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Zhang RY, Zhang XS, Lu C, Wang ZR, Shi Y, Wang YG, Zhang P, Chen Y. TLR4-MyD88-NF-κB signaling imbalances Th17 and Treg cells in thymoma with myasthenia gravis. Eur Rev Med Pharmacol Sci 2023; 27:10342-10364. [PMID: 37975358 DOI: 10.26355/eurrev_202311_34309] [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: 11/19/2023]
Abstract
OBJECTIVE Thymus is an immune organ in which pathological changes may cause autoimmune diseases, including myasthenia gravis (MG). Recent studies have focused on Toll-like receptor 4 (TLR4) signaling as the cause of such changes. In our previous study, an imbalance of T helper 17 (Th17) cells and T regulatory (Treg) cells was found in MG thymoma. These results suggest the involvement of TLR4 in the pathogenesis of thymoma MG via an alteration of the Th17/Treg balance. Here, we aimed to assess whether the TLR4-MyD88-NF-κB pathway is upregulated in MG thymoma and its relationship with Th17/Treg cells. PATIENTS AND METHODS We collect thymoma samples from 54 patients with or without MG, detecting the expression level of TLR4, MyD88, and NF-κB in thymoma tissues. Next, we established an in vitro experiment of coculturing thymoma cells with CD4+ T cells and detected the differentiation of Th17 cells and Treg cells and their marker protein, retinoid-related orphan receptor gamma t (RORγt) and forkhead transcription factor 3 (Foxp3). RESULTS We found TLR4, MyD88, and NF-κB expressed more in MG thymoma compared with simple thymoma. After the transwell coculturing, we observed an imbalance of Th17/Treg cells after TLR4 stimulation. CONCLUSIONS TLR4 is stimulated in thymoma, causing an increase of Th17 cells and a decrease of Treg cells, namely an imbalance of Th17/Treg cells, resulting in MG.
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Affiliation(s)
- R-Y Zhang
- Department of Cardiothoracic Surgery, Tianjin Medical University General Hospital, Heping District, Tianjin, China.
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Xie R, Wang ZR, Zhu YT, Yu JH, Zhuo YH. [Research progress on the epidemiology and risk factors of dry eye in children]. Zhonghua Yan Ke Za Zhi 2023; 59:321-325. [PMID: 37012598 DOI: 10.3760/cma.j.cn112142-20220804-00379] [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: 04/05/2023]
Abstract
The prevalence of dry eye in children is increasing with changes in the environment and the widespread use of electronic products. However, due to poor ability to express themselves and hidden symptoms of children, lack of understanding of dry eye in children, children with dry eye are likely to be misdiagnosed. Dry eye can seriously affect the quality of children's learning, life, vision and visual development. Therefore, it is urgent to raise awareness of clinical workers about dry eye in children, prevent the occurrence of related complications of dry eye, and avoid permanent visual damage to children. This review discusses and summarizes the epidemiology and common risk factors of children with dry eye, with the aim of improving doctors' understanding of dry eye in children.
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Affiliation(s)
- R Xie
- Zhongshan Ophthalmic Center, SunYat-sen University, State Key Laboratory of Ophthalmology, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, China
| | - Z R Wang
- Zhongshan Ophthalmic Center, SunYat-sen University, State Key Laboratory of Ophthalmology, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, China
| | - Y T Zhu
- Zhongshan Ophthalmic Center, SunYat-sen University, State Key Laboratory of Ophthalmology, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, China
| | - J H Yu
- Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University (Foshan Maternity & Child Healthcare Hospital), Foshan 528000, China
| | - Y H Zhuo
- Zhongshan Ophthalmic Center, SunYat-sen University, State Key Laboratory of Ophthalmology, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, China
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Wang ZR, Li WY, Jiang HR, Jia XF, Huang FF, Hu X, Wang HJ, Zhang B, Wang ZH. [Epidemiological characteristics of cardio-metabolic risk factors among children and adolescents aged 7-17 years in 4 provinces of China]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:592-597. [PMID: 37147831 DOI: 10.3760/cma.j.cn112338-20220927-00814] [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: 05/07/2023]
Abstract
Objective: This study aimed to investigate the epidemiological characteristics of cardio-metabolic risk factors among children and adolescents aged 7-17 years in (Hebei, Zhejiang, Shaanxi, Hunan) 4 provinces of China and the influence of demographic and economic characteristics on them. Methods: A total of 1 747 children and adolescents aged 7-17 from a Community-based Cohort Study on Nervous System Disease in 2018 were selected. High waist circumference, central obesity, elevated TG, elevated TC, elevated LDL-C, decreased HDL-C, elevated blood pressure, elevated blood glucose, and clustering of risk factors was analyzed. χ2 test was used for univariate analysis, multivariate logistic regression was used to analyze the correlation between demographic and economic factors and risk factors, and the Cochran-Armitage trend test was used for trend analysis. Results: The detection rates of high waist circumference, decreased HDL-C, elevated blood pressure, elevated TG, elevated blood glucose, central obesity, elevated TC, and elevated LDL-C were 29.08%, 15.28%, 13.17%, 13.05%, 11.79%, 7.33%, 6.53%, and 5.15%, respectively. The rate of clustering of risk factors was 18.37%. Multivariate logistic regression analysis showed that the risk of high waist circumference in girls was higher than that in boys (OR=1.67, 95%CI: 1.26-2.22), and the risk of elevated blood glucose and clustering of risk factors was lower than that in boys (OR=0.69, 95%CI: 0.49-0.99; OR=0.72, 95%CI: 0.53-0.99). The risk of high waist circumference, decreased HDL-C, and clustering of risk factors in 13-17 years old group was higher than that in the 7-year-olds group (OR=2.24, 95%CI: 1.65-3.04; OR=1.59, 95%CI: 1.20-2.11; OR=1.75, 95%CI: 1.26-2.44), but the risk of central obesity was lower (OR=0.54, 95%CI: 0.37-0.78). The risk of elevated TC, elevated TG, and decreased HDL-C in children and adolescents in southern was higher than that in northern parts of China (OR=1.88, 95%CI: 1.25-2.83; OR=1.61, 95%CI: 1.17-2.22; OR=1.55, 95%CI: 1.19-2.04), but the risk of high waist circumference and central obesity was lower than that in northern China (OR=0.57, 95%CI: 0.43-0.75; OR=0.62, 95%CI: 0.42-0.90). The risk of decreased HDL-C in rural children and adolescents was higher than in urban children and adolescents (OR=1.36, 95%CI: 1.02-1.83). The risk of multiple risk factors increased with the increase in average monthly household income per capita and BMI level. Conclusions: High waist circumference, decreased HDL-C and elevated blood pressure were prominent cardio-metabolic risk factors among children and adolescents aged 7-17 years in 4 provinces of China in 2018. The region, average monthly household income per capita, and BMI were the main influencing factors of cardio-metabolic risk factors.
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Affiliation(s)
- Z R Wang
- National Institute for Nutrition and Heath, Chinese Center for Diseases Control and Prevention, Beijing 100050, China
| | - W Y Li
- National Institute for Nutrition and Heath, Chinese Center for Diseases Control and Prevention, Beijing 100050, China
| | - H R Jiang
- National Institute for Nutrition and Heath, Chinese Center for Diseases Control and Prevention, Beijing 100050, China
| | - X F Jia
- National Institute for Nutrition and Heath, Chinese Center for Diseases Control and Prevention, Beijing 100050, China
| | - F F Huang
- National Institute for Nutrition and Heath, Chinese Center for Diseases Control and Prevention, Beijing 100050, China
| | - X Hu
- National Institute for Nutrition and Heath, Chinese Center for Diseases Control and Prevention, Beijing 100050, China
| | - H J Wang
- National Institute for Nutrition and Heath, Chinese Center for Diseases Control and Prevention, Beijing 100050, China
| | - B Zhang
- National Institute for Nutrition and Heath, Chinese Center for Diseases Control and Prevention, Beijing 100050, China
| | - Z H Wang
- National Institute for Nutrition and Heath, Chinese Center for Diseases Control and Prevention, Beijing 100050, China
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Shi L, Wang ZR, Li TT, Linghu EQ, Wang FS. [Clinical research in cell therapy of liver diseases: progress and challenges]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:237-243. [PMID: 35462477 DOI: 10.3760/cma.j.cn501113-20220222-00083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The high incidence of chronic liver disease is a serious threat to public health, and the current comprehensive internal medicine treatment is ineffective. Liver transplantation is limited by the shortage of liver source and post-transplant rejection, and thus unmet the clinical needs. More importantly, cell therapy shows great promise for the treatment of chronic liver disease. Over recent years, domestic and foreign scholars have carried out a variety of cell therapy preclinical and clinical trials for critical liver disease, and achieved certain results, providing new methods for the treatment of chronic liver diseases. This review discusses the cell therapy research status and application progress, various existing problems and challenges, and key issues of mesenchymal stem cells in the treatment of chronic liver diseases.
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Affiliation(s)
- L Shi
- Department of Infectious Diseases, Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, 100039 Beijing, China
| | - Z R Wang
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China,230001 Hefei, China
| | - T T Li
- Department of Infectious Diseases, Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, 100039 Beijing, China Department of Gastroenterology, First Medical Center of Chinese PLA General Hospital,100853 Beijing, China
| | - E Q Linghu
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China,230001 Hefei, China
| | - F S Wang
- Department of Infectious Diseases, Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, 100039 Beijing, China
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Luo B, Ma L, Xing X, Wang ZR, Teng Q, Li SG. MiR-22-3p regulates the proliferation and invasion of Wilms' tumor cells by targeting AKT3. Eur Rev Med Pharmacol Sci 2021; 24:5996-6004. [PMID: 32572913 DOI: 10.26355/eurrev_202006_21493] [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: 11/12/2022]
Abstract
OBJECTIVE In this study, the regulatory mechanism of miR-22-3p/AKT3 in the development of Wilms' tumor (WT) was investigated. PATIENTS AND METHODS Twenty-seven pairs of surgical tumor specimens and adjacent normal tissues were obtained from Jining No. 1 People's Hospital. The expression level of miR-22-3p in WT tissues and cell lines was measured by quantitative RT-PCR. MTT and transwell assays were performed to analyze cell proliferation and invasion in WT. The relationship between miR-22-3p and AKT3 was verified by a Dual-Luciferase assay. The protein expression of AKT3 was evaluated by Western blotting analysis. RESULTS MiR-22-3p was downregulated and AKT3 was upregulated in WT. Functionally, overexpression of miR-22-3p inhibited cell proliferation and invasion in WT. Moreover, miR-22-3p directly targets AKT3. The knockdown of AKT3 suppressed cell proliferation and invasion in WT. In addition, upregulation of AKT3 restored the tumor suppressive effect of miR-22-3p in WT. CONCLUSIONS MiR-22-3p inhibits the proliferation and invasion of WT cells by downregulating AKT3, indicating that miR-22-3p may be developed as a new biomarker for the diagnosis of WT.
