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Gao Y, Hu Y, Xu S, Liang H, Lin H, Yin TH, Zhao K. Characterisation of the mitochondrial genome and phylogenetic analysis of Toxocara apodemi (Nematoda: Ascarididae). J Helminthol 2024; 98:e33. [PMID: 38618902 DOI: 10.1017/s0022149x24000221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
We first sequenced and characterised the complete mitochondrial genome of Toxocara apodeme, then studied the evolutionary relationship of the species within Toxocaridae. The complete mitochondrial genome was amplified using PCR with 14 specific primers. The mitogenome length was 14303 bp in size, including 12 PCGs (encoding 3,423 amino acids), 22 tRNAs, 2 rRNAs, and 2 NCRs, with 68.38% A+T contents. The mt genomes of T. apodemi had relatively compact structures with 11 intergenic spacers and 5 overlaps. Comparative analyses of the nucleotide sequences of complete mt genomes showed that T. apodemi had higher identities with T. canis than other congeners. A sliding window analysis of 12 PCGs among 5 Toxocara species indicated that nad4 had the highest sequence divergence, and cox1 was the least variable gene. Relative synonymous codon usage showed that UUG, ACU, CCU, CGU, and UCU most frequently occurred in the complete genomes of T. apodemi. The Ka/Ks ratio showed that all Toxocara mt genes were subject to purification selection. The largest genetic distance between T. apodemi and the other 4 congeneric species was found in nad2, and the smallest was found in cox2. Phylogenetic analyses based on the concatenated amino acid sequences of 12 PCGs demonstrated that T. apodemi formed a distinct branch and was always a sister taxon to other congeneric species. The present study determined the complete mt genome sequences of T. apodemi, which provide novel genetic markers for further studies of the taxonomy, population genetics, and systematics of the Toxocaridae nematodes.
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Affiliation(s)
- Y Gao
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou Key Laboratory of Biomedicine and Advanced Dosage Forms, School of Life Sciences, Taizhou University, Zhejiang Taizhou318000, China
- Zhejiang-Malaysia Joint Laboratory for Bioactive Materials and Applied Microbiology, School of Life Sciences, Taizhou University, Zhejiang Taizhou318000, China
| | - Y Hu
- Taizhou City Center for Disease Control and Prevention, Zhejiang Taizhou318000, China
| | - S Xu
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou Key Laboratory of Biomedicine and Advanced Dosage Forms, School of Life Sciences, Taizhou University, Zhejiang Taizhou318000, China
- Zhejiang-Malaysia Joint Laboratory for Bioactive Materials and Applied Microbiology, School of Life Sciences, Taizhou University, Zhejiang Taizhou318000, China
| | - H Liang
- Taizhou City Center for Disease Control and Prevention, Zhejiang Taizhou318000, China
| | - H Lin
- Taizhou City Center for Disease Control and Prevention, Zhejiang Taizhou318000, China
| | - T H Yin
- Zhejiang-Malaysia Joint Laboratory for Bioactive Materials and Applied Microbiology, School of Life Sciences, Taizhou University, Zhejiang Taizhou318000, China
- Tunku Abdul Rahman University of Management and Technology, Jalan Genting Kelang, Kuala Lumpur 53300, Malaysia
| | - K Zhao
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou Key Laboratory of Biomedicine and Advanced Dosage Forms, School of Life Sciences, Taizhou University, Zhejiang Taizhou318000, China
- Zhejiang-Malaysia Joint Laboratory for Bioactive Materials and Applied Microbiology, School of Life Sciences, Taizhou University, Zhejiang Taizhou318000, China
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Ge RL, Liang Y, Xu S. [The influencing factors on the spinal sagittal alignment and global balance status of degenerative thoracolumbar kyphosis]. Zhonghua Yi Xue Za Zhi 2024; 104:1036-1042. [PMID: 38561298 DOI: 10.3760/cma.j.cn112137-20231027-00913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Objective: To explore the effect of degenerative thoracolumbar kyphosis (DTLK) on the sagittal alignment of the spine, as well as the impact on spinal parameters and imbalance secondary to thoracolumbar kyphosis. Methods: A case-control study. A total of 128 DTLK patients who aged over 50 years [thoracolumbar kyphosis (TLK)>15°] treated in Peking University People's Hospital from January 2018 to December 2021 (DTLK group) were retrospectively included in this study. Other 73 contemporaneous patients with lumbar spinal stenosis or disc herniation without thoracolumbar kyphosis (TLK=0°±15°) were enrolled into the control group. The following parameters were obtained on spine X-ray: TLK, thoracic kyphosis (TK), lumbar lordosis (LL) and sagittal vertical axis (SVA). In addition, the osteoporosis (OP) was evaluated by dual-emission X-ray absorptiometry (DXA), and the L5/S1 disc signal grading (Pfirrmann grading) was evaluated on MRI. Based on the age, the Lafage formula SVA=2× (age-55)+25 was used to distinguish balance/imbalance, and the DTLK patients were divided into balanced and an imbalanced group, the characteristics and influencing factors of the loss of sagittal balance in this population were clarified, and the interaction among various parts of the spine under a state of balance was analyzed too. Results: The TK (30.0°±13.5° vs 24.2°±7.4°) and TLK (26.6°±9.7° vs 6.0°±6.6°) in the DTLK group were both larger than those in control group while LL was smaller (34.4°±17.7° vs 44.2°±10.3°) (all P<0.001). TK was correlated to TLK (r=0.234, P=0.008) and LL (r=0.539, P<0.001) in DTLK group. LL loss was positively correlated to L5/S1 disc signal reduction (r=0.253, P=0.044). LL loss [RR=1.04(1.01-1.08)] and OP [RR=3.97(1.09, 14.50)] were influencing factors for the occurrence of imbalance in DTLK patients. The influencing factors for TK in DTLK balance group were LL (β=0.572, P<0.001) and age (β=0.351, P=0.045). The positive influencing factor for TK in imbalanced group is LL (β=0.209, P=0.015), and the impact is weaker than balanced group. Conclusions: Loss of LL and osteoporosis are more likely to cause imbalance and kyphosis in DTLK patients. In DTLK balance group, the proximal spine is regulated by lumbar spine, and the synergistic effect between the two parts maintains balance.
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Affiliation(s)
- R L Ge
- Trauma Medicine Center, Peking University People's Hospital, Beijing 100044, China
| | - Y Liang
- Spinal Surgery, Peking University People's Hospital, Beijing 100044, China
| | - S Xu
- Spinal Surgery, Peking University People's Hospital, Beijing 100044, China
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Gao Y, Cao T, Lin KZ, Guo DL, Zhang SF, Zhu XL, Zhang RT, Yan SC, Xu S, Zhao DM, Ma X. A high resolution reaction microscope with universal two-region time-focusing method. Rev Sci Instrum 2024; 95:043302. [PMID: 38578918 DOI: 10.1063/5.0202775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 03/19/2024] [Indexed: 04/07/2024]
Abstract
This paper presents a novel reaction microscope designed for ion-atom collision investigations, established at the Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China. Its time-of-flight (TOF) spectrometer employs an innovative flight-time focusing method consisting of two acceleration regions, providing optimal time focusing conditions for charged fragments with diverse initial velocities. The TOF spectrometer's axis intentionally tilts by 12° relative to the ion beam direction, preventing potential obstructions from the TOF grid electrodes. The introduced focusing method allows for a flexible time-focusing TOF spectrometer design without restricting the length ratio of the two regions. In addition, this configuration in our case significantly suppresses noise on the recoil ion detector produced by residual gas in the ion beam trajectory, which is a considerable challenge in longitudinal spectrometers. In a test experiment on the single electron capture reaction involving 62.5 keV/u He2+ ions and a helium atomic beam, the recoil longitudinal momentum resolution achieved 0.068 atomic units. This novel configuration and successful test run show excellent precision for ion-atom collision studies.
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Affiliation(s)
- Y Gao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - T Cao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - K Z Lin
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - D L Guo
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S F Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X L Zhu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - R T Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S C Yan
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S Xu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - D M Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X Ma
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
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Cui Q, Shieh M, Pan TW, Nishimura A, Matsunaga T, Kelly SS, Xu S, Jung M, Ogata S, Morita M, Yoshitake J, Chen X, Robinson JR, Qian WJ, Nishida M, Akaike T, Xian M. 2H-Thiopyran-2-thione sulfine, a compound for converting H 2S to HSOH/H 2S 2 and increasing intracellular sulfane sulfur levels. Nat Commun 2024; 15:2453. [PMID: 38503758 PMCID: PMC10951338 DOI: 10.1038/s41467-024-46652-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 02/26/2024] [Indexed: 03/21/2024] Open
Abstract
Reactive sulfane sulfur species such as persulfides (RSSH) and H2S2 are important redox regulators and closely linked to H2S signaling. However, the study of these species is still challenging due to their instability, high reactivity, and the lack of suitable donors to produce them. Herein we report a unique compound, 2H-thiopyran-2-thione sulfine (TTS), which can specifically convert H2S to HSOH, and then to H2S2 in the presence of excess H2S. Meanwhile, the reaction product 2H-thiopyran-2-thione (TT) can be oxidized to reform TTS by biological oxidants. The reaction mechanism of TTS is studied experimentally and computationally. TTS can be conjugated to proteins to achieve specific delivery, and the combination of TTS and H2S leads to highly efficient protein persulfidation. When TTS is applied in conjunction with established H2S donors, the corresponding donors of H2S2 (or its equivalents) are obtained. Cell-based studies reveal that TTS can effectively increase intracellular sulfane sulfur levels and compensate for certain aspects of sulfide:quinone oxidoreductase (SQR) deficiency. These properties make TTS a conceptually new strategy for the design of donors of reactive sulfane sulfur species.
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Affiliation(s)
- Qi Cui
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Meg Shieh
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Tony W Pan
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Akiyuki Nishimura
- Division of Cardiocirculatory Signaling, National Institute for Physiological Sciences (NIPS) and Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, 444-8787, Japan
| | - Tetsuro Matsunaga
- Department of Environmental Medicine and Molecular Toxicology, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Shane S Kelly
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Shi Xu
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Minkyung Jung
- Department of Environmental Medicine and Molecular Toxicology, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Seiryo Ogata
- Department of Environmental Medicine and Molecular Toxicology, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Masanobu Morita
- Department of Environmental Medicine and Molecular Toxicology, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Jun Yoshitake
- Department of Environmental Medicine and Molecular Toxicology, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Xiaoyan Chen
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Jerome R Robinson
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Wei-Jun Qian
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Motohiro Nishida
- Division of Cardiocirculatory Signaling, National Institute for Physiological Sciences (NIPS) and Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, 444-8787, Japan
- Department of Physiology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Takaaki Akaike
- Department of Environmental Medicine and Molecular Toxicology, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan.
| | - Ming Xian
- Department of Chemistry, Brown University, Providence, RI, 02912, USA.
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Wang G, Tang H, Xu S, Zhu H, Peng Y, Wang C. Gastrointestinal: Primary pancreatic epithelioid angiomyolipoma. J Gastroenterol Hepatol 2024; 39:416. [PMID: 37940773 DOI: 10.1111/jgh.16390] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 10/10/2023] [Indexed: 11/10/2023]
Affiliation(s)
- G Wang
- Department of Biliary and Pancreatic Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - H Tang
- Department of Biliary and Pancreatic Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - S Xu
- Department of Biliary and Pancreatic Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - H Zhu
- Department of Biliary and Pancreatic Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Y Peng
- Department of Pathology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - C Wang
- Department of Biliary and Pancreatic Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
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Li X, Zhao R, Liu J, Li Z, Chen A, Xu S, Sheng X. Dynamic changes in calcium signals during root gravitropism. Plant Physiol Biochem 2024; 208:108481. [PMID: 38447424 DOI: 10.1016/j.plaphy.2024.108481] [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: 01/11/2024] [Revised: 02/17/2024] [Accepted: 02/28/2024] [Indexed: 03/08/2024]
Abstract
Gravitropism is a vital mechanism through which plants adapt to their environment. Previous studies indicated that Ca2+ may play an important role in plant gravitropism. However, our understanding of the calcium signals in root gravitropism is still largely limited. Using a vertical stage confocal and transgenic Arabidopsis R-GECO1, our data showed that gravity stimulation enhances the occurrence of calcium spikes and increases the Ca2+ concentration in the lower side of the root cap. Furthermore, a close correlation was observed in the asymmetry of calcium signals with the inclination angles at which the roots were oriented. The frequency of calcium spikes on the lower side of 90°-rotated root decreases rapidly over time, whereas the asymmetric distribution of auxin readily strengthens for up to 3 h, indicating that the calcium spikes, promoted by gravity stimulation, may precede auxin as one of the early signals. In addition, the root gravitropism of starchless mutants is severely impaired. Correspondingly, no significant increase in calcium spike occurrence was observed in the root caps of these mutants within 15 min following a 90° rotation, indicating the involvement of starch grains in the formation of calcium spikes. However, between 30 and 45 min after a 90° rotation, asymmetric calcium spikes were indeed observed in the root of starchless mutants, suggesting that starch grains are not indispensable for the formation of calcium spikes. Besides, co-localization analysis suggests that the ER may function as calcium stores during the occurrence of calcium spikes. These findings provide further insights into plant gravitropism.
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Affiliation(s)
- Xinyu Li
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Ruoxin Zhao
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Jiahui Liu
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Ziwei Li
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Ai Chen
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Shi Xu
- College of Life Sciences, Capital Normal University, Beijing 100048, China
| | - Xianyong Sheng
- College of Life Sciences, Capital Normal University, Beijing 100048, China.
