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Yang CH, Ho YH, Tang HY, Lo CJ. NMR-Based Analysis of Plasma Lipoprotein Subclass and Lipid Composition Demonstrate the Different Dietary Effects in ApoE-Deficient Mice. Molecules 2024; 29:988. [PMID: 38474500 DOI: 10.3390/molecules29050988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 02/22/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024] Open
Abstract
Plasma lipid levels are commonly measured using traditional methods such as triglycerides (TG), high-density lipoprotein (HDL), low-density lipoprotein (LDL), and cholesterol (CH). However, the use of newer technologies, such as nuclear magnetic resonance (NMR) with post-analysis platforms, has made it easier to assess lipoprotein profiles in research. In this study involving ApoE-deficient mice that were fed high-fat diets, significant changes were observed in TG, CH, free cholesterol (FC), and phospholipid (PL) levels within the LDL fraction. The varied proportions of TG in wild-type mice and CH, FC, and PL in ApoE-/- mice were strikingly different in very low-density lipoproteins (VLDL), LDL, intermediate-density lipoprotein (IDL), and HDL. This comprehensive analysis expands our understanding of lipoprotein subfractions and the impacts of the APOE protein and high-fat diet in mouse models. The new testing method allows for a complete assessment of plasma lipids and their correlation with genetic background and diet in mice.
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Affiliation(s)
- Cheng-Hung Yang
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City 33302, Taiwan
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan
| | - Yu-Hsuan Ho
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City 33302, Taiwan
| | - Hsiang-Yu Tang
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City 33302, Taiwan
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan
| | - Chi-Jen Lo
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan City 33302, Taiwan
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Ho HY, Chen YH, Lo CJ, Tang HY, Chang SW, Fan CM, Ho YH, Lin G, Chiu CY, Lin CM, Cheng ML. Combined Plasma DHA-Containing Phosphatidylcholine PCaa C38:6 and Tetradecanoyl-Carnitine as an Early Biomarker for Assessing the Mortality Risk among Sarcopenic Patients. Nutrients 2024; 16:611. [PMID: 38474739 DOI: 10.3390/nu16050611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/15/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024] Open
Abstract
The coming of the hyper-aged society in Taiwan prompts us to investigate the relationship between the metabolic status of sarcopenic patients and their most adverse outcome-death. We studied the association between any plasma metabolites and the risk for mortality among older Taiwanese sarcopenic patients. We applied a targeted metabolomic approach to study the plasma metabolites of adults aged ≥65 years, and identified the metabolic signature predictive of the mortality of sarcopenic patients who died within a 5.5-year follow-up period. Thirty-five sarcopenic patients who died within the follow-up period (Dead cohort) had shown a specific plasma metabolic signature, as compared with 54 patients who were alive (Alive cohort). Only 10 of 116 non-sarcopenic individuals died during the same period. After multivariable adjustment, we found that sex, hypertension, tetradecanoyl-carnitine (C14-carnitine), and docosahexaenoic acid (DHA)-containing phosphatidylcholine diacyl (PCaa) C38:6 and C40:6 were important risk factors for the mortality of sarcopenic patients. Low PCaa C38:6 levels and high C14-carnitine levels correlated with an increased mortality risk; this was even the same for those patients with hypertension (HTN). Our findings suggest that plasma PCaa C38:6 and acylcarnitine C14-carnitine, when combined, can be a better early biomarker for evaluating the mortality risk of sarcopenia patients.
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Grants
- BMRP819, BMRP564, CMRPD1L0161, CMRPD1L0162, CMRPD1M0351, CMRPD1J0263, CMRPD1M0341 and CLRPG3K0023 Chang Gung Memorial Hospital
- 110-2320-B-182-017-MY3 and 111-2320-B-182-011 National Science and Technology Council (Taiwan region)
- EMRPD1K0441, EMRPD1K0481, and EMRPD1L0421 Ministry of Education (Taiwan region)
- MOST 111-2634-F-182-001 The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE)(Taiwan region) and the National Science and Technology Council (NSTC)(Taiwan region)
- CMRPD1M0352, CMRPD1N0151, CMRPD1M0342, CMRPD1N0071,112-2320-B-182-020-MY3 Chang Gung Memorial Hospital
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Affiliation(s)
- Hung-Yao Ho
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital at Linkou, Taoyuan 333, Taiwan
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Yuan-Ho Chen
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Chi-Jen Lo
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital at Linkou, Taoyuan 333, Taiwan
| | - Hsiang-Yu Tang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan
| | - Su-Wei Chang
- Department of Artificial Intelligence, College of Intelligent Computing, Chang Gung University, Taoyuan 333, Taiwan
- Department of Laboratory Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan 333, Taiwan
| | - Chun-Ming Fan
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan
| | - Yu-Hsuan Ho
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Gigin Lin
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital at Linkou, Taoyuan 333, Taiwan
- Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital at Linkou and Chang Gung University, Taoyuan 333, Taiwan
- Department of Medical Imaging and Radiological Sciences, Chang Gung University, Taoyuan 333, Taiwan
| | - Chih-Yung Chiu
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital at Linkou, Taoyuan 333, Taiwan
- Department of Pediatrics, Chang Gung Memorial Hospital at Linkou and Chang Gung University, Taoyuan 333, Taiwan
- Department of Pediatrics, Chang Gung Memorial Hospital at Keelung and Chang Gung University, Taoyuan 333, Taiwan
| | - Chih-Ming Lin
- Division of Internal Medicine, Chang Gung Memorial Hospital at Taipei, Taipei 105, Taiwan
- Department of Health Management, Chang Gung Health and Culture Village, Taoyuan 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Mei-Ling Cheng
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital at Linkou, Taoyuan 333, Taiwan
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
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Yang CJ, Chang HC, Sung PC, Ge MC, Tang HY, Cheng ML, Cheng HT, Chou HH, Lin CY, Lin WR, Lee YS, Hsieh SY. Oral fecal transplantation enriches Lachnospiraceae and butyrate to mitigate acute liver injury. Cell Rep 2024; 43:113591. [PMID: 38153838 DOI: 10.1016/j.celrep.2023.113591] [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: 07/20/2023] [Revised: 11/07/2023] [Accepted: 12/01/2023] [Indexed: 12/30/2023] Open
Abstract
While fecal microbiota transplantation (FMT) shows promise in treating human diseases, oral capsule FMT is more accepted and accessible to patients. However, microbe selection in the upper gastrointestinal tract (UGIT) through oral administration remains unclear. Here, we demonstrate that short-term oral fecal gavage (OFG) alleviates acetaminophen-induced acute liver injury (AILI) in mice, regardless of the divergent effects of commensal gut microbes. Pasteurized fecal gavage yields similar therapeutic effects. OFG enriches gut Lachnospiraceae and butyrate compared to donor feces. Butyrate mitigates AILI-induced ferroptosis via AMPK-ULK1-p62 signaling to simultaneously induce mitophagy and Nrf2 antioxidant responses. Combined N-acetylcysteine and butyrate administration significantly improves AILI mouse survival rates. These observations indicate the significance of the UGIT in modulating the implanted fecal microbes through oral administration and its potential biological and clinical impacts. Our findings also highlight a possible strategy for applying microbial metabolites to treat acute liver injury.
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Affiliation(s)
- Chun-Ju Yang
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Taoyuan, Linkou 333, Taiwan
| | - Hao-Chun Chang
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Taoyuan, Linkou 333, Taiwan
| | - Pin-Cheng Sung
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Taoyuan, Linkou 333, Taiwan
| | - Mao-Cheng Ge
- Department of Biomedical Sciences, Chang Gung University, Taoyuan 333, Taiwan
| | - Hsiang-Yu Tang
- Department of Laboratory Medicine, Chang Gung University, Taoyuan 333, Taiwan; Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Mei-Ling Cheng
- Department of Laboratory Medicine, Chang Gung University, Taoyuan 333, Taiwan; Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Hao-Tsai Cheng
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Taoyuan, Linkou 333, Taiwan; Devision of Gastroenterology and Hepatology, New Taipei Municipal TuCheng Hospital, New Taipei City 236, Taiwan; Grandulate Institute of Clinical Medicine, College of Medicine, Chang Gung University 333, Taoyuan, Taiwan
| | - Hong-Hsue Chou
- Department of General Surgery, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Cheng-Yu Lin
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Taoyuan, Linkou 333, Taiwan
| | - Wey-Ran Lin
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Taoyuan, Linkou 333, Taiwan
| | - Yun-Shien Lee
- Genomic Medicine Research Core Laboratory, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan; Department of Biotechnology, Ming Chuan University, Taoyuan 333, Taiwan
| | - Sen-Yung Hsieh
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Taoyuan, Linkou 333, Taiwan; Grandulate Institute of Clinical Medicine, College of Medicine, Chang Gung University 333, Taoyuan, Taiwan.
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Lo CJ, Lin CM, Fan CM, Tang HY, Liu HF, Ho HY, Cheng ML. Plasma acylcarnitine in elderly Taiwanese: as biomarkers of possible sarcopenia and sarcopenia. BMC Geriatr 2023; 23:769. [PMID: 37993772 PMCID: PMC10666394 DOI: 10.1186/s12877-023-04485-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 11/14/2023] [Indexed: 11/24/2023] Open
Abstract
BACKGROUND Sarcopenia is defined as the disease of muscle loss and dysfunction. The prevalence of sarcopenia is strongly age-dependent. It could bring about disability, hospitalization, and mortality. The purpose of this study was to identify plasma metabolites associated with possible sarcopenia and muscle function to improve disease monitoring and understand the mechanism of muscle strength and function decline. METHODS The participants were a group of healthy older adult who live in retirement homes in Asia (Taiwan) and can manage their daily lives without assistance. The participants were enrolled and divided into four groups: control (Con, n = 57); low physical function (LPF, n = 104); sarcopenia (S, n = 63); and severe sarcopenia (SS, n = 65) according to Asian countries that used Asian Working Group for Sarcopenia (AWGS) criteria. The plasma metabolites were used and the results were calculated as the difference between the control and other groups. RESULTS Clinical parameters, age, gender, body mass index (BMI), hand grip strength (HGS), gait speed (GS), blood urea nitrogen (BUN), hemoglobin, and hematocrit were significantly different between the control and LPF groups. Metabolite patterns of LPF, S, and SS were explored in our study. Plasma kynurenine (KYN) and acylcarnitines (C0, C4, C6, and C18:1-OH) were identified with higher concentrations in older Taiwanese adults with possible sarcopenia and S compared to the Con group. After multivariable adjustment, the data indicate that age, BMI, and butyrylcarnitine (C4) are more important factors to identify individuals with low physical function and sarcopenia. CONCLUSION This metabolomic study raises the importance of acylcarnitines on muscle mass and function. It suggests that age, BMI, BUN, KYN, and C4/Cr can be important evaluation markers for LPF (AUC: 0.766), S (AUC: 0.787), and SS (AUC: 0.919).
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Grants
- BMRP819, BMRP564, CMRPD1H0201, CMRPD1H0202, CMRPD1J0341, CMRPD1H0511, CMRPD1J0261, CMRPD1M0341 Chang Gung Memorial Hospital
- 111-2320-B-182-011 Ministry of Science and Technology in Taiwan
- EMRPD1G0251, EMRPD1H0401, EMRPD1I0501, EMRPD1I0461, EMRPD1M0421 Ministry of Education in Taiwan
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Affiliation(s)
- Chi-Jen Lo
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City, 33302, Taiwan
| | - Chih-Ming Lin
- Division of Internal Medicine, Chang Gung Memorial Hospital, Taipei, 105, Taiwan
- Department of Health Management, Chang Gung Health and Culture Village, Taoyuan City, 333, Taiwan
| | - Chun-Ming Fan
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City, 33302, Taiwan
| | - Hsiang-Yu Tang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City, 33302, Taiwan
| | - Han-Fang Liu
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City, 33302, Taiwan
| | - Hung-Yao Ho
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City, 33302, Taiwan
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan City, 33302, Taiwan
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City, 33302, Taiwan
| | - Mei-Ling Cheng
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City, 33302, Taiwan.
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan City, 33302, Taiwan.
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City, 33302, Taiwan.
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Tang HY, Huang JE, Tsau MT, Chang CJ, Tung YC, Lin G, Cheng ML. Metabolomics Assessment of Volume Overload-Induced Heart Failure and Oxidative Stress in the Kidney. Metabolites 2023; 13:1165. [PMID: 37999260 PMCID: PMC10672757 DOI: 10.3390/metabo13111165] [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: 10/08/2023] [Revised: 11/15/2023] [Accepted: 11/16/2023] [Indexed: 11/25/2023] Open
Abstract
The incidence of heart failure (HF) is increasing and is associated with a poor prognosis. Moreover, HF often coexists with renal dysfunction and is associated with a worsened outcome. In many experimental studies on cardiac dysfunction, the function of other organs was either not addressed or did not show any decline. Until now, the exact mechanisms for initiating and sustaining this interaction are still unknown. The objective of this study is to use volume overload to induce cardiac hypertrophy and HF in aortocaval fistula (ACF) rat models, and to elucidate how volume overload affects metabolic changes in the kidney, even with normal renal function, in HF. The results showed the metabolic changes between control and ACF rats, including taurine metabolism; purine metabolism; glycine, serine, and threonine metabolism; glycerophospholipid metabolism; and histidine metabolism. Increasing the downstream purine metabolism from inosine to uric acid in the kidneys of ACF rats induced oxidative stress through xanthine oxidase. This result was consistent with HK-2 cells treated with xanthine and xanthine oxidase. Under oxidative stress, taurine accumulation was observed in ACF rats, indicating increased activity of the hypotaurine-taurine pathway as a defense mechanism against oxidative stress in the kidney. Another antioxidant, ascorbic acid 2-sulfate, showed lower levels in ACF rats, indicating that the kidneys experience elevated oxidative stress due to volume overload and HF. In summary, metabolic profiles are more sensitive than clinical parameters in reacting to damage to the kidney in HF.
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Affiliation(s)
- Hsiang-Yu Tang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan; (H.-Y.T.); (M.-T.T.)
| | - Jyh-En Huang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City 33302, Taiwan;
| | - Ming-Tong Tsau
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan; (H.-Y.T.); (M.-T.T.)
| | - Chi-Jen Chang
- Department of Cardiology, Linkou Chang Gung Memorial Hospital, Taoyuan City 33323, Taiwan; (C.-J.C.); (Y.-C.T.)
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan City 33302, Taiwan
| | - Ying-Chang Tung
- Department of Cardiology, Linkou Chang Gung Memorial Hospital, Taoyuan City 33323, Taiwan; (C.-J.C.); (Y.-C.T.)
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan City 33302, Taiwan
| | - Gigin Lin
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan City 33323, Taiwan;
- Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital at Linkou, Taoyuan City 33323, Taiwan
- Imaging Core Laboratory, Institute for Radiological Research, Chang Gung University, Taoyuan City 33323, Taiwan
- Department of Medical Imaging and Radiological Sciences, Chang Gung University, Taoyuan City 33302, Taiwan
| | - Mei-Ling Cheng
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan; (H.-Y.T.); (M.-T.T.)
