Beijing Chaoyang District Sanhuan Cancer Hospital, Beijing 100122,China
| | - L M Zhao
- Department of VIP Medical Services, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y R Zhang
- Department of Medical Oncology, Beijing Chaoyang District Sanhuan Cancer Hospital, Beijing 100122,China
| | - P Yuan
- Department of VIP Medical Services, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Fan FY, Ding WZ, Liu FY, Cheng ZG, Han ZY, Yu XL, Liang P, Yu J. [Spatial distribution pattern of local tumor progression analysis after microwave ablation of hepatocellular carcinoma based on three-dimensional magnetic resonance imaging]. Zhonghua Gan Zang Bing Za Zhi 2024; 32:208-213. [PMID: 38584101 DOI: 10.3760/cma.j.cn501113-20231123-00219] [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] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Objective: To investigate the spatial distribution pattern of local tumor progression (LTP) for hepatocellular carcinoma (HCC) ≤5 cm after microwave ablation. Methods: A retrospective analysis was performed on 169 HCCs with matched MRI before and after ablation from December 2009 to December 2019. A tumor MRI was reconstructed using three-dimensional visualization technology. LTP was classified as contact or non-contact, early or late stage, according to whether LTP was in contact with the edge of the ablation zone and the occurrence time (24 months). The tumor-surrounded area was divided into eight quadrants by using the eight-quadrant map method. An analysis was conducted on the spatial correlation between the quadrant where the ablative margin (AM) safety boundary was located and the quadrant where different types of LTP occurred. The t-test, or rank-sum test, was used for the measurement data. 2-test for count data was used to compare the difference between the two groups. Results: The AM quadrant had a distribution of 54.4% LTP, 64.2% early LTP stage, and 69.1% contact LTP, suggesting this quadrant was much more concentrated than the other quadrants (P < 0.001). Additionally, the AM quadrant had only 15.2% of non-contact type LTP and 17.1% of late LTP, which was not significantly different from the average distribution probability of 12.5% (100/8%) among the eight quadrants (P = 0.667, 0.743). 46.6% of early contact type LTP was located at the ablation needle tip, 25.2% at the body, and 28.1% at the caudal, while the location distribution probabilities of non-early contact LTP were 34.8%, 31.8%, and 33.3%, respectively. Conclusion: LTP mostly occurs in areas where the ablation safety boundary is the shortest. However, non-contact LTP and late LTP stages exhibit the feature of uniform distribution. Thus, this type of LPT may result from an inadequate non-ablation safety boundary.
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Affiliation(s)
- F Y Fan
- Fifth Medical Center of Chinese PLA General Hospital, Beijing 100039, China Chinese PLA Medical School, Beijing 100853, China
| | - W Z Ding
- Fifth Medical Center of Chinese PLA General Hospital, Beijing 100039, China
| | - F Y Liu
- Fifth Medical Center of Chinese PLA General Hospital, Beijing 100039, China Chinese PLA Medical School, Beijing 100853, China
| | - Z G Cheng
- Fifth Medical Center of Chinese PLA General Hospital, Beijing 100039, China Chinese PLA Medical School, Beijing 100853, China
| | - Z Y Han
- Fifth Medical Center of Chinese PLA General Hospital, Beijing 100039, China
| | - X L Yu
- Chinese PLA Medical School, Beijing 100853, China
| | - P Liang
- Fifth Medical Center of Chinese PLA General Hospital, Beijing 100039, China Chinese PLA Medical School, Beijing 100853, China
| | - J Yu
- Fifth Medical Center of Chinese PLA General Hospital, Beijing 100039, China Chinese PLA Medical School, Beijing 100853, China
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Leung KY, Bala K, Cho JY, Gokhale S, Kikuchi A, Liang P, Ong CL, Nguyen-Phuoc QB, Wataganara T, Wan YL. Utility and challenges of ultrasound education for medical and allied health students in Asia. Hong Kong Med J 2024; 30:75-79. [PMID: 38327163 DOI: 10.12809/hkmj2210647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024] Open
Affiliation(s)
- K Y Leung
- Gleneagles Hospital Hong Kong, Hong Kong SAR, China
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong SAR, China
| | - K Bala
- Bangladesh Institute of Ultrasound in Medicine and Research, University of Science and Technology Chittagong, Dhaka, Bangladesh
| | - J Y Cho
- Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - S Gokhale
- Department of Radiology, Sri Aurobindo Institute of Medical Sciences, Sri Aurobindo University, Indore, India
| | - A Kikuchi
- Department of Obstetrics and Gynecology, Saitama Medical Center, Saitama Medical University, Moroyama, Japan
| | - P Liang
- Department of Ultrasound, Fifth Medical Center of Chinese People's Liberation Army General Hospital, Beijing, China
| | - C L Ong
- Department of Diagnostic and Interventional Imaging, KK Women's and Children's Hospital, Singapore
| | - Q B Nguyen-Phuoc
- Department of Medical Imaging, Can Tho University Hospital, Can Tho University of Medicine and Pharmacy, Can Tho, Vietnam
| | - T Wataganara
- Department of Obstetrics and Gynecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Y L Wan
- Department of Medical Imaging and Intervention, Linkou Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan, Taiwan
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Liang P, Wang B. An autophagy-independent role of ULK1/ULK2 in mechanotransduction and breast cancer cell migration. Autophagy 2024:1-2. [PMID: 38163960 DOI: 10.1080/15548627.2023.2300916] [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: 12/04/2023] [Accepted: 12/27/2023] [Indexed: 01/03/2024] Open
Abstract
The progression of breast cancer is often accompanied by changes in extracellular matrix stiffness and cell adhesion ability, which are closely related to cellular mechanotransduction. However, the underlying regulatory mechanisms remain mysterious. Our study reveals that the macroautophagy/autophagy-inducing kinases, ULK1 and ULK2, inhibit the assembly of focal adhesions and F-actin by phosphorylating the adhesion protein PXN, to prevent breast cancer cell migration in an autophagy-independent fashion. Interestingly, ULK1/ULK2-mediated serine phosphorylation of PXN counteracts PXN phosphorylation at the adjacent tyrosine residues by PTK2 and SRC, to gatekeep cellular mechanotransduction. Our research establishes a new function of ULK1/ULK2 in governing cellular mechanotransduction that might be harnessed for treating breast cancer.
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Affiliation(s)
- Peigang Liang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, Fujian, China
| | - Bo Wang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, Fujian, China
- Shenzhen Research Institute of Xiamen University, Shenzhen, Guangdong, China
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Liang P, Zhang J, Wu Y, Zheng S, Xu Z, Yang S, Wang J, Ma S, Xiao L, Hu T, Jiang W, Huang C, Xing Q, Kundu M, Wang B. An ULK1/2-PXN mechanotransduction pathway suppresses breast cancer cell migration. EMBO Rep 2023; 24:e56850. [PMID: 37846507 PMCID: PMC10626438 DOI: 10.15252/embr.202356850] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 09/09/2023] [Accepted: 09/27/2023] [Indexed: 10/18/2023] Open
Abstract
The remodeling and stiffening of the extracellular matrix (ECM) is a well-recognized modulator of breast cancer progression. How changes in the mechanical properties of the ECM are converted into biochemical signals that direct tumor cell migration and metastasis remain poorly characterized. Here, we describe a new role for the autophagy-inducing serine/threonine kinases ULK1 and ULK2 in mechanotransduction. We show that ULK1/2 activity inhibits the assembly of actin stress fibers and focal adhesions (FAs) and as a consequence impedes cell contraction and migration, independent of its role in autophagy. Mechanistically, we identify PXN/paxillin, a key component of the mechanotransducing machinery, as a direct binding partner and substrate of ULK1/2. ULK-mediated phosphorylation of PXN at S32 and S119 weakens homotypic interactions and liquid-liquid phase separation of PXN, impairing FA assembly, which in turn alters the mechanical properties of breast cancer cells and their response to mechanical stimuli. ULK1/2 and the well-characterized PXN regulator, FAK/Src, have opposing functions on mechanotransduction and compete for phosphorylation of adjacent serine and tyrosine residues. Taken together, our study reveals ULK1/2 as important regulator of PXN-dependent mechanotransduction.
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Affiliation(s)
- Peigang Liang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Jiaqi Zhang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Yuchen Wu
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Shanyuan Zheng
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Zhaopeng Xu
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Shuo Yang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Jinfang Wang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Suibin Ma
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Li Xiao
- Department of OncologyZhongshan Hospital of Xiamen UniversityXiamenChina
| | - Tianhui Hu
- Cancer Research Center, School of MedicineXiamen UniversityXiamenChina
| | - Wenxue Jiang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio‐Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life SciencesHubei UniversityWuhanChina
| | - Chaoqun Huang
- Central LaboratoryThe Fifth Hospital of XiamenXiamenChina
| | - Qiong Xing
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio‐Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life SciencesHubei UniversityWuhanChina
| | - Mondira Kundu
- Department of Cell and Molecular BiologySt. Jude Children's Research HospitalMemphisTNUSA
| | - Bo Wang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
- Shenzhen Research Institute of Xiamen UniversityShenzhenChina
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8
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Liang P, Zhang J, Wang B. Emerging Roles of Ubiquitination in Biomolecular Condensates. Cells 2023; 12:2329. [PMID: 37759550 PMCID: PMC10527650 DOI: 10.3390/cells12182329] [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: 08/12/2023] [Revised: 09/08/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
Biomolecular condensates are dynamic non-membrane-bound macromolecular high-order assemblies that participate in a growing list of cellular processes, such as transcription, the cell cycle, etc. Disturbed dynamics of biomolecular condensates are associated with many diseases, including cancer and neurodegeneration. Extensive efforts have been devoted to uncovering the molecular and biochemical grammar governing the dynamics of biomolecular condensates and establishing the critical roles of protein posttranslational modifications (PTMs) in this process. Here, we summarize the regulatory roles of ubiquitination (a major form of cellular PTM) in the dynamics of biomolecular condensates. We propose that these regulatory mechanisms can be harnessed to combat many diseases.
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Affiliation(s)
- Peigang Liang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen 361102, China; (P.L.); (J.Z.)
| | - Jiaqi Zhang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen 361102, China; (P.L.); (J.Z.)
| | - Bo Wang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen 361102, China; (P.L.); (J.Z.)
- Shenzhen Research Institute of Xiamen University, Shenzhen 518057, China
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9
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Guo J, Zhang W, Liang P, Zhang L, Peng L, Min Y, Pan X, Yang Z, Deng H. [Puerarin alleviates lipopolysaccharide-induced acute kidney injury in mice by modulating the SIRT1/NF-κB pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:1248-1253. [PMID: 37488808 PMCID: PMC10366522 DOI: 10.12122/j.issn.1673-4254.2023.07.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
OBJECTIVE To investigate the role of the SIRT1/NF-κB pathway in mediating the effect of puerarin against lipopolysaccharide (LPS)-induced acute kidney injury (AKI). METHODS Fifteen BALB/C mice were randomized into control group, LPS group and puerarin treatment group, and in the latter two groups, the mice were given an intraperitoneal injection of LPS (5 mg/kg), followed by daily injection of normal saline for 3 days or injection of puerarin (25 mg/kg) given 1 h later and then on a daily basis for 3 days. On day 5 after modeling, the kidney tissues were taken for histological observation and detection of cell apoptosis. The renal function indexes including urea nitrogen (BUN), serum creatinine (Scr) and kidney injury molecule 1 (KIM-1) and the levels of tumor necrosis factor (TNF-α) and interleukin 1β (IL-1β) were measured, and the expressions of SIRT1 and NF-κB-p65(acetyl K310) in the renal tissues were detected. RESULTS Intraperitoneal injection of LPS caused obvious glomerular capillary dilatation, hyperemia, renal interstitial edema, and renal tubular epithelial cell swelling and deformation in the mice. The mouse models of LPS-induced AKI also showed significantly increased renal tubular injury score and renal cell apoptosis (P < 0.01) with increased serum levels of BUN, Scr, KIM-1, TNF-α and IL-1β (P < 0.01), enhanced renal expressions of TNF-α, IL-1β and NF-κB p65(acetyl K310) (P < 0.01) and lowered renal expression of SIRT1 (P < 0.05). Treatment with puerarin effectively alleviated LPS-induced renal interstitial edema and renal tubular epithelial cell shedding, lowered renal tubular injury score (P < 0.01) and renal cell apoptosis rate (P < 0.01), and decreased serum levels of BUN, Scr, KIM, TNF-α and IL-1β (P < 0.01). Puerarin treatment significantly reduced TNF-α, IL-1β and NF-κB p65 (acetyl K310) expression in the renal tissue (P < 0.05) and increased SIRT1 expression by 17% (P < 0.05) in the mouse models. CONCLUSION Puerarin can effectively alleviate LPS-induced AKI in mice possibly by modulating the SIRT1/NF-κB signaling pathway.
