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Zhang X, Qiao Z, Guan B, Wang F, Shen X, Shu H, Shan Y, Cong Y, Xing S, Yu Z. Fluacrypyrim Protects Hematopoietic Stem and Progenitor Cells against Irradiation via Apoptosis Prevention. Molecules 2024; 29:816. [PMID: 38398568 PMCID: PMC10893289 DOI: 10.3390/molecules29040816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/19/2024] [Accepted: 01/29/2024] [Indexed: 02/25/2024] Open
Abstract
Ionizing radiation (IR)-induced hematopoietic injury has become a global concern in the past decade. The underlying cause of this condition is a compromised hematopoietic reserve, and this kind of hematopoietic injury could result in infection or bleeding, in addition to lethal mishaps. Therefore, developing an effective treatment for this condition is imperative. Fluacrypyrim (FAPM) is a recognized effective inhibitor of STAT3, which exhibits anti-inflammation and anti-tumor effects in hematopoietic disorders. In this context, the present study aimed to determine whether FAPM could serve as a curative agent in hematopoietic-acute radiation syndrome (H-ARS) after total body irradiation (TBI). The results revealed that the peritoneally injection of FAPM could effectively promote mice survival after lethal dose irradiation. In addition, promising recovery of peripheral blood, bone marrow (BM) cell counts, hematopoietic stem cell (HSC) cellularity, BM colony-forming ability, and HSC reconstituting ability upon FAPM treatment after sublethal dose irradiation was noted. Furthermore, FAPM could reduce IR-induced apoptosis in hematopoietic stem and progenitor cells (HSPCs) both in vitro and in vivo. Specifically, FAPM could downregulate the expressions of p53-PUMA pathway target genes, such as Puma, Bax, and Noxa. These results suggested that FAPM played a protective role in IR-induced hematopoietic damage and that the possible underlying mechanism was the modulation of apoptotic activities in HSCs.
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Affiliation(s)
- Xuewen Zhang
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Zizhi Qiao
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Bo Guan
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing 100850, China
- The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou 215000, China
| | - Fangming Wang
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing 100850, China
- School of Life Science, Anhui Medical University, Hefei 230032, China
| | - Xing Shen
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Hui Shu
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing 100850, China
- School of Life Science, Anhui Medical University, Hefei 230032, China
| | - Yajun Shan
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Yuwen Cong
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Shuang Xing
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Zuyin Yu
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing 100850, China
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Zhou Y, Zhang T, Zhang YY, Xu J, Li M, Zhang Q, Qiao Z, Yang K. Expression and distribution of erythropoietin, vascular endothelial growth factor (VEGF) and VEGF receptor 2 in small intestine of yaks at different ages. Folia Morphol (Warsz) 2022; 82:683-695. [PMID: 35692112 DOI: 10.5603/fm.a2022.0058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 06/05/2022] [Accepted: 06/06/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND This study aimed to detect the expression and distribution of vascular endothelial growth factor (VEGF), VEGF receptor 2 (VEGFR-2), and erythropoietin (EPO) proteins in small intestinal tissues of 50-day-old, newborn, and adult yaks. The results provide basic data for the study of the relationship between adaptability and age of plateau yak. MATERIALS AND METHODS Small intestine tissues from healthy adult, 50-day-old, and newborn yak were collected and embedded in paraffin sections. Histological features were observed by haematoxylin and eosin staining. The expression of VEGF, VEGFR-2, and EPO proteins were detected by immunohistochemical staining. RESULTS Immunohistochemical results showed that of the expression VEGF, VEGFR-2, and EPO were detected in the small intestinal villi of yaks at all ages. The EPO expression level in the jejunum and duodenal villous epithelial cells of newborn yaks was significantly higher than that of 50-day-old and adult yaks. The EPO expression level in ileum villous epithelial cells of 50-day-old yaks was significantly higher than that of newborn and adult yaks. VEGF expression in newborn yak ileum and jejunum epithelial cells of the intestinal villus were significantly higher than in the 50-day-old and adult. In the 50-day-old yaks, the duodenal intestinal villus epithelial cells expression levels were higher than in the adult and newborn yaks. The expression level of VEGFR-2 in the ileum, jejunum and duodenal villous epithelial cells of 50-day-old yak was significantly higher than in that of adult and newborn yak. CONCLUSIONS The expression and distribution characteristics of EPO, VEGF, and VEGFR-2 in yak intestinal tissues of different ages indicate that these proteins may be involved in the physiological regulation of yak intestines in hypoxic environments. It may be an important regulatory protein in yak adaptation to a high altitude and low oxygen environment.
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Affiliation(s)
- Y Zhou
- Life Science and Engineering College, Northwest Minzu University, Lanzhou, P.R. China.
| | - T Zhang
- Life Science and Engineering College, Northwest Minzu University, Lanzhou, P.R. China
| | - Y Y Zhang
- Life Science and Engineering College, Northwest Minzu University, Lanzhou, P.R. China
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Centre, Northwest Minzu University, Lanzhou, P.R. China
- Gansu Tech Innovation Center of Animal Cell, Biomedical Research Center, Northwest Minzu University, Lanzhou, P.R. China
| | - J Xu
- Life Science and Engineering College, Northwest Minzu University, Lanzhou, P.R. China
| | - M Li
- Life Science and Engineering College, Northwest Minzu University, Lanzhou, P.R. China
| | - Q Zhang
- Laboratory of Animal Anatomy and Tissue Embryology, Department of Basic Veterinary Medicine, Faculty of Veterinary Medicine, Gansu Agricultural University, Lanzhou, P.R. China
| | - Z Qiao
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Centre, Northwest Minzu University, Lanzhou, P.R. China
- Gansu Tech Innovation Center of Animal Cell, Biomedical Research Center, Northwest Minzu University, Lanzhou, P.R. China
| | - K Yang
- Life Science and Engineering College, Northwest Minzu University, Lanzhou, P.R. China
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Centre, Northwest Minzu University, Lanzhou, P.R. China
- Gansu Tech Innovation Center of Animal Cell, Biomedical Research Center, Northwest Minzu University, Lanzhou, P.R. China
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Cui KY, Yin D, Feng L, Zhu CG, Song WH, Wang HJ, Jia L, Zhang D, Yuan S, Wu SY, He JN, Qiao Z, Dou KF. [Benefits and risks of prolonged dual antiplatelet therapy after percutaneous coronary intervention with drug-eluting stent in patients with stable coronary artery disease and diabetes]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:458-465. [PMID: 35589594 DOI: 10.3760/cma.j.cn112148-20220114-00034] [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: 06/15/2023]
Abstract
Objective: To compare the efficacy and safety of prolonged dual antiplatelet therapy (DAPT>1 year) in patients with stable coronary artery disease (CAD) and diabetes who were event-free at 1 year after percutaneous coronary intervention (PCI) with drug-eluting stent (DES) in a large and contemporary PCI registry. Methods: A total of 1 661 eligible patients were selected from the Fuwai PCI Registry, of which 1 193 received DAPT>1 year and 468 received DAPT ≤1 year. The primary endpoint was major adverse cardiac and cerebrovascular event (MACCE) and Bleeding Academic Research Consortium (BARC) type 2, 3 or 5 bleeding, MACCE was defined as a composite of all-cause death, myocardial infarction or stroke. Multivariate Cox regression analysis and inverse probability of treatment weighting (IPTW) Cox regression analysis were performed. Results: After a median follow-up of 2.5 years, patients who received DAPT>1 year were associated with lower risks of MACCE (1.4% vs. 3.2%; hazard ratio (HR) 0.412, 95% confidence interval (CI) 0.205-0.827) compared with DAPT ≤1 year, which was primarily caused by the lower all-cause mortality (0.1% vs. 2.6%; HR 0.031, 95%CI 0.004-0.236). Risks of cardiac death (0.1% vs. 1.5%; HR 0.051, 95%CI 0.006-0.416) and definite/probable ST (0.3% vs. 1.1%; HR 0.218, 95%CI 0.052-0.917) were also lower in patients received DAPT>1 year than those received DAPT ≤ 1 year. No difference was found between the two groups in terms of BARC type 2, 3, or 5 bleeding (5.3% vs. 4.1%; HR 1.088, 95%CI 0.650-1.821). Conclusions: In patients with stable CAD and diabetes who were event-free at 1 year after PCI with DES, prolonged DAPT (>1 year) provides a substantial reduction in ischemic cardiovascular events, including MACCE, all-cause mortality, cardiac mortality, and definite/probable ST, without increasing the clinically relevant bleeding risk compared with ≤ 1-year DAPT. Further well-designed, large-scale randomized trials are needed to verify the beneficial effect of prolonged DAPT in this population.
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Affiliation(s)
- K Y Cui
- Cardiometabolic Medicine Center, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - D Yin
- Cardiometabolic Medicine Center, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - L Feng
- Cardiometabolic Medicine Center, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - C G Zhu
- Cardiometabolic Medicine Center, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - W H Song
- Cardiometabolic Medicine Center, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - H J Wang
- Cardiometabolic Medicine Center, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - L Jia
- Cardiometabolic Medicine Center, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - D Zhang
- Cardiometabolic Medicine Center, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - S Yuan
- Cardiometabolic Medicine Center, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - S Y Wu
- Cardiometabolic Medicine Center, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - J N He
- Cardiometabolic Medicine Center, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Z Qiao
- Cardiometabolic Medicine Center, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - K F Dou
- Cardiometabolic Medicine Center, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
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Ding Z, Liu SJ, Liu XW, Ma Q, Qiao Z. MiR-16 inhibits proliferation of cervical cancer cells by regulating KRAS. Eur Rev Med Pharmacol Sci 2021; 24:10419-10425. [PMID: 33155198 DOI: 10.26355/eurrev_202010_23393] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to explore the effects of micro ribonucleic acid (miR)-16 on the proliferation and apoptosis of cervical cancer (CC) cells and its related regulatory mechanism. MATERIALS AND METHODS The downstream regulatory targets of miR-16 were analyzed based on the miRNA online database. HCC94 cells were selected as experimental objects. Subsequently, the cells were transfected with miR-16 mimic (miR-16 mimic group), miR-16 small interfering RNA (siRNA) (miR-16 siRNA group) and only Lipofectamine 2000 transfection reagent [blank control group and miR-16 normal control (NC) group]. The expression level of miR-16 in HCC94 cells was measured via quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Cell counting kit-8 (CCK-8) assay, 5-Ethynyl-2'-deoxyuridine (EdU) staining assay and flow cytometry were then conducted to detect the effects of miR-16 on the viability, proliferation and apoptosis of HCC94 cells, respectively. Additionally, the effect of miR-16 on the protein expression level of Kirsten rat sarcoma viral oncogene homolog (KRAS) in HCC94 cells was determined via Western blotting. RESULTS MiRNA online database analysis showed that KRAS was the downstream target of miR-16. Compared with miR-16 NC group, the viability and proliferation ability of HCC94 cells increased significantly in miR-16 siRNA group but decreased significantly in miR-16 mimic group (p<0.05). However, the apoptosis rate evidently declined in miR-16 siRNA group while increased remarkably in miR-16 mimic group (p<0.05). In addition, the protein expression level of KRAS in HCC94 cells was significantly higher in miR-16 siRNA group but significantly lower in miR-16 mimic group when compared with miR-16 NC group (p<0.05). CONCLUSIONS MiR-16 is lowly expressed in HCC94 cells. Moreover, highly expressed miR-16 represses the viability and proliferation of HCC94 cells and promotes their apoptosis by targeted regulation on KRAS.