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City 33302, Taiwan;
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan City 33323, Taiwan;
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City 33302, Taiwan
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Tang HY, Jiang X, Zhang DJ, Chen BT, Qian T, Yao ZQ, Yang X, Yu FB, Song TT, Hao F. [Identification and preliminary validation of potential biomarkers in the peripheral blood mononuclear cells of atopic dermatitis]. Zhonghua Yi Xue Za Zhi 2023; 103:3033-3040. [PMID: 37813654 DOI: 10.3760/cma.j.cn112137-20230128-00128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
Objective: To explore the difference of peripheral blood mononuclear cells (PBMC) transcripts between atopic dermatitis (AD) and healthy controls, and to screen and preliminarily validate potential biomarkers of AD. Methods: From January 2021 to May 2022, blood samples from 9 AD patients and 10 healthy controls were collected from the Dermatology and Cosmetic Center of the Third Affiliated Hospital of Chongqing Medical University, ribonucleic acid-sequencing (RNA-seq) was used to determine the transcriptome and relative expression of PBMC, the differentially expressed genes (DEGs) were analyzed by gene ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) and protein-protein interaction networks (PPI) analysis, and the potential biomarkers were identified by quantitative real-time PCR (qRT-PCR). Results: The age of patients in the AD group [M (Q1, Q3)] was 26.50 (22.75, 30.50) years old, and the course of disease [M (Q1, Q3)] was 15 (10, 20) years,and the age of the healthy control group [M (Q1, Q3)] was 37.00 (27.75, 40.25) years old. Compared with healthy controls, 1 044 DEGs were detected in PBMC samples in AD group, including 668 up-regulated genes and 376 down-regulated genes. Differential variable splicing (AS) showed that mutually exclusive exons (46.74%) and skipped exon (31.01%) accounted for a large proportion. GO and KEGG enrichment analysis revealed that AD is closely linked to DEGs implicated in the inflammatory response and cytokine interaction and signal pathway. Comprehensive enrichment analysis and PPI analysis selected the expression of 8 candidate genes (CCL4, CCR3, CXCR5, NFKBIA, CXCL1, IL-1B, CCL20, LY96), which was confirmed by qRT-PCR and were consistent with that of RNA-seq. Conclusions: CCL4, CCR3, CXCR5, NFKBIA, CXCL1, IL-1B, CCL20 and LY96 might be potential biomarkers of AD, participating in the occurrence and development of AD.
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Affiliation(s)
- H Y Tang
- Dermatology and Cosmetic Center, the Third Affiliated Hospital of Chongqing Medical University, Chongqing 400110, China
| | - X Jiang
- Dermatology and Cosmetic Center, the Third Affiliated Hospital of Chongqing Medical University, Chongqing 400110, China
| | - D J Zhang
- Dermatology and Cosmetic Center, the Third Affiliated Hospital of Chongqing Medical University, Chongqing 400110, China
| | - B T Chen
- Department of Dermatology and Venereology, Chongqing University Three Gorges Hospital, Chongqing 404000, China
| | - T Qian
- Dermatology and Cosmetic Center, the Third Affiliated Hospital of Chongqing Medical University, Chongqing 400110, China
| | - Z Q Yao
- Dermatology and Cosmetic Center, the Third Affiliated Hospital of Chongqing Medical University, Chongqing 400110, China
| | - X Yang
- Dermatology and Cosmetic Center, the Third Affiliated Hospital of Chongqing Medical University, Chongqing 400110, China
| | - F B Yu
- Dermatology and Cosmetic Center, the Third Affiliated Hospital of Chongqing Medical University, Chongqing 400110, China
| | - T T Song
- Dermatology and Cosmetic Center, the Third Affiliated Hospital of Chongqing Medical University, Chongqing 400110, China
| | - F Hao
- Dermatology and Cosmetic Center, the Third Affiliated Hospital of Chongqing Medical University, Chongqing 400110, China
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Jiang X, Zhao JH, Tang HY, Wang RJ, Zhang DJ, Wang Y, Li H, Hao F. [Multicenter clinical epidemiological analysis of elderly atopic dermatitis in China]. Zhonghua Yi Xue Za Zhi 2023; 103:2495-2501. [PMID: 37650195 DOI: 10.3760/cma.j.cn112137-20230517-00814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Objective: To investigate and analyze the clinical features of elderly atopic dermatitis (AD) in China. Methods: Based on the National Clinical Research and Homogeneous Diagnosis and Treatment Project for Type 2 Inflammation Dermatosis, a total of 2 281 patients aged 65 years or older were enrolled from 172 grade A tertiary hospitals who were diagnosed as atopic dermatitis from June 2021 to February 2023, and their demographics, clinical feature, and disease severity, etc. were collected. Elderly AD patients were divided into groups based on gender, history of allergic diseases (with or without a personal or family history of allergic diseases), and clinical features (site of onset, AD signs) and scales were compared within the groups. Median (Q1, Q3) was used for quantitative data. Results: The age of 2 281 elderly AD patients was 73.02 (68.83, 79.62) years old, among whom there were 1 649 males (72.29%) and 632 females (27.71%). A total of 2 244 cases were recorded with the information of the onset stage, of whom 1 713 cases (76.34%) occurred in the elderly stage. A total of 2 136 cases were recorded with the information of personal or family history of allergic diseases, of which 1 076 cases (50.37%) had a personal or family history of allergic diseases, and 1 060 (49.63%) had no history of allergic diseases. Skin lesions were predominantly involved in the waist, back, buttocks, and AD signs were mainly eczema-like skin lesions on the cheek and/or scalp and/or limb extension. Patients with moderate to severe AD accounted for 60.58% (1 327 cases), moderate to severe itching accounted for 81.32% (1 781 cases). Patients with anxiety and depression accounted for 46.14% (1 011 cases) and 39.27% (860 cases), respectively. Men had a higher EASI score than women [9.67 (4.77, 19.28) vs 8.45 (3.98, 17.11), P=0.040]. EASI, HADS-anxiety and WI-NRS scores were higher in patients with history of allergic diseases than those without allergy history [ (9.79 (4.84, 19.96) vs 8.96 (4.05, 18.31), P=0.015; 7.22 (3.49, 10.00) vs 6.81 (3.12, 9.33), P=0.012; 7.64 (5.62, 9.07) vs 7.38 (5.35, 8.91), P=0.036]. Conclusion: Elderly AD patients have their own exclusive clinical manifestations, and the understanding of these characteristics is beneficial for guiding clinical development of targeted management plans. Elderly AD patients are mostly senile onset, and male patients are more than female patients, skin lesions are mainly distributed on the extended side, and the disease burden is heavy.
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Affiliation(s)
- X Jiang
- Dermatology and Plastic Surgery Center, the Third Affiliated Hospital of Chongqing Medical University, Chongqing 401120, China
| | - J H Zhao
- Department of Dermatology and Venerology, Peking University First Hospital & National Clinical Research Center for Skin and Immune Disease & Beijing Key Laboratory of Molecular Diagnosis of Dermatoses & NMPA Key Laboratory for Quality Control and Evaluation of Cosmetics, Beijing 100034, China
| | - H Y Tang
- Dermatology and Plastic Surgery Center, the Third Affiliated Hospital of Chongqing Medical University, Chongqing 401120, China
| | - R J Wang
- Department of Dermatology and Venerology, Peking University First Hospital & National Clinical Research Center for Skin and Immune Disease & Beijing Key Laboratory of Molecular Diagnosis of Dermatoses & NMPA Key Laboratory for Quality Control and Evaluation of Cosmetics, Beijing 100034, China
| | - D J Zhang
- Dermatology and Plastic Surgery Center, the Third Affiliated Hospital of Chongqing Medical University, Chongqing 401120, China
| | - Y Wang
- Department of Dermatology and Venerology, Peking University First Hospital & National Clinical Research Center for Skin and Immune Disease & Beijing Key Laboratory of Molecular Diagnosis of Dermatoses & NMPA Key Laboratory for Quality Control and Evaluation of Cosmetics, Beijing 100034, China
| | - H Li
- Department of Dermatology and Venerology, Peking University First Hospital & National Clinical Research Center for Skin and Immune Disease & Beijing Key Laboratory of Molecular Diagnosis of Dermatoses & NMPA Key Laboratory for Quality Control and Evaluation of Cosmetics, Beijing 100034, China
| | - F Hao
- Dermatology and Plastic Surgery Center, the Third Affiliated Hospital of Chongqing Medical University, Chongqing 401120, China
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Teh KJ, Tang HY, Lim LS, Pung HS, Gan SY, Lai NS. Mini review: surveillance of Lyme borreliosis in Southeast Asia and method of diagnosis. Eur Rev Med Pharmacol Sci 2023; 27:4378-4385. [PMID: 37259718 DOI: 10.26355/eurrev_202305_32443] [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: 06/02/2023]
Abstract
Lyme borreliosis is caused by the Gram-negative spirochetes Borrelia spp., particularly Borrelia burgdorferi sensu lato complex. The disease is transmitted through the bite of the infected black-legged Ixodes tick. Lyme borreliosis extensively occurs in the Northern Hemisphere, mainly in the United States. Lyme borreliosis cases are also detected in Asian countries including Korea, Nepal, China, Taiwan, and Japan. However, there is an inadequate understanding of Lyme borreliosis in the Southeast Asian region. Hence, this review aims to provide a brief update on the prevalence of Lyme borreliosis infection in Southeast Asia based on the latest literature on this issue. Lyme borreliosis has been discovered in human serum in Indonesia, Malaysia, and Singapore. The human serum samples were mainly examined with ELISA test using Borrelia spp. IgG and IgM antigens. Borrelia spp. also has been detected in ticks found on host animals such as Sundamys muelleri and Python in Malaysia, Thailand, and Laos. Polymerase chain reaction (PCR) is used to detect the presence of Borrelia DNAs in the samples. The published studies have demonstrated that Borrelia spp. exists in Southeast Asia and although the incidence is relatively low, it is believed that Lyme disease cases are under-reported.
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Affiliation(s)
- K J Teh
- Medical Innovation Ventures Sdn, Bhd (Mediven), Bayan Lepas, Malaysia.
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Huang YH, Wu YH, Tang HY, Chen ST, Wang CC, Ho WJ, Lin YH, Liu GH, Lin PY, Lo CJ, Yeh YM, Cheng ML. Gut Microbiota and Bile Acids Mediate the Clinical Benefits of YH1 in Male Patients with Type 2 Diabetes Mellitus: A Pilot Observational Study. Pharmaceutics 2022; 14:pharmaceutics14091857. [PMID: 36145605 PMCID: PMC9505101 DOI: 10.3390/pharmaceutics14091857] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 08/30/2022] [Accepted: 08/31/2022] [Indexed: 11/16/2022] Open
Abstract
Our previous clinical trial showed that a novel concentrated herbal extract formula, YH1 (Rhizoma coptidis and Shen-Ling-Bai-Zhu-San), improved blood glucose and lipid control. This pilot observational study investigated whether YH1 affects microbiota, plasma, and fecal bile acid (BA) compositions in ten untreated male patients with type 2 diabetes (T2D), hyperlipidemia, and a body mass index ≥ 23 kg/m2. Stool and plasma samples were collected for microbiome, BA, and biochemical analyses before and after 4 weeks of YH1 therapy. As previous studies found, the glycated albumin, 2-h postprandial glucose, triglycerides, total cholesterol, and low-density lipoprotein cholesterol levels were significantly improved after YH1 treatment. Gut microbiota revealed an increased abundance of the short-chain fatty acid-producing bacteria Anaerostipes and Escherichia/Shigella. Furthermore, YH1 inhibited specific phylotypes of bile salt hydrolase-expressing bacteria, including Parabacteroides, Bifidobacterium, and Bacteroides caccae. Stool tauro-conjugated BA levels increased after YH1 treatment. Plasma total BAs and 7α-hydroxy-4-cholesten-3-one (C4), a BA synthesis indicator, were elevated. The reduced deconjugation of BAs and increased plasma conjugated BAs, especially tauro-conjugated BAs, led to a decreased glyco- to tauro-conjugated BA ratio and reduced unconjugated secondary BAs. These results suggest that YH1 ameliorates T2D and hyperlipidemia by modulating microbiota constituents that alter fecal and plasma BA compositions and promote liver cholesterol-to-BA conversion and glucose homeostasis.
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Affiliation(s)
- Yueh-Hsiang Huang
- Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Taipei 105, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan 333, Taiwan
- School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Yi-Hong Wu
- Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Taipei 105, Taiwan
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan 333, Taiwan
- School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Hsiang-Yu Tang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan
| | - Szu-Tah Chen
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
| | - Chih-Ching Wang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
| | - Wan-Jing Ho
- Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
| | - Yi-Hsuan Lin
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
| | - Geng-Hao Liu
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan 333, Taiwan
- School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
| | - Pei-Yeh Lin
- Department of Medical Nutrition Therapy, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chi-Jen Lo
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan
| | - Yuan-Ming Yeh
- Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
- Correspondence: (Y.-M.Y.); (M.-L.C.)
| | - Mei-Ling Cheng
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Correspondence: (Y.-M.Y.); (M.-L.C.)
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Han JK, Li B, Zhao CJ, Liu SH, Tang HY, Yan Z. [Analysis of current status and influencing factors of inflammatory factors among electrical workers in Hainan province]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022; 40:586-591. [PMID: 36052588 DOI: 10.3760/cma.j.cn121094-20211130-00588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To analyze the level and influence factors of inflammatory factors among electrical workers in Hainan Province. Methods: A total of 509 electrical workers were selected as the research subjects with random cluster sampling in September 2020. Basic information was collected by questionnaire, the serum IL-6, IL-8 and TNF-α levels of the subjects were detected by Luminex.Mann-Whitney U test and Kruskal-wallis H test were used for univariate analysis. Ordinal logistic regression analysis was used for potential influencing factors of the level of inflammatory factors. Results: The median concentrations of IL-6, IL-8 and TNF-α in serum were 2.78, 9.77 and 8.18 pg/ml. Compared with women, male was a risk factor for the increase of IL-6 levels (OR=1.80, 95%CI: 1.08~3.00, P=0.024) . Compared with 51-60 years old, 21-31 years old (OR=0.27, 95%CI: 0.18~0.42, P<0.001) , 31-41 years old (OR=0.27, 95%CI: 0.17~0.43, P<0.001) and 41-51 years old (OR=0.64, 95%CI: 0.41~0.99, P=0.043) were protective factors for the increase of IL-8 level. Compared with day shift workers, shift work was a risk factor for the increase of IL-8 level (OR=1.73, 95%CI: 1.21~2.48, P=0.003) . Compared with women, male was a risk factor for the increase of TNF-α levels (OR=2.87, 95%CI: 1.70~4.86, P<0.001) . Compared with workers who exposed to 7 or more occupational hazard factors, exposed to 1~3 (OR=0.53, 95%CI: 0.30~0.92, P=0.024) occupational hazard factors were protective factors for the increase of TNF-α levels. Conclusion: The level of inflammatory factors was related to sex, age, work system and occupational environment, which can provide basic data for follow-up research on occupational population.