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Affiliation(s)
- J Guo
- School of Basic Medical Sciences, Xiangnan University, Chenzhou 423000, China
| | - W Zhang
- Department of Medical Administration, Chenzhou First People's Hospital, Chenzhou 423000, China
- First Clinical College of Xiangnan University, Chenzhou 423000, China
| | - P Liang
- College of Pharmacy, Xiangnan University, Chenzhou 423000, China
| | - L Zhang
- College of Pharmacy, Xiangnan University, Chenzhou 423000, China
| | - L Peng
- School of Basic Medical Sciences, Xiangnan University, Chenzhou 423000, China
| | - Y Min
- School of Basic Medical Sciences, Xiangnan University, Chenzhou 423000, China
| | - X Pan
- School of Basic Medical Sciences, Xiangnan University, Chenzhou 423000, China
| | - Z Yang
- School of Basic Medical Sciences, Xiangnan University, Chenzhou 423000, China
| | - H Deng
- School of Basic Medical Sciences, Xiangnan University, Chenzhou 423000, China
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10
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Zhang E, Abdel-Mottaleb M, Liang P, Navarrete B, Yildirim YA, Campos MA, Smith IT, Wang P, Yildirim B, Yang L, Chen S, Smith I, Lur G, Nguyen T, Jin X, Noga BR, Ganzer P, Khizroev S. Corrigendum to "Magnetic-field-synchronized wireless modulation of neural activity by magnetoelectric nanoparticles" [Brain Stimulat. 15/6 (2022) 1451-1462]. Brain Stimul 2023; 16:981. [PMID: 37356230 DOI: 10.1016/j.brs.2023.06.002] [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: 06/27/2023] Open
Affiliation(s)
- E Zhang
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - M Abdel-Mottaleb
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - P Liang
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA; Cellular Nanomed, Inc, Irvine, CA, USA.
| | - B Navarrete
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - Y Akin Yildirim
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - M Alberteris Campos
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - I T Smith
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - P Wang
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - B Yildirim
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - L Yang
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - S Chen
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA; Cellular Nanomed, Inc, Irvine, CA, USA
| | - I Smith
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
| | - G Lur
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
| | - T Nguyen
- Stark Neuroscience Institute, Indiana University - Purdue University at Indianapolis, Indianapolis, IN, USA
| | - X Jin
- Stark Neuroscience Institute, Indiana University - Purdue University at Indianapolis, Indianapolis, IN, USA
| | - B R Noga
- The Miami Project to Cure Paralysis, University of Miami, FL, USA
| | - P Ganzer
- The Miami Project to Cure Paralysis, University of Miami, FL, USA
| | - S Khizroev
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA; Biochemistry and Molecular Biology, University of Miami, Miami, FL, USA
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11
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Pohl T, Sun YL, Obertelli A, Lee J, Gómez-Ramos M, Ogata K, Yoshida K, Cai BS, Yuan CX, Brown BA, Baba H, Beaumel D, Corsi A, Gao J, Gibelin J, Gillibert A, Hahn KI, Isobe T, Kim D, Kondo Y, Kobayashi T, Kubota Y, Li P, Liang P, Liu HN, Liu J, Lokotko T, Marqués FM, Matsuda Y, Motobayashi T, Nakamura T, Orr NA, Otsu H, Panin V, Park SY, Sakaguchi S, Sasano M, Sato H, Sakurai H, Shimizu Y, Stefanescu AI, Stuhl L, Suzuki D, Togano Y, Tudor D, Uesaka T, Wang H, Xu X, Yang ZH, Yoneda K, Zenihiro J. Multiple Mechanisms in Proton-Induced Nucleon Removal at ∼100 MeV/Nucleon. Phys Rev Lett 2023; 130:172501. [PMID: 37172241 DOI: 10.1103/physrevlett.130.172501] [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] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 03/17/2023] [Accepted: 03/29/2023] [Indexed: 05/14/2023]
Abstract
We report on the first proton-induced single proton- and neutron-removal reactions from the neutron-deficient ^{14}O nucleus with large Fermi-surface asymmetry S_{n}-S_{p}=18.6 MeV at ∼100 MeV/nucleon, a widely used energy regime for rare-isotope studies. The measured inclusive cross sections and parallel momentum distributions of the ^{13}N and ^{13}O residues are compared to the state-of-the-art reaction models, with nuclear structure inputs from many-body shell-model calculations. Our results provide the first quantitative contributions of multiple reaction mechanisms including the quasifree knockout, inelastic scattering, and nucleon transfer processes. It is shown that the inelastic scattering and nucleon transfer, usually neglected at such energy regime, contribute about 50% and 30% to the loosely bound proton and deeply bound neutron removal, respectively. These multiple reaction mechanisms should be considered in analyses of inclusive one-nucleon removal cross sections measured at intermediate energies for quantitative investigation of single-particle strengths and correlations in atomic nuclei.
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Affiliation(s)
- T Pohl
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - Y L Sun
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - A Obertelli
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J Lee
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - M Gómez-Ramos
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Apartado 1065, E-41080 Sevilla, Spain
| | - K Ogata
- Department of Physics, Kyushu University, Fukuoka 812-8581, Japan
- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki 567-0047, Japan
| | - K Yoshida
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - B S Cai
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai, 519082 Guangdong, People's Republic of China
| | - C X Yuan
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai, 519082 Guangdong, People's Republic of China
| | - B A Brown
- Department of Physics and Astronomy and the Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824-1321, USA
| | - H Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D Beaumel
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - A Corsi
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J Gao
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China
| | - J Gibelin
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
| | - A Gillibert
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - K I Hahn
- Department of Physics, Ewha Womans University, Seoul, South Korea
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, South Korea
| | - T Isobe
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D Kim
- Department of Physics, Ewha Womans University, Seoul, South Korea
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, South Korea
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - Y Kubota
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
| | - P Li
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - P Liang
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - H N Liu
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, People's Republic of China
| | - J Liu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - T Lokotko
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - F M Marqués
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
| | - Y Matsuda
- Cyclotron and Radioisotope Center, Tohoku University, Sendai 980-8578, Japan
- Department of Physics, Konan University, Kobe 658-8501, Japan
| | - T Motobayashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N A Orr
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
| | - H Otsu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - V Panin
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Y Park
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, Ewha Womans University, Seoul, South Korea
| | - S Sakaguchi
- Department of Physics, Kyushu University, Fukuoka 812-8581, Japan
| | - M Sasano
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Sakurai
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - Y Shimizu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - A I Stefanescu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, IFIN-HH, 077125 Bucureşti-Măgurele, Romania
- Doctoral School of Physics, University of Bucharest, 077125 Bucureşti-Măgurele, Romania
| | - L Stuhl
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, South Korea
| | - D Suzuki
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Y Togano
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
- Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 172-8501, Japan
| | - D Tudor
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, IFIN-HH, 077125 Bucureşti-Măgurele, Romania
- Doctoral School of Physics, University of Bucharest, 077125 Bucureşti-Măgurele, Romania
| | - T Uesaka
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Wang
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - X Xu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - Z H Yang
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - K Yoneda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - J Zenihiro
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Jiang J, Liang P, Li A, Xue Q, Yu H, You Z. Synthesis, Crystal Structures and Urease Inhibition of Zinc(II) and Copper(II) Complexes Derived from 2-Amino-N′-(1-(Pyridin-2-yl) Ethylidene)Benzohydrazide. J STRUCT CHEM+ 2023. [DOI: 10.1134/s0022476623030034] [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: 04/08/2023]
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13
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Zhang E, Abdel-Mottaleb M, Liang P, Navarrete B, Yildirim YA, Campos MA, Smith IT, Wang P, Yildirim B, Yang L, Chen S, Smith I, Lur G, Nguyen T, Jin X, Noga BR, Ganzer P, Khizroev S. Magnetic-field-synchronized wireless modulation of neural activity by magnetoelectric nanoparticles. Brain Stimul 2022; 15:1451-1462. [PMID: 36374738 DOI: 10.1016/j.brs.2022.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 10/15/2022] [Accepted: 10/19/2022] [Indexed: 12/30/2022] Open
Abstract
The in vitro study demonstrates wirelessly controlled modulation of neural activity using magnetoelectric nanoparticles (MENPs), synchronized to magnetic field application with a sub-25-msec temporal response. Herein, MENPs are sub-30-nm CoFe2O4@BaTiO3 core-shell nanostructures. MENPs were added to E18 rat hippocampal cell cultures (0.5 μg of MENPs per 100,000 neurons) tagged with fluorescent Ca2+ sensitive indicator cal520. MENPs were shown to wirelessly induce calcium transients which were synchronized with application of 1200-Oe bipolar 25-msec magnetic pulses at a rate of 20 pulses/sec. The observed calcium transients were similar, in shape and magnitude, to those generated through the control electric field stimulation with a 50-μA current, and they were inhibited by the sodium channel blocker tetrodotoxin. The observed MENP-based magnetic excitation of neural activity is in agreement with the non-linear M - H hysteresis loop of the MENPs, wherein the MENPs' coercivity value sets the threshold for the externally applied magnetic field.
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Affiliation(s)
- E Zhang
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - M Abdel-Mottaleb
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - P Liang
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA; Cellular Nanomed, Inc, Irvine, CA, USA.
| | - B Navarrete
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - Y Akin Yildirim
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - M Alberteris Campos
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - I T Smith
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - P Wang
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - B Yildirim
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - L Yang
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA
| | - S Chen
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA; Cellular Nanomed, Inc, Irvine, CA, USA
| | - I Smith
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
| | - G Lur
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
| | - T Nguyen
- Stark Neuroscience Institute, Indiana University - Purdue University at Indianapolis, Indianapolis, IN, USA
| | - X Jin
- Stark Neuroscience Institute, Indiana University - Purdue University at Indianapolis, Indianapolis, IN, USA
| | - B R Noga
- The Miami Project to Cure Paralysis, University of Miami, FL, USA
| | - P Ganzer
- The Miami Project to Cure Paralysis, University of Miami, FL, USA
| | - S Khizroev
- Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL, USA; Biochemistry and Molecular Biology, University of Miami, Miami, FL, USA.
