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Luo K, Wang L, Wang MX, Du R, Tang L, Yang KK, Wang YZ. 4D Printing of Biocompatible Scaffolds via In Situ Photo-crosslinking from Shape Memory Copolyesters. ACS Appl Mater Interfaces 2023; 15:44373-44383. [PMID: 37669475 DOI: 10.1021/acsami.3c10747] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
The complexity of surgical treatments for large-area soft tissue injuries makes placing large implants into injury sites challenging. Aliphatic polyesters are often used for scaffold preparation in tissue engineering owing to their excellent biodegradability and biocompatibility. Scaffolds with shape-memory effect (SME) can also avoid large-volume trauma during the implantation. However, the complexity and diversity of diseases require more adaptable and precise processing methods. Four-dimensional (4D) printing, a booming smart material additive manufacturing technology, provides a new opportunity for developing shape memory scaffolds. With the aim of personalized or patient-adaptable soft tissues such as blood vessels, we developed a feasible strategy for fabricating scaffolds with fine architectures using 4D printing crosslinkable shape memory linear copolyesters using fused deposition modeling (FDM). To overcome the weak bonding strength of each printed layer during FDM, a catalyst-free photo-crosslinkable functional group derived from biocompatible cinnamic acid was embedded into the linear copolyesters as in situ crosslinking points during FDM printing. Under ultraviolet-assisted irradiation, the resulting 4D scaffold models demonstrated excellent SME, desirable mechanical performance, and good stability in a water environment owing to the chemical bonding between each layer. Moreover, the excellent biocompatibility of the scaffold was evaluated in vitro and in vivo. The developed composite scaffolds could be used for minimally invasive soft tissue repair.
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Affiliation(s)
- Kun Luo
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Li Wang
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China
- Department of Biomedical Engineering, School of Big Health and Intelligent Engineering, Chengdu 610500, China
| | - Man-Xi Wang
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Rui Du
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Li Tang
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Ke-Ke Yang
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yu-Zhong Wang
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China
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Du R, Zhao B, Luo K, Wang MX, Yuan Q, Yu LX, Yang KK, Wang YZ. Shape Memory Polyester Scaffold Promotes Bone Defect Repair through Enhanced Osteogenic Ability and Mechanical Stability. ACS Appl Mater Interfaces 2023; 15:42930-42941. [PMID: 37643157 DOI: 10.1021/acsami.3c06902] [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] [Indexed: 08/31/2023]
Abstract
Bone tissue engineering involving scaffolds is recognized as the ideal approach for bone defect repair. However, scaffold materials exhibit several limitations, such as low bioactivity, less osseointegration, and poor processability, for developing bone tissue engineering. Herein, a bioactive and shape memory bone scaffold was fabricated using the biodegradable polyester copolymer's four-dimensional fused deposition modeling. The poly(ε-caprolactone) segment with a transition temperature near body temperature was selected as the molecular switch to realize the shape memory effect. Another copolymer segment, i.e., poly(propylene fumarate), was introduced for post-cross-linking and improving the regulation effect of the resulting bioadaptable scaffold on osteogenesis. To mimic the porous structures and mechanical properties of the native spongy bone, the pore size of the printed scaffold was set as ∼300 μm, and a comparable compression modulus was achieved after photo-cross-linking. Compared with the pristine poly(ε-caprolactone), the scaffold made from fumarate-functionalized copolymer considerably enhanced the adhesion and osteogenic differentiation of MC3T3-E1 cells in vitro. In vivo experiments indicated that the bioactive shape memory scaffold could quickly adapt to the defect geometry during implantation via shape change, and bone regeneration at the defect site was remarkably promoted, providing a promising strategy to treat bone defects in the clinic, substantial bone defects with irregular geometry.
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Affiliation(s)
- Rui Du
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610064, China
| | - Bin Zhao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610064, China
| | - Kun Luo
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610064, China
| | - Man-Xi Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610064, China
| | - Quan Yuan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610064, China
| | - Lei-Xiao Yu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610064, China
| | - Ke-Ke Yang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610064, China
| | - Yu-Zhong Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610064, China
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Wu YD, Yu KK, An MY, Li ZY, Wang BD, Li YB, Wang L, Wang MX, Li CB. [Clinical efficacy of the treatment of bilateral gluteal muscle contracture by inside-out iliotibial band release under arthroscopy in the supine position]. Zhonghua Yi Xue Za Zhi 2023; 103:1611-1616. [PMID: 37248060 DOI: 10.3760/cma.j.cn112137-20221212-02633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Objective: To investigate the clinical efficacy of bilateral gluteal muscle contracture treated with inside-out iliotibial band release under arthroscopy in the supine position. Methods: A prospective non-randomized controlled trial. Forty-six patients admitted to the Department of Sports Medicine, Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital from April 2021 to August 2022 for bilateral gluteal muscle contracture and proposed surgical treatment were enrolled. The subjects were divided into two groups according to the preferred surgical protocols of the patients: the supine position group was treated with inside-out iliotibial band release under arthroscopy in the supine position, and the operation in lateral position group was carried out with outside-in iliotibial band release under arthroscopy in the lateral position. The total duration of non-surgical operations and the total duration of surgical operations were recorded for all patients. The gluteal muscle contracture disability scale within 3 days before surgery and at least 2 months after surgery were compared between the two groups, and the occurrence of complications between the two groups was compared too. Results: There were 26 cases in the supine position group, 11 males and 15 females with a mean age of (31.8±7.3) years; and there were 20 cases in the lateral position group, 7 males and 13 females with a mean age of (30.6±6.3) years. The differences in gender, age, body mass index (BMI) and postoperative follow-up time between the two groups were not statistically significant (all P>0.05). The total duration of non-surgical operations was shorter in the supine position group than in the lateral position group [(47.9±10.4) min vs (63.9±7.5) min, P<0.001]. There was no statistically significant difference in the total duration of surgical operations between the supine position group and the lateral position group [31.0(27.0, 43.5) min vs 33.0(24.8, 38.0) min, P>0.05]. The postoperative gluteal muscle contracture disability scales were significantly improved in both the supine position and lateral position groups when compared with those before the operation [93.0 (85.0, 98.0) vs 61.0 (50.5, 66.8), P<0.001 and 88.5±6.9 vs 63.6±9.6, P<0.001, respectively]. There was no statistically significant difference in the gluteal muscle contracture disability scale between the supine position and lateral position groups before and 2 months after surgery [59.3±11.9 vs 63.6±9.6 and 93.0 (85.0, 98.0) vs 89.5(84.0, 94.8), both P>0.05, respectively]. Two patients in each group developed subcutaneous hematoma after surgery, and all of them resolved within 2 weeks after surgery, the difference in complication incidence rate was not statistically significant (P>0.05). No postoperative complications such as fat liquefaction in the operated area, infection, decreased hip abductor muscle strength or nerve injury in the lower extremity were observed in both groups. Conclusion: The treatment of bilateral gluteal muscle contracture by inside-out iliotibial band release under arthroscopy in the supine position can effectively improve clinical efficiency, with definite efficacy, and it is an operative program worth promoting.
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Affiliation(s)
- Y D Wu
- Department of Sports Medicine, Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
| | - K K Yu
- Department of Sports Medicine, Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
| | - M Y An
- Department of Sports Medicine, Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
| | - Z Y Li
- Department of Sports Medicine, Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
| | - B D Wang
- Department of Sports Medicine, Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
| | - Y B Li
- Department of Sports Medicine, Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
| | - L Wang
- Department of Sports Medicine, Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
| | - M X Wang
- Department of Sports Medicine, Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
| | - C B Li
- Department of Sports Medicine, Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
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Wang MX, Zhao YM, Liu X, Wen Y, Sun Q. [Convulsion after stopped taking voriconazole of ANCA-associated vasculitis in a hemodialysis child]. Zhonghua Er Ke Za Zhi 2023; 61:368-370. [PMID: 37011986 DOI: 10.3760/cma.j.cn112140-20220923-00831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Affiliation(s)
- M X Wang
- Department of Blood Purification Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Chronic Kidney Disease and Blood Purification, Beijing 100045, China
| | - Y M Zhao
- Department of Pharmacy, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - X Liu
- Department of Blood Purification Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Chronic Kidney Disease and Blood Purification, Beijing 100045, China
| | - Y Wen
- Department of Radiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Q Sun
- Department of Blood Purification Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Chronic Kidney Disease and Blood Purification, Beijing 100045, China
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Wang MX, Wang YT, Wang L, Zhang J, An MY, Wu YD, Yu KK, He HY, Li CB. [Outcomes of fluoroscopy-free hip arthroscopy technique in the treatment of femoroacetabular impingement syndrome]. Zhonghua Yi Xue Za Zhi 2023; 103:809-815. [PMID: 36925113 DOI: 10.3760/cma.j.cn112137-20220912-01928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Objective: To evaluate the effect of fluoroscopy-free technique in the arthroscopic treatment of femoroacetabular impingement syndrome (FAIS). Methods: A retrospective cohort study. Clinical data of FAI patients treated with hip arthroscopy in the No.4 Medical Center, PLA General Hospital from October 2018 to December 2021 were retrospectively analyzed. The patients were divided into two groups according to the surgical procedure: the fluoroscopy group and the fluoroscopy-free group. The operation time and modified Harris hip score (mHHS), international hip outcome tool (iHOT12) and visual analogue scale (VAS) of hip joint pain before and after the operation were observed and compared between the two groups. And the incidence of surgical complications in the two groups were compared too. Results: A total of 460 patients (213 males and 247 females) [aged (32.6±8.3) years (15-67 years)] with valid follow-up were included in this study. There were 275 cases in the fluoroscopy-free group and 185 cases in the fluoroscopy group. The operation time was shorter in the fluoroscopy-free group when compared with that in the fluoroscopy group, and the difference was statistically significant [(93.36±12.54) min vs (115.62±6.03) min, P<0.001]. In both groups, the VAS scores decreased and the mHHS scores and iHOT12 scores improved significantly at the last follow-up when compared with those before the operation (all P<0.001); however, there was no significant difference in the scores between the two groups (all P>0.05). The complication rate in the fluoroscopy-free group was 10.18% (28/275), and it was 10.81%(20/185) in the fluoroscopy group (P=0.829). Conclusion: Fluoroscopy-free hip arthroscopy technique for FAI can avoid radiation and shorten the operation time, but it does not increase the incidence of complications with reliable clinical outcomes.
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Affiliation(s)
- M X Wang
- Department of Orthopedics, the No.4 Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - Y T Wang
- Department of Orthopedics, the No.4 Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - L Wang
- Department of Orthopedics, the No.4 Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - J Zhang
- Department of Orthopedics, the No.4 Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - M Y An
- Department of Orthopedics, the No.4 Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - Y D Wu
- Department of Orthopedics, the No.4 Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - K K Yu
- Department of Orthopedics, the No.4 Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - H Y He
- Department of Orthopedics, the No.4 Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - C B Li
- Department of Orthopedics, the No.4 Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
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Yang HF, He KY, Koo J, Shen SW, Zhang SH, Liu G, Liu YZ, Chen C, Liang AJ, Huang K, Wang MX, Gao JJ, Luo X, Yang LX, Liu JP, Sun YP, Yan SC, Yan BH, Chen YL, Xi X, Liu ZK. Visualization of Chiral Electronic Structure and Anomalous Optical Response in a Material with Chiral Charge Density Waves. Phys Rev Lett 2022; 129:156401. [PMID: 36269973 DOI: 10.1103/physrevlett.129.156401] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 09/07/2022] [Indexed: 05/02/2023]
Abstract
Chiral materials have attracted significant research interests as they exhibit intriguing physical properties, such as chiral optical response, spin-momentum locking, and chiral induced spin selectivity. Recently, layered transition metal dichalcogenide 1T-TaS_{2} has been found to host a chiral charge density wave (CDW) order. Nevertheless, the physical consequences of the chiral order, for example, in electronic structures and the optical properties, are yet to be explored. Here, we report the spectroscopic visualization of an emergent chiral electronic band structure in the CDW phase, characterized by windmill-shaped Fermi surfaces. We uncover a remarkable chirality-dependent circularly polarized Raman response due to the salient in-plane chiral symmetry of CDW, although the ordinary circular dichroism vanishes. Chiral Fermi surfaces and anomalous Raman responses coincide with the CDW transition, proving their lattice origin. Our Letter paves a path to manipulate the chiral electronic and optical properties in two-dimensional materials and explore applications in polarization optics and spintronics.
