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Wu M, Pei Z, Sun W, Wu H, Sun Y, Wu B, Zhou W, Luo F, Lu W. Age-related reference intervals for serum phytosterols in children by gas chromatography-mass spectrometry and its application in diagnosing sitosterolemia. Clin Chim Acta 2023; 540:117234. [PMID: 36708942 DOI: 10.1016/j.cca.2023.117234] [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: 12/02/2022] [Revised: 01/19/2023] [Accepted: 01/20/2023] [Indexed: 01/26/2023]
Abstract
BACKGROUND AND AIMS Serum phytosterol profiles are essential for the diagnosis and management of sitosterolemia. However, pediatric reference interval (RI) studies are scarce and various mass spectrometry (MS) approaches for phytosterol analysis still face multiple limitations. Therefore, an optimized gas chromatography (GC)-MS assay and age-related RIs in children are both required. MATERIALS AND METHODS Cholesterol and phytosterols (sitosterol, campesterol, cholestanol, stigmasterol, and sitostanol) were simultaneously determined by optimized GC-MS and performance was verified by the lower limit of quantification (LLOQ), linearity, precision, recovery, matrix effects, and method comparison. Healthy children (247 males and 263 females) were recruited, sex and age dependence were assessed using quantile regression (2.5th percentile and 97.5th percentile), and RIs were established according to Clinical and Laboratory Standards Association guideline C28-A3. These RIs were validated in 19 patients with sitosterolemia and 23 patients with hypercholesterolemia. RESULTS The optimized method shortened the sample processing time by approximately 60 min. Among the five phytosterols, all precision, recoveries (ranging from 89.97% to 104.94%), and relative matrix effects (%CV: ranging from 0.08% to 13.88%) met the specifications. GC-MS showed good agreement with lower cholesterol concentrations compared to conventional enzymatic methods. No significant differences between males and females were observed for all phytosterols, but age dependency was found and age-related RIs were established accordingly. Five phytosterols were significantly higher than RIs in patients with sitosterolemia. CONCLUSION We established age-related RIs for five phytosterols in children based on an optimized GC-MS assay, providing a screening tool for the diagnosis of sitosterolemia in children.
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Affiliation(s)
- Mengyuan Wu
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China.
| | - Zhou Pei
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Weihua Sun
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Hongjiang Wu
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Yan Sun
- Department of Pediatrics, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong Province, China
| | - Bingbing Wu
- Center for Molecular Medicine, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China.
| | - Wenhao Zhou
- Department of Neonatology, Key Laboratory of Birth Defects, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Feihong Luo
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Wei Lu
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China.
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Yu M, Bean JC, Liu H, He Y, Yang Y, Cai X, Yu K, Pei Z, Liu H, Tu L, Conde KM, Wang M, Li Y, Yin N, Zhang N, Han J, Scarcelli NA, Xu P, He Y, Xu Y, Wang C. SK3 in POMC neurons plays a sexually dimorphic role in energy and glucose homeostasis. Cell Biosci 2022; 12:170. [PMID: 36210455 PMCID: PMC9549684 DOI: 10.1186/s13578-022-00907-2] [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: 06/10/2022] [Accepted: 09/27/2022] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Pro-opiomelanocortin (POMC) neurons play a sexually dimorphic role in body weight and glucose balance. However, the mechanisms for the sex differences in POMC neuron functions are not fully understood. RESULTS We detected small conductance calcium-activated potassium (SK) current in POMC neurons. Secondary analysis of published single-cell RNA-Seq data showed that POMC neurons abundantly express SK3, one SK channel subunit. To test whether SK3 in POMC neurons regulates POMC neuron functions on energy and glucose homeostasis, we used a Cre-loxP strategy to delete SK3 specifically from mature POMC neurons. POMC-specific deletion of SK3 did not affect body weight in either male or female mice. Interestingly, male mutant mice showed not only decreased food intake but also decreased physical activity, resulting in unchanged body weight. Further, POMC-specific SK3 deficiency impaired glucose balance specifically in female mice but not in male mice. Finally, no sex differences were detected in the expression of SK3 and SK current in total POMC neurons. However, we found higher SK current but lower SK3 positive neuron population in male POMC neurons co-expressing estrogen receptor α (ERα) compared to that in females. CONCLUSION These results revealed a sexually dimorphic role of SK3 in POMC neurons in both energy and glucose homeostasis independent of body weight control, which was associated with the sex difference of SK current in a subpopulation of POMC + ERα + neurons.
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Affiliation(s)
- Meng Yu
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Jonathan C. Bean
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Hailan Liu
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Yang He
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Yongjie Yang
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Xing Cai
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Kaifan Yu
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Zhou Pei
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Hesong Liu
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Longlong Tu
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Kristine M. Conde
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Mengjie Wang
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Yongxiang Li
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Na Yin
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Nan Zhang
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Junying Han
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Nikolas A. Scarcelli
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Pingwen Xu
- grid.185648.60000 0001 2175 0319Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, The University of Illinois at Chicago, Chicago, IL 60612 USA
| | - Yanlin He
- grid.64337.350000 0001 0662 7451Pennington Biomedical Research Center, Brain glycemic and metabolism control department, Louisiana State University, Baton Rouge, LA 70808 USA
| | - Yong Xu
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA ,grid.39382.330000 0001 2160 926XDepartment of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Chunmei Wang
- grid.39382.330000 0001 2160 926XChildren’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
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Gong Y, Li G, Tao J, Wu NN, Kandadi MR, Bi Y, Wang S, Pei Z, Ren J. Corrigendum to: "Double knockout of Akt2 and AMPK accentuates high fat diet-induced cardiac anomalies through a cGAS-STING-mediated mechanism" [Biochim Biophys Acta Mol. Basis Dis. 1866 2020; (10): 165855. PMID: 32512189]. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166457. [PMID: 35717934 DOI: 10.1016/j.bbadis.2022.166457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Yang Y, Zhang M, Yu J, Pei Z, Sun C, He J, Qian T, Luo F, Zhang S, Xu Z. Nationwide Trends of Pediatric Obesity and BMI z-Score From 2017-2021 in China: Comparable Findings From Real-World Mobile- and Hospital-Based Data. Front Endocrinol (Lausanne) 2022; 13:859245. [PMID: 35721754 PMCID: PMC9204322 DOI: 10.3389/fendo.2022.859245] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 04/20/2022] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Lifestyle changes including COVID-19 lockdown cause weight gain and may change obesity trends; however, timely changes are largely unknown and monitoring measures are usually lack. This first large-scale study aimed to analyze the real-world national trends of obesity prevalence of Chinese children in the past five years, and the impact of COVID-19 pandemic on pediatric obesity development through both mobile- and hospital-based data. METHODS This study included children aged 3 to 19 years old all over China from January 2017 to April 2021. Hospital-measured and parent-reported cases from XIGAO database were analyzed. Body mass index (BMI) z-score calculation and obesity status evaluation were made according to Chinese standards. We evaluated obesity/overweight prevalence over the past five years and the changes of BMI z-score during COVID-19 lockdown. RESULTS A total of 656396 children from 31 provinces were involved, including 447481 hospital-measured cases and 208915 parent-reported cases. The obesity and overweight prevalence were 8.05% (95%CI 7.76%-8.39%) and 10.06% (95%CI 10.79%-11.55%), comparable to those of China National Nutrition Surveys during 2015-2019. Northern China had the highest obesity prevalence. Parent-reported data had higher obesity/overweight prevalence than hospital-measured data (18.3% [95%CI 17.7%-18.9%] vs. 21.7% [95%CI 20.7%-23.0%]). The trend of obesity prevalence remained stable with slight decrease, but COVID-19 lockdown caused a significant increase of 1.86% in 2020. Both mobile- and hospital-based data showed weight gain in the first half of 2020. High BMI z-score increase were found among primary and junior middle school children, and children in northeast area during lockdown. CONCLUSION Weight gain during COVID-19 among Chinese children had regional differences and mainly affect primary and junior middle school children, thus warrants targeted interventions. The mobile growth assessment based on parent-reported data was a feasible, efficient and timely way for obesity monitoring among Chinese children, especially during epidemic.
