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Liu K, Zhu YF, Yang YS, Chen LQ, Hu JK. [Interpretation of Chinese expert consensus on the surgical treatment for adenocarcinoma of esophagogastric junction(2024 edition)]. Zhonghua Wei Chang Wai Ke Za Zhi 2024; 27:127-131. [PMID: 38413077 DOI: 10.3760/cma.j.cn441530-20231212-00214] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Due to the unique nature of its anatomical location, the adenocarcinoma of esophagogastric junction (AEG) has been a subject of controversy and disagreement including its definition, staging, and treatment strategies. Chinse expert Consensus on Surgical Treatment of Adenocarcinoma of Esophagogastric Junction in China (2018 Edition) had been released in September 2018 and had played a pioneering role in unifying thoracic and general surgeons in China on surgical treatment strategies for AEG. Over the past five years, the emergence of several clinical research results on AEG has provided new clinical evidence for the selection of key surgical treatment strategies. Therefore, to further standardize the surgical treatment of AEG in China, Chinese Expert Consensus on Surgical Treatment of Adenocarcinoma of Esophagogastric Junction in China (2024 Edition) was released in 2024 by Chinese expert panel including 25 gastrointestinal surgeons and 24 thoracic surgeons. Based on the highest-level clinical research evidence in recent 5 years, this consensus ultimately formulates 29 recommendations on hotspots and key points on surgical treatment of AEG and summary 5 issues that are still awaiting further exploration. This review will provide a summary and detailed interpretation of the recommendations outlined in this consensus.
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Affiliation(s)
- K Liu
- Department of General Surgery and Gastric Cancer Center & Laboratory of Gastric Cancer, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y F Zhu
- West China Clinical Medical College of Sichuan University, Chengdu 610041, China
| | - Y S Yang
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China;Liu Kai and Zhu Yunfeng contributed equally to this aricle
| | - L Q Chen
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China;Liu Kai and Zhu Yunfeng contributed equally to this aricle
| | - J K Hu
- Department of General Surgery and Gastric Cancer Center & Laboratory of Gastric Cancer, West China Hospital, Sichuan University, Chengdu 610041, China
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Zhang QY, Zhang LX, Han DH, Jiao XC, Zheng Z, Guo K, Yang YS. [Expression of endosialin in human hypertrophic scars and its regulation on fibroblast phenotype]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:1168-1174. [PMID: 38129304 DOI: 10.3760/cma.j.cn501225-20231030-00154] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Objective: To explore the expression of endosialin, i.e., CD248 in human hypertrophic scars (HSs) and its regulatory effect on the phenotype of hypertrophic scar fibroblasts (HSFs). Methods: The method of experimental research was used. From March to May, 2023, 3 pediatric patients with HS were admitted to the Department of Burns and Cutaneous Surgery of the First Affiliated Hospital of Air Force Medical University, including 2 females and 1 male, aged one year ten months to two years. The HS tissue resected during the surgery and the remaining full-thickness skin graft, i.e., normal skin tissue after full-thickness skin grafting were collected from the aforementioned pediatric patients for subsequent experiments. Using the aforementioned two types of tissue, the histological structures were observed by hematoxylin-eosin staining, collagen distribution was observed by Masson staining, and the expression of CD248 was observed and measured by immunohistochemical staining. The primary HSFs were isolated from HS tissue using explant culture technique, and the 3rd to 5th passages of HSFs were used in subsequent experiments. According to the random number table, HSFs were divided into immunoglobulin G78 (IgG78)-treated group and IgG control group, which were treated with 200 nmol/L human CD248 monoclonal antibody IgG78 and human IgG control antibody for 24 h, respectively. The mRNA expressions of collagen type Ⅰ (Col Ⅰ) and α-smooth muscle actin (α-SMA) in HSFs were measured by real-time fluorescence quantitative reverse transcription polymerase chain reaction, the protein expressions of Col Ⅰ and α-SMA in HSFs were detected by Western blotting, and the intracellular location and protein expressions of Col Ⅰ and α-SMA were detected by immunofluorescence method. The number of samples in each experiment was 3. Data were statistically analyzed with paired sample t test and independent sample t test. Results: Compared with those in normal skin tissue, the epidermis and dermis in HS tissue were significantly thicker, with massive accumulation and disordered arrangement of collagen in the dermis. The expression of CD248 in HS tissue was significantly upregulated compared with that in normal skin tissue (t=5.29, P<0.05). At post treatment hour 24, the mRNA expressions of Col Ⅰ and α-SMA of HSFs in IgG78-treated group were 0.39±0.05 and 0.56±0.09, respectively, which were significantly lower than 1.00±0.07 and 1.00±0.08 in IgG control group, respectively (with t values of 11.87 and 6.49, respectively, P values all <0.05). The protein expressions of Col Ⅰ and α-SMA of HSFs in IgG78-treated group were 0.617±0.011 and 0.67±0.14, respectively, which were significantly lower than 1.259±0.052 and 1.23±0.16 in IgG control group, respectively (with t values of 20.92 and 4.52, respectively, P values all <0.05). At post treatment hour 24, immunofluorescence staining showed that Col Ⅰ and α-SMA mainly located in the cytoplasm of HSFs in the two groups, and the protein expressions of Col Ⅰ and α-SMA of HSFs in IgG78-treated group were obviously downregulated compared with those in IgG control group. Conclusions: The expression of CD248 is significantly upregulated in human HS. Targeted blockade of CD248 can significantly inhibit the collagen synthesis by HSFs and the transdifferentiation of HSFs into myofibroblasts.
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Affiliation(s)
- Q Y Zhang
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China The Third Student Battalion, School of Basic Medical Sciences of Air Force Medical University, Xi'an 710032, China
| | - L X Zhang
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China
| | - D H Han
- Department of Urology, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China
| | - X C Jiao
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China
| | - Z Zheng
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China
| | - K Guo
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China
| | - Y S Yang
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China
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Shi F, Yang XJ, Xiong M, Yang YS, Zhang YS, Jin YL. [Identification the key factor of pulmonary fibrosis following silica nanoparticles exposure based on bioinformatics analysis]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:497-503. [PMID: 37524672 DOI: 10.3760/cma.j.cn121094-20211229-00639] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Objective: To investigate the main mechanisms of pulmonary fibrosis following silica nanoparticles (SiNPs) exposure through constructing the macrophage-fibroblast model in vitro, which simulated the process of pulmonary fibrosis. Methods: In January 2021, human mononuclear leukemia cells (THP-1) were treated with 0, 25, 50, 100 μg/ml SiNPs for 24 h. The supernatant of THP-1 cells was collected and applied to human embryonic lung fibroblast cells (MRC-5) which divided into control and low, medium and high dose groups at the logarithmic growth stage for 24 h. MRC-5 cell viability was detected by CCK8. The hydroxyproline (Hyp), interleukin 6 (IL-6), interleukin 1 beta (IL-1β) and tumor necrosis factor-alpha (TNF-α) expression were detected in the supernatants of MRC-5. The changed proteins were detected by liquid-phase mass spectrometry in high dose group. GeneCard database were applied to identity the differential pulmonary fibrosis proteins in high dose group. Gene Ontology (GO) was performed to identity the key biological process in differential pulmonary fibrosis proteins of high dose group. The String database was used to construct the protein-protein interactions (PPI) network of differential pulmonary fibrosis proteins. The APP of CytoHubba was applied to calculate the key protein of differential pulmonary fibrosis proteins in PPI network. Correlation coefficients between key differential pulmonary fibrosis proteins were calculated using Pearson correlation analysis. Western blotting was applied to detect the expression of key proteins of differential pulmonary fibrosis proteins in different groups. Results: CCK8 results showed that MRC-5 cell viability was increasing in low, medium and high dose groups compared with control group (P<0.05). The expression levels of Hyp and IL-1β in different group were increased compared with control group, the expression levels of IL-6 and TNF-α were increased in high dose group compared with control group (P<0.05). GeneCard database identified 26 differential pulmonary fibrosis proteins, which were mainly involved in extracellular matrix hydrolysis, cell inflammatory response, tissue repair, cell proliferation, inflammation response by GO analysis. The APP of CytoHubba was calculated that matrix metalloproteinase 9 (MMP9) and tissue inhibitor metalloproteinase 1 (TIMP1) played an important role in PPI network. The results of correlation analysis showed that MMP9 was correlated with the expression of matrix metalloproteinase 1 (MMP1), matrix metalloproteinase 3 (MMP3), TIMP1 and epidermal growth factor receptor (EGFR) (r=0.97, 0.98, 0.94, 0.93, P<0.05). Western blotting results showed that TIMP1 protein expression was increased in low, medium and high dose groups, while MMP9 protein expression was increased only in high dose group (P<0.05) . Conclusion: Differential expression proteins related with pulmonary fibrosis in MRC-5 cells mainly regulate biological processes of extracellular matrix hydrolysis, tissue repair, and cellular inflammation response following SiNPs exposure. MMP9 and TIMP1 may be the key proteins, which affected the fibrosis process in vitro pulmonary fibrosis model.
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Affiliation(s)
- F Shi
- School of Public Health, North China University of Science and Technology, Tangshan 063210, China
| | - X J Yang
- School of Public Health, North China University of Science and Technology, Tangshan 063210, China
| | - M Xiong
- School of Public Health, North China University of Science and Technology, Tangshan 063210, China
| | - Y S Yang
- School of Public Health, North China University of Science and Technology, Tangshan 063210, China
| | - Y S Zhang
- School of Public Health, North China University of Science and Technology, Tangshan 063210, China College of Life Sciences, North China University of Science and Technology, Tangshan 063210, China
| | - Y L Jin
- School of Public Health, North China University of Science and Technology, Tangshan 063210, China
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Zhang XM, Min HC, Chen J, Zhi JL, Dong HX, Kong JY, Meng JY, Sun G, Wang ZK, Pan F, Peng LH, Yang YS. [Efficacy of high-dose dual therapy for Helicobacter pylori infection eradication in servicemen: a randomized controlled trial]. Zhonghua Nei Ke Za Zhi 2023; 62:520-525. [PMID: 37096278 DOI: 10.3760/cma.j.cn112138-20220524-00401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
Objective: To assess the efficacy and cost-effectiveness of high-dose dual therapy compared with bismuth-containing quadruple therapy for treating Helicobacter pylori(H.pylori) infection in servicemen patients. Methods: A total of 160 H. pylori-infected, treatment-naive servicemen, including 74 men and 86 women, aged from 20 years to 74 years, with a mean (SD) age of 43 (13) years, tested in the First Center of Chinese PLA General Hospital from March 2022 to May 2022 were enrolled in this open-label, randomized controlled clinical trial. Patients were randomly allocated into 2 groups: the 14-day high-dose dual therapy group and the bismuth-containing quadruple therapy group. Eradication rates, adverse events, patient compliance, and drug costs were compared between the two groups. The t-test was used for continuous variables, and the Chi-square test for categorical variables. Results: No significant difference in H. pylori eradication rates were found between high-dose dual therapy and bismuth-containing quadruple therapy by ITT, mITT and PP analysis[ITT:90.0% (95%CI 81.2%-95.6%) vs. 87.5% (95%CI 78.2%-93.8%), χ2=0.25, P=0.617;mITT:93.5% (95%CI 85.5%-97.9%) vs. 93.3% (95%CI 85.1%-97.8%), χ2<0.01, P=1.000; PP: 93.5% (95%CI 85.5%-97.9%) vs. 94.5% (95%CI 86.6%-98.5%), χ2<0.01, P=1.000 ]. The dual therapy group exhibited significantly less overall side effects compared with the quadruple therapy group [21.8% (17/78) vs. 38.5% (30/78), χ2=5.15,P=0.023]. There were no significant differences in the compliance rates between the two groups [98.7%(77/78) vs. 94.9%(74/78), χ2=0.83,P=0.363]. The cost of medications in the dual therapy was 32.0% lower compared with that in the quadruple therapy (472.10 RMB vs. 693.94 RMB). Conclusions: The dual regimen has a favorable effect on the eradication of H. pylori infection in servicemen patients. Based on the ITT analysis, the eradication rate of the dual regimen is grade B (90%, good). Additionally, it exhibited a lower incidence of adverse events, better compliance and significantly reduced cost. The dual regimen is expected to be a new choice for the first-line treatment of H. pylori infection in servicemen but needs further evaluation.
