1
|
Meng N, Gong Y, Jin YL, Sun YQ, Zhang HX, Tian YP. [Study on clearance of chlorfenapyr via blood purification (a case analysis)]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:840-843. [PMID: 38073212 DOI: 10.3760/cma.j.cn121094-20230328-00098] [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: 12/18/2023]
Abstract
This paper analyzed the clinical data of a patient with acute oral emamectin·chlorfenapyr poisoning, and discussed the effect of blood purification therapy on chlorfenapyr poisoning. Chlorfenapyr was detected in the blood, urine, ultrafiltrate and plasma exchange fluid of the patient, and the concentrations of chlorfenapyr poison gradually decreased with time. Blood purification has a certain effect on chlorfenapyr, and early blood purification may be an effective measure to treat chlorfenapyr poisoning.
Collapse
Affiliation(s)
- N Meng
- Department of Emergency Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Y Gong
- Department of Emergency Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Y L Jin
- Department of Emergency Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Y Q Sun
- Department of Emergency Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - H X Zhang
- Department of Emergency Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Y P Tian
- Department of Emergency Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| |
Collapse
|
2
|
Meng N, Yang H, Chen J, Qin Y, Lei Y, Huang Z, Tang G. [Honokiol reduces oxidative stress by activating the SIRT3-MnSOD2 pathway to alleviate hypertriglyceridemia-induced acute pancreatitis in rats]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:405-411. [PMID: 37087585 PMCID: PMC10122730 DOI: 10.12122/j.issn.1673-4254.2023.03.10] [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: 04/24/2023]
Abstract
OBJECTIVE To determine how honokiol affects the sirtuin-3 (SIRT3)-MnSOD2 pathway and oxidative stress in rats with hypertriglyceridemia-induced acute pancreatitis (HTGP). METHODS Thirty 4-week-old male SD rats were randomly divided into two groups for normal feeding and high-fat feeding for 4 weeks, after which the rats with normal feeding were randomized into control group and acute pancreatitis (AP) group (n=6), and those with high-fat feeding were divided into hypertriglyceridemia group, HTGP group, and honokiol treatment group (n=6). In AP, HTGP, and honokiol groups, AP models were established by intraperitoneal injection of cerulean; in honokiol group, the rats received an intraperitoneal injection of 5 mg/kg honokiol 15 min after cerulean injection. Serum TG, IL-6, and TNF-α levels were measured 24 h after the treatments, and pathological changes in the pancreas were observed with HE staining; The levels of reactive oxygen species (ROS), malondialdehyde (MDA), and glutathione peroxidase (GSH) were measured, and SIRT3 and manganese superoxide dismutase (MnSOD2) expressions were detected using Western blotting and immunohistochemistry. Transmission electron microscopy was used to examine the ultrastructure of pancreatic acinar cells and mitochondria. RESULTS Compared with the those with normal feeding, the rats with high-fat feeding had significantly elevated serum TG level (P < 0.05). The rat models of AP showed significantly increased serum levels of IL-6, TNF-α, and MDA and decreased GSH level and expressions of SIRT3 and MnSOD2, with obvious edema and inflammatory cell infiltration and enhanced ROS fluorescence intensity in the pancreas and ultrastructural damages of the acinar cells and mitochondria. In rats with HTGP, honokiol treatment significantly decreased serum levels of IL-6, TNF-α, and MDA, increased GSH level and SIRT3 and MnSOD2 expressions, reduced ROS production, and alleviated ultrastructural damage of the acinar cells and mitochondria in the pancreas. CONCLUSION Honokiol reduce oxidative stress and alleviates pancreatic injuries in HTGP rats possibly by activating the SIRT3-MnSOD2 pathway.
