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Ma EM, Lu K, Wei YB. [Constructing an early-warning model for mortality risk in heat stroke patients based on Fisher discriminant analysis]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2024; 42:282-285. [PMID: 38677992 DOI: 10.3760/cma.j.cn121094-20230223-00050] [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: 04/29/2024]
Abstract
Objective: To establish an early warning model to assess the mortality risk of patients with heat stroke disease. Methods: The case data of patients diagnosed with heat stroke disease admitted to the comprehensive ICU of Shanshan County from January 2016 to December 2020 were selected. According to the short-term outcome (28 days) of patients, they were divided into death group (20 cases) and survival group (53 cases) . The relevant indicators with statistically significant differences between groups within 24 hours after admission were selected. By drawing the subject work curve (ROC) and calculating the area under the curve, the relevant indicators with the area under the curve greater than 0.7 were selected, Fisher discriminant analysis was used to establish an assessment model for the death risk of heat stroke disease. The data of heat stroke patients from January 1, 2021 to December 2022 in the comprehensive ICU of Shanshan County were collected for external verification. Results There were significant differences in age, cystatin C, procalcitonin, platelet count, CKMB, CK, CREA, PT, TT, APTT, heart rate, respiratory rate and GLS score among the groups. Cystatin C, CKMB, CREA, PT, TT, heart rate AUC area at admission was greater than 0.7. Fisher analysis method is used to build a functional model. Results: The diagnostic sensitivity, specificity and AUC area of the functional model were 95%, 83% and 0.937 respectively. The external validation results showed that the accuracy of predicting survival group was 85.71%, the accuracy of predicting death group was 88.89%. Conclusion: The early warning model of heat stroke death constructed by ROC curve analysis and Fisher discriminant analysis can provide objective reference for early intervention of heat stroke.
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Affiliation(s)
- E M Ma
- Department of Respiratory and Critical Care Medicine, Shanshan Country People's Hospital, Shanshan 838200, China
| | - K Lu
- Department of Respiratory and Critical Care Medicine, Shanshan Country People's Hospital, Shanshan 838200, China
| | - Y B Wei
- Department of Respiratory and Critical Care Medicine, Shanshan Country People's Hospital, Shanshan 838200, China
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Xu W, Zhong Y, Li X, Lu K. Stabilizing Supersaturation with Extreme Grain Refinement in Spinodal Aluminum Alloys. Adv Mater 2024; 36:e2303650. [PMID: 37276137 DOI: 10.1002/adma.202303650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/01/2023] [Indexed: 06/07/2023]
Abstract
Supersaturated solid solutions can be formed in alloys from various non-equilibrium processes, but stabilizing the metastable phases against decomposition is challenging, particularly the spinodal decomposition that occurs via chemical fluctuations without energy barriers to nucleation. In this work, it is found that spinodal decomposition in supersaturated Al(Zn) solid solutions can be inhibited with straining-induced extreme grain refinement. For the refined supersaturated grains at the nanoscale, their spinodal decomposition is obviously resisted by the relaxed grain boundaries and reduced lattice defects. As grains are refined below 10 nm the decomposition is completely inhibited, in which atomic diffusion is blocked by the stable Schwarz crystal structure with vacancy-free grains. Extreme grain refinement offers a general approach to stabilize supersaturated phases with broadened compositional windows for property modulation of alloys.
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Affiliation(s)
- Wei Xu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
| | - Yiming Zhong
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, 110016, China
| | - Xiuyan Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
| | - K Lu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
- Liaoning Academy of Materials, Shenyang, 110004, China
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Wei P, Lamont B, He T, Xue W, Wang PC, Song W, Zhang R, Keyhani AB, Zhao S, Lu W, Dong F, Gao R, Yu J, Huang Y, Tang L, Lu K, Ma J, Xiong Z, Chen L, Wan N, Wang B, He W, Teng M, Dian Y, Wang Y, Zeng L, Lin C, Dai M, Zhou Z, Xiao W, Yan Z. Vegetation-fire feedbacks increase subtropical wildfire risk in scrubland and reduce it in forests. J Environ Manage 2024; 351:119726. [PMID: 38052142 DOI: 10.1016/j.jenvman.2023.119726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 11/20/2023] [Accepted: 11/25/2023] [Indexed: 12/07/2023]
Abstract
Climate dictates wildfire activity around the world. But East and Southeast Asia are an apparent exception as fire-activity variation there is unrelated to climatic variables. In subtropical China, fire activity decreased by 80% between 2003 and 2020 amid increased fire risks globally. Here, we assessed the fire regime, vegetation structure, fuel flammability and their interactions across subtropical Hubei, China. We show that tree basal area (TBA) and fuel flammability explained 60% of fire-frequency variance. Fire frequency and fuel flammability, in turn, explained 90% of TBA variance. These results reveal a novel system of scrubland-forest stabilized by vegetation-fire feedbacks. Frequent fires promote the persistence of derelict scrubland through positive vegetation-fire feedbacks; in forest, vegetation-fire feedbacks are negative and suppress fire. Thus, we attribute the decrease in wildfire activity to reforestation programs that concurrently increase forest coverage and foster negative vegetation-fire feedbacks that suppress wildfire.
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Affiliation(s)
- P Wei
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - B Lamont
- Ecology Section, School of Molecular and Life Sciences, Curtin University, Perth, WA 6845, Australia.
| | - T He
- College of Science Engineering & Education, Murdoch University, Murdoch, WA 6150, Australia.
| | - W Xue
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - P C Wang
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - W Song
- College of Agronomy, Northwest Agriculture & Forestry University, Xianyang, 712100, China.
| | - R Zhang
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - A B Keyhani
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - S Zhao
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - W Lu
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - F Dong
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - R Gao
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - J Yu
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - Y Huang
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - L Tang
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - K Lu
- Hubei Forestry Survey and Design Institute, East Lake Science and Technology, District, Wuhan, 430074, Hubei, China.
| | - J Ma
- Hubei Forestry Survey and Design Institute, East Lake Science and Technology, District, Wuhan, 430074, Hubei, China.
| | - Z Xiong
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - L Chen
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - N Wan
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - B Wang
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - W He
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - M Teng
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - Y Dian
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - Y Wang
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - L Zeng
- Key Laboratory of Forest Ecology and Environment, Chinese Academy of Forestry, Beijing, 100091, China.
| | - C Lin
- Hubei Forestry Survey and Design Institute, East Lake Science and Technology, District, Wuhan, 430074, Hubei, China.
| | - M Dai
- Hubei Forestry Survey and Design Institute, East Lake Science and Technology, District, Wuhan, 430074, Hubei, China.
| | - Z Zhou
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - W Xiao
- Key Laboratory of Forest Ecology and Environment, Chinese Academy of Forestry, Beijing, 100091, China.
| | - Z Yan
- Department of Forestry, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
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Liu L, Zhang J, Lu K, Zhang Y, Xu X, Deng J, Zhang X, Zhang H, Zhao Y, Wang X. ChemR23 signaling ameliorates brain injury via inhibiting NLRP3 inflammasome-mediated neuronal pyroptosis in ischemic stroke. J Transl Med 2024; 22:23. [PMID: 38178174 PMCID: PMC10768115 DOI: 10.1186/s12967-023-04813-0] [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: 07/15/2023] [Accepted: 12/18/2023] [Indexed: 01/06/2024] Open
Abstract
BACKGROUND Inflammatory response has been recognized as a pivotal pathophysiological process during cerebral ischemia. ChemR23 signaling is involved in the pathophysiology of various inflammatory diseases. Nevertheless, the role of ChemR23 signaling in ischemic stroke remains largely unknown. METHODS Permanent ischemic stroke mouse model was accomplished by middle cerebral artery occlusion (MCAO). Resolvin E1 (RvE1) or chemerin-9 (C-9), the agonists of ChemR23, were administered by intracerebroventricular (i.c.v) injection before MCAO induction. Then, analysis of neurobehavioral deficits and brain sampling were done at Day 1 after MCAO. The brain samples were further analyzed by histological staining, immunofluorescence, RNA sequencing, ELISA, transmission electron microscope, and western blots. Furthermore, oxygen-glucose deprivation (OGD) was employed in SH-SY5Y to mimic MCAO in vitro, and ChemR23 signaling pathway was further studied by overexpression of ChemR23 or administration of related agonists or antagonists. Analysis of cell death and related pathway markers were performed. RESULTS ChemR23 expression was upregulated following MCAO. Under in vitro and in vivo ischemic conditions, ChemR23 deficiency or inhibition contributed to excessive NLRP3-mediated maturation and release of IL-1β and IL-18, as well as enhanced cleavage of GSDMD-N and neuronal pyroptosis. These influences ultimately aggravated brain injury and neuronal damage. On the other hand, ChemR23 activation by RvE1 or C-9 mitigated the above pathophysiological abnormalities in vivo and in vitro, and overexpression of ChemR23 in SH-SY5Y cells also rescued OGD-induced neuronal pyroptosis. Blockade of NLRP3 mimics the protective effects of ChemR23 activation in vitro. CONCLUSION Our data indicated that ChemR23 modulates NLRP3 inflammasome-mediated neuronal pyroptosis in ischemic stroke. Activation of ChemR23 may serve as a promising potential target for neuroprotection in cerebral ischemia.
