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Yang W, Qian C, Luo J, Chen C, Feng Y, Dai N, Li X, Xiao H, Yang Y, Li M, Li C, Wang D. Efficacy and Safety of Preoperative Transcatheter Rectal Arterial Chemoembolisation in Patients with Locally Advanced Rectal Cancer: Results from a Prospective, Phase II PCAR Trial. Clin Oncol (R Coll Radiol) 2024; 36:233-242. [PMID: 38342657 DOI: 10.1016/j.clon.2024.01.015] [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: 08/26/2023] [Revised: 11/22/2023] [Accepted: 01/24/2024] [Indexed: 02/13/2024]
Abstract
AIMS The PCAR study aimed to assess the efficacy and safety of preoperative transcatheter rectal arterial chemoembolisation (TRACE) in patients with locally advanced rectal cancer (LARC). MATERIALS AND METHODS This was a single-centre, prospective, phase II trial conducted in China. Eligible patients were adults aged 18 years and older with histologically confirmed stage II or III rectal carcinoma and an Eastern Cooperative Oncology Group performance status of 0-1. Patients received TRACE with oxaliplatin, followed by radiotherapy with a cumulative dose of 45 Gy (1.8 Gy/time/day, five times a week for 5 weeks) and received oral S1 capsules twice daily (7 days a week for 4 weeks). Patients underwent total mesorectal excision 4-8 weeks after the completion of chemoradiotherapy, followed by mFOLFOX6 or CAPOX regimens for 4-6 months. The hypothesis of this study was that adding TRACE to preoperative neoadjuvant chemoradiotherapy would improve tumour regression and prognosis. The primary end point was the pathological complete response rate; secondary end points included the major pathological response rate, anal preservation rate, 5-year disease-free survival (DFS), 5-year overall survival and treatment-related adverse events. RESULTS In total, 111 LARC patients received TRACE and subsequent scheduled treatment plans. The pathological complete response and major pathological response rates were 20.72% and 48.65%, respectively. The 5-year DFS and 5-year overall survival were 61.89% (95% confidence interval 51.45-74.45) and 74.80% (95% confidence interval 65.05-86.01), respectively. Grade 3-4 toxicities were reported in 29 patients (26.13%). The postoperative complication rate was 21.62%, without serious surgical complications. Multivariate Cox regression analysis showed that ypN stage (hazard ratio = 4.242, 95% confidence interval 2.101-8.564, P = 0.00017) and perineural invasion (hazard ratio = 2.319, 95% confidence interval 1.058-5.084, P = 0.0487) were independent risk factors associated with DFS, whereas ypN stage (hazard ratio = 3.164, 95% confidence interval 1.347-7.432, P = 0.0101), perineural invasion (hazard ratio = 4.118, 95% confidence interval 1.664-10.188, P = 0.0134) and serum carbohydrate antigen 199 (CA199; hazard ratio = 4.142, 95% confidence interval 1.290-13.306, P = 0.0344) were independent predictors for overall survival. CONCLUSION The current study provides evidence that adding TRACE to neoadjuvant chemoradiotherapy can improve the pathological remission rate in LARC patients with acceptable toxicity. Given its promising effectiveness and safe profile, incorporating TRACE into the standard treatment strategy for patients with LARC should be considered.
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Affiliation(s)
- W Yang
- Cancer Center, Daping Hospital, Army Medical University, Chongqing, China
| | - C Qian
- Cancer Center, Daping Hospital, Army Medical University, Chongqing, China
| | - J Luo
- Cancer Center, Daping Hospital, Army Medical University, Chongqing, China
| | - C Chen
- Cancer Center, Daping Hospital, Army Medical University, Chongqing, China
| | - Y Feng
- Cancer Center, Daping Hospital, Army Medical University, Chongqing, China
| | - N Dai
- Cancer Center, Daping Hospital, Army Medical University, Chongqing, China
| | - X Li
- Cancer Center, Daping Hospital, Army Medical University, Chongqing, China
| | - H Xiao
- Cancer Center, Daping Hospital, Army Medical University, Chongqing, China
| | - Y Yang
- Cancer Center, Daping Hospital, Army Medical University, Chongqing, China
| | - M Li
- Cancer Center, Daping Hospital, Army Medical University, Chongqing, China
| | - C Li
- Department of General Surgery, Colorectal Division, Daping Hospital, Army Medical University, Chongqing, China
| | - D Wang
- Cancer Center, Daping Hospital, Army Medical University, Chongqing, China.
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Dai N, Li J, Ren L. Representation of Women on Editorial Boards of Quartile 2 Oncology Journals. Clin Oncol (R Coll Radiol) 2023; 35:e344-e346. [PMID: 36882360 DOI: 10.1016/j.clon.2023.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 01/28/2023] [Accepted: 02/20/2023] [Indexed: 03/08/2023]
Affiliation(s)
- N Dai
- Editorial Department of Chinese Journal of Cancer Research, Peking University Cancer Hospital & Institute, Beijing, China; Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing, China.
| | - J Li
- Editorial Department of Chinese Journal of Cancer Research, Peking University Cancer Hospital & Institute, Beijing, China; Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing, China
| | - L Ren
- Editorial Department of Chinese Journal of Cancer Research, Peking University Cancer Hospital & Institute, Beijing, China; Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing, China
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Dai N, Li J, Ren L, Bu Z. Gender representation on editorial boards of leading oncology journals. ESMO Open 2022; 7:100590. [PMID: 36174363 PMCID: PMC9588884 DOI: 10.1016/j.esmoop.2022.100590] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/29/2022] [Accepted: 08/02/2022] [Indexed: 11/23/2022] Open
Abstract
Background There has historically been women underrepresentation on editorial boards of peer-reviewed medical journals. High-ranked oncology journals showcase cancer-related scientific work at the forefront of the discipline. There is urgent need to investigate gender representation on editorial boards at leading oncology journals. Materials and methods Sixty high-ranked oncology journals based on impact factor calculated by the Journal Citation Reports (JCR) 2021 from Web of Science/Clarivate Analytics were identified. Gender-related information of editorial boards was obtained from each journal’s website. The gender of each member of the editorial team was confirmed by an internet search for picture and/or gender-specific pronoun from journal or personal profile. Fisher’s exact tests and analysis of variance were used to analyze categorical and continuous variables, respectively. Significance was set at P < 0.05. Results Among 4898 members on editorial boards of top oncology journals with the highest impact factor, 1177 were women. Women made up 24% (1177 of 4898) of members on editorial boards in top oncology journals, and there was significantly less women board members than men (P < 0.0001). The mean female composition of editorial boards of oncology journals was 27% (range from 4% to 100%). Among 71 editors-in-chief of the top oncology journals, 14 (20%) were women. There was a positive correlation between the presence of women in journal editorial leadership and the percentage of women on editorial boards (rs = 0.340, P = 0.008). The underrepresentation of women on oncology journal editorial boards was significantly different among quartiles of journal impact factor. There was no significant correlation between women’s representation on journal editorial boards (%) and journal impact factors (rs = 0.226, P = 0.086). Conclusions The results demonstrated that there are gender disparities among editorial leadership at high-impact oncology journals. There are cultural and structural barriers and prejudices to gender parity and diversity on editorial boards of oncology journals. The representation of women on editorial boards of oncology journals has not been verified. This large-scale study found that women comprised only 24% of editorial boards of top-ranked oncology journals. The results demonstrated that there are gender disparities among editorial leadership at leading oncology journals.
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Affiliation(s)
- N Dai
- Editorial Department of Chinese Journal of Cancer Research, Peking University Cancer Hospital & Institute, Beijing, China; Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing, China.