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Affiliation(s)
- Z Ding
- Department of Oncology, Affiliated Hospital of Jining Medical University, Jining, Jining, China.
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Huang B, Chen Y, Zhai M, Qin A, Wu J, Lu Y, Jiang X, Qiao Z. Clinical Study of Laparoscopy Combined with Choledochoscope in the Treatment of Cholecystolithiasis Combined with Choledocholithiasis. Indian J Pharm Sci 2021. [DOI: 10.36468/pharmaceutical-sciences.spl.324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Yang K, Zhang Z, Li Y, Chen S, Chen W, Ding H, Tan Z, Ma Z, Qiao Z. Expression and distribution of HIF-1α, HIF-2α, VEGF, VEGFR-2 and HIMF in the kidneys of Tibetan sheep, plain sheep and goat. Folia Morphol (Warsz) 2020; 79:748-755. [PMID: 32020576 DOI: 10.5603/fm.a2020.0011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/29/2020] [Accepted: 01/29/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND The objective of this study was to detect the expression and distribution characteristics of five proteins (the hypoxia-inducible factor 1alpha [HIF-1a], HIF-2a, vascular endothelial growth factor [VEGF], VEGF-2 receptor [VEGFR-2] and hypoxia-induced mitogenic factor [HIMF]) in kidney of Tibetan sheep, plain sheep and goat. The results will provide the basic information for the comparative study of sheep breeds living at different altitudes. MATERIALS AND METHODS The kidney tissues were collected from healthy adult Tibetan sheep, plain sheep and goats and made into paraffin sections. Histological characteristics were assessed by haematoxylin and eosin staining. Expressions of HIF-1a, HIF-2a, VEGF, VEGFR-2 and HIMF proteins were measured by immunohistochemical staining. RESULTS Immunohistochemistry results showed that the positive expression signals of HIF-1a, HIF-2a, VEGF and VEGFR-2 were detected in epithelial cells of renal tubules and collecting tubules, renal corpuscles in the kidneys of the three sheep breeds. Positive expression signals of HIMF were detected in epithelial cells of proximal tubules and distal tubules in Tibetan sheep and epithelial cells of distal tubules in goat. Immunostaining intensity of HIF-1a, HIF-2a, VEGF and VEGFR-2 proteins in Tibetan sheep was significantly higher than that in both plain sheep and goat (p < 0.05). Immunostaining intensity of HIMF in Tibetan sheep was higher than goat (p < 0.05). Positive expression signals of HIMF were not detected in plain sheep. CONCLUSIONS The expression and distribution characteristics of HIF-1a, HIF-2a, VEGF, VEGFR-2 and HIMF in the studied kidney tissues suggested that these proteins may be related to the physiological regulation of Tibetan sheep kidney in hypoxia environment, and therefore might be important regulating proteins for Tibetan sheep to adapt to high altitude hypoxia environment.
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Affiliation(s)
- K Yang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, P.R. China
| | - Z Zhang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, P.R. China.
| | - Y Li
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, P.R. China
| | - S Chen
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, P.R. China
| | - W Chen
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, P.R. China
| | - H Ding
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, P.R. China
| | - Z Tan
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, P.R. China
| | - Z Ma
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Northwest Minzu University, Lanzhou, P.R. China
| | - Z Qiao
- Gansu Tech Innovation Center of Animal Cell, Biomedical Research Center, Northwest Minzu University, Lanzhou, P.R. China
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Xia T, Kleinheksel A, Lee EM, Qiao Z, Wigginton KR, Clack HL. Inactivation of airborne viruses using a packed bed non-thermal plasma reactor. J Phys D Appl Phys 2019; 52:255201. [PMID: 32287389 PMCID: PMC7106774 DOI: 10.1088/1361-6463/ab1466] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 03/25/2019] [Accepted: 03/28/2019] [Indexed: 05/17/2023]
Abstract
Outbreaks of airborne infectious diseases such as measles or severe acute respiratory syndrome can cause significant public alarm. Where ventilation systems facilitate disease transmission to humans or animals, there exists a need for control measures that provide effective protection while imposing minimal pressure differential. In the present study, viral aerosols in an airstream were subjected to non-thermal plasma (NTP) exposure within a packed-bed dielectric barrier discharge reactor. Comparisons of plaque assays before and after NTP treatment found exponentially increasing inactivation of aerosolized MS2 phage with increasing applied voltage. At 30 kV and an air flow rate of 170 standard liters per minute, a greater than 2.3 log reduction of infective virus was achieved across the reactor. This reduction represented ~2 log of the MS2 inactivated and ~0.35 log physically removed in the packed bed. Increasing the air flow rate from 170 to 330 liters per minute did not significantly impact virus inactivation effectiveness. Activated carbon-based ozone filters greatly reduced residual ozone, in some cases down to background levels, while adding less than 20 Pa pressure differential to the 45 Pa differential pressure across the packed bed at the flow rate of 170 standard liters per minute.
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Affiliation(s)
- T Xia
- Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI, United States of
| | - A Kleinheksel
- Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI, United States of
| | - E M Lee
- Department of Mechanical, Materials, and Aerospace Engineering, Illinois Institute of Technology, Chicago, IL, United States of America
| | - Z Qiao
- Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI, United States of
| | - K R Wigginton
- Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI, United States of
| | - H L Clack
- Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI, United States of
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Qiao Z, Zhao X, Wang K, Zhang Y, Fan D, Yu T, Shen H, Chen Q, Ai L. Utility of Dynamic Susceptibility Contrast Perfusion-Weighted MR Imaging and 11C-Methionine PET/CT for Differentiation of Tumor Recurrence from Radiation Injury in Patients with High-Grade Gliomas. AJNR Am J Neuroradiol 2019; 40:253-259. [PMID: 30655259 DOI: 10.3174/ajnr.a5952] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 11/24/2018] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Both 11C-methionine PET/CT and DSC-PWI could be used to differentiate radiation injury from recurrent brain tumors. Our aim was to assess the performance of MET PET/CT and DSC-PWI for differentiation of recurrence and radiation injury in patients with high-grade gliomas and to quantitatively analyze the diagnostic values of PET and PWI parameters. MATERIALS AND METHODS Forty-two patients with high-grade gliomas were enrolled in this study. The final diagnosis was determined by histopathologic analysis or clinical follow-up. PWI and PET parameters were recorded and compared between patients with recurrence and those with radiation injury using Student t tests. Receiver operating characteristic and logistic regression analyses were used to determine the diagnostic performance of each parameter. RESULTS The final diagnosis was recurrence in 33 patients and radiation injury in 9. PET/CT showed a patient-based sensitivity and specificity of 0.909 and 0.556, respectively, while PWI showed values of 0.667 and 0.778, respectively. The maximum standardized uptake value, mean standardized uptake value, tumor-to-background maximum standardized uptake value, and mean relative CBV were significantly higher for patients with recurrence than for patients with radiation injury. All these parameters showed a high discriminative power in receiver operating characteristic analysis. The optimal cutoff values for the tumor-to-background maximum standardized uptake value and mean relative CBV were 1.85 and 1.83, respectively, and corresponding sensitivities and specificities for the diagnosis of recurrence were 0.97 and 0.667 and 0.788 and 0.88, respectively. Areas under the curve for the tumor-to-background maximum standardized uptake value and mean relative CBV were 0.847 ± 0.077 and 0.845 ± 0.078, respectively. Combined assessment of the tumor-to-background maximum standardized uptake value and mean relative CBV showed the largest area under the curve (0.953 ± 0.031), with corresponding sensitivity and specificity of 0.848 and 1.0, respectively. CONCLUSIONS Both 11C-methionine PET/CT and PWI are equally accurate in the differentiation of recurrence from radiation injury in patients with high-grade gliomas, and a combination of the 2 modalities could result in increased diagnostic accuracy.
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Affiliation(s)
- Z Qiao
- From the Departments of Nuclear Medicine (Z.Q., X.Z., K.W., Y.Z., D.F., Q.C., L.A.)
| | - X Zhao
- From the Departments of Nuclear Medicine (Z.Q., X.Z., K.W., Y.Z., D.F., Q.C., L.A.)
| | - K Wang
- From the Departments of Nuclear Medicine (Z.Q., X.Z., K.W., Y.Z., D.F., Q.C., L.A.)
| | - Y Zhang
- From the Departments of Nuclear Medicine (Z.Q., X.Z., K.W., Y.Z., D.F., Q.C., L.A.)
| | - D Fan
- From the Departments of Nuclear Medicine (Z.Q., X.Z., K.W., Y.Z., D.F., Q.C., L.A.)
| | - T Yu
- Department of Medical Imaging (T.Y.), Cancer Hospital of China Medical University, Shenyang, China.,Department of Medical Imaging (T.Y.), Liaoning Cancer Hospital and Institute, Shenyang, China
| | - H Shen
- Radiology (H.S.), Beijing Tian Tan Hospital, Capital Medical University, Beijing, China
| | - Q Chen
- From the Departments of Nuclear Medicine (Z.Q., X.Z., K.W., Y.Z., D.F., Q.C., L.A.)
| | - L Ai
- From the Departments of Nuclear Medicine (Z.Q., X.Z., K.W., Y.Z., D.F., Q.C., L.A.)
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Xiang P, Bu J, Qiao Z, Zhuo XY, Wu HJ, Shen M. [Identification of Methamphetamine Abuse and Selegiline Use: Chiral Analysis of Methamphetamine and Amphetamine in Urine]. Fa Yi Xue Za Zhi 2017; 33:599-603. [PMID: 29441766 DOI: 10.3969/j.issn.1004-5619.2017.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Indexed: 06/08/2023]
Abstract
OBJECTIVES To study the content variation of selegiline and its metabolites in urine, and based on actual cases, to explore the feasibility for the identification of methamphetamine abuse and selegiline use by chiral analysis. METHODS The urine samples were tested by chiral separation and LC-MS/MS method using CHIROBIOTIC™ V2 chiral liquid chromatography column. The chiral analysis of methamphetamine and amphetamine were performed on the urine samples from volunteers of selegiline use and drug addicts whom suspected taking selegiline. RESULTS After 5 mg oral administration, the positive test time of selegiline in urine was less than 7 h. The mass concentrations of R(-)-methamphetamine and R(-)-amphetamine in urine peaked at 7 h which were 0.86 μg/mL and 0.18 μg/mL and couldn't be detected after 80 h and 168 h, respectively. The sources of methamphetamine and amphetamine in the urine from the drug addicts whom suspected taking selegiline were analysed successfully by present method. CONCLUSIONS The chiral analysis of methamphetamine and amphetamine, and the determination of selegiline's metabolites can be used to distinguish methamphetamine abuse from selegiline use.