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Affiliation(s)
- Lan Liu
- Department of Neurology, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
- Shanghai Neurological Rare Disease Biobank and Precision Diagnostic Technical Service Platform, Shanghai, China
| | - Jiawei Zhang
- Department of Neurology, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
- Shanghai Neurological Rare Disease Biobank and Precision Diagnostic Technical Service Platform, Shanghai, China
| | - Kaili Lu
- Department of Neurology, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
- Shanghai Neurological Rare Disease Biobank and Precision Diagnostic Technical Service Platform, Shanghai, China
| | - Yaxuan Zhang
- Department of Neurology, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
- Shanghai Neurological Rare Disease Biobank and Precision Diagnostic Technical Service Platform, Shanghai, China
| | - Xiaofeng Xu
- Department of Neurology, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
- Shanghai Neurological Rare Disease Biobank and Precision Diagnostic Technical Service Platform, Shanghai, China
| | - Jiangshan Deng
- Department of Neurology, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
- Shanghai Neurological Rare Disease Biobank and Precision Diagnostic Technical Service Platform, Shanghai, China
| | - Xiaojie Zhang
- Department of Neurology, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
- Shanghai Neurological Rare Disease Biobank and Precision Diagnostic Technical Service Platform, Shanghai, China
| | - Haibing Zhang
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yuwu Zhao
- Department of Neurology, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China.
- Shanghai Neurological Rare Disease Biobank and Precision Diagnostic Technical Service Platform, Shanghai, China.
| | - Xiuzhe Wang
- Department of Neurology, Shanghai Sixth People's Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China.
- Shanghai Neurological Rare Disease Biobank and Precision Diagnostic Technical Service Platform, Shanghai, China.
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5
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Wang L, Zhang X, Zhang H, Lu K, Li M, Li X, Ou Y, Zhao X, Wu X, Wu X, Liu J, Xing M, Liu H, Zhang Y, Tan Y, Li F, Deng X, Deng J, Zhang X, Li J, Zhao Y, Ding Q, Wang H, Wang X, Luo Y, Zhou B, Zhang H. Excessive apoptosis of Rip1-deficient T cells leads to premature aging. EMBO Rep 2023; 24:e57925. [PMID: 37965894 PMCID: PMC10702839 DOI: 10.15252/embr.202357925] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/29/2023] [Accepted: 11/02/2023] [Indexed: 11/16/2023] Open
Abstract
In mammals, the most remarkable T cell variations with aging are the shrinking of the naïve T cell pool and the enlargement of the memory T cell pool, which are partially caused by thymic involution. However, the mechanism underlying the relationship between T-cell changes and aging remains unclear. In this study, we find that T-cell-specific Rip1 KO mice show similar age-related T cell changes and exhibit signs of accelerated aging-like phenotypes, including inflammation, multiple age-related diseases, and a shorter lifespan. Mechanistically, Rip1-deficient T cells undergo excessive apoptosis and promote chronic inflammation. Consistent with this, blocking apoptosis by co-deletion of Fadd in Rip1-deficient T cells significantly rescues lymphopenia, the imbalance between naïve and memory T cells, and aging-like phenotypes, and prolongs life span in T-cell-specific Rip1 KO mice. These results suggest that the reduction and hyperactivation of T cells can have a significant impact on organismal health and lifespan, underscoring the importance of maintaining T cell homeostasis for healthy aging and prevention or treatment of age-related diseases.
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Affiliation(s)
- Lingxia Wang
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Xixi Zhang
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Haiwei Zhang
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Kaili Lu
- Department of NeurologyShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Ming Li
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Xiaoming Li
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Yangjing Ou
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Xiaoming Zhao
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Xiaoxia Wu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Xuanhui Wu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Jianling Liu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Mingyan Xing
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Han Liu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Yue Zhang
- Department of Anesthesiology, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Yongchang Tan
- Department of Anesthesiology, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Fang Li
- Department of Anesthesiology, Shanghai First People's HospitalShanghai Jiaotong UniversityShanghaiChina
| | - Xiaoxue Deng
- CAS Key Laboratory of Molecular Virology and ImmunologyUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Jiangshan Deng
- Department of NeurologyShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Xiaojie Zhang
- Department of NeurologyShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Jinbao Li
- Department of Anesthesiology, Shanghai First People's HospitalShanghai Jiaotong UniversityShanghaiChina
| | - Yuwu Zhao
- Department of NeurologyShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Qiurong Ding
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Haikun Wang
- CAS Key Laboratory of Molecular Virology and ImmunologyUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Xiuzhe Wang
- Department of NeurologyShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Yan Luo
- Department of Anesthesiology, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Ben Zhou
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
| | - Haibing Zhang
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of Sciences, Chinese Academy of SciencesShanghaiChina
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Lu K, Wu YM, Shi Q, Gong YQ, Zhang T, Li C. The impact of acute-phase reaction on mortality and re-fracture after zoledronic acid in hospitalized elderly osteoporotic fracture patients. Osteoporos Int 2023; 34:1613-1623. [PMID: 37247006 DOI: 10.1007/s00198-023-06803-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/18/2023] [Indexed: 05/30/2023]
Abstract
This study involving 674 elderly osteoporotic fracture (OPF) patients undergoing orthopedic surgery investigated the long-term outcomes of acute phase reaction (APR) after initial zoledronic acid (ZOL). Those who had an APR had a 97% higher risk of mortality and a 73% lower rate of re-fracture than patients who did not. INTRODUCTION Annual infusion of ZOL efficiently decreases the risk of fracture. A temporary APR, consisting of flu-like symptoms, myalgia, and fever, is frequently observed within 3 days after the first dose. This work aimed to identify whether the occurrence of APR after initial ZOL infusion is a reliable indicator of drug efficacy for mortality and re-fracture in elderly OPF patients undergoing orthopedic surgery. METHODS This retrospectively observed work was constructed on a database prospectively collected from the Osteoporotic Fracture Registry System of a tertiary level A hospital in China. Six hundred seventy-four patients 50 years old or older with newly identified hip/morphological vertebral OPF who received ZOL for the first time after orthopedic surgery were included in the final analysis. APR was identified as a maximum axillary body temperature greater than 37.3 °C for the first 3 days after ZOL infusion. We utilized models of multivariate Cox proportional hazards to compare the risk of all-cause mortality in OPF patients with APR (APR+) and without APR (APR-). Competing risks regression analysis was used to examine the association between the occurrence of APR and re-fracture when mortality was taken into account. RESULTS In a fully adjusted Cox proportional hazards model, APR+ patients had a significantly higher risk of death than APR- patients with a hazard ratio [HR] 1.97 (95% CI, 1.09-3.56; P-value = 0.02). Furthermore, in an adjusted competing risk regression analysis, APR+ patients had a significantly reduced risk of re-fracture compared with APR- patients with a sub-distribution HR, 0.27 (95% CI, 0.11-0.70; P-value = 0.007). CONCLUSIONS Our findings suggested a potential association between the occurrence of APR and increased mortality risk. An initial dose of ZOL following orthopedic surgery was found to be protective against re-fracture in older patients with OPFs.
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Affiliation(s)
- K Lu
- Department of Orthopedics, Affiliated Kunshan Hospital of Jiangsu University, No. 566 East of Qianjin Road, Suzhou, 215300, Jiangsu, China
| | - Y-M Wu
- Department of Orthopedics, Affiliated Kunshan Hospital of Jiangsu University, No. 566 East of Qianjin Road, Suzhou, 215300, Jiangsu, China
| | - Q Shi
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Orthopedic Institute of Soochow University, Suzhou, Jiangsu, China
| | - Y-Q Gong
- Information Department, Affiliated Kunshan Hospital of Jiangsu University, Suzhou, Jiangsu, China
| | - T Zhang
- Chronic Disease Department, Kunshan Center For Disease Control and Prevention, Suzhou, Jiangsu, China
| | - C Li
- Department of Orthopedics, Affiliated Kunshan Hospital of Jiangsu University, No. 566 East of Qianjin Road, Suzhou, 215300, Jiangsu, China.
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7
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Wang H, He Q, Liu D, Deng XZ, Ma J, Xie LN, Sun ZL, Liu C, Zhao RR, Lu K, Chu XX, Gao N, Wei HC, Sun YH, Zhong YP, Xing LJ, Zhang HY, Zhang H, Xu WW, Li ZJ. [Efficacy and safety of bendamustine-rituximab combination therapy for newly diagnosed indolent B-cell non-Hodgkin's lymphoma and elderly mantle cell lymphoma: a multi-center prospective phase II clinical trial in China]. Zhonghua Xue Ye Xue Za Zhi 2023; 44:550-554. [PMID: 37749033 PMCID: PMC10509620 DOI: 10.3760/cma.j.issn.0253-2727.2023.07.004] [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] [Received: 12/12/2022] [Indexed: 09/27/2023]
Abstract
Objectives: This study aimed to assess the efficacy and safety of bendamustine in combination with rituximab (BR regimen) for the treatment of newly diagnosed indolent B-cell non-Hodgkin's lymphoma (B-iNHL) and elderly mantle cell lymphoma (eMCL) . Methods: From December 1, 2020 to September 10, 2022, a multi-center prospective study was conducted across ten Grade A tertiary hospitals in Shandong Province, China. The BR regimen was administered to evaluate its efficacy and safety in newly diagnosed B-iNHL and eMCL patients, and all completed at least four cycles of induction therapy. Results: The 72 enrolled patients with B-iNHL or MCL were aged 24-74 years, with a median age of 55 years. Eastern Cooperative Oncology Group (ECOG) performance status scores of 0-1 were observed in 76.4% of patients, while 23.6% had scores of 2. Disease distribution included follicular lymphoma (FL) (51.4% ), marginal zone lymphoma (MZL) (33.3% ), eMCL (11.1% ), and the unknown subtype (4.2% ). According to the Ann Arbor staging system, 16.7% and 65.3% of patients were diagnosed with stage Ⅲ and stage Ⅳ lymphomas, respectively. Following four cycles of BR induction therapy, the overall response rate was 98.6%, with a complete response (CR) rate of 83.3% and a partial response (PR) rate of 15.3%. Only one eMCL patient experienced disease progression during treatment, and only one FL patient experienced a relapse. Even when evaluated using CT alone, the CR rate was 63.9%, considering the differences between PET/CT and CT assessments. The median follow-up duration was 11 months (range: 4-22), with a PFS rate of 96.8% and an OS rate of 100.0%. The main hematologic adverse reactions included grade 3-4 leukopenia (27.8%, with febrile neutropenia observed in 8.3% of patients), grade 3-4 lymphopenia (23.6% ), grade 3-4 anemia (5.6% ), and grade 3-4 thrombocytopenia (4.2% ). The main non-hematologic adverse reactions such as fatigue, nausea/vomiting, rash, and infections occurred in less than 20.0% of patients. Conclusion: Within the scope of this clinical trial conducted in China, the BR regimen demonstrated efficacy and safety in treating newly diagnosed B-iNHL and eMCL patients.
