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Tan L, Chen X, Yan S, Guo A, Gao L, Zhou L, Zhou Y, Zeng J, Lu J. WTAP-Mediated N6-Methyladenosine of RNAs Facilitate the Pathophysiology of Atopic Dermatitis. J Invest Dermatol 2024; 144:1058-1070.e4. [PMID: 38029838 DOI: 10.1016/j.jid.2023.10.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 10/21/2023] [Accepted: 10/27/2023] [Indexed: 12/01/2023]
Abstract
N6-methyladenosine (m6A) is the most abundant dynamic and reversible internal chemical modification of RNA in eukaryotic cells and is essential in multiple pathophysiological processes. However, it has not been reported in atopic dermatitis (AD). We used Arraystar m6A-mRNA epitranscriptomic microarray to screen for differentially expressed genes and their m6A levels and m6A-related enzymes in patients with AD. We confirmed that the m6A RNA methyltransferase WTAP and 2 candidate differentially expressed genes (S100A9 and SERPINB3) were significantly upregulated in keratinocytes in public data and epidermal lesions of patients with AD. In vitro cell experiments confirmed that WTAP influenced the expression of the 2 candidate differentially expressed genes and promoted primary human epidermal keratinocyte proliferation while inhibiting human epidermal keratinocyte differentiation. Furthermore, we showed that WTAP, S100A9, and SERPINB3 expression correlated with AD severity. Our findings revealed that WTAP-mediated m6A modification promoted the expression of S100A9 and SERPINB3 to aggravate human epidermal keratinocyte proliferation and dysdifferentiation contributing to the pathophysiological development of AD.
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Affiliation(s)
- Lina Tan
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China; Medical Ozone Research Center, Central South University, Changsha, China
| | - Xue Chen
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China; Medical Ozone Research Center, Central South University, Changsha, China
| | - Siyu Yan
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China; Medical Ozone Research Center, Central South University, Changsha, China
| | - Aiyuan Guo
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China; Medical Ozone Research Center, Central South University, Changsha, China
| | - Lihua Gao
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China; Medical Ozone Research Center, Central South University, Changsha, China
| | - Lu Zhou
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China; Medical Ozone Research Center, Central South University, Changsha, China
| | - Yanping Zhou
- Department of Operating Room, Third Xiangya Hospital, Central South University, Changsha, China
| | - Jinrong Zeng
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China; Medical Ozone Research Center, Central South University, Changsha, China.
| | - Jianyun Lu
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China; Medical Ozone Research Center, Central South University, Changsha, China.
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Valle L, Guo A, Ahmed S, Rowe K, Pritchard C, Montgomery B, Garraway I, Nickols NG, Maxwell K, Kelley M, Rettig M. Success of Liquid Tumor Biopsy in Men with Metastatic Prostate Cancer According to Self-Identified Race. Int J Radiat Oncol Biol Phys 2023; 117:e446-e447. [PMID: 37785441 DOI: 10.1016/j.ijrobp.2023.06.1628] [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) Liquid biopsy using cell-free DNA (cfDNA) is increasingly used to identify somatic prostate cancer (PrCa) alterations when tissue biopsy of a metastatic lesion is infeasible or impractical. High-risk somatic alterations identified by cfDNA have been recently shown to predict the benefit of metastasis-directed therapy with stereotactic body radiation therapy in PrCa. However, given the older age of PrCa patients, liquid biopsy is often contaminated with alterations related to clonal hematopoiesis of indeterminate potential (CHIP), generating uncertainty in the clinical utility of the results. Given the higher incidence and aggressiveness of metastatic PrCa in Black men, we sought to determine if the success of cfDNA testing varied by race in a large and diverse cohort of United States Veterans with metastatic PrCa, hypothesizing that race would not influence the success of cfDNA testing. MATERIALS/METHODS Veterans with metastatic PrCa underwent next-generation sequencing of cfDNA biopsy specimens through the VA National Precision Oncology Program from February 2019 to November 2022. Successful identification of PrCa with cfDNA testing was defined as the identification of an alteration in one or more PrCa-related related genes in the gene panel tested (AR, CDK12, SPOP, MED12, CCND1, BRAF, AKT1, TMPRSS2, ERG, ETV1, and ETV4). Univariate logistic regression was employed to explore the association between patient self-identified race, as well as other patient and disease-specific factors at the time of cfDNA biopsy, with the likelihood of yielding a successful cfDNA biopsy result. RESULTS A total of 2066 cfDNA tests from 1985 Veterans were related to a diagnosis of PrCa, passed quality control measures, and were linkable to patient-level demographics. Median age at testing was 74, median PSA at testing was 22.7, median PSA doubling time (PSADT) was 3.6 months, and median Gleason score was 8. 57% of Veterans self-identified as White, 33% as Black, and 10% as Other. Eight hundred fourteen (39%) tests were deemed successful by finding a PrCa related gene alteration. Among successful tests, the most frequently encountered alterations were AR alterations in 60.4% White men and 33.9% Black men (p = 0.72), followed by TMPRSS2 alterations in 70.3% White men and 22.0% Black men (p<0.001). Despite a lower rate of PrCa-specific alterations in Black men, on univariate analysis, Veteran self-identified race was not associated with successful cfDNA testing (OR 0.95, 95% CI 0.78-1.14, p = 0.6), whereas PSA in quintiles 2-4, PSADT <12 months, and unit increase in Gleason score were associated with successful cfDNA testing (p<0.01 for all). CONCLUSION Successful cfDNA biopsy in metastatic PrCa is associated with PSA and PSADT, but not related to patient self-identified race. In appropriate clinical scenarios, patients who self-identify as Black or White are equally likely to have PrCa-specific alterations detected on cfDNA testing when evaluating metastatic PrCa patients for local and systemic therapies.
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Affiliation(s)
- L Valle
- Department of Radiation Oncology, University of California, Los Angeles, Los Angeles, CA
| | - A Guo
- Department of Veterans Affairs, Minneapolis, MN
| | - S Ahmed
- Northwestern University, Chicago, IL
| | - K Rowe
- Department of Veterans Affairs, Salt Lake City, UT
| | | | - B Montgomery
- University of Washington, Seattle, WA, United States
| | - I Garraway
- Department of Urology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - N G Nickols
- University of California Los Angeles, Department of Radiation Oncology, Los Angeles, CA
| | - K Maxwell
- University of Pennsylvania, Philadelphia, PA
| | | | - M Rettig
- Department of Medical Oncology, University of California, Los Angeles, Los Angeles, CA
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Yang Z, Wen P, Chen J, Kang J, Xiang Y, Ding S, Gao L, Tong X, Guo A. DNA methylation regulatory patterns and underlying pathways behind the co-pathogenesis of allergic rhinitis and chronic spontaneous urticaria. Front Immunol 2023; 13:1053558. [PMID: 36713372 PMCID: PMC9875140 DOI: 10.3389/fimmu.2022.1053558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 12/23/2022] [Indexed: 01/12/2023] Open
Abstract
Background Allergic rhinitis (AR) and chronic spontaneous urticaria (CSU) are often concurrent in patients. Changes in DNA methylation affect T cell biological processes, which may explain the occurrence and progression of comorbidity. However, downstream regulatory pathways of DNA methylation in two diseases and the underlying mechanisms have not been fully elucidated. Methods The GSE50101, GSE72541, GSE50222 and OEP002482 were mined for the identification of differentially expressed genes (DEGs) or co-expressed genes and differentially methylated genes (DMGs) in AR and CSU patients. We applied GO analysis and consensus clustering to study the potential functions and signal pathways of selected genes in two diseases. GSVA and logistic regression analysis were used to find the regulatory pathway between DNA methylation and activation patterns of CD4+ T cells. Besides, we used the Illumina 850k chip to detect DNA methylation expression profiles and recognize the differentially methylated CpG positions (DMPs) on corresponding genes. Finally, we annotated the biological process of these genes using GO and KEGG pathway analysis. Result The AR-related DEGs were found closely related to the differentiation and activation of CD4+ T cells. The DEGs or co-expressed genes of CD4+ T cells in AR and CSU patients were also clustered using GO and KEGG analysis and we got 57 co-regulatory pathways. Furthermore, logistic regression analysis showed that the regulation of cellular component size was closely related to the activation of CD4+ T cells regulated by DNA methylation. We got self-tested data using the Illumina 850k chip and identified 98 CpGs that were differentially methylated in patients. Finally, we mapped the DMPs to 15 genes and found that they were mainly enriched in the same CD4+T cell regulating pathway. Conclusion Our study indicated that DNA methylation affected by pollen participated in the activation patterns of CD4 + T cells, providing a novel direction for the symptomatic treatment of the co-occurrence of AR and CSU.
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Affiliation(s)
- Zijiang Yang
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China,Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Puqiao Wen
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China,Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Jing Chen
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jian Kang
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yaping Xiang
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Shu Ding
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lihua Gao
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaoliang Tong
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Aiyuan Guo
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China,*Correspondence: Aiyuan Guo,
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Zhu L, Zhou Y, Huang Y, Lei X, Guo H, Hu Y, Wu S, Lei L, Guo A. The impact of the COVID-19 pandemic on undergraduate and postgraduate students: A cross-sectional survey. Front Psychiatry 2023; 14:1074597. [PMID: 36816422 PMCID: PMC9935598 DOI: 10.3389/fpsyt.2023.1074597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 01/16/2023] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND The COVID-19 pandemic has impacted many facets of life. This study focuses on undergraduate and postgraduate students in China to explore how the pandemic has affected health status, daily life, learning situations, graduation-related situations, and their studies or work planning. METHODS This study sent online questionnaires to 2,395 participants to investigate the extent to which they were affected by the epidemic in the various aspects mentioned above and to understand what help they tend to get in the face of these effects. RESULTS A total of 2,000 valid questionnaires were collected. The physical health of 82.90% of the respondents was affected to varying degrees, with male students, non-medical students, and graduates being more affected than female students, students with medical majors, and non-graduates, respectively. The proportion of students affected by mental health, the total amount of physical exercise, emotional life, and interpersonal communication was 86.35, 88.65, 80.15, and 90.15%, respectively. Compared with medical students and non-graduates, non-medical students and graduates were more affected. In addition, students' learning and graduation conditions have also been affected to a certain extent: 13.07% of students may not be able to graduate on time, and the proportion of postgraduate students' graduations affected was higher than that of undergraduate students. CONCLUSION The COVID-19 pandemic has affected the health status of students, their daily lives, learning situations, and so on to varying degrees. We need to pay attention to the issues, provide practical solutions, and provide a basis for better responses to similar epidemics in the future.
