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Gong Z, Da W, Tian Y, Zhao R, Qiu S, Wu Q, Wen K, Shen L, Zhou R, Tao L, Zhu Y. Exogenous melatonin prevents type 1 diabetes mellitus-induced bone loss, probably by inhibiting senescence. Osteoporos Int 2022; 33:453-466. [PMID: 34519833 PMCID: PMC8813725 DOI: 10.1007/s00198-021-06061-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 06/30/2021] [Indexed: 12/31/2022]
Abstract
UNLABELLED Exogenous melatonin inhibited the senescence of preosteoblast cells in type 1 diabetic (T1D) mice and those cultured in high glucose (HG) by multiple regulations. Exogenous melatonin had a protective effect on diabetic osteoporosis, which may depend on the inhibition of senescence. INTRODUCTION Senescence is thought to play an important role in the pathophysiological mechanisms underlying diabetic bone loss. Increasing evidence has shown that melatonin exerts anti-senescence effects. In this study, we investigated whether melatonin can inhibit senescence and prevent diabetic bone loss. METHODS C57BL/6 mice received a single intraperitoneal injection of 160 mg/kg streptozotocin, followed by the oral administration of melatonin or vehicle for 2 months. Then, tissues were harvested and subsequently examined. MC3T3-E1 cells were cultured under HG conditions for 7 days and then treated with melatonin or not for 24 h. Sirt1-specific siRNAs and MT1- or MT2-specific shRNA plasmids were transfected into MC3T3-E1 cells for mechanistic study. RESULTS The total protein extracted from mouse femurs revealed that melatonin prevented senescence in T1D mice. The micro-CT results indicated that melatonin prevented bone loss in T1D mice. Cellular experiments indicated that melatonin administration prevented HG-induced senescence, whereas knockdown of the melatonin receptors MT1 or MT2 abolished these effects. Sirt1 expression was upregulated by melatonin administration but significantly reduced after MT1 or MT2 was knocked down. Knockdown of Sirt1 blocked the anti-senescence effects of melatonin. Additionally, melatonin promoted the expression of CDK2, CDK4, and CyclinD1, while knockdown of MT1 or MT2 abolished these effects. Furthermore, melatonin increased the expression of the polycomb repressive complex (PRC), but knockdown of MT1 or MT2 abolished these effects. Furthermore, melatonin increased the protein levels of Sirt1, PRC1/2 complex-, and cell cycle-related proteins. CONCLUSION This work shows that melatonin protects against T1D-induced bone loss, probably by inhibiting senescence. Targeting senescence in the investigation of diabetic osteoporosis may lead to novel discoveries.
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Affiliation(s)
- Z Gong
- Department of Orthopedics, The First Hospital of China Medical University, Shenyang, 110001, China
| | - W Da
- Department of Orthopedics, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Y Tian
- Department of Orthopedics, The First Hospital of China Medical University, Shenyang, 110001, China
| | - R Zhao
- Department of Orthopedics, The First Hospital of China Medical University, Shenyang, 110001, China
| | - S Qiu
- Department of Orthopedics, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Q Wu
- Department of Orthopedics, The First Hospital of China Medical University, Shenyang, 110001, China
| | - K Wen
- Department of Orthopedics, The First Hospital of China Medical University, Shenyang, 110001, China
| | - L Shen
- Department of Orthopedics, The First Hospital of China Medical University, Shenyang, 110001, China
| | - R Zhou
- Department of Orthopedics, The First Hospital of China Medical University, Shenyang, 110001, China
| | - L Tao
- Department of Orthopedics, The First Hospital of China Medical University, Shenyang, 110001, China.
| | - Y Zhu
- Department of Orthopedics, The First Hospital of China Medical University, Shenyang, 110001, China.