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Affiliation(s)
- B Luo
- Department of Urology, Songshan Hospital of Qingdao University, Qingdao, China.
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Feng C, Xiao L, Yu JC, Li DY, Tang TY, Liao W, Wang ZR, Lu AQ. Simvastatin promotes osteogenic differentiation of mesenchymal stem cells in rat model of osteoporosis through BMP-2/Smads signaling pathway. Eur Rev Med Pharmacol Sci 2021; 24:434-443. [PMID: 31957858 DOI: 10.26355/eurrev_202001_19943] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE By establishing osteoporosis (OP) model in rats, the specific regulatory effect of simvastatin on promoting the differentiation of mesenchymal stem cells (MSCs) into osteoblasts through the bone morphogenetic protein 2 (BMP-2)/Smads signaling pathway was investigated. MATERIALS AND METHODS A total of 45 Sprague-Dawley rats were selected to establish the OP model by performing ovariectomy. The rats were divided into OP model group (OP group, n=15), 10-7 mmol/L simvastatin treatment group (SIM group, n=15), and normal control group (Control group, n=15). After the experimental period, the enzyme-linked immunosorbent assay (ELISA) was applied to observe the serum levels of tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), and IL-1. Reverse Transcription-Polymerase Chain Reaction (RT-PCR) was adopted to detect the contents of the differentiation-associated genes [runt-related transcription factor 2 (RUNX2) and Osterix (Osx)]. Later, the bone marrow MSCs (BMSCs) were selected and divided into Control group, 10-7 mol/L simvastatin group (SIM group), and osteoinduction medium group (OM group). Cell morphology in each group was observed. The Cell Counting Kit-8 (CCK-8) was performed to determine the proliferation activity of BMSCs. ELISA was performed to measure the level of alkaline phosphatase (ALP). RT-PCR was conducted to examine the levels of key differentiation-associated gene RUNX2 and those in BMP-2/Smads pathway. Moreover, the Western blotting was adopted to analyze the expressions of RUNX2 and genes in BMP-2/Smads pathway. RESULTS The serum levels of TNF-α, IL-6, and IL-1 in OP group were remarkably higher than those in the Control group, and their levels in the SIM group were close to those in the Control group. The elevated messenger ribonucleic acid (mRNA) levels of the key differentiation-associated factors RUNX2, osteoprotegerin (OPG), osteopontin (OPN), and Osx were observed in the SIM group. In vitro cell culture revealed that the cells were in a favorable growth status in the SIM group and OM group, mostly manifesting in fusiform or spindle shape, and proliferated rapidly. In addition, the ALP level notably increased in the two groups compared with that in the Control group (p<0.05). Both SIM group and OM group had evidently higher mRNA expression levels of RUNX2, OPG, OPN, and Osx than those in the Control group (p<0.05), consistent with the expression trends of the genes in BMP-2/Smads pathway. The Western blotting indicated that the expression levels of RUNX2 and genes in BMP-2/Smads pathway in the SIM group were significantly higher than those in the Control group. CONCLUSIONS Simvastatin can promote the differentiation of MSCs into osteoblasts in the OP rat model through the BMP-2/Smads signaling pathway.
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Affiliation(s)
- C Feng
- Department of Orthopedics, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang, China.
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Zhang WJ, Guo SL, Yin G, Wang GS, Wang ZR, Dong J, Li QR. Association between TP53 polymorphisms and chronic lymphocytic leukemia. Eur Rev Med Pharmacol Sci 2020; 24:12073-12079. [PMID: 33336725 DOI: 10.26355/eurrev_202012_23996] [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: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to explore the association between TP53 gene polymorphisms (rs8068934 A>G and rs218698 C>T) and chronic lymphocytic leukemia (CLL). PATIENTS AND METHODS CLL patients who received treatment in our hospital were enrolled in this study as the disease group. Meanwhile, healthy subjects were taken as the control group. Peripheral blood samples were collected to detect TP53 gene polymorphisms at rs8068934 and rs218698, and the haplotype analysis was performed. The expression of TP53 was detected via reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Furthermore, the survival conditions were analyzed. RESULTS The allele distribution at rs8068934 (p=0.046) and rs218698 (p=0.028) of TP53 gene was different between control group and disease group. A allele frequency at rs8068934 and T allele frequency at rs218698 were significantly higher in disease group (p<0.05). The genotype distribution at rs218698 of TP53 gene in disease group was also different from that in control group (p=0.038). The results demonstrated that CC genotype frequency in disease group was significantly lower than that in control group (p<0.05). Besides, the distribution of dominant model at rs8068934 (p=0.042) and recessive model at rs218698 (p=0.033) in disease group exhibited remarkable differences from control group, in which AA+AG frequency (dominant model) at rs8068934 and CC+CT frequency (recessive model) at rs218698 in disease group were significantly higher. Meanwhile, the distribution of AT (p=0.029) and GC (p=0.007) haplotypes at rs8068934 and rs218698 in disease group was evidently different from that in control group. The results indicated that disease group showed significantly higher frequency of AT haplotype and lower frequency of GC haplotype (p<0.05). Moreover, TP53 gene polymorphisms at rs8068934 were significantly associated with the levels of white blood cells (WBC) (p=0.000) and platelets (PLT) (p=0.035). Patients with GG genotype had significantly higher level of WBC, while those with AG genotype showed significantly lower level of PLT (p<0.05). TP53 gene polymorphisms at rs218698 were associated with the level of red blood cells (RBC) (p=0.000). Patients with CT genotype had a remarkably lower level of RBC (p<0.05). There were significant correlations of TP53 gene polymorphisms at rs8068934 (p=0.000) and rs218698 (p=0.000) with the expression of TP53. The expression of TP53 was lower in people with AA genotype at rs8068934 but higher in people with TT genotype at rs218698 (p<0.05). Furthermore, TP53 gene polymorphisms at rs8068934 (p=0.000) and rs218698 (p=0.000) were markedly associated with patients' survival. CONCLUSIONS TP53 polymorphisms are significantly correlated with the occurrence and progression of CLL.
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Affiliation(s)
- W-J Zhang
- Department of Hematopathology, Yantaishan Hospital, Yantai, China.
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Chen L, Li XG, Wang JF, Hao RS, Xiang WY, Tan PF, Xia NN, Wang W, Wang ZR, Shen J. Potential effects of IL-17A rs2275913 and IL-17F rs763780 polymorphisms on susceptibility to gastric cancer in Chinese population: a meta-analysis. Eur Rev Med Pharmacol Sci 2020; 24:3633-3641. [PMID: 32329838 DOI: 10.26355/eurrev_202004_20825] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This meta-analysis aims to clarify the effect of IL-17 polymorphisms on the susceptibility to GCa in the Chinese population. MATERIALS AND METHODS Relevant pieces of literature were searched in PubMed, Web of School, VIP, and CNKI using the key words as "IL-17, gastric/stomach cancer" or "IL-17 polymorphisms, gastric/stomach cancer susceptibility". The odds ratio (OR) and 95% confidence interval (CI) in the selected studies were calculated using RevMan5.3 and STATA12.0. RESULTS A total of 12 investigations reporting mutations in IL-17A rs2275913 and IL-17F rs763780 were enrolled. There were 11 studies reporting rs2275913 G>A, involving 3299 cases of GCa patients and 3339 cases of healthy controls. The random-effects model was performed since the heterogeneity test results of the recessive genetic model (GG&GA vs. AA) and the allelic model (G vs. A) of IL-17A rs2275913 G>A were I2>66%/p=0.001. Meanwhile, the dominant genetic model (GG vs. GA&AA) and the super-dominant genetic model (GA vs. GG&AA) of IL-17A rs2275913 G>A were I2< 50%/p>0.05, and the fixed-effects model was used. The meta-analysis showed that IL-17A rs2275913 G>A was positively correlated with GCa susceptibility under four genetic models (p<0.05). Five studies reporting IL-17F rs763780 T>C were enrolled, including 2535 cases of GCa patients and 2402 cases of healthy controls. The heterogeneity test showed that, except for the super-dominant genetic model, the p-value was <0.00001 in the dominant, recessive, and allelic models, and their I2 values were 87%, 88%, and 93%, respectively. Hence, a random-effects model was selected. IL-17F rs763780 T>C was positively correlated with GCa susceptibility under the super-dominant genetic model (p=0.003), rather than the other three models (p>0.05). CONCLUSIONS IL-17A rs2275913 G>A polymorphism contributes to susceptibility to GCa in the dominant, recessive, allelic, and super-dominant models. Meanwhile, IL-17F rs763780 T>C polymorphism is positively correlated with GCa susceptibility in the super-dominant model.
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Affiliation(s)
- L Chen
- Department of Digestive Medicine, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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Wang ZR, Wang Q, Sui Y, Zhang ZL, Jia FJ, Fan J, Zhang ZJ. Dexamethasone alleviates allergic asthma immature rat through Toll like receptor 4. Eur Rev Med Pharmacol Sci 2019; 22:184-189. [PMID: 29364486 DOI: 10.26355/eurrev_201801_14116] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The allergic asthma model induced by ovalbumin (OVA) was established in the immature rat. Dexamethasone (DXM) was adopted for intervention to analyze the treatment effect and to explore the relationship with toll-like receptor 4 (TLR4). MATERIALS AND METHODS Immature SD rat was treated by OVA to construct allergic asthma model and intervened by DXM. The rats were randomly divided into model group, experimental group, and control group. The changes in lung tissue were observed by light microscope. The EOS infiltration and reactivity of airway wall were compared. The expressions of TLR2 and TLR4 protein and mRNA in the lung tissue were tested by Western blot and RT-PCR. RESULTS The lung tissue in the model group was infiltrated by a lot of inflammatory cells, and mucous membrane edema was observed, compared with that in the control group. There were only a few inflammatory cells in the interstitial tissue and pulmonary alveoli in the experimental group compared with that in the model group. EOS count of airway wall and airway reactivity decreased in the experimental group. The levels of TLR2 and TLR4 were significantly elevated in the third week compared with the first week (p<0.05). CONCLUSIONS The treatment of DXM can alleviate the pathological changes of the lung tissue in SD immature rat with allergic asthma, reduce EOS infiltration in the airway wall, decrease airway reactivity, and elevate expressions of TLR2 and TLR4.