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Li DG, Song SL, Chen DR, Liang P. Effects of Ce, Sm and Yb on cavitation erosion of NAB alloy in 3.5% NaCl solution. Ultrason Sonochem 2022; 88:106093. [PMID: 35863091 PMCID: PMC9304669 DOI: 10.1016/j.ultsonch.2022.106093] [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: 03/20/2022] [Revised: 06/14/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
The influences of Ce, Sm and Yb on cavitation erosion of NAB alloy in 3.5% NaCl solution are evaluated using mass loss, SEM, 3D morphology and Tafel plot, respectively. The results show that the addition of Ce or Sm or Yb enhances the mechanical property of NAB alloy, and the sizes of κⅠ and κⅡ phases within NAB alloy decrease with adding Ce or Sm or Yb, resulting in the prevention of the propagation of the cracks caused by cavitation erosion initially originated at the phase boundaries between α and κ phases, and finally the cavitation erosion damage significantly decreases with adding Ce or Sm or Yb. The corrosion of NAB alloy in 3.5% NaCl solution can promote the cavitation erosion of NAB alloy, while the corrosion resistance of NAB alloy increases with the addition of Ce or Sm or Yb, and then the cavitation erosion resistance is accordingly improved with the addition of rare earth element.
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Affiliation(s)
- D G Li
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
| | - S L Song
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - D R Chen
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - P Liang
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
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Zeng X, Liu Y, Hu J, Li J, Wang Y, Zhao D, Wu L, Xiao Z, Li Z, Xu J, Meerwein S, Xie Y, Liang P. AB0392 EFFICACY AND SAFETY OF UPADACITINIB IN A CHINESE SUBGROUP OF PATIENTS WITH RHEUMATOID ARTHRITIS AND INADEQUATE RESPONSE TO CONVENTIONAL SYNTHETIC DISEASE-MODIFYING ANTI-RHEUMATIC DRUGS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.1119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundUpadacitinib (UPA) was effective in global Phase 3 trials in rheumatoid arthritis (RA) patients (pts) with inadequate response (IR) to conventional synthetic disease-modifying antirheumatic drugs (csDMARDs).ObjectivesTo assess the efficacy and safety of UPA in csDMARD-IR pts with RA in Chinese subgroup from a Phase 3, randomized, double-blind, placebo (PBO)-controlled study (NCT02955212) 1.MethodsPts were randomized to 12 weeks of blinded treatment with UPA 15 mg once daily (QD) or PBO, in combination with csDMARDs. Primary and secondary endpoints were analyzed in a Chinese subgroup, including American College of Rheumatology criteria (ACR) responses, remission and low disease activity measures. Safety was analyzed for pts who received ≥1 dose of study drug.Results228 Chinese pts (67.5% of overall trial population) were randomized and took at least one dose of study drug. Baseline characteristics were generally balanced between UPA and PBO. 46% and 35.1% used methotrexate (MTX) alone as concomitant csDMARD in UPA and PBO group, respectively. 38.9% in UPA and 43.0% in PBO group used concomitant csDMARDs other than MTX and 15.0% and 21.9% respectively used a combination. At week 12, more Chinese pts receiving UPA achieved the primary endpoint of ACR20 compared with PBO (71.9% vs 31.6%, nominal p<0.001). UPA also showed greater improvements in all secondary endpoints vs PBO at Week 12 (Table 1), including ACR50 and ACR70, mean change in Disease Activity Score in 28 joints using C-reactive protein (DAS28-CRP), Health Assessment Questionnaire-Disability Index (HAQ-DI), Short-Form 36-item Health Survey-Physical Component Summary (SF-36 PCS), as well as proportion of pts achieving low disease activity based on DAS28-CRP ≤3.2 and Clinical Disease Activity Index (CDAI) ≤10, and clinical remission based on DAS28-CRP <2.6. Onset of response was rapid with more pts receiving UPA achieving ACR20 by Week 1 versus PBO (25.4% vs 5.3%, nominal p<0.001). Through Week 12 treatment-emergent adverse events (TEAEs) occurred in 57.9% of pts on UPA and 49.1% on PBO. The rate of pts with serious AEs (SAEs) was numerically higher with UPA than with PBO (6.1% vs 4.4%). TEAEs reported in ≥ 3% of subjects and with a higher rate on UPA vs. PBO were: upper respiratory tract infection, alanine aminotransferase increased, aspartate aminotransferase increased, hypertension, diarrhea, and leukopenia. Overall safety was consistent with the trial population1 and similar with the reported safety profile of the global clinical program2.Table 1.Summary of Efficacy Endpoint Results at Week 12 in Chinese SubgroupEndpoint aUPA 15mg (N=114)PBO (N=114)Primary endpointACR20, %71.9***31.6Secondary endpointsΔ DAS28-CRP-2.42***-0.75Δ HAQ-DI-0.55***-0.11Δ SF-36 PCS7.63 b***2.94 cDAS28-CRP ≤3.2, %46.5***9.6DAS28-CRP <2.6, %28.1***1.8CDAI ≤10, %33.3***7.0ACR50, %39.5***7.0ACR70, %16.7***2.6ACR20 at Week 1, %25.4***5.3***Nominal p<0.001 vs PBOaNon-responder imputation for binary endpoints; ANCOVA with multiple imputation for DAS28(CRP) and HAQ-DI; mixed model repeated measures for other continuous endpoints. Δ: mean change from baselinebN=106cN=104ConclusionUPA demonstrated clinical and functional improvement in Chinese csDMARD-IR RA pts. The safety of UPA was comparable with the overall study population and with the safety seen in the global Phase 3 program.References[1]Zeng X, Zhao D, Radominski SC, et al. Int J Rheum Dis. 2021;24:1530–1539.[2]Cohen SB, van Vollenhoven RF, Winthrop KL, et al. Ann Rheum Dis 2021;80:304–311.AcknowledgementsAbbVie funded this study; contributed to its design; participated in data collection, analysis, and interpretation of the data; and in the writing, review, and approval of the abstract. No honoraria or payments were made for authorship.Disclosure of InterestsXiaofeng Zeng: None declared, Yi Liu: None declared, Jiankang Hu: None declared, Jingyang Li: None declared, Yongfu Wang: None declared, Dongbao Zhao: None declared, Lijun Wu: None declared, Zhengyu Xiao: None declared, ZHIJUN LI: None declared, Jian Xu: None declared, Sebastian Meerwein Shareholder of: may own AbbVie stock or options, Employee of: AbbVie employee, Yunxia Xie Shareholder of: may own AbbVie stock or options, Employee of: AbbVie employee, Peiwen Liang Employee of: AbbVie
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Wang RQ, Ren W, Liang P, Liu M, Yang SJ. Study on the Mechanism of Zhilong Huoxue Tongyu Capsule in the Treatment of Ischemic Stroke Based on Network Pharmacology and Molecular Docking Technology. Indian J Pharm Sci 2022. [DOI: 10.36468/pharmaceutical-sciences.spl.514] [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: 11/22/2022] Open
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Chai YR, Gao JB, Lyu PJ, Liang P, Xing JJ, Liu J. [Comparative study of CT relative enhancement value and subjective visual evaluation for intestinal ischemia in patients with closed loop obstruction]. Zhonghua Yi Xue Za Zhi 2021; 101:3411-3416. [PMID: 34758545 DOI: 10.3760/cma.j.cn112137-20210328-00756] [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 compare and evaluate the diagnostic performance of visual evaluation and CT maximal density relative enhancement value in the diagnosis of intestinal ischemia complication in patients with closed loop obstruction and to explore the feasibility of CT maximal density relative enhancement value in quantifying the degrees of intestinal ischemia. Methods: The clinical and CT imaging data of 82 patients, 46 males and 36 females, aged from 19 to 78(52±18) years, with closed loop obstruction were retrospectively analyzed in the First Affiliated Hospital of Zhengzhou University from July 2017 to July 2019. All patients were classified into three groups: necrosis group (28 cases), ischemia group (22 cases), non-ischemia group(32 cases) using clinicopathologic results as reference standard. CT visual evaluation was performed by two experienced radiologists. The sensitivity, specificity, positive and negative predictive values and accuracy of the two observers were calculated respectively. The inter-observer agreement was analyzed by kappa analysis. Maximal density relative enhancement value was defined as the difference CT value of an ROI at dilated obstructed loops between contrast-enhanced and unenhanced CT images. The differences among groups were compared by one-way analysis of variance. Diagnostic performances were evaluated by receiver operating characteristic (ROC) curve analysis. Results: The sensitivity, specificity, positive and negative predictive values and accuracy of observer1 were 62.0%, 87.5%, 88.6%, 59.6%, 72.0%, and 58.0%, 93.8%, 93.5%, 58.8%, 72.0%for observer2, respectively. The kappa value of inter-observer agreement was 0.747. The unenhanced CT value of necrosis group, ischemia group and non-ischemia group was (53.7±9.7), (45.7±7.2) and (44.7±7.0) HU, enhanced CT value was (60.5±10.1), (65.0±11.6) and (87.0±15.8) HU, relative enhancement value was(6.8±8.4), (19.2±12.4) and(44.7±16.2)HU, respectively. All had a statistical difference among three groups (all P<0.05). The unenhanced CT value of necrosis group was higher than that of ischemia group and un-ischemia group (both P<0.05). The enhanced CT value of non-ischemia group was higher than that of ischemia group and necrosis (both P<0.05). The relative enhancement value all had a significant difference between groups (all P<0.05). Taking maximal density relative enhancement value below 19.5 HU as diagnosis threshold, the sensitivity, specificity and area under curve(AUC) were 96.9%, 74.0% and 0.947, respectively. Taking enhanced CT value below 66.5 HU as diagnosis threshold, the sensitivity, specificity and AUC were 93.8%, 60.0% and 0.903, respectively; the sensitivity was higher than that of objective visual evaluation. Conclusion: Maximal density relative enhancement value can quantize the bowel wall enhancement, and is a more reliable way in the diagnosis of intestinal ischemia than visual evaluation.
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Affiliation(s)
- Y R Chai
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J B Gao
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - P J Lyu
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - P Liang
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J J Xing
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J Liu
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Zhang C, Wei MH, Cao L, Liang P, Hu X. [Da Vinci robot-assisted pylorus and vagus nerve-preserving partial gastrectomy for gastric cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:814-818. [PMID: 34530563 DOI: 10.3760/cma.j.issn.441530-20210706-00268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To investigate the safety and feasibility of Da Vinci robot-assisted pylorus and vagus nerve-preserving partial gastrectomy for gastric cancer. Methods: In this study, descriptive case series method was used to retrospectively analyze the data of 3 patients with gastric cancer who underwent Da Vinci robot-assisted pylorus and vagus nerve-preserving partial gastrectomy in the First Affiliated Hospital of Dalian Medical University from December 2020 to February 2021. The linear layout was adopted for the setting of trocar, and the co-axial direction was the line connecting the umbilicus and splenic hilum. The inferior pyloric arteries and veins need to be preserved. The center was the bifurcation of the right gastroepiploic vessel and the inferior pyloric vessel. Dissection and exposure were performed from the upper, lower, right and left sides, and ventral and dorsal sides to complete the dissection of the inferior pyloric lymph nodes. The superior border of the pancreas was treated by the right diaphragmatic crus approach, the left retroperitoneal approach and the esophageal approach to determine the distribution of the posterior vagal trunk and its branches, and to determine the anatomical relationship with the left gastric artery. The left gastric artery was cut off while the celiac branch of vagus nerve and cardia branch of left gastric artery were preserved. Lymph node dissection was performed on the lateral side of nerve fibers around the blood vessels. Result: All the 3 patients successfully completed the robotic surgery without conversion to laparoscopy or laparotomy. The operation time was (340.0±26.4) (300-390) minutes, the intraoperative blood loss was (13.3±3.3) (10-20) ml, the number of dissected lymph nodes was 26.7±3.9 (19-32), the length of pylorus canal preserved was (3.3±0.3) (3-4) cm, the distal margin was (2.3±0.3) (2-3) cm, and the proximal margin was (3.0±0.6) (2-4) cm. No postoperative complications occurred in all the 3 patients. The first flatus time was 2-3 days after operation, and the postoperative hospital stay was 6-7 days. The operation cost of the 3 patients was (40±7) (33-53) thousand yuan. Conclusion: Da Vinci robot-assisted pylorus and vagus nerve-preserving partial gastrectomy is safe and feasible.