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Affiliation(s)
- J K Han
- School of Public Health, Hainan Medical University, Haikou 571199, China
| | - B Li
- Hainan Center for Disease Control and Prevention, Haikou 570203, China
| | - C J Zhao
- School of Public Health, Hainan Medical University, Haikou 571199, China
| | - S H Liu
- School of Public Health, Hainan Medical University, Haikou 571199, China
| | - H Y Tang
- School of Public Health, Hainan Medical University, Haikou 571199, China
| | - Z Yan
- School of Public Health, Hainan Medical University, Haikou 571199, China
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Chen KH, Chou LF, Hung CC, Tang HY, Cheng ML, Yang HY, Hsu HH, Tian YC, Yang CW. Integrated Metabolomic and Transcriptomic Analysis of Acute Kidney Injury Caused by Leptospira Infection. Pathogens 2022; 11:pathogens11070764. [PMID: 35890009 PMCID: PMC9316537 DOI: 10.3390/pathogens11070764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 06/06/2022] [Accepted: 07/01/2022] [Indexed: 11/16/2022] Open
Abstract
Renal leptospirosis caused by leptospiral infection is characterised by tubulointerstitial nephritis and tubular dysfunction, resulting in acute and chronic kidney injury. Metabolomic and transcriptomic data from a murine model of Leptospira infection were analysed to determine whether metabolomic data from urine were associated with transcriptome changes relevant to kidney injury caused by Leptospira infection. Our findings revealed that 37 metabolites from the urine of L. interrogans-infected mice had significantly different concentrations than L. biflexa-infected and non-infected control mice. Of these, urinary L-carnitine and acetyl-L-carnitine levels were remarkably elevated in L. interrogans-infected mice. Using an integrated pathway analysis, we found that L-carnitine and acetyl-L-carnitine were involved in metabolic pathways such as fatty acid activation, the mitochondrial L-carnitine shuttle pathway, and triacylglycerol biosynthesis that were enriched in the renal tissues of the L. interrogans-infected mice. This study highlights that L-carnitine and acetyl-L-carnitine are implicated in leptospiral infection-induced kidney injury, suggesting their potential as metabolic modulators.
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Affiliation(s)
- Kuan-Hsing Chen
- Kidney Research Center, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (K.-H.C.); (L.-F.C.); (C.-C.H.); (H.-Y.Y.); (H.-H.H.); (Y.-C.T.)
- Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; (H.-Y.T.); (M.-L.C.)
- Metabolomics Core Laboratory, Chang Gung University, Taoyuan 333, Taiwan
| | - Li-Fang Chou
- Kidney Research Center, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (K.-H.C.); (L.-F.C.); (C.-C.H.); (H.-Y.Y.); (H.-H.H.); (Y.-C.T.)
| | - Cheng-Chieh Hung
- Kidney Research Center, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (K.-H.C.); (L.-F.C.); (C.-C.H.); (H.-Y.Y.); (H.-H.H.); (Y.-C.T.)
| | - Hsiang-Yu Tang
- Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; (H.-Y.T.); (M.-L.C.)
- Metabolomics Core Laboratory, Chang Gung University, Taoyuan 333, Taiwan
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Clinical Phenome Center, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan
| | - Mei-Ling Cheng
- Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; (H.-Y.T.); (M.-L.C.)
- Metabolomics Core Laboratory, Chang Gung University, Taoyuan 333, Taiwan
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Clinical Phenome Center, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan
| | - Huang-Yu Yang
- Kidney Research Center, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (K.-H.C.); (L.-F.C.); (C.-C.H.); (H.-Y.Y.); (H.-H.H.); (Y.-C.T.)
| | - Hsiang-Hao Hsu
- Kidney Research Center, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (K.-H.C.); (L.-F.C.); (C.-C.H.); (H.-Y.Y.); (H.-H.H.); (Y.-C.T.)
| | - Ya-Chung Tian
- Kidney Research Center, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (K.-H.C.); (L.-F.C.); (C.-C.H.); (H.-Y.Y.); (H.-H.H.); (Y.-C.T.)
| | - Chih-Wei Yang
- Kidney Research Center, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (K.-H.C.); (L.-F.C.); (C.-C.H.); (H.-Y.Y.); (H.-H.H.); (Y.-C.T.)
- Correspondence:
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Kuo WL, Tseng LL, Chang CC, Chen CJ, Cheng ML, Cheng HH, Wu MJ, Chen YL, Chang RT, Tang HY, Hsu YC, Lin WJ, Kao CY, Hsieh WP, Kung HJ, Wang WC. Prognostic Significance of O-GlcNAc and PKM2 in Hormone Receptor-Positive and HER2-Nonenriched Breast Cancer. Diagnostics (Basel) 2021; 11:diagnostics11081460. [PMID: 34441396 PMCID: PMC8392504 DOI: 10.3390/diagnostics11081460] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 08/10/2021] [Accepted: 08/10/2021] [Indexed: 12/24/2022] Open
Abstract
Predictive metabolic biomarkers for the recurrent luminal breast cancer (BC) with hormone receptor (HR)-positive and human epidermal growth factor receptor type 2 (HER2)-negative are lacking. High levels of O-GlcNAcylation (O-GlcNAc) and pyruvate kinase isoenzyme M2 (PKM2) are associated with malignancy in BC; however, the association with the recurrence risk remains unclear. We first conduct survival analysis by using the METABRIC dataset to assess the correlation of PKM2 expression with BC clinical outcomes. Next, patients with HR+/HER2- luminal BC were recruited for PKM2/O-GlcNAc testing. Logistic regression and receiver operating characteristic curve analysis were performed to evaluate the 10-year DFS predicted outcome. Survival analysis of the METABRIC dataset revealed that high expression of PKM2 was significantly associated with worse overall survival in luminal BC. The high expression of O-GlcNAc or PKM2 was a significant independent marker for poor 10-year DFS using immunohistochemical analysis. The PKM2 or O-GlcNAc status was a significant predictor of DFS, with the combination of PKM2–O-GlcNAc status and T stage greatly enhancing the predictive outcome potential. In summary, O-GlcNAc, PKM2, and T stage serve as good prognostic discriminators in HR+/HER2− luminal BC.
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Affiliation(s)
- Wen-Ling Kuo
- Division of Breast Surgery, General Surgery, Department of Surgery, Chang Gung Memorial Hospital Linkou Medical Center, Taoyuan City 33305, Taiwan;
| | - Lin-Lu Tseng
- Institute of Molecular and Cellular Biology and Department of Life Sciences, National Tsing-Hua University, Hsinchu City 30013, Taiwan; (L.-L.T.); (H.-H.C.); (M.-J.W.); (Y.-L.C.)
| | - Che-Chang Chang
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei City 11031, Taiwan; (C.-C.C.); (R.-T.C.)
| | - Chih-Jung Chen
- Department of Pathology and Laboratory Medicine, Taichung Veterans General Hospital, Taichung City 40705, Taiwan; (C.-J.C.); (Y.-C.H.)
- School of Medicine, Chung Shan Medical University, Taichung City 40201, Taiwan
| | - Mei-Ling Cheng
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City 33302, Taiwan;
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan;
| | - Hsin-Hung Cheng
- Institute of Molecular and Cellular Biology and Department of Life Sciences, National Tsing-Hua University, Hsinchu City 30013, Taiwan; (L.-L.T.); (H.-H.C.); (M.-J.W.); (Y.-L.C.)
| | - Meng-Jen Wu
- Institute of Molecular and Cellular Biology and Department of Life Sciences, National Tsing-Hua University, Hsinchu City 30013, Taiwan; (L.-L.T.); (H.-H.C.); (M.-J.W.); (Y.-L.C.)
| | - Yu-Lun Chen
- Institute of Molecular and Cellular Biology and Department of Life Sciences, National Tsing-Hua University, Hsinchu City 30013, Taiwan; (L.-L.T.); (H.-H.C.); (M.-J.W.); (Y.-L.C.)
| | - Ruei-Ting Chang
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei City 11031, Taiwan; (C.-C.C.); (R.-T.C.)
| | - Hsiang-Yu Tang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan;
| | - Yong-Chen Hsu
- Department of Pathology and Laboratory Medicine, Taichung Veterans General Hospital, Taichung City 40705, Taiwan; (C.-J.C.); (Y.-C.H.)
| | - Wen-Jye Lin
- Immunology Research Center, National Health Research Institutes, Miaoli County 35053, Taiwan; (W.-J.L.); (C.-Y.K.)
| | - Cheng-Yuan Kao
- Immunology Research Center, National Health Research Institutes, Miaoli County 35053, Taiwan; (W.-J.L.); (C.-Y.K.)
| | - Wen-Ping Hsieh
- Institute of Statistics, National Tsing Hua University, Hsinchu City 30013, Taiwan;
| | - Hsing-Jien Kung
- Graduate Institute of Cancer Biology and Drug Discovery, Taipei Medical University, Taipei City 11031, Taiwan;
- Department of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, University of California Davis Cancer Centre, Sacramento, CA 95817, USA
| | - Wen-Ching Wang
- Institute of Molecular and Cellular Biology and Department of Life Sciences, National Tsing-Hua University, Hsinchu City 30013, Taiwan; (L.-L.T.); (H.-H.C.); (M.-J.W.); (Y.-L.C.)
- Correspondence: ; Tel.: +886-35742766
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Ma H, Zhang J, Zhou L, Wen S, Tang HY, Jiang B, Zhang F, Suleman M, Sun D, Chen A, Zhao W, Lin F, Tsau MT, Shih LM, Xie C, Li X, Lin D, Hung LM, Cheng ML, Li Q. c-Src Promotes Tumorigenesis and Tumor Progression by Activating PFKFB3. Cell Rep 2021; 30:4235-4249.e6. [PMID: 32209481 DOI: 10.1016/j.celrep.2020.03.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 01/29/2020] [Accepted: 03/02/2020] [Indexed: 02/06/2023] Open
Abstract
Reprogramming of glucose metabolism is a key event in tumorigenesis and progression. Here, we show that active c-Src stimulates glycolysis by phosphorylating (Tyr194) and activating PFKFB3, a key enzyme that boosts glycolysis by producing fructose-2,6-bisphosphate and activating PFK1. Increased glycolysis intermediates replenish non-oxidative pentose phosphate pathway (PPP) and serine pathway for biosynthesis of cancer cells. PFKFB3 knockout (KO) cells and their counterpart reconstituted with PFKFB3-Y194F show comparably impaired abilities for proliferation, migration, and xenograft formation. Furthermore, PFKFB3-Y194F knockin mice show impaired glycolysis and, mating of these mice with APCmin/+ mice attenuates spontaneous colon cancer formation in APCmin/+ mice. In summary, we identify a specific mechanism by which c-Src mediates glucose metabolism to meet cancer cells' requirements for maximal biosynthesis and proliferation. The PFKFB3-Tyr194 phosphorylation level highly correlates with c-Src activity in clinical tumor samples, indicating its potential as an evaluation for tumor prognosis.
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Affiliation(s)
- Huanhuan Ma
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Jia Zhang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Lin Zhou
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Shixiong Wen
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Hsiang-Yu Tang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan
| | - Bin Jiang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Fengqiong Zhang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Muhammad Suleman
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Dachao Sun
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Ai Chen
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Wentao Zhao
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Furong Lin
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Ming-Tong Tsau
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan
| | - Lu-Min Shih
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan
| | - Changchuan Xie
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Xiaotong Li
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Donghai Lin
- Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Li-Man Hung
- Department and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan 33302, Taiwan; Center for Healthy and Aging Research, Chang Gung University, Taoyuan City 33302, Taiwan; Kidney Research Center, Chang Gung Memorial Hospital, Taoyuan City 33302, Taiwan.
| | - Mei-Ling Cheng
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan; Department and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan 33302, Taiwan; Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Tao-Yuan, Taiwan.
| | - Qinxi Li
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China; Cancer Research Center of Xiamen University, Xiamen, Fujian 361102, China.
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Huang YC, Cheng ML, Tang HY, Huang CY, Chen KM, Wang JS. Eccentric Cycling Training Improves Erythrocyte Antioxidant and Oxygen Releasing Capacity Associated with Enhanced Anaerobic Glycolysis and Intracellular Acidosis. Antioxidants (Basel) 2021; 10:antiox10020285. [PMID: 33668606 PMCID: PMC7918820 DOI: 10.3390/antiox10020285] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/09/2021] [Accepted: 02/10/2021] [Indexed: 11/20/2022] Open
Abstract
The antioxidant capacity of erythrocytes protects individuals against the harmful effects of oxidative stress. Despite improved hemodynamic efficiency, the effect of eccentric cycling training (ECT) on erythrocyte antioxidative capacity remains unclear. This study investigates how ECT affects erythrocyte antioxidative capacity and metabolism in sedentary males. Thirty-six sedentary healthy males were randomly assigned to either concentric cycling training (CCT, n = 12) or ECT (n = 12) at 60% of the maximal workload for 30 min/day, 5 days/week for 6 weeks or to a control group (n = 12) that did not receive an exercise intervention. A graded exercise test (GXT) was performed before and after the intervention. Erythrocyte metabolic characteristics and O2 release capacity were determined by UPLC-MS and high-resolution respirometry, respectively. An acute GXT depleted Glutathione (GSH), accumulated Glutathione disulfide (GSSG), and elevated the GSSG/GSH ratio, whereas both CCT and ECT attenuated the extent of the elevated GSSG/GSH ratio caused by a GXT. Moreover, the two exercise regimens upregulated glycolysis and increased glucose consumption and lactate production, leading to intracellular acidosis and facilitation of O2 release from erythrocytes. Both CCT and ECT enhance antioxidative capacity against severe exercise-evoked circulatory oxidative stress. Moreover, the two exercise regimens activate erythrocyte glycolysis, resulting in lowered intracellular pH and enhanced O2 released from erythrocytes.
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Affiliation(s)
- Yu-Chieh Huang
- Department of Physical Therapy, College of Medical and Health Science, Asia University, Taichung 413, Taiwan;
| | - Mei-Ling Cheng
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; (M.-L.C.); (H.-Y.T.)
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Hsiang-Yu Tang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; (M.-L.C.); (H.-Y.T.)
| | - Chi-Yao Huang
- Healthy Aging Research Center, Graduate Institute of Rehabilitation Science, Medical Collage, Chang Gung University, Taoyuan 333, Taiwan; (C.-Y.H.); (K.-M.C.)
| | - Kuan-Ming Chen
- Healthy Aging Research Center, Graduate Institute of Rehabilitation Science, Medical Collage, Chang Gung University, Taoyuan 333, Taiwan; (C.-Y.H.); (K.-M.C.)
| | - Jong-Shyan Wang
- Healthy Aging Research Center, Graduate Institute of Rehabilitation Science, Medical Collage, Chang Gung University, Taoyuan 333, Taiwan; (C.-Y.H.); (K.-M.C.)