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Xu S, Li L, Shen L, Wang X, Feng W, Liu S. Unexpected partial RNA deletion by two different novel COL6A2 mutations leads to Ullrich congenital muscular dystrophy. QJM 2024; 117:61-62. [PMID: 37738610 DOI: 10.1093/qjmed/hcad209] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Indexed: 09/24/2023] Open
Affiliation(s)
- S Xu
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - L Li
- Medical Genetic Department, The Affiliated Hospital of Qingdao University, Qingdao, China
- Prenatal Diagnosis Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - L Shen
- Medical Genetic Department, The Affiliated Hospital of Qingdao University, Qingdao, China
- Prenatal Diagnosis Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - X Wang
- Medical Genetic Department, The Affiliated Hospital of Qingdao University, Qingdao, China
- Prenatal Diagnosis Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - W Feng
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - S Liu
- Medical Genetic Department, The Affiliated Hospital of Qingdao University, Qingdao, China
- Prenatal Diagnosis Center, The Affiliated Hospital of Qingdao University, Qingdao, China
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Zeng S, Mao S, Xu S, He Y, Yu J. Investigation on DOPO as reactive fumes suppressant to reduce the fumes emission of asphalt. J Hazard Mater 2024; 463:132878. [PMID: 37922580 DOI: 10.1016/j.jhazmat.2023.132878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/27/2023] [Accepted: 10/17/2023] [Indexed: 11/07/2023]
Abstract
Asphalt fumes released during pavement construction posed a threat to human health and environment. In this study, 9,10-dihydro-9-oxa-10-phosphorophenanthrene-10-oxide (DOPO) was used as a reactive fumes suppressant to reduce the asphalt fumes emission. The volatilization behavior of DOPO modified asphalt (DOPO-Asphalt) was investigated through thermogravimetric analysis, volatility test and thermal destruction gas chromatography mass spectrometry, and effect of DOPO on the chemical structure and composition of asphalt was explored through nuclear magnetic resonance hydrogen spectroscopy, Fourier transform infrared spectroscopy, and asphalt component testing. The results indicated that 1.0 wt% DOPO reduced the fume content of control asphalt by 1.1% from 120 ℃ - 200 ℃ and the H2S and VOC content by 96.9% and 84.2%, respectively, at 180 ℃. Moreover, 1.0 wt% DOPO reduced the content of aliphatic hydrocarbons, hydrocarbon derivatives, aromatics, and sulfides in control asphalt fumes by 86.8%, 89.7%, 90.7%, and 93.5%, respectively, which may be attributed to electrophilic and nucleophilic reactions between DOPO and volatile substances in asphalt. Chemical structure and composition changing of DOPO-Asphalt confirmed that P-H bond in DOPO was chemically reacted with components in asphalt, generating stable aromatic hydrocarbons and resins. The results provided a novel method for inhibiting the volatilization of harmful substances in asphalt.
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Affiliation(s)
- Shangheng Zeng
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China
| | - Sanpeng Mao
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China; Research Institute of Petro China Fuel Oil Co., Ltd., Beiwucun Road 25, Beijing 100195, PR China
| | - Shi Xu
- Hubei Key Laboratory of Roadway Bridge and Structure Engineering, Wuhan University of Technology, Wuhan 430070, PR China; Faculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, the Netherlands
| | - Yanheng He
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China
| | - Jianying Yu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China.
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Chen B, Ke C, Zou S, Liu Y, Chen D, Liu Y, Xu S. The therapeutic effect of concentrated growth factor gel on skin wounds with bone or tendon exposure. J Wound Care 2024; 33:x-xiii. [PMID: 38324424 DOI: 10.12968/jowc.2024.33.sup2a.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Treatment of soft tissue wounds with bone or tendon exposure remains a tough clinical challenge for surgeons. The current clinical approaches include various types of flap reconstruction and artificial dermis grafting as well as negative pressure wound therapy (NPWT), which are time-consuming and often result in graft failure or significant scarring. Concentrated growth factor (CGF) is a novel blood extract that contains many growth factors, platelets and fibrin to promote an orderly healing process. However, few reports have focused on wounds with bone or tendon exposure. We present a limited series and two specific cases of skin wound with bone or tendon exposed that received surgical debridement followed by CGF treatment. CGF appeared to facilitate wound closure effectively and also reduced scar formation. Our findings provide a novel therapeutic option for refractory wounds with bone or tendon exposure.
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Affiliation(s)
- Binxiong Chen
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong, China
| | - Changneng Ke
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong, China
| | - Songyun Zou
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong, China
| | - Yang Liu
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong, China
| | - Dengshan Chen
- Tangwei Community Healthcare Center, Fuyong People's Hospital of Baoan District, Shenzhen, Guangdong, China
| | - Yueming Liu
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong, China
| | - Shi Xu
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong, China
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Xie Y, Fang X, Wang A, Xu S, Li Y, Xia W. Association of cord plasma metabolites with birth weight: results from metabolomic and lipidomic studies of discovery and validation cohorts. Ultrasound Obstet Gynecol 2024. [PMID: 38243991 DOI: 10.1002/uog.27591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 11/29/2023] [Accepted: 01/15/2024] [Indexed: 01/22/2024]
Abstract
BACKGROUND Birth weight is a good predictor of fetal intrauterine growth and long-term health. Although several studies have evaluated the relationship between metabolites and birth weight, no prior study has comprehensively investigated the metabolomic and lipidomic and further validated and quantified meaningful metabolites. METHODS Firstly, a pseudotargeted metabolomics approach was applied to detect 2418 metabolites in 504 cord blood samples in the discovery set enrolled from the Wuhan Healthy Baby Cohort (HBC), China. Metabolome-wide association scan (MWAS) analysis and pathway enrichment were applied to discover metabolites and metabolic pathways that were significantly associated with birth weight for gestational age (BWGA) z-score. Logistic regression models were used to analyze the association of metabolites in the most significantly associated pathways with small for gestational age (SGA) and low birth weight (LBW). Subsequently, 350 cord blood samples in a validation cohort were subjected to targeted analysis to validate the metabolites screened from the discovery cohort. RESULTS In the discovery set, 513 metabolites were significantly associated with BWGA z-score (PFDR <0.05), of which 298 KEGG-annotated metabolites were included in the pathway analysis. The primary bile acid biosynthesis pathway was the most relevant metabolic pathway associated with BWGA z-score in our study. Elevated cord plasma primary bile acids were associated with lower BWGA z-score and higher odds of SGA or LBW in the discovery and validation cohorts. In the validation set, a 2-fold increase in taurochenodeoxycholic acid (TCDCA) and taurocholic acid (TCA) was associated with 0.10 (95% CI: 0.00, 0.20) and 0.18 (95 %CI: 0.04, 0.31) decrease in BWGA z-score, respectively, after adjusting for covariates. In addition, a 2-fold increase in cord plasma TCDCA and TCA was associated with an adjusted odds ratio of 1.52 (1.00, 2.30) and 1.77 (1.05, 2.98) for SGA, respectively. The adjusted ORs for a 2-fold increase in TCDCA and TCA concentrations were 2.39 (95% CI 1.00, 5.71) and 3.21 (0.96, 10.74) for LBW, respectively. CONCLUSIONS The results indicate a significant association between primary bile acids and lower BWGA z-score, as well as higher risk of SGA and LBW. Abnormalities of primary bile acid metabolism may play an important role in restricted fetal development. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Y Xie
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - X Fang
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - A Wang
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - S Xu
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- School of Life Sciences, Hainan University, Haikou, Hainan, China
| | - Y Li
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - W Xia
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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11
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Yan S, Zhang RT, Xu S, Zhang SF, Ma X. Molecular Ionization Dissociation Induced by Interatomic Coulombic Decay in an ArCH_{4}-Electron Collision System. Phys Rev Lett 2023; 131:253001. [PMID: 38181359 DOI: 10.1103/physrevlett.131.253001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/11/2023] [Accepted: 11/15/2023] [Indexed: 01/07/2024]
Abstract
Interatomic Coulombic decay (ICD) is a significant fragmentation mechanism observed in weakly bound systems. It has been widely accepted that ICD-induced molecular fragmentation occurs through a two-step process, involving ICD as the first step and dissociative-electron attachment (DEA) as the second step. In this study, we conducted a fragmentation experiment of ArCH_{4} by electron impact, utilizing the coincident detection of one electron and two ions. In addition to the well-known decay pathway that induces pure ionization of CH_{4}, we observed a new channel where ICD triggers the ionization dissociation of CH_{4}, resulting in the cleavage of the C-H bond and the formation of the CH_{3}^{+} and H ion pair. The high efficiency of this channel, as indicated by the relative yield of the Ar^{+}/CH_{3}^{+} ion pair, agrees with the theoretical prediction [L. S. Cederbaum, J. Phys. Chem. Lett. 11, 8964 (2020).JPCLCD1948-718510.1021/acs.jpclett.0c02259; Y. C. Chiang et al., Phys. Rev. A 100, 052701 (2019).PLRAAN2469-992610.1103/PhysRevA.100.052701]. These results suggest that ICD can directly break covalent bonds with high efficiency, bypassing the need for DEA. This finding introduces a novel approach to enhance the fragmentation efficiency of molecules containing covalent bonds, such as DNA backbone.
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Affiliation(s)
- S Yan
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China and School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - R T Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China and School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S Xu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China and School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S F Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China and School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X Ma
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China and School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
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12
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Chen B, Liu Y, Ke C, Xu S. A case of concentrated growth factor gel to fill the defect after large jaw cyst enucleation. Clin Case Rep 2023; 11:e8272. [PMID: 38046807 PMCID: PMC10689290 DOI: 10.1002/ccr3.8272] [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: 09/15/2023] [Revised: 10/18/2023] [Accepted: 11/09/2023] [Indexed: 12/05/2023] Open
Abstract
Management of large jaw cyst is challenging since high risks including pathologic fracture, limited opening, and insufficient bone healing occur after enucleation. The current case of concentrated growth factor (CGF) gel to fill defect after enucleation of large jaw cyst is rare. A 12-year-old boy with pain and swelling for 4 months in the left mandible region made a medical consultation at our hospital. Computerized tomography scan indicated that cystic lesion was found in the left mandible region. In this case, we present a patient with large jaw cyst (31 mm × 44 mm × 53 mm) who received enucleation followed by CGF gel filling the defect. The patient was discharged after 13 days without discomfort symptoms. The lesion size was reduced significantly at 1-month re-examination. No abnormality was detected in maxillofacial region at 1-year re-examination. Application of CGF gel is one of the possible options for filling defect after jaw cyst enucleation.
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Affiliation(s)
- Binxiong Chen
- Department of Burn and Plastic SurgeryShenzhen Longhua District Central HospitalShenzhenGuangdongChina
| | - Yueming Liu
- Department of Burn and Plastic SurgeryShenzhen Longhua District Central HospitalShenzhenGuangdongChina
| | - Changneng Ke
- Department of Burn and Plastic SurgeryShenzhen Longhua District Central HospitalShenzhenGuangdongChina
| | - Shi Xu
- Department of Burn and Plastic SurgeryShenzhen Longhua District Central HospitalShenzhenGuangdongChina
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13
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Tu B, Yang X, Xu S, Liang X, Liu C, Jiang J, Fan L, Tu L. Exploring the Utilization of PHC Pile Waste Concrete as Filler in Asphalt Mastics. Materials (Basel) 2023; 16:7158. [PMID: 38005086 PMCID: PMC10672930 DOI: 10.3390/ma16227158] [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: 09/18/2023] [Revised: 11/07/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023]
Abstract
Using solid waste to replace limestone filler in asphalt concrete can not only reduce the cost of road construction, but also improve the utilization rate of solid waste. In this study, PHC pile waste concrete (PPWC) was innovatively used to replace limestone filler in asphalt mixture and its effect on the physical and rheological properties of asphalt mastics was studied. Firstly, PPWC was ground into filler particles with a diameter less than 0.075 mm. The physical properties, particle characteristics and chemical composition of PPWC filler and limestone filler were compared. Asphalt mastics were prepared with different filler-asphalt volume ratios (20%, 30% and 40%) and the physical properties, high-temperature rheological properties and low-temperature cracking resistance of asphalt mastics were tested. The experimental results showed that the surface of PPWC filler is rougher and has lower density and smaller particle size than limestone filler. When the filler content is the same, PPWC filler asphalt mastics have lower penetration and ductility, higher softening point than limestone filler asphalt mastics, and the viscosity of PPWC filler asphalt mastics is more sensitive than limestone filler asphalt mastics. PPWC filler asphalt mastics demonstrated superior high-temperature stability, but poorer low-temperature cracking resistance compared to limestone filler asphalt mastics. In conclusion, PPWC fillers can be used to replace limestone fillers in asphalt mixtures. The finding of this study will provide a new solution for the construction of eco-friendly roads.
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Affiliation(s)
- Botao Tu
- Guangdong Hongye Building Materials Technology Co., Ltd., Yunfu 527121, China;
| | - Xinkui Yang
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
| | - Shi Xu
- School of Civil Engineering and Architecture, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China;
- Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands; (X.L.); (C.L.)
| | - Xuhui Liang
- Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands; (X.L.); (C.L.)
| | - Chen Liu
- Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands; (X.L.); (C.L.)
| | - Jian Jiang
- Shenzhen Sez Construction Group Co., Ltd., Shenzhen 518034, China; (J.J.); (L.F.); (L.T.)
| | - Lulu Fan
- Shenzhen Sez Construction Group Co., Ltd., Shenzhen 518034, China; (J.J.); (L.F.); (L.T.)
| | - Liangliang Tu
- Shenzhen Sez Construction Group Co., Ltd., Shenzhen 518034, China; (J.J.); (L.F.); (L.T.)
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Lee YC, Liu L, Yuan L, Risk M, Heinrich K, Witteveen-Lane M, Hayek S, Malosh R, Pop-Busui R, Jiang B, Shen C, Chesla D, Kennedy R, Xu S, Sims M, Homayouni R, Zhao L. Influenza vaccine effectiveness against hospitalized SARS-CoV-2 infection. medRxiv 2023:2023.10.27.23297682. [PMID: 37961376 PMCID: PMC10635222 DOI: 10.1101/2023.10.27.23297682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Background Some studies conducted before the Delta and Omicron variant-dominant periods have indicated that influenza vaccination provided protection against COVID-19 infection or hospitalization, but these results were limited by small study cohorts and a lack of comprehensive data on patient characteristics. No studies have examined this question during the Delta and Omicron periods (08/01/2021 to 2/22/2022). Methods We conducted a retrospective cohort study of influenza-vaccinated and unvaccinated patients in the Corewell Health East(CHE, formerly known as Beaumont Health), Corewell Health West(CHW, formerly known as Spectrum Health) and Michigan Medicine (MM) healthcare system during the Delta-dominant and Omicron-dominant periods. We used a test-negative, case-control analysis to assess the effectiveness of the influenza vaccine against hospitalized SARS-CoV-2 outcome in adults, while controlling for individual characteristics as well as pandameic severity and waning immunity of COVID-19 vaccine. Results The influenza vaccination has shown to provided some protection against SARS-CoV-2 hospitalized outcome across three main healthcare systems. CHE site (odds ratio [OR]=0.73, vaccine effectiveness [VE]=27%, 95% confidence interval [CI]: [18-35], p<0.001), CHW site (OR=0.85, VE=15%, 95% CI: [6-24], p<0.001), MM (OR=0.50, VE=50%, 95% CI: [40-58], p <0.001) and overall (OR=0.75, VE=25%, 95% CI: [20-30], p <0.001). Conclusion The influenza vaccine provides a small degree of protection against SARS-CoV-2 infection across our study sites.