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Affiliation(s)
- C Zhang
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
| | - M H Wei
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
| | - L Cao
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
| | - P Liang
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
| | - X Hu
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
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Wang R, Liang P, Yu J, Han YJ, Gao JB. [Diagnostic efficacy of a combined diagnostic model based on extreme gradient boosting algorithm in differentiating the pathological grading of gastric neuroendocrine neoplasms]. Zhonghua Yi Xue Za Zhi 2021; 101:2717-2722. [PMID: 34510879 DOI: 10.3760/cma.j.cn112137-20201225-03462] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the diagnostic efficacy of combined diagnostic model based on extreme gradient boosting (XGBoost) algorithm to determine the pathological grading of gastric neuroendocrine neoplasms (NENs). Methods: A total of 81 gastric NENs patients in the First Affiliated Hospital of Zhengzhou University confirmed by definite pathological grading from August 2012 to December 2019 were enrolled. The data of clinical and CT findings were collected. The number of lesions, tumor location, shape, lymph node metastasis, thickness, longitude of tumor and CT values in arterial and venous phase were analyzed. ITK-SNAP software and Python 2.1.0 PyRadiomics software were used to perform the image preprocessing and radiomics features extraction from segmented images. XGBoost algorithm was used to build the CT findings model, radiomics model in arterial phase, radiomics model in venous phase and combined diagnostic model. The diagnostic efficacy of CT imaging model, radiomics model in arterial phase, radiomics model in venous phase and combined diagnostic model were evaluated by accuracy, mean squared error (MSE) and mean absolute error (MAE). Results: The subjects were 28.0 to 78.0 (58.6+10.7) years old, including 56 males (69.1%). The number of lesions, tumor location, shape, lymph node metastasis, thickness and longitude of tumor between G1/G2 and G3 patients showed statistic significances (all P values<0.05), while there were no differences in CT values in arterial and venous phase (both P values>0.05). Six most important features in the combined diagnostic model were A_logarithm_glcm_Imc1, P_squareroot_glcm_Maximum Probability, thickness, longitude, A_wavelet-HHL_glrlm_GrayLevelNonUniformity and P_wavelet-LLL_ngtdm_Contrast, respectively. The accuracy of CT findings model, radiomics model in arterial phase, radiomics model in venous phase and combined diagnostic model were 81.8%, 86.0%, 87.8% and 91.0%, respectively; with MSE were 539.41, 490.08, 429.99 and 371.92, respectively; and MAE were 16.72, 15.25, 14.23 and 12.33, respectively. The MAE value of the combined diagnostic model was lower than those of CT findings model and radiomics model in arterial phase (P<0.001 and 0.004, respectively), while no statistically difference was detected compared to radiomics model in venous phase (P=0.111). Conclusion: The combined diagnostic model based on XGBoost algorithm have a good diagnostic efficiency for the pathological grading of gastric NENs.
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Affiliation(s)
- R Wang
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University/Henan Key Laboratory of Image Diagnosis and Treatment for Digestive System Tumor, Zhengzhou 450052, China
| | - P Liang
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University/Henan Key Laboratory of Image Diagnosis and Treatment for Digestive System Tumor, Zhengzhou 450052, China
| | - J Yu
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University/Henan Key Laboratory of Image Diagnosis and Treatment for Digestive System Tumor, Zhengzhou 450052, China
| | - Y J Han
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University/Henan Key Laboratory of Image Diagnosis and Treatment for Digestive System Tumor, Zhengzhou 450052, China
| | - J B Gao
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University/Henan Key Laboratory of Image Diagnosis and Treatment for Digestive System Tumor, Zhengzhou 450052, China
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He Z, Meng Z, Liang P, Xing L, Zheng X, Wang G. P13.15 Pre-clinical trial of T601 oncolytic virus for high grade glima via intra-tumoral injection. Neuro Oncol 2021. [DOI: 10.1093/neuonc/noab180.122] [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: 11/12/2022] Open
Abstract
Abstract
BACKGROUND
An effective therapeutic method still hasn’t been devised for lethal high grade glioma. Thus, a method with high anti-tumoral efficiency, tumoral targeting, and acceptable side effect needs to be designed. Oncolytic virotherapy which can specifically lyse tumor cells via mass replication and deleting nucleotide metabolism related gene, like TK, required in viral replication and overexpressed in tumor cells, provides hope for patients. However, the virus only contained TK deletion is unable to show sufficient specificity of anti-tumoral response in tumor cells. Here, the adapted strain of vaccinia virus with high tumoral specificity due to TK and RR deletion and FUC1 insertion, named T601, is chosen in this project. In clinical application, intra-tumoral injection showed improved anti-tumoral efficiency and acceptable side effect. However, intra-tumoral viral injection in orthotropic glioma model is rare. In this project, various biosafety and antitumoral efficiency parameter would be tested for confirming the biosafety and reliability of intra-tumoral T601 viral injection for future clinical trials.
MATERIAL AND METHODS
For measuring the IC50 of T601, 10 different amounts of virus was tested in vitro via calculating cell viability with CCK-8(cell counting kit-8). For measuring the further antitumoral response of FCU1, different concentration of the 5-FC was added into the medium with IC50 viral amount. To ensure the biosafety of T601, MTD (maximum tolerance dose) was measured. Based on the MTD result, for evaluating the anti-tumoral efficiency, 106 pfu,105 pfu,104 pfu of virus was intra-tumoral injected in orthotopic GBM bearing mice. Tumor size was measured once a week through in vivo bioimaging system.
RESULTS
0.022 MOI, the IC50 of T601, showed high cytotoxicity of T601. Moreover, the significantly decreased cell viability under the combined treatment of 5-FC and 0.22MOI T601 showed intact anti-tumoral function. In MTD assay, except for 107 group, no significant weight loss was found. However, in 107 pfu group, mean body weight decreased around 10% and animal fatality happened on day 9. According to the MTD result, certain amount of virus was intra-tumorally injected. In all treatment group, the tumor size was significantly shrined. At the same time, the survival rate of mice under viral treatment was significantly extended.
CONCLUSION
In summary, T601 exhibited efficient anti-tumoral function and acceptable side effect. T601 treatment prolonged the survival period of GBM mice with acceptable neurotoxicity, demonstrating that T601 contains necessary criterial for intra-tumoral injection. Ultimately, this project provided basic reference information of dose for future clinical trial.
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Affiliation(s)
- Z He
- Tsinghua University, Beijing, China
| | - Z Meng
- Tsinghua University, Beijing, China
| | - P Liang
- Southeath Univeristy, Nanjing, China
| | - L Xing
- Tasly Tianjin BioPharmaceutical Co. Ltd., Tianjin, China
| | - X Zheng
- Tasly Tianjin BioPharmaceutical Co. Ltd., Tianjin, China
| | - G Wang
- Tsinghua University, Beijing, China
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Liu Q, Tang L, Liang P, Ye J, Hu X, Deng J. Combined Fracture of Carpal and Volar Divergent Dislocation of the Second to Fifth Carpometacarpal Joints. Acta Chir Orthop Traumatol Cech 2021; 88:386-388. [PMID: 34738900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The volar divergent dislocation of the second to fifth carpometacarpal joints and involving fracture of carpal is an extremely rare injury. We reported a case of 55-year-old man, victim of a motorbike, who was struck by a car, admitted at the emergency department unable to move his left hand with severe swelling. X-rays and CT scan showed a volar divergent dislocation of second to fifth carpometacarpal joints and involving fracture of carpal. Patient underwent closed reduction and plaster fixation right way, after one week, he received open reduction internal fixation with K-wire and plaster. Functional exercise was started progressively once K-wire and plaster were removed after six weeks. At six months follow-up, results were excellent and patient has regained all of his range of motion and hand activities. Key words: carpometacarpal joint, palmar, divergent, dislocation, hand, wrist.
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Affiliation(s)
- Q Liu
- Department of Orthopedics, Jiangxi Province Xing Guo People's Hospital, Xingguo, Jiangxi Province, China
- Department of Rehabilitation Medicine, Jiangxi Province Xing Guo People's Hospital, Xingguo, Jiangxi Province, China
| | - L Tang
- Department of Orthopedics, Jiangxi Province Xing Guo People's Hospital, Xingguo, Jiangxi Province, China
- Department of Rehabilitation Medicine, Jiangxi Province Xing Guo People's Hospital, Xingguo, Jiangxi Province, China
| | - P Liang
- Department of Orthopedics, Jiangxi Province Xing Guo People's Hospital, Xingguo, Jiangxi Province, China
- Department of Rehabilitation Medicine, Jiangxi Province Xing Guo People's Hospital, Xingguo, Jiangxi Province, China
| | - J Ye
- Department of Orthopedics, Jiangxi Province Xing Guo People's Hospital, Xingguo, Jiangxi Province, China
- Department of Rehabilitation Medicine, Jiangxi Province Xing Guo People's Hospital, Xingguo, Jiangxi Province, China
| | - X Hu
- Department of Orthopedics, Jiangxi Province Xing Guo People's Hospital, Xingguo, Jiangxi Province, China
- Department of Rehabilitation Medicine, Jiangxi Province Xing Guo People's Hospital, Xingguo, Jiangxi Province, China
| | - J Deng
- Department of Orthopedics, Jiangxi Province Xing Guo People's Hospital, Xingguo, Jiangxi Province, China
- Department of Rehabilitation Medicine, Jiangxi Province Xing Guo People's Hospital, Xingguo, Jiangxi Province, China
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Affiliation(s)
- P. Liang
- Capital Normal University Beijing, China
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Wu Y, Qing D, Lu H, Liu X, Jiang H, Zhao R, Zhu C, Pang Q, Peng L, Deng S, Gu J, Cheng J, Liang P, Lu Z, Chen C. Long-Term Results of Concurrent Chemoradiotherapy Combined With Anti-EGFR Monoclonal Antibody Prior to Surgery in Locally Advanced Cervical Cancer: A Single Institute Prospective Study. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2562] [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: 10/23/2022]
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Su T, Liang P, Shixiong L, Zhou Y, Huang Y, Cheng T. Stereotactic Body Radiation Therapy as A Radical or Salvage Treatment for Early-stage Hepatocellular Carcinoma: A Prospective Phase II Study. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1787] [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: 10/23/2022]
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Sun WF, Liang P. [Significance of celiac branch of the vagal nerve in function-preserving gastrectomy]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:935-938. [PMID: 33053987 DOI: 10.3760/cma.j.cn.441530-20200715-00425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Function-preserving gastrectomy, especially pylorus-preserving gastrectomy (PPG), can improve the quality of life and has been widely recognized. With the development of surgical techniques and equipment, nerve preservation has become a new requirement in the era of "precision medicine", but the preservation of celiac branch of the vagal nerve remains controversial in gastric cancer surgery. Current researches have shown that the preservation of celiac branch of the vagal nerve is safe and feasible in patients with early gastric cancer. Although controversial, nerve preservation may play a role in preventing gallstones, regulating gastric emptying, reducing dumping syndrome, alleviating chronic diarrhea, reducing gastroesophageal reflux, and inhibiting bile reflux. The significance of the celiac branch of the vagal nerve in gastric cancer surgery is worth further attention and exploration to promote the development of function-preserving gastrectomy and improve the quality of life of patients.
