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Chen M, Zhuang YW, Wu CE, Peng HY, Qian J, Zhou JY. β-asarone suppresses HCT116 colon cancer cell proliferation and liver metastasis in part by activating the innate immune system. Oncol Lett 2021; 21:435. [PMID: 33868473 PMCID: PMC8045167 DOI: 10.3892/ol.2021.12696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 03/11/2021] [Indexed: 11/18/2022] Open
Abstract
Studies have revealed that β-asarone exerts a powerful inhibitory effect on the proliferation of human cancer cells. The authors' previous study demonstrated that β-asarone could induce LoVo colon cancer cell apoptosis in vitro and in vivo, indicating its anticancer properties. The present study aimed to determine the antineoplastic effect of β-asarone in HCT116 colon cancer cells. An in vitro proliferation assay using a real time cell analyzer demonstrated that β-asarone effectively decreased HCT116 cell proliferation in a dose-dependent manner. Bioinformatics analysis revealed that differentially expressed genes following β-asarone inhibition were involved in the ‘cell cycle’, ‘cell division’, ‘cell proliferation’ and ‘apoptosis’. Subsequently, a xenograft assay evidenced the inhibitory effect of β-asarone on the growth of HCT116 tumors in vivo. Further detection of immune-associated cytokines and cells suggested that β-asarone might be involved in the antitumor immune response by stimulating granulocyte-colony stimulating factor and increasing the number of macrophage cells in the spleen. Additionally, a murine model of splenic-transplantation verified the strong suppressive role of β-asarone in colon cancer liver metastasis in vivo. Taken together, the results of the current study revealed that β-asarone decreased HCT116 colon cancer cell proliferation and liver metastasis potentially by activating the innate immune system, supporting the multi-system regulation theory and providing a basis for further mechanistic studies on colon cancer.
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Affiliation(s)
- Min Chen
- General Internal Medicine Department, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
| | - Yu-Wen Zhuang
- Traditional Chinese Medicine Department, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu 210002, P.R. China.,Oncology Department, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
| | - Cun-En Wu
- Oncology Department, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
| | - Hai-Yan Peng
- Oncology Department, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
| | - Jun Qian
- Oncology Department, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
| | - Jin-Yong Zhou
- Central Laboratory, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
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Wu CE, Xue WW, Zhuang YW, Ding DW, Zhou JY, Liu SL, Wang RP, Shu P. A clinical study on the efficacy of Yiqi Huayu Jiedu decoction for reducing the risk of postoperative recurrence and metastasis of gastric cancer: Protocol for a multicenter, randomized, double-blind, placebo-controlled trial. Medicine (Baltimore) 2020; 99:e23417. [PMID: 33235121 PMCID: PMC7710168 DOI: 10.1097/md.0000000000023417] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Gastric cancer (GC) is one of the top 10 malignant tumors worldwide and poses a great threat to human life and health, the prevention and treatment of which has become the focus and difficulty of medical research. With its unique advantages, traditional Chinese medicine (TCM) is widely used in the prevention and treatment of postoperative recurrence and metastasis of GC as well as the improvement of patients' quality of life. The aim of this study is to elucidate the curative effect and the underlying mechanism of Yiqi Huayu Jiedu (YQHYJD) decoction. METHODS/DESIGN This is a prospective, multicenter, randomized controlled trial continuing 3 years. Two hundred ninety-eight eligible patients will be randomly divided into 2 groups, the chemotherapy combined with placebo and the chemotherapy combined with YQHYJD group at a ratio of 1:1. All patients will receive the treatment for 6 months and follow up for 3 years. The primary outcomes are disease-free survival, and 1-year, 2-year, 3-year progression-free survival rate, while the secondary outcomes are tumor makers, TCM syndrome score, quality of life score, overall chemotherapy completion rate, intestinal flora diversity test, immune function (T, B lymphocyte subsets and NK cells) test. The Security index includes blood, urine and stool routine, electrocardiogram, liver function (ALT), and renal function (BUN, Scr). All of these outcomes will be analyzed at the end of the trial. DISCUSSION This research will provide the valuable evidence for the efficacy and safety of Yiqi Huayu Jiedu decoction in postoperative GC. Furthermore, it will be helpful to form a higher level of evidence-based medical basis for TCM in the treatment of GC recurrence and metastasis. TRIAL REGISTRATION ChiCTR2000039038.