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Affiliation(s)
- Z-R Wang
- Department of Pediatrics, Dezhou Pepole's Hospital, Dezhou, Shandong, China.
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Yang SM, Park JK, Na YS, Wang ZR, Ko WH, In Y, Lee JH, Lee KD, Kim SK. Nonambipolar Transport due to Electrons with 3D Resistive Response in the KSTAR Tokamak. Phys Rev Lett 2019; 123:095001. [PMID: 31524439 DOI: 10.1103/physrevlett.123.095001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 07/19/2019] [Indexed: 06/10/2023]
Abstract
A small nonaxisymmetric (3D) magnetic field can induce nonambipolar transport of the particle species confined in a tokamak and thus a significant change of plasma rotation. This process can be in a favor of instability control in the region where the tokamak plasma is sufficiently collisional and resistive, as observed in the applications of n=1 resonant magnetic perturbations to the KSTAR tokamak. The plasma rotation can be globally accelerated due to radially drifting electrons and constrained to the electron root, if the radial transport is enhanced by an amplified 3D response. This mechanism is verified by a kinetically self-consistent magnetohydrodynamic modeling for both response and transport, which offers the quantitative explanations on the internal n=1 structure detected by electron-cyclotron-emission imaging and the cocurrent plasma spinning observed in the experiments.
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Affiliation(s)
- S M Yang
- Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - J-K Park
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA
| | - Yong-Su Na
- Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Z R Wang
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA
| | - W H Ko
- National Fusion Research Institue, Daejeon 305-333, Republic of Korea
| | - Y In
- Ulsan National Institute of Science and Technology, Ulsan 689-798, Republic of Korea
| | - J H Lee
- National Fusion Research Institue, Daejeon 305-333, Republic of Korea
| | - K D Lee
- National Fusion Research Institue, Daejeon 305-333, Republic of Korea
| | - S K Kim
- Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea
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Wang ZR, Ren LM, Li R, Guan X, Han QM, Liu ML, Shao M, Zhang X, Chen S, Li ZG. [Analysis of 20-year survival rate and prognostic indicators of systemic lupus erythematosus]. Zhonghua Yi Xue Za Zhi 2019; 99:178-182. [PMID: 30669759 DOI: 10.3760/cma.j.issn.0376-2491.2019.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Objective: To analyze the 20-year survival rate, causes of death and predictors of systemic lupus erythematosus (SLE). Methods: A retrospective analysis was performed on 217 newly SLE patients who were diagnosed and treated by Peking University People's Hospital before June 2008. The clinical features and serologic data were studied. Survival rate of SLE patients over time, living conditions, causes of death and prognostic indicators of mortality were studied. Results: The 10-, 15-and 20-year cumulative survival rate was 90.3%,88.1%and 79.6%, respectively. Infection and lupus encephalopathy were the main causes of death. Cox regression analysis revealed that lupus nephritis, neuropsychiatric systemic lupus erythematosus and age at the diagnosis were independent risk determinants for mortality. Conclusion: Prognosis of SLE remains to be improved. Early diagnosis, control of SLE organ damage and infection prevention are critical to improve survival of SLE patients.
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Affiliation(s)
- Z R Wang
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing100044, China
| | - L M Ren
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing100044, China
| | - R Li
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing100044, China
| | - X Guan
- Department of Rheumatology and Immunology, Tong Liao City Hospital, Tongliao 028000, China
| | - Q M Han
- Department of Rheumatology and Immunology, First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - M L Liu
- Department of Rheumatology and Immunology, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - M Shao
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing100044, China
| | - X Zhang
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing100044, China
| | - S Chen
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing100044, China
| | - Z G Li
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing100044, China
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Lyu HX, Wang ZR, Gao YQ, Yu M, Li BQ, Zhang ZB. [Clinical pathologic analysis on 3 724 cases of salivary gland tumors]. Zhonghua Kou Qiang Yi Xue Za Zhi 2019; 54:10-16. [PMID: 30630253 DOI: 10.3760/cma.j.issn.1002-0098.2019.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the incidence and proportion of salivary gland tumors in order to provide new thinking for clinical diagnosis and treatment. Methods: Collected 3 724 cases salivary gland tumors diagnosed by Pathology Department of Hospital of Stomatology, Jilin University from January 1961 to December 2016. The pathological diagnosis referred to the fourth edition of head and neck-salivary gland tumor histopathological classification standard of WHO. The database was established with Microsoft Excel and analyzed with SPSS 18.0. Made a retrospective analysis and comparison on the numbers of all cases in terms of types, site, gender and age and estimate the trend with the time interval of 8 years, and then make a judgement of the trend of salivary tumors. Results: The benign tumors were more common than the malignant among all periods, the proportion of all tumors was about 2.92∶1; The top three benign tumors were polymorphous adenoma [73.78% (2 046/2 773)], Warthin tumor [15.80% (438/2 773)] and base cell adenoma [8.37% (232/2 773)]. Polymorphous adenoma took up 54.94% (2 046/3 724) of all tumors. The top three malignant tumors were mucous epidermoid carcinoma [31.44% (299/951)], adenoid cystic carcinoma [26.92% (256/951)] and adenocarcinoma [11.88% (113/951)]. As for sex, male female ratio was 0.83∶1. As for site, the pathogenic site of tumors was mainly in parotid gland [63.75% (2 374/3 724)], followed by palatal gland [16.50% (615/3 724)], then submandibular gland [12.67% (472/3 724)]; As for age, the common age was between 51 and 60 years old [23.74% (884/3 724)], followed by 41 to 50 years old [21.56%(803/3 724)]. Conclusions: The incidence of benign and malignant salivary gland tumor increased in the 56 years. Females showed a higher incidence. The majority tumors occurred in parotid gland. The most common salivary gland tumor was pleomorphic adenoma and the most common malignant tumor was mucous epidermoid carcinoma. The most common age was in 51-60 years old period.
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Affiliation(s)
- H X Lyu
- Department of Pathology, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Z R Wang
- Department of Pathology, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Y Q Gao
- Department of Pathology, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - M Yu
- Department of Pathology, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - B Q Li
- Department of TMD, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Z B Zhang
- Department of Pathology, Hospital of Stomatology, Jilin University, Changchun 130021, China
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Munaretto S, Strait EJ, Lanctot MJ, Wang ZR. Conceptual design of extended magnetic probe set to improve 3D field detection in NSTX-U. Rev Sci Instrum 2018; 89:10J108. [PMID: 30399860 DOI: 10.1063/1.5036942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 05/24/2018] [Indexed: 06/08/2023]
Abstract
Adding toroidal arrays of magnetic probes at the top and bottom of NSTX-U would improve both the detection of the multimodal plasma response to applied magnetic perturbations and the identification of the poloidal structure of unstable plasma modes, as well as contribute to the validation of MHD models, improve the understanding of the plasma response to external fields, and improve the error field correction. In this paper, the linear MHD code MARS-F/K has been used to identify poloidal locations that would improve the capability to measure stationary or near-stationary 3D fields that may result from the plasma response to external sources of non-axisymmetric fields. The study highlighted 6 poloidal positions where new arrays of both poloidal and radial magnetic field sensors would improve the poloidal resolution. The proposed set of new arrays combined with the present ones is shown to be capable of measuring the poloidal structure of perturbations with n ≤ 6 and of detecting the multimodal plasma response. Assessment of the trade-off in the poloidal length of the probes leads to an ideal length between 10 cm and 30 cm. A method to configure the probes of a toroidal array based on the singular value decomposition condition number is proposed, and an ideal solution and a low-cost one are presented.
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Affiliation(s)
- S Munaretto
- General Atomics, San Diego, California 92121, USA
| | - E J Strait
- General Atomics, San Diego, California 92121, USA
| | - M J Lanctot
- General Atomics, San Diego, California 92121, USA
| | - Z R Wang
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA
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Zhang R, Jiang H, Wang ZR, Lin P, Zhuo Y, Holcomb D, Zhang DH, Yang JJ, Xia Q. Nanoscale diffusive memristor crossbars as physical unclonable functions. Nanoscale 2018; 10:2721-2726. [PMID: 29419836 DOI: 10.1039/c7nr06561b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Physical unclonable functions have emerged as promising hardware security primitives for device authentication and key generation in the era of the Internet of Things. Herein, we report novel physical unclonable functions built upon the crossbars of nanoscale diffusive memristors that translate the stochastic distribution of Ag clusters in a SiO2 matrix into a random binary bitmap that serves as a device fingerprint. The random dispersion of Ag led to an uneven number of clusters at each cross-point, which in turn resulted in a stochastic ability to switch in the Ag:SiO2 diffusive memristors in an array. The randomness of the dispersion was a barrier to fingerprint cloning and the unique fingerprints of each device were persistent after fabrication. Using an optimized fabrication procedure, we maximized the randomness and achieved an inter-class Hamming distance of 50.68%. We also discovered that the bits were not flipping after over 104 s at 400 K, suggesting superior reliability of our physical unclonable functions. In addition, our diffusive memristor-based physical unclonable functions were easy to fabricate and did not require complicated post-processing for digitization and thus, provide new opportunities in hardware security applications.
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Affiliation(s)
- R Zhang
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, 300072, China.