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Affiliation(s)
- P Xiang
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - J Bu
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - Z Qiao
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - X Y Zhuo
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - H J Wu
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - M Shen
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
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Dang Z, Fu Y, Duo H, Fan H, Qiao Z, Guo Z, Feng K, Chui W, Shen X, Geng Qiu J, Ni M, He S, Zhao H, Peng M, Xiao N, Nonaka N, Nasu T, Huang F, Oku Y, Hayashimoto N, Hu W, Li W. An epidemiological survey of echinococcosis in intermediate and definitive hosts in Qinghai Province, China. Trop Biomed 2017; 34:483-490. [PMID: 33593033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In order to understand the epidemiological status of alveolar and cystic echinococcosis in intermediate and definitive hosts in Qinghai Province, China, during the period 2007-2011, we investigated the infection in humans and animals, including yaks, Tibetan sheep, Tibetan dogs, and wild foxes distributed in different counties around the province. Sera from local residents were examined using a rapid serodiagnostic kit to detect specific antibodies against Echinococcus. Seropositive samples were confirmed with B-scan ultrasonography and X-ray examinations. Yaks and Tibetan sheep were checked at slaughterhouses, and cysts and suspicious lesions were collected for analysis. A rapid diagnostic strip was used to detect Echinococcus adults in Tibetan dogs. Positive dogs were dewormed and the parasites collected. Wild foxes were trapped and necropsies performed with particular attention to the intestine. Forty-eight of 735 (6.4%) humans tested were positive and 475 of 854 (55.6%) Tibetan sheep and 85 of 352 (24.15%) yaks were infected with Echinococcus. Across different counties, 214 of 948 (22.57%) Tibetan dogs were positive, and five of 36 (13.9%) wild foxes were infected with Echinococcus. Molecular studies showed that all the infections detected in humans, domestic yaks, and Tibetan sheep were the G1 genotype (E. granulosus), whereas the parasites from Tibetan foxes and Tibetan dogs were E. shiquicus and E. multilocularis, respectively. In conclusion, Echinococcosis is hyperendemic in Qinghai Province in both its intermediate and definitive hosts and the G1 genotype of cystic Echinococcus is the dominant strain.
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Affiliation(s)
- Z Dang
- Key Laboratory on Biology of Parasite and Vector, Ministry of Health, Shanghai, China; National Center for International Research on Tropical Diseases, Shanghai, China; WHO Collaborating Center for Tropical Diseases, Shanghai, China; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, China
| | - Y Fu
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - H Duo
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - H Fan
- Affiliated Hospital of Qinghai University, Xining 810016, China
| | - Z Qiao
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - Z Guo
- Key Laboratory on Biology of Parasite and Vector, Ministry of Health, Shanghai, China; National Center for International Research on Tropical Diseases, Shanghai, China; WHO Collaborating Center for Tropical Diseases, Shanghai, China; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, China
- Affiliated Hospital of Qinghai University, Xining 810016, China
| | - K Feng
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
- Laboratory of Veterinary Parasitic Diseases, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - W Chui
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - X Shen
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - J Geng Qiu
- Zhen Qin Township Veterinary Station, Chengduo 815100, China
| | - M Ni
- Haiyan Veterinary Stations, Haiyan 812200, China
| | - S He
- Haiyan Veterinary Stations, Haiyan 812200, China
| | - H Zhao
- Medical College of Qinghai University, Xining 810016, China
| | - M Peng
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - N Xiao
- Key Laboratory on Biology of Parasite and Vector, Ministry of Health, Shanghai, China; National Center for International Research on Tropical Diseases, Shanghai, China; WHO Collaborating Center for Tropical Diseases, Shanghai, China; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, China
| | - N Nonaka
- Laboratory of Veterinary Parasitic Diseases, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - T Nasu
- Laboratory of Veterinary Parasitic Diseases, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - F Huang
- Parasitology Laboratory, School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - Y Oku
- Parasitology Laboratory, School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - N Hayashimoto
- ICLAS Monitoring Center, Central Institute for Experimental Animals, 3-25-12 Tonomachi, Kawasaki, Kanagawa 210-0821, Japan
| | - W Hu
- Key Laboratory on Biology of Parasite and Vector, Ministry of Health, Shanghai, China; National Center for International Research on Tropical Diseases, Shanghai, China; WHO Collaborating Center for Tropical Diseases, Shanghai, China; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, China
| | - W Li
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
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Qiao Z, Chen Y, Zhang Y, Niu Q. Beneficial effects of deep sea fish oil on diabetic mice neurological injury. ACTA ACUST UNITED AC 2017; 63:45-48. [PMID: 28234624 DOI: 10.14715/cmb/2017.63.1.9] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 02/22/2017] [Indexed: 11/18/2022]
Abstract
Deep sea fish oil mainly includes polyunsaturated fatty acid, which is usually used as health products and applied for prevention of cardiovascular and cerebrovascular diseases. However, there are only a few studies investigating the diabetes induced nerve injury till now. We established the diabetic model by using the 8-week old inbred male mice, and assumed that fish oil had a certain therapeutic effect on related neurosensory impairment and oxidative stress. Mice were divided into group A (diabetic mice induced by streptozotocin (STZ) and treated with fish oil), group B (diabetic mice) and group C (normal mice, without STZ treatment). The memory and exploration ability were evaluated and oxidation status of brain tissue was detected. Results indicated that memory and exploration ability of fish oil group A was significantly improved compared to diabetic group B (P<0.05), and equal to group C. The malondialdehyde (MDA) level of fish oil group A was decreased significantly and antioxidant level was increased significantly compared to diabetic group B (P<0.05), and equal to group C. In conclusion, deep sea fish oil could be used as auxiliary health care products, which plays important role in preventing and treating implications of nerve lesion impairment induced by diabetes mellitus.
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Affiliation(s)
- Z Qiao
- Nutritional department, Shan xi province people's hospital, Youyi Western Road 256#, Xi'an 710068, China
| | - Y Chen
- Department of cardiology, Xi'an electric power center hospital, Changying Estern 99#, Xi'an 710032, China
| | - Y Zhang
- Department of Paediatrics, Shan xi province people's hospital, Youyi Western Road 256#, Xi'an 710068, China
| | - Q Niu
- Department of Paediatrics, Shan xi province people's hospital, Youyi Western Road 256#, Xi'an 710068, China
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12
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Trzepizur W, Khalyfa A, Qiao Z, Popko B, Gozal D. Implication de l’activation de la réponse intégrée au stress par la fragmentation du sommeil au cours de la grossesse dans l’émergence d’un profil dysmétabolique au sein de la progéniture. Rev Mal Respir 2017. [DOI: 10.1016/j.rmr.2016.10.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Trzepizur W, Khalyfa A, Qiao Z, Popko B, Gozal D. Implication de l’activation de la réponse intégrée au stress par la fragmentation du sommeil au cours de la grossesse dans l’émergence d’un profil dysmétabolique au sein de la progéniture. Rev Mal Respir 2017. [DOI: 10.1016/j.rmr.2016.10.871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Dai J, Zhan C, Xu W, Wang Z, Nie D, Zhao X, Zhang D, Gu Y, Wang L, Chen Z, Qiao Z. Nicotine elevates sperm motility and inducesPfn1promoter hypomethylation in mouse testis. Andrology 2015; 3:967-78. [DOI: 10.1111/andr.12072] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Revised: 06/08/2015] [Accepted: 06/10/2015] [Indexed: 11/29/2022]
Affiliation(s)
- J. Dai
- School of Life Sciences and Biotechnology; Shanghai Jiao Tong University; Shanghai China
| | - C. Zhan
- School of Life Sciences and Biotechnology; Shanghai Jiao Tong University; Shanghai China
| | - W. Xu
- School of Life Sciences and Biotechnology; Shanghai Jiao Tong University; Shanghai China
| | - Z. Wang
- School of Life Sciences and Biotechnology; Shanghai Jiao Tong University; Shanghai China
| | - D. Nie
- School of Life Sciences and Biotechnology; Shanghai Jiao Tong University; Shanghai China
| | - X. Zhao
- School of Life Sciences and Biotechnology; Shanghai Jiao Tong University; Shanghai China
| | - D. Zhang
- School of Life Sciences and Biotechnology; Shanghai Jiao Tong University; Shanghai China
| | - Y. Gu
- School of Life Sciences and Biotechnology; Shanghai Jiao Tong University; Shanghai China
| | - L. Wang
- School of Life Sciences and Biotechnology; Shanghai Jiao Tong University; Shanghai China
| | - Z. Chen
- Department of Urology; Shanghai 6th People's Hospital; Shanghai Jiao Tong University; Shanghai China
| | - Z. Qiao
- School of Life Sciences and Biotechnology; Shanghai Jiao Tong University; Shanghai China
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Fang P, Xu W, Li D, Zhao X, Dai J, Wang Z, Yan X, Qin M, Zhang Y, Xu C, Wang L, Qiao Z. A novel acrosomal protein, IQCF1, involved in sperm capacitation and the acrosome reaction. Andrology 2014; 3:332-44. [PMID: 25380116 DOI: 10.1111/andr.296] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 09/08/2014] [Accepted: 09/20/2014] [Indexed: 12/11/2022]
Abstract
On the basis of the unknown tags in the mature human sperm serial analysis of gene expression library constructed by our laboratory, some transcripts were cloned, including Iqcf1 (IQ motif containing F1). To investigate the function of sperm-retained Iqcf1 in spermatogenesis and fertilization of mice, we investigated the spatial and temporal expression of IQCF1. By using the (transcription activator-like effector nuclease) strategy, Iqcf1-knockout mice were produced, and the phenotypes of the Iqcf1(-/-) mice were analyzed. The results showed that IQCF1 was localized in the acrosome of spermatozoa and spermatids; the expression of IQCF1 in testes was associated with spermatogenic capacity. The Iqcf1(-/-) mice were significantly less fertile than the wild-type mice (p = 0.0057) because of reduced sperm motility (p = 0.0094) and the acrosome reaction (AR) (p = 0.0093). In spermatozoa, IQCF1 interacted with calmodulin (CaM) and possibly participated in the tyrosine phosphorylation of sperm proteins during capacitation. In conclusion, a newly identified acrosomal protein, IQCF1, is closely related to sperm capacitation and AR; in particular, it is involved in tyrosine phosphorylation of sperm proteins through interaction with CaM. Research into the function of IQCF1 during fertilization could facilitate the investigation of the molecular mechanism of capacitation, which is unclear.