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Affiliation(s)
- Yan Yang
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, China
| | - Miao Zhang
- Shijiazhuang Xigao Technology Co. Ltd., Shijiazhuang City, China
| | - Jian Yu
- Department of Integrative Medicine, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, China
| | - Zhou Pei
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, China
| | - Chengjun Sun
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, China
| | - Jingwei He
- Department of Integrative Medicine, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, China
| | - Tian Qian
- Department of Clinical Nutrition, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, China
| | - Feihong Luo
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, China
- *Correspondence: Feihong Luo, ; Shaoyan Zhang, ; Zhenran Xu,
| | - Shaoyan Zhang
- Shijiazhuang Xigao Technology Co. Ltd., Shijiazhuang City, China
- *Correspondence: Feihong Luo, ; Shaoyan Zhang, ; Zhenran Xu,
| | - Zhenran Xu
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai, China
- *Correspondence: Feihong Luo, ; Shaoyan Zhang, ; Zhenran Xu,
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Pei Z, He Y, Bean JC, Yang Y, Liu H, Yu M, Yu K, Hyseni I, Cai X, Liu H, Qu N, Tu L, Conde KM, Wang M, Li Y, Yin N, Zhang N, Han J, Potts CHS, Scarcelli NA, Yan Z, Xu P, Wu Q, He Y, Xu Y, Wang C. Gabra5 plays a sexually dimorphic role in POMC neuron activity and glucose balance. Front Endocrinol (Lausanne) 2022; 13:889122. [PMID: 36120438 PMCID: PMC9471380 DOI: 10.3389/fendo.2022.889122] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 08/15/2022] [Indexed: 11/25/2022] Open
Abstract
Pro-opiomelanocortin (POMC) neurons are important for the regulation of body weight and glucose balance. The inhibitory tone to POMC neurons is mediated primarily by the GABA receptors. However, the detailed mechanisms and functions of GABA receptors are not well understood. The α5 subunit of GABAA receptor, Gabra5, is reported to regulate feeding, and we found that Gabra5 is highly expressed in POMC neurons. To explore the function of Gabra5 in POMC neurons, we knocked down Gabra5 specifically from mature hypothalamic POMC neurons using the clustered regularly interspaced short palindromic repeats (CRISPR)-Cas9 strategy. This POMC-specific knock-down of Gabra5 did not affect body weight or food intake in either male or female mice. Interestingly, the loss of Gabra5 caused significant increases in the firing frequency and resting membrane potential, and a decrease in the amplitude of the miniature inhibitory postsynaptic current (mIPSC) in male POMC neurons. However, the loss of Gabra5 only modestly decreased the frequency of mIPSC in female POMC neurons. Consistently, POMC-specific knock-down of Gabra5 significantly improved glucose tolerance in male mice but not in female mice. These results revealed a sexually dimorphic role of Gabra5 in POMC neuron activity and glucose balance, independent of body weight control.
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Affiliation(s)
- Zhou Pei
- Department of Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Yang He
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Jonathan C. Bean
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Yongjie Yang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Hailan Liu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Meng Yu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Kaifan Yu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Ilirjana Hyseni
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Xing Cai
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Hesong Liu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Na Qu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Longlong Tu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Kristine M. Conde
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Mengjie Wang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Yongxiang Li
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Na Yin
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Nan Zhang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Junying Han
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Camille HS. Potts
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Nikolas A. Scarcelli
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Zili Yan
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Pingwen Xu
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, The University of Illinois at Chicago, Chicago, IL, United States
| | - Qi Wu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Yanlin He
- Pennington Biomedical Research Center, Brain Glycemic and Metabolism Control Department, Louisiana State University, Baton Rouge, LA, United States
| | - Yong Xu
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
- *Correspondence: Yong Xu, ; Chunmei Wang,
| | - Chunmei Wang
- Children’s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
- *Correspondence: Yong Xu, ; Chunmei Wang,
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Yang Y, He Y, Liu H, Zhou W, Wang C, Xu P, Cai X, Liu H, Yu K, Pei Z, Hyseni I, Fukuda M, Tong Q, Xu J, Sun Z, O'Malley BW, Xu Y. Hypothalamic steroid receptor coactivator-2 regulates adaptations to fasting and overnutrition. Cell Rep 2021; 37:110075. [PMID: 34879284 PMCID: PMC8715676 DOI: 10.1016/j.celrep.2021.110075] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 08/09/2021] [Accepted: 11/09/2021] [Indexed: 01/09/2023] Open
Abstract
The neuroendocrine system coordinates metabolic and behavioral adaptations to fasting, including reducing energy expenditure, promoting counterregulation, and suppressing satiation and anxiety to engage refeeding. Here, we show that steroid receptor coactivator-2 (SRC-2) in pro-opiomelanocortin (POMC) neurons is a key regulator of all these responses to fasting. POMC-specific deletion of SRC-2 enhances the basal excitability of POMC neurons; mutant mice fail to efficiently suppress energy expenditure during food deprivation. SRC-2 deficiency blunts electric responses of POMC neurons to glucose fluctuations, causing impaired counterregulation. When food becomes available, these mutant mice show insufficient refeeding associated with enhanced satiation and discoordination of anxiety and food-seeking behavior. SRC-2 coactivates Forkhead box protein O1 (FoxO1) to suppress POMC gene expression. POMC-specific deletion of SRC-2 protects mice from weight gain induced by an obesogenic diet feeding and/or FoxO1 overexpression. Collectively, we identify SRC-2 as a key molecule that coordinates multifaceted adaptive responses to food shortage.
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Affiliation(s)
- Yongjie Yang
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Yanlin He
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Hailan Liu
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Wenjun Zhou
- Department of Medicine, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Chunmei Wang
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Pingwen Xu
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Xing Cai
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Hesong Liu
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Kaifan Yu
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Zhou Pei
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Ilirjana Hyseni
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Makoto Fukuda
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Qingchun Tong
- Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Jianming Xu
- Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Zheng Sun
- Department of Medicine, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA; Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Bert W O'Malley
- Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Yong Xu
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA; Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA.
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Zhang MY, Ni JW, Ge JJ, Guan YH, Pei Z, Sun CJ, Wu J, Xu ZR, Yang L, Luo FH, Cheng RQ. [Clinical features of 123 patients with hyperinsulinemic hypoglycemia auxiliarily diagnosed by 18F-DOPA-PET CT scanning]. Zhonghua Er Ke Za Zhi 2021; 59:853-858. [PMID: 34587682 DOI: 10.3760/cma.j.cn112140-20210417-00326] [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: 06/13/2023]
Abstract
Objective: To summarize the clinical features and therapeutic outcomes of patients with hyperinsulinemic hypoglycemia (HH) auxiliarily diagnosed by 18F-DOPA positron emission tomography (PET) CT scanning. Methods: The clinical data of 123 patients who were diagnosed with hyperinsulinemic hypoglycemia by comprehensive clinical diagnostic procedures in the Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University between January 2016 and December 2020 were retrospectively analyzed. Clinical data such as gender, age of onset, province, concurrent serum insulin level measured during hypoglycemia, lesion type of pancreas by 18F-DOPA-PET CT scanning, genetic test results, and treatment were collected successively. The clinical features and therapeutic outcomes were compared between patients with focal and diffuse pancreatic lesions. T test, Rank sum test, and χ² test were used for comparison between groups. Results: A total of 123 patients with hyperinsulinemic hypoglycemia (72 males and 51 females), whose average age of onset was 3 days (ranging from 1 day to 4 860 days), were recruited from 24 provinces. The concurrent serum insulin level was 7.1 (0.4-303.0) mU/L during hypoglycemia. 18F-DOPA-PET CT scanning identified focal lesions in 25.2% (31/123) and diffuse lesions in 74.8% (92/123) of the patients; 64.2% (79/123) of the HH cases were found to have pathogenic gene variants, in which 88.6% (70/79) were found to have KATP channel related genes (61 in ABCC8 and 9 in KCNJ11 mutations). Thirty-seven patients (17 focal and 20 diffuse) received surgical treatment with a success rate of 67.6% (25/37). The effective rate of diazoxide for children with diffuse type was significantly higher than that of children with focal group (28.3% (26/92) vs. 9.7% (3/31), χ²=10.31, P=0.001). Conclusions: 18F-DOPA-PET CT scan can improve the success rate of surgery. Comprehensive diagnosis of the etiology of hyperinsulinemic hypoglycemia by genetic analysis and 18F-DOPA-PET CT scanning can result in better treatment and prognosis.