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15
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Liu L, Zhang L, Li HM, Wang ZR, Xie XF, Mei JP, Jin JL, Shi J, Sun L, Li SC, Tan YL, Yang L, Wang J, Yang HM, Qian QJ, Wang YF. The SNP-set based association study identifies ITGA1 as a susceptibility gene of attention-deficit/hyperactivity disorder in Han Chinese. Transl Psychiatry 2017; 7:e1201. [PMID: 28809852 PMCID: PMC5611725 DOI: 10.1038/tp.2017.156] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/20/2017] [Accepted: 06/07/2017] [Indexed: 01/02/2023] Open
Abstract
Genome-wide association studies, which detect the association between single-nucleotide polymorphisms (SNPs) and disease susceptibility, have been extensively applied to study attention-deficit/hyperactivity disorder (ADHD), but genome-wide significant associations have not been found yet. Genetic heterogeneity and insufficient genomic coverage may account for the missing heritability. We performed a two-stage association study for ADHD in the Han Chinese population. In the discovery stage, 1033 ADHD patients and 950 healthy controls were genotyped using both the Affymetrix Genome-Wide Human SNP Array 6.0 and the Illumina Infinium HumanExome BeadChip. The genotyped SNPs were combined to generate a powerful SNP set with better genomic coverage especially for the nonsynonymous variants. In addition to the association of single SNPs, we collected adjacent SNPs as SNP sets, which were determined by either genes or successive sliding windows, to evaluate their synergetic effect. The candidate susceptibility SNPs were further replicated in an independent cohort of 1441 ADHD patients and 1447 healthy controls. No genome-wide significant SNPs or gene-based SNP sets were found to be associated with ADHD. However, two continuous sliding windows located in ITGA1 (P-value=8.33E-7 and P-value=8.43E-7) were genome-wide significant. The quantitative trait analyses also demonstrated their association with ADHD core symptoms and executive functions. The association was further validated by follow-up replications for four selected SNPs: rs1979398 (P-value=2.64E-6), rs16880453 (P-value=3.58E-4), rs1531545 (P-value=7.62E-4) and rs4074793 (P-value=2.03E-4). Our results suggest that genetic variants in ITGA1 may be involved in the etiology of ADHD and the SNP-set based analysis is a promising strategy for the detection of underlying genetic risk factors.
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Affiliation(s)
- L Liu
- Department of Child Psychiatry, Peking University Sixth Hospital/Institute of Mental Health, Beijing, China,National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - L Zhang
- BGI Genomics, BGI-Shenzhen, Shenzhen, China,Department of Computer Science, City University of Hong Kong, Hong Kong, China,Department of Computer Science, Stanford University, Stanford, CA, USA
| | - H M Li
- Department of Child Psychiatry, Peking University Sixth Hospital/Institute of Mental Health, Beijing, China,National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - Z R Wang
- Psychiatry Research Center, Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - X F Xie
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - J P Mei
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - J L Jin
- Department of Child Psychiatry, Peking University Sixth Hospital/Institute of Mental Health, Beijing, China,National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - J Shi
- Psychiatry Research Center, Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - L Sun
- Department of Child Psychiatry, Peking University Sixth Hospital/Institute of Mental Health, Beijing, China,National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - S C Li
- Department of Computer Science, City University of Hong Kong, Hong Kong, China
| | - Y L Tan
- Psychiatry Research Center, Beijing HuiLongGuan Hospital, Peking University, Beijing, China
| | - L Yang
- Department of Child Psychiatry, Peking University Sixth Hospital/Institute of Mental Health, Beijing, China,National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - J Wang
- BGI Genomics, BGI-Shenzhen, Shenzhen, China,James D. Watson Institute of Genome Sciences, Hangzhou, China
| | - H M Yang
- BGI Genomics, BGI-Shenzhen, Shenzhen, China,James D. Watson Institute of Genome Sciences, Hangzhou, China
| | - Q J Qian
- Department of Child Psychiatry, Peking University Sixth Hospital/Institute of Mental Health, Beijing, China,National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China,Peking University Sixth Hospital/Institute of Mental Health, No. 51, Hua Yuan Bei Lu, Haidian Disrtrict, Beijing 100191, China. E-mail: or
| | - Y F Wang
- Department of Child Psychiatry, Peking University Sixth Hospital/Institute of Mental Health, Beijing, China,National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China,Peking University Sixth Hospital/Institute of Mental Health, No. 51, Hua Yuan Bei Lu, Haidian Disrtrict, Beijing 100191, China. E-mail: or
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16
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Xu HD, You CG, Zhang RL, Gao P, Wang ZR. Effects of Astragalus Polysaccharides and Astragalosides on the Phagocytosis of Mycobacterium tuberculosis by Macrophages. J Int Med Res 2016; 35:84-90. [PMID: 17408058 DOI: 10.1177/147323000703500108] [Citation(s) in RCA: 28] [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: 11/16/2022] Open
Abstract
The herb Astragalus membranaceus is used in traditional Chinese medicine to boost immunity. This study investigated the effects of Astragalus polysaccharides (APS) and astragalosides (AS) on the phagocytosis of Mycobacterium tuberculosis by macrophages. Peritoneal macrophages were obtained by peritoneal lavage from mice stimulated by starch gravy culture medium and cultured with M. tuberculosis and varying concentrations of APS and AS. Phagocytotic activity was measured using a real-time polymerase chain reaction assay to detect M. tuberculosis DNA. Levels of interleukin-1β, interleukin-6 and tumour necrosis factor-α secreted by activated macrophages in the culture supernatant were determined using an enzyme-linked immunosorbent assay. Macrophage phagocytotic activity and secreted cytokine levels were significantly increased after treatment with APS and AS. This study provides evidence that APS and AS have strong promoting effects on the phagocytosis of M. tuberculosis by macrophages and the secretion of interleukin-1β, interleukin-6 and tumour necrosis factor-α by activated macrophages.
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Affiliation(s)
- H D Xu
- School of Life Science, Lanzhou University, Lanzhou, China
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17
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Wang ZR, Lanctot MJ, Liu YQ, Park JK, Menard JE. Three-dimensional drift kinetic response of high-β plasmas in the DIII-D tokamak. Phys Rev Lett 2015; 114:145005. [PMID: 25910133 DOI: 10.1103/physrevlett.114.145005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Indexed: 06/04/2023]
Abstract
A quantitative interpretation of the experimentally measured high-pressure plasma response to externally applied three-dimensional (3D) magnetic field perturbations, across the no-wall Troyon β limit, is achieved. The self-consistent inclusion of the drift kinetic effects in magnetohydrodynamic (MHD) modeling [Y. Q. Liu et al., Phys. Plasmas 15, 112503 (2008)] successfully resolves an outstanding issue of the ideal MHD model, which significantly overpredicts the plasma-induced field amplification near the no-wall limit, as compared to experiments. The model leads to quantitative agreement not only for the measured field amplitude and toroidal phase but also for the measured internal 3D displacement of the plasma. The results can be important to the prediction of the reliable plasma behavior in advanced fusion devices, such as ITER [K. Ikeda, Nucl. Fusion 47, S1 (2007)].
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Affiliation(s)
- Z R Wang
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA
| | - M J Lanctot
- General Atomics, PO Box 85608, San Diego, California 92186-5608, USA
| | - Y Q Liu
- Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
| | - J-K Park
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA
| | - J E Menard
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA
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18
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Li WH, Chang L, Xia YX, Wang L, Liu YY, Wang YH, Jiang Z, Xiao J, Wang ZR. Knockdown of PTTG1 inhibits the growth and invasion of lung adenocarcinoma cells through regulation of TGFB1/SMAD3 signaling. Int J Immunopathol Pharmacol 2015; 28:45-52. [PMID: 25816405 DOI: 10.1177/0306419015572073] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Increased expression of pituitary tumor-transforming gene 1 (PTTG1) is expressed in many tumors and regulates tumor growth and progression. However, the precise function of PTTG1 in the tumorigenesis of lung adenocarcinoma (LAC) is not defined yet. Here, we examined the expression of PTTG1 in human LAC tissues by immunohistochemical assay using a tissue microarray procedure. A loss-of-function experiment was carried out to investigate the effects of lentiviral vector-mediated PTTG1 shRNA (shPTTG1) on cell growth and invasive potential in LAC cell lines (A549 and LETPα-2), assessed by MTT and Transwell assays. As a consequence, we found that the expression of PTTG1 protein was markedly upregulated in LAC tissues compared with the adjacent non-cancerous tissues (ANCT) (54.0% vs. 28.0%, P = 0.008), and was positively associated with the lymphatic invasion of the tumor ( P = 0.01). Moreover, knockdown of PTTG1 expression inhibited tumor proliferation and invasion of LAC cells, companied by the decreased expression of CyclinD1 and MMP-2 and increased expression of p-TGFβ1 and p-SMAD3. Collectively, our findings indicate that high expression of PTTG1 is correlated with the tumor metastasis of LAC patients, and knockdown of PTTG1 suppresses the growth and invasion of LAC cells through upregulation of the TGFβ1/SMAD3 signaling, suggesting that PTTG1 may be a potential target for developing an effective immunotherapeutic strategy for LAC.
