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Zhou X, Iida H, Li Y, Ota A, Zhuo L, Nobuhara R, Terajima Y, Naiki M, Reddi AH, Kimata K, Ushida T. Neurotropin® ameliorates chronic pain associated with scar formation in a mouse model: A gene expression analysis of the inflammatory response. Mol Pain 2024:17448069241245420. [PMID: 38511285 DOI: 10.1177/17448069241245420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024] Open
Abstract
BACKGROUND Scar formation after trauma and surgery involves an inflammatory response and can lead to the development of chronic pain. Neurotropin® (NTP) is a nonprotein extract from inflamed skin of rabbits inoculated with vaccinia virus and has been widely used for the treatment of chronic pain. However, the in vivo effects of NTP on painful scar formation have not been determined. To investigate the molecular mechanisms underlying the effects of NTP on the inflammatory response, we evaluated gene expression in the scar tissues and dorsal root ganglions (DRGs) of mice administered NTP and control mice. METHODS AND RESULTS Mice were injected with saline or NTP as controls, whereas the other mice underwent surgery on the left hind paw to induced painful scar formation, followed by injections of saline or NTP. Hind paw pain was evaluated by measuring the threshold for mechanical stimulation using the von Frey test. The paw withdrawal threshold gradually returned to pre-operative levels over four weeks post-operation; NTP-treated mice showed a significantly shortened recovery time of approximately three weeks, suggesting that NTP exerted an analgesic effect in this mouse model. Total RNA was extracted from the scarred hind paw tissues and DRGs were collected 1 week post-operation for a microarray analysis. A gene set enrichment analysis revealed that some gene sets related to inflammatory responses were activated or inhibited following surgery and NTP administration. Quantitative real-time reverse transcription-polymerase chain reaction data for several genes were consistent with the microarray results. CONCLUSION The administration of NTP to the hind paws of mice with painful scar formation following surgery diminished nociceptive pain and reduced the inflammatory response. NTP inhibited the expression of some genes involved in the response to surgery-induced inflammation. Therefore, NTP is a potential therapeutic option for painful scar associated with chronic pain.
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Affiliation(s)
- Xuan Zhou
- Multidisciplinary Pain CenterAichi Medical University
| | | | - Yugiang Li
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention, Ministry of EducationEast China Normal University School of Educational Sciences
| | - Akinobu Ota
- Department of BiochemistryAichi Medical University
| | - Lisheng Zhuo
- Nagoya University Graduate School of Medicine Faculty of Medicine
| | | | | | - Mitsuru Naiki
- Institute of Bio-Active ScienceNippon Zoki Pharmaceutical Co Ltd
| | - A Hari Reddi
- Orthopedic Surgery, Center for Tissue Regeneration and Repair, School of MedicineUniversity of California Davis
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Zhang J, Nishida Y, Koike H, Zhuo L, Ito K, Ikuta K, Sakai T, Imagama S. Development of Therapeutic Agent for Osteoarthritis via Inhibition of KIAA1199 Activity: Effect of Ipriflavone In Vivo. Int J Mol Sci 2023; 24:12422. [PMID: 37569797 PMCID: PMC10419624 DOI: 10.3390/ijms241512422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 07/28/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023] Open
Abstract
This study aimed to clarify the effects of ipriflavone, which effectively reduces KIAA1199 activity, on osteoarthritis (OA) development and progression in an in vivo OA mouse model. The OA model mice were divided into the ipriflavone (200 mg/kg/day) group and the control group. OA onset and progression were evaluated with the Mankin score, and KIAA1199 expression and hyaluronan (HA) accumulation were analyzed by immunostaining. The molecular weight of HA in the cartilage tissue and serum HA concentration were analyzed by chromatography and competitive HA enzyme-linked immunoassay. The effects of ipriflavone on the bovine cartilage explant culture under the influence of IL-1β were also investigated. In the ipriflavone group, Safranin-O stainability was well-preserved, resulting in significant reduction of the Mankin score (p = 0.027). KIAA1199 staining positivity decreased and HA stainability was preserved in the ipriflavone group. The serum HA concentration decreased, and the molecular weight of HA in the cartilage tissue increased in the ipriflavone group. The results of the cartilage explant culture indicated that ipriflavone could reduce GAG losses and increase the molecular weight of HA. Thus, ipriflavone may have an inhibitory effect on OA development/progression. Ipriflavone could be a therapeutic drug for OA by targeting KIAA1199 activity.
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Affiliation(s)
- Jiarui Zhang
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan; (J.Z.); (H.K.); (K.I.); (K.I.); (T.S.); (S.I.)
| | - Yoshihiro Nishida
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan; (J.Z.); (H.K.); (K.I.); (K.I.); (T.S.); (S.I.)
- Department of Rehabilitation Medicine, Nagoya University Hospital, Nagoya 466-8560, Japan
| | - Hiroshi Koike
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan; (J.Z.); (H.K.); (K.I.); (K.I.); (T.S.); (S.I.)
| | - Lisheng Zhuo
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan; (J.Z.); (H.K.); (K.I.); (K.I.); (T.S.); (S.I.)
| | - Kan Ito
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan; (J.Z.); (H.K.); (K.I.); (K.I.); (T.S.); (S.I.)
| | - Kunihiro Ikuta
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan; (J.Z.); (H.K.); (K.I.); (K.I.); (T.S.); (S.I.)
| | - Tomohisa Sakai
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan; (J.Z.); (H.K.); (K.I.); (K.I.); (T.S.); (S.I.)
- Rare Cancer Center, Nagoya University Hospital, Nagoya 466-8560, Japan
| | - Shiro Imagama
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan; (J.Z.); (H.K.); (K.I.); (K.I.); (T.S.); (S.I.)
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Zhang J, Nishida Y, Koike H, Ito K, Zhuo L, Nishida K, Kimata K, Ikuta K, Sakai T, Urakawa H, Seki T, Imagama S. Hyaluronan in articular cartilage: Analysis of hip osteoarthritis and osteonecrosis of femoral head. J Orthop Res 2023; 41:307-315. [PMID: 35538609 DOI: 10.1002/jor.25364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 03/28/2022] [Accepted: 05/05/2022] [Indexed: 02/04/2023]
Abstract
Hyaluronan (HA) plays crucial roles in the maintenance of high-quality cartilage extracellular matrix. Several studies have reported the HA in synovial fluid in patients with osteoarthritis (OA), but few have described the changes of HA in articular cartilage of OA or idiopathic osteonecrosis of the femoral head (ONFH). KIAA1199 was recently reported to have strong hyaluronidase activity. The aim of this study was to clarify the HA metabolism in OA and ONFH, particularly the involvement of KIAA1199. Immunohistochemical analysis of KIAA1199 and HA deposition was performed for human OA (n = 10), ONFH (n = 10), and control cartilage (n = 7). The concentration and molecular weight (MW) of HA were determined by competitive HA ELISA and Chromatography, respectively. Regarding HA metabolism-related molecules, HAS1, HAS2, HAS3, HYAL1, HYAL2, and KIAA1199 gene expression was assessed by reverse transcriptase polymerase chain reaction. Histological analysis showed the overexpression of KIAA1199 in OA cartilage, which was accompanied by decreased hyaluronic acid binding protein (HABP) staining compared with ONFH and control. Little KIAA1199 expression was observed in cartilage at the collapsed area of ONFH, which was accompanied by a slight decrease in HABP staining. The messenger RNA (mRNA) expression of HAS2 and KIAA1199 was upregulated in OA cartilage, while the mRNA expression of genes related to HA catabolism in ONFH cartilage showed mostly a downward trend. The MW of HA in OA cartilage increased while that in ONFH cartilage decreased. HA metabolism in ONFH is suggested to be generally indolent, and is activated in OA including high expression of KIAA1199. Interestingly, MW of HA in OA cartilage was not reduced.
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Affiliation(s)
- Jiarui Zhang
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Yoshihiro Nishida
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan.,Department of Rehabilitation Medicine, Nagoya University Hospital, Nagoya, Aichi, Japan
| | - Hiroshi Koike
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Kan Ito
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Lisheng Zhuo
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Kazuki Nishida
- Department of Biostatistics Section, Center for Advanced Medicine and Clinical Research, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Koji Kimata
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Aichi, Japan
| | - Kunihiro Ikuta
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Tomohisa Sakai
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Hiroshi Urakawa
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Taisuke Seki
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Shiro Imagama
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
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Zhuo L, Wang Z, Yang Y, Liu Z, Wang S, Song Y. Obstetric and offspring outcomes in isolated maternal hypothyroxinaemia: a systematic review and meta-analysis. J Endocrinol Invest 2022; 46:1087-1101. [PMID: 36422828 DOI: 10.1007/s40618-022-01967-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 11/12/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To examine the association between isolated maternal hypothyroxinaemia (IMH) and adverse obstetric outcomes and offspring outcomes and also investigate the effects of levothyroxine therapy on IMH for the above outcomes. METHODS We systematically searched PubMed, EMBASE, and Cochrane Library, and the reference lists of key reviews were hand searched on June 9, 2021. Two authors independently screened titles/abstracts. Full articles were further assessed if the information suggested that the study met the inclusion/exclusion criteria, and two researchers performed data extraction and risk-of-bias assessment using standardized tables. Summary relative risks or the mean difference between maternal effects and offspring outcomes were calculated by a random-effects model. RESULTS We identified 38 eligible articles (35 cohort studies and two randomized controlled trials [RCT]). Meta-analysis showed that maternal IMH was associated with increased gestational diabetes mellitus, preterm premature rupture of membranes, preterm birth, fetal distress, and macrosomia outcomes in IMH compared to euthyroid women, and the relative risks were 1.42 (1.03-1.96), 1.50 (1.05-2.14), 1.33 (1.15-1.55), 1.75 (1.16-2.65) and 1.62 (1.35-1.94), respectively. IMH was not associated with placenta previa, gestational hypertension, pre-eclampsia, intrauterine growth restriction, and offspring outcomes like birth weight, low birth weight infants, fetal macrosomia, neonatal intensive care, neonatal death, or fetal head circumference. In addition, we did not find an association between IMH and adverse offspring cognitive defects. Due to insufficient data for meta-analysis, it failed to pool the evidence of levothyroxine's therapeutic effect on IMH and their offspring. CONCLUSIONS AND RELEVANCE IMH in pregnancy may relate to a few maternal and offspring outcomes. Moreover, there is currently no sufficient evidence that levothyroxine treatment during pregnancy reduces adverse maternal outcomes and disability in offspring. Further investigation to explore the beneficial effects of levothyroxine therapy is warranted.
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Affiliation(s)
- L Zhuo
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing, People's Republic of China
| | - Z Wang
- Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, People's Republic of China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, Shandong, People's Republic of China
| | - Y Yang
- Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, People's Republic of China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, Shandong, People's Republic of China
| | - Z Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, People's Republic of China
| | - S Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, People's Republic of China.
| | - Y Song
- Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, People's Republic of China.
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, Shandong, People's Republic of China.
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Kong YX, Dong D, Chen HD, Dai M, Zhuo L, Lou T, Cai ST, Chen JJ, Pan YH, Gao H, Lu ZM, Dong HY, Zhao XH, Luo GH, Chen G. [Comparison of application effects of colonoscopy, fecal immunochemical test and a novel risk-adapted screening approach in colorectal cancer screening in Xuzhou population]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1074-1079. [PMID: 35922234 DOI: 10.3760/cma.j.cn112150-20211203-01113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To compare the application effect of the colonoscopy, fecal immunochemical test (FIT) and novel risk-adapted screening approach in colorectal cancer screening in Xuzhou population. Methods: From May 2018 to April 2019, 4 280 subjects aged 50-74 were recruited from Gulou district, Yunlong district and Quanshan district of Xuzhou. They were randomly assigned to the colonoscopy group (n=863), FIT group (n=1 723) and novel risk-adapted screening approach group (n=1 694) according to the ratio of 1∶2∶2. For the novel risk-adapted screening approach group, after the risk assessment, high-risk subjects were invited to undergo colonoscopy and low-risk subjects were invited to undergo FIT examination. All FIT positive subjects were invited to undergo colonoscopy. Colonoscopy participation rate [(the number of colonoscopies completed/the number of colonoscopies invited to participate)×100%], detection rate of colorectal lesions [(the number of diagnosed patients/the number of colonoscopies completed)×100%], colonoscopy resource load (the number of colonoscopies completed/the number of diagnosed advanced tumors) and FIT resource load in each group were calculated and compared. Results: The age of all subjects was (61±6) years old, including 1 816 males (42.43%). There was no statistically significant difference in the socio-demographic characteristics of the subjects in different screening groups. The colonoscopy participation rate was 22.60% (195/863) in the colonoscopy group, 57.04% (77/135) in the FIT group, and 33.94% (149/439) in the novel risk-adapted screening approach group, respectively. The colonoscopy participation rate was higher in the FIT group than in the colonoscopy group and the novel risk-adapted screening approach group (P<0.001). The colonoscopy participation rate of novel risk-adapted screening group was significantly higher than the colonoscopy group (P<0.001). The detection rates of advanced tumors were 6.67% (13/195), 9.09% (7/77) and 8.72% (13/149), respectively, and the difference was not statistically significant (P>0.05). The colonoscopy resource load (95%CI) was 15 (13-17) in the colonoscopy group, 11 (9-14) in the FIT group and 11 (10-13) in the novel risk-adapted screening approach group, respectively. Among them, the colonoscopy resource load of high-risk individuals in the novel risk-adapted screening approach group was 12 (9-15). FIT resource loads (95%CI) were 207 (196-218) and 88 (83-94) in the FIT group and the novel risk-adapted screening approach group. Conclusion: The combined application of risk-adapted screening approach and FIT may have a good application effect in colorectal cancer screening.