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Affiliation(s)
- Cun-En Wu
- Department of Oncology, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine
| | - Wei-Wei Xue
- Department of Oncology, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine
| | - Yu-Wen Zhuang
- Department of Oncology, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine
- Traditional Chinese Medicine Department, Jinling Hospital, School of Medicine, Nanjing University
| | - Da-Wei Ding
- Department of Oncology, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine
| | - Jin-Yong Zhou
- Central Laboratory, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, China
| | - Shen-Lin Liu
- Department of Oncology, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine
| | - Rui-Ping Wang
- Department of Oncology, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine
| | - Peng Shu
- Department of Oncology, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine
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Wu CE, Zhuang YW, Zhou JY, Liu SL, Zou X, Wu J, Wang RP, Shu P. Nm23-H1 inhibits hypoxia induced epithelial-mesenchymal transition and stemness in non-small cell lung cancer cells. Biol Chem 2020; 400:765-776. [PMID: 30763256 DOI: 10.1515/hsz-2018-0351] [Citation(s) in RCA: 7] [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: 08/20/2018] [Accepted: 01/09/2019] [Indexed: 12/30/2022]
Abstract
The Nm23 gene has been acknowledged to play a crucial role in lung cancer metastasis inhibitory cascades controlled by multiple factors. Low expression or allelic deletion of nm23-H1 is strongly linked to widespread metastasis and poor differentiation of non-small cell lung cancer (NSCLC). In this study, nm23-H1 was down regulated in epithelial-mesenchymal transition (EMT) and stemness enhancement under cobalt chloride (CoCl2)-induced hypoxia in NSCLC cells. Moreover, knocking down of nm23-H1 by shRNA apparently promoted hypoxia induced EMT and stemness, which was entirely suppressed via over expression of nm23-H1. Mechanistically, the Wnt/β-catenin signaling pathway was found to participate in the nm23-H1-mediated process. Besides, XAV939 prohibited cell EMT and stemness which could be impaired by knocking down of nm23-H1, while stable transfection of nm23-H1 attenuated hypoxia phonotype induced by lithium chloride (LiCl). Generally, our experiment provided evidence that nm23-H1 can reverse hypoxia induced EMT and stemness through the inhibition of the Wnt/β-catenin pathway, which may furnish a deeper perspective into the better treatment or prognosis for NSCLC.
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Affiliation(s)
- Cun-En Wu
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu, China
| | - Yu-Wen Zhuang
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu, China.,Department of Integrated Traditional and Western Medicine, Jinling Hospital, School of Medicine, Nanjing University, Nanjing 210002, Jiangsu, China.,The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu, China
| | - Jin-Yong Zhou
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu, China
| | - Shen-Lin Liu
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu, China
| | - Xi Zou
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu, China
| | - Jian Wu
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu, China
| | - Rui-Ping Wang
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu, China
| | - Peng Shu
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu, China
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Wu CE, Zhuang YW, Zhou JY, Liu SL, Wang RP, Shu P. Cinnamaldehyde enhances apoptotic effect of oxaliplatin and reverses epithelial-mesenchymal transition and stemnness in hypoxic colorectal cancer cells. Exp Cell Res 2019; 383:111500. [PMID: 31306656 DOI: 10.1016/j.yexcr.2019.111500] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 07/09/2019] [Accepted: 07/11/2019] [Indexed: 11/27/2022]
Abstract
Oxaliplatin has been widely applied in clinical tumor chemotherapy, the treatment failure of which mainly blames on low susceptibility resulted from intrinsic or acquired drug resistance in tumor cells. Microenvironmental hypoxia is one of the important pathological features of solid tumors, which is closely related to the radiochemotherapy tolerance and poor prognosis. Cinnamaldehyde is extracted from Cinnamomum cassia with inhibiting effect against kinds of tumors. In this study, we demonstrated that hypoxia reduced the sensitivity to oxaliplatin in colorectal cancer (CRC) cells via inducing EMT and stemness. Nonetheless, cinnamaldehyde increased the curative effect of oxaliplatin by promoting apoptosis both in vitro and in vivo. Mechanistically, cinnamaldehyde and oxaliplatin synergistically reversed hypoxia-induced EMT and stemness of CRC cells and suppressed hypoxia-activated Wnt/β-catenin pathway synergistically. These consequences uncovered the potential therapeutic value of cinnamaldehyde and provided novel ideas on improving the sensitivity of oxaliplatin in CRC therapy.