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Affiliation(s)
- P Fang
- School of Life Sciences and Biotechnology, Shanghai Key Laboratory of Reproductive Medicine, Shanghai Jiao Tong University, Shanghai, China
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16
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17
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Podobnik B, Majdandzic A, Curme C, Qiao Z, Zhou WX, Stanley HE, Li B. Network risk and forecasting power in phase-flipping dynamical networks. Phys Rev E Stat Nonlin Soft Matter Phys 2014; 89:042807. [PMID: 24827293 DOI: 10.1103/physreve.89.042807] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Indexed: 06/03/2023]
Abstract
To model volatile real-world network behavior, we analyze a phase-flipping dynamical scale-free network in which nodes and links fail and recover. We investigate how stochasticity in a parameter governing the recovery process affects phase-flipping dynamics, and we find the probability that no more than q% of nodes and links fail. We derive higher moments of the fractions of active nodes and active links, fn(t) and fℓ(t), and we define two estimators to quantify the level of risk in a network. We find hysteresis in the correlations of fn(t) due to failures at the node level, and we derive conditional probabilities for phase-flipping in networks. We apply our model to economic and traffic networks.
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Affiliation(s)
- B Podobnik
- Center for Polymer Studies and Department of Physics, Boston University, Boston, Massachusetts 02215, USA and Faculty of Civil Engineering, University of Rijeka, 51000 Rijeka, Croatia and Zagreb School of Economics and Management, 10000 Zagreb, Croatia and Faculty of Economics, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - A Majdandzic
- Center for Polymer Studies and Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - C Curme
- Center for Polymer Studies and Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - Z Qiao
- NUS Graduate School for Integrative Sciences and Engineering, NUS, Singapore 117456, Singapore and Department of Physics and Center for Computational Science and Engineering, NUS, Singapore 117546, Singapore
| | - W-X Zhou
- School of Business, School of Science, and Research Center for Econophysics, East China University of Science and Technology, Shanghai 200237, China
| | - H E Stanley
- Center for Polymer Studies and Department of Physics, Boston University, Boston, Massachusetts 02215, USA
| | - B Li
- NUS Graduate School for Integrative Sciences and Engineering, NUS, Singapore 117456, Singapore and Department of Physics and Center for Computational Science and Engineering, NUS, Singapore 117546, Singapore and Center for Phononics and Thermal Energy Science, School of Physics Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
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18
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Shen Q, Shen J, Qiao Z, Yao Q, Huang G, Hu X. Cardiac rhabdomyomas associated with tuberous sclerosis complex in children. Herz 2014; 40:675-8. [DOI: 10.1007/s00059-014-4078-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 01/09/2014] [Accepted: 02/04/2014] [Indexed: 11/24/2022]
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Zhao Y, Wen G, Qiao Z, Xu H, Sun Q, Huang H, Shan S, Mu Z, Zhang J. Effects of tetra-arsenic tetra-sulfide on BXSB lupus-prone mice: a pilot study. Lupus 2014; 22:469-76. [PMID: 23554035 DOI: 10.1177/0961203313478302] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease of uncertain etiology that affects multiple tissues and organs. Arsenic trioxide (ATO) has been used in lupus-prone mice with a regulatory effect on immune abnormality. Tetra-arsenic tetra-sulfide (As4S4), a traditional Chinese medicine, is effective on acute promyelocytic leukemia with mild side effects than ATO. In this study, a pilot study was performed to investigate the effects and the mechanism of As4S4 on the lupus-prone BXSB mice. Improvement of monocytosis (p<0.05) in spleen and decreased serum interleukin-6 (IL-6) (p=0.0277) were observed with As4S4 treatment. As4S4-treated mice exhibited amelioration of skin, liver and renal disease with mild side effects. Histological analysis revealed that As4S4 suppressed immune complex deposition, mesangial proliferation and inflammatory cell infiltration in kidney and liver. Our study support that As4S4 selectively suppresses cutaneous lupus and nephritis in BXSB mice and might be a potential treatment for SLE.
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Affiliation(s)
- Y Zhao
- Department of Dermatology, Peking University People's Hospital, China
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20
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Shi S, Wang Z, Qiao Z. The multifunctional anti-inflammatory drugs used in the therapy of Alzheimer's disease. Curr Med Chem 2013; 20:2583-8. [PMID: 23590711 DOI: 10.2174/0929867311320200006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Revised: 03/05/2013] [Accepted: 04/01/2013] [Indexed: 11/22/2022]
Abstract
Inflammation has recently been implicated as a critical mechanism in Alzheimer's disease (AD). Microglia are the resident immune cells in the central nervous system (CNS), and they mediate the inflammatory response in the AD brain. Thus, suppression of microglial activation and subsequent neuroinflammation may be a potential therapeutic approach against AD. In the following review, we briefly discuss the limitations and advantages of current drug targets for AD and then summarize several anti-inflammatory drugs in trial, including natural nonsteroidal anti-inflammatory drugs (NSAIDs), polyphenols and new drugs synthesized based on multi-target directed ligand (MTDL) design. In addition to their anti-inflammatory effects, these drugs can act as anti-oxidants and reduce microglial activation or amyloid-β (Aβ) plaques. Thus, the studies focused on multiple factors in AD processes might reveal the best potential treatment strategy for the future.
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Affiliation(s)
- S Shi
- School of Life Science and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road 200240 Shanghai, P R China
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21
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Xing H, Zheng H, Wang J, Qiu J, Qiao Z, Peng Z, Shao Y, Xu H, Bu G. Increased menin expression associated with neural apoptosis in the frontal cortex of SIV infected macaques. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Qin Y, Zhang Z, Qiao Z, Qiao Q, Zhang D, Tian Y, Wang S. First Report of Sweet potato leaf curl Georgia virus on Sweet Potato in China. Plant Dis 2013; 97:1388. [PMID: 30722158 DOI: 10.1094/pdis-10-12-0967-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
Begomoviruses infecting sweet potato (Ipomoea batatas) are phylogenetically distinct from other members of the genus Begomovirus, and have been named "sweepoviruses" (1). Sweepoviruses cause sweet potato yield losses and cultivar decline, and have been found in China (1,3). In 2011, a survey was conducted to determine the incidence, genetic diversity, and distribution of sweepoviruses in China. Thirty sweet potato cuttings showing upward leaf curl, leaf roll, chlorosis, and stunting were collected from fields in Jiangsu, Guangxi, Guizhou, Shanxi, Henan, and Hebei Provinces. Five-leaf growth stage I. setosa plants were inoculated by side-grafting with scions from these samples, and grown in an insect-proof greenhouse in 20-cm-diameter clay pots. Each sample was grafted onto three replicate plants. Healthy, non-grafted I. setosa plants were used as the negative control treatment. Total nucleic acids were extracted from 100 mg fresh leaves harvested 30 days post-inoculation (dpi) from symptomatic and negative control plants using the Universal Genomic DNA Extraction Kit (TaKaRa, Dalian, China). Universal primers for amplification of Geminiviruses (BM-V [5'-KSGGGTCGACGTCATCAATGACGTTRTAC-3'] and BM-C [5'-AARGAATTCATKGGGGCCCARARRGACTGGC-3']) (2) were used to amplify the begomovirus A component by PCR assay. A DNA fragment of the expected size (2.8 kb) was obtained from grafted leaf samples of the Hebei Province plant, and was cloned into the pMD-19T vector (TaKaRa). The recombinant plasmid was transformed into competent cells of Escherichia coli strain JM109, and the inserted fragment sequenced. The nucleotide sequence obtained (GenBank Accession No. JX448368) was 2,785 nt long, and contained two open reading frames (ORFs) in the virion sense, and four ORFs in the complementary sense, similar to other monopartite begomoviruses (1). The sequence was compared with sequences in GenBank using BLAST. The results revealed the greatest nucleotide sequence identity, 90.8%, with that of the Sweet potato leaf curl Georgia virus (SPLCGV) from Georgia, United States (AF326775). The sequence also shared identities of <89% with other sweepoviruses, and was therefore designated SPLCGV-China: Hebei: 2011. Comparison of the complete genome sequence of SPLCGV-China: Hebei: 2011 with SPLCGV revealed an 18 nucleotide insertion between AV-1 and AC-3. The results confirmed that the sweet potato sample from which SPLCGV-China: Hebei: 2011 was obtained was infected with SPLCGV. To our knowledge, this is the first report of the natural occurrence of SPLCGV in China. This study will assist with understanding the presence of this virus and genetic diversity of sweepoviruses in China. References: (1) H. P. Bi and P. Zhang. Arch. Virol. 157:441, 2012. (2) R. W. Briddon and P. G. Markham. Mol. Biotechnol. 1:202, 1994. (3) Y. S. Luan et al. Virus Genes 35:379, 2007.
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Affiliation(s)
- Y Qin
- Institute of Plant Protection, Henan Academy of Agricultural Sciences and Henan Key Laboratory of Crop Pest Control and IPM Key Laboratory in Southern Part of North China for Ministry of Agriculture, Zhengzhou, 450002, China
| | - Z Zhang
- Institute of Plant Protection, Henan Academy of Agricultural Sciences and Henan Key Laboratory of Crop Pest Control and IPM Key Laboratory in Southern Part of North China for Ministry of Agriculture, Zhengzhou, 450002, China
| | - Z Qiao
- Institute of Plant Protection, Henan Academy of Agricultural Sciences and Henan Key Laboratory of Crop Pest Control and IPM Key Laboratory in Southern Part of North China for Ministry of Agriculture, Zhengzhou, 450002, China
| | - Q Qiao
- Institute of Plant Protection, Henan Academy of Agricultural Sciences and Henan Key Laboratory of Crop Pest Control and IPM Key Laboratory in Southern Part of North China for Ministry of Agriculture, Zhengzhou, 450002, China
| | - D Zhang
- Institute of Plant Protection, Henan Academy of Agricultural Sciences and Henan Key Laboratory of Crop Pest Control and IPM Key Laboratory in Southern Part of North China for Ministry of Agriculture, Zhengzhou, 450002, China
| | - Y Tian
- Institute of Plant Protection, Henan Academy of Agricultural Sciences and Henan Key Laboratory of Crop Pest Control and IPM Key Laboratory in Southern Part of North China for Ministry of Agriculture, Zhengzhou, 450002, China
| | - S Wang
- Institute of Plant Protection, Henan Academy of Agricultural Sciences and Henan Key Laboratory of Crop Pest Control and IPM Key Laboratory in Southern Part of North China for Ministry of Agriculture, Zhengzhou, 450002, China
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Zhang SXL, Khalyfa A, Wang Y, Carreras A, Hakim F, Neel BA, Brady MJ, Qiao Z, Hirotsu C, Gozal D. Sleep fragmentation promotes NADPH oxidase 2-mediated adipose tissue inflammation leading to insulin resistance in mice. Int J Obes (Lond) 2013; 38:619-24. [PMID: 23897221 PMCID: PMC3907464 DOI: 10.1038/ijo.2013.139] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Revised: 06/24/2013] [Accepted: 07/18/2013] [Indexed: 12/24/2022]
Abstract
Background Short sleep has been implicated in higher risk of obesity in humans, and is associated with insulin resistance. However, the effects of fragmented sleep (SF) rather than curtailed sleep on glucose homeostasis are unknown. Methods Wild type and NADPH oxidase 2 (Nox2) null male mice were subjected to SF or sleep control (SC) conditions for 3 days-3 weeks. Systemic and visceral adipose tissue (VAT) insulin sensitivity tests, glucose tolerance test, FACS and immunohistochemistry for macrophages and sub-types (M1 and M2) and Nox expression and activity were examined. Results Here show that SF in the absence of sleep curtailment induces time-dependent insulin resistance, in vivo and also in vitro in VAT. Oxidative stress pathways were up-regulated by SF in VAT, and were accompanied by M1 macrophage polarization. SF-induced oxidative stress, inflammation, and insulin resistance in VAT were completely abrogated in genetically altered mice lacking Nox2 activity. Conclusions These studies imply that SF, a frequent occurrence in many disorders and more specifically in sleep apnea, is a potent inducer of insulin resistance via activation of oxidative stress and inflammatory pathways, thereby opening the way for therapeutic strategies.