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Affiliation(s)
- Y X Kong
- Cancer Prevention and Control Office, Xuzhou Cancer Hospital, Xuzhou 221000, China
| | - D Dong
- Cancer Prevention and Control Office, Xuzhou Cancer Hospital, Xuzhou 221000, China
| | - H D Chen
- Medical Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100730, China
| | - M Dai
- Medical Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100730, China
| | - L Zhuo
- School of Public Health, Xuzhou Medical University, Xuzhou 221004, China
| | - T Lou
- Chronic Disease Prevention and Control Department, Xuzhou Center for Disease Control and Prevention, Xuzhou 221000, China
| | - S T Cai
- School of Management, Xuzhou Medical University, Xuzhou 221004, China
| | - J J Chen
- School of Management, Xuzhou Medical University, Xuzhou 221004, China
| | - Y H Pan
- School of Management, Xuzhou Medical University, Xuzhou 221004, China
| | - H Gao
- School of Public Health, Xuzhou Medical University, Xuzhou 221004, China
| | - Z M Lu
- School of Management, Xuzhou Medical University, Xuzhou 221004, China
| | - H Y Dong
- Chronic Disease Prevention and Control Department, Xuzhou Center for Disease Control and Prevention, Xuzhou 221000, China
| | - X H Zhao
- Cancer Prevention and Control Office, Xuzhou Cancer Hospital, Xuzhou 221000, China
| | - G H Luo
- Cancer Prevention and Control Office, Xuzhou Cancer Hospital, Xuzhou 221000, China
| | - Guohui Chen
- Cancer Prevention and Control Office, Xuzhou Cancer Hospital, Xuzhou 221000, China
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Xin Y, Shi HJ, Zhuo L, Zhan SY, Wang S. [A qualitative systematic review and enlightenment of teaching models and evaluation in the general education of epidemiology in China and abroad]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:922-930. [PMID: 35725351 DOI: 10.3760/cma.j.cn112338-20210909-00722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: This study aims to systematically sort out the effectiveness evaluation of the general education teaching models in epidemiology at home and abroad and provide a reference for the development and reform of epidemiology education. Methods: A systematic search of English databases such as PubMed, Embase, and Web of Science and Chinese databases such as CNKI, Sinomed, Wanfang, etc., were used to screen out the literature on different general teaching models of education in epidemiology. Each literature's teaching effect will be summarized and evaluated to conduct a systematic qualitative review in the narrative integration method, Results: A total of 45 articles (28 in Chinese and 17 in English) were included in this study, involving 14 teaching models, including mixed teaching models, PBL (problem-based learning), project designing models, and CBL (case-based learning) and other teaching models. Except for some teaching models such as project design, network platform, and flipped classroom model, the teaching effect of other innovative models is better than that of the traditional model. The distribution of teaching models was different in Chinese and foreign literature. Foreign teaching models were diverse, mainly concentrated in mixed teaching models and software/network platform learning. Domestic teaching models were relatively fixed. The mixed teaching model and PBL model were the most widely used in China, and there were fewer comparative studies between different teaching models than in foreign countries. Conclusion: General education in epidemiology is still in the early exploration stage. Compared with the traditional lecture model, the effect of various innovative teaching models has been improved. According to teaching objectives and student characteristics, we encourage extensive use of different teaching strategies, combining theoretical knowledge with practical applications and integrating epidemiological knowledge with inter-professional knowledge. Thus, students who can apply what they learn are becoming interdisciplinary talents our society needs.
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Affiliation(s)
- Y Xin
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - H J Shi
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - L Zhuo
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing 100191, China
| | - S Y Zhan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing 100191, China
| | - Shengfeng Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
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Yu YL, Zhuo L, Meng RR, Zhan SY, Wang SF. [Methodology progress and challenges on assessing the appropriateness of real-world data]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:578-585. [PMID: 35443316 DOI: 10.3760/cma.j.cn112338-20210402-00271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
From the perspective of data users, ensuring the relevance and reliability of big data in healthcare and medicine via assessments on data appropriateness is a prerequisite for generating high-quality real-world evidence, which could guarantee good representativeness and generalizability of real-world studies. This review summarized the quality dimensions, definitions, evaluation indexes and calculating methods of assessment on the appropriateness of real-world data (RWD) according to guidance from different countries and international organizations, as well as exploring the opportunities and challenges for better assessing RWD appropriateness.
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Affiliation(s)
- Y L Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - L Zhuo
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing 100191, China
| | - R R Meng
- National Institute of Health Data Science, Peking University, Beijing 100191, China
| | - S Y Zhan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing 100191, China
| | - S F Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
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JIANG S, Jiao Y, Yu T, Zou G, Gao H, Zhuo L, Li W. POS-333 Local activation of complement C3 in kidney tissue mediates diabetic tubulointerstitial injury. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Zhu ZY, Li XG, Wang RX, Tang RW, Zhao L, Yin GX, Wang ZC, Zhuo L. [Analysis of the performance of a multi-view fusion and active contour constraint based deep learning algorithm for ossicles segmentation on 10 μm otology CT]. Zhonghua Yi Xue Za Zhi 2021; 101:3897-3903. [PMID: 34905891 DOI: 10.3760/cma.j.cn112137-20210816-01840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the performance of a deep learning algorithm that combined multi-view fusion with active contour constrained for ossicles segmentation on the 10 μm otology CT images. Methods: The 10 μm otology CT image data from 79 cases (56 cases were from volunteers and 23 cases were from specimens) were retrospectively collected in the Radiology Department of Beijing Friendship Hospital from October 2019 to December 2020. An annotation of malleus, incus, and stapes were conducted. Then the datasets were established and were divided into training set (n=55), validation set (n=8), and test set (n=16). Using the rapid localization of the region of interest combined with the precise segmentation algorithm, the malleus, incus and stapes were segmented and fused from three perspectives of coronal, sagittal and cross-sectional views. Besides, an active contour loss was designed simultaneously for the segmentation of stapes. Dice similarity coefficient (DSC) was used as the objective evaluation metric for the evaluation of the segmentation results. The inter group DSC of the proposed method was compared with that of the basic method and other methods. Results: The average DSC values of the multi-view fusion segmentation algorithm for malleus, incus and stapes reached up to 94.2%±2.7%, 94.6%±2.6% and 76.0%±5.5%, respectively. After adopting the constraint of active contour loss method, the average DSC of stapes was improved (76.4%±5.4% vs 76.0%±5.5%). The visualization results also demonstrated that the segmentation results of the stapes were more complete. Conclusions: Multi-view fusion algorithm based on 10 μm otology CT images can realize accurate segmentation of malleus and incus. Combined with the constraint of active contour loss method, the segmentation accuracy of stapes can be further improved.
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Affiliation(s)
- Z Y Zhu
- Department of information, Beijing University of Technology, Beijing 100124, China
| | - X G Li
- Department of information, Beijing University of Technology, Beijing 100124, China
| | - R X Wang
- Department of information, Beijing University of Technology, Beijing 100124, China
| | - R W Tang
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - L Zhao
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - G X Yin
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Z C Wang
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - L Zhuo
- Department of information, Beijing University of Technology, Beijing 100124, China
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Nie XL, Zhuo L, Wang SF, Guo WQ, Lin Z, Chen YY, Fu ZP, Wang Q, Wang FQ, Cui S, Li HC, Shen N, Wang ZF, Duan LP, Zhan SY. [The enlightenment of foreign MD-MPH double degree program to the cultivation of high-level applied public health talents in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:1498-1503. [PMID: 34814574 DOI: 10.3760/cma.j.cn112338-20210205-00097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To understand the current status of foreign dual-degree programs of Medical Doctor (MD) and Master of Public Health (MPH) and provide evidence-based decision-making reference for promoting the education of high-level applied public health talents in China. Methods: The list of involved institutions and information of foreign MD-MPH dual-degree programs was collected through literature retrieval, online information searching, and additional survey of key figures. We extracted the details of each project regarding professional fields, core competence, length of schooling, teaching and learning arrangement, internship eligibility, and graduation assessment. Python 3.8.0 was used for data cleaning, and the occurrence frequency of related items in each dimension was calculated. Results: A total of 99 MD-MPH programs from 104 foreign institutions were included, among which 97.1% of them were implemented in universities from the United States. The School of Public Health provided 42.4% (42/99) of the programs. Epidemiology was the major discipline set up among most programs, accounting for 12.0% (29/241) of all the specialties involved. Epidemiological research methods, health policy management and practice, and public health practice were the top 3 core competencies to be mastered. Of the 99 programs, 87 gave information on the length of the program, of which 74.7% (65/87) were five years, 6.9% (6/87) were four years, and 18.4% (16/87) included both 4-year and 5-year programs. Conclusions: The international MD-MPH programs were sophisticated and mainly organized by the School of Public Health alone or in conjunction with the School of Medicine. Epidemiology is the core course and competence objective, with a length of 4-5 years. Through learning experience from international MD-MPH programs and the Chinese unique medical development background, China should optimize its medical education system to develop a suitable talent training strategy for MD-MPH dual-degree programs in the new era.
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Affiliation(s)
- X L Nie
- School of Public Health, Peking University, Beijing 100191, China Center for Clinical Epidemiology and Evidence-based Medicine, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - L Zhuo
- Peking University Third Hospital, Beijing 100191, China
| | - S F Wang
- School of Public Health, Peking University, Beijing 100191, China
| | - W Q Guo
- School of Public Health, Peking University, Beijing 100191, China
| | - Z Lin
- School of Public Health, Peking University, Beijing 100191, China
| | - Y Y Chen
- School of Public Health, Peking University, Beijing 100191, China
| | - Z P Fu
- School of Public Health, Peking University, Beijing 100191, China
| | - Q Wang
- Education office of Graduate School, Peking University Health Science Center, Beijing 100191, China
| | - F Q Wang
- Education office of Graduate School, Peking University Health Science Center, Beijing 100191, China
| | - S Cui
- Education office of Graduate School, Peking University Health Science Center, Beijing 100191, China
| | - H C Li
- Peking University First Hospital, Beijing 100034, China
| | - N Shen
- Peking University Third Hospital, Beijing 100191, China
| | - Z F Wang
- School of Public Health, Peking University, Beijing 100191, China
| | - L P Duan
- Peking University Health Science Center, Beijing 100191, China
| | - S Y Zhan
- School of Public Health, Peking University, Beijing 100191, China Peking University Third Hospital, Beijing 100191, China
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Zhuo L, Mao JX, Chen JS, Song P, Lin S, Xia SH, Chen H. [COⅠ and 16S rDNA Sequence Identification of Common Necrophagous Flies in Fujian Province]. Fa Yi Xue Za Zhi 2021; 36:749-754. [PMID: 33550721 DOI: 10.12116/j.issn.1004-5619.2020.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Indexed: 11/30/2022]
Abstract
Abstract Objective To identify the species of common necrophagous flies in Fujian Province by gene fragment sequences of mitochondrial cytochrome c oxidase subunit Ⅰ (COⅠ) and 16S ribosomal deoxyribonucleic acid (16S rDNA), and to explore the identification efficacy of these two molecular markers. Methods In total 22 common necrophagous flies were collected from the death scenes in 9 different regions in Fujian Province and DNA was extracted from the flies after morphological identification. The gene fragments of COⅠ and 16S rDNA were amplified and sequenced. All the sequences were uploaded to GeneBank and BLAST and MEGA 10.0 software were used to perform sequence alignment, homology analysis and intraspecific and interspecific genetic distance analysis. The phylogenetic trees of DNA fragment sequences of COⅠ and 16S rDNA of common necrophagous flies in Fujian Province were established by unweighted pair-group method with arithmetic means (UPGMA), respectively. Results The flies were classified into 6 species, 5 genera and 3 families by morphological identification. The results of gene sequence analysis showed that the average number of interspecific and intraspecific genetic distance of 16S rDNA ranged from 1.8% to 8.9% and 0.0% to 2.4%, respectively. The average number of interspecific and intraspecific genetic distance of COⅠ ranged from 7.2% to 13.6% and 0.0% to 6.3%, respectively. Conclusion The gene sequences of COⅠ and 16S rDNA can accurately identify the species of different necrophagous flies, and 16S rDNA showed higher value in species identification of common calliphoridae necrophagous flies in Fujian Province.