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Affiliation(s)
- X M Zhang
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - H C Min
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China Medical School of Chinese PLA, Beijing 100853, China
| | - J Chen
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China Medical School of Chinese PLA, Beijing 100853, China
| | - J L Zhi
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - H X Dong
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - J Y Kong
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - J Y Meng
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - G Sun
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Z K Wang
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - F Pan
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - L H Peng
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Y S Yang
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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Wu DQ, Yang YS, Zhang WF, Lv ZJ, Yang ZF, Li Y. [Intravenous infusion of methylene blue to visualize the ureter in laparoscopic colorectal surgery]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:1098-1103. [PMID: 36562233 DOI: 10.3760/cma.j.cn441530-20220526-00229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Objective: Intraoperative localization of the ureter can contribute to accurate dissection and minimize ureteral injury in colorectal surgery. We aim to summarize a single center's experience of fluorescence ureteral visualization using methylene blue (MB) and explore its visualization efficiency. Methods: This is a descriptive case-series-study. Clinical data of patients who had undergone laparoscopic colorectal surgery and fluorescence visualization of the ureter in the Gastrointestinal Surgery Department of Guangdong Provincial People's Hospital from March 2022 to May 2022 were retrospectively collected. Patients with incomplete surgery videos, renal insufficiency, or allergic reactions were excluded. MB was infused with 0.9% NaCl at 1.0 mg/kg in 100 mL of normal saline for 5 to 15 minutes during laparoscopic exploration. Imaging was performed using a device developed in-house by OptoMedic (Guangdong, China) that operates at 660nm to achieve excitation of MB. Clinical information, MB dosage, rate of successful fluorescence, time to fluorescence, operation time, blood loss, intraoperative blood oxygen levels, pathological staging, changes in renal function, and post-operative complications were retrospectively analyzed. Results: The study cohort comprised 27 patients (24 men and 3 women) with an average age of (60.25±16.95) years and an average body mass index of (21.72±3.42) kg/m2. The dosage of MB was 0.3-1.0 mg/kg and the infusion time was 5-15 minutes. Fluorescence signals were detected in all patients. The median time to signal detection was 20 (range, 10 to 40) minutes after MB infusion. The range of intraoperative blood oxygen fluctuation averaged 2.5% (range, 0 to 7.0%). The median change in creatine concentration was -1.3 (range, -17.2 to 29.2) µmol/L. No patients had complications associated with use of MB. Fluorescence visualization of the ureter was very valuable clinically in two patients (thick mesentery, stage T4). Conclusion: MB is a safe and effective means of visualizing the ureter by fluorescence during laparoscopic colorectal surgery, especially when the procedure is difficult. MB in a dosage of less than 1 mg/kg can slowly infused for more than 5 minutes during laparoscopic exploration. During the infusion, attention must be paid to blood oxygen fluctuations.
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Affiliation(s)
- D Q Wu
- Department of Gastrointestinal Surgery, Department of General Surgery, Guangdong Provincial Hospital, Guandong Academy of Medical Science, Guangzhou 510080, China The Second School of Clinical Medicine, Southern Medical University, Guangzhou 510515, China
| | - Y S Yang
- Department of Gastrointestinal Surgery, Department of General Surgery, Guangdong Provincial Hospital, Guandong Academy of Medical Science, Guangzhou 510080, China Shantou University Medical College, Shantou 515041, China
| | - W F Zhang
- Department of Gastrointestinal Surgery, Department of General Surgery, Guangdong Provincial Hospital, Guandong Academy of Medical Science, Guangzhou 510080, China Guangdong Medical University, Zhanjiang 524023, China
| | - Z J Lv
- Department of Gastrointestinal Surgery, Department of General Surgery, Guangdong Provincial Hospital, Guandong Academy of Medical Science, Guangzhou 510080, China
| | - Z F Yang
- Department of Gastrointestinal Surgery, Department of General Surgery, Guangdong Provincial Hospital, Guandong Academy of Medical Science, Guangzhou 510080, China
| | - Yong Li
- Department of Gastrointestinal Surgery, Department of General Surgery, Guangdong Provincial Hospital, Guandong Academy of Medical Science, Guangzhou 510080, China The Second School of Clinical Medicine, Southern Medical University, Guangzhou 510515, China
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Cao P, Wang YW, Guan H, Yang YS, Li SH, Chen Y, Zhu C, Wan Y, Ren LY, Yao M. [Effects of mechanical tension on the formation of hypertrophic scars in rabbit ears and transforming growth factor-β 1/Smad signaling pathway]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:1162-1169. [PMID: 36594147 DOI: 10.3760/cma.j.cn501120-20211213-00412] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Objective: To explore the effects of mechanical tension on the formation of hypertrophic scars in rabbit ears and transforming growth factor-β1 (TGF-β1)/Smad signaling pathway. Methods: The experimental research method was adopted. Six New Zealand white rabbits, male or female, aged 3-5 months were used and 5 full-thickness skin defect wounds were made on the ventral surface of each rabbit ear. The appearance of all rabbit ear wounds was observed on post surgery day (PSD) 0 (immediately), 7, 14, 21, and 28. On PSD 28, the scar formation rate was calculated. Three mature scars in the left ear of each rabbit were included in tension group and the arch was continuously expanded with a spiral expander. Three mature scars in the right ear of each rabbit were included in sham tension group and only the spiral expander was sutured without expansion. There were 18 scars in each group. After mechanical tension treatment (hereinafter referred to as treatment) for 40 days, the color and texture of scar tissue in the two groups were observed. On treatment day 40, the scar elevation index (SEI) was observed and calculated; the histology was observed after hematoxylin eosin staining, and the collagen morphology was observed after Masson staining; mRNA expressions of TGF-β1, Smad3, collagen Ⅰ, collagen Ⅲ, and α-smooth muscle actin (α-SMA) in scar tissue were detected by real-time fluorescence quantitative reverse transcription polymerase chain reaction; and the protein expressions of TGF-β1, collagen Ⅰ, collagen Ⅲ, and α-SMA, and phosphorylation level of Smad3 in scar tissue were detected by Western blotting. The number of samples of each group in the experiments was 3. Data were statistically analyzed with independent sample t test. Results: On PSD 0, 5 fresh wounds were formed on all the rabbit ears; on PSD 7, the wounds were scabbed; on PSD 14, most of the wounds were epithelialized; on PSD 21, all the wounds were epithelialized; on PSD 28, obvious hypertrophic scars were formed. The scar formation rate was 75% (45/60) on PSD 28. On treatment day 40, the scar tissue of rabbit ears in tension group was more prominent than that in sham tension group, the scar tissue was harder and the color was more ruddy; the SEI of the scar tissue of rabbit ears in tension group (2.02±0.08) was significantly higher than 1.70±0.08 in sham tension group (t=5.07, P<0.01). On treatment day 40, compared with those in sham tension group, the stratum corneum of scar tissue became thicker, and a large number of new capillaries, inflammatory cells, and fibroblasts were observed in the dermis, and collagen was more disordered, with nodular or swirling distribution in the scar tissue of rabbit ears in tension group. On treatment day 40, the mRNA expressions of TGF-β1, Smad3, collagen Ⅰ, collagen Ⅲ, and α-SMA in the scar tissue of rabbit ears in tension group were respectively 1.81±0.25, 5.71±0.82, 7.86±0.56, 4.35±0.28, and 5.89±0.47, which were significantly higher than 1.00±0.08, 1.00±0.12, 1.00±0.13, 1.00±0.14, and 1.00±0.14 in sham tension group (with t values of 5.36, 9.82, 20.60, 18.26, and 17.13, respectively, all P<0.01); the protein expressions of TGF-β1, collagen Ⅰ, collagen Ⅲ, and α-SMA, and phosphorylation level of Smad3 in the scar tissue of rabbit ears in tension group were respectively 0.865±0.050, 0.895±0.042, 0.972±0.027, 1.012±0.057, and 0.968±0.087, which were significantly higher than 0.657±0.050, 0.271±0.029, 0.631±0.027, 0.418±0.023, and 0.511±0.035 in sham tension group (with t values of 5.08, 21.27, 15.55, 16.70, and 8.40, respectively, all P<0.01). Conclusions: Mechanical tension can inhibit the regression of hypertrophic scars in rabbit ears through stimulating the hyperplasia of scars, inhibiting the normal arrangement of dermal collagen fibers, and intensifying the deposition of collagen fibers, and the mechanism may be related to the activation of TGF-β1/Smad signaling pathway by mechanical tension.
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Affiliation(s)
- P Cao
- Department of Burns and Plastic Surgery, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| | - Y W Wang
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China
| | - H Guan
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China
| | - Y S Yang
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China
| | - S H Li
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China
| | - Y Chen
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China
| | - C Zhu
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital of Air Force Medical University, Xi'an 710032, China
| | - Y Wan
- Department of Burns and Plastic Surgery, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| | - L Y Ren
- Department of Burns and Plastic Surgery, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| | - M Yao
- Department of Burns and Plastic Surgery, General Hospital of Ningxia Medical University, Yinchuan 750004, China
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Li J, Hughes AE, Yang YS, Laleh M, Wang H, Zhang X, Ma J, Xu W, Tan MY. Quantitative 3D Characterization for Kinetics of Corrosion Initiation and Propagation in Additively Manufactured Austenitic Stainless Steel. Adv Sci (Weinh) 2022; 9:e2201162. [PMID: 36285796 PMCID: PMC9799015 DOI: 10.1002/advs.202201162] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 09/13/2022] [Indexed: 06/16/2023]
Abstract
In situ X-ray computed tomography (X-ray CT) is used to investigate the effects of characteristic microstructural features on the pitting initiation and propagation in austenitic stainless steel specimens prepared with laser powder bed fusion (LPBF) additive manufacturing. In situ X-ray CT in probing the mechanism and kinetics of localized corrosion is demonstrated by immersing two LPBF specimens with different porosities in an aggressive ferric chloride solution for the evaluation of corrosion. X-ray CT images are acquired from the specimens after every 8 hours of immersion over an extended period of time (216 hours). Corrosion pit growth is then quantitatively analyzed with a data-constrained modeling method. The pitting growth mechanism of LPBF stainless steel is found to be different from that of conventional stainless steels. More specifically, the mechanism of corrosion pit initiation is closely correlated with the original lack of fusion porosity (LOF) distribution on the surface of the specimens and preferential pit propagation through the LOF pores inside the specimens. Pit growth kinetics are derived from pit volume changes determined through 3D data analysis. The pit growth kinetics in LPBF specimens are found to vary in the initial pit formation, competitive pit propagation, and the dominant pit growth stages.