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15
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Chen B, Liu Y, Liu Y, Xu S. Distribution characteristics of pathogens in different stages of pressure ulcers and the therapeutic effect of linear polarized polychromatic light combined with silver sulfadiazine cream. Medicine (Baltimore) 2023; 102:e35772. [PMID: 37861479 PMCID: PMC10589588 DOI: 10.1097/md.0000000000035772] [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: 04/11/2023] [Accepted: 10/03/2023] [Indexed: 10/21/2023] Open
Abstract
To investigate the distribution characteristics of pathogens in different stages of pressure ulcers and observe the application of linear polarized polychromatic light (LPPL) combined with silver sulfadiazine cream in treating varying stages of pressure ulcers. This study comprised 88 patients with pressure ulcers who were enrolled in the department of burn and plastic surgery of our hospital from April 2019 to April 2022. The wound exudates from patients were collected, followed by analyzing the distribution of pathogens in different stages of pressure ulcers. Patients were randomly divided into 2 groups. The first group (n = 44) received LPPL combined with silver sulfadiazine. The other group was intervened with LPPL group only for 2 weeks. The clinical efficacy, condition, and pain in the 2 groups, as well as the healing timeframes for patients were measured at different stages. The findings showed that among 88 patients with pressure ulcers, 62 were infected, and the infection rate was 70.45%. The pathogens that were observed in stage II and III to IV pressure ulcers were mainly Gram-negative bacteria. The total effective rate in the combined group was 90.91%, which was much higher than that of LPPL group (70.45%). Compared with LPPL group, the pressure ulcer scale for healing and visual analogue scale scores in the combined group were markedly lower (P < .05). It is important to note that in LPPL group, the healing time of patients in stage II and stage III to IV in the combined arm were 9.76 ± 2.38 days and 13.19 ± 2.54 days, respectively. The corresponding time in the LPPL group was prolonged to 13.20 ± 3.76 and 18.82 ± 4.17 days, respectively. The main pathogens associated with wound infection in patients with pressure ulcers are Gram-negative bacteria. The curative effects of LPPL combined with sulfadiazine silver cream on patients with pressure ulcer is obviously improved, and the recovery and pain relief are faster while the healing time of pressure ulcer is shorter.
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Affiliation(s)
- Binxiong Chen
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, Guangdong, China
| | - Yang Liu
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, Guangdong, China
| | - Yueming Liu
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, Guangdong, China
| | - Shi Xu
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, Guangdong, China
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, Shenzhen, Guangdong, China
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16
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Bal G, Xu S, Shi L, Voronenko Y, Narayanan M, Shao L, Kuduvalli G, Han B, Kovalchuk N, Surucu M. Evaluation of Treatment Interruptions and Recovery during Biology-Guided Radiotherapy Delivery. Int J Radiat Oncol Biol Phys 2023; 117:e722-e723. [PMID: 37786107 DOI: 10.1016/j.ijrobp.2023.06.2233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) A Biology-guided Radiotherapy (BgRT) based device is designed to use Positron Emission Tomography (PET) signals to achieve tracked dose delivery. The goal of this study is to investigate the dose delivery accuracy in case of interruption during BgRT treatment, and resumption in a separate treatment session for a multi-target delivery, as the PET activity continues to decay. MATERIALS/METHODS A custom-built large anthropomorphic phantom (LAP) including a 26 mm spherical target with 3D independent motion and two 22 mm spherical targets with 1D sinusoidal motion embedded in water was used. All three targets were filled with FGD in an 8:1 target to background uptake ratio (41.52 kBq/ml in target and 5.19 kBq/ml in background). During BgRT delivery, the treatment was intentionally paused during delivery to the second target and the current treatment session was ended to generate a partial fraction. Then the partial fraction was continued in a new session, where the CT scan localization and PET pre-scan were repeated using the existing PET activity present in the phantom. The newly acquired PET pre-scan, was then used to determine if sufficient PET counts were present to resume treatment delivery. The interruption and recovery algorithm is designed to calculate the fluence that needs to be delivered to the remaining targets as well as the residual fluence to be given to the targets that have already received partial dose prior to the interruption. Once the new fluence is recomputed, the treatment is resumed. The delivered doses were captured using radiochromic film (EBT-XD) inserted in the target as well as post-treatment dose calculations based on the delivered beamlet sequence to evaluate the results in terms of dosimetric coverage and margin loss. The margin loss is calculated as the maximum difference between the distance from the Clinical Target Volume (CTV) contour to the 97% isodose contour in the treatment plan and the on the film. The dosimetric coverage is defined as the percentage of voxels within the CTV that lies within 97% and 130% of the prescribed dose. RESULTS As shown in the table below, a margin loss of less than 3 mm for all targets and 100% CTV coverage was achieved. After treatment interruptions, the PET safety evaluation based on the PET pre-scan helped to determine whether the treatment could be continued on the same day using the same injected PET activity (an NTS value ≧ 2 and AC value ≧ 5 kBq/ml). CONCLUSION This study demonstrated that the BgRT system is able to deliver the prescribed dose to all targets with independent motion, even when an interruption and resumption occurs during treatment. In case such an interruption if the remaining PET activity satisfies the BgRT safety evaluation, the treatment can continue to deliver the remainder of the BgRT doses.
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Affiliation(s)
- G Bal
- RefleXion Medical, Inc., Hayward, CA
| | - S Xu
- RefleXion Medical, Inc., Hayward, CA
| | - L Shi
- RefleXion Medical, Inc., Hayward, CA
| | | | | | - L Shao
- RefleXion Medical, Inc., Hayward, CA
| | | | - B Han
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
| | - N Kovalchuk
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
| | - M Surucu
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
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17
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Bal G, Kovalchuk N, Schmall J, Voronenko Y, Bailey T, Xu S, Shi L, Groll A, Sharma S, Ramos K, Shao L, Narayanan M, Kuduvalli G, Han B, Surucu M. Intrafraction Dosimetric Evaluation of Biology-Guided Radiotherapy to a Target Under Respiratory Motion. Int J Radiat Oncol Biol Phys 2023; 117:e680-e681. [PMID: 37786004 DOI: 10.1016/j.ijrobp.2023.06.2141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) To evaluate the reproducibility and variability of biology-guided radiotherapy (BgRT) treatments using a large anthropomorphic phantom modeling the motion amplitude of a lung tumor. MATERIALS/METHODS RefleXion X1 is equipped with two opposing 90 degrees PET detector arcs to capture the radionuclide emissions and direct the 6MV Linac to treat the lesions in real time. A custom-built phantom filled with a liquid [¹⁸F]Fluorodeoxyglucose (FDG) solution was used. Fillable target and OAR structures were 3D printed and attached to motion stages. The GTV = CTV was matched to the spherical 22 mm diameter target, and the PTV was a 5 mm expansion from the CTV volume. The Biology Tracking Zone (BTZ) was generated after adding 5 mm margin to the motion extent of the CTV. The OAR was a large C-shape annulus (emulating a heart) that was approximately 3 cm from the target. The 3D independent motion trajectory of the target was designed to mimic lung motion: range of +5.8 mm to -4.9 mm in LR, range of +14.4 mm to -11.3 mm in SI, and range of +5.2 mm to -5.1 mm in AP directions. The OAR motion waveform used a 1D sinusoidal pattern with a 5 mm amplitude in SI direction. The target and the OAR were filled with 40 kBq/mL while the background had 5 kBq/mL FDG. A BgRT Modeling (imaging-only) PET acquisition was performed using RefleXion X1 and used to generate a 4-fraction BgRT treatment plan prescribing 10 Gy/fraction to PTV. For each delivery, target, OAR and background were filled with the same FDG concentrations as in the BgRT Modeling PET planning scan. Dosimetry to the target and OAR were both measured using an ion-chamber (Exradin A14SL) and film in the coronal plane through the center of the GTV for all 4 fractions. RESULTS The mean activity concentration within the (BTZ) was 7.4 ± 0.8 kBq/mL. The calculated signal-to-noise ratio metric (Normalized Target Signal) within the BTZ was 4.0 ± 0.3. Total treatment times were all less than 35 minutes (34.3 ± 0.2). Prescription dose coverage to the CTV for all 4 fractions was 100%. Ion chamber measurements in the CTV were -1.6 ± 1.3% relative to the planned dose over the active area of the ion-chamber. Minimum and maximum doses to the CTV, measured on film, were -7.7 ± 2.2% and 1.3 ± 1.4%, calculated relative to the planned dose distribution, respectively. The OAR maximum point dose measured on film was -8.7 ± 2.9%, calculated relative to the maximum OAR dose predicted on the bounded dose-volume histogram. CONCLUSION Based on this initial study, accurate and reproducible dosimetry can be achieved for targets under respiratory motion using biology-guided radiotherapy over the course of a complete course of treatment. Further studies are needed to evaluate the intrafraction dosimetry of BgRT delivery under various motion models and tumor sizes.
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Affiliation(s)
- G Bal
- RefleXion Medical, Inc., Hayward, CA
| | - N Kovalchuk
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
| | - J Schmall
- RefleXion Medical, Inc., Hayward, CA
| | | | - T Bailey
- RefleXion Medical, Inc., Hayward, CA
| | - S Xu
- RefleXion Medical, Inc., Hayward, CA
| | - L Shi
- RefleXion Medical, Inc., Hayward, CA
| | - A Groll
- RefleXion Medical, Inc., Hayward, CA
| | - S Sharma
- RefleXion Medical, Inc., Hayward, CA
| | - K Ramos
- RefleXion Medical, Inc., Hayward, CA
| | - L Shao
- RefleXion Medical, Inc., Hayward, CA
| | | | | | - B Han
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
| | - M Surucu
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
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Schmall J, Bal G, Khan S, Xu S, Voronenko Y, Shi L, Mitra A, Groll A, Sharma S, Ramos K, Shao L, Narayanan M, Olcott P, Kuduvalli G, Han B, Kovalchuk N, Surucu M. Dosimetric Accuracy of Multi-Target Biology-Guided Radiotherapy Treatments in a Single Session. Int J Radiat Oncol Biol Phys 2023; 117:e722. [PMID: 37786108 DOI: 10.1016/j.ijrobp.2023.06.2232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) We present the first dosimetric measurements of single session, multi-target BgRT deliveries using a clinically realistic motion phantom on a research-only version of the RefleXion X1 system. MATERIALS/METHODS A custom-made anthropomorphic phantom of a human torso with embedded fillable targets mimicking 18F-FDG-avid lesions was used. From the three embedded spherical targets, Target 1 was 26 mm in diameter coupled with a 3D independent respiratory motion with 22 mm range, whereas Target 2 and 3 were 22 mm in diameter and moved with a 1D 5 mm maximum sinusoidal motion. The 18F-FDG concentration in the background cavity of the phantom was 5 kBq/ml, and the targets were loaded with 10:1, 8:1 and 6:1 contrast relative to the background for Targets 1, 2, 3, respectively. Spherical structures were contoured as GTVs (CTV = GTV) and a 5 mm margin was added to create PTVs. Motion extent of the tumors were captured to create biological tracking zones for each target. Treatment plans were generated using a research version of the Reflexion treatment planning software to deliver 8 Gy/fx to the PTVs. The treatment delivery was repeated 2 times, and each time the phantom was refilled according to the plan. PET image evaluation metrics for each of the three targets were also recorded. Target dosimetry was measured using a combination of radiographic film and ion chamber. The maximum distance between the 97% prescription isodose line from the plan and the film measurements was used to characterize the dosimetric accuracy of the tracked deliveries. CTV and PTV min, max, and mean doses measured on film were also recorded for each target. RESULTS Treatment plans were successfully created with 100% prescription dose coverage to each target loaded with different FDG ratios. Total treatment times for the single-plan, three-target deliveries were less than 80 minutes. PET evaluation metrics at imaging-only and pre-scan, and planning and film dosimetry to the GTV and PTV for each of the three targets is shown in table below (mean ± standard deviation of both deliveries). The CTV dose coverage was maintained for all targets. The shrinkage distance of the 97% prescription dose isodose line on the film plane for all three targets was less than 3 mm for both tests, and ranged from -0.4 to -2.34 mm. CONCLUSION These results demonstrate that high tracking accuracy and dosimetric accuracy can be achieved in single session, multi-target deliveries over a range of target-to-background 18F-FDG concentrations and target motion patterns.
