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Shaikh S, Forsyth J, Haslam J, Hicks G, Krishnan A, Ren K, Mitwalli A, Li D, Abbas K, Majeed T, Masudi T, Peter M, Bandyopadhyay D. Weekend and Out of Hours Surgical Handover (WOOSH): A Checklist Format Improves Efficiency and Patient Safety. Int J Surg 2017. [DOI: 10.1016/j.ijsu.2017.08.209] [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: 10/18/2022]
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Li HG, Zhao LH, Zhang ZH, Liu JZ, Ren K, Li SY, Su ZJ. The Impact of Cysteine-Rich Intestinal Protein 1 (CRIP1) on Thyroid Carcinoma. Cell Physiol Biochem 2017; 43:2037-2046. [PMID: 29059670 DOI: 10.1159/000484184] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 08/18/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS CRIP1 (cysteine-rich intestinal protein 1) has been found in several tumor types; however, its prognostic impact and role in cellular processes, particularly in thyroid carcinoma, are still unclear. METHODS To elucidate the prognostic impact of CRIP1, we analyzed tissues from 58 primary invasive thyroid carcinomas using immunohistochemistry. Western blotting was performed to investigate CRIP1 protein expression in the thyrocyte cell line Nthy-ori 3-1 and four different thyroid carcinoma cell lines, K1, TPC-1, TT, and SW579. Endogenous expression of CRIP1 was suppressed using a siRNA (si-CRIP1). The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was used to investigate cell viability. Flow cytometric analysis was used to detect cell cycle progression and cell apoptosis. The effects of silencing CRIP1 on cell migration and invasion were detected using the transwell assay. RESULTS The immunohistochemistry results showed that CRIP1 was overexpressed in thyroid carcinoma. CRIP1 expression was associated with tumor size, TNM stage, and lymphatic metastasis, but not with age, gender, and tumor location. In addition, the expression of CRIP1 in K1, TPC-1, TT, and SW529 cells was higher than that in the Nthy-ori 3-1 cells. The highest expression was observed in the SW579 and TT cells. Furthermore, silencing CRIP1 inhibited the proliferation, migration, and invasion of thyroid carcinoma cell lines SW579 and TT. We also found that silencing CRIP1 induced G1 arrest and apoptosis of thyroid carcinoma cell lines SW579 and TT. CONCLUSION In conclusion, CRIP1 acts as an oncogene in the cell proliferation, migration, and invasion processes of thyroid carcinoma. CRIP1 may serve well as an independent prognostic marker with significant predictive power for use in thyroid carcinoma therapy.
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Affiliation(s)
- Hong-Guang Li
- Department of Thyroid Surgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Li-Hong Zhao
- Central Sterile Supply Department, Henan Provincial People's Hospital, Zhengzhou, China
| | - Zhen-Hua Zhang
- Department of Thyroid Surgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Jun-Zhao Liu
- Department of Thyroid Surgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Ke Ren
- Department of General Surgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Shao-Ying Li
- Department of General Surgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Zi-Jie Su
- Department of Thyroid Surgery, Henan Provincial People's Hospital, Zhengzhou, China
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Chen X, Ren K, Liang P, Li J, Chen K, Gao J. Association between spectral computed tomography images and clinicopathological features in advanced gastric adenocarcinoma. Oncol Lett 2017; 14:6664-6670. [PMID: 29163693 PMCID: PMC5686525 DOI: 10.3892/ol.2017.7064] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 07/07/2017] [Indexed: 02/06/2023] Open
Abstract
To investigate the role of spectral computed tomography (CT)-generated iodine concentration (IC) in the evaluation of clinicopathological features of advanced gastric adenocarcinoma (AGC), 42 patients who underwent abdominal enhanced CT with spectral imaging mode were selected for the present study. The IC of the primary lesion in the arterial phase (ICAP) and portal venous phase (ICVP) was measured and the IC of the aorta was used for a normalized iodine concentration (nIC). Micro-vessel density (MVD) and lymphatic vessel density (LVD) were detected using immunohistochemical assays against cluster of differentiation 34 and D2-40, respectively. Other clinicopathological characteristics were also documented. The IC parameters were revealed to be significantly increased in the high-MVD group, particularly for the nICVP (P=0.002). Additionally, the nICAP revealed a significant difference (P=0.041) between the high- and low-LVD group. The nICAP and nICVP were increased in the poorly differentiated group compared with the moderately differentiated group (P=0.040 and P=0.011, respectively). The ICs and MVD demonstrated a statistically significant positive linear correlation. nICVP was able to be used to discriminate between the moderately and poorly differentiated carcinomas, with an area under the receiver operating characteristic curve of 0.759. However, IC demonstrated no correlation with serosal involvement, lymph node metastasis, LVD, and nodular or metastatic tumors. The results of the present study suggest that the nICVP value may serve as a non-invasive marker for the angiogenesis of, and the differentiations between, patients with AGC.
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Affiliation(s)
- Xiaohua Chen
- Department of Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Ke Ren
- Department of Gastroenterological Surgery, Luohe Central Hospital, Luohe, Henan 462000, P.R. China
| | - Pan Liang
- Department of Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Jiayin Li
- Department of Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Kuisheng Chen
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Jianbo Gao
- Department of Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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Ren K, Wang Y, Sun T, Yue W, Zhang H. Electrospun PCL/gelatin composite nanofiber structures for effective guided bone regeneration membranes. Materials Science and Engineering: C 2017; 78:324-332. [DOI: 10.1016/j.msec.2017.04.084] [Citation(s) in RCA: 221] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 04/13/2017] [Accepted: 04/15/2017] [Indexed: 11/15/2022]
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155
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Guo W, Imai S, Yang JL, Zou S, Watanabe M, Chu YX, Mohammad Z, Xu H, Moudgil KD, Wei F, Dubner R, Ren K. In vivo immune interactions of multipotent stromal cells underlie their long-lasting pain-relieving effect. Sci Rep 2017; 7:10107. [PMID: 28860501 PMCID: PMC5579160 DOI: 10.1038/s41598-017-10251-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 07/21/2017] [Indexed: 12/13/2022] Open
Abstract
Systemic infusion of bone marrow stromal cells (BMSCs), a major type of multipotent stromal cells, produces pain relief (antihyperalgesia) that lasts for months. However, studies have shown that the majority of BMSCs are trapped in the lungs immediately after intravenous infusion and their survival time in the host is inconsistent with their lengthy antihyperalgesia. Here we show that long-lasting antihyperalgesia produced by BMSCs required their chemotactic factors such as CCL4 and CCR2, the integrations with the monocytes/macrophages population, and BMSC-induced monocyte CXCL1. The activation of central mu-opioid receptors related to CXCL1-CXCR2 signaling plays an important role in BMSC-produced antihyperalgesia. Our findings suggest that the maintenance of antihypergesia can be achieved by immune regulation without actual engraftment of BMSCs. In the capacity of therapeutic use of BMSCs other than structural repair and replacement, more attention should be directed to their role as immune modulators and subsequent alterations in the immune system.
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Affiliation(s)
- Wei Guo
- Department of Neural and Pain Sciences, School of Dentistry, & Program in Neuroscience, University of Maryland, Baltimore, MD, 21201, USA
| | - Satoshi Imai
- Department of Neural and Pain Sciences, School of Dentistry, & Program in Neuroscience, University of Maryland, Baltimore, MD, 21201, USA.,Department of Clinical Pharmacology and Therapeutics, Kyoto University Hospital, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Jia-Le Yang
- Department of Neural and Pain Sciences, School of Dentistry, & Program in Neuroscience, University of Maryland, Baltimore, MD, 21201, USA
| | - Shiping Zou
- Department of Neural and Pain Sciences, School of Dentistry, & Program in Neuroscience, University of Maryland, Baltimore, MD, 21201, USA
| | - Mineo Watanabe
- Department of Neural and Pain Sciences, School of Dentistry, & Program in Neuroscience, University of Maryland, Baltimore, MD, 21201, USA.,Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University, Graduate School of Biomedical Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Yu-Xia Chu
- Department of Neural and Pain Sciences, School of Dentistry, & Program in Neuroscience, University of Maryland, Baltimore, MD, 21201, USA.,Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Zaid Mohammad
- Department of Neural and Pain Sciences, School of Dentistry, & Program in Neuroscience, University of Maryland, Baltimore, MD, 21201, USA
| | - Huakun Xu
- Division of Biomaterials and Tissue Engineering, School of Dentistry, University of Maryland, Baltimore, MD, 21201, USA
| | - Kamal D Moudgil
- Department of Microbiology & Immunology, University of Maryland, Baltimore, MD, 21201, USA
| | - Feng Wei
- Department of Neural and Pain Sciences, School of Dentistry, & Program in Neuroscience, University of Maryland, Baltimore, MD, 21201, USA
| | - Ronald Dubner
- Department of Neural and Pain Sciences, School of Dentistry, & Program in Neuroscience, University of Maryland, Baltimore, MD, 21201, USA
| | - Ke Ren
- Department of Neural and Pain Sciences, School of Dentistry, & Program in Neuroscience, University of Maryland, Baltimore, MD, 21201, USA.
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Ren K, Liu QQ, An ZF, Zhang DP, Chen XH. MiR-144 functions as tumor suppressor by targeting PIM1 in gastric cancer. Eur Rev Med Pharmacol Sci 2017; 21:3028-3037. [PMID: 28742204] [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: 06/07/2023]
Abstract
OBJECTIVE Gastric cancer (GC) is one of the most prevalent types of malignant disease Worldwide. Mounting evidence has demonstrated the involvement of miRNAs in the development of GC. One of these miRNAs, miR-144 has been found aberrantly expressed in a variety of human malignancies. PATIENTS AND METHODS GC tissues were collected from patients, and the level of miR-144 was determined by qRT-PCR. GC cell lines SGC7901 and AGS were used as model cell lines and the anti-tumor effect of miR-144 in both cells were examined. The level of miR-144 was restored in GC cells using miR-144 mimic. Moreover, the target gene of miR-144 wad identified. RESULTS In this study, our results showed that low miR-144 level significantly correlated with lymph node metastasis stage, TNM stage and differentiation degree. In addition, we found that miR-144 acted as a tumor suppressor in GC. Moreover, our findings showed that miR-144 exerted an anti-tumor effect by directly targeting RLIP76. CONCLUSIONS miR-144 acts as a tumor suppressor in GC and it is a potential therapeutic target for GC treatment.
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Affiliation(s)
- K Ren
- General Surgery, Luohe Central Hospital, Luohe, Henan, China.
