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Shang GQ, Xiang S, Guo CC, Guo JJ, Zhang HN, Wang YZ, Xu H. [Diagnostic value of platelet associated biomarkers in chronic periprosthetic joint infection]. Zhonghua Wai Ke Za Zhi 2021; 59:767-772. [PMID: 34404175 DOI: 10.3760/cma.j.cn112139-20210401-00152] [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: 11/05/2022]
Abstract
Objective: To evaluate the diagnostic value of platelet count(PC),PC to mean platelet volume(MPV) ratio(PC/MPV) and plateletcrit(PCT) in chronic periprosthetic joint infection(PJI). Method: The medical records of 159 patients who underwent hip or knee revisions at Department of Joint Surgery,Affiliated Hospital of Qingdao University from August 2013 to June 2019 were retrospectively reviewed. There were 51 patients(26 knees and 25 hips) in the PJI group,which included 28 males and 23 females,aged (68.0±11.8)years (range:32 to 84 years)with a body mass index(BMI)of (26.1±3.6) kg/m².There were 116 patients(19 knees and 97 hips) in the aseptic loosening(AL) group,including 67 males and 49 females,aged (70.3±8.9)years(range:49 to 89 years)with a BMI of (25.0±3.6)kg/m².The plasma C-reactive protein(CRP),erythrocyte sedimentation rate(ESR),PC,MPV,PC/MPV and PCT levels of the two groups were recorded and analyzed. Receiver operating characteristic curve was used to calculate the sensitivity and specificity of each biomarker,expect for MPV,and the diagnostic value of each biomarker was compared according to the area under the curve(AUC).Independent-sample t test or Mann-Whitney U test were used for comparison between groups. Result: Compared with AL group,AJI group had significantly higher levels of CRP,ESR,PC,PC/MPV and PCT(all P<0.05),but lower level of MPV (P<0.05).The AUCs for CRP,ESR,PC,PC/MPV and PCT were 0.820, 0.829, 0.689, 0.668 and 0.676,respectively. Based on the Youden index,the optimal predictive cutoff for CRP was 11.12 mg/L,with a sensitivity of 74.4% and a specificity of 87.1%.The optimal predictive cutoff for ESR was 17.60 mm/1 h,with a sensitivity of 81.4% and a specificity of 75.3%.The optimal predictive cutoff for PC was 243.00×109/L,with a sensitivity of 60.6% and a specificity of 71.8%.The optimal predictive cutoff for PC/MPV was 24.95,the sensitivity was 58.1% and the specificity was 74.1%.And the optimal predictive cutoff for PCT was 0.24%,with a sensitivity of 69.8% and a specificity of 63.5%. Conclusion: PC,PC to MPV ratio and PCT were of limited value to diagnose PJI.
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Affiliation(s)
- G Q Shang
- Department of Joint Surgery,Affiliated Hospital of Qingdao University,Qingdao 266000,China
| | - S Xiang
- Department of Joint Surgery,Affiliated Hospital of Qingdao University,Qingdao 266000,China
| | - C C Guo
- Department of Joint Surgery,Affiliated Hospital of Qingdao University,Qingdao 266000,China
| | - J J Guo
- Department of Joint Surgery,Affiliated Hospital of Qingdao University,Qingdao 266000,China
| | - H N Zhang
- Department of Joint Surgery,Affiliated Hospital of Qingdao University,Qingdao 266000,China
| | - Y Z Wang
- Department of Joint Surgery,Affiliated Hospital of Qingdao University,Qingdao 266000,China
| | - H Xu
- Department of Joint Surgery,Affiliated Hospital of Qingdao University,Qingdao 266000,China
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Wang S, Xu LC, Pei YW, Wang M, Bi ZQ, Zhang HN, Liu L, Fang M, Kou ZQ. [Molecular epidemiology of drug resistance genes and carbapenem resistance of Pseudomonas aeruginosa in rural well water]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:898-902. [PMID: 34814485 DOI: 10.3760/cma.j.cn112338-20200904-01127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To analyze molecular epidemiological characteristics of drug resistance genes and carbapenem resistance of Pseudomonas aeruginosa (PA) in rural well water. Methods: According to Citation of Natural Mineral Water Inspection (GB 8538-2016), a total of 112 well water samples were tested in Juye county of Shandong province, and PFGE and drug susceptibility test were conducted for the identified PA strains. After PCR identification of carbapenem resistance genes, S1-PFGE and Southern blotting were used to determine the location of drug resistance genes, and combined experiments were used to determine gene transferability. Results: The detection rate of PA in rural well water samples in Juye county of Shandong province was 54.46% (61/112). The 61 strains could be divided into 56 PFGE types. There were 2 strains with 100.00% consistent band types, and there was no obvious predominant band type. The results of drug susceptibility experiments showed that 93.44% (57/61) were multi-drug resistant strains, and there were 2 strains carrying blaVIM-2, both of which were located on the plasmid, and both of them were transferred horizontally with the plasmid. Conclusion: PA carrying carbapenem resistance genes was detected in well water of rural communities in Juye country, and there is the possibility of horizontal transmission of such resistance genes.
