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Li Y, Zeng Y, Chen Z, Tan X, Mei X, Wu Z. The role of aryl hydrocarbon receptor in vitiligo: a review. Front Immunol 2024; 15:1291556. [PMID: 38361944 PMCID: PMC10867127 DOI: 10.3389/fimmu.2024.1291556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 01/18/2024] [Indexed: 02/17/2024] Open
Abstract
Vitiligo is an acquired autoimmune dermatosis characterized by patchy skin depigmentation, causing significant psychological distress to the patients. Genetic susceptibility, environmental triggers, oxidative stress, and autoimmunity contribute to melanocyte destruction in vitiligo. Due to the diversity and complexity of pathogenesis, the combination of inhibiting melanocyte destruction and stimulating melanogenesis gives the best results in treating vitiligo. The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor that can regulate the expression of various downstream genes and play roles in cell differentiation, immune response, and physiological homeostasis maintenance. Recent studies suggested that AhR signaling pathway was downregulated in vitiligo. Activation of AhR pathway helps to activate antioxidant pathways, inhibit abnormal immunity response, and upregulate the melanogenesis gene, thereby protecting melanocytes from oxidative stress damage, controlling disease progression, and promoting lesion repigmentation. Here, we review the relevant literature and summarize the possible roles of the AhR signaling pathway in vitiligo pathogenesis and treatment, to further understand the links between the AhR and vitiligo, and provide new potential therapeutic strategies.
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Affiliation(s)
- Yiting Li
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yibin Zeng
- Department of Dermatology, Minhang Hospital, Fudan University, Shanghai, China
| | - Zile Chen
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xi Tan
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xingyu Mei
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhouwei Wu
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Yang Z, Wang J, Qi Y, Tian X, Mei X, Zhang Z, Wang S. [Bioinformatics analysis of the RNA binding protein DDX39 of Toxoplasma gondii]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2023; 35:358-365. [PMID: 37926470 DOI: 10.16250/j.32.1374.2023002] [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] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
OBJECTIVE To analyze the RNA binding protein of Toxoplasma gondii (TgDDX39) using bioinformatics technology, and to evaluate the immunogenicity of TgDDX39, so as to provide insights into development of toxoplasmosis vaccines. METHODS The amino acid sequences of TgDDX39 were retrieved from the ToxoDB database, and the physicochemical properties, transmembrane structure domain, signal peptide sites, post-translational modification sites, coils, secondary and tertiary structures, hydrophobicity, and antigenic epitopes of the TgDDX39 protein were predicted using online bioinformatics tools, incluiding ProtParam, TMHMM 2.0, SignalP 5.0, NetPhos 3.1, COILS, SOPMA, Phyre2, ProtScale, ABCpred, SYFPEITHI and DNA-STAR. RESULTS TgDDX39 protein was predicted to be an unstable hydrophilic protein with the molecular formula of C2173H3458N598O661S18, which contained 434 amino acids and had an estimated molecular weight of 49.1 kDa and a theoretical isoelectric point of 5.55. The protein was predicted to have an extremely low possibility of signal peptides, without transmembrane regions, and contain 27 phosphorylation sites. The β turn and random coils accounted for 39.63% of the secondary structure of the TgDDX39 protein, and a coiled helix tended to produce in one site. In addition, the TgDDX39 protein contained multiple B and T cell antigenic epitopes. CONCLUSIONS Bioinformatics analyses predict that TgDDX39 protein has high immunogenicity and contains multiple antigenic epitopes. TgDDX39 protein is a potential candidate antigen for vaccine development.
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Affiliation(s)
- Z Yang
- Department of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, China
- Xinxiang Key Laboratory of Pathogenic Biology, Xinxiang, Henan 453003, China
| | - J Wang
- Department of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, China
- Xinxiang Key Laboratory of Pathogenic Biology, Xinxiang, Henan 453003, China
| | - Y Qi
- Department of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, China
| | - X Tian
- Department of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, China
- Xinxiang Key Laboratory of Pathogenic Biology, Xinxiang, Henan 453003, China
| | - X Mei
- Department of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, China
- Xinxiang Key Laboratory of Pathogenic Biology, Xinxiang, Henan 453003, China
| | - Z Zhang
- Department of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, China
- Xinxiang Key Laboratory of Pathogenic Biology, Xinxiang, Henan 453003, China
| | - S Wang
- Department of Pathogenic Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, China
- Xinxiang Key Laboratory of Pathogenic Biology, Xinxiang, Henan 453003, China
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Yang Z, Meng J, Mei X, Xiao Q, Mo M, Zhang L, Shi W, Chen X, Ma J, Zhang Z, Shao Z, Guo X, Yu X. Stereotactic Radiotherapy or Whole Brain Radiotherapy Combined with Pyrotinib and Capecitabine in HER2-Positive Advanced Breast Cancer Patients with Brain Metastases (BROPTIMA): A Prospective, Phase Ib/II Single-Arm Clinical Study. Int J Radiat Oncol Biol Phys 2023; 117:S173-S174. [PMID: 37784431 DOI: 10.1016/j.ijrobp.2023.06.641] [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) Approximately half of patients with advanced HER2-positive breast cancer (BC) will develop brain metastases (BM) over time. Local therapy including stereotactic radiotherapy (SRT) and whole brain radiotherapy (WBRT) is the main initial treatment in malignant tumor patients with BM. However, more than 50% patients after radiotherapy in one year suffered intracranial recurrence. Pyrotinib, a small molecule, irreversible, pan-ErbB receptor tyrosine kinase inhibitor (TKI), has a high potency for controlling BM and reducing the occurrence of brain metastases in advanced HER2-positive BC patients. We hypothesized that SRT or WBRT combined with pyrotinib and capecitabine could decrease intracranial progression in HER2 positive BC with newly diagnosed BM. MATERIALS/METHODS In this prospective single-arm phase Ib/II trial (NCT04582968), eligible patients were assigned to either fractionated stereotactic radiotherapy (FSRT) or whole-brain radiation therapy (WBRT), combined with pyrotinib and capecitabine. The primary endpoint was one-year CNS progression-free survival (PFS) rate. Secondary endpoints included intracranial objective response rate (IC-ORR) according to RANO-BM criteria, progression-free survival (PFS), overall survival (OS) and evaluation of safety and neurocognitive function. RESULTS From January 2020 to August 2022, 40 patients were enrolled. Twenty-nine patients were treated with FSRT in 8 Gy per fraction with 3 to 5 fractions and 11 were treated with WBRT in 3 Gy per fraction with 10 fractions, and then received chemotherapy in a time frame starting from 0 to 7 days after radiotherapy. At a median follow-up of 17.3 months, 1-year CNS-PFS rate was 74.9% (95% CI 61.9-90.7%) and median CNS-PFS was 18 months (95% CI, 15.5 to NA months). One-year PFS rate was 66.9% (53.1-84.2%) and median PFS time was 17.6 months (95% CI 12.8-34.1 months). The best intracranial response rate (IC-ORR: complete response and partial response) was 92.5% (37/40). The most common grade 3 or worse toxicity was diarrhea (7.5%) and asymptomatic radiation necrosis was detected in 4 of 67(6.0%) lesions treated with FSRT. No differences of neurocognitive function evaluated by MMSE (Mini-Mental State Exam) were observed between different groups at any time point. CONCLUSION Radiotherapy combined with pyrotinib and capecitabine resulted in a promising efficacy that crossed the pre-specified boundary in patients with HER2-positive advanced breast cancer with brain metastases. This is the first prospective study showing the efficacy and safety of CNS radiotherapy concurrent with pyrotinib and capecitabine in patients with BM from HER2-positive breast cancer. Further investigation in a randomized controlled study is warranted.
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Affiliation(s)
- Z Yang
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - J Meng
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - X Mei
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Q Xiao
- Department of Radiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - M Mo
- Department of Statistics, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - L Zhang
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - W Shi
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - X Chen
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - J Ma
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Z Zhang
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Z Shao
- Department of Breast Surgery, Precision Cancer Medicine Center, Fudan University Shanghai Cancer Center; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - X Guo
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - X Yu
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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Xie Y, Mei X, Shi W. Kaempferol promotes melanogenesis and reduces oxidative stress in PIG1 normal human skin melanocytes. J Cell Mol Med 2023; 27:982-990. [PMID: 36924030 PMCID: PMC10064034 DOI: 10.1111/jcmm.17711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 02/19/2023] [Accepted: 02/24/2023] [Indexed: 03/18/2023] Open
Abstract
Vitiligo is an autoimmune disease characterized by depigmentation. Kaempferol is a flavonoid compound with broad anti-inflammatory and antioxidant properties. The purpose of this study was to investigate the effect of kaempferol on melanogenesis in PIG1 normal human skin melanocytes and its response to oxidative stress. The effect of kaempferol on melanin synthesis in PIG1 normal human skin melanocytes was explored by measuring tyrosinase activity, melanin content, mRNA and protein expression of key enzymes and expression of related pathway proteins. The effects of kaempferol pretreatment on cell viability, apoptosis, ROS level and HO-1 protein level under H2 O2 stimulation were explored. When treated with kaempferol, the tyrosinase activity and melanin content of PIG1 cells increased, the mRNA and protein expressions of TYR, TRP1, TRP2 and MITF increased, and the phosphorylation level of ERK1/2 increased. Upon the stimulation of H2 O2 , kaempferol reduced the production of ROS, decreased apoptosis and increased the protein expression of HO-1 in PIG1 cells. In addition, kaempferol inhibited oxidative stress-induced melanin reduction and promoted melanin synthesis in PIG1 cells and protected against H2 O2 -induced oxidative stress damage.