| | - J Li
- Editorial Department of Chinese Journal of Cancer Research, Peking University Cancer Hospital & Institute, Beijing, China; Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing, China
| | - L Ren
- Editorial Department of Chinese Journal of Cancer Research, Peking University Cancer Hospital & Institute, Beijing, China; Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing, China
| | - Z Bu
- Editorial Department of Chinese Journal of Cancer Research, Peking University Cancer Hospital & Institute, Beijing, China; Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Beijing, China; Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing, China
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Qiu ZP, Lin L, Dai N, Li JJ, Chi Q, Liu QH, Zhu J, Zhang HH. Flavonoid extract of hawthorn (Crataegus oxyacantha L.) fruit alleviates oxidative stress, inflammation and vascular dysfunction in L-NAME-induced hypertensive rats. J BIOL REG HOMEOS AG 2021; 34:2271-2276. [PMID: 33198447 DOI: 10.23812/20-111-l] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Z P Qiu
- Department of Emergency, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, China
| | - L Lin
- Department of Health Examination, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, China
| | - N Dai
- Department of General Medicine, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, China
| | - J J Li
- Department of Urology, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, China
| | - Q Chi
- Department of Urology, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, China
| | - Q H Liu
- Department of Urology, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, China
| | - J Zhu
- Department of Urology, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, China
| | - H H Zhang
- Department of Emergency, Affiliated Qingdao Hiser Hospital of Qingdao University, Qingdao, China
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Wang J, Dai N, Cheng DH, Gao JY, Zheng JQ, Liu ZG. STAT3 gene polymorphism in chronic obstructive pulmonary disease. Eur Rev Med Pharmacol Sci 2020; 24:9618-9625. [PMID: 33015805 DOI: 10.26355/eurrev_202009_23050] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to explore the correlation between rs8069115, rs41289087, and rs11079042 polymorphisms of the signal transducer and activator of transcription 3 (STAT3) gene and chronic obstructive pulmonary disease (COPD). PATIENTS AND METHODS A total of 200 patients diagnosed with COPD were enrolled in the disease group. Meanwhile, 200 normal subjects were selected as the control group. Peripheral blood was collected from subjects in the disease group and control group. Subsequently, nucleated cells were isolated for determination of STAT3 gene polymorphisms. Quantitative Polymerase Chain Reaction (qPCR) was utilized to detect the expression level of STAT3. Samples from 12 patients with differences in STAT3 haplotypes and 12 cases with no difference were collected and treated with transcriptome sequencing to analyze pathways enriched with differentially expressed genes. RESULTS There were statistically significant differences in allele distributions at rs8069115 between the disease group and control group (p=0.000), and the allele frequency of G was higher in disease group. Genotype distributions of rs8069115 (p=0.000) and rs41289087 (p=0.000) of the STAT3 gene in disease group were significantly different in comparison with the control group. The frequency of rs8069115 GG genotype was remarkably higher, while the frequency of rs41289087 TG genotype was lower in the disease group (p<0.05). In addition, compared with the control group, the distributions of the dominant model (p=0.002) and recessive model (p=0.004) of rs8069115 of the STAT3 gene were markedly different in the disease group. A significantly higher frequency of dominant model GG+GA and lower frequency of recessive model GA+AA were observed at rs8069115 in the disease group (p<0.05). Moreover, the haplotype distributions of AGC (p=0.002), ATC (p=0.001), GTA (p=0.010), and GTC (p=0.035) at rs8069115, rs41289087, and rs11079042 were different between the disease group and control group. Besides, rs8069115 locus and rs11079042 locus were linked to each other (D'=0.523). There was a remarkable association between rs11079042 polymorphism of the STAT3 gene and gene expression (p<0.05). STAT3 was highly expressed in patients with genotype CC (p<0.05). Furthermore, changes in transcriptome levels among different haplotype populations (haplotype with different distributions vs. haplotype with no difference in distribution) were analyzed. The results demonstrated that multiple pathways, such as ECM-receptor interactions, cell cycle checkpoints, and protein processing were notably enriched (p<0.05). CONCLUSIONS According to our results, we confirmed that the polymorphisms (rs8069115, rs41289087, and rs11079042) of STAT3 gene are noticeably correlated with the occurrence and progression of COPD.
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Affiliation(s)
- J Wang
- Department of Pediatrics, Jinan Maternity and Child Care Hospital, Jinan, China.
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Long Y, Du L, Kim JJ, Chen B, Zhu Y, Zhang Y, Yao S, He H, Zheng X, Huang Z, Dai N. MLCK-mediated intestinal permeability promotes immune activation and visceral hypersensitivity in PI-IBS mice. Neurogastroenterol Motil 2018; 30:e13348. [PMID: 29644768 DOI: 10.1111/nmo.13348] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 09/19/2017] [Accepted: 03/08/2018] [Indexed: 02/05/2023]
Abstract
BACKGROUND Alterations in intestinal permeability regulated by tight junctions (TJs) are associated with immune activation and visceral hypersensitivity in irritable bowel syndrome (IBS). Myosin light chain kinase (MLCK) is an important mediator of epithelial TJ. The aim of this study is to investigate the role of MLCK in the pathogenesis of IBS using a post infectious IBS (PI-IBS) mouse model. METHODS Trichinella spiralis-infected PI-IBS mouse model was used. Urine lactulose/mannitol ratio was measured to assess intestinal epithelial permeability. Western blotting was used to evaluate intestinal TJ protein (zonula occludens-1) and MLCK-associated protein expressions. Immune profile was assessed by measuring Th (T helper) 1/Th2 cytokine expression. Visceral sensitivity was determined by abdominal withdrawal reflex in response to colorectal distension. RESULTS Eight weeks after inoculation with T. spiralis, PI-IBS mice developed decreased pain and volume thresholds during colorectal distention, increased urine lactulose/mannitol ratio, elevated colonic Th1/Th2 cytokine ratio, and decreased zonula occludens-1 expression compared to the control mice. MLCK expression was dramatically elevated in the colonic mucosa of PI-IBS mice compared to the control mice, alongside increased pMLC/MLC and decreased MLCP expression. Administration of MLCK inhibitor and TJ blocker both reversed the increased intestinal permeability, visceral hypersensitivity, and Th1-dominant immune profile in PI-IBS mice. CONCLUSION MLCK is a pivotal step in inducing increased intestinal permeability promoting low-grade intestinal immune activation and visceral hypersensitivity in PI-IBS mice. MLCK inhibitor may provide a potential therapeutic option in the treatment of IBS.
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Affiliation(s)
- Y Long
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - L Du
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - J J Kim
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China.,Division of Gastroenterology, Loma Linda University Medical Center, Loma Linda, CA, USA
| | - B Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - Y Zhu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - Y Zhang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - S Yao
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - H He
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - X Zheng
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - Z Huang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - N Dai
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
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Ji ZQ, Yang JH, Zhong WT, Zhang Y, Fan ZH, Hu YN, Dai N, Liu T, Zhang F, Shen YX. Grafting Olfactory Ensheathing Cells with Stereo Silk Nanofibers Scaffolds: A Novel Therapy for Spinal Cord Injury in Rats. J BIOMATER TISS ENG 2018. [DOI: 10.1166/jbt.2018.1860] [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: 11/23/2022]
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Du L, Chen B, Kim JJ, Chen X, Dai N. Micro-inflammation in functional dyspepsia: A systematic review and meta-analysis. Neurogastroenterol Motil 2018; 30:e13304. [PMID: 29392796 DOI: 10.1111/nmo.13304] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [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: 08/25/2017] [Accepted: 01/08/2018] [Indexed: 12/13/2022]
Abstract
Functional dyspepsia (FD) is a gastrointestinal disorder of unknown etiology. Although micro-inflammation appears to be important in the pathogenesis, studies evaluating immune activation in FD have been inconsistent. A systematic review of literature and meta-analysis was performed to compare immunologic cell counts and cytokine levels in the mucosa and peripheral blood of individuals with FD and healthy controls. PubMed, Embase, and the Cochrane library were searched. Data on immunologic cell counts and cytokines levels among individuals with FD and control groups were extracted and compared by calculating standard mean differences (SMD). Thirty-seven studies met the inclusion criteria. Mast cell (SMD = 0.94, 95%CI 0.26-1.62, P = .007) and eosinophil counts (SMD = 0.36, 95%CI 0.06-0.68, P = .03) in the stomach were increased, among individuals with FD compared to controls. Similarly, mast cell (SMD = 0.66, 95%CI 0.20-1.13, P = 0.005) and eosinophil (SMD = 0.95, 95%CI 0.66-1.24; P < .001) counts in the duodenum were also increased in those with FD compared to controls. In a subgroup analysis, elevated eosinophil counts in the duodenum were observed in both post-prandial distress syndrome (SMD = 0.97, 95%CI 0.46-1.47, P = .0002) and epigastric pain syndrome subtypes (SMD = 1.16, 95%CI 0.48-1.83, P = .0008). No differences in mucosal intraepithelial lymphocyte, enterochromaffin cell, and neutrophil counts, as well as, peripheral interlukin-6 (IL-6) and IL-10 levels were observed among individuals with FD and controls. Micro-inflammation in the form of local immune cell infiltration, particularly eosinophils and mast cells, characterizes the pathogenesis of FD.
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Affiliation(s)
- L Du
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - B Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - J J Kim
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,Division of Gastroenterology, Loma Linda University Medical Center, Loma Linda, CA, USA
| | - X Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - N Dai
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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Liu Y, Dai N, Huang Q, Jiang ZN. [Collagenous sprue: report of a case]. Zhonghua Bing Li Xue Za Zhi 2017; 46:128-129. [PMID: 28173680 DOI: 10.3760/cma.j.issn.0529-5807.2017.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Long Y, Huang Z, Deng Y, Chu H, Zheng X, Yang J, Zhu Y, Fried M, Fox M, Dai N. Prevalence and risk factors for functional bowel disorders in South China: a population based study using the Rome III criteria. Neurogastroenterol Motil 2017; 29. [PMID: 27412422 DOI: 10.1111/nmo.12897] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [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: 02/08/2016] [Accepted: 06/05/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND Functional bowel disorders (FBDs) such as irritable bowel syndrome (IBS) impact on quality of life and health care resources. It is uncertain whether patients with functional digestive symptoms have similar characteristics in different populations. This population-based study assessed the prevalence and identified risk factors for these disorders in South-East China. METHODS Five communities were selected at random and invitations distributed to a representative sample (block randomization). Questionnaires were completely supervised by investigators. Demographic and medical data with FBD symptoms (Rome III criteria), psychological condition, life event stress, and quality of life were collected. KEY RESULTS Functional bowel disorder prevalence was 41.6% in 1999/2115 (94.5%) completed questionnaires: 9.9% functional constipation (FC), 6.8% bloating (FB), 6.5% diarrhea (FD), 5.9% IBS (IBS-D 47.1%, IBS-M 23.9%, IBS-C 12.8%, IBS-U 16.2%), and 12.6% unspecified. Similar numbers of men and women had FBDs or IBS (overall; 51.3% male vs 48.7% female, P=.796); however, there was female predominance in FC (62.1%, P<.001) and FB (58.5%, P=.038). FBDs were associated with greater anxiety, depression, life event stress, and a lower quality of life compared with those without symptoms (all, P<.0001). Logistic regression identified medical co-morbidity, anxiety/depression, and life event stress as independent risk factors for these disorders. CONCLUSIONS & INFERENCES Functional bowel disorders are as common in South China as in western populations. A similar number of men and women report FBDs and IBS. Only FC and FB are more prevalent in females. Independent risk factors associated with FBDs included physical and psychosocial stressors.