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Xu FL, Jiang YJ, Yang MF, Da W, Yang XW, Shi TY. Three first records of stick insects attacking plants (Inseect: Phasmida) in Tibet. BRAZ J BIOL 2021; 83:e245862. [PMID: 34495148 DOI: 10.1590/1519-6984.245862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 05/31/2021] [Indexed: 11/21/2022] Open
Abstract
Except for a few stick insects that are economically valuable, most species be considered to be forest pests, so it is extremely important to obtain plant host-use information of more stick insects. In this paper, the plant hosts of three species of stick insects were recorded for the first time. We also discovered these stick insects can feed upon the flowers or leaves of plants. Lopaphus unidentatus (Chen & He, 1995) (Phasmida: Lonchodidae) attacked Hypericum choisianum Wall. ex N. Robson, 1973 (Hypericaceae), Leurophasma dolichocercum Bi, 1995 (Phasmida: Aschiphasmatidae) attacked Antenoron filiforme (Thunb.) Roberty & Vautier, 1964 (Polygonaceae) and Megalophasma granulatum Bi, 1995 (Phasmida: Lonchodidae) attacked Debregeasia orientalis C. J. Chen, 1991 (Urticaceae). Finally, we were lucky enough to also obtain photographs of them mating and feeding.
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Affiliation(s)
- F L Xu
- Institute of Entomology, Guizhou University, Guiyang, Guizhou, P.R. China.,College of Forestry, Guizhou University, Guiyang, Guizhou, P.R. China.,Research Center for Biodiversity and Natural Conservation, Guizhou University, Guiyang, Guizhou, P.R. China
| | - Y J Jiang
- College of Forestry, Guizhou University, Guiyang, Guizhou, P.R. China.,Research Center for Biodiversity and Natural Conservation, Guizhou University, Guiyang, Guizhou, P.R. China
| | - M F Yang
- Institute of Entomology, Guizhou University, Guiyang, Guizhou, P.R. China
| | - W Da
- Tibet Plateau Institute of Biology, Lhasa, Xizang Autonomous Prefecture, P.R. China
| | - X W Yang
- College of Forestry, Guizhou University, Guiyang, Guizhou, P.R. China
| | - T Y Shi
- College of Forestry, Guizhou University, Guiyang, Guizhou, P.R. China
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Zhang XL, Ha BB, Wang SJ, Chen ZJ, Ge JY, Long H, He W, Da W, Nian XM, Yi MJ, Zhou XY, Zhang PQ, Jin YS, Bar-Yosef O, Olsen JW, Gao X. The earliest human occupation of the high-altitude Tibetan Plateau 40 thousand to 30 thousand years ago. Science 2019; 362:1049-1051. [PMID: 30498126 DOI: 10.1126/science.aat8824] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Accepted: 10/10/2018] [Indexed: 02/04/2023]
Abstract
The Tibetan Plateau is the highest and one of the most demanding environments ever inhabited by humans. We investigated the timing and mechanisms of its initial colonization at the Nwya Devu site, located nearly 4600 meters above sea level. This site, dating from 40,000 to 30,000 years ago, is the highest Paleolithic archaeological site yet identified globally. Nwya Devu has yielded an abundant blade tool assemblage, indicating hitherto-unknown capacities for the survival of modern humans who camped in this environment. This site deepens the history of the peopling of the "roof of the world" and the antiquity of human high-altitude occupations more generally.
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Affiliation(s)
- X L Zhang
- Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China.,CAS Center for Excellence in Life and Paleoenvironment, Beijing 100044, China
| | - B B Ha
- Tibetan Cultural Relics Conservation Institute, Lhasa 850000, Tibet Autonomous Region, China
| | - S J Wang
- Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China.,CAS Center for Excellence in Life and Paleoenvironment, Beijing 100044, China
| | - Z J Chen
- Tibetan Cultural Relics Conservation Institute, Lhasa 850000, Tibet Autonomous Region, China
| | - J Y Ge
- Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China. .,CAS Center for Excellence in Life and Paleoenvironment, Beijing 100044, China.,University of the Chinese Academy of Sciences, Beijing 100049, China
| | - H Long
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
| | - W He
- Tibetan Cultural Relics Conservation Institute, Lhasa 850000, Tibet Autonomous Region, China
| | - W Da
- Nagqu Prefecture Cultural Relics Bureau, Nagqu 852000, Tibet Autonomous Region, China
| | - X M Nian
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
| | - M J Yi
- School of History, Renmin University of China, Beijing 100872, China
| | - X Y Zhou
- Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China.,CAS Center for Excellence in Life and Paleoenvironment, Beijing 100044, China.,University of the Chinese Academy of Sciences, Beijing 100049, China
| | - P Q Zhang
- Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China.,CAS Center for Excellence in Life and Paleoenvironment, Beijing 100044, China.,University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Y S Jin
- Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China.,CAS Center for Excellence in Life and Paleoenvironment, Beijing 100044, China.,University of the Chinese Academy of Sciences, Beijing 100049, China
| | - O Bar-Yosef
- Department of Anthropology, Harvard University, Cambridge, MA 02138, USA
| | - J W Olsen
- School of Anthropology, University of Arizona, Tucson, AZ 85721, USA.,Institute of Archaeology and Ethnography, Siberian Branch, Russian Academy of Sciences, Novosibirsk 630090, Russian Federation
| | - X Gao
- Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China. .,CAS Center for Excellence in Life and Paleoenvironment, Beijing 100044, China.,University of the Chinese Academy of Sciences, Beijing 100049, China
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Li B, Wang L, Lu Q, Da W. Liver injury attenuation by curcumin in a rat NASH model: an Nrf2 activation-mediated effect? Ir J Med Sci 2014; 185:93-100. [PMID: 25385666 DOI: 10.1007/s11845-014-1226-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [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: 04/08/2014] [Accepted: 11/01/2014] [Indexed: 02/06/2023]
Abstract
AIM Nuclear factor-erythroid 2-related factor-2 (Nrf2) acts as a defense system in the development of nonalcoholic steatohepatitis (NASH). Curcumin is a phenolic compound with lipid regulatory, anti-oxidative, anti-inflammatory and anti-tumorigenic properties that is beneficial in defending against NASH and was recently proved to be an Nrf2 activator. The aim of this study was to evaluate whether Nrf2 activation could be involved in NASH mitigation by curcumin. METHODS Hepatic, metabolic, and inflammatory parameters, along with hepatic Nrf2 protein expression were explored in adult Sprague-Dawley rats developing high-fat-diet-induced NASH and submitted to curcumin gavage for 6 weeks. RESULTS Curcumin administration led to lower degrees of hepatic steatosis and inflammation; lower levels of serum aminotransferases, lipids, and homeostasis model assessment of insulin resistance; and lower serum and hepatic contents of tumor necrosis factor-α (TNF-α), interleukin-6, and malondialdehyde. In contrast, higher hepatic contents of glutathione, heme oxygenase-1 and superoxide dismutase were observed in rats with curcumin. Moreover, Nrf2 expression in liver cell nuclei was significantly higher in rats with curcumin. CONCLUSIONS Curcumin can prevent and ameliorate NASH via lipid reduction, improve insulin resistance, improve anti-inflammatory, and have antioxidant effects, possibly related to its activation of Nrf2.
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Affiliation(s)
- B Li
- Department of Gastroenterology, Jiaxing Second Hospital, 1518 North Ring Road, Jiaxing, 314000, Zhejiang, People's Republic of China
| | - L Wang
- Department of Gastroenterology, The Sixth People's Hospital Affiliated to Shanghai Jiaotong University, 600 Yi Shan Road, Shanghai, 200233, People's Republic of China.
| | - Q Lu
- Department of Gastroenterology, Jiaxing Second Hospital, 1518 North Ring Road, Jiaxing, 314000, Zhejiang, People's Republic of China
| | - W Da
- Department of Gastroenterology, The Sixth People's Hospital Affiliated to Shanghai Jiaotong University, 600 Yi Shan Road, Shanghai, 200233, People's Republic of China
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Chen S, Jiang B, Da W, Gong M, Guan M. O-37 Treatment of patients withmyelodysplastic syndrome with cyclosporin A. Leuk Res 2005. [DOI: 10.1016/s0145-2126(05)80036-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Jiang Q, Da W, Ou Y. [Experimental study of interleukin-12 gene vaccines in the treatment of low-load malignant lymphoma (EL4)]. Zhonghua Xue Ye Xue Za Zhi 2001; 22:565-8. [PMID: 11855142] [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: 02/23/2023]
Abstract
OBJECTIVE Two kinds of murine interleukin-12 (mIL-12) fusion gene vaccines were used to treat the murine low-load malignant T cell lymphoma EL4 as minimal residual disease (MRD) model. METHODS C57BL/6 synergistical mice were subcutaneously inoculated with 1 x 10(6) wild-type (wt) EL4 tumor cells as low-load lymphoma model treated with two mIL-12 gene vaccines. Package cell line PA317/12 producing mIL-12 retrovirus (RV) was used as in vivo vaccine and EL4 tumor cells transferred with mIL-12 gene as ex vivo vaccine. RESULTS In both mIL-12 gene vaccine-treated groups, there was no tumor growth in 50% mice 60 days after inoculation. Nine of these no tumor growth mice were re-challenged with 5 x 10(5) wt EL4 cells, and 5 of them survived without tumors in another 60 days. All control mice died with tumors within one month after inoculation. Among those developed tumors in both vaccine-treated groups, the development of tumors was delayed, the survival period prolonged (P < 0.01), and the tumors size at death smaller (P < 0.05) as compared with the controls. In the long-survived vaccine-treated mice, no residual tumor cells were found by morphological examination. CONCLUSION Both IL-12 gene vaccines can efficiently eliminate wt EL4 MRD in C57BL/6 mice.