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Affiliation(s)
- W F Sun
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Dalian Medical University, Dalian, Liaoning 116011, China
| | - P Liang
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Dalian Medical University, Dalian, Liaoning 116011, China
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Wang R, Li J, Fang MJ, Dong D, Liang P, Gao JB. [The value of spectral CT-based radiomics in preoperative prediction of lymph node metastasis of advanced gastric cancer]. Zhonghua Yi Xue Za Zhi 2020; 100:1617-1622. [PMID: 32486595 DOI: 10.3760/cma.j.cn112137-20191113-02468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the spectral CT-based radiomics in predicting preoperatively the lymph node metastasis (LNM) of advanced gastric cancer. Methods: From January 2014 to October 2018, the spectral CT imaging and clinical data of 196 gastric adenocarcinoma patients confirmed by pathology in the First Affiliated Hospital of Zhengzhou University were retrospectively enrolled (training set and test set were randomly divided according to the ratio of 1∶1). These 196 patients include143 males and 53 females, aged from 28 to 81 years, with an average age of (59±11) years, and were divided into nodular metastasis group and non-metastasis group according to clinicopathological data. The spectral parameters were measured and calculated, and the CT-reported lymph node (LN) status from CT images were obtained. 273 radiomics features were extracted from the dual-phases CT images in different energy level (40, 65 and 100 keV) to build the radiomics signature respectively. Univariate analysis was used to compare the differences of spectral parameters and radiomics features between two groups, and then the significant indicators were put into multivariable logistic regression analysis to construct combined prediction model and radiomics nomogram. In addition, the performance of prediction model in training and test set were measured using the receiver operating characteristics (ROC) curves and were compared using DeLong test. Results: Both in training set and in test set, the iodine concentration (IC) of tumor in venous phase (VP) in nodular metastasis group were higher than that in non-metastasis group [training set: 22.98 (100 mg/L)>20.31 (100 mg/L), P=0.086; test set: 25.14 (100 mg/L)>21.07 (100 mg/L), P=0.009]. The CT-reported LN status showed significant differences between the two group (P<0.001, P=0.001). The radiomics signatures 40 keV-arterial phase, 65 keV-venous phase, IC-VP of tumor and CT-reported LN status were independent indicators for prediction of preoperative LNM of advanced gastric cancer in combined prediction model (P<0.05). The radiomics nomogram predicated LNM with an area under curve (AUC) and 95% confidence interval (CI) of 0.822 (0.739-0.906) in training set and 0.819(0.732-0.906) in test set, and there were no significant differences in AUC between two sets (P>0.05). Conclusions: The spectral CT-based radiomics can be used to quantitatively predict the LNM of advanced gastric cancer preoperatively.
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Affiliation(s)
- R Wang
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J Li
- Department of Radiology, Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou 450008, China
| | - M J Fang
- Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
| | - D Dong
- Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
| | - P Liang
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J B Gao
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Carrier N, Roux S, Masetto A, Debrum Fernandes AJ, Liang P, Maoui M, Boire G. FRI0031 OBSERVATIONS ON BIOMARKERS IN VERY EARLY RHEUMATOID ARTHRITIS CONSECUTIVELY RECRUITED OVER 20 YEARS, FROM BASELINE PRESENTATION TO FIVE-YEAR OUTCOMES. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Since July 1998, the Early Undifferentiated PolyArthritis (EUPA) cohort recruited consecutive adults with recent-onset immune-mediated polyarthritis1,2. Patients were treated aiming at 0 swollen joint.Objectives:To analyze the impact of biomarkers over 20 years on baseline variables, treatments, comorbidities and outcomes over the first 5 years of follow up.Methods:Variables and Outcomes were collected over 5 years in consecutive patients fulfilling RA criteria, grouped according to date of inclusion (Period 1: 1998-2004; Period 2: 2005-2010; Period 3: 2011-2018). Comparisons of baseline characteristics, treatment, and outcomes over 5 years between the 3 Periods were previously presented (ACR 2018 and 2019). Erosive damage was scored according to Sharp/van der Heijde; erosive status was defined as ≥5 Erosion units. We now present observed associations between the presence of baseline prognostic biomarkers (anti-CCP2 (ACPA), RF, anti-Sa, and erosive status) with concomitant and subsequent disease activity levels, radiographic scores, comorbidities and impact of treatment. False discovery rate correction was used to adjust p-values for multiple comparisons.Results:753 patients were included: 247, 263 and 243 in Periods 1, 2 and 3, respectively. Variables at baseline. No biomarkers, including erosive status, were associated with demographics or disease activity. Erosive disease was more prevalent in ACPA+ (19.9% vs 13.9%, p=0.0417). Current smoking decreased by period (20.6, 17.2, 8.6%; p=0.02) in ACPA negatives only, remaining stable among ACPA+ (25.3, 20.9, 18.8%, NS). All comorbidities were significantly more present in ACPA negatives vs positives (RR between 1.55 and 1.99). Prevalence of cardiovascular (CV; 44.8, 55.0, 60.0%; p=0.036) and cancer (4.1, 7.1, 13.1%; p=0.02) comorbidities increased over time in ACPA negatives and remained stable in ACPA+ (CV: 33.0, 30.8, 40.7, NS; cancer: 3.0, 4.4, 6.2, NS). RF positivity decreased by period (47.8, 36.9, 36.7%, p=0.03), but ACPA+ remained stable (40.8, 35, 35.4% NS).Outcomes over 5 years of follow up.There was no link between the presence of any biomarker and subsequent disease activity scores. Positive ACPA, RF and anti-Sa at baseline predicted development of more erosive status (RR = 1.50; 1.37 and 1.52, all p<0.001). 68% reached DAS28 remission overall (70.3% in ACPA negatives, 65.2% in ACPA+). Independent of ACPA status, remission rates increased between Periods 1 vs 2 (RR = 1.14, p=0.04) and 1 vs 3 (RR=1.13, p=0.055), but not between 2 vs 3. CV comorbidities among ACPA+ increased significantly more over time vs ACPA negatives (+8.9% vs +4.1%; RR = 1.18, p=0.03). Erosion scores increased significantly more in ACPA+ treated with DMARDs only vs receiving a biologic (ΔSharp: 3.98 vs 3.11, p= 0.026; ΔErosions: 2.58 vs 1.83, p= 0.02). By period, erosive status decreased significantly (Periods 2 vs 1: RR= 0.65, p=0.002; 3 vs 1: RR=0.42, p=0.002; 3 vs 2: RR=0.64, p=0.007), both in ACPA+ and negatives.Conclusion:In this cohort of recent onset RA recruited over 20 years, we observed a constant drift towards RF-negative arthritis at baseline with decreasing smoking rates and increasing comorbidities in seronegative patients. Positive antibodies were associated more cardiovascular comorbidities accrual. Autoantibody positive (especially ACPA+) patients developed more erosive disease and had better erosion outcomes with biologic treatments. Irrespective of the presence or absence of biomarkers, marked improvements in control of disease activity and in remission rates occured over each period.References:[1]Boire G, et al.Arthritis Res Ther2005;7:R592-R603;[2]Carrier N, et al. Arthritis Res Ther2016;18:37Disclosure of Interests:Nathalie Carrier: None declared, Sophie Roux: None declared, Ariel Masetto: None declared, Artur J. deBrum Fernandes: None declared, Patrick Liang: None declared, Meryem Maoui Employee of: Bristol Myers Squibb Canada, Gilles Boire Grant/research support from: Merck Canada (Registry of biologices, Improvement of comorbidity surveillance)Amgen Canada (CATCH, clinical nurse)Abbvie (CATCH, clinical nurse)Pfizer (CATCH, Registry of biologics, Clinical nurse)Hoffman-LaRoche (CATCH)UCB Canada (CATCH, Clinical nurse)BMS (CATCH, Clinical nurse, Observational Study Protocol IM101664. SEROPOSITIVITY IN A LARGE CANADIAN OBSERVATIONAL COHORT)Janssen (CATCH)Celgene (Clinical nurse)Eli Lilly (Registry of biologics, Clinical nurse), Consultant of: Eli Lilly, Janssen, Novartis, Pfizer, Speakers bureau: Merck, BMS, Pfizer
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Schermerhorn M, Liang P, Eldrup-Jorgensen J, Cronenwett J, Nolan B, Kashyap V. Association of Transcarotid Artery Revascularization vs Transfemoral Carotid Artery Stenting With Stroke or Death Among Patients With Carotid Artery Stenosis. J Vasc Surg 2020. [DOI: 10.1016/j.jvs.2020.02.006] [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: 10/24/2022]
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Giordano BV, Gasparotto A, Liang P, Nelder MP, Russell C, Hunter FF. Discovery of an Aedes (Stegomyia) albopictus population and first records of Aedes (Stegomyia) aegypti in Canada. Med Vet Entomol 2020; 34:10-16. [PMID: 31566765 DOI: 10.1111/mve.12408] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [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: 05/22/2019] [Revised: 08/15/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
A population of Aedes (Stegomyia) albopictus (Skuse) (Diptera: Culicidae), a vector of chikungunya, dengue, yellow fever, and Zika and West Nile viruses, has been detected in Windsor, Ontario, Canada from 2016 onwards. Here, we describe its seasonal distribution, as well as the various aquatic habitats from which this species was collected and its larval co-habitation. We collected immatures from tires, treeholes, extruded polystyrene foam containers, discarded plastic cups, old recycling bins and oviposition traps. Aedes albopictus larvae were collected with Aedes japonicus (Theobald), Anopheles punctipennis (Say), Culex pipiens Linnaeus, Ochlerotatus hendersoni (Cockerell), Ochlerotatus triseriatus (Say) and Orthopodomyia signifera (Coquillett). Adult female and male specimens were collected from Biogents sentinel traps (Biogents AG, Regensburg, Germany), as well as Centers for Disease Control and Prevention miniature light traps (CDC, Atlanta, GA, U.S.A.), and also as they alighted on the investigators. Peak adult collections occurred in September during epidemiological week 37. We also collected Aedes (Stegomyia) aegypti (Linnaeus), a new record for Canada, in 2016 and from two new collection sites in 2017. The 2017 collections were 3.5 km north and 19.4 km south of the index site. The present study adds to the increasing number of studies reporting range expansions of these mosquito species.