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Affiliation(s)
- L Zhuo
- Criminal Technology Corps of Fujian Provincial Public Security Department, Fuzhou 350003, China
| | - J X Mao
- Guangze Public Security Bureau, Guangze 354100, Fujian Province, China
| | - J S Chen
- Criminal Technology Corps of Fujian Provincial Public Security Department, Fuzhou 350003, China
| | - P Song
- Criminal Technology Corps of Fujian Provincial Public Security Department, Fuzhou 350003, China
| | - S Lin
- Criminal Technology Corps of Fujian Provincial Public Security Department, Fuzhou 350003, China
| | - S H Xia
- Criminal Technology Corps of Fujian Provincial Public Security Department, Fuzhou 350003, China
| | - H Chen
- Criminal Technology Corps of Fujian Provincial Public Security Department, Fuzhou 350003, China
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Koike H, Nishida Y, Shinomura T, Zhuo L, Hamada S, Ikuta K, Ito K, Kimata K, Ushida T, Ishiguro N. Forced expression of KIAA1199, a novel hyaluronidase, inhibits tumorigenicity of low-grade chondrosarcoma. J Orthop Res 2020; 38:1942-1951. [PMID: 32068299 DOI: 10.1002/jor.24629] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 01/30/2020] [Accepted: 02/11/2020] [Indexed: 02/04/2023]
Abstract
Hyaluronan (HA) has been shown to play crucial roles in the tumorigenicity of malignant tumors. Chondrosarcoma, particularly when low-grade, is characterized by the formation of an extracellular matrix (ECM) containing abundant HA, and its drug/radiation resistance has become a clinically relevant problem. This study aimed to evaluate the effects of a novel hyaluronidase, KIAA1199, on ECM formation as well as antitumor effects on chondrosarcoma. To clarify the roles of KIAA1199 in chondrosarcoma, mouse KIAA1199 was stably transfected to Swarm rat chondrosarcoma (RCS) cells (histologically grade 1). We investigated the effects of KIAA1199 on RCS cells in vitro and an autografted model in vivo. HA binding protein (HABP) stainability and ECM formation in KIAA1199-RCS was markedly suppressed compared with that of control cells. No significant changes in messenger RNA expression of Has1, Has2, Has3, Hyal1, or Hyal2 were observed. KIAA1199 expression did not affect proliferation or apoptosis but inhibited migration and invasion of RCS cells. In contrast, the expression of KIAA1199 significantly inhibited the growth of grafted tumors and suppressed the stainability of alcian blue in tumor tissues. Although there was no direct inhibitory effect on proliferation in vitro, induction of KIAA1199 showed the antitumor effects in grafted tumor growth in vivo possibly due to changes in the tumor microenvironment such as inhibition of ECM formation. Forced expression of KIAA1199 exhibits antitumor effects on low-grade chondrosarcoma, which has chemo- and radio-therapy resistant features. Together, KIAA1199 could be a novel promising therapeutic tool for low-grade chondrosarcoma, mediated by the degradation of HA.
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Affiliation(s)
- Hiroshi Koike
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Yoshihiro Nishida
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan.,Department of Rehabilitation Medicine, Nagoya University Hospital, Nagoya, Aichi, Japan
| | - Tamayuki Shinomura
- Department of Hard Tissue Engineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Lisheng Zhuo
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Shunsuke Hamada
- Department of Orthopedic Surgery, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Kunihiro Ikuta
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Kan Ito
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Koji Kimata
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Aichi, Japan
| | - Takahiro Ushida
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Aichi, Japan
| | - Naoki Ishiguro
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
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Liu YQ, Cheng Y, Zhuo L, Lu J, Zhao R, Ma L. Impact on sexual function of endoscopic enucleation versus transurethral resection of the prostate for lower urinary tract symptoms due to benign prostatic hyperplasia: A systematic review and meta-analysis. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)34069-6] [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: 10/23/2022] Open
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14
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Deng SW, Chen ZY, Liu ZK, Wang J, Zhuo L, Gao SQ, Yu JK, Zhan SY. [Epidemiological study of bone and joint injury based on urban medical insurance database]. Beijing Da Xue Xue Bao Yi Xue Ban 2020; 52:527-534. [PMID: 32541988 DOI: 10.19723/j.issn.1671-167x.2020.03.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To estimate the prevalence rate of bone and joint injury in China and to describe the three-dimension distribution of the disease (area, time and people). METHODS Based on a cross-sectional design, a retrospective study was conducted by using Chinese basic medical insurance database from January 1, 2013 to December 31, 2017 to analyze the epidemiological characteristics of bone and joint injury. The prevalence rate of bone and joint injury in each city was calculated, and then using meta-analyses to estimate the pooled prevalence of each area and the whole country. The pooled prevalence rates were compared among the different groups of populations, in terms of geographical area, time and population characteristics (age and gender). RESULTS A total of 28 419 264 subjects were included in this study, including 705 793 patients with bone and joint injury. From 2013 to 2017, in Chinese basic medical insurance database, the overall prevalence rate of bone and joint injury was 141.5(95%CI: 90.4-203.7) per 10 000 population, and the prevalence rates of non-specific or polyarticular disease, knee disease, and shoulder disease were 101.6 (95%CI: 63.5-148.4)per 10 000 population, 22.5(95%CI:15.1-31.4)per 10 000 population and 10.9 (95%CI: 6.4-16.4)per 10 000 population. The prevalence rates varied across the areas, the highest rate was observed in North China, with the prevalence of 310.6 (95%CI: 12.6-989.7) per 10 000 population, and the lowest rate was observed in Southwest China, with the prevalence of 59.0 (95%CI: 37.5-85.2) per 10 000 population. The prevalence rate of bone and joint injury increased over the study period, from 111.1 (95%CI: 56.0-182.5)per 10 000 population in 2013 to 175.5 (95%CI: 116.8-245.5)per 10 000 population in 2017. The prevalence of bone and joint injury in the female population was 149.1 (95%CI: 94.2-215.9) per 10 000 population, which was higher than that of men [133.6(95%CI: 86.2-190.9) per 10 000 population]. The higher prevalence of knee disease, unspecified or polyarticular disease, and bone and joint injury were observed in people aged 60 years and older, while the prevalence of shoulder disease peaked in 40-59 years old people [20.6 (95%CI: 12.5-30.5) per 10 000 population]. CONCLUSION This study reported a relative low prevalence of bone and joint injury in China from 2013 to 2017. The prevalence increased over the study period, and the highest prevalence rate was observed in North China. The prevalence rate showed differences among different groups of populations, and higher rates were observed in females and people aged 60 years and older.
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Affiliation(s)
- S W Deng
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - Z Y Chen
- Institute of Sports Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Z K Liu
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - J Wang
- Institute of Sports Medicine, Peking University Third Hospital, Beijing 100191, China
| | - L Zhuo
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing 100191, China
| | - S Q Gao
- Beijing North Medical & Health Economic Research Center, Beijing 100021, China
| | - J K Yu
- Institute of Sports Medicine, Peking University Third Hospital, Beijing 100191, China
| | - S Y Zhan
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
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Taylor PC, Liu J, Zhuo L, Tian Y, Snyder T, Kim C, Kheradpour P, Drake K, Kim S, Hawtin RE. OP0100 MOLECULAR PROFILING OF PERIPHERAL IMMUNE CELL SUBSETS IN PATIENTS WITH RHEUMATOID ARTHRITIS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Rheumatoid arthritis (RA) is a chronic systemic autoimmune disease that affects 1% of the world’s population. Several key biological functions are dysregulated in RA, manifesting clinically as pain, fatigue, and synovitis, with articular destruction, organ-based comorbidities, and functional decline. Defining immune dysregulation in the peripheral blood of patients (pts) with RA will help inform future work to assess the extent to which immune homeostasis can be therapeutically achieved for these pts.Objectives:To identify baseline molecular characteristics of the peripheral immune system, at the level of individual immune cell subsets, in pts with RA recruited to clinical trials of the oral, selective Janus kinase 1 (JAK1) inhibitor, filgotinib.Methods:Peripheral blood mononuclear cells (PBMC) were collected from 324 pts with moderate to severely active RA, who had an inadequate response to methotrexate ([MTX], FINCH-1;NCT02889796; n=109) or who were MTX naïve (FINCH-3;NCT02886728; n=215). PBMC were also collected from 50 demographically matched healthy volunteers (HV). The Immune Profiler platform was used to sort PBMC into 24 immune cell subsets, then quantify their gene expression and chromatin accessibility using RNA-seq and the assay for transposase-accessible chromatin with high-throughput sequencing (ATAC-seq), respectively. Differentially expressed genes (DEGs) and differentially accessible regions (DARs) were identified among immune cell subsets from pts with RA versus HV. Gene set signature scores of Molecular Signatures Database hallmark pathways were calculated using single sample gene set enrichment analysis (ssGSEA) to examine differences in pathway activity between groups.Results:A total of 14,500 sequencing datasets were generated from the pt and HV immune cell subsets. Among these, over 26,000 DEGs and 220,000 DARs were identified in RA versus HV (false discovery rate <0.05) across the 24 immune cell subsets. DEGs were identified in all immune cell subsets tested and were most pronounced in natural killer (NK) subsets; most DARs were detected in myeloid and NK subsets. ssGSEA revealed differential pathway signaling in RA versus HV across multiple functions at the immune cell subset level. Myeloid subsets from pts with RA often showed elevated pathway activities versus HV whereas B, T and NK subsets showed a general decrease. In particular, monocyte populations from pts with RA versus HV had elevated pathway activities involved in inflammatory response and interleukin-6/Janus kinase/signal transducer and activator of transcription 3 signaling. The B, T and NK subsets showed a general decrease in tumor necrosis factor-α signaling; conversely, monocyte subsets showed an increase. Prior MTX exposure did not have a notable impact on the detected molecular profile.Conclusion:Differences in gene expression, hallmark pathway activity, and chromatin accessibility were identified in RA versus HV at the immune cell subset level. Significant contributions to differences in chromatin accessibility identified in the myeloid and NK cell populations suggest that there are more active regulatory sequences in these cell types that are associated with RA. Further investigations based on these findings may increase understanding of the immune regulatory paradigm in the context of RA.Acknowledgments:This study was funded by Gilead Sciences, Inc. Editorial support was provided by Fishawack Communications Inc and funded by Gilead Sciences, Inc.Disclosure of Interests:Peter C. Taylor Grant/research support from: Celgene, Eli Lilly and Company, Galapagos, and Gilead, Consultant of: AbbVie, Biogen, Eli Lilly and Company, Fresenius, Galapagos, Gilead, GlaxoSmithKline, Janssen, Nordic Pharma, Pfizer Roche, and UCB, Jinfeng Liu Shareholder of: Gilead Sciences Inc., Roche, Employee of: Gilead Sciences Inc., Luting Zhuo Employee of: Gilead Sciences Inc., Yuan Tian Employee of: Gilead Sciences Inc., Thomas Snyder Employee of: Verily Life Sciences, Charlie Kim Employee of: Verily Life Sciences, Pouya Kheradpour Employee of: Verily Life Sciences, Kat Drake Employee of: Verily Life Sciences, Sam Kim Shareholder of: Gilead Sciences Inc., Employee of: Gilead Sciences Inc., Rachael E. Hawtin Shareholder of: Gilead Sciences Inc., Employee of: Gilead Sciences Inc.
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Li Y, Iida H, Kimata K, Zhuo L, Ota A, Kimura S, Yin X, Deie M, Ushida T. Establishment of a mouse model for injury-induced scar formation and the accompanying chronic pain: Comprehensive microarray analysis of molecular expressions in fibrosis and hyperalgesia. Mol Pain 2019; 15:1744806919892389. [PMID: 31749400 PMCID: PMC6997725 DOI: 10.1177/1744806919892389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background Surgery is often accompanied by scar formation, which results in a
pathological state called fibrosis. Fibrosis is characterized by the excess
deposition of extracellular matrix molecules in the connective tissue,
leading to tissue contracture and chronic pain. To understand the molecular
mechanisms underlying these processes and their causative relationships, we
performed comprehensive analyses of gene expression changes in the hind paw
tissue of a mouse model established by generating a scar in the sole. Results Subcutaneous tissue was extensively stripped from the sole of the operation
group mice, while a needle was inserted in the sole of the sham group mice.