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Affiliation(s)
- M Y Zhang
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - J W Ni
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - J J Ge
- PET Center, Huashan Hospital of Fudan University, Shanghai 200235, China
| | - Y H Guan
- PET Center, Huashan Hospital of Fudan University, Shanghai 200235, China
| | - Z Pei
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - C J Sun
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - J Wu
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Z R Xu
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - L Yang
- the Molecular Genetic Diagnosis Center, Pediatrics Research Institute, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - F H Luo
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - R Q Cheng
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
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Xu ZR, Du HW, Cui LW, Zheng RX, Li GM, Wei HY, Lu FY, Chen LL, Wu CS, Zhang SX, Zhang SL, Liu F, Zhang MY, Pei Z, Sun CJ, Wu J, Luo FH. Association of β-cell function and insulin resistance with pediatric type 2 diabetes among Chinese children. World J Diabetes 2021; 12:1292-1303. [PMID: 34512894 PMCID: PMC8394231 DOI: 10.4239/wjd.v12.i8.1292] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 06/15/2021] [Accepted: 07/13/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND In addition to insulin resistance, impaired insulin secretion has recently been identified as a crucial factor in the pathogenesis of type 2 diabetes mellitus (T2DM). Scarce clinical data exist for pediatric T2DM.
AIM To investigate the association of β-cell function and insulin resistance with pediatric T2DM in the first Chinese multicenter study.
METHODS This multicenter cross-sectional study included 161 newly diagnosed T2DM children and adolescents between January 2017 and October 2019. Children with normal glycemic levels (n = 1935) were included as healthy control subjects. The homeostasis models (HOMAs) were used to assess the β-cell function (HOMA2-%B) and insulin resistance (HOMA2-IR) levels. The HOMA index was standardized by sex and age. We performed logistic regression analysis to obtain odds ratios (ORs) for T2DM risk using the standardized HOMA index, adjusted for confounding factors including sex, Tanner stage, T2DM family history, body mass index z-score, and lipid profile.
RESULTS The male-female ratio of newly diagnosed T2DM patients was 1.37:1 (OR = 2.20, P = 0.011), and the mean ages of onset for boys and girls were 12.5 ± 1.9 years and 12.3 ± 1.7 years, respectively. The prevalence of related comorbidities including obesity, elevated blood pressure, and dyslipidemia was 58.2%, 53.2%, and 80.0%, respectively. The T2DM group had lower HOMA2-%B levels (P < 0.001) and higher HOMA2-IR levels (P < 0.001) than the control group. Both the decrease in HOMA2-%B z-score (OR = 8.40, 95%CI: 6.40–11.02, P < 0.001) and the increase in HOMA2-IR z-score (OR = 1.79, 95%CI: 1.60–2.02, P < 0.001) were associated with a higher risk of T2DM, and the decrease in HOMA2-%B z-score always had higher ORs than the increase in HOMA2-IR z-score after adjusting for confounding factors.
CONCLUSION Besides insulin resistance, β-cell function impairment is also strongly associated with Chinese pediatric T2DM. Gender difference in susceptibility and high comorbidities warrant specific T2DM screening and prevention strategies in Chinese children.
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Affiliation(s)
- Zhen-Ran Xu
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai 201102, China
| | - Hong-Wei Du
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, The First Bethune Hospital of Jilin University, Changchun 130021, Jilin Province, China
| | - Lan-Wei Cui
- Department of Pediatrics, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Rong-Xiu Zheng
- Department of Pediatrics, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Gui-Mei Li
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong Province, China
| | - Hai-Yan Wei
- Department of Endocrinology, Henan Children's Hospital, Zhengzhou 450052, Henan Province, China
| | - Fei-Yu Lu
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, The First Bethune Hospital of Jilin University, Changchun 130021, Jilin Province, China
| | - Li-Li Chen
- Department of Pediatrics, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang Province, China
| | - Chu-Shan Wu
- Department of Pediatrics, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Shu-Xin Zhang
- Department of Pediatrics, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Shu-Le Zhang
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong Province, China
| | - Fang Liu
- Department of Endocrinology, Henan Children's Hospital, Zhengzhou 450052, Henan Province, China
| | - Miao-Ying Zhang
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai 201102, China
| | - Zhou Pei
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai 201102, China
| | - Cheng-Jun Sun
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai 201102, China
| | - Jing Wu
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai 201102, China
| | - Fei-Hong Luo
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, National Children’s Medical Center, Children’s Hospital of Fudan University, Shanghai 201102, China
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Chadwick E, Le K, Pei Z, Sayahi T, Rapp C, Butterfield AE, Kelly KE. Technical note: Understanding the effect of COVID-19 on particle pollution using a low-cost sensor network. J Aerosol Sci 2021; 155:105766. [PMID: 33897001 PMCID: PMC8054662 DOI: 10.1016/j.jaerosci.2021.105766] [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] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 01/01/2021] [Accepted: 01/23/2021] [Indexed: 05/17/2023]
Abstract
The 2020 coronavirus pandemic and the following quarantine measures have led to significant changes in daily life worldwide. Preliminary research indicates that air quality has improved in many urban areas as a result of these measures. This study takes a neighborhood-scale approach to quantifying this change in pollution. Using data from a network of citizen-hosted, low-cost particulate matter (PM) sensors, called Air Quality & yoU (AQ&U), we obtained high-spatial resolution measurements compared to the relatively sparse state monitoring stations. We compared monthly average estimated PM2.5 concentrations from February 11 to May 11, 2019 at 71 unique locations in Salt Lake County, UT, USA with the same (71) sensors' measurements during the same timeframe in 2020. A paired t-test showed significant reductions (71.1% and 21.3%) in estimated monthly PM2.5 concentrations from 2019 to 2020 for the periods from March 11-April 10 and April 11-May 10, respectively. The March time period corresponded to the most stringent COVID-19 related restrictions in this region. Significant decreases in PM2.5 were also reported by state monitoring sites during March (p < 0.001 compared to the previous 5-year average). While we observed decreases in PM2.5 concentrations across the valley in 2020, it is important to note that the PM2.5 concentrations did not improve equally in all locations. We observed the greatest reductions at lower elevation, more urbanized areas, likely because of the already low levels of PM2.5 at the higher elevation, more residential areas, which were generally below 2 μg/m3 in both 2019 and 2020. Although many of measurements during March and April were near or below the estimated detection limit of the low-cost PM sensors and the federal equivalent measurements, every low-cost sensor (51) showed a reduction in PM2.5 concentration in March of 2020 compared to 2019. These results suggest that the air quality improvement seen after March 11, 2020 is due to quarantine measures reducing traffic and decreasing pollutant emissions in the region.
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Affiliation(s)
- E Chadwick
- Department of Chemical Engineering, University of Utah, Salt Lake City, UT, USA
| | - K Le
- Department of Chemical Engineering, University of Utah, Salt Lake City, UT, USA
| | - Z Pei
- Department of Chemical Engineering, University of Utah, Salt Lake City, UT, USA
| | - T Sayahi
- Department of Chemical Engineering, University of Utah, Salt Lake City, UT, USA
| | - C Rapp
- Department of Atmospheric Sciences, University of Utah, Salt Lake City, UT, USA
| | - A E Butterfield
- Department of Chemical Engineering, University of Utah, Salt Lake City, UT, USA
| | - K E Kelly
- Department of Chemical Engineering, University of Utah, Salt Lake City, UT, USA
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10
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Li X, Li X, Zeng T, Liu Y, Hu T, Huang J, Wu Y, Yu J, Pei Z, Tan L. The clinical value of serum sirtuin-1 in the diagnosis of rheumatoid arthritis: a pilot study. Br J Biomed Sci 2021; 78:191-194. [PMID: 33507129 DOI: 10.1080/09674845.2021.1880085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Introduction: Cell biology studies, animal models and other data suggest a role for sirtuin-1 in the pathogenesis of rheumatoid arthritis (RA). We hypothesized the clinical significance of serum sirtuin-1 in this disease.Methods: Serum was obtained from 141 RA patients, 144 non-RA patients and 88 healthy controls. Sirtuin-1, anti-mutant citrulline vimentin antibody (anti-MCV), anti-cyclic citrulline polypeptide antibody (anti-CCP), rheumatoid factor and C-reactive protein were measured by immunological methods, and erythrocyte sedimentation rate was determined by the Westergren method.Results: All markers were higher in the RA group than in the non-RA group and the healthy control group (P < 0.01). The specificity of sirtuin-1 for the diagnosis of RA was 97% (the highest among all markers), sensitivity was 71%. In ROC curve analysis, the AUCs (95% CI) of sirtuin-1, anti-CCP and anti-MCV were 0.87 (0.82-0.91), 0.91 (0.88-0.94) and 0.92 (0.89-0.95) respectively (all p < 0.01). The combination of sirtuin-1and anti-MCV gave the highest Youden index of 0.79, whilst Cox regression showed sirtuin-1 and rheumatoid factor were the strongest independent predictors of RA.Conclusions: Serum sirtuin-1 is increased in RA, and may have a place is the diagnosis of this disease when combined with other markers.
