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Mei JL, Yang ZX, Li XN. Effect of electroacupuncture of "Jiaji" (EX-B2) on NOD-like receptor protein 3 mediated pyroptosis in spinal cord tissue of rats with acute spinal cord injury. Zhen Ci Yan Jiu 2024; 49:110-118. [PMID: 38413031 DOI: 10.13702/j.1000-0607.20230701] [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: 02/29/2024]
Abstract
OBJECTIVES To observe the effect of electroacupuncture (EA) stimulation of "Jiaji"(EX-B2) on motor function, histomorphology, and expression of NOD-like receptor protein 3 (NLRP3) and N-terminal domain of gasdermin D (GSDMD-N) in the spinal cord tissue of rats with spinal cord injury (SCI), so as to explore its mechanism underlying improvement of SCI. METHODS Forty eight female SD rats were randomly divided into sham surgery (sham), SCI model (model), EA, and NLRP3 agonist (monosodium urate, MSU) combined with Jiaji EA (MSU+EA) groups, with 12 rats in each group which were further divided into 3 d and 7 d subgroups, with 6 rats at each time point. Two EA groups received EA stimulation of EX-B2 with a frequency of 100 Hz, electrical current of 1-2 mA for 30 min, once a day for 3 or 7 days. After 5 min, 6 h, and 24 h of modeling, rats of the MSU+EA group received intraperitoneal injection of MSU (200 μg/kg, 200 μg/mL) . The motor function was evaluated using Basso-Beattie-Bresnahan (BBB) scale, the morphological structure of rat spinal cord tissue was observed by H.E. staining. The expression of pyroptosis related factors NLRP3, cleaved Caspase-1 and GSDMD-N of the spinal cord was observed by using immunohistochemistry and Western blot separately, the expression and localization of Iba-1 and GSDMD-N in the spinal cord tissue were observed using immunofluorescence double staining method. RESULTS Compared with the sham group, the BBB scores after modeling and on day 3 and 7 were decreased (P<0.05), while the average OD values (immunoactivity) and expression levels of NLRP3, cleaved Caspase-1 and GSDMD-N proteins, and the immunofluorescence intensity of Iba-1/GSDMD-N (co-expression) of the spinal cord tissues on day 3 and 7 were significantly increased in the model group (P<0.05). In comparison with the model group, the BBB scores on day 3 and 7 were obviously increased (P<0.05), while the immunoactivity and expression levels of NLRP3, cleaved Caspase-1 and GSDMD proteins, and the immunofluorescence intensity of Iba-1/GSDMD-N on day 3 and 7 significantly down-regulated in the EA group (P<0.05) but not in the MSU+EA group (P>0.05), suggesting an elimination of the effects of EA after administration of NLRP3 agonist (MSU). H.E. staining showed obvious bleeding area in the spinal cord tissue, loose tissue and inflammatory cell infiltration on day 3 after modeling, and basic absorption of the bleeding, loose tissue, obvious vacuolar changes of the white matter area, loss and contraction of neurons with infiltration of a large number of inflammatory cells, which was milder in the EA group but not in the MSU+EA group. CONCLUSIONS EA of EX-B2 can improve the motor function of SCI rats, which may be related to its functions in inhibiting pyroptosis of microglia mediated by NLRP3/Caspase-1 signaling pathway.
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Affiliation(s)
- Ji-Lin Mei
- Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Zhi-Xin Yang
- Chengde Medical College, Chengde 067000, Hebei Province
| | - Xiao-Ning Li
- The Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin 150001.
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Chen Y, Jiang R, Zheng Y, Sheng B, Yang ZX, Wu E. Dual Branch Multi-Level Semantic Learning for Few-Shot Segmentation. IEEE Trans Image Process 2024; 33:1432-1447. [PMID: 38354079 DOI: 10.1109/tip.2024.3364056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Few-shot semantic segmentation aims to segment novel-class objects in a query image with only a few annotated examples in support images. Although progress has been made recently by combining prototype-based metric learning, existing methods still face two main challenges. First, various intra-class objects between the support and query images or semantically similar inter-class objects can seriously harm the segmentation performance due to their poor feature representations. Second, the latent novel classes are treated as the background in most methods, leading to a learning bias, whereby these novel classes are difficult to correctly segment as foreground. To solve these problems, we propose a dual-branch learning method. The class-specific branch encourages representations of objects to be more distinguishable by increasing the inter-class distance while decreasing the intra-class distance. In parallel, the class-agnostic branch focuses on minimizing the foreground class feature distribution and maximizing the features between the foreground and background, thus increasing the generalizability to novel classes in the test stage. Furthermore, to obtain more representative features, pixel-level and prototype-level semantic learning are both involved in the two branches. The method is evaluated on PASCAL- 5i 1 -shot, PASCAL- 5i 5 -shot, COCO- 20i 1 -shot, and COCO- 20i 5 -shot, and extensive experiments show that our approach is effective for few-shot semantic segmentation despite its simplicity.
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Li JC, Du J, Yang ZX, Jin F, Weng JW, Qi YJ, Huang JS, Hei MY, Jiang M. [Analysis of clinical characteristics and risk factors of postoperative complications in infants with early-onset necrotizing enterocolitis after enterostomy]. Zhonghua Yi Xue Za Zhi 2024; 104:38-44. [PMID: 38178766 DOI: 10.3760/cma.j.cn112137-20230926-00577] [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: 01/06/2024]
Abstract
Objective: To investigate the clinical characteristics of children with early-onset necrotizing enterocolitis (NEC) undergoing enterostomy and analyze the risk factors for postoperative complications. Methods: Retrospective analysis was conducted on the clinical data (perinatal conditions, clinical characteristics, clinical outcomes, etc.) of NEC patients who underwent enterostomy at Beijing Children's Hospital from May 2016 to May 2023. The patients were divided into two groups based on the age of onset: an early-onset enterostomy group (<14 days) and a late-onset enterostomy group (≥14 days). Furthermore, the children with NEC were categorized into complication group and non-complication group based on whether there were complications after enterostomy. The differences in clinical data between these groups were analyzed, and the clinical characteristics of children with early-onset NEC and enterostomy were summarized. Multivariate logistic regression model was employed to analyze the risk factors for postoperative complications in NEC children with enterostomy. Results: A total of 68 cases were enrolled, including 43 cases in the early-onset enterostomy group [26 males and 17 females, aged (6.5±3.0) days] and 25 cases in the late-onset enterostomy group [15 males and 10 females, aged (21.0±3.0) days]. There were 28 cases (17 males and 11 females), age [M (Q1, Q3)] 9 (5, 14) days in the complication group and 33 cases (22 males and 11 females), aged of 14 (6, 21) days in the non-complication group. Compared to the late-onset enterostomy group, the early-onset enterostomy group had significantly higher rates of intraventricular hemorrhage [30.2% (13/43) vs 8.0% (2/25)], hemodynamically significant patent ductus arteriosus [37.2% (16/43) vs 12.0% (3/25)], mechanical ventilation≥72 hours after birth [39.5% (17/43) vs 16.0% (4/25)], stage Ⅲ NEC [(69.8% (30/43) vs 40.0% (10/25)], extensive NEC [27.9% (12/43) vs 8.0% (2/25)], and short-term postoperative complications [56.8% (21/37) vs 29.2% (7/24)] (all P<0.05).Multivariate logistic regression model analysis revealed that residual length of proximal small intestine was a protective factor for postoperative complications after enterostomy in NEC infants (OR=0.764, 95%CI: 0.648-0.901, P=0.001), but stage Ⅲ NEC was a risk factor (OR=1.042, 95%CI: 1.004-5.585, P=0.017). Conclusions: The incidence of postoperative complications is high, and the prognosis is poor in children with early-onset NEC enterostomy. The residual length of proximal enterostomy is a protective factor for postoperative complications of NEC enterostomy, but stage Ⅲ NEC is a risk factor.
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Affiliation(s)
- J C Li
- Neonatal Center, Beijing Children's Hospital, Capital Medical University; National Center for Children's Health, Beijing 100045, China
| | - J Du
- Neonatal Center, Beijing Children's Hospital, Capital Medical University; National Center for Children's Health, Beijing 100045, China
| | - Z X Yang
- Neonatal Center, Beijing Children's Hospital, Capital Medical University; National Center for Children's Health, Beijing 100045, China
| | - F Jin
- Neonatal Center, Beijing Children's Hospital, Capital Medical University; National Center for Children's Health, Beijing 100045, China
| | - J W Weng
- Neonatal Center, Beijing Children's Hospital, Capital Medical University; National Center for Children's Health, Beijing 100045, China
| | - Y J Qi
- Neonatal Center, Beijing Children's Hospital, Capital Medical University; National Center for Children's Health, Beijing 100045, China
| | - J S Huang
- Department of Neonatal Surgery, Beijing Children's Hospital, Capital Medical University; National Center for Children's Health, Beijing 100045, China
| | - M Y Hei
- Neonatal Center, Beijing Children's Hospital, Capital Medical University; National Center for Children's Health, Beijing 100045, China
| | - M Jiang
- Neonatal Center, Beijing Children's Hospital, Capital Medical University; National Center for Children's Health, Beijing 100045, China
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Li BL, Wang JR, Liu XY, Lu JS, Wang R, Du P, Yu S, Pang XB, Yu YZ, Yang ZX. Tetanus toxin and botulinum neurotoxin-derived fusion molecules are effective bivalent vaccines. Appl Microbiol Biotechnol 2023; 107:7197-7211. [PMID: 37741939 DOI: 10.1007/s00253-023-12796-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/06/2023] [Accepted: 09/13/2023] [Indexed: 09/25/2023]
Abstract
Tetanus toxin (TeNT) and botulinum neurotoxins (BoNTs) are neuroprotein toxins, with the latter being the most toxic known protein. They are structurally similar and contain three functional domains: an N-terminal catalytic domain (light chain), an internal heavy-chain translocation domain (HN domain), and a C-terminal heavy chain receptor binding domain (Hc domain or RBD). In this study, fusion functional domain molecules consisting of the TeNT RBD (THc) and the BoNT/A RBD (AHc) (i.e., THc-Linker-AHc and AHc-Linker-THc) were designed, prepared, and identified. The interaction of each Hc domain and the ganglioside receptor (GT1b) or the receptor synaptic vesicle glycoprotein 2 (SV2) was explored in vitro. Their immune response characteristics and protective efficacy were investigated in animal models. The recombinant THc-linker-AHc and AHc-linker-THc proteins with the binding activity had the correct size and structure, thus representing novel subunit vaccines. THc-linker-AHc and AHc-linker-THc induced high levels of specific neutralizing antibodies, and showed strong immune protective efficacy against both toxins. The high antibody titers against the two novel fusion domain molecules and against individual THc and AHc suggested that the THc and AHc domains, as antigens in the fusion functional domain molecules, do not interact with each other and retain their full key epitopes responsible for inducing neutralizing antibodies. Thus, the recombinant THc-linker-AHc and AHc-linker-THc molecules are strong and effective bivalent biotoxin vaccines, protecting against two biotoxins simultaneously. Our experimental design will be valuable to develop recombinant double-RBD fusion molecules as potent bivalent subunit vaccines against bio-toxins. KEY POINTS: • Double-RBD fusion molecules from two toxins had the correct structure and activity. • THc-linker-AHc and AHc-linker-THc efficiently protected against both biotoxins. • Such bivalent biotoxin vaccines based on the RBD are a valuable experimental design.
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Affiliation(s)
- Bo-Lin Li
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, 20 Dongdajie Street, Beijing, 100071, China
| | - Jing-Rong Wang
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, 20 Dongdajie Street, Beijing, 100071, China
| | - Xu-Yang Liu
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, 20 Dongdajie Street, Beijing, 100071, China
- Pharmaceutical College, Henan University, Kaifeng, 475001, China
| | - Jian-Sheng Lu
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, 20 Dongdajie Street, Beijing, 100071, China
| | - Rong Wang
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, 20 Dongdajie Street, Beijing, 100071, China
| | - Peng Du
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, 20 Dongdajie Street, Beijing, 100071, China
| | - Shuo Yu
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, 20 Dongdajie Street, Beijing, 100071, China
| | - Xiao-Bin Pang
- Pharmaceutical College, Henan University, Kaifeng, 475001, China.
| | - Yun-Zhou Yu
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, 20 Dongdajie Street, Beijing, 100071, China.
| | - Zhi-Xin Yang
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, 20 Dongdajie Street, Beijing, 100071, China.
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Zhang YJ, Yang JQ, Wu J, Guo JE, Yang ZX, Liu JY, Wang YM. [Evaluation of the clinical effect of acupuncture in treatment of neck pain in cervical spondylosis based on propensity score matching]. Zhongguo Zhen Jiu 2023; 43:907-10. [PMID: 37577886 DOI: 10.13703/j.0255-2930.20220621-k0002] [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: 08/15/2023]
Abstract
OBJECTIVE To observe the clinical effect and safety of acupuncture in treatment of neck pain due to cervical spondylosis. METHODS According to the patients' preference and acceptance for the interventions of neck pain induced by cervical spondylosis, an acupuncture group (221 cases) and a non-acupuncture group (251 cases) were divided. After the control of confounding factors with propensity score matching, 218 cases were included in either acupuncture group or non-acupuncture group. In the acupuncture group, acupuncture was applied to Dazhui (GV 14), Baihui (GV 20), ashi points, bilateral neck-Jiaji (EX-B 2), Fengchi (GB 20), Houxi (SI 3), Shenmai (BL 62), etc. The treatment was given once daily, one course of intervention was composed of 5 treatments and 3 courses were included. In the non-acupuncture group, the oral administration of imrecoxib tablets and cobalt tablets was prescribed for 2 weeks. Before and after treatment, the scores of Northwick Park questionnaire (NPQ) and the simplified McGill pain questionnaire (SF-MPQ) were observed, and the safety was assessed in patients of the two groups. RESULTS After treatment completion, the scores of NPQ and SF-MPQ were all reduced when compared with those before treatment in each group (P<0.001), and the scores of NPQ and SF-MPQ in the acupuncture group were lower than those of the non-acupuncture group (P<0.001). The incidence of adverse reactions was 6.0% (13/218) in the acupuncture group and was 10.1% (22/218) in the non-acupuncture group, without statistical significance in comparison (P>0.05). CONCLUSION Acupuncture is effective and safe in the relief of neck pain and the improvement of comprehensive quality of life in the patients with cervical spondylosis.