- Heart Failure Center, Department of Physical Medicine and Rehabilitation, Keelung Chang Gung Memorial Hospital, Keelung 204, Taiwan
- Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
- Correspondence: ; Tel.: +886-3-2118800 (ext. 5748); Fax: +886+886-3-2118700
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Cheng CW, Liu MH, Tang HY, Cheng ML, Wang CH. Factors associated with elevated plasma phenylalanine in patients with heart failure. Amino Acids 2021; 53:149-157. [PMID: 33398528 DOI: 10.1007/s00726-020-02933-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 12/16/2020] [Indexed: 01/08/2023]
Abstract
Elevated phenylalanine has been observed in patients with advanced heart failure (HF) and in community cohorts at risk of HF, and has been shown to have prognostic value. This study aimed to explore the factors associated with elevated phenylalanine in HF patients. Mass spectrometry was performed on blood from 669 participants, including 75 normal controls and 594 HF patients (stages A, B, and C). We measured phenylalanine and associated degradation products on the catecholamine pathway, C-reactive protein, valerylcarnitine, methionine sulfoxide, estimated glomerular filtration rate (eGFR), and B-type natriuretic peptide. Longitudinal analysis was conducted on 61 stage C HF patients who had recovered systolic function after 1 year. Phenylalanine and tyrosine levels increased from normal through stages A, B and C. Cross-sectional analysis in patients at stage C showed that phenylalanine levels were related to total bilirubin, eGFR, valerylcarnitine, methionine sulfoxide, C-reactive protein, and male gender. Longitudinal analysis in the patients at stage C with recovered systolic function after 1 year revealed that phenylalanine, tyrosine, methionine sulfoxide, total bilirubin, and C-reactive protein levels significantly decreased from baseline to 12 months. Based on a generalized estimating equations analysis model with time interaction considered, the only significant factor associated with changes in phenylalanine was changes in C-reactive protein concentrations from baseline to 12 months [B (coefficient) = 0.81, P < 0.001] after adjusting for methionine sulfoxide and total bilirubin levels. In conclusion, phenylalanine levels respond sensitively to HF improvement. Our findings suggest that inflammation plays a pivotal role in the elevation of phenylalanine levels in patients with HF.
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Affiliation(s)
- Chi-Wen Cheng
- Division of Cardiology, Department of Internal Medicine, Heart Failure Research Center, Chang Gung Memorial Hospital, 222 Mai Chin Road, Keelung, Taiwan.,Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Min-Hui Liu
- Division of Cardiology, Department of Internal Medicine, Heart Failure Research Center, Chang Gung Memorial Hospital, 222 Mai Chin Road, Keelung, Taiwan.,Department of Nursing, Ching Kuo Institute of Management and Health, Keelung, Taiwan
| | - Hsiang-Yu Tang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Mei-Ling Cheng
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan.,Department and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Clinical Metabolomics Core Laboratory, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Chao-Hung Wang
- Division of Cardiology, Department of Internal Medicine, Heart Failure Research Center, Chang Gung Memorial Hospital, 222 Mai Chin Road, Keelung, Taiwan. .,Chang Gung University College of Medicine, Taoyuan, Taiwan.
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16
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Lo CJ, Ko YS, Chang SW, Tang HY, Huang CY, Huang YC, Ho HY, Lin CM, Cheng ML. Metabolic signatures of muscle mass loss in an elderly Taiwanese population. Aging (Albany NY) 2020; 13:944-956. [PMID: 33410783 PMCID: PMC7834982 DOI: 10.18632/aging.202209] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 10/05/2020] [Indexed: 12/25/2022]
Abstract
To identify the association between metabolites and muscle mass in 305 elderly Taiwanese subjects, we conducted a multivariate analysis of 153 plasma samples. Based on appendicular skeletal muscle mass index (ASMI) quartiles, female and male participants were divided into four groups. Quartile 4 (Men: 5.67±0.35, Women: 4.70±0.32 Kg/m2) and quartile 1 (Men: 7.60±0.29, Women: 6.56±0.53 Kg/m2) represented low muscle mass and control groups, respectively. After multivariable adjustment, except for physical function, we found that blood urea nitrogen, creatinine, and age were associated with ASMI in men. However, only triglyceride level was related to ASMI in women. The multiple logistic regression models were used to analyze in each baseline characteristic and metabolite concentration. After the adjustment, we identify amino acid-related metabolites and show that glutamate levels in women and alpha-aminoadipate, Dopa, and citrulline/ornithine levels in men are gender-specific metabolic signatures of muscle mass loss.
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Affiliation(s)
- Chi-Jen Lo
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan
| | - Yu-Shien Ko
- Division of Cardiology, Chang Gung Memorial Hospital, Taipei 105, Taiwan.,College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Su-Wei Chang
- Clinical Informatics and Medical Statistics Research Center, Chang Gung University, Taoyuan 333, Taiwan
| | - Hsiang-Yu Tang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan
| | - Cheng-Yu Huang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan
| | - Yu-Chen Huang
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.,Department of Thoracic Medicine, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Hung-Yao Ho
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan.,Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.,Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chih-Ming Lin
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.,Division of Internal Medicine, Chang Gung Memorial Hospital, Taipei 105, Taiwan.,Department of Health Management, Chang Gung Health and Culture Village, Taoyuan 333, Taiwan
| | - Mei-Ling Cheng
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan.,Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan.,Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
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17
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Tang HY, Wang CH, Ho HY, Lin JF, Lo CJ, Huang CY, Cheng ML. Characteristic of Metabolic Status in Heart Failure and Its Impact in Outcome Perspective. Metabolites 2020; 10:E437. [PMID: 33138215 PMCID: PMC7692076 DOI: 10.3390/metabo10110437] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/20/2020] [Accepted: 10/28/2020] [Indexed: 12/30/2022] Open
Abstract
Metabolic alterations have been documented in peripheral tissues in heart failure (HF). Outcomes might be improved by early identification of risk. However, the prognostic information offered is still far from enough. We hypothesized that plasma metabolic profiling potentially provides risk stratification for HF patients. Of 61 patients hospitalized due to acute decompensated HF, 31 developed HF-related events in one year after discharge (Event group), and the other 30 patients did not (Non-event group). The plasma collected during hospital admission was analyzed by an ultra-high performance liquid chromatography time-of-flight mass spectrometry (UPLC-TOFMS)-based metabolomic approach. The orthogonal projection to latent structure discriminant analysis (OPLS-DA) reveals that the metabolomics profile is able to distinguish between events in HF. Levels of 19 metabolites including acylcarnitines, lysophospholipids, dimethylxanthine, dimethyluric acid, tryptophan, phenylacetylglutamine, and hypoxanthine are significantly different between patients with and without event (p < 0.05). Established risk prediction models of event patients by using receiver operating characteristics analysis reveal that the combination of tetradecenoylcarnitine, dimethylxanthine, phenylacetylglutamine, and hypoxanthine has better discrimination than B-type natriuretic peptide (BNP) (AUC 0.871 and 0.602, respectively). These findings suggest that metabolomics-derived metabolic profiling have the potential of identifying patients with high risk of HF-related events and provide insights related to HF outcome.
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Affiliation(s)
- Hsiang-Yu Tang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan; (H.-Y.T.); (J.-F.L.); (C.-J.L.); (C.-Y.H.)
| | - Chao-Hung Wang
- Heart Failure Research Center, Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Keelung City 20401, Taiwan;
| | - Hung-Yao Ho
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan City 33302, Taiwan;
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan City 33302, Taiwan
| | - Jui-Fen Lin
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan; (H.-Y.T.); (J.-F.L.); (C.-J.L.); (C.-Y.H.)
| | - Chi-Jen Lo
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan; (H.-Y.T.); (J.-F.L.); (C.-J.L.); (C.-Y.H.)
| | - Cheng-Yu Huang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan; (H.-Y.T.); (J.-F.L.); (C.-J.L.); (C.-Y.H.)
| | - Mei-Ling Cheng
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan City 33302, Taiwan; (H.-Y.T.); (J.-F.L.); (C.-J.L.); (C.-Y.H.)
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan City 33302, Taiwan
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City 33302, Taiwan
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18
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Lin WC, Chakraborty A, Huang SC, Wang PY, Hsieh YJ, Chien KY, Lee YH, Chang CC, Tang HY, Lin YT, Tung CS, Luo JD, Chen TW, Lin TY, Cheng ML, Chen YT, Yeh CT, Liu JL, Sung LY, Shiao MS, Yu JS, Chang YS, Pai LM. Histidine-Dependent Protein Methylation Is Required for Compartmentalization of CTP Synthase. Cell Rep 2019; 24:2733-2745.e7. [PMID: 30184506 DOI: 10.1016/j.celrep.2018.08.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [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: 11/03/2017] [Revised: 05/11/2018] [Accepted: 08/03/2018] [Indexed: 12/13/2022] Open
Abstract
CTP synthase (CTPS) forms compartmentalized filaments in response to substrate availability and environmental nutrient status. However, the physiological role of filaments and mechanisms for filament assembly are not well understood. Here, we provide evidence that CTPS forms filaments in response to histidine influx during glutamine starvation. Tetramer conformation-based filament formation restricts CTPS enzymatic activity during nutrient deprivation. CTPS protein levels remain stable in the presence of histidine during nutrient deprivation, followed by rapid cell growth after stress relief. We demonstrate that filament formation is controlled by methylation and that histidine promotes re-methylation of homocysteine by donating one-carbon intermediates to the cytosolic folate cycle. Furthermore, we find that starvation stress and glutamine deficiency activate the GCN2/ATF4/MTHFD2 axis, which coordinates CTPS filament formation. CTPS filament formation induced by histidine-mediated methylation may be a strategy used by cancer cells to maintain homeostasis and ensure a growth advantage in adverse environments.
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Affiliation(s)
- Wei-Cheng Lin
- Department of Biochemistry and Molecular Biology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Molecular Medicine Research Center, Chang Gung University, Taoyuan 33302, Taiwan
| | - Archan Chakraborty
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Shih-Chia Huang
- Genomics Research Center, Academia Sinica, Taipei 11529, Taiwan
| | - Pei-Yu Wang
- Department of Biochemistry and Molecular Biology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Molecular Medicine Research Center, Chang Gung University, Taoyuan 33302, Taiwan
| | - Ya-Ju Hsieh
- Molecular Medicine Research Center, Chang Gung University, Taoyuan 33302, Taiwan
| | - Kun-Yi Chien
- Department of Biochemistry and Molecular Biology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Clinical Proteomics Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Yen-Hsien Lee
- Department of Biochemistry and Molecular Biology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Chia-Chun Chang
- Institute of Biotechnology, National Taiwan University, Taipei 106, Taiwan
| | - Hsiang-Yu Tang
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Healthy Aging Research Center, Chang Gung University, Taoyuan 33302, Taiwan
| | - Yu-Tsun Lin
- Department of Biochemistry and Molecular Biology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Chang-Shung Tung
- Theoretical Biology and Biophysics Group, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Ji-Dung Luo
- Molecular Medicine Research Center, Chang Gung University, Taoyuan 33302, Taiwan; Bioinformatics Core Laboratory, Chang Gung University, Taoyuan 33302, Taiwan
| | - Ting-Wen Chen
- Molecular Medicine Research Center, Chang Gung University, Taoyuan 33302, Taiwan; Departments of Otolaryngology-Head & Neck Surgery, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Tzu-Yang Lin
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei 11529, Taiwan; Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 114, Taiwan
| | - Mei-Ling Cheng
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Healthy Aging Research Center, Chang Gung University, Taoyuan 33302, Taiwan; Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Yi-Ting Chen
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Molecular Medicine Research Center, Chang Gung University, Taoyuan 33302, Taiwan; Kidney Research Center, Department of Nephrology, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Chau-Ting Yeh
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Liver Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Ji-Long Liu
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3PT, UK; School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Li-Ying Sung
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei 11529, Taiwan; Institute of Biotechnology, National Taiwan University, Taipei 106, Taiwan
| | - Ming-Shi Shiao
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Healthy Aging Research Center, Chang Gung University, Taoyuan 33302, Taiwan
| | - Jau-Song Yu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Department of Biochemistry and Molecular Biology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Molecular Medicine Research Center, Chang Gung University, Taoyuan 33302, Taiwan; Liver Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Yu-Sun Chang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Molecular Medicine Research Center, Chang Gung University, Taoyuan 33302, Taiwan
| | - Li-Mei Pai
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Department of Biochemistry and Molecular Biology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Molecular Medicine Research Center, Chang Gung University, Taoyuan 33302, Taiwan; Liver Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan.
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19
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Weng WC, Huang WY, Tang HY, Cheng ML, Chen KH. The Differences of Serum Metabolites Between Patients With Early-Stage Alzheimer's Disease and Mild Cognitive Impairment. Front Neurol 2019; 10:1223. [PMID: 31824405 PMCID: PMC6884031 DOI: 10.3389/fneur.2019.01223] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 11/04/2019] [Indexed: 01/25/2023] Open
Abstract
Background: Mild cognitive impairment (MCI) is regarded as a transition phase between normal aging and Alzheimer's disease (AD). Identification of novel and non-invasive biomarkers that can distinguish AD at an early stage from MCI is warranted for therapeutic and support planning. The goal of this study was to identify the differences of serum metabolomic profiles between MCI and early-stage AD, which could be potential non-invasive biomarkers for early diagnosis of AD. Methods: The subjects enrolled in the study were classified into two diagnostic groups: MCI (n = 40) and early-stage AD (n = 40). Targeted metabolomics analysis of serum samples was performed using the Biocrates Absolute-IDQ P180 kit. Targeted metabolic data were analyzed by TargetLynx, and MetIDQ software was applied to integrate the metabolites by automated calculation of metabolite concentrations. Results: The datasets of targeted metabolite analysis were analyzed by the orthogonal-projection-to-latent-structure–discriminant-analysis (OPLS-DA) model. The OPLS-DA score plots demonstrated considerable separation between the MCI and early-stage AD patients. The levels of pimelylcarnitine, putrescine, SM (OH) C24:1, and SM C24:0 were significantly lower, whereas the levels of acetylornithine, methionine sulfoxide, and PC ae C44:3 were significantly higher in early-stage AD patients as compared with MCI patients. Receiver operating characteristic curve analysis of a combination of three lipid metabolites [SM (OH) C24:1, SM C24:0, and PC ae C44:3] showed an acceptable discrimination between the early-stage AD and MCI patients (area under the curve = 0.788). Conclusions: Our results characterized the differences of serum metabolic profiles between MCI and early-stage AD patients. The positive findings from this study indicate that the minimally invasive method of blood sampling may help to identify patients with AD at an early stage from those with MCI.