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Ee C, Thuraisingam S, Pirotta M, French S, Xue C, Teede H, Kristoffersen AE, Sirois F, Stub T, Engler J, Joos S, Güthlin C, Felenda J, Beckmann C, Stintzing F, Evans R, Bronfort G, Keefe D, Taberko A, Hanson L, Haley A, Ma H, Jolton J, Yarosh L, Keefe F, Nam J, Evans R, Ojala L, Kreitzer MJ, Hanson L, Fink C, Kraft K, Flower A, Lewith G, Harman K, Stuart B, Bishop FL, Frawley J, Füleki L, Kiss E, Vancsik T, Krenacs T, Funabashi M, Pohlman KA, Mior S, Thiel H, Hill MD, Cassidy DJ, Westaway M, Yager J, Hurwitz E, Kawchuk GN, O’Beirne M, Vohra S, Gaboury I, Morin C, Gaertner K, Torchetti L, Frei-Erb M, Kundi M, Frass M, Gallo E, Maggini V, Comite M, Sofi F, Baccetti S, Vannacci A, Di Stefano M, Monechi MV, Gori L, Rossi E, Firenzuoli F, Mediati RD, Ballerini G, Gardiner P, Lestoquoy AS, Negash L, Stillman S, Shah P, Liebschutz J, Adelstein P, Farrell-Riley C, Brackup I, Penti B, Saper R, Sampedro IG, Carvajal G, Gleiss A, Gross MM, Brendlin D, Röttger J, Stritter W, Seifert G, Grzanna N, Stange R, Guendling PW, Gu W, Lu Y, Wang J, Zhang C, Hajimonfarednejad M, Hannan N, Hellsing R, Wode K, Nordberg JH, Nordberg JH, Andermo S, Arman M, von Hörsten I, Torrielo PV, Bai H, Vilaró CLA, Cabrera FC, Huber R, Hui H, Ziea E, Tsui D, Hsieh J, Lam C, Chan E, Jensen MP, He Y, Battalio SL, Chan J, Edwards KA, Gertz KJ, Day MA, Sherlin LH, Ehde DM, Kim KH, Jang S, Jang BH, Zhang X, Go HY, Park S, Ko SG, Kraft K, Janik H, Börner A, Lee J, Lee B, Chang GT, Menassa A, Zhang Z, Motoo Y, Müller J, Rabini S, Vinson B, Kelber O, Storr M, Kraft K, Niemeijer M, Baars E, Hoekman J, Wang D, Ruijssenaaars W, Njoku FC, Klose P, Brinkhaus B, Michalsen A, Dobos G, Cramer H, Norheim AJ, Alræk T, Okumus F, Meng F, Oncu-Celik H, Hagel A, Albrecht H, Vollbracht C, Dauth W, Hagel W, Vitali F, Ganzleben I, Schultis H, Konturek P, Stein J, Neurath M, Raithel M, Hagel A, Vollbracht C, Raithel M, Konturek P, Krick B, Haller H, Klose P, Dobos G, Kümmel S, Cramer H, Haller H, Saha FJ, Kowoll A, Ebner B, Berger B, Dobos G, Choi KE, He L, Wang H, He X, Gu C, Zhang Y, Zhao L, Tong X, He L, Wang H, He X, Gu C, Zhang Y, Zhao L, Tong X, He L, Wang H, He X, Gu C, Zhang Y, Zhao L, Tong X, Ho RST, Chung VCH, Wu X, Wong CHL, Wu JCY, Wong SYS, Lau AYL, Sit RWS, Wong W, Holmes M, Bishop F, Calman L, Holmes M, Bishop F, Lewith G, Newell D, Field J, Htut WL, Han D, Choi DI, Choi SJ, Kim HY, Hwang JH, Huang CW, Jang BH, Chen FP, Ko SG, Huang W, Jin D, Lian F, Jang S, Kim KH, Lee EK, Sun SH, Go HY, Ko Y, Park S, Jang BH, Shin YC, Ko SG, Janik H, Greiffenhagen N, Bolte J, Kraft K, Jaworski M, Adamus M, Dobrzynska A, Jeitler M, Jaspers J, von Scheidt C, Koch B, Michalsen A, Steckhan N, Kessler C, Jin D, Huang WJ, Pang B, Lian FM, Jong M, Baars E, Glockmann A, Hamre H, Kainuma M, Murakami A, Kubota T, Kobayashi D, Sumoto Y, Furusyo N, Ando SI, Shimazoe T, Kelber O, Verjee S, Gorgus E, Schrenk D, Kemper K, Hill E, Kemper K, Rao N, Gascon G, Mahan J, Kienle G, Dietrich J, Schmoor C, Huber R, Kim WH, Han D, Ahmed M, He L, Hwang JH, Kiss E, Vancsik T, Meggyeshazi N, Kovago C, Krenacs T, Klaus AK, Zerm R, Pranga D, Ostermann T, Reif M, von Laue HB, Brinkhaus B, Kröz M, Klaus AK, Zerm R, Pranga D, Recchia DR, Ostermann T, Reif M, von Laue HB, Brinkhaus B, Kröz M, Klein-Laansma CT, Jong M, von Hagens C, Jansen JP, van Wietmarschen H, Jong MC, Ko Y, Sun SH, Go HY, Jeon CY, Song YK, Ko SG, Koch AK, Rabsilber S, Lauche R, Kümmel S, Dobos G, Langhorst J, Cramer H, Koch AK, Trifunovic-Koenig M, Klose P, Cramer H, Dobos G, Langhorst J, Koster E, Baars E, Delnoij D, Kroll L, Weiss K, Kubo A, Hendlish S, Altschuler A, Connolly N, Avins A, Lauche R, Recchia DR, Cramer H, Wardle J, Lee D, Sibbritt D, Adams J, Ostermann T, Lauche R, Sibbritt D, Park C, Mishra G, Adams J, Cramer H, Lechner J, Lee I, Chae Y, Lee J, Cho SH, Choi Y, Lee JY, Ryu HS, Yoon SS, Oh HK, Hyun LK, Kim JO, Yoon SW, Lee JY, Shin SH, Jang M, Müller I, Park SHJ, Lestoquoy AS, Laird L, Negash L, Mitchell S, Gardiner P, Li X, Wang Y, Zhen J, Yu H, Liu T, Gu X, Liu H, Ma W, Zhang C, Shang X, Bai Y, Meng F, Liu W, Rooney C, Smith A, Lopes S, Demarzo M, do Patrocínio Nunes M, Lorenz P, Gründemann C, Heinrich M, Garcia-Käufer M, Grunewald F, Messerschmidt S, Herrick A, Gruber K, Beckmann C, Knödler M, Huber R, Steinborn C, Stintzing F, Lu T, Wang L, Wu D, Luberto CM, Hall DL, Chad-Friedman E, Lechner S, Park ER, Luberto CM, Park E, Goodman J, Luer S, Heri M, von Ammon K, Frei-Erb M, Ma W, Meng F, Maggini V, Gallo E, Landini I, Lapucci A, Nobili S, Mini E, Firenzuoli F, McDermott C, Lewith G, Richards S, Cox D, Frossell S, Leydon G, Eyles C, Raphael H, Rogers R, Selby M, Adler C, Allam J, Meng F, Gu W, Zhang C, Bai H, Zhang Z, Wang D, Bu X, Zhang H, Zhang J, Liu H, Mikolasek M, Berg J, Witt C, Barth J, Miskulin I, Lalic Z, Miskulin M, Dumic A, Sebo D, Vcev A, Mohammed NAA, Han D, Ahmed M, Choi SJ, Im HB, Hwang JH, Mukherjee A, Kandhare A, Bodhankar S, Mukherjee A, Kandhare A, Thakurdesai P, Bodhankar S, Munk N, Evans E, Froman A, Kline M, Bair MJ, Musial F, Kristoffersen AE, Alræk T, Hamre HJ, Stub T, Björkman L, Fønnebø VM, Pang B, Lian FM, Ni Q, Tong XL, Li XL, Liu WK, Feng S, Zhao XY, Zheng YJ, Zhao XM, Lin YQ, Pang B, Lian FM, Tong XL, Zhao TY, Zhao XY, Phd HC, Zhang C, Pang B, Liu F, Tong XL, Zhao LH, Zhao XM, Ye R, Gu CJ, Pang B, Ni Q, Tong XL, Lian FM, Zhao XY, Jin D, Zhao XM, Zheng YJ, Lin YQ, Peng W, Lauche R, Sibbritt D, Adams J, Peng W, Wardle J, Cramer H, Mishra G, Lauche R, Pohlman KA, Mior S, Funabashi M, De Carvalho D, El-Bayoumi M, Haig B, Kelly K, Wade DJ, O’Beirne M, Vohra S, Portalupi E, Gobo G, Bellavita L, Guglielmetti C, Raak C, Teuber M, Molsberger F, von Rath U, Reichelt U, Schwanebeck U, Zeil S, Vogelberg C, Veintimilla DR, Vollbracht C, Mery GT, Villavicencio MM, Moran SH, Sachse C, Gündlin PW, Stange R, Sahebkarkhorasani M, Azizi H, Schumann D, Lauche R, Sundberg T, Leach MJ, Cramer H, Seca S, Greten H, Selliah S, Shakya A, Han D, Kim HY, Choi DI, Im HB, Choi SJ, Sherbakova A, Ulrich-Merzenich G, Kelber O, Abdel-Aziz H, Sibinga E, Webb L, Ellen J, Skrautvol K, Nåden D, Song R, Grabowska W, Osypiuk K, Diaz GV, Bonato P, Park M, Hausdorff J, Fox M, Sudarsky LR, Tarsy D, Novakowski J, Macklin EA, Wayne PM, Song R, Hwang I, Ahn S, Lee MA, Wayne PM, Sohn MK, Sorokin O, Steckhan N, Heydeck D, Borchert A, Hohmann CD, Kühn H, Michalsen A, Kessler C, Steckhan N, Hohmann CD, Cramer H, Michalsen A, Dobos G, von Scheidt C, Kirschbaum C, Stalder T, Stöckigt B, Teut M, Suhr R, Sulmann D, Brinkhaus B, Streeter C, Gerbarg P, Silveri M, Brown R, Jensen J, Stritter W, Rutert B, Eggert A, Längler A, Seifert G, Holmberg C, Sun J, Deng X, Li WY, Wen B, Robinson N, Liu JP, Sung HK, Yang N, Go HY, Shin SM, Jung H, Kim YJ, Jung WS, Park TY, Suzuki K, Ito T, Uchida S, Kamohara S, Ono N, Takamura M, Yokochi A, Maruyama K, Tapia P, Thabaut K, Brinkhaus B, Stöckigt B, Thronicke A, Kröz M, Steele M, Matthes H, Herbstreit C, Schad F, Tian J, Lian F, Yang L, Tong X, Tian T, Zhang H, Tian X, Wang C, Chai QY, Zhang L, Xia R, Huang N, Fei Y, Liu J, Trent N, Miraglia M, Dusek J, Pasalis E, Khalsa SB, Trifunovic-König M, Klose P, Cramer H, Lauche R, Koch A, Dobos G, Langhorst J, Uebelacker L, Tremont G, Gillette L, Epstein-Lubow G, Strong D, Abrantes A, Tyrka A, Tran T, Gaudiano B, Miller I, Ullmann G, Ullmann G, Li Y, Vaidya S, Marathe V, Vale AC, Motta J, Donadão F, Valente AC, Valente LCC, Ghelman R, Vesovic D, Jevdic D, Jevdic A, Jevdic K, Djacic M, Letic D, Bozic D, Markovic M, Dunjic S, Vesovic D, Jevdic D, Jevdic A, Jevdic K, Djacic M, Letic D, Bozic D, Markovic M, Ruscuklic G, Baksa D, Dunjic S, Vesovic D, Jevdic D, Jevdic A, Jevdic K, Djacic M, Letic D, Bozic D, Markovic M, Ruscuklic G, Baksa D, Dunjic S, Vesovic D, Jevdic D, Jevdic A, Jevdic K, Djacic M, Letic D, Bozic D, Markovic M, Ruscuklic G, Baksa D, Dunjic S, Vesovic D, Jevdic D, Jevdic A, Jevdic K, Djacic M, Letic D, Bozic D, Markovic M, Vrca K, Dunjic S, Vincent A, Wahner-Roedler D, Whipple M, Vogelius MM, Vollbracht C, Friesecke I, Gündling PW, Wahner-Roedler D, Mahapatra S, Hynes R, Van Rooy K, Looker S, Ghosh A, Bauer B, Cutshall S, Walach H, Flores AB, Walach H, Ofner M, Kastner A, Schwarzl G, Schwameder H, Alexander N, Strutzenberger G, Wang J, Lu Y, Gu W, Zhang C, Bu X, Zhang H, Zhang J, He Y, Zhang X, Meng F, Wang S, Yu H, Shi J, Hao Y, Liu T, Wu J, Qiu Z, Gu X, Wang YH, Lou CJ, Watts S, Wayne P, Osypiuk K, Vergara-Diaz G, Bonato P, Gow B, Hausdorff J, Miranda J, Sudarsky L, Tarsy D, Fox M, Macklin E, Wode K, Bergqvist J, Bernhardsson BM, Nordberg JH, Kienle G, Sharp L, Henriksson R, Woo Y, Hyun MK, Wu H, Wang TF, Zhao Y, Wei Y, Tian L, He L, Wang X, Wu R, Feng S, Han M, Caldwell PHY, Liu S, Zhang J, Liu J, Xia R, Chai Q, Fei Y, Guo Z, Wang C, Liu Z, Li X, Zhang Y, Liu J, Yang IJ, Lincha VR, Ahn SH, Lee DU, Shin HM, Yang L, Sibbritt D, Peng W, Adams J, Yang N, Sung H, Shin SM, Go HY, Jung H, Kim Y, Park TY, Yap A, Kwan YH, Tan CS, Ibrahim S, Ang SB, Yayi A, Han D, Im HB, Hwang JH, Choi SJ, Yoo JE, Yoo HR, Jang SB, Lee HL, Youssef A, Ezzat S, Motaal AA, El-Askary H, Yu X, Cui Y, Zhang Y, Lian F, Yun Y, Ko Y, Ahn JH, Jang BH, Kim KS, Ko SG, Choi I, Zerm R, Glinz A, Pranga D, Berger B, ten Brink F, Reif M, Büssing A, Gutenbrunner C, Kröz M, Zerm R, Helbrecht B, Pranga D, Brinkhaus B, Michalsen A, Kröz M, Zhang H, Fang T, Wang J, Zhang C, He Y, Zhang X, Zhang Z, Wang D, Meng F, Zhang J, Zhang C, Bai H, Shen Z, Ma W, Liu H, Bai Y, Shang X, Meng F, Zhang R, Wu F, Li M, Xuan X, Shen X, Ren K, Berman B, Zhen J, Li X, Gu X, Yu H, Zheng Z, Wan Y, Wang Y, Ma X, Dong F, Liu T, Zhen J, Li X, Gu X, Yu H, Zheng Z, Wan Y, Wang Y, Ma X, Dong F, Liu T, Zick S, Harris R, Bae GE, Kwon JN, Lee HY, Nam JK, Lee SD, Lee DH, Han JY, Yun YJ, Lee JH, Park HL, Park SH, Bocci C, Ivaldi GB, Vietti I, Meaglia I, Guffi M, Ruggiero R, Gualea M, Longa E, Bonucci M, Croke S, Rodriguez LD, Caracuel-Martínez JC, Fajardo-Rodríguez MF, Ariza-García A, la Fuente FGD, Arroyo-Morales M, Estrems MS, Gómez VG, Estrems MS, Sabater MV, Ferreri R, Bernardini S, Pulcri R, Cracolici F, Rinaldi M, Porciani C, Firenzuoli F, Baccetti S, Di Stefano M, Monechi MV, Gallo E, Maggini V, Gori L, Rossi E, Fisher P, Hughes J, Mendoza A, MacPherson H, Witt C, Filshie J, Lewith G, Di Francesco A, Bernardini A, Messe M, Primitivo V, Iasella PA, Ghelman R, Taminato M, Alcantara JDC, De Oliveira KR, Rodrigues DCDA, Mumme JRC, Sunakozawa OKM, Filho VO, Seifert G, Goldenberg J, Day A, Sasagawa M, Ward L, Cooley K, Gunnarsdottir T, Hjaltadottir I. World Congress Integrative Medicine & Health 2017: part two. BMC Complement Altern Med 2017. [PMCID: PMC5498867 DOI: 10.1186/s12906-017-1783-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ren K, Dai Y, Yi K, Kinoshita M, Itoh M, Sakata I, Sakai T, Yi SQ. Using a Whole-mount Immunohistochemical Method to Study the Innervation of the Biliary Tract in Suncus murinus. J Vis Exp 2017. [PMID: 28654062 DOI: 10.3791/55483] [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] [Indexed: 10/31/2022] Open
Abstract
This work describes the whole-mount immunohistochemistry staining method in detail, using neurofilament protein antibody to label the innervation of the biliary tract in Suncus murinus (S. murinus ). First, the specimen was dissected from S. murinus and fixed in 4% paraformaldehyde (PFA). Second, an enzymatic treatment and potential endogenous peroxidase inactivation were performed. The specimen was then exposed to the primary antibody, anti-neurofilament protein antibody, for 3-6 days. It was then incubated with the secondary antibody conjugated with horseradish peroxidase. The color reaction was revealed by reacting the specimen with a 3,3'-diaminobenzidine (DAB) substrate. This method can be applied to analyze the innervation of all visceral organs. Furthermore, this protocol can also be adapted to test other neuronal antibodies, but optimization of the antibodies should be done first. This method was originally introduced by Kuratani and Tanaka1,2,3.