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Affiliation(s)
- W-H Li
- Health Ministry Key Laboratory of Chronobiology, College of Basic Medicine and Forensic Medicine, Sichuan University, Chengdu, PR China
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University, Tumor Hospital of Yunnan Province, Kunming, PR China
| | - L Chang
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University, Tumor Hospital of Yunnan Province, Kunming, PR China
| | - Y-X Xia
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University, Tumor Hospital of Yunnan Province, Kunming, PR China
| | - L Wang
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University, Tumor Hospital of Yunnan Province, Kunming, PR China
| | - Y-Y Liu
- Health Ministry Key Laboratory of Chronobiology, College of Basic Medicine and Forensic Medicine, Sichuan University, Chengdu, PR China
| | - Y-H Wang
- Health Ministry Key Laboratory of Chronobiology, College of Basic Medicine and Forensic Medicine, Sichuan University, Chengdu, PR China
| | - Z Jiang
- Health Ministry Key Laboratory of Chronobiology, College of Basic Medicine and Forensic Medicine, Sichuan University, Chengdu, PR China
| | - J Xiao
- Health Ministry Key Laboratory of Chronobiology, College of Basic Medicine and Forensic Medicine, Sichuan University, Chengdu, PR China
| | - Z-R Wang
- Health Ministry Key Laboratory of Chronobiology, College of Basic Medicine and Forensic Medicine, Sichuan University, Chengdu, PR China
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Chen XR, Xing YP, Zhang TX, Zheng JT, Xu JY, Wang ZR, Tong YH. First Report of Pestalotiopsis sydowiana Causing Leaf Necrosis of Myrica rubra in China. Plant Dis 2012; 96:764. [PMID: 30727544 DOI: 10.1094/pdis-01-12-0065-pdn] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Red bayberry (Myrica rubra Seib. & Zucc.) has great economic importance in eastern and southern China. However, increasing cultivation of red bayberry has resulted in an increase in diseases such as leaf necrosis. In April 2011, a survey was conducted to identify the causal agents of leaf necrosis of red bayberry (cv. Biqi) in Cixi City, Zhejiang Province. Symptoms began with oval and pale brown lesions (2 mm in diameter) that developed into a round to irregular shape (4 to 12 mm in diameter) with pale brown centers and dark brown borders. After approximately 4 months, necrotic lesions expanded to the leaf tips or margins. Black acervuli developed on lesions at later stages. Leaf tissues were surface sterilized with 0.5% sodium hypochlorite for 3 min and rinsed in sterile water before plating onto potato dextrose agar (PDA). Seven isolates were obtained from four samples from four fields on PDA at 25°C. The colonies were cottony white with filiform edges and produced a honey yellow color into the agar at 7 days. Conidia were produced in ink-like fruiting bodies at 4 days at 25°C on PDA. Conidia were straight or slightly curved, fusiform, and five celled with constrictions at the septa. Conidia ranged from 18.7 to 25.8 × 6.2 to 7.7 μm with hyaline apical and basal cells. Thirteen percent of the apical cells had two and the rest had three hyaline appendages ranging from 11.2 to 26.0 μm long. Basal appendages were hyaline, straight, and varied from 3.6 to 5.8 μm long. The color of three median cells was light to dark brown and demonstrated versicolorous. These morphological characteristics matched those of Pestalotiopsis sydowiana (Bresadola) Sutton (1). The morphological identification of the fungus was confirmed by nucleotide blast analysis of the 5.8S subunit and flanking internal transcribed spacers (ITS1 and ITS2) of rDNA regions (GenBank Accession No. JQ322999), which revealed 100% with those of other P. sydowiana isolates (e.g., GenBank Accession No. FJ478105). Koch's postulates were confirmed with 20 healthy leaves of the same size on three branches of three plants in the field. Leaves were wounded by pressing slightly with sterile needles. Mycelial plugs (5 mm in diameter) obtained from the periphery of 7-day-old cultures were placed onto the wounds and covered with sterile-water-saturated cotton. Wounded leaves treated with sterile agar plugs served as controls. The inoculated leaves were sealed in moist plastic bags for 24 h to establish high humid conditions at 21 to 30°C. After 23 days, symptoms on all inoculated leaves were identical to those described above, whereas noninoculated control leaves did not show any symptoms. The fungus was consistently reisolated from the lesions. To our knowledge, this is the first report of P. sydowiana causing leaf necrosis of M. rubra in China. Results can help to better understand the diseases threatening red bayberry trees and develop effective control strategies for better fruit production. Reference: (1) E. F. Guba. Monograph of Monochaetia and Pestalotia. Harvard University Press, Cambridge, MA, 1961.
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Affiliation(s)
- X R Chen
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Y P Xing
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - T X Zhang
- Ningbo Technology Extension Center for Forestry and Specialty Forest Products, Ningbo 315010, China
| | - J T Zheng
- Ningbo Technology Extension Center for Forestry and Specialty Forest Products, Ningbo 315010, China
| | - J Y Xu
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China. This study is supported by Jiangsu Province Basic Research Program (Natural Science Foundation) (BK2011443) and Major Project of Ningbo City, Zhejiang Province for Science and Technology Development (2009C10004)
| | - Z R Wang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China. This study is supported by Jiangsu Province Basic Research Program (Natural Science Foundation) (BK2011443) and Major Project of Ningbo City, Zhejiang Province for Science and Technology Development (2009C10004)
| | - Y H Tong
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China. This study is supported by Jiangsu Province Basic Research Program (Natural Science Foundation) (BK2011443) and Major Project of Ningbo City, Zhejiang Province for Science and Technology Development (2009C10004)
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Peng Y, Wang ZR, Alsayed AM, Yodh AG, Han Y. Melting of multilayer colloidal crystals confined between two walls. Phys Rev E Stat Nonlin Soft Matter Phys 2011; 83:011404. [PMID: 21405695 DOI: 10.1103/physreve.83.011404] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Indexed: 05/30/2023]
Abstract
Video microscopy is employed to study the melting behaviors of multilayer colloidal crystals composed of diameter-tunable microgel spheres confined between two walls. We systematically explore film thickness effects on the melting process and on the phase behaviors of single crystal and polycrystalline films. Thick films (>4 layers) are observed to melt heterogeneously, while thin films (≤4 layers) melt homogeneously, even for polycrystalline films. Grain-boundary melting dominates other types of melting processes in polycrystalline films thicker than 12 layers. The heterogeneous melting from dislocations is found to coexist with grain-boundary melting in films between 5- and 12-layers. In dislocation melting, liquid nucleates at dislocations and forms lakelike domains embedded in the larger crystalline matrix; the "lakes" are observed to diffuse, interact, merge with each other, and eventually merge with large strips of liquid melted from grain boundaries. Thin film melting is qualitatively different: thin films homogeneously melt by generating many small defects which need not nucleate at grain boundaries or dislocations. For three- and four-layer thin films, different layers are observed to have the same melting point, but surface layers melt faster than bulk layers. Within our resolution, two- to four-layer films appear to melt in one step, while monolayers melt in two steps with an intermediate hexatic phase.
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Affiliation(s)
- Y Peng
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
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21
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Liu QF, Wang X, Yuan Q, Liu YY, Lu R, Wang YH, Jiang Z, Wang ZR. RACK1, a potential target to decrease morphine reward in mice. Arch Ital Biol 2009; 147:131-140. [PMID: 20162862] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Morphine reexposure induces the decrease of receptor for activated C-kinase 1 protein (RACK1) levels in frontal cortex, and the increase of p-ERK (extracellular signal-regulated kinase) levels in mouse frontal cortex, striatum, hippocampus and nucleus accumbens (NAcc). Moreover, RACK1 is associated with the core kinases of the ERK pathway, Raf, MEK, and ERK. The purpose of this study is to investigate the effect of overexpression of RACK1 on the conditioned place preference (CPP) and the level of p-ERK in morphine reexposure mice. Mice were subcutaneously injected with morphine on the 2nd, 4th, 6th, and the 8th day, saline was delivered the next day. After mice showed place preference, RACK1 was administered by intraventricular injection 20 minutes after injection of morphine on the 11th, 13th, 15th, and 17th day. CPP was measured on the 18th day. It was found that morphine reexposured mice showed a decreased RACK1 level in the frontal cortex, striatum and an increased RACK1 level in hippocampus and NAcc, but this effect was reversed after administration of RACK1. In this study we demonstrated that RACK1 decreased p-ERK and erased CPP during reexposure of morphine and there was no an effect in reexposure saline mice. It strongly suggests that RACK1 may play a crucial role in morphine reexposured mice and the RACK1 has the potential to be a remedy to the morphine reward.
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Affiliation(s)
- Q F Liu
- Key Laboratory of Chronobiology, Ministry of Health (Sichuan University), Sichuan University, Chengdu, China
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Abstract
1. A broiler experiment was conducted to assess the effectiveness of L-lysine.H2SO4 relative to L-lysine.HCl. Four concentrations of L-lysine.H2SO4 and L-lysine.HCl (0.9, 1.8, 2.7 and 3.6 g/kg diet) were each added to a basal diet that met the nutrient requirements of broilers except for lysine. 2. Birds responded significantly to the supplements in daily gain, feed intake, feed conversion efficiency, nitrogen retention and plasma urea nitrogen during each period (d 4 to 21, d 22 to 42 and d 4 to 42). 3. Regression analysis showed that the bioefficacy of L-lysine.H2SO4 relative to L-lysine.HCl was 0.93, 0.86 and 0.95 for daily gain, feed conversion efficiency and nitrogen retention, respectively, during the starter period (d 4 to 21), and was 1.01, 1.36 and 1.06, respectively, during the grower period (d 22 to 42). It was 0.99, 1.07 and 1.03, respectively, for the overall period (d 4 to 42), when the bioefficacy of L-lysine.HCl was set at 1.0. 4. The bioefficacy of L-lysine.H2SO4 differed with different response criteria. The average bioavailability of L-lysine.H2SO4 relative to L-lysine.HCl was 1.03 on an equimolar basis in the present study. In conclusion, L-lysine.H2SO4 and L-lysine.HCl are equally efficacious to broiler chickens.
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Affiliation(s)
- Z R Wang
- China Agricultural University, Ministry of Agriculture Feed Industry Centre, China Agricultural University, Beijing, China
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Yang YX, Yang AH, Yang ZJ, Wang ZR, Xia XH. Involvement of tumor suppressor in lung cancer 1 gene expression in cervical carcinogenesis. Int J Gynecol Cancer 2006; 16:1868-72. [PMID: 17009984 DOI: 10.1111/j.1525-1438.2006.00656.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Tumor suppressor in lung cancer 1 (TSLC1) is a tumor suppressor gene in non-small cell lung cancer, and loss of TSLC1 gene expression has been observed in a number of epithelial carcinomas and cancer-derived cell lines. We analyzed TSLC1 gene expression by real-time reverse transcription-polymerase chain reaction in 39 invasive cervical carcinomas, 34 cervical intraepithelial neoplasia (CIN) IIIs, 35 CIN IIs, 32 CIN I, 36 inflammation cervical tissues, and 30 normal cervix samples. Loss of TSLC1 gene expression was observed in 30 of 39 (77%) cervical carcinomas, 25 of 34 (73%) CIN IIIs, 9 of 35 (26%) CIN IIs, and 7 of 32 (22%) CIN Is but was not found in inflammation and normal cervix samples. Compared to normal cervical tissue, loss of TSLC1 gene was significantly high in CIN IIIs and cervical cancer (P = 0.00). Moreover, loss of TSLC1 gene expression is observed at a significantly higher frequency in CIN IIIs and cervical cancers than in CIN IIs (P < 0.05). The results show that loss of TSLC1 gene expression is an early event in cervical carcinogenesis and often accompanies invasive cervical cancers.
