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Ni M, He J, Li T, Zhao G, Ji Z, Ren F, Leng J, Wu M, Huang R, Li P, Hou L. Establishment and Characterization of SV40 T-Antigen Immortalized Porcine Muscle Satellite Cell. Cells 2024; 13:703. [PMID: 38667318 PMCID: PMC11049531 DOI: 10.3390/cells13080703] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/06/2024] [Accepted: 04/06/2024] [Indexed: 04/28/2024] Open
Abstract
Muscle satellite cells (MuSCs) are crucial for muscle development and regeneration. The primary pig MuSCs (pMuSCs) is an ideal in vitro cell model for studying the pig's muscle development and differentiation. However, the long-term in vitro culture of pMuSCs results in the gradual loss of their stemness, thereby limiting their application. To address this conundrum and maintain the normal function of pMuSCs during in vitro passaging, we generated an immortalized pMuSCs (SV40 T-pMuSCs) by stably expressing SV40 T-antigen (SV40 T) using a lentiviral-based vector system. The SV40 T-pMuSCs can be stably sub-cultured for over 40 generations in vitro. An evaluation of SV40 T-pMuSCs was conducted through immunofluorescence staining, quantitative real-time PCR, EdU assay, and SA-β-gal activity. Their proliferation capacity was similar to that of primary pMuSCs at passage 1, and while their differentiation potential was slightly decreased. SiRNA-mediated interference of SV40 T-antigen expression restored the differentiation capability of SV40 T-pMuSCs. Taken together, our results provide a valuable tool for studying pig skeletal muscle development and differentiation.
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Affiliation(s)
- Mengru Ni
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (M.N.); (J.H.); (T.L.); (G.Z.); (Z.J.); (F.R.); (J.L.); (M.W.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Jingqing He
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (M.N.); (J.H.); (T.L.); (G.Z.); (Z.J.); (F.R.); (J.L.); (M.W.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Tao Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (M.N.); (J.H.); (T.L.); (G.Z.); (Z.J.); (F.R.); (J.L.); (M.W.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Gan Zhao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (M.N.); (J.H.); (T.L.); (G.Z.); (Z.J.); (F.R.); (J.L.); (M.W.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhengyu Ji
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (M.N.); (J.H.); (T.L.); (G.Z.); (Z.J.); (F.R.); (J.L.); (M.W.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Fada Ren
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (M.N.); (J.H.); (T.L.); (G.Z.); (Z.J.); (F.R.); (J.L.); (M.W.); (R.H.); (P.L.)
| | - Jianxin Leng
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (M.N.); (J.H.); (T.L.); (G.Z.); (Z.J.); (F.R.); (J.L.); (M.W.); (R.H.); (P.L.)
| | - Mengyan Wu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (M.N.); (J.H.); (T.L.); (G.Z.); (Z.J.); (F.R.); (J.L.); (M.W.); (R.H.); (P.L.)
| | - Ruihua Huang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (M.N.); (J.H.); (T.L.); (G.Z.); (Z.J.); (F.R.); (J.L.); (M.W.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
- Huai’an Academy, Nanjing Agricultural University, Huai’an 223001, China
| | - Pinghua Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (M.N.); (J.H.); (T.L.); (G.Z.); (Z.J.); (F.R.); (J.L.); (M.W.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
- Huai’an Academy, Nanjing Agricultural University, Huai’an 223001, China
| | - Liming Hou
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (M.N.); (J.H.); (T.L.); (G.Z.); (Z.J.); (F.R.); (J.L.); (M.W.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
- Huai’an Academy, Nanjing Agricultural University, Huai’an 223001, China
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Xiao W, Jiang N, Ji Z, Ni M, Zhang Z, Zhao Q, Huang R, Li P, Hou L. Single-Cell RNA Sequencing Reveals the Cellular Landscape of Longissimus Dorsi in a Newborn Suhuai Pig. Int J Mol Sci 2024; 25:1204. [PMID: 38256277 PMCID: PMC10816681 DOI: 10.3390/ijms25021204] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 01/13/2024] [Accepted: 01/15/2024] [Indexed: 01/24/2024] Open
Abstract
The introduction of single-cell RNA sequencing (scRNA-seq) technology has spurred additional advancements in analyzing the cellular composition of tissues. The longissimus dorsi (LD) in pigs serves as the primary skeletal muscle for studying meat quality in the pig industry. However, the single-cell profile of porcine LD is still in its infancy stage. In this study, we profiled the transcriptomes of 16,018 cells in the LD of a newborn Suhuai pig at single-cell resolution. Subsequently, we constructed a cellular atlas of the LD, identifying 11 distinct cell populations, including endothelial cells (24.39%), myotubes (18.82%), fibro-adipogenic progenitors (FAPs, 18.11%), satellite cells (16.74%), myoblasts (3.99%), myocytes (5.74%), Schwann cells (3.81%), smooth muscle cells (3.22%), dendritic cells (2.99%), pericytes (1.86%), and neutrophils (0.33%). CellChat was employed to deduce the cell-cell interactions by evaluating the gene expression of receptor-ligand pairs across different cell types. The results show that FAPs and pericytes are the primary signal contributors in LD. In addition, we delineated the developmental trajectory of myogenic cells and examined alterations in the expression of various marker genes and molecular events throughout various stages of differentiation. Moreover, we found that FAPs can be divided into three subclusters (NR2F2-FAPs, LPL-FAPs, and TNMD-FAPs) according to their biological functions, suggesting that the FAPs could be associated with the differentiation of tendon cell. Taken together, we constructed the cellular atlas and cell communication network in LD of a newborn Suhuai pig, and analyzed the developmental trajectory of myogenic cells and the heterogeneity of FAPs subpopulation cells. This enhances our comprehension of the molecular features involved in skeletal muscle development and the meat quality control in pigs.
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Affiliation(s)
- Wei Xiao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (W.X.); (N.J.); (Z.J.); (M.N.); (Z.Z.); (Q.Z.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Nengjing Jiang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (W.X.); (N.J.); (Z.J.); (M.N.); (Z.Z.); (Q.Z.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhengyu Ji
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (W.X.); (N.J.); (Z.J.); (M.N.); (Z.Z.); (Q.Z.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Mengru Ni
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (W.X.); (N.J.); (Z.J.); (M.N.); (Z.Z.); (Q.Z.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhaobo Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (W.X.); (N.J.); (Z.J.); (M.N.); (Z.Z.); (Q.Z.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Qingbo Zhao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (W.X.); (N.J.); (Z.J.); (M.N.); (Z.Z.); (Q.Z.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
- Huai’an Academy, Nanjing Agricultural University, Huai’an 223001, China
| | - Ruihua Huang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (W.X.); (N.J.); (Z.J.); (M.N.); (Z.Z.); (Q.Z.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
- Huai’an Academy, Nanjing Agricultural University, Huai’an 223001, China
| | - Pinghua Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (W.X.); (N.J.); (Z.J.); (M.N.); (Z.Z.); (Q.Z.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
- Huai’an Academy, Nanjing Agricultural University, Huai’an 223001, China
| | - Liming Hou
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (W.X.); (N.J.); (Z.J.); (M.N.); (Z.Z.); (Q.Z.); (R.H.); (P.L.)
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Pig Genetic Resources Evaluation and Utilization (Nanjing) of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
- Huai’an Academy, Nanjing Agricultural University, Huai’an 223001, China
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Kong FF, Pan GS, Ni M, Du C, Hu C, Ying HM. Prognostic Value of Lymph Node-to-Primary Tumor Ratio of PET Standardized Uptake Value for Nasopharyngeal Carcinoma: A Recursive Partitioning Risk Stratification Analysis. Int J Radiat Oncol Biol Phys 2023; 117:e594. [PMID: 37785796 DOI: 10.1016/j.ijrobp.2023.06.1948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) To evaluate the prognostic value of the lymph node-to-primary tumor ratio (NTR) of positron emission tomography (PET) standardized uptake value (SUV) for nasopharyngeal carcinoma (NPC) patients treated with induction chemotherapy (IC). MATERIALS/METHODS Four hundred and sixty-seven locoregionally advanced NPC patients with pretreatment 18F-fluorodeoxyglucose (18F-FDG) PET/computed tomography (CT) scans between September 2017 and November 2020 were retrospectively reviewed. All patients underwent IC plus intensity-modulated radiotherapy (IMRT). The receiver operating characteristic (ROC) analysis was used to determine the optimal cut-off value of SUV NTR. Kaplan-Meier method was used to evaluate survival rates. The recursive partitioning analysis (RPA) was performed to construct a risk stratification model. RESULTS The optimal cut-off value of SUV NTR was 0.74. Multivariate analyses showed that SUV NTR and overall stage were independent predictors for distant metastasis-free survival (DMFS) and regional recurrent-free survival (RRFS). Therefore, an RPA model based on the endpoint of DMFS was generated and categorized the patients into three distinct risk groups: RPA I (low-risk: SUV NTR<7.4 and stage III), RPA II (medium-risk: SUV NTR<7.4 and stage IVa, or SUV NTR≥7.4 and stage III), and RPA III (high-risk: SUV NTR≥7.4 and stage IVa), with a 3-year DMFS of 98.9%, 93.4%, and 84.2%, respectively. ROC analysis showed that the RPA model had superior predictive efficacy than the SUV NTR or overall stage alone. CONCLUSION SUV NTR was an independent prognosticator for distant metastasis and regional recurrence in locoregionally advanced NPC. The RPA risk stratification model base on SUV NTR provides improved DMFS and RRFS prediction over the 8th edition of the TNM staging system.