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Affiliation(s)
- X Li
- Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - X Li
- Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - T Zeng
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Y Liu
- Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - T Hu
- Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - J Huang
- Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Y Wu
- Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - J Yu
- Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Z Pei
- Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - L Tan
- Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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11
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Chen X, Pei Z, Zhang M, Xu Z, Zhao Z, Lu W, Chen L, Luo F, Chen T, Sun C. Glycated Hemoglobin (HbA1c) Concentrations Among Children and Adolescents With Diabetes in Middle- and Low-Income Countries, 2010-2019: A Retrospective Chart Review and Systematic Review of Literature. Front Endocrinol (Lausanne) 2021; 12:651589. [PMID: 33912137 PMCID: PMC8072468 DOI: 10.3389/fendo.2021.651589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 03/12/2021] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVES To explore the glycemic control [represented by glycated hemoglobin (HbA1c) concentrations] in children with diabetes mellitus (DM) in east China and middle- and low-income countries, from 2010 to 2019. METHODS Retrospective data of children with DM from two hospital-based health records were reviewed. Data on HbA1c concentrations, hospitalization due to diabetic ketoacidosis, and patient demographics were collected and analyzed. A systematic review was subsequently performed to analyze publications that report HbA1c concentrations in patients aged <18 years. Patients' characteristics extracted from each publication were used to generate simulated individual data for pooled analysis. HbA1c estimates were derived from steady-state iterations. RESULTS Data of 843 diabetic children (aged 11.2 ± 3.9 years) with 2,658 HbA1c measures were retrieved from the two hospitals during the period 2010-2020. The duration of diabetes in the patients was 4.4 ± 2.8 years, and their HbA1c was 8.1 ± 2.2%. Patients who were internal migrants had significantly higher HbA1c concentration than resident patients (8.4 vs. 7.9%). The literature review yielded 1,164 publications, and the majority (74.1%) of patient data were published in high-income countries. The patient data extracted from these publications generated 486,416 HbA1c concentration estimates between 2005 and 2019. The average HbA1c concentration during the 15 years was 9.07 ± 2.15%. The mean HbA1c concentrations among children were 8.23, 8.73, 9.20, and 10.11% in high-income country (HIC), upper-middle income country (UMIC), lower-middle income country (LMIC), and low-income country (LIC) respectively. The mean rate of optimized glycemic control (HbA1c <7.5%) among children was 32.4, 27.5, 21.7, and 12.7% in HIC, UMIC, LMIC, and LIC, respectively. CONCLUSIONS The current study indicated that there is substantial room for improvement in glycemic control in children with DM worldwide, especially in middle- and low-income countries.
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Affiliation(s)
- Xiuli Chen
- Department of Endocrinology, Genetics and Metabolism, Children’s Hospital of Soochow University, Suzhou, China
| | - Zhou Pei
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
| | - Miaoying Zhang
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
| | - Zhenran Xu
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
| | - Zhuhui Zhao
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
| | - Wei Lu
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
| | - Linqi Chen
- Department of Endocrinology, Genetics and Metabolism, Children’s Hospital of Soochow University, Suzhou, China
| | - Feihong Luo
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
| | - Ting Chen
- Department of Endocrinology, Genetics and Metabolism, Children’s Hospital of Soochow University, Suzhou, China
| | - Chengjun Sun
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
- *Correspondence: Chengjun Sun,
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12
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Chen X, Pei Z, Zhang M, Xu Z, Zhao Z, Lu W, Chen L, Luo F, Chen T, Sun C. Corrigendum: Glycated Hemoglobin (HbA1c) Concentrations Among Children and Adolescents With Diabetes in Middle- and Low-Income Countries, 2010-2019: A Retrospective Chart Review and Systematic Review of Literature. Front Endocrinol (Lausanne) 2021; 12:714389. [PMID: 34603202 PMCID: PMC8485776 DOI: 10.3389/fendo.2021.714389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 09/06/2021] [Indexed: 11/17/2022] Open
Abstract
[This corrects the article DOI: 10.3389/fendo.2021.651589.].
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Affiliation(s)
- Xiuli Chen
- Department of Endocrinology, Genetics and Metabolism, Children’s Hospital of Soochow University, Suzhou, China
| | - Zhou Pei
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
| | - Miaoying Zhang
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
| | - Zhenran Xu
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
| | - Zhuhui Zhao
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
| | - Wei Lu
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
| | - Linqi Chen
- Department of Endocrinology, Genetics and Metabolism, Children’s Hospital of Soochow University, Suzhou, China
| | - Feihong Luo
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
| | - Ting Chen
- Department of Endocrinology, Genetics and Metabolism, Children’s Hospital of Soochow University, Suzhou, China
| | - Chengjun Sun
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, Shanghai, China
- *Correspondence: Chengjun Sun,
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13
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Fei F, Sun S, Li Q, Pei Z, Wang L, Zhang R, Luo F, Yu M, Wang X. Combinatorial Normalization of Liver-Derived Cytokine Pathways Alleviates Hepatic Tumor-Associated Cachexia in Zebrafish. Cancer Res 2020; 81:873-884. [PMID: 33355239 DOI: 10.1158/0008-5472.can-20-2818] [Citation(s) in RCA: 2] [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] [Received: 08/18/2020] [Revised: 11/10/2020] [Accepted: 12/14/2020] [Indexed: 11/16/2022]
Abstract
The role and significance of liver-derived cytokines in cancer-associated cachexia syndrome remain elusive. Here we report that combinatorial counterbalances of the leptin and Igf1 signaling pathways in hepatocellular carcinoma (HCC) models significantly relieves cachexia. Double transgenic zebrafish models of HCC that stably displayed focal lesions, anorexia, and wasting of adipose and muscle tissues were first generated. Knockout of lepr or mc4r from these zebrafish partially restored appetite and exerted moderate or no effect on tissue wasting. However, genetic replenishment of Igf1 in a lepr-mutant background effectively relieved the cachexia-like phenotype without affecting tumor growth. Similarly, administration of napabucasin, a Stat3/Socs3 inhibitor, on the zebrafish HCC model, mammalian cell lines with exogenous IGF1, and two mouse xenograft models restored insulin sensitivity and rescued the wasting of nontumor tissues. Together, these results describe the synergistic impact of leptin and Igf1 normalization in treating certain HCC-associated cachexia as a practical strategy. SIGNIFICANCE: Disruption of leptin signaling with normalized Igf1 expression significantly rescues anorexia, muscle wasting, and adipose wasting in Ras- and Myc-driven zebrafish models of HCC.