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Affiliation(s)
- Jianli Li
- Institute of Theoretical PhysicsSchool of Physics and Electronic Engineering and Collaborative Innovation Center of Extreme OpticsShanxi UniversityTaiyuanShanxi030006China
| | - Anthony E. Hughes
- Institute for Frontier MaterialsDeakin UniversityWaurn PondsVIC3216Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)Private Bag 10Clayton SouthVIC3169Australia
| | - Y. S. Yang
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)Private Bag 10Clayton SouthVIC3169Australia
| | - Majid Laleh
- Institute for Frontier MaterialsDeakin UniversityWaurn PondsVIC3216Australia
- School of EngineeringDeakin UniversityWaurn PondsVIC3216Australia
| | - Haipeng Wang
- Institute of Theoretical PhysicsSchool of Physics and Electronic Engineering and Collaborative Innovation Center of Extreme OpticsShanxi UniversityTaiyuanShanxi030006China
| | - Xufang Zhang
- Institute of Theoretical PhysicsSchool of Physics and Electronic Engineering and Collaborative Innovation Center of Extreme OpticsShanxi UniversityTaiyuanShanxi030006China
| | - Jie Ma
- State Key Laboratory of Quantum Optics and Quantum Optics DevicesInstitute of Laser Spectroscopy and Collaborative Innovation Center of Extreme OpticsShanxi UniversityTaiyuanShanxi030006China
| | - Wei Xu
- School of EngineeringDeakin UniversityWaurn PondsVIC3216Australia
| | - Mike Y. Tan
- Institute for Frontier MaterialsDeakin UniversityWaurn PondsVIC3216Australia
- School of EngineeringDeakin UniversityWaurn PondsVIC3216Australia
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Yang J, Yan JS, Yang YS, Zhang X. [The application of clinical decision support system in gastrointestinal diseases]. Zhonghua Nei Ke Za Zhi 2022; 61:1263-1268. [PMID: 36323571 DOI: 10.3760/cma.j.cn112138-20211130-00851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Affiliation(s)
- J Yang
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - J S Yan
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China School of Medicine, NanKai University, Tianjin 300071, China
| | - Y S Yang
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Xiaomei Zhang
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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Lee HK, Yang YS, Kim SK, Vongxay V, Lee YM. Early adolescents’ sexual and reproductive health literacy in Lao PDR. Eur J Public Health 2022. [DOI: 10.1093/eurpub/ckac130.039] [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
Background
Sexual and reproductive health literacy (SRHL) refers to the ability to access, understand, appraise, and apply information for decision-making related to sexual and reproductive health. The low level of SRHL in adolescents increases their sexually risky behaviors and endangers sexual health. Although early adolescence is a critical development period for forming initial views on sexuality and is often a time for attempting risky behaviors, studies on SRHL for early adolescents are fairly limited in Las PDR. As an initial step for the development of a global health project between Lao PDR and South Korea, this study assessed the level of SRHL and the differences in gender among early adolescents in Lao PDR.
Methods
Participants were 235 students conveniently recruited from one junior high school each in two provinces in Lao PDR. SRHL was measured using the 39-item Teen Pregnancy Health Literacy scale consisting of 4 subscales of finding, understanding, appraisal, and application. The scores were classified into inadequate, problematic, sufficient, and excellent using the SRHL index formula. The mean differences in gender were compared using t-test.
Results
The mean of the SRHL scores of the participants was 19.07 (±10.57). The mean score was significantly lower for girls, at 17.67 (±11.22) than for boys, at 21.37 (±9.05) (p = .006). Significant differences were further identified in all four sub-domains of SRHL: finding (p = .025), understanding (p = .005), appraisal (p = .041), and application (p = .029). The majority of participants (91.7%) were categorized as having an ‘inadequate’ or ‘problematic’ level of SRHL.
Conclusions
The level of SRHL among most early adolescents was found to be inadequate. The level of SRHL among girls was much lower than that among boys. The findings suggest a gender-specific approach to developing health education programs to improve SRHL among early adolescents and prevent future sexually risky behaviors in Lao PDR.
Key messages
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Affiliation(s)
- HK Lee
- Nursing, Yonsei University, Seoul , South Korea
| | - YS Yang
- Regional Office, Korea International Cooperation Agency , Vientiane, Laos
| | - SK Kim
- Nursing, Soonchunhyang, Cheonan , South Korea
| | - V Vongxay
- Public Health, University of Health Sciences , Vientiane, Laos
| | - YM Lee
- Nursing, DePaul University , Chicago, USA
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10
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Yan JS, Yang YS. [Application of artificial intelligence in gastroenterology]. Zhonghua Nei Ke Za Zhi 2022; 61:131-133. [PMID: 35090247 DOI: 10.3760/cma.j.cn112138-20210921-00652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- J S Yan
- Department of Gastroenterology and Hepatology,the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Y S Yang
- Department of Gastroenterology and Hepatology,the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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11
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Ren HL, Yang YS, Sun JL. [Research progress of mast cell activation syndrome]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:1513-1517. [PMID: 34963253 DOI: 10.3760/cma.j.cn112150-20210728-00722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Mast cells are the main effector cells in allergic diseases. Allergic diseases are mostly a direct result of mast cell mediator release effects, while allergen activation is only one of many triggers for mast cell mediator secretion. Increased mast cell number, high mast cell reactivity, or both can lead to abnormal mast cell activation. Mast cell activated syndrome (MCAS) refers to a group or a"spectrum"of mediator-related, symptomatically similar diseases in which mast cells are stimulated by multiple factors. The symptoms and signs of mast cell disease overlap with allergic diseases, but the etiology is different, which requires clinical attention. This article summarizes the research progress on mast cell activation syndrome in recent years thus increase awareness of the differential diagnosis.
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Affiliation(s)
- H L Ren
- Department of Allergy, Beijing Electric Power Hospital of State Grid Company of China, Electric Power Teaching Hospital of Capital Medical University, Beijing 100073, China
| | - Y S Yang
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - J L Sun
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
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12
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Yang YS, Wen D, Zhao XF. Correction to: Transmembrane Protease TMPRSS4 Promotes the Formation and Development of Mismatch Repair Deficient Colon Cancer Liver Metastasis. Bull Exp Biol Med 2021; 172:112. [PMID: 34796428 DOI: 10.1007/s10517-021-05343-9] [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: 10/19/2022]
Affiliation(s)
| | | | - X F Zhao
- Department of General Surgery, Dalian University Affiliated Xinhua Hospital, Dalian, China.
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Wen D, Yang YS, Gao DZ, Wang Z, Jiang QW, Zhao XF. Oridonin Enhances the Anti-Metastasis Effect of Oxaliplatinliplatin on Colorectal Cancer Liver Metastasis. Bull Exp Biol Med 2021; 172:26-32. [PMID: 34792718 DOI: 10.1007/s10517-021-05324-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Indexed: 11/26/2022]
Abstract
The anti-metastasis effect of oridonin in combination with oxaliplatin on colorectal cancer liver metastasis was studied using a BALB/c nude mouse model. The liver condition, bloody ascites, cholestasis, and liver metastasis scores in the three groups receiving oxaliplatin combined with oridonin were significantly milder than in the control group and importantly the anti-migratory effect of oxaliplatin combined with oridonin was obviously the strongest (p<0.05). Oridonin possessed no hepatotoxicity; instead, it effectively alleviated liver injury caused by oxaliplatin. Oridonin alone or in combination with oxaliplatin significantly decreased serum levels of α-fetoprotein and carcinoembryonic antigen. Therefore, oridonin combined with oxaliplatin displays great potential to markedly increase the anti-metastasis effect of oxaliplatin in the treatment of liver metastases of colorectal cancer.
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Affiliation(s)
- D Wen
- Department of General Surgery, Dalian University Affiliated Xinhua Hospital, Dalian, China
| | - Y S Yang
- Department of General Surgery, Dalian University Affiliated Xinhua Hospital, Dalian, China
| | - D Z Gao
- Department of General Surgery, Dalian University Affiliated Xinhua Hospital, Dalian, China
| | - Z Wang
- Department of General Surgery, Dalian University Affiliated Xinhua Hospital, Dalian, China
| | - Q W Jiang
- Department of General Surgery, Dalian University Affiliated Xinhua Hospital, Dalian, China
| | - X F Zhao
- Department of General Surgery, Dalian University Affiliated Xinhua Hospital, Dalian, China.
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Yang YS, Zhang JZ, Hwang DH, Lee JML, Nam CWN, Shin ESS, Doh JHD, Chen SLC, Kakuta TK, Koo BKK. Effect of coronary disease characteristics on prognostic relevance of residual ischemia after stent implantation. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1231] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Although residual ischemia after revascularization is an important predictor of future cardiovascular events, its sensitivity and specificity to predict clinical events were relatively low, and data on which coronary disease characteristics affect prognostic implications of residual ischemia are limited.
Purpose
We aimed to investigate the influence of coronary disease characteristics on prognostic implications of residual ischemia after percutaneous coronary intervention (PCI).
Methods
This study included 1,476 patients with drug-eluting stent implantation and available pre- and post-PCI fractional flow reserve (FFR) measurements from the international post-PCI FFR registry (NCT04012281). Residual ischemia was defined as post-PCI FFR ≤0.80. Coronary disease characteristics with significant interaction hazard ratios (HRs) for clinical outcomes with residual ischemia were defined as interaction characteristics with residual ischemia (ICwRI). The primary outcome was target vessel failure (TVF)–a composite of cardiac death, target vessel myocardial infarction, and target vessel revascularization–at 2 years.
Results
The mean pre- and post-PCI FFR were 0.68±0.11 and 0.87±0.07, respectively. The 203 vessels (13.8%) with residual ischemia had higher risks of TVF compared to that for post-PCI FFR >0.80 (HR 2.45, 95% confidence interval [CI] 1.50–4.00, P<0.001). Among pre- and post-PCI angiographic characteristics, ICwRI with a significant interaction HR with residual ischemia (P<0.10) included lesion length ≥40 mm, pre-PCI SYNTAX score >17, and pre-PCI FFR ≤0.62 (Table). Each ICwRI had a direct prognostic effect not mediated by residual ischemia in mediation analysis. The association between an increased TVF risk and residual ischemia differed according to the number of ICwRI (p-for-interaction <0.001). It was significant in patients with 0 or 1 ICwRI (HR 3.48, 95% CI 2.01–6.00, P<0.001) but not in those with ≥2 ICwRI (HR 0.60, 95% CI 0.18–2.03, P=0.41) (Figure A). Compared to the residual ischemia group, patients without residual ischemia and those with 0 or 1 ICwRI showed a significantly lower risk of TVF (HR 0.32, 95% CI 0.19–0.54, P<0.001), but those with ≥2 ICwRI had a similar risk of TVF as the residual ischemia group (HR 1.08, 95% CI 0.57–2.01, P=0.819) (Figure B). The prognostic impact of ≥2 ICwRI in patients without residual ischemia was consistent in all subgroups with different clinical characteristics.
Conclusions
Coronary disease characteristics including lesion length, SYNTAX score, and pre-PCI FFR affected the prognostic implications of residual ischemia. This prognostic relevance was attenuated in patients with multiple interacting characteristics. Therefore, comprehensive assessment of coronary disease characteristics with post-procedural coronary physiology can help better risk stratification and appropriate treatment planning after revascularization.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- Y S Yang
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - J Z Zhang
- The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - D H Hwang
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - J M L Lee
- Samsung Medical Center, Seoul, Korea (Republic of)
| | - C W N Nam
- Keimyung University Dongsan Medical Center, Daegu, Korea (Republic of)
| | - E S S Shin
- Ulsan Hospital, Ulsan, Korea (Republic of)
| | - J H D Doh
- Inje University Ilsan Paik hospital, Goyang, Korea (Republic of)
| | - S L C Chen
- Nanjing Medical University, Nanjing, China
| | - T K Kakuta
- Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| | - B K K Koo
- Seoul National University Hospital, Seoul, Korea (Republic of)
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15
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Yang YS, Chen LQ. [Patterns of recurrence after neoadjuvant chemoradiotherapy compared with surgery alone in esophageal cancer]. Zhonghua Wai Ke Za Zhi 2021; 59:651-654. [PMID: 34192856 DOI: 10.3760/cma.j.cn112139-20210228-00101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Associated with improvement in survival, the neoadjuvant therapy had become the mainstay of therapy for patients with locally advanced esophageal cancer. Despite a significantly better survival, the recurrence risk after neoadjuvant therapy remains considerably high, with recurrence rate of>40%. Thus, it's important to gain a thorough understanding of the recurrence patterns for developing effective tertiary prevention and follow-up strategies. The aim of this review was to compare the patterns of recurrence in patients with esophageal cancer who received preoperative therapy followed by surgery or surgery alone. It is found that the most frequent recurrence pattern was distant metastasis in esophageal cancer regardless receipt of neoadjuvant therapy or not, and the major effect of neoadjuvant therapy appears to be an improvement in local regional disease control without a reduction in systemic. This frustrating fact may explain the poor survival of esophageal cancer patients receiving neoadjuvant therapy.
