1
|
Wang Y, Zhu J, Guo D, Yan K, Lu L, Wang S, Jin D, Ye X, Wang Q. Deep Learning for Automatic Prediction of Lymph Node Station Metastasis in Esophageal Cancer Patients from Contrast-Enhanced CT. Int J Radiat Oncol Biol Phys 2023; 117:S55. [PMID: 37784523 DOI: 10.1016/j.ijrobp.2023.06.347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The diagnosis of lymph node (LN) metastasis in computed tomography (CT) is an essential yet challenging task in esophageal cancer staging and treatment planning. Although criteria (e.g., RECIST, morphological/texture features) are proposed to predict LN metastasis, the diagnostic accuracy remains low with sensitivity <50% and specificity <75%, as reported in previous studies. Deep learning (DL) has the potential to address this issue by learning from large-scale labeled data. However, due to the practical surgery procedure in lymph node dissection, it is difficult to pair the metastasis of individual LN reported in the pathology report to the LN instance found in the CT image. Hence, in this study, we first use pathology reports to determine the LNS metastasis, then develop a multiple instance deep learning (MIDL) model to predict lymph node station (LNS) metastasis. MATERIALS/METHODS We collected 1200 esophageal cancer patients with preoperative contrast-enhanced CT before surgery. A recently developed automatic mediastinal LNS segmentation model was first applied to segment LNS of 1 to 8 based on the IASLC protocol. For each LNS, the local CT region of interest (ROI) was cropped to generate a station-wise CT patch, where the LNS was labeled as metastatic if at least one metastatic LN was indicated in the pathology report. Using the station-wise CT patch and LNS label, we train a 3D MIDL model, MobileNetV3, to predict LNS metastasis. To better provide the LN position priors in MIDL, LN instances (with a short axis >4mm) were also segmented using an automatic LN detection algorithm and were added to the MIDL model as an auxiliary input. Five-fold cross-validation was conducted to evaluate the MIDL performance. RESULTS The MIDL model's performance is summarized in Table 1. The MIDL model incorporating an additional LN instance mask demonstrated a superior overall AUC of 0.7539, surpassing the model without the LN mask input by 2.93%. The specificity was evaluated at a threshold resulting in a recall of 0.7, and the best model outperformed the CT input model in terms of specificity by 2.11%. This highlights the value of including the LN position prior to the MIDL model. Notably, when a threshold was set to result in a specificity of 75%, the best MIDL model demonstrated a significantly higher recall compared to the previously reported clinical diagnostic recall (39.7% vs. 63.21%). CONCLUSION We developed a MIDL classification model to predict LNS metastasis using CT scans of 1200 patients. Our findings suggest that the MIDL model can substantially improve LNS metastasis prediction and has the potential to play an essential role in cancer staging, treatment planning, and prognostic analysis.
Collapse
Affiliation(s)
- Y Wang
- Alibaba Group (US) Inc., New York, NY
| | - J Zhu
- Department of Radiation Oncology, Sichuan Cancer Hospital and Institution, Sichuan Cancer Center, Radiation Oncology Key Laboratory of Sichuan Province, Chengdu, China
| | - D Guo
- Alibaba Group (US) Inc., New York, NY
| | - K Yan
- Alibaba DAMO Academy, Beijing, China
| | - L Lu
- Alibaba Group (US) Inc., New York, NY
| | - S Wang
- School of Mechanical, Electrical and Information Engineering, Shandong University, Weihai, China
| | - D Jin
- Alibaba Group (US) Inc., New York, NY
| | - X Ye
- Department of Radiation Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Q Wang
- Department of Radiation Oncology, Sichuan Cancer Hospital and Institution, Sichuan Cancer Center, Radiation Oncology Key Laboratory of Sichuan Province, Chengdu, China
| |
Collapse
|
2
|
Zhang XN, Yan K, You XD, Li JH, Zhang N, Wang GY, Liao MZ, Ma W. [Acceptance of pre-exposure prophylaxis and post-exposure prophylaxis against HIV and related factors in men who have sex with men in Shandong Province]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:1352-1357. [PMID: 37743265 DOI: 10.3760/cma.j.cn112338-20230202-00052] [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: 09/26/2023]
Abstract
Objectives: To understand the use of pre-exposure prophylaxis (PrEP) and post-exposure prophylaxis (PEP) and related factors in men who have sex with men (MSM) in Shandong Province, and provide reference for the promotion of PrEP and PEP in MSM. Methods: From April to July in 2022, MSM were recruited from 7 sentinel surveillance sites in Shandong Province for a questionnaire survey, and the sample size of each city site was 400. The information about sociodemographic characteristics, sexual behaviors, the uses of PrEP and PEP and others were collected from the MSM, and blood samples were collected from them for HIV and syphilis testing. Results: A total of 2 815 MSM were investigated, the majority of them were aged less than 30 years (55.7%, 1 569/2 815), unmarried (68.6%, 1 931/2 815) and had education background of college and above (56.5%, 1 590/2 815). Only 9.2% (258/2 815) had used PrEP and 10.8% (305/2 815) had used PEP. Multivariate logistic regression showed that factors associated with high likelihood of PrEP use in MSM included age ≤30 years (aOR=4.04, 95%CI:1.25-13.01), self-perceived lower risk of HIV infection (aOR=1.76, 95%CI:1.16-2.68), group sex and commercial sex in the past six months (aOR=1.51, 95%CI: 1.10-2.09; aOR=1.69, 95%CI: 1.16-2.47), new-type drug use (aOR=1.53, 95%CI: 1.11-2.11), receiving peer education (aOR=1.56, 95%CI: 1.03-2.37), other people using PrEP (aOR=3.29, 95%CI: 2.48-4.36), and being HIV negative (aOR=8.40, 95%CI:1.12-63.12). Factor associated with low likelihood of PrEP use in MSM was anal sex with casual partner (aOR=0.67, 95%CI:0.49-0.90). Factors associated with high likelihood of PEP use in MSM included age under 50 years (≤30 years old: aOR=2.41, 95%CI:1.02-5.69; 31-49 years old: aOR=3.33, 95%CI:1.42-7.85), no self-perceived risk for HIV infection (aOR=1.87, 95%CI:1.12-3.11), group sex in the past six months (aOR=1.68, 95%CI:1.23-2.29), new-type drug use (aOR=3.86, 95%CI:2.94-5.07) and receiving no peer education (aOR=1.54, 95%CI:1.12-2.12). Conclusions: In Shandong, a higher proportion of MSM used PrEP and PEP. Peer education and self-perceived HIV infection risk education should be strengthened to increase the rates of PrEP and PEP use in MSM.
Collapse
Affiliation(s)
- X N Zhang
- Department of Epidemiology, School of Public Health, Cheeloo College of Medicine, Shandong University, Ji'nan 250012, China
| | - K Yan
- Department of AIDS/STD Control and Prevention, Shandong Provincial Center for Disease Control and Prevention, Ji'nan 250014, China
| | - X D You
- Department of AIDS/STD Control and Prevention, Shandong Provincial Center for Disease Control and Prevention, Ji'nan 250014, China
| | - J H Li
- Department of AIDS/STD Control and Prevention, Shandong Provincial Center for Disease Control and Prevention, Ji'nan 250014, China
| | - N Zhang
- Department of AIDS/STD Control and Prevention, Shandong Provincial Center for Disease Control and Prevention, Ji'nan 250014, China
| | - G Y Wang
- Department of AIDS/STD Control and Prevention, Shandong Provincial Center for Disease Control and Prevention, Ji'nan 250014, China
| | - M Z Liao
- Department of AIDS/STD Control and Prevention, Shandong Provincial Center for Disease Control and Prevention, Ji'nan 250014, China
| | - W Ma
- Department of Epidemiology, School of Public Health, Cheeloo College of Medicine, Shandong University, Ji'nan 250012, China
| |
Collapse
|
3
|
Wijayawardena MAA, Yan K, Liu Y, Naidu R. Can the mouse model successfully predict mixed metal(loid)s bioavailability in humans from contaminated soils? Chemosphere 2023; 311:137113. [PMID: 36356801 DOI: 10.1016/j.chemosphere.2022.137113] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 10/20/2022] [Accepted: 10/31/2022] [Indexed: 06/16/2023]
Abstract
Mouse models have been employed by many scientific research groups worldwide to predict the bioavailability of metal (loid)s and other chemicals in humans. Their suitability for predicting mixed metal (loid) bioavailability has been questioned and debated for decades by many research teams. In this study soils contaminated by lead (Pb) and arsenic (As), either in the field or by spiking in the laboratory, were used in bioavailability and bioaccessibility tests. The spiked soils were aged for more than a year prior to testing to achieve steady state and eliminate soil ageing effects, as reported in previous research. The bioavailability of, firstly, Pb in the presence of As and secondly, As in the presence of Pb was determined using mice. Furthermore, bioaccessibility was determined using a range of in vitro methods: relative bioaccessibility leaching procedure (RBALP), the Unified Bioaccessibility Research Group Europe (BARGE) method (UBM) gastric and intestinal phases, and the National Institute for Public Health and the Environment (RIVM) gastric and intestinal phases. The correlations between Pb and As bioavailability and their in vitro bioaccessibility when they were present in mixtures were analysed. The results indicated that the bioavailability of Pb in mice kidney tissues significantly correlated with bioaccessibility of Pb in RBALP (p < 0.01), UBM gastric (p < 0.01) and intestinal phases (p < 0.01) and RIVM gastric phases when Pb is present in metal (loid) mixtures. Results of the current study reveal that the RBALP, and UBM gastric and intestinal phase were by far the best methods for predicting the RB of Pb when it is present in metal (loid) mixtures. Consequently, the mouse model can successfully explain the in vivo in vitro correlation (IVIVC) of Pb when it is present in metal (loid) mixtures. However, we did find that a mouse model may not be the best one to explain the IVIVC of As when it is present in metal (loid) mixtures.
Collapse
Affiliation(s)
- M A A Wijayawardena
- Global Centre for Environmental Remediation (GCER), University of Newcastle, Australia; CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), ATC Building University of Newcastle, Callaghan, NSW, 2308, Australia.
| | - K Yan
- Global Centre for Environmental Remediation (GCER), University of Newcastle, Australia; CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), ATC Building University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Y Liu
- Global Centre for Environmental Remediation (GCER), University of Newcastle, Australia; CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), ATC Building University of Newcastle, Callaghan, NSW, 2308, Australia
| | - R Naidu
- Global Centre for Environmental Remediation (GCER), University of Newcastle, Australia; CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), ATC Building University of Newcastle, Callaghan, NSW, 2308, Australia.
| |
Collapse
|
4
|
Zhang K, Jiang SY, Yan K, Zhang P, Gao RW, Zhao J, Hu XJ, Liu Q, Ge YL, Wang XS, Chen WM, Shi Y, Zhai XW, Cao Y. [Clinical characteristics of 16 neonates infected with SARS-CoV-2 during Omicron variant outbreak]. Zhonghua Er Ke Za Zhi 2022; 60:1158-1162. [PMID: 36319150 DOI: 10.3760/cma.j.cn112140-20220617-00561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To analyze the clinical characteristics of the neonates infected with SARS-CoV-2 during the Omicron outbreak in Shanghai 2022. Methods: In this retrospective case series study, all the 16 neonates with SARS-CoV-2 Omicron infection who were admitted to the neonatal unit in Shanghai Public Health Clinical Center from March 1st to May 31st, 2022 were enrolled. Their epidemiological history, clinical manifestations, nucleic acid cycle threshold (Ct) value and outcomes were analyzed. Based on maternal vaccination, they were divided into vaccinated group and unvaccinated group. Rank sum test and Chi-square test were used for the comparison between the groups. Results: Among the 16 neonates, 10 were male, and 6 were female. All the infants were full-term. The infection was confirmed at the age of 12.5 (8.0, 20.5) days. All the neonates had a history of exposure to infected family members, and thus horizontal transmission was the primary mode. Four infants were asymptomatic, 12 were symptomatic, and there were no severe or critical cases. The most common clinical manifestation was fever (11 cases), with the highest temperature of 38.1 (37.9, 38.3) ℃ and a course of 1-5 days. Other clinical manifestations included nasal obstruction (3 cases), runny nose (2 cases), cough (2 cases), poor feeding (2 cases), vomiting (1 case), and mild tachypnea (1 case). The complete blood counts of all neonates were within the normal range, and the C-reactive protein increased slightly in 1 infant. Chest imaging was performed in 2 infants, showing mild focal exudative changes. Nucleic acid turned negative (Ct value ≥35) within 7-15 days after diagnosis. All neonates fully recovered after supportive treatment, and the length of hospitalization was 13 (10, 14) days. In the telephone follow-up 2 weeks after discharge for all 16 cases, no infant showed reoccurrence of clinical manifestations or nucleic acid reactivation. Maternal vaccination was not significantly correlated with symptomatic infection or the persistence of positive nucleic acid result in neonates (all P>0.05). Conclusions: Horizontal transmission is the primary mode for neonatal SARS-CoV-2 Omicron infection. Neonatal infections are usually mild or asymptomatic, with good short-term outcomes. And their clinical manifestations and laboratory examinations are nonspecific.