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Affiliation(s)
- H F Yang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China
| | - K Y He
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, People's Republic of China
| | - J Koo
- Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot 76100, Israel
| | - S W Shen
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China
| | - S H Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China
| | - G Liu
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, People's Republic of China
| | - Y Z Liu
- Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot 76100, Israel
| | - C Chen
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China
- Department of Physics, University of Oxford, Oxford, OX1 3PU, United Kingdom
| | - A J Liang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China
- ShanghaiTech Laboratory for Topological Physics, Shanghai 201210, People's Republic of China
| | - K Huang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China
| | - M X Wang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China
- ShanghaiTech Laboratory for Topological Physics, Shanghai 201210, People's Republic of China
| | - J J Gao
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, HFIPS, Hefei 230031, People's Republic of China
| | - X Luo
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, HFIPS, Hefei 230031, People's Republic of China
| | - L X Yang
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China
| | - J P Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China
- ShanghaiTech Laboratory for Topological Physics, Shanghai 201210, People's Republic of China
| | - Y P Sun
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, HFIPS, Hefei 230031, People's Republic of China
- High Magnetic Field Laboratory, Chinese Academy of Sciences, HFIPS, Hefei, 230031, People's Republic of China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
| | - S C Yan
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China
- ShanghaiTech Laboratory for Topological Physics, Shanghai 201210, People's Republic of China
| | - B H Yan
- Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Y L Chen
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China
- Department of Physics, University of Oxford, Oxford, OX1 3PU, United Kingdom
- ShanghaiTech Laboratory for Topological Physics, Shanghai 201210, People's Republic of China
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China
| | - X Xi
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, People's Republic of China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
| | - Z K Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China
- ShanghaiTech Laboratory for Topological Physics, Shanghai 201210, People's Republic of China
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Li XW, Xu PF, Wu QW, Wang MX. [Posterior mediastinal Müllerian cyst: report of two cases]. Zhonghua Bing Li Xue Za Zhi 2022; 51:553-555. [PMID: 35673731 DOI: 10.3760/cma.j.cn112151-20211011-00738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- X W Li
- Department of Pathology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 437900, China
| | - P F Xu
- Department of Pathology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 437900, China
| | - Q W Wu
- Department of Pathology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 437900, China
| | - M X Wang
- Department of Pathology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 437900, China
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Li X, Li J, Shi YW, Wu GD, Wang MX, Chen Y, Dong CM. [A case report of Streptococcus suis meningoencephalitis diagnosed by metagenomic next-generation sequencing of cerebrospinal fluid and blood]. Zhonghua Nei Ke Za Zhi 2021; 60:1176-1179. [PMID: 34856692 DOI: 10.3760/cma.j.cn112138-20210113-00034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- X Li
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou 730000, China
| | - J Li
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou 730000, China
| | - Y W Shi
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou 730000, China
| | - G D Wu
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou 730000, China
| | - M X Wang
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou 730000, China
| | - Y Chen
- Intensive Care Unit, Lanzhou University Second Hospital, Lanzhou 730000, China
| | - C M Dong
- Intensive Care Unit, Lanzhou University Second Hospital, Lanzhou 730000, China
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Wang MX, Liu Q, Zhang Y, Zhu D. [Chromosomal karyotypes and C-band analysis of Triatoma rubrofasciata in China]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021; 33:297-300. [PMID: 34286533 DOI: 10.16250/j.32.1374.2021036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To investigate the karyotypes and C bands of Triatoma rubrofasciata in China, so as to understand its chromosome number, morphology and C-band staining of T. rubrofasciata. METHODS The testis specimens were sampled from male T. rubrofasciata collected from Shunde City, Guangdong Province, prepared into slides of metaphase chromosomes and subjected to Giemsa staining and C-band staining. The morphology of metaphase chromosomes and the location of heterochromatin were observed using microscopy, and the long arm and short arm of each chromosome and total chromosome length were recorded to analyze the karyotypes and C bands of T. rubrofasciata. RESULTS The male T. rubrofasciata presented a chromosome number of 2n = 25, including 22 autosomes and 3 sex chromosomes. The relative length of chromosomes ranged from 3.59% to 12.76%, the arm ratio was 1.06 to 1.24, and the centromere index was 44.76% to 48.47%. All chromosomes were metacentric chromosomes and the karyotype formula was 2n = 22 metacentric + X1X2Y, and the C bands varied on different chromosomes. No heterochromatin was found in the X chromosome, and the overall staining appeared pale, while heterochromatin was detected in all regions of the Y chromosome, and the overall staining appeared dark. In addition, heterochromatin was present in both ends of the autosome. CONCLUSIONS The male T. rubrofasciata presents a chromosome number of 2n = 25 in China, and the karyotype formula is 2n = 22 metacentric + X1X2Y. C-banding shows dark staining of the Y chromosome, pale staining of the X chromosome, and dark staining of both ends of the autosome. Our data may provide insights into the investigation on the origin, evolution and gene mapping of T. rubrofasciata in China.
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Affiliation(s)
- M X Wang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); NHC Key Laboratory of Parasite and Vector Biology; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Shanghai 200025, China
| | - Q Liu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); NHC Key Laboratory of Parasite and Vector Biology; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Shanghai 200025, China
| | - Y Zhang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); NHC Key Laboratory of Parasite and Vector Biology; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Shanghai 200025, China
| | - D Zhu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); NHC Key Laboratory of Parasite and Vector Biology; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Shanghai 200025, China
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Wang MX, Yang YB, Wang Y, Zhou F, Li M, Zhang B. [Correlation analysis between decreased cerebral perfusion measured from arterial spin labeling and cerebrovascular events in patients with bilateral moyamoya angiography]. Zhonghua Yi Xue Za Zhi 2021; 101:1778-1783. [PMID: 34167277 DOI: 10.3760/cma.j.cn112137-20201202-03252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the correlation between decreased cerebral perfusion measured from arterial spin labeling and cerebrovascular events in patients with bilateral moyamoya angiography (MMA). Methods: Twenty-seven consecutive cases with bilateral MMA, who were admitted to the neurosurgery department of Nanjing Drum Tower Hospital from April to November 2020, were included in this retrospective study. Among them, 10 were males and 17 were females, aged 35-66 (55±9) years. These patients all presented with unilateral cerebral hemisphere cerebral infarction or cerebral hemorrhage. The Wilcoxon paired signed-rank test was used to qualitatively analyze the differences in the Arterial Transit Artifact (ATA) of the bilateral cerebral hemispheres. The mean gray value, the kurtosis and skewness of gray distribution curve of bilateral cerebral hemispheres on cerebral blood flow (CBF) images with post labeling delay (PLD) of 1.5 s and 2.5 s were quantitative calculated. The relationship between ASL and cerebrovascular event was determined using binary logistics regression analysis. Results: No significant difference was observed in ATA between bilateral hemispheres on CBF images with PLDs of 1.5 s and 2.5 s (P>0.05). On the CBF images with a PLD of 1.5 s, the mean gray value of the cerebral hemisphere on the lesion side (17.50±5.88) was markly lower than that on the non-lesion side (20.80±5.51) (P<0.001), the kurtosis and skewness of gray distribution were significantly different between bilateral cerebral hemispheres (P<0.05);On the CBF images with a PLD of 2.5 s, the mean gray value and the skewness of the gray distribution on the lesion side of the cerebral hemisphere were statistically different from those on the non-lesion side (P<0.05), while the difference in kurtosis was not statistically significant between bilateral cerebral hemispheres (P>0.05). Multivariate regression analysis showed that the reduction of gray value on the side of the lesion was independently associated to the occurrence of the cerebrovascular events (ORPLD1.5=0.192, 95%CI:0.047-0.783;ORPLD2.5=0.175, 95%CI:0.050-0.615). Conclusion: The decreased perfusion detected by ASL is independently associated with cerebrovascular events in patients with MMA.
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Affiliation(s)
- M X Wang
- Department of Radiology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Y B Yang
- Department of Neurosurgery, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Y Wang
- Department of Neurosurgery, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - F Zhou
- Department of Radiology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - M Li
- Department of Radiology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - B Zhang
- Department of Radiology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
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11
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Xu QQ, Wang WL, Zhang Y, Wang MX, Dong ZC. [A cross-sectional study on psychological needs of family members of critically ill inpatients in semi-closed wards and analysis of influence factors]. Zhonghua Shao Shang Za Zhi 2021; 37:475-484. [PMID: 34044528 DOI: 10.3760/cma.j.cn501120-20200314-00160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze and discuss the psychological needs of family members of critically ill burn inpatients in semi-closed wards and their related influence factors. Methods: A cross-sectional survey was conducted among the 82 burn patients, who met the inclusion criteria and were admitted to the Department of Burns and Plastic Surgery of Ruijin Hospital of Shanghai Jiao Tong University School of Medicine from October 2018 to April 2019, and their family members. A general condition questionnaire of 15 indexes was applied to investigate the general data of burn patients and their family members including cause of burn, gender, age, total burn area, burn depth, burn severity, burn site, and type of medical insurance of patients, kinship with the patients, gender, age, experience of accompanying in intensive care isolation wards, occupation, education level, and monthly income of their family members. The Critical Care Family Needs Inventory (CCFNI) was used to assess each item, each factor, and total scores of the family members of patients including 5 factors and 45 items such as support scale (SS), comfort scale (CS), information scale (IS), proximity scale (PS), assurance scale (AS). CCFNI was used to assess the total scores of patients and their family members after classification according to the general data, the data were statistically analyzed with one-way analysis of variance or independent sample t test. Indicators with statistical significance in the above analysis were selected for multiple linear regression analysis to screen the independent influence factors of psychological needs of patients' family members. CCFNI was used to assess each dimension scores of patients and their family members after classification according to the aforementioned selected independent influence factors including age and burn area of patients, gender, educational level, and experience of accompanying in intensive care isolation wards of their family members, and the data were statistically analyzed with one-way analysis of variance or independent sample t test. Results: A total of 82 questionnaires were sent out in this study, and 80 were effectively received, with s a recovery rate of 97.6%. In 80 patients, there were 45 males and 35 females; 35 cases (43.75%) were ≤14 years; most of the patients had flame and thermal burns; 33 patients (41.25%), 21 patients (26.25%), and 26 patients (32.50%) had moderate, severe, and extremely severe burns, respectively; and only 3 patients (3.75%) had no health insurance. In 80 family members of patients, 34 (42.50%) were males and 46 (57.50%) were females; 62.50% in the family members of patients were concentrated between 18 and 45 years old; and 12 family members of patients had experience of accompanying in intensive care isolation wards, accounting for 15.00%. The total CCFNI score of the family members was (141±14) points, and the scores of AS, PS, IS, CS, and SS were (3.77±0.23), (3.43±0.37), (3.53±0.34), (2.50±0.59), and (2.69±0.45) points, respectively. The top five items of the psychological needs of family members of patients were concentrated in three factors (AS, PS, and IS), and the item "ensuring that patients receive the best treatment" ranked the first, with a score of (3.99±0.11) points. There were significant differences on the CCFNI total scores of patients with different age, total burns area, and severity of burns and of their family members with different gender, education level, and whether or not experience of accompanying in intensive care isolation unit (F=4.378, 5.481, 5.913, t=4.027, 14.339, 7.265, P<0.05 or P<0.01). Multiple linear regression analysis showed that the patient's age (≤14, 15-45 years) and total burn area (11%-30%, 31%-49%, ≥50% TBSA) and the patient's family members' gender, educational level, experience of accompanying in intensive care isolation unit could affect the psychological needs of family members of patients (t=3.133, 2.260, 2.297, 2.433, 3.015, 2.200, 2.102, 2.463, P<0.05 or P<0.01). There was statistically significant difference in AS score of the patients' family members with different age (F=4.390, P<0.05). There were significant differences in both IS and AS scores of the patients' family members of patients with different burn area (F=5.042, 3.131, P<0.05 or P<0.01). The AS score of the patients' family members with experience of accompanying in intensive care isolation unit was significantly lower than those without (t=-1.040, P<0.05). The SS score of the patients' family members with college education or above was significantly higher than those with high school (technical secondary school) or below (t=0.657, P<0.05). The IS score of the patients' family members with college education or above was significantly lower than those with high school (technical secondary school) or below (t=-1.438, P<0.05). The SS score of male family members of patients was significantly lower than those of female patients (t=4.149, P<0.05). Conclusions: The family members of burn patients in semi-closed ward have the most urgent need to ensure the patients receive the best treatment. Patients' age, total burn area, and their family members' gender, education level, experience of accompanying in intensive care isolation unit are the main factors affecting the psychological needs of family members of patients.