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Affiliation(s)
- H Wang
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Q He
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - D Liu
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - X Z Deng
- Department of Hematology, Weihai Municipal Hospital, Weihai 264200, China
| | - J Ma
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - L N Xie
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Z L Sun
- Department of Hematology, Jining First People's Hospital, Jining 272000, China
| | - C Liu
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - R R Zhao
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - K Lu
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - X X Chu
- Department of Hematology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai 264000, China
| | - N Gao
- Department of Hematology, Binzhou Medical University Hospital, Binzhou 256600, China
| | - H C Wei
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Y H Sun
- Department of Hematology, Weifang People's Hospital, Weifang 261000, China
| | - Y P Zhong
- Department of Hematology, Qingdao Municipal Hospital, Qingdao 266000, China
| | - L J Xing
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - H Y Zhang
- Department of Hematology, Linyi People's Hospital, Linyi 276000, China
| | - H Zhang
- Department of Hematology, Affiliated Hospital of Jining Medical University, Jining 272000, China
| | - W W Xu
- Department of Hematology, The First Affiliated Hospital of Shandong First Medical University, Jinan 250000, China
| | - Z J Li
- Department of Hematology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
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Zhao Y, Xu J, Shangguan J, Pan H, Lu K, Hu S, Xu H. In situ gel-forming oil as rectally delivering platform of hydrophobic therapeutics for ulcerative colitis therapy. Int J Pharm 2023:123149. [PMID: 37336301 DOI: 10.1016/j.ijpharm.2023.123149] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/21/2023] [Accepted: 06/14/2023] [Indexed: 06/21/2023]
Abstract
Because of their poor water-soluble properties and non-specific distribution, most hydrophobic therapeutics had limited benefit for patients with ulcerative colitis. Herein, an in-situ oil-based gel has been developed as a rectal delivery vehicle for these therapeutics. In situ gel-forming oil (BBLG) was composed of soybean phosphatidyl choline (40%, w/w), glyceryl dioleate (50%, w/w), and ethanol (10%, w/w). The hydrophobic laquinimod (LAQ) as a model drug was easily dissolved in gel-forming oil and its solubility was reaching to 7 ± 0.1 mg/mL. Importantly, upon contact with the colonic fluids, the gel-forming oil was quickly transited to a semi-solid gel, adhering to the inflamed colon mucosa and forming a protective barrier. Transmission Electron Microscopy showed that the gel network was arranged by the connected lipid spheres and LAQ was non-crystally encapsulated into the lipid spheres. Moreover, the universal adhesive test showed that the adhesive force and the adhesive energy of BBLG toward fresh colon tissues were 711±12 mN and 25 ± 2 J/m2, which was 2.14-fold and 5-fold higher than that of the marketed Poloxamer 407 gel, respectively. Meanwhile, in vivo imaging confirmed that the retention time of BBLG in the colon lumen was more than 8 h after rectal administration. In vivo animal studies showed that BBLG also greatly enhanced the therapeutic impact of LAQ on TNBS-treated rats with ulcerative colitis, as evidenced by reduced disease activity index (DAI) scores and weight loss. Moreover, the colonic inflammation was significantly alleviated and the goblet cells were obliviously restored after treatment. Importantly, the gut mucosa barrier was largely repaired without any formation of fibrosis remodeling. Conclusively, in situ liquid gel may be a potential delivery system of hydrophobic medicines for ulcerative colitis.
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Affiliation(s)
- Yingzheng Zhao
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China; CiXi Biomedical Research Institute of Wenzhou Medical University, China
| | - Jiawei Xu
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China; CiXi Biomedical Research Institute of Wenzhou Medical University, China
| | - Jianxun Shangguan
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China; CiXi Biomedical Research Institute of Wenzhou Medical University, China
| | - Hanxiao Pan
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China; CiXi Biomedical Research Institute of Wenzhou Medical University, China
| | - Kaili Lu
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China; CiXi Biomedical Research Institute of Wenzhou Medical University, China
| | - Sunkuan Hu
- Department of Gastroenterology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou City, Zhejiang Province 325000, China.
| | - Helin Xu
- Department of pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China; CiXi Biomedical Research Institute of Wenzhou Medical University, China.
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9
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Lin G, Yu F, Li D, Chen Y, Zhang M, Lu K, Wang N, Hu S, Zhao Y, Xu H. Polydopamine-cladded montmorillonite micro-sheets as therapeutic platform repair the gut mucosal barrier of murine colitis through inhibiting oxidative stress. Mater Today Bio 2023; 20:100654. [PMID: 37214550 PMCID: PMC10195987 DOI: 10.1016/j.mtbio.2023.100654] [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] [Received: 03/30/2023] [Revised: 04/28/2023] [Accepted: 05/01/2023] [Indexed: 05/24/2023] Open
Abstract
Montmorillonite (MMT), a layered aluminosilicate, has a mucosal nutrient effect and restores the gut barriers integrity. However, orally administrating MMT is not effective to combat the reactive oxygen species (ROS) and alleviate the acute inflammatory relapse for colitis patients. Herein, polydopamine-doped montmorillonite micro-sheets (PDA/MMT) have been developed as a therapeutic platform for colitis treatment. SEM and EDS analysis showed that dopamine monomer (DA) was easily polymerized in alkaline condition and polydopamine (PDA) was uniformly cladded on the surface of MMT micro-sheets. The depositing amount of PDA was reaching to 2.06 ± 0.08%. Moreover, in vitro fluorescence probes experiments showed that PDA/MMT presented the broad spectra of scavenging various ROS sources including •OH, •O2-, and H2O2. Meanwhile, the intracellular ROS of Rosup/H2O2 treated Caco-2 cell was also effectively scavenged by PDA/MMT, which resulted in the obvious improvement of the cell viability under oxidative stress. Moreover, most of orally administrated PDA/MMT was transited to the gut and form a protective film on the diseased colon. PDA/MMT exhibited the obvious therapeutic effect on DSS-induced ulcerative colitis mouse. Importantly, the gut mucosa of colitis mouse was well restored after PDA/MMT treatment. Moreover, the colonic inflammation was significantly alleviated and the goblet cells were obliviously recovered. The therapeutic mechanism of PDA/MMT was highly associated with inhibiting oxidative stress. Collectively, PDA/MMT micro-sheets as a therapeutic platform may provide a promising therapeutic strategy for UC treatment.
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Affiliation(s)
- Gaolong Lin
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province, 325035, China
| | - Fengnan Yu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province, 325035, China
| | - Dingwei Li
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province, 325035, China
| | - Yi Chen
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province, 325035, China
| | - Mengjiao Zhang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province, 325035, China
| | - Kaili Lu
- CiXi Biomedical Research Institute of Wenzhou Medical University, China
| | - Neili Wang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province, 325035, China
| | - Sunkuan Hu
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou City, Zhejiang Province, 325000, China
| | - Yingzheng Zhao
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province, 325035, China
| | - Helin Xu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province, 325035, China
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Li W, Yang N, Li K, Fan H, Yu Q, Wu H, Wang Y, Meng X, Wu J, Wang Z, Liu Y, Wang X, Qin X, Lu K, Zhuang W, He S, Janne P, Seto T, Ou SH, Zhou C. 14MO Updated efficacy and safety of taletrectinib in patients (pts) with ROS1+ non-small cell lung cancer (NSCLC). J Thorac Oncol 2023. [DOI: 10.1016/s1556-0864(23)00268-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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11
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Li C, Lu K. Comments on "Relatively low and moderate pre-fracture serum 25-hydroxyvitamin D levels associated with the highest survival in elderly hip fracture patients in Finland: a minimum 3-year follow-up". Osteoporos Int 2023; 34:413-414. [PMID: 36409360 DOI: 10.1007/s00198-022-06417-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 05/01/2022] [Indexed: 11/22/2022]
Affiliation(s)
- C Li
- Department of Orthopedics, Affiliated Kunshan Hospital of Jiangsu University, No. 91 West of Qianjin Road, Suzhou, 215300, Jiangsu, China
| | - K Lu
- Department of Orthopedics, Affiliated Kunshan Hospital of Jiangsu University, No. 91 West of Qianjin Road, Suzhou, 215300, Jiangsu, China.
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Lu K, Pang F, Shadiev R. Understanding college students' continuous usage intention of asynchronous online courses through extended technology acceptance model. Educ Inf Technol (Dordr) 2023; 28:1-19. [PMID: 36688218 PMCID: PMC9843658 DOI: 10.1007/s10639-023-11591-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
Asynchronous online learning has gained great popularity in higher education, especially due to the recent COVID-19 pandemic. However, few studies have investigated how to maintain students' continuous usage intention of asynchronous online courses in the context of higher education. This study incorporated four key factors (intrinsic motivation, extrinsic motivation, perception of multiple sources, and cognitive engagement) associated with students' continuous usage intention of asynchronous online courses into technology acceptance model (TAM) to identify the influencing factors on students' continuous usage intention. A survey with 325 college students was conducted to explore their continuous usage intention of asynchronous online courses and structural equation modeling analysis was carried out to analyze the relationships between the key influencing factors and students' continuous usage intention. The results showed that cognitive engagement was the only factor that directly related to continuous usage intention. Intrinsic motivation, extrinsic motivation, and perception of multiple sources indirectly correlated with students' continuous usage intention through different pathways. The results of the study have several theoretical and practical implications. Theoretically, the study verified what key learning factors incorporated into TAM and in what way they relate to the continuous usage intention of asynchronous online courses. Practically, the present study indicated that it is required to take intrinsic motivation, extrinsic motivation, perception of multiple sources, cognitive engagement and TAM into consideration when designing and conducting asynchronous online learning courses to ensure college students' continuous usage intention of asynchronous online courses.