Collapse
Affiliation(s)
- K Zhang
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - S Y Jiang
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - K Yan
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - P Zhang
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - R W Gao
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - J Zhao
- Department of Neonatology, Shanghai Public Health Clinical Center, Shanghai 201508, China
| | - X J Hu
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Q Liu
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Y L Ge
- Department of Infectious Diseases,Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - X S Wang
- Department of Infectious Diseases,Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - W M Chen
- Pediatric Intensive Care Unit, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Y Shi
- Department of Rheumatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - X W Zhai
- Department of Hematology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Y Cao
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| |
Collapse
|
5
|
Li SJ, Zhang L, Yuan H, Zhang XB, Wang CQ, Liu GB, Gu Y, Yang TL, Zhu XT, Zhai XW, Shi Y, Jiang SY, Zhang K, Yan K, Zhang P, Hu XJ, Liu Q, Gao RW, Zhao J, Zhou JG, Cao Y, Li ZH. [Management and short-term outcomes of neonates born to mothers infected with SARS-CoV-2 Omicron variant]. Zhonghua Er Ke Za Zhi 2022; 60:1163-1167. [PMID: 36319151 DOI: 10.3760/cma.j.cn112140-20220613-00545] [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: 06/16/2023]
Abstract
Objective: To summarize the management and short-term outcomes of neonates delivered by mothers infected with SARS-CoV-2 Omicron variant. Methods: A retrospective study was performed on 158 neonates born to mothers infected with SARS-CoV-2 Omicron variant admitted to the isolation ward of Children's Hospital of Fudan University from March 15th, 2022 to May 30th, 2022. The postnatal infection control measures for these neonates, and their clinical characteristics and short-term outcomes were analyzed. They were divided into maternal symptomatic group and maternal asymptomatic group according to whether their mothers had SARS-CoV-2 symptoms. The clinical outcomes were compared between the 2 groups using Rank sum test and Chi-square test. Results: All neonates were under strict infection control measures at birth and after birth. Of the 158 neonates, 75 (47.5%) were male. The gestational age was (38+3±1+3) weeks and the birth weight was (3 201±463)g. Of the neonates included, ten were preterm (6.3%) and the minimum gestational age was 30+1 weeks. Six neonates (3.8%) had respiratory difficulty and 4 of them were premature and required mechanical ventilation. All 158 neonates were tested negative for SARS-COV-2 nucleic acid by daily nasal swabs for the first 7 days. A total of 156 mothers (2 cases of twin pregnancy) infected with SARS-CoV-2 Omicron variant, the time from confirmed SARS-CoV-2 infection to delivery was 7 (3, 12) days. Among them, 88 cases (56.4%) showed clinical symptoms, but none needed intensive care treatment. The peripheral white blood cell count of the neonates in maternal symptomatic group was significantly higher than that in maternal symptomatic group (23.0 (18.7, 28.0) × 109 vs. 19.6 (15.4, 36.6) × 109/L, Z=2.44, P<0.05). Conclusions: Neonates of mothers infected with SARS-CoV-2 Omicron variant during third trimester have benign short-term outcomes, without intrauterine infection through vertical transmission. Strict infection control measures at birth and after birth can effectively protect these neonates from SARS-CoV-2 infection.
Collapse
Affiliation(s)
- S J Li
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - L Zhang
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - H Yuan
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - X B Zhang
- Department of Respiratory Medicine, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - C Q Wang
- Department of Infectious Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - G B Liu
- Department of Medical Affairs, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Y Gu
- Department of Nursing, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - T L Yang
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - X T Zhu
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - X W Zhai
- Department of Hematology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Y Shi
- Department of Rheumatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - S Y Jiang
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - K Zhang
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - K Yan
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - P Zhang
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - X J Hu
- Department of Nursing, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Q Liu
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - R W Gao
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - J Zhao
- Department of Neonatology, Shanghai Public Health Clinical Center, Shanghai 201508, China
| | - J G Zhou
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Y Cao
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Z H Li
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| |
Collapse
|
6
|
Wang LN, Yan K, Yu HY, Huang PX, Wang GY, Liao MZ, Ma W. [Analysis of related factors of new-type drug use and recent HIV infection among men who have sex with men in Shandong province]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1632-1638. [PMID: 36456496 DOI: 10.3760/cma.j.cn112338-20220516-00421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Objective: To understand the related factors of new-type drug use and recent HIV infection among men who have sex with men (MSM), and provide a reference for formulating targeted strategies for HIV/AIDS prevention and control. Methods: MSM were recruited in sentinel surveillance sites of nine cities in Shandong province from April to July 2021, with a sample size of 400 in each city. A face-to-face questionnaire was conducted to collect demographic characteristics, high-risk behaviors, acceptance of HIV intervention services, etc. Blood samples were collected for HIV and syphilis antibodies detection. Limiting-antigen avidity enzyme immunoassay (LAg-Avidity EIA) was used to detect recent HIV infection, and the rate of recent HIV infection was calculated. Results: 3 624 MSM were under study with the following characteristics as: aged (32.70±9.33) years old, the aged 30 and above (59.52%, 2 157/3 624), with high school education or below (55.99%, 2 029/3 624), being unmarried/divorced/widowed (57.70%, 2 091/3 624) and as having homosexual orientation (86.26%, 3 126/3 624) accounted for the more mainly. Of 32.95% (1 194/3 624) had same-sex unprotected anal sex in recent six months; 27.48% (993/3 613) ever used new-type drugs, and the HIV antibody positive rate was 3.12% (113/3 624). The recent HIV infection rate appeared as 2.61% (95%CI: 1.73%-3.49%). The multivariable logistic regression analysis indicated that the related factors of new-type drug use were unmarried/divorced/widowed (compared with being married/cohabitating, aOR=1.43, 95%CI: 1.22-1.69), educational level of college or above (compared with educational level of high school or below, aOR=1.47, 95%CI: 1.25-1.72), mainly through the Internet/dating software to find male sex partners (compared with mainly through bars/baths/parks and other places to find male sex partners, aOR=1.76, 95%CI: 1.41-2.19). Those who had unprotected anal sex in the last six months (compared with no unprotected anal sex, aOR=1.33, 95%CI: 1.13-1.57), had sexually transmitted diseases in the past year (compared with no sexually transmitted disease, aOR=2.77, 95%CI: 2.04-3.76) were more likely to use new-type drugs. The multinominal logistic regression showed that MSM who had unprotected anal sex in the last six months (compared with no unprotected anal sex, aOR=2.51, 95%CI: 1.25-5.01) or did not receive HIV intervention services in the past year (compared with those who received HIV intervention services, aOR=3.89, 95%CI: 1.30-11.60), were syphilis positive (compared with syphilis negative, aOR=8.18, 95%CI: 2.98-22.48), used new-type drugs (compared with those who did not use new-type drugs, aOR=4.75, 95%CI: 2.32-9.70) had a higher risk of recent HIV infection. Conclusions: New-type drugs have been widely used in MSM in Shandong province. The abuse of new-type drugs increases the risk of recent HIV infection.
Collapse
Affiliation(s)
- L N Wang
- Department of Epidemiology, School of Public Health, Cheeloo College of Medicine, Shandong University, Ji'nan 250012, China
| | - K Yan
- Department of AIDS/STD Control and Prevention, Shandong Center for Disease Control and Prevention, Ji'nan 250014, China
| | - H Y Yu
- Department of AIDS/STD Control and Prevention, Shandong Center for Disease Control and Prevention, Ji'nan 250014, China
| | - P X Huang
- Department of AIDS/STD Control and Prevention, Shandong Center for Disease Control and Prevention, Ji'nan 250014, China
| | - G Y Wang
- Department of AIDS/STD Control and Prevention, Shandong Center for Disease Control and Prevention, Ji'nan 250014, China
| | - M Z Liao
- Department of AIDS/STD Control and Prevention, Shandong Center for Disease Control and Prevention, Ji'nan 250014, China
| | - Wei Ma
- Department of Epidemiology, School of Public Health, Cheeloo College of Medicine, Shandong University, Ji'nan 250012, China
| |
Collapse
|
7
|
del Angel Zuvirie C, van der Drift L, Yan K, Price L, Bange H. ePS6.03 Enabling RNA-based gene modification in high-throughput screenings using cystic fibrosis patient-derived organoids. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)00330-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
8
|
Yan K, Yuan ZH, Zheng Y, Wang J. Clinical outcomes in patients with infrapopliteal arterial occlusive disease treated by lower extremity bypass surgery: a comparison of atherosclerosis and thromboangiitis obliterans. Eur Rev Med Pharmacol Sci 2022; 26:4228-4237. [PMID: 35776021 DOI: 10.26355/eurrev_202206_29059] [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: 06/15/2023]
Abstract
OBJECTIVE Surgical bypasses are commonly utilized for the treatment of infrapopliteal arterial occlusive disease resulting from atherosclerosis (ASO) and thromboangiitis obliterans (TAO), especially when endovascular procedures fail. The aim of this study is to compare the in-hospital and follow-up outcomes of ASO and TAO patients treated with infrapopliteal bypass surgery. PATIENTS AND METHODS A total of 32 infrapopliteal bypasses were analyzed in 18 TAO patients and 14 ASO patients. Preoperative and postoperative arterial Doppler ultrasonography was performed in all patients. The ankle-brachial index (ABI) was calculated preoperatively and postoperatively in all cases. All patients were followed-up for at least one year and clinical outcomes were recorded. RESULTS Within 1-7 days postoperatively, 4 grafts in TAO patients occluded; nevertheless, 1 graft occlusion occurred in ASO patients. Patency rates at in-hospital were 77.8% and 92.9% in TAO and ASO patients, respectively. In 27 patients with successful infrapopliteal bypass, ABIs and crural peak arterial flow velocities significantly increased at 1-7 days postoperatively. During the period of follow-up, 6 graft occlusions occurred in TAO patients, and one ASO patient died of myocardial infarction. Patency rates at follow-up were 44.5% and 85.7% in TAO and ASO patients. For TAO patients with graft failure, ABIs at follow-up did not statistically differ from those postoperatively; however, they were significantly higher than those preoperatively. CONCLUSIONS Infrapopliteal bypass surgery is a feasible and effective procedure for ASO and TAO patients. Patency rates are lower in TAO than those in ASO during the in-hospital and follow-up period. However, TAO patients had the ischemic symptom relief and the improvement in ABI despite graft occlusion one year postoperatively.