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Affiliation(s)
- Lu Zhu
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Ying Zhou
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Yiyue Huang
- Department of Hepatobiliary Surgery, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, China
| | - Xinxin Lei
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Haoran Guo
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Yibo Hu
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Songjiang Wu
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Li Lei
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Aiyuan Guo
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, China
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Deng Z, Guo A, Wu C, Wang C. Proton pump inhibitors-related subacute cutaneous lupus erythematosus: Clinical characteristics, management, and outcome. J Cosmet Dermatol 2022; 21:7202-7208. [PMID: 36214602 DOI: 10.1111/jocd.15450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 08/23/2022] [Accepted: 10/06/2022] [Indexed: 01/06/2023]
Abstract
PURPOSE Previous knowledge about the association between proton pump inhibitors (PPIs) exposure and subacute cutaneous lupus erythematosus (SCLE) was mainly based on limited case reports or few review studies. We aim to evaluate the clinical characteristics, management, and outcome in patients with PPIs-induced SCLE. METHODS Case reports and case series from 2000 to December 31, 2021, on SCLE induced by PPIs were collected and retrospectively analyzed. RESULTS A total of 29 patients (6 male and 23 female) were included from 19 studies, the median age was 61 years (range 19-85), and 65.5% of patients were ≥60 years old. 37.9% of patients had the history of autoimmune diseases. The incubation period of PPIs intro to SCLE was 6 weeks for PPI-naive patients and 2 weeks for those re-administration of PPIs. The most common symptoms were annular and polycyclic erythematous (74.1%), rash or maculopapular (48.1%), and scaly plaques (40.7%). Trunk (69.2%), extremities (69.2%), face (26.9%), chest (26.9%), and back (26.9%) were common involved locations. Antinuclear antibodies, anti-Ro/SSA antibodies, and anti-La/SSB antibodies were positive in 24 patients (82.8%), 24 patients (82.8%), and 6 patients (20.7%), respectively. Direct immunofluorescence was positive in 50% of cases. Complete clinical remission (92.6%) was observed (median time: 4 weeks) with discontinuation of PPIs and treatment of oral corticosteroids (61.1%), hydroxychloroquine (44.4%), or topical steroids (16.7%). CONCLUSION PPIs-related SCLE is a rare adverse reaction based on clinical manifestations associated with immunological abnormalities and suggestive histological findings. PPIs should be suspected when considering possible culprits for drug-related SCLE.
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Affiliation(s)
- Zhenzhen Deng
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Aiyuan Guo
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Cuifang Wu
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Chunjiang Wang
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, China
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Guo A, Gu J, Yang J. Characteristics of lung metastasis in testicular cancer: A large-scale population analysis based on propensity score matching. Front Surg 2022; 9:959573. [DOI: 10.3389/fsurg.2022.959573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 09/30/2022] [Indexed: 11/06/2022] Open
Abstract
BackgroundThis study aims to systematically evaluate predictive factors for lung metastasis (LM) in patients with testicular cancer (TC) and to investigate cancer-specific survival (CSS) and overall survival (OS) of LM in TC patients based on a large population-cohort.MethodsA total of 10,414 patients diagnosed with TC during 2010–2015 were adopted from the Surveillance, Epidemiology, and End Results (SEER). After propensity score matching (PSM), 493 patients with LM were included for subsequent analysis. Univariate and multivariate logistic regression analyses were employed to identify risk factors, a nomogram was developed, and the receiver operating characteristic (ROC) curve was utilized to confirm the validation of the nomogram. Prognostic factors for OS and CSS among TC patients with LM were estimated via Cox proportional hazards models.ResultsPostmatching indicated that 11 parameters were successfully balanced between both groups (P > 0.05). After PSM, TC patients with LM presented an undesirable prognosis in both CSS and OS than those without LM (P < 0.001). The logistic regression model showed that tumor size; T stage; N stage; liver, brain, and bone metastases; and histology were positively associated with LM (P < 0.05). A nomogram was developed to predict diagnostic possibilities based on the independent risk variables, and the ROC curve verified the predictive capacity of the logistic regression model [area under the curve (AUC) = 0.910].ConclusionThe selected variates in the nomogram can be predictive criteria for TC patients with LM. Brain metastasis, liver metastasis, and larger tumor size were prognostic factors for CCS and OS among TC patients with LM.
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Guo A, Zhang J, Tian Y, Peng Y, Luo P, Zhang J, Liu Z, Wu W, Zhang H, Cheng Q. Identify the immune characteristics and immunotherapy value of CD93 in the pan-cancer based on the public data sets. Front Immunol 2022; 13:907182. [PMID: 36389798 PMCID: PMC9646793 DOI: 10.3389/fimmu.2022.907182] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 09/12/2022] [Indexed: 12/01/2022] Open
Abstract
CD93 is a transmembrane receptor that is mainly expressed on endothelial cells. A recent study found that upregulated CD93 in tumor vessels is essential for tumor angiogenesis in several cancers. However, the underlying mechanisms are largely unexplored. Our present research systematically analyzed the characteristics of CD93 in tumor immunotherapy among 33 cancers. CD93 levels and co-expression of CD93 on cancer and stromal cells were detected using public databases and multiple immunofluorescence staining. The Kaplan-Meier (KM) analysis identified the predictive role of CD93 in these cancer types. The survival differences between CD93 mutants and WT, CNV groups, and methylation were also investigated. The immune landscape of CD93 in the tumor microenvironment was analyzed using the SangerBox, TIMER 2.0, and single-cell sequencing. The immunotherapy value of CD93 was predicted through public databases. CD93 mRNA and protein levels differed significantly between cancer samples and adjacent control tissues in multiply cancer types. CD93 mRNA expression associated with patient prognosis in many cancers. The correlation of CD93 levels with mutational status of other gene in these cancers was also analyzed. CD93 levels significantly positively related to three scores (immune, stromal, and extimate), immune infiltrates, immune checkpoints, and neoantigen expression.. Additionally, single-cell sequencing revealed that CD93 is predominantly co-expressed on tumor and stromal cells, such as endothelial cells, cancer-associated fibroblasts (CAFs), neutrophils, T cells, macrophages, M1 and M2 macrophages. Several immune-related signaling pathways were enriched based on CD93 expression, including immune cells activation and migration, focal adhesion, leukocyte transendothelial migration, oxidative phosphorylation, and complement. Multiple immunofluorescence staining displayed the relationship between CD93 expression and CD8, CD68, and CD163 in these cancers. Finally, the treatment response of CD93 in many immunotherapy cohorts and sensitive small molecules was predicted from the public datasets. CD93 expression is closely associated with clinical prognosis and immune infiltrates in a variety of tumors. Targeting CD93-related signaling pathways in the tumor microenvironment may be a novel therapeutic strategy for tumor immunotherapy.
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Affiliation(s)
- Aiyuan Guo
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Jingwei Zhang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Yuqiu Tian
- Department of Infectious Disease, Zhuzhou Central Hospital, Zhuzhou, China
| | - Yun Peng
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
- Teaching and Research Section of Clinical Nursing, Xiangya Hospital of Central South University, Changsha, China
| | - Peng Luo
- Department of Oncology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Jian Zhang
- Department of Oncology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Zaoqu Liu
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wantao Wu
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Hao Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
- *Correspondence: Quan Cheng, ; Hao Zhang,
| | - Quan Cheng
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Clinical Diagnosis and Therapy Center for Glioma of Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Quan Cheng, ; Hao Zhang,
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Zhou G, Zhao MW, Cao YP, Lin JH, Wang WG, Guo A, Tian H. [A multicenter cross-sectional study of quality of life and nonsurgical treatment in patients with knee osteoarthritis]. Zhonghua Yi Xue Za Zhi 2022; 102:2799-2805. [PMID: 36124353 DOI: 10.3760/cma.j.cn112137-20220406-00719] [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: To explore the influencing factors of health-related quality of life (HRQoL) in patients with knee osteoarthritis, and to analyze the non-surgical treatment of knee osteoarthritis. Methods: Demographic variables, treatment modalities, imaging data, and 12-item short form health survey (SF-12) scores of patients with knee osteoarthritis in orthopedic outpatient departments of five hospitals in Beijing from December 2017 to November 2018 were collected to analyze influencing factors of HRQoL and non-surgical treatment. Results: A total of 2 034 patients were included. There were 530 males (26.1%) and 1 504 females (73.9%), with a mean age of (59.17±10.22) years. In terms of physical quality of life, female patients with knee osteoarthritis had lower physical components summary (PCS) compared with male patients (β=-0.521, P=0.036); patients aged ≥64 years had lower PCS than those aged<55 years (β=-0.636, P=0.026). Patients with an education of more than 12 years had higher PCS than those with less than 10 years (β=1.063, P<0.001). Compared to patients with mild clinical symptoms, the PCS of patients with moderate clinical symptoms was lower (β=-0.860, P=0.002), while the PCS of those with severe clinical symptoms was much lower (β=-1.126, P<0.001). Patients treated with combination therapy had higher PCS than untreated patients (β=0.731, P=0.005). In terms of mental quality of life, compared to patients engaged in sedentary work, the mental components summary (MCS) of patients engaged in mild manual labor jobs was lower (β=-0.712, P=0.015); Compared to patients with a Charson comorbidity index of 0, patients with a Charlson comorbidity index ≥ 2 had lower MCS (β=-1.183, P=0.007). In the past 12 months, 648 (31.9%), 143 (7.0%), 406 (20.0%), 680 (33.4%), 343 (16.9%), 681 (33.5%), 170 (8.4%) patients had used non-steroid anti-inflammatory drugs (NSAIDs), acetaminophen, glucosamine/chondroitin formulations, physical therapy, articular cavity puncture injection, traditional Chinese medicine treatment and exercise therapy, respectively. Total of 451 patients (22.2%) received monotherapy and 889 patients (43.7%) received combination therapy. Conclusions: The major non-surgical treatment methods for patients with knee osteoarthritis in Beijing are NSAIDs, physiotherapy and traditional Chinese medicine. Combination therapy is used more frequently than monotherapy. Physical quality of life is related to gender, age, education, severity of symptoms and treatment, while mental quality of life is related to occupational labor and comorbidities.
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Affiliation(s)
- G Zhou
- Department of orthopedics, Peking University Third Hospital, Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing 100191, China
| | - M W Zhao
- Department of orthopedics, Peking University Third Hospital, Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing 100191, China
| | - Y P Cao
- Department of Orthopedics, Peking University First Hospital, Beijing 100034, China
| | - J H Lin
- Department of Orthopedics, Peking University People's Hospital, Beijing 100044, China
| | - W G Wang
- Department of Orthopedics, China-Japan Friendship Hospital, Beijing 100029, China
| | - A Guo
- Department of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - H Tian
- Department of orthopedics, Peking University Third Hospital, Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing 100191, China
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Zhang X, Guo Y, Xiao T, Li J, Guo A, Lei L, Jin C, Long Q, Su J, Yin M, Liu H, Chen C, Zhou Z, Zhu S, Tao J, Hu S, Chen X, Peng C. CD147 mediates epidermal malignant transformation through the RSK2/AP-1 pathway. J Exp Clin Cancer Res 2022; 41:246. [PMID: 35964097 PMCID: PMC9375950 DOI: 10.1186/s13046-022-02427-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 07/01/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Malignant transformation of the epidermis is an essential process in the pathogenesis of cutaneous squamous-cell carcinoma (cSCC). Although evidence has demonstrated that CD147 plays key roles in various tumors, the role of CD147 in epidermal malignant transformation in vivo remains unclear.