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Affiliation(s)
- J Schmall
- RefleXion Medical, Inc., Hayward, CA
| | - G Bal
- RefleXion Medical, Inc., Hayward, CA
| | - S Khan
- RefleXion Medical, Inc., Hayward, CA
| | - S Xu
- RefleXion Medical, Inc., Hayward, CA
| | | | - L Shi
- RefleXion Medical, Inc., Hayward, CA
| | - A Mitra
- RefleXion Medical, Inc., Hayward, CA
| | - A Groll
- RefleXion Medical, Inc., Hayward, CA
| | - S Sharma
- RefleXion Medical, Inc., Hayward, CA
| | - K Ramos
- RefleXion Medical, Inc., Hayward, CA
| | - L Shao
- RefleXion Medical, Inc., Hayward, CA
| | | | - P Olcott
- RefleXion Medical, Inc., Hayward, CA
| | | | - B Han
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
| | - N Kovalchuk
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
| | - M Surucu
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
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19
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Mitra A, Bal G, Xu S, Voronenko Y, Schmall J, Narayanan M, Shao L, Kuduvalli G. Treatment Plan Creation and Delivery with and without BgRT for Static and Motion Trajectories. Int J Radiat Oncol Biol Phys 2023; 117:e697-e698. [PMID: 37786043 DOI: 10.1016/j.ijrobp.2023.06.2179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) In this work we try to validate the motion tracking capabilities of BgRT for periodic and step motion trajectories. SBRT plans that matches the corresponding BgRT plans are created and delivered to the same phantom with and without motion and results are evaluated. Using BgRT based SBRT plans eliminates any user bias and creates SBRT plans that would represent treatment delivery scenarios that could have happened if the PET guided BgRT was not present for that treatment. MATERIALS/METHODS To validate SBRT plans that matches the BgRT plans, we used three different types of motion patterns (1) static, (2) lung tumor motion and (3) one-centimeter step-shift. The lung tumor motion (∼25 mm in IEC-Y, ∼7 mm in IEC-X and ∼ 10 mm in IEC-Z) was used as it represents a continuous motion of the target for the entire length of the study while the step-shift case corresponds to the patient or tumor shifting between the localization CT and the start of treatment. First, a 10 Gy per fraction BgRT plan was created for each of the three experiments based on the corresponding PET image. Then, the BgRT plans were delivered to the corresponding targets with and without motion and results are evaluated. To perform a comparative study that assess the performance of BgRT and traditional SBRT (planning and delivery methods), the exact same plan fluence of BgRT plan for each experiment was used to create the corresponding SBRT plans. The newly created SBRT plans were delivered to the corresponding phantom experiments and were compared against BgRT delivery in terms of dose coverage and target margin loss using radiochromic film that moves with the target. The margin loss was calculated as the difference between the distance from the CTV contour to the 97% isodose contour in the treatment plan and the CTV contour to the 97% isodose contour on the film. Dosimetric coverage was on the other hand calculated as the percentage of the voxels within the CTV that lies within 97% and 130% of the prescribed dose. RESULTS The results showed that the margin loss for BgRT is less than 3 mm, while for the SBRT plans were more than 3 mm when target motion is present. The dosimetric coverage for BgRT was 100% for all three cases, however less than 100% for the SBRT cases with motion. Table showing margin loss for the various experiments for a prescription dose of 10 Gy. CONCLUSION The results shows that BgRT is capable of tracking the tumor motion and delivering the prescribed dose to the moving target.
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Affiliation(s)
- A Mitra
- RefleXion Medical, Inc., Hayward, CA
| | - G Bal
- RefleXion Medical, Inc., Hayward, CA
| | - S Xu
- RefleXion Medical, Inc., Hayward, CA
| | | | - J Schmall
- RefleXion Medical, Inc., Hayward, CA
| | | | - L Shao
- RefleXion Medical, Inc., Hayward, CA
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Liu Y, Chen Z, Zhou Q, Shang X, Zhao W, Zhang G, Xu S. A Feasibility Study of Dose Band Prediction in Radiotherapy: Predicting a Dose Spectrum. Int J Radiat Oncol Biol Phys 2023; 117:e691. [PMID: 37786031 DOI: 10.1016/j.ijrobp.2023.06.2164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Current deep learning-based dose prediction methods can only predict a specific dose distribution. If the predicted dose is inaccurate, no more options can be selected. We proposed a novel dose prediction method named dose band prediction, which outcomes a spectrum of predicted dose distribution for planning and quality assurance (QA). MATERIALS/METHODS Upper-Band and Lower-Band losses were involved in 3D convolution neural networks to establish the Upper-Band Network (UBN) and Lower-Band Network (LBN). Each voxel's ideal dose spectrum (dose band) was defined by the maximum/minimum rational dose predicted by UBN/LBN. 130 NPC cases with Tomotherapy (dataset 1), 49 cervix cases with IMRT (dataset 2) and 43 cervix cases with VMAT (dataset 3) were enrolled to establish and evaluate our dose band prediction method. RESULTS The dose band prediction method can successfully predict a spectrum of doses. Upper-Band/Lower-Band presents maximum/minimum rational dose; Middle-Line presents the average of Upper-Band and Lower-Band. The clinical implement dose was used as the reference dose. We evaluated the maximum interval between the reference and Upper-Band/Middle-Line/Lower-Band doses, and the percentage dose difference was used as the evaluation method. The differences in PTV for Upper-Band, Middle-Line and Lower-Band in dataset 1 were within 2.47%, 0.54%, and 2.8%; in dataset 2, they were within 0.37%, 1.15%, and 2.69%; in dataset 3, they were within 0.96%, 0.35%, and 1.66%. The mean difference of OARs for the Upper-Band, Middle-Line and Lower-Band in dataset 1 were within 8.13%, 4.97%, and 8.19%; in dataset 2, they were within 8.8%, 4.48%, and 5.52%; in dataset 3, they were within 4.01%, 3.13%, and 5.79% (shown in Table 1). CONCLUSION Dose Band prediction achieved high-accuracy dose prediction by the Middle-Line. More importantly, the Upper-Band/Lower-Band provided a spectrum of possible rational doses. Our Dose Band prediction method is based on a specific loss function, so it can easily be applied in various network and patient cases. Dose Band prediction towards a more robust plan QA and planning assistance. Table 1. The maximum interval of doses (percentage dose difference, %).
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Affiliation(s)
- Y Liu
- School of physics, Beijing University, Beijing, China; Department of Radiation Oncology, PLA General Hospital, Beijing, China
| | - Z Chen
- Manteia Technologies Co., Ltd, Xiamen, China
| | - Q Zhou
- Manteia Technologies Co., Ltd, Xiamen, China
| | - X Shang
- School of physics, Beijing University, Beijing, China; Department of Radiation Oncology, PLA General Hospital, Beijing, China
| | - W Zhao
- School of physics, Beijing University, Beijing, China
| | - G Zhang
- School of physics, Beijing University, Beijing, China
| | - S Xu
- National Cancer Center/National Clinical Research Center for Cancer/Hebei Cancer Hospital, Chinese Academy of Medical Sciences, Hebei, China; National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Han B, Schmall J, Bal G, Khan S, Voronenko Y, Xu S, Shi L, Mitra A, Groll A, Sharma S, Ramos K, Shao L, Narayanan M, Olcott P, Kuduvalli G, Kovalchuk N, Surucu M. Characterization of Biology-Guided Radiotherapy Accuracy as a Function of PET Tracer Uptake. Int J Radiat Oncol Biol Phys 2023; 117:e668-e669. [PMID: 37785972 DOI: 10.1016/j.ijrobp.2023.06.2113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) To characterize the tracking capability and dosimetric accuracy of biology-guided radiotherapy (BgRT) under clinically relevant PET tracer uptake scenarios relative to the background. MATERIALS/METHODS A custom-made anthropomorphic phantom filled with a liquid 18F-FDG solution including two embedded fillable 22 mm diameter spherical structures mimicking GTV (= CTV) and OAR was coupled to motion stages to create an independent 3D respiratory motion with 22 mm maximum range for target and a 5 mm 1D sinusoidal motion in the OAR. The biology-tracking zone (BTZ) was generated by adding 5 mm margin to the motion extent. The three BgRT scenarios studied were representative of tumors with good (8:1), borderline (4:1) and undesired (2:1) PET biodistributions compared to background. The clinical safety limit of BgRT uses Activity Concentration within the BTZ (AC ≥ 5 kBq/ml) and Normalized Target Signal as a contrast metric (NTS ≧ 2.7 for planning and ≧ 2 for delivery). The BgRT deliveries were repeated 3 times with radiochromic film and integrated ion chamber capturing the target and OAR doses. Tracked dosimetry was assessed using a margin-loss calculation defined as the maximum linear difference in distance between the planned and delivered 97% prescription iso-dose lines. RESULTS The imaging-only PET images used to create BgRT plans had an AC of 7.0, 5.3, and 1.6 kBq/ml with an NTS of 6.8, 5.3, and 1.8 for 8:1, 4:1, and 2:1 concentrations, respectively. Qualitatively, the target was not visible on the planning PET images 2:1 loading scenario. At delivery, the mean pre-scan activity concentrations were 6.8, 4.7, and 3.7 kBq/ml with corresponding mean NTS of 3.7, 2.6, 1.5 for 8:1, 4:1 and 2:1 deliveries. The pre-scan values of AC or NTS did not satisfy the clinical system safety limits for 4:1 and 2:1 ratio experiments, but the engineering software allowed for the delivery to capture the resulting doses. The deliveries showed a prescription dose coverage to the CTV of 100% for the 8:1 and 4:1 cases, but 88% for the 2:1 case. When compared to the planned dose values, the delivered minimum doses were -7.6%, -8.6% and -10.9%, whereas the maximum dose differences in CTV were 1.2%, 0% and -4.8% of the planned dose distributions of the 8:1, 4:1 and 2:1 cases, respectively. Calculated margin losses were -2.3, -3.8, and -5.5 mm, for the 8:1, 4:1, and 2:1 cases, respectively. The maximum OAR doses were less than the maximum doses predicted on the bounded DVH curves for all scenarios. CONCLUSION With sufficient tracer uptake in the target, BgRT can deliver tracked dosimetry for targets with a large respiratory motion profile. Both the good BgRT candidate and borderline cases produced clinically acceptable delivered doses, even though the borderline case was flagged by the clinical system safety checks. As expected, the delivered BgRT dose distributions were suboptimal with reduced tumor over background PET contrast.
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Affiliation(s)
- B Han
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
| | - J Schmall
- RefleXion Medical, Inc., Hayward, CA
| | - G Bal
- RefleXion Medical, Inc., Hayward, CA
| | - S Khan
- RefleXion Medical, Inc., Hayward, CA
| | | | - S Xu
- RefleXion Medical, Inc., Hayward, CA
| | - L Shi
- RefleXion Medical, Inc., Hayward, CA
| | - A Mitra
- RefleXion Medical, Inc., Hayward, CA
| | - A Groll
- RefleXion Medical, Inc., Hayward, CA
| | - S Sharma
- RefleXion Medical, Inc., Hayward, CA
| | - K Ramos
- RefleXion Medical, Inc., Hayward, CA
| | - L Shao
- RefleXion Medical, Inc., Hayward, CA
| | | | - P Olcott
- RefleXion Medical, Inc., Hayward, CA
| | | | - N Kovalchuk
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
| | - M Surucu
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
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Sun Y, Yu XF, Yao H, Xu S, Ma YQ, Chai C. Safety and feasibility of modified duct-to-mucosa pancreaticojejunostomy during pancreatoduodenectomy: A retrospective cohort study. World J Gastrointest Surg 2023; 15:1901-1909. [PMID: 37901736 PMCID: PMC10600778 DOI: 10.4240/wjgs.v15.i9.1901] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 07/20/2023] [Accepted: 08/04/2023] [Indexed: 09/21/2023] Open
Abstract
BACKGROUND Pancreatoduodenectomy (PD) is the most effective surgical procedure to remove a pancreatic tumor, but the prevalent postoperative complications, including postoperative pancreatic fistula (POPF), can be life-threatening. Thus far, there is no consensus about the prevention of POPF. AIM To determine possible prognostic factors and investigate the clinical effects of modified duct-to-mucosa pancreaticojejunostomy (PJ) on POPF development. METHODS We retrospectively collected and analyzed the data of 215 patients who underwent PD between January 2017 and February 2022 in our surgery center. The risk factors for POPF were analyzed by univariate analysis and multivariate logistic regression analysis. Then, we stratified patients by anastomotic technique (end-to-side invagination PJ vs modified duct-to-mucosa PJ) to conduct a comparative study. RESULTS A total of 108 patients received traditional end-to-side invagination PJ, and 107 received modified duct-to-mucosa PJ. Overall, 58.6% of patients had various complications, and 0.9% of patients died after PD. Univariate and multivariate logistic regression analyses showed that anastomotic approaches, main pancreatic duct (MPD) diameter and pancreatic texture were significantly associated with the incidence of POPF. Additionally, the POPF incidence and operation time in patients receiving modified duct-to-mucosa PJ were 11.2% and 283.4 min, respectively, which were significantly lower than those in patients receiving traditional end-to-side invagination PJ (27.8% and 333.2 minutes). CONCLUSION Anastomotic approach, MPD diameter and pancreatic texture are major risk factors for POPF development. Compared with traditional end-to-side invagination PJ, modified duct-to-mucosa PJ is a simpler and more efficient technique that results in a lower incidence of POPF. Further studies are needed to validate our findings and explore the clinical applicability of our technique for laparoscopic and robotic PD.
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Affiliation(s)
- Yi Sun
- Department of General Surgery, The People’s Hospital of Suzhou New District, Suzhou 215000, Jiangsu Province, China
| | - Xiao-Feng Yu
- Department of General Surgery, The People’s Hospital of Suzhou New District, Suzhou 215000, Jiangsu Province, China
| | - Han Yao
- Department of General Surgery, The People’s Hospital of Suzhou New District, Suzhou 215000, Jiangsu Province, China
| | - Shi Xu
- Department of General Surgery, The People’s Hospital of Suzhou New District, Suzhou 215000, Jiangsu Province, China
| | - Yu-Qiao Ma
- Department of General Surgery, The People’s Hospital of Suzhou New District, Suzhou 215000, Jiangsu Province, China
| | - Chen Chai
- Department of General Surgery, The People’s Hospital of Suzhou New District, Suzhou 215000, Jiangsu Province, China
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Luo Z, Wang J, Zhou Y, Mao Q, Lang B, Xu S. Workplace bullying and suicidal ideation and behaviour: a systematic review and meta-analysis. Public Health 2023; 222:166-174. [PMID: 37544128 DOI: 10.1016/j.puhe.2023.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 06/11/2023] [Accepted: 07/06/2023] [Indexed: 08/08/2023]
Abstract
OBJECTIVES Suicidal ideation and behaviour are potential outcomes of workplace bullying. This review aimed to determine the extent of the association between workplace bullying and suicidal ideation and behaviour. STUDY DESIGN The study incorporated a systematic review and meta-analysis. METHODS The Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement was followed to conduct a comprehensive systematic review and meta-analysis. A combination of subject terms and free words was used to search nine electronic databases. Two reviewers independently screened articles and extracted information according to the inclusion criteria. A meta-analysis was performed with averaged weighted correlations across samples using the STATA software (version 16.0) from pooled estimates of the main results from all studies. RESULTS In total, 25 articles of high or medium quality were included in the systematic review; 15 of these were included in the meta-analysis. The prevalence of suicidal ideation and behaviour was 18% and 4%, respectively. Individuals who experienced workplace bullying had 2.03-times and 2.67-times higher odds of reporting suicidal ideation and behaviour, respectively, after adjustment for confounding factors. Moderating and mediating factors may help reduce the risk of suicidal ideation and behaviour for individuals experiencing workplace bullying. CONCLUSION This study indicated that exposure to workplace bullying significantly increased the risk of suicidal ideation and behaviour.