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Affiliation(s)
- Kaili Lu
- College of Education Science and Technology, Nanjing University of Posts and Telecommunications, No. 09 Wenyuan Road, 210023 Nanjing, China
| | - Feng Pang
- Cyber Security and Informatization Office, Nanjing Forestry University, No. 159 Longpan Road, 210037 Nanjing, China
| | - Rustam Shadiev
- College of Education, Zhejiang University, No. 866, Yuhangtang Road, 310058 Hangzhou, China
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Yuan J, Wu R, Xiang J, Deng J, Zhang X, Lu K, Cao F, Zhao F, Zhao Y, Wang F. Analyses on safety and efficacy of non-standard dose of r-tPA in intravenous thrombolysis-treated AIS patients. Front Neurol 2022; 13:1007167. [DOI: 10.3389/fneur.2022.1007167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 10/17/2022] [Indexed: 11/16/2022] Open
Abstract
BackgroundIntravenous 0.9 mg/kg recombinant tissue plasminogen activator (r-tPA) is one of the most effective treatments in acute ischemic stroke patients. Practically, the dose of r-tPA is still a topic that is constantly being discussed.MethodsFor this observational study, data were obtained from 537 patients who received r-tPA thrombolysis at Shanghai Sixth People's Hospital stroke center over 5 years (2014–2019). Patients were divided into two groups: a non-standard dose group (0.6 mg/kg ≤ dose < 0.9 mg/kg) and a standard dose group (0.9 mg/kg). Different outcomes were observed: efficacy: 3 months mRS 0-1 (3m-mRS0-1); safety: symptomatic intracranial hemorrhage within 24 h (24h-sICH) and 3 months mortality (3m-death). We also observed the effect of r-tPA dose coefficient on outcomes in different age groups and baseline National Institute of Health stroke scale (NIHSS) score subgroups.ResultsThere were 265 patients who gave the standard dose treatment and 272 gave the nonstandard dose. There was no significant difference between the non-standard dose group and the standard dose group in 3m-mRS0-1, 3m-death, and 24h-sICH (p = 0.567, 0.327, and 0.415, respectively). The dose coefficient presents a significant negative correlation (p = 0.034, B = −4.290) with 3m-death in NIHSS < 16 sub-group. Door-to-needle time (DNT) is the most important independent outcome-influential factor (MIOIF) in the NIHSS ≥16 sub-group. The diabetes history and baseline NIHSS score were the MIOIF in the age ≥80-year sub-group.ConclusionsThe non-standard dose group (0.6 mg/kg ≤ dose < 0.9 mg/kg) shows no difference in safety and effectiveness than the standard dose group (0.9 mg/kg) in our study. The standard dose should be considered first according to current evidence and Guidelines, but the non-standard dose (0.6 mg/kg ≤ dose < 0.9 mg/kg) might be an option in the actual diagnosis and treatment process considering the patient's clinical profile and financial condition.
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14
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Zhang BB, Tang YG, Mei QS, Li XY, Lu K. Inhibiting creep in nanograined alloys with stable grain boundary networks. Science 2022; 378:659-663. [DOI: 10.1126/science.abq7739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Creep, the time-dependent deformation of materials stressed below the yield strength, is responsible for a great number of component failures at high temperatures. Because grain boundaries (GBs) in materials usually facilitate diffusional processes in creep, eliminating GBs is a primary approach to resisting high-temperature creep in metals, such as in single-crystal superalloy turbo blades. We report a different strategy to inhibiting creep by use of stable GB networks. Plastic deformation triggered structural relaxation of high-density GBs in nanograined single-phased nickel-cobalt-chromium alloys, forming networks of stable GBs interlocked with abundant twin boundaries. The stable GB networks effectively inhibit diffusional creep processes at high temperatures. We obtained an unprecedented creep resistance, with creep rates of ~10
–7
per second under gigapascal stress at 700°C (~61% melting point), outperforming that of conventional superalloys.
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Affiliation(s)
- B. B. Zhang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Y. G. Tang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China
| | - Q. S. Mei
- School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China
| | - X. Y. Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - K. Lu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
- Liaoning Academy of Materials, Shenyang 110004, China
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15
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Gisbert E, Moreira DC, Mozanzadeh MT, Lu K. Editorial: Rising stars in aquatic physiology: 2022. Front Physiol 2022; 13:1081961. [DOI: 10.3389/fphys.2022.1081961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 10/31/2022] [Indexed: 11/11/2022] Open
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16
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Zhu H, Liu Q, Xu H, Mo M, Wang Z, Lu K, Zhou J, Chen J, Zheng X, Ye J, Ge X, Luo H, Song S, Chen Y, Zhao K. 132TiP Dose escalation of chemoradiotherapy in locally advanced esophageal squamous cell carcinoma based on positron emission tomography response: A phase III, open-label, randomized, controlled trial (ESO-Shanghai 12). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
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17
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Lu K, Rothe M, Floegel U, Kotzka J, Oehler D, Roden M, Kelm M, Szendroedi J, Westenfeld R. Chronic insulin resistance deteriorates cardiac mitochondrial quality control in a mouse model of SEC-NAFLD-IR. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Insulin resistance and nonalcoholic fatty liver disease (NAFLD) both relate to cardiovascular mortality. Using a mouse model of chronic lipid overload and secondary-NAFLD-induced insulin resistance (SEC-NAFLD-IR), we recently deciphered that SEC-NAFLD-IR already at young age provoked myocardial lipotoxicity with reduced mitochondrial efficiency and increased vulnerability to cardiac ischemia. However, long-term consequences of SEC-NAFLD-IR remain elusive.
Purpose
Here we aimed to elucidate the impact of long-term SEC-NAFLD-IR on multiple mitochondrial quality control (mQC) mechanisms in the heart and its consequences for cardiac function.
Methods
We studied 36 SEC-NAFLD-IR mice (72-week-old). For mechanistic experiments, we applied palmitate-induced insulin resistant murine HL-1 cells. Cardiac mitochondrial dynamics were measured via quantification of mitochondrial morphology and expression of mitochondrial fusion and fission factors (Opa1, Drp1, Fis1, Mfn 1 & 2). Mitophagy level was evaluated via immunofluorescence and protein expression of key mitophagy-related genes (Parkin, NIX, LC3). Mitochondrial biogenesis and mass were examined via quantitation of PGC-1α expression, mtDNA and citrate synthase activity.
Results
72-week-old SEC-NAFLD-IR mice exhibited 21% (p=0.001) and 32% (p<0.001) higher body weight and heart weight compared with controls. Along with elevated oxidative stress, hepatic lipid accumulation and inflammation, 6h-fasted SEC-NAFLD-IR mice were characterized by increased plasma glucose, insulin and cholesterol. SEC-NAFLD-IR mice displayed a cardiac phenotype with 21% higher left ventricular mass (normalized to body weight, p<0.001) and 6% lower ejection fraction compared to controls (73.5% SEM 0.90 vs 69.4% SEM 1.65, p=0.04). We found several advantageous mQC mechanisms suppressed in aged SEC-NAFLD-IR mice including long form OPA1-mediated mitochondrial fusion, Parkin- and NIX-mediated mitophagy. Likewise, mitochondrial biogenesis was suppressed in the aged insulin-resistant heart, which was connected to a 65% downregulation of PGC-1α1 expression (p=0.01). Interestingly, downregulation of cardiac PGC-1α1 in aged SEC-NAFLD-IR mice coincided with upregulation of PARIS, indicating the crucial participation of the Parkin/PARIS pathway in mQC of the insulin-resistant heart. In addition, induction of insulin resistance in murine HL-1 cardiomyocytes also led to increased mitochondrial fragmentation and decreased PGC-1α1 expression.