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Affiliation(s)
- Y S Yang
- Department of Thoracic Surgery, West China Hospital of Sichuan University, Chengdu 610041, China
| | - L Q Chen
- Department of Thoracic Surgery, West China Hospital of Sichuan University, Chengdu 610041, China
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16
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Zhang XY, Yang YS, Shang QX, Gu YM, Shi GD, Zhang HL, Li XY, Chen LQ. [Correlation between preoperative inflammatory biomarkers and postoperative pneumonia or long-term prognosis in patients with esophageal cancer after neoadjuvant therapy]. Zhonghua Wai Ke Za Zhi 2021; 59:660-666. [PMID: 34192858 DOI: 10.3760/cma.j.cn112139-20210201-00060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective: To examine the correlation between neutrophil-lymphocyte ratio (NLR), lymphocyte-monocyte ratio (LMR) and neutrophil-monocyte ratio (NMR) for postoperative pneumonia or long-term overall survival in patients with esophageal cancer after neoadjuvant therapy. Methods: The clinical data of 137 patients, including 111 males and 26 females, with the age of (M(QR))61(10) years (range: 45 to 75 years), undergoing radical resection of esophageal cancer after neoadjuvant therapy admitted at Department of Thoracic Surgery, West China Hospital from January 2016 to May 2019 were analyzed retrospectively. The blood routine one or two days before surgery and the occurrence of pneumonia after surgery were collected via hospital information system. The absolute count of neutrophils, lymphocytes and monocytes was recorded, to calculate NLR, LMR and NMR. The survival of patients was recorded systematically via follow-up. In the first part, the influencing factors of postoperative inflammation were analyzed, to group the patients into two groups according to the occurrence of postoperative pneumonia. χ2 test, t-test or rank-sum test were conducted for inter-group comparison. In the second part, cutoff values of inflammatory biomarkers were obtained with the receiver operating characteristic (ROC) curve and grouped, with postoperative pneumonia as endpoint criteria. Independent factors correlated with postoperative pneumonia were determined through univariate and multivariate Logistic regression analysis. In the third part, the analysis on prognosis factors was carried on, with the survival as endpoint criteria. Cutoff values of inflammatory biomarkers were obtained with X-Tile software and grouped. The survival analysis was carried on with univariate and multivariate Cox proportional hazards regression model, and the Kaplan-Meier curve was drawn finally. The results of survival analysis were verified by Log-rank test. Results: Median follow-up time was 614 (299) days (range: 382 to 1 612 days). Cutoff values of NLR, LMR, and NMR obtained via the ROC curve were 3.0, 3.9, and 6.2, respectively. According to the multivariate Logistic regression analysis, NLR>3.0 (OR=2.740, 95% CI: 1.221 to 6.152, P=0.015) and LMR>3.9 (OR=0.140, 95% CI: 0.022 to 0.890, P=0.037) were independent prognosis factors for postoperative pneumonia in patients with esophageal cancer after neoadjuvant therapy. Cutoff values of NLR, LMR, and NMR obtained with X-Tile software were 3.3, 4.2, and 7.2, respectively. Through multivariate Cox proportional risk regression analysis, late tumor ypTNM staging (8th AJCC) (HR=2.087, 95% CI:1.079 to 4.038, P=0.029), poor pathologic response (HR=2.251, 95% CI: 1.117 to 4.538, P=0.023), and LMR>4.2 (HR=0.347, 95% CI: 0.127 to 0.946, P=0.039) could be independent prognosis factors for overall survival. Kaplan-Meier survival analysis indicated that the overall survival of patients with LMR ≤4.2 was worse (P=0.002), with the 1-year overall survival rate of 82.9%, and the 1-year overall survival rate of patients with LMR>4.2 was 94.6%. Conclusion: Preoperative LMR ≤3.9 and NLR>3.0 can be considered as independent prognosis factors for postoperative pneumonia, while LMR≤4.2 as one of independent prognosis factors for overall survival.
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Affiliation(s)
- X Y Zhang
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y S Yang
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Q X Shang
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y M Gu
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - G D Shi
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - H L Zhang
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - X Y Li
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - L Q Chen
- Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
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17
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Huang JJ, Bo L, Yang YS, Yang Y, Xu S. [Malignant peripheral nerve sheath tumor of the heart: report of a case]. Zhonghua Bing Li Xue Za Zhi 2021; 50:826-828. [PMID: 34405627 DOI: 10.3760/cma.j.cn112151-20201117-00846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- J J Huang
- Department of Pathology, Guizhou Medical University, Guiyang 550000, China
| | - L Bo
- Department of Pathology, the Affiliated Hospital of Guizhou Medical University, Guiyang 550000, China
| | - Y S Yang
- Department of Pathology, Guizhou Medical University, Guiyang 550000, China
| | - Y Yang
- Department of Pathology, Guizhou Medical University, Guiyang 550000, China
| | - S Xu
- Department of Pathology, Guizhou Medical University, Guiyang 550000, China
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Sheng JY, Liu S, Yang YS, Zhang XW. [The progress in management of esophagogastric variceal bleeding in cirrhotic portal hypertension]. Zhonghua Wai Ke Za Zhi 2020; 58:808-812. [PMID: 32993269 DOI: 10.3760/cma.j.cn112139-20191111-00556] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Esophagogastric variceal bleeding (EVB) is the most dangerous complication of cirrhotic portal hypertension.With the continuous emergence of research findings on EVB, multiple disciplinary team, including internal medicine department, surgery department, intervention therapy department, radiology department, has become a new mode for the prevention and treatment of EVB. This article first reviewed the classification of esophageal varices and gastric varices, and then reviewed the recent research findings of EVB from three aspects: primary prophylaxis, active variceal bleeding treatment, and secondary prophylaxis.The aim was to provide new ideas for the individualized prevention and treatment of EVB.
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Affiliation(s)
- J Y Sheng
- Department of Hepatobiliary and Pancreatic Surgery, the Second Hospital of Jilin University, Jilin Engineering Laboratory for Translational Medicine of Hepatobiliary and Pancreatic Diseases, Changchun 130041, China
| | - S Liu
- Department of Hepatobiliary and Pancreatic Surgery, the Second Hospital of Jilin University, Jilin Engineering Laboratory for Translational Medicine of Hepatobiliary and Pancreatic Diseases, Changchun 130041, China
| | - Y S Yang
- Department of Hepatobiliary and Pancreatic Surgery, the Second Hospital of Jilin University, Jilin Engineering Laboratory for Translational Medicine of Hepatobiliary and Pancreatic Diseases, Changchun 130041, China
| | - X W Zhang
- Department of Hepatobiliary and Pancreatic Surgery, the Second Hospital of Jilin University, Jilin Engineering Laboratory for Translational Medicine of Hepatobiliary and Pancreatic Diseases, Changchun 130041, China
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Wang XJ, Yang YS, Shen K, Wang J, Han F, Wu GF, Li Y, Bai XZ, Luo L, Hu DH. [Effects and mechanism of pyrroloquinoline quinine on mitochondrial function and cell survival of rat bone marrow mesenchymal stem cells under oxidative stress]. Zhonghua Shao Shang Za Zhi 2020; 36:378-387. [PMID: 32456375 DOI: 10.3760/cma.j.cn501120-20190806-00335] [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 observe the effects of pyrroloquinoline quinine (PQQ) on the mitochondrial function and cell survival of rat bone marrow mesenchymal stem cells (BMSCs) under oxidative stress, and to explore its mechanism. Methods: BMSCs of rats were cultured in vitro with Dulbecco's minimum essential medium/F12 medium containing fetal bovine serum in the volume fraction of 10% (hereinafter referred to as normal medium). The rat BMSCs of third to fifth passages in logarithmic growth phase were selected for the following experiments. (1) The cells were divided into normal control group, normal control+ PQQ group, hydrogen peroxide (H(2)O(2)) alone group, and H(2)O(2)+ PQQ group. The cells in normal control group were cultured in normal medium for 24 hours; the cells in normal control+ PQQ group were cultured in normal medium containing 100 μmol/L PQQ for 24 hours; the cells in H(2)O(2) alone group were cultured in normal medium containing 200 μmol/L H(2)O(2) for 24 hours; the cells in H(2)O(2)+ PQQ group were pre-incubated with normal medium containing 100 μmol/L PQQ for 2 hours, and then with H(2)O(2) added to the concentration of 200 μmol/L and cultured for 24 hours. The cell morphology of each group was observed under the inverted phase contrast microscope, and the cell survival rate was detected by cell count kit 8 method. (2) Five batches of cells were collected, and the cells of each batch were divided into normal control group, H(2)O(2) alone group, and H(2)O(2)+ PQQ group. The cells in each group received the same treatment as that in the corresponding group of experiment (1). After 24 hours of culture, one batch of cells was collected for apoptosis detection by flow cytometry, and the apoptosis rate was calculated. One batch of cells was subjected to mitochondrial membrane potential assay and JC-1 fluorescent staining observation using the JC-1 mitochondrial membrane potential detection kit and the inverted phase contrast fluorescence microscope, respectively. One batch of cells was collected for mitochondrial morphology observation under the transmission electron microscope. One batch of cells was subjected to catalase (CAT) and superoxide dismutase (SOD) activity assay by CAT activity assay kit and SOD activity assay kit, respectively. One batch of cells was subjected to Western blotting for determination of protein level of Epac1, adenine monophosphate activated protein kinase (AMPK), phosphorylated AMPK, cysteinyl aspartate-specific proteinase 3 (caspase-3), and cleaved caspase-3, and the phosphorylation level of AMPK and cleaved caspase-3/caspase-3 ratio were calculated. Six replicates were measured in each group for each index except for morphological observation. Data were statistically analyzed with one-way analysis of variance and independent sample equal variance t test. Results: (1) After 24 hours of culture, compared with those in normal control group (the cell survival rate was set to 100.0%), there was an increase in cell vacuole and a decrease in cell number in H(2)O(2) alone group, and the cell survival rate was significantly reduced to (74.3±2.9)% (t=6.39, P<0.01). Compared with those in H(2)O(2) alone group, the cell morphology of H(2)O(2)+ PQQ group was significantly improved, and the cell survival rate was significantly increased to (116.9±4.2)% (t=6.92, P<0.01); the cell survival rate in normal control+ PQQ group was (101.2±1.1)%, close to that of control group (t=1.06, P>0.05). (2) After 24 hours of culture, compared with (13.6±1.0)% in normal control group, the apoptosis rate of cells in H(2)O(2) alone group was significantly increased to (37.1±2.0)% (t=10.57, P<0.01). Compared with that in H(2)O(2) alone group, the apoptosis rate of cells in H(2)O(2)+ PQQ group was significantly declined to (17.0±0.7)% (t=9.49, P<0.01). (3) After 24 hours of culture, compared with those in normal control group, the mitochondrial membrane potential of cells in H(2)O(2) alone group was depolarized, the JC-1 fluorescent dye mainly existed in the cytoplasm in the form of monomer, which emitted green fluorescence, and a significant decrease in mitochondrial membrane potential was shown (t=4.18, P<0.01). Compared with those in H(2)O(2) alone group, the mitochondrial membrane potential of cells in H(2)O(2)+ PQQ group was increased to normal level (t=4.43, P<0.01), and the JC-1 fluorescent dye accumulated in mitochondria following the polarized mitochondrial membrane potential and emitted red fluorescence. (4) After 24 hours of culture, compared with that in normal control group, the mitochondrial structure of cells in H(2)O(2) alone group was disordered, with disappeared mitochondrial cristae and decreased mitochondrial matrix density. Compared with that in H(2)O(2) alone group, the mitochondrial structure of cells in H(2)O(2)+ PQQ group was regular and intact, with clearly visible mitochondrial cristae and increased mitochondrial matrix density. (5) After 24 hours of culture, compared with those in normal control group, the CAT activity of cells in H(2)O(2) alone group was significantly increased (t=4.54, P<0.05), and the SOD activity was significantly decreased (t=3.93, P<0.05). Compared with those in H(2)O(2) alone group, the CAT activity of cells in H(2)O(2)+ PQQ group was obviously increased (t=8.65, P<0.01), while there was no significant change in the SOD activity (t=0.72, P>0.05). (6) After 24 hours of culture, compared with those in normal control group, the protein expression of Epac1 of cells in H(2)O(2) alone group was significantly decreased (t=4.67, P<0.01), while the AMPK phosphorylation level and the cleaved caspase-3/caspase-3 ratio were significantly increased (t=7.88, 3.62, P<0.01). Compared with those in H(2)O(2) alone group, the protein expression of Epac1 and the AMPK phosphorylation level of cells in H(2)O(2)+ PQQ group were both significantly increased (t=4.34, 16.37, P<0.01), while the cleaved caspase-3/caspase-3 ratio was significantly declined (t=3.17, P<0.05). Conclusions: Pretreatment with PQQ can improve the mitochondrial function, reduce cell apoptosis rate, and enhance cell survival rate of rat BMSCs under oxidative stress, which may be related to the up-regulation of Epac1 protein expression, activation of AMPK signaling pathway, and down-regulation of cleaved caspase-3 protein level.