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Affiliation(s)
- Q Q Xu
- Department of Burns and Plastic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - W L Wang
- Department of Burns and Plastic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Y Zhang
- Department of Burns and Plastic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - M X Wang
- Department of Social Work, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Z C Dong
- Department of Social Work, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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Qin ZX, Su JJ, He XW, Zhu Q, Cui YY, Zhang JL, Wang MX, Gao TT, Tang W, Hu Y, Liu YS, Qiao Y, Liu JR, Li JQ, Du XX. Altered resting-state functional connectivity between subregions in the thalamus and cortex in migraine without aura. Eur J Neurol 2020; 27:2233-2241. [PMID: 32562320 DOI: 10.1111/ene.14411] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 06/14/2020] [Indexed: 01/13/2023]
Abstract
BACKGROUND AND PURPOSE Migraine is a complex and disabling neurological disorder, the exact neurological mechanisms of which remain unclear. The thalamus is considered to be the hub of the central processing and integration of nociceptive information, as well as the modulation of these processes. METHODS A total of 48 migraineurs without aura (MWoAs) during the interictal phase and 48 age- and sex-matched healthy controls underwent resting-state functional magnetic resonance imaging scans. We utilized masked independent component analysis and seed-based functional connectivity (FC) to investigate whether MWoAs exhibited abnormal FC between subregions in the thalamus and the cortex regions. RESULTS The MWoAs showed significantly weaker FC between the anterior dorsal thalamic nucleus and left precuneus. Additionally, MWoAs exhibited significantly reduced FC between the ventral posterior nucleus (VPN) and left precuneus, right inferior parietal lobule (R-IPL) and right middle frontal gyrus. Furthermore, the FC Z-scores between the VPN and R-IPL were negatively correlated with pain intensity in MWoAs. The disease duration of patients was negatively correlated with the FC Z-scores between the VPN and R-IPL. CONCLUSION These altered thalamocortical connectivity patterns may contribute to multisensory integration abnormalities, deficits in pain attention, cognitive evaluation and pain modulation. Pain sensitivity and disease duration are closely tied to abnormal FC between the VPN and R-IPL. Remarkably, recurrent headache attacks might contribute to this maladaptive functional plasticity closely related to pain intensity.
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Affiliation(s)
- Z X Qin
- Shanghai Key Laboratory of Magnetic Resonance and Department of Physics, School of Physics and Electronic Science, East China Normal University, Shanghai
| | - J J Su
- Department of Neurology and Jiuyuan Municipal Stroke Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - X W He
- Department of Neurology and Jiuyuan Municipal Stroke Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai.,Clinical Research Center, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - Q Zhu
- Shanghai Key Laboratory of Magnetic Resonance and Department of Physics, School of Physics and Electronic Science, East China Normal University, Shanghai
| | - Y Y Cui
- Shanghai Key Laboratory of Magnetic Resonance and Department of Physics, School of Physics and Electronic Science, East China Normal University, Shanghai
| | - J L Zhang
- Clinical Science, Philips Healthcare, Shanghai
| | - M X Wang
- College of Medical Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - T T Gao
- Shanghai Key Laboratory of Magnetic Resonance and Department of Physics, School of Physics and Electronic Science, East China Normal University, Shanghai
| | - W Tang
- Shanghai Key Laboratory of Magnetic Resonance and Department of Physics, School of Physics and Electronic Science, East China Normal University, Shanghai
| | - Y Hu
- Department of Neurology and Jiuyuan Municipal Stroke Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai.,Clinical Research Center, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - Y S Liu
- Department of Neurology and Jiuyuan Municipal Stroke Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - Y Qiao
- Department of Neurology and Jiuyuan Municipal Stroke Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai.,Clinical Research Center, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - J R Liu
- Department of Neurology and Jiuyuan Municipal Stroke Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai.,Clinical Research Center, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - J Q Li
- Shanghai Key Laboratory of Magnetic Resonance and Department of Physics, School of Physics and Electronic Science, East China Normal University, Shanghai
| | - X X Du
- Shanghai Key Laboratory of Magnetic Resonance and Department of Physics, School of Physics and Electronic Science, East China Normal University, Shanghai
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13
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Gao SY, Wang MW, Tang H, Zhang S, Qi CB, Wang MX, Chang Q, Yue JQ. [Application of intraoperative rapid immunohistochemistry in diagnosis of difficult cases]. Zhonghua Bing Li Xue Za Zhi 2020; 49:265-268. [PMID: 32187900 DOI: 10.3760/cma.j.issn.0529-5807.2020.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- S Y Gao
- Department of Pathology, Hubei Cancer Hospital, Wuhan 430079, China
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14
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Zhang Y, Zhang R, Meng HY, Wang MX, Du SZ. [Efficacy and safety of intranasal dexmedetomidine premedication for children undergoing CT or magnetic resonance imaging: a systematic review and meta-analysis]. Zhonghua Er Ke Za Zhi 2020; 58:314-318. [PMID: 32234139 DOI: 10.3760/cma.j.cn112140-20191224-00830] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To review the efficacy and safety in children receiving intranasal dexmedetomidine premedication before CT or magnetic resonance imaging (MRI). Methods: A literature search (search terms included "dexmedetomidine" "intranasal drug administration" "children" "CT" and "MRI") was conducted using Embase, PubMed, the Cochrane Library, ClinicalTrials.gov, CNKI, Wanfang, VIP database and Chinese Biomedical Literature Database (searched from inception to March 18, 2019). Randomized controlled trials of children receiving intranasal dexmedetomidine versus chloral hydrate, ketamine or midazolam premedication before CT or MRI were included. The Cochrane Reviewers' Handbook 5.1.0 was used to evaluate the quality of the enrolled studies. The primary outcomes were sedation success rate and sedation induction time. The secondary outcomes included respiratory depression, heart rate, systolic blood pressure and blood oxygen saturation. Statistical analyses were performed using the Review Manager 5.3 software. Results: A total of 1 167 participants in 9 randomized controlled trials were included. The results of meta-analysis showed that intranasal dexmedetomidine premedication provided higher sedation success rate than oral chloral hydrate (relative risk (RR) =1.13, 95% confidence interval (CI) 1.02 to 1.26, P=0.020). There was no significant difference between intranasal dexmedetomidine and midazolam. In addition, the sedation induction time of intranasal dexmedetomidine group was significantly shorter than that in the oral chloral hydrate group (weighted mean difference -1.49, 95% CI -2.87 to -0.11; P=0.030), but showed no significant difference as compared with that of intranasal ketamine or midazolam. The patients treated with intranasal dexmedetomidine also showed significantly lower heart rate (RR=4.78, 95%CI 1.85-12.35, P=0.001) and less respiratory depression (RR=0.28, 95%CI 0.09-0.87, P=0.030). There were no intergroup differences in systolic blood pressure and blood oxygen saturation. Conclusions: Intranasal dexmedetomidine provided more effective sedation and higher safety in children undergoing CT or MRI. As this meta-analysis is limited by the small sample size, further high-quality randomized controlled trials are needed.
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Affiliation(s)
- Y Zhang
- Department of Pharmacy, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - R Zhang
- Department of Pharmacy, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - H Y Meng
- Department of Pharmacy, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - M X Wang
- Department of Pharmacy, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - S Z Du
- Department of Pharmacy, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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15
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Lang J, Xu FJ, Ge WK, Liu BY, Zhang N, Sun YH, Wang JM, Wang MX, Xie N, Fang XZ, Kang XN, Qin ZX, Yang XL, Wang XQ, Shen B. Greatly enhanced performance of AlGaN-based deep ultraviolet light emitting diodes by introducing a polarization modulated electron blocking layer. Opt Express 2019; 27:A1458-A1466. [PMID: 31684498 DOI: 10.1364/oe.27.0a1458] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 08/03/2019] [Indexed: 06/10/2023]
Abstract
Carrier transport in AlGaN-based deep ultraviolet (DUV) light emitting diodes (LEDs) with the wavelength of 273 nm has been investigated by introducing polarization modulated electron blocking layer (EBL) that adopts an Al composition and thickness graded multiple quantum barriers (MQB) structure. The experimental result shows that the maximum light output power and external quantum efficiency for the proposed structure at the current of 250 mA are 9.6 mW and 1.03% respectively, severally increasing by 405% and 249% compared to traditional one, meanwhile, the efficiency droop at 250 mA is also dramatically reduced from 42.2% to 16.6%. Further simulation analysis indicates that this graded MQB-EBL enhances the potential barrier height for electrons and meanwhile reduces that for holes, hence effectively suppresses the electron leakage, and at the same time significantly improves the hole injection efficiency. As a result, the whole performance of the LED with the proposed MQB-EBL is dramatically improved.
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16
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Wang MX, Wong CH, Kim JE. Impact of whole egg intake on blood pressure, lipids and lipoproteins in middle-aged and older population: A systematic review and meta-analysis of randomized controlled trials. Nutr Metab Cardiovasc Dis 2019; 29:653-664. [PMID: 31076323 DOI: 10.1016/j.numecd.2019.04.004] [Citation(s) in RCA: 20] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 04/10/2019] [Accepted: 04/16/2019] [Indexed: 01/14/2023]
Abstract
BACKGROUND AND AIM Effects of whole egg consumption on cardiovascular diseases (CVD) risk in the middle-aged and older population remain unclear due to inconsistent findings from observational and randomized controlled trials (RCTs). This meta-analysis aimed to assess the impacts of whole egg and egg category (whole eggs versus egg substitutes) intake quantity on CVD risk factors from systematically searched RCTs. Egg substitutes were hypothesized to have minimal effects of the blood lipid and lipoprotein profile as they are void of dietary cholesterol. METHODS AND RESULTS As many as 434 studies identified from PubMed, Cochrane Library, CINAHL and Medline (Ovid) databases were screened and data were extracted from 8 selected RCTs. Quality of the selected studies were assessed and the overall effect sizes of weighted mean differences (WMD) were calculated using a random effects model. Non-differential effects in blood pressures, lipids and lipoproteins were observed when >4 whole eggs/week compared to ≤4 whole eggs/week were consumed. Intake of >4 whole eggs/week compared to equivalent amounts of egg substitutes caused greater elevations in blood total cholesterol (WMD: 0.198 mmol/L; 95% CIs: 0.056, 0.339), HDL cholesterol (WMD: 0.068 mmol/L; 95% CIs: 0.006, 0.130) and LDL cholesterol (WMD: 0.171 mmol/L; 95% CIs: 0.028, 0.315) but did not differentially affect triglycerides concentration. CONCLUSION Overall, the results support the notion that quantity of whole egg intake does not affect CVD risk factors and consuming egg substitutes may also be beneficial compared to whole eggs on lowering CVD risk in the middle-aged and older population.
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Affiliation(s)
- M X Wang
- Food Science and Technology Program, Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore; Centre for Infectious Disease Epidemiology and Research, Saw Swee Hock School of Public Health, National University of Singapore, Tahir Foundation Building, 12 Science Drive 2, 117549, Singapore.
| | - C H Wong
- Food Science and Technology Program, Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore.
| | - J E Kim
- Food Science and Technology Program, Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore.
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Li Y, Wang MX, Zhou J, Zhou HF. [Anxiety and depression in patients with idiopathic tinnitus and its relative factors analysis]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 33:416-421. [PMID: 31163548 DOI: 10.13201/j.issn.1001-1781.2019.05.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Indexed: 11/12/2022]
Abstract
Objective: To investigate the psychological status of anxiety and depression in patients with idiopathic tinnitus, and to analyze its relative factors. Method: One hundred and sixty seven patients with idiopathic tinnitus were assessed by Self-Rating Anxiety Scale(SAS),Self-Rating Depression Scale(SDS) and general condition questionnaire. Patients with anxiety or depression were reassessed after corresponding treatment for 6 weeks. Result: Fifty-five patients(32.93%) were in anxiety state and 43 patients(25.75%) were in depression state. Twenty-seven patients(16.17%) were in both anxiety and depression state. The multivariate logistic regression analysis found that the incidence of anxiety and depression in patients with idiopathic tinnitus were related to sleep disorders, course of disease and THI score(P<0.05). Treatment scores(SAS and SDS) were statistically significantly different between pre- and post-treatment(P<0.01). Conclusion: The anxiety and depression state is highly prevalent in idiopathic tinnitus patients and is related to course of disease, severity of tinnitus and sleep disorders. In clinical practice, we should pay close attention to the psychological status of patients with idiopathic tinnitus, and take timely psychological intervention.