Collapse
Affiliation(s)
- K Yan
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | | | | | | |
Collapse
|
9
|
Liu J, Yang Y, Yan K, Zhu C, Jiang M. [Development and validation of nomograms for predicting stroke recurrence after firstepisode ischemic stroke]. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42:130-136. [PMID: 35249880 DOI: 10.12122/j.issn.1673-4254.2022.01.16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE To explore the risk factors for recurrence in first-episode ischemic stroke survivors and establish a model for predicting stroke recurrence using a nomogram. METHODS We collected the data from a total of 821 first-episode ischemic stroke survivors admitted in the Department of Neurology, West China Hospital, Sichuan University from January, 2010 to December, 2018. R software was used for random sampling of the patients, and 70% of the patients were included in the training set to establish the prediction model and 30% were included in the validation set. Cox proportional risk regression model was used to analyze the factors affecting stroke recurrence, and R software rms package was used to construct the histogram and establish the visual prediction model. C-index and calibration curve were used to evaluate the performance of the model for predicting stroke occurrence. RESULTS Among the 821 survivors, the recurrence rate was 16.81% at 3 years and 19.98% at 5 years. Multivariate analysis of the training set by Cox regression model showed that an age over 65 years (HR= 2.596, P=0.024), an age of 45-64 years (HR=2.510, P=0.006), a mRS score beyond 3 (HR=2.284, P=0.004) and a history of coronary heart disease (HR=1.353, P=0.034) were all risk factors for stroke recurrence. The C-indexes of the nomogram for the 3-and 5-year relapse prediction model were 0.640 and 0.671, respectively. CONCLUSION Age, mRS score and peripheral vascular disease are the factors affecting stroke recurrence in first-episode ischemic stroke survivors, and the nomogram has a high discrimination and predictive power for predicting ischemic stroke recurrence.
Collapse
Affiliation(s)
- J Liu
- Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - Y Yang
- Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - K Yan
- Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - C Zhu
- Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - M Jiang
- Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| |
Collapse
|
10
|
Yang W, Zhang Y, Lu D, Huang T, Yan K, Wang W, Gao J. Ramelteon protects against human pulmonary microvascular endothelial cell injury induced by lipopolysaccharide (LPS) via activating nuclear factor erythroid 2-related factor 2 (Nrf2)/heme oxygenase-1 (HO-1) pathway. Bioengineered 2022; 13:1518-1529. [PMID: 34986734 PMCID: PMC8805948 DOI: 10.1080/21655979.2021.2021065] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Acute lung injury (ALI) is classified as a moderate or mild acute respiratory distress syndrome and is a prominent cause of morbidity and mortality among the critically ill population. Ramelteon is a melatonin receptor agonist with anti-inflammatory and antioxidant effects. The current study investigated the role of ramelteon in lipopolysaccharide (LPS)-induced human pulmonary microvascular endothelial cells (HPMECs) and its potential regulatory mechanisms. A CCK-8 assay was used to examine the effect of ramelteon on the viability of LPS-induced HPMECs, HPMECs treated with ML385 [a Nrf2 inhibitor] and HPMECs treated with SnPP [a HO-1 inhibitor]. The Nrf2/HO-1 signaling pathway was additionally assessed by performing Western blotting. The levels of oxidative stress and inflammatory cytokines in HPMECs were detected using kits and reverse transcription-quantitative PCR. Cell apoptosis was evaluated via TUNEL staining. Furthermore, cell permeability was assessed using a FITC-dextran fluorescent probe, ZO-1 and occludin expression was determined via Western blotting. The results demonstrated that ramelteon elevated HPMEC viability after LPS stimulation. Additionally, ramelteon markedly reduced LPS-induced oxidative stress, inflammation and apoptosis. Moreover, cell permeability was notably decreased in ramelteon-treated groups and was accompanied by upregulated ZO-1 and occludin expression. Ramelteon treatment also activated the Nrf2/HO-1 signaling pathway in LPS-induced HPMECs. Furthermore, the addition of ML385 or SnPP reversed the protective effects of ramelteon on LPS-induced oxidative stress, inflammation, apoptosis and cell dysfunction in HPMECs. Collectively, the results suggested that ramelteon alleviated LPS-induced HPMEC damage by activating the Nrf2/HO-1 signaling pathway, making it an effective treatment for ALI.
Collapse
Affiliation(s)
- Wenjun Yang
- Department of Anesthesiology, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou City, Jiangsu Province, China
| | - Yang Zhang
- Department of Anesthesiology, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou City, Jiangsu Province, China
| | - Dahao Lu
- Department of Anesthesiology, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou City, Jiangsu Province, China
| | - Tianfeng Huang
- Department of Anesthesiology, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou City, Jiangsu Province, China
| | - Keshi Yan
- Department of Anesthesiology, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou City, Jiangsu Province, China
| | - Weiwei Wang
- Department of Anesthesiology, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou City, Jiangsu Province, China
| | - Ju Gao
- Department of Anesthesiology, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou City, Jiangsu Province, China
| |
Collapse
|
11
|
Zhu Z, Ho T, Jin D, Yan K, Ye X, Guo D, Xiao J, Lu L, Hung T, Pai P, Tseng C. Deep Learning Based Lymph Node Gross Tumor Volume Detection via Distance-Guided Gating Using CT and 18F-FDG PET in Esophageal Cancer Radiotherapy. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
12
|
Zhang Y, Ding X, Meng Z, Chen M, Zheng X, Cai M, Wu J, Chang Y, Zhang Q, Jin L, Qian D, Li X, Wu M, Yan K, Lu Y, Zhang X. A Genome-wide association study identified HLA-C associated with the effectiveness of methotrexate for psoriasis treatment. J Eur Acad Dermatol Venereol 2021; 35:e898-e900. [PMID: 34310775 DOI: 10.1111/jdv.17544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 07/16/2021] [Indexed: 11/28/2022]
Affiliation(s)
- Y Zhang
- Institute of Dermatology and Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - X Ding
- Institute of Dermatology and Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Z Meng
- Institute of Dermatology and Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - M Chen
- Institute of Dermatology and Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - X Zheng
- Institute of Dermatology and Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - M Cai
- Institute of Dermatology and Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - J Wu
- Institute of Dermatology and Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Y Chang
- Institute of Dermatology and Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Q Zhang
- Institute of Dermatology and Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - L Jin
- Institute of Dermatology and Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - D Qian
- Institute of Dermatology and Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - X Li
- Institute of Dermatology and Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - M Wu
- Institute of Dermatology and Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, China
| | - K Yan
- Institute of Dermatology and Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Y Lu
- Institute of Dermatology and Department of Dermatology, Chengdu Second People's Hospital, Chengdu, China
| | - X Zhang
- Institute of Dermatology and Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, China.,Institute of Dermatology and Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
| |
Collapse
|
13
|
Jiang L, Wu Y, Zhang Y, Lu D, Yan K, Gao J. Effects of intraoperative lung-protective ventilation on clinical outcomes in patients with traumatic brain injury: a randomized controlled trial. BMC Anesthesiol 2021; 21:182. [PMID: 34182951 PMCID: PMC8236740 DOI: 10.1186/s12871-021-01402-w] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 06/15/2021] [Indexed: 11/11/2022] Open
Abstract
Background Secondary lung injury is the most common non-neurological complication after traumatic brain injury (TBI). Lung-protective ventilation (LPV) has been proven to improve perioperative oxygenation and lung compliance in some critical patients. This study aimed to investigate whether intraoperative LPV could improve respiratory function and prevent postoperative complications in emergency TBI patients. Methods Ninety TBI patients were randomly allocated to three groups (1:1:1): Group A, conventional mechanical ventilation [tidal volume (VT) 10 mL/kg only]; Group B, small VT (8 mL/kg) + positive end-expiratory pressure (PEEP) (5 cmH2O); and Group C, small VT (8 mL/kg) + PEEP (5 cmH2O) + recruitment maneuvers (RMs). The primary outcome was the incidence of total postoperative pulmonary complications; Secondary outcomes were intraoperative respiratory mechanics parameters and serum levels of brain injury markers, and the incidence of each postoperative pulmonary and neurological complication. Results Seventy-nine patients completed the final analysis. The intraoperative PaO2 and dynamic pulmonary compliance of Groups B and C were higher than those of Group A (P = 0.028; P = 0.005), while their airway peak pressure and plateau pressure were lower than those of group A (P = 0.004; P = 0.005). Compared to Group A, Groups B and C had decreased 30-day postoperative incidences of total pulmonary complications, hypoxemia, pulmonary infection, and atelectasis (84.0 % vs. 57.1 % vs. 53.8 %, P = 0.047; 52.0 % vs. 14.3 % vs. 19.2 %, P = 0.005; 84.0 % vs. 50.0 % vs. 42.3 %, P = 0.006; 24.0 % vs. 3.6 % vs. 0.0 %, P = 0.004). Moreover, intraoperative hypotension was more frequent in Group C than in Groups A and B (P = 0.007). At the end of surgery, the serum levels of glial fibrillary acidic protein and ubiquitin carboxyl-terminal hydrolase isozyme L1 in Group B were lower than those in Groups A and C (P = 0.002; P < 0.001). The postoperative incidences of neurological complications among the three groups were comparable. Conclusions Continuous intraoperative administration of small VT + PEEP is beneficial to TBI patients. Additional RMs can be performed with caution to prevent disturbances in the stability of cerebral hemodynamics. Trial registration Chinese Clinical Trial Registry (ChiCTR2000038314), retrospectively registered on September 17, 2020.
Collapse
Affiliation(s)
- Lulu Jiang
- Department of Anesthesiology, the Second Xiangya Hospital, Central South University, 139# Renmin Central Road, 410011, Changsha, China.,Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, 98# Nantong West Road, 225001, Yangzhou, China
| | - Yujuan Wu
- Department of Anesthesiology, Xiangtan Central Hospital, 120# Heping Road, 411100, Xiangtan, China
| | - Yang Zhang
- Department of Anesthesiology, the Second Xiangya Hospital, Central South University, 139# Renmin Central Road, 410011, Changsha, China.,Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, 98# Nantong West Road, 225001, Yangzhou, China
| | - Dahao Lu
- Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, 98# Nantong West Road, 225001, Yangzhou, China
| | - Keshi Yan
- Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, 98# Nantong West Road, 225001, Yangzhou, China
| | - Ju Gao
- Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, 98# Nantong West Road, 225001, Yangzhou, China.
| |
Collapse
|
14
|
Jiang L, Zhang Y, Lu D, Huang T, Yan K, Yang W, Gao J. Mechanosensitive Piezo1 channel activation promotes ventilator-induced lung injury via disruption of endothelial junctions in ARDS rats. Biochem Biophys Res Commun 2021; 556:79-86. [PMID: 33839418 DOI: 10.1016/j.bbrc.2021.03.163] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Accepted: 03/29/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVE This study aimed to investigate the role of endothelial Piezo1 in mediating ventilator-induced lung injury secondary to acute respiratory distress syndrome (ARDS). METHODS Rats and lung endothelial cells (ECs) were transfected with Piezo1 shRNA (shPiezo1) and Piezo1 siRNA, respectively, to knock down Piezo1. Intratracheal instillation or incubation with lipopolysaccharide (LPS) was used to establish an ARDS model, and high tidal volume (HVT) ventilation or 20% cyclic stretch (CS) was administered to simulate a two-hit injury. Lung injury, alterations in lung endothelial barrier, disruption of adherens junctions (AJs), and Ca2+ influx were assessed. RESULTS Lung vascular hyperpermeability was further increased in ARDS rats following HVT ventilation, which was abrogated in shPiezo1-treated rats. 20% CS led to severer rupture of AJs following LPS stimulation as indicated by immunofluorescence staining. The internalization and degradation of VE-cadherin were blocked by knockdown of Piezo1. Additionally, 20% CS induced Piezo1 activation, manifesting as elevated intracellular Ca2+ concentration in LPS-treated ECs, and subsequently increased calcium-dependent calpain activity. Pharmacological inhibition of calpain or Piezo1 knockdown prevented the loss of VE-cadherin, p120-catenin, and β-catenin in ARDS rats undergoing HVT ventilation and LPS-treated ECs exposed to 20% CS. CONCLUSION Excessive mechanical stretch during ARDS induces the activation of Piezo1 channel and its downstream target, calpain, via Ca2+ influx. This results in the disassembly of endothelial AJs and further facilitates lung endothelial barrier breakdown and vascular hyperpermeability.