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Affiliation(s)
- Y Long
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - Z Huang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - Y Deng
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - H Chu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - X Zheng
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - J Yang
- Department of Gastroenterology, The First People's Hospital of Hangzhou, Hangzhou, Zhejiang Province, China
| | - Y Zhu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
| | - M Fried
- Division of Gastroenterology & Hepatology, University Hospital Zürich, Zürich, Switzerland
| | - M Fox
- Division of Gastroenterology & Hepatology, University Hospital Zürich, Zürich, Switzerland.,Abdominal Center: Gastroenterology, St. Claraspital, Basel, Switzerland
| | - N Dai
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
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Xiang XL, Wang A, Tu L, Ke MY, Yang YS, Jiang B, Lin L, Dai N, Zhang SS, Tao L, Xu H, Liang XM, Fang XC, Xia ZW, Wang X, Wu JN, Wang MF, Zhang HJ, Fang YF, Shen C, Wang J, Peng LH, Li WY, Wang ZF, Wang K, Liu N, Hou XH. The motility of esophageal sphincters during liquid and solid bolus swallows: a multicenter normative value study of high-resolution manometry in China. Neurogastroenterol Motil 2017; 29. [PMID: 27665746 DOI: 10.1111/nmo.12914] [Citation(s) in RCA: 14] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 07/05/2016] [Indexed: 01/31/2023]
Abstract
BACKGROUND It is gradually accepted that solid bolus swallow needs to be added to the procedure of manometry. The motility differences in the upper esophageal sphincter (UES) and lower esophageal sphincter (LES) were not well described. Sierra Scientific Instruments solid-state high-resolution manometry (HRM) system, the most popular HRM system in China, lacks the Chinese normative values for both liquid and solid bolus swallow parameters. METHODS The esophageal HRM data of 88 healthy volunteers were analyzed. The parameters of both sphincters in resting stage were summarized and those during solid and liquid swallows were compared. KEY RESULTS Normative HRM values of sphincter parameters in solid and liquid bolus swallows in China were established. The UES residual pressure of solid bolus swallows was lower than that of liquid bolus (0.3±5.5 mm Hg vs 4.8±5.9 mm Hg, P=.000). The time parameters of UES relaxation between two types of bolus swallows were similar. In solid bolus swallows, the intrabolus pressure (IBP) (13.8±5.1 mm Hg vs 10.9±5.7 mm Hg, P=.000) and LES relaxation time (11.0±2.1 seconds vs 8.7±1.3 seconds, P=.000) were higher. The 4-second integrated relaxation pressure between both bolus swallows was similar. CONCLUSIONS & INFERENCES The function of the UES and LES between solid and liquid bolus swallows is different. Chinese HRM parameters are different from the Chicago Classification (http://www.chictr.org.cn, Number ChiCTR-EOC-15007147).
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Affiliation(s)
- X-L Xiang
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - A Wang
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - L Tu
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - M-Y Ke
- Division of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Y-S Yang
- Division of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, China
| | - B Jiang
- Division of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - L Lin
- Division of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - N Dai
- Division of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, Zhejiang, China
| | - S-S Zhang
- Division of Gastroenterology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - L Tao
- Division of Gastroenterology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - H Xu
- Division of Gastroenterology, The First Hospital of Jilin University, Changchun, Jilin, China
| | - X-M Liang
- Division of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - X-C Fang
- Division of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Z-W Xia
- Division of Gastroenterology, Peking University Third Hospital, Beijing, China
| | - X Wang
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Disease, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - J-N Wu
- Division of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - M-F Wang
- Division of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - H-J Zhang
- Division of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Y-F Fang
- Division of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, Zhejiang, China
| | - C Shen
- Division of Gastroenterology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - J Wang
- Division of Gastroenterology, The First Hospital of Jilin University, Changchun, Jilin, China
| | - L-H Peng
- Division of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, China
| | - W-Y Li
- Division of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Z-F Wang
- Division of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - K Wang
- Division of Gastroenterology, Peking University Third Hospital, Beijing, China
| | - N Liu
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Disease, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - X-H Hou
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Zhao Q, Yu WW, Sun Y, Cong R, Xiang Q, Qin N, He XQ, Dai N. WO 3 Nanoparticles Based Gas Sensor for Acetone Detection with High Sensitivity and Fast Response. ACTA ACUST UNITED AC 2015. [DOI: 10.1166/sl.2015.3546] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zheng X, Chu H, Cong Y, Deng Y, Long Y, Zhu Y, Pohl D, Fried M, Dai N, Fox M. Self-reported lactose intolerance in clinic patients with functional gastrointestinal symptoms: prevalence, risk factors, and impact on food choices. Neurogastroenterol Motil 2015; 27:1138-46. [PMID: 26095206 DOI: 10.1111/nmo.12602] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [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: 12/29/2014] [Accepted: 04/27/2015] [Indexed: 12/13/2022]
Abstract
BACKGROUND Many patients complain of abdominal symptoms with dairy products; however, clinical and psychosocial factors associated with self-reported lactose intolerance (SLI) have not been assessed in large studies. In particular, data are lacking from lactase deficient populations. This prospective cohort study assessed the prevalence of, and risk factors for, SLI in Chinese patients attending a gastroenterology clinic. METHODS Consecutive patients completed questionnaires to assess digestive health (Rome III), psychological state (HADS), life event stress (LES), food intake, and quality-of-life (SF-8). A representative sample completed genetic studies and hydrogen breath testing (HBT) at the clinically relevant dose of 20 g lactose. KEY RESULTS SLI was present in 411/910 (45%) clinic patients with functional abdominal symptoms. The genotype in all subjects was C/C-13910. A small number of novel SNPs in lactase promoter region were identified, including C/T-13908 which appeared to confer lactase persistence. Over half of the patients (54%) completed the 20 g lactose HBT with 58% (285/492) reporting typical symptoms. Positive and negative predictive values of SLI for abdominal symptoms during HBT were 60% and 44%, respectively. Psychological state and stress were not associated with SLI in clinic patients. SLI impacted on physical quality-of-life and was associated with reduced ingestion of dairy products, legumes, and dried fruit (p ≤ 0.05). CONCLUSIONS & INFERENCES In a lactase deficient population, approximately half of patients attending clinic with functional gastrointestinal symptoms reported intolerance to dairy products; however, SLI did not predict findings on 20 g lactose HBT. Independent of psychosocial factors, SLI impacted on quality-of-life and impacted on food choices with restrictions not limited to dairy products.
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Affiliation(s)
- X Zheng
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - H Chu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Y Cong
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Y Deng
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Y Long
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Y Zhu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - D Pohl
- Division of Gastroenterology & Hepatology, University Hospital Zürich, Zürich, Switzerland.,Zürich Centre for Integrative Human Physiology (ZIHP), University of Zürich, Zürich, Switzerland
| | - M Fried
- Division of Gastroenterology & Hepatology, University Hospital Zürich, Zürich, Switzerland.,Zürich Centre for Integrative Human Physiology (ZIHP), University of Zürich, Zürich, Switzerland
| | - N Dai
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - M Fox
- Division of Gastroenterology & Hepatology, University Hospital Zürich, Zürich, Switzerland.,Zürich Centre for Integrative Human Physiology (ZIHP), University of Zürich, Zürich, Switzerland
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Zhao J, Zheng X, Chu H, Zhao J, Cong Y, Fried M, Fox M, Dai N. A study of the methodological and clinical validity of the combined lactulose hydrogen breath test with scintigraphic oro-cecal transit test for diagnosing small intestinal bacterial overgrowth in IBS patients. Neurogastroenterol Motil 2014; 26:794-802. [PMID: 24641100 DOI: 10.1111/nmo.12331] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [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: 11/23/2013] [Accepted: 02/21/2014] [Indexed: 12/14/2022]
Abstract
BACKGROUND Small intestinal bacterial overgrowth (SIBO) may be a cause of irritable bowel syndrome (IBS); however, current investigations have important limitations. We aimed to identify clinically relevant diagnostic criteria for SIBO based on lactulose hydrogen breath test (LHBT) alone and combined with scintigraphic measurement of oro-cecal transit (SOCT). METHODS Results of LHBT/SOCT investigation from 89 IBS patients and 13 healthy volunteers were included in a systematic analysis of six published criteria for SIBO diagnosis. Clinical relevance of competing criteria was determined by assessing (i) prevalence of SIBO in IBS patients and healthy volunteers (ii) if SIBO diagnosis predicted improvement in IBS symptoms in a prospective, pilot therapeutic trial of a non-absorbable antibiotic (rifaximin 600 mg b.d.) in IBS patients. KEY RESULTS Reproducibility of SIBO diagnosis by combined LHBT/SOCT was near perfect. A ≥5 ppm H2 increase prior to appearance of cecal contrast was detected in more IBS patients than healthy volunteers (35/89 vs 1/13; p = 0.026), but not for other diagnostic criteria. IBS patients with SIBO, compared to those without SIBO, reported significantly greater improvement in abdominal symptoms following rifaximin therapy (p < 0.002 overall IBS symptom severity). This improvement was most marked in D-IBS patients in whom all symptoms improved, including stool frequency and consistency (all p < 0.004). CONCLUSIONS & INFERENCES Combined LHBT/SOCT testing using a H2 5 ppm cutoff may identify a subgroup of IBS patients with SIBO. Pilot data examining the clinical response to rifaximin suggest that this subset of IBS patients may benefit more than those with a normal test.