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Affiliation(s)
- X J Wang
- Burn Center of PLA, Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - Y S Yang
- Burn Center of PLA, Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - K Shen
- Burn Center of PLA, Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - J Wang
- Burn Center of PLA, Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - F Han
- Burn Center of PLA, Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - G F Wu
- Burn Center of PLA, Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - Y Li
- Burn Center of PLA, Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - X Z Bai
- Burn Center of PLA, Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - L Luo
- Burn Center of PLA, Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - D H Hu
- Burn Center of PLA, Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
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Hong J, Han L, Chen BD, Yao X, Yang YS. [The role of facial nerve motor evoked potentials in predicting facial nerve function in vestibular schwannoma surgery]. Zhonghua Yi Xue Za Zhi 2020; 100:1245-1248. [PMID: 32344497 DOI: 10.3760/cma.j.cn112137-20191104-02390] [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 analyze the role of facial nerve motor evoked potentials in predicting facial nerve function in vestibular schwannoma surgery. Methods: In a retrospective clinical study of 226 patients with acoustic neuroma, admitted to our hospital from January 2016 to May 2019, were investigated by facial nerve motor evoked potentials (FNMEP) elicited by multi-pulse transcranial electrical motor cortex stimulation from. For recording the same electrode set-up was used as for continuous EMG monitoring of the orbicularis oculi,oris muscles and mentalis. Pre-surgical (opening dural), intraoperative and post-surgical (closing dural) FNMEP amplitudes and latencies were recorded. End (closing dura) to start (opening dura) amplitude ratios were compared to early-term(3 day after surgery) facial nerve function by House-Brackmann(HB) Grading. Results: 201 patients(88.9%) get a total tumor resection, 15 patients (6.6%) were a subtotal resection, 10 patients(4.4%) were a partial resection. 100 percent of patients had a integrated anatomical preservation of facial nerves, there were four (1.8%) death cases in this group. Reliable FNMEPs were obtained in all patients. The ratio of end-operative to start-operative FNMEP-amplitude showed a negative correlation with early facial nerve function. Correlation was especially close with early function: an amplitude preservation rate of 85.3% led to HB Ⅰ or Ⅱ in 190(84.1%) patients, of 45.6% to HB Ⅲ in 17(7.5%) patients, of 23.1% to HB Ⅳ in 13(5.8%) patients and of 6.7% to HB Ⅴor Ⅵ in 6(2.7%) patients. There was a negative correlation between FNMEP amplitude ratio and post-surgical early HB grading(r=-0.895, P=0.000). Conclusion: FNMEP was highly reliable in predicting early postoperative facial function of the resection of vestibular schwannoma, was a valid protection technique of facial nerve.
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Affiliation(s)
- J Hong
- Department of Neurosurgery, Tianjin Huanhu Hospital, Tianjin 300350, China
| | - L Han
- Department of Electrophysiology, Tianjin Huanhu Hospital, Tianjin 300350, China
| | - B D Chen
- Department of Neurosurgery, Tianjin Huanhu Hospital, Tianjin 300350, China
| | - X Yao
- Department of Neurosurgery, Tianjin Huanhu Hospital, Tianjin 300350, China
| | - Y S Yang
- Department of Neurosurgery, Tianjin Huanhu Hospital, Tianjin 300350, China
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21
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Jia YH, Han F, Jia WB, Yang YS, Wang YC, Liu JQ, Ji P, Hu DH. [Effect of silent information regulator 1 on the LPS induced lncRNA expression of macrophages in mice]. Zhonghua Yi Xue Za Zhi 2020; 100:893-898. [PMID: 32234162 DOI: 10.3760/cma.j.cn112137-20191128-02583] [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 investigate the effect of Silent information regulator 1 (Sirt1) on the expression profile of long non-coding RNA (lncRNA) in macrophages upon lipopolysaccharide (LPS) treatment. Methods: Peritoneal macrophages (PM) were isolated from nine wild-type C57BL/6 male mice (wild-type group) and nine myeloid-specific Sirt1 knock-out mice (knock-out group). RNA samples were extracted from macrophages stimulated with 1 μg/ml LPS. Sequencing and the differentially expressed lncRNA were screened after the RNA was quantified. The threshold set for up-and down-regulated genes was a fold change (wild-type group/knock-out group) ≥2 and P≤0.05. Afterwards, gene ontology (GO) and pathway enrichment analysis were conducted and co-expression network map was constructed. Results: Four hundred and forty five lncRNA genes were differentially expressed (185 lncRNA genes were up-regulated and 260 lncRNA genes were down-regulated). Two hundred mRNA genes were differentially expressed (113 mRNA genes were up-regulated and 87 mRNA genes were down-regulated). It was found that the differentially expressed lncRNA genes and the predicted corresponding target genes were mainly distributed in the regions of biological processes of macrophage inflammatory response, macrophage chemotaxis and cell metabolism by GO and pathway enrichment analysis. Conclusion: lncRNA expression profile changes significantly in LPS induced macrophages isolated from Sirt1 knock out mice, which is closely related to the function of macrophages.
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Affiliation(s)
- Y H Jia
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital, Air Force Medical University of PLA, Xi'an 710032, China
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Adeel M, Yang YS, Wang YY, Song XM, Ahmad MA, Rogers HJ. Uptake and transformation of steroid estrogens as emerging contaminants influence plant development. Environ Pollut 2018; 243:1487-1497. [PMID: 30292158 DOI: 10.1016/j.envpol.2018.09.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 08/06/2018] [Accepted: 09/03/2018] [Indexed: 06/08/2023]
Abstract
Steroid estrogens are emerging contaminants of concern due to their devastating effects on reproduction and development in animals and humans at very low concentrations. The increasing steroid estrogen in the environment all over the world contrasts very few studies for potential impacts on plant development as a result of estrogen uptake. This study evaluated the uptake, transformation and effects of estradiol (17β-E2) and ethinyl estradiol (EE2) (0.1-1000 μg L-1) on lettuce. Uptake increased in leaves and roots in a dose-dependent manner, and roots were the major organ in which most of the estrogen was deposited. The transformation of estrogens to major metabolite and their further reverse biotransformation in lettuce tissue was identified. At low concentrations (0.1 and 50 μg L-1) estrogens resulted in enhanced photosynthetic pigments, root growth and shoot biomass. Application of higher concentrations of estrogens (10 mg L-1) significantly reduced total root growth and development. This was accompanied by increased levels of hydrogen peroxide (H2O2), and malondialdehyde (MDA), and activities of antioxidant enzymes superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and ascorbate peroxidase (APX). Taken together, these findings suggest that at low concentrations estrogens may biostimulate growth and primary metabolism of lettuce, while at elevated levels they have adverse effects.
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Affiliation(s)
- Muhammad Adeel
- Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education, Shenyang, 11044, PR China
| | - Y S Yang
- Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education, Shenyang, 11044, PR China; Key Lab of Groundwater Resources & Environment (Jilin University), Ministry of Education, Changchun, 130021, PR China.
| | - Y Y Wang
- Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education, Shenyang, 11044, PR China
| | - X M Song
- Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education, Shenyang, 11044, PR China
| | - M Arslan Ahmad
- Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education, Shenyang, 11044, PR China
| | - Hilary J Rogers
- School of Biosciences, Cardiff University, Main Building, Park Place, Cardiff, CF10 3TL, UK
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Zhang X, Yang YS, Lu Y, Wen YJ, Li PP, Zhang G. Bioaugmented soil aquifer treatment for P-nitrophenol removal in wastewater unique for cold regions. Water Res 2018; 144:616-627. [PMID: 30096688 DOI: 10.1016/j.watres.2018.08.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/30/2018] [Accepted: 08/03/2018] [Indexed: 06/08/2023]
Abstract
P-nitrophenol (PNP) is a toxic and recalcitrant organic pollutant and a usual intermediate in the production of fine chemicals, which has posed a significant threat to subsurface environment safety. Soil aquifer treatment (SAT) is a promising method to remove and remediate contamination in vadose zone with low cost and high efficiency. However, there are still research gaps for the treatment of recalcitrant contaminants by SAT in cold regions, such as un-robust indigenous microbes and low temperature constraint in vadose zone. The bioaugmentation technology was first introduced into SAT in order to enhance the removal ability of PNP by SAT operated in cold regions in this study. A high-efficiency PNP-degrading bacterium was successfully isolated, which can efficiently degrade PNP below 200 mg L-1 with a degradation rate above 99% at 15 °C close to the real subsurface temperature in cold regions, and added into SAT for bioaugmentation. The feasibility of bioaugmented SAT and associated PNP removal process were investigated by laboratory sand columns, along with effects of the SAT operative parameters (namely PNP loading concentration, flow rate and soil saturation level of SAT). Within the range of PNP loading stresses tested (1-200 mg L-1), PNP removal efficiency was optimal at constant flow rate of 219 mL d-1 in unsaturated operating condition of SAT under 15 °C among all the investigated experimental conditions. Longer hydraulic residence time increased the PNP removal rate, although the accumulated mass removed reduced and the removal efficiencies remained constant in unsaturated operating condition of SAT. It is found from the comparison between the PNP removals via both unsaturated and saturated columns that slight difference only in the removal rate of PNP was observed and the highly efficient bioaugmented SAT can completely degrade PNP of 10 mg L-1 within 5 wetting/drying cycles under both scenarios.
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Affiliation(s)
- Xi Zhang
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun, 130021, PR China
| | - Y S Yang
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun, 130021, PR China; Key Laboratory of Eco-restoration of Region Polluted Environment (Shenyang University), Ministry of Education, Shenyang, 110044, PR China
| | - Ying Lu
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun, 130021, PR China.
| | - Y J Wen
- Key Laboratory of Eco-restoration of Region Polluted Environment (Shenyang University), Ministry of Education, Shenyang, 110044, PR China
| | - P P Li
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun, 130021, PR China
| | - Ge Zhang
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun, 130021, PR China
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Yang YS, Li P, Zhang X, Li M, Lu Y, Xu B, Yu T. Lab-based investigation of enhanced BTEX attenuation driven by groundwater table fluctuation. Chemosphere 2017; 169:678-684. [PMID: 27912192 DOI: 10.1016/j.chemosphere.2016.11.128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 11/24/2016] [Accepted: 11/25/2016] [Indexed: 06/06/2023]
Abstract
Groundwater fluctuation is often overlooked and lack of study in the field contaminant hydrogeology. Hydraulic force from fluctuating groundwater tables leads to dissolution and subsequent enhanced advective transport of petroleum (e.g. BTEX) in contaminated subsurface system. A laboratory investigation of effect of the groundwater table fluctuation (GTF) on BTEX transport, taking toluene as a typical compound, in a typical representative model of aquifers subjected to a daily water-table fluctuation was undertaken in this work. Results showed that toluene in effluent degraded significantly with cycles of GTF, and the attenuation rates differed in porous media types with higher value for fine-coarse sand media (13.7 mg L-1 d-1) and lower for fine sand-clay media (2.8 mg L d-1). Hydraulic and hydrochemical evidences inferred that toluene attenuation was controlled mainly by flushing effect in the initial GTF cycle stages, followed by dissolution and mixing action in the later stages. Meanwhile, adsorption was found to take effects in toluene behavior throughout the whole GTF process, particularly obvious in fine sand-clay media with its toluene attenuation rate of only 2.8 mg L d-1.