Conclusion
This study demonstrated that regulation of mitochondrial network and turnover is hampered by SEC-NAFLD-IR in the hearts of aged mice, which may contribute to hypertrophy and cardiac dysfunction in insulin resistance.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Collaborative Research Centre 1116 (German Research Foundation)
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Affiliation(s)
- K Lu
- University Hospital Duesseldorf, Division of Cardiology, Pulmonology and Vascular Medicine , Duesseldorf , Germany
| | - M Rothe
- Heinrich Heine University, Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research , Duesseldorf , Germany
| | - U Floegel
- Heinrich Heine University, Department of Molecular Cardiology, Medical Faculty , Duesseldorf , Germany
| | - J Kotzka
- Heinrich Heine University, Institute for Biochemistry and Pathobiochemistry, German Diabetes Center , Duesseldorf , Germany
| | - D Oehler
- University Hospital Duesseldorf, Division of Cardiology, Pulmonology and Vascular Medicine , Duesseldorf , Germany
| | - M Roden
- Heinrich Heine University, Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research , Duesseldorf , Germany
| | - M Kelm
- University Hospital Duesseldorf, Division of Cardiology, Pulmonology and Vascular Medicine , Duesseldorf , Germany
| | - J Szendroedi
- University Hospital of Heidelberg, Internal Medicine I and Clinical Chemistry , Heidelberg , Germany
| | - R Westenfeld
- University Hospital Duesseldorf, Division of Cardiology, Pulmonology and Vascular Medicine , Duesseldorf , Germany
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Lu K, Pedersen B, Rosa RL, Krogh-Johansen H, Conlon B, Muhlebach M. 503 Bacterial characteristics and metabolism of persistent methicillin-resistant Staphylococcus aureus infection. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)01193-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Hu X, Garcia E, Goossens A, Gozo M, Lee T, Liu X, Le B, Taylor Meadows K, Eto D, Yusuf I, Lu K, Michels T, Kasem M, Marby K, Rowbottom M, Osterhout R, Carter L. An orally bioavailable ENPP1-selective inhibitor demonstrates superior immune preservation effects over STING agonists and confers antitumor efficacy in combination with other therapies in syngeneic tumor models. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01133-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Hinchcliff E, Mosely A, Hull S, Westin S, Sood A, Schmeler K, Taylor J, Huang S, Sheth R, Lu K, Jazaeri A. 567P Phase Ib study of Intraperitoneal (IP) administration of nivolumab plus ipilimumab in patients with recurrent gynaecologic malignancies with peritoneal involvement. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Dirr M, Christensen R, Anvery N, Merkel E, Worley B, Harikumar V, Lu K, Evans S, Poon E, Alam M. LB984 Intralesional sodium thiosulfate as a reversal agent for calcium hydroxylapatite soft tissue filler: An in vitro and ex vivo comparison. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.1008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Techner J, Hooper M, Evans S, LeWitt T, Paller A, Lu K, Guitart J, Zhou X. 859 Skin tape strip proteomics in mycosis fungoides identifies tumor associated biomarkers. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Biyashev D, Siwicka Z, Demczuk M, Onay U, Evans S, Collins-McCallum N, Gianneschi N, Lu K. 577 Synthetic melanin nanoparticles improve wound healing. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ernst M, Evans S, Techner J, Rothbaum R, Christensen L, Onay U, Biyashev D, Demczuk M, Cooper K, Lu K. 839 Early biomarker identification for immune sensitization and prevention with oral vitamin D3. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Onay U, Xu D, Biyashev D, Demczuk M, Evans S, Podojil J, Miller S, Lu K. 793 The ”T” in cutaneous wound healing. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Li E, Zou XL, Xu LQ, Chu YQ, Feng X, Lian H, Liu HQ, Liu AD, Han MK, Dong JQ, Wang HH, Liu JW, Zang Q, Wang SX, Zhou TF, Huang YH, Hu LQ, Zhou C, Qu HX, Chen Y, Lin SY, Zhang B, Qian JP, Hu JS, Xu GS, Chen JL, Lu K, Liu FK, Song YT, Li JG, Gong XZ. Experimental Evidence of Intrinsic Current Generation by Turbulence in Stationary Tokamak Plasmas. Phys Rev Lett 2022; 128:085003. [PMID: 35275672 DOI: 10.1103/physrevlett.128.085003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 09/16/2021] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
High-β_{θe} (a ratio of the electron thermal pressure to the poloidal magnetic pressure) steady-state long-pulse plasmas with steep central electron temperature gradient are achieved in the Experimental Advanced Superconducting Tokamak. An intrinsic current is observed to be modulated by turbulence driven by the electron temperature gradient. This turbulent current is generated in the countercurrent direction and can reach a maximum ratio of 25% of the bootstrap current. Gyrokinetic simulations and experimental observations indicate that the turbulence is the electron temperature gradient mode (ETG). The dominant mechanism for the turbulent current generation is due to the divergence of ETG-driven residual flux of current. Good agreement has been found between experiments and theory for the critical value of the electron temperature gradient triggering ETG and for the level of the turbulent current. The maximum values of turbulent current and electron temperature gradient lead to the destabilization of an m/n=1/1 kink mode, which by counteraction reduces the turbulence level (m and n are the poloidal and toroidal mode number, respectively). These observations suggest that the self-regulation system including turbulence, turbulent current, and kink mode is a contributing mechanism for sustaining the steady-state long-pulse high-β_{θe} regime.
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Affiliation(s)
- Erzhong Li
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - X L Zou
- CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France
| | - L Q Xu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - Y Q Chu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
- University of Science and Technology of China, Hefei 230022, People's Republic of China
| | - X Feng
- University of Science and Technology of China, Hefei 230022, People's Republic of China
| | - H Lian
- University of California Los Angeles, Los Angeles, California 90095, USA
| | - H Q Liu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - A D Liu
- University of Science and Technology of China, Hefei 230022, People's Republic of China
| | - M K Han
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - J Q Dong
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - H H Wang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - J W Liu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
- University of Science and Technology of China, Hefei 230022, People's Republic of China
| | - Q Zang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - S X Wang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - T F Zhou
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - Y H Huang
- Advanced Energy Research Center, Shenzhen University, Shenzhen 518060, People's Republic of China
| | - L Q Hu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - C Zhou
- University of Science and Technology of China, Hefei 230022, People's Republic of China
| | - H X Qu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
- University of Science and Technology of China, Hefei 230022, People's Republic of China
| | - Y Chen
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
- University of Science and Technology of China, Hefei 230022, People's Republic of China
| | - S Y Lin
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - B Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - J P Qian
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - J S Hu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - G S Xu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - J L Chen
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - K Lu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - F K Liu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - Y T Song
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - J G Li
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - X Z Gong
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
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Hua G, Zhang X, Zhang M, Wang Q, Chen X, Yu R, Bao H, Liu J, Wu X, Shao Y, Liang B, Lu K. Real-world circulating tumor DNA analysis depicts resistance mechanism and clonal evolution in ALK inhibitor-treated lung adenocarcinoma patients. ESMO Open 2022; 7:100337. [PMID: 35123209 PMCID: PMC8818928 DOI: 10.1016/j.esmoop.2021.100337] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/01/2021] [Accepted: 11/15/2021] [Indexed: 12/11/2022] Open
Abstract
Background Sequential treatment with different generations of anaplastic lymphoma kinase (ALK) inhibitors have been widely applied to ALK-positive lung cancer; however, resistance mutations inevitably developed. Further characterization of ALK resistance mutations may provide key guidance to subsequent therapies. Here we explored the emergence of secondary ALK mutations during sequential ALK tyrosine kinase inhibitor (TKI) treatment in a real-world study of Chinese lung adenocarcinoma (ADC) patients. Methods A clinical-genomic database was queried for lung ADC patients with at least one ALK inhibitor treatment and at least one plasma sample collected following ALK inhibitor treatment. Targeted genome profiling was performed with a 139-gene panel in baseline tumor tissue and serial plasma samples of patients. Results A total of 116 patients met inclusion criteria. ALK G1202R was more common in patients with echinoderm microtubule-associated protein-like 4 (EML4)-ALK v3 fusion, whereas ALK L1196M was more common in v1. TP53 mutant patients were significantly associated with harboring multiple ALK resistance mutations (P = 0.03) and v3+/TP53 mutant patients had the highest rate of multiple ALK resistance mutations. The sequential use of ALK TKI led to an increased incidence of concurrent ALK mutations along the lines of therapies. Alectinib had a lower rate (9%) harboring ALK resistance mutation as first-line ALK TKI compared with crizotinib (36%). ALK compound mutations identified included ALK D1203N/L1196M, ALK G1202R/L1196M, and ALK G1202R/F1174C, which may be lorlatinib resistant. Using paired pretreatment and post-treatment samples, we identified several ALK-independent resistance-related genetic alterations, including PTPRD and CNKN2A/B loss, MYC, MYCN and KRAS amplification, and EGFR19del. Conclusions Sequential postprogression plasma profiling revealed that increased lines of ALK inhibitors can accelerate the accumulation of ALK resistance mutations and may lead to treatment-refractory compound ALK mutations. The selection for optimal first-line TKI is very important to achieve a more efficacious long-term strategy and prevent the emergence of on-target resistance, which may provide guidance for clinical decision making. ALK resistance mutations were differentially enriched in the setting of EML4-ALK v1/v3 and TP53 status. Serial liquid biopsies NGS depicted accumulation of multiple ALK secondary mutations during sequential ALK treatments. Several lorlatinib-resistant ALK compound mutations and ALK-independent resistance genetic alterations were identified.
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Affiliation(s)
- G Hua
- Department of Cardiothoracic Surgery, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China; Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, Ningbo, China
| | - X Zhang
- Respiratory and Critical Care Medicine, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - M Zhang
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Q Wang
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - X Chen
- Geneseeq Research Institute, Nanjing Geneseeq Technology Inc., Nanjing, China
| | - R Yu
- Geneseeq Research Institute, Nanjing Geneseeq Technology Inc., Nanjing, China
| | - H Bao
- Geneseeq Research Institute, Nanjing Geneseeq Technology Inc., Nanjing, China
| | - J Liu
- Geneseeq Research Institute, Nanjing Geneseeq Technology Inc., Nanjing, China
| | - X Wu
- Geneseeq Research Institute, Nanjing Geneseeq Technology Inc., Nanjing, China
| | - Y Shao
- Geneseeq Research Institute, Nanjing Geneseeq Technology Inc., Nanjing, China; School of Public Health, Nanjing Medical University, Nanjing, China
| | - B Liang
- Department of Respiratory Medicine, Foshan Hospital of Traditional Chinese Medicine Affiliated to Guangzhou University of Traditional Chinese Medicine, Foshan, China.
| | - K Lu
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
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Doumtsis N, Patel S, Ramchand J, Lu K, Srivastava P, Patel S, Burrell L. Circulating Angiotensin Converting Enzyme 2 Activity in Hospitalised Patients With Acute Heart Failure. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Jin Z, Li X, Lu K. Formation of Stable Schwarz Crystals in Polycrystalline Copper at the Grain Size Limit. Phys Rev Lett 2021; 127:136101. [PMID: 34623842 DOI: 10.1103/physrevlett.127.136101] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 08/10/2021] [Indexed: 06/13/2023]
Abstract
A prototype Schwarz crystal (SC) structure of dividing-space minimal grain boundaries (GBs) constrained by coherent twin boundaries (CTBs) was recently discovered in extremely fine-grained polycrystalline Cu. In this Letter, constraining effects of 3D CTB network on the formation and thermostability of SC are addressed via atomistic simulations. GB migration and evolution of CTB network trigger formation of SC diamond. CTB constraints are critical to generate GBs of zero mean curvature underlying vanishing capillary pressure, and to counterbalance the elastic driving forces of lattice. GB motion can be suppressed at temperatures close to the melting point with GB aperture down to 3 nm.