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Affiliation(s)
- Yin-Juan Zhang
- Department of Chinese Medicine, Chengde Medical College, Chengde 067000, Hebei Province, China
| | - Jia-Qi Yang
- School of Basic Medicine, Chengde Medical College, Chengde 067000, Hebei Province, China
| | - Jie Wu
- Department of Chinese Medicine, Chengde Medical College, Chengde 067000, Hebei Province, China
| | - Jian-En Guo
- Department of Chinese Medicine, Chengde Medical College, Chengde 067000, Hebei Province, China
| | - Zhi-Xin Yang
- Department of Chinese Medicine, Chengde Medical College, Chengde 067000, Hebei Province, China
| | - Jin-Ying Liu
- Department of Chinese Medicine, Chengde Medical College, Chengde 067000, Hebei Province, China
| | - Yu-Man Wang
- Department of Chinese Medicine, Chengde Medical College, Chengde 067000, Hebei Province, China
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Mei JL, Yang ZX, Li XN. [Research progress of acupuncture-moxibustion in treatment of spinal cord injury through mediating inflammatory reaction]. Zhen Ci Yan Jiu 2023; 48:699-705. [PMID: 37518965 DOI: 10.13702/j.1000-0607.20221181] [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: 08/01/2023]
Abstract
Inflammatory reaction after spinal cord injury (SCI) is the main obstacle to the recovery of neural function. In the occurrence and development of SCI, the complex regulatory mechanisms are involved in inflammatory reaction, including the activation of inflammatory cells (e.g.macrophages and microglia), and the release of cytokines (e.g. tumor necrosis factor, interleukin and chemokines). Acupuncture-moxibustion is significantly effective in clinical treatment of SCI, and its mechanism is related to adjusting the function of inflammatory cells after SCI, modulating the expression of cytokines and the activation of NLRP3 inflammatory bodies, as well as the expression of high mobility group protein B1 and calcitonin gene related peptide. This article summarizes the research progress of mechanism of inflammatory reaction after SCI and the effects of acupuncture-moxibustion intervention in recent years so that the new ideas can be provided to clarify the pathogenesis of SCI and the effect of acupuncture-moxibustion intervention.
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Affiliation(s)
- Ji-Lin Mei
- Heilongjiang University of Traditional Chinese Medicine, Harbin 150040, China
| | - Zhi-Xin Yang
- Chengde Medical College, Chengde 067000, Hebei Province
| | - Xiao-Ning Li
- The Second Affiliated Hospital of Heilongjiang University of Traditional Chinese Medicine, Harbin 150001
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Yang ZX, Li CS, Wang XB, Chen H. Intelligent fault monitoring and diagnosis of tunnel fans using a hierarchical cascade forest. ISA Trans 2023; 136:442-454. [PMID: 36435644 DOI: 10.1016/j.isatra.2022.10.037] [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] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 08/10/2022] [Accepted: 10/29/2022] [Indexed: 05/16/2023]
Abstract
Tunnel fan is critical fire-fighting equipment, and its safe and stable operation is very important for the efficiency and safety of tunnel traffic. Existing studies commonly train the fault diagnosis methods with the goal of minimizing mean error which ignores the difference between classes in feature distribution. To solve the problem of inaccurate prediction caused by mean error evaluation, this paper presents a non-neural deep learning model, namely hierarchical cascade forest, which has three characteristics: (1) A hierarchical cascade structure is constructed, of which the output comes from each layer; (2) Each fault class is evaluated and recognized independently, the result of fault classes that are easy to distinguish is output earlier; (3) A confidence-based threshold estimate method is proposed in HCF and used to improve the training method to increase the reliability of HCF. Based on these, HCF improves the cascade forest structure and implements the proper matching of different depth of feature and fault patterns. The effect of HCF is verified through experiments based on the tunnel fans testing rig. Experimented results show that, compared to Deep Forest, the accuracy of HCF increases by 0.6% to 10.8%, and the training time of HCF is reduced 33.24%.
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Affiliation(s)
- Zhi-Xin Yang
- State Key Laboratory of Internet of Things for Smart City, University of Macau, 999078, Macao Special Administrative Region of China.
| | - Chao-Shun Li
- The School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Xian-Bo Wang
- Hainan Institute of Zhejiang University, SanyaChina 572000, China; State Key Laboratory of Internet of Things for Smart City, University of Macau, 999078, Macao Special Administrative Region of China.
| | - Hao Chen
- State Key Laboratory of Internet of Things for Smart City, University of Macau, 999078, Macao Special Administrative Region of China.
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Li XY, Luo YT, Wang YH, Yang ZX, Shang YZ, Guan QX. Anti-inflammatory effect and antihepatoma mechanism of carrimycin. World J Gastroenterol 2023; 29:2134-2152. [PMID: 37122599 PMCID: PMC10130968 DOI: 10.3748/wjg.v29.i14.2134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/29/2022] [Accepted: 03/13/2023] [Indexed: 04/13/2023] Open
Abstract
BACKGROUND New drugs are urgently needed for the treatment of liver cancer, a feat that could be feasibly accomplished by finding new therapeutic purposes for marketed drugs to save time and costs. As a new class of national anti-infective drugs, carrimycin (CAM) has strong activity against gram-positive bacteria and no cross resistance with similar drugs. Studies have shown that the components of CAM have anticancer effects.
AIM To obtain a deeper understanding of CAM, its distribution, metabolism and anti-inflammatory effects were assessed in the organs of mice, and its mechanism of action against liver cancer was predicted by a network pharmacology method.
METHODS In this paper, the content of isovaleryl spiramycin III was used as an index to assess the distribution and metabolism of CAM and its effect on inflammatory factors in various mouse tissues and organs. Reverse molecular docking technology was utilized to determine the target of CAM, identify each target protein based on disease type, and establish a target protein-disease type network to ascertain the effect of CAM in liver cancer. Then, the key action targets of CAM in liver cancer were screened by a network pharmacology method, and the core targets were verified by molecular docking and visual analyses.
RESULTS The maximum CAM concentration was reached in the liver, kidney, lung and spleen 2.5 h after intragastric administration. In the intestine, the maximum drug concentration was reached 0.5 h after administration. In addition, CAM significantly reduced the interleukin-4 (IL-4) levels in the lung and kidney and especially the liver and spleen; moreover, CAM significantly reduced the IL-1β levels in the spleen, liver, and kidney and particularly the small intestine and lung. CAM is predicted to regulate related pathways by acting on many targets, such as albumin, estrogen receptor 1, epidermal growth factor receptor and caspase 3, to treat cancer, inflammation and other diseases.
CONCLUSION We determined that CAM inhibited inflammation. We also predicted the complex multitargeted effects of CAM that involve multiple pathways and the diversity of these effects in the treatment of liver cancer, which provides a basis and direction for further clinical research.
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Affiliation(s)
- Xiu-Yan Li
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Yu-Ting Luo
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Yan-Hong Wang
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Zhi-Xin Yang
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Yu-Zhou Shang
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Qing-Xia Guan
- Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
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Shi DY, Lu JS, Mao YY, Liu FJ, Wang R, Du P, Yu S, Yu YZ, Yang ZX. Characterization of a novel tetravalent botulism antitoxin based on receptor-binding domain of BoNTs. Appl Microbiol Biotechnol 2023; 107:3205-3216. [PMID: 37058230 PMCID: PMC10102682 DOI: 10.1007/s00253-023-12515-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/27/2023] [Accepted: 03/31/2023] [Indexed: 04/15/2023]
Abstract
Botulinum neurotoxin (BoNTs; serotypes A, B, E, and F) cause botulism disease in humans, which could be effectively treated using antitoxins. Herein, we established a novel receptor-binding domain (RBD)-based antitoxin using recombinant C terminal heavy chain (Hc) domains of BoNTs as immunogens. Immunization of horses with these recombinant Hc domains allowed the purification and digestion of IgGs from hyper-immune sera to produce high-quality and high-efficiency monovalent botulism antitoxin F(ab')2 against each BoNT (M-BATs). However, these M-BATs could not bind or neutralize other serotypes of BoNTs, and that there were no cross-protective effects among these M-BATs. This suggested the need to prepare tetravalent antitoxins to neutralize the four BoNTs simultaneously. Thus, these M-BATs were formulated into a novel tetravalent botulism antitoxin (T-BAT), in which a 10-ml volume contained 10000 IU of BoNT/A and 5000 IU of BoNT/B, BoNT/E, and BoNT/F antitoxins. The novel antitoxin preparation could prevent and treat the four mixed botulinum neurotoxins simultaneously in vivo, representing strong efficacy in an animal poisoning model. Moreover, these antibodies in T-BAT could bind the RBD, whereas conventional antitoxins based on inactivated toxins mainly bind the light chain or heavy chain translocation domain (HN) and weakly bind the important RBD in current experimental conditions. The high levels of RBD-specific novel antitoxins can efficiently bind the RBD and neutralize natural or recombinant toxins containing this RBD. The findings of the present study experimentally support the use of RBD-specific antitoxins to treat BoNT serotype A, B, E, and F-mediated botulism. This study demonstrated the concept of developing potent novel multivalent antitoxins against all BoNTs or other toxins, using the RBD of these toxins as an alternative antigen to inactivated toxins. KEY POINTS: • Antitoxins based on the receptor-binding domains of botulinum neurotoxins were made. • Novel antitoxin binds RBD; traditional antitoxin mainly binds light chain or HN domain. • A tetravalent antitoxin could prevent and treat the four mixed neurotoxins in vivo.
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Affiliation(s)
- Dan-Yang Shi
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, Beijing, 100071, China
- Tianjin Institute of Environmental & Operational Medicine, Tianjin, 300050, China
| | - Jian-Sheng Lu
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Yun-Yun Mao
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Fu-Jia Liu
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Rong Wang
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Peng Du
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Shuo Yu
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Yun-Zhou Yu
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, Beijing, 100071, China.
| | - Zhi-Xin Yang
- Laboratory of Advanced Biotechnology, Beijing Institute of Biotechnology, Beijing, 100071, China.
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Wang DH, Niu XY, Cheng MM, Chen Y, Yang Y, Yang XL, Yang ZX, Zhang YH. [Genotypes and phenotypes of IQSEC2 gene variants related epilepsy]. Zhonghua Er Ke Za Zhi 2022; 60:1317-1321. [PMID: 36444437 DOI: 10.3760/cma.j.cn112140-20220614-00550] [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: 06/16/2023]
Abstract
Objective: To analyze the genotypes and clinical phenotypes of patients with epilepsy associated with IQSEC2 gene variants. Methods: The genotypes, seizure types, electroencephalogram, neuroimage of 6 patients with IQSEC2 gene variants in the Department of Pediatrics, Peking University First Hospital from July 2019 to October 2021 were analyzed. Results: There were 5 males and 1 female. Six variants were de novo, including 2 frameshift variants (c.3801_3808dup/p.Q1270Rfs*130, c.1459_1460delAT/p.M487Vfs*2), 2 nonsense variants (c.3163C>T/p.R1055*, c.1417G>T/p.E473*), 1 in-frame deletion (c.2295_2297del/p.N765del) and 1 missense variant (c.2293A>G/p.N765D). Age at seizure onset ranged from 3 months to 2 years and 5 months. Multiple seizure types were observed, including epileptic spasms in 5 patients, focal seizures in 5 patients, tonic seizures in 3 patients, myoclonic seizures in 3 patients, atypical absence seizures in 2 patients and atonic seizures in 2 patients. All 6 patients showed global developmental delay before seizure onset. There were other clinical manifestations, including autistic features in 3 patients, microcephaly in 3 patients, dystonia in 2 patients and binocular esotropia in 1 patient. The electroencephalogram showed slow background activity and hypsarrhythmia in all 6 patients. Brain magnetic resonance imaging showed abnormal in 5 patients and normal in 1 patient. Five patients were diagnosed with infantile spasms. Among them, 4 patients had late-onset infantile spasms. One patient was unclassified developmental epileptic encephalopathy. The age of last follow-up ranged from 3 years and 2 months to 7 years and 2 months. All 6 patients still had seizures after multiple anti-seizure medications. Conclusions: The seizure onset of patients with IQSEC2 gene variants usually begins after 1 year of age. The common seizure types include epileptic spasms and focal seizures. Patients usually have a global developmental delay before seizure onset. IQSEC2 variants could be related to developmental and epileptic encephalopathy, and most patients are diagnosed with late onset infantile spasms. Epilepsy associated with IQSEC2 gene variants is usually refractory.
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Affiliation(s)
- D H Wang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - X Y Niu
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - M M Cheng
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y Chen
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - X L Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Z X Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y H Zhang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
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11
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Shi DY, Liu FJ, Li ZY, Mao YY, Lu JS, Wang R, Pang XB, Yu YZ, Yang ZX. Development and evaluation of a tetravalent botulinum vaccine. Hum Vaccin Immunother 2022; 18:2048621. [PMID: 35435814 PMCID: PMC9196761 DOI: 10.1080/21645515.2022.2048621] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Botulinum neurotoxins (BoNTs) are the most toxic known proteins. Naturally occurring botulism in humans is caused by botulinum serotypes A, B, E, and F. Vaccination is an effective strategy to prevent botulism. In this study, a tetravalent botulinum vaccine (TBV) that can prevent serotypes A, B, E, and F was developed using the C-terminal receptor-binding domain of BoNT (Hc) as an antigen. To develop a suitable vaccine formulation, in vitro binding experiments of antigens and aluminum adjuvant in different buffers, and in vivo experiments of TBV at different antigen concentrations, were conducted. Our results showed that the optimal vaccine formulation buffer was a pH 6.0 phosphate buffer, and the suitable antigen concentration was 40 or 80 µg/ml of each antigen. A pilot-scale TBV was then prepared and evaluated for immunogenicity and stability. The results showed that TBV could elicit strong protective efficacy against each BoNT in mice, and remain effective after two years of storage at 4ºC, indicating that the preparation was stable and highly effective. Adsorption experiments also showed that the antigens could be well adsorbed by the aluminum adjuvant after 2 years of storage. Our results provide valuable experimental data supporting the development of a tetravalent botulinum vaccine, which is a promising candidate for the prevention of botulinum serotypes A, B, E, and F.