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Affiliation(s)
- Q Jiang
- Department of Hematology, Lanzhou General Hospital, Lanzhou 730050, China
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Wang H, Qian Q, Cao H, Wei L, Qu Z, Da W, Guo Y, Wu M. [Construction and application of retroviral vector carrying green fluorescent protein]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 1998; 15:232-4. [PMID: 9691133] [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: 02/08/2023]
Abstract
OBJECTIVE To construct retroviral vector carrying rapidly selective marker. METHODS The recombination retroviral vector GCGFPPXSN was constructed by cloning the green fluorescent protein (GFP) cDNA into the retroviral vector containing putative internal ribosome entry sites GCXPXSN and transferred in ecotropic packaging cell line PE501 by electroporation method. The supernatants of the PE501GCGFPPXSN were used to infect the amphotropic packaging cell line PA317. The G418 resistant clones were selected in 4 weeks and were detectable by fluorescence microscopy or by fluorescence-activated cell sorting(FACS). RESULTS A recombination retroviral vector GCGFPPXSN carrying rapidly selective marker GFP was constructed. GFP expression in packaging cell line PA317-GCGFPPXSN transferred by GCGFPPXSN was detected by fluorescence microscopy of FACS. PA317-GCGFPPXSN grew to a titer of 1.2 x 10(5) cpu/ml. By cocultivating retroviral vector producing cells and T lymphocytes, expression of GFP was observed in T lymphocytes 2 days after the end of the cocultivation. T lymphocytes expressing GFP were separated. CONCLUSION The mammalian cell can be efficient gene transfected by retroviral vector carrying GFP. The use of GFP for cell marking represents an important advantage over conventional strategies which typically involve the use of neomycin resistance. GFP, in fact, allows a rapid in vitro selection of transduced cell by FACS. The selection requires only two-day culture with this retroviral vector, compared with 10-14 day culture with a classical retroviral vector.
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Affiliation(s)
- H Wang
- Tumor Immunology and Gene Therapy Center, The Eastern Institute of Hepatobiliary Surgery, The Second Military Medical University, Shanghai, 200438 P. R. China.
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Da W, Zhong J, Liu Y. [Hepatic veno-occlusive disease after hemopoetic stem cell transplantation]. Zhonghua Nei Ke Za Zhi 1995; 34:374-7. [PMID: 8582182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The clinical features of 6 cases with severe veno-occlusive disease (SVOD) in 43 patients who received hemopoetic stem cell transplantation (HSCT) in our institute from May 1983 to March 1994 were reported. The incidence of SVOD was 14% of the 43 patients, and 7.9% of those received autologous bone marrow transplantation (ABMT), SVOD occurred within 3 weeks after HSCT in all the 6 cases and was manifested by painful hepatomegaly, jaundice, hyperbilirubinemia, increase of serum liver enzyme level and ascites. Although supportive and symptomatic treatment including steroids were given, all patients died of progressive multiorgan failure within 4 weeks after HSCT. It is suggested that SVOD of the liver is a major and often lethal complication of HSCT and prophylaxis of this disorder with anticoagulant and antiplatelet agents is essential in clinical HSCT.
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Affiliation(s)
- W Da
- Lanzhou General Hospital, PLA, Lanzhou Institute of Hematology
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Da W. [Improving the long survival of acute leukemia treated by autografting]. Zhonghua Nei Ke Za Zhi 1995; 34:7-8. [PMID: 7600880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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