Collapse
Affiliation(s)
- N Meng
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - H Yang
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - J Chen
- Endoscopy Center, Tumor Hospital of Guangxi Medical University, Nanning 530021, China
| | - Y Qin
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Y Lei
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Z Huang
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - G Tang
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| |
Collapse
|
3
|
Yu J, Qin C, Huang S, Ye X, Meng N. TREATMENT OF GIANT JUVENILE BREAST FIBROADENOMA BY SINGLE HOLE BREAST ENDOSCOPY: A CASE REPORT. Acta Endocrinol (Buchar) 2021; 17:552-553. [PMID: 35747870 PMCID: PMC9206158 DOI: 10.4183/aeb.2021.552] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
| | | | | | | | - N. Meng
- Correspondence to: Ning Meng MD, Hangzhou Normal University Affiliated Hospital, Department of Thyroid and Breast Surgery, No. 126 Wenzhou Road, Gongshu District, Hangzhou, Zhejiang, 310015, China, E-mail:
| |
Collapse
|
4
|
Guo N, Zhou LX, Meng N, Shi YP. Associations of oral and intestinal florae and serum inflammatory factors with pathogenesis of oral cancer. Eur Rev Med Pharmacol Sci 2021; 24:11090-11095. [PMID: 33215425 DOI: 10.26355/eurrev_202011_23595] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to explore the effects of oral and intestinal florae and serum inflammatory factors on the pathogenesis of oral cancer. PATIENTS AND METHODS Oral cancer patients and healthy subjects in our hospital were enrolled in disease group (n=50) and control group (n=50), respectively. Oral flora of subjects was collected using the sterile cotton swab. Microbial deoxyribonucleic acid (DNA) was extracted for Polymerase Chain Reaction (PCR) amplification and sequencing. Subsequently, the feces were also collected from patients, and sent to the company for analysis of microbial composition via sequencing. In addition, the levels of serum inflammatory factors tumor necrosis factor-α (TNF-α), interleukin-8 (IL-8), IL-6, and IL-1β in disease group and control group were detected via enzyme-linked immunosorbent assay (ELISA). RESULTS The number of patients with a history of drinking (p=0.040) and betel nut chewing (p=0.000) in the disease group was larger than that in the control group, and the difference was statistically significant. In terms of oral flora distribution, the ratios of dominant bacteria Staphylococcus and Rothia were 64% and 50% in disease group, which were significantly higher than those in the control group (24% and 18%) (p=0.023 and 0.034). In terms of intestinal flora distribution, the abundance of intestinal florae (Flavobacteriaceae, Sphingobacteriales, Rikenella, Pseudomonadales, Tetragenococcus and Acinetobacter) in the disease group was remarkably higher than that in the control group (p<0.05). However, the abundance of Vagococcus and Pediococcus in control group was significantly higher than that in the disease group (p<0.05). Among intestinal flora, Firmicutes exhibited a highly positive correlation with Bacteroides (r=0.341, p=0.023), and a highly negative correlation with Ruminococcus (r=-0.832, p=0.000). Bacteroides had a highly negative correlation with Lactobacillus (r=-0.763, p=0.000) and Enterococcus (r=-0.461, p=0.000). In disease group, the levels of TNF-α (p=0.021), IL-8 (p=0.000), and IL-1β (p=0.000) were evidently higher than those in the control group [(23.51±2.14) ng/L vs. (12.34±2.45) ng/L, (89.75±4.29) ng/L vs. (43.23±3.25) ng/L, (42.25±3.25) ng/L vs. (15.32±1.47) ng/L]. However, there was no statistically significant difference in IL-6 level between the two groups (p=0.217). CONCLUSIONS Oral and intestinal florae and serum inflammatory factors are associated with the pathogenesis of oral cancer.
Collapse
Affiliation(s)
- N Guo
- Department of Dental, Liaocheng People's Hospital, Liaocheng, China.
| | | | | | | |
Collapse
|
5
|
Liu Z, Mi F, Han M, Tian M, Deng L, Meng N, Luo J, Fu R. Bone marrow-derived mesenchymal stem cells inhibit CD8 + T cell immune responses via PD-1/PD-L1 pathway in multiple myeloma. Clin Exp Immunol 2021; 205:53-62. [PMID: 33735518 DOI: 10.1111/cei.13594] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 02/03/2021] [Accepted: 02/21/2021] [Indexed: 12/19/2022] Open
Abstract
High expression of the inhibitory receptor programmed cell death ligand 1 (PD-L1) on tumor cells and tumor stromal cells have been found to play a key role in tumor immune evasion in several human malignancies. However, the expression of PD-L1 on bone marrow mesenchymal stem cells (BMSCs) and whether the programmed cell death 1 (PD-1)/PD-L1 signal pathway is involved in the BMSCs versus T cell immune response in multiple myeloma (MM) remains poorly defined. In this study, we explored the expression of PD-L1 on BMSCs from newly diagnosed MM (NDMM) patients and the role of PD-1/PD-L1 pathway in BMSC-mediated regulation of CD8+ T cells. The data showed that the expression of PD-L1 on BMSCs in NDMM patients was significantly increased compared to that in normal controls (NC) (18·81 ± 1·61 versus 2·78± 0·70%; P < 0·001). Furthermore, the PD-1 expression on CD8+ T cells with NDMM patients was significantly higher than that in normal controls (43·22 ± 2·98 versus 20·71 ± 1·08%; P < 0·001). However, there was no significant difference in PD-1 expression of CD4+ T cells and natural killer (NK) cells between the NDMM and NC groups. Additionally, the co-culture assays revealed that BMSCs significantly suppressed CD8+ T cell function. However, the PD-L1 inhibitor effectively reversed BMSC-mediated suppression in CD8+ T cells. We also found that the combination of PD-L1 inhibitor and pomalidomide can further enhance the killing effect of CD8+ T cells on MM cells. In summary, our findings demonstrated that BMSCs in patients with MM may induce apoptosis of CD8+ T cells through the PD-1/PD-L1 axis and inhibit the release of perforin and granzyme B from CD8+ T cells to promote the immune escape of MM.