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Affiliation(s)
- Dan-Yang Shi
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China.,Key Laboratory of Risk Assessment and Control for Environment & Food Safety, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China
| | - Fu-Jia Liu
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China.,Pharmaceutical College, Henan University, Kaifeng, China
| | - Zhi-Ying Li
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China.,Pharmaceutical College, Henan University, Kaifeng, China
| | - Yun-Yun Mao
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Jian-Sheng Lu
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Rong Wang
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Xiao-Bin Pang
- Pharmaceutical College, Henan University, Kaifeng, China
| | - Yun-Zhou Yu
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Zhi-Xin Yang
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China
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Liu X, Yang ZX, Xu Z, Yan X. NeuroVI-based new datasets and space attention network for the recognition and falling detection of delivery packages. Front Neurorobot 2022; 16:934260. [PMID: 36310630 PMCID: PMC9606471 DOI: 10.3389/fnbot.2022.934260] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
With the popularity of online-shopping, more and more delivery packages have led to stacking at sorting centers. Robotic detection can improve sorting efficiency. Standard datasets in computer vision are crucial for visual detection. A neuromorphic vision (NeuroVI) camera is a bio-inspired camera that can capture dynamic changes of pixels in the environment and filter out redundant background information with low latency. NeuroVI records pixel changes in the environment with the output of event-points, which are very suitable for the detection of delivery packages. However, there is currently no logistics dataset with the sensor, which limits its application prospects. This paper encodes the events stream of delivery packages, and converts the event-points into frame image datasets for recognition. Considering the falling risk during the packages' transportation on the sorting belt, another falling dataset is made for the first time. Finally, we combine different encoding images to enhance the feature-extraction on the YOLO network. The comparative results show that the new datasets and image-confusing network can improve the detection accuracy with the new NeuroVI.
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Affiliation(s)
- Xiangyong Liu
- The State Key Laboratory of the Internet of Things for Smart City (IOTSC), University of Macau, Macau, Macao SAR, China
- Department of Electromechanical Engineering, University of Macau, Macau, Macao SAR, China
- College of Automotive Engineering, Tongji University, Shanghai, China
- *Correspondence: Xiangyong Liu
| | - Zhi-Xin Yang
- The State Key Laboratory of the Internet of Things for Smart City (IOTSC), University of Macau, Macau, Macao SAR, China
- Department of Electromechanical Engineering, University of Macau, Macau, Macao SAR, China
- Zhi-Xin Yang
| | - Zhiqiang Xu
- School of Mechanical Engineering, Tongji University, Shanghai, China
| | - Xiaoan Yan
- The State Key Laboratory of the Internet of Things for Smart City (IOTSC), University of Macau, Macau, Macao SAR, China
- Department of Electromechanical Engineering, University of Macau, Macau, Macao SAR, China
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13
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Li YL, Guan X, Dou LZ, Liu Y, Huang HY, Huang SK, Yang ZX, Wei BJ, Wu Y, Chen ZH, Wang GQ, Wang X, Cui W. [The clinical value of multi-target stool fecal immunochemical test-DNA in early screening and diagnosis for colorectal cancer]. Zhonghua Yi Xue Za Zhi 2022; 102:2607-2613. [PMID: 36058686 DOI: 10.3760/cma.j.cn112137-20220430-00974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To investigate the clinical diagnostic value of multi-target stool fecal immunochemical test-DNA (FIT-DNA) test in colorectal cancer (CRC) and advanced adenoma (AA). Methods: A total of 235 patients who were undergoing colonoscopy or colorectal cancer surgery in the Cancer Hospital, Chinese Academy of Medical Sciences from April 2021 to January 2022 were prospectively enrolled. There were 141 males and 94 females, with an average age of (55±13) years (22-86). The patients were divided into two groups, including 215 patients who were first diagnosed but not treated (86 cases of CRC, 12 cases of AA, 25 cases of non-advanced adenoma, 8 cases of hyperplastic or other polyps and 84 apparently healthy cases) and 20 patients in the intervention group (2 cases with a history of CRC surgery, 6 cases with a history of endoscopic surgery, 4 non-CRC patients with special diseases and 8 cases with a history of neoadjuvant chemoradiotherapy). Fresh stool samples were collected before intestinal preparation or surgery for FIT-DNA test using the matching kit for sample processing and nucleic acid purification. KRAS mutation and methylation of BMP3 and NDRG4 genes were detected by fluorescence probe method, and FIT method was employed to detect fecal occult blood. Colonoscopy or pathological biopsy results were used as the gold standard. And the screening and diagnostic efficacy of FIT-DNA test for colorectal cancer and advanced adenoma were evaluated by receiver operating curve (ROC). Results: The sensitivity of FIT-DNA test for early colorectal cancer and advanced adenoma was 7/7 and 8/12, respectively. And the negative predictive value was 98.1% (104/106) and 93.7% (104/111), respectively. The overall screening sensitivity for both early colorectal cancer and advanced adenoma was 15/19, and the negative predictive value was 96.3% (104/108). Besides, the area under the curves (AUCs) were 0.982 (95%CI: 0.960-1.000, P<0.05), 0.758 (95%CI: 0.592-0.924, P<0.05) and 0.841 (95%CI: 0.724-0.957, P<0.05), respectively. Moreover, the diagnostic sensitivity of FIT-DNA test was 98.8% (85/86) for colorectal cancer, 8/12 for advanced adenoma, and 94.9% (93/98) for both colorectal cancer and advanced adenoma, with a specificity of 88.9% (104/117). The AUCs were 0.968 (95%CI: 0.937-0.997, P<0.05), 0.758 (95%CI: 0.592-0.924, P<0.05) and 0.942 (95%CI: 0.905-0.979, P<0.05), respectively. After the inclusion of intervention group, the overall diagnostic sensitivity and specificity of FIT-DNA test was 91.6% (98/107) and 89.1% (114/128), respectively. Conclusion: FIT-DNA test has a high early screening and diagnostic efficacy for colorectal cancer.
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Affiliation(s)
- Y L Li
- Department of Medical Laboratory, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - X Guan
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - L Z Dou
- Department of Endoscopy, 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 Liu
- Department of Endoscopy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Y Huang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S K Huang
- Department of Medical Laboratory, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Z X Yang
- Department of Medical Laboratory, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - B J Wei
- Department of Medical Laboratory, 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 Wu
- Department of Medical Laboratory, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Z H Chen
- Department of Endoscopy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - G Q Wang
- Department of Endoscopy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Xishan Wang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Wei Cui
- Department of Medical Laboratory, 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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Shen XD, Xu M, Su C, Ye M, Li W, Yang ZX, Han J, Zhang ZQ, Xiang HG, Yu LH, Sun P, Huang WH, Xie BW, Guan YX, Cai ZH, Zhang W, Zang L. [Preliminary analysis of the promotion effect of laparoscopic standardized surgical treatment for gastric cancer in regional medical centers in Shanghai]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:708-715. [PMID: 35970805 DOI: 10.3760/cma.j.cn441530-20220412-00144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To explore the promotion effect of laparoscopic standardized surgery for gastric cancer observational in some regional medical centers in Shanghai. Methods: A retrospective cohort study was carried out. Eleven regional medical centers in Shanghai received the promotion program of laparoscopic standardized surgery for gastric cancer, which was led by Ruijin Hospital, Shanghai Jiaotong University School of Medicine (Shanghai Minimally Invasive Surgery Center) from January to December 2020. Clinicopathological data of gastric cancer patients treated at these 11 regional medical centers before and after the promotion program were collected. Inclusion criteria were as follows: patients undergoing laparoscopic distal gastrectomy or total gastrectomy; gastric cancer confirmed by pathology; without distant metastasis or peritoneal metastasis. Patients who did not undergo laparoscopic D2 radical resection, or received neoadjuvant chemotherapy before surgery, or without complete clinical data were excluded. Patients undergoing laparoscopic surgery from January to December 2019 were included in the pre-promotion group (46 cases). Patients undergoing laparoscopic surgery from January to December 2021 were included in the post-promotion group (102 cases). In addition, patients undergoing laparoscopic surgery at Ruijin Hospital from January 2021 to December were included in the control group (138 cases). The baseline data, perioperative measurements postoperative complications, and pathological results of the three groups were analyzed and compared. Results: There were no significant differences in baseline characteristics among the three groups (all P>0.05). Compared with the pre-promotion group, the operation time in post-promotion group was significantly shorter [(207.3±36.0) minutes vs. (254.2±47.1) minutes, t=7.038,P<0.001], and the number of harvested lymph node was significantly more (24.4±12.2 vs. 18.9±5.5, t=2.900, P=0.004). However, there were no significant differences in the extent of resection, time to fluid intake, and postoperative hospital stay between the two groups (all P>0.05). Compared with the control group, the operation time [(207.3±36.0) minutes vs (172.6±26.0) minutes, t=8.281, P<0.001], time to fluid intake [(6.3±3.2) days than (5.5±3.0) days, t=2.029, P=0.044], and the postoperative hospital stay [(14.3±5.6) days vs. (10.1±4.8) days, t=6.036, P<0.001] in the post- promotion group were still longer. Total gastrectomy was less common in the post-promotion group compared with the control group [18 cases (17.6%) vs. 41 cases (29.7%), χ2=7.380, P=0.007]. However, there was no significant difference in the number of harvested lymph node between the two groups (P>0.05). The morbidity of postoperative complication in the post-promotion group (9.8%, 10/102) was significantly lower than that in the pre-promotion group (23.9%, 11/46) (χ2=5.183, P=0.023), while above morbidity was not significantly different between the post-promotion group and the control group [9.8% vs. 6.5% (9/138), χ2=0.867, P=0.352]. Conclusion: After the promotion of laparoscopic standardized surgery for gastric cancer in regional medical centers, the standardization degree of surgery has been improved, and the morbidity of postoperative complication decreases. Laparoscopic standardized surgery for gastric cancer can be promoted to more regional medical centers.
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Affiliation(s)
- X D Shen
- Department of General Surgery, Minhang Hospital, Fudan University, Shanghai 201199, China
| | - M Xu
- Department of General Surgery, Pudong Hospital, Fudan University, Shanghai 201399, China
| | - C Su
- Department of General Surgery, Minhang Hospital, Fudan University, Shanghai 201199, China
| | - M Ye
- Department of General Surgery, Pudong Hospital, Fudan University, Shanghai 201399, China Department of General Surgery, Shanghai Pudong New District Punan Hospital, Shanghai 200125, China
| | - W Li
- Department of General Surgery, Shanghai Putuo District Central Hospital, Shanghai 200062, China
| | - Z X Yang
- Department of General Surgery, Shanghai Seventh People's Hospital, Shanghai 200137, China
| | - J Han
- Department of General Surgery, Shanghai Pudong New District Zhoupu Hospital, Shanghai 201318, China
| | - Z Q Zhang
- Department of General Surgery, Shanghai Fourth People's Hospital, Shanghai 200081, China
| | - H G Xiang
- Department of General Surgery, Shanghai Pudong New District People's Hospital, Shanghai 201299, China
| | - L H Yu
- Department of General Surgery, Shanghai Songjiang Fangta Hospital of Traditional Chinese Medicine, Shanghai 201699, China
| | - P Sun
- Department of General Surgery, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200050, China
| | - W H Huang
- Department of General Surgery, Jinshan Hospital, Fudan University, Shanghai 201508, China
| | - B W Xie
- Department of General Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
| | - Y X Guan
- Department of General Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
| | - Z H Cai
- Department of General Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
| | - Wenpeng Zhang
- Department of General Surgery, Luwan Branch of Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200020, China
| | - Lu Zang
- Department of General Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
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Xi RD, Xiao X, Ma TN, Yang ZX. Adaptive Sliding Mode Disturbance Observer Based Robust Control for Robot Manipulators Towards Assembly Assistance. IEEE Robot Autom Lett 2022. [DOI: 10.1109/lra.2022.3164448] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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16
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Hong XF, Li L, Yang ZX, Yan J. [Paeoniflorin improves myocardial injury via inhibition of Src/VE-cadherin pathway in septic rats]. Zhonghua Nei Ke Za Zhi 2022; 61:652-658. [PMID: 35673745 DOI: 10.3760/cma.j.cn112138-20210811-00545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To study the protective effect and mechanism of paeoniflorin (pae) on myocardial injury in septic rats. Methods: Sprague-Dawley (SD) rats were randomly divided into 4 groups with 10 rats in each group. Rats were intraperitoneally injected with 1.4 ml normal saline and 1.4 ml 5% dimethyl sulfoxide (DMSO)solution independently in control group and DMSO group. Rats were intraperitoneally injected with 1.4 ml normal saline and 1.4 ml pae independently, then with 0.1 ml lipopolysaccharide (LPS) 1 hour later in sepsis group and pae group. Enzyme linked immunosorbent assay (ELISA) was used to detect serum cardiac troponin I (cTnI) levels and myocardial tissue tumor necrosis factor alpha (TNFα), interleukin(IL)-6, IL-1β, chemokine (C-X-C motif) ligand 1 (CXCL1), chemokine (C-X-C motif) ligand 2 (CXCL2), vascular cell adhesion molecule 1 (VCAM-1) levels. Evans blue (EB) method was used to detect the EB content of myocardial tissue. HE staining method was used to observe the pathological changes, real-time quantitative polymerase chain reaction (RT-qPCR) to detect mRNA expression levels of the above molecules, and Western-blot to detect vascular endothelium-cadherin (VE-cadherin), phosphorylated p38 mitogen-activated protein kinase (P-p38MAPK), phosphorylated Src protein (P-Src), Ras-Related C3 Botulinum Toxin Substrate 1 (Rac1) levels. Results: Compared with control group, cTnI level and the EB content in sepsis group increased significantly, and the myocardial inflammatory cell infiltration was obvious. The cTnI level and EB content in pae group were significantly reduced, and myocardial inflammatory cell infiltration was reduced [cTnI: (227.7±15.9)pg/ml vs. (312.9±17.9)pg/ml;EB: (13.2±2.3)μg/g vs. (23.8±2.9)μg/g; P<0.05]. Compared with control group, the levels of TNFα, IL-6, IL-1β, CXCL1, CXCL2, and VCAM-1 in sepsis group were increased. Compared with sepsis group, the above-mentioned molecular levels of pae group were significantly decreased [TNFα: (63.39±9.55)pg/ml vs. (126.54±19.17)pg/ml ;IL-6: (64.03±8.82)pg/ml vs. (85.60±9.52)pg/ml;IL-1β: (69.52±9.23)pg/ml vs. (130.45±15.10)pg/ml;CXCL1: (2 600.19±379.54)pg/ml vs. (4 903.89±533.42)pg/ml;CXCL2: (93.71±10.83)pg/ml vs. (127.24±13.92)pg/ml;VCAM-1: (112.22±13.49)pg/ml vs. (149.32±15.65)pg/ml, both P<0.05]. RT-qPCR results showed that the mRNA expressions of TNFα, IL-6, IL-1β, CXCL1, CXCL2 and VCAM-1 in the sepsis group were increased compared with the control group; Compared with sepsis group, the IL-6 mRNA (1.271±0.139 vs. 1.920±0.191, P<0.05), IL-1βmRNA (1.180±0.130 vs. 1.817±0.191, P<0.05), VCAM-1 mRNA (1.088±0.144 vs. 1.460±0.166, P<0.05) expression decreased significantly in the pae group. Compared with control group, the levels of P-p38MAPK and P-Src in sepsis group increased, and the level of VE-cadherin decreased. Compared with sepsis group, the levels of p38MAPK and P-p38MAPK in pae group were significantly decreased, and the level of VE-cadherin was increased (p38MAPK/β-actin: 1.125±0.078 vs. 1.520±0.164; P-p38MAPK protein: 1.639±0.133 vs. 2.112±0.222; both P<0.05). Conclusion: Paeoniflorin could improve the permeability of cardiac microvascular endothelium in sepsis rats and inhibit the secretion and expression of inflammation-related proteins and genes, which might be related to the inhibition of Src/VE-cadherin pathway by paeoniflorin.