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Affiliation(s)
- Z Luo
- Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region (West China Hospital Sichuan University Tibet Chengdu Branch Hospital), No. 20 Ximianqiao Hengjie, Chengdu 610041, China.
| | - J Wang
- College of Nursing, Chengdu University of Traditional Chinese Medicine, Chengdu 610041, China
| | - Y Zhou
- College of Nursing, Chengdu University of Traditional Chinese Medicine, Chengdu 610041, China
| | - Q Mao
- Hospital of Chengdu University of Traditional Chinese Medicine, No. 39, Shierqiao Road, Jinniu District, Chengdu 6100752, China
| | - B Lang
- Hospital of Chengdu University of Traditional Chinese Medicine, No. 39, Shierqiao Road, Jinniu District, Chengdu 6100752, China
| | - S Xu
- Hospital of Chengdu University of Traditional Chinese Medicine, No. 39, Shierqiao Road, Jinniu District, Chengdu 6100752, China
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Xu S, Shieh M, Paul BD, Xian M. Hydrogen sulfide: Recent development of its dual donors and hybrid drugs. Br J Pharmacol 2023:10.1111/bph.16211. [PMID: 37553774 PMCID: PMC10850433 DOI: 10.1111/bph.16211] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 07/27/2023] [Accepted: 08/01/2023] [Indexed: 08/10/2023] Open
Abstract
Hydrogen sulfide (H2 S) is an important gaseous signalling molecule known to be critically involved in regulating cellular redox homeostasis. As the beneficial and therapeutic effects of H2 S in pathophysiology, such as in cardiovascular and neurodegenerative diseases, have emerged, so too has the drive for the development of H2 S-releasing compounds (aka donors) and their therapeutic applications. Most reported donor compounds singularly release H2 S through biocompatible triggers. An emerging area in the field is the development of compounds that can co-deliver H2 S with other drugs or biologically relevant species, such as reactive oxygen and nitrogen species (ROS and RNS, respectively). These H2 S-based dual donors and hybrid drugs are expected to offset negative side effects from individual treatments or achieve synergistic effects rendering them more clinically effective. Additionally, considering that molecules exist and interact physiologically, dual donors may more accurately mimic biological systems as compared to single donors and allow for the elucidation of fundamental chemistry and biology. This review focuses on the recent advances in the development of H2 S-based dual donors and hybrid drugs along with their design principles and synergistic effects.
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Affiliation(s)
- Shi Xu
- Department of Chemistry, Brown University, Providence, Rhode Island, USA
| | - Meg Shieh
- Department of Chemistry, Brown University, Providence, Rhode Island, USA
| | - Bindu D Paul
- Department of Pharmacology and Molecular Sciences, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Lieber Institute for Brain Development, Baltimore, Maryland, USA
| | - Ming Xian
- Department of Chemistry, Brown University, Providence, Rhode Island, USA
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Bai J, Jiao F, Salmeron AG, Xu S, Xian M, Huang L, Chen DB. Mapping Pregnancy-dependent Sulfhydrome Unfolds Diverse Functions of Protein Sulfhydration in Human Uterine Artery. Endocrinology 2023; 164:bqad107. [PMID: 37439247 PMCID: PMC10413431 DOI: 10.1210/endocr/bqad107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 06/26/2023] [Accepted: 07/11/2023] [Indexed: 07/14/2023]
Abstract
Uterine artery (UA) hydrogen sulfide (H2S) production is augmented in pregnancy and, on stimulation by systemic/local vasodilators, contributes to pregnancy-dependent uterine vasodilation; however, how H2S exploits this role is largely unknown. S-sulfhydration converts free thiols to persulfides at reactive cysteine(s) on targeted proteins to affect the entire proteome posttranslationally, representing the main route for H2S to elicit its function. Here, we used Tag-Switch to quantify changes in sulfhydrated (SSH-) proteins (ie, sulfhydrome) in H2S-treated nonpregnant and pregnant human UA. We further used the low-pH quantitative thiol reactivity profiling platform by which paired sulfhydromes were subjected to liquid chromatography tandem mass spectrometry-based peptide sequencing to generate site (cysteine)-specific pregnancy-dependent H2S-responsive human UA sulfhydrome. Total levels of sulfhydrated proteins were significantly greater in pregnant vs nonpregnant human UA and further stimulated by treatment with sodium hydrosulfide. We identified a total of 360 and 1671 SSH-peptides from 480 and 1186 SSH-proteins in untreated and sodium hydrosulfide-treated human UA, respectively. Bioinformatics analyses identified pregnancy-dependent H2S-responsive human UA SSH peptides/proteins, which were categorized to various molecular functions, pathways, and biological processes, especially vascular smooth muscle contraction/relaxation. Pregnancy-dependent changes in these proteins were rectified by immunoblotting of the Tag-Switch labeled SSH proteins. Low-pH quantitative thiol reactivity profiling failed to identify low abundance SSH proteins such as KATP channels in human UA; however, immunoblotting of Tag-Switch-labeled SSH proteins identified pregnancy-dependent upregulation of SSH-KATP channels without altering their total proteins. Thus, comprehensive analyses of human UA sulfhydromes influenced by endogenous and exogenous H2S inform novel roles of protein sulfhydration in uterine hemodynamics regulation.
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Affiliation(s)
- Jin Bai
- Department of Obstetrics and Gynecology, University of California, Irvine, CA 92697, USA
| | - Fenglong Jiao
- Department of Physiology and Biophysics, University of California, Irvine, CA 92697, USA
| | | | - Shi Xu
- Department of Chemistry, Brown University, Providence, RI 02912, USA
| | - Ming Xian
- Department of Chemistry, Brown University, Providence, RI 02912, USA
| | - Lan Huang
- Department of Physiology and Biophysics, University of California, Irvine, CA 92697, USA
| | - Dong-bao Chen
- Department of Obstetrics and Gynecology, University of California, Irvine, CA 92697, USA
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Liu Y, Xu S, Cai Q, Chen Y, Zhu P, Du M, Visser A, Li A. Does Periodontitis Affect the Association of Biological Aging with Mortality? J Dent Res 2023:220345231179117. [PMID: 37358230 DOI: 10.1177/00220345231179117] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2023] Open
Abstract
The prevalence of periodontitis is increasing with the aging of the global population. Periodontitis has been suggested to accelerate aging and increase mortality. The present nationwide prospective cohort study aimed to determine whether periodontitis could modify the association of biological aging with all-cause and cause-specific mortality in middle-aged and older adults. Participants ≥40 y of age from the Third National Health and Nutrition Examination Survey (NHANES III) were included (n = 6,272). Phenotypic age acceleration (PhenoAgeAccel) was used to evaluate the biological aging process. Moderate/severe periodontitis was defined using a half-reduced Centers for Disease Control and Prevention and American Academy of Periodontology case definition. Multivariable Cox proportional hazard regression was conducted to estimate the association between PhenoAgeAccel and mortality risk, followed by effect modification analysis to test whether periodontitis modified the association. During a median follow-up of 24.5 y, 3,600 (57.4%) deaths occurred. The positive relationships between PhenoAgeAccel and all-cause and cause-specific mortality were nonlinear. After adjusting for potential confounders, the highest quartile of PhenoAgeAccel was associated with increased all-cause mortality in individuals with no/mild periodontitis (hazard ratio for Q4 vs. Q1 [HRQ4vs.Q1] = 1.789; 95% confidence interval [CI], 1.541-2.076). In contrast, the association was enhanced in patients with moderate/severe periodontitis (HRQ4vs.Q1 = 2.446 [2.100-2.850]). Periodontal status significantly modified the association between PhenoAgeAccel and all-cause mortality (P for interaction = 0.012). In subgroup analyses, the modifying effect of periodontitis was observed in middle-aged adults (40-59 y), females, and non-Hispanic Whites. Although cause-specific mortality showed a similar trend, the PhenoAgeAccel × periodontitis interaction did not reach statistical significance. In conclusion, periodontitis might enhance the association of biological aging with all-cause mortality in middle-aged and older adults. Hence, maintaining and enhancing periodontal health is expected to become an intervention to slow aging and extend life span.
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Affiliation(s)
- Y Liu
- Department of Oral Medicine, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - S Xu
- Center of Oral Implantology, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Q Cai
- Division of Nephrology, National Clinical Research Center for Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Y Chen
- Department of Epidemiology and Public Health, University College London, London, UK
| | - P Zhu
- Center of Oral Implantology, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - M Du
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration, Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - A Visser
- Center for Dentistry and Oral Hygiene, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Department for Gerodontology, College of Dental Sciences, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - A Li
- Department of Periodontology, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
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Dong T, Xu S, Chen ZY, Liang YJ, Meng XQ, Niu CG, Yuan KY, Li PL, Duan SZ, Huang ZW. Prevotella intermedia Aggravates Subclinical Hypothyroidism. J Dent Res 2023:220345231168052. [PMID: 37204148 DOI: 10.1177/00220345231168052] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023] Open
Abstract
Subclinical hypothyroidism (SCH) has been shown to be associated with microbiota. However, the association between SCH and oral microbiota has not yet been elucidated. The results of our previous clinical studies showed that Prevotella intermedia was abundant in the oral microbiota of SCH patients. This study aimed to investigate the relationship between SCH and oral microbiota, verify the pathogenicity of P. intermedia in SCH, and preliminarily explore the possible mechanism. The SCH mouse model with oral application of P. intermedia was established, and the variance in the mouse oral microbiota and changes in thyroid function and metabolism were detected in mice. Student's t test and analysis of variance were used for statistical analysis. Oral application of P. intermedia changed the composition of the oral microbiota of SCH mice, which enhanced the damage to the thyroid and decreased the expression of functional genes of the thyroid. Moreover, P. intermedia decreased oxygen consumption and aggravated glucose and lipid metabolism disorders in SCH mice. Glucose tolerance and insulin tolerance decreased, and the triglyceride content of the liver and inflammatory infiltration in adipose tissue increased in SCH mice after P. intermedia stimulation. Mechanistically, P. intermedia increased the proportion of CD4+ T cells in cervical lymph nodes and thyroids in SCH mice. Th1 cells were suggested to play an important role in the pathogenesis of SCH involving P. intermedia. In conclusion, P. intermedia aggravated SCH manifestations, including thyroid dysfunction and glucose and lipid metabolism disorders, by causing immune imbalance in mice. This study sheds new light on the pathogenesis of SCH from the perspective of oral microbiota.
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Affiliation(s)
- T Dong
- Department of Endodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
- Laboratory of Oral Microbiota and Systemic Diseases, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
| | - S Xu
- Laboratory of Oral Microbiota and Systemic Diseases, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
| | - Z-Y Chen
- Department of Endodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
- Laboratory of Oral Microbiota and Systemic Diseases, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
| | - Y-J Liang
- Laboratory of Oral Microbiota and Systemic Diseases, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
- Department of Nursing, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; School of Nursing, Shanghai Jiao Tong University, Shanghai, China
| | - X-Q Meng
- Laboratory of Oral Microbiota and Systemic Diseases, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
| | - C-G Niu
- Department of Endodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
- Laboratory of Oral Microbiota and Systemic Diseases, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
| | - K-Y Yuan
- Department of Endodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
- Laboratory of Oral Microbiota and Systemic Diseases, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
| | - P-L Li
- Department of Orthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
| | - S-Z Duan
- Laboratory of Oral Microbiota and Systemic Diseases, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
| | - Z-W Huang
- Department of Endodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
- Laboratory of Oral Microbiota and Systemic Diseases, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology, Shanghai, China
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Chen J, Zhu Z, Xu S, Li J, Huang L, Tan W, Zhang Y, Zhao Y. HDAC1 participates in polycystic ovary syndrome through histone modification to regulate H19/miR-29a-3p/NLRP3-mediated granulosa cell pyroptosis. Mol Cell Endocrinol 2023; 573:111950. [PMID: 37207962 DOI: 10.1016/j.mce.2023.111950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 05/06/2023] [Accepted: 05/09/2023] [Indexed: 05/21/2023]
Abstract
Histone deacetylase 1 (HDAC1) is known to participate in the molecular etiology of polycystic ovary syndrome (PCOS). However, its role in granulosa cell (GC) pyroptosis remains unclear. This study sought to investigate the mechanism of HDAC1 in PCOS-induced GC pyroptosis through histone modification. Clinical serum samples and the general data of study subjects were collected. PCOS mouse models were established using dehydroepiandrosterone and cell models were established in HGL5 cells using dihydrotestosterone. Expressions of HDAC1, H19, miR-29a-3p, and NLR family pyrin domain containing 3 (NLRP3) and pyroptosis-related proteins and levels of hormones and inflammatory cytokines were determined. Ovarian damage was observed by hematoxylin-eosin staining. Functional rescue experiments were conducted to verify the role of H19/miR-29a-3p/NLRP3 in GC pyroptosis in PCOS. HDAC1 and miR-29a-3p were downregulated whereas H19 and NLRP3 were upregulated in PCOS. HDAC1 upregulation attenuated ovarian damage and hormone disorders in PCOS mice and suppressed pyroptosis in ovarian tissues and HGL5 cells. HDAC1 inhibited H3K9ac on the H19 promoter and H19 competitively bound to miR-29a-3p to improve NLRP3 expression. Overexpressed H19 or NLRP3 or inhibited miR-29a-3p reversed the inhibition of GC pyroptosis by HDAC1 upregulation. Overall, HDAC1 suppressed GC pyroptosis in PCOS through deacetylation to regulate the H19/miR-29a-3p/NLRP3 axis.