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Affiliation(s)
- S X L Zhang
- Section of Pediatric Sleep Medicine, Department of Pediatrics, The University of Chicago, Chicago, IL, USA
| | - A Khalyfa
- Section of Pediatric Sleep Medicine, Department of Pediatrics, The University of Chicago, Chicago, IL, USA
| | - Y Wang
- Section of Pediatric Sleep Medicine, Department of Pediatrics, The University of Chicago, Chicago, IL, USA
| | - A Carreras
- Section of Pediatric Sleep Medicine, Department of Pediatrics, The University of Chicago, Chicago, IL, USA
| | - F Hakim
- Section of Pediatric Sleep Medicine, Department of Pediatrics, The University of Chicago, Chicago, IL, USA
| | - B A Neel
- Section of Endocrinology, Department of Medicine, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL, USA
| | - M J Brady
- Section of Endocrinology, Department of Medicine, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL, USA
| | - Z Qiao
- Section of Pediatric Sleep Medicine, Department of Pediatrics, The University of Chicago, Chicago, IL, USA
| | - C Hirotsu
- Section of Pediatric Sleep Medicine, Department of Pediatrics, The University of Chicago, Chicago, IL, USA
| | - D Gozal
- Section of Pediatric Sleep Medicine, Department of Pediatrics, The University of Chicago, Chicago, IL, USA
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Ai J, Pascal LE, O'Malley KJ, Dar JA, Isharwal S, Qiao Z, Ren B, Rigatti LH, Dhir R, Xiao W, Nelson JB, Wang Z. Concomitant loss of EAF2/U19 and Pten synergistically promotes prostate carcinogenesis in the mouse model. Oncogene 2013; 33:2286-94. [PMID: 23708662 DOI: 10.1038/onc.2013.190] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 04/02/2013] [Accepted: 04/08/2013] [Indexed: 12/15/2022]
Abstract
Multiple genetic alterations are associated with prostate carcinogenesis. Tumor-suppressor genes phosphatase and tensin homolog deleted on chromosome 10 (Pten) and androgen upregulated gene 19 (U19), which encodes ELL-associated factor 2 (EAF2), are frequently inactivated or downregulated in advanced prostate cancers. Previous studies showed that EAF2 knockout caused tumors in multiple organs and prostatic intraepithelial neoplasia (PIN) in mice. However, EAF2-knockout mice did not develop prostate cancer even at 2 years of age. To further define the roles of EAF2 in prostate carcinogenesis, we crossed the Pten+/- and EAF2+/- mice in the C57/BL6 background to generate EAF2-/-Pten+/-, Pten+/-, EAF2-/- and wild-type mice. The prostates from virgin male mice with the above four genotypes were analyzed at 7 weeks, 19 weeks and 12 months of age. Concomitant loss of EAF2 function and inactivation of one Pten allele induced spontaneous prostate cancer in 33% of the mice. Prostatic tissues from intact EAF2-/- Pten+/- mice exhibited higher levels of phospho-Akt, -p44/42 and microvessel density. Moreover, phospho-Akt remained high after castration. Consistently, there was a synergistic increase in prostate epithelial proliferation in both intact and castrated EAF2-/-Pten+/- mice. Using laser-capture microdissection coupled with real-time reverse transcription-PCR, we confirmed that co-downregulation of EAF2 and Pten occurred in >50% clinical prostate cancer specimens with Gleason scores of 8-9 (n=11), which is associated with poor prognosis. The above findings together demonstrated synergistic functional interactions and clinical relevance of concurrent EAF2 and Pten downregulation in prostate carcinogenesis.
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Affiliation(s)
- J Ai
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - L E Pascal
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - K J O'Malley
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - J A Dar
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - S Isharwal
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Z Qiao
- Department of Urology, The Third Affiliated Hospital of Harbin Medical University, Harbin, China
| | - B Ren
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - L H Rigatti
- Division of Laboratory Animal Resources, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - R Dhir
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - W Xiao
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - J B Nelson
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Z Wang
- 1] Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA [2] Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA [3] University of Pittsburgh Cancer Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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Kang KP, Lee JE, Lee AS, Jung YJ, Lee S, Park SK, Kim W, Pokrywczynska M, Jundzill A, Krzyzanowska S, Flisinski M, Brymora A, Bodnar M, Deptula A, Marszalek A, Manitius J, Drewa T, Kloskowski T, Grosjean F, Esposito V, Torreggiani M, Esposito C, Zheng F, Vlassara H, Striker G, Michael S, Viswanathan P, Ganesh R, Kimachi M, Nishio S, Nakazawa D, Ishikawa Y, Toyoyama T, Satou A, Nakagaki T, Shibasaki S, Atumi T, Gattone V, Peterson R, Zimmerman K, Mega C, Reis F, Teixeira de Lemos E, Vala H, Fernandes R, Oliveira J, Teixeira F, Reis F, Niculae A, Niculae A, Checherita IA, Ciocalteu A, Hamano Y, Udagawa Y, Ueda Y, Yokosuka O, Ogawa M, Satoh M, Kidokoro K, Nagasu H, Nishi Y, Ihoriya C, Kadoya H, Yada T, Channon KM, Sasaki T, Kashihara N, Nyengaard JR, Razga Z, Hartono S, Knudsen B, Grande J, Watanabe M, Watanabe M, Ito K, Abe Y, Ogahara S, Nakashima H, Sato T, Saito T, Shin YT, Choi DE, Na KR, Chang YK, Kim SS, Lee KW, Mace C, Chugh S, Clement L, Tomochika M, Seiji H, Toshio M, Tetsuya K, Takao K, Jaen JC, Sullivan TJ, Miao Z, Zhao N, Berahovich R, Krasinski A, Powers JP, Ertl L, Schall TJ, Han SY, Sun HK, Han KH, Kim HS, Ahn SH, Kokeny G, Gasparics A, Fang L, Rosivall L, Sebe A, Banki NF, Fekete A, Wagner L, Ver A, Degrell P, Prokai A, George R, Szabo A, Baylis C, Vannay A, Tulassay T, Chollet C, Hus-Citharel A, Caron N, Bouby N, Silva K, Rampaso R, Luiz R, De Angelis K, Mostarda CT, Abreu N, Irigoyen MC, Schor N, Rampaso R, Luiz R, Silva K, Montemor J, Higa EMS, Schor N, Nagasu H, Satoh M, Kidokoro K, Kashihara N, Nakayama Y, Fukami K, Obara N, Ando R, Kaida Y, Ueda S, Yamagishi SI, Okuda S, Qin Q, Wang Z, Niu J, Xu W, Qiao Z, Qi W, Gu Y, Zitman-Gal T, Golan E, Green J, Pasmanik-Chor M, Oron-Karni V, Bernheim J, Benchetrit S, Tang RN, Tang RN, Wu M, Gao M, Liu H, Zhang XL, Liu BC. Diabetes - Experimental. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Qiao Z, Ren J, Chen H. Simvastatin Reduces Expression and Activity of Lipoprotein-Associated Phospholipase A2 in the Aorta of Hypercholesterolaemic Atherosclerotic Rabbits. J Int Med Res 2009; 37:1029-37. [PMID: 19761685 DOI: 10.1177/147323000903700407] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Lipoprotein-associated phospholipase A2 (Lp-PLA2) contributes to atherosclerotic plaque instability and subsequent sudden coronary death. Statins are associated with decreased stroke risk and may improve stability of atherosclerotic plaques. The present study investigated the effect of simvastatin on expression of Lp-PLA2 levels in atherosclerotic plaques and on Lp-PLA2 activity in atherosclerotic aortas. Rabbits were a fed chow (control group) or a high-cholesterol diet (atherosclerosis group) for 12 weeks. An additional group on the high-cholesterol diet received simvastatin (5 mg/kg per day) for the last 4 weeks (simvastatin group). Lp-PLA2 activity in plasma and atherosclerotic aortas was significantly higher in the atherosclerosis group than in the control group and, consistent with this, abundant Lp-PLA2 protein was detected in plaques in the atherosclerosis group. Simvastatin significantly reduced Lp-PLA2 activity in plasma and aorta tissue, and reduced Lp-PLA2 protein level in atherosclerotic plaques. Whereas there was no significant difference in total atherosclerotic lesion area between simvastatin and atherosclerosis groups, simvastatin significantly reduced macrophage content, lipid retention and the intima/media ratio but increased the content of smooth muscle cells in atherosclerotic lesions. Thus, statin treatment markedly reduced Lp-PLA2 in both plasma and atherosclerotic plaques. This was associated with attenuation of the local inflammatory response and improved plaque stability.