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Affiliation(s)
- B V Giordano
- Centre for Vector-Borne Diseases, Brock University, St Catharines, Canada
- Centre for Biotechnology, Brock University, St Catharines, Canada
- Entomogen Inc., St Catharines, Canada
| | | | - P Liang
- Centre for Vector-Borne Diseases, Brock University, St Catharines, Canada
- Centre for Biotechnology, Brock University, St Catharines, Canada
- Department of Biological Sciences, Brock University, St Catharines, Canada
| | - M P Nelder
- Enteric, Zoonotic and Vector-Borne Diseases Unit, Public Health Ontario, Toronto, Canada
| | - C Russell
- Enteric, Zoonotic and Vector-Borne Diseases Unit, Public Health Ontario, Toronto, Canada
| | - F F Hunter
- Centre for Vector-Borne Diseases, Brock University, St Catharines, Canada
- Centre for Biotechnology, Brock University, St Catharines, Canada
- Entomogen Inc., St Catharines, Canada
- Department of Biological Sciences, Brock University, St Catharines, Canada
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Liang P, Xing X, Wu J, Song J, Liu Q. PM2.5 promotes apoptosis of human epidermal melanocytes through promoting oxidative damage and autophagy. Gen Physiol Biophys 2020; 39:569-577. [DOI: 10.4149/gpb_2020018] [Citation(s) in RCA: 3] [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] [Received: 02/12/2020] [Accepted: 05/19/2020] [Indexed: 11/08/2022]
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Ding QG, Huang LN, Li Q, Dong Q, Qian Z, Yin XW, Liang P. [A functional magnetic resonance imaging study of exercise addiction]. Zhonghua Yi Xue Za Zhi 2019; 99:2773-2776. [PMID: 31550801 DOI: 10.3760/cma.j.issn.0376-2491.2019.35.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Objective: To investigate the brain activities of exercise addiction (EA) group people with the task-functional magnetic resonance image (task-fMRI). Methods: A total of 29 exercise addicts (addiction group, average age 46±4 years) and 26 non-exercise addicts (control group, average age 46±6 years) matched by sex, age, average education level and sports dependence degree were selected by using exercise addiction index (EAI) through questionnaires to members of Jiangsu Local Fitness and Long-distance Running Association between January 2018 and June 2018. The participants were scanned with fMRI while watching sports pictures or non-sports pictures. The brain responses of the two groups under two stimulation tasks were analyzed and compared. Results: Compared with the control group, while watching sports pictures, the right fusiform gyrus (MNI:x=30, y=-87, z=0), left posterior central gyrus (MNI:x=-51, y=-21, z=54), left medial superior frontal gyrus (MNI:x=-9, y=54, z=30), and right middle occipital gyrus (MNI:x=42, y=-72, z=36) were significantly inhibited in the addiction group (t-test, all P<0.05). When watching non-sports pictures, the addictive group showed the left superior frontal gyrus (MNI:x=-12, y=54, z=30), left middle frontal gyrus (MNI:x=-30, y=18, z=45), right inferior frontal gyrus (MNI:x=42, y=33, z=-12), right occipital gyrus (MNI:x=42, y=-72, z=36), and they were more significantly inhibited than the control group (t-test, all P<0.05). Conclusion: Compared to the control group, the EA group shows significant brain inhibition with visual stimulation, particularly with non-sports pictures.
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Affiliation(s)
- Q G Ding
- Department of Radiology, Changshu No. 2 People's Hospital, Medical College of Yangzhou University, Changshu 215500, China
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Liang P, Zhuoran W, Weiping G, Guihuai W. P12.01 Local implantation of thermoresponsive interferon alpha-polypeptide conjugate combined with temozolomide for post-surgical glioblastoma chemoimmunotherapy. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.212] [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: 11/13/2022] Open
Abstract
Abstract
BACKGROUND
Glioblastoma(GBM) is associated with gloomy prognosis despite maximal safe resection and following chemoradiation. In recent years, significant progress has been made in cancer immunotherapy except for GBM, which is largerly due to its local immunosuppressive microenvironment. Some research has demonstrated that local immunotherapy may be more efficient than systematic administrators. IFNα has been investigated as antitumor agent for some cancers, including glioma. Nevertheless, the short circulating half-life greatly limits its clinical application. Hence, a thermoresponsive IFNα-elastin-like polypeptide (IFNα-ELP) was genetically engineered for the earliest local intervention post-surgery.
MATERIAL AND METHODS
Firstly, IFNα-ELP(V) was constructed, expressed and purified, then, its physicochemical characterization was verified. The tumor was resected 10 days after U87MG-mCherry-luc cells orthotopic implantation, and IFNα-ELP(V) was injected into the resection cavity. Two days later, temozolomide(TMZ) was intraperitoneally injected. Using in vivo imaging technique, we could monitor the trends in tumor size. The survival time of mice was counted. Biosafety was evaluated by peripheral blood biochemistry analysis and pathology of the organs.
RESULTS
In this study, the bioconjugate not only in situ deposited in the resection cavity because of the thermoresponsive characteristic, but also showed zero-order release kinetics from the depot and dramatically improved pharmacokinetics and biodistribution of IFNα. Consequently, it showed the inhibition of tumor relapse in GBM orthotopic resection mice models. When followed by TMZ intraperitoneal injection, IFNα-ELP(V) could significantly prevent the tumor recurrence than itself or TMZ alone. Biosafety results indicated that the systemic toxicity of IFNα-ELP(V) in mice can be reduced to safe levels.
CONCLUSION
The results reveal that local implantation of thermoresponsive IFNα-ELP(V) combined with TMZ exhibits the synergy of post-surgical GBM chemoimmunotherapy.
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Affiliation(s)
- P Liang
- Department of Neurosurgery, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
- Beijing Tsinghua Changgung Hospital, Beijing, China
| | - W Zhuoran
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China
| | - G Weiping
- Biomedical Engineering Department, Peking University, Beijing, China
| | - W Guihuai
- Beijing Tsinghua Changgung Hospital, Beijing, China
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Chai Y, Liu W, Hu L, Zhang Y, Liang P. P04.13 Prognostic role of single stranded DNA binding protein 2 in IDH wild type lower grade glioma. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.108] [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: 11/12/2022] Open
Abstract
Abstract
Comprehensive and integrative characterizations of genomic analysis including somatic alterations and molecular subtypes of glioma have been established. However, diffuse gliomas (World Health Organization grades II and III, hereafter referred to collectively as lower-grade gliomas,LGG) consist of highly variable clinical behaviors, leading to emerging studies to identify prognostic factors. Through comparative analyses of 516 cases of primary LGG patients from The Cancer Genome Atlas (TCGA) dataset, we reported that the expression level and methylation level of SSBP2 (encoding single stranded DNA-binding protein 2) gene vary among LGG patients and SSBP2 expression or gene body methylation can be served as prognostic biomarkers for LGG survival. Cox regression results confirmed that SSBP2 as an independent predictor of survival in LGG, with a cox coefficient of 0.534 indicating a worse prognosis. Furthermore, lower-grade glioma was statistically ranked first among 21 different cancer types according to the FDR correction. We further investigated the combination of SSBP2 with other known genetic prognostic factors(IDH mutation and 1p19q co-deletion) of LGG. By matching gene expression profile of LGG patients, IDH-mutant gliomas had decreased expression of SSBP2 compared with IDH-wildtype gliomas and 1p19q intact gliomas had increased expression of SSBP2 compared with 1p19q codeletion gliomas. Moreover, we found that the combination of IDH or 1p19q status with SSBP2 identified LGG subsets with significantly diverse survival effects. Patients with low SSBP2 expression had significantly better 5-, 10-, and 15-year OS in IDH wild type, but not in the cohorts of IDH mutant. Our findings offer an explanation for the specificity of SSBP2 effect on survival rate in IDH wild type LGG patients.
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Affiliation(s)
- Y Chai
- School of Clinical Medicine, Tsinghua University, Department of Neurosurgery, Beijing, China
| | - W Liu
- School of Clinical Medicine, Tsinghua University, Department of Neurosurgery, Beijing, China
| | - L Hu
- School of Clinical Medicine, Tsinghua University, Department of Neurosurgery, Beijing, China
| | - Y Zhang
- School of Clinical Medicine, Tsinghua University, Department of Neurosurgery, Beijing, China
| | - P Liang
- School of Clinical Medicine, Tsinghua University, Department of Neurosurgery, Beijing, China
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Wang B, Tan HN, Liang P, Hou P, Cui L, Gao JB. [Relationship between one-stop CT spectral perfusion imaging parameters and expression of lymphatic microvessel density and vascular endothelial growth factor-C in axillary lymph nodes of rabbit VX2 breast cancer]. Zhonghua Yi Xue Za Zhi 2019; 99:1024-1027. [PMID: 30955317 DOI: 10.3760/cma.j.issn.0376-2491.2019.13.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the correlation between quantitative parameters of one-stop spectral perfusion computed tomography imaging and the expression level of vascular endothelial growth factor-C(VEGF-C) and MLVD in metastatic lymph nodes of rabbit VX2 breast cancer. Methods: Thirty New Zealand purebred female rabbits were used to establish the lymph node metastasis model of rabbit VX2 breast cancer, one-stop spectral and perfusion CT imaging protocol was performed.The axillary lymph nodes were selected for corresponding image markers. The observed morphology of conventional HE staining and the EnVision method were used to quantitatively analyze VEGF-C expression and calculate MLVD.Pearson linear correlation was used to analyze the perfusion parameters of metastatic lymph node energy spectrum and the correlation of MLVD and VEGF-C expression. Results: Twenty-four experimental rabbits were successfully modeled and performed a one-stop CT scan on the 28th day. A total of 39 metastatic lymph nodes were included. The VEGF-C of metastatic lymph node was 20.0%±2.8%,and the MLVD was 12.5±3.5. There was a positive correlation between BF, AP(λHU), IC(VP), NIC(VP), VP(λHU) of metastatic lymph node and VEGF-C and MLVD (P<0.05). There was a positive correlation between lymph node IC(AP) and MLVD (P=0.027) and no correlation with VEGF-C expression (P=0.386).There was no correlation between BV, NIC(A)P and VEGF-C, MLVD(P>0.05). The correlation between VP(λHU) and MLVD was higher (r=0.448, P=0.001). Conclusions: One-stop CT spectral perfusion imaging quantitative parameters and pathological indicators have a good correlation, and it can reflect lymphatic vessel metastasis in lymph nodes.
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Affiliation(s)
- B Wang
- Department of Radiology, the First Affiliated Hosptital of Zhengzhou University, Zhengzhou 450052, China
| | - H N Tan
- Department of Radiology, the People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - P Liang
- Department of Radiology, the First Affiliated Hosptital of Zhengzhou University, Zhengzhou 450052, China
| | - P Hou
- Department of Radiology, the First Affiliated Hosptital of Zhengzhou University, Zhengzhou 450052, China
| | - L Cui
- Department of Pathology, the First Affiliated Hosptital of Zhengzhou University, Zhengzhou 450052, China
| | - J B Gao
- Department of Radiology, the First Affiliated Hosptital of Zhengzhou University, Zhengzhou 450052, China
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Su L, Liang P, Lü PJ, Wang MY, Gao JB. [Application of a multi-material artifact reduction algorithm in a wide-detector CT in the evaluation of the portal venous angiography of postoperative TIPS and embolization]. Zhonghua Yi Xue Za Zhi 2019; 99:44-48. [PMID: 30641664 DOI: 10.3760/cma.j.issn.0376-2491.2019.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Objective: To assess the effect of monochromatic images and metal artifact reduction (MAR) on the image quality of spectral CT portal venous angiography in patients with operation of after the performing transjugular intrahepatic portosystemic stent shunt(TIPS) and embolization. Methods: From December 2017 to April 2018, the examination data of 28 patients with portal hypertension due to cirrhosis who underwent portal vein angiography 1 month after TIPS and embolization were prospectively collected. After spectral CT scanning in revolution CT, the monochromatic energy levels(60 keV, 120 keV), 60 keV + 120 keV, 120kV-like + 120 keV fused images combined with MAR algorithm were reconstructed. Quantitative parameters such as image artifact index (AI) and qualitative visual evaluation scores were recorded and compared. Results: The 120 keV monochromatic images showed the lowest AI value(30.8±8.5, 18.2±4.3) and highest metal artifacts reduction effect. The 60 keV monochromatic images showed the highest AI value (57.3±15.7, 32.1±7.9) and the lowest metal artifacts reduction effect. The AI value of 60 keV + 120 keV fused images was lower than that of 60 keV images(26.2%, 24.7%). The difference of AI value between each group was statistically significant(all P<0.05). The interobserver agreement in the subjective image scores was moderate with kappa value of 0.824. The overall image quality score of 60 keV + 120 keV fused image and the noise score of 120 kV-like+120 keV were higher than the remaining groups. The differences of the subjective scores among each group were statistically significant(all P<0.05). Conclusion: The spectral CT with MAR algorithm can effectively improve the image quality of portal vein angiography after the TIPS and embolization therapy and the 60 keV + 120 keV fused images can eliminate artifacts and ensure a clear display of blood vessels.