Collapse
Affiliation(s)
- Lulu Jiang
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, 410011, China
| | - Yang Zhang
- Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, Yangzhou, 225001, China
| | - Dahao Lu
- Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, Yangzhou, 225001, China
| | - Tianfeng Huang
- Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, Yangzhou, 225001, China
| | - Keshi Yan
- Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, Yangzhou, 225001, China
| | - Wenjun Yang
- Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, Yangzhou, 225001, China
| | - Ju Gao
- Department of Anesthesiology, Northern Jiangsu People's Hospital, Clinical Medical School, Yangzhou University, Yangzhou, 225001, China.
| |
Collapse
|
15
|
Brüser R, Dlapa C, Henn JM, Yan K. Full Angle Dependence of the Four-Loop Cusp Anomalous Dimension in QED. Phys Rev Lett 2021; 126:021601. [PMID: 33512221 DOI: 10.1103/physrevlett.126.021601] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/06/2020] [Accepted: 12/14/2020] [Indexed: 06/12/2023]
Abstract
The angle-dependent cusp anomalous dimension governs divergences coming from soft gluon exchanges between heavy particles, such as top quarks. We focus on the matter-dependent contributions and compute the first truly nonplanar terms. They appear at four loops and are proportional to a quartic Casimir operator in color space. Specializing our general gauge theory result to U(1), we obtain the full QED four-loop angle-dependent cusp anomalous dimension. While more complicated functions appear at intermediate steps, the analytic answer depends only on multiple polylogarithms with singularities at fourth roots of unity. It can be written in terms of four rational structures and contains functions of up to maximal transcendental weight seven. Despite this complexity, we find that numerically the answer is tantalizingly close to the appropriately rescaled one-loop formula, over most of the kinematic range. We take several limits of our analytic result, which serves as a check and allows us to obtain new, power-suppressed terms. In the antiparallel lines limit, which corresponds to production of two massive particles at threshold, we find that the subleading power correction vanishes. Finally, we compute the quartic Casimir contribution for scalars in the loop. Taking into account a supersymmetric decomposition, we derive the first nonplanar corrections to the quark antiquark potential in maximally supersymmetric gauge theory.
Collapse
Affiliation(s)
- R Brüser
- Theoretische Physik 1, Naturwissenschaftlich-Technische Fakultät, Universität Siegen, 57068 Siegen, Germany
| | - C Dlapa
- Max-Planck-Institut für Physik, Werner-Heisenberg-Institut, 80805 München, Germany
| | - J M Henn
- Max-Planck-Institut für Physik, Werner-Heisenberg-Institut, 80805 München, Germany
| | - K Yan
- Max-Planck-Institut für Physik, Werner-Heisenberg-Institut, 80805 München, Germany
| |
Collapse
|
16
|
Zhu SC, Li QF, Zhang XY, Deng WZ, Song CY, Wang X, Yan K. [Clinical outcomes of different irradiation ranges in definitive intensity-modulated radiotherapy for esophageal cancer]. Zhonghua Zhong Liu Za Zhi 2020; 42:1040-1047. [PMID: 33342161 DOI: 10.3760/cma.j.cn112152-20191225-00842] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the therapeutic efficacy and safety of elective nodal irradiation (ENI) and involved field irradiation (IFI) in intensity-modulated radiotherapy for esophageal cancer, screen the patients suitable to undergo ENI radiotherapy and provide evidences for individual treatment of esophageal cancer. Methods: A retrospective analysis was performed on the clinical data of 924 patients with esophageal cancer who received definitive intensity-modulated radiotherapy in our hospital from January 2006 to December 2015. Among them, 272 patients received ENI and the other 652 patients received IFI. The clinicopathologic characteristics of 272 cases in ENI group and 652 cases in IFI group, who were recruited according to the balance of propensity score matching method, were compared. The Kaplan-Meier method was used to calculate 1-year, 3-years and 5-years local-regional failure-free survival (LRFFS), progression-free survival (PFS) and overall survival (OS) rates. The univariate and multivariate analysis of prognostic factors were also determined by Cox proportional hazard model and Long-rank test. Results: The clinicopathologic characteristics of these two group were not significantly different (P>0.05). The median follow-up time was 85.9 months and the follow-up rate was 95.9%. The 1-year, 3-years, 5-years PFS rates of the ENI groups were 65.3%, 31.7%, 18.4%, respectively, higher than 54.0%, 20.9%, 12.7% of the IFI group (P=0.001). The 1-year, 3-years, 5-years OS rates of the ENI groups were 79.0%, 43.7%, 24.9%, respectively, higher than 75.0%, 31.8%, 17.2% of the IFI group (P=0.003). In multivariate analysis, the sex, tumor volume, N stage and radiation field were independent factors for PFS and OS (P<0.05). Subgroup analysis showed that patients with male, age≤66 year, cervical and upper-thoracic location, tumor length≤6 cm, T1-2 stage, N0-1 stage, Ⅰ-Ⅱ stage, tumor volume≤50 cm(3), dosage>60 Gy and≤2 cycles of chemotherapy in the ENI group had a better survival rate than those in the IFI group (P<0.05). The total failure rate, local-regional failure rate in ENI group were significantly lower than those of IFI group (P=0.001, P=0.004). The incidence of bone marrow depression≥ grade 2 and 3 in ENI group was higher than that of the IFI group (P<0.05). However, the incidences of radioactive esophagitis≥ grade 3, radioactive pneumonia and late adverse reactions were not significantly different between these two groups (P>0.05). Conclusion: Compared with IFI, ENI can significantly improve the long-term survival for young, early TN stage and cervical/upper-thoracic esophageal cancer patients underwent chemotherapy.
Collapse
Affiliation(s)
- S C Zhu
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - Q F Li
- Department of Oncology, Hebei General Hospital, Shijiazhuang 050011, China
| | - X Y Zhang
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - W Z Deng
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - C Y Song
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - X Wang
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - K Yan
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| |
Collapse
|
17
|
Goverse G, Beztsinna N, Visser B, Spanjaard E, Yan K, Price L, Daszkiewicz L. Visualization and quantification of anti-tumor immune responses in 3D cultures. Eur J Cancer 2020. [DOI: 10.1016/s0959-8049(20)31245-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
18
|
Beztsinna N, Grillet F, Jariani A, Overkamp J, van der Meer D, Daszkiewicz L, Yan K, Vader W, Price L. ‘In vitro clinical trials’ platform for drug testing in patient-derived ex vivo 3D cultured human tumor tissues. Eur J Cancer 2020. [DOI: 10.1016/s0959-8049(20)31235-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
19
|
Chen M, Chen W, Liu P, Yan K, Lv C, Zhang M, Lu Y, Qin Q, Kuang Y, Zhu W, Chen X. The impacts of gene polymorphisms on methotrexate in Chinese psoriatic patients. J Eur Acad Dermatol Venereol 2020; 34:2059-2065. [PMID: 32271961 DOI: 10.1111/jdv.16440] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 03/24/2020] [Indexed: 01/05/2023]
Abstract
BACKGROUND Methotrexate (MTX) is the first-line treatment for psoriasis in China. The metabolic processes of MTX include various proteins and genes. Previous studies have shown that gene polymorphisms had significant impacts on the efficacy of MTX. However, the influence of gene polymorphisms has not been reported in the Chinese psoriatic patients. OBJECTIVE The aim of this study was to verify the impacts of candidate genes polymorphisms on the effectiveness of MTX in a Chinese psoriatic population. METHODS In this study, we enrolled 259 psoriasis patients from two clinical centres. Each of them received MTX treatment at 7.5-15 mg/week for at least 8 weeks. Patients were stratified as responders and non-responders according to whether the Psoriasis Area and Severity Index score declined more than 75% (PASI75). According to previous reports, 16 single nucleotide polymorphisms (SNPs) were selected and genotyped for each patient using the Sequenom platform. Fisher's exact test, the chi-square test, Mann-Whitney tests and ANOVA analyses were used for statistical analysis. RESULTS Among 259 patients, there were 182 males and 77 females, 63 patients with psoriatic arthritis and 196 patients without arthritis phenotype, and the age of all patients ranged from 19 to 70 years (49.7 ± 13.6). The baseline PASI value of patients was 13.8 ± 8.5, and 33.2% of patients achieved a PASI75 response after MTX treatment. Patients carrying the ATP-binding cassette subfamily B member 1 gene (ABCB1) rs1045642 TT genotype were associated with more severe psoriasis skin lesion (P = 0.032). Furthermore, the ABCB1 rs1045642 TT genotype was found to be more frequent in non-responders (P = 0.017), especially in moderate-to-severe patients (P = 0.002) and patients without psoriatic arthritis (P = 0.026) after MTX treatment. CONCLUSION We have demonstrated for the first time that polymorphism of the ABCB1 rs1045642 TT genotype is predictive of a worse clinical response of skin lesions to MTX therapy in a Chinese psoriatic population.
Collapse
Affiliation(s)
- M Chen
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China.,Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China.,Department of Dermatology, Hua Shan Hospital, Fu dan University, Shanghai, China
| | - W Chen
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China.,Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China.,Department of Dermatology, Hua Shan Hospital, Fu dan University, Shanghai, China
| | - P Liu
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China.,Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China.,Department of Dermatology, Hua Shan Hospital, Fu dan University, Shanghai, China
| | - K Yan
- Department of Dermatology, Dalian Dermatosis Hospital, Dalian, Liaoning, China
| | - C Lv
- Gerontology Center of Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - M Zhang
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China.,Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China.,Department of Dermatology, Hua Shan Hospital, Fu dan University, Shanghai, China
| | - Y Lu
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China.,Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China.,Department of Dermatology, Hua Shan Hospital, Fu dan University, Shanghai, China
| | - Q Qin
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China.,Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China.,Department of Dermatology, Hua Shan Hospital, Fu dan University, Shanghai, China
| | - Y Kuang
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China.,Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China.,Department of Dermatology, Hua Shan Hospital, Fu dan University, Shanghai, China
| | - W Zhu
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China.,Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China.,Department of Dermatology, Hua Shan Hospital, Fu dan University, Shanghai, China
| | - X Chen
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China.,Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China.,Department of Dermatology, Hua Shan Hospital, Fu dan University, Shanghai, China
| |
Collapse
|
20
|
Wang Q, Hu X, Du M, Lu Z, Yan K, Zhao D, Jiang N, Peng Y, He X, Yin L. ZNRD1-AS1 Promotes Nasopharyngeal Carcinoma Cell Invasion and Metastasis by Regulating the miR-335-ROCK1 Axis. Onco Targets Ther 2020; 13:4779-4790. [PMID: 32547105 PMCID: PMC7263878 DOI: 10.2147/ott.s250028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 05/11/2020] [Indexed: 12/13/2022] Open
Abstract
Background Long noncoding RNAs (lncRNAs) are known as key regulators in many cancer types, but their biological functions in nasopharyngeal carcinoma (NPC) remain largely unknown. In the present study, we aim to explore the role of the lncRNA ZNRD1-AS1 in NPC tumor development. Methods The role of ZNRD1-AS1 in NPC tissues and cells was explored by using quantitative real-time PCR assay. Cellular behavioral experiments were used in testing NPC cell proliferation, invasion, and migration. Luciferase reporter assay, RNA-binding protein immunoprecipitation, and Western blot analysis were used in estimating the associations among ZNRD1-AS1, miR-335, and ROCK1. Results ZNRD1-AS1 expression was elevated in the NPC tissues and cells, and ZNRD1-AS1 overexpression was positively correlated with advanced TNM stage and the presence of lymph node metastasis. Our biological experiments indicated that ZNRD1-AS1 knockdown reduces NPC cell invasion and metastasis. Further analyses revealed that ZNRD1-AS1 as a ceRNA promotes the migration and invasion of NPC cells by sponging miR-335. We provided evidence that ZNRD1-AS1 facilitates the invasion and metastasis of NPC cells via the miR-335–ROCK1 axis. Conclusion Our data shed light on the oncogenic role of ZNRD1-AS1 in NPC tumor development, and a promising therapeutic target for NPC was identified.