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Affiliation(s)
- Y Li
- Department of Otolaryngology, General Hospital of Tianjin Medical University, Tianjin, 300052, China
| | - M X Wang
- Department of Otolaryngology, General Hospital of Tianjin Medical University, Tianjin, 300052, China
| | - J Zhou
- Department of Otolaryngology, General Hospital of Tianjin Medical University, Tianjin, 300052, China
| | - H F Zhou
- Department of Otolaryngology, General Hospital of Tianjin Medical University, Tianjin, 300052, China
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Ying TP, Wang MX, Wu XX, Zhao ZY, Zhang ZZ, Song BQ, Li YC, Lei B, Li Q, Yu Y, Cheng EJ, An ZH, Zhang Y, Jia XY, Yang W, Chen XH, Li SY. Discrete Superconducting Phases in FeSe-Derived Superconductors. Phys Rev Lett 2018; 121:207003. [PMID: 30500229 DOI: 10.1103/physrevlett.121.207003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Indexed: 06/09/2023]
Abstract
A general feature of unconventional superconductors is the existence of a superconducting dome in the phase diagram. Here we report a series of discrete superconducting phases in the simplest iron-based superconductor, FeSe thin flakes, by continuously tuning the carrier concentration through the intercalation of Li and Na ions with a solid ionic gating technique. Such discrete superconducting phases are robust against the substitution of 20% S for Se, but they are vulnerable to the substitution of 2% Cu for Fe, highlighting the importance of the iron site being intact. The superconducting phase diagram for FeSe derivatives is given, which is distinct from that of other unconventional superconductors.
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Affiliation(s)
- T P Ying
- State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
| | - M X Wang
- State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
| | - X X Wu
- Institut für Theoretische Physik und Astrophysik, Julius-Maximilians-Universität Würzburg, 97074 Würzburg, Germany
| | - Z Y Zhao
- State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
| | - Z Z Zhang
- Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
| | - B Q Song
- State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
| | - Y C Li
- State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
| | - B Lei
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, and Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Q Li
- State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
| | - Y Yu
- State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
| | - E J Cheng
- State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
| | - Z H An
- State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
| | - Y Zhang
- State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - X Y Jia
- State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
| | - W Yang
- Tianmu Lake Institute of Advanced Energy Storage Technologies, Liyang, Jiangsu 213300, China
| | - X H Chen
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, and Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - S Y Li
- State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
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Wang MX, Su XY. [Urine cytological diagnosis of embryonic rhabdomyosarcoma: report of a case]. Zhonghua Bing Li Xue Za Zhi 2018; 47:874-875. [PMID: 30423618 DOI: 10.3760/cma.j.issn.0529-5807.2018.11.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
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Chen QR, Yang F, Feng X, Wang MX, Jin S, Wang MW, Wu D, Zhang YGL, Wu YM, Wang HB, Chen QB. [Improving the methods for processing specimens derived from endobronchial ultrasound-guided transbronchial needle aspiration so as to increase the pathological diagnosis accuracy]. Zhonghua Bing Li Xue Za Zhi 2018; 47:635-637. [PMID: 30107673 DOI: 10.3760/cma.j.issn.0529-5807.2018.08.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Li X, Wang X, Wu D, Chen ZB, Wang MX, Gao YX, Gong CX, Qin M. [Interleukin-1β and C-reactive protein level in plasma and gingival crevicular fluid in adolescents with diabetes mellitus]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:538-542. [PMID: 29930426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE Cytokines produced by various cells are strong local mediators of inflammation. Interleukin-1beta (IL-1β) and C-reactive protein (CRP) play essential roles in the development and progression of diabetes mellitus (DM). Thus periodontal diseases could be related to DM via the same mediators of inflammation. To evaluate plasma and gingival crevicular fluid (GCF) levels of IL-1β and CRP in adolescents with DM to further investigate whether DM has an impact on the levels of inflammation factors at an early stage, and to analyze the risk of developing periodontal diseases in adolescents with DM. METHODS A total of 121 adolescents aged from ten to sixteen years were enrolled, 41 adolescents diagnosed with diabetes mellitus were collected in the DM group, and 80 nondiabetic adolescents as the control group. The periodontal indices of each individual were recorded, including plaque index (PLI), modified bleeding index (mBI), probing depth (PD) and attachment loss (AL). GCF and intravenous blood samples were collected, and CRP and IL-1β levels were detected by enzyme-linked immunosorbent assay (ELISA). RESULTS (1) PLI of DM group and control group were 1.23±0.05 and 0.95±0.04 separately, with significant difference (P=0.001). DM group and control group had mBI of 0.80±0.08 and 0.51±0.06 separately, with significant difference (P=0.003). Attachment loss was found in none of the subjects. PDs of DM group and control group were (2.37±0.51) mm and (2.31±0.05) mm separately, and there was no significant difference. (2) CRP in GCF was only detectable in partial of the individuals, with a detectable rate of 22.9% (11/48) in total. The detectable rate of CRP in GCF was significantly higher in DM group (38.5%) than that in control group (4.5%, P=0.006). The plasma level of CRP in DM group [0.23 (0.15, 1.89) mg/L] was higher than that in control group [0.19 (0.12, 4.18) mg/L], but without significance (P=0.776). (3) The plasma levels of IL-1β in DM group and control group were (14.11±0.57) ng/L and (14.71±0.50) ng/L separately, but there was no significance (P=0.456). GCF levels of IL-1β in DM group and control group were (12.91±1.95) μg/L and (17.68±3.07) μg/L, without significant difference (P=0.185). CONCLUSION Periodontitis was not observed in adolescents with DM at an early stage. However, the rising levels of periodontal indices and CRP in GCF, might indicate that adolescents with DM have a higher risk of developing periodontal diseases in the future.
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Affiliation(s)
- X Li
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - X Wang
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - D Wu
- Department of Endocrinology, Genetics, and Metabolism, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - Z B Chen
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - M X Wang
- Department of Dentistry, Capital Institute of Pediatrics, Beijing 100020, China
| | - Y X Gao
- Department of Dentistry, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - C X Gong
- Department of Endocrinology, Genetics, and Metabolism, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - M Qin
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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Bian L, Geng CZ, Ouyang QC, Hu XC, Peng YY, Xiao JY, Wang MX, Yang N, Yuan J, Wang YM, Jiang ZF. [Study of bioequiavailability of paclitaxel for Injection (Albumin Bound) and abraxane and the efficacy of extension treatments in patients with metastatic breast cancer]. Zhonghua Yi Xue Za Zhi 2018; 98:1236-1241. [PMID: 29747311 DOI: 10.3760/cma.j.issn.0376-2491.2018.16.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the bioequiavailability of paclitaxel for injection (albumin bound) (PAB) and reference listed drug abraxane in the patients with metastatic breast cancer, and to investigate the safety and efficacy in the extension treatments of PAB. Methods: This study was random, two cycles, self-crossover control study in the bioequiavailability stage. PAB was the investigational drug T and Abraxane was the reference drug R. Patients were randomly assigned to two cycles therapy of either R→T or T→R(260 mg/m(2)/21d). Non-PD patients entered in the extension treatments of the investigational drug PAB(260 mg/m(2)/21d) until the disease progression or the intolerance toxicity. Results: From Mar 1, 2016 to May 24, 2016, we enrolled 40 patients. The blood concentration-time curve and the parameters of pharmacokinetics indicated the two drugs were the bioequivalent drug products in the initial two cycles crossover-therapy.The incidence of adverse drug reactions were 89.7% vs 97.4% in investigational drug vs reference drug and grade 3/4 toxicities were 20.5% vs 21.1%(P=1.000). Patients received a median of 7 treatment cycles(range 1-23) and a median of 260mg/m(2) actual drug dose (range 220-260 mg/m(2)). Seven patients (17.5%) had dose reductions because of toxicities (260 mg/m(2) reduce to 220 mg/m(2)). Twenty-two patients (55%) discontinued treatment prematurely because of toxicity.Overall response rates (ORR) were 40% (95% CI, 24.8%-55.2%). For patients who received PAB as first-line vs non-first-line therapy, the ORR were 43.8% vs 25%. For patients who taxane-naïve vs taxane-pretreated, the ORR were 45.5% vs 37.9%. Median PFS was 49 weeks(95% CI, 30weeks-NA). Conclusion: The paclitaxel for injection (albumin bound) (PAB) and reference listed drug abraxane are the bioequivalent drug products.The toxicity and efficacy of the PAB are similar with abraxane.The more therapy chances for Chinese patients will come by the research and development of domestic drugs.
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Affiliation(s)
- L Bian
- Department of Breast Cancer, Chinese PLA 307 Hospital, Beijing 100071, China
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Zhao K, Xu Y, Wang MX, Zhou HF. [Anxiety and depression in patients with sudden sensorineural hearing loss and its influencing factors]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:1735-1739. [PMID: 29798187 DOI: 10.13201/j.issn.1001-1781.2017.22.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Indexed: 06/08/2023]
Abstract
Objective:To evaluate the psychological status of anxiety and depression in patients with sudden sensorineural hearing loss, and to analyze the factors that affect the occurrence of anxiety and depression. Method:A total of 198 patients with moderate and severe sudden sensorineural hearing loss were enrolled. The patients were tested by general condition questionnaire and hospital anxiety and depression scale (HADS). Patients who developed anxiety and depression were tested again using the HADS at 1 week after completion of the treatment. Result:The incidence of anxiety was 27.27% in patients with moderate and severe sudden sensorineural hearing loss, and the incidence of depression was 25.25%. The scores of anxiety and depression were statistically significant (P<0.05). The multivariate logistic regression analysis showed that the status of anxiety and depression was accompanied by symptoms and other diseases (P<0.05). There was a significant difference between the effective group, the significant efficacy group and the cured group (P<0.05). The difference between the scores before and after treatment was compared. Differences in the ineffective group compared with the other three groups, and the cured group compared with the other three groups of anxiety, depression were statistically significant. Conclusion:The problem of anxiety and depression in patients with moderate and severe sudden sensorineural hearing loss is relatively prominent, and the symptoms of anxiety and depression are obviously affected by the symptoms and other diseases. After treatment, anxiety and depression status changes significantly. In clinical practice, anxiety and depression and its influencing factors should be taken into account for the treatment of the patients with severe sudden sensorineural hearing loss.
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Affiliation(s)
- K Zhao
- Department of Otolaryngology, General Hospital of Tianjin Medical University, Tianjin, 300052, China
| | - Y Xu
- Department of Otolaryngology, General Hospital of Tianjin Medical University, Tianjin, 300052, China
| | - M X Wang
- Department of Otolaryngology, General Hospital of Tianjin Medical University, Tianjin, 300052, China
| | - H F Zhou
- Department of Otolaryngology, General Hospital of Tianjin Medical University, Tianjin, 300052, China
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24
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Wang MX, Su J, Zhang J, Xu Y, Guo Y, Zhou HF. [The features of c/oVEMP in patient with unilateral Meniere's disease]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:1504-1507. [PMID: 29798104 DOI: 10.13201/j.issn.1001-1781.2017.19.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Indexed: 11/12/2022]
Abstract
Objective:To evaluate the difference in c/oVEMPs between patients with MD and normal controls.Method:Twenty-two patients with unilateral MD and 21 healthy subjects (as normal controls) were prospectively examined with c/oVEMPs. The results were compared between these two groups. MD group were divided into two groups according to the pure tone average threshold: group1 PTA≤40 dBnHL,group2 PTA>40 dBnHL,and then compared their results. A commercially available software package SPSS 19.0 was used for statistical analysis.Result:The latency and amplitude of cVEMP and oVEMP in the affected side and contralateral side of the MD group were no significant difference. Compared with normal controls,the latency of P1 and N1 was prolonged,the amplitude was decreased in the MD group's cVEMP. The amplitude was decreased in the MD group's oVEMP,but the latency was not prolonged. Group 2's extraction rate of cVEMP was significantly lower than group 1.Conclusion:An increased occurrence of abnormal c/oVEMP recordings appeared in MD patients,possibly as a result of hydrops of the otolith. The saccular dysfunction may be more common than utricular dysfunction. Furthermore,that otolith damage is gradually increasing with the aggravation of cochlear injury in MD.