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Affiliation(s)
- X F Hong
- Department of Geriatrics, Zhejiang Hospital, Hangzhou 310013,China
| | - L Li
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou 310013,China
| | - Z X Yang
- Zhejiang Provincial Key Laboratory of Geriatrics, Hangzhou 310013, China
| | - J Yan
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou 310013,China
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Tang L, Chen K, Wu C, Hong Y, Jia K, Yang ZX. Improving Semantic Analysis on Point Clouds via Auxiliary Supervision of Local Geometric Priors. IEEE Trans Cybern 2022; 52:4949-4959. [PMID: 33095729 DOI: 10.1109/tcyb.2020.3025798] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Existing deep learning algorithms for point cloud analysis mainly concern discovering semantic patterns from the global configuration of local geometries in a supervised learning manner. However, very few explore geometric properties revealing local surface manifolds embedded in 3-D Euclidean space to discriminate semantic classes or object parts as additional supervision signals. This article is the first attempt to propose a unique multitask geometric learning network to improve semantic analysis by auxiliary geometric learning with local shape properties, which can be either generated via physical computation from point clouds themselves as self-supervision signals or provided as privileged information. Owing to explicitly encoding local shape manifolds in favor of semantic analysis, the proposed geometric self-supervised and privileged learning algorithms can achieve superior performance to their backbone baselines and other state-of-the-art methods, which are verified in the experiments on the popular benchmarks.
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18
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Cui Y, Wu M, Li Z, Song X, Wang C, Yuan H, Yang ZX, Zhong J. A miniaturized mechanical antenna based on FEP/THV unipolar electrets for extremely low frequency transmission. Microsyst Nanoeng 2022; 8:58. [PMID: 35655900 PMCID: PMC9151712 DOI: 10.1038/s41378-022-00395-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 05/11/2023]
Abstract
An electret-based mechanical antenna (EBMA), which can transmit extremely low frequency (ELF) electromagnetic signals, has the advantages of miniaturization and high transmitting efficiency, with great potential applications in air, underwater, and underground communications. To improve the charge density of the electret, which is a key factor in determining the radiation performance of an EBMA, this work proposes a fluorinated ethylene propylene/terpolymer of tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride (FEP/THV) unipolar electret exhibiting negative polarity, reaching a total charge density up to −0.46 mC/m2 for each layer of electret. Long transmission distances can be achieved in sea water, soil, and air using a 3-layer-FEP/THV-based EBMA with a compact volume of 5 × 10−4 m3. As an application demonstration, binary ASCII-coded ELF information of “BUAA” is successfully transmitted with a power consumption < 5 W. ![]()
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Affiliation(s)
- Yong Cui
- School of Automation Science and Electrical Engineering, Beihang University, Beijing, 100191 China
| | - Ming Wu
- School of Automation Science and Electrical Engineering, Beihang University, Beijing, 100191 China
| | - Zhaoyang Li
- Department of Electromechanical Engineering and Centre for Artificial Intelligence and Robotics, University of Macau, Macau, SAR 999078 China
| | - Xiao Song
- School of Cyber Science and Technology, Beihang university, Beijing, 100191 China
| | - Chen Wang
- School of Automation Science and Electrical Engineering, Beihang University, Beijing, 100191 China
| | - Haiwen Yuan
- School of Automation Science and Electrical Engineering, Beihang University, Beijing, 100191 China
| | - Zhi-Xin Yang
- State Key Laboratory of Internet of Things for Smart City and Department of Electromechanical Engineering, University of Macau, Macau, SAR 999078 China
| | - Junwen Zhong
- Department of Electromechanical Engineering and Centre for Artificial Intelligence and Robotics, University of Macau, Macau, SAR 999078 China
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Huang SS, Yang ZX, Guo DY, Jia BB, Yan J. [Interleukin 33 inhibits lipopolysaccharide-induced high permeability of cardiac microvascular endothelial cells]. Zhonghua Nei Ke Za Zhi 2022; 61:559-564. [PMID: 35488608 DOI: 10.3760/cma.j.cn112138-20210625-00444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To investigate the effect of interleukin-33 (IL-33) on lipopolysaccharide (LPS)-induced permeability of rat cardiac microvascular endothelial cells (RCMECs). Methods: RCMECs were cultured in vitro to be divided into control group, LPS group, IL-33 group and LPS+IL-33 group. The effect of IL-33 on the proliferation of RCMECs was detected by cell counting reagent (CCK8). Fluorescein isothiocyanate (FITC)-dextran assay was used to evaluate the permeability of RCMECs. The expression of vascular endothelial calmodulin, ras homologous gene family (Rho) member A (RhoA) and phosphorylated Rho-associated coiled-coil-containing protein kinase (p-ROCK2) proteins were tested by western blot. High-throughput sequencing and gene ontology (GO) were performed for gene expression in LPS and LPS+IL-33 groups. Results: No significant effect of IL-33 at 10-50 ng/ml on the proliferation of RCMECs was observed (P>0.05). Compared with the control group, the permeability of RCMECs (permeability coefficient ratio 1.404±0.029 vs. 1.000±0.200, P<0.05) was significantly increased in LPS group and the expression of vascular endothelial calmodulin (relative gray value 0.429 5±0.012 9 vs. 0.594 9±0.014 2, P<0.05) was down-regulated, while the permeability of monolayers (permeability coefficient ratio, 0.948±0.013, P<0.01) was decreased in LPS+IL-33 group and the expression of vascular endothelial calmodulin (relative grayscale value 0.549 1±0.012 0, P<0.005) was up-regulated compared with the LPS group. High-throughput sequencing data revealed that the differential genes downregulated in the LPS and LPS+IL-33 groups were associated with cytoskeleton and Rho signaling pathway. Compared with the control group, RhoA (relative gray value 0.211 4±0.009 9 vs. 0.135 0±0.007 6, P<0.000 1) and p-ROCK (relative gray value 0.656 3±0.013 2 vs. 0.503 6±0.036 2, P<0.000 1) protein expression was upregulated in the LPS group. When compared with LPS group, RhoA (relative gray value 0.157 7±0.010 7, P=0.000 2), p-ROCK (relative gray value 0.427 7±0.003 8, P<0.000 1) protein expression was decreased in LPS+IL-33 group. Conclusion: IL-33 may improve LPS-induced hyperpermeability of RCMECs by inhibiting RhoA and p-ROCK protein expression in Rho/Rho-associated coiled-coil-containing protein kinase signaling pathway.
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Affiliation(s)
- S S Huang
- The Second Clinical Medical Collage, Zhejiang Chinese Medicine University, Hangzhou 310053, China Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou 310013, China
| | - Z X Yang
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou 310013, China
| | - D Y Guo
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou 310013, China
| | - B B Jia
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou 310013, China
| | - J Yan
- Department of Critical Care Medicine, Zhejiang Hospital, Hangzhou 310013, China
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Wei W, Yang ZX, Wang TY, Cui TT, Chen JS, Zhang C, Li N, Ren LQ. [Effect of moxibustion at "oppositely-located points" on neurogenic bladder after spinal cord injury and endoplasmic reticulum stress pathway in rats]. Zhongguo Zhen Jiu 2022; 42:413-418. [PMID: 35403401 DOI: 10.13703/j.0255-2930.20210929-k0003] [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: 06/14/2023]
Abstract
OBJECTIVE To observe the effect of moxibustion at oppositely-located points "Mingmen" (GV 4) and "Shenque" (CV 8) on the motor function of the hind limbs and bladder function in rats with neurogenic bladder after suprasacral spinal cord injury (SCI), so as to explore the effect of this therapy on bladder tissue apoptosis mediated by endoplasmic reticulum stress pathway. METHODS Twenty-eight female Wistar rats were randomly divided into a sham-operation group (8 rats) and a model establishment group (20 rats). Using the modified Allen's method, the spinal cord of T10 segment was injured to establish a neurogenic bladder model in the model establishment group. Sixteen rats were modeled successfully and then divided into a model group (8 rats) and a moxibustion group (8 rats). In the moxibustion group, 2 h after consciousness regaining from modeling anesthesia, moxibustion was exerted at "Shenque" (CV 8) and "Mingmen" (GV 4), 2 cones at each acupoint in one intervention. The intervention was administered once every two days and 5-time intervention was required totally. After intervention, Basso, Beattie and Bresnahan locomotor rating scale (BBB) score for the motor function of the hind limbs, and the urodynamics indexes (maximum bladder capacity, urine leakage pressure and bladder compliance) were compared among groups. HE staining method was adopted to observe the morphological changes of bladder tissue. With Western blot method and real-time PCR assay, the protein and mRNA expressions of the endoplasmic reticulum stress-related genes (glucose- regulated protein 78 [GRP78], activating transcription factor 4 [ATF4] and cysteinyl aspartate specific proteinase-12 [Caspase-12]) were determined. RESULTS The transitional epithelial cells were arranged irregularly, the bladder wall was getting thinner, and the cellular vacuolar degeneration and neutrophil infiltration were found in the model group. Whereas, compared with the model group, in the moxibustion group, the arrangement of transitional epithelial cells was clear and continuous in layers, the cellular vacuolar degeneration was mild and the infiltration presented in a small amount of neutrophil granulocytes. Compared with the sham-operation group, in the model group, the BBB score was reduced (P<0.01), the maximum bladder capacity and bladder compliance were increased (P<0.01), and the protein expression levels of GRP78, ATF4 and Caspase-12, as well as mRNA expressions were all increased (P<0.01). In comparison with the model group, in the moxibustion group, BBB score was increased (P<0.01), the maximum bladder capacity and bladder compliance were decreased (P<0.01), and the protein and mRNA expression levels of GRP78, ATF4 and Caspase-12 were all decreased (P<0.01). CONCLUSION Moxibustion at the "oppositely-located points" improves the urination function, alleviate urine retention in neurogenic bladder rats after spinal cord injury. The underlying mechanism may be related to the down-regulation of the expressions of GRP78, ATF4 and Caspase-12 in the endoplasmic reticulum stress pathway of the bladder tissues, and thus to alleviate the apoptosis of bladder tissue.
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Affiliation(s)
- Wei Wei
- Chengde Medical University, Chengde 067000, Hebei Province, China; Hebei Key Laboratory of Nerve Injury and Repair, Chengde 067000
| | - Zhi-Xin Yang
- Chengde Medical University, Chengde 067000, Hebei Province, China; Hebei Key Laboratory of Nerve Injury and Repair, Chengde 067000
| | - Tian-Yu Wang
- Chengde Medical University, Chengde 067000, Hebei Province, China; Hebei Key Laboratory of Nerve Injury and Repair, Chengde 067000
| | - Tao-Tao Cui
- Chengde Medical University, Chengde 067000, Hebei Province, China; Hebei Key Laboratory of Nerve Injury and Repair, Chengde 067000
| | - Jian-Shuang Chen
- Chengde Medical University, Chengde 067000, Hebei Province, China
| | - Chao Zhang
- Chengde Medical University, Chengde 067000, Hebei Province, China; Hebei Key Laboratory of Nerve Injury and Repair, Chengde 067000; Institue of Basic Medicine, Chengde Medical University
| | - Na Li
- Chengde Medical University, Chengde 067000, Hebei Province, China; Hebei Key Laboratory of Nerve Injury and Repair, Chengde 067000
| | - Li-Qun Ren
- Chengde Medical University, Chengde 067000, Hebei Province, China; Hebei Key Laboratory of Nerve Injury and Repair, Chengde 067000
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Jing XW, Cheng MM, Niu XY, Yang Y, Yang XL, Yang ZX, Zhang YH. [Clinical phenotypes and genetic features of epilepsy children with MBD5 gene variants]. Zhonghua Er Ke Za Zhi 2022; 60:345-349. [PMID: 35385942 DOI: 10.3760/cma.j.cn112140-20211015-00874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To summarize the phenotypes of epilepsy in patients with MBD5 gene variants. Methods: A total of 9 epileptic patients, who were treated in the Department of Pediatrics, Peking University First Hospital from July 2016 to September 2021 and detected with MBD5 gene pathogenic variants, were enrolled. The features of clinical manifestations, electroencephalogram (EEG), and neuroimaging were analyzed retrospectively. Results: Among 9 patients, 6 were male and 3 were female. Age at seizure onset ranged from 5 to 89 months. Multiple seizure types were observed, including generalized tonic clonic seizures (GTCS) in 7 patients, myoclonic seizures in 5 patients, focal seizures in 5 patients, atypical absence seizures in 3 patients, atonic seizures in 2 patients, myoclonus absence seizures in 1 patient, epileptic spasms in 1 patient, and tonic seizures in 1 patient. There were 8 patients with multiple seizure types, 2 patients with sensitivity to fever and 5 patients with clustering of seizures. Two patients had a history of status epilepticus. All patients had developmental delay before seizure onset. Nine patients had obvious language delay, and 6 patients had autism-like manifestations. Five patients had slow background activity in EEG. Interictal EEG showed abnormal discharges in 9 patients. Brain magnetic resonance imaging (MRI) was normal in all patients. A total of 9 epileptic patients carried MBD5 gene variants, all of them were de novo variants. There were MBD5 gene overall heterozygous deletion in 1 patient, large fragment deletions including MBD5 gene in 3 patients and single nucleotide variations (c.300C>A/p.C100X, c.1775delA/p.N592Tfs*29, c.1759C>T/p.Q587X, c.150_151del/p.Lys51Asnfs*6, c.113+1G>C) in 5 patients. The age at last follow-up ranged from 2 years and 9 months to 11 years and 11 months. At the last follow-up, 2 patients were seizure-free for more than 11 months to 4 years 6 months, 7 patients still had seizures. Conclusions: The initial seizure onset in patients with MBD5 gene variants usually occurs in infancy. Most patients have multiple seizure types. The seizures may be fever sensitive and clustered. Developmental delays, language impairments, and autistic behaviors are common. MBD5 gene variants include single nucleotide variations and fragment deletions. Epilepsy associated with MBD5 gene variants is usually refractory.