Pain threshold, as evaluated by mechanical stimulation with von Frey fiber,
decreased rapidly in the operated (ipsilateral) paw and a day later in the
nonoperated (contralateral) paw. The reductions were maintained for more
than three weeks, suggesting that chronic pain spread to the other tissues
via the central nervous system. RNA from the paw and the dorsal root
ganglion (L3–L5) tissues were subjected to microarray analyses one and two
weeks following the operation. The expressions of a number of genes,
especially those coding for extracellular matrix molecules and peripheral
perceptive nerve receptors, were altered in the operation group mice paw
tissues. The expression of few genes was altered in the dorsal root ganglion
tissues; distinct upregulation of some nociceptive genes such as
cholecystokinin B receptor was observed. Results of real-time polymerase
chain reaction and immune and histochemical staining of some of the gene
products confirmed the results of the microarray analysis. Conclusion Analyses using a novel mouse model revealed the extensive involvement of
extracellular matrix-related genes and peripheral perceptive nerve receptor
genes resulting in scar formation with chronic pain. Future bioinformatics
analyses will explore the association between these relationships.
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Affiliation(s)
- Yuqiang Li
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention, Ministry of Education, School of Physical Education and Health, East China Normal University, Shanghai, China.,Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Japan
| | - Hiroki Iida
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Japan
| | - Koji Kimata
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Japan
| | - Lisheng Zhuo
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Japan
| | - Akinobu Ota
- Department of Biochemistry, Aichi Medical University, Nagakute, Japan
| | - Shinya Kimura
- Department of Rehabilitation Medicine, Aichi Medical University, Nagakute, Japan
| | - Xiaojian Yin
- Key Laboratory of Adolescent Health Assessment and Exercise Intervention, Ministry of Education, School of Physical Education and Health, East China Normal University, Shanghai, China
| | - Masataka Deie
- Department of Orthopaedic Surgery, Aichi Medical University, Nagakute, Japan
| | - Takahiro Ushida
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Japan
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Xu Y, Ding CY, Zhuo L, Zhan SY. [Developing process of guide on methodological standards in pharmacoepidemiology (T/CPHARMA 002-2019)]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:1186-1190. [PMID: 31658514 DOI: 10.3760/cma.j.issn.0254-6450.2019.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Pharmacoepidemiology refers to the use of epidemiological research methods in studying the application and use of drugs in large populations to evaluate the safety and efficacy of medical products. Therefore, standardized pharmacoepidemiology research is the basis of the above work. Based on systematic reviews of national and international pharmacoepidemiological methodological standards and guidelines, and in combination with Chinese medical and health practice and experts' opinions, the Professional Committee of Pharmacoepidemiology of Chinese Pharmaceutical Association developed the group standard, guide on methodological standards in pharmacoepidemiology (T/CPHARMA 002-2019), to better guide the work of pharmacoepidemiology. The guideline was designed to provide advice and reference for pharmacoepidemiology research by government, regulatory agencies, research institutions, and pharmaceutical manufacturers in China.
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Affiliation(s)
- Y Xu
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - C Y Ding
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - L Zhuo
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing 100191, China
| | - S Y Zhan
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
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18
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Zou GM, Zhuo L, Zhou XF, Chen HX, Li WG. [Clinical analysis of 43 cases of retroperitoneal laparoscopic renal biopsy]. Zhonghua Yi Xue Za Zhi 2019; 99:2532-2535. [PMID: 31484282 DOI: 10.3760/cma.j.issn.0376-2491.2019.32.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Percutaneous renal biopsycurrently is the most important and widely used method of renal biopsy. However, there still are some patients in whom a percutaneous approach may be considered a major risk. In these patients, renal biopsy under direct vision is a reliable alternative. We described our personal technique and experience in a series of Chinese patients who underwent retroperitoneal laparoscopic renal biopsy. Methods: We retrospectively reviewed the patients who had performed retroperitoneal laparoscopic renal biopsy over a 4-year period (Jan 2013 to Jan 2017).Forty-three patients with renal dysfunction were involved inour center.Especially some patients showed atrophic kidney and poor visualization on ultrasonography. The patients' abnormal conditions includeddialysis (10 cases), morbid obesity (5 cases), deaf-mutes (2 cases) and uncontrolled severe hypertension. The kidney was approached via alaparoscopic retroperitoneal route using athree-ports technique. Then biopsies were performed bya 16-gaugebiopsy needle, and hemostasis was achieved by compression.In less cases, a topical spray hemostatic gel was required. Results: Biopsy was performed successfully in all cases and adequate renal tissue was acquired.Mean operative time was 59.4 minutes, mean blood loss was 36.5 ml.Under general anesthesia, no anesthetic accidents and related complications were recorded. Forty-onepatients were discharged within 24 h after operation. Onepatient occurred disseminated intravascular coagulationduring operation. Red blood cell transfusion and fresh-frozen plasma infusion were performed. Injury at hilum of kidney was detected in another patient. And extrapyelogenic repair surgery was performed. Conclusions: The retroperitoneallaparoscopic renal biopsy is a safe, reliable, minimallyinvasive alternative renal biopsy method with better haemostasis, fewer complications and a rapid recovery. As the helpful supplement of percutaneous renal biopsy, this technique may have to be used more often in the future.
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Affiliation(s)
- G M Zou
- Graduate School of Peking Union Medical College, Division of Nephrology, China-Japan Friendship Hospital, Beijing 100730, China
| | - L Zhuo
- Division of Nephrology, China-Japan Friendship Hospital, Beijing 100029, China
| | - X F Zhou
- Division of Urology, China-Japan Friendship Hospital, Beijing 100029, China
| | - H X Chen
- Division of Urology, China-Japan Friendship Hospital, Beijing 100029, China
| | - W G Li
- Graduate School of Peking Union Medical College, Division of Nephrology, China-Japan Friendship Hospital, Beijing 100730, China
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Abstract
Hepatocellular carcinoma (HCC) is the second leading cause of cancer mortality worldwide. Although advances have made in treatment of HCC, the overall survival rate remains low and the molecular pathogenesis of HCC is still poorly understood. The purpose of this study was to explore the molecular pathogenesis of HCC. A total of 89 patients were involved in the study. MicroRNA-93 (miR-93) was aberrantly up-regulated in HCC tissues as determined by qRT-PCR. The high level of miR-93 was closely associated with larger tumor size (p < 0.05) and poor overall survival (p < 0.05). In in vitro and in vivo assays, we demonstrated that high miR-93 levels enhanced cell growth of HCC. The luciferase activity assay showed that PDCD4 was a direct target of miR-93 and its expression was down-regulated by miR-93. Re-expression of PDCD4 inversely correlated with the level of miR-93 and attenuated the miR-93-induced promotion of cell growth in HCC. Taken together, our data indicate that miR-93 may function as an oncogenic factor in HCC, and promotes HCC cell proliferation by targeting PDCD4.
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Abstract
Objective: To investigate the clinicopathologic features of lipoprotein glomerulopathy (LPG). Methods: A total of 6 cases (5 males and 1 female, with a mean age of 27.5 years and age range of 11-53 years) of lipoprotein glomerulopathy with complete clinicopathologic data were enrolled. Except for light microscope, immunofluorescence and electron microscopic examination, renal biopsy tissues were checked by oil red O staining. The gene map of apolipoprotein E (ApoE) of 2 cases were analyzed. Results: All 6 cases presented with heavy proteinuria or nephrotic syndrome, and high level of low-density lipoprotein (LDL), very low-density lipoprotein (vLDL), ApoE. Family history of LPG was found in 3 cases, and 2 patients progressed to uremia, or even to death. Pathologic features showed that lipoprotein deposited in glomerulus capillary lumen and renal tubular epithelial cells. Gene analysis demonstrated that 2 cases expressed abnormal ApoE gene (162G>C and 455G>C). Conclusions: Lipoprotein glomerulopathy is autosomal-recessive disease with mutation of ApoE. Common clinical manifestations of LPG are heavy proteinuria or nephrotic syndrome, with a poor prognosis. Renal biopsy pathologic diagnosis can confirm this kidney disease. Emboli of lipoprotein being observed in glomerulus capillary lumen is the pathological feature of LPG.
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Affiliation(s)
- G M Zou
- Division of Nephrology, China-Japan Friendship Hospital, Beijing 100029, China
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Goulding DR, Nikolova VD, Mishra L, Zhuo L, Kimata K, McBride SJ, Moy SS, Harry GJ, Garantziotis S. Inter-α-inhibitor deficiency in the mouse is associated with alterations in anxiety-like behavior, exploration and social approach. Genes Brain Behav 2018; 18:e12505. [PMID: 29987918 DOI: 10.1111/gbb.12505] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 06/26/2018] [Accepted: 07/06/2018] [Indexed: 12/30/2022]
Abstract
In recent years, several genome-wide association studies have identified candidate regions for genetic susceptibility in major mood disorders. Most notable are regions in a locus in chromosome 3p21, encompassing the genes NEK4-ITIH1-ITIH3-ITIH4. Three of these genes represent heavy chains of the composite protein inter-α-inhibitor (IαI). In order to further establish associations of these genes with mood disorders, we evaluated behavioral phenotypes in mice deficient in either Ambp/bikunin, which is necessary for functional ITIH1 and ITIH3 complexes, or in Itih4, the gene encoding the heavy chain Itih4. We found that loss of Itih4 had no effect on the behaviors tested, but loss of Ambp/bikunin led to increased anxiety-like behavior in the light/dark and open field tests and reduced exploratory activity in the elevated plus maze, light/dark preference and open field tests. Ambp/bikunin knockout mice also exhibited a sex-dependent exaggeration of acoustic startle responses, alterations in social approach during a three-chamber choice test, and an elevated fear conditioning response. These results provide experimental support for the role of ITIH1/ITIH3 in the development of mood disorders.
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Affiliation(s)
- David R Goulding
- Comparative Medicine Branch, Division of Intramural Research, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Viktoriya D Nikolova
- Carolina Institute for Developmental Disabilities and Department of Psychiatry, University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - Lopa Mishra
- Center for Translational Medicine, Department of Surgery, Georgetown University, Washington, District of Columbia
| | - Lisheng Zhuo
- Multidisciplinary Pain Center and the Research Creation Support Center, Aichi Medical University, Nagakute, Japan
| | - Koji Kimata
- Multidisciplinary Pain Center and the Research Creation Support Center, Aichi Medical University, Nagakute, Japan
| | | | - Sheryl S Moy
- Carolina Institute for Developmental Disabilities and Department of Psychiatry, University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - G J Harry
- Neurotoxicology Group, National Toxicology Program Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Stavros Garantziotis
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
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Zhao HY, Bian JM, Zhuo L, Wang MM, Sun F, Zhang M, Zhan SY. [Antibiotic use in emergency departments of class Ⅲ general hospitals in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:959-965. [PMID: 30060312 DOI: 10.3760/cma.j.issn.0254-6450.2018.07.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the utilization of antibiotics in emergency departments (EDs) of class Ⅲ general hospitals in China. Methods: Data from a national monitoring network for rational use of drugs was used. The data included prescriptions of EDs from 114 class Ⅲ general hospitals in 30 provinces (autonomous regions, municipalities) of China. A total of 10 260 595 prescriptions from October 1, 2014 to December 31, 2016 were extracted. The Anatomical Therapeutic Chemical Classification/Defined Daily Dose (DDD) system was used for the classification of antibiotics and calculation of antibiotic use intensity. An auto-regression model was used to analyze the trend over time and seasonal variation of antibiotic use in EDs. Results: The rate of antibiotic prescriptions was 27.82% in EDs, among the antibiotics prescribed, 25.58% were for the combination therapy with 2 or more antibiotic agents, and injectable antibiotic prescriptions accounted for 60.59%. Besides, the number of DDDs per 100 patient visits was 81.84. Broad-spectrum agents were the most commonly used antibiotics, among which the second and third generation cephalosporins, quinolones and macrolides accounted for 23.83%, 21.68%, 19.17% and 7.89% of all prescribed antibiotics, respectively. The use of antibiotics, including prescription frequency and use intensity, in EDs had a slight but significant increase tendency (P<0.05), and the seasonal variation of antibiotic use in EDs was obvious, characterized by the highest frequency and intensity of antibiotic use in winter, the differences were significant (P<0.05). Conclusion: The antibiotic prescription rate in EDs of classⅢ general hospitals in China was controlled at a low level, but the proportions of broad-spectrum antibiotics and injectable antibiotics were high, and a significant increase trend in antibiotic use in EDs was found.