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Affiliation(s)
- Y S Yang
- Key Lab of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun, 130021, PR China; Key Lab of Eco-restoration of Region Polluted Environment, Shenyang University, Ministry of Education, Shenyang, 110044, PR China
| | - Panpan Li
- Key Lab of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun, 130021, PR China
| | - Xi Zhang
- Key Lab of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun, 130021, PR China
| | - Mingjie Li
- Key Lab of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun, 130021, PR China
| | - Ying Lu
- Key Lab of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun, 130021, PR China.
| | - Bin Xu
- Key Lab of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun, 130021, PR China
| | - Tong Yu
- Key Lab of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun, 130021, PR China
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Fan B, Yin YS, Sun G, Zhu LY, Liu W, Pi XE, Fei DB, Peng LH, Wang X, Yang YS. [Effects of different carbohydrates on the simulation of human intestinal bacterial flora with in vitro culture]. Zhonghua Nei Ke Za Zhi 2017; 55:381-5. [PMID: 27143189 DOI: 10.3760/cma.j.issn.0578-1426.2016.05.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the optimal growth condition of human fecal bacterial flora in vitro by comparing the effect of different carbohydrates as cultural media. METHODS Three fecal samples (1, 2, 3) were collected and inoculated into a single-stage chemostat system, in which starch medium (VI) and starch polysaccharide medium(XP) were used. Samples were collected for bacterial genomic DNA extraction and polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) analysis. Bacterial composition and short chain fatty acid (SCFA) were then analyzed. RESULTS The single stage chemostat system reached steady after operating 8 days, when evaluated by the PCR-DGGE. Bacterial 16s rRNA high-throughput sequencing showed that the intestinal bacteria of these three volunteers was mainly composed of four bacterial phyla, namely, Bacteroidetes, Firmicutes, Proteobacteria and Actinobacteria. When the influence of bacterial abundance was considered, the similarity of bacterial composition between the original fecal samples to the harvested flora after culture was 0.847, 0.825, 0.968 in VI medium and 0.927, 0.926, 0.836 in XP medium, respectively. The similarity was decreased to 0.553, 0.580, 0.623 with VI medium and 0.617, 0.520, 0.574 with XP medium, when the number of bacterial species was considered. The variation of host individual also influenced the simulation. VI medium favored fecal sample 3, while XP medium more benefited sample 1 and 2. Bacteroides and Lachnospiraceae_incertae_sedis grew in both VI and XP medium. However, some species were only detected in VI medium and some were specifically found in the XP medium. The SCFA concentration in fermenters was 15-35 mmol/L, mainly propionate and butyrate. CONCLUSIONS The chemostat system works for stimulating human gut bacterial flora in vitro. The bacterial composition is affected by different carbohydrate in the culture medium yet with close simulation higher than 80%.
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Affiliation(s)
| | - Y S Yin
- Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | | | | | | | | | | | | | | | - Y S Yang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing 100853, China
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Yang YS, Marder SR, Green MF. Repurposing Drugs for Cognition in Schizophrenia. Clin Pharmacol Ther 2016; 101:191-193. [PMID: 27706797 DOI: 10.1002/cpt.529] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 09/09/2016] [Accepted: 09/19/2016] [Indexed: 11/10/2022]
Abstract
Currently approved treatments for schizophrenia only minimally affect the cognitive features of the illness that are the most closely related to disability. Hence, there is now considerable effort to repurpose drugs for schizophrenia, and to seek agents that can improve cognition by targeting receptor systems other than the dopaminergic system. The results of these studies have been mixed thus far; however, this continues to be a high-priority area of schizophrenia research and an important unmet need.
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Affiliation(s)
- Y S Yang
- VISN22 Mental Illness Research, Education and Clinical Center, VA Greater Los Angeles Healthcare System, Los Angeles, California, USA.,Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, Los Angeles, California, USA
| | - S R Marder
- VISN22 Mental Illness Research, Education and Clinical Center, VA Greater Los Angeles Healthcare System, Los Angeles, California, USA.,Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, Los Angeles, California, USA
| | - M F Green
- VISN22 Mental Illness Research, Education and Clinical Center, VA Greater Los Angeles Healthcare System, Los Angeles, California, USA.,Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, Los Angeles, California, USA
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Abstract
The asymptotic properties of the unique stationary measure of a Markov branching process will be given. In the critical case with finite variance, the result can be deduced from a result for discrete time processes of Kesten, Ney and Spitzer (1966) where the proof makes use of a stronger assumption than the finiteness of variance. For the continuous time case where the stationary measure has an explicit form, we can use the discrete renewal theorem which takes care of the infinite variance case as well.
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Abstract
Continuous time one-type branching processes allowing immigration are considered. The invariant measure, which is shown to be unique, is exhibited. From this, a condition for positive recurrence similar to that of Heathcote's in the discrete time case is obtained. For the critical discrete time case, Seneta's sufficient condition for positive recurrence is improved to give a necessary and sufficient condition.
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Pan JL, Yin Y, Wen YH, Bai SL, Cheng J, Cao GP, Yang YS. A silica-based gel electrolyte system for improving the cycle performance of LiFePO4 batteries in an aqueous medium. RSC Adv 2016. [DOI: 10.1039/c5ra21378a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cycling performance of LiFePO4 electrodes in aqueous and gel electrolytes at a 0.5C rate.
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Affiliation(s)
- J. L. Pan
- College of Science
- Beijing University of Chemical Technology
- Beijing
- China
- Research Institute of Chemical Defence
| | - Y. Yin
- College of Science
- Beijing University of Chemical Technology
- Beijing
- China
- Research Institute of Chemical Defence
| | - Y. H. Wen
- Research Institute of Chemical Defence
- Beijing
- China
| | - S. L. Bai
- College of Science
- Beijing University of Chemical Technology
- Beijing
- China
| | - J. Cheng
- Research Institute of Chemical Defence
- Beijing
- China
| | - G. P. Cao
- Research Institute of Chemical Defence
- Beijing
- China
| | - Y. S. Yang
- College of Science
- Beijing University of Chemical Technology
- Beijing
- China
- Research Institute of Chemical Defence
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Liu X, Lu Y, Yang YS, Hu HX, Zheng YG. Electrochemical behavior of phenylalanine and its cobalt complex as corrosion inhibitors for mild steel in H2SO4. RUSS J APPL CHEM+ 2015. [DOI: 10.1134/s1070427215020263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Hughes AE, Trinchi A, Chen FF, Yang YS, Cole IS, Sellaiyan S, Carr J, Lee PD, Thompson GE, Xiao TQ. Revelation of intertwining organic and inorganic fractal structures in polymer coatings. Adv Mater 2014; 26:4504-4508. [PMID: 24789506 DOI: 10.1002/adma.201400561] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 03/27/2014] [Indexed: 06/03/2023]
Abstract
X-ray microtomography and serial block face scanning electron microscopy are used to reveal independent clusters of inorganic particles embedded within a polymer. These clusters are interpenetrating, of varying size, and have fractal dimensions that strongly influence transport and structure-property relations. This interpretation forms a baseline for designing hybrid materials for applications in self-healing, drug delivery, and membranes.
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Affiliation(s)
- A E Hughes
- CSIRO Materials Science and Engineering, Private Bag 33, Clayton, 3169, Australia
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Gao Q, Peng J, Yang YS, Chen LQ. P-198 * THE EFFECTS OF PREOPERATIVE ANXIETY STATUS ON SHORT-TERM POSTOPERATIVE COMPLICATIONS IN PATIENTS WITH OESOPHAGEAL CARCINOMA. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu167.198] [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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Liu LL, He JH, Xie HB, Yang YS, Li JC, Zou Y. Resveratrol induces antioxidant and heat shock protein mRNA expression in response to heat stress in black-boned chickens. Poult Sci 2014; 93:54-62. [PMID: 24570423 DOI: 10.3382/ps.2013-03423] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
This study investigated the effects of dietary resveratrol at 0, 200, 400, or 600 mg/kg of diet on the performance, immune organ growth index, serum parameters, and expression levels of heat shock protein (Hsp) 27, Hsp70, and Hsp90 mRNA in the bursa of Fabricius, thymus, and spleen of 42-d-old female black-boned chickens exposed to heat stress at 37 ± 2°C for 15 d. The results showed that heat stress reduced daily feed intake and BW gain; decreased serum glutathione (GSH), growth hormone, and insulin-like growth factor-1 levels; and inhibited GSH peroxidase (GSH-Px), superoxide dismutase (SOD), and catalase (CAT) activities compared with birds subjected to thermo-neutral circumstances. Chickens that were fed diets supplemented with resveratrol exhibited a linear increase in feed intake and BW gain (P < 0.001); serum GSH, growth hormone, and insulin-like growth factor-1 levels (P ≤ 0.01); and GSH-Px, SOD, and CAT activities (P < 0.001) compared with chickens that were fed diets without resveratrol during heat stress. In contrast, serum malonaldehyde concentrations were decreased (P < 0.001) in the chickens fed a resveratrol-supplemented diet. Heat stress also reduced (P < 0.05) the growth index of the bursa of Fabricus and spleen; however, it had no effect on the growth index of the thymus. The growth index of the bursa of Fabricius and spleen increased (P < 0.05) upon heat stress and coincided with an increase in supplemental resveratrol levels. The expression of Hsp27, Hsp70, and Hsp90 mRNA in the bursa of Fabricius and spleen were increased (P < 0.01), but those of Hsp27 and Hsp90 mRNA in thymus were decreased (P < 0.01) under heat stress compared with no heat stress. Resveratrol attenuated the heat stress-induced overexpression of Hsp27, Hsp70, and Hsp90 mRNA in the bursa of Fabricius and spleen and increased the low expression of Hsp27 and Hsp90 mRNA in thymus upon heat stress. The results suggest that supplemental resveratrol improves growth performance and reduces oxidative stress in heat-stressed black-boned chickens by increasing serum growth hormone concentrations and modulating the expression of heat shock genes in organs of the immune system.
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Affiliation(s)
- L L Liu
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
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Wang ZK, Yang YS, Stefka AT, Sun G, Peng LH. Review article: fungal microbiota and digestive diseases. Aliment Pharmacol Ther 2014; 39:751-66. [PMID: 24612332 DOI: 10.1111/apt.12665] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 09/16/2013] [Accepted: 01/29/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND The role of the fungal microbiota in digestive diseases is poorly defined, but is becoming better understood due to advances in metagenomics. AIM To review the gastrointestinal fungal microbiota and its relationship with digestive diseases. METHODS Search of the literature using PubMed and MEDLINE databases. Subject headings including 'fungal-bacterial interactions', 'mycotoxins', 'immunity to fungi', 'fungal infection', 'fungal microbiota', 'mycobiome' and 'digestive diseases' were used. RESULTS The fungal microbiota is an integral part of the gastrointestinal microecosystem with up to 10(6) microorganisms per gram of faeces. Next-generation sequencing of the fungal 18S rRNA gene has allowed better characterisation of the gastrointestinal mycobiome. Numerous interactions between fungi and bacteria and the complex immune response to gastrointestinal commensal or pathogenic fungi all impact on the pathophysiology of inflammatory bowel disease and other gastrointestinal inflammatory entities such as peptic ulcers. Mycotoxins generated as fungal metabolites contribute to disturbances of gastrointestinal barrier and immune functions and are associated with chronic intestinal inflammatory conditions as well as hepatocellular and oesophagogastric cancer. Systemic and gastrointestinal disease can also lead to secondary fungal infections. Fungal genomic databases and methodologies need to be further developed and will allow a much better understanding of the diversity and function of the mycobiome in gastrointestinal inflammation, tumourigenesis, liver cirrhosis and transplantation, and its alteration as a consequence of antibiotic therapy and chemotherapy. CONCLUSIONS The fungal microbiota and its metabolites impact gastrointestinal function and contribute to the pathogenesis of digestive diseases. Further metagenomic analyses of the gastrointestinal mycobiome in health and disease is needed.