Methods
Epidermal CD147-overexpression or knockout (EpiCD147-OE or EpiCD147-KO) transgenic mouse models were generated for in vivo study. RNA-sequencing and q-PCR were performed to identify the differentially expressed genes. Immunohistochemistry and flow cytometry were performed to investigate the role of CD147 in regulating myeloid-derived suppressor cells (MDSCs). Immunoprecipitation, EMSA and ChIP assays were performed to investigate the mechanism of CD147 in cell transformation.
Results
We found that specific overexpression of CD147 in the epidermis (EpiCD147-OE) induces spontaneous tumor formation; moreover, a set of chemokines and cytokines including CXCL1, which play essential function in MDSC recruitment, were significantly upregulated in EpiCD147-OE transgenic mice. As expected, overexpression of CD147 in the epidermis remarkably facilitated tumorigenesis by increasing the rate of tumor initiation and the number and size of tumors in the DMBA/TPA mouse model. Interestingly, the expression of CXCL1 and the infiltration of MDSCs were dramatically increased in EpiCD147-OE transgenic mice. Our findings also showed that knockdown of CD147 attenuated EGF-induced malignant transformation as well as CXCL1 expression in HaCaT cells. Consistently, CD147 was found overexpressed in cutaneous squamous cell carcinoma (cSCC), and positively related with the expression of CD33, a myeloid-associated marker. We further identified RSK2, a serine/threonine kinase, as an interacting partner of CD147 at the binding site of CD147D207-230. The interaction of CD147 and RSK2 activated RSK2, thus enhancing AP-1 transcriptional activation. Furthermore, EMSAs and ChIP assays showed that AP-1 could associate with the CXCL1 promoter. Importantly, RSK2 inhibitor suppressed the tumor growth in DMBA/TPA mouse model by inhibiting the recruitment of MDSCs.
Conclusion
Our findings demonstrate that CD147 exerts a key function in epidermal malignant transformation in vivo by activating keratinocytes and recruiting MDSCs via the RSK2/AP-1 pathway.
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Mason E, Mhaskar H, Guo A. A manifold learning approach for gesture recognition from micro-Doppler radar measurements. Neural Netw 2022; 152:353-369. [DOI: 10.1016/j.neunet.2022.04.024] [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] [Received: 10/04/2021] [Revised: 04/21/2022] [Accepted: 04/21/2022] [Indexed: 11/25/2022]
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11
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Zeng J, Liu L, Tong X, Gao L, Zhou L, Guo A, Tan L. Application of blended teaching model based on SPOC and TBL in dermatology and venereology. BMC Med Educ 2021; 21:606. [PMID: 34879860 PMCID: PMC8656105 DOI: 10.1186/s12909-021-03042-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 04/26/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND In this study, we applied the small private online course (SPOC) and team-based learning (TBL) blended teaching model to dermatology and venereology to ensure a higher quality learning experience for clinical medical students. METHODS A total of 52 fifth-grade clinical undergraduates from Xiangya School of Medicine of Central South University were randomly divided into an experimental (n = 26) and a control group (n = 26). In March 2018, we used the SPOC and TBL blended teaching model in the experimental group and explored the effects of innovative teaching in the dermatology and venereology course, compared with the control group receiving the conventional teaching method. We analyzed the two groups' theoretical assessment scores and questionnaire results to evaluate the efficiency of the new pedagogy. RESULTS Students in the experimental group had a better understanding than the control group of the dermatology and venereology content and higher scores on the case analysis questions in the final theoretical examination. The results revealed that the majority of the experimental group students agreed that the novel teaching model blended with SPOC&TBL helped them significantly stimulate motivation and develop their ability in self-directed learning, independent thinking, literature retrieval, presentation board, teamwork, communication, and systematic clinical thinking. The teaching satisfaction survey of the two groups showed that the students' satisfaction in the experimental group was significantly higher than in the control group (p < 0.05). CONCLUSIONS The SPOC&TBL teaching model is better than the traditional one in enriching students' professional knowledge and cultivating their comprehensive ability. It can effectively promote educational quality, improve students' learning effects, and enhance their satisfaction. This method has broad application prospects.
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Affiliation(s)
- Jinrong Zeng
- Department of Dermatology, Third Xiangya Hospital, Central South University, No.138 Tongzipo Rd, Yuelu District, Changsha, 410013, Hunan, China
| | - Liyao Liu
- Department of Dermatology, Third Xiangya Hospital, Central South University, No.138 Tongzipo Rd, Yuelu District, Changsha, 410013, Hunan, China
| | - Xiaoliang Tong
- Department of Dermatology, Third Xiangya Hospital, Central South University, No.138 Tongzipo Rd, Yuelu District, Changsha, 410013, Hunan, China
| | - Lihua Gao
- Department of Dermatology, Third Xiangya Hospital, Central South University, No.138 Tongzipo Rd, Yuelu District, Changsha, 410013, Hunan, China
| | - Lu Zhou
- Department of Dermatology, Third Xiangya Hospital, Central South University, No.138 Tongzipo Rd, Yuelu District, Changsha, 410013, Hunan, China
| | - Aiyuan Guo
- Department of Dermatology, Third Xiangya Hospital, Central South University, No.138 Tongzipo Rd, Yuelu District, Changsha, 410013, Hunan, China.
| | - Lina Tan
- Department of Dermatology, Third Xiangya Hospital, Central South University, No.138 Tongzipo Rd, Yuelu District, Changsha, 410013, Hunan, China.
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12
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Yang L, Chen J, Tong X, Gao L, Ding S, Guo A. Photodynamic therapy should be considered for the treatment of folliculitis decalvans. Photodiagnosis Photodyn Ther 2021; 35:102356. [PMID: 34048971 DOI: 10.1016/j.pdpdt.2021.102356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 04/22/2021] [Accepted: 05/21/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Different therapies such as clindamycin, rifampicin, isotretinoin, or corticosteroids have been used for folliculitis decalvans with poor results. Recently, PDT has been used for treating folliculitis decalvans more frequently. However, the efficacy of PDT for treating folliculitis decalvans is lacking consensus. In this study, we conducted a retrospective analysis to evaluated the status of PDT for the treatment of folliculitis decalvans. METHODS 13 cases of folliculitis decalvans patients were treated with ALA-PDT. The treatment totals 3 times, and the interval between each treatment was 10-14 days. A follow-up was conducted at 12 months after the last treatment. The condition was graded according to the following evaluation criteria: recovery, significant improvement, moderate improvement, ineffective. RESULTS A total of 7 cases improved significantly, and 6 cases improved moderately followed the first treatment. After the second treatment, 10 cases showed significant improvement, and 2 cases responded poorer than the first treatment. After the third treatment, 4 cases recovered, 7 cases improved significantly, and 2 case moderately improved. At the 12-months follow-up, 9 out of 13 patients were well controlled and with no recurrence. The other 4 patients relapsed. CONCLUSION In summary, photodynamic therapy shows overall favorable effect on folliculitis decalvans and should be considered as a method for the treatment of folliculitis decalvans.
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Affiliation(s)
- Lun Yang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Jing Chen
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Xiaoliang Tong
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Lihua Gao
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Shu Ding
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China
| | - Aiyuan Guo
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China.
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13
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Wang Q, Li D, Guo A, Li M, Li L, Zhou J, Mishra SK, Li G, Duan Y, Li Q. Whole-genome resequencing of Dulong Chicken reveal signatures of selection. Br Poult Sci 2020; 61:624-631. [PMID: 32627575 DOI: 10.1080/00071668.2020.1792832] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
1. Dulong Chickens (DLCs) live at high altitude (~3000 m) and humidity (~90%), are endemic to the Yunnan province, and have gradually developed unique physiological characteristics, but their genetic basis is still unclear. Using the fixation index (FST ) approach, based on whole-genome resequencing, DLCs were analysed to uncover the genomic architecture of the population and candidate genes involved in selection during domestication. 2. A total of 469 candidate genes were obtained to be putatively under selection in DLCs. Further investigations revealed the genic footprint for local adaptation (high-altitude and high-humidity) as the genic signatures that are involved in economic traits (related to egg production). 3. Candidate genes were identified that may be associated with disease resistance, aggressiveness, small body size and positive selection of vision in DLCs. 4. These data revealed loci of selective signals that operate during selection for production at high altitude and humidity.
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Affiliation(s)
- Q Wang
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China (Southwest Forestry University), Ministry of Education , Kunming, China.,Life Science College, Southwest Forestry University , Kunming, China
| | - D Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University , Chengdu, China
| | - A Guo
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China (Southwest Forestry University), Ministry of Education , Kunming, China.,Life Science College, Southwest Forestry University , Kunming, China
| | - M Li
- School of Mathematics and Computer Science, Yunnan Nationalities University , Kunming, China
| | - L Li
- Life Science College, Southwest Forestry University , Kunming, China
| | - J Zhou
- Life Science College, Southwest Forestry University , Kunming, China
| | - S K Mishra
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University , Chengdu, China
| | - G Li
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China (Southwest Forestry University), Ministry of Education , Kunming, China.,Life Science College, Southwest Forestry University , Kunming, China
| | - Y Duan
- Technology Center, China Tobacco Yunnan Industrial Co., Ltd ., Kunming, China
| | - Q Li
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China (Southwest Forestry University), Ministry of Education , Kunming, China.,Life Science College, Southwest Forestry University , Kunming, China.,Kunming Xianghao Technology Co. Ltd ., Kunming, China
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14
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Tang Z, Huang J, Lu J, Chen J, Guo A, Ding S. Application and challenge of reflectance confocal microscopy in the diagnosis of pigmented nevus. Skin Res Technol 2020; 26:690-695. [PMID: 32253772 DOI: 10.1111/srt.12854] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 03/02/2020] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To investigate the application and challenge of reflectance confocal microscopy (RCM) in the diagnosis of pigmented nevus. METHOD A total of 997 patients with clinical diagnosis of pigmented nevus were included in the study, and RCM imaging was performed on the lesion of each patient. A biopsy was performed in 78 of these patients for histological diagnosis. We retrospectively analyzed the results of RCM diagnosis and histological diagnosis and then found the RCM characteristics of the histologically confirmed lesion. RESULTS According to the RCM images, 823 of the 997 (82.55%) patients were diagnosed with pigmented nevus, while 113 (11.33%) were not diagnosed by dermatologists using RCM. Of the 78 biopsy lesions, 36 of the 46 (78.26%) cases diagnosed with pigmented nevus were consistent with histological diagnosis, while three were rediagnosed with dermatofibromas, four were seborrheic keratosis, one was malignant melanoma in situ, and two were lentigo. CONCLUSION RCM exhibits a high diagnostic accuracy for patients with clinical diagnosis of pigmented nevus. However, due to the limitation of RCM scanning depth and the commonality of the microscopic characteristics of related diseases, RCM still faces certain challenges in the diagnosis of pigmented nevus.