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Affiliation(s)
- H Y Zhao
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - J M Bian
- Department of Pharmacology, Chinese People's Liberation Army General Hospital, Beijing 100700, China
| | - L Zhuo
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - M M Wang
- School of Public Health, Peking University, Beijing 100191, China
| | - F Sun
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - M Zhang
- Department of Pharmacology, Chinese People's Liberation Army General Hospital, Beijing 100700, China
| | - S Y Zhan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
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Hamada S, Nishida Y, Zhuo L, Shinomura T, Ikuta K, Arai E, Koike H, Kimata K, Ushida T, Ishiguro N. Suppression of hyaluronan synthesis attenuates the tumorigenicity of low-grade chondrosarcoma. J Orthop Res 2018; 36:1573-1580. [PMID: 29091320 DOI: 10.1002/jor.23794] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 10/26/2017] [Indexed: 02/04/2023]
Abstract
Hyaluronan (HA) has been shown to play crucial roles in the tumorigenicity of malignant tumors. Chondrosarcoma, particularly when low-grade, is characterized by the formation of an extracellular matrix (ECM) containing abundant HA, and its drug/radiation resistance has become a clinically relevant problem. This study aimed to evaluate the effects of an HA synthesis inhibitor, 4-methylumbelliferone (MU), on ECM formation as well as antitumor effects in chondrosarcoma. We investigated the effects of MU on rat chondrosarcoma (RCS) cells with a grade I histological malignancy in vitro and in vivo grafted model. HA binding protein (HABP) stainability on and around the RCS cells was effectively reduced with treatment of MU. ECM formation was markedly suppressed by MU at a dose of 1.0 mM. Cell proliferation was significantly reduced by MU at 24 h. Cell motility and invasion were suppressed in a dose-dependent manner by MU. No significant changes in mRNA expression of Has1-3 were observed. Furthermore, MU inhibited the growth of grafted tumors in vivo. Histologically, chondrosarcoma cells of control tumors showed a cell-clustering structure. HABP stainability was markedly decreased in the MU-treated group. These results suggest that MU exhibits antitumor effects on low-grade chondrosarcoma, via inhibition of HA accumulation and ECM formation. MU, which is an approved drug in bile therapy, could be a new off-label medication for chondrosarcomas. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:1573-1580, 2018.
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Affiliation(s)
- Shunsuke Hamada
- Department of Orthopedic Surgery, Nagoya University Graduate School and School of Medicine, 65 Tsurumai Showa, Nagoya, Aichi 466-8550, Japan
| | - Yoshihiro Nishida
- Department of Orthopedic Surgery, Nagoya University Graduate School and School of Medicine, 65 Tsurumai Showa, Nagoya, Aichi 466-8550, Japan
| | - Lisheng Zhuo
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Japan
| | - Tamayuki Shinomura
- Department of Hard Tissue Engineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kunihiro Ikuta
- Department of Orthopedic Surgery, Nagoya University Graduate School and School of Medicine, 65 Tsurumai Showa, Nagoya, Aichi 466-8550, Japan
| | - Eisuke Arai
- Department of Orthopedic Surgery, Nagoya University Graduate School and School of Medicine, 65 Tsurumai Showa, Nagoya, Aichi 466-8550, Japan
| | - Hiroshi Koike
- Department of Orthopedic Surgery, Nagoya University Graduate School and School of Medicine, 65 Tsurumai Showa, Nagoya, Aichi 466-8550, Japan
| | - Koji Kimata
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Japan
| | - Takahiro Ushida
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Japan
| | - Naoki Ishiguro
- Department of Orthopedic Surgery, Nagoya University Graduate School and School of Medicine, 65 Tsurumai Showa, Nagoya, Aichi 466-8550, Japan
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24
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Cheng YC, Pan YP, Zhang Y, Pan YT, Ding CY, Cao Y, Zhuo L, Fang RF, Gao AY, Guo J, Li AJ, Fu Q, Ma J, Zhan SY. [Investigation of the cognition and behavior on drug safety in Beijing middle school students]. Beijing Da Xue Xue Bao Yi Xue Ban 2017; 49:1038-1043. [PMID: 29263478] [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 To understand the cognition and behavior of drug safety in Beijing middle school students and provide advice for relevant education. METHODS A cross-sectional survey using paper questionnaires was carried out on the student body of nine Beijing middle schools. Multi-stage proportionate stratified cluster sampling was adopted to enroll participants. In addition to demographic questions, the questionnaire included 17 questions assessing the cognition and behavior of safe drug use, prioritizing questions that aligned with the health education guideline for primary and secondary school students from Chinese Ministry of Education. Descriptive statistical methods were applied using the SAS 9.2 software. RESULTS Of the 4 220 students investigated, 2 097(49.7%) were males and 2 123(50.3%) were females. The average age was (14.3±1.7) years. 2 030(48.1%) students were from downtown areas, 1 511(35.8%) were from urban-rural linking areas and 679(16.1%) were from rural areas. Half (51.5%) of the respondents were junior high school students, and the others were from senior high schools (34.2%) and vocational high schools (14.3%). Most of the students (89.6%) lived off campus. The awareness rate of drug safety knowledge was 74.4%, the median score of drug safety behavior was 4 points (full score was 5 points) and there was a statistically positive correlation between the two (Spearman's correlation coefficient was 0.156, P<0.001). Both the awareness rates and the drug safety behavior scores were statistically different among the students in different regions, different school types and different residence types (P<0.001). Multiple factors analysis demonstrated the correlation between the cognition degrees of both drug safety knowledge, behavior and the above factors. Of all the students, 80.4% agreed that any drug could have adverse drug reactions; 40.5% were aware that antibiotics couldn't kill viruses; as many as 49.6% mistook aspirin as antibiotic; 97.4% would read drug instructions before taking them; Only 42.4% put expired drugs into special recycling bins; 49.8% would deviate from the suggested dosage and frequency of their medication when they were sick with common diseases. CONCLUSION Overall, the cognition of drug safety in Beijing middle school students is good, but problems still exist in medication adherence, the management of expired drugs and the antibiotics cognition, which need to be fixed through specific, pointed way of education. And more efforts should be made to improve the cognition in rural regions, vocational high schools and on campus students.
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Affiliation(s)
- Y C Cheng
- Department of Epidemiology and Biostatistics,Peking University School of Public Health,Beijing 100191,China
| | - Y P Pan
- Primary and Secondary School Health Care Center of Dongcheng District, Beijing 100007, China
| | - Y Zhang
- Department of Epidemiology and Biostatistics,Peking University School of Public Health,Beijing 100191,China
| | - Y T Pan
- Department of Epidemiology and Biostatistics,Peking University School of Public Health,Beijing 100191,China
| | - C Y Ding
- Department of Epidemiology and Biostatistics,Peking University School of Public Health,Beijing 100191,China
| | - Y Cao
- Department of Epidemiology and Biostatistics,Peking University School of Public Health,Beijing 100191,China
| | - L Zhuo
- Department of Epidemiology and Biostatistics,Peking University School of Public Health,Beijing 100191,China
| | - R F Fang
- Department of Epidemiology and Biostatistics,Peking University School of Public Health,Beijing 100191,China
| | - A Y Gao
- Primary and Secondary School Health Care Center of Dongcheng District, Beijing 100007, China
| | - J Guo
- Primary and Secondary School Health Care Center of Huairou District, Beijing 101400, China
| | - A J Li
- Sports Hygiene Center of Fengtai District, Beijing 100070, China
| | - Q Fu
- Sports Hygiene Center of Fengtai District, Beijing 100070, China
| | - J Ma
- Institute of Child and Adolescent Health of Peking University, Beijing 100191, China
| | - S Y Zhan
- Department of Epidemiology and Biostatistics,Peking University School of Public Health,Beijing 100191,China
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25
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Yamaguchi Y, Noda H, Okaniwa N, Adachi K, Shinmura T, Nakagawa S, Ebi M, Ogasawara N, Funaki Y, Zhuo L, Kimata K, Sasaki M, Kasugai K. Serum-Derived Hyaluronan-Associated Protein Is a Novel Biomarker for Inflammatory Bowel Diseases. Digestion 2017; 95:146-155. [PMID: 28161704 DOI: 10.1159/000456071] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 01/13/2017] [Indexed: 02/04/2023]
Abstract
BACKGROUND/AIMS We evaluated the role of serum-derived hyaluronan-associated protein (SHAP) in inflammatory bowel disease (IBD) pathogenesis and its potential as a novel IBD biomarker. METHODS We studied the SHAP expression in a mouse model of colitis and in human intestinal samples of IBD and compared serum concentrations with normal controls. RESULTS SHAP was expressed in the connective tissue derived from inflamed regions of the intestine. In mice, serum levels of SHAP-hyaluronic acid (SHAP-HA) were positively correlated with the histological damage of the colon (r = 0.566, p < 0.001). Serum concentration of SHAP-HA complex was significantly higher in patients with active ulcerative colitis than in those in remission, and this value was positively correlated with the erythrocyte sedimentation rate, serum level of tumor necrosis factor (TNF)-α, and endoscopic damage (r = 0.568, p < 0.001; r = 0.521, p < 0.001, and r = 0.641, p < 0.001). In patients with Crohn's disease, the serum SHAP-HA level correlated only with TNF-α (r = 0.630, p = 0.002). CONCLUSION SHAP is a novel IBD biomarker that is related to disease activity in certain types of colitis, and it may affect disease pathogenesis. Future studies are needed to evaluate the therapeutic potential of this complex.
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Affiliation(s)
- Yoshiharu Yamaguchi
- Department of Gastroenterology, Aichi Medical University School of Medicine, Nagakute, Japan
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Li XX, Zhuo L, Yang YH, Zhan SY, Zhai SD. [Post-marketing surveillance of Tanreqing injection in children: a real world study]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 38:248-252. [PMID: 28231676 DOI: 10.3760/cma.j.issn.0254-6450.2017.02.023] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Objective: To evaluate the safety of Tanreqing injection among children in the real world. Methods: A multicenter, large sample, ambispective cohort study, with registration-type clinical safety monitoring. A total of 6 188 inpatients and patients from the emergency units, aged ≤ 14 years who all had been using Tanreqing injection in 59 secondary and tertiary hospitals in China, were recruited between January, 2014 and May, 2015. The main outcomes would include incidence and severity of adverse drug reaction (ADR)/adverse drug event (ADE) of Tanreqing injection. Univariate analysis was used to explain the risk factors of ADR. Results: The overall incidence of ADE was 4.20‰ (26 cases), including 4 serious ones. The incidence of ADR was 3.07‰ (19 cases), including 17 cases of general ADR and 2 cases of new ADR. All the ADR cases were mild or moderate, mostly showing damages in skin and appendages. The onset of disease happened in 24 hours after the Tanreqing injection but all the ADR cases got improved or cured. Having histories of allergies to drugs or foods would increase the incidence of ADR. Conclusion:Tanreqing injection caused low incidence of ADR in children. Progams as stratifying high-risk patients and improving administrative management could further increase the safety level of Tanreqing injection.
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Affiliation(s)
- X X Li
- Department of Pharmacy, Third Hospital, Peking University, Beijing 100191, China
| | - L Zhuo
- School of Public Health, Peking University, Beijing 100191, China
| | - Y H Yang
- Department of Pharmacy, Third Hospital, Peking University, Beijing 100191, China
| | - S Y Zhan
- School of Public Health, Peking University, Beijing 100191, China
| | - S D Zhai
- Department of Pharmacy, Third Hospital, Peking University, Beijing 100191, China
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27
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Ikuta K, Ota T, Zhuo L, Urakawa H, Kozawa E, Hamada S, Kimata K, Ishiguro N, Nishida Y. Antitumor effects of 4-methylumbelliferone, a hyaluronan synthesis inhibitor, on malignant peripheral nerve sheath tumor. Int J Cancer 2016; 140:469-479. [PMID: 27706810 DOI: 10.1002/ijc.30460] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 09/21/2016] [Accepted: 09/26/2016] [Indexed: 12/26/2022]
Abstract
Hyaluronan (HA) has been shown to play important roles in the growth, invasion and metastasis of malignant tumors. Our previous study showing that high HA expression in malignant peripheral nerve sheath tumors (MPNST) is predictive of poor patient prognosis, prompted us to speculate that inhibition of HA synthesis in MPNST might suppress the tumorigenicity. The aim of our study was to investigate the antitumor effects of 4-methylumbelliferone (MU), an HA synthesis inhibitor, on human MPNST cells and tissues. The effects of MU on HA accumulation and tumorigenicity in MPNST cells were analyzed in the presence or absence of MU in an in vitro as well as in vivo xenograft model using human MPNST cell lines, sNF96.2 (primary recurrent) and sNF02.2 (metastatic). MU significantly inhibited cell proliferation, migration and invasion in both MPNST cell lines. HA binding protein (HABP) staining, particle exclusion assay and quantification of HA revealed that MU significantly decreased HA accumulation in the cytoplasms and pericellular matrices in both MPNST cell lines. The expression levels of HA synthase2 (HAS2) and HA synthase3 (HAS3) mRNA were downregulated after treatment with MU. MU induced apoptosis of sNF96.2 cells, but not sNF02.2 cells. MU administration significantly inhibited the tumor growth of sNF96.2 cells in the mouse xenograft model. To the best of our knowledge, our study demonstrates for the first time the antitumor effects of MU on human MPNST mediated by inhibition of HA synthesis. Our results suggest that MU may be a promising agent with novel antitumor mechanisms for MPNST.