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Affiliation(s)
- Yihui Xie
- Department of Dermatology, The Affiliated Hospital of Jiaxing University, The First Hospital of Jiaxing, Jiaxing, China
| | - Xingyu Mei
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weimin Shi
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Shi T, Feng Y, Wang C, Liu H, Li T, Liu WD, Zhou HB, Aini A, Mei X, Guo XW, Jiang MS, Gao F. [Clinical and endoscopic characteristics of adult celiac disease]. Zhonghua Nei Ke Za Zhi 2023; 62:35-42. [PMID: 36631035 DOI: 10.3760/cma.j.cn112138-20220220-00130] [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: 01/13/2023]
Abstract
Objective: The study aimed to analyze the clinical and endoscopic characteristics of adult celiac disease (CD) to provide a scientific basis for more effective CD diagnosis and treatment. Methods: In this cross-sectional study, the clinical and endoscopic data of 96 adult CD patients treated in the Department of Gastroenterology of the People's Hospital of Xinjiang Uygur Autonomous Region from March 2016 to December 2021 were retrospectively collected and analyzed. Results: A total of 96 CD patients were diagnosed, including 33 men and 63 women. The average age was 47±14 years (range, 18-81 years). The disease occurred mainly in the age group of 31-60 years. The median course of the disease was 2.0 (0.2-40.0) years. There were 41 (42.7%) classical and 55 (57.3%) non-classical CD patients. All patients with classical CD showed chronic diarrhea, often accompanied by abdominal pain (46.3%, 19/41), abdominal distension (17.1%, 7/41), anemia (65.9%, 27/41), and chronic fatigue (48.8%, 20/41). The main manifestations of non-classical CD were chronic abdominal pain (58.2%, 32/55), abdominal distension (32.7%, 18/55), anemia (40.0%, 22/55), and osteopenia/osteoporosis (38.2%, 21/55). Compared with non-classical CD, anemia developed more frequently in classical CD, and the difference was statistically significant (P = 0.012). The incidence of complications in CD patients was 36.5% (35/96), and the main complications were thyroid disease (19.8%, 19/96), connective tissue disease (6.2%, 6/96), and kidney disease (6.2%, 6/96). There was no significant difference between classical and non-classical CD (P>0.05). The frequency of endoscopic manifestations in CD patients was 84.4% (81/96). Duodenal bulb endoscopy showed nodular changes (72.9%, 70/96), grooved changes (10.4%, 10/96), and focal villous atrophy (9.4%, 9/96). The main manifestations of descending endoscopy were the decrease, flattening, or disappearance of duodenal folds (43.8%, 42/96), scallop-like changes (38.5%, 37/96), and nodular changes (34.4%, 33/96). Conclusions: Adult CD patients are mostly female. CD occurred mainly in the age group of 31-60 years. The clinical manifestations were mainly those of non-classical CD. Some patients often had other autoimmune diseases. Patients with characteristic endoscopic manifestations should be warned about the possibility of developing CD. Clinicians should strengthen the understanding of CD and reduce the related rates of missed diagnosis.
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Affiliation(s)
- T Shi
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China Xinjiang Digestive System Disease Clinical Medicine Research Center, Urumqi 830011, China Xinjiang Medical University, Urumqi 830011, China
| | - Y Feng
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China Xinjiang Digestive System Disease Clinical Medicine Research Center, Urumqi 830011, China
| | - C Wang
- Department of Pathology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
| | - H Liu
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China Xinjiang Digestive System Disease Clinical Medicine Research Center, Urumqi 830011, China
| | - T Li
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China Xinjiang Digestive System Disease Clinical Medicine Research Center, Urumqi 830011, China
| | - W D Liu
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China Xinjiang Digestive System Disease Clinical Medicine Research Center, Urumqi 830011, China
| | - H B Zhou
- Department of Gastroenterology, People's Hospital of Kizilsu Kirgiz Autonomous Prefecture, Kizilsu Kirgiz Autonomous Prefecture 845350, China
| | - Abudureyimu Aini
- Department of Gastroenterology, Kashgar Second People's Hospital, Kashgar 844099, China
| | - X Mei
- Department of Gastroenterology, Altay Regional People's Hospital, Altay 836500, China
| | - X W Guo
- Department of Gastroenterology, Aksu People's Hospital, Aksu 843099, China
| | - M S Jiang
- Department of Gastroenterology, Turpan People's Hospital, Turpan 838099, China
| | - F Gao
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China Xinjiang Digestive System Disease Clinical Medicine Research Center, Urumqi 830011, China
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Han B, Jiao S, Chen J, Wang Z, Zhao Y, Zhang G, Chen G, Zhou M, Zhou J, Du Y, Wu L, Xu Z, Mei X, Zhang W, He J, Cui J, Zhang Z, Luo H, Liu W, Sun Y. 59MO Final analysis of AK105-302: A randomized, double-blind, placebo-controlled, phase III trial of penpulimab plus carboplatin and paclitaxel as first-line treatment for advanced squamous NSCLC. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Xie Y, Xu Z, Shi W, Mei X. Biological function and application of melanocytes induced and transformed by mouse bone marrow mesenchymal stem cells. Regen Ther 2022; 21:148-156. [PMID: 35844295 PMCID: PMC9260302 DOI: 10.1016/j.reth.2022.06.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 06/12/2022] [Accepted: 06/16/2022] [Indexed: 11/29/2022] Open
Abstract
Background A large number of autologous melanocytes are required for surgical treatment of depigmentation diseases such as vitiligo. The purpose of this experiment is to explore the application of melanocytes induced by mesenchymal stem cells to clinical treatment. Therefore, we have induced mouse bone marrow mesenchymal stem cells (BMMSCs) into melanocytes (miMels) in the previous experiment. This experiment continues the previous experiment to further study the biological functions of miMels and their application in tissue engineering. Methods We examined whether miMels can produce active tyrosinase, melanin, and response to α-MSH. The ability of miMels to produce melanin to keratinocytes was tested by co-culture. By applying miMels to tissue-engineered skin, the survival and function of miMels on the surface of nude mice were verified. Results MiMels can produce active tyrosinase and melanin, and can pass melanin to the co-cultured keratinocytes. Under the stimulation of α-MSH, the active tyrosinase and melanin content of miMels increased. We tried to apply it to the establishment of tissue-engineered skin and obtained tissue-engineered skin containing miMels. Then we tried to transplant tissue-engineered skin on the back skin of nude mice and succeeded. The transplanted miMels survived in local tissues, synthesized active tyrosinase and melanin, and expressed the marker protein of melanocytes. Conclusion In short, miMels can be used as a cell source for tissue engineering skin. MiMels not only have a typical melanocyte morphology but also have the same biological functions as normal melanocytes. What's more important is its successful application in mouse tissue-engineered experiments.
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Gao ZZ, Pan YJ, Ma J, Li HL, Mei X, Song YG. [Study on the difference of curative effect of conventional mercury displacement treatment on mercury in brain and kidney]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022; 40:255-259. [PMID: 35545590 DOI: 10.3760/cma.j.cn121094-20210202-00073] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To explore the expulsion effect of sodium dimercaptopropanesulfonate (DMPS) on mercury in different organs of mercury poisoning and the therapeutic effect of glutathione (GSH) combined with antioxidant therapy on mercury poisoning. Methods: In February 2019, 50 SPF male SD rats were randomly divided into 5 groups, 10 rats in each group: A (saline negative control group) , B (HgCL2 positive control group) , treatment group (C: intramuscular injection of DMPS 15 mg/kg treatment, D: intramuscular injection of DMPS30 mg/kg treatment, E: intramuscular injection of DMPS 15 mg/kg and intraperitoneal injection of GSH200 mg/kg treatment) . Rats in group B, C, D and E were subcutaneously injected with mercury chloride solution (1 mg/kg) to establish a rat model of subacute mercury poisoning kidney injury. Rats in group A were subcutaneously injected with normal saline. After the establishment of the model, rats in the treatment group were injected with DMPS and GSH. Rats in group A and group B were injected with normal saline. At 21 d (treatment 7 d) and 28 d (treatment 14 d) after exposure, urine and blood samples of 5 rats in each group were collected. Blood biochemistry, urine mercury, urine microalbumin and mercury content in renal cortex, cerebral cortex and cerebellum were detected. Results: After exposure to mercury, the contents of mercury in renal cortex, cerebrum and cerebellum of rats in group B, C, D and E increased, and urine microalbumin increased. Pathology showed renal tubular injury and renal interstitial inflammation. Compared with group B, urinary mercury and renal cortex mercury in group C, D and E decreased rapidly after DMPS treatment, and there was no significant decrease in mercury levels in cerebellum and cerebral cortex of rats, accompanied by transient increase in urinary albumin after DMPS treatment (P<0.05) ; the renal interstitial inflammation in group E was improved after GSH treatment. There was a positive correlation between urinary mercury and the contents of mercury in renal cortex, cerebral cortex and cerebellum (r=0.61, 0.47, 0.48, P<0.05) . Conclusion: DMPS mercury expulsion treatment can significantly reduce the level of metal mercury in the kidney, and there is no significant change in the level of metal mercury in the cortex and cerebellum.