Collapse
Affiliation(s)
- Qiang Wang
- The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, Jiangsu, People's Republic of China.,Department of Radiation Oncology, Xuzhou Cancer Hospital, Xuzhou, Jiangsu, People's Republic of China
| | - Xinyu Hu
- The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, Jiangsu, People's Republic of China
| | - Mingyu Du
- The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, Jiangsu, People's Republic of China
| | - Zhiwei Lu
- Department of Radiation Oncology, Xuzhou Cancer Hospital, Xuzhou, Jiangsu, People's Republic of China
| | - Keshi Yan
- Department of Anesthesiology, Clinical Medical School of Yangzhou University, Subei People's Hospital of Jiangsu Province, Yangzhou, People's Republic of China
| | - Dingliang Zhao
- Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, People's Republic of China
| | - Ning Jiang
- The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, Jiangsu, People's Republic of China
| | - Yi Peng
- The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, Jiangsu, People's Republic of China
| | - Xia He
- The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, Jiangsu, People's Republic of China
| | - Li Yin
- The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, Jiangsu, People's Republic of China
| |
Collapse
|
21
|
Cao M, Li Y, Gao Z, Yan K, Zhong XX, Liu B, Zhang RY. [Malignant mesothelioma of intestinal: report of a case]. Zhonghua Bing Li Xue Za Zhi 2019; 48:897-899. [PMID: 31775444 DOI: 10.3760/cma.j.issn.0529-5807.2019.11.015] [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)
- M Cao
- Department of Pathology, Yanzhou Area of Affiliated Hospital of Jining Medical College, Shandong Province, Yanzhou 272100, China
| | - Y Li
- Department of Pathology, Yanzhou Area of Affiliated Hospital of Jining Medical College, Shandong Province, Yanzhou 272100, China
| | - Z Gao
- Department of Pathology, Yanzhou Area of Affiliated Hospital of Jining Medical College, Shandong Province, Yanzhou 272100, China
| | - K Yan
- Department of Pathology, Yanzhou Area of Affiliated Hospital of Jining Medical College, Shandong Province, Yanzhou 272100, China
| | - X X Zhong
- Department of Pathology, Yanzhou Area of Affiliated Hospital of Jining Medical College, Shandong Province, Yanzhou 272100, China
| | - B Liu
- Department of Pathology, Yanzhou Area of Affiliated Hospital of Jining Medical College, Shandong Province, Yanzhou 272100, China
| | - R Y Zhang
- Department of Pathology, Affiliated Hospital of Jining Medical College, Shandong Province, Jining 272029, China
| |
Collapse
|
22
|
Peterson JA, Maroney SA, Zwifelhofer W, Wood JP, Yan K, Bercovitz RS, Woods RK, Mast AE. Heparin-protamine balance after neonatal cardiopulmonary bypass surgery. J Thromb Haemost 2018; 16:1973-1983. [PMID: 30016577 PMCID: PMC6173634 DOI: 10.1111/jth.14245] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 03/28/2018] [Indexed: 12/18/2022]
Abstract
Essentials Heparin-protamine balance (HPB) modulates bleeding after neonatal cardiopulmonary bypass (CPB). HPB was examined in 44 neonates undergoing CPB. Post-operative bleeding occurred in 36% and heparin rebound in 73%. Thrombin-initiated fibrin clot kinetic assay and partial thromboplastin time best assessed HPB. SUMMARY Background Neonates undergoing cardiopulmonary bypass (CPB) are at risk of excessive bleeding. Blood is anticoagulated with heparin during CPB. Heparin activity is reversed with protamine at the end of CPB. Paradoxically, protamine also inhibits blood coagulation when it is dosed in excess of heparin. Objectives To evaluate heparin-protamine balance in neonates undergoing CPB by using research and clinical assays, and to determine its association with postoperative bleeding. Patients/Methods Neonates undergoing CPB in the first 30 days of life were studied. Blood samples were obtained during and after surgery. Heparin-protamine balance was assessed with calibrated automated thrombography, thrombin-initiated fibrin clot kinetic assay (TFCK), activated partial thromboplastin time (APTT), anti-FXa activity, and thromboelastometry. Excessive postoperative bleeding was determined by measurement of chest tube output or the development of cardiac tamponade. Results and Conclusions Of 44 neonates enrolled, 16 (36%) had excessive postoperative bleeding. The TFCK value was increased. By heparin in neonatal blood samples, but was only minimally altered by excess protamine. Therefore, it reliably measured heparin in samples containing a wide range of heparin and protamine concentrations. The APTT most closely correlated with TFCK results, whereas anti-FXa and thromboelastometry assays were less correlative. The TFCK and APTT assay also consistently detected postoperative heparin rebound, providing an important continued role for these long-established coagulation tests in the management of postoperative bleeding in neonates requiring cardiac surgical repair. None of the coagulation tests predicted the neonates who experienced postoperative bleeding, reflecting the multifactorial causes of bleeding in this population.
Collapse
Affiliation(s)
- J A Peterson
- Blood Research Institute, Blood Center of Wisconsin, Milwaukee, WI, USA
| | - S A Maroney
- Blood Research Institute, Blood Center of Wisconsin, Milwaukee, WI, USA
| | - W Zwifelhofer
- Blood Research Institute, Blood Center of Wisconsin, Milwaukee, WI, USA
| | - J P Wood
- Blood Research Institute, Blood Center of Wisconsin, Milwaukee, WI, USA
| | - K Yan
- Departments of Pathology and Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA
| | - R S Bercovitz
- Departments of Pathology and Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA
| | - R K Woods
- HermaHeart Center, Division of Pediatric Cardiothoracic Surgery, Children's Hospital of Wisconsin, Milwaukee, WI, USA
- Department of Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - A E Mast
- Blood Research Institute, Blood Center of Wisconsin, Milwaukee, WI, USA
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI, USA
| |
Collapse
|
23
|
Yan K, Xu W, Huang Y, Zhang Z, Huang Q, Xin K, Ma Y, Han L. Methotrexate activated Tregs via the CD73/AMPK/mTOR pathway. Br J Dermatol 2018. [DOI: 10.1111/bjd.17165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
24
|
Yan K, Xu W, Huang Y, Zhang Z, Huang Q, Xin K, Ma Y, Han L. 甲氨蝶呤通过 CD73/AMPK/mTOR 通路激活 Treg. Br J Dermatol 2018. [DOI: 10.1111/bjd.17176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
25
|
Yan K, Xu W, Huang Y, Zhang Z, Huang Q, Xin KZ, Ma Y, Han L. Methotrexate restores the function of peripheral blood regulatory T cells in psoriasis vulgaris via the CD73/AMPK/mTOR pathway. Br J Dermatol 2018; 179:896-905. [PMID: 29572822 DOI: 10.1111/bjd.16560] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/08/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Methotrexate (MTX) is used to treat psoriasis, a chronic inflammatory skin disease. OBJECTIVES To investigate the molecular mechanism of MTX in the treatment of psoriasis. METHODS Regulatory T cells (Tregs) and effector T (Teff) cells were isolated from the blood of patients with psoriasis and healthy controls. The proliferation of Teff cells was detected by carboxyfluorescein succinimidyl ester assay. The interferon (IFN)-γ and interleukin (IL)-17 levels were analysed by enzyme-linked immunosorbent assay. The expression of CD73 and FoxP3 were determined by flow cytometry. The expression of proteins in the AMPK/mTOR pathway were detected by Western blot analysis. RESULTS The data suggested that patients with psoriasis have Tregs with decreased immune suppression function and reduced expression of CD73 compared with healthy controls. Moreover, MTX could significantly restore the immunosuppressive function of IL-17-secreting Tregs. This, in turn, inhibits aberrant proliferation of Teff cells in patients with psoriasis, reverses downregulation of CD73, upregulates phosphorylated AMPK and inhibits phosphorylated mTOR, and downregulates IL-17 and IFN-γ levels. CONCLUSIONS We speculate that MTX can restore the immunosuppressive function of Tregs through upregulating CD73, activating AMPK and inactivating the mTOR pathway. These findings may partly explain the mechanism by which MTX treats psoriasis.
Collapse
Affiliation(s)
- K Yan
- Department of Dermatology, Huashan Hospital, Shanghai, China
| | - W Xu
- State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Y Huang
- Department of Dermatology, Huashan Hospital, Shanghai, China
| | - Z Zhang
- Department of Dermatology, Huashan Hospital, Shanghai, China
| | - Q Huang
- Department of Dermatology, Huashan Hospital, Shanghai, China
| | - K Z Xin
- Johns Hopkins University School of Medicin, 733 N Broadway, Baltimore, 21205, MD, U.S.A
| | - Y Ma
- Department of Dermatology, Huashan Hospital, Shanghai, China
| | - L Han
- Department of Dermatology, Huashan Hospital, Shanghai, China
| |
Collapse
|
26
|
Goverse G, Daszkiewicz L, Madej M, Yan K, Tleis M, Price L. PO-374 A 3D image-based quantification of organoid-immune cell interactions in the presence of immuno-modulators. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.885] [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: 11/03/2022] Open
|
27
|
Price L, Basten S, Yan K, Giesemann T, Schueler J, Herpers B. PO-200 3D In vitro cultures of PDX-derived tumour for anti-cancer drug discovery. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|
28
|
Vader W, Brouwer T, Basten S, Sarasqueta AF, Overkamp J, Yan K, Price L, Morreau H, Bonsing B, Vahrmeijer A. PO-443 In vitro clinical trial for pancreatic cancer patients. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.954] [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: 11/03/2022] Open
|
29
|
Zhang X, Medranda D, Borowiec J, Yan K, Zhang J, Wang S, Boi FS. On the morphological, structural and electrochemical properties of entangled Cu-filled carbon nano-onions. RSC Adv 2018; 8:6870-6877. [PMID: 35540343 PMCID: PMC9078305 DOI: 10.1039/c7ra12626c] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 02/03/2018] [Indexed: 11/21/2022] Open
Abstract
We demonstrate an advanced CVS approach in which the synthesis of Cu-filled carbon nano-onions (CNOs) is achieved by direct sublimation and pyrolysis of a not previously used precursor, namely chloro(1,5-cyclooctadiene)copper(i) dimer.
Collapse
Affiliation(s)
- X. Zhang
- College of Physical Science and Technology
- Sichuan University
- Chengdu
- China
| | - D. Medranda
- College of Physical Science and Technology
- Sichuan University
- Chengdu
- China
| | - J. Borowiec
- College of Physical Science and Technology
- Sichuan University
- Chengdu
- China
| | - K. Yan
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- China
| | - J. Zhang
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- China
| | - S. Wang
- Analytical and Testing Centre
- Sichuan University
- Chengdu
- China
| | - F. S. Boi
- College of Physical Science and Technology
- Sichuan University
- Chengdu
- China
| |
Collapse
|
30
|
Medranda D, Borowiec J, Zhang X, Wang S, Yan K, Zhang J, He Y, Ivaturi S, Boi FS. Ferromagnetically filled carbon nano-onions: the key role of sulfur in dimensional, structural and electric control. R Soc Open Sci 2018; 5:170981. [PMID: 29410810 PMCID: PMC5792887 DOI: 10.1098/rsos.170981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 12/01/2017] [Indexed: 06/08/2023]
Abstract
A key challenge in the fabrication of ferromagnetically filled carbon nano-onions (CNOs) is the control of their thickness, dimensions and electric properties. Up to now literature works have mainly focused on the encapsulation of different types of ferromagnetic materials including α-Fe, Fe3C, Co, FeCo, FePd3 and others within CNOs. However, no report has yet shown a suitable method for controlling both the number of shells, diameter and electric properties of the produced CNOs. Here, we demonstrate an advanced chemical vapour deposition approach in which the use of small quantities of sulfur during the pyrolysis of ferrocene allows for the control of (i) the diameter of the CNOs, (ii) the number of shells and (iii) the electric properties. We demonstrate the morphological, structural, electric and magnetic properties of these new types of CNOs by using SEM, XRD, TEM, HRTEM, EIS and VSM techniques.