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Affiliation(s)
- Ke Ren
- Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University
| | - Yidan Dai
- Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University
| | - Kai Yi
- Department of Anatomy, Tokyo Medical University
| | - Masanobu Kinoshita
- Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University
| | | | - Ichiro Sakata
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University
| | - Takafumi Sakai
- Area of Regulatory Biology, Division of Life Science, Graduate School of Science and Engineering, Saitama University
| | - Shuang-Qin Yi
- Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University;
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159
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Yao N, Ren K, Wang Y, Jin Q, Lu X, Lu Y, Jiang C, Zhang D, Lu J, Wang C, Huo J, Chen Y, Zhang J. Paris polyphylla Suppresses Proliferation and Vasculogenic Mimicry of Human Osteosarcoma Cells and Inhibits Tumor Growth In Vivo. Am J Chin Med 2017; 45:575-598. [PMID: 28385078 DOI: 10.1142/s0192415x17500343] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Paris polyphylla, a traditional antipyretic-detoxicate chinese medicinal herb, has been applied extensively in cancer treatments for nearly 2000 years. The purpose of the present study is to evaluate the potential anti-osteosarcoma effects of Paris polyphylla ethanol extract (PPEE) and to investigate its underlying mechanisms. The antiproliferation activity of PPEE was tested on 143B, MG-63, U-2 OS and hFOB1.19 cells using MTT assay. The pro-apoptotic and cell cycle arrest effects of PPEE were confirmed by Hoechst 33342 staining and flow cytometry. The antimigratory, anti-invasive and antivasculogenic mimicry (VM) effects of PPEE were investigated by wound healing, Transwell and 3D culture assays. Mouse xenograft model was used to examine its anti-osteosarcoma efficacy in vivo. Hematologic profiles and hepatorenal functions were evaluated to assess the toxicity of PPEE. PPEE evidently suppressed cell proliferation of 143B, MG-63 and U-2 OS with IC50 values of 10-60[Formula: see text][Formula: see text]g/mL, but showed little cytotoxicity against normal osteoblastic cell. PPEE promoted apoptosis in 143B cell via caspase activation, increased Bax/Bcl-2 ratio and PARP cleavage. It also induced G2/M phase arrest associated with elevated phosphorylation of CDK1, Cdc25C, Chk2 and down-regulation of cyclin B1, CDK1, Cdc25C expression. Additionally, PPEE inhibited 143B cell migration, invasion and VM formation at noncytotoxic concentrations through decreasing the expression of FAK, Mig-7, MMP2 and MMP9. Finally, daily oral administration of PPEE for four weeks exhibits potent antitumor and anti-VM activity in 143B xenograft model with low toxicity. Taken together, these findings demonstrated PPEE possesses anti-osteosarcoma and anti-VM activity in vitro and in vivo, and therefore is a potential candidate for osteosarcoma treatment.
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Affiliation(s)
- Nan Yao
- * Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R. China.,† Laboratory of Translational Medicine, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R. China
| | - Ke Ren
- ‡ Department of Orthopaedics, Zhongda Hospital, Southeast University, Nanjing 210009, Jiangsu Province, P.R. China
| | - Yimin Wang
- § Department of Orthopedics, The Third Affiliated Hospital of Soochow University, (The First People's Hospital of Changzhou), Changzhou City 213003, Jiangsu Province P.R. China
| | - Qiaomei Jin
- * Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R. China.,† Laboratory of Translational Medicine, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R. China
| | - Xiao Lu
- ¶ Nanjing Biopharmaceutical Innovation Platform Company Limited, Nanjing 210032, Jiangsu Province, P.R. China
| | - Yan Lu
- * Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R. China.,† Laboratory of Translational Medicine, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R. China
| | - Cuihua Jiang
- * Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R. China.,† Laboratory of Translational Medicine, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R. China
| | - Dongjian Zhang
- * Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R. China.,† Laboratory of Translational Medicine, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R. China
| | - Jun Lu
- ‡ Department of Orthopaedics, Zhongda Hospital, Southeast University, Nanjing 210009, Jiangsu Province, P.R. China
| | - Chen Wang
- ‡ Department of Orthopaedics, Zhongda Hospital, Southeast University, Nanjing 210009, Jiangsu Province, P.R. China
| | - Jiege Huo
- * Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R. China.,† Laboratory of Translational Medicine, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R. China
| | - Yong Chen
- ∥ Jinling Hospital, Department of Orthopedics, Nanjing University, School of Medicine, Nanjing 210002, Jiangsu Province, P.R. China
| | - Jian Zhang
- * Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R. China.,† Laboratory of Translational Medicine, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R. China
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160
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Chen XH, Ren K, Liang P, Chai YR, Chen KS, Gao JB. Spectral computed tomography in advanced gastric cancer: Can iodine concentration non-invasively assess angiogenesis? World J Gastroenterol 2017; 23:1666-1675. [PMID: 28321168 PMCID: PMC5340819 DOI: 10.3748/wjg.v23.i9.1666] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 01/19/2017] [Accepted: 02/08/2017] [Indexed: 02/07/2023] Open
Abstract
AIM To investigate the correlation of iodine concentration (IC) generated by spectral computed tomography (CT) with micro-vessel density (MVD) and vascular endothelial growth factor (VEGF) expression in patients with advanced gastric carcinoma (GC).
METHODS Thirty-four advanced GC patients underwent abdominal enhanced CT in the gemstone spectral imaging mode. The IC of the primary lesion in the arterial phase (AP) and venous phase (VP) were measured, and were then normalized against that in the aorta to provide the normalized IC (nIC). MVD and VEGF were detected by immunohistochemical assays, using CD34 and VEGF-A antibodies, respectively. Correlations of nIC with MVD, VEGF, and clinical-pathological features were analyzed.
RESULTS Both nICs correlated linearly with MVD and were higher in the primary lesion site than in the normal control site, but were not correlated with VEGF expression. After stratification by clinical-pathological subtypes, nIC-AP showed a statistically significant correlation with MVD, particularly in the group with tumors at stage T4, without nodular involvement, of a mixed Lauren type, where the tumor was located at the antrum site, and occurred in female individuals. nIC-VP showed a positive correlation with MVD in the group with the tumor at stage T4 and above, had nodular involvement, was poorly differentiated, was located at the pylorus site, of a mixed and diffused Lauren subtype, and occurred in male individuals. nIC-AP and nIC-VP showed significant differences in terms of histological differentiation and Lauren subtype.
CONCLUSION The IC detected by spectral CT correlated with the MVD. nIC-AP and nIC-VP can reflect angiogenesis in different pathological subgroups of advanced GC.
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161
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Zhang R, WU F, Li M, Yuan X, Ren K, Berman B. Optogenetic inhibition of cortex neurons attenuates pain-related affective responses and social behavioral disorder in inflammatory pain rat model. Brain Stimul 2017. [DOI: 10.1016/j.brs.2017.01.477] [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] Open
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162
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Song Y, Zhang C, Wang P, Wang L, Bao C, Weir MD, Reynolds MA, Ren K, Zhao L, Xu HHK. Engineering bone regeneration with novel cell-laden hydrogel microfiber-injectable calcium phosphate scaffold. Mater Sci Eng C Mater Biol Appl 2017; 75:895-905. [PMID: 28415545 DOI: 10.1016/j.msec.2017.02.158] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 02/26/2017] [Accepted: 02/27/2017] [Indexed: 02/05/2023]
Abstract
Cell-based tissue engineering is promising to create living functional tissues for bone regeneration. The implanted cells should be evenly distributed in the scaffold, be fast-released to the defect and maintain high viability in order to actively participate in the regenerative process. Herein, we report an injectable calcium phosphate cement (CPC) scaffold containing cell-encapsulating hydrogel microfibers with desirable degradability that could deliver cells in a timely manner and maintain cell viability. Microfibers were synthesized using partially-oxidized alginate with various concentrations (0-0.8%) of fibrinogen to optimize the degradation rate of the alginate-fibrin microfibers (Alg-Fb MF). A fibrin concentration of 0.4% in Alg-Fb MF resulted in the greatest enhancement of cell migration, release and proliferation. Interestingly, a significant amount of cell-cell contact along the long-axis of the microfibers was established in Alg-0.4%Fb MF as early as day 2. The injectable tissue engineered construct for bone reconstruct was fabricated by mixing the fast-degradable Alg-0.4%Fb MF with CPC paste at 1:1 volume ratio. In vitro study showed that cells re-collected from the construct maintained good viability and osteogenic potentials. In vivo study demonstrated that the hBMSC-encapsulated CPC-MF tissue engineered construct displayed a robust capacity for bone regeneration. At 12weeks after implantation, osseous bridge in the rat mandibular defect was observed in CPC-MF-hBMSCs group with a new bone area fraction of (42.1±7.8) % in the defects, which was >3-fold that of the control group. The novel tissue-engineered construct presents an excellent prospect for a wide range of dental, craniofacial and orthopedic applications.
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Affiliation(s)
- Yang Song
- Department of Prosthodontics, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Chi Zhang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Ping Wang
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA.
| | - Lin Wang
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; VIP Integrated Department, School and Hospital of Stomatology, Jilin University, Changchun, Jilin 130011, China
| | - Chunyun Bao
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Michael D Weir
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Mark A Reynolds
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Ke Ren
- Department of Neural and Pain Sciences, School of Dentistry, Program in Neuroscience, University of Maryland, Baltimore, MD 21201, USA
| | - Liang Zhao
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Department of Orthopaedic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China.
| | - Hockin H K Xu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Center for Stem Cell Biology and Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA; University of Maryland Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
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163
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Wang Y, Ren K, Liu Y, Sun WG, Wang JH, Zhang X, Wu CH. Application of BOLD MRI and DTI for the evaluation of renal effect related to viscosity of iodinated contrast agent in a rat model. J Magn Reson Imaging 2017; 46:1320-1331. [PMID: 28248433 DOI: 10.1002/jmri.25683] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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: 11/20/2016] [Accepted: 02/06/2017] [Indexed: 12/26/2022] Open
Abstract
PURPOSE To evaluate the effects of viscosity of contrast agent (CA) on intrarenal oxygenation and diffusion as measured by blood oxygenation level-dependent (BOLD) magnetic resonance imaging (MRI) and diffusion tensor imaging (DTI) in a rat model. MATERIALS AND METHODS Radiocontrast iodixanol formulated in three viscosities were designated 270, 320, and 350 (mg iodine/mL). Sixty-three male Wistar rats were divided into four groups. Saline and iodixanol (4 g iodine/kg) were administered. MR images were acquired on a 3.0T scanner at baseline and at 1 hour, 24 hours, 48 hours, and 72 hours postinjection of solutions. BOLD-MRI was performed with a multiple gradient-recalled-echo sequence. The changes in R2*, apparent diffusion coefficient (ADC), fractional anisotropy (FA), histology, and hypoxia-inducible factor-1α (HIF-1α) immunoexpression were evaluated. The R2*, ADC, and FA values were normalized to baseline to calculate ΔR2*, ΔADC, and ΔFA. RESULTS Compared with baseline levels, distinct elevation of ΔR2* (P < 0.05) and obvious decrease in ΔADC (P < 0.01) and ΔFA (P < 0.05) were observed in all the anatomical compartments at 1 hour after administration of CA. The absolute values in ΔR2*, ΔADC, and ΔFA increased with increases in CA viscosity, and differed significantly between the CA groups in renal cortex (CO), outer stripe of outer medulla (OSOM), and inner stripe of outer medulla (ISOM) (all P < 0.05). A significant positive correlation was observed between ΔR2* and HIF-1α expression (P < 0.001, r = 0.75). Significant negative correlations were observed between ΔADC, ΔFA, and pathologies in CO, OSOM, ISOM (all P < 0.001, r = -0.68-0.87; all P < 0.001, r = -0.60-0.66). CONCLUSION The effect of CA viscosity on intrarenal oxygenation and diffusion was viscosity-dependent, and was identified using BOLD-MRI and DTI. LEVEL OF EVIDENCE 1 Technical Efficacy: Stage 3 J. Magn. Reson. Imaging 2017;46:1320-1331.