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Affiliation(s)
- X W Jing
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - M M Cheng
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - X Y Niu
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - X L Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Z X Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y H Zhang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
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Affiliation(s)
- T Ma
- Research Institute of Resource Insects, Chinese Academy of Forestry, Kunming 650233, Yunnan, China
| | - Z X Yang
- Research Institute of Resource Insects, Chinese Academy of Forestry, Kunming 650233, Yunnan, China
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Yang ZX, Rong HJ, Wong PK, Angelov P, Vong CM, Chiu CW, Yang ZX. A Novel Multiple Feature-Based Engine Knock Detection System using Sparse Bayesian Extreme Learning Machine. Cognit Comput 2022. [DOI: 10.1007/s12559-021-09945-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zhao YJ, Xu JQ, Bai W, Sun HL, Shui B, Yang ZX, Huang J, Smith RD, Hu YJ, Xiang YT. COVID-19 prevention and control strategies: learning from the Macau model. Int J Biol Sci 2022; 18:5317-5328. [PMID: 36147478 PMCID: PMC9461669 DOI: 10.7150/ijbs.70177] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 07/16/2022] [Indexed: 11/09/2022] Open
Abstract
Background: Macau is a densely populated international tourist city. Compared to most tensely populated countries/territories, the prevalence and mortality of COVID-19 in Macau are lower. The experiences in Macau could be helpful for other areas to combat the COVID-19 pandemic. This article introduced the endeavours and achievements of Macau in combatting the COVID-19 pandemic. Method: Both qualitative and quantitative analysis methods were used to explore the work, measures, and achievements of Macau in dealing with the COVID-19 pandemic. Results: The results revealed that Macau has provided undifferentiated mask purchase reservation services, COVID-19 vaccination services to all residents and non-residents in Macau along with delivering multilingual services, in Chinese, English and Portuguese, to different groups of the population. To facilitate the travels of people, business and trades between Macau and mainland China, the Macau government launched the Macau Health Code System, which uses the health status declaration, residence history declaration, contact history declaration of the declarant to match various relevant backend databases within the health authority and provide a risk-related colour code operations. The Macau Health Code System connects to the Chinese mainland's own propriety health code system seamlessly, whilst effectively protecting the privacy of the residents. Macau has also developed the COVID-19 Vaccination Appointment system, the Nucleic Acid Test Appointment system, the Port and Entry/Exit Quarantine system, the medical and other supporting systems. Conclusion: The efforts in Macau have achieved remarkable results in COVID-19 prevention and control, effectively safeguarding the lives and health of the people and manifesting the core principle of “serving the public”. The measures used are sustainable and can serve as an important reference for other countries/regions.
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Wang D, Yang ZX. Self-supervised Point Cloud Understanding via Mask Transformer and Contrastive Learning. IEEE Robot Autom Lett 2022. [DOI: 10.1109/lra.2022.3224370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Di Wang
- University of Macau, State Key Laboratory of Internet of Things for Smart City, China
| | - Zhi-Xin Yang
- University of Macau, State Key Laboratory of Internet of Things for Smart City, China
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Pan NL, Liao JX, Huang MY, Zhang YQ, Chen JX, Zhang ZW, Yang ZX, Long XE, Wu XT, Sun J. Lysosome-targeted ruthenium(II) complexes induce both apoptosis and autophagy in HeLa cells. J Inorg Biochem 2022; 229:111729. [DOI: 10.1016/j.jinorgbio.2022.111729] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 01/10/2022] [Accepted: 01/12/2022] [Indexed: 12/19/2022]
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Xiao Y, Dai MX, Zhang GQ, Yang ZX, He YM, Zhan FD. Effects of the Dark Septate Endophyte (DSE) Exophiala pisciphila on the Growth of Root Cell Wall Polysaccharides and the Cadmium Content of Zea mays L. under Cadmium Stress. J Fungi (Basel) 2021; 7:jof7121035. [PMID: 34947018 PMCID: PMC8708371 DOI: 10.3390/jof7121035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 11/06/2021] [Revised: 11/27/2021] [Accepted: 11/30/2021] [Indexed: 02/06/2023] Open
Abstract
This paper aims to investigate the mechanism by which dark septate endophytes (DSEs) enhance cadmium (Cd) tolerance in there host plants. Maize (Zea mays L.) was inoculated with a DSE, Exophiala pisciphila, under Cd stress at different concentrations (0, 5, 10, and 20 mg·kg−1). The results show that, under 20 mg/kg Cd stress, DSE significantly increased maize biomass and plant height, indicating that DSE colonization can be utilized to increase the Cd tolerance of host plants. More Cd was retained in DSE-inoculated roots, especially that fixed in the root cell wall (RCW). The capability of DSE to induce a higher Cd holding capacity in the RCW is caused by modulation of the total sugar and uronic acid of DSE-colonized RCW, mainly the pectin and hemicellulose fractions. The fourier-transform spectroscopy analysis results show that carboxyl, hydroxyl, and acidic groups are involved in Cd retention in the DSE-inoculated RCW. The promotion of the growth of maize and improvement in its tolerance to Cd due to DSEs are related to restriction of the translocation of Cd from roots to shoots; resistance of Cd uptake Cd inside cells; and the increase in RCW-integrated Cd through modulating RCW polysaccharide components.
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Cao JN, Zuo YH, Wang HH, Feng WD, Yang ZX, Ma J, Du HR, Gao L, Zhang Z. Single-pixel neural network object classification of sub-Nyquist ghost imaging. Appl Opt 2021; 60:9180-9187. [PMID: 34624000 DOI: 10.1364/ao.438392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
A single-pixel neural network object classification scenario in the sub-Nyquist ghost imaging system is proposed. Based on the neural network, objects are classified directly by bucket measurements without reconstructing images. Classification accuracy can still be maintained at 94.23% even with only 16 measurements (less than the Nyquist limit of 1.56%). A parallel computing scheme is applied in data processing to reduce the object acquisition time significantly. Random patterns are used as illumination patterns to illuminate objects. The proposed method performs much better than existing methods for both binary and grayscale images in the sub-Nyquist condition, which is also robust to environment noise turbulence. Benefiting from advantages of ghost imaging, it may find applications for target recognition in the fields of remote sensing, military defense, and so on.
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Liu WW, Yang Y, Niu XY, Cheng MM, Wang S, Wu Y, Yang ZX, Liu XY, Cai LX, Jiang YW, Zhang YH. [Genotype and phenotype of children with DEPDC5 gene variants related epilepsy]. Zhonghua Er Ke Za Zhi 2021; 59:859-864. [PMID: 34587683 DOI: 10.3760/cma.j.cn112140-20210323-00249] [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 summarize the clinical characteristics and the features of electroencephalograph (EEG) of children with DEPDC5 gene variants related epilepsy. Methods: The clinical data, gene variation, EEG and head magnetic resonance image (MRI) of 20 epileptic children with DEPDC5 gene variants admitted to Department of Pediatrics, Peking University First Hospital from May 2017 to November 2020 were retrospectively analyzed. Results: Twenty patients with heterozygous DEPDC5 gene variants were enrolled, 8 of 20 patients were nonsense variants, 6 were missense variants, 3 were frame-shift variants, 2 were splicing variants, and 1 was large fragment deletion. Sixteen cases had hereditary variation and 4 had de novo variation. Fifteen of variations were novel. Nine were male, while 11 were female. Their latest follow-up age ranged from 10 months to 13 years and one month.The epilepsy onset age ranged from 3 hours to 11 years and 3 months, the median age was 10.5 months. Twelve (60%) patients had developmental delay. Nineteen patients had focal seizures, 7 had epileptic spasms, 1 had multiple seizure types including tonic, atypical absence, dystonic and myoclonic seizures. Epileptic form discharges were observed in 18 patients during the interictal phase, and 11 were focal discharges, 7 were multifocal discharges. Ten (50%) patients had abnormal brain MRI, including focal cortical dysplasia in 5 patients, undefined malformation of cortical development in 4 patients, hemimegalencephaly in 1 patient. Four patients were diagnosed as West syndrome and one patient was diagnosed as Lennox-Gastaut syndrome. Fourteen (70%) patients were diagnosed as drug-resistant epilepsy. Four patients became seizure-free by treatment with anti-epileptic drugs. Three children were treated with surgery, and 2 of them became seizure-free, 1 had more than 75% reduction in seizures. Conclusions: DEPDC5 gene variant epilepsy is inherited with incomplete penetrance and focal seizure is the major seizure type. However, epileptic spasms, generalized seizures can also be observed. Half of the patients brain malformations. Most of the patients are drug-resistant epilepsy. Patients with clear epileptogenic zones can be treated with surgery. Treatment-resistant patients are more likely to be complicated with developmental delay.
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Affiliation(s)
- W W Liu
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - X Y Niu
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - M M Cheng
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - S Wang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y Wu
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Z X Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - X Y Liu
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - L X Cai
- Pediatric Epilepsy Center, Peking University First Hospital, Beijing 100034, China
| | - Y W Jiang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y H Zhang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
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Chen JY, Yang Y, Niu XY, Zhang J, Chen Y, Yang XL, Yang ZX, Jiang YW, Zhang YH. [Genotypes and clinical features of neonatal-onset genetic epilepsy in 141 patients]. Zhonghua Er Ke Za Zhi 2021; 59:767-771. [PMID: 34645217 DOI: 10.3760/cma.j.cn112140-20210206-00113] [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 summarize the genotypes and clinical features of neonatal-onset genetic epilepsy. Methods: Patients (114 cases) with identified gene variants were collected from May 2013 to May 2019 in Peking University First Hospital, retrospectively. The genotype, clinical, electroencephalographic and neuroimaging characteristics were analyzed. Results: A total of 141 neonatal-onset epilepsy patients with identified gene variants were enrolled, including 76 males and 65 females and involving 33 epilepsy genes. Top five genes were KCNQ2 (56 cases), SCN2A (25 cases), STXBP1 (9 cases), CDKL5 (8 cases) and KCNT1 (6 cases), accounting for 73.8% (104/141). The age of seizure onset was 3(1-28) days of age, 71.6% (101/141) were within 1 week of age. The age of genetic diagnosis was 4 months (1 month to 13 years) of age. A total of 130 patients presented focal seizures; 47 patients presented epileptic spasms. Other seizure types included generalized tonic-clonic seizures, clonic seizures, myoclonic seizures, tonic seizures and absence seizures. Fifty-eight patients experienced multiple seizure types. The results of video-electroencephlogram (VEEG) were abnormal in 127 patients and in 62 patients clinical seizures were captured. Global developmental delay was presented in 122 patients. Epilepsy syndromes were diagnosed in 59 patients. Thirteen patients were diagnosed as Ohtahara syndrome (OS), 9 as epilepsy of infancy with migrating focal seizures (EIMFS), 17 as West syndrome (WS), 4 as OS developed to WS, 9 as benign neonatal epilepsy (BNE), 2 as benign familiar neonatal-infantile epilepsy (BFNIE), 2 as benign infantile epilepsy (BIE) and 3 as benign familial infantile epilepsy (BFIE). Sixty-seven patients were diagnosed as unclassified early infantile epileptic encephalopathy (EIEE), 13 patients could not be diagnosed as any epilepsy syndrome, and 2 patients were diagnosed as pyridoxine-dependent epilepsy. Forty-six patients had abnormal neuroimaging including cortical atrophy, corpus callosum dysplasia and cerebellar atrophy, involving 19 genes. Conclusions: Neonatal-onset epilepsy is related to many different genes. Seizure onset age of most patients is within one week after birth. Focal seizures and epileptic spasms are more common. Some patients show abnormal neuroimaging.