Collapse
Affiliation(s)
- D. Medranda
- College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China
| | - J. Borowiec
- College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China
| | - Xiao Zhang
- College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China
| | - S. Wang
- Analytical and Testing Centre, Sichuan University, Chengdu, People's Republic of China
| | - K. Yan
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - J. Zhang
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Y. He
- Analytical and Testing Centre, Sichuan University, Chengdu, People's Republic of China
| | - S. Ivaturi
- College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China
| | - F. S. Boi
- College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China
| |
Collapse
|
31
|
Cvetkovski B, Yan K, Kritikos V, Bosnic-Anticevich S. P55: TELL ME ABOUT YOUR HAY FEVER: A QUALITATIVE INVESTIGATION OF THE PATIENT PERSPECTIVES OF ALLERGIC RHINITIS. Intern Med J 2017. [DOI: 10.1111/imj.55_13578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- B Cvetkovski
- University of Sydney; Sydney Australia
- Woolcock Institute of Medical Research; Sydney Australia
| | - K Yan
- Royal Prince Alfred Hospital; Sydney Australia
| | - V Kritikos
- Woolcock Institute of Medical Research; Sydney Australia
- Royal Prince Alfred Hospital; Sydney Australia
| | - S Bosnic-Anticevich
- University of Sydney; Sydney Australia
- Woolcock Institute of Medical Research; Sydney Australia
- Central Sydney Local Area Health Network; Sydney Australia
| |
Collapse
|
32
|
Pang H, Ji J, Yan K, Leung C, Lam D. Malignant pleural mesothelioma: A systematic review of first-line chemotherapy and analysis of Hong Kong cohort. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx093.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
33
|
Parsons LN, Gheorghe G, Yan K, Simpson P, Jarzembowski JA. An Evidence-based Recommendation for a Standardized Approach to Detecting Metastatic Neuroblastoma in Staging Bone Marrow Biopsies. Pediatr Dev Pathol 2017; 20:38-43. [PMID: 28276294 DOI: 10.1177/1093526616686253] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Neuroblastoma is a common malignant tumor of childhood. Accurate bone marrow (BM) evaluation for metastatic tumor is essential; however, no standardized pathologic workup exists for staging BMs. We examined the diagnostic yield of various BM components and optimal core biopsy (CB) length as part of developing evidence-based recommendations for BM evaluation. After obtaining institutional review board approval, 160 BM biopsies from 50 neuroblastoma patients were retrospectively selected. Hematoxylin and eosin-stained CB and Wright-stained aspirates were scored as positive, negative, or indeterminate. Total/trabecular CB lengths were measured using cellSens software and a DP71 camera (Olympus). Of the 160 BMs, 72 were positive for tumor in any component. Of these, 33 (45.8%) were positive in a single portion of the specimen: 19 CBs and 14 aspirates. Compared with overall diagnosis, sensitivities were as follows: CB 76.3%; aspirate 67.1%; core/aspirate combined 94.7%. Diagnostic CBs had significantly longer trabecular length than nondiagnostic CBs (6.74 mm vs 4.03 mm, P = .006). Positive CBs had longer trabecular space than negative marrows (7.91 mm vs 6.25 mm, P = .002). Nearly 50% of our positive specimens showed diagnostic discordance among the various components examined. However, combining CB and aspirate examination improved sensitivity for tumor detection. We therefore recommend bilateral CBs (>1 cm each) and aspirates for the optimal evaluation of BM for metastatic neuroblastoma.
Collapse
Affiliation(s)
- L N Parsons
- 1 Department of Pathology, Medical College of Wisconsin, Wisconsin, USA
| | - G Gheorghe
- 1 Department of Pathology, Medical College of Wisconsin, Wisconsin, USA.,2 Children's Hospital of Wisconsin, Wisconsin, USA
| | - K Yan
- 3 Division of Quantitative Health Sciences, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - P Simpson
- 3 Division of Quantitative Health Sciences, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - J A Jarzembowski
- 1 Department of Pathology, Medical College of Wisconsin, Wisconsin, USA.,2 Children's Hospital of Wisconsin, Wisconsin, USA
| |
Collapse
|
34
|
Suzuki T, Miyake N, Tsurusaki Y, Okamoto N, Alkindy A, Inaba A, Sato M, Ito S, Muramatsu K, Kimura S, Ieda D, Saitoh S, Hiyane M, Suzumura H, Yagyu K, Shiraishi H, Nakajima M, Fueki N, Habata Y, Ueda Y, Komatsu Y, Yan K, Shimoda K, Shitara Y, Mizuno S, Ichinomiya K, Sameshima K, Tsuyusaki Y, Kurosawa K, Sakai Y, Haginoya K, Kobayashi Y, Yoshizawa C, Hisano M, Nakashima M, Saitsu H, Takeda S, Matsumoto N. Molecular genetic analysis of 30 families with Joubert syndrome. Clin Genet 2016; 90:526-535. [PMID: 27434533 DOI: 10.1111/cge.12836] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 06/27/2016] [Accepted: 07/14/2016] [Indexed: 02/02/2023]
Abstract
Joubert syndrome (JS) is rare recessive disorders characterized by the combination of hypoplasia/aplasia of the cerebellar vermis, thickened and elongated superior cerebellar peduncles, and a deep interpeduncular fossa which is defined by neuroimaging and is termed the 'molar tooth sign'. JS is genetically highly heterogeneous, with at least 29 disease genes being involved. To further understand the genetic causes of JS, we performed whole-exome sequencing in 24 newly recruited JS families. Together with six previously reported families, we identified causative mutations in 25 out of 30 (24 + 6) families (83.3%). We identified eight mutated genes in 27 (21 + 6) Japanese families, TMEM67 (7/27, 25.9%) and CEP290 (6/27, 22.2%) were the most commonly mutated. Interestingly, 9 of 12 CEP290 disease alleles were c.6012-12T>A (75.0%), an allele that has not been reported in non-Japanese populations. Therefore c.6012-12T>A is a common allele in the Japanese population. Importantly, one Japanese and one Omani families carried compound biallelic mutations in two distinct genes (TMEM67/RPGRIP1L and TMEM138/BBS1, respectively). BBS1 is the causative gene in Bardet-Biedl syndrome. These concomitant mutations led to severe and/or complex clinical features in the patients, suggesting combined effects of different mutant genes.
Collapse
Affiliation(s)
- T Suzuki
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Department of Obstetrics and Gynecology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - N Miyake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Y Tsurusaki
- Clinical Research Institute, Kanagawa Children's Medical Center, Yokohama, Japan
| | - N Okamoto
- Department of Medical Genetics, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan
| | - A Alkindy
- Department of Genetics, Sultan Qaboos University Hospital, Muscat, Oman
| | - A Inaba
- Yokohama City University Medical Center, Children's Medical Center, Yokohama, Japan
| | - M Sato
- Division of Nephrology and Rheumatology, National Center for Child Health and Development, Tokyo, Japan
| | - S Ito
- Department of Pediatrics, Graduate school of Medicine, Yokohama City University, Yokohama, Japan
| | - K Muramatsu
- Department of Pediatrics, Gunma University Graduate School of Medicine, Gunma, Japan
| | - S Kimura
- Kumamoto City Child Development Support Center, Kumamoto, Japan
| | - D Ieda
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - S Saitoh
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - M Hiyane
- Division of Child Neurology, Okinawa Prefectural Southern Medical Center & Children's Medical Center, Okinawa, Japan
| | - H Suzumura
- Department of Pediatrics, Dokkyo Medical University, Tochigi, Japan
| | - K Yagyu
- Department of Child and Adolescent Psychiatry, Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - H Shiraishi
- Department of Pediatrics, Hokkaido University Graduate School of Medicine, Hokkaido, Japan
| | - M Nakajima
- Department of Pediatrics, Hokkaido University Graduate School of Medicine, Hokkaido, Japan
| | - N Fueki
- Division of Rehabilitation, Nagano Children's Hospital, Nagano, Japan
| | - Y Habata
- Department of Pediatric Rehabilitation, Hokkaido Medical Center for Child Health and Rehabilitation, Hokkaido, Japan
| | - Y Ueda
- Nire-no-kai Children's Clinic, Hokkaido, Japan
| | - Y Komatsu
- Department of Pediatrics, Kyorin University School of Medicine, Tokyo, Japan
| | - K Yan
- Department of Pediatrics, Kyorin University School of Medicine, Tokyo, Japan
| | - K Shimoda
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Y Shitara
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - S Mizuno
- Department of Pediatrics, Central Hospital, Aichi Human Service Center, Aichi, Japan
| | - K Ichinomiya
- Department of Neonatology, Gunma Children's Medical Center, Gunma, Japan
| | - K Sameshima
- Division of Medical Genetics, Gunma Children's Medical Center, Gunma, Japan
| | - Y Tsuyusaki
- Division of Neurology, Clinical Research Institute, Kanagawa Children's Medical Center, Yokohama, Japan
| | - K Kurosawa
- Division of Medical Genetics, Clinical Research Institute, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Y Sakai
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - K Haginoya
- Department of Pediatric Neurology, Miyagi Children's Hospital, Sendai, Japan
| | - Y Kobayashi
- Department of Pediatrics, Gunma University Graduate School of Medicine, Gunma, Japan.,Academic Renal Unit, School of Clinical Science, University of Bristol, Bristol, UK
| | - C Yoshizawa
- Department of Pediatrics, Gunma University Graduate School of Medicine, Gunma, Japan
| | - M Hisano
- Department of Nephrology, Chiba Children's Hospital, Chiba, Japan
| | - M Nakashima
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - H Saitsu
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - S Takeda
- Department of Obstetrics and Gynecology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - N Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| |
Collapse
|
35
|
Able C, Zakikhani R, Yan K, Sha D, Chopra A. SU-F-T-491: Photon Beam Matching Analysis at Multiple Sites Up to Twelve Years Post Installation. Med Phys 2016. [DOI: 10.1118/1.4956676] [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: 11/07/2022] Open
|
36
|
Huh MS, Ivanochko D, Hashem LE, Curtin M, Delorme M, Goodall E, Yan K, Picketts DJ. Stalled replication forks within heterochromatin require ATRX for protection. Cell Death Dis 2016; 7:e2220. [PMID: 27171262 PMCID: PMC4917659 DOI: 10.1038/cddis.2016.121] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 04/04/2016] [Accepted: 04/08/2016] [Indexed: 01/04/2023]
Abstract
Expansive growth of neural progenitor cells (NPCs) is a prerequisite to the temporal waves of neuronal differentiation that generate the six-layered neocortex, while also placing a heavy burden on proteins that regulate chromatin packaging and genome integrity. This problem is further reflected by the growing number of developmental disorders caused by mutations in chromatin regulators. ATRX gene mutations cause a severe intellectual disability disorder (α-thalassemia mental retardation X-linked (ATRX) syndrome; OMIM no. 301040), characterized by microcephaly, urogenital abnormalities and α-thalassemia. Although the ATRX protein is required for the maintenance of repetitive DNA within heterochromatin, how this translates to disease pathogenesis remain poorly understood and was a focus of this study. We demonstrate that Atrx(FoxG1Cre) forebrain-specific conditional knockout mice display poly(ADP-ribose) polymerase-1 (Parp-1) hyperactivation during neurogenesis and generate fewer late-born Cux1- and Brn2-positive neurons that accounts for the reduced cortical size. Moreover, DNA damage, induced Parp-1 and Atm activation is elevated in progenitor cells and contributes to their increased level of cell death. ATRX-null HeLa cells are similarly sensitive to hydroxyurea-induced replication stress, accumulate DNA damage and proliferate poorly. Impaired BRCA1-RAD51 colocalization and PARP-1 hyperactivation indicated that stalled replication forks are not efficiently protected. DNA fiber assays confirmed that MRE11 degradation of stalled replication forks was rampant in the absence of ATRX or DAXX. Indeed, fork degradation in ATRX-null cells could be attenuated by treatment with the MRE11 inhibitor mirin, or exacerbated by inhibiting PARP-1 activity. Taken together, these results suggest that ATRX is required to limit replication stress during cellular proliferation, whereas upregulation of PARP-1 activity functions as a compensatory mechanism to protect stalled forks, limiting genomic damage, and facilitating late-born neuron production.