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Affiliation(s)
- S Wang
- Insitute of Infectious Disease Control and Prevention, Shandong Center for Disease Control and Prevention, Ji'nan 250014, China
| | - L C Xu
- Insitute of Infectious Disease Control and Prevention, Shandong Center for Disease Control and Prevention, Ji'nan 250014, China
| | - Y W Pei
- General Office, Shandong Center for Disease Control and Prevention, Ji'nan 250014, China
| | - M Wang
- Insitute of Infectious Disease Control and Prevention, Shandong Center for Disease Control and Prevention, Ji'nan 250014, China
| | - Z Q Bi
- General Office, Shandong Center for Disease Control and Prevention, Ji'nan 250014, China
| | - H N Zhang
- Insitute of Infectious Disease Control and Prevention, Shandong Center for Disease Control and Prevention, Ji'nan 250014, China
| | - L Liu
- Insitute of Infectious Disease Control and Prevention, Shandong Center for Disease Control and Prevention, Ji'nan 250014, China
| | - M Fang
- Insitute of Infectious Disease Control and Prevention, Shandong Center for Disease Control and Prevention, Ji'nan 250014, China
| | - Z Q Kou
- Insitute of Infectious Disease Control and Prevention, Shandong Center for Disease Control and Prevention, Ji'nan 250014, China
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Lai ZB, Zhu YZ, Zou YX, Zhang HN, Li X, Zhong DG, Yang KY, Lai JH, Shen GD. [Modified posteromedial approach via lateral side of flexor hallucis longus for the treatment of posterior Pilon fracture]. Zhonghua Yi Xue Za Zhi 2021; 101:1077-1082. [PMID: 33878835 DOI: 10.3760/cma.j.cn112137-20200828-02484] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Objective: To compare the clinical efficacy and the level of muscle and soft tissue damage between modified posteromedial approach via lateral side of flexor hallucis longus and modified posteromedial approach in the treatment of posterior Pilon fracture. Methods: Total of 43 patients (27 males and 16 females, aged from 19 to 71 years) diagnosed with posterior Pilon fracture from June 2016 to June 2018 in Foshan Hospital of Traditional Chinese Medicine were randomly divided into observation group (modified posteromedial approach via lateral side of flexor hallucis longus, 21 cases) and control group (modified posteromedial approach, 22 cases) according to the operation approach. The preoperative waiting time, intraoperative time, intraoperative blood loss, hospitalization time and the complications were recorded and compared between the two groups. The differences of blood creatine kinase (CK), myoglobin (Myo) and C-reactive protein (CRP) at different time points before and after operation were compared between the two groups to elevate the level of muscle and soft tissue damage. The fracture reduction qualities of the two groups were compared by Burwell-Charnley criteria. The differences of fracture healing time, range of motion of metatarsophalangeal joint of the great toe (MTP-ROM), ankle range of motion (Ankle-ROM), American Orthopaedic Foot & Ankle Society (AOFAS) score and visual analogue scale (VAS) score of pain were compared between the two groups at the last follow-up. Results: The observation group and the control group were followed-up for (19±6) months and (16±8) months, respectively; there was no significant difference between the two groups (P>0.05). There were no significant differences in preoperative waiting time, intraoperative blood loss, hospitalization time and fracture healing time between the two groups (all P>0.05). At the last follow-up, there was no significant difference in the MTP-ROM and Ankle-ROM between the two groups (both P>0.05); the AOFAS score of the observation group was 88.2±7.8 and it was 84.5±7.6 in the control group (P>0.05); the VAS score of the observation group was (0.9±1.0) and it was (1.3±0.8) in the control group(P>0.05). Anatomical reduction rate in observation group was higher than that in control group (90.5% vs 81.8%, P>0.05). The operation time in the observation group was (87±16) min and it was (98±11) min in the control group (P<0.05). CK, Myo and CRP were increased in both groups after surgery, but there was no statistical significance between groups at the same time point (all P>0.05). There was no nerve injury in the observation group, while 2 cases (9.0%) of nerve paralysis occurred in the control group. No incision infection and checkrein deformity of the Hallux was found in the two groups. Conclusion: The modified posteromedial approach via lateral side of flexor hallucis longus can obtain good operative field exposure, and does not increase muscle and soft tissue injury, with shorter operative time and fewer complications, without nerve injury and checkrein deformity, it is a safe approach for the treatment of posterior Pilon fracture.
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Affiliation(s)
- Z B Lai
- The Second Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Y Z Zhu
- Department of Foot and Ankle Surgery, Foshan Hospital of Traditional Chinese Medicine, Foshan 528000, China
| | - Y X Zou
- Department of Foot and Ankle Surgery, Foshan Hospital of Traditional Chinese Medicine, Foshan 528000, China
| | - H N Zhang
- Department of Foot and Ankle Surgery, Foshan Hospital of Traditional Chinese Medicine, Foshan 528000, China
| | - X Li
- Department of Foot and Ankle Surgery, Foshan Hospital of Traditional Chinese Medicine, Foshan 528000, China
| | - D G Zhong
- Department of Foot and Ankle Surgery, Foshan Hospital of Traditional Chinese Medicine, Foshan 528000, China
| | - K Y Yang
- Department of Foot and Ankle Surgery, Foshan Hospital of Traditional Chinese Medicine, Foshan 528000, China
| | - J H Lai
- Department of Foot and Ankle Surgery, Foshan Hospital of Traditional Chinese Medicine, Foshan 528000, China
| | - G D Shen
- Department of Foot and Ankle Surgery, Foshan Hospital of Traditional Chinese Medicine, Foshan 528000, China
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Li XP, Wang SF, Hou PB, Liu J, Du P, Bai L, Fanning S, Zhang HN, Chen YZ, Zhang YK, Kang DM. Nosocomial cross-infection of hypervirulent Listeria monocytogenes sequence type 87 in China. Ann Transl Med 2020; 8:603. [PMID: 32566629 PMCID: PMC7290528 DOI: 10.21037/atm-19-2743] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Background To investigate the epidemiological and phenotypic characteristics and molecular relatedness of L. monocytogenes, which were cultured from the blood and cerebrospinal fluid (CSF) samples isolated from two neonates. Methods In the present case study, two infected neonates were interviewed and epidemiological investigation performed. The phenotypic characteristics and molecular relatedness of L. monocytogenes was characterized by serotyping, pulsed-field gel electrophoresis and whole-genome sequencing (WGS). Results The field investigation found that the two neonates were born in the same hospital (Hospital B) and admitted to the neonatal department through different channels within half an hour by different nurses, where they were weighed and placed in different but adjacent incubators. Then they were cared for by the same group of nurses that evening. It is worth noting that there was no record of sanitation of the neonatal incubator of neonate-1. The serotype of the two isolated L. monocytogenes were 1/2b, with an indistinguishable pulsotypes and were sequence type (ST) 87. WGS showed that there were no core SNP differences identified. In order to explore the genomic traits associated with L. monocytogenes virulence genes, we identified the Listeria pathogenicity island 4 and found that the genome was devoid of any stress islands. There are no positive results from the environmental samples. Considering the genomic data together with epidemiological evidence and clinical symptoms, insufficient surface cleaning along with the nursing staff caring for these neonates was considered as cross-infection factors. Conclusions To our knowledge, this is the first report of a nosocomial cross-infection of L. monocytogenes ST87 between two neonates, which carries the recently identified gene cluster expressing the cellobiose-family phosphotransferase system (PTS-LIPI-4) between two neonates. The test results of environmental samples in the hospital indicate that strict sterilization and patient isolation measures cannot be emphasized enough in neonatal nursing.