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Affiliation(s)
- J Y Chen
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - X Y Niu
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - J Zhang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y Chen
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - X L Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Z X Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y W Jiang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y H Zhang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
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Guan H, Yang ZX, Guan CD, Zhao GY, Cui JG, Hu FH, Yuan JS, Qiao SB. [Five-year clinical outcomes of patients with in-stent chronic total occlusion undergoing percutaneous coronary intervention]. Zhonghua Xin Xue Guan Bing Za Zhi 2021; 49:770-775. [PMID: 34404185 DOI: 10.3760/cma.j.cn112148-20210321-00252] [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: 06/13/2023]
Abstract
Objective: To evaluate the safety and long-term clinical efficacy of percutaneous coronary intervention (PCI) in patients with in-stent chronic total occlusion (IS-CTO) lesions. Metheds: This is a retrospective analysis. Patients with IS-CTO who underwent PCI in Fuwai hospital from January 2010 to December 2013 were enrolled. A total of 212 patients who met the inclusion criteria were included in the IS-CTO group, 212 matched patients with primary CTO lesions were included in the de novo CTO group. The incidence of complications and the success rate of PCI were compared between the two groups. Successful PCI was defined as successfully implantation of stent(s) at target CTO lesions. The primary endpoint was defined as a composite event of cardiac death and myocardial infarction (MI). Secondary endpoints including PCI success, all-cause death, cardiac death, MI, target vessel related MI, revascularization, target vessel revascularization, heart failure for rehospitalization. The patients were followed up for 5 years after PCI. Results: A total of 424 cases were included. The mean age was (57.8±10.5) years, there were 364 males in this cohort. The left ventricular ejection fraction was significantly lower ((58.7±9.2)% vs. (61.0±7.7)%, P=0.01) and the SYNTAX scores was significantly higher (19.4±8.3 vs. 15.3±10.0, P<0.01) in IS-CTO group than that in de novo CTO group. The proportion of patients with target CTO lesions in left anterior descending artery was significantly higher (42.9% (50/212) vs. 23.6% (91/212), P<0.01) in IS-CTO group than that in de novo CTO group. The rate of successful PCI (71.7% (152/212) vs. 69.8% (148/212), P=0.70) and complication (40.6% (86/212) vs. 36.3% (77/212), P=0.37) was similar between the two groups. The incidence of primary endpoint at 5 years was significantly higher in IS-CTO group (10.8% (23/212) vs. 4.7% (10/212), P=0.02), which was driven by higher incidence of MI (9.0% (19/212) vs. 4.2% (9/212), P=0.05). There were a trend of higher secondary endpoints in IS-CTO group (all P>0.05). Conclusion: The safety and effectiveness of PCI are acceptable in patients with IS-CTO, but the risk of long-term cardiac death and MI is higher among patients with IS-CTO as compared to patients with primary CTO lesions.
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Affiliation(s)
- H Guan
- Coronary Heart Disease Center, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Z X Yang
- Department of Cardiology, Eighth Clinical Medical College of Shanxi Medical University & Yuncheng Central Hospital, Yuncheng 044400, China
| | - C D Guan
- Catheterization Laboratories, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - G Y Zhao
- Coronary Heart Disease Center, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - J G Cui
- Coronary Heart Disease Center, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - F H Hu
- Coronary Heart Disease Center, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - J S Yuan
- Coronary Heart Disease Center, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - S B Qiao
- Coronary Heart Disease Center, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
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Li XY, Guan QX, Shang YZ, Wang YH, Lv SW, Yang ZX, Wang R, Feng YF, Li WN, Li YJ. Metal-organic framework IRMOFs coated with a temperature-sensitive gel delivering norcantharidin to treat liver cancer. World J Gastroenterol 2021; 27:4208-4220. [PMID: 34326620 PMCID: PMC8311525 DOI: 10.3748/wjg.v27.i26.4208] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/27/2021] [Accepted: 05/27/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Norcantharidin (NCTD) is suitable for the treatment of primary liver cancer, especially early and middle primary liver cancer. This compound can reduce tumors and improve immune function. However, the side effects of NCTD have limited its application. There is a marked need to reduce the side effects and increase the efficacy of NCTD.
AIM To develop a nanomaterial carrier, NCTD-loaded metal-organic framework IRMOF-3 coated with a temperature-sensitive gel (NCTD-IRMOF-3-Gel), aiming to improve the anticancer activity of NCTD and reduce the drug dose.
METHODS NCTD-IRMOF-3-Gel was obtained by a coordination reaction. The apparent characteristics and in vitro release of NCTD-IRMOF-3-Gel were investigated. Cell cytotoxicity assays, flow cytometry, and apoptosis experiments in mouse hepatoma (Hepa1-6) cells were used to determine the anti-liver cancer activity of NCTD-IRMOF-3-Gel in in vitro models.
RESULTS The particle size of NCTD-IRMOF-3-Gel was 50-100 nm, and the particle size distribution was uniform. The release curve showed that NCTD-IRMOF-3-Gel had an obvious sustained-release effect. The cytotoxicity assays showed that the free drug NCTD and NCTD-IRMOF-3-Gel treatments markedly inhibited Hepa1-6 cell proliferation, and the inhibition rate increased with increasing drug concentration. By flow cytometry, NCTD-IRMOF-3-Gel was observed to block the Hepa1-6 cell cycle in the S and G2/M phases, and the thermosensitive gel nanoparticles may inhibit cell proliferation by inducing cell cycle arrest. Apoptosis experiments showed that NCTD-IRMOF-3-Gel induced the apoptosis of Hepa1-6 cells.
CONCLUSION Our results indicated that the NCTD-IRMOF-3-Gel may be beneficial for liver cancer disease treatment.
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Affiliation(s)
- Xiu-Yan Li
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Qing-Xia Guan
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Yu-Zhou Shang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Yan-Hong Wang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Shao-Wa Lv
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Zhi-Xin Yang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Rui Wang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Yu-Fei Feng
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Wei-Nan Li
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Yong-Ji Li
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin 150040, Heilongjiang Province, China
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Li Z, Lu JS, Liu S, Wang R, Xu Q, Yu YZ, Yang ZX. Recombinant L-HN Fusion Antigen Derived from the L and HN Domains of Botulinum Neurotoxin B Stimulates a Protective Antibody Response Against Active Neurotoxin. Neurotox Res 2021; 39:1044-1053. [PMID: 33616873 DOI: 10.1007/s12640-021-00337-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 01/25/2021] [Accepted: 01/27/2021] [Indexed: 01/04/2023]
Abstract
Botulinum neurotoxin (BoNT) is a neurotoxin produced by Clostridium botulinum in an anaerobic environment. BoNT is the most toxic protein among bacteria, animals, plants, and chemical substances reported to date. BoNTs are 150 kDa proteins composed of three major functional domains: catalytic (L domain, 50 kDa), translocation (HN domain, 50 kDa), and receptor-binding (Hc domain, 50 kDa) domains. Most studies have focused on the use of the Hc domain as an antigen because it is capable of generating robust protective immunity and contains some functional neutralizing epitopes. In the present study, we produced and characterized a recombinant L-HN fusion fragment of the parent BoNT/B (BL-HN) composed of L and HN domains with a deletion in the Hc domain (BHc). When the BL-HN protein was expressed in E. coli, it retained its stable structure and antigenicity. As a vaccine antigen, the recombinant BL-HN protein was found to induce sufficient protection against native BoNT/B in a mouse model. The BL-HN subunit vaccine could also induce a strong humoral immune response and generate sufficient neutralizing antibodies in immunized mice. Therefore, BL-HN may retain the native neurotoxin structure and critical epitopes responsible for inducing serum neutralizing antibodies. Studies of the dose-dependent immunoprotective effects further confirmed that the BL-HN antigen could provide potent protective immunity. This finding suggests that BL-HN can play an important role in immune protection against BoNT/B. Therefore, the BL-HN fusion fragment provides an excellent platform for the design of recombinant botulinum vaccines and neutralizing antibodies.
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Affiliation(s)
- Zhen Li
- Beijing Institute of Biotechnology, Beijing, 100071, China.,Institute of Life Science and Biotechnology, Beijing Jiaotong University, Beijing, 100044, China
| | - Jian-Sheng Lu
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Shan Liu
- PLA Rocket Force Characteristic Medical Center, Beijing, 100088, China
| | - Rong Wang
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Qing Xu
- Institute of Life Science and Biotechnology, Beijing Jiaotong University, Beijing, 100044, China
| | - Yun-Zhou Yu
- Beijing Institute of Biotechnology, Beijing, 100071, China.
| | - Zhi-Xin Yang
- Beijing Institute of Biotechnology, Beijing, 100071, China.
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Li X, Dai WR, Liu WF, Yang ZX, Xie L, Wu ZY. [Study on changes of pulmonary function in patients with pneumoconiosis in three years]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2021; 38:891-894. [PMID: 33406545 DOI: 10.3760/cma.j.cn121094-20200212-00055] [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 characteristics of pulmonary function changes and its possible influencing factors in patients with pneumoconiosis. Methods: In December 2019, pneumoconiosis patients hospitalized in four departments of occupational diseases in Hunan Occupational Disease Prevention and Control Hospital from December 2015 to December 2016 were selected as subjects. Lung function including forced vital capacity (FVC) , FVC%, forced expiratory volume in one second (FEV1) , FEV1%, forced expiratory volume in one second / forced vital capacity (FEV1/FVC) , diffusion capacity of the lung foe carbon monoxide% (DLCO%) 、maximal expiratory rlow 75% (MEF75%) , maximal expiratory rlow 50% (MEF50%) and maximal expiratory rlow 25% (MEF25%) were tested, and collect their age, occupation history, smoking history and Chronic Obstructive Pulmonary Disease Self Rating Questionnaire (CAT) score. They were followed up after 3 years to analyze the 3-year decline rates of lung function indicators and their relationship with stage of pneumoconiosis, age, smoking index, baseline values of lung function and CAT score. Results: 265 cases were studied effectively. After 3 years, the values of 9 lung function indicators of pneumoconiosis patients were significantly lower than those of 3 years ago (P<0.05) . The decline rates of FEV1%, FEV1/FVC, MEF75%, MEF50% and MEF25% were positively correlated with the stage of pneumoconiosis (r=0.250, 0.290, 0.219, 0.280, 0.141, P<0.05) . The decline rates of FEV1% and MEF75% were positively correlated with smoking index (r=0.148, 0.152, P<0.05) . The decline rates of DLCO% and MEF25% were positively correlated with the baseline value of initial pulmonary function (r=0.276, 0.153, P<0.05) , while the decline rates of FEV1%, FEV1/FVC and MEF50% were negatively correlated with the baseline values of initial pulmonary function (r=-0.215, -0.146, -0.214, P<0.05) . The decline rates of FVC%, FEV1%, MEF75% and MEF50% were positively correlated with the changes of CAT scores (r=0.147, 0.208, 0.210, 0.196, P<0.05) . Logistic regression analysis showed that old age and high initial value of DLCO% were the risk factor for the decline of DLCO% (OR=1.105、1.078, P<0.05) .High smoking index was the risk factors for the decline of MEF75% (OR=1.016, P<0.05) . High stage and the increase of CAT score were the risk factors for the decline of MEF50% (OR=1.548, 1.162, P<0.05) . High initial value of MEF25% was the risk factor for the decline of MEF25% (OR=1.010, P<0.05) . Conclusion: The pulmonary function index of pneumoconiosis patients declined significantly in 3 years. The stage of pneumoconiosis, age, smoking index and degree of pulmonary function damage were related to the decline rate of pulmonary function.
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Affiliation(s)
- X Li
- Hunan Occupational Disease Prevention and Control Hospital, Changsha 410007, China
| | - W R Dai
- Hunan Occupational Disease Prevention and Control Hospital, Changsha 410007, China
| | - W F Liu
- Hunan Occupational Disease Prevention and Control Hospital, Changsha 410007, China
| | - Z X Yang
- Hunan Occupational Disease Prevention and Control Hospital, Changsha 410007, China
| | - L Xie
- Hunan Occupational Disease Prevention and Control Hospital, Changsha 410007, China
| | - Z Y Wu
- Hunan Occupational Disease Prevention and Control Hospital, Changsha 410007, China
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Liu FJ, Shi DY, Li ZY, Lu JS, Wang R, Pang XB, Yang ZX, Yu YZ. Evaluation of a recombinant tetanus toxin subunit vaccine. Toxicon 2020; 187:75-81. [PMID: 32889026 DOI: 10.1016/j.toxicon.2020.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/30/2020] [Accepted: 08/03/2020] [Indexed: 10/23/2022]
Abstract
Tetanus is an acute, fatal disease caused by exotoxin produced by Clostridium tetani. The current vaccine against tetanus is based on inactivated tetanus toxin (TeNT). To develop a recombinant TeNT vaccine suitable for replacement of full-length tetanus toxoid (TT) vaccine for use in humans, a recombinant non-tagged isoform of the Hc domain of the tetanus toxin (THc) was expressed in Escherichia coli and purified by sequential chromatography steps. The immunogenicity and protective effect of the THc antigen were explored and compared with those of TT in Balb/c mice. The THc-based subunit vaccine provided complete protection against TeNT challenge following a high dosage as a toxoid vaccine. While the anti-THc and neutralising antibody titres were higher for the THc-based vaccine than the TT vaccine because protective epitopes are located on the THc domain. Frequency- and dose-dependent immunoprotection were also observed in THc-immunised mice. Mice immunised with one injection of 1 μg or 4 μg THc antigen were completely protected against 102 or 103 50% mouse lethal dose (LD50) of TeNT, respectively. Furthermore, the THc protein was found to recognise and bind to ganglioside GT1b in a dose-dependent manner, and anti-THc sera antibodies also inhibited binding between THc and GT1b. Antigen on the form of recombinant non-tagged THc domain expressed in E. coli achieved strong immunoprotective potency, suggesting that it could be developed into a candidate subunit vaccine against tetanus as an alternative to the current TT vaccine.
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Affiliation(s)
- Fu-Jia Liu
- Beijing Institute of Biotechnology, Beijing, 100071, China; Pharmaceutical College, Henan University, Kaifeng, 475001, China
| | - Dan-Yang Shi
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Zhi-Ying Li
- Beijing Institute of Biotechnology, Beijing, 100071, China; Pharmaceutical College, Henan University, Kaifeng, 475001, China
| | - Jian-Sheng Lu
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Rong Wang
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Xiao-Bin Pang
- Pharmaceutical College, Henan University, Kaifeng, 475001, China.
| | - Zhi-Xin Yang
- Beijing Institute of Biotechnology, Beijing, 100071, China.
| | - Yun-Zhou Yu
- Beijing Institute of Biotechnology, Beijing, 100071, China.
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37
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Yang ZX, He XT, Wen SR. Closed-Form Solution and Experimental Verification for the Axisymmetric Deformation Problem of Blistering Circular Thin Polymer Films under Uniformly Distributed Gas Pressure. Polymers (Basel) 2020; 12:E1130. [PMID: 32423097 PMCID: PMC7285052 DOI: 10.3390/polym12051130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 05/10/2020] [Accepted: 05/12/2020] [Indexed: 12/26/2022] Open
Abstract
The existing studies indicate that the measurement formulas used in blister test techniques, which are used to measure the mechanical properties of thin-film/substrate systems, are usually given based on an approximation-that is, the applied direction of the uniformly distributed transverse load is always vertical, while the applied direction of the uniformly distributed gas pressure is always perpendicular to the surface of the thin film. This approximation will lead to a large measurement error. In this study, we obtained the analytical solution to the problem of axisymmetric deformation of blistering circular thin polymer films under the action of uniformly distributed gas pressure via the power series method. An example is given to illustrate the error caused by the approximation mentioned above, and the validity of the solution presented here is verified. The result shows that the chance of error caused by the approximation increases with the increase in the applied load, and it far exceeds the allowable error of measurement when the applied load is relatively large. In addition, the related experiments of the blistering circular thin polymer film under uniformly distributed gas pressure are carried out, and the experimental results are compared with the theoretical results. The comparison results show that the analytical solution given in this paper is correct. The solution presented here is of great significance to improve the measurement accuracy of the blister test technique.