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Affiliation(s)
- J Zhao
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China; Division of Gastroenterology & Hepatology, Tongde Hospital of Zhejiang Province, Hangzhou, China
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Sun YC, Chen H, Vorobyev AY, Liu J, Li H, Dai N, Wang Y, Guo C, Lü PJ. High-Intensity Femtosecond Laser Ablation of Human Enamel and Dentin. J Med Imaging Hlth Inform 2014. [DOI: 10.1166/jmihi.2014.1280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zhu C, Ren C, Han J, Ding Y, Du J, Dai N, Dai J, Ma H, Hu Z, Shen H, Xu Y, Jin G. A five-microRNA panel in plasma was identified as potential biomarker for early detection of gastric cancer. Br J Cancer 2014; 110:2291-9. [PMID: 24595006 PMCID: PMC4007222 DOI: 10.1038/bjc.2014.119] [Citation(s) in RCA: 177] [Impact Index Per Article: 17.7] [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] [Subscribe] [Scholar Register] [Revised: 01/22/2014] [Accepted: 02/10/2014] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Circulating microRNAs (miRNAs) have been implicated as novel biomarkers for gastric cancer (GC) diagnosis. However, the mixture of GC subtypes may have led to the inconsistent circulating miRNA profiles, and the clinical performance of circulating miRNAs has not yet been evaluated independently on early detection of GC. METHODS A four-phase study was designed with a total of 160 cancer-free controls, 124 patients with gastric non-cardia adenocarcinoma (GNCA) and 36 patients diagnosed gastric cardia adenocarcinoma (GCA). In the discovery phase, we screened the miRNA expression profile in plasma of 40 GNCA patients (stage I) and 40 matched controls by TaqMan low density array (TLDA) chips with pooled samples. Differentially expressed miRNAs were further validated in individual sample using quantitative reverse-transcriptase PCR (qRT-PCR) in the training phase. Subsequently, in an independent validation phase, the identified miRNAs were evaluated in 48 GNCA patients (stage I) and 102 matched controls. Finally, the identified miRNAs were further assessed in an external validation phase including advanced GNCA and GCA patients. Additionally, the expression levels of identified miRNAs were measured in the media of BGC823 and MGC803 cell lines. RESULTS Five miRNAs (miR-16, miR-25, miR-92a, miR-451 and miR-486-5p) showed consistently elevated levels in plasma of the GC patients as compared with controls, and were identified to be potential markers for GNCA with area under the receiver operating characteristic (ROC) curves (AUCs) ranging from 0.850 to 0.925 and 0.694 to 0.790 in the training and validation phases, respectively. The five-miRNA panel presented a high diagnostic accuracy for the early-stage GNCA (AUCs=0.989 and 0.812 for the training and validation phases, respectively). Three miRNAs (miR-16, miR-25 and miR-92a) were excreted into the culture media of GC cell lines. CONCLUSIONS The five-miRNA panel in plasma may serve as a potential non-invasive biomarker in detecting the early-stage GC.
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Affiliation(s)
- C Zhu
- Department of Epidemiology and Biostatistics, Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Section of Clinical Epidemiology, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing 211166, China
| | - C Ren
- Department of Epidemiology and Biostatistics, Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Department of Clinical Laboratory, Northern Jiangsu People's Hospital, Yangzhou 225001, China
| | - J Han
- Department of Epidemiology and Biostatistics, Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Section of Clinical Epidemiology, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing 211166, China
| | - Y Ding
- Department of Gastroenterology, Yangzhou First People's Hospital, Yangzhou 225001, China
| | - J Du
- Department of Epidemiology and Biostatistics, Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - N Dai
- Department of Epidemiology and Biostatistics, Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - J Dai
- Department of Epidemiology and Biostatistics, Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - H Ma
- Department of Epidemiology and Biostatistics, Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Z Hu
- Department of Epidemiology and Biostatistics, Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Section of Clinical Epidemiology, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing 211166, China
| | - H Shen
- Department of Epidemiology and Biostatistics, Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Section of Clinical Epidemiology, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing 211166, China
| | - Y Xu
- Department of Epidemiology and Biostatistics, Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- E-mail:
| | - G Jin
- Department of Epidemiology and Biostatistics, Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Section of Clinical Epidemiology, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing 211166, China
- E-mail:
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Yang J, Fox M, Cong Y, Chu H, Zheng X, Long Y, Fried M, Dai N. Lactose intolerance in irritable bowel syndrome patients with diarrhoea: the roles of anxiety, activation of the innate mucosal immune system and visceral sensitivity. Aliment Pharmacol Ther 2014; 39:302-11. [PMID: 24308871 DOI: 10.1111/apt.12582] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [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: 08/12/2013] [Revised: 09/14/2013] [Accepted: 11/19/2013] [Indexed: 12/12/2022]
Abstract
BACKGROUND Irritable bowel syndrome patients with diarrhoea (IBS-D) often report intolerance to milk; however, the mechanism underlying these symptoms is unknown. AIM To assess the role of psychological factors, immune activation and visceral sensitivity on the development of lactose intolerance (LI) in IBS-D patients. METHODS Fifty-five IBS-D patients and 18 healthy controls (HCs) with lactase deficiency underwent a 20-g lactose hydrogen breath test (LHBT). Patients were categorised as lactose malabsorption (LM; malabsorption only) or LI [malabsorption plus increase in total symptom score (TSS). Measurements included (i) psychological status; (ii) enteric biopsies with quantification of mast cells (MCs), T-lymphocytes and enterochromaffin cells; (iii) serum cytokines; (iv) rectal sensitivity before and after lactose ingestion. RESULTS LI was more prevalent in IBS-D patients than HCs [25/55 (46%) vs. 3/18 (17%), P = 0.029]. IBS-D patients with LI had (i) higher levels of anxiety than those with LM (P = 0.017) or HCs (P = 0.006); (ii) increased mucosal MCs compared with LM (P = 0.006) and HCs (P < 0.001); (iii) raised serum TNF-α compared with LM (P = 0.034) and HCs (P < 0.001) and (iv) increased rectal sensitivity after lactose ingestion compared with LM (P < 0.001) or HCs (P < 0.001). Severity of abdominal symptoms after lactose ingestion was associated with the increase in visceral sensitivity after lactose intake (r = 0.629, P < 0.001), MCs (r = 0.650, P < 0.001) and anxiety (r = 0.519, P < 0.001). CONCLUSIONS IBS-D patients with lactose intolerence are characterised by anxiety, mucosal immune activation and increased visceral sensitivity after lactose ingestion. The presence of these biomarkers may indicate an IBS phenotype that responds to dietary therapy and/or mast cell stabilisers.
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Affiliation(s)
- J Yang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China; Department of Gastroenterology, The First People's Hospital of Hangzhou, Hangzhou, China
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Dai N, Zhong ZY, Cun YP, Qing Y, Chen C, Jiang P, Li MX, Wang D. Alteration of the microRNA expression profile in human osteosarcoma cells transfected with APE1 siRNA. Neoplasma 2013; 60:384-94. [PMID: 23581410 DOI: 10.4149/neo_2013_050] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Apurinic/apyrimidinic endonuclease1 (APE1), which has the dual functions of DNA repair and redox regulation, is considered to be a promising potential target in cancer treatment. Microarray and qRT-PCR were used to confirm the change of miRNA followed by analysis with comprehensive bioinformatics-based analysis. Both microarray and qRT-PCR demonstrated that 13 microRNAs (miRNAs) were significantly changed (>2-fold) in APE1 knockdown HOS cells; seven of them (hsa-miR-451, hsa-miR-1290, hsa-miR-765, hsa-miR-483-5p, hsa-miR-513a-5p, hsa-miR-129-5p and hsa-miR-31) were up-regulated and the other six (hsa-miR-29b, hsa-miR-197, has-let-7b, hsa-miR-324-5p, hsa-let-7i and hsa-miR-484) were down-regulated. Furthermore, pathway analysis showed that these miRNAs and their target genes affected by the expression of APE1 were involved in pathways relating to developmental processes, regulation of cellular processes, cell signaling (such as TGF-β, Wnt, MAPK and the p53 signaling pathway) and cancers. There are putative binding sites of NF-κB, p53, HIF-1α, AP-1, PEBP2, ATF, NF-Y, Pax-2,CREB and c-Myb in the promoters of several down regulated miRNAs, indicating that APE1 may regulate miRNAs via transcription factors. Our data suggest that our understanding of the biological functions of APE1 will inevitably expand due to the novel pathways that APE1 uses to regulate gene expression through miRNAs.
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Affiliation(s)
- N Dai
- Third Military Medical University, Chongqing, People's Republic of China
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Zhong Z, Gu X, Zhang Z, Wang D, Qing Y, Li M, Dai N. Recombinant human endostatin combined with definitive chemoradiotherapy as primary treatment for patients with unresectable but without systemic metastatic squamous cell carcinoma of the oesophagus. Br J Radiol 2012; 85:e1104-9. [PMID: 22898155 PMCID: PMC3500809 DOI: 10.1259/bjr/15321801] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Revised: 10/07/2011] [Accepted: 10/31/2011] [Indexed: 01/14/2023] Open
Abstract
OBJECTIVE The objective of this study was to review the outcomes of recombinant human endostatin combined with chemoradiotherapy (CRT) as primary treatment for patients with unresectable but without systemic metastatic squamous cell carcinoma (SCC) of the oesophagus. METHODS A total of 38 patients with unresectable but without systemic metastatic SCC of the oesophagus (T(4) or stage IVA) were retrospectively studied. 18 patients were treated with recombinant human endostatin combined with 5-fluorouracil (5-FU)/cisplatin (CDDP)-based CRT and 20 were treated with 5-FU/CDDP-based CRT alone. Short- and long-term effects including initial treatment response, survival and treatment-related complications were assessed with a median follow-up period of 36.1 months. RESULTS CRT combined with endostatin resulted in a marked improvement in complete response rates (44.4% vs 30% in the CRT-alone group), and an increase in the 1-year and 3-year overall survival rates (72% vs 50.0% and 32% vs 22.0%, respectively), while the median time to progression was extended to 11.3 months in the combination group vs 8.1 months in the CRT-alone group. There were no treatment-related toxicities that could be attributed specifically to the endostatin, and the toxicities observed across the two groups are probably due to the CRT itself. CONCLUSIONS The short- and long-term effects of CRT combined with endostatin were an improvement over that of CRT alone in this retrospective cohort study. This combined treatment modality may be a promising treatment modality for the patients with unresectable but without systemic metastatic oesophageal cancer. Further prospective randomised control studies are needed to confirm this finding.