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Affiliation(s)
- Kunihiro Ikuta
- Department of Orthopaedic Surgery, Nagoya University Graduate School and School of Medicine 65, Nagoya, 466-8550, Japan
| | - Takehiro Ota
- Department of Orthopaedic Surgery, Nagoya University Graduate School and School of Medicine 65, Nagoya, 466-8550, Japan
| | - Lisheng Zhuo
- Advanced Medical Research center and Multidisciplinary Pain Center, Aichi Medical University, Nagakute, 480-1195, Japan
| | - Hiroshi Urakawa
- Department of Orthopaedic Surgery, Nagoya University Graduate School and School of Medicine 65, Nagoya, 466-8550, Japan
| | - Eiji Kozawa
- Department of Orthopaedic Surgery, Nagoya University Graduate School and School of Medicine 65, Nagoya, 466-8550, Japan
| | - Shunsuke Hamada
- Department of Orthopaedic Surgery, Nagoya University Graduate School and School of Medicine 65, Nagoya, 466-8550, Japan
| | - Koji Kimata
- Advanced Medical Research center and Multidisciplinary Pain Center, Aichi Medical University, Nagakute, 480-1195, Japan
| | - Naoki Ishiguro
- Department of Orthopaedic Surgery, Nagoya University Graduate School and School of Medicine 65, Nagoya, 466-8550, Japan
| | - Yoshihiro Nishida
- Department of Orthopaedic Surgery, Nagoya University Graduate School and School of Medicine 65, Nagoya, 466-8550, Japan
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Garantziotis S, Li Z, Potts EN, Kimata K, Zhuo L, Morgan DL, Savani RC, Noble PW, Foster WM, Schwartz DA, Hollingsworth JW. Hyaluronan mediates ozone-induced airway hyperresponsiveness in mice. J Biol Chem 2016; 291:19257-8. [PMID: 27613954 DOI: 10.1074/jbc.a116.802400] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Gao J, Chen M, Wang X, Wang H, Zhuo L. Risk factors and prognosis of acute kidney injury in adult hospitalized patients: a two-year outcome. MINERVA UROL NEFROL 2015; 67:179-185. [PMID: 25517786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM Acute kidney injury (AKI) is becoming increasingly common in hospitalized patients. A few studies have defined epidemiological data concerning hospital-acquired AKI. The aim of this study was to determine the incidence and the risk factors of hospital-acquired AKI and its treatment and prevention. METHODS A dataset of 123,105 adults who were treated in the hospital from January 2010 to December 2011, excluding patients with chronic kidney disease (CKD) and community-acquired AKI patients, was evaluated. Clinical data of blood urea nitrogen (BUN) and serum creatinine (SCr) were collected and analyzed. AKI was defined and classified according to the Acute Kidney Injury Network (AKIN). Data were compared among patients with hospital-acquired and non-hospital-acquired AKI. RESULTS Among a cohort of 123,105 hospitalized adult patients, 174 patients were identified with hospital-acquired AKI. The number of cases aged 18-39, 40-59, 60-79 and ≥80 years was, respectively, 15 (8.6%), 39 (22.4%), 82 (47.1%), and 38 (21.8%); the 60-79 years age group had the highest number. Univariate analysis showed that the unfavorable prognosis was correlated with >60 years of age, coronary heart disease, diabetes, hypotension, unconsciousness, mechanical ventilation, injuries and multiple organ dysfunction syndrome (MODS). Multivariate logistic regression analysis demonstrated that the coronary heart disease, diabetes, hypotension, mechanical ventilation and MODS were independent unfavorable prognostic factors for hospital-acquired AKI. CONCLUSION Prerenal and renal factors are the major causes of the development of hospital-acquired AKI. Thus, focusing on the potential risk factors of hospital-acquired AKI may prove to be beneficial to the prognosis of patients.
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Affiliation(s)
- J Gao
- Department of Nephrology, Xuzhou Central Hospital, Xuzhou, Jiangsu, China -
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30
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Torihashi S, Ho M, Kawakubo Y, Komatsu K, Nagai M, Hirayama Y, Kawabata Y, Takenaka-Ninagawa N, Wanachewin O, Zhuo L, Kimata K. Acute and temporal expression of tumor necrosis factor (TNF)-α-stimulated gene 6 product, TSG6, in mesenchymal stem cells creates microenvironments required for their successful transplantation into muscle tissue. J Biol Chem 2015; 290:22771-81. [PMID: 26178374 DOI: 10.1074/jbc.m114.629774] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Indexed: 12/25/2022] Open
Abstract
Previously, we demonstrated that when mesenchymal stem cells (MSCs) from mouse ES cells were transplanted into skeletal muscle, more than 60% of them differentiated into muscles in the crush-injured tibialis anterior muscle in vivo, although MSCs neither differentiated nor settled in the intact muscle. Microenvironments, including the extracellular matrix between the injured and intact muscle, were quite different. In the injured muscle, hyaluronan (HA), heavy chains of inter-α-inhibitor (IαI), CD44, and TNF-α-stimulated gene 6 product (TSG-6) increased 24-48 h after injury, although basement membrane components of differentiated muscle such as perlecan, laminin, and type IV collagen increased gradually 4 days after the crush. We then investigated the microenvironments crucial for cell transplantation, using the lysate of C2C12 myotubules for mimicking injured circumstances in vivo. MSCs settled in the intact muscle when they were transplanted together with the C2C12 lysate or TSG6. MSCs produced and released TSG6 when they were cultured with C2C12 lysates in vitro. MSCs pretreated with the lysate also settled in the intact muscle. Furthermore, MSCs whose TSG6 was knocked down by shRNA, even if transplanted or pretreated with the lysate, could not settle in the muscle. Immunofluorescent staining showed that HA and IαI always co-localized or were distributed closely, suggesting formation of covalent complexes, i.e. the SHAP-HA complex in the presence of TSG6. Thus, TSG6, HA, and IαI were crucial factors for the settlement and probably the subsequent differentiation of MSCs.
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Affiliation(s)
- Shigeko Torihashi
- From the Department of Rehabilitation Sciences, Nagoya University Graduate School of Medicine, Nagoya 461-9673, Japan
| | - Mioko Ho
- the Department of Physical Therapy, Nagoya University School of Health Sciences, Nagoya 461-8673, Japan
| | - Yuji Kawakubo
- the Department of Physical Therapy, Nagoya University School of Health Sciences, Nagoya 461-8673, Japan
| | - Kazumi Komatsu
- the Department of Physical Therapy, Nagoya University School of Health Sciences, Nagoya 461-8673, Japan
| | - Masataka Nagai
- the Department of Physical Therapy, Nagoya University School of Health Sciences, Nagoya 461-8673, Japan
| | - Yuri Hirayama
- the Department of Physical Therapy, Nagoya University School of Health Sciences, Nagoya 461-8673, Japan
| | - Yuka Kawabata
- From the Department of Rehabilitation Sciences, Nagoya University Graduate School of Medicine, Nagoya 461-9673, Japan
| | - Nana Takenaka-Ninagawa
- From the Department of Rehabilitation Sciences, Nagoya University Graduate School of Medicine, Nagoya 461-9673, Japan, the Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, Kyoto 606-8507, Japan, and
| | - Orawan Wanachewin
- the Advanced Medical Research Center and Multidisciplinary Pain Center, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi 480-1195, Japan, the Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Lisheng Zhuo
- the Advanced Medical Research Center and Multidisciplinary Pain Center, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi 480-1195, Japan
| | - Koji Kimata
- the Advanced Medical Research Center and Multidisciplinary Pain Center, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi 480-1195, Japan,
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Yoshioka Y, Kozawa E, Urakawa H, Arai E, Futamura N, Zhuo L, Kimata K, Ishiguro N, Nishida Y. Inhibition of hyaluronan synthesis alters sulfated glycosaminoglycans deposition during chondrogenic differentiation in ATDC5 cells. Histochem Cell Biol 2015; 144:167-77. [DOI: 10.1007/s00418-015-1325-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/21/2015] [Indexed: 12/01/2022]
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32
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Zhuo L, Changmeng L, Dong L, Huaming W. Effect of heat treatment on microstructure and tensile properties of laser deposited titanium alloy TC21. ACTA ACUST UNITED AC 2014. [DOI: 10.1179/1432891714z.000000000812] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- L. Zhuo
- Key Laboratory of Aerospace Materials of the Ministry of EducationBeihang University, Beijing, China
| | - L. Changmeng
- Key Laboratory of Aerospace Materials of the Ministry of EducationBeihang University, Beijing, China
| | - L. Dong
- Key Laboratory of Aerospace Materials of the Ministry of EducationBeihang University, Beijing, China
| | - W. Huaming
- Key Laboratory of Aerospace Materials of the Ministry of EducationBeihang University, Beijing, China
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Abstract
The sentinel roles of mammalian mast cells (MCs) in varied infections raised the question of their evolutionary origin. We discovered that the test cells in the sea squirt Ciona intestinalis morphologically and histochemically resembled cutaneous human MCs. Like the latter, C. intestinalis test cells stored histamine and varied heparin·serine protease complexes in their granules. Moreover, they exocytosed these preformed mediators when exposed to compound 48/80. In support of the histamine data, a C. intestinalis-derived cDNA was isolated that resembled that which encodes histidine decarboxylase in human MCs. Like heparin-expressing mammalian MCs, activated test cells produced prostaglandin D2 and contained cDNAs that encode a protein that resembles the synthase needed for its biosynthesis in human MCs. The accumulated morphological, histochemical, biochemical, and molecular biology data suggest that the test cells in C. intestinalis are the counterparts of mammalian MCs that reside in varied connective tissues. The accumulated data point to an ancient origin of MCs that predates the emergence of the chordates >500million years ago, well before the development of adaptive immunity. The remarkable conservation of MCs throughout evolution is consistent with their importance in innate immunity.
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Affiliation(s)
- G William Wong
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
| | - Lisheng Zhuo
- Research Complex for the Medicine Frontiers, Aichi Medical University, Nagakute, Aichi 480 1195, Japan
| | - Koji Kimata
- Research Complex for the Medicine Frontiers, Aichi Medical University, Nagakute, Aichi 480 1195, Japan
| | - Bing K Lam
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Nori Satoh
- Marine Genomics Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 904-0495, Japan
| | - Richard L Stevens
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
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34
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Ikuta K, Urakawa H, Kozawa E, Arai E, Zhuo L, Futamura N, Hamada S, Kimata K, Ishiguro N, Nishida Y. Hyaluronan expression as a significant prognostic factor in patients with malignant peripheral nerve sheath tumors. Clin Exp Metastasis 2014; 31:715-25. [PMID: 24957185 DOI: 10.1007/s10585-014-9662-5] [Citation(s) in RCA: 9] [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: 10/09/2013] [Accepted: 06/06/2014] [Indexed: 01/30/2023]
Abstract
Hyaluronan (HA) regulates malignant tumor growth, invasion, and metastasis. However, few studies have focused on the roles of HA in tumorigenicity in malignant peripheral nerve sheath tumors (MPNST). In this study, we sought to clarify the prognostic value of HA in patients with MPNST. Specimens obtained from 15 patients with neurofibroma and 30 with MPNST were subjected to HA staining and scored as three grades. Protein expressions of HA synthase 1-3 were examined in the 22 MPNST tissue samples available. Statistically higher HA positivity was observed in MPNST as compared with neurofibroma (P = 0.020). The univariate analysis revealed that increased HA expression, age, neurofibromatosis type 1 (NF1) status, large tumor size, and histological grade were significantly associated with reduced overall survival of patients with MPNST; while increased HA expression, NF1 status, tumor size, and histological grade were correlated with disease-free survival. However, HA synthase 1-3 expression related to neither overall survival nor disease-free survival of these patients. In multivariate analysis, large tumor size (P = 0.022) was an independent prognostic factor for overall survival, and HA expression (P = 0.028) and tumor size (P = 0.002) were independent prognostic factors for disease-free survival. Statistically higher levels of HA in the human MPNST cells were observed compared with neurofibroma cells in vitro. Our results demonstrate that HA expression can be a useful marker in differentiating MPNST from neurofibroma, and in identifying patients with a poor prognosis. Hyaluronan-targeting therapy for patients with MPNST may have potential as a therapeutic tool.