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Affiliation(s)
- F F Kong
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - G S Pan
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - M Ni
- Department of Oncology, shanghai Medical College, Shanghai, China
| | - C Du
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - C Hu
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - H M Ying
- Fudan University Shanghai Cancer Center, Shanghai, China
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He X, Hu M, Song C, Ni M, Liu L, Chen C, Wu D. Sodium New Houttuyfonate Effectively Improves Phagocytosis And Inhibits the Excessive Release of Inflammatory Factors By Repressing TLR4/NF-Кb Pathway in Macrophages. Curr Pharm Biotechnol 2023:CPB-EPUB-131113. [PMID: 37070797 DOI: 10.2174/1389201024666230418163100] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/20/2023] [Accepted: 04/03/2023] [Indexed: 04/19/2023]
Abstract
BACKGROUND Sodium new houttuyfonate (SNH) is an adduct of houttuyfonate, which is the main component of the common Chinese medicinal plant Houttuynia cordata. SNH has been widely used in antibacterial and anti-inflammatory treatments in clinics. However, the exact antimicrobial mechanism of SNH is still unclear, despite its mild direct antimicrobial activity in vitro. OBJECTIVES The aim of this study is to investigate the effect and possible mechanism of SNH on macrophages against bacteria in vitro. METHODS In this study, we assessed the antibacterial and anti-inflammatory effects of SNH on the RAW264.7 macrophage cell line against Pseudomonas aeruginosa, a major opportunistic pathogen. RESULTS Firstly, we found that SNH showed minimal toxicity on RAW264.7 macrophages. Secondly, our results indicated that SNH effectively inhibited the inflammatory reaction of macrophages stimulated by P. aeruginosa. We also found that SNH improved the phagocytosis and killing effect of RAW264.7 macrophages against P. aeruginosa in vitro. Furthermore, our results revealed that SNH effectively inhibited the expression of the TLR4/NF-кB pathway in macrophage RAW264.7 co-incubated with P. aeruginosa in vitro. CONCLUSION Based on our findings, SNH can significantly improve the phagocytosis of macrophages and inhibit the excessive release of inflammatory factors by repressing the TLR4/NF-кB pathway.
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Affiliation(s)
- Xiaomei He
- College of Biological and Pharmaceutical Engineering, West Anhui University, Lu'an 237012, China
| | - Mengxue Hu
- Department of Pathogenic Biology and Immunology, College of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Cheng Song
- College of Biological and Pharmaceutical Engineering, West Anhui University, Lu'an 237012, China
| | - Mengru Ni
- College of Biological and Pharmaceutical Engineering, West Anhui University, Lu'an 237012, China
| | - Longyun Liu
- College of Biological Engineering, Hefei Technology College, Hefei, 230000, China
| | - Cunwu Chen
- College of Biological and Pharmaceutical Engineering, West Anhui University, Lu'an 237012, China
| | - Daqiang Wu
- Department of Pathogenic Biology and Immunology, College of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei 230012, China
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Li H, Chen M, Xue C, Li L, Hu A, Yang W, Zheng Z, Ni M, Zhang L, Zeng Y, Peng J, Yao K, Zhou F, Liu Z, An X, Shi Y. 1744P Camrelizumab plus nab-paclitaxel in platinum-resistant patients with unresectable locally advanced or metastatic urothelial carcinoma: A multicentre, single-arm, phase II study. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1822] [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: 11/28/2022] Open
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Ni M, Li X, Xiong W, Yang Z, Zhang L, Chen J. P12-02 Application of human embryonic stem cell test models – The embryonic toxicity evaluation of Bisphenol A (BPA). Toxicol Lett 2022. [DOI: 10.1016/j.toxlet.2022.07.481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Fu J, Ni M, Chen JY. [Digital orthopedics technology leads the new development direction of arthroplasty]. Zhonghua Yi Xue Za Zhi 2022; 102:9-14. [PMID: 34991233 DOI: 10.3760/cma.j.cn112137-20210720-01619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Digital orthopedics technology is a new interdisciplinary subject, known as the third technological wave in the field of orthopedics. The development direction of arthroplasty is focused on hoping to improve the long-term prognosis of patients by imitating more natural kinematics and optimizing implant positioning strategies. At present, various digital orthopedic technologies such as virtual reality technology, navigation assistance systems, and patient-specific instrumentation (PSI) and robot-assisted surgery in joint surgery are in full swing. In this article, relevant domestic and foreign literature were extensively reviewed and the author's own experiences were summarize, and the advantages, disadvantages, clinical efficacy and future prospects of the above-mentioned various technologies were evaluated too.
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Affiliation(s)
- J Fu
- Senior Department of Orthopedics, the Fourth Medical Center of Chinese PLA General Hospital, Beijing 100042, China
| | - M Ni
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - J Y Chen
- Department of Orthopedics, the First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
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Klevebro F, Boshier PR, Savva KV, Waller A, Hage L, Ni M, Hanna GB, Low DE. Severe Dumping Symptoms Are Uncommon Following Transthoracic Esophagectomy But Significantly Decrease Health-Related Quality of Life in Long-Term, Disease-Free Survivors. J Gastrointest Surg 2021; 25:1941-1947. [PMID: 33150488 PMCID: PMC8321973 DOI: 10.1007/s11605-020-04670-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Accepted: 05/25/2020] [Indexed: 01/31/2023]
Abstract
BACKGROUND High-quality documentation of dumping symptoms after esophagectomy is currently limited. The aim of the study was to describe the incidence of symptoms associated with dumping syndrome and their relationship with health-related quality of life after esophagectomy. METHODS The study cohort was identified from prospective IRB-approved databases from two high-volume esophagectomy centers. Patients that were alive and without evidence of recurrence in April 2018 completed the validated Dumping Symptom Rating Scale and health-related quality of life questionnaires. Compound dumping symptom score was created by combining the individual scores for severity and frequency for each symptom. RESULTS In total, 171 patients who underwent esophagectomy 1995-2017 responded to the questionnaires, corresponding to a response rate of 77.0%. Median age was 66 years and median time from operation to survey was 5.5 years. Absent or mild problems in all nine dumping symptoms were reported by 94 (59.5%) patients; 19 (12.0%) patients reported moderate or severe problems in at least three symptoms, the most common being postprandial "need to lie down," "diarrhea," and "stomach cramps." Increasing compound dumping symptom score was associated with significantly decreased function scores in all aspects of health-related quality of life except physical functioning (P < 0.005). CONCLUSIONS Esophagectomy has the potential to change long-term eating patterns; however, the majority of patients in the study did not have severe postoperative dumping symptoms. On the other hand, moderate-to-severe dumping symptoms, which were reported by 12% of patients in this study, were strongly associated with decreased health-related quality of life.
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Affiliation(s)
- F. Klevebro
- Department of Thoracic Surgery, Virginia Mason Medical Center, 1100 Ninth Ave, Seattle, WA 98101 USA
- Karolinska Institutet, Stockholm, Sweden
| | - P. R. Boshier
- Department of Thoracic Surgery, Virginia Mason Medical Center, 1100 Ninth Ave, Seattle, WA 98101 USA
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - K. V. Savva
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - A. Waller
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - L. Hage
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - M. Ni
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - G. B. Hanna
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - Donald E. Low
- Department of Thoracic Surgery, Virginia Mason Medical Center, 1100 Ninth Ave, Seattle, WA 98101 USA
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Di Paolo M, Hewitt L, Nwankwo E, Ni M, Vidal-Diaz A, Fisher MC, Armstrong-James D, Shah A. Erratum to: A retrospective 'real-world' cohort study of azole therapeutic drug monitoring and evolution of antifungal resistance in cystic fibrosis. JAC Antimicrob Resist 2021; 3:dlab086. [PMID: 34263165 PMCID: PMC8275022 DOI: 10.1093/jacamr/dlab086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Di Paolo M, Hewitt L, Nwankwo E, Ni M, Vidal-Diaz A, Fisher MC, Armstrong-James D, Shah A. A retrospective 'real-world' cohort study of azole therapeutic drug monitoring and evolution of antifungal resistance in cystic fibrosis. JAC Antimicrob Resist 2021; 3:dlab026. [PMID: 34223100 PMCID: PMC8210303 DOI: 10.1093/jacamr/dlab026] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 02/11/2021] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Individuals with cystic fibrosis (CF) have an increased susceptibility to fungal infection/allergy, with triazoles often used as first-line therapy. Therapeutic drug monitoring (TDM) is essential due to significant pharmacokinetic variability and the recent emergence of triazole resistance worldwide. OBJECTIVES In this retrospective study we analysed the 'real-world' TDM of azole therapy in a large CF cohort, risk factors for subtherapeutic dosing, and the emergence of azole resistance. METHODS All adults with CF on azole therapy in a large single UK centre were included. Clinical demographics, TDM and microbiology were analysed over a 2 year study period (2015-17) with multivariate logistic regression used to identify risk factors for subtherapeutic dosing. RESULTS 91 adults were treated with azole medication during the study period. A high prevalence of chronic subtherapeutic azole dosing was seen with voriconazole (60.8%) and itraconazole capsule (59.6%) use, representing significant risk factors for subtherapeutic levels. Rapid emergence of azole resistance was additionally seen over the follow-up period with a 21.4% probability of CF patients developing a resistant fungal isolate after 2 years. No significant relationship was found however between subtherapeutic azole dosing and azole resistance emergence. CONCLUSIONS Our study demonstrates a high prevalence of subtherapeutic azole levels in CF adults with increased risk using itraconazole capsules and voriconazole therapy. We show rapid emergence of azole resistance highlighting the need for effective antifungal stewardship. Further large longitudinal studies are needed to understand the effects of antifungal resistance on outcome in CF and the implications of subtherapeutic dosing on resistance evolution.