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Affiliation(s)
- Cun-En Wu
- Department of Oncology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China
| | - Yu-Wen Zhuang
- Department of Oncology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China; Jinling Hospital Department of Integrated Traditional and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210002, Jiangsu, China; The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, 210023, Jiangsu, China
| | - Jin-Yong Zhou
- Department of Oncology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China
| | - Shen-Lin Liu
- Department of Oncology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China
| | - Rui-Ping Wang
- Department of Oncology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China.
| | - Peng Shu
- Department of Oncology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China.
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5
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Zhou JY, Chen M, Wu CE, Zhuang YW, Chen YG, Liu SL. The modified Si-Jun-Zi Decoction attenuates colon cancer liver metastasis by increasing macrophage cells. Altern Ther Health Med 2019; 19:86. [PMID: 31014289 PMCID: PMC6477719 DOI: 10.1186/s12906-019-2498-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 04/11/2019] [Indexed: 01/20/2023]
Abstract
BACKGROUND The modified Si-Jun-Zi Decoction (SJZ), a Chinese medicine formula, is clinically used against multiple malignancies including colorectal cancer (CRC). This study aims to evaluate the effect of modified SJZ on CRC liver metastasis and identify the therapeutic mechanisms. METHODS Human CRC cells with GFP fluorescence were transplanted into Balb/c nude mice spleens. Modified SJZ, 5-fluorouracil or the combined treatment was given for 3 weeks. CRC liver metastasis was measured by fluorescence imaging and plasma cytokines were analyzed. Furthermore, the effects of administration time and doses for the modified SJZ were investigated in nude mice. RESULTS Modified SJZ could increase the survival rate and reduce CRC liver metastasis in the nude mice model. Plasma GM-CSF level was elevated. Three weeks of treatment with the modified SJZ at the full dose (45 g/kg) could significantly increase the number of macrophages but not neutrophils in the spleen. CONCLUSIONS These results indicate that modified SJZ can inhibit CRC liver metastasis by activating the innate immune system, providing a complementary and alternative therapy for CRC.
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Zhuang YW, Wu CE, Zhou JY, Zhao ZM, Liu CL, Shen JY, Cai H, Liu SL. Solasodine reverses stemness and epithelial-mesenchymal transition in human colorectal cancer. Biochem Biophys Res Commun 2018; 505:485-491. [PMID: 30268504 DOI: 10.1016/j.bbrc.2018.09.094] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 09/10/2018] [Accepted: 09/14/2018] [Indexed: 12/12/2022]
Abstract
Adverse side effects of conventional chemotherapy, acquired resistance and fatal tumor metastasis of human colorectal cancer (CRC) are propelling the exploration for novel selective anticarcinogens. Solasodine is a main active component isolated from Solanum incanum L that exhibited a potent stemness and invasion inhibitory effect on human colorectal cancer HCT116 cells. Colony Spheroid formation assay showed that solasodine dose-dependently prohibited HCT116 cell stemness. CD133, CD44, Nanog, Oct-4 and Sox-2 were inhibited by solasodine to reverse stemness and similar mechanism was stimulated in vivo. Transwell and scratch wound assays revealed that solasodine impeded HCT116 cell invasion and migration potential strengthened by TGF-β1. Moreover, solasodine attenuated TGF-β1-induced EMT and decreased MMPs while in vivo study showed the same trend. The results of this study implied that solasodine may be a novel therapeutic drug for CRC treatment.
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Affiliation(s)
- Yu-Wen Zhuang
- The Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of TCM, Nanjing, China; The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China; Department of Integrated Traditional and Western Medicine, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Cun-En Wu
- The Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of TCM, Nanjing, China
| | - Jin-Yong Zhou
- The Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of TCM, Nanjing, China
| | - Zhi-Ming Zhao
- Department of Integrated Traditional and Western Medicine, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Chun-Li Liu
- Department of Integrated Traditional and Western Medicine, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Jun-Yi Shen
- Department of Integrated Traditional and Western Medicine, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Hui Cai
- Department of Integrated Traditional and Western Medicine, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China.
| | - Shen-Lin Liu
- The Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of TCM, Nanjing, China.