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Affiliation(s)
- Wei-Chieh Weng
- Department of Neurology, College of Medicine, Keelung Chang Gung Memorial Hospital, Chang Gung University, Keelung, Taiwan
| | - Wen-Yi Huang
- Department of Neurology, College of Medicine, Keelung Chang Gung Memorial Hospital, Chang Gung University, Keelung, Taiwan
| | - Hsiang-Yu Tang
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan.,Metabolomics Core Laboratory, Chang Gung University, Taoyuan, Taiwan.,Clinical Metabolomics Core Laboratory, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Kidney Research Center, College of Medicine, Linkou Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Mei-Ling Cheng
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan.,Metabolomics Core Laboratory, Chang Gung University, Taoyuan, Taiwan.,Clinical Metabolomics Core Laboratory, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Kidney Research Center, College of Medicine, Linkou Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Kuan-Hsing Chen
- Kidney Research Center, College of Medicine, Linkou Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
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20
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Zhang ZC, Li PZ, Tang HY, Cheng L. [Correlation analysis of eosinophils in peripheral blood and polyp tissues of patients with chronicrhinosinusitis with nasal polyps]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 33:14-16. [PMID: 30669192 DOI: 10.13201/j.issn.1001-1781.2019.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Indexed: 11/12/2022]
Abstract
Objective:To explore the correlation between peripheral blood eosinophils and tissue eosinophils in patients with chronic rhinosinusitis with nasal polyps(CRSwNP) in different periods.Method:This trial was a prospective study involved 342 patients with CRSwNP who were treated by endoscopic sinus surgery in the Huai'an First People's Hospital, Nanjing Medical University in 2008, 2012 and 2016. Nasal polyp resection specimens were stained by HE.Tissue eosinophils were counted per high-power field, and peripheral blood eosinophils were collected from blood routine examination before operation.The relationship between peripheral blood eosinophils and tissue eosinophils were evaluated.Result:The correlation between peripheral blood eosinophils and tissue eosinophils was positive in nasal polyps in 2008,2012 and 2016(r= 0.275,0.435,0.505, respectively). AUC values were all greater than 0.7. Conclusion:There is a positive correlation between peripheral blood eosinophils and tissue eosinophils infiltration in patients with CRSwNP. Although the cutoff value is changing, peripheral blood eosinophils can be used as an indicator for predicting eosinophilic CRSwNP.
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Affiliation(s)
- Z C Zhang
- Department of Otorhinolaryngology, the Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an,223300,China
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21
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Ye HY, Hu FF, Tang HY, Yang LW, Chen XP, Wang LG, Zhang GQ. Germanene on single-layer ZnSe substrate: novel electronic and optical properties. Phys Chem Chem Phys 2018; 20:16067-16076. [PMID: 29855000 DOI: 10.1039/c8cp00870a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, the structural, electronic and optical properties of germanene and ZnSe substrate nanocomposites have been investigated using first-principles calculations. We found that the large direct-gap ZnSe semiconductors and zero-gap germanene form a typical orbital hybridization heterostructure with a strong binding energy, which shows a moderate direct band gap of 0.503 eV in the most stable pattern. Furthermore, the heterostructure undergoes semiconductor-to-metal band gap transition when subjected to external out-of-plane electric field. We also found that applying external strain and compressing the interlayer distance are two simple ways of tuning the electronic structure. An unexpected indirect-direct band gap transition is also observed in the AAII pattern via adjusting the interlayer distance. Quite interestingly, the calculated results exhibit that the germanene/ZnSe heterobilayer structure has perfect optical absorption in the solar spectrum as well as the infrared and UV light zones, which is superior to that of the individual ZnSe substrate and germanene. The staggered interfacial gap and tunability of the energy band structure via interlayer distance and external electric field and strain thus make the germanene/ZnSe heterostructure a promising candidate for field effect transistors (FETs) and nanoelectronic applications.
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Affiliation(s)
- H Y Ye
- Key Laboratory of Optoelectronic Technology & Systems, Education Ministry of China, Chongqing University and College of Optoelectronic Engineering, Chongqing University, 400044 Chongqing, China.
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22
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Chang KH, Cheng ML, Tang HY, Huang CY, Wu YR, Chen CM. Alternations of Metabolic Profile and Kynurenine Metabolism in the Plasma of Parkinson's Disease. Mol Neurobiol 2018; 55:6319-6328. [PMID: 29294246 DOI: 10.1007/s12035-017-0845-3] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 12/18/2017] [Indexed: 01/01/2023]
Abstract
The pathogenesis of Parkinson's disease (PD) remains to be elucidated. Metabolomic analysis has the potential to identify biochemical pathways and metabolic profiles that are involved in PD pathogenesis. Here, we performed a targeted metabolomics to quantify the plasma levels of 184 metabolites in a discovery cohort including 82 PD patients and 82 normal controls (NCs) and found two up-regulated (dopamine, putrescine/ornithine ratio) and four down-regulated (octadecadienylcarnitine C18:2, asymmetric dimethylarginine, tryptophan, and kynurenine (KYN)) metabolites in the plasma of PD patients. We then measured the plasma levels of a panel of metabolic products of KYN pathway in an independent validation cohort including 118 PD patients, 22 Huntington's disease (HD) patients, and 37 NCs. Lower kynurenic acid (KA)/KYN ratio, higher quinolinic acid (QA) level, and QA/KA ratio were observed in PD patients compared to HD patients and NCs. PD patients at advanced stage (Hoehn-Yahr stage > 2) showed lower KA and KA/KYN ratio, as well as higher QA and QA/KA ratio compared to PD patients at early stage (Hoehn-Yahr stage ≤ 2) and NCs. Levels of KA and QA, as well as the ratios of KA/KYN and QA/KA between PD patients with and without psychiatric symptoms, dementia, or levodopa-induced dyskinesia in the advanced PD were similar. This metabolomic analyses demonstrate a number of plasma biomarker candidates for PD, suggesting a shift toward neurotoxic QA synthesis and away from neuroprotective KA production in KYN pathway.
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Affiliation(s)
- Kuo-Hsuan Chang
- Department of Neurology, Chang Gung Memorial Hospital Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Mei-Ling Cheng
- Department of Biomedical Sciences, Chang Gung University, Tao-Yuan, Taiwan.,Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan.,Clinical Phenome Center, Chang Gung Memorial Hospital, Tao-Yuan, Taiwan
| | - Hsiang-Yu Tang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Cheng-Yu Huang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Yih-Ru Wu
- Department of Neurology, Chang Gung Memorial Hospital Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chiung-Mei Chen
- Department of Neurology, Chang Gung Memorial Hospital Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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23
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Tang HY, Wang CH, Ho HY, Wu PT, Hung CL, Huang CY, Wu PR, Yeh YH, Cheng ML. Lipidomics reveals accumulation of the oxidized cholesterol in erythrocytes of heart failure patients. Redox Biol 2017; 14:499-508. [PMID: 29101899 PMCID: PMC5675899 DOI: 10.1016/j.redox.2017.10.020] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [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: 10/06/2017] [Revised: 10/21/2017] [Accepted: 10/25/2017] [Indexed: 12/14/2022] Open
Abstract
Lipids play an important role in the pathogenesis of cardiovascular disease. Changes in lipids of erythrocytes are indicative of the outcome of pathophysiological processes. In the present study, we assessed whether the lipid profiles of erythrocytes from heart failure (HF) patients are informative of their disease risk. The lipidomes of erythrocytes from 10 control subjects and 29 patients at different HF stages were analyzed using liquid chromatography time-of-flight mass spectrometry. The lipid composition of erythrocytes obtained from HF patients was significantly different from that of normal controls. The levels of phosphatidylcholines (PCs), phosphatidylethanolamines (PEs), and sphingomyelins decreased in HF erythrocytes as compared with those of control subjects; however, the levels of lysoPCs, lysoPEs, and ceramides increased in HF erythrocytes. Notably, the oxidized cholesterol 7-ketocholesterol (7KCh) accumulated to higher level in HF erythrocytes than in plasma from the same patients. We further validated our findings with a cohort of 115 subjects of control subjects (n=28) and patients (n=87). Mechanistically, 7KCh promoted reactive oxygen species (ROS) formation in cardiomyocytes; and induced their death, probably through an ATF4-dependent pathway. Our findings suggest that erythrocytic 7KCh can be a risk factor for HF, and is probably implicated in its pathophysiology.
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Affiliation(s)
- Hsiang-Yu Tang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan Taiwan
| | - Chao-Hung Wang
- Heart Failure Research Center, Division of Cardiology, Department of Internal Medicine, Chang Gung Memorial Hospital, Keelung, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Hung-Yao Ho
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Clinical Phenome Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Pei-Ting Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chun-Ling Hung
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Cheng-Yu Huang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan Taiwan
| | - Pei-Ru Wu
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yung-Hsin Yeh
- Cardiovascular Division, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Chang-Gung University, Taiwan
| | - Mei-Ling Cheng
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan Taiwan; Clinical Phenome Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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Tang HY, Chiu DTY, Lin JF, Huang CY, Chang KH, Lyu RK, Ro LS, Kuo HC, Cheng ML, Chen CM. Disturbance of Plasma Lipid Metabolic Profile in Guillain-Barre Syndrome. Sci Rep 2017; 7:8140. [PMID: 28811529 PMCID: PMC5557802 DOI: 10.1038/s41598-017-08338-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 07/11/2017] [Indexed: 12/31/2022] Open
Abstract
Guillain-Barre Syndrome (GBS) is an inflammatory disease of the peripheral nervous system. Given that plasma metabolic profiles in GBS patients have never been explored, plasma samples of 38 GBS patients, 22 multiple sclerosis (MS) patients, and 40 healthy controls were analyzed by using untargeted and targeted metabolomics analysis. The untargeted analysis showed that levels of a set of plasma lipid metabolites were significantly decreased in GBS patients compared to the controls. Furthermore, the targeted analysis demonstrated that levels of 41 metabolites in GBS patients were significantly changed compared to either the controls or MS patients. A further metabolic analysis showed that 12 of 41 metabolites were significantly lower in classical GBS patients compared to Miller-Fisher syndrome. Among them, each of PCae C34:0, PCae C42:2, PCae C42:3, and SM C24:0 was inversely correlated with Hughes functional grading scale of GBS patients at both nadir and discharge. Receiver operating characteristic curve analysis of combination of three metabolites (PCaa C42:2, PCae C36:0 and SM C24:0) showed a good discrimination between the GBS and the controls (area under curve = 0.86). This study has demonstrated disruption of lipid metabolites in GBS may be potential biomarkers to indicate disease severity and prognosis of GBS.
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Affiliation(s)
- Hsiang-Yu Tang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Daniel Tsun-Yee Chiu
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan.,Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Pediatric Hematology/Oncology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Jui-Fen Lin
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Cheng-Yu Huang
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Kuo-Hsuan Chang
- Department of Neurology, Chang Gung Memorial Hospital Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Rong-Kuo Lyu
- Department of Neurology, Chang Gung Memorial Hospital Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Long-Sun Ro
- Department of Neurology, Chang Gung Memorial Hospital Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Hung-Chou Kuo
- Department of Neurology, Chang Gung Memorial Hospital Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Mei-Ling Cheng
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan. .,Clinical Phenome Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan. .,Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Chiung-Mei Chen
- Department of Neurology, Chang Gung Memorial Hospital Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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25
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Wen LL, Zhu ZW, Yang C, Liu L, Zuo XB, Morris DL, Dou JF, Ye L, Cheng YY, Guo HM, Huang HQ, Lin Y, Zhu CH, Tang LL, Chen MY, Zhou Y, Ding YT, Liang B, Zhou FS, Gao JP, Tang XF, Zheng XD, Wang WJ, Yin XY, Tang HY, Sun LD, Yang S, Zhang XJ, Sheng YJ, Cui Y. Multiple variants in 5q31.1 are associated with systemic lupus erythematosus susceptibility and subphenotypes in the Han Chinese population. Br J Dermatol 2017; 177:801-808. [PMID: 28144936 DOI: 10.1111/bjd.15362] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND A previous study provided evidence for a genetic association between PPP2CA on 5q31.1 and systemic lupus erythematosus (SLE) across multi-ancestral cohorts, but failed to find significant evidence for an association in the Han Chinese population. OBJECTIVES To explore the association between this locus and SLE using data from our previously published genome-wide association study (GWAS). METHODS Single-nucleotide polymorphisms (SNPs) rs7726414 and rs244689 (near TCF7 and PPP2CA in 5q31.1) were selected as candidate independent associations from a large-scale study in a Han Chinese population consisting of 1047 cases and 1205 controls. Subsequently, 3509 cases and 8246 controls were genotyped in two further replication studies. We then investigated the SNPs' associations with SLE subphenotypes and gene expression in peripheral blood mononuclear cells. RESULTS Highly significant associations with SLE in the Han Chinese population were detected for SNPs rs7726414 and rs244689 by combining the genotype data from our previous GWAS and two independent replication cohorts. Further conditional analyses indicated that these two SNPs contribute to disease susceptibility independently. A significant association with SLE, age at diagnosis < 20 years, was found for rs7726414 (P = 0·001). The expression levels of TCF7 and PPP2CA messenger RNA in patients with SLE were significantly decreased compared with those in healthy controls. CONCLUSIONS This study found evidence for multiple associations with SLE in 5q31.1 at genome-wide levels of significance for the first time in a Han Chinese population, in a combined genotype dataset. These findings suggest that variants in the 5q31.1 locus not only provide novel insights into the genetic architecture of SLE, but also contribute to the complex subphenotypes of SLE.
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Affiliation(s)
- L L Wen
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - Z W Zhu
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - C Yang
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - L Liu
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - X B Zuo
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - D L Morris
- Division of Genetics and Molecular Medicine, King's College London, U.K
| | - J F Dou
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - L Ye
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - Y Y Cheng
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - H M Guo
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - H Q Huang
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - Y Lin
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China.,Department of Dermatology, the Fourth Affiliated Hospital, Anhui Medical University, Hefei, Anhui, 230032, China
| | - C H Zhu
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - L L Tang
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - M Y Chen
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - Y Zhou
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - Y T Ding
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - B Liang
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - F S Zhou
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - J P Gao
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - X F Tang
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - X D Zheng
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - W J Wang
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - X Y Yin
- Department of Genetics, and Renaissance Computing Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, U.S.A
| | - H Y Tang
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - L D Sun
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - S Yang
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - X J Zhang
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - Y J Sheng
- Institute of Dermatology and Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, 230032, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui, 230032, China
| | - Y Cui
- Department of Dermatology, China-Japan Friendship Hospital, East Street Cherry Park, Chaoyang District, Beijing, 100029, China
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Wu YH, Chiu DTY, Lin HR, Tang HY, Cheng ML, Ho HY. Glucose-6-Phosphate Dehydrogenase Enhances Antiviral Response through Downregulation of NADPH Sensor HSCARG and Upregulation of NF-κB Signaling. Viruses 2015; 7:6689-706. [PMID: 26694452 PMCID: PMC4690889 DOI: 10.3390/v7122966] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [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: 10/07/2015] [Revised: 12/07/2015] [Accepted: 12/10/2015] [Indexed: 01/22/2023] Open
Abstract
Glucose-6-phosphate dehydrogenase (G6PD)-deficient cells are highly susceptible to viral infection. This study examined the mechanism underlying this phenomenon by measuring the expression of antiviral genes-tumor necrosis factor alpha (TNF-α) and GTPase myxovirus resistance 1 (MX1)-in G6PD-knockdown cells upon human coronavirus 229E (HCoV-229E) and enterovirus 71 (EV71) infection. Molecular analysis revealed that the promoter activities of TNF-α and MX1 were downregulated in G6PD-knockdown cells, and that the IκB degradation and DNA binding activity of NF-κB were decreased. The HSCARG protein, a nicotinamide adenine dinucleotide phosphate (NADPH) sensor and negative regulator of NF-κB, was upregulated in G6PD-knockdown cells with decreased NADPH/NADP⁺ ratio. Treatment of G6PD-knockdown cells with siRNA against HSCARG enhanced the DNA binding activity of NF-κB and the expression of TNF-α and MX1, but suppressed the expression of viral genes; however, the overexpression of HSCARG inhibited the antiviral response. Exogenous G6PD or IDH1 expression inhibited the expression of HSCARG, resulting in increased expression of TNF-α and MX1 and reduced viral gene expression upon virus infection. Our findings suggest that the increased susceptibility of the G6PD-knockdown cells to viral infection was due to impaired NF-κB signaling and antiviral response mediated by HSCARG.