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Affiliation(s)
- M X Wang
- Department of Otorhinolaryngology Head and Neck Surgery,Tianjin Medical University General Hospital,Tianjin,300052,China
| | - J Su
- Department of Otorhinolaryngology Head and Neck Surgery,Tianjin Medical University General Hospital,Tianjin,300052,China
| | - J Zhang
- Department of Otorhinolaryngology Head and Neck Surgery,Tianjin Medical University General Hospital,Tianjin,300052,China
| | - Y Xu
- Department of Otorhinolaryngology Head and Neck Surgery,Tianjin Medical University General Hospital,Tianjin,300052,China
| | - Y Guo
- Department of Otorhinolaryngology Head and Neck Surgery,Tianjin Medical University General Hospital,Tianjin,300052,China
| | - H F Zhou
- Department of Otorhinolaryngology Head and Neck Surgery,Tianjin Medical University General Hospital,Tianjin,300052,China
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Liang W, Ding F, Wang MX, Liu BL, Sun M. Molecular and pathological evaluation of cryopreserved colorectal cancerous tissues: Effects of freezing method and cryoprotection. Cryo Letters 2017; 38:321-329. [PMID: 29734434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
BACKGROUND Snap freezing and RNAlater stabilization are methods that were wildly used in biospecimen depositories to preserve cancer tissues. Both methods have its own limitations. An ideal method for preservation of diseased tissues should permit the broader uses of stored tissue samples, including not just for molecular diagnostic analysis, histopathological evaluation, but also for the recovery of functional live cells and tissues as well as the regeneration of patient-derived xenograft (PDX) models for the drug screening study. MATERIALS AND METHODS This study investigated molecular and pathological evaluation of cryopreserved colorectal cancer tissues, with an emphasis on effects of freezing method and cryoprotection. Global gene expression analysis with microarrays and histological examination of tissue samples were performed to compare tissue specimens after snap freezing, cryoprotectant permeation and subsequent cryopreservation. RESULTS Compared with the fresh tissue samples (immediately stabilized in RNAlater after collection), samples preserved by snap freezing exhibited the largest number of differentially-expressed genes. Some genes relate to neuron, drug addiction and drug binding, but the rest of differentially-expressed genes were functionally dispersive. Cryoprotectant permeation into tissue samples and subsequent cryopreservation via a rate-controlled freezing resulted in much less differentially expressed genes. Histological structures of tissue specimens were both well preserved by snap freezing and cryoproservation. CONCLUSION Snap freezing may not be as reliable as commonly considered. The pilot study demonstrates the feasibility of using cryopreservation to retain viable diseased tissues for multiple applications.
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Affiliation(s)
- W Liang
- Institute of Biothermal Science, School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - F Ding
- Institute of Biothermal Science, School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - M X Wang
- Institute of Biothermal Science, School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - B L Liu
- Institute of Biothermal Science, School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, China.
| | - M Sun
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
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Wang MX, Yuan MQ, Fang Y. [Research on spatiotemporal spread of avian influenza A(H7N9) virus based on discrete geographic information]. Zhonghua Liu Xing Bing Xue Za Zhi 2016; 37:1491-1496. [PMID: 28057141 DOI: 10.3760/cma.j.issn.0254-6450.2016.11.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Objective: To establish a dynamic spatiotemporal spread modes of influenza A (H7N9) virus by using discrete geographic information and explore the spatiotemporal transmission of the virus. Methods: The gene sequences of H7N9 virus isolated from human in China, which were available from Global Initiative on Sharing Avian Influenza Data (GISAID), were used in alignment by using software BioEdit 7.0. Spatiotemporal spread model of H7N9 virus was established in a Bayesian statistical framework by using software BEAST 1.8.2. The symmetric substitution model and Bayesian stochastic search variable selection (BSSVS) were used to infer and verify the historical transmission route of H7N9 virus. Finally the spatiotemporal transmission route was presented by Google Earth software. Results: The transmission of avian influenza A (H7N9) virus originated in Shanghai and Hangzhou, and can be dated back to October 2012. In March and April 2013, it began to spread to the neighboring provinces. The transmission speed up in August and September and affected more than ten geographic positions within 3 months. Conclusion: Based on gene sequences and spatial geographic information, the transmission route of H7N9 virus was traced, which would support the avian influenza prevention and control as well as avian influenza virus tracing.
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Affiliation(s)
- M X Wang
- School of Public Health, Xiamen University, Xiamen 361002, China
| | - M Q Yuan
- School of Public Health, Xiamen University, Xiamen 361002, China; Key Laboratory of Health Technology Assessment of Universities in Fujian Province, Xiamen 361002, China
| | - Y Fang
- School of Public Health, Xiamen University, Xiamen 361002, China; Key Laboratory of Health Technology Assessment of Universities in Fujian Province, Xiamen 361002, China
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Wang L, Zhou HF, Wang MX, Zhang J, Su J, Guo Y. [Comparison of anxiety and depression state among patients with different type of benign paroxysmal positional vertigo]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1710-1713. [PMID: 29871180 DOI: 10.13201/j.issn.1001-1781.2016.21.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Indexed: 06/08/2023]
Abstract
Objective:To investigate and analyze the state of anxiety and depression among patients with different type of benign paroxysmal positional vertigo(BPPV).Method:Patients with four types of BPPV were enrolled in our study,which named as posterior semicircular canals BPPV(PC-BPPV),anterior semicircular canals BPPV(AC-BPPV), horizontal semicircular canals BPPV(HC-BPPV), multiple canals BPPV(MC-BPPV).Thorough otological and neuro-otological examinations were performed on all cases,and their states of anxiety and depression were assessed by hospital anxiety and depression scale(HADS).Result:The incidence of anxiety and depression of all cases divided into four types BPPV (PC-BPP, AC-BPPV, HC-BPPV, MC-BPPV) were 36.45%, 22.78%, 28.57%, 63.16% respectively in our study .The differences among the four groups were statistically significant(P< 0.05).That were higher in these cases with PC-BPPV or MC-BPPV than those with AC-BPPV or HC-BPPV.The HADS aggregate scores of the pre-repositioning were statistically significant(P< 0.05). And the patients with PC-BPPV or MC-BPPV were higher than the other two groups.The HADS aggregate scores of the post-repositioning were statistically significant(P<0.05). And the cases with PC-BPPV or MC-BPPV were higher than the other two groups. The post-repositioning scores were compared with the pre-repositioning scores, and the difference was significant(P< 0.05).Conclusion:Among all cases with the four different types of BPPV,anxiety and depression psychological mood is more common in patients with PC-BPPV or MC-BPPV.Mood disorders affect the reset recovery after treatment,and reduce the therapeutic effect.We should pay more attention to psychological state of the patients with BPPV during treatment.And early psychological intervention can improve treatment effect.
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Affiliation(s)
- L Wang
- Department of Otorhinolaryngology,General Hospital of Tianjin Medical University, Tianjin, 300052, China
| | - H F Zhou
- Department of Otorhinolaryngology,General Hospital of Tianjin Medical University, Tianjin, 300052, China
| | - M X Wang
- Department of Otorhinolaryngology,General Hospital of Tianjin Medical University, Tianjin, 300052, China
| | - J Zhang
- Department of Otorhinolaryngology,General Hospital of Tianjin Medical University, Tianjin, 300052, China
| | - J Su
- Department of Otorhinolaryngology,General Hospital of Tianjin Medical University, Tianjin, 300052, China
| | - Y Guo
- Department of Otorhinolaryngology,General Hospital of Tianjin Medical University, Tianjin, 300052, China
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Zhang J, Su J, Wang MX, Zhou HF. [Study on bimodal stimulation for aural rehabilitationdevelopmentin infants with a unilateral cochlear implant]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1774-1777. [PMID: 29798480 DOI: 10.13201/j.issn.1001-1781.2016.22.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Indexed: 11/12/2022]
Abstract
Objective:To evaluated the aural rehabilitation development of the bimodal stimulation in deaf infants with a unilateral cochlear implant. Method:The 36 infants, suffering from severe-to-profound bilateral sensorineural hearing loss with residual hearing on at least one side, assigned into two groups randomly:18 wore only the cochlear implant(unilateral A group),while the other 18 used the CI and a contralateral hearing aid at the same time(bimodal group).The aural rehabilitation development was evaluated by sound field test and speech rehabilitation tests(including vowels, consonants, tones, monosyllables, disyllables, tri-syllables and selected hearing) after rehabilitation lasting 3 month(T1),6 month(T2)and 12 month(T3)respectively. Result:At time T1,free-field hearing threshold of 500 Hz of unilateral A group was statistically higher than bimodal group. Free-field hearing thresholds of 500 Hz and 1 000 Hz of unilateral A group were statistically higher than bimodal group attime T2(P<0.05).At time T1, vowels, consonants, tones ,monosyllables, and disyllables rehabilitation scores of unilateral A group were statistically higher than bimodal group(P<0.05).At time T2,there were no statistically significant differences between two groups(P>0.05).However,consonants, tones,disyllables, tri-syllables and selected hearing rehabilitation scores of bimodal group were statistically higher than unilateral group(P<0.05). Conclusion:The cochlear implant infants with bimodal stimulation have better aural rehabilitation development with the process of aural rehabilitation gradually.Therefore, it is essential to make full use of the advantages of binaural hearing and to choose the appropriate aural rehabilitation mode for every deaf infant.
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Affiliation(s)
- J Zhang
- Department of Otorhinolaryngology,the General Hospital of Tianjin Medical University,Tianjin,300052,China
| | - J Su
- Department of Otorhinolaryngology,the General Hospital of Tianjin Medical University,Tianjin,300052,China
| | - M X Wang
- Department of Otorhinolaryngology,the General Hospital of Tianjin Medical University,Tianjin,300052,China
| | - H F Zhou
- Department of Otorhinolaryngology,the General Hospital of Tianjin Medical University,Tianjin,300052,China
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Wang MX, Ma X, Li XD, Wang YW. [A case report of subglottic cartilage tumor]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 51:705-706. [PMID: 27666713 DOI: 10.3760/cma.j.issn.1673-0860.2016.09.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- M X Wang
- Department of Otorhinolaryngology, Lanzhou General Hospital of Lanzhou Military Area Command, People's Liberation Army of China, Lanzhou 730050, China
| | - X Ma
- Department of Otorhinolaryngology, Lanzhou General Hospital of Lanzhou Military Area Command, People's Liberation Army of China, Lanzhou 730050, China
| | - X D Li
- Fourth Military Medical University, Xi'an 710032, China
| | - Y W Wang
- Fourth Military Medical University, Xi'an 710032, China
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Wang Q, Duan F, Liu P, Wang PF, Wang MX. Expression of anti-SRP19 antibody in muscle tissues from patients with autoimmune necrotizing myopathy. Genet Mol Res 2016; 15:gmr8307. [PMID: 27525944 DOI: 10.4238/gmr.15038307] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This study aimed to investigate the role of anti-SRP19 antibody in muscle tissues of patients with autoimmune necrotizing myopathy. Immunohistochemistry staining was used to determine the expression of anti-SRP19 antibodies in muscle tissues of autoimmune necrotizing myopathy patients. Results demonstrated that anti-SRP19 antibody was expressed in 71.4% (20/28) of muscle tissue specimens from patients with autoimmune necrotizing myopathy. Anti-SRP19 antibody expression was mainly localized in cytoplasm of necrotic muscle fibers surrounding the small blood vessels and interstitial cells. There were no significant differences in the age, course of disease, muscle, and creatine kinase levels between patients with positive or negative expression of anti-SRP19 antibodies. The expression levels of anti-SRP19, serum anti-nuclear antibodies, as well as anti-Ro-52, anti- SSA, anti-Sm, and anti-Jo-1 antibodies were not significantly different among groups. This study demonstrates that anti-SRP19 antibody is highly expressed in muscle tissues of patients with autoimmune necrotizing myopathy, and suggests that this protein may be involved in the origin and progression of the disease.