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Affiliation(s)
- Xin-Peng Li
- Shandong Center for Disease Control and Prevention, Jinan 250014, China.,Academy of Preventive Medicine, Shandong University, Jinan 250014, China.,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - Shi-Fu Wang
- Department of Children's Medical Laboratory Diagnosis Center, Qilu Children's Hospital of Shandong University, Jinan 250022, China
| | - Pei-Bin Hou
- Shandong Center for Disease Control and Prevention, Jinan 250014, China.,Academy of Preventive Medicine, Shandong University, Jinan 250014, China.,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - Jing Liu
- Shandong Center for Disease Control and Prevention, Jinan 250014, China.,Academy of Preventive Medicine, Shandong University, Jinan 250014, China.,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - Pengcheng Du
- Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Li Bai
- China National Center for Food Safety Risk Assessment, Beijing 100022, China
| | - Séamus Fanning
- UCD-Centre for Food Safety, School of Public Health, Physiotherapy and Sports Science, University College Dublin, Belfield, Dublin, Ireland
| | - Hua-Ning Zhang
- Shandong Center for Disease Control and Prevention, Jinan 250014, China.,Academy of Preventive Medicine, Shandong University, Jinan 250014, China.,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - Yu-Zhen Chen
- Shandong Center for Disease Control and Prevention, Jinan 250014, China.,Academy of Preventive Medicine, Shandong University, Jinan 250014, China.,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - Yun-Kui Zhang
- Department of Children's Medical Laboratory Diagnosis Center, Qilu Children's Hospital of Shandong University, Jinan 250022, China
| | - Dian-Min Kang
- Shandong Center for Disease Control and Prevention, Jinan 250014, China.,Academy of Preventive Medicine, Shandong University, Jinan 250014, China.,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
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Xu XP, Guo PC, Gao HS, Sun Y, Wang YZ, Zhang HN. [A comparative analysis of the efficacy of Advance(®) medial pivot prosthesis knee arthroplasty with posterior cruciate ligament retention or substituting based on propensity score matching]. Zhonghua Yi Xue Za Zhi 2020; 100:187-191. [PMID: 32008284 DOI: 10.3760/cma.j.issn.0376-2491.2020.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the clinical outcome of posterior cruciate ligament (PCL) retention type and PCL substituting type using Advance(®) Medial Pivot (AMP) inner-axis knee prosthesis. Methods: A retrospective analysis was conducted on the cases of total knee arthroplasty (TKA) with AMP prosthesis in the Affiliated Hospital of Qingdao University from January 2011 to September 2016. The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), American Knee Society Knee Score (KSS) clinical scores, KSS functional scores and knee-joint range of motion (ROM) before and after TKA, and Forgotten Joint Scores (FJS) after TKA were collected. The matching group was obtained by 1∶1 propensity score matching (PSM). Results: Complete scoring data were obtained in 47 knees of CR group and 1 059 knees of CS group, there were statistical differences in age, sex, body mass index, preoperative WOMAC score, preoperative KSS function score and ROM between the two groups (all P<0.05), except preoperative KSS clinical score (25±4 and 24±7, respectively, t=0.82, P=0.41). With the PSM matching, 37 knees in CR group and 37 knees in CS group were obtained. No significant differences in preoperative indexes were found between the matching groups (all P>0.05). The WOMAC, KSS clinical scores, KSS functional scores and ROM after TKA in each matching group were all much better than those before TKA (all P<0.05); no statistical differences existed in WOMAC, KSS clinical scores, KSS functional scores, ROM and FJS after TKA between the matching groups (all P>0.05). One PCL injury was found in CR matching group after TKA. Incidence of complications in the CR matching group (8.1%) was higher than that in the CS matching group (2.7%), but there was no statistical difference (χ(2)=1.04, P=0.31). Conclusions: When using AMP prosthesis, both CR insert and CS insert can obtain good clinical results in TKA. The potential risk of PCL injury and other complications after CR TKA makes it necessary for surgeons to carefully select an appropriate type of prosthesis.
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Affiliation(s)
- X P Xu
- Department of Joint Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - P C Guo
- Department of Joint Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - H S Gao
- Department of Joint Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Y Sun
- Department of Joint Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Y Z Wang
- Department of Joint Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - H N Zhang
- Department of Joint Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
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Li GL, Zhang HN, Shao H, Wang GY, Zhang YY, Zhang YJ, Zhao LN, Guo XL, Sheteiwy MS. ZmHsf05, a new heat shock transcription factor from Zea mays L. improves thermotolerance in Arabidopsis thaliana and rescues thermotolerance defects of the athsfa2 mutant. Plant Sci 2019; 283:375-384. [PMID: 31128708 DOI: 10.1016/j.plantsci.2019.03.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 03/07/2019] [Accepted: 03/08/2019] [Indexed: 05/05/2023]
Abstract
High temperature directly affects the yield and quality of crops. Plant Hsfs play vital roles in plant response to heat shock. In the present study, ZmHsf05 was isolated from maize (Zea mays L.) using homologous cloning methods. The sequencing analysis demonstrated that CDS of ZmHsf05 was 1080 bp length and encoded a protein containing 359 amino acids. The putative amino acid sequence of ZmHsf05 contained typical Hsf domains, such as DBD, OD, NLS and AHA motif. Subcellular localization assays displayed that the ZmHsf05 is localized to the nucleus. ZmHsf05 was expressed in many maize tissues and its expression level was increased by heat stress treatment. ZmHsf05 rescued the reduced thermotolerance of the athsfa2 mutant in Arabidopsis seedlings. Arabidopsis seedlings of ZmHsf05-overexpressing increased both the basal and acquired thermotolerances. After heat stress, the ZmHsf05-overexpressing lines showed enhanced survival rate and chlorophyll content compared with WT seedlings. The expression of Hsps was up-regulated in the ZmHsf05-overexpressing Arabidopsis lines after heat stress treatment. These results suggested that ZmHsf05 plays an important role in both basal and acquired thermotolerance in plants.