Collapse
Affiliation(s)
- Z Liu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - F Mi
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - M Han
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - M Tian
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - L Deng
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - N Meng
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - J Luo
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - R Fu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| |
Collapse
|
6
|
Liao W, Lin S, Meng N, Tin H, Tsai S, Huang Y. 1134 Light Exposure At Daytime On Sleep Quality In Stroke Patient During Rehabilitation. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1128] [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: 11/13/2022] Open
Abstract
Abstract
Introduction
Lights maintain the day and night rhythm to set patients’ “wake-up cycle” and to stabilize their physiological functions, which may be expected to improve sleep. This study was aimed to investigate the relations between sleep quality and daytime light exposure in stroke patient during rehabilitation.
Methods
A cross-sectional study design was adopted and 120 stroke patients were recruited from rehabilitation wards of two medical centers and 116 patients completed this study. Research instruments including the Pittsburgh Sleep Quality Index, Epworth Sleepiness Scale, Sleep Log, and Somnowatch (Germany) for actigaphy sleep and light were used to collect data and urinary melatonin concentration were measured.
Results
47.4% of the patients had poor sleep quality (PSQI>5), 74.1% had actigraphic sleep efficiency less than 85%, and 90.5% waked more than 30 minutes after sleep onset. The average exposure time at lower level light (≤149 lux) were 288.8 minutes, accounting for 48% of the day (8:00-18:00). Compared to lower light exposure group (less than 319.5 min at >150 lux), those who exposed to higher level light (more than 319.5 min at >150 lux) had increased 52.1 minutes in actigraphic total sleep time (TST, t=-2.134, p=0.035), increased 8% in actigraphic sleep efficiency (SE, t=-2.053, p=0.042), and decreased 41.1 minutes in actigraphic wake-after-sleep-onset (WASO, t=2.209, p=0.029). Urinary melatonin concentration increased 52.7 pg/ml, but not statistically significant (t=-1.277, p=0.205). Result of multiple regression analysis showed that after controlling for age, gender, post-stroke complications, and environmental interference, time of bright light exposure significantly affected subjective sleep satisfaction (p=0.014), TST (p=0.04), SE (p=0.041), and WASO (p=0.026).
Conclusion
Increasing time of bright illumination (≥150 lux) during daytime may improve sleep quality. Results of this study provide empirical references for non-drug intervention to improve sleep quality in patients with stroke.
Support
This study was supported by the Ministry of Science and Technology, MOST 105-2628-B-040 -005 -MY2.
Collapse
Affiliation(s)
- W Liao
- China Medical University, Taichung, TAIWAN
| | - S Lin
- China Medical University Hospital, Taichung, TAIWAN
| | - N Meng
- China Medical University Hospital, Taichung, TAIWAN
| | - H Tin
- Chun Shan Medical University Hospital, Taichung, TAIWAN
| | - S Tsai
- Chun Shan Medical University Hospital, Taichung, TAIWAN
| | - Y Huang
- Chun Shan Medical University Hospital, Taichung, TAIWAN
| |
Collapse
|
7
|
Meng Y, Wang Y, Lou H, Wang K, Meng N, Zhang L, Wang C. Specific immunoglobulin E in nasal secretions for the diagnosis of local allergic rhinitis. Rhinology 2019; 57:313-320. [PMID: 31129685 DOI: 10.4193/rhin18.292] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND The diagnostic value of serum specific Immunoglobulin E (sIgE) and nasal allergen provocation test (NAPT) has been well investigated in local allergic rhinitis (LAR). We hypothesized that nasal local sIgE could be used for the diagnosis of LAR instead of NAPT. METHODS This was a prospective single center study. Overall, 212 chronic rhinitis patients were screened, of whom 73 were recruited based on negative findings for serum IgE and positive findings for local eosinophils. Ten healthy subjects were also recruited as controls. All participants completed questionnaires at recruitment to record their demographic data, nasal symptom severity, and physician-diagnosed comorbid asthma. Symptom severity was recorded using a visual analogue scale (VAS) of 10 cm and allergic status was assessed by serum sIgE. Nasal secretions were collected for analysis of local sIgE and eosinophils, and NAPT was performed for confirmation of LAR. RESULTS Overall, 14 patients demonstrated positive local sIgE results. Twelve of these patients had significantly higher local sIgE levels compared to controls, and also demonstrated positive NAPT results. The VAS scores, nasal airway resistance measured by active rhinomanometry, and the levels of local sIgE, ECP, histamine and leukotriene C4 were significantly increased from baseline values following NAPT. Sensitivity, specificity, and diagnostic accuracy of local sIgE for diagnosis of LAR were 91.7% respectively. CONCLUSIONS The measurement of local sIgE levels in nasal secretion is a reliable and effective diagnostic method for LAR.