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Affiliation(s)
- Jiying Chen
- Department of Obstetrics and Gynecology, Shenzhen Longhua District Central Hospital, Guangdong Medical University Affiliated Longhua District Central Hospital, Shenzhen, 518110, China.
| | - Zhiying Zhu
- Department of Obstetrics and Gynecology, Shenzhen Longhua District Central Hospital, Guangdong Medical University Affiliated Longhua District Central Hospital, Shenzhen, 518110, China
| | - Shi Xu
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Guangdong Medical University Affiliated Longhua District Central Hospital, Shenzhen, 518110, China
| | - Jing Li
- Department of Obstetrics and Gynecology, Shenzhen Longhua District Central Hospital, Guangdong Medical University Affiliated Longhua District Central Hospital, Shenzhen, 518110, China
| | - Lilan Huang
- Department of General Practice, Shenzhen Longhua District Central Hospital, Guangdong Medical University Affiliated Longhua District Central Hospital, Shenzhen, 518110, China
| | - Wenqing Tan
- Department of General Practice, Shenzhen Longhua District Central Hospital, Guangdong Medical University Affiliated Longhua District Central Hospital, Shenzhen, 518110, China
| | - Yonggang Zhang
- Department of Clinical Laboratory, Shenzhen Longhua District Central Hospital, Guangdong Medical University Affiliated Longhua District Central Hospital, Shenzhen, 518110, China
| | - Yanli Zhao
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Guangdong Medical University Affiliated Longhua District Central Hospital, Shenzhen, 518110, China
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Zhou BW, Zhang J, Ye XB, Liu GX, Xu X, Wang J, Liu ZH, Zhou L, Liao ZY, Yao HB, Xu S, Shi JJ, Shen X, Yu XH, Hu ZW, Lin HJ, Chen CT, Qiu XG, Dong C, Zhang JX, Yu RC, Yu P, Jin KJ, Meng QB, Long YW. Octahedral Distortion and Displacement-Type Ferroelectricity with Switchable Photovoltaic Effect in a 3d^{3}-Electron Perovskite System. Phys Rev Lett 2023; 130:146101. [PMID: 37084444 DOI: 10.1103/physrevlett.130.146101] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 12/02/2022] [Accepted: 03/14/2023] [Indexed: 05/03/2023]
Abstract
Because of the half-filled t_{2g}-electron configuration, the BO_{6} octahedral distortion in a 3d^{3} perovskite system is usually very limited. In this Letter, a perovskitelike oxide Hg_{0.75}Pb_{0.25}MnO_{3} (HPMO) with a 3d^{3} Mn^{4+} state was synthesized by using high pressure and high temperature methods. This compound exhibits an unusually large octahedral distortion enhanced by approximately 2 orders of magnitude compared with that observed in other 3d^{3} perovskite systems like RCr^{3+}O_{3} (R=rare earth). Essentially different from centrosymmetric HgMnO_{3} and PbMnO_{3}, the A-site doped HPMO presents a polar crystal structure with the space group Ama2 and a substantial spontaneous electric polarization (26.5 μC/cm^{2} in theory) arising from the off-center displacements of A- and B-site ions. More interestingly, a prominent net photocurrent and switchable photovoltaic effect with a sustainable photoresponse were observed in the current polycrystalline HPMO. This Letter provides an exceptional d^{3} material system which shows unusually large octahedral distortion and displacement-type ferroelectricity violating the "d^{0}-ness" rule.
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Affiliation(s)
- B W Zhou
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - J Zhang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X B Ye
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - G X Liu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X Xu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - J Wang
- Department of Physics, Beijing Normal University, Beijing 100875, China
| | - Z H Liu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - L Zhou
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Z Y Liao
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - H B Yao
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S Xu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - J J Shi
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X Shen
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - X H Yu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z W Hu
- Max Planck Institute for Chemical Physics of Solids, Dresden 01187, Germany
| | - H J Lin
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - C T Chen
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - X G Qiu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - C Dong
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - J X Zhang
- Department of Physics, Beijing Normal University, Beijing 100875, China
| | - R C Yu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - P Yu
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, 100084, China
| | - K J Jin
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Q B Meng
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Y W Long
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
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Zhou N, Li X, Wang J, Yu H, Su C, Zu L, Huang D, Xu S. 224P Genetic landscape, PD-L1 expression, and CD8+ infiltration in Chinese pulmonary carcinoids. J Thorac Oncol 2023. [DOI: 10.1016/s1556-0864(23)00477-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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Lingqi Y, Xu S. 60P Comparison of metastasis patterns and prognosis of advanced old NSCLC patients by age groups: A SEER database analysis. J Thorac Oncol 2023. [DOI: 10.1016/s1556-0864(23)00314-3] [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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Ju Y, Liu K, Ma G, Zhu B, Wang H, Hu Z, Zhao J, Zhang L, Cui K, He XR, Huang M, Li Y, Xu S, Gao Y, Liu K, Liu H, Zhuo Z, Zhang G, Guo Z, Ye Y, Zhang L, Zhou X, Ma S, Qiu Y, Zhang M, Tao Y, Zhang M, Xian L, Xie W, Wang G, Wang Y, Wang C, Wang DH, Yu K. Bacterial antibiotic resistance among cancer inpatients in China: 2016-20. QJM 2023; 116:213-220. [PMID: 36269193 DOI: 10.1093/qjmed/hcac244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 09/16/2022] [Accepted: 10/10/2022] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The incidence of infections among cancer patients is as high as 23.2-33.2% in China. However, the lack of information and data on the number of antibiotics used by cancer patients is an obstacle to implementing antibiotic management plans. AIM This study aimed to investigate bacterial infections and antibiotic resistance in Chinese cancer patients to provide a reference for the rational use of antibiotics. DESIGN This was a 5-year retrospective study on the antibiotic resistance of cancer patients. METHODS In this 5-year surveillance study, we collected bacterial and antibiotic resistance data from 20 provincial cancer diagnosis and treatment centers and three specialized cancer hospitals in China. We analyzed the resistance of common bacteria to antibiotics, compared to common clinical drug-resistant bacteria, evaluated the evolution of critical drug-resistant bacteria and conducted data analysis. FINDINGS Between 2016 and 2020, 216 219 bacterial strains were clinically isolated. The resistance trend of Escherichia coli and Klebsiella pneumoniae to amikacin, ciprofloxacin, cefotaxime, piperacillin/tazobactam and imipenem was relatively stable and did not significantly increase over time. The resistance of Pseudomonas aeruginosa strains to all antibiotics tested, including imipenem and meropenem, decreased over time. In contrast, the resistance of Acinetobacter baumannii strains to carbapenems increased from 4.7% to 14.7%. Methicillin-resistant Staphylococcus aureus (MRSA) significantly decreased from 65.2% in 2016 to 48.9% in 2020. CONCLUSIONS The bacterial prevalence and antibiotic resistance rates of E. coli, K. pneumoniae, P. aeruginosa, A. baumannii, S. aureus and MRSA were significantly lower than the national average.
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Affiliation(s)
- Y Ju
- From the Department of Critical Care Medicine, Harbin Medical University Cancer Hospital, Harbin, China
| | - K Liu
- Department of Critical Care Medicine, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - G Ma
- Department of Critical Care Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - B Zhu
- Department of Critical Care Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
| | - H Wang
- Department of Critical Care Medicine, Peking University Cancer Hospital & Institute, Beijing, China
| | - Z Hu
- Department of Critical Care Medicine, Hebei Tumor Hospital, Shijiazhuang, China
| | - J Zhao
- Department of Critical Care Medicine, Hunan Cancer Hospital, Changsha, China
| | - L Zhang
- Department of Critical Care Medicine, Hubei Cancer Hospital, Wuhan, China
| | - K Cui
- Department of Critical Care Medicine, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - X-R He
- Department of Critical Care Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - M Huang
- Department of Critical Care Medicine, Shanxi Tumor Hospital, Taiyuan, China
| | - Y Li
- Department of Critical Care Medicine, Guangxi Medical University Cancer Hospital, Nanning, China
| | - S Xu
- Department of Critical Care Medicine, Sichuan Cancer Hospital, Chengdu, China
| | - Y Gao
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - K Liu
- Department of Critical Care Medicine, Zhejiang Cancer Hospital, Hangzhou, China
| | - H Liu
- From the Department of Critical Care Medicine, Harbin Medical University Cancer Hospital, Harbin, China
| | - Z Zhuo
- From the Department of Critical Care Medicine, Harbin Medical University Cancer Hospital, Harbin, China
| | - G Zhang
- Department of Critical Care Medicine, Jilin Tumor Hospital, Changchun, China
| | - Z Guo
- Department of Critical Care Medicine, Shandong Cancer Hospital and Institute, Shandong, China
| | - Y Ye
- Department of Critical Care Medicine, Fujian Cancer Hospital, Fuzhou, China
| | - L Zhang
- Department of Critical Care Medicine, Anhui Provincial Cancer Hospital, Hefei, China
| | - X Zhou
- Department of Critical Care Medicine, Gansu Provincial Cancer Hospital, Lanzhou, China
| | - S Ma
- Department of Critical Care Medicine, Jiangsu Cancer Hospital, Nanjing, China
| | - Y Qiu
- Department of Critical Care Medicine, Jiangxi Cancer Hospital, Nanchang, China
| | - M Zhang
- Department of Critical Care Medicine, Hangzhou Cancer Hospital, Hangzhou, China
| | - Y Tao
- Department of Critical Care Medicine, Nantong Tumor Hospital, Nantong, China
| | - M Zhang
- Department of Critical Care Medicine, Baotou Cancer Hospital, Baotou, China
| | - L Xian
- Department of Critical Care Medicine, Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, China
| | - W Xie
- Department of Critical Care Medicine, The Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, China
| | - G Wang
- Department of Critical Care Medicine, The First Hospital of Jilin University, Changchun, China
| | - Y Wang
- Department of Critical Care Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - C Wang
- From the Department of Critical Care Medicine, Harbin Medical University Cancer Hospital, Harbin, China
| | - D-H Wang
- Department of Critical Care Medicine, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - K Yu
- Department of Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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Ding C, Xu J, Lin Z, Xu S, Cui X, Sun W, Tian G, Li C, Luo Z, Zhou Y, Yang Y. [Malaria control knowledge and behaviors and their influencing factors among residents in Banlao Township, Cangyuan County, Yunnan Province]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2023; 35:44-50. [PMID: 36974014 DOI: 10.16250/j.32.1374.2022248] [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] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
OBJECTIVE To investigate the awareness of malaria-related knowledge, the use of mosquito nets and their influencing factors among residents in Banlao Township, Cangyuan County, Yunnan Province. METHODS In August 2020, 19 settlement sites in Banlao Township, Cangyuan County, Lincang City, Yunnan Province were selected as study areas, and permanent residents at ages of 10 years and older were enrolled for a questionnaire survey, including residents' demographics, family economic status, malaria control knowledge and use of mosquito nets. In addition, the factors affecting the use of mosquito nets in the night prior to the survey were identified using multivariate logistic regression analysis. RESULTS A total of 320 questionnaires were allocated, and all were recovered (a 100% recovery rate). There were 316 valid questionnaires, with an effective recovery rate of 98.75%. The 316 respondents included 152 men and 164 women and 250 Chinese respondents and 66 foreign respondents. The awareness of clinical syndromes of malaria was significantly higher among Chinese residents (71.60%) than among foreign residents (50.00%) (χ2 = 11.03, P < 0.01), and the proportions of Chinese and foreign residents sleeping under mosquito nets were 46.00% and 69.70% on the night prior to the survey, respectively (χ2 = 11.73, P < 0.01). Multivariate logistic regression analysis identified ethnicity group and type of residence as factors affecting the use of mosquito nets in the night prior to the survey. CONCLUSIONS The awareness of malaria control knowledge, the coverage and the use of mosquito nets were low among residents in Banlao Township, Cangyuan County, Yunnan Province. Targeted health education is recommended to improve the awareness of malaria control knowledge and self-protection ability. In addition, improving the allocation of long-lasting mosquito nets and health education pertaining to their uses and increasing the proportion of using mosquito nets correctly is needed to prevent re-establishment of imported malaria.