Collapse
Affiliation(s)
- M S Huh
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada
| | - D Ivanochko
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada.,Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - L E Hashem
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada.,Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - M Curtin
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada.,Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - M Delorme
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada.,Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - E Goodall
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada.,Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - K Yan
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada
| | - D J Picketts
- Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada.,Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada.,Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| |
Collapse
|
37
|
Fu JJ, Wang S, Guan RH, Yang W, Yan K, Chen MH. [Effect of thermo-sensitive Matrigel on minimization of thermal injury to the nearby structures in radiofrequency ablation of subcapsular hepatic tumors in a rat model]. Zhonghua Yi Xue Za Zhi 2016; 96:43-7. [PMID: 26792607 DOI: 10.3760/cma.j.issn.0376-2491.2016.01.010] [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 evaluate the effect and safety of using thermo-sensitive Matrigel as artificial ascites on minimizing thermal injury to the nearby structures in a rat model of radiofrequency (RF) ablation of the liver. METHODS In this research, the morphological characterization of Matrigel was observed at different temperatures in vitro. In vivo study was conducted by using 42 SD rats in Matrigel, Saline and control groups of 14 rats each. Artificial ascites with 10 ml of Matrigel or saline was produced under ultrasound guidance before RF in the experimental groups. Using a 0.7 cm exposed 17 G RF electrode for 5 minutes (90 ± 2) ℃, 41 hepatic ablations was performed abutting the diaphragm, abdominal wall and stomach. The 41 rats were sacrificed at 24 h, and necropsy was performed.Gross and histopathologic examinations were performed to compare the frequency and extent of thermal injury to the nearby organs.The animal status was followed up to achieve long term safety evaluation of Matrigel. RESULTS Matrigel was in liquid formation at 0-4 ℃, but was not moving in vials at temperature 37 ℃ in 1 min, presenting gel formation.In vivo experiment, the artificial fluid thickness of Matrigel in site was significant larger than that of saline group, especially at 5 min of ablation ((8.1 ± 1.1) mm vs (2.4 ± 0.8)mm, P<0.01). Thermal injury to the nearby structures was found in 12 of 13 cases in control group, 8 of 14 cases (P=0.037) in saline group, and 1 of 14 cases (P<0.01) in Matrigel group. The sizes of the ablation zone of the liver did not differ among the three groups. There was no difference in the incidence of operation related complications among the three groups. There was no significant difference in body weight and health related parameters between Matrigel and saline group during 60 days of follow up. CONCLUSIONS Using thermo-sensitive Matrigel as artificial ascites may be a safe and useful technique and help to further reduce the frequency and severity of collateral thermal injury to the nearby structures compare to conventional saline, during RF ablation of subcapsular hepatic tumors.
Collapse
Affiliation(s)
- J J Fu
- Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education), Department of Ultrasound, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | | | | | | | | | | |
Collapse
|
38
|
|
39
|
Yan K, Campbell L, Rashid A, Wu B, Pang D, Gurka M, Collins S, Unger K. Patient Specific Model Predictive of Gastrointestinal Toxicity Following Stereotactic Body Radiation Therapy (SBRT) for Pancreatic Cancer: Preliminary Factor Study. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.2076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
40
|
Zhu B, Yan K, Li L, Lin M, Zhang S, He Q, Zheng D, Yang H, Shao G. K63-linked ubiquitination of FANCG is required for its association with the Rap80-BRCA1 complex to modulate homologous recombination repair of DNA interstand crosslinks. Oncogene 2014; 34:2867-78. [PMID: 25132264 DOI: 10.1038/onc.2014.229] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 05/21/2014] [Accepted: 06/23/2014] [Indexed: 11/09/2022]
Abstract
DNA interstrand crosslinks (ICLs) are extremely deleterious lesions that are repaired by homologous recombination (HR) through coordination of Fanconi anemia (FA) proteins and breast cancer susceptibility gene 1 (BRCA1) product, but the exact role these proteins have remains unclear. Here we report that FANCG was modified by the addition of lysine63-linked polyubiquitin chains (K63Ub) in response to DNA damage. We show that FANCG K63Ub was dispensable for monoubiquitination of FANCD2, but was required for FANCG to interact with the Rap80-BRCA1 (receptor-associated protein 80-BRCA1) complex for subsequent modulation of HR repair of ICLs induced by mitomycin C. Mutation of three lysine residues within FANCG to arginine (K182, K258 and K347, 3KR) reduced FANCG K63Ub modification, as well as its interaction with the Rap80-BRCA1 complex, and therefore impeded HR repair. In addition, we demonstrated that K63Ub-modified FANCG was deubiquitinated by BRCC36 complex in vitro and in vivo. Inhibition of BRCC36 resulted in increased K63Ub modification of FANCG. Taken together, our results identify a new role of FANCG in HR repair of ICL through K63Ub-mediated interaction with the Rap80-BRCA1 complex.
Collapse
Affiliation(s)
- B Zhu
- 1] Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, China [2] Institute of Systems Biology, Peking University, Beijing, China
| | - K Yan
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - L Li
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - M Lin
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - S Zhang
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Q He
- Center of Medical and Health Analysis, Peking University, Beijing, China
| | - D Zheng
- School of Medicine, Shenzhen University, Shenzhen, Guangdong, China
| | - H Yang
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - G Shao
- 1] Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, China [2] Institute of Systems Biology, Peking University, Beijing, China
| |
Collapse
|
41
|
Fu B, Wang YK, Xu P, Yan K, Li M. Value of ecosystem hydropower service and its impact on the payment for ecosystem services. Sci Total Environ 2014; 472:338-46. [PMID: 24291631 DOI: 10.1016/j.scitotenv.2013.11.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [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: 09/02/2013] [Revised: 11/01/2013] [Accepted: 11/03/2013] [Indexed: 05/04/2023]
Abstract
Hydropower is an important service provided by ecosystems. We surveyed all the hydropower plants in the Zagunao River Basin, Southwest China. Then, we assessed the hydropower service by using the InVEST (The Integrated Value and Tradeoff of Ecosystem Service Tools) model. Finally, we discussed the impact on ecological compensation. The results showed that: 1) hydropower service value of ecosystems in the Zagunao River Basin is 216.29 Euro/hm(2) on the average, of which the high-value area with more than 475.65 Euro/hm(2) is about 750.37 km(2), accounting for 16.12% of the whole watershed, but it provides 53.47% of the whole watershed service value; 2) ecosystem is an ecological reservoir with a great regulation capacity. Dams cannot completely replace the reservoir water conservation function of ecosystems, and has high economic and environmental costs that must be paid as well. Compensation for water conservation services should become an important basis for ecological compensation of hydropower development. 3) In the current PES cases, the standard of compensation is generally low. Cascade development makes the value of upstream ecosystem services become more prominent, reflecting the differential rent value, and the value of ecosystem services should be based on the distribution of differentiated ecological compensation.
Collapse
Affiliation(s)
- B Fu
- Key Laboratory of Mountain Hazards and Earth Surface Process, The Chinese Academy of Sciences, Chengdu 610041, China; Institute of Mountain Hazards and Environment, The Chinese Academy of Sciences, Chengdu 610041, China.
| | - Y K Wang
- Key Laboratory of Mountain Hazards and Earth Surface Process, The Chinese Academy of Sciences, Chengdu 610041, China; Institute of Mountain Hazards and Environment, The Chinese Academy of Sciences, Chengdu 610041, China.
| | - P Xu
- Key Laboratory of Mountain Hazards and Earth Surface Process, The Chinese Academy of Sciences, Chengdu 610041, China; Institute of Mountain Hazards and Environment, The Chinese Academy of Sciences, Chengdu 610041, China
| | - K Yan
- Key Laboratory of Mountain Hazards and Earth Surface Process, The Chinese Academy of Sciences, Chengdu 610041, China; Institute of Mountain Hazards and Environment, The Chinese Academy of Sciences, Chengdu 610041, China
| | - M Li
- Institute of Mountain Hazards and Environment, The Chinese Academy of Sciences, Chengdu 610041, China; Chengdu University of Technology, Chengdu 610059, China
| |
Collapse
|
42
|
Abstract
MicroRNAs (miRNAs) are potent regulators of gene transcription and posttranscriptional processes. The majority of miRNAs are localized within intronic regions of protein-coding genes (host genes) and have diverse functions in regulating important cellular processes in animals. To date, few plant intronic miRNAs have been studied functionally. Here we report a comprehensive computational analysis to characterize intronic miRNAs in rice and Arabidopsis. RT-PCR analysis confirmed that the identified intronic miRNAs were derived from the real introns of host genes. Interestingly, 13 intronic miRNAs in rice and two in Arabidopsis were located within seven clusters, of which four polycistronic clusters contain miRNAs derived from different families, suggesting that these clustered intronic miRNAs might be involved in extremely complex regulation in rice. Length analysis of miRNA-carrying introns, promoter prediction and qRT-PCR analysis results indicated that intronic miRNAs are coexpressed with their host genes. Expression pattern analysis demonstrated that host genes had a very broad expression spectrum in different stages of development, suggesting the intronic miRNAs might play an important role in plant development. This comparative genomics analysis of intronic miRNAs in rice and Arabidopsis provides new insight into the functions and regulatory mechanisms of intronic miRNAs in monocots and dicots.
Collapse
Affiliation(s)
- G D Yang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | | | | | | | | | | |
Collapse
|
43
|
Yang C, Guo M, Liu H, Yan K, Xu YJ, Miao H, Fu Y. A multi-point laser Doppler vibrometer with fiber-based configuration. Rev Sci Instrum 2013; 84:121702. [PMID: 24387407 DOI: 10.1063/1.4845335] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Laser Doppler vibrometer (LDV) is a non-contact optical interferometric system to measure vibrations of structures and machines with a high precision. Normal LDV can only offer a single-point measurement. Scanning LDV is usually impractical to do measurement on transient events. In this paper, a fiber-based self-synchronized multi-point LDV is proposed. The multiple laser beams with different frequency shifts are generated from one laser source. The beams are projected onto a vibrating object, reflected and interfered with a common reference beam. The signal including vibration information of multiple spatial points is captured by one single-pixel photodetector. The optical system is mainly integrated by fiber components for flexibility in measurement. Two experiments are conducted to measure a steady-state simple harmonic vibration of a cantilever beam and a transient vibration of a beam clamped at both ends. In the first measurement, a numerical interpolation is applied to reconstruct the mode shape with increased number of data points. The vibration mode obtained is compared with that from FEM simulation. In transient vibration measurement, the first five resonant frequencies are obtained. The results show the new-reported fiber-based multipoint LDV can offer a vibration measurement on various spatial points simultaneously. With the flexibility of fiber configuration, it becomes more practical for dynamic structural evaluation in industrial areas.