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Affiliation(s)
- Zhen Tang
- Department of Dermatology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Jian Huang
- Department of Dermatology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Jianyun Lu
- Department of Dermatology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Jing Chen
- Department of Dermatology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Aiyuan Guo
- Department of Dermatology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Shu Ding
- Department of Dermatology, The Third Xiangya Hospital of Central South University, Changsha, China
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15
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Derbala M, Guo A, Ferrall J, Dib P, Foraker R, Smith S. Recipients of Public Insurance Have Increased Mortality Post-LVAD. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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16
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Gao L, Dou J, Zhang B, Zeng J, Cheng Q, Lei L, Tan L, Zeng Q, Ding S, Guo A, Cheng H, Yang C, Luo Z, Lu J. Ozone therapy promotes the differentiation of basal keratinocytes via increasing Tp63-mediated transcription of KRT10 to improve psoriasis. J Cell Mol Med 2020; 24:4819-4829. [PMID: 32168425 PMCID: PMC7176851 DOI: 10.1111/jcmm.15160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 02/20/2020] [Accepted: 02/25/2020] [Indexed: 12/16/2022] Open
Abstract
Psoriasis is a chronic immune‐mediated inflammatory dermatosis. Recently, ozone therapy has been applicated to psoriasis treatment; however, the mechanism by which ozone therapy improves psoriasis remains unclear. The excessive proliferation and the differentiation of basal keratinocytes have been considered critical issues during pathological psoriasis process, in which keratin 6 (KRT6) and KRT10 might be involved. In the present study, KRT6, IL‐17 and IL‐22 protein within psoriasis lesions was decreased, while KRT10 and Tp63 protein in psoriasis lesions was increased by ozone treatment in both patient and IMQ mice psoriatic tissues. In the meantime, ozone treatment down‐regulated KRT6 mRNA and protein expression while up‐regulated KRT10 mRNA and protein expression within IL‐22 treated primary KCs; the cell viability of KCs was suppressed by ozone treatment. Moreover, Tp63 bound to KRT10 promoter region to activate its transcription in basal keratinocytes; the promotive effects of ozone on Tp63 and KRT10 were significantly reversed by Tp63 silence. Both TP63 and KRT10 mRNA expression were significantly increased by ozone treatment in psoriasis lesions; there was a positive correlation between Tp63 and KRT10 expression within tissue samples, suggesting that ozone induces the expression of Tp63 to enhance the expression of KRT10 and the differentiation of keratinocytes, therefore improving the psoriasis. In conclusion, the application of ozonated oil could be an efficient and safe treatment for psoriasis; ozone promotes the differentiation of keratinocytes via increasing Tp63‐mediated transcription of KRT10, therefore improving psoriasis.
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Affiliation(s)
- Lihua Gao
- Department of Physiology, College of Basic Medicine, Central South University, Changsha, China.,Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Jianhua Dou
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Bo Zhang
- Department of Stomatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Jinrong Zeng
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Qingmei Cheng
- Department of Physiology, College of Basic Medicine, Central South University, Changsha, China
| | - Li Lei
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Lina Tan
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Qinghai Zeng
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Shu Ding
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Aiyuan Guo
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Haipeng Cheng
- Department of Physiology, College of Basic Medicine, Central South University, Changsha, China
| | - Caifeng Yang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Ziqiang Luo
- Department of Physiology, College of Basic Medicine, Central South University, Changsha, China
| | - Jianyun Lu
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
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17
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Platto S, Zhu Q, Guo A, He Q, Hu S, Valros A, Irwin A. Chinese farmers' attitude towards the improvement of animal welfare in their facilities. Anim Welf 2020. [DOI: 10.7120/09627286.29.1.099] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This study sought to investigate Chinese farmers' attitude towards animal welfare by using the Theory of Planned Behaviour (TPB). According to the TPB, an individual's intention to behave in a certain way is determined by his/her attitude towards the behaviour (specific attitude —
importance — and general attitudes), the perceived behavioural control (easiness), and the supposed opinion of the people who are important to him/her (subjective norms). A total of 253 questionnaires are used, which included the three main animal productions in chena (swine, poultry
and cattle). Chinese farmers have perceived the improvement of animal welfare as two abstracts: general attitudes (reward-seeking, and empathic farmer); and four specific categories of actions (favourable environment, animal health, humane treatment of animals and farmers' well-being). Our
analysis revealted that general and specific attitudes were the strongest predictors of farmers' intentions to improve animal welfare in the questionnaire study. In fact, Chinese farmers considered it fairly important to improve the animal welfare meaures considered in the survey. In contrast,
the same animal welfare measures were considered difficult to improve by the farmers as indicated by the lack of association between the easiness of improving animal welfare and the intentions. In addition, veterinarians, agricultural advisers, and scientific experts were considered to be
relatively influential subjective norms as regards the activities of the farmers. This is the first study to provide an insight into the underlying meanings and values of Chinese farmers views on improvements to animal welfare.
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18
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Boczar K, Dowlatshahi D, Liu P, DeKemp R, Kelly C, Garrard L, Lefebvre C, Zhang L, Guo A, Chong A, So D, Beanlands R. OTTAWA CRP STUDY AFTER TIA AND VASCULAR EVENTS (OCTAVE). Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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19
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Peng HM, Wang LC, Chen JY, Zhou YX, Tian H, Lin JH, Guo WS, Lin Y, Qu TB, Guo A, Cao YP, Weng XS. [Microbiology analysis of periprothetic joint infection post total hip and knee arthroplasty of 9 centers in Beijing between 2014 and 2016]. Zhonghua Wai Ke Za Zhi 2019; 57:596-600. [PMID: 31422629 DOI: 10.3760/cma.j.issn.0529-5815.2019.08.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the microbiological test, antibiotic sensitivity and surgical treatment of periprosthetic joint infection(PJI) cases in post total hip arthroplasty (THA) and total knee arthroplasty (TKA) patients. Methods: A retrospective cross-sectional survey was conducted on 318 patients who underwent THA or TKA in 9 clinical centers in Beijing from January 2014 to December 2016.The data of microbiology, antibiotic sensitivity and surgical treatment were collected.The average age of patients was (62.3±13.1) years old (range: 21-86 years old), including 145 males and 173 females.The body mass index was (25.6±3.8) kg/m (2) (range: 15.6-38.1 kg/m(2)). Results: In total, 318 patients had microorganisms detected by periprosthetic tissue culture or synovial fluid culture, 209 cases (65.7%) had Gram-positive bacteria, 29 cases (9.1%) had Gram-negative bacteria, 10 cases (3.1%) had fungi, 3 cases (0.9%) had non-tuberculous mycobacteria, 72 cases (22.6%) were negative, 69 cases (21.7%) had methicillin-resistant bacteria. The antibiotic sensitivity results showed that the overall resistance rate of penicillin, cefuroxime, amoxicillin+clavulanic acid was 79.9%, 69.9%, and 68.1%, respectively; meropenem, vancomycin, and linezolid resistance rate was 0. For the treatment methods of hip and knee PJI, two-stage revision surgery acounted for 72.9% (108/148) and 64.1% (109/170), respectively. One-stage revision surgery accounted for 21.6% (32/148) and 7.6% (13/170), and open debridement surgery accounted for 4.7%(7/148) and 26.4% (45/170). Conclusions: Gram-positive bacteria was still the main pathogen of PJI.The methicillin-resistant bacteria and rare bacteria should be payed attention to. The Majority of hip and knee PJI cases were treated by two-stage revision surgery.
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Affiliation(s)
- H M Peng
- Department of Orthopedics, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - L C Wang
- Department of Orthopedics, Guangdong Provincial People's Hospital, Guangzhou 510080, China
| | - J Y Chen
- Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China
| | - Y X Zhou
- Department of Orthopedics, Beijing Jishuitan Hospital, Beijing 100035, China
| | - H Tian
- Department of Orthopedics, Peking University Third Hospital, Beijing 100083, China
| | - J H Lin
- Department of Orthopedics, Peking University People's Hospital, Beijing 100044, China
| | - W S Guo
- Department of Orthopedics, Sino-Japanese Friendship Hospital, Beijing 100029, China
| | - Y Lin
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - T B Qu
- Department of Orthopedics, China Rehabilitation Research Center Beijing Boai Hospital, Beijing 100068, China
| | - A Guo
- Department of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Y P Cao
- Department of Orthopedics, Peking University First Hospital, Beijing 100034, China
| | - X S Weng
- Department of Orthopedics, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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20
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Ding S, Zhang Q, Luo S, Gao L, Huang J, Lu J, Chen J, Zeng Q, Guo A, Zeng J, Lu Q. BCL-6 suppresses miR-142-3p/5p expression in SLE CD4 + T cells by modulating histone methylation and acetylation of the miR-142 promoter. Cell Mol Immunol 2019; 17:474-482. [PMID: 31431691 PMCID: PMC7192839 DOI: 10.1038/s41423-019-0268-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 07/11/2019] [Indexed: 12/15/2022] Open
Abstract
The reduced expression of miR-142-3p/5p in CD4+ T cells of SLE patients caused T cell hyperactivity and B cell hyperstimulation. This study aimed to investigate the mechanisms of regulating miR-142-3p/5p expression in SLE CD4+ T cells. The BCL-6 expression was significantly increased in SLE CD4+ T cells compared with normal controls, and the BCL-6 expression was inversely correlated with miR-142-3p/5p expression. BCL-6 suppresses the expression of miR-142-3p/5p by increasing H3K27me3 level and reducing H3K9/K14ac levels in SLE CD4+ T cells. BCL-6 regulates histone modifications in miR-142 promoter by recruiting EZH2 and HDAC5. Furthermore, we observed significantly decreased CD40L, ICOS, and IL-21 expression levels in SLE CD4+ T cells with BCL-6 interference, and obviously reduced autoantibody IgG production in autologous B cells co-cultured with BCL-6 inhibited SLE CD4+ T cells. Our study found that increased BCL-6 up-regulates H3K27me3 and down-regulates H3K9/14ac at miR-142 promoter in SLE CD4+ T cells. These factors induce a declination in miR-142-3p/5p expression, consequently resulting in CD4+ T cell hyperactivity.