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Affiliation(s)
- L Su
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Affiliation(s)
- K. Chen
- Institute of Microbiology, Academic Sinica, Beijing, China
| | - P. Liang
- Institute of Microbiology, Academic Sinica, Beijing, China
| | - M. Yu
- Department of Biology, The Chinese University of Hong Kong
| | - S. T. Chang
- Department of Biology, The Chinese University of Hong Kong
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Liu F, Zhang J, Zhang HK, Zhao YQ, Liang P, Zuo YX. [Thoracic paravertebral block in the PACU for immediate postoperative pain relief after video-assisted thoracoscopic surgery]. Zhonghua Yi Xue Za Zhi 2018; 97:119-122. [PMID: 28088956 DOI: 10.3760/cma.j.issn.0376-2491.2017.02.008] [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] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective: To investigate the effectiveness and safety of the thoracic paravertebral block(TPVB) in the post postanesthesia care unit(PACU) for patients suffered moderate to severe pain after Video-Assisted Thoracoscopic Surgery(VATS). Methods: 78 atients who complained moderate to severe pain on arrival to PACU after VATS were randomly assigned into two groups: thoracic paravertebral block treatment group(P group) and sufentanil treatment group(S group). The VAS Pain score at rest and movement, heart rate, blood pressure, and pulse oximetry 1 hour after treatment and duration of patients staying in the PACU after treatment were recorded. VAS Pain score at rest and on coughing at 8, 24 and 48 hours after treatment were closely monitored. Sufentanil comsumption, patient satisfaction and related complications were also recorded. Results: A successful TPVB was achieved in all patients in P group without puncture related complications. The VAS pain scores at rest and on coughing 1 hour, 8 hours, 24 hours and 48 hours after treatment in P group were significantly lower than the patients in S group. Systolic blood pressure 1 hour after treatment in P group was also lower than the patients in S group(118mmHg±14mmHg vs 128 mmHg±14 mmHg, P=0.021). SPO2 1 hour after treatment in P group was much higher than the patients in S group(95%±3% vs 92%±4%, P=0.015). The duration of patients staying in the PACU after treatment in both groups were similar. Sufentanil comsumption, rate of vomiting and nausea was significantly less and satisfaction was better in P group than thoses in S group. Conclusion: In the postanesthesia care unit, TPVB could provide effective and safe analgesia therapy for patients suffered from moderate to severe pain after VATS.
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Affiliation(s)
- F Liu
- West China Hospital of Sichuan University, Chengdu 610041, China
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Guduru R, Liang P, Yousef M, Horstmyer J, Khizroev S. Mapping the Brain's electric fields with Magnetoelectric nanoparticles. Bioelectron Med 2018; 4:10. [PMID: 32232086 PMCID: PMC7098259 DOI: 10.1186/s42234-018-0012-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 03/16/2018] [Accepted: 07/20/2018] [Indexed: 11/10/2022] Open
Abstract
Background Neurodegenerative diseases are devastating diagnoses. Examining local electric fields in response to neural activity in real time could shed light on understanding the origins of these diseases. To date, there has not been found a way to directly map these fields without interfering with the electric circuitry of the brain. This theoretical study is focused on a nanotechnology concept to overcome the challenge of brain electric field mapping in real time. The paper shows that coupling the magnetoelectric effect of multiferroic nanoparticles, known as magnetoelectric nanoparticles (MENs), with the ultra-fast and high-sensitivity imaging capability of the recently emerged magnetic particle imaging (MPI) can enable wirelessly conducted electric-field mapping with specifications to meet the requirements for monitoring neural activity in real time. Methods The MPI signal is numerically simulated on a realistic human brain template obtained from BrainWeb, while brain segmentation was performed with BrainSuite software. The finite element mesh is generated with Computer Geometry Algorithm Library. The effect of MENs is modeled through local point magnetization changes according to the magnetoelectric effect. Results It is shown that, unlike traditional magnetic nanoparticles, MENs, when coupled with MPI, provide information containing electric field's spatial and temporal patterns due to local neural activity with signal sensitivities adequate for detection of minute changes at the sub-cellular level corresponding to early stage disease processes. Conclusions Like no other nanoparticles known to date, MENs coupled with MPI can be used for mapping electric field activity of the brain at the sub-neuronal level in real time. The potential applications span from prevention and treatment of neurodegenerative diseases to paving the way to fundamental understanding and reverse engineering the brain.
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Affiliation(s)
- R Guduru
- 1Center for Personalized Nanomedicine, Florida International University, 11200 SW 8th ST, Miami, Florida 33199 USA.,2Department of Electrical and Computer Engineering, Florida International University, Miami, Florida 33174 USA
| | - P Liang
- 3Department of Electrical and Computer Engineering, University of California, Riverside, California, 92521 USA
| | - M Yousef
- Brain Center, Miami, Florida 33124 USA
| | | | - S Khizroev
- 1Center for Personalized Nanomedicine, Florida International University, 11200 SW 8th ST, Miami, Florida 33199 USA.,2Department of Electrical and Computer Engineering, Florida International University, Miami, Florida 33174 USA.,Brain Center, Miami, Florida 33124 USA
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Li D, Yu J, Han Z, Cheng Z, Liu F, Dou J, Liang P. Risk factors of haemoglobinuria after microwave ablation of liver tumours. Clin Radiol 2018; 73:982.e9-982.e15. [PMID: 30029835 DOI: 10.1016/j.crad.2018.06.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 06/08/2018] [Indexed: 02/07/2023]
Abstract
AIM To explore the risk factors predicting haemoglobinuria after ultrasound-guided percutaneous microwave ablation (MWA) of liver tumours and discuss the treatments and outcomes. MATERIALS AND METHODS The present study comprised 2,829 patients admitted for liver tumours treated with MWA from Jan 2011 to April 2017. Ethics committee approval was waived and informed consent for treatment procedures were obtained from the patients. Haemoglobinuria after MWA was found in 149 patients. The influence of 19 risk factors was assessed. Binary logistic regression and receiver operating characteristic (ROC) curve analysis were used for statistical analysis. The treatments and outcomes of patients with haemoglobinuria were summarised. RESULTS By univariate analysis, histopathology, liver cirrhosis, MWA volume, MWA energy, and MWA duration were significant risk factors. By multivariate analysis and ROC curve, MWA energy, duration, and volume were identified as predictors of haemoglobinuria after MWA. Drug treatments including kidney protection, adequate hydration, alkalisation of urine, and diuresis were administrated to the patients with haemoglobinuria. One patient progressed to acute kidney injury (AKI) while others had good clinical outcomes. CONCLUSION Haemoglobinuria is a controllable side effect after MWA of liver tumours, which is related to high MWA energy, long MWA duration, and great MWA volume. It usually caused few side effects on renal function with correct treatment.
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Affiliation(s)
- D Li
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, 100853, China; Department of Hepatobiliary Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, 050000, China
| | - J Yu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, 100853, China
| | - Z Han
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, 100853, China
| | - Z Cheng
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, 100853, China
| | - F Liu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, 100853, China
| | - J Dou
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, 100853, China
| | - P Liang
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, 100853, China.
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Liu B, Long J, Wang W, Huang G, Jiang C, Zhang X, Liu M, Liang P, Yu J, Xie X, Kuang M. Treatment of hepatocellular carcinoma in the caudate lobe: US-guided percutaneous radiofrequency ablation combined with ethanol ablation. Clin Radiol 2018; 73:647-656. [PMID: 29627066 DOI: 10.1016/j.crad.2018.02.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 02/23/2018] [Indexed: 12/18/2022]
Abstract
AIM To evaluate the technical feasibility and treatment results of ultrasound (US)-guided percutaneous radiofrequency ablation (RFA) combined with ethanol ablation (EA) for hepatocellular carcinoma (HCC) in the caudate lobe. MATERIALS AND METHODS The institutional review board approved this retrospective study and the requirement for informed consent was waived. From October 2009 to June 2016, there were 49 patients with HCC in the caudate lobe underwent ablation. Among them, 14 patients (12 men and two women, mean age: 49.9±14.9 years) with 16 caudate lobe HCCs (mean size: 3±1.1 cm) who underwent US-guided RFA-EA were identified. These patients were compared with patients who underwent RFA alone (n=17) and EA alone (n=18). RESULTS HCCs in the RFA-EA group were larger than those in the EA-alone group (3±1.1 versus 2.1±0.7 cm, p=0.028). In the RFA-EA group, all the patients achieved treatment success (14/14) and entered follow-up. After a follow-up period of 17.1±10.6 months (range, 5-36 months), local tumour progression (LTP) was detected in four tumours. The 1- and 2-year LTP rates after RFA-EA were 18.8% and 27.8%, respectively. The 1- and 2-year disease-free survival (DFS) rates were 35.7% and 13.4%. Six patients died, with the 1-, 2-, and 3-year overall survival (OS) rates of 85.1%, 63.1%, and 21%, respectively. There were no significant differences in the LTP, DFS, and OS rates between the RFA-EA group and RFA-alone or EA groups (p=0.363-0.733). CONCLUSION US-guided percutaneous RFA-EA appears to be a feasible and effective treatment for HCC in the caudate lobe.
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Affiliation(s)
- B Liu
- Division of Interventional Ultrasound, Department of Medical Ultrasound, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
| | - J Long
- Department of Oncology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
| | - W Wang
- Division of Interventional Ultrasound, Department of Medical Ultrasound, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
| | - G Huang
- Division of Interventional Ultrasound, Department of Medical Ultrasound, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
| | - C Jiang
- Division of Interventional Ultrasound, Department of Medical Ultrasound, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
| | - X Zhang
- Division of Interventional Ultrasound, Department of Medical Ultrasound, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
| | - M Liu
- Division of Interventional Ultrasound, Department of Medical Ultrasound, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
| | - P Liang
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, 100853, China
| | - J Yu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, 100853, China
| | - X Xie
- Division of Interventional Ultrasound, Department of Medical Ultrasound, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
| | - M Kuang
- Division of Interventional Ultrasound, Department of Medical Ultrasound, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China; Department of Liver Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China.
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Luo R, Su T, Liang P, Cheng T, Zhou Y, Huang Y. PV-0104: Dosimetric Analysis of Hepatic Toxicity after Stereotactic Body Radiation Therapy. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)30414-6] [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: 10/14/2022]
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Affiliation(s)
- Y Li
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Liang P, Li F, Liu J, Liao D, Huang H, Zhou C. Sevoflurane activates hippocampal CA3 kainate receptors (Gluk2) to induce hyperactivity during induction and recovery in a mouse model. Br J Anaesth 2017; 119:1047-1054. [PMID: 28981700 DOI: 10.1093/bja/aex043] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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] [Accepted: 01/31/2017] [Indexed: 10/13/2023] Open
Abstract
BACKGROUND In addition to general anaesthetic effects, sevoflurane can also induce hyperactive behaviours during induction and recovery, which may contribute to neurotoxicity; however, the mechanism of such effects is unclear. Volatile anaesthetics including isoflurane have been found to activate the kainate (GluK2) receptor. We developed a novel mouse model and further explored the involvement of kainate (GluK2) receptors in sevoflurane-induced hyperactivity. METHODS Maximal speed, mean speed, total movement distance and resting percentage of C57BL/6 mice were quantitatively measured using behavioural tracking software before and after sevoflurane anaesthesia. Age dependence of this model was also analysed and sevoflurane-induced hyperactivity was evaluated after intracerebral injection of the GluK2 receptor blocker NS-102. Neurones from the hippocampal CA3 region were used to undertake in vitro electrophysiological measurement of kainate currents and miniature excitatory postsynaptic potential (mEPSP). RESULTS Sevoflurane induced significant hyperactivities in mice under sevoflurane 1% anaesthesia and during the recovery period, characterized as increased movement speed and total distance. The hyperactivity was significantly increased in young mice compared with adults (P<0.01) and pre-injection of NS-102 significantly prevented this sevoflurane-induced hyperactivity. In electrophysiological experiments, sevoflurane significantly increased the frequency of mEPSP at low concentrations and evoked kainate currents at high concentrations. CONCLUSIONS We developed a behavioural model in mice that enabled characterization of sevoflurane-induced hyperactivity. The kainate (GluK2) receptor antagonist attenuated these sevoflurane-induced hyperactivities in vivo, suggesting that kainate receptors might be the underlying therapeutic targets for sevoflurane-induced hyperactivities in general anaesthesia.