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Affiliation(s)
- Q Wang
- EmergencyDepartment, General Hospital of Chinese People's Armed Police Forces, Beijing, China
| | - F Duan
- Department of Neurology, Navy General Hospital, Beijing, China
| | - P Liu
- Department of VIP Neurology, Navy General Hospital, Beijing, China
| | - P F Wang
- Department of Neurology, Aerospace Center Hospital, Peking University Aerospace Clinical College, Beijing, China
| | - M X Wang
- Orthopaedics Department, General Hospital of Chinese People's Armed Police Forces, Beijing, China
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Chen YY, Wang MX, Luan XR, Liu CL, Zheng X. [Mental health research for new nurse during the standardized training period]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:498-501. [PMID: 27682483 DOI: 10.3760/cma.j.issn.1001-9391.2016.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the mental health status for new nurse during the standardization training period and provide scientific basis for managers to formulate corresponding measures. Methods: Using eysenck personality questionnaire (EPQ) and symptom self-assessment scale (SCL-90) , understanding social support scale (PSSS) , trait coping style questionnaire (TCSQ) and other standardized psychological assessment tools and self designed general situation questionnaire, 141 nurses in our hospital before rotary department and 1 year later accepted the questionnaire survey while the control group accepted the same questionnaire. Results: Compared with before rotary department and the control group, the forced, anxiety and interpersonal sensitivity factor increased significantly in SCL-90 for rotary nurse and the differences were significant statistical significance (P<0.05) ; Pearson correlation analysis showed rotary nurse SCL-90 forcing factor scores and EPQ-E dimension scores, TCSQ negative coping scores were positively correlated (P<0.05; r1=0.537; r2=0.407; r3=0.701) , and were negatively correlated with EPQ-E dimension scores, PSSS scores and TCSQ active responding score (P<0.05; r1=-0.621; r2=-0.671; r3=-0.312) ; Anxiety was positively correlated with EPQ-N, PSSS scores and TCSQ negative responding score (P<0.05; r1=0.607; r2=0.409; r3=0.764) , was negatively correlated with EPQ-E dimension scores, PSSS scores and TCSQ positive responding score (P<0.05; r1=-0.569; r2=-0.723; r3= -0.418) ; Interpersonal sensitivity factor score was positively correlated with EPQ-N, P dimension scores and TCSQ negative coping scores (P<0.05; r1=0.611; r2=0.687; r3=0.773) , was negatively correlated with EPQ-E dimension scores, PSSS scores and TCSQ active responding score (P<0.05; r1=-0.506; r2=-0.693; r3=-0.307) . Conclusion: Rotary nurse mental health status was significantly lower than non-rotary nurse.Insufficient social support, negative coping style and instability personality characteristics are the main risk factors to affect the rotation nurses mental health.
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Affiliation(s)
- Y Y Chen
- Qilu Hospital of Shandong University, Jinan 250012, China
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Wang GY, Xie Y, Zhou HF, Zhang J, Su J, Wang MX, Xu Y, Yang D. [The value of area curve ratio electrocochleography in diagnosisof Meniere's disease during different periods]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1142-1145. [PMID: 29798442 DOI: 10.13201/j.issn.1001-1781.2016.14.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Indexed: 11/12/2022]
Abstract
Objective:To evaluate the value of summating potential /action potential (SP/AP) area curve ratio in diagnosis of Meniere s disease(MD) during acute attacks and quiescence phase.Method:The normal control group and the MD group during acute attacks and quiescence phase received electrocochleography(EcochG)examination.The SP/AP amplitude and area curve ratios were measured respectively(to derive the SP/AP amplitude and area curve ratio),with normal SP/AP amplitude and area curve ratios of EcochG were identified,and analysed the results of EcochG in MD acute attacks and MD quiescence phase and the normal control group.Result:The upper limit of normal for SP/AP amplitude and area curve ratio were respectively 0.40 and 1.78.The SP/AP area curve ratio positive rate during acute attacks was 95.56% and SP/AP amplitude ratio was 71.77%.SP/AP area curve ratio positive rate during quiescence phase was 55.56% and amplitude ratio was 33.33%.The results showed that there were significant different between the two markers(P<0.05).The positive rate which during the period of acute attacks was higher than that quiescence phase period,The positive rate of the SP/AP amplitude and area curve ratios between acute attacks and quiescence phase were significant different(P<0.05).By the F rest,the SP/AP area curve ratio parameters in MD acute attacks and MD quiescence phase and the normal control group were compared,and the difference was significant(F=111.10,P<0.05).There were significant different between the two groups among three(P<0.05).The SP/AP area curve ratio parameters among the MD acute attacks and MD quiescence phase and the normal control group were significant different(F=65.68,P<0.05).There were significant different between the two groups among three(P<0.05).Conclusion:It can increase the positive rate when undergo the EcochG examination during acute attacks of Meniere's disease,while the SP/AP area curve measures are more sensitive than SP/AP amplitude ratio in diagnosis of Meniere's disease.
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Affiliation(s)
- G Y Wang
- Department of Otorhinolaryngology Head and Neck Surgery,General Hospital of Tianjin Medical University,Tianjin,300052,China
| | - Y Xie
- Department of Otorhinolaryngology Head and Neck Surgery,General Hospital of Tianjin Medical University,Tianjin,300052,China
| | - H F Zhou
- Department of Otorhinolaryngology Head and Neck Surgery,General Hospital of Tianjin Medical University,Tianjin,300052,China
| | - J Zhang
- Department of Otorhinolaryngology Head and Neck Surgery,General Hospital of Tianjin Medical University,Tianjin,300052,China
| | - J Su
- Department of Otorhinolaryngology Head and Neck Surgery,General Hospital of Tianjin Medical University,Tianjin,300052,China
| | - M X Wang
- Department of Otorhinolaryngology Head and Neck Surgery,General Hospital of Tianjin Medical University,Tianjin,300052,China
| | - Y Xu
- Department of Otorhinolaryngology Head and Neck Surgery,General Hospital of Tianjin Medical University,Tianjin,300052,China
| | - D Yang
- Department of Otorhinolaryngology Head and Neck Surgery,General Hospital of Tianjin Medical University,Tianjin,300052,China
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Bi X, Zhou HF, Su J, Zhang J, Wang MX. [The normative values of vestibular evoked myogenic potentialin different age-groups]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1016-1020. [PMID: 29798028 DOI: 10.13201/j.issn.1001-1781.2016.13.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Indexed: 11/12/2022]
Abstract
Objective:To obtain the normative values of vestibular evoked myogenic potential(VEMP),i.e.the threshold,latency,latency-interval,amplitude of healthy population in Tianjin medical university General hospital.These values will help clinical diagnosis.Method:Seventy-five healthy individuals (39 males and 36 females,age from 21 to 70 years)were enrolled in this study.They were divided into 3 groups according to age:group 1(21-30 years),group 2(>30-50 years),group 3(>50-70 years).oVEMP and cVEMP were performed and the normative values were obtained.SPSS 19.0 was used to analyze the data.Result:The response rate was 77.3% and 85.3% of oVEMP and cVEMP respectively in all subjects.The values of oVEMP:in group 1 response rate was 100%,amplitude was(8.29±1.25)μV and threshold value was(83.65±4.10) dBnHL.In group 2 response rate was 85.4%,amplitude was(6.32±1.21)μV and threshold value was(89.24±4.18) dBnHL.In group 3 response rate was 46%,amplitude was(4.26±1.20) μV,threshold value was(95.13±4.21) dBnHL.The values of cVEMP: in group 1 response rate was 100%,amplitude was(108.87±19.10)μV and threshold value was(84.54±4.35) dBnHL.In group 2 response rate was 83.3%,amplitude was(84.10±20.02)μV and threshold value was (90.33±4.29)dBnHL.In group 3 response rate was 72.0%,amplitude was(64.18±19.22)μV and threshold value was (95.19±4.30)dBnHL.The statistical analysis show significant difference in oVEMP/cVEMP response rate,threshold and amplitude among different age-groups(P<0.05).No significant difference was found in N1,P1 latency and latency-interval among different age-groups(P>0.05).Conclusion:The normative values of VEMP of healthy population in Tianjin medical university General hospital were obtained in this research.These VEMP data were used for the diagnosis of related diseases.
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Affiliation(s)
- X Bi
- Department of Otolaryngology,Tianjin Medical University General Hospital,Tianjin,300052,China
| | - H F Zhou
- Department of Otolaryngology,Tianjin Medical University General Hospital,Tianjin,300052,China
| | - J Su
- Department of Otolaryngology,Tianjin Medical University General Hospital,Tianjin,300052,China
| | - J Zhang
- Department of Otolaryngology,Tianjin Medical University General Hospital,Tianjin,300052,China
| | - M X Wang
- Department of Otolaryngology,Tianjin Medical University General Hospital,Tianjin,300052,China
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Wang L, Liu LH, Tong WH, Wang MX, Lu SC. Effect of CYP3A5 gene polymorphisms on tacrolimus concentration/dosage ratio in adult liver transplant patients. Genet Mol Res 2015; 14:15148-57. [PMID: 26634478 DOI: 10.4238/2015.november.25.3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We examined the influence of the cytochrome P450 3A5 (CYP3A5) genes in both donors and recipients on the concentration-dosage ratio (C/D) of tacrolimus in Chinese liver transplant patients. Fifty-one adult liver transplant patients who received tacrolimus were included in this study. The CYP3A5 polymorphism in donors and recipients was determined at the time of transplantation, and tacrolimus-based immunosuppressive therapy was started based on each patient's genetic constitution. The relationship between the C/D of tacrolimus for 3 months after surgery and the CYP3A5 genotype was analyzed. A stepwise regression model was used to analyze the relationship between C/D of tacrolimus and genotype, time course, age, and liver weight in liver transplant patients. Three months after liver transplantation, C/D was both affected by the CYP3A5 genotype of both the donors and the recipients. The C/D of tacrolimus in patients with the CYP3A5*1 allele or carrying CYP3A5*1 allele in the liver was lower than that in CYP3A5*3/*3 patients with the CYP3A5*3/*3 genotype in the liver (P < 0.01). The CYP3A5*1 genotype in donors as well as in patients both contributes to interindividual variation in the C/D of tacrolimus in adult liver transplantation.
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Affiliation(s)
- L Wang
- Department of Surgery and Liver Transplantation Center, Capital Medical University Affiliated to Youan Hospital, Beijing, China
| | - L H Liu
- Department of Pharmacy, Liberation Army Secondary Artillery Hospital, Beijing, China
| | - W H Tong
- Department of Pharmacy, Liberation Army Secondary Artillery Hospital, Beijing, China
| | - M X Wang
- Department of Pharmacy, Capital Medical University affiliated to Youan Hospital, Beijing, China
| | - S C Lu
- Department of Hepatobiliary Surgery, General Hospital of PLA, Beijing, China
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Abstract
The incidence of urinary calculus (UC) is very high in Uyghur children in the Kashi region of Xinjiang, China, which seriously affects the growth and life quality of these children. This study was aimed at investigating the risk factors of UC in Uyghur children in Kashi region. One hundred fifteen Uyghur children (age <7 years) with UC who were treated in First People's Hospital in Kashi were enrolled in the case group. A 1:1 case-control study with a questionnaire was performed. The results showed that, among the 115 UC patients, there were more boys (71.3%) than girls (28.7%), and most cases had an onset age of 1-3 years (75.7%). A lower than primary school education in the mother, drinking unboiled water, water intake <500 mL/day, and eating too much sweets were risk factors [odds ratio (OR) = 2.385, 9.160, 3.263, and 8.945, respectively], whereas vegetable intake and exposure to summer sunshine of <2 h/day were protective factors against UC onset (OR = 0.154 and 0.344, respectively). Analysis of UC-related factors in 99 cases of <3-year-old children revealed that breastfeeding was also a protective factor (OR = 0.007), whereas frequent cow's milk intake within 5 months (OR = 2.414) and frequent "panada" intake (OR = 2.529) were risk factors. The occurrence of UC in Uyghur children in the Kashi region is mainly affected by maternal educational background, quality of drinking water, water intake volume, and dietary pattern. Furthermore, geography may also have a role.