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Affiliation(s)
- Z Z Gao
- Emergency medical research center of Beijing Chaoyang Hospital Affiliated to Capital Medical University; Beijing Key Laboratory of Cardiopulmonary Resuscitation, Beijing 100020, China
| | - Y J Pan
- Department of Occupational Disease and Poisoning Medicine, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing 100020, China
| | - J Ma
- Department of Occupational Disease and Poisoning Medicine, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing 100020, China
| | - H L Li
- Department of Occupational Disease and Poisoning Medicine, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing 100020, China
| | - X Mei
- Emergency medical research center of Beijing Chaoyang Hospital Affiliated to Capital Medical University; Beijing Key Laboratory of Cardiopulmonary Resuscitation, Beijing 100020, China
| | - Y G Song
- Department of Occupational Disease and Poisoning Medicine, Beijing Chaoyang Hospital Affiliated to Capital Medical University, Beijing 100020, China
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Yang Y, Wang Z, Fang J, Yu Q, Han B, Cang S, Chen G, Mei X, Yang Z, Stefaniak V, Lin Y, Wang S, Zhang W, Sun L, Zhang Y. 4MO Final overall survival (OS) data of sintilimab plus pemetrexed (SPP) and platinum as first-line (1L) treatment for locally advanced or metastatic nonsquamous NSCLC (AMnsqNSCLC) in the phase III ORIENT-11 study. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.02.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Mao Y, Xu Z, Song J, Xie Y, Mei X, Shi W. Efficacy of a mixed preparation containing piperine, capsaicin and curcumin in the treatment of alopecia areata. J Cosmet Dermatol 2022; 21:4510-4514. [PMID: 35318791 DOI: 10.1111/jocd.14931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/26/2022] [Accepted: 03/16/2022] [Indexed: 11/27/2022]
Abstract
Alopecia areata is a common non-scarring alopecia, mainly manifested as sudden localized patchy alopecia. It is currently believed to be related to autoimmune, genetic, emotional stress and endocrine factors. 60 patients were enrolled in this study and divided into 2 groups randomly: topical treated with the mixed preparation (case) twice daily and minoxidil (control) once daily for 3 months. The degree of hair loss was assessed by SALT and dermoscopy . Based on our findings, the mixed preparation of piperine, capsaicin and curcumin is effective in treating alopecia areata, but it has not been shown to be superior to minoxidil in short-term therapy.
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Affiliation(s)
- Yaqi Mao
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ziqian Xu
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun Song
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yihui Xie
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xingyu Mei
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weimin Shi
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Xu Z, Xie Y, Mao Y, Huang J, Mei X, Song J, Sun Y, Yao Z, Shi W. Ferroptosis-Related Gene Signature Predicts the Prognosis of Skin Cutaneous Melanoma and Response to Immunotherapy. Front Genet 2021; 12:758981. [PMID: 34804126 PMCID: PMC8595480 DOI: 10.3389/fgene.2021.758981] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Accepted: 10/14/2021] [Indexed: 12/21/2022] Open
Abstract
Ferroptosis is a non-apoptotic regulated cell death process, and much research has indicated that ferroptosis can induce the non-apoptotic death of tumor cells. Ferroptosis-related genes are expected to become a biological target for cancer treatment. However, the regulation of ferroptosis-related genes in skin cutaneous melanoma (SKCM) has not been well studied. In the present study, we conducted a systematic analysis of SKCM based on RNA sequencing data and clinical data obtained from The Cancer Genome Atlas (TCGA) database and the FerrD database. SKCM patients from the GSE78220 and MSKCC cohorts were used for external validation. Applying consensus clustering on RNA sequencing data from TCGA the generated ferroptosis subclasses of SKCM, which were analyzed based on the set of differentially expressed ferroptosis-related genes. Then, a least absolute shrinkage and selection operator (LASSO)-Cox regression was used to construct an eight gene survival-related linear signature. The median cut-off risk score was used to divide patients into high- and low-risk groups. The time-dependent receiver operating characteristic curve was used to examine the predictive power of the model. The areas under the curve of the signature at 1, 3, and 5 years were 0.673, 0.716, and 0.746, respectively. Kaplan-Meier survival analysis showed that the prognosis of high-risk patients was worse than that of low-risk patients. Univariate and multivariate Cox regression analyses showed that the risk signature was a robust independent prognostic indicator. By incorporating risk scores with tumor staging, a nomogram was constructed to predict prognostic outcomes for SKCM patients. In addition, the immunological analysis showed different immune cell infiltration patterns. Programmed-death-1 (PD-1) immunotherapy showed more significant benefits in the low-risk group than in the high-risk group. In summary, a model based on ferroptosis-related genes can predict the prognosis of SKCM and could have a potential role in guiding targeted therapy of SKCM.
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Affiliation(s)
- Ziqian Xu
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yihui Xie
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yaqi Mao
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Juntao Huang
- Department of Otolaryngology Head and Neck Surgery, Ningbo Medical Center (Ningbo Lihuili Hospital), The Affiliated Lihuili Hospital of Ningbo University, Ningbo, China
| | - Xingyu Mei
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun Song
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yue Sun
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhixian Yao
- Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weimin Shi
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Zhou Y, Mei X, Cai Z, Wang Q, Duanmu J, Kai O, Zhang H, Tang X, Han X. An Efficient and Recyclable Sn-Based Phosphotungstic Acid with Tunable Brønsted/Lewis Acidity for Selective Oxidation of Benzyl Alcohol. J BRAZIL CHEM SOC 2021. [DOI: 10.21577/0103-5053.20200165] [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: 11/04/2022] Open
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13
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Xiaopei H, Kunfu D, Lianyuan T, Zhen L, Mei X, Haibo Y. Tumor invasion front morphology: a novel prognostic factor for intrahepatic cholangiocarcinoma. Eur Rev Med Pharmacol Sci 2020; 23:9821-9828. [PMID: 31799649 DOI: 10.26355/eurrev_201911_19545] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To explore the prognostic value of the morphology of tumor invasion front (TIF) in Intrahepatic Cholangiocarcinoma (ICC). PATIENTS AND METHODS Seventy-four ICC patients with complete clinicopathological data and follow-up information were enrolled in our study. The most typical morphology of TIF of each case will be classified as low-grade group or high-grade group after evaluation by two pathologists. The clinicopathological characteristics, disease-free survival (DFS), and overall survival (OS) were compared between the two groups. RESULTS A total of 26 (35.3%) patients were assigned to low-grade group, while 48 (64.7%) patients were assigned to high-grade group. High-grade group was associated with higher CA19-9 (p=0.032), poor differentiation (p=0.050), larger tumor diameter (p=0.016), advanced T staging (p=0.048), and higher incidence of lymph node (LN) metastasis (0.014). No significant associations were found in demographic and clinical characteristics between the two groups. On multivariable analysis, high-grade group was a significant independent predictor of worse DFS (HR=0.433, 95% CI=0.235-0.800, p=0.002) and OS (HR=0.363, 95% CI=0.187-0.704, p=0.003). CONCLUSIONS High-grade morphology of TIF was an independent prognostic factor of ICC.
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Affiliation(s)
- H Xiaopei
- Department of Hepatobiliary Surgery, People's Hospital of Zhengzhou University, Zhengzhou, China.
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14
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Liu B, Xie Y, Mei X, Sun Y, Shi W, Wu Z. Reciprocal regulation of interleukin-17A and interleukin-22 secretion through aryl hydrocarbon receptor activation in CD4 + T cells of patients with vitiligo. Exp Ther Med 2020; 21:158. [PMID: 33456525 PMCID: PMC7792475 DOI: 10.3892/etm.2020.9589] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 02/28/2020] [Indexed: 02/06/2023] Open
Abstract
Previous studies have shown the participation of the cytokines interleukin (IL) 17A and IL22 in the development of vitiligo. The aryl hydrocarbon receptor (AhR) functions in the pathogenesis of vitiligo and can modulate cytokine production. The aim of the present study was to determine the relationship between AhR activation and the secretion of IL17A and IL22 in CD4+ T cells in vitiligo. A total of 20 newly diagnosed patients with progressive, unstable vitiligo and 20 healthy controls were recruited. CD4+ T cells and skin samples were collected. Immunohistochemistry, ELISA, reverse transcription-quantitative PCR, western blotting and RNA interference experiments were performed. The expression of AhR was significantly lower in the CD4+ T cells and skin, both lesional and nonlesional, of patients with vitiligo compared with healthy subjects. AhR expression was markedly lower in nonlesional compared with lesional skin of patients with vitiligo. The expression levels of IL17A and IL22 were significantly higher in patients with vitiligo compared with healthy subjects. Knockdown of AhR significantly increased the production of IL17A and markedly decreased IL22 levels in the CD4+ T cells of patients with vitiligo. Ginkgo biloba extract EGb 761 activated AhR, inhibited IL17A secretion and enhanced IL22 release in the CD4+ T cells of patients with vitiligo. In conclusion, reduced AhR expression is associated with progressive, unstable vitiligo. Activation of AhR with G. biloba extract EGb 761 may have therapeutic potential for decreasing IL17A levels and increasing IL22 levels in patients with vitiligo.