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Affiliation(s)
- Yi-Hsuan Wu
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Tao-yuan 333, Taiwan.
| | - Daniel Tsun-Yee Chiu
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Tao-yuan 333, Taiwan.
- Healthy Aging Research Center, Chang Gung University, Tao-yuan 333, Taiwan.
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Lin-Kou 333, Taiwan.
| | - Hsin-Ru Lin
- Molecular Medicine Research Center, Chang Gung University, Tao-yuan 333, Taiwan.
| | - Hsiang-Yu Tang
- Healthy Aging Research Center, Chang Gung University, Tao-yuan 333, Taiwan.
| | - Mei-Ling Cheng
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Tao-yuan 333, Taiwan.
- Healthy Aging Research Center, Chang Gung University, Tao-yuan 333, Taiwan.
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-yuan 333, Taiwan.
| | - Hung-Yao Ho
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Tao-yuan 333, Taiwan.
- Healthy Aging Research Center, Chang Gung University, Tao-yuan 333, Taiwan.
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Wang T, Zhao G, Tang HY, Jiang ZD. DETERMINATION OF CONVECTIVE HEAT TRANSFER COEFFICIENT AT THE OUTER SURFACE OF A CRYOVIAL BEING PLUNGED INTO LIQUID NITROGEN. Cryo Letters 2015; 36:285-288. [PMID: 26576004] [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: 06/05/2023]
Abstract
BACKGROUND Cell survival upon cryopreservation is affected by the cooling rate. However, it is difficult to model the heat transfer process or to predict the cooling curve of a cryoprotective agent (CPA) solution due to the uncertainty of its convective heat transfer coefficient (h). OBJECTIVE To measure the h and to better understand the heat transfer process of cryovials filled with CPA solution being plunged in liquid nitrogen. MATERIALS AND METHODS The temperatures at three locations of the CPA solution in a cryovial were measured. Different h values were selected after the cooling process was modeled as natural convection heat transfer, the film boiling and the nucleate boiling, respectively. And the temperatures of the selected points are simulated based on the selected h values. h was determined when the simulated temperature best fitted the experimental temperature. RESULTS When the experimental results were best fitted, according to natural convection heat transfer model, h(1) = 120 W/(m(2)·K) while due to film boiling and nucleate boiling regimes h(f) = 5 W/(m(2)·K) followed by h(n) = 245 W/(m(2)·K). These values were verified by the differential cooling rates at the three locations of a cryovial. CONCLUSION The heat transfer process during cooling in liquid nitrogen is better modeled as film boiling followed by nucleate boiling.
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Affiliation(s)
- T Wang
- Centre for Biomedical Engineering, Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, China
| | - G Zhao
- Centre for Biomedical Engineering, Department of Electronic Science and Technology, University of Science and Technology of China, Hefei; Anhui Provincial Engineering Technology Research Center for Biopreservation and Artificial Organs, Hefei, China.
| | - H Y Tang
- Centre for Biomedical Engineering, Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, China
| | - Z D Jiang
- Centre for Biomedical Engineering, Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, China
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28
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Tang HY, Ho HY, Wu PR, Chen SH, Kuypers FA, Cheng ML, Chiu DTY. Inability to maintain GSH pool in G6PD-deficient red cells causes futile AMPK activation and irreversible metabolic disturbance. Antioxid Redox Signal 2015; 22:744-59. [PMID: 25556665 PMCID: PMC4361223 DOI: 10.1089/ars.2014.6142] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [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: 12/15/2022]
Abstract
AIMS Glucose 6-phosphate dehydrogenase (G6PD) is essential for maintenance of nicotinamide dinucleotide hydrogen phosphate (NADPH) levels and redox homeostasis. A number of drugs, such as antimalarial drugs, act to induce reactive oxygen species and hemolytic crisis in G6PD-deficient patients. We used diamide (DIA) to mimic drug-induced oxidative stress and studied how these drugs affect cellular metabolism using a metabolomic approach. RESULTS There are a few differences in metabolome between red blood cells (RBCs) from normal and G6PD-deficient individuals. DIA causes modest changes in normal RBC metabolism. In contrast, there are significant changes in various biochemical pathways, namely glutathione (GSH) metabolism, purine metabolism, and glycolysis, in G6PD-deficient cells. GSH depletion is concomitant with a shift in energy metabolism. Adenosine monophosphate (AMP) and adenosine diphosphate (ADP) accumulation activates AMP protein kinase (AMPK) and increases entry of glucose into glycolysis. However, inhibition of pyruvate kinase (PK) reduces the efficacy of energy production. Metabolic changes and protein oxidation occurs to a greater extent in G6PD-deficient RBCs than in normal cells, leading to severe irreversible loss of deformability of the former. INNOVATION AND CONCLUSION Normal and G6PD-deficient RBCs differ in their responses to oxidants. Normal cells have adequate NADPH regeneration for maintenance of GSH pool. In contrast, G6PD-deficient cells are unable to regenerate enough NADPH under a stressful situation, and switch to biosynthetic pathway for GSH supply. Rapid GSH exhaustion causes energy crisis and futile AMPK activation. Our findings suggest that drug-induced oxidative stress differentially affects metabolism and metabolite signaling in normal and G6PD-deficient cells. It also provides an insight into the pathophysiology of acute hemolytic anemia in G6PD-deficient patients.
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Affiliation(s)
- Hsiang-Yu Tang
- 1 Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Tao-yuan, Taiwan
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29
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Chou HY, Lin YH, Shiu GL, Tang HY, Cheng ML, Shiao MS, Pai LM. ADI1, a methionine salvage pathway enzyme, is required for Drosophila fecundity. J Biomed Sci 2014; 21:64. [PMID: 25037729 PMCID: PMC4115168 DOI: 10.1186/s12929-014-0064-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Accepted: 07/08/2014] [Indexed: 12/02/2022] Open
Abstract
Background Methionine, an essential amino acid, is required for protein synthesis and normal cell metabolism. The transmethylation pathway and methionine salvage pathway (MTA cycle) are two major pathways regulating methionine metabolism. Recently, methionine has been reported to play a key role in Drosophila fecundity. Results Here, we revealed that the MTA cycle plays a crucial role in Drosophila fecundity using the mutant of aci-reductone dioxygenase 1 (DADI1), an enzyme in the MTA cycle. In dietary restriction condition, the egg production of adi1 mutant flies was reduced compared to that of control flies. This fecundity defect in mutant flies was rescued by reintroduction of Dadi1 gene. Moreover, a functional homolog of human ADI1 also recovered the reproduction defect, in which the enzymatic activity of human ADI1 is required for normal fecundity. Importantly, methionine supply rescued the fecundity defect in Dadi1 mutant flies. The detailed analysis of Dadi1 mutant ovaries revealed a dramatic change in the levels of methionine metabolism. In addition, we found that three compounds namely, methionine, SAM and Methionine sulfoxide, respectively, may be required for normal fecundity. Conclusions In summary, these results suggest that ADI1, an MTA cycle enzyme, affects fly fecundity through the regulation of methionine metabolism.
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30
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Chen CM, Weng YT, Chen WL, Lin TH, Chao CY, Lin CH, Chen IC, Lee LC, Lin HY, Wu YR, Chen YC, Chang KH, Tang HY, Cheng ML, Lee-Chen GJ, Lin JY. Aqueous extract of Glycyrrhiza inflata inhibits aggregation by upregulating PPARGC1A and NFE2L2-ARE pathways in cell models of spinocerebellar ataxia 3. Free Radic Biol Med 2014; 71:339-350. [PMID: 24675225 DOI: 10.1016/j.freeradbiomed.2014.03.023] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [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: 08/27/2013] [Revised: 03/05/2014] [Accepted: 03/15/2014] [Indexed: 12/17/2022]
Abstract
Spinocerebellar ataxia (SCA) types 1, 2, 3, 6, 7, and 17 and dentatorubropallidoluysian atrophy, as well as Huntington disease, are a group of neurodegenerative disorders caused by a CAG triplet-repeat expansion encoding a long polyglutamine (polyQ) tract in the respective mutant proteins. The cytoplasmic and nuclear aggregate formation, a pathological hallmark of polyQ diseases, is probably the initial process triggering the subsequent pathological events. Compromised oxidative stress defense capacity and mitochondrial dysfunction have emerged as contributing factors to the pathogenesis of polyQ diseases. The roots of licorice (Glycyrrhiza species) have long been used as an herbal medicine. In this study, we demonstrate the aggregate-inhibitory effect of Glycyrrhiza inflata herb extract and its constituents licochalcone A and ammonium glycyrrhizinate (AMGZ) in both 293 and SH-SY5Y ATXN3/Q75 cells, SCA3 cell models. The reporter assay showed that G. inflata herb extract, licochalcone A, and AMGZ could enhance the promoter activity of peroxisome proliferator-activated receptor γ, coactivator 1α (PPARGC1A), a known regulator of mitochondrial biogenesis and antioxidative response genes. G. inflata extract, licochalcone A, and AMGZ upregulated PPARGC1A expression and its downstream target genes, SOD2 and CYCS, in the 293 ATXN3/Q75 cell model. The expression of nuclear factor erythroid 2-related factor 2 (NFE2L2), the principal transcription factor that binds to antioxidant-responsive elements (AREs) to promote ARE-dependent gene expression when the cells respond to oxidative stress, and its downstream genes, HMOX1, NQO1, GCLC, and GSTP1, was also increased by G. inflata herb extract, licochalcone A, and AMGZ. Knockdown of PPARGC1A increased aggregates in ATXN3/Q75 cells and also attenuated the aggregate-inhibiting effect of the tested compounds. G. inflata extract and its constituents significantly elevated GSH/GSSG ratio and reduced reactive oxidative species in ATXN3/Q75 cells. The study results suggest that the tested agents activate PPARGC1A activity and NFE2L2-ARE signaling to increase mitochondrial biogenesis, decrease oxidative stress, and reduce aggregate formation in SCA3 cellular models.
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Affiliation(s)
- Chiung-Mei Chen
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei 10507, Taiwan
| | - Yu-Ting Weng
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei 10507, Taiwan
| | - Wan-Ling Chen
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei 10507, Taiwan
| | - Te-Hsien Lin
- Department of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Chih-Ying Chao
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei 10507, Taiwan
| | - Chih-Hsin Lin
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei 10507, Taiwan
| | - I-Cheng Chen
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei 10507, Taiwan
| | - Li-Ching Lee
- Department of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Hsuan-Yuan Lin
- Institute of Biochemistry and Molecular Biology, College of Medicine, National Taiwan University, Taipei 11051, Taiwan
| | - Yih-Ru Wu
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei 10507, Taiwan
| | - Yi-Chun Chen
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei 10507, Taiwan
| | - Kuo-Hsuan Chang
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei 10507, Taiwan
| | - Hsiang-Yu Tang
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan 33302, Taiwan
| | - Mei-Ling Cheng
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan 33302, Taiwan
| | - Guey-Jen Lee-Chen
- Department of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan.
| | - Jung-Yaw Lin
- Department of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan; Institute of Biochemistry and Molecular Biology, College of Medicine, National Taiwan University, Taipei 11051, Taiwan.
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Tang LS, Xu J, Tang HY. Correlations of abnormal ultrasound audio-visual images of ovarian cortex surface and pelvic adhesion in infertile patients. CLIN EXP OBSTET GYN 2014; 41:160-162. [PMID: 24779243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE The aim of this study was to evaluate the related factors between abnormal ultrasonic appearance of ovarian and pelvic adhesion in infertile women. MATERIALS AND METHODS Forty-eight cases were examined with transvaginal ultrasonography (TVUS) if there was pelvic adhesion before surgery (experiment group), and the surgical group was used as control. The specificity of pelvic adhesion was evaluated. RESULTS Thirty-nine cases were abnormal in experiment group and 38 cases were confirmed with surgery, while one case was normal. Nine cases were normal in study group and six cases were confirmed with surgery, while three cases were abnormal. There were 91.7% (44/48) in coincidence rate and 97.4% (38/39) in positive predictive value. CONCLUSION Infertility in women with pelvic adhesion with abnormal ovarian appearance, may be examined specifically with TVUS.
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Wang W, Liu LH, Chen G, Gao M, Zhu J, Zhou FS, Cheng H, Tang HY, Wu BY, Sun LD, Yang S, Wang PG, Zhang XJ. A missense mutation in the GJB3 gene responsible for erythrokeratodermia variabilis in a Chinese family. Clin Exp Dermatol 2012; 37:919-21. [PMID: 22681493 DOI: 10.1111/j.1365-2230.2012.04406.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tang XF, Tang HY, Sun LD, Xiao FL, Zhang Z, Li Y, Zuo XB, Zhou FS, Yang KL, Fang P, Liu YH, Du WD, Yang S, Duan ML, Zhang XJ. Genetic variant rs4982958 at 14q11.2 is associated with allergic rhinitis in a Chinese Han population running title: 14q11.2 is a susceptibility locus for allergic rhinitis. J Investig Allergol Clin Immunol 2012; 22:55-62. [PMID: 22448455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
BACKGROUND Allergic rhinitis (AR) is one of the most common diseases caused by the combined effects of intrinsic factors (susceptibility genes and immunological status) and the external environment. Analyses of ascendant family history of atopic disease suggest that AR and atopic dermatitis might share a similar genetic background. OBJECTIVE To conduct a case-control study in a Chinese Han population to evaluate the potential influence of single nucleotide polymorphisms (SNPs) at FLG, 5q22.1, 11q13.5, 14q11.2 and 20q13.33 on AR. METHODS Ten SNPs--rs11204971 and rs3126085 at FLG, rs10067777, rs7701890, rs13360927, and rs13361382 at 5q22.1, rs6010620 at 20q13.33, rs7936562 and rs7124842 at 11q13.5, and rs4982958 at 14q11.2 were genotyped in 363 cases and 668 controls using the Sequenom MassArray system. Data were analyzed with PLINK 1.07 software. RESULTS The T allele of rs4982958 at 14q11.2 was observed to be significantly associated with AR (P = .002, OR = 0.73, P(Bonferront) = .02). Genotype-based association testing revealed that the recessive model might provide the best fit for rs4982958 (P(Bonferroni) = .01). In subphenotype analyses, the rs4982958 T allele was also significantly associated with persistent AR (P = .01) and more than 2 positive skin prick tests (P = .038). CONCLUSION We identified a novel susceptibility locus 14q11.2 for AR that might bear candidate genes conferring susceptibility to AR and affecting disease phenotypes.