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Affiliation(s)
- Guo-Liang Li
- Plant Genetic Engineering Center of Hebei Province/Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, PR China
| | - Hua-Ning Zhang
- Plant Genetic Engineering Center of Hebei Province/Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, PR China
| | - Hongbo Shao
- Salt-soil Agricultural Center, Key Laboratory of Agricultural Environment in the Lower Reaches of Yangtze River Plain, Institute of Agriculture Resources and Environment, Jiangsu Academy of Agriculture Science(JAAS), Nanjing, 210014, PR China; College of Environment and Safety Engineering, Qingdao University of Science & Technology, Qingdao 266000, China; Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Yancheng Teachers University, Yancheng, 224002, PR China.
| | - Gui-Yan Wang
- Faculty of Agronomy, Hebei Agricultural University, Baoding, 071001, PR China.
| | - Yuan-Yuan Zhang
- Plant Genetic Engineering Center of Hebei Province/Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, PR China; College of Life Science, Hebei Normal University, Shijiazhuang 050024, PR China
| | - Yu-Jie Zhang
- Plant Genetic Engineering Center of Hebei Province/Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, PR China; College of Agriculture and Forestry Science and Technology, Hebei North University, Zhangjiakou, 075000, PR China
| | - Li-Na Zhao
- Plant Genetic Engineering Center of Hebei Province/Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, PR China; Faculty of Agronomy, Hebei Agricultural University, Baoding, 071001, PR China
| | - Xiu-Lin Guo
- Plant Genetic Engineering Center of Hebei Province/Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, PR China.
| | - Mohamed Salah Sheteiwy
- Salt-soil Agricultural Center, Key Laboratory of Agricultural Environment in the Lower Reaches of Yangtze River Plain, Institute of Agriculture Resources and Environment, Jiangsu Academy of Agriculture Science(JAAS), Nanjing, 210014, PR China
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Song Q, Li L, Zhuo N, Zhang HN, Chen X, Li YX. Synthesis of coral-globular-like composite Ag/TiO 2-SnO 2 and its photocatalytic degradation of rhodamine B under multiple modes. Water Sci Technol 2017; 76:2120-2132. [PMID: 29068341 DOI: 10.2166/wst.2017.323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Taking cetyltrimethylammonium bromide (CTAB) as the template and using TiO2 as the substrate, coral-globular-like composite Ag/TiO2-SnO2 (CTAB) was successfully synthesized by the sol-gel combined with a temperature-programmed treatment method. X-ray diffraction, scanning electron microscopy (SEM), UV-vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, SEM combined with X-ray energy dispersive spectroscopy, and N2 adsorption-desorption tests were employed to characterize samples' crystalline phase, chemical composition, morphology and surface physicochemical properties. Results showed that composites not only had TiO2 anatase structure, but also had some generated SnTiO4, and the silver species was metallic Ag0. Ag/TiO2-SnO2 (CTAB) possessed a coral-globular-like structure with nanosheets in large quantities. The photocatalytic activity of Ag/TiO2-SnO2 (CTAB) had studied by degrading organic dyes under multi-modes, mainly using rhodamine B as the model molecule. Results showed that the coral-globular-like Ag/TiO2-SnO2 (CTAB) was higher photocatalytic activity than that of commercial TiO2, Ag/TiO2-SnO2, TiO2-SnO2 (CTAB), and TiO2-SnO2 under ultraviolet light irradiation. Moreover, Ag/TiO2-SnO2 (CTAB) composite can significantly affect the photocatalytic degradation under multi-modes including UV light, visible light, simulated solar light and microwave-assisted irradiation. Meanwhile, the photocatalytic activity of Ag/TiO2-SnO2 (CTAB) was maintained even after three cycles, indicating that the catalyst had good usability.
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Affiliation(s)
- Q Song
- College of Materials Science and Engineering, Qiqihar University, Qiqihar 161006, China E-mail: ; ; College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China
| | - L Li
- College of Materials Science and Engineering, Qiqihar University, Qiqihar 161006, China E-mail: ; ; College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China; College of Heilongjiang Province Key Laboratory of Fine Chemicals, Qiqihar 161006, China
| | - N Zhuo
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China
| | - H N Zhang
- College of Materials Science and Engineering, Qiqihar University, Qiqihar 161006, China E-mail: ;
| | - X Chen
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China
| | - Y X Li
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China
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Li XP, Gao RH, Hou PB, Ren YY, Zhang HN, Jiang KY, Chen YZ, Qi ZG, Xu M, Bi ZW. Characterization of the Salmonella enterica Serotype Isangi Isolated from Patients for the First Time in China. Foodborne Pathog Dis 2017; 14:427-431. [PMID: 28497996 DOI: 10.1089/fpd.2016.2269] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
No studies have reported the isolation of serotype Salmonella Isangi from cases of salmonellosis in mainland China. We investigated an outbreak of foodborne disease with salmonella and collected the samples from the patients and surplus foods. Salmonella strains were isolated and the serotype was identified according to the Kauffmann-White scheme. The relatedness of the isolates was determined using pulsed-field gel electrophoresis (PFGE) and whole genome sequencing (WGS). Antimicrobial susceptibility was conducted by the broth microdilution method. There were 74 diners in the case, 33 of which got ill, with an attack rate of 44.6% (33/74). A total of 24 samples were collected from the outbreak cases, six Salmonella Isangi strains were isolated and susceptible to all tested drugs. PFGE and WGS analysis suggested that the pathogen dissemination through a single or limited vector(s), the steamed fish and mixed food (fry spicy chicken, braised pork ribs, and goose leg), may be the source of infection or be cross-contaminated. We first report the characteristics of an outbreak and molecular strain relatedness of Salmonella Isangi in mainland China.