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Affiliation(s)
- Baoyi Liu
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University, Shanghai 200080, P.R. China.,Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
| | - Yongyi Xie
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University, Shanghai 200080, P.R. China.,Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
| | - Xingyu Mei
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University, Shanghai 200080, P.R. China
| | - Yue Sun
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University, Shanghai 200080, P.R. China
| | - Weimin Shi
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University, Shanghai 200080, P.R. China
| | - Zhouwei Wu
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University, Shanghai 200080, P.R. China
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15
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Mei X, Huang J, Sun Y, Wu Z, Shi W. Analysis of how obtaining melanocytes by magnetic cell separation contributes to autoepidermal transplantation technology in treating leucoderma. ADV CLIN EXP MED 2020; 29:1479-1486. [PMID: 33389838 DOI: 10.17219/acem/114339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
BACKGROUND Leucoderma, a depigmentation of the skin, is a common disease in humans, and has been observed in cattle, horses and buffalo as well. OBJECTIVES To analyze the correlation between melanin stem cells and the differentiation and proliferation of melanocytes (MCs). MATERIAL AND METHODS Magnetic cell separation was used to separate melan-A+ cells and PAX3+ cells, which were cultured in vitro. The L-DOPA staining was used to observe cell morphology; Cell Counting Kit-8 (CCK8) was used to determine the cell proliferation rate; and flow cytometry (FCM) was used to determine cell cycle changes. The relative mRNA levels of melanocyte-inducing transcription factor (MITF), dopachrome tautomerase (DCT) and melan-A in cells were determined with reverse-transcription polymerase chain reaction (RT-PCR). RESULTS The number of MC dendrites increased and extended continually during in vitro culture following magnetic cell separation. The proportion of positive L-DOPA staining cells increased from a baseline 40.70% to 82.03%, and the cell proliferation rate increased from 335.0% at D3 to 1577.4% at D20. The results of FCM showed that the cell proportion at the G1 stage in the D20 group was significantly lower than the D3 group; the cell proportion at the G2/M stage also decreased significantly. The expression of MITF and melan-A increased as the culture time increased, while the expression of DCT decreased. CONCLUSIONS The number of MC stem cells decreased and mature MCs increased gradually, indicating that MC stem cells can gradually differentiate into mature MCs during in vitro culture following magnetic cell separation.
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Affiliation(s)
- Xingyu Mei
- Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Jie Huang
- Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Yue Sun
- Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Zhouwei Wu
- Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Weimin Shi
- Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, China
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16
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Meng J, Zhang L, Shi W, Mei X, Yang Z, Ma J, Yu X, Guo X. A 18FDG Uptake Gene Signature Predicts Prognosis After Radiotherapy In Breast Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1627] [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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17
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Wang X, Luo J, Zhang L, Yu X, Yang Z, Mei X, Guo X, Ma J. Impact of Clinical-pathological Factors on Locoregional Recurrence in Mastectomy Patients with T1-2N1 Breast Cancer: Can We Omit Adjuvant Radiotherapy? Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1106] [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: 11/30/2022]
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18
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Zhang L, Yang Y, Wang Z, Fang J, Yu Q, Han B, Cang S, Chen G, Mei X, Yang Z, Ma R, Bi M, Ren X, Zhou J, Li B, Xu W, Ji Y, Peng B. ID:1329 ORIENT-11: Sintilimab + Pemetrexed + Platinum as First-Line Therapy for Locally Advanced or Metastatic Non-Squamous NSCLC. J Thorac Oncol 2020. [DOI: 10.1016/j.jtho.2020.08.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Zhao C, Wang D, Wang X, Mao Y, Xu Z, Sun Y, Mei X, Song J, Shi W. Down-regulation of exosomal miR-200c derived from keratinocytes in vitiligo lesions suppresses melanogenesis. J Cell Mol Med 2020; 24:12164-12175. [PMID: 32918341 PMCID: PMC7579706 DOI: 10.1111/jcmm.15864] [Citation(s) in RCA: 16] [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] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/01/2020] [Accepted: 08/21/2020] [Indexed: 12/13/2022] Open
Abstract
Vitiligo is a refractory disfiguring skin disease. However, the aetiology and pathogenesis of vitiligo have not been fully defined. Previous studies have shown that exosomes from normal human keratinocytes improve melanogenesis by up‐regulating the expression of melanogenesis‐related proteins. Several microRNAs (miRNAs) have been demonstrated to be effective in modulating melanogenesis via exosomes. In the present study, it was found that the effect of exosomes derived from keratinocytes in vitiligo lesions in regulating melanin synthesis is weakened. Furthermore, miR‐200c was detected to be significantly down‐regulated in exosomes from keratinocytes in vitiligo lesions. In addition, miR‐200c enhanced the expression of melanogenesis‐related genes via suppressing SOX1 to activate β‐catenin. In conclusion, our study revealed that the effect of exosomes secreted by keratinocytes in vitiligo lesions exhibited a weaker capacity in promoting melanogenesis of melanocytes. Moreover, the expression of miR‐200c, which mediates melanogenesis in exosomes secreted by keratinocytes in vitiligo lesions, is down‐regulated, which may be one of the pathogenesis in vitiligo. Therefore, keratinocyte‐derived exosomal miR‐200c may be a potential target for the treatment of vitiligo.
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Affiliation(s)
- Chaoshuai Zhao
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Dongliang Wang
- Department of Nuclear Medicine, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xin Wang
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yaqi Mao
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ziqian Xu
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yue Sun
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xingyu Mei
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jun Song
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Weimin Shi
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Yang Y, Sun J, Wang Z, Fang J, Yu Q, Han B, Cang S, Chen G, Mei X, Yang Z, Ma R, Bi M, Ren X, Zhou J, Li B, Zhou H, Wang S, Xu W, Peng B, Zhang L. LBA57 MHC-II antigen presentation pathway as a predictive biomarker for sintilimab plus chemotherapy in first-line treatment of locally advanced or metastatic non-squamous non-small cell lung cancer (nsq-NSCLC). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.2290] [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: 11/30/2022] Open
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21
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Quan H, Wang L, Wang Z, Mei X, Ning J, She D. Alkylacylimidazoles in Claisen–Schmidt and Knoevenagel Condensations. Russ J Org Chem 2020. [DOI: 10.1134/s1070428020080187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Kihira S, Koo C, Mahmoudi K, Leong T, Mei X, Rigney B, Aggarwal A, Doshi AH. Combination of Imaging Features and Clinical Biomarkers Predicts Positive Pathology and Microbiology Findings Suggestive of Spondylodiscitis in Patients Undergoing Image-Guided Percutaneous Biopsy. AJNR Am J Neuroradiol 2020; 41:1316-1322. [PMID: 32554421 DOI: 10.3174/ajnr.a6623] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 04/23/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Pathology and microbiology results for suspected spondylodiscitis on MR imaging are often negative in up to 70% of cases. We aimed to predict whether MR imaging features will add diagnostic value when combined with clinical biomarkers to predict positive findings of spondylodiscitis on pathology and/or microbiology from percutaneous biopsy. MATERIALS AND METHODS In this retrospective single-center institutional review board-approved study, patients with radiologically suspected spondylodiscitis and having undergone percutaneous biopsies were assessed. Demographic characteristics, laboratory values, and tissue and blood cultures were collected. Pathology and microbiology results were used as end points. Three independent observers provided MR imaging-based scoring for typical MR imaging features for spondylodiscitis. Multivariate logistic regression and receiver operating characteristic analysis were performed to determine an optimal combination of imaging and clinical biomarkers in predicting positive findings on pathology and/or microbiology from percutaneous biopsy suggestive of spondylodiscitis. RESULTS Our patient cohort consisted of 72 patients, of whom 33.3% (24/72) had spondylodiscitis. The mean age was 63 ± 16 years with a male/female ratio of 41:31. Logistic regression revealed a combination with an area under the curve of 0.72 for pathology and 0.68 for pathology and/or microbiology. Epidural enhancement on MR imaging improved predictive performance to 0.87 for pathology and 0.78 for pathology and/or microbiology. CONCLUSIONS Our findings demonstrate that epidural enhancement on MR imaging added diagnostic value when combined with clinical biomarkers to help predict which patients undergoing percutaneous biopsy will have positive findings for spondylodiscitis on pathology and/or microbiology.
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Affiliation(s)
- S Kihira
- From the Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - C Koo
- From the Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - K Mahmoudi
- From the Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - T Leong
- From the Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - X Mei
- From the Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - B Rigney
- From the Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - A Aggarwal
- From the Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - A H Doshi
- From the Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, New York.
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Xu C, Gan J, Mei X, Zhou Y, Duanmu J, Zhu G, Zhang H, Han X, Wang Y, Liu SB. Highly Active Silver ion-Exchanged Silicotungstic Acid Catalysts for Selective Esterification of Glycerol with Lauric Acid. Catal Letters 2020. [DOI: 10.1007/s10562-020-03264-2] [Citation(s) in RCA: 6] [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: 11/30/2022]
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Zhao C, Wang X, Mao Y, Xu Z, Sun Y, Mei X, Shi W. Variation of biophysical parameters of the skin with age, gender, and lifestyles. J Cosmet Dermatol 2020; 20:249-255. [PMID: 32333703 DOI: 10.1111/jocd.13453] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 04/07/2020] [Accepted: 04/20/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND Sweet, spicy or greasy food, staying up late, and using electronic products for a long time are common bad habits nowadays. Their role in skin diseases has been paid much attention. OBJECTIVE The aim of this study was to investigate whether unhealthy lifestyles would affect the skin sebum content, SC hydration, and pH and how do they affect. METHODS A total of 300 volunteers were enrolled, and a multifunctional skin physiology monitor measured the three skin biophysical properties on the forehead and dorsal hand. Lifestyle factors were evaluated by a self-administered questionnaire. RESULTS Eating oily, sweet, spicy food, and staying up late increased the sebum content of the forehead significantly. Dorsal hand SC hydration was higher in people eating more sweet food and oily food, and forehead SC hydration was higher in people eating more sweet food and go to bed earlier. Eating sweet food could increase pH in both forehead and dorsal hand. The forehead pH decreased in using electronic products over 6 hours a day or staying up late. There are significant differences in sebum, hydration, and pH value among different age groups. In males, the pH was lower than females, but the sebum was higher. CONCLUSION Sebum content, SC hydration, and pH are affected by unhealthy lifestyles, age, and gender.