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Affiliation(s)
- Fei Fei
- Department of Pancreatic Surgery, Pancreatic Cancer Institute, Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Shanghai Pancreatic Cancer Institute, Shanghai, China.,Department of Rheumatology and Immunology, the Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Shaoyang Sun
- Department of Pancreatic Surgery, Pancreatic Cancer Institute, Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Shanghai Pancreatic Cancer Institute, Shanghai, China
| | - Qiang Li
- Translational Medical Center for Development and Disease, Shanghai Key Laboratory of Birth Defect, Institute of Pediatrics, Children' Hospital of Fudan University, Shanghai, China
| | - Zhou Pei
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Lei Wang
- Department of Pancreatic Surgery, Pancreatic Cancer Institute, Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Shanghai Pancreatic Cancer Institute, Shanghai, China
| | - Ranran Zhang
- Department of Oncology, Shanghai Medical College, Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Department of Pediatrics, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Feihong Luo
- Department of Pediatrics, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Min Yu
- Department of Oncology, Shanghai Medical College, Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Xu Wang
- Department of Pancreatic Surgery, Pancreatic Cancer Institute, Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China. .,Department of Oncology, Shanghai Medical College, Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Shanghai Pancreatic Cancer Institute, Shanghai, China
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14
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Sun C, Xu D, Pei Z, Yang L, Qiao Z, Lu W, Luo F, Qiu Z. Separation in genetic pathogenesis of mutations in FBN1-TB5 region between autosomal dominant acromelic dysplasia and Marfan syndrome. Birth Defects Res 2020; 112:1834-1842. [PMID: 33030311 DOI: 10.1002/bdr2.1814] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 09/16/2020] [Accepted: 09/21/2020] [Indexed: 11/07/2022]
Abstract
Mutations in the transforming growth factor β-binding protein-like domain 5 (TB5) region of FBN1 can lead to autosomal acromelic dysplasia and Marfan syndrome, which are two diseases with apparently opposite phenotypes. We identified six patients with acromelic dysplasia carrying either the previously reported mutations c.5284G > A (p.Gly1762Ser) and c.5096A > G (p.Tyr1699Cys) or the novel mutation c.5260G > A (p.Gly1754Ser). A systematic review of patients with mutations in the FBN1-TB5 region showed that acromelic dysplasia is caused only by in-frame amino acid substitutions. In contrast, truncating mutations in the FBN1-TB5 have been reported only in Marfan syndrome. Acromelic dysplasia subtypes that share symptoms with Marfan syndrome are associated with FBN1-TB5 disulfide disruptions, which are also commonly found in Marfan syndrome. These results suggest that the type and location of mutations in the FBN1-TB5 region determine the clinical spectrum of fibrillinopathy.
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Affiliation(s)
- Chengjun Sun
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Dandan Xu
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Zhou Pei
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Lin Yang
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China.,The Molecular Genetic Diagnosis Center, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Zhongwei Qiao
- Department of Radiology, Children's Hospital of Fudan University, Shanghai, China
| | - Wei Lu
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Feihong Luo
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Zhengqing Qiu
- Department of Pediatrics, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
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15
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Zhang Y, Yu S, Ying X, Jia B, Liu L, Liu J, Kong L, Pei Z, Ma H. iTRAQ-based quantitative proteomics analysis reveals inhibitory mechanismsof the antimicrobial peptide MDAP-2 against Salmonella gallinarum. Pol J Vet Sci 2020; 23:405-414. [PMID: 33006863 DOI: 10.24425/pjvs.2020.134685] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
MDAP-2 is a new AMP with high inhibitory activity on Salmonella gallinarum, which may be developed as an antimicrobial agent in the agricultural industry and food preservation. To investigate the underlying the action mechanism of MDAP-2 on Salmonella gallinarum, impacts of MDAP-2 on the growth curve and bacterial morphology of Salmonella gallinarum were studied. iTRAQ-based proteomics analysis was also performed on proteins extracted from treated and untreated Salmonella gallinarum cells. The differentially expressed proteins were then analyzed using the KEGG and GO databases. Finally, the function of some differentially expressed proteins was verified. The results showed that 150 proteins (41 up-regulated and 109 down-regulated) were found differentially expressed (fold > 1.8, p⟨0.05). The results indi- cate that MDAP-2 kills Salmonella gallinarum mainly through two mechanisms: (i) direct inhibi- tion of cell wall/ membrane/ envelope biogenesis, energy production/ conversion, carbohydrate transport/ metabolism, and DNA transcription/ translation through regulation of special protein levels; (ii) indirect effects on the same pathway through the accumulation of Reactive oxygen species (O2 ▪-, H2O2 and OH▪-).
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Affiliation(s)
- Y Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street No. 2888, Changchun 130118, PR China
| | - S Yu
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street No. 2888, Changchun 130118, PR China
| | - X Ying
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street No. 2888, Changchun 130118, PR China
| | - B Jia
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street No. 2888, Changchun 130118, PR China
| | - L Liu
- Jilin Medical University, Jilin Street No. 5, Jilin 132013, PR China
| | - J Liu
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street No. 2888, Changchun 130118, PR China
| | - L Kong
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street No. 2888, Changchun 130118, PR China
| | - Z Pei
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street No. 2888, Changchun 130118, PR China
| | - H Ma
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street No. 2888, Changchun 130118, PR China
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Zhang M, Sun C, Liu R, Dong C, Cheng R, Zheng Z, Wu B, Luo F, Pei Z, Lu W. Phenotypes and epigenetic errors in patients with Beckwith-Wiedemann syndrome in China. Transl Pediatr 2020; 9:653-661. [PMID: 33209728 PMCID: PMC7658761 DOI: 10.21037/tp-20-243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Beckwith-Wiedemann syndrome (BWS) is primarily caused by epigenetic errors. This study aimed to analyze the relationship between the epigenetic errors and phenotypes of BWS and to evaluate the efficacy of diagnosing BWS using patients' clinical characteristics. METHODS Patients clinically diagnosed with BWS were subjected to methylation-specific multiplex ligation-dependent probe amplification (MS-MLPA) for (epi)genotyping. The patients' clinical characteristics were analyzed and compared using regression models. The diagnostic efficacy of previous criteria and scoring systems was compared using area under the receiving operating curve (ROC). RESULTS The most common clinical features observed in BWS patients were macroglossia (83.2%), abdominal wall defects (71.3%), and ear creases/pits (55.3%). Patients with the loss of methylation at imprinting control 2 (IC2-LOM) and gaining of methylation at imprinting control 1 (IC1-GOM) subtypes had significantly higher frequencies of ear creases/pits and facial nevus flammeus, and visceromegaly, respectively. Paternal uniparental isodisomy (pUPD) was characterized by significantly less macroglossia but more hemihypertrophy. The area under the curve (AUC) was comparably good in both recently developed scoring systems (0.87 for Ibrahim and 0.82 for Brioude.) and in the scoring system developed using the current cohort (0.88). CONCLUSIONS This study, which is the largest cohort study of BWS cases in China published to date, confirmed the diagnostic efficacy of a recently developed symptom-based BWS scoring system in a Chinese population. Significant differences exist between the phenotypes of BWS epigenetic subtypes; however, the pattern is similar between Asian and European populations.
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Affiliation(s)
- Miaoying Zhang
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Chengjun Sun
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Renchao Liu
- The Molecular Genetic Diagnosis Center, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Chenbin Dong
- Plastic Surgery Department, Children's Hospital of Fudan University, Shanghai, China
| | - Ruoqian Cheng
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Zhangqian Zheng
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Bingbing Wu
- The Molecular Genetic Diagnosis Center, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Feihong Luo
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Zhou Pei
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Wei Lu
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
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Wei H, Zhan LP, Zhang B, Li YP, Pei Z, Li L. dl-3n-butylphthalide reduces oxygen-glucose deprivation-induced endothelial cell damage by increasing PGC-1α. Eur Rev Med Pharmacol Sci 2020; 23:4481-4490. [PMID: 31173325 DOI: 10.26355/eurrev_201905_17960] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Animal experiments verified that dl-3-n-butylphthalide (NBP) can protect vascular endothelial cells from ischemic damage and promote vascular proliferation in ischemic stroke treatment, but the underlying mechanism has not been fully clarified. This study aimed to investigate the effects of NBP on peroxisome proliferators-activated receptor-γ coactivator-1α (PGC-1α) expression in endothelial cells exposed to oxygen-glucose deprivation (OGD) and to clarify the related molecular mechanism. MATERIALS AND METHODS SV40-transformed aortic rat endothelial cell line was cultured and subjected to OGD in the presence or absence of NBP. The cell viability was evaluated by using thiazolyl blue tetrazolium bromide (MTT) method. The cellular endothelial nitric oxide synthase (eNOS) activity was measured by using eNOS activity assay. The nuclear changes were assessed with Hoechst 33342 fluorescent dye. The immunofluorescence analysis and Western blotting assay were conducted to evaluate the protein expression. RESULTS We found that NBP could significantly prevent endothelial cells from OGD-induced injuries, in terms of cell morphology and cell viability. Both immunofluorescence analysis and Western blot findings confirmed that the NBP treatment further enhanced PGC-1α expression during OGD, which was prevented in the presence of selective endothelial nitric oxide synthetase (eNOS) inhibitor N5-(1-Iminoethyl)-L-ornithine-HCL (L-NIO). Furthermore, we found that NBP could protect the eNOS activity about by 40% during OGD and did not influence the eNOS protein level in the spectrophotometric-based analysis. CONCLUSIONS NBP maintained the endothelial PGC-1α expression via regulating eNOS activity during the exposure to OGD; therefore, it presented its protective function to cell viability and vascular proliferation.