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Affiliation(s)
- Z Qiao
- Department of Cardiology, Peking University People's Hospital, Beijing, China
| | - J Ren
- Department of Cardiology, Peking University People's Hospital, Beijing, China
| | - H Chen
- Department of Cardiology, Peking University People's Hospital, Beijing, China
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Reinherz EL, Keskin D, Qiao Z, Kim M. Misguiding cues used by HIV to thwart protective immunity. Retrovirology 2006. [PMCID: PMC1716932 DOI: 10.1186/1742-4690-3-s1-s24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Jin L, Ai X, Liu L, Wang Z, Cheng Y, Qiao Z. Testosterone induces apoptosis via Fas/FasL-dependent pathway in bone marrow-derived macrophages. ACTA ACUST UNITED AC 2006; 28:283-93. [PMID: 16845445 DOI: 10.1358/mf.2006.28.5.990201] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 10/24/2022]
Abstract
The detailed mechanisms behind the apoptosis of macrophages induced by testosterone are not clear. In the present study, we tried to delineate the effect of testosterone on the apoptosis of bone marrow-derived macrophages (BMMs) and the function of Fas/FasL (Fas ligand) pathway in this course. BMMs were stimulated with testosterone in the presence of macrophage colony stimulating factor (M-CSF) or without. Flow cytometry was used to quantify the apoptosis of BMMs. Real-time RT-PCR and Western blot were performed to analyze the expression of caspase-8, caspase-3, and poly(ADP-ribose) polymerase (PARP) during the Fas/FasL pathway. Our data showed that testosterone could induce the apoptosis of BMMs, similar to removing growth factor M-CSF from the culture medium. They were both associated with the enhanced expression of caspase-8, caspase-3, and PARP. And the phosphorothioate antisense oligodeoxynucleotides to fas-associated death domain protein (FADD) could block the expression of FADD, which is an upstream factor of caspase-8 in the Fas/FasL pathway. It led to the reduced obvious expression of caspase-8 and decreasing apoptosis of BMMs. These results suggest that the Fas/FasL pathway may play an important role in the testosterone-induced apoptosis of macrophages.
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Affiliation(s)
- L Jin
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, People's Republic of China
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Abstract
Acute hyperleukocytic leukemia [AHL; WBC count >100 x 10(9)/l] is associated with a life-threatening complication. The mechanisms of hyperleukocytosis in acute myeloid leukaemia (AML) remain unclear. However, the interaction of intercellular adhesion molecule-1 (ICAM-1) and lymphocyte function-associated antigen-1 (LFA-1) plays an important role in the adhesion and migration of normal leukocytes and AML cells. Therefore, effects of ICAM-1 and LFA-1 were studied in hyperleukocytic AML. The adhesion of hyperleukocytic AML blasts and human umbilical vein endothelial cells (HUVECs) was significantly increased compared with that of blasts from non-hyperleukocytic AML (WBC < 100 x 10(9)/l). The adhesion of normal neutrophils and HUVECs treated with hyperleukocytic AML blast supernatant was increased significantly. Finally, we determined the ICAM-1 on the surface of HUVECs treated with the supernatant of hyperleukocytic AML blasts and LFA-1 on hyperleukocytic AML blasts by flow cytometry. It showed that the ICAM-1 expression on the surface of the HUVECs treated with hyperleukocytic AML blast supernatant for 24 h could be increased, and the expression of LFA-1 on hyperleukocytic AML was also increased significantly. Our data show that hyperleukocytic AML blasts stimulate the endothelium to secrete more ICAM-1 and promote their own adhesion to vascular endothelium, suggesting that ICAM-1 and LFA-1 may have a role in hyperleukocytic AML.
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Affiliation(s)
- W Zhang
- Department of Haematology, First Hospital of Shanxi Medical University, Taiyuan, China.
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Liu L, Zhao Y, Wang Y, Li Q, Wang Z, Wang L, Qiao Z. Testosterone induced Ca2+ influx in bone marrow-derived macrophages via surface binding sites. ACTA ACUST UNITED AC 2006; 27:623-8. [PMID: 16357946 DOI: 10.1358/mf.2005.27.9.939336] [Citation(s) in RCA: 5] [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: 10/25/2022]
Abstract
The biological activity of testosterone is thought to occur predominantly through binding to the androgen receptor (AR), a member of the nuclear receptor superfamily that functions as a ligand-activated transcription factor. Here, we found that testosterone could induce a rapid rise in the intracellular free Ca2+ concentration ([Ca2+]i) of Fura-2 loaded bone marrow-derived macrophages (BMMs), which was found to be predominantly due to the influx of extracellular Ca2+ through Ni2+-blockable Ca2+ channels in the plasma membrane. However, these effects of testosterone could not be associated with the classical intracellular AR in BMMs, since AR was not detectable using different experimental techniques. Instead, it was found that testosterone could bind to the surface of BMMs by the use of an impermeable testosterone-BSA-FITC, and Ca2+ influx could also be induced by testosterone conjugated to BSA. Our data indicated a novel mode of direct action of testosterone on BMMs, which was not mediated through the classical AR response, but through the binding sites of testosterone on cell surfaces.
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Affiliation(s)
- L Liu
- Medical School, Shanghai Jiaotong University, Huashanlu, Shanghai, People's Republic of China
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Swerdlow AJ, Laing SP, Qiao Z, Slater SD, Burden AC, Botha JL, Waugh NR, Morris AD, Gatling W, Gale EA, Patterson CC, Keen H. Cancer incidence and mortality in patients with insulin-treated diabetes: a UK cohort study. Br J Cancer 2005; 92:2070-5. [PMID: 15886700 PMCID: PMC2361792 DOI: 10.1038/sj.bjc.6602611] [Citation(s) in RCA: 139] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Raised risks of several cancers have been found in patients with type II diabetes, but there are few data on cancer risk in type I diabetes. We conducted a cohort study of 28 900 UK patients with insulin-treated diabetes followed for 520 517 person-years, and compared their cancer incidence and mortality with national expectations. To analyse by diabetes type, we examined risks separately in 23 834 patients diagnosed with diabetes under the age of 30 years, who will almost all have had type I diabetes, and 5066 patients diagnosed at ages 30–49 years, who probably mainly had type II. Relative risks of cancer overall were close to unity, but ovarian cancer risk was highly significantly raised in patients with diabetes diagnosed under age 30 years (standardised incidence ratio (SIR)=2.14; 95% confidence interval (CI) 1.22–3.48; standardised mortality ratio (SMR)=2.90; 95% CI 1.45–5.19), with greatest risks for those with diabetes diagnosed at ages 10–19 years. Risks of cancer at other major sites were not substantially raised for type I patients. The excesses of obesity- and alcohol-related cancers in type II diabetes may be due to confounding rather than diabetes per se.
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Affiliation(s)
- A J Swerdlow
- Section of Epidemiology, Brookes Lawley Building, Institute of Cancer Research, Sutton, Surrey SM2 5NG, UK.
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Abstract
We have investigated the effects of 17beta-estradiol (E2) and testosterone (Te) on the production of proinflammatory factors by nicotine-induced murine macrophage (Ana-1). Ana-1 pretreated with or without E2/Te was challenged with different doses of nicotine at various time points. TNF-alpha, IL-1beta IFN-gamma, and IL-8 in the supernatant of Ana-1 were detected using radioimmunoassay (RIA) or enzyme-linked immunosorbent assay (ELISA). The presence of estrogen and androgen receptors in Ana-1 was detected by reverse transcription polymerase chain reaction (RT-PCR) and Western blotting. E2 could obviously suppress the expression of TNF-alpha and IL-1beta whereas Te could not. There were no obvious changes in the levels of either IL-8 or IFN-gamma in Ana-1 stimulated with nicotine or sex hormones (p>0.05). The antagonist tamoxifen of E2 abolished the effects of E2 on TNF-alpha and IL-1beta whereas the antagonist cyproterone of Te did not alter the effects of Te on Ana-1. Furthermore, RT-PCR and Western blotting showed that both the estrogen receptors (ER-alpha and ER-beta existed in Ana-1; however, androgen receptor (AR) was not detectable. Our data suggested that E2 could regulate the immunoreaction in the nicotine-induced inflammatory process possibly through classic intercellular ER, whereas Te had no significant effect in this process.
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Affiliation(s)
- Y Wang
- School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Swerdlow AJ, Laing SP, Dos Santos Silva I, Slater SD, Burden AC, Botha JL, Waugh NR, Morris AD, Gatling W, Bingley PJ, Patterson CC, Qiao Z, Keen H. Mortality of South Asian patients with insulin-treated diabetes mellitus in the United Kingdom: a cohort study. Diabet Med 2004; 21:845-51. [PMID: 15270787 DOI: 10.1111/j.1464-5491.2004.01253.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
AIMS To investigate mortality in South Asian patients with insulin-treated diabetes and compare it with mortality in non South Asian patients and in the general population. METHODS A prospective cohort study was conducted of 828 South Asian and 27 962 non South Asian patients in the UK with insulin-treated diabetes diagnosed at ages under 50 years. The patients were followed for up to 28 years. Ethnicity was determined by analysis of names. Standardized mortality ratios (SMRs) were calculated, comparing mortality in the cohort with expectations from the mortality experience of the general population. RESULTS SMRs were significantly raised in both groups of patients, particularly the South Asians, and especially in women and subjects with diabetes onset at a young age. The SMRs for South Asian patients diagnosed under age 30 years were 3.9 (95% CI 2.0-6.9) in men and 10.1 (5.6-16.6) in women, and in the corresponding non South Asians were 2.7 (2.6-2.9) and 4.0 (3.6-4.3), respectively. The SMR in women was highly significantly greater in South Asians than non South Asians. The mortality in the young-onset patients was due to several causes, while that in the patients diagnosed at ages 30-49 was largely due to cardiovascular disease, which accounted for 70% of deaths in South Asian males and 73% in females. CONCLUSIONS South Asian patients with insulin-treated diabetes suffer an exceptionally high mortality. Clarification of the full reasons for this mortality are needed, as are measures to reduce levels of known cardiovascular disease risk factors in these patients.
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Affiliation(s)
- A J Swerdlow
- Section of Epidemiology, Institute of Cancer Research, Sutton, Surrey, UK.
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Zhang H, Zhu Z, Liu L, Guo D, Jiang T, Wang L, Qiao Z. Upregulation of Fas and FasL expression in testosterone-induced apoptosis of macrophages. ACTA ACUST UNITED AC 2004; 25:779-84. [PMID: 14735224 DOI: 10.1358/mf.2003.25.10.793325] [Citation(s) in RCA: 5] [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: 10/25/2022]
Abstract
To the best of the authors' knowledge, there have been few reports on the effect of testosterone on the apoptosis of macrophages. In this report, we studied the effect of testosterone on the apoptosis of bone marrow-derived macrophages (BMMs) and the function of the Fas/Fas ligand (FasL) system in the process. Results showed that testosterone treatment in vitro at the physiological concentration of 10 nM did not induce the apoptosis of BMMs. However, BMMs underwent apoptosis when treated at higher concentrations of testosterone (100, 200 and 400 nM). Testosterone-induced apoptosis was associated with the enhanced expression of Fas, FasL, and caspase-8. These data suggest that the Fas/FasL system may play an important role in the testosterone-induced apoptosis of macrophages.
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Affiliation(s)
- H Zhang
- Division of Parasitology, School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, PR China
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Abstract
Dexras1 is a steroid hormone-induced Ras family G protein that acts as a receptor-independent activator of signaling by Gi/o family heterotrimeric G proteins. We examined the effects of Dexras1 on the activity of adenylyl cylase, a target of inhibitory regulation by Gialpha x GTP. Constitutively active Gsalpha (Q227L) increased cAMP levels 43-fold above baseline, and Dexras1 expression inhibited cAMP levels by 61% (P < 0.01). Dexras1 mediated inhibition of adenylyl cyclase was blocked by treatment pertussis toxin or by co-expression of RGS4, but was not inhibited by with dominant-interfering (G203T or G204A) mutants of Gi alpha2. Dexras1 decreased forskolin-stimulated CREB activation (P < 0.01) and this activity was also inhibited by co-expression of RGS4. These findings indicate that Dexras1 expression leads to ligand-independent activation of both Gialpha- and G(beta)gamma-dependent arms of the Gi signaling cascade, and suggest that Dexras1 may exert physiologically relevant inhibitory effects on the cAMP-PKA-CREB.