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Affiliation(s)
- Chaoshuai Zhao
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xin Wang
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yaqi Mao
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ziqian Xu
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yue Sun
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xingyu Mei
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Weimin Shi
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Qian ZP, Mei X, Zhang YY, Zou Y, Zhang ZG, Zhu H, Guo HY, Liu Y, Ling Y, Zhang XY, Wang JF, Lu HZ. [Analysis of baseline liver biochemical parameters in 324 cases with novel coronavirus pneumonia in Shanghai area]. Zhonghua Gan Zang Bing Za Zhi 2020; 28:229-233. [PMID: 32270660 DOI: 10.3760/cma.j.cn501113-20200229-00076] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Objective: To summarize the clinical characteristics and liver biochemical parameters of 324 cases admitted with novel coronavirus pneumonia in Shanghai area. Methods: Clinical data and baseline liver biochemical parameters of 324 cases with novel coronavirus pneumonia admitted to the Shanghai Public Health Clinical Center from January 20, 2020 to February 24, 2020 were retrospectively analyzed. Patients were divided into two groups based on the status of illness: mild type (mild and typical) and severe type (severe and critical).The differences in clinical data and baseline liver biochemical parameters of the two groups were described and compared. The t-test and Wilcoxon rank-sum test were used for measurement data. The enumeration data were expressed by frequency and rate, and chi-square test was used. Results: Of the 324 cases with novel coronavirus pneumonia, 26 were severe cases (8%), with median onset of 5 days, 20 cases were HBsAg positive (6.2%), and 70 cases (21.6%) with fatty liver, diagnosed with X-ray computed tomography. Alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), γ-glutamyl transferase (GGT), total bilirubin (TBil), albumin(ALB) and international normalized ratio (INR) of 324 cases at baseline were 27.86 ± 20.02 U/L, 29.33 ± 21.02 U/L, 59.93 ± 18.96 U / L, 39.00 ± 54.44 U/L, 9.46 ± 4.58 μmol / L, 40.64 ± 4.13 g / L and 1.02 ± 0.10. Of which, ALT was > than the upper limit of normal (> ULN), accounting for 15.7% (51/324). ALT and AST > ULN, accounting for 10.5% (34/324). ALP > ULN, accounting for 1.2% (4/324). ALP and GGT > ULN, accounting for 0.9% (3/324). INR > ULN was lowest, accounting for 0.6% (2/324). There were no statistically significant differences (P > 0.05) in ALT [(21.5 vs. 26) U / L, P = 0.093], ALP [(57 vs.59) U/L, P = 0.674], and GGT [(24 vs.28) U/L, P = 0.101] between the severe group and the mild group. There were statistically significant differences in AST (23 U/L vs. 34 U/L, P < 0.01), TBil (10.75 vs. 8.05 μmol / L, P < 0.01), ALB (35.79 ± 4.75 vs. 41.07 ± 3.80 g/L, P < 0.01), and INR (1.00 vs. 1.04, P < 0.01). Conclusion: The baseline liver biochemical parameters of 324 cases with novel coronavirus pneumonia in Shanghai area was comparatively lower and the liverinjury degree was mild, and the bile duct cell damage was rare.
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Affiliation(s)
- Z P Qian
- Department of Severe Hepatology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - X Mei
- Department of Infection and Immunology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Y Y Zhang
- Department of Severe Hepatology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Y Zou
- Department of Severe Hepatology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Z G Zhang
- Department of Severe Hepatology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - H Zhu
- Department of Severe Hepatology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - H Y Guo
- Department of Severe Hepatology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Y Liu
- Department of Severe Hepatology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Y Ling
- Department of Infectious Disease, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - X Y Zhang
- Department of Education, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - J F Wang
- Department of Severe Hepatology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - H Z Lu
- Department of Severe Hepatology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China; Department of Infection and Immunology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
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Wang X, Zhao C, Zhang C, Mei X, Song J, Sun Y, Wu Z, Shi W. Increased HERV-E clone 4-1 expression contributes to DNA hypomethylation and IL-17 release from CD4 + T cells via miR-302d/MBD2 in systemic lupus erythematosus. Cell Commun Signal 2019; 17:94. [PMID: 31412880 PMCID: PMC6694475 DOI: 10.1186/s12964-019-0416-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 08/06/2019] [Indexed: 02/06/2023] Open
Abstract
Background Increased human endogenous retroviruses E clone 4–1 (HERV-E clone 4–1) mRNA expression is observed in systemic lupus erythematosus (SLE) patients and associates with the disease activity. In this study, we want to further investigate the mechanism of HERV-E clone 4–1 mRNA upregulation and its roles in SLE progression. Methods CD4+ T cells were isolated from venous blood of SLE patients or healthy controls and qRT-PCR was used to detect HERV-E clone 4–1 mRNA expression. We then investigated the regulation of Nuclear factor of activated T cells 1 (NFAT1) and Estrogen receptor-α (ER-α) on HERV-E clone 4–1 transcription and the functions of HERV-E clone 4–1 3′ long terminal repeat (LTR) on DNA hypomethylation and IL-17 release. Results We found HERV-E clone 4–1 mRNA expression was upregulated in CD4+ T cells from SLE patients and positively correlated with SLE disease activity. This is associated with the activation of Ca2+/calcineurin (CaN)/NFAT1 and E2/ER-α signaling pathway and DNA hypomethylation of HERV-E clone 4–1 5’LTR. HERV-E clone 4–1 also takes part in disease pathogenesis of SLE through miR-302d/Methyl-CpG binding domain protein 2 (MBD2)/DNA hypomethylation and IL-17 signaling via its 3’LTR. Conclusions HERV-E clone 4–1 mRNA upregulation is due to the abnormal inflammation/immune/methylation status of SLE and it could act as a potential biomarker for diagnosis of SLE. HERV-E clone 4–1 also takes part in disease pathogenesis of SLE via its 3’LTR and the signaling pathways it involved in may be potential therapeutic targets of SLE. Electronic supplementary material The online version of this article (10.1186/s12964-019-0416-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xin Wang
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 100 Haining Road, Shanghai, 200080, China
| | - Chaoshuai Zhao
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 100 Haining Road, Shanghai, 200080, China
| | - Chengzhong Zhang
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 100 Haining Road, Shanghai, 200080, China
| | - Xingyu Mei
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 100 Haining Road, Shanghai, 200080, China
| | - Jun Song
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 100 Haining Road, Shanghai, 200080, China
| | - Yue Sun
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 100 Haining Road, Shanghai, 200080, China
| | - Zhouwei Wu
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 100 Haining Road, Shanghai, 200080, China.
| | - Weimin Shi
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 100 Haining Road, Shanghai, 200080, China.
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Mei X, Li F, Fu LJ, Zhang HB, Zhang YQ, Gao W, Huang MR, Liu TL, Guo Y, Shen J. [Clinical characteristics of anomalous origin of the left coronary artery from the pulmonary artery in 91 children]. Zhonghua Er Ke Za Zhi 2019; 57:614-619. [PMID: 31352747 DOI: 10.3760/cma.j.issn.0578-1310.2019.08.009] [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 explore the clinical manifestations, diagnosis, treatment and prognosis of anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) . Methods: A retrospective study identified 91 patients diagnosed with ALCAPA at Shanghai Children's Medical Center from March 2010 to August 2017. According to the left ventricular ejection fraction (LVEF) at the time of consultation, patients were divided into the cardiac insufficiency group (n=54) and the normal cardiac function group (n=37). Clinical features (age of onset, clinical performance, etc) and auxiliary examinations (electrocardiogram, echocardiography, etc) between the two groups were compared using a t-test and a Chi-square test. Prognostic factors were analyzed by an ordered logistic regression and a Pearson correlation coefficient. Results: (1) The age of diagnosis of patients in the cardiac insufficiency group who were usually misdiagnosed as cardiomyopathy was (10.0±2.6) months (20/54) , whereas the age of diagnosis of patients in the normal cardiac function group who were usually misdiagnosed as valvular diseases was (40.0±7.8) months (4/37). According to the pathophysiological mechanism, forty of the 54 (74%) patients in the cardiac insufficiency group were infantile type, and 78% patients (29/37) in the normal cardiac function group were adult type. (2) Preoperative electrocardiogram showed the deep Q wave in lead I occurred more frequently in the cardiac insufficiency group than in the normal cardiac function group (28/54 vs. 11/37, χ(2)=4.388, P=0.036). (3) Twenty patients died in the cardiac insufficiency group including 12 patients who died from postoperative cardiac pump failure and 8 children who did not undergo surgery due to poor prognosis and died from other reasons. There was no death in the normal cardiac function group. (4) Preoperative LVEF was the unique risk factor affecting prognosis (F=16.872, P=0.005). The preoperative LVEF was significantly lower than the postoperative LVEF ((37±11)% vs. (45±14)%, t=3.614, P=0.001) in the cardiac insufficiency group. During the follow-up period, 6 patients in the cardiac insufficiency group still presented with postoperative cardiac dysfunction, and the patients in the normal cardiac function group still had normal cardiac function. Conclusions: Preoperative LVEF was the unique risk factor affecting prognosis of ALCAPA. Patients with infantile type ALCAPA and preoperative cardiac insufficiency should receive long-term follow-up treatment.