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Affiliation(s)
- Kunihiro Ikuta
- Department of Orthopaedic Surgery, Nagoya University Graduate School and School of Medicine, 65 Tsurumai, Showa, Nagoya, Aichi, 466-8550, Japan
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McDonald B, Jenne CN, Zhuo L, Kimata K, Kubes P. Kupffer cells and activation of endothelial TLR4 coordinate neutrophil adhesion within liver sinusoids during endotoxemia. Am J Physiol Gastrointest Liver Physiol 2013; 305:G797-806. [PMID: 24113769 DOI: 10.1152/ajpgi.00058.2013] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A key pathological feature of the systemic inflammatory response of sepsis/endotoxemia is the accumulation of neutrophils within the microvasculature of organs such as the liver, where they cause tissue damage and vascular dysfunction. There is emerging evidence that the vascular endothelium is critical to the orchestration of inflammatory responses to blood-borne microbes and microbial products in sepsis/endotoxemia. In this study, we aimed to understand the role of endothelium, and specifically endothelial TLR4 activation, in the regulation of neutrophil recruitment to the liver during endotoxemia. Intravital microscopy of bone marrow chimeric mice revealed that TLR4 expression by non-bone marrow-derived cells was required for neutrophil recruitment to the liver during endotoxemia. Furthermore, LPS-induced neutrophil adhesion in liver sinusoids was equivalent between wild-type mice and transgenic mice that express TLR4 only on endothelium (tlr4(-/-)Tie2(tlr4)), revealing that activation of endothelial TLR4 alone was sufficient to initiate neutrophil adhesion. Neutrophil arrest within sinusoids of endotoxemic mice requires adhesive interactions between neutrophil CD44 and endothelial hyaluronan. Intravital immunofluorescence imaging demonstrated that stimulation of endothelial TLR4 alone was sufficient to induce the deposition of serum-derived hyaluronan-associated protein (SHAP) within sinusoids, which was required for CD44/hyaluronan-dependent neutrophil adhesion. In addition to endothelial TLR4 activation, Kupffer cells contribute to neutrophil recruitment via a distinct CD44/HA/SHAP-independent mechanism. This study sheds new light on the control of innate immune activation within the liver vasculature during endotoxemia, revealing a key role for endothelial cells as sentinels in the detection of intravascular infections and coordination of neutrophil recruitment to the liver.
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Affiliation(s)
- Braedon McDonald
- Director, Snyder Institute for Chronic Disease, Dept. of Physiology and Pharmacology, Univ. of Calgary, Alberta, Canada, 3330 Hospital Dr. NW, Calgary, AB, T2N 4N1, Canada.
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Lord MS, Day AJ, Youssef P, Zhuo L, Watanabe H, Caterson B, Whitelock JM. Sulfation of the bikunin chondroitin sulfate chain determines heavy chain·hyaluronan complex formation. J Biol Chem 2013; 288:22930-41. [PMID: 23801333 PMCID: PMC3743471 DOI: 10.1074/jbc.m112.404186] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Indexed: 11/06/2022] Open
Abstract
Inter-α-trypsin inhibitor (IαI) is a complex comprising two heavy chains (HCs) that are covalently bound by an ester bond to chondroitin sulfate (CS), which itself is attached to Ser-10 of bikunin. IαI is essential for the trans-esterification of HCs onto hyaluronan (HA). This process is important for the stabilization of HA-rich matrices during ovulation and some inflammatory processes. Bikunin has been isolated previously by anion exchange chromatography with a salt gradient up to 0.5 M NaCl and found to contain unsulfated and 4-sulfated CS disaccharides. In this study, bikunin-containing fractions in plasma and urine were separated by anion exchange chromatography with a salt gradient of 0.1-1.0 M NaCl, and fractions were analyzed for their reactivity with the 4-sulfated CS linkage region antibody (2B6). The fractions that reacted with the 2B6 antibody (0.5-0.8 M NaCl) were found to predominantly contain sulfated CS disaccharides, including disulfated disaccharides, whereas the fractions that did not react with this antibody (0.1-0.5 M NaCl) contained unsulfated and 4-sulfated CS disaccharides. IαI in the 0.5-0.8 M NaCl plasma fraction was able to promote the trans-esterification of HCs to HA in the presence of TSG-6, whereas the 0.1-0.5 M NaCl fraction had a much reduced ability to transfer HC proteins to HA, suggesting that the CS containing 4-sulfated linkage region structures and disulfated disaccharides are involved in the HC transfer. Furthermore, these data highlight that the structure of the CS attached to bikunin is important for the transfer of HC onto HA and emphasize a specific role of CS chain sulfation.
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Affiliation(s)
- Megan S Lord
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia.
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Yoshioka Y, Kozawa E, Urakawa H, Arai E, Futamura N, Zhuo L, Kimata K, Ishiguro N, Nishida Y. Suppression of Hyaluronan Synthesis Alleviates Inflammatory Responses in Murine Arthritis and in Human Rheumatoid Synovial Fibroblasts. ACTA ACUST UNITED AC 2013; 65:1160-70. [DOI: 10.1002/art.37861] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 01/03/2013] [Indexed: 11/06/2022]
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Zhuo L, Tian-ming Y, Jing-yang S, Geng W, Yu H, Ya-ling H. Novel miniature mobile cardiac catheterisation laboratory for ST-elevation myocardial infarction following natural disaster: a feasibility study. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Yabushita H, Iwasaki K, Kanyama K, Obayashi Y, Zhuo L, Itano N, Kimata K, Wakatsuki A. Clinicopathological Role of Serum-Derived Hyaluronan-Associated Protein (SHAP)-Hyaluronan Complex in Endometrial Cancer. Obstet Gynecol Int 2011; 2011:739150. [PMID: 21904555 PMCID: PMC3166775 DOI: 10.1155/2011/739150] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Revised: 07/04/2011] [Accepted: 07/04/2011] [Indexed: 11/21/2022] Open
Abstract
The role of hyaluronan (HA), serum-derived HA-associated protein (SHAP)-HA complex and hyaluronan synthase (HAS) in endometrial carcinomas was investigated. The relationship of metalloproteinase (MMP) and its inhibitor (TIMP) with HA and the SHAP-HA complex was also examined. The expression of HAS1 was related to the depth of myometrial invasion and lymph-vascular space involvement. The serum levels of HA, SHAP-HA complex, MMP-9, and TIMP-1 were increased in related with the depth of myometrial invasion, histological grade and lymph-vascular space involvement. They were also higher in the HAS1-positive group compared to -negative group. The serum concentrations of HA and SHAP-HA complex had a significant correlation with the MMP-9 and TIMP-1. The patients with elevated SHAP-HA complex had the shorter disease-free survival. The multivariate analysis revealed that the SHAP-HA complex was the independent variable for disease-free survival of endometrial cancer patients. In conclusion, the elevation of serum SHAP-HA complex depended on the HAS1 expression and the SHAP-HA complex is a useful marker to predict disease recurrence in endometrial cancer patients. The SHAP-HA complex may promote the lymph-vascular space involvement and the synthesis and activation of MMP-9 and TIMP-1 in the progression of endometrial cancer.
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Affiliation(s)
- Hiromitsu Yabushita
- Department of Obstetrics and Gynecology, School of Medicine, Aichi Medical University, Nagakute-cho, Aichi 480-1195, Japan
| | - Keita Iwasaki
- Department of Obstetrics and Gynecology, School of Medicine, Aichi Medical University, Nagakute-cho, Aichi 480-1195, Japan
| | - Kouhei Kanyama
- Department of Obstetrics and Gynecology, Toyokawa City Hospital, Toyakawa, Aichi 422-8561, Japan
| | - Yukihiko Obayashi
- Department of Obstetrics and Gynecology, School of Medicine, Aichi Medical University, Nagakute-cho, Aichi 480-1195, Japan
| | - Lisheng Zhuo
- Research Complex for the Medicine Frontiers, School of Medicine, Aichi Medical University, Nagakute-cho, Aichi 480-1195, Japan
| | - Naoki Itano
- Department of Molecular Biosciences, Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555, Japan
| | - Koji Kimata
- Research Complex for the Medicine Frontiers, School of Medicine, Aichi Medical University, Nagakute-cho, Aichi 480-1195, Japan
| | - Akihiko Wakatsuki
- Department of Obstetrics and Gynecology, School of Medicine, Aichi Medical University, Nagakute-cho, Aichi 480-1195, Japan
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Lopez-Parra V, Mallavia B, Oguiza A, Recio C, Egido J, Gomez-Guerrero C, Ito M, Nishio S, Koike T, Takayanagi K, Hasegawa H, Shimizu T, Asakura J, Iwashita T, Tayama Y, Hara H, Inamura M, Kanozawa K, Kato H, Mitarai T, Sanchez-Nino MD, Sanchez-Lopez E, Sanz AB, Ruiz-Ortega M, Saleem MA, Mathieson PW, Mezzano S, Egido J, Ortiz A, Liu L, Hu X, Cai GY, Lv Y, Zhuo L, Gao JJ, Cui SY, Feng Z, Fu B, Chen XM, Zaladek Gil F, Costa MC, Hirata AE, Camara NO, Chen JS, Chang LC, Shieh YS, Wu CC, Zhang L, Gu Y, Lin S, Buraczynska M, Zukowski P, Kuczmaszewska A, Ksiazek A, Kimachi M, Ito M, Sato A, Nakagaki T, Nakazawa D, Ishikawa Y, Shibasaki S, Nishio S, Koike T, Ahn EM, Choi JY, Shin JI, Ha TS, Buraczynska M, Zukowski P, Mozul S, Dragan M, Lumi Z, Liu J, Xiufen Z, Jun Q, Changying X, Zitman-Gal T, Green J, Bernheim J, Benchetrit S, Watanabe M, Nakashima H, Abe Y, Ito K, Sato T, Saito T, Riera M, Marquez E, Rigol J, Roca H, Pascual J, Soler MJ, Aizawa K, Hirata M, Moriguchi Y, Iehara N, Terada M, Matsubara T, Araki M, Torikoshi K, Doi T, Fukatsu A. Diabetes - Basic research. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Urakawa H, Nishida Y, Wasa J, Arai E, Zhuo L, Kimata K, Kozawa E, Futamura N, Ishiguro N. Inhibition of hyaluronan synthesis in breast cancer cells by 4-methylumbelliferone suppresses tumorigenicity in vitro and metastatic lesions of bone in vivo. Int J Cancer 2011; 130:454-66. [PMID: 21387290 DOI: 10.1002/ijc.26014] [Citation(s) in RCA: 120] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Revised: 02/01/2011] [Accepted: 02/11/2011] [Indexed: 01/26/2023]
Abstract
Hyaluronan (HA) has been shown to play crucial roles in the tumorigenicity of malignant tumors. Previous studies demonstrated that inhibition of HA suppressed the tumorigenicity of various malignant tumors including breast cancer. 4-methylumbelliferone (MU) has been reported to inhibit HA synthesis in several cell types. However, few studies have focused on the effects of HA inhibition in breast cancer cells by MU, nor the effects on bone metastasis. We hypothesized that MU would suppress the progression of bone metastasis via inhibition of HA synthesis. Here, we investigated the effects of MU on HA expression in MDA-MB-231 breast cancer cell line in addition to their tumorigenicity in vitro and in vivo. HAS2 mRNA expression was downregulated after 6 and 24 hr treatment with MU. Quantitative analysis of HA revealed that MU significantly inhibited the intracellular and cell surface HA. MU significantly inhibited cell growth and induced apoptosis as determined by cell proliferation and TUNEL assays, respectively. Phosphorylation of Akt was suppressed after 12 and 24 hr treatment with MU. MU treatment also inhibited cell motility as well as cell invasiveness. MU also inhibited cell growth and motility in murine fibroblast cell line NIH3T3. In vivo, administration of MU inhibited the expansion of osteolytic lesions on soft X-rays in mouse breast cancer xenograft models. HA accumulation in bone metastatic lesions was perturbed peripherally. These data suggest that MU might be a therapeutic candidate for bone metastasis of breast cancer via suppression of HA synthesis and accumulation.
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Affiliation(s)
- Hiroshi Urakawa
- Department of Orthopedic Surgery, Nagoya University Graduate School and School of Medicine, Showa, Nagoya, Aichi, Japan
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McDonald B, Zhuo L, Kimata K, Kubes P. Activation of TLR4 on endothelium alone initiates neutrophil adhesion within the liver microcirulation during endotoxemia (102.22). The Journal of Immunology 2011. [DOI: 10.4049/jimmunol.186.supp.102.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
During sepsis and endotoxemia, neutrophils are recruited to the liver where they cause tissue damage and vascular dysfunction. We have previously reported that neutrophils adhere within sinusoids of the endotoxemic liver via interactions between neutrophil CD44 and endothelial hyaluronan. In this study, we aimed to characterize the cellular sentinels that detect circulating LPS via TLR4 and the pathways leading to initiation of neutrophil adhesion via CD44-hyaluronan interactions. Intravital microscopy of bone marrow chimeric mice revealed that TLR4 expression by non-bone marrow derived cells was required for neutrophil recruitment into the liver during endotoxemia (1 mg/kg LPS, i.v.). Furthermore, LPS-induced neutrophil adhesion in sinusoids was equivalent between wild-type mice and transgenic mice that express TLR4 only on endothelium (tlr4-/-Tie2tlr4, named endoTLR4), but surprisingly, sinusoidal occlusion (vascular damage) was attenuated in endoTLR4 mice. Intravital immunofluorescence imaging demonstrated that stimulation of endothelial TLR4 induced the deposition of serum-derived hyaluronan associated protein (SHAP) within liver sinsusoids, which was required for activation of endothelial hyaluronan to bind neutrophil CD44. These data reveal that endothelial cells are the key sentinels that recognize circulating LPS and initiate neutrophil adhesion in the liver during endotoxemia, but the development of liver pathology requires TLR4 activation on additional cell types.