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Affiliation(s)
- Xin-Peng Li
- 1 Shandong Center for Disease Control and Prevention , Jinan, China .,2 Academy of Preventive Medicine, Shandong University , Jinan, China .,3 Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention , Jinan, China
| | - Ri-Hong Gao
- 4 Haiyang Center for Disease Control and Prevention , Haiyang, China
| | - Pei-Bin Hou
- 1 Shandong Center for Disease Control and Prevention , Jinan, China .,2 Academy of Preventive Medicine, Shandong University , Jinan, China .,3 Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention , Jinan, China
| | - Yan-Yan Ren
- 1 Shandong Center for Disease Control and Prevention , Jinan, China .,2 Academy of Preventive Medicine, Shandong University , Jinan, China .,3 Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention , Jinan, China
| | - Hua-Ning Zhang
- 1 Shandong Center for Disease Control and Prevention , Jinan, China .,2 Academy of Preventive Medicine, Shandong University , Jinan, China .,3 Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention , Jinan, China
| | - Kui-Ying Jiang
- 4 Haiyang Center for Disease Control and Prevention , Haiyang, China
| | - Yu-Zhen Chen
- 1 Shandong Center for Disease Control and Prevention , Jinan, China .,2 Academy of Preventive Medicine, Shandong University , Jinan, China .,3 Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention , Jinan, China
| | - Zi-Gang Qi
- 4 Haiyang Center for Disease Control and Prevention , Haiyang, China
| | - Min Xu
- 4 Haiyang Center for Disease Control and Prevention , Haiyang, China
| | - Zhen-Wang Bi
- 1 Shandong Center for Disease Control and Prevention , Jinan, China .,2 Academy of Preventive Medicine, Shandong University , Jinan, China .,3 Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention , Jinan, China
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Li XF, Zhang Z, Li XD, Wang TB, Zhang HN. [Mechanism of the Piezo1 protein-induced apoptosis of the chondrocytes through the MAPK/ERK1/2 signal pathway]. Zhonghua Yi Xue Za Zhi 2017; 96:2472-7. [PMID: 27562045 DOI: 10.3760/cma.j.issn.0376-2491.2016.31.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To invstigate the mechanism of new mechanically-activated cation channel protein (Piezo1) can cause the apoptosis of the human chondrocytes under compressive loading, using a Flexercell unit by activating classical Mitogen-activated protein kinase (MAPK) signal pathyway(ERK1/2). METHODS Primary human chondrocytes were isolated, cultured, and then subjected to the static compressive loading for 0, 2, 12, 24, 48 h, respectively.The expressions of Piezo1 and the ERK1/2 were assessed by reverse transcription-polymerase chain reaction(PT-PCR), as well as the apoptosis gene B cell lymphoma/leukemia-2(Bcl-2) Bel-associated X protein(Bax). In addition, Piezo1inhibitor, Grammostola spatulata mechanotoxin 4(GsMTx4), was used to block Piezo1, served as a positive control.The immunofluorescence was used to locate the expression of Piezo1 protein and ERK1/2.AnnexinV-PI was used to detect the apoptosis of chondrocytes. RESULTS The expression of the Piezo1 in chondrocytesis was weak, the 12 h group was significant increased(0.198 1 vs 0.021 4, P<0.05), the 24 h group was the highest expression while the expression of the 48 h group was lower than the 24 h group, as well as the ERK1/2, Bcl-2 and caspase3.The result of AV-PI had shown that the 2 h group had increased early stage of apoptosis.The 12 h group had increased late stage of apoptosis, and the 24 h group's apoptotic rate was the highest, while the apoptotic rate of the 48 h group was lower than the 24 h group(0.497 1 vs 0.743 1, q=0.035 9). The GsMTx4 could inhibit the late stage of apoptosis, and the location of the Piezo1 was expressed in the nucleus and cytoplasm of the chondrocytes. CONCLUSIONS Piezo1 plays an important role in the apoptosis of the human chondrocyte through the classic MAPK/ERK1/2 signal pathway.
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Affiliation(s)
- X F Li
- Department of Joint Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
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Zhang YM, Liu ZH, Yang RJ, Li GL, Guo XL, Zhang HN, Zhang HM, Di R, Zhao QS, Zhang MC. Improvement of soybean transformation via Agrobacterium tumefaciens methods involving α-aminooxyacetic acid and sonication treatments enlightened by gene expression profile analysis. Plant Cell Rep 2016; 35:1259-71. [PMID: 26960402 DOI: 10.1007/s00299-016-1958-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 02/17/2016] [Indexed: 05/26/2023]
Abstract
KEY MESSAGE Antagonists and sonication treatment relieved the structural barriers of Agrobacterium entering into cells; hindered signal perception and transmission; alleviated defense responses and increased cell susceptibility to Agrobacterium infection. Soybean gene expression analysis was performed to elucidate the general response of soybean plant to Agrobacterium at an early stage of infection. Agrobacterium infection stimulated the PAMPs-triggered immunity (BRI1, BAK1, BZR1, FLS2 and EFR) and effector-triggered immunity (RPM1, RPS2, RPS5, RIN4, and PBS1); up-regulated the transcript factors (WRKY25, WRKY29, MEKK1P, MKK4/5P and MYC2) in MAPK pathway; strengthened the biosynthesis of flavonoid and isoflavonoid in the second metabolism; finally led to a fierce defense response of soybean to Agrobacterium infection and thereby lower transformation efficiency. To overcome it, antagonist α-aminooxyacetic acid (AOA) and sonication treatment along with Agrobacterium infection were applied. This novel method dramatically decreased the expression of genes coding for F3'H, HCT, β-glucosidase and IF7GT, etc., which are important for isoflavone biosynthesis or the interconversion of aglycones and glycon; genes coding for peroxidase, FLS2, PBS1 and transcription factor MYC2, etc., which are important components in plant-pathogen interaction; and genes coding for GPAT and α-L-fucosidase, which are important in polyesters formation in cell membrane and the degradation of fucose-containing glycoproteins and glycolipids on the external surface of cell membrane, respectively. This analysis implied that AOA and sonication treatment not only relieved the structural membrane barriers of Agrobacterium entering into cells, but also hindered the perception of 'invasion' signal on cell membrane and intercellular signal transmission, thus effectively alleviated the defense responses and increased the cell susceptibility to Agrobacterium infection. All these factors benefit the transformation process; other measures should also be further explored to improve soybean transformation.