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Affiliation(s)
- C Ding
- School of Public Health, Kunming Medical University, Kunming, Yunnan 650500, China
- Yunnan Institute of Parasitic Diseases, Yunnan Provincial Center of Malaria Research, Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Yunnan Innovative Team of Key Techniques for Vector Borne Disease Control and Prevention, Training Base of International Scientific Exchange and Education in Tropical Diseases for South and Southeast Asia, Pu'er, Yunnan 665000, China
| | - J Xu
- Yunnan Institute of Parasitic Diseases, Yunnan Provincial Center of Malaria Research, Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Yunnan Innovative Team of Key Techniques for Vector Borne Disease Control and Prevention, Training Base of International Scientific Exchange and Education in Tropical Diseases for South and Southeast Asia, Pu'er, Yunnan 665000, China
| | - Z Lin
- Yunnan Institute of Parasitic Diseases, Yunnan Provincial Center of Malaria Research, Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Yunnan Innovative Team of Key Techniques for Vector Borne Disease Control and Prevention, Training Base of International Scientific Exchange and Education in Tropical Diseases for South and Southeast Asia, Pu'er, Yunnan 665000, China
| | - S Xu
- Yunnan Institute of Parasitic Diseases, Yunnan Provincial Center of Malaria Research, Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Yunnan Innovative Team of Key Techniques for Vector Borne Disease Control and Prevention, Training Base of International Scientific Exchange and Education in Tropical Diseases for South and Southeast Asia, Pu'er, Yunnan 665000, China
| | - X Cui
- Lincang Center for Disease Control and Prevention, Yunnan Province, China
| | - W Sun
- Cangyuan Wa Autonomous County Center for Disease Control and Prevention, Yunnan Province, China
| | - G Tian
- Cangyuan Wa Autonomous County Center for Disease Control and Prevention, Yunnan Province, China
| | - C Li
- Banlao Township Healthcare Center, Cangyuan Wa Autonomous County, Yunnan Province, China
| | - Z Luo
- Lancang Lahu Autonomous County Center for Disease Control and Prevention, Yunnan Province, China
| | - Y Zhou
- Yunnan Institute of Parasitic Diseases, Yunnan Provincial Center of Malaria Research, Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Yunnan Innovative Team of Key Techniques for Vector Borne Disease Control and Prevention, Training Base of International Scientific Exchange and Education in Tropical Diseases for South and Southeast Asia, Pu'er, Yunnan 665000, China
| | - Y Yang
- School of Public Health, Kunming Medical University, Kunming, Yunnan 650500, China
- Yunnan Institute of Parasitic Diseases, Yunnan Provincial Center of Malaria Research, Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Yunnan Innovative Team of Key Techniques for Vector Borne Disease Control and Prevention, Training Base of International Scientific Exchange and Education in Tropical Diseases for South and Southeast Asia, Pu'er, Yunnan 665000, China
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Delgado J, Pritchard W, Varble N, Mikhail A, Owen J, Arrichiello A, Ray T, Lopez-Silva T, Morhard R, Yang J, Kassin M, Mueller J, Xu S, Schneider J, Karanian J, Wood B. Abstract No. 242 Distribution of Imageable Thermosensitive Drug-Loaded Gel in Ex Vivo Bovine Liver Depends on Needle Type and Injection Technique. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.305] [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: 02/26/2023] Open
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Sun L, Jiao W, Kong Y, Yang C, Xu S, Qiao Y, Chen S. [Changes in percentage of GATA3 + regulatory T cells and their pathogenic roles in allergic rhinitis]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:280-286. [PMID: 36946049 PMCID: PMC10034541 DOI: 10.12122/j.issn.1673-4254.2023.02.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
OBJECTIVE To investigate the changes in percentage of GATA3+ regulatory T (Treg) cells in patients with allergic rhinitis (AR) and mouse models. METHODS The nasal mucosa specimens were obtained from 6 AR patients and 6 control patients for detection of nasal mucosal inflammation. Peripheral blood mononuclear cells (PBMC) were collected from 12 AP patients and 12 control patients to determine the percentages of Treg cells and GATA3+ Treg cells. In a C57BL/6 mouse model of AR, the AR symptom score, peripheral blood OVA-sIgE level, and nasal mucosal inflammation were assessed, and the spleen of mice was collected for detecting the percentages of Treg cells and GATA3+ Treg cells and the expressions of Th2 cytokines. RESULTS Compared with the control patients, AR patients showed significantly increased eosinophil infiltration and goblet cell proliferation in the nasal mucosa (P < 0.01) and decreased percentages of Treg cells and GATA3+ Treg cells (P < 0.05). The mouse models of AR also had more obvious allergic symptoms, significantly increased OVA-sIgE level in peripheral blood, eosinophil infiltration and goblet cell hyperplasia (P < 0.01), markedly lowered percentages of Treg cells and GATA3+ Treg cells in the spleen (P < 0.01), and increased expressions of IL-4, IL-6 and IL-10 (P < 0.05). CONCLUSION The percentage of GATA3+ Treg cells is decreased in AR patients and mouse models. GATA3+ Treg cells possibly participate in Th2 cell immune response, both of which are involved in the occurrence and progression of AR, suggesting the potential of GATA3+ Treg cells as a new therapeutic target for AR.
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Affiliation(s)
- L Sun
- Department of Otolaryngology, Head and Neck Surgery, General Hospital of central Theater Command, Wuhan 430070, China
| | - W Jiao
- Department of Otolaryngology Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Y Kong
- Department of Otolaryngology Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - C Yang
- Department of Otolaryngology, Head and Neck Surgery, General Hospital of central Theater Command, Wuhan 430070, China
| | - S Xu
- Department of Otolaryngology Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Y Qiao
- Department of Otolaryngology Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - S Chen
- Department of Otolaryngology Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, China
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Sternbach AJ, Moore SL, Rikhter A, Zhang S, Jing R, Shao Y, Kim BSY, Xu S, Liu S, Edgar JH, Rubio A, Dean C, Hone J, Fogler MM, Basov DN. Negative refraction in hyperbolic hetero-bicrystals. Science 2023; 379:555-557. [PMID: 36758086 DOI: 10.1126/science.adf1065] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
We visualized negative refraction of phonon polaritons, which occurs at the interface between two natural crystals. The polaritons-hybrids of infrared photons and lattice vibrations-form collimated rays that display negative refraction when passing through a planar interface between the two hyperbolic van der Waals materials: molybdenum oxide (MoO3) and isotopically pure hexagonal boron nitride (h11BN). At a special frequency ω0, these rays can circulate along closed diamond-shaped trajectories. We have shown that polariton eigenmodes display regions of both positive and negative dispersion interrupted by multiple gaps that result from polaritonic-level repulsion and strong coupling.
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Affiliation(s)
- A J Sternbach
- Department of Physics, Columbia University, New York, NY, USA
| | - S L Moore
- Department of Physics, Columbia University, New York, NY, USA
| | - A Rikhter
- Department of Physics, University of California San Diego, San Diego, CA, USA
| | - S Zhang
- Department of Physics, Columbia University, New York, NY, USA
| | - R Jing
- Department of Physics, Columbia University, New York, NY, USA
| | - Y Shao
- Department of Physics, Columbia University, New York, NY, USA
| | - B S Y Kim
- Department of Mechanical Engineering, Columbia University, New York, NY, USA
| | - S Xu
- Department of Physics, Columbia University, New York, NY, USA
| | - S Liu
- Department of Mechanical Engineering, Columbia University, New York, NY, USA.,Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, KS, USA
| | - J H Edgar
- Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, KS, USA
| | - A Rubio
- Center for Computational Quantum Physics (CCQ), Flatiron Institute, New York, NY, USA.,Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee, Hamburg, Germany
| | - C Dean
- Department of Physics, Columbia University, New York, NY, USA
| | - J Hone
- Department of Mechanical Engineering, Columbia University, New York, NY, USA
| | - M M Fogler
- Department of Physics, University of California San Diego, San Diego, CA, USA
| | - D N Basov
- Department of Physics, Columbia University, New York, NY, USA
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Yang L, Liu H, Han J, Xu S, Zhang G, Wang Q, Du Y, Yang F, Zhao X, Shi G. Ultra-low-dose CT lung screening with artificial intelligence iterative reconstruction: evaluation via automatic nodule-detection software. Clin Radiol 2023:S0009-9260(23)00031-4. [PMID: 36948944 DOI: 10.1016/j.crad.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 01/04/2023] [Accepted: 01/15/2023] [Indexed: 02/05/2023]
Abstract
AIM To test the feasibility of ultra-low-dose (ULD) computed tomography (CT) combined with an artificial intelligence iterative reconstruction (AIIR) algorithm for screening pulmonary nodules using computer-assisted diagnosis (CAD). MATERIALS AND METHODS A chest phantom with artificial pulmonary nodules was first scanned using the routine protocol and the ULD protocol (3.28 versus 0.18 mSv) to compare the image quality and to test the acceptability of the ULD CT protocol. Next, 147 lung-screening patients were enrolled prospectively, undergoing an additional ULD CT immediately after their routine CT examination for clinical validation. Images were reconstructed with filtered back-projection (FBP), hybrid iterative reconstruction (HIR), the AIIR, and were imported to the CAD software for preliminary nodule detection. Subjective image quality on the phantom was scored using a five-point scale and compared using the Mann-Whitney U-test. Nodule detection using CAD was evaluated for ULD HIR and AIIR images using the routine dose image as reference. RESULTS Higher image quality was scored for AIIR than for FBP and HIR at ULD (p<0.001). As reported by CAD, 107 patients were presented with more than five nodules on routine dose images and were chosen to represent the challenging cases at an early stage of pulmonary disease. Among such, the performance of nodule detection by CAD on ULD HIR and AIIR images was 75.2% and 92.2% of the routine dose image, respectively. CONCLUSION Combined with AIIR, it was feasible to use an ULD CT protocol with 95% dose reduction for CAD-based screening of pulmonary nodules.
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Affiliation(s)
- L Yang
- Department of Radiology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - H Liu
- Department of Radiology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - J Han
- United Imaging Healthcare, Shanghai, China
| | - S Xu
- United Imaging Healthcare, Shanghai, China
| | - G Zhang
- United Imaging Healthcare, Shanghai, China
| | - Q Wang
- Department of Radiology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Y Du
- Department of Radiology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - F Yang
- Department of Radiology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - X Zhao
- Department of Radiology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - G Shi
- Department of Radiology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
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Li D, De-Chao F, Xu S, Wei-Zhen Z, Ping H. M7G-related-lncRNA signature predicts the prognosis correlating with immunotherapy and chemotherapy responses in bladder cancer patients. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)01099-0] [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: 02/12/2023]
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Lv H, Huang C, Li J, Zhang F, Gai C, Liu Z, Xu S, Wang M, Li Z, Tian Z. The efficacy and safety of neoadjuvant sintilimab combined with chemotherapy in elderly patients with locally advanced esophageal squamous cell carcinoma. J Clin Oncol 2023. [DOI: 10.1200/jco.2023.41.4_suppl.378] [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: 01/25/2023] Open
Abstract
378 Background: Neoadjuvant PD-1 inhibitor combined with chemotherapy has been reported to improve the pathologic response of locally advanced esophageal squamous cell carcinoma (ESCC). However, systematic report of efficacy and safety data in elderly Chinese patients is lacking. This study we report the efficacy and safety outcomes of neoadjuvant sintilimab combined with chemotherapy in elderly patients with locally advanced ESCC. Methods: Elderly patients (70 years or older) with locally advanced ESCC received neoadjuvant sintilimab combined with albumin-bound paclitaxel and nedaplatin in our institution between July 2019 and September 2022 were reviewed. Efficacy including pathologic response, short-term survival outcomes, and safety profile retrospectively were evaluated. Results: Thirty-one eligible patients were included in the analysis, with median age 72 years (range 70-78 years), male 18 (58.1%), Upper/middle/lower tumors 2(6.5%)/15(48.4%) /14(45.2%), ECOG PS 0/1-2 15 (48.4%)/16 (51.6%), clinical stage II/III 14 (45.2%)/17 (54.8%). The median number of neoadjuvant cycles was 3 (range 2-4). All 31 patients achieved R0 resection. Postoperative pathology showed pCR rate was 45.2% (95CI 27.3%-64.0%), MPR rate was 58.1% (95CI 39.1%-75.5%), tumor down-staging rate was 90.3% (95CI 74.2%-98.0%). With a median follow-up of 15.9 months (range 3.0-32.3), 1 (4.2%) patient had disease recurrence and died. The median DFS and median OS had not been reached yet, 2-year DFS rate was 95.0% (95%CI 85.9%-100.0%). Grade 3-4 Surgical complications occurred in 1 (4.2%) patient, with a grade 3 pulmonary infection. The median operation time was 332 min (range, 142–470 min), and the median intraoperative blood loss was 150 ml (range, 80–300 ml). The median hospital stay was 12.5 days (range 7-22). There was no perioperative death. Grade 3-4 TRAEs were Neutropenia (9.7%), leukopenia (9.7%), abnormal liver function (6.5%), anemia (6.5%), sensory neuropathy (3.2%), pneumonia (3.2%). Conclusions: Our results preliminarily confirms that Chinese elderly patients with locally advanced ESCC can benefit from neoadjuvant sintilimab combined with chemotherapy, similarly with this combination treatment in all age patients.
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Affiliation(s)
- Huilai Lv
- The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Chao Huang
- The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jiachen Li
- The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Fan Zhang
- The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Chunyue Gai
- The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zhao Liu
- The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Shi Xu
- The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Mingbo Wang
- The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zhenhua Li
- The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Ziqiang Tian
- The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
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Li D, Xu S, Zhu W, Han P. Identification of endothelial-related molecular subtypes for bladder cancer patients based on single-cell and bulk RNA sequencing data. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00479-7] [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: 02/12/2023]
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Li Z, Xia H, Sharp TE, LaPenna KB, Katsouda A, Elrod JW, Pfeilschifter J, Beck KF, Xu S, Xian M, Goodchild TT, Papapetropoulos A, Lefer DJ. Hydrogen Sulfide Modulates Endothelial-Mesenchymal Transition in Heart Failure. Circ Res 2023; 132:154-166. [PMID: 36575984 PMCID: PMC9852013 DOI: 10.1161/circresaha.122.321326] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 12/12/2022] [Indexed: 12/29/2022]
Abstract
BACKGROUND Hydrogen sulfide is a critical endogenous signaling molecule that exerts protective effects in the setting of heart failure. Cystathionine γ-lyase (CSE), 1 of 3 hydrogen-sulfide-producing enzyme, is predominantly localized in the vascular endothelium. The interaction between the endothelial CSE-hydrogen sulfide axis and endothelial-mesenchymal transition, an important pathological process contributing to the formation of fibrosis, has yet to be investigated. METHODS Endothelial-cell-specific CSE knockout and Endothelial cell-CSE overexpressing mice were subjected to transverse aortic constriction to induce heart failure with reduced ejection fraction. Cardiac function, vascular reactivity, and treadmill exercise capacity were measured to determine the severity of heart failure. Histological and gene expression analyses were performed to investigate changes in cardiac fibrosis and the activation of endothelial-mesenchymal transition. RESULTS Endothelial-cell-specific CSE knockout mice exhibited increased endothelial-mesenchymal transition and reduced nitric oxide bioavailability in the myocardium, which was associated with increased cardiac fibrosis, impaired cardiac and vascular function, and worsened exercise performance. In contrast, genetic overexpression of CSE in endothelial cells led to increased myocardial nitric oxide, decreased endothelial-mesenchymal transition and cardiac fibrosis, preserved cardiac and endothelial function, and improved exercise capacity. CONCLUSIONS Our data demonstrate that endothelial CSE modulates endothelial-mesenchymal transition and ameliorate the severity of pressure-overload-induced heart failure, in part, through nitric oxide-related mechanisms. These data further suggest that endothelium-derived hydrogen sulfide is a potential therapeutic for the treatment of heart failure with reduced ejection fraction.