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Affiliation(s)
- Yi Wang
- Department of Radiology, First Hospital of China Medical University, Shenyang, P.R. China.,Key Laboratory of Imaging Diagnosis and Interventional Radiology of Liaoning Province, Shenyang, P.R. China
| | - Ke Ren
- Department of Radiology, First Hospital of China Medical University, Shenyang, P.R. China
| | - Yi Liu
- Department of Radiology, First Hospital of China Medical University, Shenyang, P.R. China
| | - Wen-Ge Sun
- Department of Radiology, First Hospital of China Medical University, Shenyang, P.R. China
| | - Jia-Huan Wang
- Department of Radiology, First Hospital of China Medical University, Shenyang, P.R. China
| | - Xin Zhang
- Department of Radiology, First Hospital of China Medical University, Shenyang, P.R. China.,Key Laboratory of Imaging Diagnosis and Interventional Radiology of Liaoning Province, Shenyang, P.R. China
| | - Cheng-Hua Wu
- Department of Radiology, First Hospital of China Medical University, Shenyang, P.R. China.,Key Laboratory of Imaging Diagnosis and Interventional Radiology of Liaoning Province, Shenyang, P.R. China
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164
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Shi H, Ren K, Lv B, Zhang W, Zhao Y, Tan RX, Li E. Baicalin from Scutellaria baicalensis blocks respiratory syncytial virus (RSV) infection and reduces inflammatory cell infiltration and lung injury in mice. Sci Rep 2016; 6:35851. [PMID: 27767097 PMCID: PMC5073294 DOI: 10.1038/srep35851] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 10/06/2016] [Indexed: 12/26/2022] Open
Abstract
The roots of Scutellaria baicalensis has been used as a remedy for inflammatory and infective diseases for thousands of years. We evaluated the antiviral activity against respiratory syncytial virus (RSV) infection, the leading cause of childhood infection and hospitalization. By fractionation and chromatographic analysis, we determined that baicalin was responsible for the antiviral activity of S. baicalensis against RSV infection. The concentration for 50% inhibition (IC50) of RSV infection was determined at 19.9 ± 1.8 μM, while the 50% cytotoxic concentration (CC50) was measured at 370 ± 10 μM. We then used a mouse model of RSV infection to further demonstrate baicalin antiviral effect. RSV infection caused significant lung injury and proinflammatory response, including CD4 and CD8 T lymphocyte infiltration. Baicalin treatment resulted in reduction of T lymphocyte infiltration and gene expression of proinflammatory factors, while the treatment moderately reduced RSV titers recovered from the lung tissues. T lymphocyte infiltration and cytotoxic T lymphocyte modulated tissue damage has been identified critical factors of RSV disease. The study therefore demonstrates that baicalin subjugates RSV disease through antiviral and anti-inflammatory effect.
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Affiliation(s)
- Hengfei Shi
- Medical School and State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.,Jiangsu Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Ke Ren
- Medical School and State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.,Jiangsu Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Baojie Lv
- Medical School and State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.,College of Life Sciences, Nanjing University, Nanjing, China
| | - Wei Zhang
- Nanjing University of Chinese Medicine, Nanjing, China
| | - Ying Zhao
- Medical School and State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China
| | - Ren Xiang Tan
- Medical School and State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.,College of Life Sciences, Nanjing University, Nanjing, China.,Nanjing University of Chinese Medicine, Nanjing, China
| | - Erguang Li
- Medical School and State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.,Jiangsu Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
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165
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Ren K, Zhang W, Chen X, Ma Y, Dai Y, Fan Y, Hou Y, Tan RX, Li E. An Epigenetic Compound Library Screen Identifies BET Inhibitors That Promote HSV-1 and -2 Replication by Bridging P-TEFb to Viral Gene Promoters through BRD4. PLoS Pathog 2016; 12:e1005950. [PMID: 27764245 PMCID: PMC5072739 DOI: 10.1371/journal.ppat.1005950] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 09/22/2016] [Indexed: 12/22/2022] Open
Abstract
The human HSV-1 and -2 are common pathogens of human diseases. Both host and viral factors are involved in HSV lytic infection, although detailed mechanisms remain elusive. By screening a chemical library of epigenetic regulation, we identified bromodomain-containing protein 4 (BRD4) as a critical player in HSV infection. We show that treatment with pan BD domain inhibitor enhanced both HSV infection. Using JQ1 as a probe, we found that JQ1, a defined BD1 inhibitor, acts through BRD4 protein since knockdown of BRD4 expression ablated JQ1 effect on HSV infection. BRD4 regulates HSV replication through complex formation involving CDK9 and RNAP II; whereas, JQ1 promotes HSV-1 infection by allocating the complex to HSV gene promoters. Therefore, suppression of BRD4 expression or inhibition of CDK9 activity impeded HSV infection. Our data support a model that JQ1 enhances HSV infection by switching BRD4 to transcription regulation of viral gene expression from chromatin targeting since transient expression of BRD4 BD1 or BD1/2 domain had similar effect to that by JQ1 treatment. In addition to the identification that BRD4 is a modulator for JQ1 action on HSV infection, this study demonstrates BRD4 has an essential role in HSV infection.
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Affiliation(s)
- Ke Ren
- Medical School and State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China
- Jiangsu Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Wei Zhang
- Medical School and State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China
- Jiangsu Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Xiaoqing Chen
- The Hoffmann Institute of Immunology, Guangzhou Medical University, Guangzhou, China
| | - Yingyu Ma
- Medical School and State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China
- Jiangsu Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Yue Dai
- Jiangsu Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Yimei Fan
- Medical School and State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China
| | - Yayi Hou
- Medical School and State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China
| | - Ren Xiang Tan
- Medical School and State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China
- Jiangsu Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
- Nanjing University of Chinese Medicine, Nanjing, China
- * E-mail: ;
| | - Erguang Li
- Medical School and State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China
- Jiangsu Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
- * E-mail: ;
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Cao Y, Shen Y, Kim S, Li-ming X, Gong L, Wang Z, Ren K, Yuan Z, Zhao L. The miR-196b Regulates the Response of Ionizing Radiation by Modulating HR23B Levels in Gastrointestinal Cancer Cells. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2099] [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]
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167
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Ren K, Lu X, Yao N, Chen Y, Yang A, Chen H, Zhang J, Wu S, Shi X, Wang C, Sun X. Focal adhesion kinase overexpression and its impact on human osteosarcoma. Oncotarget 2016; 6:31085-103. [PMID: 26393679 PMCID: PMC4741590 DOI: 10.18632/oncotarget.5044] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Accepted: 08/24/2015] [Indexed: 11/25/2022] Open
Abstract
Focal adhesion kinase (FAK) has been implicated in tumorigenesis in various malignancies. We sought to examine the expression patterns of FAK and the activated form, phosphorylated FAK (pFAK), in human osteosarcoma and to investigate the correlation of FAK expression with clinicopathologic parameters and prognosis. In addition, the functional consequence of manipulating the FAK protein level was investigated in human osteosarcoma cell lines. Immunohistochemical staining was used to detect FAK and pFAK in pathologic archived materials from 113 patients with primary osteosarcoma. Kaplan-Meier survival and Cox regression analyses were performed to evaluate the prognoses. The role of FAK in the cytological behavior of MG63 and 143B human osteosarcoma cell lines was studied via FAK protein knock down with siRNA. Cell proliferation, migration, invasiveness and apoptosis were assessed using the CCK8, Transwell and Annexin V/PI staining methods. Both FAK and pFAK were overexpressed in osteosarcoma. There were significant differences in overall survival between the FAK-/pFAK- and FAK+/pFAK- groups (P = 0.016), the FAK+/pFAK- and FAK+/pFAK+ groups (P = 0.012) and the FAK-/pFAK- and FAK+/pFAK+ groups (P < 0.001). There were similar differences in metastasis-free survival between groups. The Cox proportional hazards analysis showed that the FAK expression profile was an independent indicator of both overall and metastasis-free survival. SiRNA-based knockdown of FAK not only dramatically reduced the migration and invasion of MG63 and 143B cells, but also had a distinct effect on osteosarcoma cell proliferation and apoptosis. These results collectively suggest that FAK overexpression and phosphorylation might predict more aggressive biologic behavior in osteosarcoma and may be an independent predictor of poor prognosis.
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Affiliation(s)
- Ke Ren
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, P.R.China.,Department of Orthopaedics, Zhongda Hospital, Southeast University, Nanjing 210009, Jiangsu Province, P.R.China
| | - Xiao Lu
- Center Laboratory of Cancer Center, The Jingdu Hospital of Nanjing, Nanjing 210002, Jiangsu Province, P.R.China
| | - Nan Yao
- Laboratory of Translational Medicine, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R.China
| | - Yong Chen
- Jinling Hospital, Department of Orthopedics, Nanjing University, School of Medicine, Nanjing 210002, Jiangsu Province, P.R.China
| | - Aizhen Yang
- Center Laboratory of Cancer Center, The Jingdu Hospital of Nanjing, Nanjing 210002, Jiangsu Province, P.R.China
| | - Hui Chen
- Department of Orthopaedics, Zhongda Hospital, Southeast University, Nanjing 210009, Jiangsu Province, P.R.China
| | - Jian Zhang
- Laboratory of Translational Medicine, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing 210028, Jiangsu Province, P.R.China
| | - Sujia Wu
- Jinling Hospital, Department of Orthopedics, Nanjing University, School of Medicine, Nanjing 210002, Jiangsu Province, P.R.China
| | - Xin Shi
- Jinling Hospital, Department of Orthopedics, Nanjing University, School of Medicine, Nanjing 210002, Jiangsu Province, P.R.China
| | - Chen Wang
- Department of Orthopaedics, Zhongda Hospital, Southeast University, Nanjing 210009, Jiangsu Province, P.R.China
| | - Xiaoliang Sun
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou 213003, Jiangsu Province, P.R.China
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Guo W, Chu YX, Imai S, Yang JL, Zou S, Mohammad Z, Wei F, Dubner R, Ren K. Further observations on the behavioral and neural effects of bone marrow stromal cells in rodent pain models. Mol Pain 2016; 12:12/0/1744806916658043. [PMID: 27329776 PMCID: PMC4956005 DOI: 10.1177/1744806916658043] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Bone marrow stromal cells (BMSCs) have shown potential to treat chronic pain, although much still needs to be learned about their efficacy and mechanisms of action under different pain conditions. Here, we provide further convergent evidence on the effects of BMSCs in rodent pain models. RESULTS In an orofacial pain model involving injury of a tendon of the masseter muscle, BMSCs attenuated behavioral pain conditions assessed by von Frey filaments and a conditioned place avoidance test in female Sprague-Dawley rats. The antihyperalgesia of BMSCs in females lasted for <8 weeks, which is shorter than that seen in males. To relate preclinical findings to human clinical conditions, we used human BMSCs. Human BMSCs (1.5 M cells, i.v.) attenuated mechanical and thermal hyperalgesia induced by spinal nerve ligation and suppressed spinal nerve ligation-induced aversive behavior, and the effect persisted through the 8-week observation period. In a trigeminal slice preparation, BMSC-treated and nerve-injured C57B/L mice showed reduced amplitude and frequency of spontaneous excitatory postsynaptic currents, as well as excitatory synaptic currents evoked by electrical stimulation of the trigeminal nerve root, suggesting inhibition of trigeminal neuronal hyperexcitability and primary afferent input by BMSCs. Finally, we observed that GluN2A (N-methyl-D-aspartate receptor subunit 2A) tyrosine phosphorylation and protein kinase Cgamma (PKCg) immunoreactivity in rostral ventromedial medulla was suppressed at 8 weeks after BMSC in tendon-injured rats. CONCLUSIONS Collectively, the present work adds convergent evidence supporting the use of BMSCs in pain control. As PKCg activity related to N-methyl-D-aspartate receptor activation is critical in opioid tolerance, these results help to understand the mechanisms of BMSC-produced long-term antihyperalgesia, which requires opioid receptors in rostral ventromedial medulla and apparently lacks the development of tolerance.
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Affiliation(s)
- Wei Guo
- University of Maryland School of Denstistry
| | - Yu-Xia Chu
- University of Maryland School of DenstistryUniversity of Maryland School of DentistryUniversity of Maryland School of DentristryUniversity of Maryland School of DentistryUniversity of Maryland School of Dentistry
| | - Satoshi Imai
- University of Maryland School of DenstistryUniversity of Maryland School of DentistryUniversity of Maryland School of DentristryUniversity of Maryland School of DentistryUniversity of Maryland School of Dentistry
| | | | | | | | - Feng Wei
- University of Maryland School of DenstistryUniversity of Maryland School of DentistryUniversity of Maryland School of DentristryUniversity of Maryland School of DentistryUniversity of Maryland School of Dentistry
| | | | - Ke Ren
- University of Maryland School of DenstistryUniversity of Maryland School of DentistryUniversity of Maryland School of DentristryUniversity of Maryland School of DentistryUniversity of Maryland School of Dentistry
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Li H, Liu Y, Zhang Y, Fang D, Xu B, Zhang L, Chen T, Ren K, Nie Y, Yao S, Song X. Liposomes as a Novel Ocular Delivery System for Brinzolamide: In Vitro and In Vivo Studies. AAPS PharmSciTech 2016; 17:710-7. [PMID: 26335415 DOI: 10.1208/s12249-015-0382-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 07/28/2015] [Indexed: 11/30/2022] Open
Abstract
The objective of this study was to investigate the potential of liposomes as an ophthalmic delivery system for brinzolamide (Brz) to enhance the local glaucomatous therapeutic effect. The liposomes of Brz (Brz-LPs) were produced by the thin-film dispersion method with a particle size of 84.33 ± 2.02 nm and an entrapment efficiency of 98.32 ± 1.61%. Differential scanning calorimetry (DSC) and X-ray powder diffraction (XRD) analysis proved that Brz was successfully entrapped into Brz-LPs. Brz-LPs displayed a biphasic release pattern in vitro with burst release initially and sustained release afterwards. The corneal permeability was measured using modified Franz-type diffusion cells, and Brz-LPs showed 6.2-fold increase in the apparent permeability coefficient when compared with the commercial available formulation (B rz-Sus). Moreover, Brz-LPs (1 mg/mL Brz) showed a more sustained and effective intraocular pressure reduction (5-10 mmHg) than Brz-Sus (10 mg/mL Brz) in white New Zealand rabbits. Therefore, Brz-LPs were a hopeful formulation of Brz for glaucoma treatment and worthy of further investigation.