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Affiliation(s)
- Yan-Min Zhang
- Institute of Genetics and Physiology, Plant Genetic Engineering Center of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050051, China
| | - Zi-Hui Liu
- Institute of Genetics and Physiology, Plant Genetic Engineering Center of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050051, China
| | - Rui-Juan Yang
- Institute of Genetics and Physiology, Plant Genetic Engineering Center of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050051, China
| | - Guo-Liang Li
- Institute of Genetics and Physiology, Plant Genetic Engineering Center of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050051, China
| | - Xiu-Lin Guo
- Institute of Genetics and Physiology, Plant Genetic Engineering Center of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050051, China
| | - Hua-Ning Zhang
- Institute of Genetics and Physiology, Plant Genetic Engineering Center of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050051, China
| | - Hong-Mei Zhang
- Institute of Genetics and Physiology, Plant Genetic Engineering Center of Hebei Province, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050051, China.
| | - Rui Di
- Institute of Food and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050035, China
| | - Qing-Song Zhao
- Institute of Food and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050035, China
| | - Meng-Chen Zhang
- Institute of Food and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050035, China.
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Niu L, Fu MY, Tian J, He XH, Zhang HN, Wang QW, Wang Y, Li CL, Wang ZZ, An XJ. [Phosphatase and tensin homolog deleted on chromosome ten/phosphatidyl Inositol 3-kinase/vascular endothelial growth factor signaling pathway changes in the rabbit Kawasaki disease model]. Zhonghua Xin Xue Guan Bing Za Zhi 2016; 44:250-4. [PMID: 26988681 DOI: 10.3760/cma.j.issn.0253-3758.2016.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To observe the changes of phosphatase and tensin homolog deleted on chromosome ten(PTEN)/ phosphatidyl Inositol 3-kinase(PI3K)/ vascular endothelial growth factor(VEGF)signaling pathway in a rabbit Kawasaki disease model. METHODS Model of Kawasaki disease was established in weanling Japanese big-eared rabbits with 10% bovine serum venous injection (2.5 ml/kg, 2 times, and 2 week's interval) through the ear. Twenty four rabbits were divided into 4 groups: control group (without injection of 10% bovine serum albumin, six rabbits); 1 day group (sacrificed a the second day after the establishment of Kawasaki disease models, six rabbits); 7 day group (sacrificed at the seventh day after establishment of Kawasaki disease model, six rabbits); 30 day group (sacrificed at the thirtieth day after establishment of Kawasaki disease model, six rabbits). Pathological analysis was performed on coronary artery tissue samples. The express of PTEN and PI3K were detected by immunohistochemistry. The levels of VEGF and CK were also examined with ELISA and white blood cells were counted. RESULTS (1) Coronary artery of model groups was thinner, distorted and had enlarged lumen. (2) PTEN expression in 1 d group, 7 d group and 30 d group were 58.5 ± 12.9, 73.2±9.9 and 109.6 ± 24.4, respectively, significantly higher than in the control group (25.5 ± 6.9, P<0.01 or 0.05). (3) The express of PI3K was significantly upregulated in 1 d group(57.2±11.1)and 7 d group(39.9±4.8) compared to control group(19.1±3.5, P<0.01 or 0.05). The expression level of PI3K in 30 d group was 18.8 ± 7.5, which was similar as control group (P>0.05) and significantly lower than 1 d and 7 d group (both P<0.05). (4) Similarly, the level of VEGF in 1 d group, 7 d group ((89.1 ± 15.5) ng/L, (76.9±9.9) ng/L) were significantly higher while it was significantly lower in 30 d group ((19.8 ± 4.4)ng/L) compared with the control group ((33.9 ± 6.7) ng/L, P<0.01 or 0.05). The level of VEGF in 7 d group was significantly lower than in 1 d group (P<0.05) and the level of VEGF was significantly lower in 30 d group than in 7 d group (P<0.01). (5)Creatine kinase levels were significantly higher in 30 d group than in control group (P<0.05) and there were no significantly different between control group, 1 d group and 7 d group(all P>0.05). (6)White blood cell count were significantly higher in 1 d group, 7 d group and 30 d group than in control group (all P<0.01). CONCLUSION The level of PTEN/PI3K/VEGF signaling pathway change after establishment of rabbit Kawasaki disease model and the signaling pathway might be involved in this model.