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Affiliation(s)
- Zhen Li
- Department of Cardiac Surgery, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Huijing Xia
- Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Thomas E. Sharp
- Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Kyle B. LaPenna
- Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Antonia Katsouda
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Greece; Center of Clinical, Experimental Surgery & Translational Research, Biomedical Research Foundation of the Academy of Athens, Greece
| | - John W. Elrod
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA
| | - Josef Pfeilschifter
- Institute of Pharmacology and Toxicology, Goethe University, Frankfurt am Main, Germany
| | - Karl-Friedrich Beck
- Institute of Pharmacology and Toxicology, Goethe University, Frankfurt am Main, Germany
| | - Shi Xu
- Department of Chemistry, Brown University, Providence, Rhode Island
| | - Ming Xian
- Department of Chemistry, Brown University, Providence, Rhode Island
| | - Traci T. Goodchild
- Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Andreas Papapetropoulos
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Greece; Center of Clinical, Experimental Surgery & Translational Research, Biomedical Research Foundation of the Academy of Athens, Greece
| | - David J. Lefer
- Department of Cardiac Surgery, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
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Lv H, Huang C, Li J, Zhang F, Gai C, Liu Z, Xu S, Wang M, Li Z, Tian Z. The survival outcomes of neoadjuvant sintilimab combined with chemotherapy in patients with locally advanced esophageal squamous cell carcinoma. Front Immunol 2023; 13:1100750. [PMID: 36741358 PMCID: PMC9892710 DOI: 10.3389/fimmu.2022.1100750] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 12/28/2022] [Indexed: 01/20/2023] Open
Abstract
Background Neoadjuvant programmed death receptor-1 (PD-1) inhibitor combined with chemotherapy has been reported to improve the pathological response of locally advanced esophageal squamous cell carcinoma (ESCC), but the systematic report on survival follow-up is quite few. This study we will report the survival follow-up outcomes after a median follow-up of 21.1 months. Methods This was a real-world retrospective study. Locally advanced ESCC patients treated with neoadjuvant sintilimab combined with albumin-bound paclitaxel and nedaplatin followed by surgery and completed at least 1-year follow-up were reviewed. The primary outcome was disease-free survival (DFS) at 24 months. The secondary outcome was overall survival (OS) at 24 months. Results Ninety eligible patients were included in the analysis between July 2019 and October 2021. The median number of neoadjuvant cycles was 3 (range 2-4). All patients achieved R0 resection. With a median follow-up of 21.1 months (range 14.0-39.0), the median DFS and median OS had not reached, 2-year DFS rate was 78.3% (95%CI 68.8%-89.1%) and 2-years OS rate was 88.0% (95%CI 80.6%-96.0%). Postoperative pathological stage, pCR, MPR, tumor down-staging were significantly correlated with favorable survival outcome. Univariable and multivariable Cox regression analysis identified cycle number of neoadjuvant treatment as independent predictor of DFS. Conclusion Our results preliminarily show a survival benefit of neoadjuvant sintilimab combined with chemotherapy in locally advanced ESCC.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Ziqiang Tian
- Department of Thoracic Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
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Wang D, Zhang Y, Wang X, Zhang L, Xu S. Construction and validation of an aging-related gene signature predicting the prognosis of pancreatic cancer. Front Genet 2023; 14:1022265. [PMID: 36741321 PMCID: PMC9889561 DOI: 10.3389/fgene.2023.1022265] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 01/10/2023] [Indexed: 01/20/2023] Open
Abstract
Background: Pancreatic cancer is a malignancy with a high mortality rate and worse prognosis. Recently, public databases and bioinformatics tools make it easy to develop the prognostic risk model of pancreatic cancer, but the aging-related risk signature has not been reported. The present study aimed to identify an aging-related risk signature with potential prognostic value for pancreatic cancer patients. Method: Gene expression profiling and human clinical information of pancreatic cancer were derived from The Cancer Genome Atlas database (TCGA). Aging-related gene sets were downloaded from The Molecular Signatures Database and aging-related genes were obtained from the Human Ageing Genomic Resources database. Firstly, Gene set enrichment analysis was carried out to investigate the role of aging process in pancreatic cancer. Secondly, differentially expressed genes and aging-related prognostic genes were screened on the basis of the overall survival information. Then, univariate COX and LASSO analysis were performed to establish an aging-related risk signature of pancreatic cancer patients. To facilitate clinical application, a nomogram was established to predict the survival rates of PCa patients. The correlations of risk score with clinical features and immune status were evaluated. Finally, potential therapeutic drugs were screened based on the connectivity map (Cmap) database and verified by molecular docking. For further validation, the protein levels of aging-related genes in normal and tumor tissues were detected in the Human Protein Atlas (HPA) database. Result: The genes of pancreatic cancer were markedly enriched in several aging-associated signaling pathways. We identified 14 key aging-related genes related to prognosis from 9,020 differentially expressed genes and establish an aging-related risk signature. This risk model indicated a strong prognostic capability both in the training set of TCGA cohort and the validation set of PACA-CA cohort and GSE62452 cohort. A nomogram combining risk score and clinical variables was built, and calibration curve and Decision curve analysis (DCA) have proved that it has a good predictive value. Additionally, the risk score was tightly linked with tumor immune microenvironment, immune checkpoints and proinflammatory factors. Moreover, a candidate drug, BRD-A47144777, was screened and verified by molecular docking, indicating this drug has the potential to treat PCa. The protein expression levels of GSK3B, SERPINE1, TOP2A, FEN1 and HIC1 were consistent with our predicted results. Conclusion: In conclusion, we identified an aging-related signature and nomogram with high prediction performance of survival and immune cell infiltration for pancreatic cancer. This signature might potentially help in providing personalized immunotherapy for patients with pancreatic cancer.
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Affiliation(s)
- Dengchuan Wang
- Office of Medical Ethics, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong, China
| | - Yonggang Zhang
- Department of Clinical Laboratory, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong, China
| | - Xiaokang Wang
- Department of Pharmacy, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong, China
| | - Limei Zhang
- Department of Oncology, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong, China
| | - Shi Xu
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong, China,*Correspondence: Shi Xu,
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Abstract
Redox signaling molecules include a number of reactive oxygen species (ROS), reactive nitrogen species (RNS), and reactive sulfur species (RSS). These molecules work collectively in the regulation of many physiological processes. Understanding the crosstalk mechanisms in these signaling molecules is important but challenging. The development of donor compounds of ROS/RNS/RSS will aid the advances in this field. While many donors that can release one ROS/RNS/RSS have been developed, dual donors that can release two signaling species and facilitate their crosstalk studies are still very rare. Those limited examples lack the ability to precisely control the timing of two releases. In this work, a 2-methoxy-6-naphthacyl-derived tertiary SNO compound, Naph-SNO, was designed and evaluated as the dual donor for NO and H2S2. The 2-methoxy-6-naphthacyl structure was demonstrated to be a novel photoremovable protecting group that could directly uncage C-S bonds. Under the irradiation of lights with different wavelengths (visible or UV), Naph-SNO could release NO and H2S2 in a stepwise manner, or simultaneously (i.e., likely producing the crosstalk product HSNO/HSSNO). In addition, the release of payloads from the donor also produced an end product with blue fluorescence. Therefore, the release process could be easily monitored in "real time." This controllable photo-triggered release strategy has the potential to be used in the design of other RNS/RSS dual donors.
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Affiliation(s)
- Biswajit Roy
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Meg Shieh
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Shi Xu
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Xiang Ni
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Ming Xian
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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Zhao R, Liu Z, Li Z, Xu S, Sheng X. Gravity induces asymmetric Ca 2+ spikes in the root cap in the early stage of gravitropism. Plant Signal Behav 2022; 17:2025325. [PMID: 35023420 PMCID: PMC9176234 DOI: 10.1080/15592324.2021.2025325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/30/2021] [Accepted: 12/30/2021] [Indexed: 05/19/2023]
Abstract
Gravitropism is an important strategy for the adaptation of plants to the changing environment. Previous reports indicated that Ca2+ participated in plant gravity response. However, present information on the functions of Ca2+ in plant gravitropism was obtained mainly on coleoptiles, hypocotyls, and petioles, little is known about the dynamic changes of Ca2+ during root gravitropism. In the present study, the transgenic Arabidopsis thaliana R-GECO1 was placed horizontally and subsequently vertically on a refitted Leica SP8 laser scanning confocal microscopy with a vertical stage. Real-time observations indicated that gravistimulation induced not only an increase in the Ca2+ concentration, but also an accelerated occurrence of Ca2+ sparks in the root cap, especially in the lower side of the lateral root cap, indicating a strong tie between Ca2+ dynamics and gravistimulation during the early stage of root gravity response.
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Affiliation(s)
- Ruoxin Zhao
- College of Life Sciences, Capital Normal University, Beijing, China
| | - Zonghao Liu
- College of Life Sciences, Capital Normal University, Beijing, China
| | - Ziwei Li
- College of Life Sciences, Capital Normal University, Beijing, China
| | - Shi Xu
- College of Life Sciences, Capital Normal University, Beijing, China
| | - Xianyong Sheng
- College of Life Sciences, Capital Normal University, Beijing, China
- CONTACT Xianyong Sheng College of Life Sciences, Capital Normal University, North Xisanhuan 105, Beijing100048, China
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Liu Y, Liu Y, Zeng C, Li W, Ke C, Xu S. Concentrated Growth Factor Promotes Wound Healing Potential of HaCaT Cells by Activating the RAS Signaling Pathway. Front Biosci (Landmark Ed) 2022; 27:319. [PMID: 36624939 DOI: 10.31083/j.fbl2712319] [Citation(s) in RCA: 2] [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: 09/13/2022] [Revised: 11/06/2022] [Accepted: 11/11/2022] [Indexed: 12/14/2022]
Abstract
OBJECTIVE The aim of this study was to explore the effect of concentrated growth factor (CGF) on the wound healing potential of human epidermal cells (HaCaT) in vitro and in vivo. METHODS CGF was extracted from venous blood using the centrifugal separation method. The CGF-conditioned medium was prepared from CGF gel immersed in Dulbecco's Modified Eagle medium. Crystal violet staining and wound healing assay were used to evaluate the proliferation and migration of HaCaT cells, respectively. Lipopolysaccharide (LPS) was used to test the anti-inflammatory function of CGF. An ELISA kit was employed to detect the concentration of growth factors and interleukins in CGF medium. mRNA and protein levels of angiogenic biomarkers (Angiopoietin-1 (ANGPT-1), vascular endothelial growth factor-A (VEGF-A) and Angiopoietin-2 (ANGPT-2) ) were determined by quantitative polymerase chain reaction (qPCR) and Western blot, respectively. A dorsal excisional wound model was recruited to test the wound healing effect of CGF in mice. RESULTS Three-day treatment of HaCaT cells with CGF significantly promoted cell proliferation, which was followed by an increase in Vascular Endothelial Growth Factor (VEGF) and Fibroblast Growth Factor (FGF) levels in the medium. Cytokines (IL-6, IL-8 and TNF-α) were increased in LPS-stimulated HaCaT cells after 3 days, and CGF slightly inhibited the mRNA expression of these cytokines. The RAS signaling pathway was activated upon CGF treatment. Both RAS knockdown and an inhibitor of RAS (zoledronic acid) could block the migration of HaCaT cells after CGF treatment. Protein expressions of CD31, ANGPT-1, and VEGF-A were up-regulated in a dose-dependent manner upon CGF exposure. The protein level of ANGPT-2 was down-regulated after CGF treatment. CGF could promote wound healing in vivo, as demonstrated using the full skin defect model in nude mice. CONCLUSIONS CGF was shown to promote wound repair in vitro and in vivo. The RAS cell signaling pathway was responsible for CGF stimulating the wound healing potential of HaCaT cells.
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Affiliation(s)
- Yueming Liu
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, 518110 Shenzhen, Guangdong, China
| | - Yang Liu
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, 518110 Shenzhen, Guangdong, China
| | - Changchun Zeng
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, 518110 Shenzhen, Guangdong, China
| | - Weishan Li
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, 518110 Shenzhen, Guangdong, China
| | - Changneng Ke
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, 518110 Shenzhen, Guangdong, China
| | - Shi Xu
- Department of Burn and Plastic Surgery, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, 518110 Shenzhen, Guangdong, China.,Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Affiliated Central Hospital of Shenzhen Longhua District, Guangdong Medical University, 518110 Shenzhen, Guangdong, China
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Zhao Y, Wang X, Zhang M, Liu J, Pu H, Li X, Zhao H, Xu S, Yang M, Bai S, Guo L, Zhao L, Li Y, Wang Y. 104P Camrelizumab combined with chemotherapy and apatinib as first-line therapy for extensive-stage small cell lung cancer: A phase II single-arm, exploratory research. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Day JJ, Zhang T, Hamsath A, Neill DL, Xu S, Qian WJ, Xian M. A Chemical Approach for the Specific Generation of Cysteine Sulfinylation. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154284] [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: 12/03/2022]
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Shieh M, Xu S, Lederberg OL, Xian M. Detection of sulfane sulfur species in biological systems. Redox Biol 2022; 57:102502. [PMID: 36252340 PMCID: PMC9579362 DOI: 10.1016/j.redox.2022.102502] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/21/2022] [Accepted: 10/06/2022] [Indexed: 11/09/2022] Open
Abstract
Sulfane sulfur species such as hydropersulfides (RSSH), polysulfides (RSnR), and hydrogen polysulfides (H2Sn) are critically involved in sulfur-mediated redox signaling, but their detailed mechanisms of action need further clarification. Therefore, there is a need to develop selective and sensitive sulfane sulfur detection methods to gauge a better understanding of their functions. This review summarizes current detection methods that include cyanolysis, chemical derivatization and mass spectrometry, proteomic analysis, fluorescent probes, and resonance synchronous/Raman spectroscopic methods. The design principles, advantages, applications, and limitations of each method are discussed, along with suggested directions for future research on these methods. The development of robust detection methods for sulfane sulfur species will help to elucidate their mechanisms and functions in biological systems.
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Affiliation(s)
- Meg Shieh
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Shi Xu
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Oren L Lederberg
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Ming Xian
- Department of Chemistry, Brown University, Providence, RI, 02912, USA.
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Teng X, Li X, Xu S, Zhang J, Bai Y, Ba X, Wu Z, Liu S. ERBB2 mRNA expression in HER2-low breast cancer. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01600-8] [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: 11/19/2022]
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