Collapse
Affiliation(s)
- C Yang
- Temasek Laboratories and School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553
| | - M Guo
- Temasek Laboratories and School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553
| | - H Liu
- Temasek Laboratories and School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553
| | - K Yan
- Temasek Laboratories and School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553
| | - Y J Xu
- Temasek Laboratories and School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553
| | - H Miao
- Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China
| | - Y Fu
- Temasek Laboratories and School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553
| |
Collapse
|
44
|
Abstract
BACKGROUND The morbidity and mortality of hepatitis B virus- and hepatitis C virus-related complications are disproportionately higher in the culturally and linguistically diverse population (CALD) when compared with Australian-born individuals. AIM This project aims to elucidate the barriers faced by the CALD population in accessing viral hepatitis management. METHOD CALD outpatients attending a viral hepatitis clinic in a tertiary teaching hospital were invited to participate in interviews. Questions pertained to: reason for screening for viral hepatitis, barriers to healthcare, perceived community view of viral hepatitis, main source of information of viral hepatitis and suggestions to engage members of CALD to seek healthcare. RESULTS The total number of participants was 60. The two major countries of birth included China (40%) and Egypt (17%). In 40% of the cohort, viral hepatitis was identified through screening programmes. Importantly, 37% were diagnosed as a result of complications of hepatitis infection, presenting late in the stage of disease. Forty-five per cent of participants perceived language to be a chief barrier. twenty-two per cent reported cultural barriers to accessing healthcare. Of these, 53% reported fear of discrimination/stigma. The lack of knowledge of available treatments/options was stated as a major obstacle in 40%. The two prevailing recommendations were greater education and awareness (85%) and changes in the health system itself (11%). CONCLUSION Substantial hurdles identified by participants include cultural differences, language difficulties, cultural beliefs, stigma and misinformation. These data demonstrate the need for the greater dissemination of information in culturally and linguistically appropriate mediums to raise awareness about viral hepatitis, pathogenesis and available treatments.
Collapse
Affiliation(s)
- M Guirgis
- Gastroenterology and Hepatology Department, St George Hospital, Australia.
| | | | | | | | | |
Collapse
|
45
|
de Graauw M, Cao L, Winkel L, van Miltenburg MHAM, le Dévédec SE, Klop M, Yan K, Pont C, Rogkoti VM, Tijsma A, Chaudhuri A, Lalai R, Price L, Verbeek F, van de Water B. Annexin A2 depletion delays EGFR endocytic trafficking via cofilin activation and enhances EGFR signaling and metastasis formation. Oncogene 2013; 33:2610-9. [DOI: 10.1038/onc.2013.219] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 04/19/2013] [Accepted: 05/14/2013] [Indexed: 12/27/2022]
|
46
|
Yan K, Yu Y, Tinney E, Baraldi R, Liao L. Clinical study of a noninvasive multimodal sono-contrast induced spectroscopy system for breast cancer diagnosis. Med Phys 2013; 39:1571-8. [PMID: 22380389 DOI: 10.1118/1.3689811] [Citation(s) in RCA: 4] [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: 11/07/2022] Open
Abstract
PURPOSE To present a noninvasive multimodal sono-contrast induced spectroscopy (SCIS) system for breast cancer detection. METHODS An IRB approved clinical study was carried out to evaluate its diagnostic power. A total of 66 subjects were enrolled with informed consent. The study data were grouped into healthy breast tissue (26), histologically proven cancer (14), and benign mass (26). The diffuse reflectance optical intensity and low intensity focused ultrasound (LIFU) signals, as well as ultrasound images, were collected during each study. The ratio of optical intensities at wavelengths 685 and 830 nm was analyzed using wavelet technique to compare the LIFU effects in cancer and noncancerous tissues. The ultrasound images were also processed to obtain tissue texture parameters, such as correlation, energy, contrast, homogeneity, etc. Backward stepwise regression method was performed to identify the statistically significant factors correlating to tissue types (cancer vs benign mass). RESULTS Comparison of the optical signals showed that LIFU induced transitory fluctuation in noncancerous tissue, but not in malignant tissue, as quantified by the ratio of mean absolute deviation (RMAD) of the high frequency component. Statistical analysis revealed that the RMAD ratios were significantly different in tumor vs noncancerous masses (p ≪ 0.01). For tissue texture parameters, energy and correlation were found to statistically correlate with the tissue types. A cancer characterization model was developed using the weighted factors to differentiate the tumor from the benign mass. Trade-off between sensitivity and specificity was obtained by varying the threshold value that estimated the upper-bound of the cancer output factor, from which the receiver-operating characteristic (ROC) curve was generated. The characterization model was optimized using ten modeling datasets and verified using another ten validation datasets randomly generated from the database. The optimization results show that an AUC of 0.93 can be achieved. With threshold 0.3, sensitivity of 96.0%, specificity of 84.1%, and negative predictive value (NPV) of 97.3% can be achieved. CONCLUSIONS The feasibility of the multimodal system in characterizing breast cancer vs benign mass is established.
Collapse
Affiliation(s)
- K Yan
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, PA 19107, USA.
| | | | | | | | | |
Collapse
|
47
|
Schmoelzer T, Liss KD, Rester M, Yan K, Stark A, Reid M, Peel M, Clemens H. Dynamic Recovery and Recrystallization during Hot-Working in an Advanced TiAl Alloy. ACTA ACUST UNITED AC 2013. [DOI: 10.3139/147.110140] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Intermetallic TiAl alloys are light-weight high-temperature materials and intended to partly replace Ni based alloys in jet engines. Due to difficult forming operations, component prices are high and limit the possible field of application. During hot-working, recovery and recrystallization effects determine the microstructural evolution and thereby the mechanical properties of the finished part as well as its behavior during deformation. To study the occurring phenomena, in-situ diffraction experiments with high-energy X-rays were conducted. By means of this method, the dominating processes were identified. The results were validated through electron back scatter diffraction experiments.
Collapse
Affiliation(s)
- T. Schmoelzer
- Department Physical Metallurgy and Materials Testing, Montanuniversität Leoben, Franz-Josef Straße 18, 8700 Leoben, Austria. E-mails: ,
| | - K.-D. Liss
- Australian Nuclear Science and Technology Organisation, PMB 2 Menai, NSW, Australia. E-mails: ,
| | - M. Rester
- Department Materials Physics, Montanuniversität Leoben, Franz-Josef Straße 18, 8700 Leoben, Austria. E-mail:
| | - K. Yan
- Australian Nuclear Science and Technology Organisation, PMB 2 Menai, NSW, Australia. E-mails: ,
| | - A. Stark
- HZG-Helmholtz Zentrum Geesthacht, Max-Planck Straße 1, 21502 Geesthacht, Germany. E-mail:
| | - M. Reid
- Faculty of Engineering, University of Wollongong, Faculty of Engineering, Northfields Avenue, NSW, 2522 Australia. E-mail:
| | - M. Peel
- European Synchrotron Radiation Facility, BP 220, 38043 Grenoble Cedex 9, France. E-mail:
| | - H. Clemens
- Department Physical Metallurgy and Materials Testing, Montanuniversität Leoben, Franz-Josef Straße 18, 8700 Leoben, Austria. E-mails: ,
| |
Collapse
|
48
|
|
49
|
Liu SP, Li XY, Li Z, He LN, Xiao Y, Yan K, Zhou ZG. Octanoylated Ghrelin Inhibits the Activation of the Palmitic Acid-Induced TLR4/NF-κB Signaling Pathway in THP-1 Macrophages. ISRN Endocrinol 2012; 2012:237613. [PMID: 23251812 PMCID: PMC3513732 DOI: 10.5402/2012/237613] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2012] [Accepted: 10/24/2012] [Indexed: 12/20/2022]
Abstract
To investigate the effect of acylated ghrelin on the activation of TLR4/NF-κB signaling pathway induced by palmitic acid in human monocyte-derived (THP-1) macrophages, THP-1 macrophages were cultured for 12 h by palmitic acid with various concentrations. The THP-1 macrophages was pretreated by acylated ghrelin at different doses for 4 h before cultivated by palmitic acid (200 μmol/L) for 12 h. We observed the level of TLR4, NF-κB p65 phosphorylation in THP-1 macrophages and TNF-α, IL-1β in culture supernatant. TLR4 mRNA was measured by real-time PCR. TLR4 protein and NF-κB p65 phosphorylation was measured by western blotting. The expression of TNF-α and IL-1β was detected by ELISA. Compared to the THP-1 macrophages without palmitic acid, the level of TLR4 mRNA protein and NF-κB p65 phosphorylation and the expression of TNF-α and IL-1β increased after treatment by palmitic acid in a dose-dependent fashion (P < 0.05). Compared to the THP-1 macrophages with palmitic acid (200 μmol/L), the level of the pervious substances decreased after preadministration by acylated ghrelin in a dose-dependent fashion. So, we make a conclusion that acylated ghrelin can regulate the activation of TLR4/NF-κB signaling pathway and inhibit the release of inflammatory cytokines in THP-1 macrophages which are stimulated by palmitic acid in a dose-dependent fashion.
Collapse
Affiliation(s)
- S P Liu
- Diabetes Center, 2nd Xiangya Hospital, Institute of Metabolism and Endocrinology, Key Laboratory of Diabetes Immunology of Ministry of Education, Central South University, 139 Renmin-Zhong Road, Hunan, Changsha 410011, China
| | | | | | | | | | | | | |
Collapse
|
50
|
Hara M, Yamagata K, Tomino Y, Saito A, Hirayama Y, Ogasawara S, Kurosawa H, Sekine S, Yan K. Urinary podocalyxin is an early marker for podocyte injury in patients with diabetes: establishment of a highly sensitive ELISA to detect urinary podocalyxin. Diabetologia 2012; 55:2913-9. [PMID: 22854890 PMCID: PMC3464371 DOI: 10.1007/s00125-012-2661-7] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 06/19/2012] [Indexed: 11/27/2022]
Abstract
AIMS/OBJECTIVE Nephropathy, a major complication of diabetes, is the leading cause of end-stage renal disease. Recent studies have demonstrated that podocyte injury is involved in the onset of and progression to renal insufficiency. Here, we describe a novel, highly sensitive ELISA for detecting urinary podocalyxin, a glycoconjugate on the podocyte apical surface that indicates podocyte injury, particularly in the early phase of diabetic nephropathy. METHODS Urine samples from patients with glomerular diseases (n = 142) and type 2 diabetes (n = 71) were used to quantify urinary podocalyxin by ELISA. Urine samples were obtained from 69 healthy controls for whom laboratory data were within normal values. Podocalyxin was detected in urine by immunofluorescence, immunoelectron microscopy and western blotting. RESULTS Morphologically, urinary podocalyxin was present as a vesicular structure; western blotting showed it as a positive band at 165-170 kDa. Levels of urinary podocalyxin were elevated in patients with various glomerular diseases and patients with diabetes. In patients with diabetes, urinary podocalyxin was higher than the cut-off value in 53.8% patients at the normoalbuminuric stage, 64.7% at the microalbuminuric stage and 66.7% at the macroalbuminuric stage. Positive correlations were observed between urinary podocalyxin levels and HbA(1c), urinary β(2) microglobulin, α(1) microglobulin and urinary N-acetyl-β-D-glucosaminidase, although urinary podocalyxin levels were not correlated with other laboratory markers such as blood pressure, lipid level, serum creatinine, estimated GFR or proteinuria. CONCLUSIONS/INTERPRETATION Urinary podocalyxin may be a useful biomarker for detecting early podocyte injury in patients with diabetes.
Collapse
Affiliation(s)
- M Hara
- Department of Pediatrics, Yoshida Hospital, Yoshida 32-14, Tsubame City, 959-0242 Niigata, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|