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Affiliation(s)
- M Di Paolo
- Department of Respiratory Medicine, Royal Brompton and Harefield NHS Foundation Trust, London, UK
| | - L Hewitt
- Department of Respiratory Medicine, Royal Brompton and Harefield NHS Foundation Trust, London, UK
- Faculty of Medicine, Department of Infectious Diseases, Imperial College London, London, UK
| | - E Nwankwo
- Department of Respiratory Medicine, Royal Brompton and Harefield NHS Foundation Trust, London, UK
| | - M Ni
- London In Vitro Diagnostics Collaborative, Department of Surgery and Cancer, Imperial College London, UK
| | - A Vidal-Diaz
- London In Vitro Diagnostics Collaborative, Department of Surgery and Cancer, Imperial College London, UK
| | - M C Fisher
- MRC Centre of Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London, UK
| | - D Armstrong-James
- Department of Respiratory Medicine, Royal Brompton and Harefield NHS Foundation Trust, London, UK
- Faculty of Medicine, Department of Infectious Diseases, Imperial College London, London, UK
| | - A Shah
- Department of Respiratory Medicine, Royal Brompton and Harefield NHS Foundation Trust, London, UK
- MRC Centre of Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London, UK
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Lyu Y, Ni M, Zhai R, Kong F, Du C, Hu C, Ying H. Clinical Characteristics and Prognosis of Elderly Nasopharyngeal Carcinoma Patients Receiving Intensity-Modulated Radiotherapy Only. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Ni M, Adams M, Huddy J, Carr R, Fotheringham I, Wilson C, Tsang M, Hanna G. A multi-centred, prospective, observational study of a first-generation novel human lipase pH test for siting nasogastric feeding tubes in adult patients. Clin Nutr ESPEN 2020. [DOI: 10.1016/j.clnesp.2019.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Ni M, Gu K, Hassan B, Ning D, Zheng Y, Qi Y, Xu Y. Effect of oviposition by Bactrocera dorsalis on the antioxidant activity of orange juice. BRAZ J BIOL 2019; 80:641-647. [PMID: 31644657 DOI: 10.1590/1519-6984.218661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 03/06/2019] [Indexed: 11/22/2022] Open
Abstract
Among fruits and fruit products, oranges and orange juice are the most widely consumed worldwide. However, the effects of pest infestation of oranges on the quality of orange juice are not yet known. To evaluate the effect of the oriental fruit fly Bactrocera dorsalis on the antioxidant activity of orange juice, we measured changes in the vitamin C (Vc) concentration, total phenol content, and antioxidant activity of orange juice after the introduction of fruit fly eggs. Ten days after the eggs were introduced (larvae removed), the concentration of Vc in orange juice was 18.65 µg/mL, which was 9.16 µg/mL lower than that measured in healthy orange juice. In addition, the total phenol content decreased by 46.519 mg Gallic Acid Equivalents (GAE)/g to 9.748 mg GAE/g. Furthermore, the free-radical scavenging activity decreased from 22.297% to 5.393%. Correlation analysis indicated significant correlations between Vc concentration, total phenol content, and antioxidant activity of orange juice after B. dorsalis infestation. The decrease in Vc concentration, total phenol content and free-radical scavenging activity indicated that B. dorsalis changed the quality of orange juice by affecting the antioxidant activity of the juice after the oranges were infested.
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Affiliation(s)
- M Ni
- Department of Entomology, South China Agricultural University, Guangzhou, China
| | - K Gu
- Department of Entomology, South China Agricultural University, Guangzhou, China
| | - B Hassan
- Department of Entomology, South China Agricultural University, Guangzhou, China
| | - D Ning
- Department of Entomology, South China Agricultural University, Guangzhou, China
| | - Y Zheng
- Department of Entomology, South China Agricultural University, Guangzhou, China
| | - Y Qi
- Department of Entomology, South China Agricultural University, Guangzhou, China
| | - Y Xu
- Department of Entomology, South China Agricultural University, Guangzhou, China
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Abstract
Functional gastrointestinal (GI) diseases are common and there are patients who are refractory to medical therapies as not all treatments work in all patients. Consequently, a large number of patients with functional GI diseases use complementary and alternative medicine, such as acupuncture or electroacupuncture (EA). In this issue, Zheng et al. reported interesting results of a multi-center placebo-controlled clinical study on the use of EA for treating refractory functional dyspepsia; another study reported a multi-center clinical trial on EA for chronic functional constipation; Liang et al. studied mechanisms of EA involving enteric nervous system and neurotransmitters in treating constipation in rats. While controversial reports are available in the literature, EA with appropriate methodologies as shown in these recent studies is believed to be effective in treating certain functional GI diseases. In this mini-review, a number of clinical studies, including those included in this issue on the use of EA for treating gastro-esophageal reflux, functional dyspepsia, irritable bowel syndrome, and constipation are reviewed. Some critically important issues, such as the choice of stimulation parameters for EA, the administration frequency of the therapy, and the appropriate choice of placebo for clinical research are also discussed. Mechanisms of action involved in the therapeutic effects of EA for gut dysmotility and future research directions are also presented.
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Affiliation(s)
- J D Z Chen
- Johns Hopkins Center for Neurogastroenterology and Division of Gastroenterology and Hepatology, Baltimore, MD, USA
| | - M Ni
- National Center of Colorectal Diseases, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - J Yin
- Johns Hopkins Center for Neurogastroenterology and Division of Gastroenterology and Hepatology, Baltimore, MD, USA
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15
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Fu J, Yao ZM, Wang Z, Cui G, Ni M, Li X, Chen JY. Surgical treatment of osteoporotic degenerative spinal deformity with expandable pedicle screw fixation: 2-year follow-up clinical study. Orthop Traumatol Surg Res 2018; 104:411-415. [PMID: 29248763 DOI: 10.1016/j.otsr.2017.11.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 08/20/2017] [Accepted: 11/08/2017] [Indexed: 02/02/2023]
Abstract
BACKGROUND Osteoporotic bone offers poor purchase for the instrumentation in patients with degenerative spinal deformity (DSD), which could lead to several complications. Recently, augmentation methods to improve pedicle screw fixation have been proposed. This retrospective study was to investigate the clinical and radiographic outcomes of expandable pedicle screws (EPS) in patients with osteoporotic DSD. HYPOTHESIS Expandable pedicle screws (EPS) provide excellent instrument fixation in patients with osteoporotic DSD, improving radiographic and clinical outcomes. MATERIALS AND METHODS A total of 27 (6 males and 21 females) DSD patients who underwent orthopedics operation with EPS were retrospectively studied. Full-length standing spinal radiographs were obtained in all patients pre- and postoperatively and again at the two-year follow-up. The functional evaluations before operation and at two-year follow-up were graded with Scoliosis Research Society outcomes instrument-22 (SRS-22) and Oswestry Disability Index (ODI) scoring system. RESULTS All patients obtained good corrective outcomes on spinal deformity. The preoperative ODI score was 36.7% and reduced to 11.9% at two-year follow-up (p=0.0000). Before operation, the SRS-22 function, pain, appearance and mental scores were 2.7±0.4, 3±0.6, 2.7±0.5 and 2.9±0.6, respectively. The scores at two-year follow-up were significantly improved to 3.8±0.7, 4.2±0.6, 4.3±0.6 and 4.4±0.7, respectively (p=0.0000). The SRS-22 satisfaction score was 4.6±0.4 at two-year follow-up. No instances of screw breakage, loosening or pullout in any patient at follow-up. DISCUSSION EPS provides excellent instrument fixation in patients with osteoporotic DSD, improving radiographic and clinical outcomes at two years' follow-up. TYPE OF STUDY Retrospective case series study. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- J Fu
- Department of Orthopaedics, Chinese People's Liberation Army General Hospital (301 Hospital), 28, Fuxing Road, 100853 Beijing, PR China
| | - Z M Yao
- Department of Orthopaedics, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, PR China
| | - Z Wang
- Department of Orthopaedics, Chinese People's Liberation Army General Hospital (301 Hospital), 28, Fuxing Road, 100853 Beijing, PR China
| | - G Cui
- Department of Orthopaedics, Chinese People's Liberation Army General Hospital (301 Hospital), 28, Fuxing Road, 100853 Beijing, PR China
| | - M Ni
- Department of Orthopaedics, Chinese People's Liberation Army General Hospital (301 Hospital), 28, Fuxing Road, 100853 Beijing, PR China
| | - X Li
- Department of Orthopaedics, Chinese People's Liberation Army General Hospital (301 Hospital), 28, Fuxing Road, 100853 Beijing, PR China
| | - J Y Chen
- Department of Orthopaedics, Chinese People's Liberation Army General Hospital (301 Hospital), 28, Fuxing Road, 100853 Beijing, PR China.