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Affiliation(s)
- Shu Ding
- Department of Dermatology, The Third Xiangya Hospital of Central South University, #138 Tong Zipo Road, 410013, Changsha, Hunan, China
| | - Qing Zhang
- Department of Dermatology, The Second Xiangya Hospital of Central South University, #139 Renmin Middle Road, 410011, Changsha, Hunan, China
| | - Shuangyan Luo
- Department of Dermatology, The Second Xiangya Hospital of Central South University, #139 Renmin Middle Road, 410011, Changsha, Hunan, China
| | - Lihua Gao
- Department of Dermatology, The Third Xiangya Hospital of Central South University, #138 Tong Zipo Road, 410013, Changsha, Hunan, China
| | - Jinhua Huang
- Department of Dermatology, The Third Xiangya Hospital of Central South University, #138 Tong Zipo Road, 410013, Changsha, Hunan, China
| | - Jianyun Lu
- Department of Dermatology, The Third Xiangya Hospital of Central South University, #138 Tong Zipo Road, 410013, Changsha, Hunan, China
| | - Jing Chen
- Department of Dermatology, The Third Xiangya Hospital of Central South University, #138 Tong Zipo Road, 410013, Changsha, Hunan, China
| | - Qinghai Zeng
- Department of Dermatology, The Third Xiangya Hospital of Central South University, #138 Tong Zipo Road, 410013, Changsha, Hunan, China
| | - Aiyuan Guo
- Department of Dermatology, The Third Xiangya Hospital of Central South University, #138 Tong Zipo Road, 410013, Changsha, Hunan, China
| | - Jinrong Zeng
- Department of Dermatology, The Third Xiangya Hospital of Central South University, #138 Tong Zipo Road, 410013, Changsha, Hunan, China.
| | - Qianjin Lu
- Department of Dermatology, The Second Xiangya Hospital of Central South University, #139 Renmin Middle Road, 410011, Changsha, Hunan, China.
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21
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Renaud JM, Wiles M, Aung M, Gardner K, Guo A, Garrard L, Beanlands R, Dekemp R. 243Quality assurance metrics for routine clinical PET rubidium-82 myocardial blood flow quantification. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez145.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J M Renaud
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - M Wiles
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - M Aung
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - K Gardner
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - A Guo
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - L Garrard
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - R Beanlands
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - R Dekemp
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
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22
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Renaud JM, Guo A, Gulenchyn K, Trottier M, Abele J, Harel F, Beanlands RSB, Dekemp RA. P4697Multi-center clinical evaluation of a precision-controlled rubidium-82 elution system for PET myocardial perfusion imaging. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4697] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J M Renaud
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - A Guo
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - K Gulenchyn
- St Joseph's Healthcare Hamilton, Department of Nuclear Medicine, Hamilton, Canada
| | - M Trottier
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Department of Nuclear Medicine, Québec, Canada
| | - J Abele
- University of Alberta Hospital, Department of Radiology & Diagnostic Imaging, Edmonton, Canada
| | - F Harel
- Montreal Heart Institute, Department of Nuclear Medicine, Montreal, Canada
| | - R S B Beanlands
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
| | - R A Dekemp
- University of Ottawa Heart Institute, National Cardiac PET Centre, Ottawa, Canada
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Ding S, Chen J, Zeng Q, Lu J, Tan L, Guo A, Kang J, Yang S, Xiang Y, Zuo C, Huang J. 长期日晒与组蛋白乙酰化变化有关. Br J Dermatol 2018. [DOI: 10.1111/bjd.16866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Ding S, Chen J, Zeng Q, Lu J, Tan L, Guo A, Kang J, Yang S, Xiang Y, Zuo C, Huang J. Chronic sun exposure is associated with histone acetylation changes. Br J Dermatol 2018. [DOI: 10.1111/bjd.16852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ding S, Chen J, Zeng Q, Lu J, Tan L, Guo A, Kang J, Yang S, Xiang Y, Zuo C, Huang J. Chronic sun exposure is associated with distinct histone acetylation changes in human skin. Br J Dermatol 2018; 179:110-117. [PMID: 29150847 DOI: 10.1111/bjd.16129] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2017] [Indexed: 01/24/2023]
Abstract
BACKGROUND Photoageing is attributed to continuous sunlight or artificial ultraviolet exposure and manifests as clinical and histological changes in skin. Epigenetic changes have been found to be involved in the pathogenesis of photoageing. However, the underlying mechanisms are unclear. OBJECTIVES To analyse histone modification patterns in sun-exposed and nonexposed skin, and to identify the abnormally histone-modified genes related to photoageing. METHODS Skin biopsies were collected from both the outer forearm (sun-exposed area) and the buttock (sun-protected area) in 20 healthy middle-aged female volunteers. Global histone H3/H4 acetylation and H3K4/H3K9 methylation statuses were assessed by enzyme-linked immunosorbent assay. Expression levels of histone acetyltransferases and histone deacetylases were measured by reverse-transcriptase quantitative polymerase chain reaction (qPCR) and Western blot. Chromatin immunoprecipitation combined with DNA microarray (ChIP-chip) assay with anti-acetyl-histone H3 antibody in a sun-exposed pool (combining six sun-exposed skin samples) and a nonexposed pool (combining six nonexposed skin samples) was conducted to explore the abnormally acetylated histone H3 genes related to photoageing; ChIP-qPCR was then used to verify the results of ChIP-chip. RESULTS We observed higher global histone H3 acetylation levels increased EP300 and decreased HDAC1 and SIRT1 expression in sun-exposed skin compared with matched nonexposed skin. Furthermore, the ChIP-chip assay showed that 227 genes displayed significant hyperacetylation of histone H3, and 81 genes displayed significant hypoacetylation of histone H3 between the two groups. Histone H3 acetylation levels on the promoters of PDCD5, ITIH5, MMP1 and AHR were positively correlated with the mRNA expression of the corresponding gene. CONCLUSIONS Chronic sun exposure-induced histone H3 hyperacetylation may play a critical role in the pathogenesis of skin photoageing.
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Affiliation(s)
- S Ding
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - J Chen
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - Q Zeng
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - J Lu
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - L Tan
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - A Guo
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - J Kang
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - S Yang
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - Y Xiang
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - C Zuo
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
| | - J Huang
- Department of Dermatology, The Third Xiangya Hospital of Central South University, 138 Tong Zipo Road, Changsha, 410013, Hunan, China
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Guo A, Chen J, Yang C, Ding Y, Zeng Q, Tan L. The challenge of diagnosing seborrheic keratosis by reflectance confocal microscopy. Skin Res Technol 2018; 24:663-666. [PMID: 29797357 DOI: 10.1111/srt.12582] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/02/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND Seborrheic keratosis (SK) is one of the most common skin tumors seen by dermatologists. It should be differentiated with many diseases, especially skin tumors. Reflectance confocal microscopy (RCM) has been applied for evaluation of SK. There are a few studies that describe the RCM of SK. The aim of the study was to find the challenge of diagnosing seborrheic keratosis by reflectance confocal microscopy. METHODS A total of 390 patients with a clinical suspicious diagnosis of seborrheic keratosis were enrolled in this study, and lesions from each patient were imaged with RCM. Thirty-seven of these patients performed a biopsy in order to be given a histological diagnosis. We retrospectively analyzed the outcomes of RCM diagnosis and histological diagnosis, and then found the RCM characteristics of biopsy-proven lesions. RESULTS According to RCM images, 258 of 390 (66.2%) patients were diagnosed with SK, 97 of 390 (24.9%) patients could not be diagnosed by the dermatologist according to RCM. Of all 37 biopsied lesions, 23 were SK, 6 were actinic keratosis, 2 were basal cell carcinoma, and 2 were squamous cell carcinoma. CONCLUSION It is challenge to diagnose seborrheic keratosis by reflectance confocal microscopy. It may due to the variable clinical and RCM appearances of SK, and limited depth of RCM.
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Affiliation(s)
- A Guo
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - J Chen
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - C Yang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Y Ding
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Q Zeng
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - L Tan
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
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Guo A, Sarkar I, Chen E, Walker J, Stey P, Li W, Cho E, Qureshi A. 329 Impact of ultraviolet exposure on merkel cell carcinoma long-term survival. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Gupta G, Guo A, Feng W, Simpson D. A CRISPR Screen to Systematically Identify DNA Repair Gene Alterations that Modulate Sensitivity to DNA Damaging Agents. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.086] [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: 10/18/2022]
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Li J, Guo A, Chen W, Bin L, He Y, Zhu W, Peng C, Yan S, Chen M, Zhang J, Su J, Yi M, Liu Z, Zhang W, Zeng W, Leung DY, Chen X. Association of ORAI1 gene polymorphisms with chronic spontaneous urticaria and the efficacy of the nonsedating H1 antihistamine desloratadine. J Allergy Clin Immunol 2017; 139:1386-1388.e9. [DOI: 10.1016/j.jaci.2016.10.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 09/13/2016] [Accepted: 10/03/2016] [Indexed: 01/13/2023]
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Hawkins R, Guo A, Mehaffey J, Fonner C, Speir A, Rich J, Quader M, Ailawadi G, Yarboro L. Postoperative Atrial Fibrillation After Left Ventricular Assist Device Placement Increases Morbidity and Resource Utilization. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.476] [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] Open
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Guo A, Lu P, Lee J, Zhen C, Chiosis G, Wang YL. HSP90 stabilizes B-cell receptor kinases in a multi-client interactome: PU-H71 induces CLL apoptosis in a cytoprotective microenvironment. Oncogene 2017; 36:3441-3449. [PMID: 28114285 DOI: 10.1038/onc.2016.494] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 10/30/2016] [Accepted: 10/31/2016] [Indexed: 01/15/2023]
Abstract
Chronic lymphocytic leukemia (CLL) is characterized by the accumulation of B cells in the hematopoietic system and lymphoid tissues. Although inhibitors targeting the B-cell receptor (BCR) pathway have been successful in the treatment of the disease, the underlying mechanisms leading to BCR over-activity in CLL are not fully understood. In this study, we found that HSP90, a highly conserved molecular chaperone, is overexpressed in CLL compared with resting B cells. HSP90 overexpression is accompanied by the overexpression of several BCR kinases including LYN, spleen tyrosine kinase, Bruton tyrosine kinase and AKT. Chemical and immune-precipitation demonstrated that these BCR constituents are present in a multi-client chaperone complex with HSP90. Inhibition of HSP90 with PU-H71 destabilized the BCR kinases and caused apoptosis of CLL cells through the mitochondrial apoptotic pathway. Further, PU-H71 induced apoptosis in the presence of stromal co-culture or cytoprotective survival signals. Finally, genetic knockdown of HSP90 and its client AKT, but not BTK, reduced CLL viability. Overall, our study suggests that the chaperone function of HSP90 contributes to the over-activity of the BCR signaling in CLL and inhibition of HSP90 has the potential to achieve a multi-targeting effect. Thus, HSP90 inhibition may be explored to prevent or overcome drug resistance to single targeting agents.