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Affiliation(s)
- Zhaohui Jin
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Xiuyan Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - K Lu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
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Da J, Ali K, Lu K, Lou H, Qiu Y, Shan J, Wu L. Off-label use of dupilumab for the treatment of moderate to severe atopic dermatitis in children aged below 6 years of age: a case series. Clin Exp Dermatol 2021; 47:423-425. [PMID: 34482550 DOI: 10.1111/ced.14925] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 08/28/2021] [Accepted: 09/01/2021] [Indexed: 11/27/2022]
Affiliation(s)
- J Da
- Department of, Dermatology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - K Ali
- Department of Dermatology, Affiliated Hangzhou First People's Hospital, Zhejiang Chinese Medical University, Hangzhou, China
| | - K Lu
- Department of, Oncological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - H Lou
- Department of Dermatology, Affiliated Hangzhou First People's Hospital, Zhejiang Chinese Medical University, Hangzhou, China
| | - Y Qiu
- Department of Dermatology, Affiliated Hangzhou First People's Hospital, Zhejiang Chinese Medical University, Hangzhou, China
| | - J Shan
- Department of Dermatology, Affiliated Hangzhou First People's Hospital, Zhejiang Chinese Medical University, Hangzhou, China
| | - L Wu
- Department of, Dermatology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Xu W, Zhang B, Li XY, Lu K. Suppressing atomic diffusion with the Schwarz crystal structure in supersaturated Al-Mg alloys. Science 2021; 373:683-687. [PMID: 34353952 DOI: 10.1126/science.abh0700] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Accepted: 07/01/2021] [Indexed: 12/24/2022]
Abstract
High atomic diffusivity in metals enables substantial tuneability of their structure and properties by tailoring the diffusional processes, but this causes their customized properties to be unstable at elevated temperatures. Eliminating diffusive interfaces by fabricating single crystals or heavily alloying helps to address this issue but does not inhibit atomic diffusion at high homologous temperatures. We discovered that the Schwarz crystal structure was effective at suppressing atomic diffusion in a supersaturated aluminum-magnesium alloy with extremely fine grains. By forming these stable structures, diffusion-controlled intermetallic precipitation from the nanosized grains and their coarsening were inhibited up to the equilibrium melting temperature, around which the apparent across-boundary diffusivity was reduced by about seven orders of magnitude. Developing advanced engineering alloys using the Schwarz crystal structure may lead to useful properties for high-temperature applications.
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Affiliation(s)
- W Xu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - B Zhang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - X Y Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China.
| | - K Lu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China.
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32
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Lu K, Liu E, Zhao R, Zhang H, Tian H. Star Sensor Denoising Algorithm Based on Edge Protection. Sensors (Basel) 2021; 21:s21165255. [PMID: 34450698 PMCID: PMC8398920 DOI: 10.3390/s21165255] [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] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/27/2021] [Accepted: 07/30/2021] [Indexed: 11/16/2022]
Abstract
Single-pixel noise commonly appearing in a star sensor can cause an unexpected error in centroid extraction. To overcome this problem, this paper proposes a star image denoising algorithm, named Improved Gaussian Side Window Filtering (IGSWF). Firstly, the IGSWF algorithm uses four special triangular Gaussian subtemplates for edge protection. Secondly, it exploits a reconstruction function based on the characteristic of stars and noise. The proposed IGSWF algorithm was successfully verified through simulations and evaluated in a star sensor. The experimental results indicated that the IGSWF algorithm performed better in preserving the shape of stars and eliminating the single-pixel noise and the centroid estimation error (CEE) value after using the IGSWF algorithm was eight times smaller than the original value, six times smaller than that after traditional window filtering, and three times smaller than that after the side window filtering.
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Affiliation(s)
- Kaili Lu
- Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610000, China; (K.L.); (R.Z.); (H.Z.); (H.T.)
- Key Laboratory of Science and Technology on Space Optoelectronic Precision Measurement, Chinese Academy of Sciences, Chengdu 610000, China
| | - Enhai Liu
- Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610000, China; (K.L.); (R.Z.); (H.Z.); (H.T.)
- Key Laboratory of Science and Technology on Space Optoelectronic Precision Measurement, Chinese Academy of Sciences, Chengdu 610000, China
- Correspondence:
| | - Rujin Zhao
- Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610000, China; (K.L.); (R.Z.); (H.Z.); (H.T.)
- Key Laboratory of Science and Technology on Space Optoelectronic Precision Measurement, Chinese Academy of Sciences, Chengdu 610000, China
| | - Hui Zhang
- Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610000, China; (K.L.); (R.Z.); (H.Z.); (H.T.)
- Key Laboratory of Science and Technology on Space Optoelectronic Precision Measurement, Chinese Academy of Sciences, Chengdu 610000, China
| | - Hong Tian
- Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610000, China; (K.L.); (R.Z.); (H.Z.); (H.T.)
- Key Laboratory of Science and Technology on Space Optoelectronic Precision Measurement, Chinese Academy of Sciences, Chengdu 610000, China
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Lu K, Yin Y, Li C, Jin Y, Shan HQ. Efficacy of annual zoledronic acid in initial percutaneous kyphoplasty patients with osteoporotic vertebral compression fractures: a 3-year follow-up study. Osteoporos Int 2021; 32:1429-1439. [PMID: 33462653 DOI: 10.1007/s00198-020-05816-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 12/30/2020] [Indexed: 12/30/2022]
Abstract
UNLABELLED This study investigated the efficacy of annual zoledronic acid (ZOL) administration against previously treated recompression vertebral fractures (RVF) and new vertebral fractures (NVF) in initial percutaneous kyphoplasty (PKP) patients with osteoporotic vertebral compression fractures (OVCF) over a 3-year follow-up period. INTRODUCTION Although PKP achieves a satisfactory outcome, previously treated RVF and NVF can limit its effectiveness. The annual infusion of ZOL over 3 years can improve fracture protection, particularly in the vertebrae. We hypothesized that ZOL can reduce the incidence of RVFs and/or NVFs, and improve the clinical outcomes of PKP. METHODS This was a placebo-controlled, double-blind prospective trial of 154 PKP patients (mean age: 70 years) with OVCFs. Patients were randomly assigned to receive a single infusion of ZOL (5 mg) or placebo (78 ZOL vs. 76 placebo) at 1 week, 12 months, and 24 months after surgery. Patients were followed-up for 36 months. RESULTS ZOL treatment lowered the risk of RVF by ~ 65% over the 36-month period when compared to placebo controls (6.41% in ZOL vs. 18.42% in placebo groups; relative risk, 0.35; 95% CI, 0.13 to 0.92). ZOL also reduced the risk of NVF by ~ 73% (3.85% in ZOL vs. 14.47% in placebo groups; relative risk, 0.27; 95% CI, 0.08 to 0.92). ZOL also significantly reduced the vertebral height lost rate (HLR) at 12, 24, and 36 months. ZOL also improved the visual analog scale (VAS), Oswestry disability index (ODI) scores, and bone mineral density (BMD). CONCLUSION Annual ZOL administration significantly lowers the risk of RVFs and NVFs, improving the clinical outcome of initial PKP in patients with OVCFs over a 3-year follow-up period. TRIAL REGISTRATION ChiCTR2000029307.
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Affiliation(s)
- K Lu
- Department of Joint Surgery, Affiliated Kunshan Hospital of Jiangsu University, Suzhou, 215300, Jiangsu, China
| | - Y Yin
- Department of Spinal Surgery, Affiliated Kunshan Hospital of Jiangsu University, No. 91 West of Qianjin Road, Suzhou, 215300, Jiangsu, China
| | - C Li
- Department of Orthopaedics, Affiliated Kunshan Hospital of Jiangsu University, Suzhou, 215300, Jiangsu, China
| | - Y Jin
- Department of Spinal Surgery, Affiliated Kunshan Hospital of Jiangsu University, No. 91 West of Qianjin Road, Suzhou, 215300, Jiangsu, China
| | - H-Q Shan
- Department of Spinal Surgery, Affiliated Kunshan Hospital of Jiangsu University, No. 91 West of Qianjin Road, Suzhou, 215300, Jiangsu, China.