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Affiliation(s)
- Z Zhong
- Department of Cancer Center, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, China.
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Huang CY, Tao JC, Sun Y, Zhang RJ, Wu YZ, Chen X, Dai N. Incubating non-prefabricated nanocrystals in anodized nanotubes for TiO2 nano-hybrids. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2012.08.019] [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] [Indexed: 11/16/2022]
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Harel-Beja R, Tzuri G, Portnoy V, Lotan-Pompan M, Lev S, Cohen S, Dai N, Yeselson L, Meir A, Libhaber SE, Avisar E, Melame T, van Koert P, Verbakel H, Hofstede R, Volpin H, Oliver M, Fougedoire A, Stalh C, Fauve J, Copes B, Fei Z, Giovannoni J, Ori N, Lewinsohn E, Sherman A, Burger J, Tadmor Y, Schaffer AA, Katzir N. A genetic map of melon highly enriched with fruit quality QTLs and EST markers, including sugar and carotenoid metabolism genes. Theor Appl Genet 2010; 121:511-33. [PMID: 20401460 DOI: 10.1007/s00122-010-1327-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2009] [Accepted: 03/22/2010] [Indexed: 05/03/2023]
Abstract
A genetic map of melon enriched for fruit traits was constructed, using a recombinant inbred (RI) population developed from a cross between representatives of the two subspecies of Cucumis melo L.: PI 414723 (subspecies agrestis) and 'Dulce' (subspecies melo). Phenotyping of 99 RI lines was conducted over three seasons in two locations in Israel and the US. The map includes 668 DNA markers (386 SSRs, 76 SNPs, six INDELs and 200 AFLPs), of which 160 were newly developed from fruit ESTs. These ESTs include candidate genes encoding for enzymes of sugar and carotenoid metabolic pathways that were cloned from melon cDNA or identified through mining of the International Cucurbit Genomics Initiative database (http://www.icugi.org/). The map covers 1,222 cM with an average of 2.672 cM between markers. In addition, a skeleton physical map was initiated and 29 melon BACs harboring fruit ESTs were localized to the 12 linkage groups of the map. Altogether, 44 fruit QTLs were identified: 25 confirming QTLs described using other populations and 19 newly described QTLs. The map includes QTLs for fruit sugar content, particularly sucrose, the major sugar affecting sweetness in melon fruit. Six QTLs interacting in an additive manner account for nearly all the difference in sugar content between the two genotypes. Three QTLs for fruit flesh color and carotenoid content were identified. Interestingly, no clear colocalization of QTLs for either sugar or carotenoid content was observed with over 40 genes encoding for enzymes involved in their metabolism. The RI population described here provides a useful resource for further genomics and metabolomics studies in melon, as well as useful markers for breeding for fruit quality.
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Affiliation(s)
- R Harel-Beja
- Department of Vegetable Research, Agricultural Research Organization, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay, 30095, Israel
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Zhao J, Fox M, Cong Y, Chu H, Shang Y, Fried M, Dai N. Lactose intolerance in patients with chronic functional diarrhoea: the role of small intestinal bacterial overgrowth. Aliment Pharmacol Ther 2010; 31:892-900. [PMID: 20132150 DOI: 10.1111/j.1365-2036.2010.04252.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Many studies report a high prevalence of lactose intolerance in patients with functional, gastrointestinal disease. AIM To evaluate the role of small intestinal bacterial overgrowth (SIBO) in condition of lactose intolerance and the mechanism by which SIBO may impact lactose tolerance in affected patients. METHODS Consecutive out-patients with chronic functional diarrhoea (CFD) and healthy controls underwent a validated 20 g lactose hydrogen breath test (HBT). Patients completed also a 10 g lactulose HBT with concurrent assessment of small bowel transit by scintigraphy. RESULTS Lactose malabsorption was present in 27/31 (87%) patients with CFD and 29/32 (91%) healthy controls (P = 0.708). From the patient group 14/27 (52%) had lactose intolerance and 13/27 (48%) experienced no symptoms (lactose malabsorption controls). Only 5 (17%) healthy controls reported symptoms (P < 0.01). The oro-caecal transit time was similar between patient groups with or without symptoms (P = 0.969). SIBO was present in 11 (41%) subjects and was more prevalent in lactose intolerance than in lactose malabsorption [9/14 (64%) vs. 2/13 (15%), P = 0.018]. Symptom severity was similar in lactose intolerance patients with and without SIBO (P = 0.344). CONCLUSIONS Small intestinal bacterial overgrowth increases the likelihood of lactose intolerance in patients with CFD as a direct result of lactose fermentation in the small intestine, independent of oro-caecal transit time and visceral sensitivity.
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Affiliation(s)
- J Zhao
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Dai N, Jenkinson SF, Fleet GWJ, Watkin DJ. 3,4-O-Isopropyl-idene-2-C-methyl-d-galactonolactone. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o406-7. [PMID: 21579826 PMCID: PMC2979786 DOI: 10.1107/s1600536810001613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2010] [Accepted: 01/13/2010] [Indexed: 12/02/2022]
Abstract
X-ray crystallography unequivocally confirmed the stereochemistry of the 2-C-methyl group in the title molecule, C10H16O6, in which the 1,5-lactone ring exists in a boat conformation. The use of d-galactose in the synthesis determined the absolute stereochemistry. The crystal exists as O—H⋯O hydrogen-bonded layers in the ab plane, with each molecule acting as a donor and acceptor for two hydrogen bonds.
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Xing W, Zuo JE, Dai N, Cheng J, Li J. Reactor performance and microbial community of an EGSB reactor operated at 20 and 15°C. J Appl Microbiol 2009; 107:848-57. [DOI: 10.1111/j.1365-2672.2009.04260.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Dai N, Cong Y, Yuan H. Prevalence of irritable bowel syndrome among undergraduates in Southeast China. Dig Liver Dis 2008; 40:418-24. [PMID: 18339591 DOI: 10.1016/j.dld.2008.01.019] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [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: 10/21/2007] [Revised: 01/10/2008] [Accepted: 01/29/2008] [Indexed: 01/06/2023]
Abstract
BACKGROUND There is a wide range in reported prevalence of irritable bowel syndrome worldwide. From the data appeared recently in medical literatures in China, it seems that the incidence of irritable bowel syndrome in young adults is not dissimilar to the one in the Western countries. AIMS To explore the prevalence and epidemiological variations of irritable bowel syndrome in an undergraduate student population in Southeast China on the basis of the Rome II and Rome III criteria. METHODS All the undergraduate student participants were administered self-report diagnostic measures for irritable bowel syndrome. RESULTS The sex-adjusted prevalence rate of irritable bowel syndrome was 4.7% (Rome II) and 10.4% (Rome III), respectively. When we combined irritable bowel syndrome mixed and irritable bowel syndrome unsubtyped in the Rome III subgroups into one group considering the counterpart in the Rome II subgroups was alternative irritable bowel syndrome, the agreement between the two ways to subdivide these 54 patients who were identified with irritable bowel syndrome by both the two criteria was 81%, with a kappa value of 0.67. By the Rome III criteria, we found a female predominance which was especially attributed to the subtypes of irritable bowel syndrome with constipation and unsubtyped. CONCLUSIONS Our study suggests that, in young adults in Southeast China, changing diagnostic criteria for irritable bowel syndrome from Rome II to Rome III may affect women more than men on not only the overall prevalence rate but also the sex-difference present or not, especially in irritable bowel syndrome with constipation and irritable bowel syndrome unsubtyped subgroups.
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Affiliation(s)
- N Dai
- Division of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, PR China
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Swartzberg D, Dai N, Gan S, Amasino R, Granot D. Effects of cytokinin production under two SAG promoters on senescence and development of tomato plants. Plant Biol (Stuttg) 2006; 8:579-86. [PMID: 16883480 DOI: 10.1055/s-2006-924240] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Two promoters of senescence-associated ARABIDOPSIS genes, SAG12 and SAG13, were used in tomato plants to express IPT that catalyzes the rate-limiting step in cytokinin biosynthesis. Expression of these heterologous promoters in tomato plants was analyzed using the reporter gene beta-glucuronidase. Both promoters are expressed in tomato leaves in a manner similar to their expression in ARABIDOPSIS plants. The SAG12 promoter is very specific to senescing leaves, whereas the SAG13 promoter is expressed in mature leaves prior to the onset of visible senescence and its expression increases in senescing leaves. Expression of both promoters in tomato tissues other than leaves was very low . IPT expressed under the control of SAG12 and SAG13 promoters ( PSAG12::IPT and PSAG13::IPT, respectively) resulted in suppression of leaf senescence and advanced flowering, as well as in a slight increase in fruit weight and fruit total soluble solids (TSS). However, expression of PSAG13::IPT also led to stem thickening, short internodal distances and loss of apical dominance. In contrast to the autoregulation of PSAG12::IPT, PSAG13::IPT is expressed at higher levels in mature leaves. This difference is likely due to PSAG13::IPT exhibiting two phases of expression - a senescence-independent expression prior to the onset of senescence that is not subjected to autoregulation by cytokinin, and enhanced expression throughout senescence which is autoregualted by cytokinin. This moderate different autoregulated behavior of PSAG12::IPT and PSAG13::IPT markedly influenced plant development, emphasizing the biological effects of cytokinin in addition to senescence inhibition.