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Affiliation(s)
- A Guo
- Division of Genomic and Molecular Pathology, Department of Pathology, University of Chicago and
| | - P Lu
- Division of Genomic and Molecular Pathology, Department of Pathology, University of Chicago and
| | - J Lee
- Division of Genomic and Molecular Pathology, Department of Pathology, University of Chicago and
| | - C Zhen
- Division of Genomic and Molecular Pathology, Department of Pathology, University of Chicago and
| | - G Chiosis
- Program in Chemical Biology, Memorial Sloan-Kettering Cancer Center, New York, NY, USA and Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Y L Wang
- Division of Genomic and Molecular Pathology, Department of Pathology, University of Chicago and
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Chow SKH, Leung KS, Qin J, Guo A, Sun M, Qin L, Cheung WH. Mechanical stimulation enhanced estrogen receptor expression and callus formation in diaphyseal long bone fracture healing in ovariectomy-induced osteoporotic rats. Osteoporos Int 2016; 27:2989-3000. [PMID: 27155884 DOI: 10.1007/s00198-016-3619-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 04/27/2016] [Indexed: 12/28/2022]
Abstract
UNLABELLED Estrogen receptor (ER) in ovariectomy-induced osteoporotic fracture was reported to exhibit delayed expression. Mechanical stimulation enhanced ER-α expression in osteoporotic fracture callus at the tissue level. ER was also found to be required for the effectiveness of vibrational mechanical stimulation treatment in osteoporotic fracture healing. INTRODUCTION Estrogen receptor(ER) is involved in mechanical signal transduction in bone metabolism. Its expression was reported to be delayed in osteoporotic fracture healing. The purpose of this study was to investigate the roles played by ER during osteoporotic fracture healing enhanced with mechanical stimulation. METHODS Ovariectomy-induced osteoporotic SD rats that received closed femoral fractures were divided into five groups, (i) SHAM, (ii) SHAM-VT, (iii) OVX, (iv) OVX-VT, and (v) OVX-VT-ICI, where VT stands for whole-body vibration treatment and ICI for ER antagonization by ICI 182,780. Callus formation and gene expression were assessed at 2, 4, and 8 weeks postfracture. In vitro osteoblastic differentiation, mineralization, and ER-α expression were assessed. RESULTS The delayed ER expression was found to be enhanced by vibration treatment. Callus formation enhancement was shown by callus morphometry and micro-CT analysis. Enhancement effects by vibration were partially abolished when ER was modulated by ICI 182,780, in terms of callus formation capacity at 2-4 weeks and ER gene and protein expression at all time points. In vitro, ER expression in osteoblasts was not enhanced by VT treatment, but osteoblastic differentiation and mineralization were enhanced under estrogen-deprived condition. When osteoblastic cells were modulated by ICI 182,780, enhancement effects of VT were eliminated. CONCLUSIONS Vibration was able to enhance ER expression in ovariectomy-induced osteoporotic fracture healing. ER was essential in mechanical signal transduction and enhancement in callus formation effects during osteoporotic fracture healing enhanced by vibration. The enhancement of ER-α expression by mechanical stimulation was not likely to be related to the increased expression in osteoblastic cells but rather to the systemic enhancement in recruitment of ER-expressing progenitor cells through increased blood flow and neo-angiogenesis. This finding might explain the observed difference in mechanical sensitivity of osteoporotic fracture to mechanical stimulation.
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Affiliation(s)
- S K H Chow
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
- The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, The People's Republic of China
| | - K S Leung
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
- Translational Medicine Research and Development Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, The People's Republic of China
| | - J Qin
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
| | - A Guo
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
| | - M Sun
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
| | - L Qin
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
- The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, The People's Republic of China
- Translational Medicine Research and Development Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, The People's Republic of China
| | - W H Cheung
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China.
- The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, The People's Republic of China.
- Translational Medicine Research and Development Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, The People's Republic of China.
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Lei L, Huang J, Zeng Q, Xi C, Guo A, Chen J. [Not Available]. Zhong Nan Da Xue Xue Bao Yi Xue Ban 2016; 41:979-83. [PMID: 27640798 DOI: 10.11817/j.issn.1672-7347.2016.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To evaluate the efficacy and influential factors for 308 nm excimer laser in the treatment of stable vitiligo patients.
METHODS A total of 207 stable vitiligo patients with 1 763 patches were treated with 308 nm excimer laser. Open-label study was carried out to investigate the efficacy and safety regarding the treatment with 308 nm excimer laser, and to compare the response under different conditions including gender, age, duration, lesion location, and hair color.
RESULTS After treatment, 560 (31.8%) patches achieved 100% repigmentation, 650 (36.9%) lesions showed 75%-99% repigmentation, 189(10.7%) showed 50%-75% repigmentation, 231(13.1%) showed 25%-49% repigmentation, 108(6.1%) showed 1%-24% repigmentation, 25(1.4%) displayed no response. The rates of total excellent response (50%-100% repigmentation) in underage patients was 86.9%, much higher than that in adult patients (P<0.001). Total excellent response rates was 90.6% in disease duration <2 years, and 40.7% in disease duration ≥2 years. Lesions on the faciocervical region responded better than trunk and limbs, showing 95.4%, 70.3%, and 41.7% total excellent response, respectively. Patients with poliosis showed 54.9% in total excellent response rate, much lower than 84.5% in patients without poliosis(P<0.001). No significant response differences in gender were found.
CONCLUSION 308 nm excimer laser is effective and safe in treatment of vitiligo. Aging, disease duration, lesion location, and hair color in lesion may be the influential factors for 308 nm excimer laser in treatment of vitiligo patients.
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Affiliation(s)
- Li Lei
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - Jinhua Huang
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - Qinghai Zeng
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - Caiyun Xi
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - Aiyuan Guo
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - Jing Chen
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha 410013, China
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Cheng NT, Guo A, Cui YP. Intra-articular injection of Torin 1 reduces degeneration of articular cartilage in a rabbit osteoarthritis model. Bone Joint Res 2016; 5:218-24. [PMID: 27301478 PMCID: PMC4921044 DOI: 10.1302/2046-3758.56.bjr-2015-0001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 03/17/2016] [Indexed: 01/22/2023] Open
Abstract
Objectives Recent studies have shown that systemic injection of rapamycin can prevent the development of osteoarthritis (OA)-like changes in human chondrocytes and reduce the severity of experimental OA. However, the systemic injection of rapamycin leads to many side effects. The purpose of this study was to determine the effects of intra-articular injection of Torin 1, which as a specific inhibitor of mTOR which can cause induction of autophagy, is similar to rapamycin, on articular cartilage degeneration in a rabbit osteoarthritis model and to investigate the mechanism of Torin 1’s effects on experimental OA. Methods Collagenase (type II) was injected twice into both knees of three-month-old rabbits to induce OA, combined with two intra–articular injections of Torin 1 (400 nM). Degeneration of articular cartilage was evaluated by histology using the Mankin scoring system at eight weeks after injection. Chondrocyte degeneration and autophagosomes were observed by transmission electron microscopy. Matrix metallopeptidase-13 (MMP-13) and vascular endothelial growth factor (VEGF) expression were analysed by quantitative RT-PCR (qPCR).Beclin-1 and light chain 3 (LC3) expression were examined by Western blotting. Results Intra-articular injection of Torin 1 significantly reduced degeneration of the articular cartilage after induction of OA. Autophagosomes andBeclin-1 and LC3 expression were increased in the chondrocytes from Torin 1-treated rabbits. Torin 1 treatment also reduced MMP-13 and VEGF expression at eight weeks after collagenase injection. Conclusion Our results demonstrate that intra-articular injection of Torin 1 reduces degeneration of articular cartilage in collagenase-induced OA, at least partially by autophagy activation, suggesting a novel therapeutic approach for preventing cartilage degeneration and treating OA. Cite this article: N-T. Cheng, A. Guo, Y-P. Cui. Intra-articular injection of Torin 1 reduces degeneration of articular cartilage in a rabbit osteoarthritis model. Bone Joint Res 2016;5:218–224. DOI: 10.1302/2046-3758.56.BJR-2015-0001.
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Affiliation(s)
- N-T Cheng
- Beijing Friendship Hospital, Capital Medical University, 95 Yongan Road, Xi-Cheng District, Beijing 100050, China
| | - A Guo
- Beijing Friendship Hospital, Capital Medical University, 95 Yongan Road, Xi-Cheng District, Beijing 100050, China
| | - Y-P Cui
- Beijing Friendship Hospital, Capital Medical University, 95 Yongan Road, Xi-Cheng District, Beijing 100050, China
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Wei FY, Chow SK, Leung KS, Qin J, Guo A, Yu OL, Li G, Cheung WH, Cheung WH. Low-magnitude high-frequency vibration enhanced mesenchymal stem cell recruitment in osteoporotic fracture healing through the SDF-1/CXCR4 pathway. Eur Cell Mater 2016; 31:341-54. [PMID: 27215741 DOI: 10.22203/ecm.v031a22] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Low-magnitude high-frequency vibration (LMHFV) has been proven to promote osteoporotic fracture healing. Mechanical stimulation was reported to enhance SDF-1/CXCR4 signalling in mesenchymal stem cells (MSCs). We hypothesised that LMHFV promoted osteoporotic fracture healing by enhancing MSC migration through the SDF-1/CXCR4 pathway. 152 ovariectomised SD-rats received closed femoral fracture in groups of vibration+MSC (VMG) (20 min/d, 5 d/week), vibration+MSC+AMD3100 (VMAG; AMD, a CXCR4 inhibitor) (1 mg/kg/d, intraperitoneal), MSC (MG) (1 × 106 MSC, intracardiac) or control (CG) for a treatment duration of 2, 4 or 8 weeks. MSC migration was evaluated by ex-vivo green fluorescent protein signal in the callus; and fracture healing was examined by weekly radiographs, endpoint computed-tomography and mechanical test. At week-2 and week-4, ex-vivo callus GFP intensity of VMG was significantly higher than other groups (p < 0.05). From week-2 to week-3, both callus width and callus area in VMG were significantly larger; and from week-7 to week-8, smaller than other groups (p < 0.05). At week-8, high-density bone volume fraction, bone volume fraction, bone mineral density and stiffness in VMG were significantly higher than other 3 groups (p < 0.05). This study demonstrated that LMHFV promoted MSC migration and fracture healing in osteoporotic rats. This effect was attenuated by CXCR4 inhibitor, providing strong evidence that SDF-1-mediated MSC migration was one of the important mechanisms through which LMHFV enhanced fracture healing.