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Shang JN, Ren K, Wu WS, Lu T, Sun WG, Zhang HG, Li XD, Liu Y. [Investigation of renal corticomedullary differentiation with age-related change on non-contrast-enhanced MRI]. Zhonghua Yi Xue Za Zhi 2016; 96:1505-9. [PMID: 27266496 DOI: 10.3760/cma.j.issn.0376-2491.2016.19.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To evaluate the relationship between renal corticomedullary differentiation, renal cortical thickness and age-related changes with non-contrast-enhanced steady-state free precession(SSFP) magnetic resonance imaging (MRI) and spatially selective inversion recovery(IR) pulse technology as well as its applied value . METHODS A total of 76 healthy volunteers had been recruited from August 2014 to June 2015 in First Hospital of China Medical University.All volunteers were divided into three groups: 2-40 years old, 41-60 years old, 61-80 years old. All 76 volunteers underwent non-contrast-enhanced steady-state free precession(SSFP) 3.0 T MRI scan using variable inversion times (TIs)(TI=1 000, 1 100, 1 200, 1 300, 1 400, 1 500, 1 600, 1 700 ms). The renal corticomedullary differentiation was observed and the signal intensity of renal cortex and medulla were measured respectively as well in order to calculate renal corticomedullary contrast ratio. Besides, renal cortical thickness and renal size were measured. RESULTS All 76 volunteers were successfully performed all the sequences of MRI scan, including 152 useful imaging of kidney in total. The renal corticomedullary differentiation was clearly shown in all subjects. There was negative correlation between the optimal inversion time(TI) and age(r=-0.65, P<0.01). Similarly, negative correlation was observed between renal corticomedullary contrast ratio and age(r=-0.35, P<0.01). The mean renal cortical thickness of all subjects was (5.33±0.71)mm and there were statistically significant difference among those different groups, which was negative-related with age(r=-0.79, P<0.01). There was no statistically significant difference between sexuality and renal cortical thickness.Additionally, renal cortical thickness had no statistically significant difference in both sides of kidneys. CONCLUSION The renal corticomedullary differentiation is depicted clearly by means of non-contrast-enhanced steady-state free precession MRI with spatially selective inversion recovery pulse technology. The optimal inversion time decreases along with the increase of age. In the meanwhile, the renal cortical thickness could be measured truthfully and accurately.
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Affiliation(s)
- J N Shang
- Department of Radiology, First Hospital of China Medical University, Shenyang 110001, China
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171
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Yu T, Xu B, He L, Xia S, Chen Y, Zeng J, Liu Y, Li S, Tan X, Ren K, Yao S, Song X. Pigment epithelial-derived factor gene loaded novel COOH-PEG-PLGA-COOH nanoparticles promoted tumor suppression by systemic administration. Int J Nanomedicine 2016; 11:743-59. [PMID: 26955272 PMCID: PMC4772918 DOI: 10.2147/ijn.s97223] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Anti-angiogenesis has been proposed as an effective therapeutic strategy for cancer treatment. Pigment epithelium-derived factor (PEDF) is one of the most powerful endogenous anti-angiogenic reagents discovered to date and PEDF gene therapy has been recognized as a promising treatment option for various tumors. There is an urgent need to develop a safe and valid vector for its systemic delivery. Herein, a novel gene delivery system based on the newly synthesized copolymer COOH-PEG-PLGA-COOH (CPPC) was developed in this study, which was probably capable of overcoming the disadvantages of viral vectors and cationic lipids/polymers-based nonviral carriers. PEDF gene loaded CPPC nanoparticles (D-NPs) were fabricated by a modified double-emulsion water-in-oil-in-water (W/O/W) solvent evaporation method. D-NPs with uniform spherical shape had relatively high drug loading (~1.6%), probably because the introduced carboxyl group in poly (D,L-lactide-co-glycolide) terminal enhanced the interaction of copolymer with the PEDF gene complexes. An excellent in vitro antitumor effect was found in both C26 and A549 cells treated by D-NPs, in which PEDF levels were dramatically elevated due to the successful transfection of PEDF gene. D-NPs also showed a strong inhibitory effect on proliferation of human umbilical vein endothelial cells in vitro and inhibited the tumor-induced angiogenesis in vivo by an alginate-encapsulated tumor cell assay. Further in vivo antitumor investigation, carried out in a C26 subcutaneous tumor model by intravenous injection, demonstrated that D-NPs could achieve a significant antitumor activity with sharply reduced microvessel density and significantly promoted tumor cell apoptosis. Additionally, the in vitro hemolysis analysis and in vivo serological and biochemical analysis revealed that D-NPs had no obvious toxicity. All the data indicated that the novel CPPC nanoparticles were ideal vectors for the systemic delivery of PEDF gene and might be widely used as systemic gene vectors.
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Affiliation(s)
- Ting Yu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan, People's Republic of China; State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan, People's Republic of China
| | - Bei Xu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan, People's Republic of China; State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan, People's Republic of China
| | - Lili He
- College of Chemistry and Environment Protection Engineering, Southwest University for Nationalities, Chengdu, Sichuan, People's Republic of China
| | - Shan Xia
- Central Laboratory, Science Education Department, Chengdu Normal University, Chengdu, Sichuan, People's Republic of China
| | - Yan Chen
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan, People's Republic of China
| | - Jun Zeng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan, People's Republic of China
| | - Yongmei Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan, People's Republic of China
| | - Shuangzhi Li
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan, People's Republic of China
| | - Xiaoyue Tan
- Department of Pathology/Collaborative Innovation Center of Biotherapy, Medical School of Nankai University, Tianjin, People's Republic of China
| | - Ke Ren
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan, People's Republic of China
| | - Shaohua Yao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan, People's Republic of China
| | - Xiangrong Song
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan, People's Republic of China
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Xu B, Xia S, Wang F, Jin Q, Yu T, He L, Chen Y, Liu Y, Li S, Tan X, Ren K, Yao S, Zeng J, Song X. Polymeric Nanomedicine for Combined Gene/Chemotherapy Elicits Enhanced Tumor Suppression. Mol Pharm 2016; 13:663-76. [PMID: 26695934 DOI: 10.1021/acs.molpharmaceut.5b00922] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Bei Xu
- State Key
Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Shan Xia
- State Key
Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
- Central Laboratory, Science Education Department, Chengdu Normal University, Chengdu, Sichuan 610041, China
| | - Fazhan Wang
- State Key
Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Quansheng Jin
- State Key
Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Ting Yu
- State Key
Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Lili He
- College of Chemistry and Environment Protection
Engineering, Southwest University for Nationalities, Chengdu, Sichuan 610041, China
| | - Yan Chen
- State Key
Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Yongmei Liu
- State Key
Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Shuangzhi Li
- State Key
Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Xiaoyue Tan
- Department
of Pathology/Collaborative Innovation Center of Biotherapy, Medical School of Nankai University, Tianjin 300071, China
| | - Ke Ren
- State Key
Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Shaohua Yao
- State Key
Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Jun Zeng
- State Key
Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Xiangrong Song
- State Key
Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
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Wang Y, Wen J, Zhao S, Chen Z, Ren K, Sun J, Guan J. Surface Thiolation of Al Microspheres to Deposite Thin and Compact Ag Shells for High Conductivity. Langmuir 2015; 31:13441-13451. [PMID: 26574653 DOI: 10.1021/acs.langmuir.5b03590] [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: 06/05/2023]
Abstract
In this work, we have demonstrated a method for controllable thiolated functionalization coupled with electroless silver plating to achieve aluminum@silver (Al@Ag) core-shell composite particles with thin and compact layers. First, Al microspheres were functionalized by a well-known polymerizable silane coupling agent, i.e., 3-mercaptopropyltrimethoxysilane (MPTMS). Decreasing the ethanol-to-water volume ratio (F) in silane solution produces modification films with high content of thiol groups on Al microspheres, owing to the dehydration of silane molecules with hydroxyl groups on Al microspheres and self-polymerization of silane molecules. Then, ethanol was used as one of the solvents to play a major role in the uniform dispersion of silane coupling agent in the solution, resulting in uniformly distributing and covalently attaching thiol groups on Al microspheres. In electroless silver plating, thiol groups being densely grafted on the surface of Al microspheres favor the heterogeneous nucleation of Ag, since the thiol group can firmly bind with Ag(+) and enable the in situ reduction by the reducing reagent. In this manner, dense Ag nuclei tend to produce thin and compact silver shells on the Al microspheres surfaces. The as-obtained Al@Ag core-shell composite particles show a resistivity as low as (8.58 ± 0.07) × 10(-5) Ω·cm even when the Ag content is as low as 15.46 wt %. Therefore, the as-obtained Al@Ag core-shell composite particles have advantages of low weight, low silver content and high conductivity, which could make it a promising candidate for application in conductive and electromagnetic shielding composite materials.
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Affiliation(s)
- Yilong Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, ‡School of Chemistry, Chemical Engineering and Life Science, §Center for Material Research and Analysis, and ∥School of Science, Wuhan University of Technology , Wuhan 430070, P. R. China
| | - Jianghong Wen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, ‡School of Chemistry, Chemical Engineering and Life Science, §Center for Material Research and Analysis, and ∥School of Science, Wuhan University of Technology , Wuhan 430070, P. R. China
| | - Suling Zhao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, ‡School of Chemistry, Chemical Engineering and Life Science, §Center for Material Research and Analysis, and ∥School of Science, Wuhan University of Technology , Wuhan 430070, P. R. China
| | - Zhihong Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, ‡School of Chemistry, Chemical Engineering and Life Science, §Center for Material Research and Analysis, and ∥School of Science, Wuhan University of Technology , Wuhan 430070, P. R. China
| | - Ke Ren
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, ‡School of Chemistry, Chemical Engineering and Life Science, §Center for Material Research and Analysis, and ∥School of Science, Wuhan University of Technology , Wuhan 430070, P. R. China
| | - Jie Sun
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, ‡School of Chemistry, Chemical Engineering and Life Science, §Center for Material Research and Analysis, and ∥School of Science, Wuhan University of Technology , Wuhan 430070, P. R. China
| | - Jianguo Guan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, ‡School of Chemistry, Chemical Engineering and Life Science, §Center for Material Research and Analysis, and ∥School of Science, Wuhan University of Technology , Wuhan 430070, P. R. China
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Karthik A, Margulis K, Ren K, Zare RN, Leung LW. Rapid and selective detection of viruses using virus-imprinted polymer films. Nanoscale 2015; 7:18998-9003. [PMID: 26513039 DOI: 10.1039/c5nr06114h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
We prepared a nanopatterned polymer film of polydimethylsiloxane (PDMS) via virus imprinting. The imprinted surface exhibited nanoscale cavities with the mean size of 120 ± 4 nm. These cavities demonstrated the ability to preferentially capture a target virus from an aqueous suspension of ultralow volume (5 μL) after only 1 minute of contact. Two inactivated viruses with similar shape, Influenza A (HK68) and Newcastle Disease Virus (NDV), were employed as model pathogens. The polymer film, which was first imprinted with HK68 and exposed sequentially to suspensions containing fluorescently labeled NDV and HK68, was able to preferentially bind HK68 at a capture ratio of 1 : 8.0. When we reversed the procedure and imprinted with NDV, the capture ratio was 1 : 7.6. These results were obtained within 20 minutes of static exposure. The suspensions contained viruses at concentrations close to those occurring physiologically in influenza infections. The limit of detection was approximately 8 fM. Production of virus-imprinted films can be readily scaled to large quantities and yields a disposable, simple-to-use device that allows for rapid detection of viruses.
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Affiliation(s)
- A Karthik
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA.
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175
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Zhou X, Shi X, Ren K, Fan GT, Wu SJ, Zhao JN. Celecoxib inhibits cell growth and modulates the expression of matrix metalloproteinases in human osteosarcoma MG-63 cell line. Eur Rev Med Pharmacol Sci 2015; 19:4087-4097. [PMID: 26592832] [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: 06/05/2023]
Abstract
OBJECTIVE The goal of this study was to determine the effect of celecoxib, a selective COX-2 inhibitor, on the growth inhibition of osteosarcoma and its potential anticancer mechanisms. MATERIALS AND METHODS Human osteosarcoma cell line MG-63 was used as a model. The inhibitory effect of celecoxib on cell proliferation was assessed by MTT assay. Flow cytometric analysis was used to detect the effects of celecoxib on cell cycle and apoptosis. Western blot analysis was used to detect the protein expression of RECK, matrix metalloproteinase (MMP)-2 and MMP-9 in celecoxib-treated MG-63 cells. RESULTS MTT assays showed that at a range of concentrations (0-80 µg/ml), celecoxib significantly inhibited the MG-63 cell proliferation in a time- and concentration-dependent manner. The half maximal inhibitory concentration (IC50) of celecoxib was 47.5 µg/ml for 24 h-treatment and 19.2 µg/ml for 48 h-treatment. Flow cytometric analysis demonstrated that treatment with 20 µg/ml celecoxib led to a significant cell cycle arrest at S-phase and an enhancement of apoptosis induction in MG-63 cells at 24 or 48h. Moreover, compared with 24 h-treatment, 48 h-treatment induced more S-phase arrest and apoptosis in MG-63 cells. Western blot analyses revealed that the expression of MMP-2 and MMP-9 was markedly down-regulated but RECK, an inhibitor of MMPs, was markedly up-regulated in MG-63 cells exposed to 20 µg/ml celecoxib for 24 or 48h. Furthermore, the effects of celecoxib on the expression of these molecules were more evident with the increase of treatment time. CONCLUSIONS Celecoxib inhibits the MG-63 cells proliferation through S-phase arrest and apoptosis induction. Celecoxib-induced down-regulation of MMP-2 and MMP-9 and up-regulation of RECK may contribute to the apoptosis induction and an alteration in local tumor microenvironment. These findings suggest that celecoxib may exert at least in part of its anticancer effects via up-regulation of RECK to inhibit the expression of MMP-2 and MMP-9.
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Affiliation(s)
- X Zhou
- Department of Orthopedics, Jinling Hospital, Clinical School of Nanjing, Second Military Medical University, Nanjing, China.