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Affiliation(s)
- T E Graham
- New Mexico Veterans Affairs Health Care System, Medical Service (111), Departments of Medicine and Biochemistry/Molecular Biology, University of New Mexico School of Medicine, 1501 San Pedro Blvd. SE, Albuquerque, NM 87108, USA
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Ren W, Qiao Z, Wang H, Zhu L, Zhang L, Lu Y, Zhang Z, Wang Z. Molecular basis of Fas and cytochrome c pathways of apoptosis induced by tartary buckwheat flavonoid in HL-60 cells. Methods Find Exp Clin Pharmacol 2003; 25:431-6. [PMID: 12949627 DOI: 10.1358/mf.2003.25.6.769647] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In a previous study, we showed that tartary buckwheat flavonoid (TBF) induced HL-60 leukemic cell apoptosis, most likely via a caspase 3 activating pathway. The aim of this study was to further investigate the molecular mechanisms involved in TBF-induced apoptosis of HL-60 cells. Thus, death receptor Fas expression on HL-60 cells was detected by flow cytometry (FCM). We also studied the effect of TBF on intranuclear DNA binding activity of NF-kappaB, as well as release of mitochondrial cytochrome c into the cytosol in HL-60 cells by FCM. The results suggest that TBF-induced apoptosis of HL-60 cells may be stimulated by the release of cytochrome c to the cytosol, upregulation of Fas expression on the cell surface, and through a caspase-3-dependent mechanism. Furthermore, TBF-induced apoptosis may be partly regulated through the inactivation of NF-kappaB in HL-60 cells. The induction of apoptosis by TBF may be attributed to its cancer chemopreventive activity.
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Affiliation(s)
- W Ren
- Department of Hematology, Shanxi Medical University, Shanxi, P.R. China
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Qiao Z, Guo Z, Yin G, Yin L, Zhao J, Wunderlich F. Testosterone inhibits apoptosis of Leishmania donovani-infected macrophages. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 17:21-4. [PMID: 12563810] [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
AIM Investigate the effect of the male sex hormone, testosterone (Te), on apoptosis of bone marrow derived macrophages (BMMs) from female C57BL/6j mice METHODS Propidium iodide (PI) staining and transmission electron microscopy (TEM) techniques were used to investigate apoptosis specific-morphological changes. BMMs derived from Te-treated mice and Oil-treated mice were challenged with Leishmania donovani (L. d.), Oligo-nucleosomal DNA were extracted 24 h post infection to detect apoptosis. RESULTS The removal of M-CSF from the medium could induce BMM apoptofsis. And the DNA fragmentation assay also indicated that: 1. there was no difference in the amount of apoptotic cells between Te and Oil group; 2. Te + L. d. group had significantly less dead cells than Oil + L. d. group demonstrating that Te could prevent apoptosis of macrophage infected with L. d. to a greater extent. CONCLUSION Te inhibits apoptosis of the macrophages infected with L. d., however, this inhibition did not occur in the macrophages uninfected with L. d. Te-induced macrophage apoptosis-inhibition may play an important role in Te-induced immunosuppression.
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Affiliation(s)
- Z Qiao
- Laboratory of Molecular Biology of Shanxi Medical University, Taiyuan 030001
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Yin G, Guo Z, Yin L, Zhao J, Qiao Z, Frank W. Effect of testosterone on Leishmania donovani infection levels of murine bone marrow derived-macrophages. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2002; 16:251-5. [PMID: 12078252] [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: 02/25/2023]
Abstract
AIM To investigate the effect of the male sex hormone, testosterone (Te), on Leishmania donovani infection levels of bone marrow derived macrophages(BMMs) from female mice of strain C57BL/6J. METHODS After three weeks of Te-treatment, the BMMs were isolated, challenged with L. donovani at a ratio of 10 to 1 promastigotes per macrophage, and the infection levels of different time points were monitored by Giemsa staining. RESULTS BMMs from Te-treated mice had a significantly increased initial uptake(3 h post infection, P < 0.05) of promastigotes and carried heavier infection levels at all time points(24 h, 48 h, 72 h post infection, P < 0.01), compared with those from oil treated controls. CONCLUSION Te can increase L. donovani infection levels of BMMs, being possibly related to Te-induced immunosuppression.
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Affiliation(s)
- G Yin
- Division of Parasitology of Shanxi Medical University, Taiyuan 030001
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Zhang X, Wang L, Zhang H, Guo D, Zhao J, Qiao Z, Qiao J. The effects of cigarette smoke extract on the endothelial production of soluble intercellular adhesion molecule-1 are mediated through macrophages, possibly by inducing TNF-alpha release. Methods Find Exp Clin Pharmacol 2002; 24:261-5. [PMID: 12168501 DOI: 10.1358/mf.2002.24.5.802302] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Cigarette smoke (CS) is a major risk factor for many human diseases, although the underlying mechanisms are not clearly understood. This study was undertaken to investigate the effect of a water-soluble CS extract (CSE) on soluble intercellular adhesion molecule-1 (sICAM-1) production by human umbilical vein endothelial cells (HUVEC) mediated through ANA-1 macrophages. First, macrophages were incubated with or without CSE, and the supernatants collected at different time points were used to measure the levels of tumor necrosis factor-alpha (TNF-alpha) and sICAM-1 by enzyme-linked immunosorbent assay (ELISA); and second, HUVEC were cultured with CSE, a vehicle, or ANA-1 supernatants (collected at different time points) and the sICAM-1 levels in the supernatants were measured by ELISA at 24 h. The results showed that: i) CSE showed no effect on the production of sICAM-1 by HUVEC; ii) sICAM-1, in unstimulated or CSE-stimulated ANA-1 supernatants collected at different time points, was under the detectable level; iii) CSE-stimulated ANA-1 supernatants collected at 3 or 6 h showed no effect on sICAM-1 production in HUVEC, while those collected at 12 and 24 h significantly increased sICAM-1 production (p < 0.02 and p < 0.005, respectively); iv) no significant difference in TNF-alpha levels was detected between unstimulated and CSE-stimulated macrophage supernatants collected at 3 and 6 h, however, higher levels of TNF-alpha were found in CSE-stimulated supernatants collected at 12 and 24 h (p < 0.05 and p < 0.002, respectively); and v) a significant correlation (r = 0.9693, p < 0.001) was found between the levels of TNF-alpha in CSE-stimulated ANA-1 supernatants and those of related sICAM-1 production in HUVEC. These findings indicate that CSE indirectly increases the production of sICAM-1 in HUVEC by activating macrophages, which possibly induces the release of TNF-alpha from them, which in turn enhances the production of sICAM-1 from HUVEC.
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Affiliation(s)
- X Zhang
- Laboratory of Molecular Biology, 1st Hospital, Taiyuan, P.R. China
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Zhang X, Wang L, Dou Y, Zhao J, Jiang T, Qiao Z, Qiao J. Testosterone and estradiol modulate TNF-alpha-induced expression of adhesion molecules in endothelial cells. Methods Find Exp Clin Pharmacol 2002; 24:125-30. [PMID: 12087872 DOI: 10.1358/mf.2002.24.3.802295] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Cytokine-activated endothelial expression of adhesion molecules plays an important role in immune responses. In the present study, we investigated the influences of testosterone and 17 beta-estradiol on tumor necrosis factor-alpha (TNF-alpha)-induced expression of adhesion molecules in human umbilical vein endothelial cells (HUVEC). HUVEC were incubated with TNF-alpha, testosterone or 17 beta-estradiol separately, or in a combination of TNF-alpha plus testosterone or 17 beta-estradiol. The expression of E-selectin, vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) was evaluated at 3, 6, 12 and 24 h following exposure by flow cytometric analysis. The results showed that although testosterone or 17 beta-estradiol did not affect the expression of these adhesion molecules in unstimulated HUVEC, both of them transiently increased the expression of E-selectin and VCAM-1 in TNF-alpha stimulated HUVEC. Neither testosterone nor 17 beta-estradiol affected the expression of ICAM-1 induced by TNF-alpha. It is concluded that both testosterone and 17 beta-estradiol increase TNF-alpha-induced expression of E-selectin and VCAM-1 in endothelial cells and these facts might indicate a mechanism by which gonadal hormones can indirectly enhance immune responses.
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Affiliation(s)
- X Zhang
- Laboratory of Molecular Biology, Shanxi Medical University, Taiyuan, P.R. China
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Zhang X, Zhou H, Song S, Qiao Z, Yang L, Hu Y. [The impact of arsenic trioxide or all-trans retinoic acid treatment on coagulopathy in acute promyelocytic leukemia]. Zhonghua Nei Ke Za Zhi 2001; 40:829-33. [PMID: 16206674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
OBJECTIVE To study the effect of arsenic trioxide (As2O3) or all-trans retinoic acid (ATRA) on coagulopathy in patients with acute promyelocytic leukemia (APL), and the mechanism of hemorrhage in these patients. METHODS Thrombomodulin (TM) or tissue factor (TF) transcription of mRNA of freshly isolated bone marrow blast from APL patients was detected by semi-quantitative RT-PCR. The parameters of coagulation and cell procoagulation activity (PCA) were assessed in plasmic levels. Bleeding symptom was observed during As2O3 or ATRA treatment. RESULTS TM expression in the APL cell surface was significantly upregulated from (14.31 +/- 1.60) ng/10(7) to (21.61 +/- 6.82) ng/10(7) cells. The levels of P-selectin, soluble fibrin monomer complex (SFMC) and D-dimer (D-D) decreased after ATRA or As2O3 treatment. Abnormal high expression of TF in APL cell was downregulated in patients treated with ATRA or As2O3. The expression level was (14.81 +/- 6.23) ng/L before treatment, but undetected after 20 days of treatment. In addition, the membrane PCA of fresh APL cells was predominantly FVII-dependent after ATRA or As2O3 treatment. Bleeding symptom was ameliorated during As2O3 or ATRA treatment. CONCLUSION Bleeding symptom was controlled in patients with APL after As2O3 or ATRA treatment.