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Affiliation(s)
- H Wei
- Department of Neurology, Affiliated Yan'an Hospital of Kunming Medical University, Cardiovascular Disease Hospital of Yunnan Province, Kunming, China.
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Hu T, Liu Y, Tan L, Huang J, Yu J, Wu Y, Pei Z, Zhang X, Li J, Song L, Dai W, Xiang Y. Value of serum collagen triple helix repeat containing-1(CTHRC1) and 14-3-3η protein compared to anti-CCP antibodies and anti-MCV antibodies in the diagnosis of rheumatoid arthritis. Br J Biomed Sci 2020; 78:67-71. [PMID: 32813981 DOI: 10.1080/09674845.2020.1810400] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
INTRODUCTION Serological markers are important in the diagnosis of rheumatoid arthritis (RA) and other connective tissues diseases This study explored the clinical value of collagen triple helix repeat containing-1 (CTHRC1) and 14-3-3η protein, compared to routine markers, in the diagnosis of RA. METHODS We recruited 103 RA patients, 105 non-RA patients (osteoarthritis, ankylosing spondylitis, systemic lupus erythematosus) and 59 healthy controls. CTHRC1, 14-3-3η, anti-cyclic citrullinated peptide antibody (anti-CCP), anti-mutated citrullinated vimentin antibody (anti-MCV), rheumatoid factor and erythrocyte sedimentation rate (ESR) levels were measured, and their diagnostic value for RA evaluated and compared. RESULTS All laboratory indices were elevated in RA (P < 0.05). Of these, anti-MCV had the highest sensitivity (86.4%) and anti-CCP the highest specificity (94.5%). The areas under the curve (AUC) of CTHRC1, 14-3-3η, anti-CCP, anti-MCV, rheumatoid factor and ESR were 0.84, 0.81, 0.89, 0.91, 0.85 and 0.77 respectively (all P < 0.01). Anti-CCP and anti-MCV were the most valuable in the diagnosis of RA. The combination of anti-CCP and anti-MCV had the maximum Youden index, followed by the combination of anti-CCP and 14-3-3η. Binary logistic regression analysis showed that 14-3-3η had the largest odds ratio value (95% CI) at 5.1 (2.1-12.5) for RA. CONCLUSION CTHRC1 and 14-3-3η are promising serological indicators of RA, and when combined with anti-CCP, anti-MCV and ESR, can improve the diagnosis of this disease.
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Affiliation(s)
- T Hu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University , Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Laboratory Medicine , Nanchang, China
| | - Y Liu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University , Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Laboratory Medicine , Nanchang, China
| | - L Tan
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University , Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Laboratory Medicine , Nanchang, China
| | - J Huang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University , Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Laboratory Medicine , Nanchang, China
| | - J Yu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University , Nanchang, Jiangxi, China
| | - Y Wu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University , Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Laboratory Medicine , Nanchang, China
| | - Z Pei
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University , Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Laboratory Medicine , Nanchang, China
| | - X Zhang
- Second Affiliated Hospital of Nanchang University. Department of Clinical Laboratory, The Third Hospital of Nanchang City , Nanchang, Jiangxi Province, China
| | - J Li
- Gannan Health and Vocational College, Ganzhou, China
| | - L Song
- Department of Clinical Laboratory, The Ganzhou People's Hospital, Ganzhou, China
| | - W Dai
- Department of Clinical Laboratory, The Ganzhou People's Hospital, Ganzhou, China
| | - Y Xiang
- Department of Clinical Laboratory, the Yingtan People's Hospital, Yingtan, Jiangxi, China
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Shen L, Li J, Miao Z, Xu N, Liu B, Li X, Zhang Q, Gao Q, Zhao Y, Pan H, Pei Z, Li W, Xia H, Wang J, Dai H, Shi Q, Yang J. 1445P CS1001, an anti-PD-L1 antibody, combined with standard of care (SOC) chemotherapy for first line (1L) advanced GC/GEJ and ESCC: Preliminary results from 2 phase Ib cohorts of CS1001-101 study. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1951] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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20
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Yu K, He Y, Hyseni I, Pei Z, Yang Y, Xu P, Cai X, Liu H, Qu N, Liu H, He Y, Yu M, Liang C, Yang T, Wang J, Gourdy P, Arnal JF, Lenfant F, Xu Y, Wang C. 17β-estradiol promotes acute refeeding in hungry mice via membrane-initiated ERα signaling. Mol Metab 2020; 42:101053. [PMID: 32712433 PMCID: PMC7484552 DOI: 10.1016/j.molmet.2020.101053] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 07/17/2020] [Accepted: 07/19/2020] [Indexed: 12/20/2022] Open
Abstract
Objective Estrogen protects animals from obesity through estrogen receptor α (ERα), partially by inhibiting overeating in animals fed ad libitum. However, the effects of estrogen on feeding behavior in hungry animals remain unclear. In this study, we examined the roles of 17β-estradiol (E2) and ERα in the regulation of feeding in hungry female animals and explored the underlying mechanisms. Methods Wild-type female mice with surgical depletion of endogenous estrogens were used to examine the effects of E2 supplementation on acute refeeding behavior after starvation. ERα-C451A mutant mice deficient in membrane-bound ERα activity and ERα-AF20 mutant mice lacking ERα transcriptional activity were used to further examine mechanisms underlying acute feeding triggered by either fasting or central glucopenia (induced by intracerebroventricular injections of 2-deoxy-D-glucose). We also used electrophysiology to explore the impact of these ERα mutations on the neural activities of ERα neurons in the hypothalamus. Results In the wild-type female mice, ovariectomy reduced fasting-induced refeeding, which was restored by E2 supplementation. The ERα-C451A mutation, but not the ERα-AF20 mutation, attenuated acute feeding induced by either fasting or central glucopenia. The ERα-C451A mutation consistently impaired the neural responses of hypothalamic ERα neurons to hypoglycemia. Conclusion In addition to previous evidence that estrogen reduces deviations in energy balance by inhibiting eating at a satiated state, our findings demonstrate the unexpected role of E2 that promotes eating in hungry mice, also contributing to the stability of energy homeostasis. This latter effect specifically requires membrane-bound ERα activity. Endogenous E2 is required to maintain acute refeeding in hungry female mice after starvation. Membrane-bound ERα activity in female mice is required for efficient refeeding after starvation. Membrane-bound ERα activity is required for hypothalamic ERα neurons to respond to hypoglycemia.
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Affiliation(s)
- Kaifan Yu
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA; College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Yanlin He
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA; Pennington Biomedical Research Center, Brain Glycemic and Metabolism Control Department, Louisiana State University, Baton Rouge, LA, 70808, USA
| | - Ilirjana Hyseni
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Zhou Pei
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Yongjie Yang
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Pingwen Xu
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Xing Cai
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Hesong Liu
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Na Qu
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Hailan Liu
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Yang He
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Meng Yu
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Chen Liang
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Tingting Yang
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Julia Wang
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Pierre Gourdy
- I2MC, Inserm U1048, CHU de Toulouse and Université de Toulouse III, Toulouse, France
| | - Jean-Francois Arnal
- I2MC, Inserm U1048, CHU de Toulouse and Université de Toulouse III, Toulouse, France
| | - Francoise Lenfant
- I2MC, Inserm U1048, CHU de Toulouse and Université de Toulouse III, Toulouse, France
| | - Yong Xu
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA; Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
| | - Chunmei Wang
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
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Zheng Z, Lu W, Pei Z, Chen J, Yang T, Luo F. Generation of an induced pluripotent stem cell line (CHFUi001-A) from an osteogenesis imperfecta patient with COL1A2 mutation. Stem Cell Res 2020; 47:101907. [PMID: 32659730 DOI: 10.1016/j.scr.2020.101907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 06/30/2020] [Indexed: 11/15/2022] Open
Abstract
Osteogenesis Imperfecta (OI) is a rare autosomal dominant metabolic disorder caused by heterozygous mutations in the COL1A1 or COL1A2 genes, which encode the pro-α1(I) and pro-α2(I) chains of type I procollagen, respectively. A human induced pluripotent stem cell (iPSC) line, termed as CHFUi001-A, was generated from peripheral blood mononuclear cells (PBMCs) of a 5-year-old female patient with OI, who had a heterozygous (c.928G > A:p.G328S) mutation in the COL1A2 gene, using non-integrating episomal vector technique. CHFUi001-A offers a useful resource to investigate pathogenic mechanisms in OI, as well as a cell-based model for drug development to treat OI.