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Affiliation(s)
- Q. Xie
- PET-CT center; Anhui Provincial Hospital; Hefei Anhui China
| | - M. Ni
- PET-CT center; Anhui Provincial Hospital; Hefei Anhui China
| | - S-C. Wang
- PET-CT center; Anhui Provincial Hospital; Hefei Anhui China
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17
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Markar SR, Noordman BJ, Mackenzie H, Findlay JM, Boshier PR, Ni M, Steyerberg EW, van der Gaast A, Hulshof MCCM, Maynard N, van Berge Henegouwen MI, Wijnhoven BPL, Reynolds JV, Van Lanschot JJB, Hanna GB. Multimodality treatment for esophageal adenocarcinoma: multi-center propensity-score matched study. Ann Oncol 2017; 28:519-527. [PMID: 28039180 PMCID: PMC5391716 DOI: 10.1093/annonc/mdw560] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Background The primary aim of this study was to compare survival from neoadjuvant chemoradiotherapy plus surgery (NCRS) versus neoadjuvant chemotherapy plus surgery (NCS) for the treatment of esophageal or junctional adenocarcinoma. The secondary aims were to compare pathological effects, short-term mortality and morbidity, and to evaluate the effect of lymph node harvest upon survival in both treatment groups. Methods Data were collected from 10 European centers from 2001 to 2012. Six hundred and eight patients with stage II or III oesophageal or oesophago-gastric junctional adenocarcinoma were included; 301 in the NCRS group and 307 in the NCS group. Propensity score matching and Cox regression analyses were used to compensate for differences in baseline characteristics. Results NCRS resulted in significant pathological benefits with more ypT0 (26.7% versus 5%; P < 0.001), more ypN0 (63.3% versus 32.1%; P < 0.001), and reduced R1/2 resection margins (7.7% versus 21.8%; P < 0.001). Analysis of short-term outcomes showed no statistically significant differences in 30-day or 90-day mortality, but increased incidence of anastomotic leak (23.1% versus 6.8%; P < 0.001) in NCRS patients. There were no statistically significant differences between the groups in 3-year overall survival (57.9% versus 53.4%; Hazard Ratio (HR)= 0.89, 95%C.I. 0.67-1.17, P = 0.391) nor disease-free survival (52.9% versus 48.9%; HR = 0.90, 95%C.I. 0.69-1.18, P = 0.443). The pattern of recurrence was also similar (P = 0.660). There was a higher lymph node harvest in the NCS group (27 versus 14; P < 0.001), which was significantly associated with a lower recurrence rate and improved disease free survival within the NCS group. Conclusion The survival differences between NCRS and NCS maybe modest, if present at all, for the treatment of locally advanced esophageal or junctional adenocarcinoma. Future large-scale randomized trials must control and monitor indicators of the quality of surgery, as the extent of lymphadenectomy appears to influence prognosis in patients treated with NCS, from this large multi-center European study.
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Affiliation(s)
- S R Markar
- Department of Surgery & Cancer, Imperial College London, London, UK
| | - B J Noordman
- Department of Surgery, Erasmus MC-University Medical Centre, Rotterdam, Netherlands
| | - H Mackenzie
- Department of Surgery & Cancer, Imperial College London, London, UK
| | - J M Findlay
- Oxford Oesophagogastric Centre, Oxford University Hospitals, Oxford, UK
| | - P R Boshier
- Department of Surgery & Cancer, Imperial College London, London, UK
| | - M Ni
- Department of Surgery & Cancer, Imperial College London, London, UK
| | - E W Steyerberg
- Centre for Medical Decision Sciences, Department of Public Health
| | - A van der Gaast
- Department of Medical Oncology, Erasmus MC-University Medical Centre, Rotterdam
| | - M C C M Hulshof
- Department of Radiation Oncology, Academic Medical Centre, Amsterdam
| | - N Maynard
- Oxford Oesophagogastric Centre, Oxford University Hospitals, Oxford, UK
| | | | - B P L Wijnhoven
- Department of Surgery, Erasmus MC-University Medical Centre, Rotterdam, Netherlands
| | - J V Reynolds
- Department of Surgery, Trinity College Dublin and St James's Hospital, Dublin, Ireland
| | - J J B Van Lanschot
- Department of Surgery, Erasmus MC-University Medical Centre, Rotterdam, Netherlands
| | - G B Hanna
- Department of Surgery & Cancer, Imperial College London, London, UK
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18
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Li X, Ni M, Li H, Song JL, Song XG, Fu J, Liu K, Yu BZ, Chen JY. [Two-stage total hip arthroplasty using an antibiotic-loaded cement spacer for infected internal fixation of hip fractures]. Zhonghua Yi Xue Za Zhi 2017; 97:2918-2922. [PMID: 29050162 DOI: 10.3760/cma.j.issn.0376-2491.2017.37.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the application and clinical results of two-stage total hip arthroplasty in the treatment of the deep hip infection following the internal fixation of hip fractures. Methods: From May 2007 to November 2014, 21 patients with active hip infection secondary to internal fixation of hip fractures were treated with two-stage total hip arthroplasty using a temporary antibiotic-loaded cement spacers. Of 21 cases, 15 were males and 6 were females, aged from 27 to 64 years (mean, 45); there are 18 cases of femoral neck fractures and 3 cases of intertrochanteric fractures. The serologic examination and X-ray were taken at 1 month, 3 months, 6 months, 12 months and annually thereafter post-operatively to evaluate the clinical results and prosthesis status. Harris hip score system was used to evaluate the joint function. Results: All patients were successfully treated with two stage operations under general anesthesia. The operational interval was 12-44 weeks (mean, 21) and 1 spacer breakage. For the arthroplasty, cementless components were used in 20 cases and cemented component was use in 1 case. The patients were followed up 25-102 months ( mean, 55 ) and infections were eradicated in all hips. The Harris hip score was improved from 23.24±11.81 pre-operatively to 90.24±3.92 post-operatively and the difference was statistically significant (P<0.05). According to this scoring criteria, the excellent and good rate reached up to 95%. At latest fellow-up, the location of prosthesis were well and the function of hip joint was satisfied. All cases had no dislocation, periprosthetic fracture, ectopic ossification or any other complications at the latest fellow-up. Conclusion: By means of an antibiotic-loaded cement spacer, two-stage total hip arthroplasty is an effective salvage procedure eradicating infection and providing functional improvement to the infected internal fixation of hip fractures. The early and mid-term clinical effects are satisfied.
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Affiliation(s)
- X Li
- Department of Orthopedics, General Hospital of Chinese PLA, Beijing 100853, China
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Dang Z, Fu Y, Duo H, Fan H, Qiao Z, Guo Z, Feng K, Chui W, Shen X, Geng Qiu J, Ni M, He S, Zhao H, Peng M, Xiao N, Nonaka N, Nasu T, Huang F, Oku Y, Hayashimoto N, Hu W, Li W. An epidemiological survey of echinococcosis in intermediate and definitive hosts in Qinghai Province, China. Trop Biomed 2017; 34:483-490. [PMID: 33593033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In order to understand the epidemiological status of alveolar and cystic echinococcosis in intermediate and definitive hosts in Qinghai Province, China, during the period 2007-2011, we investigated the infection in humans and animals, including yaks, Tibetan sheep, Tibetan dogs, and wild foxes distributed in different counties around the province. Sera from local residents were examined using a rapid serodiagnostic kit to detect specific antibodies against Echinococcus. Seropositive samples were confirmed with B-scan ultrasonography and X-ray examinations. Yaks and Tibetan sheep were checked at slaughterhouses, and cysts and suspicious lesions were collected for analysis. A rapid diagnostic strip was used to detect Echinococcus adults in Tibetan dogs. Positive dogs were dewormed and the parasites collected. Wild foxes were trapped and necropsies performed with particular attention to the intestine. Forty-eight of 735 (6.4%) humans tested were positive and 475 of 854 (55.6%) Tibetan sheep and 85 of 352 (24.15%) yaks were infected with Echinococcus. Across different counties, 214 of 948 (22.57%) Tibetan dogs were positive, and five of 36 (13.9%) wild foxes were infected with Echinococcus. Molecular studies showed that all the infections detected in humans, domestic yaks, and Tibetan sheep were the G1 genotype (E. granulosus), whereas the parasites from Tibetan foxes and Tibetan dogs were E. shiquicus and E. multilocularis, respectively. In conclusion, Echinococcosis is hyperendemic in Qinghai Province in both its intermediate and definitive hosts and the G1 genotype of cystic Echinococcus is the dominant strain.
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Affiliation(s)
- Z Dang
- Key Laboratory on Biology of Parasite and Vector, Ministry of Health, Shanghai, China; National Center for International Research on Tropical Diseases, Shanghai, China; WHO Collaborating Center for Tropical Diseases, Shanghai, China; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, China
| | - Y Fu
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - H Duo
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - H Fan
- Affiliated Hospital of Qinghai University, Xining 810016, China
| | - Z Qiao
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - Z Guo
- Key Laboratory on Biology of Parasite and Vector, Ministry of Health, Shanghai, China; National Center for International Research on Tropical Diseases, Shanghai, China; WHO Collaborating Center for Tropical Diseases, Shanghai, China; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, China
- Affiliated Hospital of Qinghai University, Xining 810016, China
| | - K Feng
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
- Laboratory of Veterinary Parasitic Diseases, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - W Chui
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - X Shen
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - J Geng Qiu
- Zhen Qin Township Veterinary Station, Chengduo 815100, China
| | - M Ni
- Haiyan Veterinary Stations, Haiyan 812200, China
| | - S He
- Haiyan Veterinary Stations, Haiyan 812200, China
| | - H Zhao
- Medical College of Qinghai University, Xining 810016, China
| | - M Peng
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - N Xiao
- Key Laboratory on Biology of Parasite and Vector, Ministry of Health, Shanghai, China; National Center for International Research on Tropical Diseases, Shanghai, China; WHO Collaborating Center for Tropical Diseases, Shanghai, China; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, China
| | - N Nonaka
- Laboratory of Veterinary Parasitic Diseases, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - T Nasu
- Laboratory of Veterinary Parasitic Diseases, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - F Huang
- Parasitology Laboratory, School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - Y Oku
- Parasitology Laboratory, School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - N Hayashimoto
- ICLAS Monitoring Center, Central Institute for Experimental Animals, 3-25-12 Tonomachi, Kawasaki, Kanagawa 210-0821, Japan
| | - W Hu
- Key Laboratory on Biology of Parasite and Vector, Ministry of Health, Shanghai, China; National Center for International Research on Tropical Diseases, Shanghai, China; WHO Collaborating Center for Tropical Diseases, Shanghai, China; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, China
| | - W Li
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
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Tang B, Liu C, Zhang QM, Ni M. Decreased expression of miR-490-3p in osteosarcoma and its clinical significance. Eur Rev Med Pharmacol Sci 2017; 21:246-251. [PMID: 28165565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE Increasing evidence has revealed that miRNAs play a key role in the development and progression of tumor and are being explored as a prognostic biomarker. The aim of this study was to investigate the clinical significance of miR-490-3p expression in osteosarcoma. PATIENTS AND METHODS Quantitative real-time PCR (qRT-PCR) was used to evaluate miR-490-3p level in osteosarcoma tissues. We also analyzed the correlations between the expression level of miR-490-3p and the clinical characteristics in cases of osteosarcoma. Also, Kaplan-Meier curve and the log-rank test were conducted to detect the prognostic value of miR-490-3p. Finally, univariable and multivariable Cox regression analyses were used to evaluate independent prognostic factors. RESULTS MiR-490-3p expression level was significantly downregulated in osteosarcoma tissues in comparison with noncancerous bone tissues. Moreover, low miR-490-3p expression was significantly associated with distant metastasis, advanced clinical stage and poor overall survival and relapse-free survival. Univariate and multivariate analysis results indicated that miR-490-3p was an independent prognostic factor in osteosarcoma. CONCLUSIONS Our results showed that miR-490-3p plays critical roles in osteosarcoma progression and serves as a novel prognostic indicator and a potential therapeutic target for osteosarcoma.