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MESH Headings
- Adolescent
- Adult
- Aged
- Asian People/genetics
- Base Sequence
- Case-Control Studies
- Child
- Child, Preschool
- China
- Dermatitis, Atopic/genetics
- Dermatitis, Atopic/immunology
- Female
- Filaggrin Proteins
- Gene Frequency
- Genetic Predisposition to Disease
- Genotype
- Humans
- Hypersensitivity, Immediate/genetics
- Male
- Middle Aged
- Polymorphism, Single Nucleotide
- Rhinitis, Allergic, Seasonal/ethnology
- Rhinitis, Allergic, Seasonal/genetics
- Rhinitis, Allergic, Seasonal/immunology
- Sequence Analysis, DNA
- Skin Tests
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Affiliation(s)
- X F Tang
- Institute of Dermatology, Department of Dermatology, No.1 Hospital, Anhui Medical University, Hefei, Anhui, China
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Cheng ML, Shiao MS, Chiu DTY, Weng SF, Tang HY, Ho HY. Biochemical disorders associated with antiproliferative effect of dehydroepiandrosterone in hepatoma cells as revealed by LC-based metabolomics. Biochem Pharmacol 2011; 82:1549-61. [PMID: 21843511 DOI: 10.1016/j.bcp.2011.07.104] [Citation(s) in RCA: 21] [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] [Received: 06/05/2011] [Revised: 07/24/2011] [Accepted: 07/29/2011] [Indexed: 11/29/2022]
Abstract
DHEA is known to have chemopreventive and antiproliferative activities, and was initially thought to be mediated by inhibition of G6PD. Our previous study has shown that DHEA may act through interference with energy metabolism. To study the effect of pharmacological dose of DHEA on cellular metabolism, and to further delineate the mechanism underlying its antiproliferative effect, we applied a metabolomic approach to globally profile the changes in metabolites in SK-Hep1 cells underexpressing G6PD (Sk-Gi) and control cells (Sk-Sc) after DHEA treatment. RRLC-TOF-MS was used to identify metabolites, and tandem mass spectrometry was used to confirm their identity. DHEA induced changes in glutathione metabolism, lipid metabolism, s-adenosylmethionine (SAM) metabolism, as well as lysine metabolism. Elevation in level of glutathione disulfide, together with a concomitant decrease in level of reduced glutathione, was indicative of increased oxidative stress. Depletion of carnitine and its acyl derivatives reflected decline in fatty acid catabolism. These changes were associated with mitochondrial malfunction and reduction in cellular ATP content. Cardiolipin (CL) and phosphatidylcholine (PC) levels decreased significantly, suggesting that alterations in lipid composition are causally related to decline in mitochondrial function after DHEA treatment. The decline in cellular SAM content was accompanied by decreased expression of methionine adenosyltransferase genes MAT2A and MAT2B. SAM supplementation partially rescued cells from DHEA-induced growth stagnation. Our findings suggest that DHEA causes perturbation of multiple pathways in cellular metabolism. Decreased SAM production, and cardiolipin depletion and the resulting mitochondrial dysfunction underlie the antiproliferative effect of DHEA.
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Affiliation(s)
- Mei-Ling Cheng
- Department of Medical Biotechnology and Laboratory Science, Chang Gung University, 259, Wen-Hwa 1st Rd., Kwei-San, Tao-Yuan, Taiwan.
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Tang HY, Du WD, Cui Y, Fan X, Quan C, Fang QY, Zhou FS, Yao FM, Wang JF, Yang S, Zhang X. One novel and two recurrent mutations in the keratin 5 gene identified in Chinese patients with epidermolysis bullosa simplex. Clin Exp Dermatol 2010; 34:e957-61. [PMID: 20055872 DOI: 10.1111/j.1365-2230.2009.03703.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Epidermolysis bullosa simplex (EBS) is a group of inherited skin diseases, characterized by the formation of intraepidermal blisters. We performed genetic analysis of the keratin 5 (KRT5) gene in two Chinese pedigrees. One novel missense mutation was identified in a patient with sporadic EBS (general, non-Dowling-Meara). Sequence analysis showed a heterozygous T > A transition at nucleotide 1730 of KRT5, changing phenylalanine (Phe) to tyrosine (Tyr) at position 577 of the keratin 5 (K5). In addition, two recurrent mutations c.1649delG (p.Gly550AlafsX77) and c.508G > (p.Glu170Lys) in KRT5 were identified in Chinese patients with mottled pigmentation EBS and localized EBS, respectively. None of the mutations were found in any unaffected family members or in an additional 100 unrelated control samples. These results suggest that these mutations are pathogenic and might be one of the potential causes of EBS in these Chinese patients.
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Affiliation(s)
- H Y Tang
- Institute of Dermatology & Department of Dermatology at First Hospital, Anhui Medical University, Anhui, China
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Lau KS, Siong KH, Tang HY, Cheng PW, Cheung KS, Chan SW, Lee PWH, Wong JGWS. An innovative web-based peer support system for medical students in Hong Kong. Med Teach 2007; 29:984-986. [PMID: 18158678 DOI: 10.1080/01421590701551748] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
BACKGROUND Psychological morbidity is commonly found in medical students. AIMS The Mental Health Support Group (MSG), a student-initiated and student-run web-based peer support service aims to provide mental health information, e mail counseling and an online forum for medical students. METHODS The development process of MSG is described in the paper with presentation of preliminary evaluation results. RESULTS Preliminary evaluation shows promising results. Student members of MSG acquired valuable skills in counseling, communication, webpage design and maintenance of an online forum. CONCLUSIONS Future challenges include succession issues, strategies to keep up the momentum, enhancement of publicity and further diversification of service to meet the needs of our students.
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Affiliation(s)
- K S Lau
- University of Hong Kong, Hong Kong
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Affiliation(s)
- J H You
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT.
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Kim ED, Nath R, Kadmon D, Lipshultz LI, Miles BJ, Slawin KM, Tang HY, Wheeler T, Scardino PT. Bilateral nerve graft during radical retropubic prostatectomy: 1-year followup. J Urol 2001; 165:1950-6. [PMID: 11371887 DOI: 10.1097/00005392-200106000-00024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE With the interposition of a sural nerve graft to replace resected cavernous nerves at radical retropubic prostatectomy, we have previously reported the return of effective erectile function. We determine the efficacy of this procedure in a series of men with at least 1-year followup. MATERIALS AND METHODS A total of 12 potent men (mean age plus or minus standard deviation 57 +/- 6 years) with clinically localized prostate cancer underwent radical retropubic prostatectomy, with deliberate wide bilateral neurovascular bundle resection and placement of bilateral nerve grafts. A series of patient and partner erectile dysfunction questionnaires, and patient interviews were performed at 3, 6, 12 and 18 months postoperatively. Only results for those men with a followup of 12 months or greater (mean 16 +/- 4) are presented. A control group of 12 men who had undergone bilateral nerve resection but declined nerve graft placement, was also followed. RESULTS Of the 12 men 4 (33%) had spontaneous medically unassisted erections sufficient for sexual intercourse with vaginal penetration. An additional 5 (42%) men describe "40 to 60%" spontaneous erections, with fullness, no rigidity and not able to penetrate. Overall, 9 (75%) men had return of erectile activity. No demonstrable erections occurred before 5 months postoperatively. The greatest return of function was observed at 14 to 18 months after surgery. CONCLUSIONS This surgical technique has minimal morbidity and represents a significant advance in prostate cancer surgery in men requiring bilateral nerve resection. Our study clearly demonstrates recovery of erectile function in men who underwent bilateral nerve graft placement during radical retropubic prostatectomy when both cavernous nerves were deliberately resected.
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Affiliation(s)
- E D Kim
- Matsunaga-Conte Prostate Cancer Research Center, Division of Male Reproductive Medicine and Surgery, Scott Department of Urology, Baylor College of Medicine, Houston, Texas, USA
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Zuo X, Echan L, Hembach P, Tang HY, Speicher KD, Santoli D, Speicher DW. Towards global analysis of mammalian proteomes using sample prefractionation prior to narrow pH range two-dimensional gels and using one-dimensional gels for insoluble and large proteins. Electrophoresis 2001; 22:1603-15. [PMID: 11425216 DOI: 10.1002/1522-2683(200105)22:9<1603::aid-elps1603>3.0.co;2-i] [Citation(s) in RCA: 105] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The number of unique protein species in proteomes from a single mammalian cell type is not well defined but is likely to be at least 10000-20000. Since standard-size two-dimensional gels typically resolve only about 1500 to 3000 spots, they merely analyze a small portion of these proteomes. In addition, all insoluble proteins and typically proteins > 100 kDa are seldom resolved on two-dimensional (2-D) gels. The current study demonstrates the feasibility of an overall strategy for more comprehensive quantitative comparisons of complex proteomes derived from physiological fluids or mammalian cell extracts. A key feature of this approach is to prefractionate samples into a few well-resolved fractions based on the proteins' isoelectric points (pIs) using microscale solution isoelectric focusing. These fractions are then separated on narrow pH range two-dimensional gels approximately +/- 0.1 pH unit wider than the prefractionated pool. When this prefractionation approach is applied to complex mammalian proteomes, it improves resolution and spot recovery at high protein loads compared with use of parallel narrow pH range gels without prefractionation. The minimal cross-contamination between fractions allows quantitative comparisons in contrast to most alternative prefractionation methods. In addition, complementary data can be obtained by parallel analysis of the solubilized fraction on high-resolution large-pore-gradient one-dimensional gels followed by mass spectrometric identification to analyze proteins between 100 and approximately 500 kDa. Similarly, insoluble proteins can be analyzed using large-pore gels for large proteins and 10-12% one-dimensional sodium dodecyl sulfate (SDS) gels for smaller proteins. Together, these strategies should permit more reliable quantitative comparisons of complex mammalian proteomes where detection of at least 10000 protein spots is needed in order to analyze the majority of the unique protein species.
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Affiliation(s)
- X Zuo
- The Wistar Institute, Philadelphia, PA 19104, USA
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40
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Tang HY, Xu J, Cai M. Pan1p, End3p, and S1a1p, three yeast proteins required for normal cortical actin cytoskeleton organization, associate with each other and play essential roles in cell wall morphogenesis. Mol Cell Biol 2000; 20:12-25. [PMID: 10594004 PMCID: PMC85029 DOI: 10.1128/mcb.20.1.12-25.2000] [Citation(s) in RCA: 129] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/1999] [Accepted: 09/28/1999] [Indexed: 11/20/2022] Open
Abstract
The EH domain proteins Pan1p and End3p of budding yeast have been known to form a complex in vivo and play important roles in organization of the actin cytoskeleton and endocytosis. In this report, we describe new findings concerning the function of the Pan1p-End3p complex. First, we found that the Pan1p-End3p complex associates with Sla1p, another protein known to be required for the assembly of cortical actin structures. Sla1p interacts with the first long repeat region of Pan1p and the N-terminal EH domain of End3p, thus leaving the Pan1p-End3p interaction, which requires the second long repeat of Pan1p and the C-terminal repeat region of End3p, undisturbed. Second, Pan1p, End3p, and Sla1p are also required for normal cell wall morphogenesis. Each of the Pan1-4, sla1Delta, and end3Delta mutants displays the abnormal cell wall morphology previously reported for the act1-1 mutant. These cell wall defects are also exhibited by wild-type cells overproducing the C-terminal region of Sla1p that is responsible for interactions with Pan1p and End3p. These results indicate that the functions of Pan1p, End3p, and Sla1p in cell wall morphogenesis may depend on the formation of a heterotrimeric complex. Interestingly, the cell wall abnormalities exhibited by these cells are independent of the actin cytoskeleton organization on the cell cortex, as they manifest despite the presence of apparently normal cortical actin cytoskeleton. Examination of several act1 mutants also supports this conclusion. These observations suggest that the Pan1p-End3p-Sla1p complex is required not only for normal actin cytoskeleton organization but also for normal cell wall morphogenesis in yeast.
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Affiliation(s)
- H Y Tang
- Institute of Molecular and Cell Biology, National University of Singapore, Singapore 117609, Singapore
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Tang HY, Zhao K, Pizzolato JF, Fonarev M, Langer JC, Manfredi JJ. Constitutive expression of the cyclin-dependent kinase inhibitor p21 is transcriptionally regulated by the tumor suppressor protein p53. J Biol Chem 1998; 273:29156-63. [PMID: 9786925 DOI: 10.1074/jbc.273.44.29156] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The tumor suppressor protein p53 has been implicated in the response of cells to DNA damage. Studies to date have demonstrated a role for p53 in the transcriptional activation of target genes in the cellular response to DNA damage that results in either growth arrest or apoptosis. In contrast, here is demonstrated a role for p53 in regulating the basal level of expression of the cyclin-dependent kinase inhibitor p21 in the absence of treatment with DNA-damaging agents. Wild-type p53-expressing MCF10F cells had detectable levels of p21 mRNA and protein, whereas the p53-negative Saos-2 cells did not. Saos-2 cells were infected with recombinant retrovirus to establish a proliferating pool of cells with a comparable constitutive level of expression of wild-type p53 protein to that seen in untreated MCF10F cells. Restoration of wild-type but not mutant p53 expression recovered a basal level of expression of p21 in these cells. Constitutive expression of luciferase reporter constructs containing the p21 promoter was inhibited by co-transfection with the human MDM2 protein or a dominant-negative p53 protein and was dependent on the presence of p53 response elements in the reporter constructs. Furthermore, p53 in nuclear extracts of untreated cells was capable of binding to DNA in a sequence-specific manner. These results implicate a role for p53 in regulating constitutive levels of expression of p21 and demonstrate that the p53 protein is capable of sequence-specific DNA binding and transcriptional activation in untreated, proliferating cells.