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Affiliation(s)
- X Zhang
- Department of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430032, China
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Dong W, Xu J, Qiao Z, Wang N, Yu R. [Expression and significance of serum soluble tumor necrosis factor receptor-I in patients with head and neck neoplasm]. Zhonghua Er Bi Yan Hou Ke Za Zhi 2001; 36:468-70. [PMID: 12761967] [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: 04/20/2023]
Abstract
OBJECTIVE To investigate the expression and significance of serum soluble tumor necrosis factor receptor-I (sTNFR-I) in patients with head and neck neoplasms. METHOD The study was undertaken to detect serum sTNFR-I levels in 160 head neck cancer patients (including 12 cases of malignant lymphoma, 62 nasopharyngeal cancer, 56 laryngeal cancer, 22 hypopharyngeal cancer, 3 maxillary cancer and 5 thyrophyma), using Sandwich enzyme-linked immuno-sorbent assay. RESULTS The sTNFR-I levels were significantly higher in patients with carcinoma than those of healthy controls (P < 0.01). The sTNFR-I levels of malignant lymphoma and nasopharyngeal carcinoma were the highest among patients with head and neck neoplasm. The correlations between the serum sTNFR-I levels and the stages of head and neck neoplasms and other laboratory parameters were also analyzed and discussed. CONCLUSION The serum sTNFR-I levels may reflect the human immunity function, therefore it can be used as a helpful indicator to evaluate the therapeutic effect and monitor the relapses and metastasis of cancer.
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Affiliation(s)
- W Dong
- Department of Otorhinolaryngology, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China. dong
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Abstract
Cancer incidence in the Falkland Islands, 1989-2000, was compared with rates in England and Wales, from which most Islanders originate. Colon and rectum cancer incidence was significantly raised 1989-93 but greatly reduced after 1994, when colonoscopic screening in high-risk families and sigmoidoscopic screening in the general population were introduced.
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Affiliation(s)
- A J Swerdlow
- Section of Epidemiology, Institute of Cancer Research, D. Block, Cotswold Rd, Sutton, Surrey, SM2 5NG, UK
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Ren W, Qiao Z, Wang H, Zhu L, Zhang L, Lu Y, Cui Y, Zhang Z, Wang Z. Tartary buckwheat flavonoid activates caspase 3 and induces HL-60 cell apoptosis. Methods Find Exp Clin Pharmacol 2001; 23:427-32. [PMID: 11838316 DOI: 10.1358/mf.2001.23.8.662129] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
It has been proposed that flavonoids may have potential as anticancer agents. In this study, we showed that tartary buckwheat flavonoid (TBF) obviously inhibits the growth of human acute myelogenous leukemia (AML) HL-60 cells by MTT assay. The inhibitory effect of TBF on the proliferation of HL-60 cells is related to the induction of apoptosis, which is confirmed by DNA ladder formation on gel electrophoresis and apoptosis morphological changes under light microscope. Furthermore, HL-60 cells undergo rapid apoptosis upon treatment with TBF, as indicated by increased annexin V binding capacity and caspase 3 activation with flow cytometric analysis. Thus, our data provide a potential mechanism for the chemopreventive activity of tartary buckwheat flavonoid and suggest that it may have a potentially therapeutic role for human leukemia.
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Affiliation(s)
- W Ren
- Department of Hematology, Shanxi Medical University, Shanxi University, Taiyuan, Shanxi, P.R. China
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Affiliation(s)
- H Zhang
- Laboratory of Molecular Biology, Shanxi Medical University, Taiyuan, PR China
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Yamada Y, Yoshimi N, Hirose Y, Hara A, Shimizu M, Kuno T, Katayama M, Qiao Z, Mori H. Suppression of occurrence and advancement of beta-catenin-accumulated crypts, possible premalignant lesions of colon cancer, by selective cyclooxygenase-2 inhibitor, celecoxib. Jpn J Cancer Res 2001; 92:617-23. [PMID: 11429049 PMCID: PMC5926764 DOI: 10.1111/j.1349-7006.2001.tb01139.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Suppression of occurrence and advancement of premalignant lesions is important for cancer prevention. Our previous studies clarified that beta-catenin-accumulated crypts, independent of aberrant crypt foci (ACF), are probably direct precursors of colon cancers in rats. Here we investigated the effects of a selective cyclooxygenase-2 inhibitor, celecoxib, on the development of beta-catenin-accumulated crypts in comparison with those on ACF. Male F344 rats were divided into 4 groups. Groups 1 - 3 were administered azoxymethane (AOM) s.c. at a dose of 15 mg / kg body weight, once weekly for 3 weeks to induce beta-catenin-accumulated crypts. Groups 2 and 3 also received experimental diet containing celecoxib (500 and 1500 ppm, respectively) for 8 weeks, starting a week before the first dosing of AOM. At termination, the frequency and crypt multiplicity (number of crypts / lesion) of beta-catenin-accumulated crypts of groups 2 and 3 were significantly less than that of group 1. Furthermore, numbers of silver-stained nucleolar organizer regions (AgNORs) / nucleus in beta-catenin-accumulated crypts were also decreased by exposure to celecoxib. In this study, celecoxib had greater effects on the frequency and growth of beta-catenin-accumulated crypts than on those of ACF. These findings represent additional evidence that beta-catenin-accumulated crypts are premalignant lesions of colon cancer. The results also suggest that beta-catenin-accumulated crypts could be a novel target for evaluation of possible chemopreventive agents against colon carcino-genesis, and indicate that possible chemopreventive effects of celecoxib on the initial stage of colon carcinogenesis may be related to modulation of cell proliferation activity in such early lesions.
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Affiliation(s)
- Y Yamada
- Department of Pathology, Gifu University School of Medicine, 40 Tsukasa-machi, Gifu 500-8705, Japan.
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Zhang X, Wang L, Zhang H, Guo D, Qiao Z, Qiao J. Estrogen inhibits lipopolysaccharide-induced tumor necrosis factor-alpha release from murine macrophages. Methods Find Exp Clin Pharmacol 2001; 23:169-73. [PMID: 11676224 DOI: 10.1358/mf.2001.23.4.634640] [Citation(s) in RCA: 22] [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] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
During their reproductive years, female have a lower risk for atherosclerosis as compared with age-matched males, although the mechanisms behind this are not clearly understood. Cytokines, including TNF-alpha play an important role in the pathogenesis of atherosclerosis. We therefore evaluated whether or not there was any difference between 17 beta-estradiol and testosterone in modulating TNF-alpha release from murine bone marrow-derived macrophages (BMM) in vitro. Cells were incubated with or without physiological concentrations (10(-10)-10(-8) M) of 17 beta-estradiol or testosterone for 48 h, followed by an additional 6 h in the absence or presence of lipopolysaccharide (LPS; 10 micrograms/ml). The amount of TNF-alpha released into the culture medium was determined with radioimmunoassay. We found that 17 beta-estradiol or testosterone alone did not affect TNF-alpha release from BMM as compared to untreated controls. Preincubation with 17 beta-estradiol significantly inhibited LPS-induced TNF-alpha release by 18.15% (p < 0.05). 25.28% (p < 0.05) and 40.83% (p < 0.01) for 10(-10), 10(-9) and 10(-8) M of 17 beta-estradiol, respectively, as compared to LPS alone. In contrast, testosterone tested for 3 concentrations did not significantly effect TNF-alpha release induced by LPS. The results indicate that 17 beta-estradiol, but not testosterone, inhibits TNF-alpha release from LPS-stimulated macrophages, which may be one of the mechanisms by which estrogen protects against atherosclerosis.
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Affiliation(s)
- X Zhang
- Laboratory of Molecular Biology, Shanxi Medical University, Taiyuan, P.R. China.
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Yoshimi N, Matsunaga K, Katayama M, Yamada Y, Kuno T, Qiao Z, Hara A, Yamahara J, Mori H. The inhibitory effects of mangiferin, a naturally occurring glucosylxanthone, in bowel carcinogenesis of male F344 rats. Cancer Lett 2001; 163:163-70. [PMID: 11165750 DOI: 10.1016/s0304-3835(00)00678-9] [Citation(s) in RCA: 131] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Mangiferin, 1,3,6,7-tetrahydroxyxanthone-C2-beta-D-glucoside, is one of xanthone derivatives and C-glucosylxanthones, is widely distributed in higher plants and is one of constituents of folk medicines. Recent studies showed that mangiferin has a potential as an anti-oxidant and an anti-viral agent. In this study, we examined the effects of mangiferin in rat colon carcinogenesis induced by chemical carcinogen, azoxymethane (AOM). We performed two experiments: a short-term assay to investigate the effects of mangiferin on the development of preneoplastic lesions by AOM, aberrant crypt foci (ACF), and the following long-term assay for the influence of mangiferin on tumorigenesis induced by AOM. In the short-term assay, 0.1% mangiferin in a diet significantly inhibited the ACF development in rats treated with AOM compared to rats treated with AOM alone (64.6+/-22.0 vs. 108.3+/-43.0). In the long-term assay, the group treated with 0.1% mangiferin in initiation phase of the experimental protocol had significantly lower incidence and multiplicity of intestinal neoplasms induced by AOM (47.3 and 41.8% reductions of the group treated with AOM alone for incidence and multiplicity, respectively). In addition, the cell proliferation in colonic mucosa was reduced in rats treated with mangiferin (65-85% reductions of the group treated with AOM alone). These results suggest that mangiferin has potential as a naturally-occurring chemopreventive agent.
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Affiliation(s)
- N Yoshimi
- Department of Pathology, Gifu University School of Medicine, 40 Tsukasa-machi, Gifu 500-8705, Japan.
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Swerdlow AJ, Reddingius RE, Higgins CD, Spoudeas HA, Phipps K, Qiao Z, Ryder WD, Brada M, Hayward RD, Brook CG, Hindmarsh PC, Shalet SM. Growth hormone treatment of children with brain tumors and risk of tumor recurrence. J Clin Endocrinol Metab 2000; 85:4444-9. [PMID: 11134091 DOI: 10.1210/jcem.85.12.7044] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
GH is increasingly used for treatment of children and adults. It is mitogenic, however, and there is therefore concern about its safety, especially when used to treat cancer patients who have become GH deficient after cranial radiotherapy. We followed 180 children with brain tumors attending three large hospitals in the United Kingdom and treated with GH during 1965-1996, and 891 children with brain tumors at these hospitals who received radiotherapy but not GH. Thirty-five first recurrences occurred in the GH-treated children and 434 in the untreated children. The relative risk of first recurrence in GH-treated compared with untreated patients, adjusted for potentially confounding prognostic variables, was decreased (0. 6; 95% confidence interval, 0.4-0.9) as was the relative risk of mortality (0.5; 95% confidence interval, 0.3-0.8). There was no significant trend in relative risk of recurrence with cumulative time for which GH treatment had been given or with time elapsed since this treatment started. The relative risk of mortality increased significantly with time since first GH treatment. The results, based on much larger numbers than previous studies, suggest that GH does not increase the risk of recurrence of childhood brain tumors, although the rising trend in mortality relative risks with longer follow-up indicates the need for continued surveillance.
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Affiliation(s)
- A J Swerdlow
- Section of Epidemiology, Institute of Cancer Research, Sutton, Surrey SM2 5NG
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