Collapse
Affiliation(s)
- Y Meng
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing 100730, China
| | - Y Wang
- Beijing Key Laboratory of nasal diseases, Beijing Institute of Otolaryngology, Beijing 100005, China
| | - H Lou
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing 100730, China
| | - K Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing 100730, China
| | - N Meng
- Beijing Key Laboratory of nasal diseases, Beijing Institute of Otolaryngology, Beijing 100005, China
| | - L Zhang
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing 100730, China; Beijing Key Laboratory of nasal diseases, Beijing Institute of Otolaryngology, Beijing 100005, China; Department of Allergy, B
| | - C Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing 100730, China
| |
Collapse
|
8
|
Sun HT, Yang RJ, Jiang P, Jiang WJ, Li JN, Meng N, Wang JJ. [Dosimetric analysis of volumetric modulated arc therapy and intensity modulated radiotherapy for patients undergone breast-conserving operation]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:188-192. [PMID: 29483745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To compare the dosimetric differences between volumetric modulated arc therapy and intensity modulated radiotherapy for breast cancer patients after breast-conserving surgery. METHODS Ten patients who received radiotherapy after breast-conserving surgery were selected. Eclipse planning system was used to design volumetric rotating intensity-modulated (2F-RapidArc) and two field intensity-modulated radiation therapy (2F-IMRT) planning for each patient. 2F-RapidArc plans were made using two partial arcs with gantry rotation from 287°-293° to 152°-162°, and 0° to 90 ° was avoidance sector. The gantry angle of 2F-IMRT were 301°-311° and 125°-135°. The prescription dose was 46 Gy/23 fractions. All plans required 95% of the target volume receiving the prescription dose. The dose distribution of the target, organs at risk, machine unit (MU) and treatment time were compared. RESULTS 2F-RapidArc and 2F-IMRT plans' uniformity index was 1.12±0.02 and 1.11±0.03 (P=0.282), respectively; conformal index was 0.80±0.03 and 0.65±0.04 (P<0.001), respectively. V110 of plan target volume was 20.98%±14.47% and 10.43%±10.49% (P=0.030), respectively. Compared with the 2F-IMRT, 2F-RapidArc plans had a higher dosimetric parameters for left lung: V5 (48.06%±17.32% vs. 24.23%±6.56%,P=0.001), V10 (28.89±9.28 vs.17.07±4.78%,P=0.004), Dmean [(9.70±2.14) Gy vs. (6.86±1.77) Gy, P=0.002], increased the double lung: V5 (22.85%±7.55% vs. 11.01%± 2.95%,P=0.001), V10 (13.16%±4.33% vs. 7.76%± 2.16%, P=0.006), Dmean [(4.66±0.95) Gy vs. (3.17±0.82) Gy, P=0.001], reduced the left lung: V40 (3.58%±1.46% vs. 6.19%±3.04%, P=0.006), reduced the double lung: V40 (1.61%±0.64% vs. 2.81%± 1.39%,P=0.005), increased cardiac: V5 (39.3%±17.19% vs. 8.79%±4.24%, P<0.001), V10 (21.31%±13.8% vs. 5.73%±3.42%, P=0.002), V20 (7.80%±6.08% vs. 4.05%±2.85%,P=0.018), Dmean [(0.64±0.25) Gy vs. (0.29±1.39) Gy,P<0.001],reduced the heart: V40(0.50%±0.40% vs. 1.86%±1.94%,P=0.037),increased the contralateral breast Dmean [(1.63±1.26) Gy vs. (0.09±0.05) Gy, P=0.004]. Compared with 2F-IMRTplan, 2F-RapidArc increased the treatment time [(132.9±7.2) s vs. (140.3±11.6) s, P=0.030]. Both the machine units were almost the same [(467.0±30.4) MU vs. (494.7±44.9) MU, P=0.094]. CONCLUSION Both 2F-RapidArc and 2F-IMRT plans could reach the clinical requirements. 2F-RapidArc had a better conformal index, reduced the high dose area, but increased the low dose regions of the lung, heart, body area, and increased the average dose of the contralateral breast. The treatment time of 2F-RapidArc was longer than that of 2F-IMRT, and the MU of 2F-RapidArc and 2F-IMRT plans were almost the same.