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Affiliation(s)
- Z K Wang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Chinese PLA Medical Academy, Beijing, China
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Abstract
Pyogenic hepatic abscess (PHA) is a rare but potentially serious disease. Investigations of new therapeutic methods urgently need experimental support in corresponding animal models. However, to date, few studies have evaluated PHA in the minipig. The linear regression equation of the Staphylococcus aureus ATCC 25923 strain was established. PHA was successfully mocked, and S. aureus ATCC 29213 was the only pathogenic bacterium identified. The abscess formation stage was observed on the 21st day of the operation. This study will provide a baseline for further studies evaluating new treatment methods for PHA.
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Affiliation(s)
- R G Zhang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, China
| | - X D Wang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, China
| | - X L Zhang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, China
| | - Y S Yang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, China
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Lee SH, Lee MW, Yoo KH, Kim DS, Son MH, Sung KW, Cheuh H, Choi SJ, Oh W, Yang YS, Koo HH. Co-transplantation of third-party umbilical cord blood-derived MSCs promotes engraftment in children undergoing unrelated umbilical cord blood transplantation. Bone Marrow Transplant 2013; 48:1040-5. [DOI: 10.1038/bmt.2013.7] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 01/05/2013] [Accepted: 01/10/2013] [Indexed: 12/11/2022]
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Fan W, Yang YS, Lu Y, Du XQ, Zhang GX. Hydrogeo-chemical impacts of air sparging remediation on a semi-confined aquifer: evidences from field monitoring and modeling. Chemosphere 2013; 90:1419-1426. [PMID: 23021385 DOI: 10.1016/j.chemosphere.2012.08.046] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 08/23/2012] [Accepted: 08/26/2012] [Indexed: 06/01/2023]
Abstract
Air sparging (AS) was explored for remediation of a petroleum contaminated semi-confined groundwater system in NE China. Physical, hydro-chemical and hydraulic behaviors in subsurface environment during AS were investigated with support of modeling to understand the hydrogeo-chemical impacts of AS on the aquifer. The responses of groundwater, dissolved oxygen and temperature indicated that the radius of influence of AS was up to 8-9 m, and a 3D boundary of the zone of influence (ZOI) was accordingly obtained with volume of 362 m(3). Water mounding unlike normal observations was featured by continuous up-lift and blocked dissipation. AS induced water displacement was calculated showing no obvious spreading of contaminant plume under this AS condition. Slug tests were employed before and after AS to reveal that the physical perturbation led to sharp increase in permeability and porosity. Modeling indicated that the regional groundwater flow field was not affected by AS except the physical perturbation in ZOI. Hydro-chemically increase of pH and Eh, and reduction of TDS, electrical conductivity and bicarbonate were observed in ZOI during AS. PHREEQC modeling inferred that these chemical phenomena were induced by the inorganic carbon transfer during air mixing.
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Affiliation(s)
- W Fan
- Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China
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Choi HW, Kim YH, Rim YH, Yang YS. Crystallization kinetics of lithium niobate glass: determination of the Johnson–Mehl–Avrami–Kolmogorov parameters. Phys Chem Chem Phys 2013; 15:9940-6. [DOI: 10.1039/c3cp50909e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yang WS, Wong MY, Vogtmann E, Tang RQ, Xie L, Yang YS, Wu QJ, Zhang W, Xiang YB. Meat consumption and risk of lung cancer: evidence from observational studies. Ann Oncol 2012; 23:3163-3170. [PMID: 22855553 PMCID: PMC3501234 DOI: 10.1093/annonc/mds207] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Revised: 05/23/2012] [Accepted: 05/23/2012] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND A number of epidemiological studies have reported inconsistent findings on the association between meat consumption and lung cancer. DESIGN We therefore conducted a systematic review and meta-analysis to investigate the relationship between meat consumption and lung cancer risk in epidemiological studies. RESULTS Twenty-three case-control and 11 cohort studies were included. All studies adjusted for smoking or conducted in never smokers. The summary relative risks (RRs) of lung cancer for the highest versus lowest intake categories were 1.35 (95% confidence interval (CI) 1.08-1.69) for total meat, 1.34 (95% CI 1.18-1.52) for red meat, and 1.06 (95% CI 0.90-1.25) for processed meat. An inverse association was found between poultry intake and lung cancer (RR = 0.91, 95% CI 0.85-0.97), but not for total white meat (RR = 1.06, 95% CI 0.82-1.37) or fish (RR = 1.01, 95% CI 0.96-1.07). CONCLUSIONS The relationship between meat intake and lung cancer risk appears to depend on the types of meat consumed. A high intake of red meat may increase the risk of lung cancer by about 35%, while a high intake of poultry decreases the risk by about 10%. More well-designed cohort studies on meat mutagens or heme iron, meat cooking preferences, and doneness level are needed to fully characterize this meat-lung cancer association.
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Affiliation(s)
- W S Yang
- State Key Laboratory of Oncogene and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai; Department of Epidemiology, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - M Y Wong
- Department of Mathematics, The Hong Kong University of Science & Technology, Hong Kong, China
| | - E Vogtmann
- State Key Laboratory of Oncogene and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai; Department of Epidemiology, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Department of Epidemiology, University of Alabama at Birmingham, Birmingham, USA
| | - R Q Tang
- State Key Laboratory of Oncogene and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai; Department of Epidemiology, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - L Xie
- State Key Laboratory of Oncogene and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai; Department of Epidemiology, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Y S Yang
- Department of Mathematics, The Hong Kong University of Science & Technology, Hong Kong, China
| | - Q J Wu
- State Key Laboratory of Oncogene and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai; Department of Epidemiology, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - W Zhang
- State Key Laboratory of Oncogene and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai; Department of Epidemiology, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Y B Xiang
- State Key Laboratory of Oncogene and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai; Department of Epidemiology, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
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Yang YS, Zhou JT, Lu H, Yuan YL, Zhao LH. Isolation and characterization of Streptomyces spp. strains F-6 and F-7 capable of decomposing alkali lignin. Environ Technol 2012; 33:2603-2609. [PMID: 23437660 DOI: 10.1080/09593330.2012.672473] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Biodegradation and bioconversion of lignin are the result of the combined action of fungi, bacteria and actinomycetes. Through screening from forest soil, two novel isolated actinomycete strains were identified as Streptomyces spp. strains F-6 and F-7 by their morphology, cultural characteristics and high homology to the 16S rRNA gene. Both strains possessed laccase and manganese peroxidase activities. Laccase activity produced by strain F-6 was up to 935.4 U g(-1) dry cell weight. More than 50% of alkali lignin was removed by strains F-6 and F-7 in 12 days of incubation. GC-MS analysis of the biodegraded products showed strain F-6 converted lignin into phenol and broken phenol compounds. The two strains could co-culture with white-rot fungus, and the combined actinonycete-fungus system decomposed alkali lignin effectively.
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Affiliation(s)
- Y S Yang
- School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
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41
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Meng ZH, Yang YS, Cheng KL, Chen GQ, Wang LP, Li W. A huge malignant peripheral nerve sheath tumor with hepatic metastasis arising from retroperitoneal ganglioneuroma. Oncol Lett 2012; 5:123-126. [PMID: 23255906 DOI: 10.3892/ol.2012.961] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Accepted: 09/05/2012] [Indexed: 11/06/2022] Open
Abstract
Ganglioneuromas (GNs) are the rarest and most benign of the neuroblastic tumors. We experienced a case of huge retroperitoneal GN which differentiated into malignant peripheral nerve sheath tumors (MPNST) with hepatic metastasis. The tumor was located in the upper right quarter of the abdomen and pressed the right lobe of the liver, which was initially misdiagnosed as a liver carcinoma. The tumor shared blood supply with the right liver lob and had rich blood supplies from the abdominal aorta, renal artery and hepatic artery. It was also associated with skin pigment and recurrence shortly following resection. Our finding demonstrated that MPNST is a potent invasive malignant tumor and metastasis earlier with very poor prognosis.
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Affiliation(s)
- Z H Meng
- Departments of Hepatobiliary-Pancreatic Surgery
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42
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Wang YD, Stevenson AW, Yang YS, Trinchi A, Wilkins SW, Ren YQ, Xiao TQ. A quantitative study of monochromatic X-ray transmission through zinc wires. J Synchrotron Radiat 2012; 19:827-830. [PMID: 22898964 DOI: 10.1107/s0909049512027756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Accepted: 06/19/2012] [Indexed: 06/01/2023]
Abstract
X-ray transmission through zinc wires of various diameters has been investigated systematically at different beam energies and sample-to-detector distances at the Shanghai Synchrotron Radiation Facility. This analysis shows that the experimentally measured transmission differs significantly from the theoretical estimation unless an appropriate point-spread function/line-spread function (PSF/LSF) is incorporated in the analysis. A number of other possible factors which may contribute to the observed inconsistencies were also assessed and these factors included higher harmonics and fluorescence; however, it was determined that these were not the dominant contributors underlying the inconsistencies. The investigation has demonstrated that the PSF/LSF is a major factor for consideration in quantitative X-ray micro-computed tomography.
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Affiliation(s)
- Y D Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
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43
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Yang YS, Chang FY, Wang NC. A rare skin presentation of Penicillium marneffei infection in an AIDS patient. Int J STD AIDS 2012; 23:64-5. [PMID: 22362695 DOI: 10.1258/ijsa.2009.009118] [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: 11/18/2022]
Abstract
Penicillium marneffei is an opportunistic fungal pathogen in HIV disease. We report the case of a patient with AIDS who presented with general weakness and generalized skin rashes. No specific allergic history or recent medication were reported. The skin lesions disappeared after adequate antifungal therapy. A blood culture obtained from the patient confirmed the presence of P. marneffei, infection which is characterized by cutaneous umbilicated lesions in AIDS patients. We report this case on account of the unusual skin presentation.
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Affiliation(s)
- Y S Yang
- Division of Infectious Disease and Tropical Medicine, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
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Kim JY, Kim DH, Kim JH, Lee D, Jeon HB, Kwon SJ, Kim SM, Yoo YJ, Lee EH, Choi SJ, Seo SW, Lee JI, Na DL, Yang YS, Oh W, Chang JW. Soluble intracellular adhesion molecule-1 secreted by human umbilical cord blood-derived mesenchymal stem cell reduces amyloid-β plaques. Cell Death Differ 2011; 19:680-91. [PMID: 22015609 PMCID: PMC3307982 DOI: 10.1038/cdd.2011.140] [Citation(s) in RCA: 143] [Impact Index Per Article: 11.0] [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] [Indexed: 02/08/2023] Open
Abstract
Presently, co-culture of human umbilical cord blood mesenchymal stem cells (hUCB-MSCs) with BV2 microglia under amyloid-β42 (Aβ42) exposure induced a reduction of Aβ42 in the medium as well as an overexpression of the Aβ-degrading enzyme neprilysin (NEP) in microglia. Cytokine array examinations of co-cultured media revealed elevated release of soluble intracellular adhesion molecule-1 (sICAM-1) from hUCB-MSCs. Administration of human recombinant ICAM-1 in BV2 cells and wild-type mice brains induced NEP expression in time- and dose-dependent manners. In co-culturing with BV2 cells under Aβ42 exposure, knockdown of ICAM-1 expression on hUCB-MSCs by small interfering RNA (siRNA) abolished the induction of NEP in BV2 cells as well as reduction of added Aβ42 in the co-cultured media. By contrast, siRNA-mediated inhibition of the sICAM-1 receptor, lymphocyte function-associated antigen-1 (LFA-1), on BV2 cells reduced NEP expression by ICAM-1 exposure. When hUCB-MSCs were transplanted into the hippocampus of a 10-month-old transgenic mouse model of Alzheimer's disease for 10, 20, or 40 days, NEP expression was increased in the mice brains. Moreover, Aβ42 plaques in the hippocampus and other regions were decreased by active migration of hUCB-MSCs toward Aβ deposits. These data suggest that hUCB-MSC-derived sICAM-1 decreases Aβ plaques by inducing NEP expression in microglia through the sICAM-1/LFA-1 signaling pathway.