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Affiliation(s)
- B Tang
- Department of Orthopedics, Tai'an City Central Hospital, Tai'an, Shandong, China.
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21
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Yuan Y, Zhang GQ, Chai W, Ni M, Xu C, Chen JY. Silencing of microRNA-138-5p promotes IL-1β-induced cartilage degradation in human chondrocytes by targeting FOXC1: miR-138 promotes cartilage degradation. Bone Joint Res 2016; 5:523-530. [PMID: 27799147 PMCID: PMC5108353 DOI: 10.1302/2046-3758.510.bjr-2016-0074.r2] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 08/08/2016] [Indexed: 12/03/2022] Open
Abstract
Objectives Osteoarthritis (OA) is characterised by articular cartilage degradation. MicroRNAs (miRNAs) have been identified in the development of OA. The purpose of our study was to explore the functional role and underlying mechanism of miR-138-5p in interleukin-1 beta (IL-1β)-induced extracellular matrix (ECM) degradation of OA cartilage. Materials and Methods Human articular cartilage was obtained from patients with and without OA, and chondrocytes were isolated and stimulated by IL-1β. The expression levels of miR-138-5p in cartilage and chondrocytes were both determined. After transfection with miR-138-5p mimics, allele-specific oligonucleotide (ASO)-miR-138-5p, or their negative controls, the messenger RNA (mRNA) levels of aggrecan (ACAN), collagen type II and alpha 1 (COL2A1), the protein levels of glycosaminoglycans (GAGs), and both the mRNA and protein levels of matrix metalloproteinase (MMP)-13 were evaluated. Luciferase reporter assay, quantitative real-time polymerase chain reaction (qRT-PCR), and Western blot were performed to explore whether Forkhead Box C1 (FOCX1) was a target of miR-138-5p. Further, we co-transfected OA chondrocytes with miR-138-5p mimics and pcDNA3.1 (+)-FOXC1 and then stimulated with IL-1β to determine whether miR-138-5p-mediated IL-1β-induced cartilage matrix degradation resulted from targeting FOXC1. Results MiR-138-5p was significantly increased in OA cartilage and in chondrocytes in response to IL-1β-stimulation. Overexpression of miR-138-5p significantly increased the IL-1β-induced downregulation of COL2A1, ACAN, and GAGs, and increased the IL-1β-induced over expression of MMP-13.We found that FOXC1 is directly regulated by miR-138-5p. Additionally, co-transfection with miR-138-5p mimics and pcDNA3.1 (+)-FOXC1 resulted in higher levels of COL2A1, ACAN, and GAGs, but lower levels of MMP-13. Conclusion miR-138-5p promotes IL-1β-induced cartilage degradation in human chondrocytes, possibly by targeting FOXC1. Cite this article: Y. Yuan, G. Q. Zhang, W. Chai,M. Ni, C. Xu, J. Y. Chen. Silencing of microRNA-138-5p promotes IL-1β-induced cartilage degradation in human chondrocytes by targeting FOXC1: miR-138 promotes cartilage degradation. Bone Joint Res 2016;5:523–530. DOI: 10.1302/2046-3758.510.BJR-2016-0074.R2.
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Affiliation(s)
- Y Yuan
- Department of Orthopaedics, Chinese PLA General Hospital, No.28 Fuxing Road,Haidian District,Beijing 100853,China and, Jinan Military General Hospital, No.25, Shifan Road, Tianqiao District, Jinan 250031, Shandong, China
| | - G Q Zhang
- Department of Orthopaedics, Chinese PLA General Hospital, General Hospital, No.28 Fuxing Road, Haidian District, Beijing 100853, China
| | - W Chai
- Department of Orthopaedics, Chinese PLA General Hospital, General Hospital, No.28 Fuxing Road, Haidian District, Beijing 100853, China
| | - M Ni
- Department of Orthopaedics, Chinese PLA General Hospital, General Hospital, No.28 Fuxing Road, Haidian District, Beijing 100853, China
| | - C Xu
- Department of Orthopaedics, Chinese PLA General Hospital, General Hospital, No.28 Fuxing Road, Haidian District, Beijing 100853, China
| | - J Y Chen
- Department of Orthopaedics, Chinese PLA General Hospital, General Hospital, No.28 Fuxing Road, Haidian District, Beijing 100853, China
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Abstract
Silkworm (Bombyx mori) is an important economic insect with a fat body that plays a crucial role in the storage and transfer of nutrients. It is also known that TiO2 nanoparticles (NPs) can improve feed efficiency and promote silk protein synthesis in the silkworm. In this study, we profiled gene expression in the silkworm fat body after TiO2 NP treatment, validated the major RNA-seq findings, and determined the contents of trehalose and triglyceride, the activity of lipase, and the amount of total proteins. RNA-seq analysis revealed that TiO2 NP treatment caused significant expression changes in 341 genes (P≤0.01), 138 of which were upregulated while the other 203 were downregulated. The expression levels of two target genes in the insulin signaling pathway and two protein metabolism-related target genes, three lipid metabolism-associated target genes, two carbohydrate metabolism related target genes and expression levels of seven heat shock protein genes were increased, and that of threonine dehydratase gene and fatty acid transport protein gene were decreased. The RNA-seq results of 16 genes were validated by quantitative real-time PCR. The lipase activity, content of trehalose, and amount of total proteins were elevated by 3.86-fold, 1.34-fold, and 1.21-fold, respectively, and the content of triglyceride was decreased by 0.94-fold after TiO2 NP treatment. These results indicated that TiO2 NPs activated the insulin signaling pathway, promoted the metabolism of protein, fat, and carbohydrate, and improved nutrition metabolism. Our study provides new support for the understanding of the beneficial effect of TiO2 NPs on silkworm nutrient metabolism. Summary: Our study indicates that TiO2 nanoparticles promote nutrient metabolism in the fat body of silkworms, and provide a reference for studies investigating the biological function of TiO2 nanoparticles.
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Affiliation(s)
- J H Tian
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, China
| | - J S Hu
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, China
| | - F C Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, China
| | - M Ni
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, China
| | - Y Y Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, China
| | - B B Wang
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, China
| | - K Z Xu
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, China
| | - W D Shen
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, China
| | - B Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, China
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Hu JS, Li FC, Xu KZ, Ni M, Wang BB, Tian JH, Li YY, Shen WD, Li B. Mechanisms of TiO2 NPs-induced phoxim metabolism in silkworm (Bombyx mori) fat body. Pestic Biochem Physiol 2016; 129:89-94. [PMID: 27017887 DOI: 10.1016/j.pestbp.2015.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 11/06/2015] [Accepted: 11/09/2015] [Indexed: 05/28/2023]
Abstract
Silkworm is an important economic insect. Abuse of organophosphorus pesticides in recent years often leads to poisoning of silkworms, which significantly affects sericulture development by reducing silk production. Previous studies have shown that TiO2 NPs can effectively mitigate the damages caused by organophosphorus pesticides in silk glands and nerve tissues. The fat body is an important metabolic detoxification organ of silkworms, but it is unknown whether TiO2 NPs affect pesticide metabolism in fat body. In this study, we characterized the transcription of antioxidant genes and enzyme activity in fat body after TiO2 NPs and phoxim treatments using transcriptome sequencing, real-time PCR, and enzyme activity assay. Transcriptome sequencing detected 10 720, 10 641, 10 403, and 10 489 genes for control group, TiO2 NPs group, phoxim group, and TiO2 NPs+phoxim group, respectively. The TiO2 NPs+phoxim group had 705 genes with significantly differential expression (FDR<0.001), among which the antioxidant genes thioredoxin reductase 1 and glutathione S-transferase omega 3 were significantly upregulated. In phoxim group, the expression levels of superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase delta (GSTd), and thioredoxin peroxidase (TPx) were increased by 1.365 -fold, 1.335 -fold, 1.642 -fold, and 1.765 -fold, respectively. The level changes of SOD, CAT, GSTd, and TPx were validated by real time PCR. The contents of reactive oxygen species (ROS), malondialdehyde (MDA), and hydrogen peroxide (H2O2) were increased by 1.598 -fold, 1.946 -fold, and 1.506 -fold, respectively, indicating that TiO2 NPs treatment can relieve phoxim-induced oxidative stress. To clarify the mechanism of TiO2 NPs's effect, the transcription levels of P450 gene family were measured for the TiO2 NPs+phoxim group; the expression levels of CYP4M5, CYP6AB4, CYP6A8, and CYP9G3 were elevated by 2.784 -fold, 3.047 -fold, 2.254 -fold, and 4.253 -fold, respectively, suggesting that high expression of P450 family genes can enhance the metabolism of phoxim in the fat body. The results of this study indicated that TiO2 NPs treatment promoted the transcriptional expression of the P450 family genes to improve the fat body's ability to metabolize phoxim and reduce phoxim-induced oxidative stress. This may be the main mechanism of TiO2 NPs' mitigation of phoxim-induced damages in the fat body.