Collapse
Affiliation(s)
- H T Sun
- Department of Cancer Radiation, Peking University Third Hospital, Beijing 100191, China
| | - R J Yang
- Department of Cancer Radiation, Peking University Third Hospital, Beijing 100191, China
| | - P Jiang
- Department of Cancer Radiation, Peking University Third Hospital, Beijing 100191, China
| | - W J Jiang
- Department of Cancer Radiation, Peking University Third Hospital, Beijing 100191, China
| | - J N Li
- Department of Cancer Radiation, Peking University Third Hospital, Beijing 100191, China
| | - N Meng
- Department of Cancer Radiation, Peking University Third Hospital, Beijing 100191, China
| | - J J Wang
- Department of Cancer Radiation, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
9
|
Jiao J, Duan S, Meng N, Li Y, Fan E, Zhang L. Role of IFN-γ, IL-13, and IL-17 on mucociliary differentiation of nasal epithelial cells in chronic rhinosinusitis with nasal polyps. Clin Exp Allergy 2016; 46:449-60. [PMID: 26399381 DOI: 10.1111/cea.12644] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 07/25/2015] [Accepted: 08/12/2015] [Indexed: 12/15/2022]
Abstract
BACKGROUND Mucociliary dysfunction is a prominent pathophysiological feature of chronic rhinosinusitis with nasal polyps (CRSwNP); however, the precise mechanisms underlying mucociliary dysfunction are still unclear. OBJECTIVE The aim of this study was therefore to evaluate the effects of IFN-γ, IL-13, and IL-17 on human nasal mucociliary differentiation and ciliary beat frequency (CBF) in patients with CRSwNP. METHODS Human nasal epithelial cells from tissue of patients with CRSwNP and control subjects were established as air-liquid interface (ALI) primary cultures. Confluent cultures were incubated with10 ng/mL each of IFN-γ, IL-13, or IL-17 for 14 days and assessed for expression of specific morphological markers and factors associated with mucociliary differentiation, the percentage of ciliated and goblet cells, and CBF. RESULTS In comparison with control subjects, percentage of ciliated cells and CBF were decreased; while percentage of goblet cells, FOXJ1, and MUC5AC mRNA expression were increased in nasal polyp-derived epithelial cultures. Treatment with IFN-γ and IL-13 significantly decreased the expression of β-tubulin IV (specific cilia marker), ciliated cell number, and expression of FOXJ1 and DNAI2, in epithelial cultures derived from both CRSwNP patients and control subjects. Furthermore, while both IFN-γ and IL-13 treatment significantly decreased the CBF of cells from both CRSwNP patients and control subjects, IL-13 additionally significantly increased goblet cell number and the expression of MUC5AC and CLCA1, in these cultures. IL-17 treatment did not significantly affect ciliated or goblet cell differentiation, CBF, nor MUC5AC and CLCA1 expression, but increased both MUC5B mRNA and protein expression in these cultures. CONCLUSION AND CLINICAL RELEVANCE The demonstration that IFN-γ and IL-13 both significantly reduce ciliated cell differentiation and CBF in CRSwNP patients, and IL-13 additionally induces significant goblet cell hyperplasia and MUC5AC mucin expression, as well as IL-17 significantly increases MUC5B mucin expression, suggests that these inflammatory cytokines may be potential therapeutic targets in the management of CRSwNP.
Collapse
Affiliation(s)
- J Jiao
- Department of Otolaryngology, Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing, China
| | - S Duan
- Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing, China.,Department of Allergy, Beijing TongRen Hospital, Capital Medical University, Beijing, China
| | - N Meng
- Department of Otolaryngology, Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing, China
| | - Y Li
- Department of Otolaryngology, Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing, China
| | - E Fan
- Department of Otolaryngology, Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing, China
| | - L Zhang
- Department of Otolaryngology, Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing, China.,Department of Allergy, Beijing TongRen Hospital, Capital Medical University, Beijing, China
| |
Collapse
|
10
|
Zhao N, Yang R, Wang J, Zhang X, Jiang W, Li J, Jiang P, Meng N. EP-1567: A Hybrid IMRT/VMAT technique for the treatment of non-small cell lung cancer. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)41559-2] [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: 12/01/2022]
|
11
|
Meng N, Peng N, Huang S, Wang SQ, Zhao J, Su L, Zhang Y, Zhang S, Zhao B, Miao J. Heterogeneous nuclear ribonucleoprotein E1 regulates protein disulphide isomerase translation in oxidized low-density lipoprotein-activated endothelial cells. Acta Physiol (Oxf) 2015; 213:664-75. [PMID: 25389050 DOI: 10.1111/apha.12422] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 09/17/2014] [Accepted: 11/05/2014] [Indexed: 12/16/2022]
Abstract
AIMS Endothelium-derived protein disulphide isomerase (PDI) is required for thrombus formation in vivo. But, how to control PDI overproduction in oxidized low-density lipoprotein (oxLDL)-activated vascular endothelial cells (VECs) is not well understood. In this study, we try to answer this question using our newly identified activator of mTOC1 3-benzyl-5-((2-nitrophenoxy) methyl)-dihydrofuran-2 (3H)-one (3BDO) that has been shown to protect VECs. METHODS First, we performed a proteomics analysis on the oxLDL-activated vascular VECs in the presence or absence of 3BDO. Next, we constructed the heterogeneous nuclear ribonucleoprotein E1 (hnRNP E1) mutants at Ser43 and used the RNA-ChIP technique to investigate the relationship between hnRNP E1 and PDI production. Furthermore, we examined the effect of 3BDO on oxLDL-altered phosphorylation of Akt1 and Akt2. Finally, we studied the effect of 3BDO on oxLDL-altered PDI protein level in apolipoprotein E(-/-) mice with advanced atherosclerosis. RESULTS In VECs, oxLDL-increased PDI protein level, induced hnRNP E1 phosphorylation at Ser43, suppressed the binding of hnRNP E1 to PDI 5'UTR and induced the phosphorylation of Akt2 but not Akt1. All of these processes were blocked by 3BDO. Importantly, Ser43 mutant of hnRNP E1 inhibited the increase of PDI protein level and the decrease of the binding of hnRNP E1 and PDI 5'UTR induced by oxLDL. Furthermore, 3BDO suppressed oxLDL-induced PDI protein increase in the serum and plaque endothelium of apolipoprotein E(-/-) mice. CONCLUSION hnRNP E1 is a new regulator of PDI translation in oxLDL-activated VECs, and 3BDO is a powerful agent for controlling PDI overproduction.