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176
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Quan L, Zhang Y, Dusad A, Ren K, Purdue PE, Goldring SR, Wang D. The Evaluation of the Therapeutic Efficacy and Side Effects of a Macromolecular Dexamethasone Prodrug in the Collagen-Induced Arthritis Mouse Model. Pharm Res 2015; 33:186-93. [PMID: 26286188 DOI: 10.1007/s11095-015-1776-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 08/10/2015] [Indexed: 12/19/2022]
Abstract
PURPOSE To investigate the efficacy and safety of N-(2-hydroxypropyl) methacrylamide (HPMA) copolymer-dexamethasone conjugate (P-Dex) in the collagen-induced arthritis (CIA) mouse model. METHODS HPMA copolymer labeled with a near infrared fluorescence (NIRF) dye was administered to mice with CIA to validate its passive targeting to inflamed joints and utility as a drug carrier system. The CIA mice were treated with P-Dex, dexamethasone (Dex) or saline and the therapeutic efficacy and skeletal toxicity evaluated using clinical scoring and micro-computed tomography (μ-CT). RESULTS The NIRF signal of the HPMA copolymer localized to arthritic joints consistent with its passive targeting to sites of inflammation. While the CIA mice responded more rapidly to P-Dex compared to Dex, the final clinical score and endpoint μ-CT analyses of localized bone erosions indicated that both single dose P-Dex and dose equivalent daily Dex led to comparable clinical efficacy after 30 days. μ-CT analysis of the proximal tibial metaphyses showed that P-Dex treatment was associated with significantly higher BMD and BV/TV compared to Dex and the saline control, consistent with reduced glucocorticoid (GC) skeletal toxicity. CONCLUSION These results validate the therapeutic efficacy of P-Dex in the CIA mouse model. P-Dex treatment averted the adverse effects of GC's on systemic bone loss, supporting its utility in clinical development for the management of rheumatoid arthritis.
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Affiliation(s)
- Lingdong Quan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, 986025 Nebraska Medical Center, COP 3026, Omaha, Nebraska, 68198-6025, USA
| | - Yijia Zhang
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, 986025 Nebraska Medical Center, COP 3026, Omaha, Nebraska, 68198-6025, USA
| | - Anand Dusad
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, 986025 Nebraska Medical Center, COP 3026, Omaha, Nebraska, 68198-6025, USA
| | - Ke Ren
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, 986025 Nebraska Medical Center, COP 3026, Omaha, Nebraska, 68198-6025, USA
| | - P Edward Purdue
- Hospital for Special Surgery, New York, New York, 10021, USA
| | | | - Dong Wang
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, 986025 Nebraska Medical Center, COP 3026, Omaha, Nebraska, 68198-6025, USA.
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177
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Yi SQ, Ren K, Kinoshita M, Takano N, Itoh M, Ozaki N. Innervation of Extrahepatic Biliary Tract, With Special Reference to the Direct Bidirectional Neural Connections of the Gall Bladder, Sphincter of Oddi and Duodenum in Suncus murinus, in Whole-Mount Immunohistochemical Study. Anat Histol Embryol 2015; 45:184-8. [PMID: 26179953 DOI: 10.1111/ahe.12186] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 06/08/2015] [Indexed: 11/28/2022]
Abstract
Sphincter of Oddi dysfunction is one of the most important symptoms in post-cholecystectomy syndrome. Using either electrical or mechanical stimulation and retrogradely transported neuronal dyes, it has been demonstrated that there are direct neural pathways connecting gall bladder and the sphincter of Oddi in the Australian opossum and the golden hamster. In the present study, we employed whole-mount immunohistochemistry staining to observe and verify that there are two different plexuses of the extrahepatic biliary tract in Suncus murinus. One, named Pathway One, showed a fine, irregular but dense network plexus that ran adhesively and resided on/in the extrahepatic biliary tract wall, and the plexus extended into the intrahepatic area. On the other hand, named Pathway Two, exhibiting simple, thicker and straight neural bundles, ran parallel to the surface of the extrahepatic biliary tract and passed between the gall bladder and duodenum, but did not give off any branches to the liver. Pathway Two was considered to involve direct bidirectional neural connections between the duodenum and the biliary tract system. For the first time, morphologically, we demonstrated direct neural connections between gall bladder and duodenum in S. murinus. Malfunction of the sphincter of Oddi may be caused by injury of the direct neural pathways between gall bladder and duodenum by cholecystectomy. From the viewpoint of preserving the function of the major duodenal papilla and common bile duct, we emphasize the importance of avoiding kocherization of the common bile duct so as to preserve the direct neural connections between gall bladder and sphincter of Oddi.
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Affiliation(s)
- S-Q Yi
- Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 7-2-10 Higashiogu, Arakawa-Ku, Tokyo 116-8551, Japan
| | - K Ren
- Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 7-2-10 Higashiogu, Arakawa-Ku, Tokyo 116-8551, Japan
| | - M Kinoshita
- Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 7-2-10 Higashiogu, Arakawa-Ku, Tokyo 116-8551, Japan
| | - N Takano
- Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 7-2-10 Higashiogu, Arakawa-Ku, Tokyo 116-8551, Japan
| | - M Itoh
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Teikyo University, Tokyo, Japan
| | - N Ozaki
- Department of Functional Anatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
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Miao Q, Li X, Ren K, Zhao Y, Zhao L, Xu K. Improving Image Quality of Pancreatic Cancer and Surrounding Vessels with Spectral CT Imaging. Curr Med Imaging 2015. [DOI: 10.2174/157340561103150629115435] [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]
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179
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Tan Z, Miao Q, Li X, Ren K, Zhao Y, Zhao L, Li X, Liu Y, Chai R, Xu K. The primary study of low-dose pancreas perfusion by 640- slice helical CT: a whole-organ perfusion. Springerplus 2015; 4:192. [PMID: 25932375 PMCID: PMC4409948 DOI: 10.1186/s40064-015-0950-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 03/27/2015] [Indexed: 01/06/2023]
Abstract
To discuss the feasibility of low-dose whole-pancreas imaging utilizing 640-slice dynamic volume CT.80 patients (40 cases of normal pancreas and 40 patients supposed of having pancreatic carcinoma or focal pancreatic space-occupying lesions were mainly refered) referred for CT pancreas perfusion were enrolled in the study. 80 patients randomly assigned to 3 groups: Group ① (whole sequence). Group ② (odd number sequence). Group ③ (even number group)(Compared to ①, the scanning times and effective radiate dose of ② and ③ decreased about 50% respectively). The head, body, tail of each normal pancreas without any pancreatic disease, lesion and lesion-surrounding areas of each pancreatic cancer were selected as ROI, and tissue peak, blood flow are measured.According to pathology and clinical materials, 27 patients were diagnosed as pancreatic cancer; 40 patients were diagnosed as normal pancreas. The tissue peak and blood flow of the head, body, tail of normal pancreas without any pancreatic disease are 109.63 ± 16.60 and 131.90 ± 41.61, 104.38 ± 19.39 and 127.78 ± 42.52, 104.55 ± 15. 44 and 123.50 ± 33.44 respectively. The tissue peak and blood flow of pancreatic cancer is 59.59 ± 18.20 and 60.00 ± 15.36. For and between each group, there is no significant statistical difference for the tissue peak and blood flow of normal areas of the head, body, tail of normal pancreas. There is statistical difference for the tissue peak and blood flow of lesion and lesion-surrounding areas of pancreatic cancer in each group. However, there is no statistical difference for the tissue peak and blood flow of normal and diseasing areas between 3 groups.Low-dose whole-pancreas perfusion with 640-slice dynamic volume CT is feasible.
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Affiliation(s)
- Zhengwu Tan
- Department of Radiology, The first affiliated hospital, China Medical University, Shenyang, Liaoning Zip code:110001 PR China
| | - Qi Miao
- Department of Radiology, The first affiliated hospital, China Medical University, Shenyang, Liaoning Zip code:110001 PR China
| | - Xiaoling Li
- Department of Radiology, The first affiliated hospital, Heilongjiang University of Chinese Medicine, Haibin, Heilongjiang Zip code:150040 PR China
| | - Ke Ren
- Department of Radiology, The first affiliated hospital, China Medical University, Shenyang, Liaoning Zip code:110001 PR China
| | - Yu Zhao
- Department of Radiology, The first affiliated hospital, China Medical University, Shenyang, Liaoning Zip code:110001 PR China
| | - Li Zhao
- Department of Radiology, The first affiliated hospital, China Medical University, Shenyang, Liaoning Zip code:110001 PR China
| | - Xuedan Li
- Department of Radiology, The first affiliated hospital, China Medical University, Shenyang, Liaoning Zip code:110001 PR China
| | - Yi Liu
- Department of Radiology, The first affiliated hospital, China Medical University, Shenyang, Liaoning Zip code:110001 PR China
| | - Ruimei Chai
- Department of Radiology, The first affiliated hospital, China Medical University, Shenyang, Liaoning Zip code:110001 PR China
| | - Ke Xu
- Department of Radiology, The first affiliated hospital, China Medical University, Shenyang, Liaoning Zip code:110001 PR China
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180
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Ren K, Yuan H, Zhang Y, Wei X, Wang D. Macromolecular glucocorticoid prodrug improves the treatment of dextran sulfate sodium-induced mice ulcerative colitis. Clin Immunol 2015; 160:71-81. [PMID: 25869296 DOI: 10.1016/j.clim.2015.03.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Revised: 03/28/2015] [Accepted: 03/30/2015] [Indexed: 12/16/2022]
Abstract
A macromolecular prodrug (P-Dex) of dexamethasone (Dex) was developed to improve the treatment of inflammatory bowel disease (IBD). Colonic inflammation was induced by feeding mice with dextran sulfate sodium. Mice were treated with daily i.p. injection of free Dex or single i.v. injection of P-Dex, PBS or free polymer. Both P-Dex and free Dex could lower disease activity index and histology scores when compared to the controls. A single injection of P-Dex with 1/4 equivalent Dex dose had a better therapeutic effect than daily free Dex treatment. Mechanism study found that P-Dex could target the inflamed colon, and be retained by epithelial cells and local inflammatory infiltrates, suggesting that the improved efficacy of P-Dex may be attributed to its inflammation targeting, subcellular processing and activation. Collectively, these data support our hypothesis that the development of macromolecular prodrug of glucocorticoid may have the potential to improve the clinical management of IBD.
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Affiliation(s)
- Ke Ren
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Hongjiang Yuan
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Yijia Zhang
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Xin Wei
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Dong Wang
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, USA.
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181
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Wang G, Zhang X, Yu B, Ren K. Gliotoxin potentiates osteoblast differentiation by inhibiting nuclear factor-κB signaling. Mol Med Rep 2015; 12:877-84. [PMID: 25816130 PMCID: PMC4438943 DOI: 10.3892/mmr.2015.3524] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 01/30/2015] [Indexed: 11/19/2022] Open
Abstract
The differentiation of pluripotent mesenchymal stem cells to mature osteoblasts is crucial for the maintenance of the adult skeleton. In rheumatic arthritis, osteoblast differentiation is impaired by the overproduction of cytokine tumor necrosis factor (TNF)-α. It has been demonstrated that TNF-α is able to inhibit osteoblast differentiation through the activation of nuclear factor (NF)-κB signaling. As a result of the critical role of TNF-α and NF-κB in the pathogenesis of bone-loss associated diseases, these factors are regarded as key targets for the development of therapeutic agents. In the current study, the role of the NF-κB inhibitor gliotoxin (GTX) in the regulation of osteoblast differentiation was evaluated. The non-toxic GTX doses were determined to be ≤3 μg/ml. It was revealed that GTX was able to block TNF-α-induced inhibition of osteoblast differentiation, as indicated by alkaline phosphatase (ALP) activity and ALP staining assays, as well as the expression levels of osteoblast-associated genes Col I, Ocn, Bsp, Runx2, Osx and ATF4. Additionally, it was identified that gliotoxin directly promoted bone morphoge-netic protein-2-induced osteoblast differentiation. GTX was found to inhibit the accumulation of NF-κB protein p65 in the nucleus and reduce NF-κB transcriptional activity, suggesting that GTX potentiated osteoblast differentiation via the suppression of NF-κB signaling.
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Affiliation(s)
- Guangye Wang
- The Third Department of Orthopaedics, Wuhu Second People's Hospital, Wuhu, Anhui 241000, P.R. China
| | - Xiaohai Zhang
- The Third Department of Orthopaedics, Wuhu Second People's Hospital, Wuhu, Anhui 241000, P.R. China
| | - Baoqing Yu
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Centre, Shanghai 201399, P.R. China
| | - Ke Ren
- Department of Orthopedics, Nanjing General Hospital of Nanjing Military Command Region, Nanjing, Jiangsu 210002, P.R. China
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182
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Wang GY, Zhang CC, Ren K, Zhang PP, Liu CH, Zheng ZA, Chen Y, Fang R. Treatment of vertebral body compression fractures using percutaneous kyphoplasty guided by a combination of computed tomography and C-arm fluoroscopy with finger-touch guidance to determine the needle entry point. Genet Mol Res 2015; 14:1546-56. [PMID: 25867298 DOI: 10.4238/2015.march.6.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This study aimed to evaluate the results and complications of image-guided percutaneous kyphoplasty (PKP) using computed tomography (CT) and C-arm fluoroscopy, with finger-touch guidance to determine the needle entry point. Of the 86 patients (106 PKP) examined, 56 were treated for osteoporotic vertebral compression fractures and 30 for vertebral tumors. All patients underwent image-guided treatment using CT and conventional fluoroscopy, with finger-touch identification of a puncture point within a small incision (1.5 to 2 cm). Partial or complete pain relief was achieved in 98% of patients within 24 h of treatment. Moreover, a significant improvement in functional mobility and reduction in analgesic use was observed. CT allowed the detection of cement leakage in 20.7% of the interventions. No bone cement leakages with neurologic symptoms were noted. All work channels were made only once, and bone cement was distributed near the center of the vertebral body. Our study confirms the efficacy of PKP treatment in osteoporotic and oncological patients. The combination of CT and C-arm fluoroscopy with finger-touch guidance reduces the risk of complications compared with conventional fluoroscopy alone, facilitates the detection of minor cement leakage, improves the operative procedure, and results in a favorable bone cement distribution.