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Zhuang YW, Wu CE, Zhou JY, Chen X, Wu J, Jiang S, Peng HY, Zou X, Liu JY, Wu DP, Gong T, Qi MH, Xue T, Liu SL, Cai H. Solasodine inhibits human colorectal cancer cells through suppression of the AKT/glycogen synthase kinase-3β/β-catenin pathway. Cancer Sci 2017; 108:2248-2264. [PMID: 28803443 PMCID: PMC5666038 DOI: 10.1111/cas.13354] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 08/08/2017] [Accepted: 08/09/2017] [Indexed: 02/06/2023] Open
Abstract
Solasodine is a main active component isolated from Solanum incanum L. that performs a wide range of functions containing anti‐oxidant, anti‐infection, and neurogenesis promotion. In this study, we explored the influence of solasodine on three types of human colorectal cancer (CRC) cell lines. The results show that solasodine prohibited CRC cell proliferation dose‐ and time‐dependently and impeded CRC cell motility by downregulating MMPs. Solasodine was also found to fuel caspase‐cascade reaction and increase the ratio between Bax and Bcl‐2 so as to induce CRC cell apoptosis. When cells were pretreated with AKT activator (insulin‐like growth factor‐1) followed by solasodine, the solasodine‐induced apoptosis was partially abrogated by insulin‐like growth factor‐1. Moreover, solasodine hindered tumor development and stimulated similar mechanisms in vivo. In general, our study provides the first evidence that solasodine has a suppressive effect on CRC cells and that this agent may be a novel therapeutic drug for CRC treatment.
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Affiliation(s)
- Yu-Wen Zhuang
- Department of Integrated Traditional and Western Medicine, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China.,The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Province Hospital of TCM, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, china
| | - Cun-En Wu
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Province Hospital of TCM, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, china
| | - Jin-Yong Zhou
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Province Hospital of TCM, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, china
| | - Xu Chen
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Province Hospital of TCM, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, china
| | - Jian Wu
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Province Hospital of TCM, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, china
| | - Shan Jiang
- Division of Membrane Dynamics, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hai-Yan Peng
- The First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Province Hospital of TCM, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, china
| | - Xi Zou
- Jiangsu Province Hospital of TCM, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, china
| | - Jia-Yun Liu
- Jiangsu Province Hospital of TCM, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, china
| | - Da-Peng Wu
- Jiangsu Province Hospital of TCM, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, china
| | - Tao Gong
- Nanjing Hospital of Traditional Chinese Medicine, Nanjing, China
| | - Ming-Hao Qi
- Jiangsu Province Hospital of TCM, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, china
| | - Tian Xue
- Jiangsu Province Hospital of TCM, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, china
| | - Shen-Lin Liu
- Jiangsu Province Hospital of TCM, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, china
| | - Hui Cai
- Department of Integrated Traditional and Western Medicine, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
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Shen SX, Wang HB, Chen ZW, Shen YE, Fu H, Wu CE, Ye TT, Wang JJ, Wang KA, Li TL, Yang Z, LaPorte RE, Dorman JS. The incidence of insulin-dependent diabetes mellitus in urban districts of Shanghai (1989-1993). J Pediatr Endocrinol Metab 1996; 9:469-73. [PMID: 8910816 DOI: 10.1515/jpem.1996.9.4.469] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A retrospective study on the incidence of insulin-dependent diabetes mellitus (IDDM) among children aged 0-14 years was carried out from 1989-1993 in urban Shanghai, China. The average annual population at risk (0-14 yr) consisted of 1,401,664 children. All the cases were collected from the hospitals (primary source) and from primary and middle schools and kindergartens (second source) with independent validation of case ascertainment. There were 53 IDDM cases from the primary source, 23 from the secondary source, with a total of 58. The ascertainment corrected total number of IDDM cases was 67 by the capture-recapture method. The average crude annual incidence rate was 0.83 [95% confidence interval (CI) 0.61-1.04] and ascertainment corrected incidence rate 0.96 (95% CI 0.80-1.12) per 100,000. Peak incidence fell in 1992 and in the 9 year-old group. The incidence of childhood IDDM in the urban districts of Shanghai was reconfirmed to be the lowest in the world but by comparing the results of former investigations a trend was found of increasing incidence of IDDM.
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Affiliation(s)
- S X Shen
- Children's Hospital, Shanghai Medical University, China
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Abstract
To confirm the main etiological antigen of farmer's lung in Dafeng County, Jiangsu Province, People's Republic of China, precipitins in serum from 30 patients with farmer's lung were tested with several strains of antigens. Reactions against two strains of T.vulgaris were shown in 46.7% and 66.7% of the patients group, which were significantly higher than in the controls, while the percentage of reactions against Faenia rectivirgula and A. fumigates were low in the patients group and had no significant difference with the controls. The results indicate that the main etiological agents were some strains of T. vulgaris. This finding was consistent with the microbiological study of sputum of the patients and moldy hay samples from the working area.
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Affiliation(s)
- Y Shen
- School of Public Health, Shanghai Medical University, People's Republic of China
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