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Wang YQ, Wang R, Shi D, Lu K, Jin D, Xu L, Fan GH, Shen JK, Gong JP, Qian MH. [Primary malignant peripheral nerve sheath tumor in left orbit: a case report]. Zhonghua Zhong Liu Za Zhi 2021; 43:509-510. [PMID: 33902216 DOI: 10.3760/cma.j.cn112152-20200428-00386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y Q Wang
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - R Wang
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - D Shi
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - K Lu
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - D Jin
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - L Xu
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - G H Fan
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - J K Shen
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - J P Gong
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - M H Qian
- Department of Radiology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China
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Techner J, Rothbaum R, Christensen L, Evans S, Onay U, Biyashev D, Demczuk M, Cooper K, Lu K. 439 Oral 25-hydroxyvitamin D3 reduces chemical-induced skin inflammation in humans. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Onay U, Biyashev D, Xu D, Demczuk M, Evans S, Techner J, Miller S, Lu K. 629 PLGA-immune modifying particles as a potential therapy for treating injured skin. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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37
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Wu YF, Lu K, Girgis C, Preda M, Preda V. Postpartum bilateral sacral stress fracture without osteoporosis-a case report and literature review. Osteoporos Int 2021; 32:623-631. [PMID: 33439310 DOI: 10.1007/s00198-020-05788-0] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 12/07/2020] [Indexed: 10/22/2022]
Abstract
PURPOSE Sacral stress fractures are rare complications which can arise during pregnancy or in the early postpartum period. We report a case and discuss the findings of a confirmed postpartum sacral stress fracture in a 39-year-old multiparous woman and review previous case reports in the literature of sacral stress fracture related to pregnancy. METHODS A review of the literature was conducted to examine the main characteristics of sacral stress fractures related to pregnancy. The Ovid/Medline, Embase and Google Scholar databases were searched with the inclusion criteria: human studies, English language, intrapartum, postpartum (within 6 months of parturition), sacrum and stress fracture. Our exclusion criteria included pubic fractures, vertebral fractures and non-English articles. The search terms included "stress fracture", "postpartum", "pregnancy", "atraumatic" and the wildcard "sacr*". Thirty-four cases were found and summarised in Table 2. RESULTS A total of 65% of patients had onset of symptoms postpartum. Most patients did not have risk factors for sacral stress fractures including macrosomia, excessive pregnancy weight gain, heparin exposure, rapid vaginal delivery or predisposition to accelerated osteoporosis. Lumbar radiculopathy can be a feature of sacral stress fracture and it is more common (17.6%) than reported in the literature (2%). MRI is the preferred imaging modality for its safety profile in pregnancy and high sensitivity. A total of 70% reported normal bone mineral density (BMD). The mainstay treatment for sacral stress fractures includes relative bed rest, analgesia and modified weight-bearing exercises. Most patients have favourable outcome with complete symptom resolution. CONCLUSION Sacral stress fractures in the absence of osteoporosis are rare complications of pregnancy that can present with lumbar radiculopathy. Conservative management often produces good clinical outcomes.
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Affiliation(s)
- Y F Wu
- Department of Endocrinology, Macquarie University Hospital, Sydney, NSW, Australia.
| | - K Lu
- Doctors-In-Training, Macquarie University Hospital, Sydney, NSW, Australia
| | - C Girgis
- Department of Endocrinology, Royal North Shore Hospital, Sydney, NSW, Australia
| | - M Preda
- I-MED Radiology, Sydney, NSW, Australia
| | - V Preda
- Department of Endocrinology, Macquarie University Hospital, Sydney, NSW, Australia
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Lu K, Yang H, Xue H. Investigating the four-level inquiry continuum on college students' higher order thinking and peer interaction tendencies. IJIL 2021. [DOI: 10.1504/ijil.2021.10041576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Lu K, Yang H, Xue H. Investigating the four-level inquiry continuum on college students' higher order thinking and peer interaction tendencies. IJIL 2021. [DOI: 10.1504/ijil.2021.118192] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Tang B, Cheng Y, Li Y, Li W, Ma Y, Zhou Q, Lu K. Adipokinetic hormone enhances CarE-mediated chlorpyrifos resistance in the brown planthopper, Nilaparvata lugens. Insect Mol Biol 2020; 29:511-522. [PMID: 32686884 DOI: 10.1111/imb.12659] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 07/07/2020] [Accepted: 07/09/2020] [Indexed: 06/11/2023]
Abstract
Adipokinetic hormone (AKH), the principal stress-responsive neurohormone in insects, has been implicated in insect responses to insecticides. However, the functionality of AKH and its mode of signalling in insecticide resistance are unknown. Herein, we demonstrated that the enhanced activity of carboxylesterases (CarEs) is involved in the chlorpyrifos resistance in Nilaparvata lugens [brown planthopper (BPH)]. Chlorpyrifos exposure significantly induced the expression of AKH and its receptor AKHR in the susceptible BPH (Sus), and these two AKH signalling genes were over-expressed in the chlorpyrifos-resistant strain (Res) compared to Sus. RNA interference (RNAi) against AKH or AKHR decreased the CarE activity and suppressed the BPH's resistance to chlorpyrifos in Res. Conversely, AKH peptide injection elevated the CarE activity and enhanced the BPH's survival against chlorpyrifos in Sus. Furthermore, five CarE genes were identified to be positively affected by the AKH pathway using RNAi and AKH injection. Among these CarE genes, CarE and Esterase E4-1 were found to be over-expressed in Res compared to Sus, and knockdown of either gene decreased the BPH's resistance to chlorpyrifos. In conclusion, AKH plays a role in enhancing chlorpyrifos resistance in the BPH through positive influence on the expression of CarE genes and CarE enzyme activity.
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Affiliation(s)
- B Tang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Y Cheng
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Y Li
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - W Li
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Y Ma
- School of Agriculture, Sun Yat-sen University, Guangzhou, China
| | - Q Zhou
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - K Lu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
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Li XY, Jin ZH, Zhou X, Lu K. Constrained minimal-interface structures in polycrystalline copper with extremely fine grains. Science 2020; 370:831-836. [DOI: 10.1126/science.abe1267] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 10/08/2020] [Indexed: 12/24/2022]
Abstract
Metals usually exist in the form of polycrystalline solids, which are thermodynamically unstable because of the presence of disordered grain boundaries. Grain boundaries tend to be eliminated through coarsening when heated or by transforming into metastable amorphous states when the grains are small enough. Through experiments and molecular dynamics simulations, we discovered a different type of metastable state for extremely fine-grained polycrystalline pure copper. After we reduced grain sizes to a few nanometers with straining, the grain boundaries in the polycrystals evolved into three-dimensional minimal-interface structures constrained by twin boundary networks. This polycrystalline structure that underlies what we call a Schwarz crystal is stable against grain coarsening, even when close to the equilibrium melting point. The polycrystalline samples also exhibit a strength in the vicinity of the theoretical value.
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Affiliation(s)
- X. Y. Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Z. H. Jin
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
- School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China
| | - X. Zhou
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - K. Lu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
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Oehler D, Goedecke A, Spychala A, Lu K, Gerdes N, Ruas J, Kelm M, Szendroedi J, Westenfeld R. Full-length-transcriptomic analysis in mice and human heart using Single-Molecule Real-time Sequencing (SMRT) identified 15 novel isoforms and a novel promoter region of PGC1-alpha. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Alternative splicing is a process by which exons within a pre-mRNA are joined or skipped, resulting in isoforms being encoded by a single gene. Alternative Splicing affecting transcription factors may have substantial impact on cellular dynamics. The PPARG Coactivator 1 Alpha (PGC1-α), is a major modulator in energy metabolism. Data from murine skeletal muscle revealed distinctive isoform patterns giving rise to different phenotypes, i.e. mitogenesis and hypertrophy. Here, we aimed to establish a complete dataset of isoforms in murine and human heart applying single-molecule real-time (SMRT)-sequencing as novel approach to identify transcripts without need for assembly, resulting in true full-length sequences. Moreover, we aimed to unravel functional relevance of the various isoforms during experimental ischemia reperfusion (I/R).
Methods
RNA-Isolation was performed in murine (C57Bl/6J) or human heart tissue (obtained during LVAD-surgery), followed by library preparation and SMRT-Sequencing. Bioinformatic analysis was done using a modified IsoSeq3-Pipeline and OS-tools. Identification of PGC1-α isoforms was fulfilled by similarity search against exonic sequences within the full-length, non-concatemere (FLNC) reads. Isoforms with Open-Reading-Frame (ORF) were manually curated and validated by PCR and Sanger-Sequencing. I/R was induced by ligature of the LAD for 45 min in mice on standard chow as well as on high-fat-high-sucrose diet. Area At Risk (AAR) and remote tissue were collected three and 16 days after I/R or sham-surgery (n=4 per time point). Promotor patterns were analyzed by qPCR.
Results
Deciphering the full-length transcriptome of murine and human heart resulted in ∼60000 Isoforms with 99% accuracy on mRNA-sequence. Focusing on murine PGC1-α-isoforms we discovered and verified 15 novel transcripts generated by hitherto unknown splicing events. Additionally, we identified a novel Exon 1 originating between the known promoters followed by a valid ORF, suggesting the discovery of a novel promoter. Remarkably, we found a homologous novel Exon1 in human heart, suggesting conservation of the postulated promoter.
In I/R the AAR exhibited a significant lower expression of established and novel promoters compared to remote under standard chow 3d post I/R. 16d post I/R, the difference between AAR & Remote equalized in standard chow while remaining under High-Fat-Diet.