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Affiliation(s)
- G Y Wang
- Department of Orthopedics, Wuhu No. 2 People's Hospital, Wannan Medical College, Anhui, China
| | - C C Zhang
- Department of Orthopedics, Changhai Hospital, Second Military Medical University of Chinese PLA, Shanghai, China
| | - K Ren
- Department of Orthopedics, Gen Hospital of Nanjin Military Area Command, Nanjin, Jiangsu, China
| | - P P Zhang
- Department of Orthopedics, Wuhu No. 2 People's Hospital, Wannan Medical College, Anhui, China
| | - C H Liu
- Department of Orthopedics, Wuhu No. 2 People's Hospital, Wannan Medical College, Anhui, China
| | - Z A Zheng
- Department of Orthopedics, Wuhu No. 2 People's Hospital, Wannan Medical College, Anhui, China
| | - Y Chen
- Department of Orthopedics, Wuhu No. 2 People's Hospital, Wannan Medical College, Anhui, China
| | - R Fang
- Department of Orthopedics, Wuhu No. 2 People's Hospital, Wannan Medical College, Anhui, China
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183
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Yao N, Gao M, Ren K, Jiang X, Li Y, Jiang C, Huang D, Liu W, Wang X, Fang Z, Sun Z, Zhang J, Ni Y. PD806. Anticancer Drugs 2015; 26:148-59. [DOI: 10.1097/cad.0000000000000168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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184
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Xu Y, Tian C, Sun J, Zhang J, Ren K, Fan XY, Wang K, Wang H, Yan YE, Chen C, Shi Q, Dong XP. FBXW7-Induced MTOR Degradation Forces Autophagy to Counteract Persistent Prion Infection. Mol Neurobiol 2015; 53:706-719. [DOI: 10.1007/s12035-014-9028-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Accepted: 11/21/2014] [Indexed: 02/08/2023]
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185
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Abstract
Persistent or chronic pain is tightly associated with various environmental changes and linked to abnormal gene expression within cells processing nociceptive signaling. Epigenetic regulation governs gene expression in response to environmental cues. Recent animal model and clinical studies indicate that epigenetic regulation plays an important role in the development or maintenance of persistent pain and possibly the transition of acute pain to chronic pain, thus shedding light in a direction for development of new therapeutics for persistent pain.
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Affiliation(s)
- Guang Bai
- Program in Neuroscience, Department of Neural and Pain Sciences, University of Maryland Dental School, University of Maryland, Baltimore, MD.
| | - Ke Ren
- Program in Neuroscience, Department of Neural and Pain Sciences, University of Maryland Dental School, University of Maryland, Baltimore, MD
| | - Ronald Dubner
- Program in Neuroscience, Department of Neural and Pain Sciences, University of Maryland Dental School, University of Maryland, Baltimore, MD
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186
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Jia Z, Zhang Y, Chen YH, Dusad A, Yuan H, Ren K, Li F, Fehringer EV, Purdue PE, Goldring SR, Daluiski A, Wang D. Simvastatin prodrug micelles target fracture and improve healing. J Control Release 2014; 200:23-34. [PMID: 25542644 DOI: 10.1016/j.jconrel.2014.12.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [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: 10/07/2014] [Revised: 12/12/2014] [Accepted: 12/22/2014] [Indexed: 01/20/2023]
Abstract
Simvastatin (SIM), a widely used anti-lipidemic drug, has been identified as a bone anabolic agent. Its poor water solubility and the lack of distribution to the skeleton, however, have limited its application in the treatment of bone metabolic diseases. In this study, an amphiphilic macromolecular prodrug of SIM was designed and synthesized to overcome these limitations. The polyethylene glycol (PEG)-based prodrug can spontaneously self-assemble to form micelles. The use of SIM trimer as the prodrug's hydrophobic segment allows easy encapsulation of additional free SIM. The in vitro studies showed that SIM/SIM-mPEG micelles were internalized by MC3T3 cells via lysosomal trafficking and consistently induced expression of both BMP2 and DKK1 mRNA, suggesting that the prodrug micelle retains the biological functions of SIM. After systemic administration, optical imaging suggests that the micelles would passively target to bone fracture sites associated with hematoma and inflammation. Furthermore, flow cytometry study revealed that SIM/SIM-mPEG micelles had preferred cellular uptake by inflammatory and resident cells within the fracture callus tissue. The treatment study using a mouse osteotomy model validated the micelles' therapeutic efficacy in promoting bone fracture healing as demonstrated by micro-CT and histological analyses. Collectively, these data suggest that the macromolecular prodrug-based micelle formulation of SIM may have great potential for clinical management of impaired fracture healing.
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Affiliation(s)
- Zhenshan Jia
- The Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Yijia Zhang
- The Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Yen Hsun Chen
- Hospital for Special Surgery, New York, NY 10021, USA
| | - Anand Dusad
- The Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Hongjiang Yuan
- The Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Ke Ren
- The Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Fei Li
- The Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Edward V Fehringer
- the Department of Orthopaedic Surgery and Rehabilitation, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | | | | | | | - Dong Wang
- The Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
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187
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Abstract
Multipotent stromal cells (MSCs) have been studied as a candidate for cell-based therapy for a variety of conditions including joint diseases. Clinical studies have used MSCs to treat arthritis and related joint diseases and generated encouraging results. There is improved joint cartilage tissues and functional activity, along with reduction of pain. MSCs may also possess intrinsic analgesic properties. Studies have shown MSC-induced pain relief in animal models and the opioids are involved in this effect. Beyond tissue repair, MSCs may not need to be grafted to the injury site to produce an effect. It is hypothesized that MSCs interact with the host immune cells and the relayed signal helps to produce and maintain a long-lasting therapeutic effect including pain relief.
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Affiliation(s)
- Wei Guo
- Department of Neural & Pain Sciences, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA
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188
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Dusad A, Duryee MJ, Shaw AT, Klassen LW, Anderson DR, Wang D, Ren K, Gravallese EM, O'Dell JR, Mikuls TR, Thiele GM. Induction of bone loss in DBA/1J mice immunized with citrullinated autologous mouse type II collagen in the absence of adjuvant. Immunol Res 2014; 58:51-60. [PMID: 24371010 DOI: 10.1007/s12026-013-8479-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Joint damage in rheumatoid arthritis (RA) is characterized by cartilage and bone loss resulting in pain, deformity, and loss of joint function. Anti-citrullinated protein antibody (ACPA) has been implicated in RA pathogenesis and predicts radiographical joint damage and clinical severity. Therefore, the purpose of this study was to assess bone loss by micro-CT, histological joint damage, and ACPA levels using a mouse model of RA. Arthritis was induced by immunizing DBA/1 mice with autologous citrullinated type II mouse collagen (CIT-CII) weekly for 4 weeks. Mice immunized with autologous CII served as controls. At week 5, mice were killed, ACPA levels determined, and micro-CT performed to quantitatively analyze bone damage. Micro-CT analysis revealed significant loss of bone density, volume, and surface (p < 0.05) in bone peripheral to the inflamed joints of CIT-CII animals compared to CII controls. Histological staining demonstrated cartilage, proteoglycan, joint collagen, and bone collagen loss in the CIT-CII group compared to CII. Serum ACPA levels were increased (p = 0.03) in the CIT-CII group compared to CII, and these levels were inversely correlated with bone quantity and quality. In this study, we demonstrate that immunization with autologous CIT-CII initiates significant systemic bone and articular cartilage loss in the absence of adjuvant. Significant inverse correlations of circulating ACPA and bone quality/quantity were present. ACPA levels predict the adverse bone morphological changes in this model of early RA.
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Affiliation(s)
- Anand Dusad
- Experimental Immunology Laboratory, Omaha Veterans Administration Medical Center, Omaha, NE, 68105, USA,
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Zhu DH, Niu BL, Du HM, Ren K, Sun JM, Gong JP. Hath1 inhibits proliferation of colon cancer cells probably through up-regulating expression of Muc2 and p27 and down-regulating expression of cyclin D1. Asian Pac J Cancer Prev 2014; 13:6349-55. [PMID: 23464457 DOI: 10.7314/apjcp.2012.13.12.6349] [Citation(s) in RCA: 3] [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] [Indexed: 11/10/2022] Open
Abstract
Previous studies showed that Math1 homologous to human Hath1 can cause mouse goblet cells to differentiate. In this context it is important that the majority of colon cancers have few goblet cells. In the present study, the potential role of Hath1 in colon carcinogenesis was investigated. Sections of paraffin-embedded tissues were used to investigate the goblet cell population of normal colon mucosa, mucosa adjacent colon cancer and colon cancer samples from 48 patients. Hath1 and Muc2 expression in these samples were tested by immunohistochemistry, quantitative real-time reverse transcription -PCR and Western blotting. After the recombinant plasmid, pcDNA3.1(+)-Hath1 had been transfected into HT29 colon cancer cells, three clones were selected randomly to test the levels of Hath1 mRNA, Muc2 mRNA, Hath1, Muc2, cyclin D1 and p27 by quantitative real-time reverse transcription-PCR and Western blotting. Moreover, the proliferative ability of HT29 cells introduced with Hath1 was assessed by means of colony formation assay and xenografting. Expression of Hath1, Muc2, cyclin D1 and p27 in the xenograft tumors was also detected by Western blotting. No goblet cells were to be found in colon cancer and levels of Hath1 mRNA and Hath1, Muc2 mRNA and Muc2 were significantly down-regulated. Hath1 could decrease cyclin D1, increase p27 and Muc2 in HT29 cells and inhibit their proliferation. Hath1 may be an anti-oncogene in colon carcinogenesis.
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Affiliation(s)
- Dai-Hua Zhu
- Department of General Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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190
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Wang JH, Chen L, Ren K. Identification of primary thyroid lymphoma with medical imaging: A case report and review of the literature. Oncol Lett 2014; 8:2505-2508. [PMID: 25364417 PMCID: PMC4214466 DOI: 10.3892/ol.2014.2542] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Accepted: 04/03/2014] [Indexed: 12/31/2022] Open
Abstract
Primary thyroid lymphoma (PTL) is a rare thyroid malignancy. Clinical diagnosis of PTL may not be easily established based on imaging studies, as the imaging features of PTL are similar to those of lymphocytic thyroiditis and primary thyroid cancer. The present study describes the case of a patient who was confirmed to have PTL by intra-operative pathological diagnosis. On color Doppler ultrasound, the PTL was shown as a significantly enlarged thyroid with reduced gland echoes. Color Doppler flow imaging showed increased blood flow. By computed tomography, the thyroid was revealed to be enlarged with reduced tissue density, particularly in the left lobe and the isthmus. In addition, calcified spots and swollen lymph nodes were evident. The clinical history of the patient was obtained and the imaging results were retrospectively analyzed. The imaging features of PTL were investigated through reviewing the literature. PTL exhibits specific features on medical imaging that aid in distinguishing it from other thyroid diseases. PTL exhibits specific features on medical imaging that aid in distinguishing PTL from other thyroid diseases, which may aid the support for clinical diagnosis and improve the clinical accuracy.
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Affiliation(s)
- Jia-Huan Wang
- Department of Radiology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China ; Department of Radiology, Jilin Central Hospital, Jilin City, Jilin 132000, P.R. China
| | - Liang Chen
- Department of Radiology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Ke Ren
- Department of Radiology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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191
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Wang JH, Ren K, Sun WG, Zhao L, Zhong HS, Xu K. Effects of iodinated contrast agents on renal oxygenation level determined by blood oxygenation level dependent magnetic resonance imaging in rabbit models of type 1 and type 2 diabetic nephropathy. BMC Nephrol 2014; 15:140. [PMID: 25182068 PMCID: PMC4236662 DOI: 10.1186/1471-2369-15-140] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 08/29/2014] [Indexed: 11/30/2022] Open
Abstract
Background To evaluate the effects of contrast agents containing increasing concentrations of iodine on the renal oxygenation level determined by blood oxygenation level dependent (BOLD) magnetic resonance imaging (MRI) in a rabbit model of diabetic nephropathy. Methods BOLD-MRI was performed using saline or iodinated (I) contrast agents (200, 240, 300, 350 and 400 mg I/mL) at 1, 24, 48, and 72 h after experimentally inducing type 2 diabetic nephropathy in rabbits. Differences in renal oxygenation levels between type 1 and type 2 diabetic nephropathy were also assessed by BOLD-MRI after injecting 400 mg I/mL of contrast agent. Results Contrast agents increased the R2* values of the renal cortex, outer medulla, and inner medulla to the maximum levels at 24 h. The R2* values then decreased to their lowest levels at 72 h. The R2* was highest following injection of 400 mg I/mL, especially in the outer medulla. The R2* values were not significantly different between types 1 and 2 diabetic nephropathy. Conclusions Iodinated contrast agents had the greatest influence on renal outer medulla oxygenation level at 24 h in type 2 diabetic nephropathy, with the greatest effects observed at the 400 mg I/mL dose level. There were no differences in BOLD-MRI values between type 1 and type 2 diabetic nephropathy after administering the contrast agent at 400 mg I/mL.
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Affiliation(s)
| | - Ke Ren
- Department of Radiology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, People's Republic of China.