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Affiliation(s)
- L Niu
- Department of Cardiorascular, Children's Hospital of Xuzhou City, Xuzhou 221006, China
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Li HC, Zhang HN, Li GL, Liu ZH, Zhang YM, Zhang HM, Guo XL. Expression of maize heat shock transcription factor gene ZmHsf06 enhances the thermotolerance and drought-stress tolerance of transgenic Arabidopsis. Funct Plant Biol 2015; 42:1080-1091. [PMID: 32480747 DOI: 10.1071/fp15080] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 09/04/2015] [Indexed: 05/22/2023]
Abstract
Based on the information of 25 heat shock transcription factor (Hsf) homologues in maize according to a genome-wide analysis, ZmHsf06 was cloned from maize leaves and transformed into Arabidopsis thaliana (L. Heynh.) (ecotype, Col-0). Three transgenic positive lines were selected to assess the basic and acquired thermotolerance and drought-stress tolerance under stresses and for some physiological assays. The sequence analysis indicates that ZmHsf06 contained the characteristic domains of class A type plant Hsfs. The results of qRT-PCR showed that the expression levels of ZmHsf06 were elevated by heat shock and drought stress to different extents in three transgenic lines. Phenotypic observation shows that compared with the Wt (wild-type) controls, the overexpressing ZmHsf06 of Arabidopsis plants have enhanced basal and acquired thermotolerance, stronger drought-stress tolerance and growth advantages under mild heat stress conditions. These results are further confirmed by physiological and biochemical evidence that transgenic Arabidopsis plants exhibit higher seed germination rate, longer axial-root length, higher activities of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT), higher leaf chlorophyll content, but lower relative electrical conductivity (REC), malondialdehyde (MDA) and osmotic potential (OP) than the Wt controls after heat shock and drought treatments. ZmHsf06 may be a central representative of maize Hsfs and could be useful in molecular breeding of maize or other crops for enhanced tolerances, particularly during terminal heat and drought stresses.
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Affiliation(s)
- Hui-Cong Li
- Plant Genetic Engineering Center of Hebei Province/Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, PR China
| | - Hua-Ning Zhang
- Plant Genetic Engineering Center of Hebei Province/Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, PR China
| | - Guo-Liang Li
- Plant Genetic Engineering Center of Hebei Province/Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, PR China
| | - Zi-Hui Liu
- Plant Genetic Engineering Center of Hebei Province/Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, PR China
| | - Yan-Min Zhang
- Plant Genetic Engineering Center of Hebei Province/Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, PR China
| | - Hong-Mei Zhang
- Plant Genetic Engineering Center of Hebei Province/Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, PR China
| | - Xiu-Lin Guo
- Plant Genetic Engineering Center of Hebei Province/Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, PR China
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Zhang HN, Wang K, Yang J, Liu L. Efficacy and Safety of Human Insulin Versus Animal Insulin Among Patients with Diabetes in China: A Meta-Analysis. Value Health 2014; 17:A720. [PMID: 27202553 DOI: 10.1016/j.jval.2014.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- H N Zhang
- China Pharmaceutical University, Nanjing, China
| | - K Wang
- Eli Lilly Suzhou Pharmaceutical Co. Ltd., Shanghai, China
| | - J Yang
- Eli Lilly Suzhou Pharmaceutical Co. Ltd., Shanghai, China
| | - L Liu
- Eli Lilly Suzhou Pharmaceutical Co. Ltd., Shanghai, China
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Zhang HN, Chen XH, Wang QP, Zhang XY, Chang J, Gao L, Shen HB, Cong ZH, Liu ZJ, Tao XT, Li P. High-efficiency diode-pumped actively Q-switched ceramic Nd:YAG/BaWO₄ Raman laser operating at 1666 nm. Opt Lett 2014; 39:2649-2651. [PMID: 24784068 DOI: 10.1364/ol.39.002649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A diode-pumped actively Q-switched Raman laser employing BaWO4 as the Raman active medium and a ceramic Nd:YAG laser operating at 1444 nm as the pump source is demonstrated. The first-Stokes-Raman generation at 1666 nm is achieved. With a pump power of 20.3 W and pulse repetition frequency rate of 5 kHz, a maximum output power of 1.21 W is obtained, which is the highest output power for a 1.6 μm Raman laser. The corresponding optical-to-optical conversion efficiency is 6%; the pulse energy and peak power are 242 μJ and 8.96 kW, respectively.
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Zhang HN, Chen XH, Wang QP, Zhang XY, Chang J, Gao L, Shen HB, Cong ZH, Liu ZJ, Tao XT, Li P. High efficiency Nd:YAG ceramic eye-safe laser operating at 1442.8 nm. Opt Lett 2013; 38:3075-3077. [PMID: 24104652 DOI: 10.1364/ol.38.003075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report on a diode-pumped Nd:YAG ceramic laser operating at 1442.8 nm for the first time. In our experiment, two different Nd:YAG ceramics with the Nd-doped concentrations of 1.0 and 0.6 at. % and a Nd:YAG with the Nd-doped concentration of 1.0 at. % were used as the laser gain mediums, respectively. At a pump power of 20.7 W, a maximum output power of up to 3.96 W with optical-to-optical efficiency of up to 19.1% was obtained by using the 1.0 at. % Nd-doped ceramic as the laser gain medium. To the best of our knowledge, this is the highest output power of a LD-pumped 1.44 μm Nd:YAG ceramic laser and the highest optical-to-optical efficiency of a LD-pumped 1.44 μm Nd-doped crystal laser.