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Affiliation(s)
- H C Wang
- Health Management Center,First Affiliated Hospital of Xinjiang Medical University, Urumqi,Xinjiang, China
| | - C Liu
- Health Management Center,First Affiliated Hospital of Xinjiang Medical University, Urumqi,Xinjiang, China
| | - H Y He
- Department of Nursing, Sichuan College of Traditional Chinese Medicine, Mianyang, Sichuan, China
| | - M X Wang
- Department of Nursing, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
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Liu L, Li S, He XN, Huang X, Zhang CF, Fan LS, Wang MX, Zhou YS, Chen K, Jiang L, Silvain JF, Lu YF. Flame-enhanced laser-induced breakdown spectroscopy. Opt Express 2014; 22:7686-7693. [PMID: 24718144 DOI: 10.1364/oe.22.007686] [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: 06/03/2023]
Abstract
Flame-enhanced laser-induced breakdown spectroscopy (LIBS) was investigated to improve the sensitivity of LIBS. It was realized by generating laser-induced plasmas in the blue outer envelope of a neutral oxy-acetylene flame. Fast imaging and temporally resolved spectroscopy of the plasmas were carried out. Enhanced intensity of up to 4 times and narrowed full width at half maximum (FWHM) down to 60% for emission lines were observed. Electron temperatures and densities were calculated to investigate the flame effects on plasma evolution. These calculated electron temperatures and densities showed that high-temperature and low-density plasmas were achieved before 4 µs in the flame environment, which has the potential to improve LIBS sensitivity and spectral resolution.
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Abstract
Alfalfa (Medicago sativa Linn.), widely grown throughout the world, is an important perennial forage crop. It is high in protein and digestible fiber and is an excellent source of several vitamins (A, D, E, and K) and minerals for beef cattle, horses, sheep, goats, and even humans (2). Wilt symptoms on alfalfa were observed during a disease survey in Yangling, Shaanxi, China in 2009. Symptoms included discoloration, shortened internode, and plant death. However, the vascular tissue of diseased alfalfa plants did not exhibit discoloration and typical "V" symptoms of Verticillium albo-atrum infection. Eleven fungal isolates were obtained from diseased alfalfa plants in Yangling by a tissue isolation method (1). Isolates were cultured on Czapek Dox Agar (CDA; pH 7.2) slants at 22 ± 1°C in darkness. Colonies on CDA plates were whitish and cream-white when viewed from the underside, later becoming dark gray due to the formation of gray or dark brown chlamydospores in single or in short chains. DNA was extracted from each isolate and the internal transcribed spacer (ITS) region of the nuclear ribosomal DNA (rDNA) was amplified and sequenced using primers ITS-1F and ITS4. The 11 isolates were divided into five groups based on their in vitro morphological characters. A single isolate from each of the five groups was chosen for ITS sequencing. All five isolates had the same ITS sequence (GenBank Accession No. AB551216). On the basis of the ITS sequence and morphology (4), these isolates were identified as V. nigrescens Pethyhr. (recently renamed as Gibellulopsis nigrescens). Five representative isolates were used to fulfill Koch's postulates. Alfalfa seeds (cv. Cossack) were surface sterilized with 75% ethanol for 5 min, allowed to dry, and planted into cow dung compost that had been autoclaved at 160°C for 2 h. Plants were cultivated under controlled greenhouse conditions at 23 to 25°C with a photoperiod of 14 h. Inoculum was prepared by comminuting 15-day-old cultures and sterile deionized water into a suspension of mycelial fragments and conidia (105 to 106 CFU/ml) in a blender. Seedlings (four-leaf stage) were inoculated by immersing roots in the inoculum suspension for 60 min (3). Each isolate was inoculated onto 30 seedlings, six in each pot; another 30 seedlings were soaked with sterile deionized water for 60 min as a control. After 20 days in the greenhouse, all inoculated plants exhibited wilt symptoms similar to the original wilt symptoms observed on diseased alfalfa plants. In contrast, none of the control plants showed wilt symptoms. The pathogen was reisolated from all diseased plants and confirmed to the original ones. To our knowledge, this is the first report of V. nigrescens infecting M. sativa in China, indicating V. nigrescens as one possible important pathogen of alfalfa. References: (1) O. D. Dhingra and J. B. Sinclair. Basic Plant Pathology Methods. CRC Press, Boca Raton, FL, 1995. (2) D. Jasjeet et al. J. Adv. Sci. Res. 2:50, 2011. (3) H. A. Melouk and C. E. Horner. Phytopathology 64:1267, 1974. (4) R. Zare et al. Nova Hedwigia 85:463, 2007.
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Affiliation(s)
- X P Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - M X Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - D F Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - J R Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
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Wang MX, Zhang HL, Zhang DL, Qi YW, Fan ZL, Li DY, Pan DJ, Cao YS, Qiu ZE, Yu P, Yang QW, Wang XK, Li ZC. Genetic structure of Oryza rufipogon Griff. in China. Heredity (Edinb) 2008; 101:527-35. [PMID: 18827837 DOI: 10.1038/hdy.2008.61] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Oryza rufipogon Griff. (common wild rice; CWR) is the ancestor of Asian cultivated rice (Oryza sativa L.). Investigation of the genetic structure and diversity of CWR in China will provide information about the origin of cultivated rice and the grain quality and yield. In this study, we used 36 simple sequence repeat (SSR) markers to assay 889 accessions, which were highly representative of whole germplasm in China. The analysis revealed a hierarchical genetic structure within CWR. First, CWR has diverged into two ecotypic populations, a south subtropical population (SSP) and a middle subtropical population (MSP), probably owing to natural selection by the different climates. The distribution of specific alleles and haplotypes indicated that Chinese CWR had both indica-like and japonica-like variations; the SSP was an indica-like type, whereas the MSP was more japonica-like. The SSP and MSP further diverged into five (HN, GD-GX1, GX2, FJ and YN) and two (JX-HuN1 and HuN2) geographical populations, respectively. The genetic data suggest the isolation by distance, although water systems also appear to play an important role in the formation of homogenous populations, and occasionally landscape was also involved. The population GD-GX1, which grew widely in Guangdong and Guangxi provinces, was the largest geographical population in China. It had a high level of genetic diversity (GD) and the closest genetic relationship with other inferred populations. The population HN, with the smallest SSR molecular weights and the highest level of GD, may be the most ancestral population.
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Affiliation(s)
- M X Wang
- Key Laboratory of Crop Genomics and Genetic Improvement of Ministry of Agriculture and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, China
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Gao Q, X Chen M, Yao WJ, Gao Y, Song Y, Wang GT, Wang MX, Nie P. Phylogeny of diplozoids in five genera of the subfamily Diplozoinae Palombi, 1949 as inferred from ITS-2 rDNA sequences. Parasitology 2006; 134:695-703. [PMID: 17166320 DOI: 10.1017/s0031182006001971] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The phylogenetic relationship of 5 genera, i.e. Diplozoon Nordmann, 1832, Paradiplozoon Achmerov, 1974, Inustiatus Khotenovsky, 1978, Sindiplozoon Khotenovsky, 1981, and Eudiplozoon Khotenovsky, 1985 in the subfamily Diplozoinae Palombi, 1949 (Monogenea, Polyopisthocotylea) was inferred from rDNA ITS-2 region using neighbour-joining (NJ), maximum likelihood (ML) and Bayesian methods. The phylogenetic trees produced by using NJ, ML and Bayesian methods exhibit essentially the same topology. Surprisingly, freshwater species of Paradiplozoon from Europe clustered together with species of Diplozoon, but separated from Chinese Paradiplozoon species. The results of molecular phylogeny and lower level of divergence (4.1-15.7%) in ITS-2 rDNA among Paradiplozoon from Europe and Diplozoon and, on the other hand, high level of divergence (45.3-53.7%) among Paradiplozoon species from Europe and China might indicate the non-monophyletic origin of the genus Paradiplozoon. Also, the generic status of European Paradiplozoon needs to be revised. The species of Paradiplozoon in China is a basal group in Diplozoinae as revealed by NJ and Bayesian methods, and Sindiplozoon appears to be closely related to European Paradiplozoon and Diplozoon with their relationship to Eudiplozoon and Inustiatus being unresolved.
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Affiliation(s)
- Q Gao
- State Key Laboratory of Freshwater Ecology and Biotechnology, and Laboratory of Fish Diseases, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China
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Abstract
Piecemeal necrosis, currently called interface hepatitis, is a feature of viral hepatitis as well as autoimmune hepatitis and steatohepatitis. The mechanism of liver cell loss and piecemeal necrosis needs to be determined. We hypothesize that piecemeal necrosis in hepatitis is due to a piecemeal removal of hepatocyte cytoplasm by lymphocytic ingestion. To test this hypothesis, 61 consecutive liver biopsies were examined by light microscopy, by immunohistochemistry and by electron microscopy, and the lymphocytic-hepatocytic interaction was morphologically assessed. In cases of hepatitis C, hepatitis B, autoimmune hepatitis, primary biliary cirrhosis, and steatohepatitis, piecemeal necrosis was found. Using cytokeratin stains, it was apparent that the lymphocyte-hepatocyte interaction and piecemeal necrosis leads first to binding of the lymphocyte to hepatocyte plasma membrane and then blebbing or indentation of the hepatocyte by the lymphocyte, followed by endocytosis of liver cell cellular components and digestion in the lymphocyte lysosomes. This process is repeated while the cytoplasm and the nucleus of the hepatocyte disappear bite by bite, and only nubbins of residual hepatocytic cytoplasm remain, either attached to intact hepatocytes or surrounded and sequestered within scar tissue and lymphocytes. We conclude that piecemeal necrosis is a gradual disappearance of hepatocytes as a result of lymphocyte-hepatocyte binding and ligand internalization of liver surface molecules by the lymphocyte. This gradual process leads to a slow reduction of hepatocyte size and eventual disappearance at the interface between the lobule and portal tracts. To term this new kind of necrosis, we propose the name troxis necrosis, after the Greek noun meaning "nibbling."
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Affiliation(s)
- M X Wang
- Department of Pathology and Medicine, Harbor-UCLA Medical Center, Torrance, California 90509, USA
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Lin J, Wang MX, Wei A, Zhu W, Murrell GA. The cell specific temporal expression of nitric oxide synthase isoforms during achilles tendon healing. Inflamm Res 2001; 50:515-22. [PMID: 11713906 DOI: 10.1007/pl00000228] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE AND DESIGN We have previously shown that nitric oxide synthase (NOS) activity is upregulated following tendon injury, and that this activity is important to Achilles tendon healing. The aim of this study was to identify the cellular distribution of nitric oxide synthase isoforms during tendon healing. MATERIAL OR SUBJECTS Surgical division of the right Achilles tendon was performed in eighty-five male Sprague-Dawley rats. Healing Achilles tendons were harvested at 4, 7, 14 and 21 days following the surgery. The un-injured left Achilles tendons were used as controls. Using RNase protection assays, in situ hybridization and immunohistochemistry, mRNA and protein of NOS isoforms were evaluated. RESULTS Minimal NOS expression was found in un-injured tendon. A cell specific temporal pattern for the mRNA and protein for all three NOS isoforms was found following injury to the Achilles tendon. iNOS was maximal on day 4 in macrophages and fibroblasts. eNOS was maximal on day 4 in endothelial cells and fibroblasts. bNOS expression gradually increased up to day 21 and was found only in fibroblasts. CONCLUSIONS These results suggest that all three nitric oxide synthase isoforms are expressed by fibroblasts in a coordinated temporal sequence during tendon healing. The sequential pattern of NOS expression in healing fibroblasts suggests that each NOS isoform may play a different role in the healing process and provides opportunities to modify tendon healing in the clinical setting.
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Affiliation(s)
- J Lin
- Orthopaedic Research Institute, University of New South Wales, Sydney, Australia
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Wang MX, Wei A, Yuan J, Clippe A, Bernard A, Knoops B, Murrell GA. Antioxidant enzyme peroxiredoxin 5 is upregulated in degenerative human tendon. Biochem Biophys Res Commun 2001; 284:667-73. [PMID: 11396953 DOI: 10.1006/bbrc.2001.4991] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Peroxiredoxin 5 (PRDX5) is a novel thioredoxin peroxidase recently identified in a variety of human cells and tissues, which is considered to play an important role in oxidative stress protection mechanisms. However, little is known about its expression in tendon degeneration, a common and disabling condition that primarily affects older people, in which oxidative stress may be implicated. The present study demonstrated that normal human tendon expresses PRDX5 and its expression is significantly increased in degenerative tendon. In addition, we have localized PRDX5 to fibroblasts in normal tendon and to both fibroblasts and endothelial cells in degenerate tendon. The differential expression of PRDX5 in normal and degenerate tendon shows that a thioredoxin peroxidase with antioxidant properties is upregulated under pathophysiological conditions and suggests that oxidative stress may be involved in the pathogenesis of tendon degeneration. PRDX5 may play a protective role against oxidative stress during this pathophysiological process.