Collapse
Affiliation(s)
- N. Meng
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan China
- School of Biological Science and Technology; University of Jinan; Jinan China
| | - N. Peng
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan China
| | - S. Huang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan China
| | - S. Q. Wang
- Institute of Organic Chemistry; School of Chemistry and Chemical Engineering; Shandong University; Jinan China
| | - J. Zhao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan China
| | - L. Su
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan China
| | - Y. Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research; Chinese Ministry of Education and Chinese Ministry of Health; Shandong University Qilu Hospital; Jinan China
| | - S. Zhang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan China
| | - B. Zhao
- Institute of Organic Chemistry; School of Chemistry and Chemical Engineering; Shandong University; Jinan China
| | - J. Miao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan China
- The Key Laboratory of Cardiovascular Remodeling and Function Research; Chinese Ministry of Education and Chinese Ministry of Health; Shandong University Qilu Hospital; Jinan China
| |
Collapse
|
12
|
Meng N, Zhang Y, Ma J, Li H, Zhou F, Qu Y. Association of polymorphisms of angiotensin I converting enzyme 2 with retinopathy in type 2 diabetes mellitus among Chinese individuals. Eye (Lond) 2014; 29:266-71. [PMID: 25359286 DOI: 10.1038/eye.2014.254] [Citation(s) in RCA: 13] [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: 05/11/2014] [Accepted: 09/23/2014] [Indexed: 12/29/2022] Open
Abstract
AIMS To examine the association of Angiotensin I converting enzyme 2 (ACE2) gene polymorphisms and retinopathy in a Chinese type 2 diabetes mellitus (T2DM) cohort. METHODS A total of 743 T2DM participants were involved in this study including 408 female and 335 male cases. Female cases were divided into two groups: diabetes without retinopathy (DNR group, n=171) and with retinopathy (DR group, n=237), the latter was further subclassified into nonproliferative DR (NPDR group, n=121) and proliferative DR (PDR group, n=116). Male cases were assigned to DNR group (n=153) and DR group (n=182) which was further grouped into NPDR group (n=86) and PDR group (n=96). Two single nucleotide polymorphisms (SNPs; rs2074192 and rs714205) in ACE2 gene were genotyped. RESULTS In female cases, the frequency of genotypes TT in rs2074192 and CC in rs714205 were higher in DR and PDR group than in DNR group (P<0.05). The frequency of alleles T in SNP rs2074192 and C in SNP rs714205 was higher in DR group (P<0.05) and PDR group (P<0.05) than in DNR group. The frequency of allele T in SNP rs2074192 was higher in PDR group (P=0.04) than in NPDR group. The frequency of haplotype TC and CG was higher in DR and PDR groups, respectively (P<0.05). No positive results were found in male cases. CONCLUSIONS Our results revealed that SNPs rs2074192 and rs714205 in ACE2 gene were associated with the susceptibility of DR and PDR.
Collapse
Affiliation(s)
- N Meng
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, China
| | - Y Zhang
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, China
| | - J Ma
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, China
| | - H Li
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, China
| | - F Zhou
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, China
| | - Y Qu
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, China
| |
Collapse
|
13
|
Zhang X, Yang R, Meng N, Li M, Wang J. EP-1589: A novel Hybrid Volumetric Modulated Arc Therapy (H-VMAT) technique for primary cervical spine malignant tumors. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31707-2] [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]
|
14
|
Lin L, Wang J, Jiang Y, Meng N, Tian S, Yang R, Liu C. EP-1947: CT-guided 125I seed implantation on treatment of recurrent soft tissue sarcoma after multimodal treatment. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)32065-x] [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]
|
15
|
Sun J, Wu J, Zhou N, Meng N, Lin Y. A prospective study of jaw odontogenic keratocyst treated by multidisciplinary sequential treatment. Int J Oral Maxillofac Surg 2009. [DOI: 10.1016/j.ijom.2009.03.494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
16
|
Abstract
Extracellular matrix (ECM) macromolecules are important for creating the cellular environments required during development and morphogenesis of tissues. Matrix metalloproteinases (MMPs) are a family of Zn-dependent endopeptidases that collectively are capable of cleaving virtually all ECM substrates, and play an important role in some physiological and pathological processes. MMP activity can be inhibited by some natural and artificial inhibitors. A newly found membrane-anchored regulator of MMPs, the reversion-inducing-cysteine-rich protein with kazal motifs (RECK), is downregulated when the cells undergo a process of malignant transformation, and is currently the subject of considerable research activity because of its specific structure and function. In this review, we have chosen to concentrate our efforts on the structure, function, regulation, and future prospect of RECK in order to provide a new target for prevention and treatment of tumours.