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Affiliation(s)
- X Mei
- Department of Cardiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - F Li
- Department of Cardiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - L J Fu
- Department of Cardiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - H B Zhang
- Department of Thoracic and Cardiovascular Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Y Q Zhang
- Department of Cardiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - W Gao
- Department of Cardiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - M R Huang
- Department of Cardiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - T L Liu
- Department of Cardiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Y Guo
- Department of Cardiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - J Shen
- Department of Cardiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
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Mei X, Wu Z, Huang J, Sun Y, Shi W. Screening and analysis of differentially expressed genes of human melanocytes in skin cells mixed culture. Am J Transl Res 2019; 11:2657-2667. [PMID: 31217845 PMCID: PMC6556658] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Accepted: 04/10/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND This study aims to screen the key genes and possible signaling pathways involved in the differentiation and proliferation of human melanocytes (MCs) by in vitro culture of mixed skin cells. This will be helpful to further study the mechanisms and treatment strategies of pigment-related diseases such as vitiligo. METHODS Mixed skin cells were obtained by digesting and separating normal human foreskin tissues. Ribonucleic acid (RNA) was extracted from sorting cells and high-throughput transcriptome sequencing was performed at different culture time points. Differentially expressed genes (DEGs) were obtained by comparing the expression abundance of genes at different culture time points. Then the key genes and signaling pathways involved in the differentiation and proliferation of MCs were screened and verified by real-time quantitative polymerase chain reaction (qPCR) test. RESULTS Twenty one DEGs were finally screened for further qPCR validation, mainly involved in 4 signaling pathways. The expressions of Wnt5A, Wnt5B, FZD2 and FZD3 in Wnt pathway were continuously up-regulated, and that of Wnt4 gene was continuously down-regulated, however, all the above hadn't been verified by qPCR. The expressions of COL5A2, COL6A3, ITGB1, ITGA4, ITGAV, AKT3, PIK3CD, PIK3R1 and PIK3R2 in phosphoinositide 3-kinase (PI3K) pathway were continuously up-regulated, of which PIK3CD, PIK3R2, COL5A2, ITGA4, ITGAV and AKT3 were verified by qPCR. PDGFB and GRB2 gene expressions were down-regulated in platelet-derived growth factor (PDGF) pathway, while PDGFRB was continuously up-regulated, of which PDGFB and PDGFRB were verified. The DHRS3, DHRS9, RDH10 and SDR16C5 genes in retinol metabolic pathway were continuously down-regulated and verified by qPCR. CONCLUSION We suggested that Wnt5A gene in Wnt/β-catenin classical pathway, integrin combining with extracellular matrix through PI3K signaling pathway, retinoic acid catabolism-related genes could promote the differentiation and proliferation of MCs; however, PDGFB gene might have a negative regulatory effect on the growth of MCs.
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Affiliation(s)
- Xingyu Mei
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine Shanghai 200080, China
| | - Zhouwei Wu
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine Shanghai 200080, China
| | - Jie Huang
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine Shanghai 200080, China
| | - Yue Sun
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine Shanghai 200080, China
| | - Weimin Shi
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine Shanghai 200080, China
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Ghani MW, Yi Z, Jiang W, Bin L, Cun LG, Birmany MW, Mei X. γ-Aminobutyric Acid (GABA) Induced in Vitro Differentiation of Rat Pancreatic Ductal Stem Cells into Insulin-Secreting Islet-Like Cell Clusters. Folia Biol (Praha) 2019; 65:246-255. [PMID: 32362308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In vitro produced β-like cells can provide promising cell therapy for curing the epidemic of diabetes. In this context, we aimed to investigate the effects of different concentrations of γ-aminobutyric acid (GABA) on the differentiation of rat pancreatic ductal epithelial-like stem cells (PDESCs) into β-like cells. The PDESC line cells were cultured in the basal media (DMEM/F12 + 10% FBS + 1% penicillinstreptomycin) supplemented with 0 μM, 5 μM, 50 μM, 500 μM, and 5 mM of GABA for 28 days to induce their differentiation. The differentiated cells were detected by cell morphology, dithizone (DTZ) staining, immunofluorescence staining, real-time polymerase chain reaction (qPCR), and glucose-stimulated insulin secretion (GSIS) assay to validate their identity. At the end of 28 days, compared with the control group, enrichment of induced cells was high among the 5 μM, 50 μM, 500 μM, and 5 mM GABA induction groups. The formation of islet-like cell clusters (ICCs) began at 14 days, and the cell clusters showed a growth trend with the culture time. The induced ICCs were positive for DTZ staining, while the control group showed negative results for DTZ staining and the differentiated cells were also positive for β-cell-specific markers (Ins1 and Pdx1). GSIS assay of 50 μM induction group cells at 28 days showed significantly higher levels of C-peptide and insulin secretion than the control, 5 μM, 500 μM, and 5 mM GABA-treated groups (P < 0.01). At the same time, the 50 μM induction group cells also showed significantly higher levels of Ins1, Pdx1 and Nkx6.1 mRNA as compared to the 5 μM, 500 μM and 5 mM GABA groups (P < 0.01). Thus, the addition of GABA to the basal medium effectively induced differentiation of adult rat PDESCs into insulin-secreting β-like cells, and 50 μM was the most effective concentration for the induction.
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Affiliation(s)
- M W Ghani
- Department of Animal Breeding, Genetics and Reproduction, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Z Yi
- Department of Animal Breeding, Genetics and Reproduction, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - W Jiang
- Department of Animal Breeding, Genetics and Reproduction, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - L Bin
- Department of Animal Breeding, Genetics and Reproduction, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - L G Cun
- Department of Animal Breeding, Genetics and Reproduction, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - M W Birmany
- Department of Animal Breeding, Genetics and Reproduction, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - X Mei
- Department of Animal Breeding, Genetics and Reproduction, Guangdong Ocean University, Zhanjiang, Guangdong, China
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Cui Z, Qin Q, Chen P, Wang J, Zhang S, Mei X, Xie B, Wang S. EFFECT OF DORSOMEDIAL HYPOTHALAMUS NEUROPEPTIDE Y KNOCKDOWN ON HEPATIC INSULIN SENSITIVITY. Acta Endocrinol (Buchar) 2019; -5:25-31. [PMID: 31149056 DOI: 10.4183/aeb.2019.25] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Objective In this study we investigated the effect of dorsomedial hypothalamus (DMH) neuropeptide Y (NPY) knock-down on hepatic insulin sensitivity in high-fat (HF) diet-fed rats. Methods Forty-eight Sprague-Dawley rats were randomly assigned to receive bilateral DMH injections of adeno-associated virus AAVshNPY or AAVshCTL and then accessed to regular chow. Five weeks after viral injection, half rats in each group were given access to the HF diet. At 16 weeks, rat livers were collected. Insulin receptor substrate-1 (IRS-1) and phosphoinositide 3-kinase (PI3K) mRNA expression was measured by qRT-PCR. Blood glucose levels were measured by the oxidase method, serum insulin, triglyceride, and TC levels were measured by Elisa. Pathological changes in the liver were assessed by hematoxylin-eosin (HE) staining. AKT, p-AKT, and GSK-3 levels were measured by western blotting. Results Compared with AAVshCTL-injected rats, AAVshNPY-injected rats showed a significant decrease in blood glucose concentrations; serum insulin, triglyceride, and TC; HOMA-IR; and IRS-1 and PI3K mRNA levels (P<0.05). ISI, GSK-3, and p-AKT levels were significantly increased (P<0.05). HE staining showed that AAVshNPY-injected rats fed the HF diet had mild fatty degeneration. Conclusion These results suggest that DMH NPY knock-down improves hepatic insulin sensitivity in HF diet-fed rats by activating the hepatic PI3K/AKT insulin signalling pathway.