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Affiliation(s)
- Zhi-Xin Yang
- School of Civil Engineering, Chongqing University, Chongqing 400045, China; (Z.-X.Y.); (S.-R.W.)
| | - Xiao-Ting He
- School of Civil Engineering, Chongqing University, Chongqing 400045, China; (Z.-X.Y.); (S.-R.W.)
- Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing University, Ministry of Education, Chongqing 400045, China
| | - Si-Rui Wen
- School of Civil Engineering, Chongqing University, Chongqing 400045, China; (Z.-X.Y.); (S.-R.W.)
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38
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Wang XQ, Ye PT, Bai MJ, Miu WH, Yang ZX, Duan SY, Li TT, Li Y, Yang XD. Synthesis and biological activity of new bisbenzofuran-imidazolium salts. Bioorg Med Chem Lett 2020; 30:127210. [PMID: 32359853 DOI: 10.1016/j.bmcl.2020.127210] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/20/2020] [Accepted: 04/23/2020] [Indexed: 02/07/2023]
Abstract
A series of novel bisbenzofuran-imidazolium salts were designed and prepared. The in vitro antitumor activity of these derivatives was evaluated against a panel of human tumor cell lines (A549, HL-60, MCF-7, SMMC-7721 and SW480). Results demonstrated that 2-methyl-benzimidazole ring and substitution of the imidazolyl-3-position with a 4-methoxyphenacyl or 2-naphthylacyl substituent were important for promoting cytotoxic activity. Notably, compound 23 was found to be the most potent compound with IC50 values of 0.64-1.47 μM against five human tumor cell lines, and exhibited higher selectivity to MCF-7 and SW-480 cell lines with IC50 values 15.3-fold and 9.1-fold lower than DDP.
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Affiliation(s)
- Xue-Quan Wang
- Key Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan Province, School of Science, Honghe University, Mengzi, Yunnan 661100, PR China
| | - Ping-Ting Ye
- Key Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan Province, School of Science, Honghe University, Mengzi, Yunnan 661100, PR China
| | - Meng-Jiao Bai
- Key Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan Province, School of Science, Honghe University, Mengzi, Yunnan 661100, PR China
| | - Wei-Hang Miu
- Key Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan Province, School of Science, Honghe University, Mengzi, Yunnan 661100, PR China
| | - Zhi-Xin Yang
- Key Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan Province, School of Science, Honghe University, Mengzi, Yunnan 661100, PR China
| | - Su-Yue Duan
- Key Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan Province, School of Science, Honghe University, Mengzi, Yunnan 661100, PR China
| | - Tian-Tian Li
- Department of Soil and Water Science, University of Florida, 2181 McCarty Hall A, Gainesville, FL 32611-0290, USA
| | - Yan Li
- State Key Laboratory for Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650204, PR China.
| | - Xiao-Dong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China.
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Zhang PB, Yang ZX. A new learning paradigm for random vector functional-link network: RVFL+. Neural Netw 2020; 122:94-105. [DOI: 10.1016/j.neunet.2019.09.039] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 08/12/2019] [Accepted: 09/30/2019] [Indexed: 10/25/2022]
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Gong P, Xue J, Jiao XR, Zhang YH, Yang ZX. [Genotype and phenotype of children with KCNA2 gene related developmental and epileptic encephalopathy]. Zhonghua Er Ke Za Zhi 2020; 58:35-40. [PMID: 31905474 DOI: 10.3760/cma.j.issn.0578-1310.2020.01.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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 genotype and phenotype of children with KCNA2 gene related developmental and epileptic encephalopathy (DEE). Methods: Clinical data including the manifestations and electroencephalogram of 8 children with KCNA2 variants treated in the Department of Pediatrics, Peking University First Hospital from March 2017 to June 2019 were collected and analyzed retrospectively. Results: Among the 8 epileptic patients with KCNA2 variants, 5 were males and 3 were females. The age of onset was from 1 day to 11 months. The age at last follow-up ranged from 4 months to 86 months. Two variants including c.1214C>T (loss-of-function) and c.1120A>G (gain-and loss-of-function) were identified. The variant of c.1214C>T was found in six patients (case 1-6). For these patients, the age of onset was from 5 to 11 months and they were characterized by multiple seizure types. All had focal seizures and had normal development before seizure onset with developmental regression after seizure onset. The first electroencephalogram showed epileptic discharges in Rolandic region in two, epileptic discharges in Rolandic region combined with generalized discharge in one, generalized discharge with posterior predominance in two (combined with or transferred to Rolandic region during the course) and epileptic discharges in posterior region combined with generalized discharge in one. And in 5 of them the Rolandic discharges developed into epileptic electrical status (ESES) during sleep. All the six patients were still treated with a combination of multiple antiepileptic drugs. Two of them had seizure controlled at 80 months and 68 months, respectively. The variant of c.1120A>G were identified in two of eight patients (case 7 and 8) and they had seizure onset on the 1st day after birth. Their epileptic seizures were frequent and difficult to control. They had remarkably developmental delay and microcephaly since birth. One case (case 8) had a wide forehead. They had frequent seizures up to the last follow-up. In case 7, the early electroencephalogram showed epileptic discharges in temporal region, and interictal electroencephalogram at 3 months of age showed multifocal discharge with posterior and temporal region predominance. In case 8, the early electroencephalogram was normal and electroencephalogram showed burst suppression at 2 months of age, and it developed epileptiform discharge in posterior region at 1 year of age. Conclusions: KCNA2 gene variants can lead to DEE with multiple seizures types. Among them, loss-of-function c.1214C>T is the most common, and these patients have seizure onset at infancy with Rolandic discharges tended to develop into to ESES pattern. The variant of c.1120A>G is a gain-of- and loss-of-function variant, patients with c.1120A>G have seizure onset in neonatal period, the phenotype overlaps with the former but is more severe.
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Affiliation(s)
- P Gong
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
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Wang XQ, Chen XB, Ye PT, Yang ZX, Bai MJ, Duan SY, Li Y, Yang XD. Synthesis and biological evaluation of novel 3-benzylcoumarin-imidazolium salts. Bioorg Med Chem Lett 2019; 30:126896. [PMID: 31882296 DOI: 10.1016/j.bmcl.2019.126896] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 12/06/2019] [Accepted: 12/07/2019] [Indexed: 12/18/2022]
Abstract
A series of novel 3-benzylcoumarin-imidazolium salts were prepared and evaluated in vitro against a panel of human tumor cell lines. The results showed that the existence of 5,6-dimethyl-benzimidazole ring and substitution of the imidazolyl-3-position with a naphthylacyl group were vital for modulating cytotoxic activity. Notably, compound 38 was found to be the most potent derivative with IC50 values of 2.04-4.51 μM against five human tumor cell lines, while compound 34 were more selective to SW-480 cell lines with IC50 value 40.0-fold lower than DDP. Mechanism of action studies indicated that compound 38 can cause the G0/G1 phase cell cycle arrest and apoptosis in SMMC-7721 cell lines.
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Affiliation(s)
- Xue-Quan Wang
- Key Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan Province, School of Science, Honghe University, Mengzi, Yunnan 661100, PR China
| | - Xue-Bing Chen
- Key Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan Province, School of Science, Honghe University, Mengzi, Yunnan 661100, PR China
| | - Ping-Ting Ye
- Key Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan Province, School of Science, Honghe University, Mengzi, Yunnan 661100, PR China
| | - Zhi-Xin Yang
- Key Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan Province, School of Science, Honghe University, Mengzi, Yunnan 661100, PR China
| | - Meng-Jiao Bai
- Key Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan Province, School of Science, Honghe University, Mengzi, Yunnan 661100, PR China
| | - Su-Yue Duan
- Key Laboratory of Natural Pharmaceutical and Chemical Biology of Yunnan Province, School of Science, Honghe University, Mengzi, Yunnan 661100, PR China
| | - Yan Li
- State Key Laboratory for Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650204, PR China.
| | - Xiao-Dong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, PR China.
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Gong P, Xue J, Qian P, Yang HP, Zhang YH, Jiang YW, Yang ZX. [Electroclinical characteristics of epilepsy children with midline epileptiform discharges related epileptic negative myoclonus as the first symptom]. Zhonghua Er Ke Za Zhi 2019; 57:943-949. [PMID: 31795561 DOI: 10.3760/cma.j.issn.0578-1310.2019.12.009] [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: 06/10/2023]
Abstract
Objective: To investigate the electroclinical findings in epilepsy children with epileptic negative myoclonus (ENM) restricted to the lower limb as the first seizure type. Methods: Each retrieved electroencephalogram record performed between March 2011 and March 2018 at the Department of Pediatrics of Peking University First Hospital was searched with "midline" . There were 302 records of 175 patients with "benign" or "functional" midline spikes. A retrospective review of each patient's hospital record was performed. Thirteen patients had ENM restricted to the lower limb as the first seizure type. The clinical and electroencephalogram characteristics of them were analyzed. Results: Thirteen patients manifested ENM restricted to the lower limb as the first seizure type, diagnosed as benign childhood focal epilepsy with vertex spikes (BEVS). Six patients had ENM as the first and only seizure type during the short-time follow-up. Among them, there were 1 male and 5 females. The age at seizure onset was (2.5±0.7) years. One of them had electrical status epilepticus during sleep (ESES) identified on electroencephalogram at theage of 4 years and 8 months. The last follow-up age was (3.8±1.5) years. The remaining 7 patients developed nocturnal focal motor seizures. Among them, there were 4 males and 3 females. The age at seizure onset was (3.5±0.7) years. Two of them were diagnosed as BEVS evolving into benign childhood epilepsy with centrotemporal spikes (BECTS) and 5 were diagnosed as BEVS concurring with BECTS. The age at focal seizures was (4.1±0.6) years. The interval ranged from 1 month to 1 years. Six of 7 patients had electrical ESES with the age of (5.2±1.0) years. All had developmental regression, further diagnosed as atypical benign partial epilepsy (ABPE). The median age at last follow-up was 5.9 years. Five of 13 patients had repeated electroencephalogram records at our apartment, showing that epileptiform discharges in midline regions were significantly reduced either in frequency or amplitude with the improvement of ENM restricted to the lower limb and that independent epileptiform discharges in Rolandic regions from midline regions were noticed with the onset of nocturnal focal seizures. Conclusions: ENM restricted to the lower limb has a close association with vertex (midline) epileptiform discharges. ENM restricted to the lower limb as the first seizure type is a peculiar phenomenon of BEVS. Some patients could evolve into BECTS or overlap with BECTS, and further into ABPE. The age of seizure onset in BEVS with ENM restricted to the lower limb as the first symptom is a little earlier than in BECTS. Ignorance of the close association between midline spikes and ENM restricted to the lower limb may lead to misdiagnosis of these patients.
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Affiliation(s)
- P Gong
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
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Yang ZX, He XT, Jing HX, Sun JY. A Multi-Parameter Perturbation Solution and Experimental Verification for Bending Problem of Piezoelectric Cantilever Beams. Polymers (Basel) 2019; 11:polym11121934. [PMID: 31771311 PMCID: PMC6960771 DOI: 10.3390/polym11121934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 10/31/2019] [Revised: 11/21/2019] [Accepted: 11/21/2019] [Indexed: 11/18/2022] Open
Abstract
The existing studies indicate that the application of piezoelectric polymers is becoming more and more extensive, especially in the analysis and design of sensors or actuators, but the problems of piezoelectric structure are usually difficult to solve analytically due to the force–electric coupling characteristics. In this study, the bending problem of a piezoelectric cantilever beam was investigated via theoretical and experimental methods. First, the governing equations of the problem were established and non-dimensionalized. Three piezoelectric parameters were selected as perturbation parameters and the perturbation solution of the equations was finally obtained using a multi-parameter perturbation method. In addition, the relevant experiments of the piezoelectric cantilever beam were carried out, and the experimental results were in good agreement with the theoretical solutions. Based on the experimental results, the effect of piezoelectric properties on the bending deformation of piezoelectric cantilever beams was analyzed and discussed. The results indicated that the multi-parameter perturbation solution obtained in this study is effective and it may serve as a theoretical reference for the design of sensors or actuators made of piezoelectric polymers.
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Affiliation(s)
- Zhi-Xin Yang
- School of Civil Engineering, Chongqing University, Chongqing 400045, China; (Z.-X.Y.); (H.-X.J.); (J.-Y.S.)
| | - Xiao-Ting He
- School of Civil Engineering, Chongqing University, Chongqing 400045, China; (Z.-X.Y.); (H.-X.J.); (J.-Y.S.)
- Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing University, Ministry of Education, Chongqing 400045, China
- Correspondence: ; Tel.: +86-(0)23-65120720
| | - Hong-Xia Jing
- School of Civil Engineering, Chongqing University, Chongqing 400045, China; (Z.-X.Y.); (H.-X.J.); (J.-Y.S.)
| | - Jun-Yi Sun
- School of Civil Engineering, Chongqing University, Chongqing 400045, China; (Z.-X.Y.); (H.-X.J.); (J.-Y.S.)
- Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing University, Ministry of Education, Chongqing 400045, China
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Zhu J, Huang R, Hu D, Dou Y, Ren H, Yang Z, Deng C, Xiong W, Wang D, Mao Y, Li X, Su X. Individualized Prediction Of Metastatic Involvement Of Lymph Nodes Posterior To The Right Recurrent Laryngeal Nerve In Papillary Thyroid Carcinoma. Onco Targets Ther 2019; 12:9077-9084. [PMID: 31806992 PMCID: PMC6842273 DOI: 10.2147/ott.s220926] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 07/01/2019] [Accepted: 10/18/2019] [Indexed: 12/29/2022] Open
Abstract
Purpose We aimed to establish a prediction model based on preoperative clinicopathologic features and intraoperative frozen section examination for precise prediction of metastatic involvement of lymph nodes posterior to the right recurrent laryngeal nerve (LN-prRLN) in patients with papillary thyroid carcinoma (PTC). Methods Clinicopathologic data pertaining to patients with PTC who underwent initial thyroid surgery between July 2015 and December 2017 were collected from electronic medical records. Multivariate logistic regression analysis was performed to identify independent predictors of LN-prRLN metastasis for incorporation in the nomogram. The performance of the model was assessed using discriminative ability, calibration, and clinical application. Results A total of 592 patients were enrolled in this study. The LN-prRLN metastatic positivity was 19% (95% confidence interval [CI], 15.61–21.89%). On multivariate analysis, ultrasonography-reported LN status, extrathyroid extension, Delphian lymph node metastasis, and number of metastatic pretracheal and paratracheal lymph nodes were independent predictors of LN-prRLN metastasis. The nomogram showed good discriminative ability (C-index: 0.87; [95% CI, 0.84–0.91]; bias-corrected C-index: 0.86 [through bootstrapping validation]) and was well calibrated. The decision curve analysis indicated potential clinical usefulness of the nomogram. Conclusion This study demonstrates that the risk of LN-prRLN metastasis in individual patients can be robustly predicted by a nomogram that integrates readily available preoperative clinicopathologic features and intraoperative frozen section examination. The nomogram may facilitate intraoperative decision-making for patients with PTC.
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Affiliation(s)
- Jiang Zhu
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Rui Huang
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - DaiXing Hu
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Yi Dou
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - HaoYu Ren
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - ZhiXin Yang
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Chang Deng
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Wei Xiong
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Denghui Wang
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Yu Mao
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Xuesong Li
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - XinLiang Su
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
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Li X, Dai WR, Li L, Liu WF, Yang ZX, Xie L. [Investigation of medication compliance in patients with pneumoconiosis complicated with chronic obstructive pulmonary disease at stable stage]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 37:207-210. [PMID: 31189243 DOI: 10.3760/cma.j.issn.1001-9391.2019.03.010] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the compliance of inhalation during stable phase of pneumoconiosis complicated with COPD and to explore the factors influencing compliance. Methods: The patients with pneumoconiosis complicated with COPD who were hospitalized in the four Department of occupational disease prevention and treatment in Hunan province from December 2016 to August 2017 were selected as the research subjects. The examination of Chest radiograph, HRCT and lung function was perfected, and CAT score and MRC score were carried out. The age, culture, smoking history, acute aggravation of 1 years, medical insurance and so on were collected, and follow-up was conducted after 6 months. Results: Of the 115 patients who had successfully followed up, 14 cases (12.17%) were persisted in medication, and 101 cases (87.83%) did not adhere to the medication. The smoking index median of the non adherence group was 30 (15, 40) , while that of the adherence group was 16 (6, 31) . The smoking index of the adherence group was lower than that of the non adherence group. The FEV1% in the unadhered group was 44.69+15.48, and the drug group was 37.12+16.98, the FEV(1)/FVC in the unadhered group was 52.43+9.19, and the drug group was 44.43+11.88, and the lung function of the drug group was worse than that of the unadhered group. The adherence rate of group COPD (group D) was higher than that of group A, B and C, and the difference between D group and B group was statistically significant. The adherence rate of pneumoconiosis stage Ⅲ was higher than that of pneumoconiosis stageⅡand pneumoconiosisⅠ. Conclusion: The compliance of long acting bronchodilator inhalation is low in stable phase of pneumoconiosis complicated with COPD. The poorer the lung function, the higher the compliance of inhalation. The compliance of pneumoconiosis patients with Medical insurance for industrial injury is higher than that of pneumoconiosis patients with New rural cooperative medical service.
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Affiliation(s)
- X Li
- Hunan Occupational Disease Prevention and Treatment Hospital, Changsha 410007, China
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Zhang J, Zhang YH, Chen JY, Ji TY, Yang ZX, Yang XL, Sun W, Zhang LP, Wu XR. [Pathogenic gene variants and clinical phenotype features of 26 children with progressive myoclonic epilepsy]. Zhonghua Er Ke Za Zhi 2019; 57:458-464. [PMID: 31216804 DOI: 10.3760/cma.j.issn.0578-1310.2019.06.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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 identify the pathogenic gene variants and clinical phenotype features of 26 children with progressive myoclonic epilepsy (PME). Methods: In this cross-sectional study, 26 PME children (11 boys and 15 girls) sent to neurological outpatient clinics and admitted to wards of the Department of Pediatrics, Peking University First Hospital were enrolled prospectively from January 2014 to October 2018. The pathogenic gene variants of PME children and their parents were identified by Sanger sequencing, next generation sequencing panels of epilepsy or trio-based whole exome sequencing and so on. The genotypes and phenotypes of the PME children were anaylzed. Results: The clinical features of 26 children include myoclonus, multiple types of seizures and progressive neurological regression. Their onset ages ranged from 3 months to 15 years. Several pathogenic gene variants were identified in the 15 patients, including TPP1 gene variantions in 3 patients; NEU1, GBA, TBC1D24 and KCNC1 gene variantions in 2 patients respectively; CLN6, MFSD8, ASAH1 and ATN1 gene variantions in 1 patient respectively. Several variants of uncertain significance were identified in 4 patients, including GOSR2 gene compound heterozygous variants in 2 patients, KCTD7 gene compound heterozygous variants in 1 patient, and compound heterozygous variants of an unreported TARS gene in 1 patient. No pathogenic gene variant was identified in 7 patients. In 15 children with the identified pathogenic gene variants, 5 patients were diagnosed with neuronal ceroid lipofuscinoses (NCL), 2 patients with sialidosis, 2 patients with neuronopathic Gaucher disease, 1 patient with dentatorubral-pallidoluysian atrophy (DRPLA), and 1 patient with spinal muscular atrophy-progressive myoclonic epilepsy (SMA-PME). Conclusions: PME include a group of diseases with genetic heterogeneity. Identification of the pathogenic gene variants of PME could help to predict the prognosis and guide the genetic counseling.
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Affiliation(s)
- J Zhang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Y H Zhang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - J Y Chen
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - T Y Ji
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Z X Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - X L Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - W Sun
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - L P Zhang
- Department of Pediatrics, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
| | - X R Wu
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
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Dai WR, Li L, Li X, Liu WF, Yang ZX, Xie L. [Complications and influencing factors of pneumoconiosis patients undergoing CT guided percutaneous lung biopsy]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 37:56-60. [PMID: 30884592 DOI: 10.3760/cma.j.issn.1001-9391.2019.01.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the safety and influencing factors of ct-guided percutaneous lung biopsy in pneumoconiosis patients. Methods: The data of 63 patients with pneumoconiosis who underwent ct-guided percutaneous lung biopsy in our hospital were studied to analyze the incidence of complications and influencing factors of percutaneous lung biopsy. Results: 63 cases of pneumoconiosis patients received CT guided percutaneous lung biopsy. There were 29 cases of complications (46.03%) , including 20 pneumothorax (37.75%) , 12 bleeding (19.05%) , and 3 cases of liquid pneumothorax (4.76%) . The single factor chi square analysis showed that there were significant differences in age, depth of focus, puncture position and puncture times (P<0.05) , and there was significant difference between the occurrence of hemorrhage and age, type of focus, size of focus, and the location of puncture site (P<0.05) . The unconditional LogisticL multiple factor regression analysis showed that the depth of the lesion was an independent risk factor for concurrency pneumothorax, and the size of the lesion was an independent risk factor for bleeding. Conclusion: Complications of CT-guided percutaneous pulmonary biopsy are mainly pneumothorax and hemorrhage. Age, focus type, focus size, focus depth, puncture site, and puncture times are all the factors of complications.
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Affiliation(s)
- W R Dai
- Hunan institute of Occupational Disease Prevention and Treatment, Changsha 410007, China
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Yang ZX, Hu H, Zhang JH. Analysis of the Forensic Identification of Medical Disputes Related to 22 Cases of Death from Otolaryngology Diseases. Fa Yi Xue Za Zhi 2019; 35:300-303. [PMID: 31282624 DOI: 10.12116/j.issn.1004-5619.2019.03.007] [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] [Received: 02/25/2019] [Indexed: 11/30/2022]
Abstract
Abstract Objective To discuss the causes and precautionary measures of the risks of relevant medical disputes by analyzing 22 cases of death from otolaryngology diseases. Methods A retrospective analysis of 22 judicial expertise cases of medical disputes related to death from otolaryngology diseases accepted by Chongqing Zhengding Judicial Appraisal Institute and Academy of Forensic Science during 2008-2018 were made. Results Of the 22 cases, the male to female ratio was 3.4∶1. The age of death was from 1.3 to 76 years old, with an average age of 45.3 years. There were 28 medical institutions involved, of which 71.4% were tertiary medical institutions. Statistics for death causes showed that respiratory asphyxia accounted for 50%. Conclusion Forensic identification provides an important scientific basis for medical disputes cases related to otolaryngology diseases. It also has an important reference value for medical institutions to optimize the work procedure of diagnosis and treatment of otolaryngology diseases and improve the quality of diagnosis and treatment.
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Affiliation(s)
- Z X Yang
- Chongqing Zhengding Judicial Identification Institute, Chongqing Population and Family Planning Science and Technology Research Institute, Key Laboratory of Birth Defects and Reproductive Health of National Health and Family Planning Commission, Chongqing 400020, China
| | - H Hu
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai General Hospital, Shanghai Jiaotong University, Shanghai 200080, China
| | - J H Zhang
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
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Yang J, Li H, Zheng RS, Zeng HM, Zhang SW, Yang ZX, Cao MM, Chen WQ. [Analysis of the clinical characteristics of 8 081 primary lung cancer]. Zhonghua Zhong Liu Za Zhi 2019; 41:471-476. [PMID: 31216836 DOI: 10.3760/cma.j.issn.0253-3766.2019.06.014] [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 characterize the clinical epidemiological features of primary lung cancer patients based on massive clinical data. Methods: The demographic and histological information of 8 081 primary lung cancer patients who were initially identified from 1 January 2012 to 31 December 2013 in 16 hospitals from 6 provinces were retrospectively analyzed to determine the characteristics of different histological subtypes among different gender, age-group and birth cohort. Results: Among the 8 081 lung cancer patients, 5 422 (67.10%) were male and 2 659 (32.90%) were female, the average age was (60.96±10.14) years. The most common histological subtypes of lung cancer successively were adenocarcinoma (ADC), squamous cell carcinoma (SCC), small cell carcinoma and large cell carcinoma, and the proportions of these subtypes were 53.13%, 24.51%, 14.59% and 0.66%, respectively, which collectively accounted for 92.89%. The current highest smoking rate was observed in SCC patients, which was 62.45%, while lowest in ADC, which was 29.68%. The incidence of lung cancer in male was significantly higher that that of female, with a sex ratio of 2.04∶1. The highest sex ratio was observed in SCC, which was 9.14∶1, while lowest in ADC, which was 1.14∶1. The distribution of histological subtypes in male lung cancer patients was consistent with the general situation.While among the female lung cancer patients, the proportion of ADC was the highest (75.42%), followed by SCC (10.08%), squamous cell carcinoma (7.34%) and large cell carcinoma (0.39%). Analyzed by the birth cohort, the proportion of ADC gradually increased with the age, while the reduced tendency was observed in SCC (P<0.000 1). Conclusion: Adenocarcinoma is the most important histological subtype of lung cancer, and the distribution characteristics of histological subtypes of lung cancer differs among genders, age and birth cohort.
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Affiliation(s)
- J Yang
- Administration Office, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Li
- Office of Cancer Screening, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - R S Zheng
- Office of Cancer Registration, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - H M Zeng
- Office of Cancer Registration, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - S W Zhang
- Office of Cancer Registration, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Z X Yang
- Office of Cancer Screening, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - M M Cao
- Office of Cancer Screening, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - W Q Chen
- Office of Cancer Screening, 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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Shi DY, Liu FJ, Mao YY, Cui RT, Lu JS, Yu YZ, Dong XJ, Yang ZX, Sun ZW, Pang XB. Development and evaluation of candidate subunit vaccine and novel antitoxin against botulinum neurotoxin serotype E. Hum Vaccin Immunother 2019; 16:100-108. [PMID: 31210561 DOI: 10.1080/21645515.2019.1633878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Botulinum neurotoxins (BoNTs) are among the most toxic proteins. Vaccination is an effective strategy to prevent botulism. To generate a vaccine suitable for human use, a recombinant non-His-tagged isoform of the Hc domain of botulinum neurotoxin serotype E (rEHc) was expressed in Escherichia coli and purified by sequential chromatography. The immunogenicity of rEHc was evaluated in mice and dose- and time-dependent immune responses were observed in both antibody titers and protective potency. Then, the pilot-scale expression and purification of rEHc were performed, and its immunological activity was characterized. Our results showed rEHc has good immunogenicity and can elicit strong protective potency against botulinum neurotoxin serotype E (BoNT/E) in mice, indicating that rEHc is an effective botulism vaccine candidate. Further, we developed a novel antitoxin against BoNT/E by purifying F(ab')2 from pepsin-digested serum IgG of rEHc-inoculated horses. The protective effect of the F(ab')2 antitoxin was determined in vitro and in vivo. The results showed that our F(ab')2 antitoxin can prevent botulism in BoNT/E-challenged mice and effectively alleviate the progression of paralysis caused by BoNT/E to achieve therapeutic effects. Therefore, our results provide valuable experimental data for the production of a novel antitoxin, which is a promising candidate for the treatment of BoNT/E-induced botulism.
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Affiliation(s)
- Dan-Yang Shi
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Fu-Jia Liu
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China.,Pharmaceutical College, Henan University, Kaifeng, China
| | - Yun-Yun Mao
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Rong-Tian Cui
- Department of Drug Registration, Jiangsu T-mab BioPharma Co., Ltd, Taizhou, China
| | - Jian-Sheng Lu
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Yun-Zhou Yu
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Xiao-Jie Dong
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Zhi-Xin Yang
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Zhi-Wei Sun
- Department of Protein Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Xiao-Bin Pang
- Pharmaceutical College, Henan University, Kaifeng, China
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