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Affiliation(s)
- Y-X Yang
- Department of Obstetrics and Gynecology, First Hospital of Lanzhou University, Lanzhou, China
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Wang ZR, Qiao SY, Lu WQ, Li DF. Effects of enzyme supplementation on performance, nutrient digestibility, gastrointestinal morphology, and volatile fatty acid profiles in the hindgut of broilers fed wheat-based diets. Poult Sci 2005; 84:875-81. [PMID: 15971523 DOI: 10.1093/ps/84.6.875] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.9] [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: 11/14/2022] Open
Abstract
A growth trial and a metabolism trial were conducted as 2 experiments to investigate the effects of dietary enzyme supplementation (primarily xylanase and beta-glucanase) on performance, nutrient digestibility, intestinal morphology, digestive organ size, and volatile fatty acid profiles in the hindgut of broiler chickens fed wheat-based diets. The experimental diets in both trials consisted of a wheat-based control diet supplemented with 0, 200, 400, 600, 800, or 1,000 mg/kg enzyme. Diets were given to the birds from d 7 to 42 of age. In the growth trial, enzyme supplementation improved performance of the broilers; daily gain and feed conversion increased linearly (P < 0.01) with increasing levels of enzyme supplementation. Enzyme inclusion decreased the size of the digestive organs and the gastrointestinal tract to some extent. The relative length of each intestinal segment decreased linearly (P < 0.05). The relative weight of the anterior intestine on d 21 and ileum on d 42 also decreased linearly (P < 0.01). On d 21 and 42, there were negative linear (P < 0.05) relationships between increasing enzyme supplementation and the relative weight of the liver and pancreas, respectively. Furthermore, there was a linear (P < 0.01) increase in total volatile fatty acid content in ileum on d 21 and in the cecum on d 21 and 42. During each period of the metabolism trial, apparent crude protein digestibility increased linearly (P < 0.05), whereas no differences were detected (P > 0.05) in AME.
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Affiliation(s)
- Z R Wang
- National Feed Engineering Technology Research Center, China Agricultural University, Beijing, China, 100094
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Chen LG, Wang ZR, Wan CM, Xiao J, Guo L, Guo HL, Cornélissen G, Halberg F. Circadian renal rhythms influenced by implanted encapsulated hANP-producing cells in Goldblatt hypertensive rats. Gene Ther 2004; 11:1515-22. [PMID: 15284836 DOI: 10.1038/sj.gt.3302330] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/09/2022]
Abstract
Renal excretion in experimental hypertensive rats implanted with encapsulated human atrial natriuretic peptide (hANP)-producing cells is circadian periodic. Chinese hamster ovary (CHO) cells transfected with the plasmid hANP-cDNA were encapsulated in biocompatible polycaprolactone capsules for intraperitoneal implantation into two-kidney, one-clip (2K1C) hypertensive rats. During a 12:12 light-dark cycle, as compared to control CHO cells, the implantation of encapsulated hANP-producing CHO cells was associated with an increase in the net excretion of water, sodium and potassium, and with a reversal of the advanced circadian phases related to renovascular hypertension in 2K1C rats. The increase in blood pressure postimplantation was delayed, and increases in renal blood flow, glomerular filtration rate, sodium output, urinary excretion and urinary cyclic GMP concentrations were also found. Implantation of encapsulated hANP-producing cells affects circadian rhythms in kidney excretion functions of 2K1C rats, and may be useful for the treatment of cardiovascular disease.
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Affiliation(s)
- L G Chen
- Department of Biomedical Engineering, School of Basic and Forensic Medicine, Sichuan University, Chengdu, PR China
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Zhang M, Ma SP, Wang ZR. [Effect of qidan tongmai tablet on glucose and lipid metabolism in patients with diabetes mellitus type 2]. Zhongguo Zhong Xi Yi Jie He Za Zhi 2001; 21:825-7. [PMID: 12575375] [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
OBJECTIVE To study the effect of Qidan Tongmai tablet (QDTMT) on glucose and lipid metabolism in patients with diabetes mellitus (DM) type 2. METHODS Patients of DM, with or without hyperlipidemia complication (HLC) were divided into 4 groups, Group A (33 cases without HLC) and B (33 cases with HLC) were treated by QDTMT, Group C (31 cases without HLC) and D (31 cases with HLC) were not treated by QDTMT. The treatment was carried out on the previous basic hypoglycemic treatment with a therapeutic course of 2 months. RESULTS The levels of fasting glucose, 2 hrs postprandial blood glucose and glycosylated hemoglobin, as well as the levels of total cholesterol and triglyceride lowered, and the high density lipoprotein increased in Group A and B after treatment, as compared with those before treatment, the difference was significant (P < 0.01). While in Group C and D, the above-mentioned indexes were not changed significantly (P > 0.05). No apparent side-effect was found in the QDTMT treatment period. CONCLUSION Besides regulating abnormal blood lipid, QDTMT has also a hypoglycemic effect in certain degree in patients with DM type 2.
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Affiliation(s)
- M Zhang
- Xijing Hospital, Fourth Military Medical University, Xi'an 710033
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27
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Affiliation(s)
- J S Shi
- The WJG Press, P.O. Box 2345, Beijing 100023,China.
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Li DG, Wang ZR, Lu HM. Pharmacology of tetrandrine and its therapeutic use in digestive diseases. World J Gastroenterol 2001; 7:627-9. [PMID: 11819843 PMCID: PMC4695563 DOI: 10.3748/wjg.v7.i5.627] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2001] [Revised: 05/14/2001] [Accepted: 05/16/2001] [Indexed: 02/06/2023] Open
Affiliation(s)
- D G Li
- Department of Gastroenterology, Xinhua Hospital, Shanghai Second Medical University, Shanghai 200092,China
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Wu JM, Wang ZR, Hsieh TC, Bruder JL, Zou JG, Huang YZ. Mechanism of cardioprotection by resveratrol, a phenolic antioxidant present in red wine (Review). Int J Mol Med 2001; 8:3-17. [PMID: 11408943 DOI: 10.3892/ijmm.8.1.3] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.4] [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: 11/06/2022] Open
Abstract
Coronary heart disease (CHD) has been and remains a major contributor to morbidity and mortality in developed countries. The most common form of CHD in the western world is atherosclerosis (AS), especially of the major coronary arteries. Failure to maintain an intact endothelium, as a result of episodic and/or persistent injury and perturbation of the vascular endothelium, promotes formation of fatty streaks which are considered initiation events of AS. Cellular constituents contributing to endothelial injury include endothelial cells, monocytes, platelets, and smooth muscle cells. Individuals diagnosed with AS face complex, enduring clinical complications and enormous medical costs. Simple and easily compliant prevention and treatment measures are therefore strategic considerations in the management of this vascular disease. Based on known risk factors for CHD, priorities in AS prevention should include smoking cessation, blood pressure control, and diet modification. In recent years, the possible benefits of low to moderate consumption of alcoholic beverages, particularly of red wine, in the prevention of heart disease has received increasing attention and debate in the popular media as well as in the scientific community. Such attention has been prompted by research findings supporting a relationship between red wine consumption and the French paradox. This phenomenon refers to people residing in certain parts of France where red wine is customarily consumed during meals having a low CHD mortality, despite living a lifestyle considered to have comparably high CHD risks, as those in the US and many other developed countries. Studies have reported that the cardioprotective effects of red wine are greater than those attributed solely to ethanol and other types of alcoholic beverages. The mechanism(s) underlying the greater CHD protective benefits of red wine have not been elucidated. Recently the polyphenol resveratrol (3,5,4'-trihydroxy-trans-stilbene), known to be abundantly present in red wine, compared to white wine, beer, or spirits, has been demonstrated to elicit a broad spectrum of biological responses in in vitro and in animal studies, including effects that are compatible with the cardioprotective roles proposed for red wine. These recently described effects of resveratrol will be reviewed in this article. We will first summarize published data showing an inverse association between consumption of alcoholic beverages/red wine and risk of CHD. A review of biosynthesis of resveratrol and its presence in food groups and wines will follow. Recent studies relating exposure to wine/resveratrol with reduction in myocardial damage during ischemia-reperfusion, modulation of vascular cell functions, inhibition of LDL oxidation, and suppression of platelet aggregation will be presented. The last section of this review will focus on a discussion of mechanism(s) by which resveratrol acts as a potential cardioprotective agent.
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Affiliation(s)
- J M Wu
- New York Medical College, Room 147, Department of Biochemistry and Molecular Biology, Basic Sciences Building, Valhalla, NY 10595, USA.
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Zhao ZC, Zhou MD, Luo DZ, Hou X, Wang ZR, Shen GK, Li FL, Cao JX. [Genetic diversity of Fagoyrum tataricum cultivated in north Liangshan Prefecture of Yi Nationality, Sichuan, China]. Yi Chuan Xue Bao 2001; 27:1084-93. [PMID: 11209701] [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: 02/19/2023]
Abstract
In the present paper is stated the accomplishment of the studies of 17 populations of cultivated Fagopyrum tataricum (L.) Gaertn. from the counties of Yuexi and Ganluo in North Liangshan Autonomous Prefecture of Yi Nationality, Sichuan Province, China by means of starch gel electrophoresis and cluster analysis of agrobiology features. Seven enzymes, and 15 loci were assessed. The result shows that the genetic diversity of F. tataricum within population is higher than in the South Prefecture and in species F. esculentum from other areas. The A, P, Ho and He are 1.9, 52.1%, 0.190 and 0.262 respectively. The FST is 0.199 which is close to the average level of wild plants. A conservation strategy of the genetic resource of F. tataricum is suggested. Two populations of local variety "Youchiqiao" have the richest genetic diversity, P = 60.0%, Ho = 0.260 and 0.301 and they should be protected particularly. Two populations of local variety "Xiaomiqiao" with higher genetic diversity, as well as three populations of local varieties of "Qiukuqiao", "Equkuqiao" and "Geluokuqiao" with special genetic position should be protected too.
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Affiliation(s)
- Z C Zhao
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
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31
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Zhao ZC, Zhou MD, Luo DZ, Hou X, Wang ZR, Shen GK, Li FL, Cao JX. [Genetic diversity and differentiation of cultivated Fagoyrum tataricum populations from three counties in south Liangshan Automomous Prefecture of Yi Nationality, Sichuan, China]. Yi Chuan Xue Bao 2001; 27:538-48. [PMID: 11057051] [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: 02/18/2023]
Abstract
Genetic diversity and differentiation among 8 cultivated populations of Fagopyrum tataricum from the counties of Jinyang, Leibo and Miyi in south Liangshan Autonomous Prefecture of Yi Nationality, Sichuan Province, China were investigated using allozyme electrophoresis. The allozymic diversity is roughly correlated with agrobiological features. The results suggest that genetic diversity of F. tataricum is quite high. The mean number of alleles per locus A is 1.8; the percentage of polymorphic loci P is 46.6%, and the mean observed heterozygosities Ho and the mean expected heterozygosities He are 0.187 and 0.218 respectively, the ratios of gene diversities of heterozygosities Fsr is 0.22, which indicates that there is 22 percent of genetic differentiation among populations, and suggests that for protecting genetic resources all the populations should be included in.