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Affiliation(s)
- Z Cui
- First Affiliated Hospital of Zhengzhou University, Department of Endocrinology and Metabolism, Zhengzhou, China
| | - Q Qin
- First Affiliated Hospital of Zhengzhou University, Department of Endocrinology and Metabolism, Zhengzhou, China
| | - P Chen
- First Affiliated Hospital of Zhengzhou University, Department of Endocrinology and Metabolism, Zhengzhou, China
| | - J Wang
- First Affiliated Hospital of Zhengzhou University, Department of Endocrinology and Metabolism, Zhengzhou, China
| | - S Zhang
- First Affiliated Hospital of Zhengzhou University, Department of Endocrinology and Metabolism, Zhengzhou, China
| | - X Mei
- First Affiliated Hospital of Zhengzhou University, Department of Endocrinology and Metabolism, Zhengzhou, China
| | - B Xie
- First Affiliated Hospital of Zhengzhou University, Department of Endocrinology and Metabolism, Zhengzhou, China
| | - S Wang
- First Affiliated Hospital of Zhengzhou University, Department of Endocrinology and Metabolism, Zhengzhou, China
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Ma J, Yu X, Yang Z, Mei X, Guo X. Hypofractionated Partial Breast Irradiation after Breast-conserving Surgery for Patients with Low-risk Breast Cancer: Preliminary Safety Results in initial 50 Cases. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1600] [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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Mei X, Wu Z. Complete amelanotic acral nodular melanoma. CMAJ 2018; 190:E1231. [PMID: 30322988 DOI: 10.1503/cmaj.180304] [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: 11/01/2022] Open
Affiliation(s)
- Xingyu Mei
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Zhouwei Wu
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China
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Sun Y, Mei X, Gao C, Wu Z. Multiple rapidly growing necrotic eruptions on the face. Clin Exp Dermatol 2018; 44:422-424. [PMID: 30230004 DOI: 10.1111/ced.13739] [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] [Accepted: 04/01/2018] [Indexed: 11/27/2022]
Affiliation(s)
- Y Sun
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China
| | - X Mei
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China
| | - C Gao
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Z Wu
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China
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Du W, Xu H, Mei X, Cao X, Gong L, Wu Y, Li Y, Yu D, Liu S, Wang Y, Li W. Probiotic Bacillus enhance the intestinal epithelial cell barrier and immune function of piglets. Benef Microbes 2018; 9:743-754. [DOI: 10.3920/bm2017.0142] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Bacillus is widely used in the livestock industry. This study was designed to evaluate the effects of probiotic Bacillus amyloliquefaciens SC06 (Ba), originally isolated from soil, in piglets diet as an alternative to antibiotics (aureomycin), mainly on intestinal epithelial barrier and immune function. Ninety piglets were divided into three groups: G1 (containing 150 mg/kg aureomycin in the diet); G2 (containing 75 mg/kg aureomycin and 1×108 cfu/kg Ba in the diet); G3 (containing 2×108 cfu/kg Ba in the diet without any antibiotics). The results showed that, compared with the antibiotic group (G1), villus length, crypt depth and villus length/crypt depth ratio of intestine significantly increased in the G2 and G3 groups. In addition, intestinal villi morphology, goblet-cell number, mitochondria structure and tight junction proteins of intestinal epithelial cells in G2 and G3 were better than in G1. The relative gene expression of intestinal mucosal defensin-1, claudin3, claudin4, and human mucin-1 in G3 was significantly lower, while the expression of villin was significantly higher than in the antibiotic group. Probiotic Ba could significantly decrease serum interferon (IFN)-α, IFN-γ, interleukin (IL)-1β, and IL-4 levels, whereas increase tumour necrosis factor (TNF)-α and IL-6 secretion. Ba could also significantly decrease cytokines TNF-α, IFN-γ, IL-1β, and IL-4 level in liver, whereas it significantly increased IFN-α. Furthermore, replacing antibiotics with Ba also significantly down-regulated gene expression of TNF and IL-1α in intestinal mucosa, but up-regulated IL-6 and IL-8 transcription. Dietary addition of Ba could significantly reduce the gene expression of nuclear factor kappa beta (NFκB)-p50 and Toll-like receptor (TLR)6, while there was no significant difference for that of myeloid differentiation primary response 88, TNF receptor-associated factor-6, nucleotide-binding oligomerisation domain-containing protein 1, TLR2, TLR4, and TLR9. Taken together, our findings demonstrated that probiotic Ba could increase the intestinal epithelial cell barrier and immune function by improving intestinal mucosa structure, tight junctions and by activating the TLRs signalling pathway.
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Affiliation(s)
- W. Du
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China P.R
| | - H. Xu
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China P.R
| | - X. Mei
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China P.R
| | - X. Cao
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China P.R
| | - L. Gong
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China P.R
| | - Y. Wu
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China P.R
| | - Y. Li
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China P.R
| | - D. Yu
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China P.R
| | - S. Liu
- National Animal Husbandry Service, Building 20, Maizidian St, Chaoyang District, 100125 Beijing, China P.R
| | - Y. Wang
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China P.R
| | - W. Li
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, 310058 Hangzhou, China P.R
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Wang HX, Mei X, Gong TX, Han N, Liu P, Wang J, Zhang ZM. [The impact of genetic variation of KDR on clinical outcomes of advanced colorectal cancer patients treated by first line bevacizumab based regimens]. Zhonghua Yi Xue Za Zhi 2018; 98:2737-2742. [PMID: 30220171 DOI: 10.3760/cma.j.issn.0376-2491.2018.34.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the association between kinase insertion region receptor (KDR) gene genetic variation and the efficacy of bevacizumab in patients with advanced colorectal cancer(CRC) were investigated in this study. Methods: 118 patients with advanced colorectal cancer who were treated by bevacizumab based first line regimens were included in this study. Peripheral blood and the biopsy tissue specimens of the CRC patients were collected for the genotyping of genetic variation and KDR gene expression, respectively. The univariate analysis of genotypes and prognosis was carried out by Kaplan-Meier survival analysis, and multivariate were adjusted by Cox regression analysis. Results: Located in the coding region, the prevalence of 889 C>T in KDR among the study population were as follows: CC genotype 86 cases (72.88%), CT genotype 30 cases (25.42%), TT genotype 2 cases (1.70%), minor allele frequency of 889 C>T is 0.14. The distribution of three genotypes in accordance with Hardy-Weinberg Equilibrium (P=0.737). There were no statistical differences in the distribution of the genotypes in baseline clinical data. TT and CT genotype patients were merged in the comparison of clinical outcomes. The clinical outcomes analysis of patients with different genotypes found that the objective response rates (ORR) of CT/TT genotypes were 34.38% and 43.02% (P=0.395), respectively. And the median progression free survival (PFS) of patients with CT/TT genotype and CC genotype were 7.5 and 9.7 months respectively, which was statistically significant (P=0.009). In terms of overall survival (OS), the median OS of the two genotypes were 19.3 and 20.1 (P=0.025), respectively. Adjusted in multivariate Cox regression analysis of PFS, CT/TT genotypes were an independent factor for PFS (OR=1.88, P=0.023). Additionally, of the 57 biopsy tissue specimens, gene expression analysis was conducted. And the results showed that the expression of KDR in cancer tissues of the patients with CT/TT genotypes were significantly higher than those of the CC genotype patients (P<0.001). Conclusion: Among advanced colorectal cancer patients treated by bevacizumab, the polymorphism 889 C>T of KDR may impact the clinical outcomes of bevacizumab first line treatment by influencing the mRNA expression of KDR.
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Affiliation(s)
- H X Wang
- Department of Oncology, the Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, China
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Zhang C, Zhou L, Huang J, Mei X, Wu Z, Shi W. A preliminary study of growth characteristics of melanocytes co-cultured with keratinocytes in vitro. J Cell Biochem 2018; 119:6173-6180. [PMID: 29637612 DOI: 10.1002/jcb.26825] [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] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 02/28/2018] [Indexed: 12/18/2022]
Abstract
To clarify the characteristic growth of melanocytes (MCs) and Keratinocytes (KCs) in vitro and discuss the mechanism of culturing autologous melanocytes in the treatment of vitiligo. Epidermis cells derived from normal skin tissues were isolated and cultured in vitro. Melanocytes in DOPA staining were observed. The expression level of markers in MCs was detected by qRT-PCR and the percentage of MCs and KCs were detected by flow cytometry. Cells derived from normal skin tissues mainly included KCs, MCs, and fibroblasts. There were significant differences between the percentage of KC, MC, fibroblasts (P < 0.05), and the expression of Microphthalmia-associated transcription factor (P < 0.05) and Tyrosinase-related protein-2 (P < 0.05) in the second, 10th, 20th, and 30th day. Significant differences were also found between the average numbers of MC stained by DOPA (P < 0.05) and the average percentage of MCs in the 10th, 20th, and 30th Day (P < 0.05). But there were no significant differences between the average percentage of KCs in the 10th, 20th, and 30th Day (P > 0.05) detected by flow cytometry. The number of MCs co-cultured with KCs in vitro reached the maximum in the 20th Day and this co-cultured model may contribute to the growth of MCs which could be used in the treatment of vitiligo.
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Affiliation(s)
- Chengzhong Zhang
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Le Zhou
- Department of Dermatology, Wuxi Branch of Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Wuxi, China
| | - Jie Huang
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xingyu Mei
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Zhouwei Wu
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Weimin Shi
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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El-Husseini A, Aghil A, Ramirez J, Sawaya B, Rajagopalan N, Baz M, Mei X, Davenport DL, Gedaly R. Outcome of kidney transplant in primary, repeat, and kidney-after-nonrenal solid-organ transplantation: 15-year analysis of recent UNOS database. Clin Transplant 2017; 31. [DOI: 10.1111/ctr.13108] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2017] [Indexed: 01/17/2023]
Affiliation(s)
- A. El-Husseini
- Division of Nephrology; University of Kentucky; Lexington KY USA
- Division of Nephrology; Mansoura University; Mansoura Egypt
| | - A. Aghil
- Division of Nephrology; University of Kentucky; Lexington KY USA
| | - J. Ramirez
- Division of Nephrology; University of Kentucky; Lexington KY USA
| | - B. Sawaya
- Division of Nephrology; University of Kentucky; Lexington KY USA
| | - N. Rajagopalan
- Division of Cardiology; University of Kentucky; Lexington KY USA
| | - M. Baz
- Transplant Center; University of Kentucky; Lexington KY USA
| | - X. Mei
- Transplant Center; University of Kentucky; Lexington KY USA
| | - D. L. Davenport
- Department of Surgery; University of Kentucky; Lexington KY USA
| | - R. Gedaly
- Transplant Center; University of Kentucky; Lexington KY USA
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Zhang C, Zhang C, Huang J, Wu Z, Mei X, Shi W. Prevalence and genotype distribution of human papillomavirus among females in the suburb of Shanghai, China. J Med Virol 2017; 90:157-164. [PMID: 28700089 DOI: 10.1002/jmv.24899] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 07/04/2017] [Indexed: 12/11/2022]
Abstract
To describe the prevalence of human papillomavirus (HPV) and its genotype distribution among females in the suburb of Shanghai. A total of 33 562 participants were enrolled in this study from January to December 2016. HPV GenoArray test kit was used to perform HPV genotyping and was also used in DNA amplification and HybriBio's proprietary flow-through hybridization technique. The overall prevalence of HPV was 18.98% and the top ten genotypes of HPV infection were HPV 16 (3.36%), HPV 58 (2.65%), HPV 52 (2.48%), HPV 51 (1.58%), HPV 54 (1.40%), HPV 68 (1.32%), HPV 18 (1.23%), HPV 6 (1.15%), HPV 56 (1.10%), and HPV 33 (1.07%). Single infection (4749, 14.15%) was the most common types among all the infected cases. Significant differences were found among age groups and month groups in terms of simple and multiple infection (P < 0.05), pure HR, LR and mixed HPV infection (P < 0.05). The prevalence of HR and LR HPV infection among females in the suburb of Shanghai is high, prevalence of single and multiple infection, pure HR, LR and mixed infection is correlated with the age and month.