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Affiliation(s)
- P Liang
- Laboratory of Anaesthesia & Critical Care Medicine, Translational Neuroscience Center, West China Hospital of Sichuan University, China
- Department of Anaesthesiology, West China Hospital of Sichuan University, China
| | - F Li
- Laboratory of Anaesthesia & Critical Care Medicine, Translational Neuroscience Center, West China Hospital of Sichuan University, China
| | - J Liu
- Laboratory of Anaesthesia & Critical Care Medicine, Translational Neuroscience Center, West China Hospital of Sichuan University, China
- Department of Anaesthesiology, West China Hospital of Sichuan University, China
| | - D Liao
- Laboratory of Anaesthesia & Critical Care Medicine, Translational Neuroscience Center, West China Hospital of Sichuan University, China
| | - H Huang
- Laboratory of Anaesthesia & Critical Care Medicine, Translational Neuroscience Center, West China Hospital of Sichuan University, China
- Department of Anaesthesiology, West China Second Hospital of Sichuan University, Sichuan, China
| | - C Zhou
- Laboratory of Anaesthesia & Critical Care Medicine, Translational Neuroscience Center, West China Hospital of Sichuan University, China
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Lu H, Yu J, Wu Y, Liu X, Jiang H, Peng L, Deng S, Qin J, Cheng J, Pang Q, Gu J, Lu Z, Liang P, Zhao R, Chen C, Hu X. A Prospective Study on Neoadjuvant Chemoradiation Therapy Plus Anti- EGFR Monoclonal Antibody Followed by Surgery for Patients With Advanced Cervical Cancer. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.074] [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: 10/18/2022]
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45
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Zhou NN, Zhu R, Zhao XM, Liang P. [Effect and mechanism of traditional Chinese herbs against Aβ expression in brain tissues of mice with Alzheimer's disease]. Zhonghua Bing Li Xue Za Zhi 2017; 45:780-785. [PMID: 27821233 DOI: 10.3760/cma.j.issn.0529-5807.2016.11.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effects of gastrodin, astragaloside and paeoniflorin from three types of traditional Chinese herbs against on β-amyloid plaques and memory ability in 5XFAD Alzheimer's disease (AD) transgenic mice. Methods: Seventy 5XFAD mice were randomly divided into seven groups, namely gastrodin-high and gastrodin-low dose groups (GAS-H, GAS-L), astragaloside-high and astragaloside-low dose groups (AST-H, AST-L), and paeoniflorin-high and paeoniflorin-low dose groups (PAE-H, PAE-L), and positive control group. Negative control groups were also established. After being treated for four months, 5XFAD mice were evaluated for memory ability and Aβ plaques, and the mechanism were was explored by utilizing cell model (over-expression Aβ and β-secretase). Results: Gastrodin, astragaloside and paeoniflorin enhanced the learning and memory ability of 5XFAD mice, and reduced Aβ in the cerebral homogenate and Aβ plaques in brain. Compared with the untreated transgenic positive group, Aβ plaques was reduced in hippocampus and cortex in the GAS-H group by 70.1% and 81.0%, in the AST-H group by 62.4% and 69.6%, and in the PAE-H group by 57.6% and 66.6% (P<0.01), respectively. Aβ was reduced in the cerebral homogenate of all groups. The effects were dose-dependent. In vitro study suggested a dose-dependent effect of gastrodin, astragaloside and paeoniflorin in reducing Aβ in cell models. Gastrodin suppressed BACE mRNA level by 32.9% (P<0.01), and suppressed β-secretase protein level by 47.9% (P<0.01). Conclusions: Three types of Chinese herbs can inhibit β-amyloid plaques in brain of AD. Gastrodin reduced Aβ production and accumulation by inhibiting β-secretase. Astragaloside and paeoniflorin have no demonstrable effects against β-secretase.
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Affiliation(s)
- N N Zhou
- Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & School of Basic Medicine , Peking Union Medical College, Beijing 100005, China
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Li DG, Long Y, Liang P, Chen DR. Effect of micro-particles on cavitation erosion of Ti6Al4V alloy in sulfuric acid solution. Ultrason Sonochem 2017; 36:270-276. [PMID: 28069211 DOI: 10.1016/j.ultsonch.2016.12.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 12/02/2016] [Accepted: 12/02/2016] [Indexed: 05/25/2023]
Abstract
The influences of micro-particles on ultrasonic cavitation erosion of Ti6Al4V alloy in 0.1M H2SO4 solution were investigated using mass loss weight, scanning electron microscopy (SEM) and white light interferometer. Mass loss results revealed that the cavitation erosion damage obviously decreased with increasing particle size and mass concentration. Open circuit potential recorded during cavitation erosion shifted to positive direction with the decreased mass loss. Meanwhile, the mass loss sharply decreased with applying a positive potential during the entire ultrasonic cavitation erosion, and the relationship between the open circuit potential and the cavitation erosion resistance was discussed.
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Affiliation(s)
- D G Li
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
| | - Y Long
- School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - P Liang
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - D R Chen
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
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Shen H, Liu X, Zhang P, Wang L, Liu Y, Zhang L, Liang P, Song C. Genome characterization of a porcine circovirus type 3 in South China. Transbound Emerg Dis 2017; 65:264-266. [DOI: 10.1111/tbed.12639] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Indexed: 01/07/2023]
Affiliation(s)
- H. Shen
- College of Animal Science & National Engineering Center for Swine Breeding Industry; South China Agricultural University; Guangzhou China
| | - X. Liu
- College of Animal Science & National Engineering Center for Swine Breeding Industry; South China Agricultural University; Guangzhou China
| | - P. Zhang
- College of Animal Science & National Engineering Center for Swine Breeding Industry; South China Agricultural University; Guangzhou China
| | - L. Wang
- College of Animal Science & National Engineering Center for Swine Breeding Industry; South China Agricultural University; Guangzhou China
| | - Y. Liu
- College of Animal Science & National Engineering Center for Swine Breeding Industry; South China Agricultural University; Guangzhou China
| | - L. Zhang
- College of Animal Science & National Engineering Center for Swine Breeding Industry; South China Agricultural University; Guangzhou China
| | - P. Liang
- College of Animal Science & National Engineering Center for Swine Breeding Industry; South China Agricultural University; Guangzhou China
| | - C. Song
- College of Animal Science & National Engineering Center for Swine Breeding Industry; South China Agricultural University; Guangzhou China
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Li DG, Chen DR, Liang P. Enhancement of cavitation erosion resistance of 316 L stainless steel by adding molybdenum. Ultrason Sonochem 2017; 35:375-381. [PMID: 27838220 DOI: 10.1016/j.ultsonch.2016.10.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 10/14/2016] [Accepted: 10/15/2016] [Indexed: 06/06/2023]
Abstract
The influence of Mo on ultrasonic cavitation erosion of 316 L stainless steel in 3.5% NaCl solution were investigated using an ultrasonic cavitation erosion (CE) facility. The morphologies of specimen after cavitation erosion were observed by scanning electron microscopy (SEM). The results showed that the addition of Mo can sharply decrease the mean depth of erosion (MDE) of 316 L SS, implying the increased resistance of cavitation erosion. In order to better understanding the influence of Mo on the cavitation erosion of 316 L SS, the semi-conductive property of passive films on 316 L SS containing different concentrations of Mo were studied by Mott-Schottky plot. Based on Mott-Schottky results and semiconductor physics, a physical model was proposed to explain the effect mechanism of Mo on cavitation erosion of 316 L SS.
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Affiliation(s)
- D G Li
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
| | - D R Chen
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - P Liang
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
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Zhao XT, Yue SW, Cheng Q, Liu P, Chang LY, Zhao XX, Liang P. [CT findings of inflammatory myofibroblastic tumor of different pathological types]. Zhonghua Yi Xue Za Zhi 2017; 97:43-46. [PMID: 28056290 DOI: 10.3760/cma.j.issn.0376-2491.2017.01.011] [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 the computed tomography(CT) features of inflammatory myofibroblastic tumor(IMT) in different pathological types, and improve the diagnostic level of this disease. Methods: The CT features of 29 cases pathologically confirmed IMTs were retrospectively reviewed along with a literature review to analyze the CT features and pathological correlations, and three kinds of pathological classification of IMT in patients with gender , shape, boundary and location were respectively analyzed by Chi-Square test. Results: The age ranges from 2 to 78 years.There were 7 cases of mucinous blood vessel type and 13 cases of spindle cell type and 9 cases of fiber type.Immunohistochemically, Vimentin (22/29) and SMA (28/29) were positive in all the cases, ALK (4/29) and CD-67(6/29) were partly positive expression, other markers such as S-100 were negative expression.The Chi-Square test showed that there were statistically differences in the gender of the patients. Conclusion: The CT and clinical features differ according to pathological types of IMT. Its final diagnosis still needs to be combined with pathology and immunohistochemistry result. In all, CT has a role in assessing the extension of IMT and especially about the relationship with adjacent organs which can effectively direct the establishment of clinical treating scheme.
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Affiliation(s)
- X T Zhao
- First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
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Huang J, Liang P, Xu J, Wu Y, Shen W, Xu B, Zhang D, Xia J, Zhuang S. Qualitative and quantitative determination of coumarin using surface-enhanced Raman spectroscopy coupled with intelligent multivariate analysis. RSC Adv 2017. [DOI: 10.1039/c7ra09059e] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Coumarin is harmful to health but still used in cosmetics, tobacco, or illegally added into food as a spice in trace amounts so that it is exceedingly difficult to be determined accurately.
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Affiliation(s)
- J. Huang
- College of Optical Electrical and Computer Engineering
- University of Shanghai for Science and Technology
- Shanghai
- China
- College of Optical and Electronic Technology
| | - P. Liang
- College of Optical and Electronic Technology
- China Jiliang University
- 310018 Hangzhou
- China
| | - J. Xu
- College of Optical Electrical and Computer Engineering
- University of Shanghai for Science and Technology
- Shanghai
- China
| | - Y. Wu
- College of Optical and Electronic Technology
- China Jiliang University
- 310018 Hangzhou
- China
| | - W. Shen
- College of Optical and Electronic Technology
- China Jiliang University
- 310018 Hangzhou
- China
| | - B. Xu
- College of Optical and Electronic Technology
- China Jiliang University
- 310018 Hangzhou
- China
| | - D. Zhang
- College of Horticulture & Forestry Sciences
- Huazhong Agricultural University
- Key Laboratory of Horticultural Plant Biology
- Ministry of Education
- Wuhan
| | - J. Xia
- College of Horticulture & Forestry Sciences
- Huazhong Agricultural University
- Key Laboratory of Horticultural Plant Biology
- Ministry of Education
- Wuhan
| | - S. Zhuang
- College of Optical Electrical and Computer Engineering
- University of Shanghai for Science and Technology
- Shanghai
- China
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