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Affiliation(s)
- J S Hu
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - F C Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - K Z Xu
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - M Ni
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - B B Wang
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - J H Tian
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - Y Y Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - W D Shen
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China; National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - B Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China; National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, PR China.
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Wang BB, Li FC, Xu KZ, Ni M, Hu JS, Tian JH, Li YY, Shen WD, Li B. Effects of mutations on the structure and function of silkworm type 1 acetylcholinesterase. Pestic Biochem Physiol 2016; 129:1-6. [PMID: 27017875 DOI: 10.1016/j.pestbp.2015.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 11/09/2015] [Accepted: 11/09/2015] [Indexed: 06/05/2023]
Abstract
AChE is the target of organophosphate (OP) and carbamate (CB) pesticides, and mutations in the gene can significantly reduce insects' sensitivity to these pesticides. Bombyx mori is highly sensitive to pesticides. To investigate the effects of mutations on AChE1 structure and function, we used a prokaryotic system to express B.mori wild type AChE1 (wAChE1) and mutant AChE1 (mAChE1) in this study. Active AChE1 proteins were obtained after refolding and purification, and wAChE1 and mAChE1 had similar activities. After incubation with 10(-6)M physostigmine and 10(-3)mg/mL phoxim, the remaining enzyme activity of mAChE1 was 4.42% and 8.86% higher than that of wAChE1's, respectively. Three-dimensional analysis of mutation AChE1 (mAChE1) revealed that the Ser and Ala side chains extended toward the central part of S285 with distances of just 2.80Å and 3.68Å, respectively, which changed the spatial structure of the active center and reduced its sensitivity to pesticides. These results indicated that the mutations altered the 3D structure of AChE1, which may affect the binding of physostigmine and phoxim to the serine residue at the active center, leading to reduced sensitivity. Our study helps understand the relationship between AChE1 mutations and pesticide resistance and provides a new direction for the cultivation of new pesticide-resistant varieties of B.mori.
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Affiliation(s)
- B B Wang
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - F C Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - K Z Xu
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - M Ni
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - J S Hu
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - J H Tian
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - Y Y Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - W D Shen
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China; National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - B Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China; National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, PR China.
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Abstract
Coronary artery disease (CAD) represents a leading cause of morbidity and mortality worldwide, and genetic factors contribute to the development of this disease. We conducted a case-control study to assess the association between interleukin 17A (IL17A) rs2275913 and rs3748067 polymorphisms and development of CAD. A total of 372 CAD patients and 372 healthy controls were recruited in our investigation between January 2013 and December 2014. Genotyping of IL17A rs2275913 and rs3748067 was carried out using polymerase chain reaction combined with restriction fragment length polymorphism. Logistic regression analysis revealed that CC [odds ratio (OR) = 3.81, 95% confidence interval (CI) = 2.11-7.16] and TC+CC (OR = 1.54, 95%CI = 1.11-2.14) rs3748067 genotypes were associated with an increased risk of CAD compared to the TT variant. Individuals carrying the TC+CC genotype were more likely to have a higher risk of CAD if they were smokers, with an adjusted OR (and 95%CI) of 2.20 (1.31-3.71). In conclusion, we suggest that the CC and TC+CC genotypes of rs3748067 are connected with increased risk of CAD in comparison to the wide-type genotype, particularly in smokers.
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Affiliation(s)
- X S Zheng
- Intensive Care Unit, Nanyang City Center Hospital, Nanyang, China
| | - S Wang
- Department of Gastroenterology, Nanyang City Center Hospital, Nanyang, China
| | - M Ni
- Department of Endocrinology, Nanyang City Center Hospital, Nanyang, China
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Zhang J, Jiang W, Zhou Q, Ni M, Liu S, Zhu P, Wu Q, Li W, Zhang M, Xia X. CAG-repeat polymorphisms in the polymerase γ gene and male infertility: a meta-analysis. Andrologia 2016; 48:882-889. [PMID: 26790834 DOI: 10.1111/and.12526] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/05/2015] [Indexed: 11/27/2022] Open
Affiliation(s)
- J. Zhang
- Department of Reproduction and Genetics; Institute of Laboratory Medicine; Jinling Hospital; Nanjing University School of Medicine; Nanjing China
| | - W. Jiang
- Department of Reproduction and Genetics; Institute of Laboratory Medicine; Jinling Hospital; Nanjing University School of Medicine; Nanjing China
| | - Q. Zhou
- Department of Reproduction and Genetics; Institute of Laboratory Medicine; Jinling Hospital; Nanjing University School of Medicine; Nanjing China
| | - M. Ni
- Department of Reproduction and Genetics; Institute of Laboratory Medicine; Jinling Hospital; Nanjing University School of Medicine; Nanjing China
| | - S. Liu
- Department of Reproduction and Genetics; Institute of Laboratory Medicine; Jinling Hospital; Nanjing University School of Medicine; Nanjing China
| | - P. Zhu
- Department of Reproduction and Genetics; Institute of Laboratory Medicine; Jinling Hospital; Nanjing University School of Medicine; Nanjing China
| | - Q. Wu
- Department of Reproduction and Genetics; Institute of Laboratory Medicine; Jinling Hospital; Nanjing University School of Medicine; Nanjing China
| | - W. Li
- Department of Reproduction and Genetics; Institute of Laboratory Medicine; Jinling Hospital; Nanjing University School of Medicine; Nanjing China
| | - M. Zhang
- Department of Reproduction and Genetics; Institute of Laboratory Medicine; Jinling Hospital; Nanjing University School of Medicine; Nanjing China
| | - X. Xia
- Department of Reproduction and Genetics; Institute of Laboratory Medicine; Jinling Hospital; Nanjing University School of Medicine; Nanjing China
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Mackenzie H, Markar SR, Askari A, Ni M, Faiz O, Hanna GB. National proficiency-gain curves for minimally invasive gastrointestinal cancer surgery. Br J Surg 2015; 103:88-96. [PMID: 26578089 DOI: 10.1002/bjs.9963] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 08/11/2015] [Accepted: 09/04/2015] [Indexed: 12/21/2022]
Abstract
BACKGROUND Minimal access surgery for gastrointestinal cancer has short-term benefits but is associated with a proficiency-gain curve. The aim of this study was to define national proficiency-gain curves for minimal access colorectal and oesophagogastric surgery, and to determine the impact on clinical outcomes. METHODS All adult patients undergoing minimal access oesophageal, colonic and rectal surgery between 2002 and 2012 were identified from the Hospital Episode Statistics database. Proficiency-gain curves were created using risk-adjusted cumulative sum analysis. Change points were identified, and bootstrapping was performed with 1000 iterations to identify a confidence level. The primary outcome was 30-day mortality; secondary outcomes were 90-day mortality, reintervention, conversion and length of hospital stay. RESULTS Some 1696, 15 008 and 16 701 minimal access oesophageal, rectal and colonic cancer resections were performed during the study period. The change point in the proficiency-gain curve for 30-day mortality for oesophageal, rectal and colonic surgery was 19 (confidence level 98·4 per cent), 20 (99·2 per cent) and three (99·5 per cent) procedures; the mortality rate fell from 4·0 to 2·0 per cent (relative risk reduction (RRR) 0·50, P = 0·033), from 2·1 to 1·2 per cent (RRR 0·43, P < 0·001) and from 2·4 to 1·8 per cent (RRR 0·25, P = 0·058) respectively. The change point in the proficiency-gain curve for reintervention in oesophageal, rectal and colonic resection was 19 (98·1 per cent), 32 (99·5 per cent) and 26 (99·2 per cent) procedures respectively. There were also significant proficiency-gain curves for 90-day mortality, conversion and length of stay. CONCLUSION The introduction of minimal access gastrointestinal cancer surgery has been associated with a proficiency-gain curve for mortality and major morbidity at a national level. Unnecessary patient harm should be avoided by appropriate training and monitoring of new surgical techniques.
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Affiliation(s)
- H Mackenzie
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - S R Markar
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - A Askari
- St Mark's Hospital and Academic Institute, Harrow, UK
| | - M Ni
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - O Faiz
- Department of Surgery and Cancer, Imperial College London, London, UK.,St Mark's Hospital and Academic Institute, Harrow, UK
| | - G B Hanna
- Department of Surgery and Cancer, Imperial College London, London, UK
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Deng YP, Zhao T, Huang F, Ni M, Li DJ, Jiang GJ, Shen FM. Fenofibrate Improves the Impaired Endothelial Progenitor Cell Function Through Deregulating Nalp3 Inflammasome Activity In Diabetic Mice. Clin Ther 2015. [DOI: 10.1016/j.clinthera.2015.05.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Mackenzie H, Ni M, Miskovic D, Motson RW, Gudgeon M, Khan Z, Longman R, Coleman MG, Hanna GB. Clinical validity of consultant technical skills assessment in the English National Training Programme for Laparoscopic Colorectal Surgery. Br J Surg 2015; 102:991-7. [DOI: 10.1002/bjs.9828] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Revised: 03/10/2015] [Accepted: 03/11/2015] [Indexed: 11/08/2022]
Abstract
Abstract
Background
The English National Training Programme for Laparoscopic Colorectal Surgery introduced a validated objective competency assessment tool to accredit surgeons before independent practice. The aim of this study was to determine whether this technical skills assessment predicted clinical outcomes.