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192
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Jiang X, Zhou Z, Zhang Y, Yang H, Ren K. An updated meta-analysis of the signal transducer and activator of transcription 4 (STAT4) rs7574865 G/T polymorphism and rheumatoid arthritis risk in an Asian population. Scand J Rheumatol 2014; 43:477-80. [DOI: 10.3109/03009742.2014.918174] [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] [Indexed: 11/13/2022]
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193
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Guo W, Miyoshi K, Dubner R, Gu M, Li M, Liu J, Yang J, Zou S, Ren K, Noguchi K, Wei F. Spinal 5-HT3 receptors mediate descending facilitation and contribute to behavioral hypersensitivity via a reciprocal neuron-glial signaling cascade. Mol Pain 2014; 10:35. [PMID: 24913307 PMCID: PMC4067691 DOI: 10.1186/1744-8069-10-35] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 05/30/2014] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND It has been recently recognized that the descending serotonin (5-HT) system from the rostral ventromedial medulla (RVM) in the brainstem and the 5-HT3 receptor subtype in the spinal dorsal horn are involved in enhanced descending pain facilitation after tissue and nerve injury. However, the mechanisms underlying the activation of the 5-HT3 receptor and its contribution to facilitation of pain remain unclear. RESULTS In the present study, activation of spinal 5-HT3 receptors by intrathecal injection of a selective 5-HT3 receptor agonist SR 57227 induced spinal glial hyperactivity, neuronal hyperexcitability and pain hypersensitivity in rats. We found that there was neuron-to-microglia signaling via the chemokine fractalkine, microglia to astrocyte signaling via cytokine IL-18, astrocyte to neuronal signaling by IL-1β, and enhanced activation of NMDA receptors in the spinal dorsal horn. Glial hyperactivation in spinal dorsal horn after hindpaw inflammation was also attenuated by molecular depletion of the descending 5-HT system by intra-RVM Tph-2 shRNA interference. CONCLUSIONS These findings offer new insights into the cellular and molecular mechanisms at the spinal level responsible for descending 5-HT-mediated pain facilitation during the development of persistent pain after tissue and nerve injury. New pain therapies should focus on prime targets of descending facilitation-induced glial involvement, and in particular the blocking of intercellular signaling transduction between neurons and glia.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Feng Wei
- Department of Neural and Pain Sciences, Dental School; Program in Neuroscience, University of Maryland, 650 W, Baltimore St, Baltimore, Maryland 21201, USA.
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194
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Chen C, Lv Y, Zhang BY, Zhang J, Shi Q, Wang J, Tian C, Gao C, Xiao K, Ren K, Zhou W, Dong XP. Apparent Reduction of ADAM10 in Scrapie-Infected Cultured Cells and in the Brains of Scrapie-Infected Rodents. Mol Neurobiol 2014; 50:875-87. [DOI: 10.1007/s12035-014-8708-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 04/09/2014] [Indexed: 11/29/2022]
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195
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Fang DL, Chen Y, Xu B, Ren K, He ZY, He LL, Lei Y, Fan CM, Song XR. Development of lipid-shell and polymer core nanoparticles with water-soluble salidroside for anti-cancer therapy. Int J Mol Sci 2014; 15:3373-88. [PMID: 24573250 PMCID: PMC3975343 DOI: 10.3390/ijms15033373] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 01/23/2014] [Accepted: 02/06/2014] [Indexed: 02/05/2023] Open
Abstract
Salidroside (Sal) is a potent antitumor drug with high water-solubility. The clinic application of Sal in cancer therapy has been significantly restricted by poor oral absorption and low tumor cell uptake. To solve this problem, lipid-shell and polymer-core nanoparticles (Sal-LPNPs) loaded with Sal were developed by a double emulsification method. The processing parameters including the polymer types, organic phase, PVA types and amount were systemically investigated. The obtained optimal Sal-LPNPs, composed of PLGA-PEG-PLGA triblock copolymers and lipids, had high entrapment efficiency (65%), submicron size (150 nm) and negatively charged surface (−23 mV). DSC analysis demonstrated the successful encapsulation of Sal into LPNPs. The core-shell structure of Sal-LPNPs was verified by TEM. Sal released slowly from the LPNPs without apparent burst release. MTT assay revealed that 4T1 and PANC-1 cancer cell lines were sensitive to Sal treatment. Sal-LPNPs had significantly higher antitumor activities than free Sal in 4T1 and PANC-1 cells. The data indicate that LPNPs are a promising Sal vehicle for anti-cancer therapy and worthy of further investigation.
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Affiliation(s)
- Dai-Long Fang
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Yan Chen
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Bei Xu
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Ke Ren
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Zhi-Yao He
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Li-Li He
- College of Chemistry and Environment Protection Engineering, Southwest University for Nationalities, Chengdu 610041, Sichuan, China.
| | - Yi Lei
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Chun-Mei Fan
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Xiang-Rong Song
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
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196
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Abstract
In the last decade, preclinical investigations of electroacupuncture mechanisms on persistent tissue injury (inflammatory), nerve injury (neuropathic), cancer, and visceral pain have increased. These studies show that electroacupuncture activates the nervous system differently in health than in pain conditions, alleviates both sensory and affective inflammatory pain, and inhibits inflammatory and neuropathic pain more effectively at 2 to 10 Hz than at 100 Hz. Electroacupuncture blocks pain by activating a variety of bioactive chemicals through peripheral, spinal, and supraspinal mechanisms. These include opioids, which desensitize peripheral nociceptors and reduce proinflammatory cytokines peripherally and in the spinal cord, and serotonin and norepinephrine, which decrease spinal N-methyl-D-aspartate receptor subunit GluN1 phosphorylation. Additional studies suggest that electroacupuncture, when combined with low dosages of conventional analgesics, provides effective pain management which can forestall the side effects of often-debilitating pharmaceuticals.
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Affiliation(s)
- Ruixin Zhang
- Assistant Professor, Center for Integrative Medicine, School of Medicine, University of Maryland, Baltimore, Maryland
| | - Lixing Lao
- Professor, Center for Integrative Medicine, School of Medicine, University of Maryland, Baltimore, Maryland
| | - Ke Ren
- Professor, Department of Neural and Pain Sciences, Dental School, University of Maryland, Baltimore, Maryland
| | - Brian M. Berman
- Professor, Center for Integrative Medicine, School of Medicine, University of Maryland, Baltimore, Maryland
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197
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Kim YS, Chu Y, Han L, Li M, Li Z, LaVinka PC, Sun S, Tang Z, Park K, Caterina MJ, Ren K, Dubner R, Wei F, Dong X. Central terminal sensitization of TRPV1 by descending serotonergic facilitation modulates chronic pain. Neuron 2014; 81:873-887. [PMID: 24462040 DOI: 10.1016/j.neuron.2013.12.011] [Citation(s) in RCA: 224] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2013] [Indexed: 01/05/2023]
Abstract
The peripheral terminals of primary nociceptive neurons play an essential role in pain detection mediated by membrane receptors like TRPV1, a molecular sensor of heat and capsaicin. However, the contribution of central terminal TRPV1 in the dorsal horn to chronic pain has not been investigated directly. Combining primary sensory neuron-specific GCaMP3 imaging with a trigeminal neuropathic pain model, we detected robust neuronal hyperactivity in injured and uninjured nerves in the skin, soma in trigeminal ganglion, and central terminals in the spinal trigeminal nucleus. Extensive TRPV1 hyperactivity was observed in central terminals innervating all dorsal horn laminae. The central terminal TRPV1 sensitization was maintained by descending serotonergic (5-HT) input from the brainstem. Central blockade of TRPV1 or 5-HT/5-HT3A receptors attenuated central terminal sensitization, excitatory primary afferent inputs, and mechanical hyperalgesia in the territories of injured and uninjured nerves. Our results reveal central mechanisms facilitating central terminal sensitization underlying chronic pain.
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Affiliation(s)
- Yu Shin Kim
- Department of Neuroscience, Center of Sensory Biology, the Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Yuxia Chu
- Department of Neural and Pain Sciences, Program in Neuroscience, Dental School, University of Maryland, Baltimore, Maryland 21201
| | - Liang Han
- Department of Neuroscience, Center of Sensory Biology, the Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Man Li
- Department of Neural and Pain Sciences, Program in Neuroscience, Dental School, University of Maryland, Baltimore, Maryland 21201.,Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhe Li
- Department of Neuroscience, Center of Sensory Biology, the Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Pamela Colleen LaVinka
- Department of Neuroscience, Center of Sensory Biology, the Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Shuohao Sun
- Department of Neuroscience, Center of Sensory Biology, the Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | | | - Kyoungsook Park
- Department of Neuroscience, Center of Sensory Biology, the Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Michael J Caterina
- Department of Neuroscience, Center of Sensory Biology, the Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.,Department of Biological Chemistry, the Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Ke Ren
- Department of Neural and Pain Sciences, Program in Neuroscience, Dental School, University of Maryland, Baltimore, Maryland 21201
| | - Ronald Dubner
- Department of Neural and Pain Sciences, Program in Neuroscience, Dental School, University of Maryland, Baltimore, Maryland 21201
| | - Feng Wei
- Department of Neural and Pain Sciences, Program in Neuroscience, Dental School, University of Maryland, Baltimore, Maryland 21201
| | - Xinzhong Dong
- Department of Neuroscience, Center of Sensory Biology, the Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.,Howard Hughes Medical Institute, the Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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198
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Zhang J, Guo Y, Xie WL, Xu Y, Ren K, Shi Q, Zhang BY, Chen C, Tian C, Gao C, Dong XP. Disruption of glycosylation enhances ubiquitin-mediated proteasomal degradation of Shadoo in Scrapie-infected rodents and cultured cells. Mol Neurobiol 2014; 49:1373-84. [PMID: 24390475 DOI: 10.1007/s12035-013-8612-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 12/08/2013] [Indexed: 01/06/2023]
Abstract
Shadoo (Sho) is an N-glycosylated glycophosphatidylinositol-anchored protein that is expressed in the brain and exhibits neuroprotective properties. Recently, research has shown that a reduction of Sho levels may reflect the presence of PrPSc in the brain. However, the possible mechanism by which prion infection triggers down-regulation of Sho remains unclear. In the present study, Western blot and immunohistochemical assays revealed that Sho, especially glycosylated Sho, declined markedly in the brains of five scrapie agent-infected hamsters and mice at the terminal stages. Analyses of the down-regulation of Sho levels with the emergence of PrPSc C2 proteolytic fragments did not identify close association in all tested scrapie-infected models. To further investigate the mechanism of depletion of Sho in prion disease, a Sho-expressing plasmid with HA tag was introduced into a scrapie-infected cell line, SMB-S15, and its normal cell line, SMB-PS. Western blot assay revealed dramatically decreased Sho in SMB-S15 cells, especially its glycosylated form. Proteasome inhibitor MG132 reversed the decrease of nonglycosylated Sho, but had little effect on glycosylated Sho. N-acetylglucosamine transferase inhibitor tunicamycin efficiently reduced the glycosylations of Sho and PrPC in SMB-PS cells, while two other endoplasmic reticulum stress inducers showed clear inhibition of diglycosylated PrPC, but did not change the expression level and profile of Sho. Furthermore, immunoprecipitation of HA-Sho illustrated ubiquitination of Sho in SMB-S15 cells, but not in SMB-PS cells. We propose that the depletions of Sho in scrapie-infected cell lines due to inhibition of glycosylation mediate protein destabilization and subsequently proteasome degradation after modification by ubiquitination.
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Affiliation(s)
- Jin Zhang
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases (Zhejiang University), National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Chang-Bai Road 155, Beijing, 102206, People's Republic of China
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199
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Kim YS, Chu Y, Han L, Park K, Li M, Li Z, LaVinka P, Caterina MJ, Ren K, Dubner R, Wei F, Dong X. Imaging orofacial pain in mice. Mol Pain 2014. [PMCID: PMC4304368 DOI: 10.1186/1744-8069-10-s1-o2] [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: 11/17/2022] Open
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200
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Ren K, Dusad A, Yuan F, Yuan H, Purdue PE, Fehringer EV, Garvin KL, Goldring SR, Wang D. Macromolecular prodrug of dexamethasone prevents particle-induced peri-implant osteolysis with reduced systemic side effects. J Control Release 2013; 175:1-9. [PMID: 24326124 DOI: 10.1016/j.jconrel.2013.11.024] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [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: 09/19/2013] [Revised: 11/24/2013] [Accepted: 11/29/2013] [Indexed: 11/25/2022]
Abstract
Aseptic implant loosening related to implant wear particle-induced inflammation is the most common cause of failure after joint replacement. Modulation of the inflammatory reaction to the wear products represents a rational approach for preventing aseptic implant failure. Long-term treatment using anti-inflammatory agents, however, can be associated with significant systemic side effects due to the drugs' lack of tissue specificity. To address this issue, N-(2-hydroxypropyl) methacrylamide (HPMA) copolymer-dexamethasone conjugate (P-Dex) was developed and evaluated for prevention of wear particle-induced osteolysis and the loss of fixation in a murine prosthesis failure model. Daily administration of free dexamethasone (Dex) was able to prevent wear particle-induced osteolysis, as assessed by micro-CT and histological analysis. Remarkably, monthly P-Dex administration (dose equivalent to free Dex treatment) was equally effective as free dexamethasone, but was not associated with systemic bone loss (a major adverse side effect of glucocorticoids). The reduced systemic toxicity of P-Dex is related to preferential targeting of the sites of wear particle-induced inflammation and its subcellular sequestration and retention by local inflammatory cell populations, resulting in sustained therapeutic action. These results demonstrate the feasibility of utilizing a macromolecular prodrug with reduced systemic toxicity to prevent wear particle-induced osteolysis.
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Affiliation(s)
- Ke Ren
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha 68198, USA
| | - Anand Dusad
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha 68198, USA
| | - Fang Yuan
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha 68198, USA
| | - Hongjiang Yuan
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha 68198, USA
| | | | - Edward V Fehringer
- Department of Orthopaedics Surgery and Rehabilitation, University of Nebraska Medical Center, Omaha 68198, USA
| | - Kevin L Garvin
- Department of Orthopaedics Surgery and Rehabilitation, University of Nebraska Medical Center, Omaha 68198, USA
| | | | - Dong Wang
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha 68198, USA.
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