Conclusion
Applying SMRT-technique, we generated the first time a complete full-length-transcriptome of the murine and human heart, identifying 15 novel potentially coding transcripts of PGC1-α and a novel exon 1. These transcripts are differentially regulated in experimental I/R in AAR and remote myocardium, suggesting transcriptional regulation and alternative splicing modulating PGC1-α function in heart. Differences between standard chow and high fat diet suggest impact of impaired glucose metabolism on regulatory processes after myocardial infarction.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): Collaborative Research Centre 1116 (German Research Foundation)
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Affiliation(s)
- D Oehler
- University Hospital Duesseldorf, Division of Cardiology, Pulmonology, and Vascular Medicine, Duesseldorf, Germany
| | - A Goedecke
- Heinrich Heine University, Department of Cardiovascular Physiology, Duesseldorf, Germany
| | - A Spychala
- Heinrich Heine University, Department of Cardiovascular Physiology, Duesseldorf, Germany
| | - K Lu
- University Hospital Duesseldorf, Division of Cardiology, Pulmonology, and Vascular Medicine, Duesseldorf, Germany
| | - N Gerdes
- University Hospital Duesseldorf, Division of Cardiology, Pulmonology, and Vascular Medicine, Duesseldorf, Germany
| | - J Ruas
- Karolinska Institutet, Molecular and Cellular Exercise Physiology, Department of Physiology and Pharmacology, Stockholm, Sweden
| | - M Kelm
- University Hospital Duesseldorf, Division of Cardiology, Pulmonology, and Vascular Medicine, Duesseldorf, Germany
| | - J Szendroedi
- Heinrich Heine University, Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research, Duesseldorf, Germany
| | - R Westenfeld
- University Hospital Duesseldorf, Division of Cardiology, Pulmonology, and Vascular Medicine, Duesseldorf, Germany
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Xie P, Li F, Zhao S, Li Q, Liu J, Lu K, Zhang Y, Li T, Zhou J, Ke Z, Chen X. LB959 Lesion location for melanoma pathology analysis. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.05.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Biyashev D, Onay U, Evans S, Demczuk M, Lu K. 614 A novel treatment for skin repair using a combination of a MR antagonist + Vitamin D3. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
Inherent thermal and mechanical instability of nanograined materials bottlenecks their processing and technological applications. In addition to the traditional stabilization strategy, which is based on alloying, grain boundary relaxation was recently found to be effective in stabilizing nanograined pure metals. Grain boundary relaxation can be induced by deforming very fine nanograins below a critical size, typically several tens of nanometers. Here, we found that rapid heating may trigger intensive boundary relaxation of pure Cu nanograins with sizes up to submicrometers, a length scale with notable instability in metals. The rapidly heated Cu nanograins remain stable at temperatures as high as 0.6 T m (melting point), even higher than the recrystallization temperature of deformed coarse-grained Cu. The thermally induced grain boundary relaxation originating from the generation of high-density nanotwins offers an alternative approach to stabilizing nanostructured materials.
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Affiliation(s)
- X.Y. Li
- Corresponding author. (X.Y.L.); (K.L.)
| | | | - K. Lu
- Corresponding author. (X.Y.L.); (K.L.)
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Lu K, Liu L, Xu X, Zhao F, Deng J, Tang X, Wang X, Zhao BQ, Zhang X, Zhao Y. ADAMTS13 ameliorates inflammatory responses in experimental autoimmune encephalomyelitis. J Neuroinflammation 2020; 17:67. [PMID: 32075652 PMCID: PMC7029584 DOI: 10.1186/s12974-020-1713-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 01/13/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND ADAMTS13 (a disintegrin and metalloprotease with a thrombospondin type 1 motif, member 13) plays a vital role in preventing microvascular thrombosis and inflammation. Reduced ADAMTS13 levels in plasma have been detected in multiple sclerosis (MS) patients. In the present study, we have determined the role of ADAMTS13 in the disease progression of MS using a mouse model of experimental autoimmune encephalomyelitis (EAE). METHODS Female C57BL/6 mice were immunized with MOG35-55 peptide and then treated with ADAMTS13 or vehicle in preventive and therapeutic settings. Mice were analyzed for clinical deficit, white matter demyelination and inflammatory cell infiltration. To explore the underlying mechanism, VWF expression and blood-spinal cord barriers (BSCB) were determined. RESULTS Plasma ADAMTS13 activity was suppressed in EAE mice. ADAMTS13-treated EAE mice exhibited an ameliorated disease course, reduced demyelination, and decreased T lymphocyte, neutrophil and monocyte infiltration into the spinal cord. Consistently, ADAMTS13 treatment reduced VWF levels and inhibited BSCB breakdown in the spinal cords of EAE mice. However, leukocytes in the blood and spleen of EAE mice remained unaffected by ADAMTS13 administration. CONCLUSION Our results demonstrate that ADAMTS13 treatment ameliorates inflammatory responses, demyelination and disease course in EAE mice. Therefore, our study suggests that ADAMTS13 may represent a potential therapeutic strategy for MS patients.
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Affiliation(s)
- Kaili Lu
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Xuhui District, Shanghai, China
| | - Lan Liu
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Xuhui District, Shanghai, China
| | - Xiaofeng Xu
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Xuhui District, Shanghai, China
| | - Fei Zhao
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Xuhui District, Shanghai, China
| | - Jiangshan Deng
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Xuhui District, Shanghai, China
| | - Xin Tang
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Xuhui District, Shanghai, China
| | - Xiuzhe Wang
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Xuhui District, Shanghai, China
| | - Bing-Qiao Zhao
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, China
| | - Xiaojie Zhang
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Xuhui District, Shanghai, China.
| | - Yuwu Zhao
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Xuhui District, Shanghai, China.
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Lu K, Dong JL, Fan WJ. Twist1/2 activates MMP2 expression via binding to its promoter in colorectal cancer. Eur Rev Med Pharmacol Sci 2019; 22:8210-8219. [PMID: 30556860 DOI: 10.26355/eurrev_201812_16514] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study aimed to characterize the effect of Twist2 on epithelial-to-mesenchymal transition (EMT) and the invasive potential of colorectal cancer (CRC) cells and to explore the mechanisms underlying the regulative effect of Twist1 and Twist2 on matrix metalloproteinase 2 (MMP2) expression in CRC. PATIENTS AND METHODS Data mining was performed in colorectal cancer cohort (COADREAD) in the Cancer Genome Atlas (TCGA-COADREAD). CRC LoVo and HCT116 cells were used as in vitro cell models. RESULTS CRC tumors with lymphatic invasion (N = 102) had a significantly higher expression of TWIST1 (p = 0.01) and TWIST2 (p = 0.02) than the lymphatic invasion negative cases (N = 228). TWIST2 overexpression enhanced EMT and the invasive potential of the CRC LoVo and HCT116 cells, while TWIST2 knockdown reversed the EMT process and weakened the invasive potential of the cells. TWIST1 and TWIST2 were co-upregulated with MMP2 and MMP9 in COADREAD cohort. TWIST1 or TWIST2 overexpression significantly elevated nuclear β-catenin accumulation, which is a known signaling pathway elevating MMP2 and MMP9 expression. More importantly, we found that both Twist1 and Twist2 could transcriptionally activate MMP2 via directly binding to its promoter. However, this mechanism was not observed in the MMP9 promoter. CONCLUSIONS TWIST1/2 is associated with lymphatic invasion in CRC. TWIST2 upregulation enhances EMT and the invasive potential of CRC cells. TWIST1/2 can enhance the Wnt/β-catenin signaling pathway in CRC cells. In addition, Twist1/2 can bind to the MMP2 promoter and promote its transcription.
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Affiliation(s)
- K Lu
- Department of Digestive Diseases, Zhoukou Central hospital, Zhoukou, Henan, China.
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Zhang X, Chen S, Lu K, Wang F, Deng J, Xu Z, Wang X, Zhou Q, Le W, Zhao Y. Verapamil Ameliorates Motor Neuron Degeneration and Improves Lifespan in the SOD1 G93A Mouse Model of ALS by Enhancing Autophagic Flux. Aging Dis 2019; 10:1159-1173. [PMID: 31788329 PMCID: PMC6844595 DOI: 10.14336/ad.2019.0228] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [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: 11/20/2018] [Accepted: 02/28/2019] [Indexed: 12/12/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a progressive, paralytic disorder caused by selective degeneration of motor neurons in the brain and spinal cord. Our previous studies indicated that abnormal protein aggregation and dysfunctional autophagic flux might contribute to the disease pathogenesis. In this study, we have detected the role of the Ca2+ dependent autophagic pathway in ALS by using the L-type channel Ca2+ blocker, verapamil. We have found that verapamil significantly delayed disease onset, prolonged the lifespan and extended disease duration in SOD1G93A mice. Furthermore, verapamil administration rescued motor neuron survival and ameliorated skeletal muscle denervation in SOD1G93A mice. More interestingly, verapamil significantly reduced SOD1 aggregation and improved autophagic flux, which might be mediated the inhibition of calpain 1 activation in the spinal cord of SOD1G93A mice. Furthermore, we have demonstrated that verapamil reduced endoplasmic reticulum stress and suppressed glia activation in SOD1G93A mice. Collectively, our study indicated that verapamil is neuroprotective in the ALS mouse model and the Ca2+-dependent autophagic pathway is a possible therapeutic target for the treatment of ALS.
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Affiliation(s)
- Xiaojie Zhang
- 1Department of Neurology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Sheng Chen
- 2Department of Neurology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Kaili Lu
- 1Department of Neurology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Feng Wang
- 1Department of Neurology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Jiangshan Deng
- 1Department of Neurology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Zhouwei Xu
- 1Department of Neurology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Xiuzhe Wang
- 1Department of Neurology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Qinming Zhou
- 2Department of Neurology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Weidong Le
- 3Liaoning Provincial Center for Clinical Research on Neurological Diseases, the First Affiliated Hospital, Dalian Medical University, Dalian, China.,4Liaoning Provincial Kay Laboratory for Research on the Pathogenic Mechanisms of Neurological Diseases, the First Affiliated Hospital, Dalian Medical University, Dalian, China.,5Collaborative Innovation Center for Brain Science, the First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Yuwu Zhao
- 1Department of Neurology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China
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Lu K, Opsomer C, Abajue U, Hwang G, Paranjpe R, Zaghloul H, Abughosh S, Trivedi M. Medication adherence of oral endocrine therapy in breast cancer patients in a large academic medical center. Res Social Adm Pharm 2019. [DOI: 10.1016/j.sapharm.2019.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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50
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Sun Q, Liu T, Liu P, Lu K, Zhang N, Zhu Y. UBQLN1-Mediated Stabilization of USP7 Promotes Radioresistance of Breast Cancer Cells. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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