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Affiliation(s)
- F Y Wei
- General Office, Department of Orthopaedics and Traumatology, 5/F Lui Che Woo Clinical Sciences Building, Prince of Wales Hospital, Shatin, Hong
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Zhao Y, Chen W, Zhu W, Li J, Su J, Zhao S, Chen M, Zhang J, Guo A, Yan S, Zhou X, Kuang X, Liu Z, Luo D, Knepper TC, He Y, Chen X. Tandem repeats of TSER significantly influence the efficacy of 5-fluorouracil in the treatment of plantar warts. Per Med 2016; 13:233-240. [PMID: 29767611 DOI: 10.2217/pme-2015-0014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
AIM To identify potential genetic risk markers associated with 5-fluorouracil (5-FU) treatment outcomes in plantar warts patients. METHODS In this study, 126 plantar warts patients were treated with an intralesional mixture of 5-FU, lidocaine and epinephrine. Treatment outcomes were compared with DNA mutation analysis. RESULTS More patients with TSER 3R/3R genotype failed 5-FU treatment than TSER 2R/3R+2R/2R (72.1 vs 43.8%; odds ratio: 3.32; 95% CI: 1.26-8.72; p = 0.013). In addition, the regression modeling identified patient age and TSER 3R allele as covariates of the risk of 5-FU treatment failure (p = 0.025). CONCLUSION TSER 3R/3R of TYMS gene was found to be the major risk of treatment failure. This genetic marker provides a potential treatment stratification target to modulate 5-FU treatment in plantar wart patients.
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Affiliation(s)
- Yue Zhao
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer & Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Department of Dermatology, Heping Hospital, Changzhi Medical College, Changzhi, Shanxi, China
| | - Wangqing Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer & Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wu Zhu
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer & Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jie Li
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer & Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Juan Su
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer & Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Shuang Zhao
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer & Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Mingliang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer & Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jianglin Zhang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer & Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Aiyuan Guo
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer & Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Siyu Yan
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer & Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xingchen Zhou
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer & Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xinwei Kuang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer & Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhaoqian Liu
- Institute of Clinical Pharmacology, Xiangya Hospital, Central South University Changsha, Hunan, China
| | - Dan Luo
- Department of Social Medicine & Health Management, Public Health School, Central South University, Changsha, Hunan, China
| | - Todd C Knepper
- Moffitt Cancer Center, DeBartolo Family Personalized Medicine Institute, Tampa, FL, USA
| | - Yijing He
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer & Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Moffitt Cancer Center, DeBartolo Family Personalized Medicine Institute, Tampa, FL, USA
| | - Xiang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Skin Cancer & Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
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Crocini C, Ferrantini C, Scardigli M, Coppini R, Mazzoni L, Lazzeri E, Pioner JM, Scellini B, Guo A, Song LS, Yan P, Loew LM, Tardiff J, Tesi C, Vanzi F, Cerbai E, Pavone FS, Sacconi L, Poggesi C. Novel insights on the relationship between T-tubular defects and contractile dysfunction in a mouse model of hypertrophic cardiomyopathy. J Mol Cell Cardiol 2015; 91:42-51. [PMID: 26714042 PMCID: PMC4767219 DOI: 10.1016/j.yjmcc.2015.12.013] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 11/16/2015] [Accepted: 12/16/2015] [Indexed: 02/06/2023]
Abstract
Abnormalities of cardiomyocyte Ca2 + homeostasis and excitation–contraction (E–C) coupling are early events in the pathogenesis of hypertrophic cardiomyopathy (HCM) and concomitant determinants of the diastolic dysfunction and arrhythmias typical of the disease. T-tubule remodelling has been reported to occur in HCM but little is known about its role in the E–C coupling alterations of HCM. Here, the role of T-tubule remodelling in the electro-mechanical dysfunction associated to HCM is investigated in the Δ160E cTnT mouse model that expresses a clinically-relevant HCM mutation. Contractile function of intact ventricular trabeculae is assessed in Δ160E mice and wild-type siblings. As compared with wild-type, Δ160E trabeculae show prolonged kinetics of force development and relaxation, blunted force-frequency response with reduced active tension at high stimulation frequency, and increased occurrence of spontaneous contractions. Consistently, prolonged Ca2 + transient in terms of rise and duration are also observed in Δ160E trabeculae and isolated cardiomyocytes. Confocal imaging in cells isolated from Δ160E mice reveals significant, though modest, remodelling of T-tubular architecture. A two-photon random access microscope is employed to dissect the spatio-temporal relationship between T-tubular electrical activity and local Ca2 + release in isolated cardiomyocytes. In Δ160E cardiomyocytes, a significant number of T-tubules (> 20%) fails to propagate action potentials, with consequent delay of local Ca2 + release. At variance with wild-type, we also observe significantly increased variability of local Ca2 + transient rise as well as higher Ca2 +-spark frequency. Although T-tubule structural remodelling in Δ160E myocytes is modest, T-tubule functional defects determine non-homogeneous Ca2 + release and delayed myofilament activation that significantly contribute to mechanical dysfunction. Contraction and Ca2 + transient kinetics are impaired in myocardial preparations from mice carrying the cardiac troponin T ∆ 160E mutation. T-tubules architecture is mildly altered in ∆160E cardiomyocytes. 20% of T-tubules fail to propagate action potential and produce delay of local Ca2 + rise. Higher spatio-temporal variability of local Ca2 + rise and increased Ca2 + sparks frequency are found in ∆160E cardiomyocytes.
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Affiliation(s)
- C Crocini
- European Laboratory for Non-Linear Spectroscopy, 50019 Florence, Italy
| | - C Ferrantini
- Division of Physiology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - M Scardigli
- European Laboratory for Non-Linear Spectroscopy, 50019 Florence, Italy
| | - R Coppini
- Division of Pharmacology, Department "NeuroFarBa", University of Florence, 50139 Florence, Italy
| | - L Mazzoni
- Division of Pharmacology, Department "NeuroFarBa", University of Florence, 50139 Florence, Italy
| | - E Lazzeri
- European Laboratory for Non-Linear Spectroscopy, 50019 Florence, Italy
| | - J M Pioner
- Division of Physiology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - B Scellini
- Division of Physiology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - A Guo
- Division of Cardiovascular Medicine, Department of Internal Medicine and Francois M. Abboud Cardiovascular Research Center, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - L S Song
- Division of Cardiovascular Medicine, Department of Internal Medicine and Francois M. Abboud Cardiovascular Research Center, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - P Yan
- R. D. Berlin Center for Cell Analysis and Modeling, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - L M Loew
- R. D. Berlin Center for Cell Analysis and Modeling, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - J Tardiff
- Cellular and Molecular Medicine, University of Arizona, Tucson, AZ 85721, USA
| | - C Tesi
- Division of Physiology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - F Vanzi
- European Laboratory for Non-Linear Spectroscopy, 50019 Florence, Italy
| | - E Cerbai
- Division of Pharmacology, Department "NeuroFarBa", University of Florence, 50139 Florence, Italy
| | - F S Pavone
- European Laboratory for Non-Linear Spectroscopy, 50019 Florence, Italy; Department of Physics and Astronomy, University of Florence, 50019 Sesto Fiorentino, Italy; National Institute of Optics, National Research Council, 50125 Florence, Italy
| | - L Sacconi
- European Laboratory for Non-Linear Spectroscopy, 50019 Florence, Italy; National Institute of Optics, National Research Council, 50125 Florence, Italy.
| | - C Poggesi
- Division of Physiology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy.
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Pan Y, Cao F, Guo A, Chang W, Chen X, Ma W, Gao X, Guo S, Fu C, Zhu J. Endoplasmic reticulum ribosome-binding protein 1, RRBP1, promotes progression of colorectal cancer and predicts an unfavourable prognosis. Br J Cancer 2015. [PMID: 26196185 PMCID: PMC4559827 DOI: 10.1038/bjc.2015.260] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Ribosome-binding protein 1 (RRBP1) has been implicated in the regulation of unfolded protein response, which is involved in almost every aspect of cancer development. We aimed to explore the significance of RRBP1 in the progression and prognosis of colorectal cancer (CRC). METHODS The study population consisted of 856 patients with stage I-III CRC from two hospitals. RRBP1 expression was examined by immunohistochemistry (IHC) in colorectal tissues. The correlation of RRBP1 expression and CRC occurrence was assessed in paired cancer-adjacent tissues. Factors contributing to prognosis were evaluated in a training-validation design with univariate and multivariate Cox analysis. Colorectal cancer aggressiveness caused by RRBP1 knockdown or overexpression was evaluated in CRC cells. RESULTS RRBP1 was aberrantly overexpressed in CRC. Compared with low-RRBP1 patients, high-RRBP1 patients had shorter disease-specific survival in the training (hazard ratio (HR), 2.423; 95% confidence interval (CI), 1.531-3.835) and validation cohorts (HR, 3.749; 95% CI, 2.166-6.448) in multivariate Cox analysis. High-RRBP1 independently predicted a shorter disease-free survival (HR, 4.821; 95% CI, 3.220-7.218) in the validation cohort. RRBP1 knockdown reduced the aggressiveness of CRC cells in vitro and inhibited the growth of CRC xenografts in vivo. CONCLUSIONS High RRBP1 expression facilitates CRC progression and predicts an unfavourable post-operative prognosis.