Collapse
Affiliation(s)
- N Meng
- Department of Surgery, The Forth Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | | | | | | |
Collapse
|
17
|
Huang C, Zhao J, Meng N. [Epidemiological features of injuries in middle and primary schools students of Hui and Han nationalities in Ningxia]. Zhonghua Liu Xing Bing Xue Za Zhi 2001; 22:252-5. [PMID: 11718061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
OBJECTIVE To find out the present situation and causes of injuries and risk factors of accidental injuries among students and to provide evidence for prevention and reduction of accidental injuries. METHODS A cluster sampling study on the situation of injuries was conducted in 21 civic middle and primary schools with 7,000 (6-19 years old) students during the December 1999 and November 2000 in Ningxia province. RESULTS Results showed that the total rate of injuries was 20.40% with boys higher than girls (P < 0.01). Five kinds of injuries took the leading place: injuries from falls (9.27%), bumps (4.55%), knive-cutting (2.99%), traffic accidents (2.00%) burns and scalds (1.66%). The rate of injuries was 22.11% in students of Hui nationality, higher than the ones in Han nationality (19.6%, P < 0.025). The rate of injuries among junior middle school students was the highest (24.11%), followed by high school students 22.15%, and primary students 17.63%. Causes, times, places, parts of the bodies and the treatment regarding injuries were analysed. CONCLUSION The challenge of accidental injuries in middle and primary school students was although serious but avoidable. Comprehensive preventive measures should be take actively and effectively.
Collapse
Affiliation(s)
- C Huang
- Ningxia Public Health and Anti-epidemic Station, Yinchuan 750004, China
| | | | | |
Collapse
|
18
|
Kuyama K, Yamamoto H, Morimoto M, Meng N, Liang Z, Kobayashi S. Comparison of occurrence of oro-maxillo-facial tumor types in different regions of the People's Republic of China. J Oral Sci 2000; 42:57-62. [PMID: 10989585 DOI: 10.2334/josnusd.42.57] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The frequencies of oro-maxillo-facial tumors, by type, seen at the Guangxi Medical College Hospital were surveyed in order to compare different regions of the People's Republic of China. Computer analysis was performed on data for all oro-maxillo-facial tumors, as confirmed by the hospital between 1957 and 1987, inclusive. The results were then used in a comparative study with those of five other medical colleges. Among a total of 4,052 cases, there were 1,593 benign tumors, 2,049 malignant tumors and 410 unknown tumors. Tumors derived from the epithelium were the most common type (42.0% of the total), whereas in the other five medical colleges the mean corresponding proportion was 27.8%, the difference being significant (p < 0.05). Epithelial tumors were also the most common type of malignant tumor (70.5% of the total), whereas the corresponding proportion reported by the other five institutions was 60.6%, which was also significantly different (p < 0.05). The proportion of malignant tumors among the total was more than 50.6%, which was higher than that reported by the other five colleges. This study shows that epithelium-derived tumors and malignant tumors were encountered more frequently at Guangxi Medical College than at the other five medical colleges in China.
Collapse
Affiliation(s)
- K Kuyama
- Department of Oral Pathology, Nihon University School of Dentistry at Matsudo, Chiba, Japan.
| | | | | | | | | | | |
Collapse
|
19
|
Abstract
Effects of inorganic arsenicals on DNA synthesis in unsensitized human blood lymphocytes were biphasic: The chemicals at very low concentrations enhanced DNA synthesis, whereas higher concentrations inhibited DNA synthesis. The concentrations of arsenicals at which the maximum stimulating effect was found were 1 x 10(-5) M, 1 x 10(-6) or 2 x 10(-6) M, and 0.8 x 10(-6) or 1 x 10(-6) M for sodium arsenite exposure of 1 h, 3 d, and 6 d, respectively; for sodium arsenate, 1 x 10(-5) M, 1 x 10(-5) M, and 2 x 10(-6) or 5 x 10(-6) M, respectively. Arsenicals must be present for the entire 6-d culture period to produce maximum stimulation of DNA synthesis in human lymphocytes. The longer exposure of the lymphocytes to arsenicals, the lower the concentrations of arsenicals at which the maximum stimulating effect on DNA synthesis was found. Stimulating effect of trivalent arsenic (sodium arsenite) on DNA synthesis was stronger than pentavalent arsenic (sodium arsenate), and the stronger the effect of trivalent arsenic than pentavalent, the longer exposure of the cells to the chemicals. Both sodium arsenite and sodium arsenate stimulated DNA synthesis in human lymphocytes to a lower degree than phytohemagglutinin (PHA).