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Affiliation(s)
- Chengzhong Zhang
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Chao Zhang
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Department of Dermatology, Shanghai Songjiang Jiuting Hospital, Shanghai, China
| | - Jie Huang
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Zhouwei Wu
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xingyu Mei
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Weimin Shi
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Luo J, Jin K, Chen X, Yang Z, Zhang L, Mei X, Ma J, Zhang Z, Shao Z, Yu X, Guo X. Internal Mammary Node Irradiation Improves Survival for Patients with Clinical Stage II-III Breast Cancer and Treated with Neoadjuvant Chemotherapy. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.535] [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: 11/27/2022]
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Du X, Jornten Karlsson M, Xu Y, Guo J, Li J, Mei X, Han L, Wang J, Shen Z, Ryden A, Ahlqvist M, Sunden M, Karlson B, Ma C. GW28-e0740 eHelp China, a randomised trial evaluating the effect of a smart phone-based patient support tool on treatment duration in patients prescribed rosuvastatin in China. J Am Coll Cardiol 2017. [DOI: 10.1016/j.jacc.2017.07.095] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Karlson BW, Jörntén-Karlsson M, Xu Y, Guo J, Li J, Mei X, Han L, Wang J, Li J, Shen Z, Ryden A, Ahlqvist M, Sunden M, Du X, Ma C. Rationale, design, and baseline characteristics of a randomised trial evaluating the effect of a smart phone based patient support tool on treatment duration in patients prescribed rosuvastatin in china (EHELP China). Atherosclerosis 2017. [DOI: 10.1016/j.atherosclerosis.2017.06.803] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Middleton K, Al-Dujaili S, Mei X, Günther A, You L. Microfluidic co-culture platform for investigating osteocyte-osteoclast signalling during fluid shear stress mechanostimulation. J Biomech 2017; 59:35-42. [PMID: 28552413 DOI: 10.1016/j.jbiomech.2017.05.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 05/12/2017] [Accepted: 05/13/2017] [Indexed: 11/30/2022]
Abstract
Bone cells exist in a complex environment where they are constantly exposed to numerous dynamic biochemical and mechanical stimuli. These stimuli regulate bone cells that are involved in various bone disorders, such as osteoporosis. Knowledge of how these stimuli affect bone cells have been utilised to develop various treatments, such as pharmaceuticals, hormone therapy, and exercise. To investigate the role that bone loading has on these disorders in vitro, bone cell mechanotransduction studies are typically performed using parallel plate flow chambers (PPFC). However, these chambers do not allow for dynamic cellular interactions among different cell populations to be investigated. We present a microfluidic approach that exposes different cell populations, which are located at physiologically relevant distances within adjacent channels, to different levels of fluid shear stress, and promotes cell-cell communication between the different channels. We employed this microfluidic system to assess mechanically regulated osteocyte-osteoclast communication. Osteoclast precursors (RAW264.7 cells) responded to cytokine gradients (e.g., RANKL, OPG, PGE-2) developed by both mechanically stimulated (fOCY) and unstimulated (nOCY) osteocyte-like MLO-Y4 cells simultaneously. Specifically, we observed increased osteoclast precursor cell densities and osteoclast differentiation towards nOCY. We also used this system to show an increased mechanoresponse of osteocytes when in co-culture with osteoclasts. We envision broad applicability of the presented approach for microfluidic perfusion co-culture of multiple cell types in the presence of fluid flow stimulation, and as a tool to investigate osteocyte mechanotransduction, as well as bone metastasis extravasation. This system could also be applied to any multi-cell population cross-talk studies that are typically performed using PPFCs (e.g. endothelial cells, smooth muscle cells, and fibroblasts).
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Affiliation(s)
- K Middleton
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, 164 College Street, Toronto, Ontario M5S 3G9, Canada
| | - S Al-Dujaili
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, 164 College Street, Toronto, Ontario M5S 3G9, Canada
| | - X Mei
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario M5S 3G8, Canada
| | - A Günther
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, 164 College Street, Toronto, Ontario M5S 3G9, Canada; Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario M5S 3G8, Canada
| | - L You
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, 164 College Street, Toronto, Ontario M5S 3G9, Canada; Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario M5S 3G8, Canada.
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Mei X. P08.07 Glioblastoma stem cell differentiation into endothelial cells: evidenced through live cell imaging. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.197] [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: 11/14/2022] Open
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Wu Z, Mei X, Ying Z, Sun Y, Song J, Shi W. Ultraviolet B inhibition of DNMT1 activity via AhR activation dependent SIRT1 suppression in CD4+ T cells from systemic lupus erythematosus patients. J Dermatol Sci 2017; 86:230-237. [PMID: 28336124 DOI: 10.1016/j.jdermsci.2017.03.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 02/22/2017] [Accepted: 03/08/2017] [Indexed: 12/01/2022]
Abstract
BACKGROUND Previous studies have reported that ultraviolet B (UVB) inhibits DNA methyltransferase1 (DNMT1) activity in CD4+ T cells from systemic lupus erythematosus (SLE) patients. Silent mating type information regulation 2 homolog 1 (SIRT1) is a type of Class III histone deacetylases (HDACs), and has been reported to play roles in the pathogenesis of different autoimmune diseases and can modulate DNMT1 activity. Moreover, aryl hydrocarbon receptor (AhR) has been reported to link UVB with SLE. However, the exact mechanisms by which DNMT1 activity is inhibited by UVB in lupus CD4+ T cells remain largely unknown. OBJECTIVE To elucidate the exact mechanisms by which DNMT1 activity is inhibited by UVB in lupus CD4+ T cells. METHODS Twenty-two newly diagnosed active SLE patients and 30 healthy controls were enrolled in the study. CD4+ T cells were isolated, cultured and treated. DNMT1 activity assay, quantitative real-time PCR (qRT-PCR), Western blotting, RNA interference using small interfering RNA and Chromatin Immunoprecipitation (ChIP) assay were employed. RESULTS DNMT1 activity was inhibited in si-SIRT1-transfected CD4+ T cells, and increased by the established SIRT1 activator, SRT1720. Moreover, the mRNA and protein expression of SIRT1 were suppressed by UVB exposure in lupus CD4+ T cells. UVB-inhibited DNMT1 activity was reversed by SRT1720 in si-control-transfected lupus CD4+ T cells, but not in si-SIRT1-transfected lupus CD4 + T cells. Furthermore, AhR activation by VAF347 reduced the mRNA and protein expression of SIRT1. ChIP using an antibody against AhR in normal CD4+ T cells revealed a 16-fold stronger signal at the site about 1.6kb upstream from the translation start site of the SIRT1 promoter. Finally, UVB could activate AhR and inhibit the mRNA and protein expression of SIRT1. AhR knockdown abrogated the inhibition of UVB-mediated SIRT1 mRNA and protein expression and DNMT1 activity in lupus CD4+ T cells. CONCLUSION UVB suppressed SIRT1 expression via activating AhR, and subsequently inhibited DNMT1 activity in CD4+ T cells from SLE patients.
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Affiliation(s)
- Zhouwei Wu
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China.
| | - Xingyu Mei
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Zuolin Ying
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Yue Sun
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Jun Song
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Weimin Shi
- Department of Dermatology, Shanghai First People's Hospital, Shanghai Jiaotong University, Shanghai, China.
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Chen Y, Mei X. P08.29 Histologic study of microcirculation patterns in human glioblastoma. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now188.162] [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: 11/13/2022] Open
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46
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Zhou Z, Luo J, Chen X, Yang Z, Ma J, Mei X, Zhang L, Hu Q, Guo X, Yu X. The Impact of Pathological Response of Primary Tumor in Patients With Locally Advanced Breast Cancer Who Reached Axillary Pathological Complete Response (pCR) After Neoadjuvant Chemotherapy. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.700] [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: 11/30/2022]
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47
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Yang Z, Yu X, Mei X, Guo X, Ma J. Clinical Results of Phase 2 Study of Whole-Breast Irradiation With Simultaneously Integrated Tumor Bed Boost (WBI-SIB): A Single-Center Experience. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.631] [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: 11/29/2022]
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Ma J, Mei X, Yang Z, Yu X, Zhang Z, Guo X. Locoregional Control Following Salvage Irradiation in Women With Isolated Locoregional Recurrence After Mastectomy Alone. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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49
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Hu Q, Mei X, Feng Y, Ma J, Yang Z, Shao Z, Yu X, Guo X. Early Local Recurrence Presents Adverse Effect on Outcomes of Primary Breast Sarcoma: A Retrospective Study From Single-Institute. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.2153] [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: 10/22/2022]
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50
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Zhang L, Zhou Z, Yu X, Mei X, Yang Z, Chen X, Guo X. Intraoperative Radiation Therapy Versus Whole-Breast External Beam Radiation Therapy in Early-Stage Breast Cancer: A Systematic Review and Meta-Analysis. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.569] [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: 11/26/2022]
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