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Affiliation(s)
- Zhangqian Zheng
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Wei Lu
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Zhou Pei
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Jun Chen
- Shanghai Gemple Biotechnology Co, LTD, China
| | - Tong Yang
- Shanghai Gemple Biotechnology Co, LTD, China.
| | - Feihong Luo
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China.
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22
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Pei Z, Ding ZT, Li Z, Guan ZP. [Comparison of the early efficacy of unicompartmental and total knee arthroplasty in patients with medial compartmental osteoarthritis of the knee: a propensity score matching study]. Zhonghua Wai Ke Za Zhi 2020; 58:452-456. [PMID: 32498485 DOI: 10.3760/cma.j.cn112139-20200322-00244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the short-term efficacy of unicompartmental knee arthroplasty (UKA) and total knee arthroplasty(TKA) in the treatment of medial compartmental knee osteoarthritis. Methods: A retrospective analysis was performed on 197 patients with medial compartment osteoarthritis of the knee treated by the same group of doctors from January 2015 to December 2018.There were 86 males and 111 females, aged (67.7±10.5) years (range: 46 to 92 years), among which 101 cases received UKA and 96 cases received TKA.The UKA and TKA patients were matched by the propensity score matching method, and a total of 41 pairs of patients were successfully matched.The difference of short-term outcomes between the two groups were compared by t test, χ(2) test or Fisher exact probability methods. Results: Compared with TKA group, the postoperative reduction of hemogloblin in the UKA group was lower ((15.3±6.4) g/L vs. (20.1±7.5) g/L, t=-3.117, P<0.01), opioid dosage was lower ((160.5±29.3) mg vs. (186.1±46.8) mg, t=-2.969, P<0.01), and the length of hospital stay was shorter ((7.0±2.0)d vs. (10.0±2.5)d, t=-6.000, P<0.01). Forgotten joint score of UKA group was higher ( (65.1±7.6) vs. (58.3±13.9) , t=2.732, P<0.01), the incidence of knee clunk or crepitus was lower (P=0.03) . There was no significant difference in the time of surgical tourniquet, range of motion, American knee society clinical score and incidence of deep vein thrombosis in lower extremities between the two groups.No complications such as surgical site infection, prosthesis loosening and dislocation occurred in the two groups. Conclusion: The early effect of UKA is similar to that of TKA, and it is better than TKA in the aspects of knee clunk or crepitus, forgotten joint score, blood loss, opioid dosage and postoperative hospital stay.
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Affiliation(s)
- Z Pei
- Department of Joint Surgery, Peking University People's Hospital, Beijing 100044, China (Pei Zheng is working at the Department of Orthopaedics, Peking University Shougang Hospital, Beijing 100144, China)
| | - Z T Ding
- Department of Joint Surgery, Peking University People's Hospital, Beijing 100044, China
| | - Z Li
- Department of Orthopaedics, Peking University Shougang Hospital, Beijing 100144, China
| | - Z P Guan
- Department of Joint Surgery, Peking University People's Hospital, Beijing 100044, China (Guan Zhenpeng is working at the Department of Orthopaedics, Peking University Shougang Hospital, Beijing 100144, China)
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Qu N, He Y, Wang C, Xu P, Yang Y, Cai X, Liu H, Yu K, Pei Z, Hyseni I, Sun Z, Fukuda M, Li Y, Tian Q, Xu Y. A POMC-originated circuit regulates stress-induced hypophagia, depression, and anhedonia. Mol Psychiatry 2020; 25:1006-1021. [PMID: 31485012 PMCID: PMC7056580 DOI: 10.1038/s41380-019-0506-1] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 06/01/2019] [Accepted: 07/17/2019] [Indexed: 01/27/2023]
Abstract
Chronic stress causes dysregulations of mood and energy homeostasis, but the neurocircuitry underlying these alterations remain to be fully elucidated. Here we demonstrate that chronic restraint stress in mice results in hyperactivity of pro-opiomelanocortin neurons in the arcuate nucleus of the hypothalamus (POMCARH neurons) associated with decreased neural activities of dopamine neurons in the ventral tegmental area (DAVTA neurons). We further revealed that POMCARH neurons project to the VTA and provide an inhibitory tone to DAVTA neurons via both direct and indirect neurotransmissions. Finally, we show that photoinhibition of the POMCARH→VTA circuit in mice increases body weight and food intake, and reduces depression-like behaviors and anhedonia in mice exposed to chronic restraint stress. Thus, our results identified a novel neurocircuitry regulating feeding and mood in response to stress.
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Affiliation(s)
- Na Qu
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
- Affiliated Wuhan Mental Health Center, Tongji Medical College, Huazhong University of Science and Technology, 430012, Wuhan, China
| | - Yanlin He
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Chunmei Wang
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Pingwen Xu
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Yongjie Yang
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Xing Cai
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Hesong Liu
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Kaifan Yu
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Zhou Pei
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Ilirjana Hyseni
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Zheng Sun
- Department of Medicine, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Makoto Fukuda
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Yi Li
- Affiliated Wuhan Mental Health Center, Tongji Medical College, Huazhong University of Science and Technology, 430012, Wuhan, China
- Research Center for Psychological and Health Sciences, China University of Geosciences, 430074, Wuhan, China
| | - Qing Tian
- Department of Pathology and Pathophysiology, School of Basic Medicine, Institute for Brain Research, Huazhong University of Science and Technology, 430030, Wuhan, China
| | - Yong Xu
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
- Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
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Chen W, Xie Y, Zheng M, Lin J, Huang P, Pei Z, Yao X. Clinical and genetic features of patients with amyotrophic lateral sclerosis in southern China. Eur J Neurol 2020; 27:1017-1022. [DOI: 10.1111/ene.14213] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Accepted: 03/09/2020] [Indexed: 12/11/2022]
Affiliation(s)
- W. Chen
- Department of Neurology The First Affiliated Hospital Sun Yat‐Sen University Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases National Key Clinical Department and Key Discipline of Neurology No.58 Zhongshan Road 2, Guangzhou 510080 China
| | - Y. Xie
- Department of Neurology The First Affiliated Hospital Sun Yat‐Sen University Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases National Key Clinical Department and Key Discipline of Neurology No.58 Zhongshan Road 2, Guangzhou 510080 China
| | - M. Zheng
- Department of Neurology The First Affiliated Hospital Sun Yat‐Sen University Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases National Key Clinical Department and Key Discipline of Neurology No.58 Zhongshan Road 2, Guangzhou 510080 China
| | - J. Lin
- Department of Neurology The First Affiliated Hospital Sun Yat‐Sen University Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases National Key Clinical Department and Key Discipline of Neurology No.58 Zhongshan Road 2, Guangzhou 510080 China
| | - P. Huang
- Department of Neurology The First Affiliated Hospital Sun Yat‐Sen University Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases National Key Clinical Department and Key Discipline of Neurology No.58 Zhongshan Road 2, Guangzhou 510080 China
| | - Z. Pei
- Department of Neurology The First Affiliated Hospital Sun Yat‐Sen University Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases National Key Clinical Department and Key Discipline of Neurology No.58 Zhongshan Road 2, Guangzhou 510080 China
| | - X. Yao
- Department of Neurology The First Affiliated Hospital Sun Yat‐Sen University Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases National Key Clinical Department and Key Discipline of Neurology No.58 Zhongshan Road 2, Guangzhou 510080 China
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Kun J, Rongrong J, Xiangbin W, Yan Z, Yiping D, Gang L, Pei Z, Shoujun L. Genetic characterization of bovine ephemeral fever virus in southern China, 2013-2017. Virus Genes 2020; 56:390-395. [PMID: 32030575 DOI: 10.1007/s11262-020-01740-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 01/29/2020] [Indexed: 10/25/2022]
Abstract
Bovine ephemeral fever virus (BEFV) can cause bovine ephemeral fever and is an economically important arbovirus of cattle. To expand the knowledge of the molecular epidemiology of BEFV in southern China, the complete surface glycoprotein G gene of BEFV was sequenced from samples collected in five restricted outbreaks from 2013 to 2017, namely 2013ZH, 2014HM, 2015GX, 11082-2016, and qy2017. It was noted that both 2014HM and 11082-2016 were detected in cattle regularly vaccinated with inactivated vaccine. Phylogenetic analysis demonstrated that all five strains grouped into cluster I. However, qy2017 was closer to the BEFV strains identified in Thailand, Japan, and Taiwan after 2000, while 2013ZH, 2014HM, 2015GX, and 11082-2016 were closer to the Chinese strains in 2011 and the Turkey strains in 2012. The analysis of antigenic sites indicated that several amino acid changes occurred between the five strains and the vaccine strain. Importantly, one novel amino acid mutation site was observed in the putative N-linked glycosylation sites of 2013ZH, 2014HM, 2015GX, and 11082-2016. Our study indicated novel genetic characteristics of the newly emerging BEFV strains in southern China and the necessity of updating the component of commercially available inactivated BEFV vaccines in China.