Methods
Established consultants, training in laparoscopic colorectal surgery, were asked to submit two operative videos for evaluation by two blinded assessors using the competency assessment tool. A mark of 2·7 or above was considered a pass. Clinical and oncological outcomes were compared above and below this mark, including regression analysis.
Results
Eighty-five consultant surgeons submitted 171 videos. Of these, 44 (25·7 per cent) were in the fail group (score less than 2·7). This low scoring group had more postoperative morbidity (25 versus 8·7 per cent; P = 0·005), including surgical complications (18 versus 6·3 per cent; P = 0·020) and fewer lymph nodes harvested (median 13 versus 18; P = 0·004). A score of less than 2·7 was an independent predictor of surgical complication, lymph node yield and distal resection margin clearance. Consultants with higher scores had performed similar numbers of laparoscopic colorectal operations (median 37 versus 40; P = 0·373) but more structured training operations (18 versus 9; P < 0·001).
Conclusion
An objective technical skills assessment provided a discriminatory tool with which to accredit laparoscopic colorectal surgeons.
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Affiliation(s)
- H Mackenzie
- Department of Surgery and Cancer, Imperial College, London, UK
| | - M Ni
- Department of Surgery and Cancer, Imperial College, London, UK
| | - D Miskovic
- John Goligher Colorectal Unit, Leeds Teaching Hospitals, Leeds, UK
| | - R W Motson
- ICENI Centre, Colchester Hospital, Colchester, UK
| | - M Gudgeon
- Colorectal Unit, Frimley Park Hospital, Frimley, UK
| | - Z Khan
- Colorectal Unit, Queen Elizabeth Hospital, King's Lynn, UK
| | - R Longman
- Colorectal Unit, Bristol Royal Infirmary, Bristol, UK
| | - M G Coleman
- Colorectal Unit, Derriford Hospital, Plymouth, UK
| | - G B Hanna
- Department of Surgery and Cancer, Imperial College, London, UK
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30
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Gu ZY, Li FC, Wang BB, Xu KZ, Ni M, Zhang H, Shen WD, Li B. Differentially expressed genes in the fat body of Bombyx mori in response to phoxim insecticide. Pestic Biochem Physiol 2015; 117:47-53. [PMID: 25619911 DOI: 10.1016/j.pestbp.2014.10.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 08/29/2014] [Accepted: 10/07/2014] [Indexed: 06/04/2023]
Abstract
The silkworm, Bombyx mori, is an economically important insect. However, poisoning of silkworms by organophosphate pesticides causes tremendous loss to the sericulture. The fat body is the major tissue involved in detoxification and produces antimicrobial peptides and regulates hormones. In this study, a microarray system comprising 22,987 oligonucluotide 70-mer probes was employed to examine differentially expressed genes in the fat body of B. mori exposed to phoxim insecticide. The results showed that a total of 774 genes were differentially expressed upon phoxim exposure, including 500 up-regulated genes and 274 down-regulated genes. The expression levels of eight detoxification-related genes were up-regulated upon phoxim exposure, including six cytochrome P450s and two glutathione-S-transferases. It was firstly found that eight antimicrobial peptide genes were down-regulated, which might provide important references for studying the larvae of B. mori become more susceptible to microbial infections after phoxim treatment. In addition, we firstly detected the expression level of metamorphosis-related genes after phoxim exposure, which may lead to impacted reproduction. Our results may facilitate the overall understanding of the molecular mechanism of multiple pathways following exposure to phoxim insecticide in the fat body of B. mori.
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Affiliation(s)
- Z Y Gu
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - F C Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - B B Wang
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - K Z Xu
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - M Ni
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - H Zhang
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - W D Shen
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China; National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, China
| | - B Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, China; National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, China.
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32
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Wyles SM, Miskovic D, Ni M, Kennedy RH, Hanna GB, Coleman MG. 'Trainee' evaluation of the English National Training Programme for laparoscopic colorectal surgery. Colorectal Dis 2012; 14:e352-7. [PMID: 22251877 DOI: 10.1111/j.1463-1318.2012.02948.x] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
AIM The aim of this study was to review trainees' opinions of the training they had received through the National Training Programme (NTP). METHOD An online questionnaire was distributed to NTP trainees who had completed five or more training episodes within the programme. Demographic data were collected. Opinion was given using a five-point Likert scale (1 = strongly disagree, 2 = disagree, 3 = undecided, 4 = agree, 5 = strongly agree). Percentages, mean values and SD were presented. ANOVA and Mann-Whitney U-tests were used to examine the impact of different factors on ratings and the difference between ratings, respectively. RESULTS Fifty-four registered trainees fulfilled the inclusion criteria, and 37 (69% response rate) completed the questionnaire. Teaching sessions were organized using an inreach (11%), in-house (11%), outreach (27%) or combination (51%) system of training. Trainees felt that their trainers seldom cancelled sessions (93%), that it was easy to organize (92%) and consent (100%) the patient, and that their hospital was supportive of training (97%). Trainees stated that overall their trainers were excellent at training (Likert scale = 4.71 ± 0.46) and that they received regular feedback (87%). The only variable to have a significant impact on the level of NTP approval was whether the trainee was able to choose his or her trainer (supportive of NTP, chose trainer P = 0.050; critical of NTP, chose trainer P = 0.020). CONCLUSION The large majority of trainees was highly satisfied with the training received in this innovative programme, irrespective of region or training structure used, thus demonstrating acceptability of the programme in its current form.
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Affiliation(s)
- S M Wyles
- Department of Surgery and Cancer, St Mary's Hospital, Imperial College London, London, UK
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33
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Jia G, Jia W, Ni M, Wan W, Zhou D, Liu W, Zhang J. Microsurgical Strategy and Technique for Preservation of Pituitary Stalk in Giant Pituitary Adenoma. Skull Base Surg 2012. [DOI: 10.1055/s-0032-1314038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Lui PPY, Rui YF, Ni M, Chan KM. Tenogenic differentiation of stem cells for tendon repair-what is the current evidence? J Tissue Eng Regen Med 2011; 5:e144-63. [PMID: 21548133 DOI: 10.1002/term.424] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Accepted: 03/10/2011] [Indexed: 12/30/2022]
Abstract
Tendon/ligament injuries are very common in sports and other rigorous activities. Tendons regenerate and repair slowly and inefficiently in vivo after injury. The limited ability of tendon to self-repair and the general inefficiencies of current treatment regimes have hastened the motivation to develop tissue-engineering strategies for tissue repair. Of particular interest in recent years has been the use of adult mesenchymal stem cells (MSCs) to regenerate functional tendons and ligaments. Different sources of MSCs have been studied for their effects on tendon repair. However, ectopic bone and tumour formation has been reported in some special circumstances after transplantation of MSCs. The induction of MSCs to differentiate into tendon-forming cells in vitro prior to transplantation is a possible approach to avoid ectopic bone and tumour formation while promoting tendon repair. While there are reports about the factors that might promote tenogenic differentiation, the study of tenogenic differentiation is hampered by the lack of definitive biomarkers for tendons. This review aims to summarize the cell sources currently used for tendon repair as well as their advantages and limitations. Factors affecting tenogenic differentiation were summarized. Molecular markers currently used for assessing tenogenic differentiation or neotendon formation are summarized and their advantages and limitations are commented upon. Finally, further directions for promoting and assessing tenogenic differentiation of stem cells for tendon repair are discussed.
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Affiliation(s)
- P P Y Lui
- Department of Orthopaedics and Traumatology, Chinese University of Hong Kong, Hong Kong SAR, China.
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35
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Shao M, Wang X, Ni M, Bibi N, Yuan S, Malik W, Zhang H, Liu Y, Hua S. Regulation of cotton fiber elongation by xyloglucan endotransglycosylase/hydrolase genes. Genet Mol Res 2011; 10:3771-82. [DOI: 10.4238/2011.october.27.1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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37
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Ni M, Leung MKH, Leung DYC. Modeling of Electrochemistry and Heat/Mass Transfer in a Tubular Solid Oxide Steam Electrolyzer for Hydrogen Production. Chem Eng Technol 2008. [DOI: 10.1002/ceat.200800104] [Citation(s) in RCA: 2] [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: 11/08/2022]
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Xie JT, Wang CZ, Ni M, Wu JA, Mehendale SR, Aung HH, Foo A, Yuan CS. American ginseng berry juice intake reduces blood glucose and body weight in ob/ob mice. J Food Sci 2008; 72:S590-4. [PMID: 17995625 DOI: 10.1111/j.1750-3841.2007.00481.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diabetes is a serious chronic metabolic disease and has a significant impact on patients' lives and the health care system. We previously observed that the organic solvent extract of American ginseng berry possessed significant antidiabetic effects in obese diabetic ob/ob mice after intraperitoneal injection. If American ginseng berry is useful as a dietary supplement, simple preparation and oral intake would be a convenient, safe, and practical means for consumers. In this study, the simply prepared berry juice was first analyzed using high-performance liquid chromatography, and then administered orally in the ob/ob mice. The animals received daily berry juice 0.6 mL/kg or vehicle for 10 consecutive days. The results indicated that oral juice administration significantly lowered fasting blood glucose levels, and this effect continued for at least 10 d after cessation of the treatment. Data from intraperitoneal glucose tolerance test demonstrated that there was a notable improvement in glucose tolerance in the juice treated group. In addition, the berry juice significantly reduced body weight. Our data suggest that ginseng berry juice, as a dietary supplement, may have functional efficacy in consumers with diabetes.