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Zhang HN, Ko MC. Seizure activity involved in the up-regulation of BDNF mRNA expression by activation of central mu opioid receptors. Neuroscience 2009; 161:301-10. [PMID: 19303919 DOI: 10.1016/j.neuroscience.2009.03.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2008] [Revised: 03/07/2009] [Accepted: 03/10/2009] [Indexed: 01/02/2023]
Abstract
Chemical-induced seizures up-regulated brain-derived neurotrophic factor (BDNF) mRNA expression. Intracerebroventricular (i.c.v.) administration of endogenous opioids preferentially activating mu opioid receptor (MOR) could also increase BDNF mRNA expression. The aim of this study was to determine to what extent i.c.v. administration of synthetic MOR-selective agonists in rats can modulate both seizure activity and up-regulation of BDNF mRNA expression. Effects and potencies of i.c.v. administration of morphine and [D-Ala(2), N-Me-Phe(4), Gly(5)-ol]-enkephalin (DAMGO), were directly investigated by scoring behavioral seizures and measuring BDNF mRNA expression. In addition, effects of the opioid receptor antagonist naloxone and antiepileptic drugs, diazepam, phenobarbital, and valproate, on i.c.v. MOR agonist-induced behavioral seizures and up-regulation of BDNF mRNA expression were determined. A single i.c.v. administration of morphine (10-100 microg) or DAMGO (0.15-1.5 microg) dose-dependently elicited behavioral seizures and increased BDNF mRNA expression in the widespread brain regions. However, s.c. administration of MOR agonists neither produced behavioral seizures nor increased BDNF mRNA expression. Pretreatment with naloxone 1 mg/kg significantly reduced behavioral seizure scores and the up-regulation of BDNF mRNA expression elicited by i.c.v. morphine or DAMGO. Similarly, diazepam 10 mg/kg and phenobarbital 40 mg/kg significantly blocked i.c.v. MOR agonist-induced actions. Pretreatment with valproate 300 mg/kg only attenuated behavioral seizures, but it did not affect morphine-induced increase of BDNF mRNA expression. This study provides supporting evidence that seizure activity plays an important role in the up-regulation of BDNF mRNA expression elicited by central MOR activation and that decreased inhibitory action of GABAergic system through the modulation on GABA receptor synaptic function by central MOR activation is involved in its regulation of BDNF mRNA expression.
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Affiliation(s)
- H N Zhang
- Department of Biomedical Engineering, College of Engineering, 1101 Beal Avenue, University of Michigan, Ann Arbor, MI 48109, USA
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Abstract
AIM: To identify tumor associated genes of rectal cancer and to probe the application possibility of gene expression profiles for the classification of tumors.
METHODS: Rectal cancer tissues and their paired normal mucosa were obtained from patients undergoing surgical resection of rectal cancer. Total RNA was extracted using Trizol reagents. First strand cDNA synthesis was indirectly labeled with aminoallyl-dUTP and coupled with Cy3 or Cy5 dye NHS mono-functional ester. After normalization to total spots, the genes which background subtracted intensity did not exceed 2 SD above the mean blank were excluded. The data were then sorted to obtain genes differentially expressed by ≥ 2 fold up or down in at least 5 of the 21 patients.
RESULTS: In the 21 rectal cancer patients, 23 genes were up-regulated in at least 5 samples and 15 genes were down-regulated in at least 5 patients. Hierachical cluster analysis classified the patients into two groups according to the clinicopathological stage, with one group being all above stage II and one group all below stage II.
CONCLUSION: The up-regulated genes and down-regulated genes may be molecular markers of rectal cancer. The expression profiles can be used for classification of rectal cancer.
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Affiliation(s)
- Xue-Qin Gao
- Key Laboratory for Biotech-Drug, Ministry of Health, Key Laboratory of Modern Drugs and Technology of Shandong Province, Shandong Medical and Biotechnology Center, Shandong Academy of Medical Sciences, Jinan 250062, Shandong Province, China
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Guo DD, Gao XQ, Han JX, Liu Y, Zhang HN. [Expression of recombinant human cytomegalovirus fusion proteins pp150/MDBP fragments and its application]. Sheng Wu Gong Cheng Xue Bao 2006; 22:956-61. [PMID: 17168319] [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: 05/13/2023]
Abstract
Human cytomegalovirus (HCMV) infection is an ubiquitous herpesvirus disease in human populations. It is rarely pathogenic to healthy adults, yet it may cause severe outcome to organ transplant recipients, the immunocompromised individuals and pregnant women. Using DNA from HCMV AD169 strain as template, the UL32 gene encoding pp150 protein fragment and the UL57 gene encoding MDBP protein fragment were amplified by PCR technique. After the construction of cloning vector pMD18-T-UL32, pMD18-T-UL57, pMD18-T-UL32/UL57 and expression vector pET-11a-UL32/UL57, the recombinant fusion proteins pp150/MDBP were induced with IPTG in BL21 host strain. The results showed that the relative molecular weight of recombinant fusion proteins pp150/MDBP is about 27 kD, the product of fusion proteins takes 17.45% in the total proteins in host bacteria, the analytical result was positive to the fusion proteins pp150/MDBP via Western blot technique, while the purified recombinant fusion proteins have strong antigenicity detected by ELISA and protein chip compared with whole virus antigens from HCMV. It was demonstrated that when used for the detection of serum from the clinical patients it has the same detection rate compared with the whole virus antigen. It needs further research for application.
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Affiliation(s)
- Da-Dong Guo
- Shandong Medicinal Biotechnology Center, Key Laboratory for Biotech-drugs of the Ministry of Health, China
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Zhang HN, Li XQ, Liang QH. [Analysis of corneal pathologic changes and laboratory parameters in herpes simplex karatitis patients with ganhuo-shangyanzheng or ganshengyinxuzheng]. Hunan Yi Ke Da Xue Xue Bao 2001; 26:31-2. [PMID: 12536609] [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: 02/28/2023]
Abstract
In order to investigate the relationship between Ganhuo shangyanzheng and Can-shengyin xuzheng in herpes simplex karatitis patients, we observed corneal pathologic changes and examined blood levels of prostaglandin F2 (PGF2), prostaglandin E2 (PGF2), tumor necrosis factor (TNF), arginine vasopressin (AVP), norepinephrine (NR), epinephrine (E) in sixty herpes simplex karatitis patients with Ganhou shangyanzheng or Gan-shengyinxuzheng. The results showed that the corneal pathologic changes were corneal ulcer infiltrating to stroma of cornea in Ganhuo shangyanzheng patients, and refractary corneal ulcer with large amount of corneal neovascularizaton and infiltration of corneal stroma in Gan-shengyinxuzheng patients, the blood levels of PGF2, PGE2, TNF, AVP, NE, E in Ganhuo shangyanzheng patients were higher than those in Gan-shengyinxuzheng patients or healthy persons. The results suggest that these parameters may be objective parameters for differential diagnosis of traditional Chinese medicine Zheng types in patients with herpes simplex karatitis.
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Affiliation(s)
- H N Zhang
- Institute of Combined Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha 410008
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