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Affiliation(s)
- D Swartzberg
- Institute of Plant Sciences, Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
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27
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Zhang Y, Ruan L, Fasola M, Boncompagni E, Dong Y, Dai N, Gandini C, Orvini E, Ruiz X. Little Egrets (Egretta garzetta) and trace-metal contamination in wetlands of China. Environ Monit Assess 2006; 118:355-68. [PMID: 16897550 DOI: 10.1007/s10661-006-1496-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2005] [Accepted: 07/29/2005] [Indexed: 05/11/2023]
Abstract
The rapidly developing Asian countries may face threatening environmental contamination, that however remains largely unassessed. We studied persistent trace elements in three wetlands, Poyang Lake, relatively unpolluted, and Tai Lake, and Pearl River Delta, selected as hotspots of pollution in Central China. We adopted as indicator the Little Egret, a widespread colonial waterbird, and during 1999 and 2000 we collected and analysed the same samples as for a parallel study we conducted in Pakistan, e.g. eggs, body feathers of chicks, prey spontaneously regurgitated by the chicks, and sediments at the areas most used by foraging egrets. The levels of trace-metals at our three study areas were similar, or within the range, of those found in the few other studies for East Asia, with few exceptions. The concentrations of the various elements were below the threshold that may affect the survival or reproduction of the birds, and even the highest concentrations relative to background, i.e. Se in eggs, and Hg in feathers at Pearl Delta, do not pose toxic hazards. In sediments, the levels of trace elements were lower than the critical levels assumed for contaminated soil, except for alarming high levels of As at Poyang. These results do not confirm our expectation, that Poyang was relatively uncontaminated, while Tai and Pearl were polluted. Although trace metal concentration differed significantly among the three study areas, these differences were minor and were not consistent among elements and samples. The bioaccumulation ratios from sediments through prey, feather and egg, were consistent with our previous findings for Pakistan. Only Hg exhibited high bioaccumulation, while Se and Zn had low accumulation, and the other elements no accumulation. This reasserts that feathers of predators such as egrets, may be more sensitive indicators of environmental contamination for the elements subject to bioaccumulation, whereas the sediments or the organisms low in the food chain are better indicators for the other elements.
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Affiliation(s)
- Y Zhang
- School of Life Sciences, Lanzhou University, Lanzohu, 730000, PR China
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28
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Granot D, Dai N. Sugar induced cell death in yeast is dependent on the rate of sugar phosphorylation as determined by Arabidopsis thaliana hexokinase. Cell Death Differ 2003; 4:555-9. [PMID: 14555968 DOI: 10.1038/sj.cdd.4400280] [Citation(s) in RCA: 17] [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] [Subscribe] [Scholar Register] [Received: 08/13/1999] [Revised: 04/13/1999] [Accepted: 05/15/1999] [Indexed: 11/08/2022] Open
Abstract
Sugars like glucose and fructose induce death of yeast cells within a few hours, in the absence of additional nutrients to support growth, while cells incubated in water remain viable for weeks. This sugar-induced cell death (SICD) by glucose and fructose required glucose or fructose phosphorylation since yeast cells deficient in hexose phosphorylation did not die. However, when hexose phosphorylation is restored by complementation with Arabidopsis thaliana hexokinase, the cells died. The affinity of A. thaliana hexokinase is about 400 times higher for glucose than for fructose, therefore, A. thaliana hexokinase was further utilized to study the role of hexose phosphorylation in SICD. The rate of SICD of hexokinase-deficient yeast cells expressing A. thaliana hexokinase was significantly slower in fructose than in glucose, indicating that SICD is determined by the rate of hexose phosphorylation. The significance of hexose phosphorylation and its role in SICD is discussed.
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Affiliation(s)
- D Granot
- Department of Field Crops and Natural Resources, Institute of Field & Garden Crops, Agricultural Research Organization, The Volcani Center, Bet Dagan, PO Box 6, 50250 Israel.
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29
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Le TH, Pearson MS, Blair D, Dai N, Zhang LH, McManus DP. Complete mitochondrial genomes confirm the distinctiveness of the horse-dog and sheep-dog strains of Echinococcus granulosus. Parasitology 2002; 124:97-112. [PMID: 11811807 DOI: 10.1017/s0031182001008976] [Citation(s) in RCA: 106] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Unlike other members of the genus, Echinococcus granulosus is known to exhibit considerable levels of variation in biology, physiology and molecular genetics. Indeed, some of the taxa regarded as 'genotypes' within E. granulosus might be sufficiently distinct as to merit specific status. Here, complete mitochondrial genomes are presented of 2 genotypes of E. granulosus (G1-sheep-dog strain: G4-horse-dog strain) and of another taeniid cestode, Taenia crassiceps. These genomes are characterized and compared with those of Echinococcus multilocularis and Hymenolepis diminuta. Genomes of all the species are very similar in structure, length and base-composition. Pairwise comparisons of concatenated protein-coding genes indicate that the G1 and G4 genotypes of E. granulosus are almost as distant from each other as each is from a distinct species, E. multilocularis. Sequences for the variable genes atp6 and nad3 were obtained from additional genotypes of E. granulosus, from E. vogeli and E. oligarthrus. Again, pairwise comparisons showed the distinctiveness of the G1 and G4 genotypes. Phylogenetic analyses of concatenated atp6, nad1 (partial) and cox1 (partial) genes from E. multilocularis, E. vogeli, E. oligarthrus, 5 genotypes of E. granulosus, and using T. crassiceps as an outgroup, yielded the same results. We conclude that the sheep-dog and horse-dog strains of E. granulosus should be regarded as distinct at the specific level.
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MESH Headings
- Amino Acid Sequence
- Animals
- Base Sequence
- Codon, Initiator
- Codon, Terminator
- DNA, Mitochondrial/chemistry
- DNA, Mitochondrial/genetics
- DNA, Mitochondrial/isolation & purification
- DNA, Protozoan/chemistry
- DNA, Protozoan/genetics
- DNA, Protozoan/isolation & purification
- Dogs
- Echinococcus/chemistry
- Echinococcus/classification
- Echinococcus/genetics
- Horses
- Molecular Sequence Data
- Nucleic Acid Conformation
- Polymerase Chain Reaction
- RNA, Transfer/chemistry
- RNA, Transfer/genetics
- Sequence Homology, Nucleic Acid
- Sheep
- Substrate Specificity
- Taenia/chemistry
- Taenia/genetics
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Affiliation(s)
- T H Le
- Molecular Parasitology Laboratory, Australian Centre for International and Tropical Health and Nutrition, The Queensland Institute of Medical Research and The University of Queensland, Brisbane
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30
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Abstract
Three fructokinase isozymes (FKI, FKII, FKIII) were separated from both immature and ripe tomato fruit pericarp. All three isozymes were specific for fructose with undetectable activity towards glucose or mannose. The three isozymes could be distinguished from one another with respect to response to fructose, Mg and nucleotide donor concentrations and this allowed the comparison of the fruit enzymes with the gene products of the two known cloned tomato fructokinase genes, LeFRK1 and LeFRK2. FKI was characterized by both substrate (fructose), as well as Mg, inhibition; FKII was inhibited by neither fructose nor Mg; and FKIII was inhibited by fructose but not by Mg. ATP was the preferred nucleotide donor for all three FKs and FKI showed inhibition by CTP and GTP above 1 mM. All three FKs showed competitive inhibition by ADP. During the maturation of the tomato fruit total FK activity decreased dramatically. There were decreases in activity of all three FKs, nevertheless, all were still observed in the ripe fruit. The two tomato LeFRK genes were expressed in yeast and the gene products were characterized with respect to the distinguishing characteristics of fructose, Mg and nucleotide inhibition. Our results indicate that FKI is the gene product of LeFRK2 and FKII is probably the gene product of LeFRK1.
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Affiliation(s)
- M Petreikov
- Department of Vegetable Crops, Agricultural Research Organization, Volcani Center, 50250, Bet Dagan, Israel
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31
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Wu J, Si J, Cao Q, Lü W, Weng J, Lü B, Dai N. [The effect of epidermal growth factor on the pathologic changes of gastric mucosa in SD rats with chronic atrophic gastritis]. Zhonghua Nei Ke Za Zhi 2001; 40:169-72. [PMID: 11798573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To study the effect of epidermal growth factor (EGF) on the pathologic changes of gastric mucosa in rats with chronic atrophic gastritis(CAG). METHODS The established rat models of CAG were divided into therapy group and control group. The rats in the therapy group received EGF 10 microg/kg subcutaneously (SC), whereas these in the control group the same volume of normal saline SC. 12 weeks later, all rats were killed by cervical dislocation and their gastric mucosa were examined with microscope. RESULTS The grade of inflammatory cell infiltration in the therapy group was lower than that in the control group (P < 0.01). The thickness of gastric mucosal gland layer was (215.0 +/- 20.7) microm in the therapy group and (139.2 +/- 13.8) microm in the control group (P < 0.01). The ratio of the thickness of gastric mucosal glands and muscularis mucosa(L(1)/L(2)) was 2.70 +/- 0.34 in the therapy group and 1.27 +/- 0.27 in the control group (P < 0.01). The number of gastric glands in 1 mm length of mucosal layer was 26.20 +/- 1.27 in the therapy group and 19.90 +/- 1.78 in the control group (P < 0.01). In the therapy group, the gastric glands were rearranged in order, without signs of malignant proliferation. The width of the expression of proliferating cell nuclear antigen (PCNA ) of gastric mucosa was higher in the therapy group than in the control group [(77.70 +/- 4.16) microm vs (54.40 +/- 4.54) microm, P < 0.01]. CONCLUSIONS EGF played a therapeutic role in reversing the gastric mucosal atrophy of the rats with CAG. It promoted the expression of PCNA, which induced a protective proliferation of the gastric mucosal lesions in the rats with CAG.