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Affiliation(s)
- Y Pan
- Department of Digestive Endoscopy, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, 528 Zhangheng Road, Shanghai, 201203, China
| | - F Cao
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, 174 Changhai Road, Shanghai, 200433, China
| | - A Guo
- Department of Internal Medicine, Yangpu Hosptial, Tongji University School of Medicine, 450 Tengyue Road, Shanghai, 200090, China
| | - W Chang
- Department of Environmental Hygiene, Second Military Medical University, 800 Xiangyin Road, Shanghai, 200433, China
| | - X Chen
- Department of Environmental Hygiene, Second Military Medical University, 800 Xiangyin Road, Shanghai, 200433, China
| | - W Ma
- Department of Environmental Hygiene, Second Military Medical University, 800 Xiangyin Road, Shanghai, 200433, China
| | - X Gao
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, 174 Changhai Road, Shanghai, 200433, China
| | - S Guo
- Department of Pathology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, 528 Zhangheng Road, Shanghai, 201203, China
| | - C Fu
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, 174 Changhai Road, Shanghai, 200433, China
| | - J Zhu
- Department of Environmental Hygiene, Second Military Medical University, 800 Xiangyin Road, Shanghai, 200433, China
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Zeng J, Ma L, Meng H, Yu H, Zhang Y, Guo A. Effect of Ginkgo biloba extract on matrix metalloproteinase-3 expression in a rat model of chondrocyte injury. Genet Mol Res 2015; 14:18280-6. [DOI: 10.4238/2015.december.23.15] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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40
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Guo A, Zhu W, Zhang C, Wen S, Chen X, Chen M, Zhang J, Su J, Chen W, Zhao Y, Yan S, He Y, Liu Z, Zhou H, Chen X, Li J. Association of FCER1A genetic polymorphisms with risk for chronic spontaneous urticaria and efficacy of nonsedating H1-antihistamines in Chinese patients. Arch Dermatol Res 2014; 307:183-90. [DOI: 10.1007/s00403-014-1525-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 10/15/2014] [Accepted: 11/03/2014] [Indexed: 01/01/2023]
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41
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Srivaratharajah K, R deKemp, Liu P, Haddad H, Stadnick E, Dwivedi G, Davies R, Guo A, Beanlands R, Mielniczuk L. EVALUATION OF MYOCARDIAL FLOW RESERVE WITH CARDIAC PET IMAGING IN HEART FAILURE PATIENTS WITH PRESERVED EJECTION FRACTION. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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42
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Li Q, Li J, Wen T, Zeng W, Peng C, Yan S, Tan J, Yang K, Liu S, Guo A, Zhang C, Su J, Jiang M, Liu Z, Zhou H, Chen X. Overexpression of HMGB1 in melanoma predicts patient survival and suppression of HMGB1 induces cell cycle arrest and senescence in association with p21 (Waf1/Cip1) up-regulation via a p53-independent, Sp1-dependent pathway. Oncotarget 2014; 5:6387-403. [PMID: 25051367 PMCID: PMC4171638 DOI: 10.18632/oncotarget.2201] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [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] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 07/09/2014] [Indexed: 11/25/2022] Open
Abstract
Although laboratory studies have implicated the high mobility group box 1 (HMGB1) in melanoma, its clinical relevance remains unclear. We analyzed nearly 100 cases of human melanoma and found that HMGB1 was highly overexpressed in melanoma samples relative to normal skin and nevi tissues. Significantly, higher levels of HMGB1 correlated with more advanced disease stages and with poorer survival in melanoma patients. Unlike the well-documented pro-inflammatory role of the extracellular HMGB1, we found that its intracellular activity is necessary for melanoma cell proliferation. An absolute dependency of melanoma cell proliferation on HMGB1 was underscored by the marked response of cell cycle arrest and senescence to HMGB1 knockdown. We demonstrated that HMGB1 deficiency-induced inhibition of cell proliferation was mediated by p21, which was induced via a Sp1-dependent mechanism. Taken together, our data demonstrate a novel oncogenic role of HMGB1 in promoting human melanoma cell proliferation and have important implications in melanoma patient care.
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Affiliation(s)
- Qingling Li
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Jie Li
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Ting Wen
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Weiqi Zeng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Cong Peng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Siyu Yan
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Jieqiong Tan
- State Key Laboratory of Medical Genetics, Xiangya Medical School, Central South University, Changsha, 410008, China
| | - Keda Yang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Shuang Liu
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Aiyuan Guo
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Chong Zhang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Juan Su
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Minghao Jiang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Zhaoqian Liu
- Institute of Clinical Pharmacology, Xiangya School of Medicine, Central South University, Changsha, 410008, China
| | - Honghao Zhou
- Institute of Clinical Pharmacology, Xiangya School of Medicine, Central South University, Changsha, 410008, China
| | - Xiang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China
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Qin J, Chow SKH, Guo A, Wong WN, Leung KS, Cheung WH. Low magnitude high frequency vibration accelerated cartilage degeneration but improved epiphyseal bone formation in anterior cruciate ligament transect induced osteoarthritis rat model. Osteoarthritis Cartilage 2014; 22:1061-7. [PMID: 24852700 DOI: 10.1016/j.joca.2014.05.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 05/07/2014] [Accepted: 05/12/2014] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To evaluate the effects of low-magnitude high-frequency vibration (LMHFV) on degenerated articular cartilage and subchondral bone in anterior cruciate ligament transection (ACLT) induced osteoarthritis (OA) rat model. METHODS 6 months old female Sprague-Dawley rats received ACLT on right knee and randomly divided into treatment and control groups. OA developed 12 weeks after surgery. LMHFV (35 Hz, 0.3 g) treatment was given 20 min/day and 5 days/week. After 6, 12 and 18 weeks, six rats of each group were sacrificed at each time point and the right knees were harvested. OA grading score, distal femur cartilage volume (CV), subchondral bone morphology, elastic modulus of cartilage and functional changes between groups were analyzed. RESULTS Increased cartilage degradation (higher OA grading score) and worse functional results (lower duty cycle, regular index and higher limb idleness index) were observed after LMHFV treatment (P = 0.011, 0.020, 0.012 and 0.005, respectively). CV increased after LMHFV treatment (P = 0.019). Subchondral bone density increased with OA progress (P < 0.01). Increased BV/TV, Tb.N and decreased Tb.Sp were observed in distal femur epiphysis in LMHFV treatment group (P = 0.006, 0.018 and 0.011, respectively). CONCLUSION LMHFV accelerated cartilage degeneration and caused further functional deterioration of OA affected limb in ACLT-induced OA rat model. In contrast, LMHFV promoted bone formation in OA affected distal femur epiphysis, but did not reverse OA progression.
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Affiliation(s)
- J Qin
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - S K-H Chow
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - A Guo
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - W-N Wong
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - K-S Leung
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - W-H Cheung
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
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Zhu X, You Y, Li Q, Zeng C, Fu F, Guo A, Zhang H, Zou P, Zhong Z, Wang H, Wu Y, Li Q, Kong F, Chen Z. BCR-ABL1–positive microvesicles transform normal hematopoietic transplants through genomic instability: implications for donor cell leukemia. Leukemia 2014; 28:1666-75. [DOI: 10.1038/leu.2014.51] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 01/19/2014] [Accepted: 01/24/2014] [Indexed: 12/20/2022]
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45
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Rogers J, Guo A, Goodyer I, Wilkinson P. EPA-1075 – Initial insomnia and cortisol levels in depressed adolescents. Eur Psychiatry 2014. [DOI: 10.1016/s0924-9338(14)78355-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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46
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Ohira H, Birnie D, Mc Ardle B, Leung E, Yoshinaga K, Tsujino I, Sato T, Bernick J, Wells G, Klein R, Guo A, Garrard L, Ruddy T, Chow B, Davies R, Hessian R, Kingsbury K, Beanlands R, Nery P. Different Characteristics of Disease Detection Between 18F-Fluorodeoxyglucose-Positron Emission Tomography (FDG-PET) and Cardiac Magnetic Resonance (CMR) in Patients With Conduction Disease Due to Cardiac Sarcoidosis. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.451] [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: 10/26/2022] Open
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47
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McArdle BA, Davies R, Small G, Yam Y, Haddad H, Mielniczuk L, Stadnick E, Guo A, Beanlands R, R deKemp, Chow B. Prognostic Value of Rubidium-82 Positron Emission Tomography for Evaluation of Patients Following Cardiac Transplantation. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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48
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Chu TH, Wang L, Guo A, Chan VWK, Wong CWM, Wu W. GDNF-treated acellular nerve graft promotes motoneuron axon regeneration after implantation into cervical root avulsed spinal cord. Neuropathol Appl Neurobiol 2013; 38:681-95. [PMID: 22289090 DOI: 10.1111/j.1365-2990.2012.01253.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
UNLABELLED It is well known that glial cell line-derived neurotrophic factor (GDNF) is a potent neurotrophic factor for motoneurons. We have previously shown that it greatly enhanced motoneuron survival and axon regeneration after implantation of peripheral nerve graft following spinal root avulsion. AIMS In the current study, we explore whether injection of GDNF promotes axon regeneration in decellularized nerve induced by repeated freeze-thaw cycles. METHODS We injected saline or GDNF into the decellularized nerve after root avulsion in adult Sprague-Dawley rats and assessed motoneuron axon regeneration and Schwann cell migration by retrograde labelling and immunohistochemistry. RESULTS We found that no axons were present in saline-treated acellular nerve whereas Schwann cells migrated into GDNF-treated acellular nerve grafts. We also found that Schwann cells migrated into the nerve grafts as early as 4 days after implantation, coinciding with the first appearance of regenerating axons in the grafts. Application of GDNF outside the graft did not induce Schwann cell infiltration nor axon regeneration into the graft. Application of pleiotrophin, a trophic factor which promotes axon regeneration but not Schwann cell migration, did not promote axon infiltration into acellular nerve graft. CONCLUSIONS We conclude that GDNF induced Schwann cell migration and axon regeneration into the acellular nerve graft. Our findings can be of potential clinical value to develop acellular nerve grafting for use in spinal root avulsion injuries.
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Affiliation(s)
- T-H Chu
- Department of Anatomy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR
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Abstract
Cyclical oversupply and non-profitability situations have led to pig industry consolidations in the People's Republic of China, with many smaller farmers leaving the industry. In 2007, pork supply worsened due to outbreaks of 'high fever blue-ear disease', a complex disease issue that includes highly virulent porcine reproductive and respiratory syndrome, porcine circovirus and classical swine fever. Best estimates suggest that 50 million pigs were affected. More recent natural disasters (earthquakes/freezing winters) have also limited pig production in some areas. Overall expansion of the Chinese breeding herd is now continuing at a good pace and is likely to be sufficient to supply the predicted 7% annual increase in demand for pork. High prices of feed ingredients (cereals and soybean) continue to create cost-of-production issues. Authorities have instigated many helpful measures over the past decade, including insurance for farm breeder stock, direct subsidies for farm expansions and breeding programmes, free supplies of some vaccines, and taxation exemptions. Specific challenges remaining include: the high levels of spread, persistence and on-farm impact of key virus infections on single-site farm systems; the variable titre and potency of some local vaccines; the low level of technical capacity in laboratories and the lack of training and expertise among farm staff; and the lack of a distinctive representative voice for pig farmers.
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Affiliation(s)
- S McOrist
- University of Nottingham, Tai King East Road, Ningbo Higher Education Park, Ningbo 315000, People's Republic of China.
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50
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Hall A, Ziadi M, Leech J, Chen S, Burwash I, Renaud J, deKemp R, Haddad H, Mielniczuk L, Yoshinaga K, DaSilva J, Walter O, Guo A, Chen L, Garrard L, Floras J, Beanlands R. 238 Does Short Term Continuous Positive Airway Pressure Alter Myocardial Energetics and Pre-Synaptic Sympathetic Nerve Function in Patients With Heart Failure and Obstructive Sleep Apnea? A Randomized Study. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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