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Affiliation(s)
- J-Y Kim
- Biomedical Research Institute, MEDIPOST Co. Ltd., Seoul 137-874, Republic of Korea
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45
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Yim YS, Noh YH, Kim DH, Lee MW, Cheuh HW, Lee SH, Yoo KH, Jung HL, Sung KW, Choi SJ, Oh WI, Yang YS, Koo HH. Correlation between the immature characteristics of umbilical cord blood-derived mesenchymal stem cells and engraftment of hematopoietic stem cells in NOD/SCID mice. Transplant Proc 2011; 42:2753-8. [PMID: 20832581 DOI: 10.1016/j.transproceed.2010.05.146] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Revised: 02/09/2010] [Accepted: 05/12/2010] [Indexed: 12/26/2022]
Abstract
Umbilical cord blood (UCB)-derived mesenchymal stem cells (MSC) facilitate the engraftment of human (h) hematopoietic stem cells when transplanted simultaneously in animal and human studies. However, the type of MSCs that preferentially enhance the engraftment of HSCs is unknown. Recent studies have shown that MSCs derived from a single source are heterogeneous in terms of cell size, morphology, proliferation rate, and differentiation potential. This study was designed to investigate the properties of UCB-MSCs, which influence the engraftment of hHSCs in a NOD/SCID mouse model. We categorized MSCs as being the most effective (UCB-352 MSCs) or the least effective (UCB-156 MSCs) at promoting the homing and engraftment of HSCs, and compared the characteristics of these 2 MSC populations. We observed that the 2 populations showed differences in characteristics typical of immature MSCs, and related to proliferation potential. We showed that UCB-352 MSCs, which proliferate quickly, preferentially enhanced the engraftment of HSCs in NOD/SCID mice. In addition, we observed differences in the pattern of both PODXL and Oct4 expression, and in the levels of cytokines such as SDF-1 and SCF using flow cytometry and membrane arrays. The more effective UCB-352 MSCs expressed higher levels of PODXL and Oct4, which were associated with immaturity, than did the UCB-156 MSCs. Furthermore, UCB-352 cells secreted greater levels of SDF-1 and SCF, both of which are required for hematopoiesis. We propose that the proliferation potential of UCB-MSCs, coupled with their immature characteristics, may serve as a novel standard to promote the homing and engraftment of HSCs.
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Affiliation(s)
- Y S Yim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Yang YS, Tulloh AM, Muster T, Trinchi A, Mayo SC, Wilkins SW. Data-constrained microstructure modeling with multi-spectrum x-ray CT. ACTA ACUST UNITED AC 2010. [DOI: 10.1117/12.861964] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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47
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Liu W, Zhou Q, Li P, Gao H, Han YP, Li XJ, Yang YS, Li Y. DNA mismatch repair related gene expression as potential biomarkers to assess cadmium exposure in Arabidopsis seedlings. J Hazard Mater 2009; 167:1007-1013. [PMID: 19250749 DOI: 10.1016/j.jhazmat.2009.01.093] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Received: 05/29/2008] [Revised: 01/12/2009] [Accepted: 01/22/2009] [Indexed: 05/27/2023]
Abstract
In the current study, Arabidopsis seedlings were hydroponically grown on MS media containing cadmium (Cd) of 0-2.0 mg L(-1) for 60 h of treatment. Gene expression profiles were used to relate exposure to Cd with some altered biological responses and/or specific growth effects. RT-PCR analysis was used to quantitate mRNA expression for seven genes known to be involved in DNA mismatch repair (MMR) system and cell division. Results indicated that Cd concentrations of 0.25-2.0 mg L(-1) cause increased total soluble protein levels in shoots of Arabidopsis seedlings in an inverted U-shaped dose-response manner. Exposure to 0.25 and 0.5 mg L(-1) of Cd dramatically induced expression of four genes (i.e. proliferating cell nuclear antigen 2 (atPCNA 2), MutL1 homolog (atMLH1), MutS 2 homolog (atMSH2) and atMSH3) and five genes (i.e. atPCNA1,2, atMLH1 and atMSH2,7), respectively, in shoots of Arabidopsis seedlings; Exposure to 1.0 mg L(-1) of Cd significantly elevated expression of only two genes (atMSH6,7), but caused prominent inhibition in expression of three genes (atPCNA2, atMLH1 and atMSH3) in shoots of Arabidopsis seedlings. The expression alterations of the above genes were independent of any biological effects such as survival, fresh weight and chlorophyll level of shoots. However, shoots of Arabidopsis seedlings exposed to 2.0 mg L(-1) of Cd exhibited statistically prominent repression in expression of these seven genes, and showed incipient reduction of fresh weight and chlorophyll level. This research provides data concerning sensitivity of expression profiles of atMLH1, atMSH2,3,6,7 and atPCNA1,2 genes in Arabidopsis seedlings to Cd exposure, as well as the potential use of these gene expression patterns as representative molecular biomarkers indicative of Cd exposure and related biological effects.
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Affiliation(s)
- Wan Liu
- Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, PR China
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48
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Lin S, Jin Y, Fu L, Quan C, Yang YS. Microbial community variation and functions to excess sludge reduction in a novel gravel contact oxidation reactor. J Hazard Mater 2009; 165:1083-1090. [PMID: 19070427 DOI: 10.1016/j.jhazmat.2008.10.106] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 09/22/2008] [Revised: 10/22/2008] [Accepted: 10/23/2008] [Indexed: 05/27/2023]
Abstract
Excess biomass produced within the degradation processes of organic pollutants is creating environmental challenges. The gravel contact oxidation reactor (GCOR) filled with crushed stone globular aggregates as carriers, has been demonstrated capable of reducing the excess sludge effectively in some pilot and small-scale engineering studies. In order to evaluate the variation and structure of the microbial community and their functions to excess sludge reduction in GCOR, a conventional activated sludge reactor (ASR) was studied as a comparison. The 16S rDNA library of the universal bacteria was constructed, Shannon's diversity index (H) and Species evenness (E) were calculated with distance-based operational taxonomic unit and richness (DOTUR) for microbial diversity. Real-time quantity PCR and optical microscope were used for absolute bacterial DNA concentration and eukarya identification, respectively. Meanwhile, the suspended solid index in GCOR and ASR was detected for assessing the excess sludge production. The results indicated that the most abundant bacteria in GCOR were those related to the beta-Proteobacteria group, then gamma-Proteobacteria and to Cytophaga-Flexibacter-Bacteriode (CFB). In the ASR samples major bacteria were in the closest match with gamma-Proteobacteria, then beta-Proteobacteria and CFB. Shannon's index (H) was higher (3.41) for diversity of bacteria extracted from the carrier samples in GCOR than that (2.71) from the sludge sample in ASR. Species evenness (E) for the isolates from GCOR and ASR samples was 0.97 and 0.96, respectively. Comparison of the universal bacteria population in GCOR and ASR shows that the total bacterial DNA concentration on the GCOR carriers were 8.98 x 10(5) microg/ microl, twice that in ASR of 4.67 x 10(5) microg/ microl under normal operation of two reactors. But the MLSS in GCOR was only 4.5mg/L, 25 times less than that in ASR of 115.4 mg/L. The most representative eukarya were protozoa both in GCOR (15 no. per 20 ml) and in ASR (15 no. per 20 ml); the next abundant group was attachment plants 10 no. per 20 ml in GCOR and 4 no. per 20 ml in ASR, respectively. Rotifers and copepoda belonging to metazoan were only present in GCOR (8 no. per 20 ml for both rotifers and copepoda). The microbial diversity and population difference both in the GCOR carriers and ASR sludge indicated that the diverse microbes, a large amount of biomass forming longer microbial food chains attached on the carriers may be the main functions for the excess sludge reduction in GCOR.
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Affiliation(s)
- Shanshan Lin
- School of Urban and Environmental Science, Northeast Normal University, Changchun, China
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Liu W, Yang YS, Li PJ, Zhou QX, Xie LJ, Han YP. Risk assessment of cadmium-contaminated soil on plant DNA damage using RAPD and physiological indices. J Hazard Mater 2009; 161:878-883. [PMID: 18502577 DOI: 10.1016/j.jhazmat.2008.04.038] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2007] [Revised: 03/17/2008] [Accepted: 04/12/2008] [Indexed: 05/26/2023]
Abstract
Impact assessment of contaminants in soil is an important issue in environmental quality study and remediation of contaminated land. A random amplified polymorphic DNA (RAPD) 'fingerprinting' technique was exhibited to detect genotoxin-induced DNA damage of plants from heavy metal contaminated soil. This study compared the effects occurring at molecular and population levels in barley seedlings exposed to cadmium (Cd) contamination in soil. Results indicate that reduction of root growth and increase of total soluble protein level in the root tips of barley seedlings occurred with the ascending Cd concentrations. For the RAPD analyses, nine 10-base pair (bp) random RAPD primers (decamers) with 60-70% GC content were found to produce unique polymorphic band patterns and subsequently were used to produce a total of 129 RAPD fragments of 144-2639 base pair in molecular size in the root tips of control seedlings. Results produced from nine primers indicate that the changes occurring in RAPD profiles of the root tips following Cd treatment included alterations in band intensity as well as gain or loss of bands compared with the control seedlings. New amplified fragments at molecular size from approximately 154 to 2245 bp appeared almost for 10, 20 and 40 mg L(-1) Cd with 9 primers (one-four new polymerase chain reaction, (PCR) products), and the number of missing bands enhanced with the increasing Cd concentration for nine primers. These results suggest that genomic template stability reflecting changes in RAPD profiles were significantly affected and it compared favourably with the traditional indices such as growth and soluble protein level at the above Cd concentrations. The DNA polymorphisms detected by RAPD can be applied as a suitable biomarker assay for detection of the genotoxic effects of Cd stress in soil on plants. As a tool in risk assessment the RAPD assay can be used in characterisation of Cd hazard in soil.
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Affiliation(s)
- Wan Liu
- KeyLaboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, PR China
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50
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Liu W, Yang YS, Francis D, Rogers HJ, Li P, Zhang Q. Cadmium stress alters gene expression of DNA mismatch repair related genes in Arabidopsis seedlings. Chemosphere 2008; 73:1138-1144. [PMID: 18722640 DOI: 10.1016/j.chemosphere.2008.07.020] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Received: 01/07/2008] [Revised: 05/21/2008] [Accepted: 07/09/2008] [Indexed: 05/26/2023]
Abstract
Cadmium (Cd) is a non essential element, and is a widespread environmental pollutant. Exposure to Cd can result in a variety of adverse health effects in plant and humans. In the current study, Arabidopsis seedlings were used as a bio-indicator of Cd pollution. Seedlings were grown on MS media containing 0-6.0 mg L(-1) Cd for 18 days, and the gene expression patterns were used to link increased Cd exposure with progressive biological effects. Reduction of total soluble protein content in shoots of the Arabidopsis seedlings occurred with increase in Cd concentrations. For the gene expression patterns, seven genes known to be involved in cell division and DNA mismatch repair (MMR) system were investigated by semi-quantitative RT-PCR, and normalized using 18S rRNA gene expression. Expression of the proliferating cell nuclear antigen 2 (atPCNA 2), MutS 3 homolog (atMSH 3) and MutL1 homolog (atMLH1) genes in shoots of Arabidopsis was strongly induced by exposure to 0.75 mg L(-1) Cd, but were repressed by other Cd concentrations whereas exposure to 0.75-6 mg L(-1) of Cd resulted in a decreased expression of atPCNA1, atMSH 2, 6 and 7 genes independently of any observable biological effects, including survival, fresh weight and chlorophyll level of shoots. This work demonstrated that specific gene expression changes could serve as useful molecular biomarkers indicative of Cd exposure and related biological effects.
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Affiliation(s)
- W Liu
- Cardiff University, School of Earth Sciences, Cardiff CF10 3YE, UK
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