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Affiliation(s)
- J Wu
- Department of Gastroenterology of Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hongzhou 310016, China
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Menu T, Rothan C, Dai N, Petreikov M, Etienne C, Destrac-Irvine A, Schaffer A, Granot D, Ricard B. Cloning and characterization of a cDNA encoding hexokinase from tomato. Plant Sci 2001; 160:209-218. [PMID: 11164592 DOI: 10.1016/s0168-9452(00)00332-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two different partial sequences encoding putative hexokinase (HXK, ATP: hexose-6-phosphotransferase, EC 2.7.1.1) were isolated from tomato (Lycopersicon esculentum) by RT-PCR using degenerate primers. Southern blot analysis suggested the existence of two divergent HXK genes. A complete cDNA of one HXK was isolated by screening a cDNA library prepared from young cherry tomato fruit. The 1770 bp cDNA of LeHXK2 contained an open reading frame encoding a 496 amino acid protein that has 69% identity with the two Arabidopsis HXKs, 83 and 85% identity with potato StHXK1 and tobacco NtHXK, respectively. However, this clone had 97% amino acid identity with potato StHXK2 and, therefore, was named LeHXK2. LeHXK2 cDNA was expressed in a triple mutant yeast (Saccharomyces cerevisiae) strain which lacked the ability to phosphorylate glucose and fructose and, therefore, was unable to grow on these sugars as carbon sources. Mutant cells expressing LeHXK2 grew on both glucose and fructose with shorter doubling time on glucose. The kinetic properties of LeHXK2 expressed in yeast were determined after the purification of LeHXK2 by HPLC-ion exchange chromatography, confirming the identity of LeHXK2 as hexokinase with higher affinity to glucose. LeHXK2 mRNA was detected by RT-PCR expression analysis in all organs and tissues and at all stages of fruit development. However, semi-quantitative RT-PCR analysis showed that LeHXK2 was most highly expressed in flowers.
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Affiliation(s)
- T Menu
- Unité de Physiologie Végétale, Institut National de la Recherche Agronomique, B.P. 81, 33883, Villenave d'Ornon, France
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33
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Dai N, Zeng M, Li J. [Experimental study on inhibitory effect of Chinese herbal compound on hepatocyte cytochrome P450 II E1 expression in rat model of nonalcoholic fatty liver]. Zhongguo Zhong Xi Yi Jie He Za Zhi 2000; 20:453-5. [PMID: 11789234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To study the effect of Chinese herbal compound (CHC) on hepatocyte cytochrome P450 II E1 expression in rat model of nonalcoholic fatty liver (NFL). METHODS CHC was given to the models of NFL formed by high fat diet, and changes on pathology of liver and hepatocyte cytochrome P450 II E1 expression, as well as the contents of malonyldialdehyde (MDA), superoxide dismutase (SOD), glutathione (GSH), vitamin E (VitE) and triglyceride (TG) in liver were observed and compared with those in the control group. RESULTS The fatty degeneration of liver recovered to normal basically in the CHC group. Immunohistochemical examination showed that CHC could inhibit the hepatocyte cytochrome P450 II E1 expression markedly, and restore the liver contents of MDA, SOD, GSH, VitE and TG to near normal range. CONCLUSION CHC could inhibit the hepatocyte cytochrome P450 II E1 expression markedly in rats with fatty liver, therefore, has the effect of preventing fatty liver.
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Affiliation(s)
- N Dai
- Renji Hospital, Shanghai Second Medical University, Shanghai (200001)
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34
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Dai N, Schaffer A, Petreikov M, Shahak Y, Giller Y, Ratner K, Levine A, Granot D. Overexpression of Arabidopsis hexokinase in tomato plants inhibits growth, reduces photosynthesis, and induces rapid senescence. Plant Cell 1999; 11:1253-66. [PMID: 10402427 PMCID: PMC144264 DOI: 10.1105/tpc.11.7.1253] [Citation(s) in RCA: 211] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Sugars are key regulatory molecules that affect diverse processes in higher plants. Hexokinase is the first enzyme in hexose metabolism and may be a sugar sensor that mediates sugar regulation. We present evidence that hexokinase is involved in sensing endogenous levels of sugars in photosynthetic tissues and that it participates in the regulation of senescence, photosynthesis, and growth in seedlings as well as in mature plants. Transgenic tomato plants overexpressing the Arabidopsis hexokinase-encoding gene AtHXK1 were produced. Independent transgenic plants carrying single copies of AtHXK1 were characterized by growth inhibition, the degree of which was found to correlate directly to the expression and activity of AtHXK1. Reciprocal grafting experiments suggested that the inhibitory effect occurred when AtHXK1 was expressed in photosynthetic tissues. Accordingly, plants with increased AtHXK1 activity had reduced chlorophyll content in their leaves, reduced photosynthesis rates, and reduced photochemical quantum efficiency of photosystem II reaction centers compared with plants without increased AtHXK1 activity. In addition, the transgenic plants underwent rapid senescence, suggesting that hexokinase is also involved in senescence regulation. Fruit weight, starch content in young fruits, and total soluble solids in mature fruits were also reduced in the transgenic plants. The results indicate that endogenous hexokinase activity is not rate limiting for growth; rather, they support the role of hexokinase as a regulatory enzyme in photosynthetic tissues, in which it regulates photosynthesis, growth, and senescence.
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Affiliation(s)
- N Dai
- Institute of Field and Garden Crops, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
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35
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Dai N, Zeng M, Li J. [Correlation between hepatocyte cytochrome P450IIE1 expression and oxidation, antioxidation in rat nonalcoholic steatosis model]. Zhonghua Gan Zang Bing Za Zhi 1999; 7:104-6. [PMID: 10488421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
OBJECTIVE To study the correlation between hepatocyte cytochrome P450 II E1(CYP II E1) expression and oxidation, antioxidation in rat nonalcoholic steatosis model. METHODS The expression of hepatocyte CYP II E1 antigen in rat steatosis model induced by high fat diet was detected with immnohistochemistry. Meanwhile, MDA, SOD, GSH and VitE contents in the liver were measured by biochemical analysis. RESULTS Expression of CYP II E1 in rat nonalcoholic steatosis by high fat diet was prominent in hepatic acinar zone 3, and had a more extensive acinar distribution from zone 3 to zone 2, MDA contents in fatty liver was significantly increased than in normal, SOD, GSH and VitE contents were significantly decreased than in normal. There were significant positive correlation between CYP II E1 and MDA (P < 0.01), and negative correlation between CYP II E1 and SOD, GSH, VitE (P < 0.05, P < 0.05, P < 0.01). CONCLUSIONS Hepatocyte CYP II E1 expression in nonalcoholic steatosis is prominent in hepatic acinar zone 3. Its expression resembles alcoholic fatty liver. There is significant correlation between CYP II E1 and lipid peroxidation.
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Affiliation(s)
- N Dai
- Shanghai Institute of Digestive Disease, Renji Hospital, Shanghai Second Medical University
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36
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Lu L, Zeng M, Li J, Hua J, Fan J, Fan Z, Dai N, Qiu D, Xiao S. [Effects of Kupffer cells stimulated by triglyceride and very low-density lipoprotein on proliferation of rat hepatic stellate cells]. Zhonghua Nei Ke Za Zhi 1999; 38:313-5. [PMID: 11798663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To study the effects of Kupffer cell-conditioned medium (KCCM) derived from triglyceride and very low-density lipoprotein (VLDL) treatment on proliferation of rat hepatic stellate cells (HSC). METHODS HSC and Kupffer cells were isolated from liver of Wistar rats by in situ perfusion with pronase and collagenase and density gradient centrifugation with Nycodenz and then cultured. KCCM was prepared and MTT colorimetric assay was used to detect HSC proliferation. RESULTS HSC and Kupffer cells were isolated successfully with high purity. 12.5 mg/L of triglyceride and 25 - 100 mg/L of VLDL promoted HSC proliferation (P < 0.05 or 0.01); KCCM + triglyceride and KCCM + VLDL might promote HSC proliferation as compared with a control group (P < 0.01). There was no significant difference between KCCM + triglyceride and KCCM + VLDL (P > 0.05). CONCLUSION The technique for isolation of HSC and Kupffer cells described here is simple and reliable. Triglyceride, VLDL and KCCM stimulated by them may promote HSC proliferation and be associated with fatty liver and hepatic fibrogenesis.