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Affiliation(s)
- Braedon McDonald
- 1Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - Lisheng Zhuo
- 2Institute for Molecular Science of Medicine, Aichi Medical University, Aichi, Japan
| | - Koji Kimata
- 2Institute for Molecular Science of Medicine, Aichi Medical University, Aichi, Japan
| | - Paul Kubes
- 1Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
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Zhu L, Zhuo L, Kimata K, Yamaguchi E, Watanabe H, Aronica MA, Hascall VC, Baba K. Deficiency in the serum-derived hyaluronan-associated protein-hyaluronan complex enhances airway hyperresponsiveness in a murine model of asthma. Int Arch Allergy Immunol 2010; 153:223-33. [PMID: 20484920 DOI: 10.1159/000314362] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2009] [Accepted: 01/20/2010] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Serum-derived hyaluronan (HA)-associated proteins (SHAPs), the heavy chains of inter-α-trypsin inhibitor, covalently bind to HA to form the SHAP-HA complex. The SHAP-HA complex is involved in the pathophysiology of inflammatory diseases, including rheumatoid arthritis. We investigated whether this complex is also involved in airway allergy. METHODS SHAP-HA-deficient (bikunin knockout, KO) mice and wild-type (WT) mice were immunized twice by intraperitoneal injection of ovalbumin (OVA) and exposed to aerosol OVA for 30 min each day for 2 weeks. Twenty-four hours after the final OVA challenge, airway responsiveness to inhaled methacholine (MCh) was measured, and analysis of bronchoalveolar lavage fluid (BALF) and lung histological studies were done. RESULTS Compared to WT mice, KO mice showed higher airway hyperresponsiveness to inhaled MCh and higher late-phase responses to OVA whereas the early-phase responses were similar. Cell differentials of BALF showed an increased number of macrophages and neutrophils in KO mice. Furthermore, decreased concentrations of soluble tumor necrosis factor receptor-1 (sTNFR1) were found in BALF from KO mice whereas the levels of Th1 and Th2 cytokines were not different from WT mice. Immunochemical study of the lung tissues revealed stronger staining of sTNFR1 in KO than in WT mice. CONCLUSIONS Our results suggest that in this murine asthma model, the SHAP-HA complex has an inhibitory role in the development of airway hyperresponsiveness and allergic airway inflammation which may be attributed, at least in part, to negative feedback mechanisms exerted by sTNFR1, the shedding of which from the cell surface might also be promoted by the SHAP-HA complex.
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Affiliation(s)
- Long Zhu
- Institute for Molecular Science of Medicine, Aichi Medical University School of Medicine, Yazako, Nagakute, Japan
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Kumar S, Ho G, Zhang Y, Zhuo L. In vivo imaging of retinal gliosis: a platform for diagnosis of PD and Screening of anti-PD compounds. Annu Int Conf IEEE Eng Med Biol Soc 2010; 2010:3049-3052. [PMID: 21095732 DOI: 10.1109/iembs.2010.5626122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Parkinson's disease (PD) is the second most frequent degenerative disorder after Alzheimer's disease. It is characterized by the depletion of mesenchephalic dopaminergic (DA) neurons in the substantia nigra pars compacta (SNpc) and striatal dopamine. Oxidative stress plays a major role in the pathogenesis of Parkinson's disease where DA neurons are especially vulnerable to excessive production of the H2O2 reactive oxygen species. Unfortunately, the first clinical symptoms of PD occur after at least 60-80% of nigro-striatal dopaminergic neurons have lost their function. Therefore, early detection of PD is critical in slowing down the progression of the disease and enabling the development of therapeutic compounds which could intervene at an earlier stage. Here, we employ in vivo molecular imaging of astrocytic retinal gliosis in a transgenic mice to longitudinally monitor the progression of MPTP-induced PD. We have quantitatively evaluated, via this imaging platform, the efficacy of a synthetic antioxidant, 1,3- bisbenzylimidazolium bromide (DBZIM), in protecting the DA neurons and scavenging the ROS. We show here that MPTPinduced PD results in an upregulation of glial fibrillary acidic protein (GFAP), a marker for gliosis, by 36% relative to saline whereas gliosis is normalized in MPTP-induced PD mice treated with DBZIM.
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Affiliation(s)
- S Kumar
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, Singapore 138669.
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Wu H, Xu J, Zhuo L, Han L, Bao W, Rong S, Yao P, Ying C, Liu L. Comparison of risk factors associated with hypertension subtypes by classification tree method in Tongshan County of Jiangsu Province, China. Am J Hypertens 2009; 22:1287-94. [PMID: 19798038 DOI: 10.1038/ajh.2009.189] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND There are only a very limited number of studies relating to risk factors for hypertension in rural populations in China. There are even fewer studies comparing various hypertension subtypes. METHODS A cross-sectional investigation was carried out in a representative sample of 20,390 subjects drawn from among 1,180,000 adult residents of Tongshan County of Jiangsu Province, China. The impact of risk factors including demographic, socioeconomic, dietary, and behavioral, on three hypertension subtypes, namely, isolated systolic hypertension (ISH), isolated diastolic hypertension (IDH), and systolic-diastolic hypertension (SDH), was analyzed by applying statistical tests and a classification tree. RESULTS ISH was the predominant untreated hypertension subtype (13.68 +/- 0.24%) in the adults of Tongshan County, followed by SDH (11.70 +/- 0.23%) and IDH (6.24 +/- 0.17%). Age, number of cigarettes smoked daily, and the types of vitamins taken varied among the ISH, IDH, and SDH classification trees. Low socioeconomic status was associated with an increased risk for ISH and SDH. Light alcohol intake was associated with higher risk for ISH, but with lower risks for IDH and SDH. Light cigarette smoking was associated with higher ISH risk but lower SDH risk. The intake of appropriate amounts of fish, shrimp, or meat lowered the risks for ISH and IDH. The intake of appropriate amounts of seafood, eggs, milk, or fruit lowered the risks for all hypertension subtypes. Interestingly, an excessive preference for sweet or salty foods was associated with a higher risk for all the subtypes. CONCLUSIONS In Tongshan County, there was a considerable prevalence of hypertension of various subtypes, each associated with distinctive and complex risk factors. This suggests that there is a need for testing more diverse prevention measures, tailored to specific subtypes.
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Zhuo L, Kumar S. FP10-MO-03 Molecular imaging of neurotoxicity for compound screening in a GFAP-GFP transgenic mouse model. J Neurol Sci 2009. [DOI: 10.1016/s0022-510x(09)70315-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Garantziotis S, Li Z, Potts EN, Kimata K, Zhuo L, Morgan DL, Savani RC, Noble PW, Foster WM, Schwartz DA, Hollingsworth JW. Hyaluronan mediates ozone-induced airway hyperresponsiveness in mice. J Biol Chem 2009; 284:11309-17. [PMID: 19164299 PMCID: PMC2670136 DOI: 10.1074/jbc.m802400200] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2008] [Revised: 01/06/2009] [Indexed: 11/06/2022] Open
Abstract
Ozone is a common urban environmental air pollutant and significantly contributes to hospitalizations for respiratory illness. The mechanisms, which regulate ozone-induced bronchoconstriction, remain poorly understood. Hyaluronan was recently shown to play a central role in the response to noninfectious lung injury. Therefore, we hypothesized that hyaluronan contributes to airway hyperreactivity (AHR) after exposure to ambient ozone. Using an established model of ozone-induced airways disease, we characterized the role of hyaluronan in airway hyperresponsiveness. The role of hyaluronan in response to ozone was determined by using therapeutic blockade, genetically modified animals, and direct challenge to hyaluronan. Ozone-exposed mice demonstrate enhanced AHR associated with elevated hyaluronan levels in the lavage fluid. Mice deficient in either CD44 (the major receptor for hyaluronan) or inter-alpha-trypsin inhibitor (molecule that facilitates hyaluronan binding) show similar elevations in hyaluronan but are protected from ozone-induced AHR. Mice pretreated with hyaluronan-binding peptide are protected from the development of ozone-induced AHR. Overexpression of hyaluronan enhances the airway response to ozone. Intratracheal instillation of endotoxin-free low molecular weight hyaluronan induces AHR dependent on CD44, whereas instillation of high molecular weight hyaluronan protects against ozone-induced AHR. In conclusion, we demonstrate that hyaluronan mediates ozone-induced AHR, which is dependent on the fragment size and both CD44 and inter-alpha-trypsin inhibitor. These data support the conclusion that pulmonary matrix can contribute to the development of airway hyperresponsiveness.
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Affiliation(s)
- Stavros Garantziotis
- NIEHS, National Institutes of Health, Research Triangle Park, North Carolina 27709, USA
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Adair JE, Stober V, Sobhany M, Zhuo L, Roberts JD, Negishi M, Kimata K, Garantziotis S. Inter-alpha-trypsin inhibitor promotes bronchial epithelial repair after injury through vitronectin binding. J Biol Chem 2009; 284:16922-16930. [PMID: 19395377 DOI: 10.1074/jbc.m808560200] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Pulmonary epithelial injury is central to the pathogenesis of many lung diseases, such as asthma, pulmonary fibrosis, and the acute respiratory distress syndrome. Regulated epithelial repair is crucial for lung homeostasis and prevents scar formation and inflammation that accompany dysregulated healing. The extracellular matrix (ECM) plays an important role in epithelial repair after injury. Vitronectin is a major ECM component that promotes epithelial repair. However, the factors that modify cell-vitronectin interactions after injury and help promote epithelial repair are not well studied. Inter-alpha-trypsin inhibitor (IaI) is an abundant serum protein. IaI heavy chains contain von Willebrand A domains that can bind the arginine-glycine-aspartate domain of vitronectin. We therefore hypothesized that IaI can bind vitronectin and promote vitronectin-induced epithelial repair after injury. We show that IaI binds vitronectin at the arginine-glycine-aspartate site, thereby promoting epithelial adhesion and migration in vitro. Furthermore, we show that IaI-deficient mice have a dysregulated response to epithelial injury in vivo, consisting of decreased proliferation and epithelial metaplasia. We conclude that IaI interacts not only with hyaluronan, as previously reported, but also other ECM components like vitronectin and is an important regulator of cellular repair after injury.
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Affiliation(s)
- Jennifer E Adair
- From the National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709
| | - Vandy Stober
- From the National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709
| | - Mack Sobhany
- From the National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709
| | - Lisheng Zhuo
- Institute for Molecular Science of Medicine, Aichi Medical University, Aichi 480-1195, Japan
| | - John D Roberts
- From the National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709
| | - Masahiko Negishi
- From the National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709
| | - Koji Kimata
- Institute for Molecular Science of Medicine, Aichi Medical University, Aichi 480-1195, Japan
| | - Stavros Garantziotis
- From the National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709.
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Ding Z, Maubach G, Masamune A, Zhuo L. Glial fibrillary acidic protein promoter targets pancreatic stellate cells. Dig Liver Dis 2009; 41:229-36. [PMID: 18602878 DOI: 10.1016/j.dld.2008.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2008] [Revised: 04/25/2008] [Accepted: 05/05/2008] [Indexed: 12/11/2022]
Abstract
BACKGROUND Pancreatic fibrosis is one of the clinical manifestations of chronic pancreatitis and pancreatic cancer. Pancreatic stellate cells (PSCs) have been recognised as principal effector cells in the development of pancreatic fibrosis. The ability to specifically address PSCs might offer a potential for developing a targeted therapy for pancreatic fibrosis. AIM Characterisation of the 2.2kb hGFAP (human glial fibrillary acidic protein) promoter for its usefulness to express reporter genes specifically in PSCs in vitro and in vivo. METHODS 2.2kb hGFAP-LacZ reporter expressions were examined in four immortalised PSC lines and two non-PSCs, meanwhile, GFAP-LacZ transgenic mice were used to detect LacZ reporter in pancreas tissue. Several kinase inhibitors, vitamin A and its metabolites were applied to study the regulation of 2.2kb hGFAP promoter in PSCs. RESULTS Our results showed that the 2.2kb hGFAP promoter is capable of regulating the expression of reporter genes exclusively in immortalised and primary PSCs, as well as in PSCs of transgenic GFAP-LacZ mice. When a PSC cell line transfected with the LacZ reporter (SAM-K/LacZ/C1) was treated with different anti-fibrotic agents and kinase inhibitors, the transgenic beta-galactosidase activity was found to be regulated by multiple signalling pathways known to be involved in the PSC activation. CONCLUSIONS This study provides the proof of concept for using the 2.2kb hGFAP promoter to specifically manipulate PSCs for the development of targeted gene and/or drug therapy in pancreatic fibrosis, and for the screening of anti-fibrotic agents.
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Affiliation(s)
- Z Ding
- Institute of Bioengineering and Nanotechnology, Singapore
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