Collapse
Affiliation(s)
- Z Meng
- Department of Environmental Science, Shanxi University, Taiyuan, P.R. China
| | | |
Collapse
|
20
|
Meng N, Nakashima N, Nagasaka T, Fukatsu T, Nara Y, Yoshida K, Kawaguchi T, Takeuchi J. Immunohistochemical characterization of extracellular matrix components of granulosa cell tumor of ovary. Pathol Int 1994; 44:205-12. [PMID: 8025663 DOI: 10.1111/j.1440-1827.1994.tb02594.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
In order to clarify the characteristics of granulosa cell tumors of the ovary, extracellular matrix components were investigated by immunohistochemical techniques. Twenty-three granulosa cell tumors (GCT; eight juvenile and 15 adult type) were studied in comparison with non-neoplastic granulosa cells of human ovaries. In all 23 cases of GCT, chondroitin 6-sulfate proteoglycan revealed with antibody 3B3 was characteristically observed in the extracellular matrix in the solid nest, as well as in microfollicles. In the juvenile cases, the extracellular matrix also contained large proteoglycan (PG) revealed with antibody 2B1. Macrofollicles as well as microfollicles contained PG chondroitin 6-sulfate side chains with a significant amount of chondroitin 4-sulfate. By biochemical analysis using high pressure liquid chromatography, it was also found that disaccharide composition of glycosaminoglycan fractions extracted from granulosa cell tumor tissues consisted mainly of 2-acetamide-2-deoxyl-3-O-(beta-D-gluco-4-enepyranosyluronic acid)-6-O-sulfo-D-galactose (delta Di-6S). The characteristic feature of granulosa cell tumors is the accumulation of chondroitin sulfate PG, especially chondroitin 6-sulfate PG, which may be synthesized by the tumor cells themselves. Immunohistochemical characterization of the extracellular matrix components (collagen, laminin, heparan sulfate PG, chondroitin 4-sulfate PG) was also studied in relation to chondroitin 6-sulfate PG localization.
Collapse
Affiliation(s)
- N Meng
- Department of Laboratory Medicine, Nagoya University, School of Medicine, Japan
| | | | | | | | | | | | | | | |
Collapse
|
21
|
Nara Y, Takeuchi J, Yoshida K, Fukatsu T, Nagasaka T, Kawaguchi T, Meng N, Kikuchi H, Nakashima N. Immunohistochemical characterisation of extracellular matrix components of salivary gland tumours. Br J Cancer 1991; 64:307-14. [PMID: 1909886 PMCID: PMC1977529 DOI: 10.1038/bjc.1991.297] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Proteoglycans (PGs) were localised immunohistochemically in 52 salivary gland tumours including pleomorphic adenoma, adenoid cystic carcinoma, acinic cell carcinoma, oncocytoma, mucoepidermoid carcinoma, clear cell tumour and Warthin tumour, using antibodies raised against large PG, small PG, chondroitin 4-sulphate PG, chondroitin 6-sulphate PG, heparan sulphate PG and keratan sulphate PG. Large PGs were mainly observed in mucinous materials of extracellular matrix (ECM) and interstitial fibrous element of tumour tissues, while small PGs were located only in hyaline matrix and surrounding fibrous (capsular) connective tissues. Chondroitin 6-sulphate PG was detected in the ECM of pleomorphic adenomas and clear cell carcinomas and in pseudocystic spaces of adenoid cystic carcinomas, but only in vessel walls in non-neoplastic tissues. Keratan sulphate PG was observed to locate in mucinous material of pleomorphic adenomas, acinic cell carcinomas and clear cell carcinomas, but not in the adenoid cystic carcinomas examined, and it was also unobservable in non-neoplastic salivary gland tissues. Heparan sulphate PG was observed on the inner surfaces of true ductal spaces of adenoid cystic carcinomas and on cell surfaces of oncocytoma cells. By HPLC analysis, individual glycosaminoglycans contained in tumour tissues were compared. Chondroitin 6-sulphate PG was very rich in ECM of pleomorphic adenomas and adenoid cystic carcinomas. Pleomorphic adenomas contained relatively more low-sulphated chondroitin sulphate than adenoid cystic carcinomas and other tumours.
Collapse
Affiliation(s)
- Y Nara
- Department of Laboratory Medicine, Nagoya University School of Medicine, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|