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Affiliation(s)
- L Lu
- Shanghai Institute of Digestive Diseases, Renji Hospital, Shanghai Second Medical University, Shanghai 200001
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37
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Lu L, Zeng M, Fan J, Li J, Liu Y, Ren W, Dai N. [Intercellular adhesion molecule-1 expression in experimental liver fibrosis]. Zhonghua Nei Ke Za Zhi 1999; 38:37-9. [PMID: 11798625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To explore the role of intercellular adhesion molecule-1 (ICAM-1) in experimental liver fibrosis. METHODS Experimental liver fibrosis models of rats were induced by high fat diet, low fat diet plus ethanol, high fat diet plus ethanol, and carbon tetrachloride subcutaneous injection respectively. At sacrifice, liver pathologic changes were studied and ICAM-1 expression was evaluated with immunohistochemistry by using a monoclonal antibody. RESULTS ICAM-1 expression was observed in the hepatocellular membrane; ICAM-1 positive hepatocytes were localized in zones of portal tract with focal necrosis and inflammatory damage. Staining for ICAM-1 was associated with the degree of liver inflammation and fibrosis. In the different models, the intensity of ICAM-1 expression was different; It ranged in an increasing order from high fat diet, low fat diet plus ethanol, high fat diet plus ethanol, and carbon tetrachloride model. The strongest reactivity for ICAM-1 was seen in carbon tetrachloride model (P < 0.05), the difference was significant as compared with the other models. However, there was no significant difference among the three other models (P > 0.05). CONCLUSION Upregulation of ICAM-1 expression in experimental liver fibrosis may be related with liver fibrogenesis.
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Affiliation(s)
- L Lu
- Shanghai Institute of Digestive Disease, Renji Hospital, Shanghai Second Medical University, Shanghai 200001
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38
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Affiliation(s)
- Z Fan
- Endoscopy Center, Changzhou Hospital of Chinese Traditional Medicine, Jlangsu, China
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39
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Yue GP, Chen Q, Dai N. [Experimental study on effect of bushen shengjing decoction on kidney yang and testicular dysfunction in rats]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1997; 17:289-91. [PMID: 9863114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
OBJECTIVE To explore the therapeutical mechanism of Bushen Shengjing Decoction (BSSJD) in treating infertility. METHODS Fed Wistar male rats with adenine 30 mg/100 g.d continuously for 30 days. The rats manifested the symptom which was similar to the human Kidney Yang Deficiency, the genitality dropped, the function of sperm-producing in the testis was disturbed, the contents of luteinizing hormone (LH), testosterone (T) and compound F (F) in blood were all lower than rats of normal group, P < 0.01. The model rats took the BSSJD 3 ml/100 g.d (each ml contains crude drugs 2 g) continuously for 10 days, interval for three days, then medicated again and total medication of BSSJD was 30 days. RESULTS The symptom of Kidney Yang Deficiency in rats was improved obviously, the genitality, sperm quality and function of sperm producing in testis were all enhanced obviously, so did the hormone level of LH, T, F in blood. Comparing to untreated control group, the difference was significant (P < 0.05). CONCLUSION BSSJD has the function of reinforcing Yang and replenishing essence and regulate the endocrinological function.
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Affiliation(s)
- G P Yue
- Institute of Acupuncture and Meridians, Anhui College of TCM, Hefei
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Kanayama Y, Dai N, Granot D, Petreikov M, Schaffer A, Bennett AB. Divergent fructokinase genes are differentially expressed in tomato. Plant Physiol 1997; 113:1379-84. [PMID: 9112782 PMCID: PMC158261 DOI: 10.1104/pp.113.4.1379] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Two cDNA clones (Frk1 and Frk2) encoding fructokinase (EC 2.7.1.4) were isolated from tomato (Lycopersicon esculentum). The Frk2 cDNA encoded a deduced protein of 328 amino acids that was more than 90% identical with a previously characterized potato (Solanum tuberosum) fructokinase. In contrast, the Frk1 cDNA encoded a deduced protein of 347 amino acids that shared only 55% amino acid identity with Frk2. Both deduced proteins possessed and ATP-binding motif and putative substrate recognition site sequences identified in bacterial fructokinases. The Frk1 cDNA was expressed in a mutant yeast (Saccharomyces cerevisiae) line, which lacks the ability to phosphorylate glucose and fructose and is unable to grow on glucose or fructose. Mutant cells expressing Frk1 were complemented to grow on fructose but not glucose, indicating that Frk1 phosphorylates fructose but not glucose, and this activity was verified in extracts of transformed yeast. The mRNA corresponding to Frk2 accumulated to high levels in young, developing tomato fruit, whereas the Frk1 mRNA accumulated to higher levels late in fruit development. The results indicate that fructokinase in tomato is encoded by two divergent genes, which exhibit a differential pattern of expression during fruit development.
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Affiliation(s)
- Y Kanayama
- Mann Laboratory, Department of Vegetable Crops, University of California, Davis 95616, USA
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Yue GP, Chen Q, Dai N. [Eighty-seven cases of male infertility treated by bushen shengjing pill in clinical observation and evaluation on its curative effect]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1996; 16:463-466. [PMID: 9387745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Eighty-seven cases of male infertility with semen abnormality were treated and observed by Bushen Shengjing Pill, its curative effect was evaluated with quantitative assessment and analytical comparison comprehensive scoring of semen routine analysis. These patients were treated for one to three courses of treatment, the semen quality was enhanced obviously, the comprehensive semen routine analysis score was enhanced significantly (P < 0.001) as compared with that before treatment, the spouse pregnant rate was 56.32% (49/87), and total effective rate was 95.40% (83/87). The result showed that this prescription had bidirectional regulatory function in folliclestimulating hormone, luteotropic hormone, testosterone, corticosterone, and could make the enhanced or reduced hormone level to normal value.
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Affiliation(s)
- G P Yue
- Institute of Acupuncture and Meridians, Anhui College of TCM, Hefei
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Granot D, Dai N. The 5' untranslated region of Arabidopsis thaliana calmodulin cDNA is an independent cDNA containing an open reading frame. Planta 1996; 198:162-163. [PMID: 8580768 DOI: 10.1007/bf00197600] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A cDNA clone, pAUK1, with an open reading frame (ORF) coding for a hypothetical 164-amino-acid protein was isolated from an Arabidopsis thaliana (L.) Heynh cDNA library. The clone was attached, tail to tail, to the 3' end of A. thaliana hexokinase cDNA. An almost identical sequence had been previously described as the 5' untranslated region (5' UTR) of A. thaliana calmodulin cDNA (ACaM-2). Sequence comparison with three additional A. thaliana truncated cDNA clones which appear in a database (GenBank) supports the conclusion that pAUK1 is identical to the 5' UTR of ACaM-2 and that the 5' UTR of ACaM-2 is an independent cDNA artificially linked to A. thaliana calmodulin cDNA.
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Affiliation(s)
- D Granot
- Department of Field Crops and Natural Resources, Institute of Field & Garden Crops, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel.
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Dai N, Schaffer AA, Petreikov M, Granot D. Arabidopsis thaliana hexokinase cDNA isolated by complementation of yeast cells. Plant Physiol 1995; 108:879-80. [PMID: 7610198 PMCID: PMC157434 DOI: 10.1104/pp.108.2.879] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Affiliation(s)
- N Dai
- Department of Field Crops and Natural Resources, Volcani Center, Bet Dagan, Israel
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Dai N, Ram-Mohan LR, Luo H, Yang GL, Zhang FC, Dobrowolska M, Furdyna JK. Observation of above-barrier transitions in superlattices with small magnetically induced band offsets. Phys Rev B Condens Matter 1994; 50:18153-18166. [PMID: 9976248 DOI: 10.1103/physrevb.50.18153] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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45
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Luo H, Dai N, Zhang FC, Samarth N, Dobrowolska M, Furdyna JK, Parks C, Ramdas AK. Observation of quasibound states in semiconductor single quantum barriers. Phys Rev Lett 1993; 70:1307-1310. [PMID: 10054343 DOI: 10.1103/physrevlett.70.1307] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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46
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Zhang FC, Luo H, Dai N, Samarth N, Dobrowolska M, Furdyna JK. Observation of type-I excitons and related confinement effects in type-II superlattices. Phys Rev B Condens Matter 1993; 47:3806-3810. [PMID: 10006487 DOI: 10.1103/physrevb.47.3806] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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47
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Zhang FC, Dai N, Luo H, Samarth N, Dobrowolska M, Furdyna JK, Ram-Mohan LR. Observation of localized above-barrier excitons in type-I superlattices. Phys Rev Lett 1992; 68:3220-3223. [PMID: 10045644 DOI: 10.1103/physrevlett.68.3220] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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48
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Dai N, Luo H, Zhang FC, Samarth N, Dobrowolska M, Furdyna JK. Spin superlattice formation in ZnSe/Zn1-xMnxSe multilayers. Phys Rev Lett 1991; 67:3824-3827. [PMID: 10044835 DOI: 10.1103/physrevlett.67.3824] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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49
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Dai N, Richens J. Pyoderma gangrenosum in Papua New Guinea. P N G Med J 1990; 33:247-51. [PMID: 2080678] [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: 12/30/2022]
Abstract
A severe case of pyoderma gangrenosum in a Papua New Guinean girl aged 11 years in reported. Multiple lesions of the arms, legs, buttocks and mouth were present. There was no associated disease. She was treated with very high doses of prednisolone and slow resolution over 3 months in hospital was observed.
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Affiliation(s)
- N Dai
- Goroka Hospital, Papua New Guinea
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50
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Luo QD, Xing ZM, Xiao W, Dai N, Shan YH, Huang GY, Luo SL. Clinical observations in 185 cases of ligament and tendon injuries treated by the method of dissipating blood stasis and promoting the meridian. J TRADIT CHIN MED 1989; 9:15-7. [PMID: 2761276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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