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Affiliation(s)
- Z C Zhao
- Chengdu Institute of Biology, Chinese Academy of Sciences, China
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Abstract
AIM: To examine the expression of activin A, a member of the transforming growth factor (TGF-β) superfamily, recently has been reported to beoverexpressed in liver cirrhosis, in the course of carbon tetrachloride-induced rat hepatic fibrosis.
METHODS: Hepatic fibrosis was induced in rats by subcutaneous injections of 40% carbon tetrachloride oily solution for a period of 1 to 7 weeks. At the end of 1, 2, 3, 4, 5, 6 and 7 weeks after carbon tetrachloride injections, the rats were killed in group (6-10 rats each time) for study. The activin A messenger RNA expression and its protein localization were assessed by semi-quantitative reverse transcription polymerase chain reaction (RT-PCR) and immunohistochemistry.
RESULTS: The normal rat liver expressed activin A mRNA and protein, and its expression was transiently decreased and became undetectable after carbon tetrachloride injections for 2 or 3 weeks and then increased gradually. After injection of carbon tetrachloride for 6 and 7 weeks, activin A mRNA and protein expressions were significantly enchanced in rat liver. Compared with that of the normal rat liver. Activin A mRNA expression levels in rats receiving carbon tetrachloride injections for 6 and 7 weeks were 1.6 and 2.2 times that of those in normal rat liver respectively (0.456 ± 0.094 vs 0.286 ± 0.0670, P < 0.01; 0.620 ± 0.134 vs 0.286 ± 0.0670, P < 0.01). Immunohistochemistry showed that activin A expressed in hepatocytes of normal liver, and its expression was decreased in rats receiving carbon tetrachloride for 2 or 3 weeks. Compared with normal liver, activin A expression distribution mode changed in fibrotic liver, being increased significantly in hepatocytes around fibrotic areas.
CONCLUSION: Activin A expression was increased in late stage of hepatic fibrosis, and this may be involved in hepatic fibrosis formation in this period.
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Affiliation(s)
- X Huang
- Gastroenterology Department, Xinhua Hospital, Shanghai Second Medical University, Shanghai 200092, China
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Lu B, Wang ZR, Yang H. Long-acting delivery microspheres of levo-norgestrol-poly(3-hydroxybutyrate): their preparation, characterization and contraceptive tests on mice. J Microencapsul 2001; 18:55-64. [PMID: 11201341 DOI: 10.1080/026520401750038601] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [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: 10/17/2022]
Abstract
The preparative technology for sustained release drug delivery microspheres of levo-norgestrol-poly(3-hydroxybutyrate) was optimized based on the in-liquid-drying method. The formation of the drug microspheres was confirmed with differential thermal analysis. The appearance, particle size and distribution, residual CHCl3, drug content, drug release characteristics in vitro, stability and anticonceptive effect on mice of the microspheres were all examined. The average particle size was 64 microm with over 90% of the microspheres being in the range of 28.7-85.8 microm. The residual CHCl3 was lower than 0.001%. The drug release behaviour in vitro could be described by the Higuchi equation and the drug release t1/2 was prolonged by 1.8 times, compared with the original drug LNG. The microspheres were stable for 3 months and showed significant sustained release and anticonceptive effect in mice, and lower toxicity compared with the original drug.
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Affiliation(s)
- B Lu
- School of Pharmacy, West China University of Medical Sciences, Chengdu.
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Wang ZR, Wang L, Yin HH, Yang FJ, Gao YQ, Zhang ZJ. Effect of total flavonoids of hippophae rhamnoides on contractile mechanics and calcium transfer in stretched myocyte. Space Med Med Eng (Beijing) 2000; 13:6-9. [PMID: 12212626] [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: 02/26/2023]
Abstract
OBJECTIVE To study the role of total flavonoids of hippophae rhamnoides in improving contractile [correction of contactile] function of stretched cardiac myocyte. METHOD Flavonoids were given to stretched myocytes which were proved their contractile function decline and then myocyte contractile mechanics characteristics and calcium transfer were measured. RESULT Flavonoids increased myocyte contractility, as indicated by myocyte shortening, velocity of shortening, peak +dL/dt and peak -dL/dt during shortening, in a concentration-dependent manner (r>0.9, P<0.001), and with no relation to the intracellular calcium transfer in the myocytes. CONCLUSION Flavonoids of the traditional Chinese drug hippophae rhamnoides is effective in improving the contractile function of stretched cardiac myocyte in low dosage.
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Affiliation(s)
- Z R Wang
- School of Basic Medical Sciences, West China University of Medical Sciences, Chengdu
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Wang ZR, Wang L, Wan CM, Cornelissen G, Anand I, Halberg F. Circadian rhythm of gene expression of myocardial contractile protein, left ventricular pressure and contractility. Space Med Med Eng (Beijing) 1999; 12:391-6. [PMID: 12432879] [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: 02/27/2023]
Abstract
Objective. A number of cardiovascular variables exhibit a circadian rhythm. Whether myocardial contractile response and gene expression of the contractile protein also show changes with a similar period was here investigated. Method. Circadian variabilities in the left ventricular developed pressure (LVP) and contractility (LV dp/dt max) were measured in 24 Sprague-Dawley rats by directly left ventricular catheterizing and compared with changes in the gene expression of alpha-myosin heavy chain (alpha-MHC) in myocytes obtained from the same animals by dot blotting analysis. Results. A circadian rhythm was seen in the variability of LVP (P<0.001), LV dp/dt max (P<0.001) and the biochemically measured expression of the alpha-MHC gene (P<0.01). As compared to the amplitude of the rhythm in alpha-MHC gene expression, the amplitude of the contractility rhythm was large (P<0.01) and the circadian amplitude of the LVP (P<0.001) was the largest, representing perhaps a composite of intracardiac plus any extracardiac contributions. Conclusion. One of factors determining the circadian rhythm of myocardial contractile function is alpha-MHC gene expression level.
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Affiliation(s)
- Z R Wang
- Biomedical Engineering Department, West China University of Medical Sciences, Chengdu, P.R. China
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Williams JA, Wang ZR, Parrish RS, Hazlett LJ, Smith ST, Young SR. Fluorescence in situ hybridization analysis of HER-2/neu, c-myc, and p53 in endometrial cancer. Exp Mol Pathol 1999; 67:135-43. [PMID: 10600396 DOI: 10.1006/exmp.1999.2289] [Citation(s) in RCA: 25] [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: 11/22/2022]
Abstract
Our objective was to evaluate the association between HER-2/neu, c-myc, p53, and clinicopathologic variables in endometrial cancer using fluorescence in situ hybridization (FISH) cytogenetic analysis. FISH analysis for HER-2/neu, c-myc, and p53 was performed on 47 endometrial cancer specimens. Amplification of HER-2/neu was seen in 4/47 (8.5%) cases and amplification of c-myc was seen in 7 of 47 (15%) cases; neither was associated with adverse clinicopathologic variables or survival. Deletion of p53 was seen in 31/47 (66%) cases and was associated with poor histologic grade (P = 0.008). There was no impact of genetic alterations on overall survival or disease-free interval. Grade 3 tumor was associated with poor overall survival (P = 0.032). This study found that p53 deletion is a common genetic alteration in endometrial cancer and is associated with poor-grade tumors.
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Affiliation(s)
- J A Williams
- Department of Obstetrics and Gynecology, University of South Carolina School of Medicine, Columbia 29203, USA
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Abstract
Forty tumor specimens from patients with ovarian cancer were studied for amplification of the c-myc oncogene relative to chromosome 8 centromere number using dual-color FISH. Interphase cytogenetic analysis showed amplification of the c-myc oncogene in 40% (16/40) of tumors using the standard oncogene:centromere ratio method of analysis. Eleven of these showed moderate amplification of c-myc, and 5 samples showed high amplification. Eight of the sixteen (50%) amplified tumors were polysomic centromere 8 as were 14 of the 24 (58%) non-amplified tumors. In previously reported work with these samples, the oncogene HER-2/neu, the chromosome 17 centromere, and the tumor suppressor gene p53 had been studied. When using the standard oncogene:centromere ratio criteria, 5 samples had amplification of both the c-myc and the HER-2/neu oncogenes, 5 samples had HER-2/neu amplification but not c-myc, 11 samples had c-myc amplification but not HER-2/neu, and 19 samples had neither oncogene amplified. The p53 gene was found to be deleted in 22.5% (9/40) of samples. The loss of the p53 gene did not appear to have any clinical correlation. The presence of an extra centromere 8 also did not appear to have any clinical correlation. The Kaplan-Meier survival curve for those patients who have c-myc amplification, while not statistically significant, appears to show a trend toward poorer survival. The survival curve for patients whose tumors have HER-2/neu amplification shows no clinical significance. It is of great interest, however, that the Kaplan-Meier plot of survival for patients whose tumors have amplification of both c-myc and HER-2/neu shows a significant difference (P = 0.047). The median survival times of the doubly amplified patient group and the non-doubly amplified groups were 12 and 43 months, respectively. This is the first study of the oncogene c-myc using FISH. The results suggest that the amplification of c-myc may indicate a poorer patient survival and that the amplification of both c-myc and HER-2/neu in combination may be a better prognostic indicator of poor patient survival.