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Affiliation(s)
- H Y Tang
- Derald H. Ruttenberg Cancer Center and the Brookdale Center for Molecular and Developmental Biology, Mount Sinai School of Medicine, New York, New York 10029, USA
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Tang HY, Munn A, Cai M. EH domain proteins Pan1p and End3p are components of a complex that plays a dual role in organization of the cortical actin cytoskeleton and endocytosis in Saccharomyces cerevisiae. Mol Cell Biol 1997; 17:4294-304. [PMID: 9234686 PMCID: PMC232282 DOI: 10.1128/mcb.17.8.4294] [Citation(s) in RCA: 110] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Several proteins from diverse organisms have been shown to share a region of sequence homology with the mammalian epidermal growth factor receptor tyrosine kinase substrate Eps15. Included in this new protein family, termed EH domain proteins, are two yeast proteins, Pan1p and End3p. We have shown previously that Pan1p is required for normal organization of the actin cytoskeleton and that it associates with the actin patches on the cell cortex. End3p has been shown by others to be an important factor in the process of endocytosis. End3p is also known to be required for the organization of the actin cytoskeleton. Here we report that Pan1p and End3p act as a complex in vivo. Using the pan1-4 mutant which we isolated and characterized previously, the END3 gene was identified as a suppressor of pan1-4 when overexpressed. Suppression of the pan1-4 mutation by multicopy END3 required the presence of the mutant Pan1p protein. Coimmunoprecipitation and two-hybrid protein interaction experiments indicated that Pan1p and End3p associate with each other. The localization of Pan1p to the cortical actin cytoskeleton became weakened in the end3 mutant at the permissive temperature and undetectable at the restrictive temperature, suggesting that End3p may be important for proper localization of Pan1p to the cortical actin cytoskeleton. The finding that the pan1-4 mutant was defective in endocytosis as severely as the end3 mutant under nonpermissive conditions supports the notion that the association between Pan1p and End3p is of physiological relevance. Together with results of earlier reports, these results provide strong evidence suggesting that Pan1p and End3p are the components of a complex that has essential functions in both the organization of cell membrane-associated actin cytoskeleton and the process of endocytosis.
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Affiliation(s)
- H Y Tang
- Institute of Molecular and Cell Biology, National University of Singapore, Singapore
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Tang HY, Cai M. The EH-domain-containing protein Pan1 is required for normal organization of the actin cytoskeleton in Saccharomyces cerevisiae. Mol Cell Biol 1996; 16:4897-914. [PMID: 8756649 PMCID: PMC231492 DOI: 10.1128/mcb.16.9.4897] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Normal cell growth and division in the yeast Saccharomyces cerevisiae involve dramatic and frequent changes in the organization of the actin cytoskeleton. Previous studies have suggested that the reorganization of the actin cytoskeleton in accordance with cell cycle progression is controlled, directly or indirectly, by the cyclin-dependent kinase Cdc28. Here we report that by isolating rapid-death mutants in the background of the Start-deficient cdc28-4 mutation, the essential yeast gene PAN1, previously thought to encode the yeast poly(A) nuclease, is identified as a new factor required for normal organization of the actin cytoskeleton. We show that at restrictive temperature, the pan1 mutant exhibited abnormal bud growth, failed to maintain a proper distribution of the actin cytoskeleton, was unable to reorganize actin the cytoskeleton during cell cycle, and was defective in cytokinesis. The mutant also displayed a random pattern of budding even at permissive temperature. Ectopic expression of PAN1 by the GAL promoter caused abnormal distribution of the actin cytoskeleton when a single-copy vector was used. Immunofluorescence staining revealed that the Pan1 protein colocalized with the cortical actin patches, suggesting that it may be a filamentous actin-binding protein. The Pan1 protein contains an EF-hand calcium-binding domain, a putative Src homology 3 (SH3)-binding domain, a region similar to the actin cytoskeleton assembly control protein Sla1, and two repeats of a newly identified protein motif known as the EH domain. These findings suggest that Pan1, recently recognized as not responsible for the poly(A) nuclease activity (A. B. Sachs and J. A. Deardorff, erratum, Cell 83:1059, 1995; R. Boeck, S. Tarun, Jr., M. Rieger, J. A. Deardorff, S. Muller-Auer, and A. B. Sachs, J. Biol. Chem. 271:432-438, 1996), plays an important role in the organization of the actin cytoskeleton in S. cerevisiae.
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Affiliation(s)
- H Y Tang
- Institute of Molecular and Cell Biology, National University of Singapore
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Abstract
The role of cell cycle redistribution in fluoropyrimidine-mediated radiosensitization remains unresolved. To determine if radiosensitization resulted from the redistribution of cells into a sensitive phase of the cell cycle, we assessed fluorodeoxyuridine (FdUrd)-mediated radiosensitization in flow-sorted mid-S phase HT29 human colon cancer cells. We hypothesized that if FdUrd-mediated radiosensitization were strictly the result of cell cycle redistribution, FdUrd-treated mid-S phase cells would remain as radioresistant as mid-S phase cells cultured in the absence of drug. However, we found that the mid-S phase cells from FdUrd-treated populations were markedly radiosensitized. To assess the role of S phase progression in radiosensitization, we exposed FdUrd-treated cells to aphidicolin, an inhibitor of DNA polymerase alpha, prior to irradiation. We found that aphidicolin blocked the radiosensitizing (and cytotoxic) effects of FdUrd. These results, combined with our previous observations that FdUrd-treated cells at the G1/S boundary are minimally sensitized, appear to disprove the hypothesis that sensitization results strictly from cell cycle distribution. Furthermore, they suggest that a key aspect of both FdUrd-mediated radiosensitization and cytotoxicity is S phase progression on a damaged DNA template.
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Affiliation(s)
- T S Lawrence
- Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor 48109, USA
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Tang HY, Chaffotte AF, Thacher SM. Structural analysis of the predicted coiled-coil rod domain of the cytoplasmic bullous pemphigoid antigen (BPAG1). Empirical localization of the N-terminal globular domain-rod boundary. J Biol Chem 1996; 271:9716-22. [PMID: 8621649 DOI: 10.1074/jbc.271.16.9716] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
The bullous pemphigoid antigen BPAG1 is required for keratin filament linkage to the hemidesmosome, an adhesion complex in epithelial basal cells. BPAG1 structural organization is similar to the intermediate filament-associated proteins desmoplakin I (DPI) and plectin. All three proteins have predicted dumbbell-like structure with central alpha-helical coiled-coil rod and regions of N- and C-terminal homology. To characterize the size of the N-terminal globular domain in BPAG1, two polypeptides spanning possible boundaries with the coiled-coil rod domain of BPAG1 were expressed in Escherichia coli. BP-1 (Mr = 111,000), containing amino acids 663-1581 of BPAG1 (Sawamura, D., Li, K., Chu, M.-L., and Uitto, J. (1991) J. Biol. Chem. 266, 17784-17790), and BP-1A, with a 186 amino acid N-terminal deletion, were purified. BP-1 and BP-1A behave as highly asymmetric dimers in aqueous solution according to velocity sedimentation and gel filtration. Both have globular heads with rod-like tails of roughly equal length, 55-60 nm, upon rotary shadowing. BP-1A content of alpha-helix, determined by circular dichroism, is approximately 90%, consistent with alpha-helical coiled-coil formation in the rod-like tails. The estimated rod length, 383 +/- 57 amino acids (0.15 nm/amino acid), implies that globular folding in the BPAG1 N-terminal extends to the end of N-terminal homology with DPI and plectin. These findings support the existence of a common domain structure in the N-terminal regions of the BPAG1/DPI/plectin family.
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Affiliation(s)
- H Y Tang
- Department of Medical Biochemistry and Genetics, Texas A & M College of Medicine, College Station, Texas 77843, USA
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Tang HY, Weber KL, Lawrence TS, Merchant AK, Maybaum J. Dependence of fluorodeoxyuridine-induced cytotoxicity and megabase DNA fragment formation on S phase progression in HT29 cells. Cancer Chemother Pharmacol 1996; 37:486-90. [PMID: 8599873 DOI: 10.1007/s002800050416] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The relationship between cell cycle progression and induction of DNA double-strand breaks and cytotoxicity by exposure to fluorodeoxyuridine (FdUrd) was studied in HT29 human colon cancer cells. Fractionation of drug-treated populations by centrifugal elutriation yielded subpopulations having widely divergent abilities to progress through S phase in the presence of the drug. One of these subpopulations, which appeared to undergo coordinated growth arrest, was resistant to FdUrd cytotoxicity and DNA damage. In contrast, the subpopulation which was able to progress furthest through S phase in the presence of FdUrd underwent unbalanced growth arrest (i.e., increase in size and mass out of proportion to DNA synthesis), and displayed both DNA double-strand break formation (assayed by pulsed field gel electrophoresis) and loss of clonogenicity. When cells were elutriated prior to drug treatment, producing fractions enriched in cells at various cell cycle stages, no significant differences in sensitivity to FdUrd-induced cytotoxicity were detected among elutriation fractions. These findings support the model that, in HT29 cells, progression into and through S phase during drug treatment is an important determinant of FdUrd-induced DNA damage and cytotoxicity, but that the cell cycle position at the start of drug exposure is not a critical factor for these effects.
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Affiliation(s)
- H Y Tang
- Upjohn Center for Clinical Pharmacology, University of Michigan Medical School, Ann Arbor, MI, 48109-0504, USA
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Lemerle D, Tang H, Murray GM, Morris S, Tang HY. Survey of weeds and diseases in cereal crops in the southern wheat belt of New South Wales. ACTA ACUST UNITED AC 1996. [DOI: 10.1071/ea9960545] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A field survey of weeds in 86 cereal crops in southern New South Wales was conducted in spring 1993 to determine weed and disease distributions, and their levels of infestation. Fifty weed species from 19 families were identified. The most widespread species were Arctotheca calendula (capeweed) in 76% of fields, Avena spp. (wild oats) in 72%, Trifolium subterraneum (subterranean clover) in 69%, Lolium rigidum (annual ryegrass) in 69%, Vulpia spp. (silvergrass) in 63%, Juncus bufonius (toad rush) in 62%, Crassula spp. (stonecrop) in 37%, Polygonum aviculare (wireweed) in 37%, Fumaria spp. (fumitory) in 36%, Chondrilla juncea (skeleton weed) in 36%, Rumex acetosella (sorrel) in 28% and Hordeum spp. (barley grass) in 26%. Some species were associated with region and previous crop. Levels of weed infestation, based on a visual assessment of the relative weed-crop ground cover, plant density and height, were surprisingly high. A questionnaire completed by 181 farmers and 30 agronomists, to determine their perceptions of the most abundant weeds, showed close agreement with the field survey. Current weeds were generally considered difficult to control and expected to be a continuing problem. The exception was Raphanus raphanistrum (wild radish) which had a low incidence, but was expected to become more serious. The root disease, take-all (Gaeumannomyces graminis var. tritici), was recorded in 32% of the 56 wheat crops examined. It was associated with a previous pasture, lupin or cereal crop, but was absent when the previous crop was canola. Another root disease, rhizoctonia bare patch, was found in only one wheat crop. Common foliar diseases were ring spot (Pyrenophora semeniperda) in 57% of wheat crops, septoria tritici blotch (Mycosphaerella graminicola) in 23%, yellow spot (Pyrenophora tritici-repentis) in 2 1 %, stripe rust (Puccinia striiformis) in 3%, and septoria nodorum blotch (Phaeosphaeria nodorum) in 2%. These diseases were generally present on less than 5% of crop leaf area.
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Abstract
Recent evidence casts doubt on the hypotheses that fluoropyrimidine-mediated radiosensitization is related to cytotoxicity or to cell cycle redistribution into the G1/S boundary. We hypothesized that cells that are capable of progressing into S phase in the presence of fluorodeoxyuridine may also be more susceptible to radiation-induced damage. To test this hypothesis, fluorodeoxyuridine (FdUrd)-treated HT29 human colon cancer cells were separated by centrifugal elutriation into four fractions (1-4) containing a range of cells from those at the G1/S boundary (fraction 1) to those which had progressed approximately 11% into S phase (fraction 4). We found that fraction 4 cells showed significantly greater radiosensitization than fraction 1 cells. We also compared the effects of fluorodeoxyuridine on HT29 and SW620 human colon cancer cells. We found that, in contrast with HT29 cells, SW620 cells arrested at the G1/S boundary and were minimally radiosensitized. Finally, we found that an increase in sensitivity was correlated with a decrease in the rate of repair of DNA double-strand and single-strand breaks (assessed by asymmetric field inversion gel electrophoresis and alkaline elution respectively). These findings are consistent with the hypothesis that fluorodeoxyuridine-mediated radiosensitization depends on S phase progression and a decreased ability to repair radiation-induced DNA damage.
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Affiliation(s)
- M A Davis
- Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor 48109-0582, USA
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Zhu ZY, Tang HY, Li YJ, Weng JQ, Yu YX, Zeng RF. Investigation on inactivated epidemic hemorrhagic fever tissue culture vaccine in humans. Chin Med J (Engl) 1994; 107:167-70. [PMID: 7916278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
From 1988 to 1992, 2479 volunteers were immunized by inactivated Meriones unguiculatus kidney cell (MUKC) vaccine. Their seroconversion rates of neutralizing antibody were about 90% after 3 doses of the vaccine. No side effects were found. The vaccine stored for 14 months at 4 degrees C still had good immunogenicity. It was shown that the vaccine was safe, effective and stable. Detailed observation was made in 75 volunteers. The results showed that the seroconversion rate by plaque reduction neutralization test in 3 doses group was higher than that in 2 doses group; but the results by reversed passive hemagglutination (RPHI), immunofluorescence assay (IFA) and ELISA were similar. Different immunization procedures (3 x 1 ml during 28 days or 3 x 1 ml during 60 days), injection routes (im or sc) and vaccine forms (containing adjuvants or not) showed no significant difference. If secondary immunization (one dose) was given one year after primary immunization, geometric mean titre of the neutralizing antibody was two fold higher than that after primary immunization.
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Affiliation(s)
- Z Y Zhu
- Zhejiang Provincial Hygiene and Epidemic Prevention Station, Hangzhou
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Canman CE, Lawrence TS, Shewach DS, Tang HY, Maybaum J. Resistance to fluorodeoxyuridine-induced DNA damage and cytotoxicity correlates with an elevation of deoxyuridine triphosphatase activity and failure to accumulate deoxyuridine triphosphate. Cancer Res 1993; 53:5219-24. [PMID: 8221659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Deoxyuridine triphosphate (dUTP) misincorporation and uracil misrepair have long been implicated in fluoropyrimidine-induced DNA damage; however, the enzymatic activities responsible for these lesions have not been previously identified as critical determinants of overall sensitivity to the antitumor effects of these agents. The purpose of this study was to determine whether differences in uracil misincorporation/misrepair could account for the difference in sensitivity to fluorodeoxyuridine (FdUrd)-induced cytotoxicity and DNA damage in 2 human colorectal tumor cell lines having identical sensitivities to FdUrd-induced thymidylate synthase inhibition. Compared to HT29 cells, SW620 cells were resistant to both cytotoxicity and induction of DNA double-strand breaks, as assessed by pulse field gel electrophoresis. Alkaline elution experiments demonstrated that this resistance coincided with delayed induction of DNA single-strand breaks on parental DNA and, to a lesser extent, on nascent DNA. Following treatment with FdUrd for 24 h, HT29 cells accumulated 904 +/- 273 pmol deoxyuridine triphosphate (dUTP)/10(7) cells, whereas SW620 cells accumulated 20 +/- 7 pmol dUTP. Consistent with this difference in extent of dUTP accumulation was the observation that deoxyuridine triphosphatase levels in SW620 cellular extracts were 4.4-fold higher than in HT29 extracts. The ability to accumulate dUTP, intracellular deoxyuridine triphosphatase activity, and extent of DNA damage appear to be important determinants for predicting the response to FdUrd treatment in these cell lines.
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Affiliation(s)
- C E Canman
- Department of Pharmacology, University of Michigan Medical School, Ann Arbor 48109-0504
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