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Affiliation(s)
- M X Wang
- Orthopaedic Research Institute, St. George Hospital, University of New South Wales, 4-10 South Street, Sydney, New South Wales 2217, Australia
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Wang MX, Murrell DF, Szabo C, Warren RF, Sarris M, Murrell GA. Nitric oxide in skeletal muscle: inhibition of nitric oxide synthase inhibits walking speed in rats. Nitric Oxide 2001; 5:219-32. [PMID: 11384195 DOI: 10.1006/niox.2001.0348] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Nitric oxide (NO*) is a multifunctional messenger molecule generated by a family of enzymes called the nitric oxide synthases (NOSs). Although NOSs have been identified in skeletal muscle, specifically brain NOS (bNOS) and endothelial NOS (eNOS), their role has not been well clarified. The goals of this investigation were to (1) characterize the immunoreactivity, Ca(2+) dependence, and activity of NOS in human and rat skeletal muscle and (2) using a rat model, investigate the effect of chronic blockade of NOS on skeletal muscle structure and function. Our results showed that both human and rodent skeletal muscle had NOS activity. This NOS activity was similar to that of the endothelial and brain NOS isoforms in that it was calcium-dependent. However, Western blot analysis consistently showed that a polyclonal antibody raised against a peptide sequence of human inducible NOS (iNOS) reacted with a protein with a molecular weight (95 kDa) that was different from that of other NOS isoforms. RT-PCR analysis identified the mRNA expression of not only eNOS and bNOS but also iNOS in human and rat muscle. Inhibition of nitric oxide synthase in rats with N(omega)-nitro-L-arginine methyl ester (L-NAME) resulted in a progressive, severe reduction in walking speed (30-fold reduction in walking velocity at day 22, P < 0.001), muscle fiber cross-sectional area (40% reduction at day 22, P < 0.001), and muscle mass (40% reduction in dry weight at day 22, P < 0.01). Rats fed the same regimen of the enantiomer of L-NAME (d-NAME) had normal motor function, muscle fiber morphology, and muscle mass. Taken together, these results imply that there may be a novel nitric oxide synthase in muscle and that NO. generated from muscle may be important in muscle function.
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Affiliation(s)
- M X Wang
- Orthopaedic Research Institute, St George Hospital Campus, University of New South Wales, Sydney, Australia
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Szomor ZL, Wang MX, Kruller A, Murrell GA, Farmer KM, Kirkham BW, Bonar F. Differential expression of cytokines and nitric oxide synthase isoforms in human rotator cuff bursae. Ann Rheum Dis 2001; 60:431-2. [PMID: 11284458 PMCID: PMC1753611 DOI: 10.1136/ard.60.4.431] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wang MX, Gray TB, Park WC, Prabhasawat P, Culbertson W, Forster R, Hanna K, Tseng SC. Reduction in corneal haze and apoptosis by amniotic membrane matrix in excimer laser photoablation in rabbits. J Cataract Refract Surg 2001; 27:310-9. [PMID: 11226800 DOI: 10.1016/s0886-3350(00)00467-3] [Citation(s) in RCA: 97] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE To determine whether preserved human amniotic membrane can reduce corneal haze and keratocyte apoptosis induced by excimer laser photoablation in rabbit corneas. METHODS Excimer photoablation was performed bilaterally in 30 rabbits with a 6.0 mm ablation zone and 120 microm depth using the VISX Star laser with the phototherapeutic keratectomy (PTK) mode. One eye was randomly covered by preserved human amniotic membrane secured with 4 interrupted 10-0 nylon sutures, and the other eye served as the control. The amniotic membranes were removed at 1 week, and corneal haze was graded with slitlamp biomicroscopy by 3 masked corneal specialists biweekly for the ensuing 12 weeks until the rabbits were killed. Another 18 rabbits were divided into 4 subgroups and received PTK alone, PTK with membrane, PTK with sham sutures, or PTK with tarsorrhaphy. All eyes were studied histologically, and 3 eyes in each group were studied by in situ terminal deoxynucleotidyl transferase deoxy-UTP-nick end labeling assay at 1, 3, and 7 days and 12 weeks, respectively. RESULTS A consistent grading of differences in corneal haze scoring between the control corneas and the amniotic-membrane-covered corneas was noted among the 3 masked observers. Organized reticular post-PTK corneal haze peaked at 7 weeks in both groups, and the corneal haze score in the amniotic-membrane-covered group was significantly less than in the control group from 7 to 12 weeks (all P < .001). Compared to the control corneas, the amniotic-membrane-covered corneas had less inflammatory response at 1 and 3 days, less keratocyte apoptosis in the ablated anterior corneal stroma at 1, 3, and 7 days (P < .001), and less stromal fibroblast cellularity and epithelial hyperplasia at 12 weeks. CONCLUSIONS Amniotic membrane matrix introduced at an early stage of the corneal wound healing process effectively reduced corneal haze induced by excimer laser photoablation in rabbits. Studies linking suppression of apoptosis in the acute wound-healing process with reduction of subsequent corneal scarring may have useful clinical applications.
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Affiliation(s)
- M X Wang
- Vanderbilt Laser Sight Center and Department of Ophthalmology and Visual Sciences, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-8808, USA.
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Abstract
We investigated the temporal expressions of the three nitric oxide synthase (NOS) isoforms by semi-quantitative polymerase chain reaction (PCR) assays and by immunoblot analysis, following Achilles tendon transection in rats. Four days after injury, there were increases in the steady-state levels of mRNA for all three NOS isoforms, with peaks for the inducible isoform (iNOS) (23-fold increase) at day 4, the endothelial isoform (eNOS) (24-fold increase) at day 7 and the neuronal isoform (bNOS) (seven-fold increase) at day 21. The temporal expression of NOS isoforms at a protein level was consistent with the results at the mRNA level. We have previously shown a five-fold increase in the NOS activity, as detected by 3H-arginine to 3H-citrulline conversion, at day 7 postinjury. These findings indicate that all three NOS isoforms are expressed during tendon healing with differential expression patterns during the various phases of tendon healing. These findings may prove clinically relevant with respect to strategies for regulating tendon healing.
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Affiliation(s)
- J H Lin
- Orthopaedic Research Institute, St. George Hospital Campus, University of New South Wales, Sydney, Australia
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47
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Abstract
TUP1 encodes a transcriptional repressor that negatively controls filamentous growth in Candida albicans. Using subtractive hybridization, we identified six genes, termed repressed by TUP1 (RBT), whose expression is regulated by TUP1. One of the genes (HWP1) has previously been characterized, and a seventh TUP1-repressed gene (WAP1) was recovered due to its high similarity to RBT5. These genes all encode secreted or cell surface proteins, and four out of the seven (HWP1, RBT1, RBT5, and WAP1) encode putatively GPI-modified cell wall proteins. The remaining three, RBT2, RBT4, and RBT7, encode, respectively, an apparent ferric reductase, a plant pathogenesis-related protein (PR-1), and a putative secreted RNase T2. The expression of RBT1, RBT4, RBT5, HWP1, and WAP1 was induced in wild-type cells during the switch from the yeast form to filamentous growth, indicating the importance of TUP1 in regulating this process and implicating the RBTs in hyphal-specific functions. We produced knockout strains in C. albicans for RBT1, RBT2, RBT4, RBT5, and WAP1 and detected no phenotypes on several laboratory media. However, two animal models for C. albicans infection, a rabbit cornea model and a mouse systemic infection model, revealed that rbt1Delta and rbt4Delta strains had significantly reduced virulence. TUP1 appears, therefore, to regulate many genes in C. albicans, a significant fraction of which are induced during filamentous growth, and some of which participate in pathogenesis.
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Affiliation(s)
- B R Braun
- Department of Microbiology, University of California, San Francisco, California 94143-0414, USA.
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Kanitkar KD, Camp J, Humble H, Shen DJ, Wang MX. Pain After Epithelial Removal by Ethanol-assisted Mechanical Versus Transepithelial Excimer Laser Debridement. J Refract Surg 2000; 16:519-22. [PMID: 11019866 DOI: 10.3928/1081-597x-20000901-06] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
PURPOSE To compare subjective pain responses between two techniques of epithelial removal prior to photorefractive keratectomy (PRK) treatment: ethanol-soaked pledget with mechanical debridement of the epithelium versus excimer laser transepithelial ablation. METHODS Nine patients underwent bilateral PRK. Each had the epithelium in one eye debrided by placing a pledget soaked in 20% ethanol on the cornea for 2 minutes followed by gentle scraping with a blade. The epithelium in the other eye was removed by transepithelial phototherapeutic keratectomy (PTK) treatment. For each eye, PRK was initiated immediately after removal of the epithelium. On postoperative day one, each patient was asked to rate the level of pain suffered over the last 24 hours on a scale of 0 (minimal) to 10 (maximal). Data were analyzed in a masked fashion. RESULTS Postoperative day one average pain level in the ethanol-assisted mechanically debrided eyes was 3.0 +/- 2.5 and in the transepithelial PTK eyes was 6.8 +/- 1.8. The difference was statistically significant by Student's t-test (P < .01). All epithelial defects healed within 3 days with no clinically significant difference in healing time between the two techniques. CONCLUSION In preparation for PRK, ethanol-assisted mechanical debridement of the epithelium caused significantly less postoperative pain than epithelial removal using the excimer laser.
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Affiliation(s)
- K D Kanitkar
- Department of Ophthalmology and Visual Sciences, Vanderbilt University School of Medicine, Nashville, TN 37232-8808, USA
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49
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Abstract
PURPOSE To report a case of recurrent fungal sclerokeratitis and endophthalmitis with a very successful outcome due to aggressive combined surgical and medical therapy. To discuss the management of this potentially devastating infection. METHODS A 65-year-old man presented with 6 months of left eye redness and irritation after injury from organic matter propelled from an airboat. Initially, he had been treated with foreign body removal, antibiotics, and steroids. He was diagnosed with reactive sclerokeratitis at presentation and was treated with steroids. However, when he did not improve, cultures were obtained and Acremonium species filamentous fungi was identified. Despite treatment with appropriate topical and systemic antifungals, his fungal sclerokeratitis progressed to endophthalmitis. Two therapeutic penetrating keratoplasties (PKs) with iridectomy and intraocular amphotericin B were necessary to eradicate the fungal infection. RESULTS Visual acuity was restored to 20/25-3 with correction 9 months after initial presentation. There was no recurrence of fungal infection after the second therapeutic PK. CONCLUSION The possible reasons for recurrence of fungal infection are discussed. The role of timely and aggressive medical and surgical intervention for fungal sclerokeratitis and endophthalmitis in restoring excellent vision is emphasized.
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Affiliation(s)
- M X Wang
- Vanderbilt University Medical Center, Department of Ophthalmology, Nashville, Tennessee 37212, USA
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Wang XL, Sim AS, Wang MX, Murrell GA, Trudinger B, Wang J. Genotype dependent and cigarette specific effects on endothelial nitric oxide synthase gene expression and enzyme activity. FEBS Lett 2000; 471:45-50. [PMID: 10760510 DOI: 10.1016/s0014-5793(00)01356-9] [Citation(s) in RCA: 161] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We explored the interactive effects of endothelial nitric oxide synthase (eNOS) genotypes and cigarette smoking on protein levels and enzyme activity in 33 postpartum placentas. Whilst the eNOS protein levels were lower in the rare allele (0.48+/-0.11, n=9 vs. 1. 05+/-0.10, n=24, P<0.01), the eNOS enzyme activity was about 7-fold higher in the rare allele (4556.2+/-255.4 vs. 621.8+/-180.5 cpm/mg/min, P<0.01). Smokers had lower eNOS protein levels (1.07+/-0. 09 vs. 0.50+/-0.19, P<0.05) in both alleles. It reduced the eNOS activities only in the rare allele (non-smokers: 6143.8+/-251.2, n=5, smokers: 2968.5+/-259.4, n=4, 52% reduction, P<0.01). We conclude that associations between eNOS polymorphism and protein levels and enzyme activities are modifiable by smoking, the effects of smoking are dependent on the eNOS genotypes.
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Affiliation(s)
- X L Wang
- Department of Genetics, Southwest Foundation for Biomedical Research, P.O. Box 760549, San Antonio, TX 78245-0549, USA.
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