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Affiliation(s)
- J T Xie
- Tang Center for Herbal Medicine Research, Committee on Clinical Pharmacology and Pharmacogenomics, and Dept. of Anesthesia & Critical Care, The Pritzker School of Medicine, Univ. of Chicago, Chicago, IL 60637, USA
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Aung H, Wang C, Ni M, Fishbein A, Mehendale S, Xie J, Shoyama A, Yuan C. Crocin from Crocus sativus possesses significant anti-proliferation effects on human colorectal cancer cells. Exp Oncol 2007; 29:175-180. [PMID: 18004240 PMCID: PMC2658895] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
AIM To investigate the anti-proliferative effects of Crocus sativus extract and its major constituent, crocin, on three colorectal cancer cell lines (HCT-116, SW-480, and HT-29). The cell growth inhibition effect was compared to that of non-small cell lung cancer (NSCLC) cells. In addition, Crocus sativus' effect on non-cancer cells was evaluated. METHODS Using high performance liquid chromatography (HPLC), the purity of crocin and the content of crocin extract were determined. Anti-proliferative effects of Crocus sativus extract and crocin on test cells was evaluated by MTS assay. RESULTS The purity of crocin was found to be 95.9% and the content of crocin in the extract was 22.9%. Significant concentration-related inhibition effects of the extract on all three colorectal cancer cell lines were observed (P<0.01). The proliferation was reduced most significantly in HCT-116 cells, to 45.5% at 1.0 mg/ml and to 6.8% at 3.0 mg/ml. Crocin at 1.0 mM, significantly reduced HCT-116, SW-480, and HT-29 cell proliferation to 2.8%, 52%, and 16.8%, respectively (P<0.01). Since 3.0 mg/ml Crocus sativus extract contained approximately 0.6 mM crocin, the observed effects suggest that crocin is a major responsible constituent in the extract. Significant anti-proliferative effects were also observed in non-small cell lung cancer cells. However, Crocus sativus extract did not significantly affect the growth of non-cancer young adult mouse colon cells. CONCLUSION Data from this study demonstrated that Crocus sativus extract and its major constituent, crocin, significantly inhibited the growth of colorectal cancer cells while not affecting normal cells. Crocus sativus extract should be investigated further as a viable option in the treatment of colorectal cancer.
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Affiliation(s)
- H.H. Aung
- Tang Center for Herbal Medicine Research, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
- Department of Anesthesia & Critical Care, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - C.Z. Wang
- Tang Center for Herbal Medicine Research, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
- Department of Anesthesia & Critical Care, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - M. Ni
- Tang Center for Herbal Medicine Research, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
- Department of Anesthesia & Critical Care, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - A. Fishbein
- Tang Center for Herbal Medicine Research, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
- Department of Anesthesia & Critical Care, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - S.R. Mehendale
- Tang Center for Herbal Medicine Research, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
- Department of Anesthesia & Critical Care, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - J.T. Xie
- Tang Center for Herbal Medicine Research, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
- Department of Anesthesia & Critical Care, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - A.Y. Shoyama
- Faculty of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - C.S. Yuan
- Tang Center for Herbal Medicine Research, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
- Department of Anesthesia & Critical Care, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
- Committee on Clinical Pharmacology and Pharmacogenomics, The Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
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Ni M, Prasad T, Lee ES, Huynh C, Roberts RL. 300 DIFFERENTIAL EFFECTS OF GRANULOCYTE-MACROPHAGE COLONY-STIMULATING FACTOR UPON NEUTROPHIL ACTIVATION AS EVALUATED BY FLOW CYTOMETRIC AND MORPHOLOGICAL ASSAYS. J Investig Med 2006. [DOI: 10.2310/6650.2005.x0004.299] [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: 11/18/2022]
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Ni M, Prasad T, Lee E, Huynh C, Roberts R. Differential Effects of Granulocyte-Macrophage Colony-Stimulating Factor upon Neutrophil Activation as Evaluated by Flow Cytometric and Morphological Assays. J Investig Med 2006. [DOI: 10.1177/108155890605401s183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- M. Ni
- Department of Pediatrics, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - T. Prasad
- Department of Pediatrics, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - E.S. Lee
- Department of Pediatrics, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - C. Huynh
- Department of Pediatrics, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - R.L. Roberts
- Department of Pediatrics, David Geffen School of Medicine at UCLA, Los Angeles, CA
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Mabuchi H, Nohara A, Higashikata T, Ueda K, Bujo H, Matsushima T, Ikeda Y, Ni M. M.575 Rosuvastatin produces substantial improvements in the lipid profile of Japanese patients with heterozygous familial hypercholesterolemia. ATHEROSCLEROSIS SUPP 2004. [DOI: 10.1016/s1567-5688(04)90573-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Chu R, Ni P, Ni M, Shen F. Genetic epidemiology study of pathological myopia. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2000; 17:178-80. [PMID: 10837519] [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: 02/16/2023]
Abstract
OBJECTIVE To explore the genetic epidemiology of pathological myopia (PM), including hereditary and genetic model. METHODS The simple segregation analysis was done by SEGRANB. The values of segregation ratio p and the proportion of sporadic cases x were estimated. The complex segregation analysis was performed using SAGE-REGD. The genetic model and gene frequency were estimated. The 62 pedigrees with PM were random samples from hospital patients. RESULTS By simple segregation analysis, the genetic pattern of N*N is autosomal recessive and the frequency of sporadic cases is approximately 65.72%. The genetic pattern of A*N may be autosomal recessive (but autosomal dominant cannot be excluded), the frequency of sporadic cases is approximately 35.14%. By complex segregation analysis, the genetic model of PM is autosomal recessive and the gene frequency is 0.147385. CONCLUSION PM is compatible with autosomal recessive inheritance (autosomal dominant not excluded ), the sporadic cases are existent and the gene frequency is 0.147385.
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Affiliation(s)
- R Chu
- Department of Ophthalmology, E & ENT Hospital, Shanghai Medical University, Shanghai, 200031 P. R. China.
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Abstract
The phytochrome photoreceptor family directs plant gene expression by switching between biologically inactive and active conformers in response to the sequential absorption of red and farred photons. Several intermediates that act late in the phytochrome signalling pathway have been identified, but fewer have been identified that act early in the pathway. We have cloned a nuclear basic helix-loop-helix protein, PIF3, which can bind to non-photoactive carboxy-terminal fragments of phytochromes A and B and functions in phytochrome signalling in vivo. Here we show that full-length photoactive phytochrome B binds PIF3 in vitro only upon light-induced conversion to its active form, and that photoconversion back to its inactive form causes dissociation from PIF3. We conclude that photosensory signalling by phytochrome B involves light-induced, conformer-specific recognition of the putative transcriptional regulator PIF3, providing a potential mechanism for direct photoregulation of gene expression.
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Affiliation(s)
- M Ni
- Department of Plant and Microbial Biology, University of California, Berkeley 94720, USA
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Halliday KJ, Hudson M, Ni M, Qin M, Quail PH. poc1: an Arabidopsis mutant perturbed in phytochrome signaling because of a T DNA insertion in the promoter of PIF3, a gene encoding a phytochrome-interacting bHLH protein. Proc Natl Acad Sci U S A 1999; 96:5832-7. [PMID: 10318970 PMCID: PMC21946 DOI: 10.1073/pnas.96.10.5832] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The phytochrome family of informational photoreceptors has a central role in regulating light-responsive gene expression, but the mechanism of intracellular signal transduction has remained elusive. In a genetic screen for T DNA-tagged Arabidopsis mutants affected in early signaling intermediates, we identified poc1 (photocurrent 1), which exhibits enhanced responsiveness to red light. This phenotype is absent in a phyB (phytochrome B) null mutant background, indicating that the poc1 mutation enhances phyB signal transduction. The T DNA insertion in poc1 was found to be located in the promoter region of PIF3, a gene encoding a basic helix-loop-helix protein. The mutant phenotype seems to result from insertion-induced overexpression of this gene in red-light-grown seedlings, consistent with PIF3 functioning as a positively acting signaling intermediate. These findings, combined with data from a separate yeast two-hybrid screen that identified PIF3 as a phytochrome-interacting factor necessary for normal signaling, provide evidence that phytochrome signal transduction may include a direct pathway to photoresponsive nuclear genes via physical interaction of the photoreceptor molecules with the potential transcriptional regulator PIF3.
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Affiliation(s)
- K J Halliday
- Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
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Zhang Q, Peng S, Ni M, Hu X, Yang W. [Determination of ten Chinese traditional medicines made in Jiangxi province by AAS]. Guang Pu Xue Yu Guang Pu Fen Xi 1999; 19:203-205. [PMID: 15819008] [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: 05/24/2023]
Abstract
The quantities of 21 microelements were determined in 10 Chinese traditional medicines, using both flame and graphite oven atomic absorption spectrometry. We studied the efficacies of such Chinese medicaments. The result showed the efficacies related to the inorganic microelements.
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Affiliation(s)
- Q Zhang
- Institute of Applied Chemistry, Nanchang University, 330047 Nanchang
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Ni M, Zhang L, Yang Y, Zhang H. [Study on the mutual interference of rare earth elements by ICP-AES]. Guang Pu Xue Yu Guang Pu Fen Xi 1999; 19:67-69. [PMID: 15818920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In this paper, the mutual interference of rare earth elements have been studied by ICP-AES. Thirty seven analyte lines of sixteen rare earth elemnts have been investigated. It is found useful to correctly select analyte lines of rare earth elements and overcome their mutual interference.
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Affiliation(s)
- M Ni
- Institute of Applied Chemistry, Nanchang University, 330047 Nanchang
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