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Affiliation(s)
- Z R Wang
- Department of Obstetrics and Gynecology, University of South Carolina School of Medicine
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Wang ZR, Johnston DC, Miller LL, Vaknin D. Static magnetization and ac susceptibility measurements of the copper-oxygen cluster compound BaCuO2+x. Phys Rev B Condens Matter 1995; 52:7384-7394. [PMID: 9979683 DOI: 10.1103/physrevb.52.7384] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Zhang Z, Gao RB, Xu YQ, Wang ZR, Xu JM. [An observation on the pacemaker current I(f) in sheep cardiac Purkinje fibers under ischemia-mimic condition]. Sheng Li Xue Bao 1995; 47:209-17. [PMID: 7570104] [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: 01/26/2023]
Abstract
Effects of "ischemia" and adrenergic agonists on pacemaker current I(f) were observed in sheep cardiac Purkinje fibers. After perfusion with ischemia-mimic solution for 15, 30 and 60 min, the amplitude of I(f) current were decreased at all membrane potential levels between Ec-60 mV to -120 mV (n = 7, P < 0.05), activation time and half activation time to a steady state value of I(f) current were prolonged (n = 7, P < 0.05), activation curve of I(f) shifted to a more hyperpolarized position. Isoproterenol 1 x 10(-6) mol/L increased amplitude of I(f) current (n = 10, P < 0.05), shortened the activation time and half activation time (n = 10, P > 0.05), and shifted the activation curve to a more depolarized position; but isoproterenol of 1 x 10(-6) mol/L could not completely reverse the inhibitory effects of "ischemia" on I(f) current. In the presence of 5 x 10(-7) mol/L propranolol the effects of phenylephrine 5 x 10(-5) mol/L on I(f) current was variable; but aggravated the inhibitory effects of I(f) current due to "ischemia". The above results indicate that normal pacemaker activity of ventricular Purkinje fibers does not increase but rather decrease during myocardial ischemia-mimic condition, an observation suggesting that acute ischemic ventricular arrhythmia may not be due to abnormal strengthening of normal ventricular pacemaker activity.
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Affiliation(s)
- Z Zhang
- Department of Physiology, Shanghai Second Medical University
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40
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Ami T, Crawford MK, Harlow RL, Wang ZR, Johnston DC, Huang Q, Erwin RW. Magnetic susceptibility and low-temperature structure of the linear chain cuprate Sr2CuO3. Phys Rev B Condens Matter 1995; 51:5994-6001. [PMID: 9979515 DOI: 10.1103/physrevb.51.5994] [Citation(s) in RCA: 82] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Wang ZR, Meyer RL. [The refinement of retinotectal projection on tectal whole mount during the regeneration of the goldfish optic nerve labeled with DiI anterogradely]. Shi Yan Sheng Wu Xue Bao 1994; 27:143-51. [PMID: 7976053] [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: 01/28/2023]
Abstract
The refinement of retinotectal projection during the regeneration of the goldfish optic nerve was studied with microinjection of the lipophilic dye DiI (1,1-dioctadecyl-3,-3,-3',-3',-tetramethylindo-carbocyanine perchlorate) into the dorsal retina to label a few of retinal ganglion cells, which could be transported anterogradely to their terminal arbors on the tectum. The regenerated optic nerve fibers on the tectal whole mount were examined at various time intervals (from 7 to 365 days) following an optic nerve crush. At the early regeneration stage (2 to 8 weeks postcrush), the regenerated optic fibers travelled in abnormal paths through both appropriate ventral and inappropriate dorsal hemitecta, but the majority of the fibers (about 60% to 70%) were found in the appropriate ventral hemitectum. At the late regeneration stage (2 months afterward postcrush), after refinement of regenerated optic fibers, the retinotectal projection was reestablished preciously as in the normal fish. Present study shows that the refinement of the retinotectal projection manifests in three major changes: 1) The disappearance of the regenerated optic fibers at the inappropriate tectal positions; 2) The disappearance of the side branches on the optic fiber shaft; 3) The formation of overlapping terminal arbors by the optic fibers that arrived at the retinotopic target. These results suggest that there may be two kinds of factors in the tectum: One is a common guiding factor which distributes over all the tectum and guides the regenerated optic fibers growing into the tectum at early regeneration; another is a position-specific neurotrophic factor which guides the regenerated optic fibers arriving at the retinotopic target at late regeneration.
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Affiliation(s)
- Z R Wang
- Department of Biology, Lanzhou University
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42
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Wang ZR, Wang XL, Fernandez-Baca JA, Johnston DC, Vaknin D. Antiferromagnetic Ordering and Paramagnetic Behavior of Ferromagnetic Cu
6
and Cu
18
Clusters in BaCuO
2+
x. Science 1994; 264:402-4. [PMID: 17836901 DOI: 10.1126/science.264.5157.402] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Magnetization and neutron diffraction measurements on polycrystalline BaCuO2+x revealed a combination of magnetic behaviors. The Cu(6) ring clusters and Cu(18) sphere clusters in this compound had ferromagnetic ground states with large spins 3 and 9, respectively. The Cu(6) rings ordered antiferromagnetically below the Néel temperature T(N) = 15 +/- 0.5 kelvin, whereas the Cu(18) spheres remained paramagnetic down to 2 kelvin. The ordered moment below T(N) was 0.89(5) Bohr magnetons per Cu in the Cu(6) rings, demonstrating that quantum fluctuation effects are small in these atomic clusters. The Cu(18) clusters are predicted to exhibit ferromagnetic intercluster order below about 1 kelvin.
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43
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Crawford MK, Subramanian MA, Harlow RL, Fernandez-Baca JA, Wang ZR, Johnston DC. Structural and magnetic studies of Sr2IrO4. Phys Rev B Condens Matter 1994; 49:9198-9201. [PMID: 10009706 DOI: 10.1103/physrevb.49.9198] [Citation(s) in RCA: 163] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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44
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Huang PH, Jin SZ, Peng ZC, Liang RY, Lu ZJ, Wang ZR, Chen JB, Yuan ZX. ESR dating of tooth enamel: comparison with U-series, FT and TL dating at the Peking man site. Appl Radiat Isot 1993; 44:239-42. [PMID: 8472017 DOI: 10.1016/0969-8043(93)90226-z] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Deer tooth samples from Zhoukoudian, the Peking Man Cave, were studied. Non-linear fitting is used to determine AD, from which ESR ages were calculated by both the disequilibria model (DU) and linear uptake model (LU). Comparison of ESR ages with those from U-series, FT and TL methods show that the enamel of deer teeth is a suitable material for ESR dating.
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Affiliation(s)
- P H Huang
- Department of Earth and Space Sciences, University of Science and Technology of China, Academia Sinica, Heifei
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45
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Wang ZR, Aihara K, Kobayashi H. [Vascular endothelium and vasomotion]. Sheng Li Ke Xue Jin Zhan 1991; 22:259-61. [PMID: 1947988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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46
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Wang XR, Szmidt AE, Lewandowski A, Wang ZR. Evolutionary analysis of Pinus densata Masters, a putative Tertiary hybrid : 1. Allozyme variation. Theor Appl Genet 1990; 80:635-640. [PMID: 24221070 DOI: 10.1007/bf00224223] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/1990] [Accepted: 05/03/1990] [Indexed: 06/02/2023]
Abstract
Allozyme differentiation at 13 loci was studied in populations of Pinus tabulaeformis, P. densata, and P. yunnanensis from China. It was previously suggested that P. densata represents a Tertiary hybrid between P. tabulaeformis and P. yunnanensis. The observed levels of allozyme variation within and among the investigated species were comparable to those of other conifers. P. tabulaeformis differed markedly from P. yunnanensis with respect to allozyme frequencies, while P. densata was intermediate between the two putative parents. There was evidence of homozygote excess in embryos from all investigated species, as compared to Hardy-Weinberg expectations. The observed allozyme composition of P. densata conformed to earlier morphological and molecular evidence indicating hybrid origin of this taxon. It was proposed that fusion of gene pools from P. tabulaeformis and P. yunnanensis has led to adaptive evolution of a new species, P. densata.
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Affiliation(s)
- X R Wang
- Institute of Forest Genetics and Plant Physiology, The Swedish University of Agricultural Sciences, S-90183, Umeå, Sweden
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47
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Wang ZR. [Secretion of human embryonic atrial specific granules (SG) in culture]. Zhonghua Bing Li Xue Za Zhi 1990; 19:139-40. [PMID: 2390794] [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: 12/31/2022]
Abstract
Atrial muscle cells from three cases of 4-month human embryonic (by uterotomy) were studied through for electronic microscopy and the evidences obtained were as follows: 1. Mechanical stimulation and noradrenaline (20ng/ml) induced SG secretion. 2. 654-2 (10 micrograms/ml), COQ10 (2.5 micrograms/ml), Se(10(-7) M) and verapamil (1 microgram/ml) did not depress SG secretion by noradrenaline.
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Affiliation(s)
- Z R Wang
- Department of Pathophysiology, Harbin Medical University
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48
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Wang DS, Zheng XH, Chen DS, Wang ZR. Surgical treatment of congenital choledochal cyst. Singapore Med J 1990; 31:53-5. [PMID: 2333546] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
20 cases of congenital choledochal cyst were operated by modified Lilly's method from 1980 to November 1985 in our Hospital. There were 4 males and 16 females. Their ages ranged from 50 days to 15 years with a mean of 5.1 years. All patients had preoperative ultrasonographic examination, barium meal radiography of the gastrointestinal tract or percutaneous transhepatic cholangiography. All had choledochal cystectomy with retention of the outer layer of the posterior wall of the cyst. We modified Lilly's method by injecting normal saline between the outer and inner layer of the choledochal cyst so that the outer layer could be isolated. Reconstruction of the biliary tract was then performed. 2 patients had choledochoduodenostomy and 18 patients had hepaticojejunostomy (1 end to end and 17 end to side). 19 patients had also had cholecystectomy. The post-operative course of the operation was found to be smooth and safe. Patients were followed up for a period from 6 months to 7 years. 3 patients had cirrhosis of liver, 2 of whom died within 8 months. The mortality rate in our series was 10%. The operative treatment and the problems of biliary reconstruction are discussed.
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Affiliation(s)
- D S Wang
- Department of Surgery & Pediatric Surgery, Anhui Provincial Hospital, China
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49
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Kubo T, Hamada S, Nohara T, Wang ZR, Hirayama H, Ikegami K, Yasukawa K, Takido M. Study on the constituents of Desmodium styracifolium. Chem Pharm Bull (Tokyo) 1989; 37:2229-31. [PMID: 2598326 DOI: 10.1248/cpb.37.2229] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Two triterpenoid saponins (1 and 2) were isolated from Desmodii Herba [the dried whole plants of Desmodium styracifolium (Osbeck) Merr. (Leguminosae)] and their chemical structures were characterized as soyasaponin I and a new saponin, 3-O-[alpha-L-rhamnopyranosyl-(1----2)-beta-D-galactopyranosyl- (1----2)-beta-D-glucuronopyranosyl]soyasapogenol E, respectively, by chemical and spectroscopic means.
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50
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Wang ZR. [Early X-ray features of dilated cardiomyopathy]. Zhonghua Fang She Xue Za Zhi 1988; 22:322-4. [PMID: 3250814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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