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Affiliation(s)
- Jia Kun
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China.,Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, Guangzhou, 510642, People's Republic of China.,Guangdong Technological Engineering Research Center for Pet, Guangzhou, 510642, People's Republic of China
| | - Jia Rongrong
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China.,Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, Guangzhou, 510642, People's Republic of China.,Guangdong Technological Engineering Research Center for Pet, Guangzhou, 510642, People's Republic of China
| | - Wang Xiangbin
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China.,Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, Guangzhou, 510642, People's Republic of China.,Guangdong Technological Engineering Research Center for Pet, Guangzhou, 510642, People's Republic of China
| | - Zhao Yan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China.,Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, Guangzhou, 510642, People's Republic of China.,Guangdong Technological Engineering Research Center for Pet, Guangzhou, 510642, People's Republic of China
| | - Dou Yiping
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China.,Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, Guangzhou, 510642, People's Republic of China.,Guangdong Technological Engineering Research Center for Pet, Guangzhou, 510642, People's Republic of China
| | - Lu Gang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China.,Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, Guangzhou, 510642, People's Republic of China.,Guangdong Technological Engineering Research Center for Pet, Guangzhou, 510642, People's Republic of China
| | - Zhou Pei
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China.,Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, Guangzhou, 510642, People's Republic of China.,Guangdong Technological Engineering Research Center for Pet, Guangzhou, 510642, People's Republic of China
| | - Li Shoujun
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China. .,Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, Guangzhou, 510642, People's Republic of China. .,Guangdong Technological Engineering Research Center for Pet, Guangzhou, 510642, People's Republic of China.
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Wang HY, Pei Z, Lee KC, Lopez-Brignoni E, Nikolov B, Crowley CA, Marsman MR, Barbier R, Friedmann N, Burns LH. PTI-125 Reduces Biomarkers of Alzheimer's Disease in Patients. J Prev Alzheimers Dis 2020; 7:256-264. [PMID: 32920628 DOI: 10.14283/jpad.2020.6] [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] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND The most common dementia worldwide, Alzheimer's disease is often diagnosed via biomarkers in cerebrospinal fluid, including reduced levels of Aβ1-42, and increases in total tau and phosphorylated tau-181. Here we describe results of a Phase 2a study of a promising new drug candidate that significantly reversed all measured biomarkers of Alzheimer's disease, neurodegeneration and neuroinflammation. PTI-125 is an oral small molecule drug candidate that binds and reverses an altered conformation of the scaffolding protein filamin A found in Alzheimer's disease brain. Altered filamin A links to the α7-nicotinic acetylcholine receptor to allow Aβ42's toxic signaling through this receptor to hyperphosphorylate tau. Altered filamin A also links to toll-like receptor 4 to enable Aβ-induced persistent activation of this receptor and inflammatory cytokine release. Restoring the native shape of filamin A prevents or reverses filamin A's linkages to the α7-nicotinic acetylcholine receptor and toll-like receptor 4, thereby blocking Aβ42's activation of these receptors. The result is reduced tau hyperphosphorylation and neuroinflammation, with multiple functional improvements demonstrated in transgenic mice and postmortem Alzheimer's disease brain. OBJECTIVES Safety, pharmacokinetics, and cerebrospinal fluid and plasma biomarkers were assessed following treatment with PTI-125 for 28 days. Target engagement and mechanism of action were assessed in patient lymphocytes by measuring 1) the reversal of filamin A's altered conformation, 2) linkages of filamin A with α7-nicotinic acetylcholine receptor or toll-like receptor 4, and 3) levels of Aβ42 bound to α7-nicotinic acetylcholine receptor or CD14, the co-receptor for toll-like receptor 4. DESIGN This was a first-in-patient, open-label Phase 2a safety, pharmacokinetics and biomarker study. SETTING Five clinical trial sites in the U.S. under an Investigational New Drug application. PARTICIPANTS This study included 13 mild-to-moderate Alzheimer's disease patients, age 50-85, Mini Mental State Exam ≥16 and ≤24 with a cerebrospinal fluid total tau/Aβ42 ratio ≥0.30. INTERVENTION PTI-125 oral tablets (100 mg) were administered twice daily for 28 consecutive days. MEASUREMENTS Safety was assessed by electrocardiograms, clinical laboratory analyses and adverse event monitoring. Plasma levels of PTI-125 were measured in blood samples taken over 12 h after the first and last doses; cerebrospinal fluid levels were measured after the last dose. Commercial enzyme linked immunosorbent assays assessed levels of biomarkers of Alzheimer's disease in cerebrospinal fluid and plasma before and after treatment with PTI-125. The study measured biomarkers of pathology (pT181 tau, total tau and Aβ42), neurodegeneration (neurofilament light chain and neurogranin) and neuroinflammation (YKL-40, interleukin-6, interleukin-1β and tumor necrosis factor α). Plasma levels of phosphorylated and nitrated tau were assessed by immunoprecipitation of tau followed by immunoblotting of three different phospho-epitopes elevated in AD (pT181-tau, pS202-tau and pT231-tau) and nY29-tau. Changes in conformation of filamin A in lymphocytes were measured by isoelectric focusing point. Filamin A linkages to α7-nicotinic acetylcholine receptor and toll-like receptor 4 were assessed by immunoblot detection of α7-nicotinic acetylcholine receptor and toll-like receptor 4 in anti-filamin A immunoprecipitates from lymphocytes. Aβ42 complexed with α7-nicotinic acetylcholine receptor or CD14 in lymphocytes was also measured by co-immunoprecipitation. The trial did not measure cognition. RESULTS Consistent with the drug's mechanism of action and preclinical data, PTI-125 reduced cerebrospinal fluid biomarkers of Alzheimer's disease pathology, neurodegeneration and neuroinflammation from baseline to Day 28. All patients showed a biomarker response to PTI-125. Total tau, neurogranin, and neurofilament light chain decreased by 20%, 32% and 22%, respectively. Phospho-tau (pT181) decreased 34%, evidence that PTI-125 suppresses tau hyperphosphorylation induced by Aβ42's signaling through α7-nicotinic acetylcholine receptor. Cerebrospinal fluid biomarkers of neuroinflammation (YKL-40 and inflammatory cytokines) decreased by 5-14%. Biomarker effects were similar in plasma. Aβ42 increased slightly - a desirable result because low Aβ42 indicates Alzheimer's disease. This increase is consistent with PTI-125's 1,000-fold reduction of Aβ42's femtomolar binding affinity to α7-nicotinic acetylcholine receptor. Biomarker reductions were at least p ≤ 0.001 by paired t test. Target engagement was shown in lymphocytes by a shift in filamin A's conformation from aberrant to native: 93% was aberrant on Day 1 vs. 40% on Day 28. As a result, filamin A linkages with α7-nicotinic acetylcholine receptor and toll-like receptor 4, and Aβ42 complexes with α7-nicotinic acetylcholine receptor and CD14, were all significantly reduced by PTI-125. PTI-125 was safe and well-tolerated in all patients. Plasma half-life was 4.5 h and approximately 30% drug accumulation was observed on Day 28 vs. Day 1. CONCLUSIONS PTI-125 significantly reduced biomarkers of Alzheimer's disease pathology, neurodegeneration, and neuroinflammation in both cerebrospinal fluid and plasma. All patients responded to treatment. The magnitude and consistency of reductions in established, objective biomarkers imply that PTI-125 treatment counteracted disease processes and reduced the rate of neurodegeneration. Based on encouraging biomarker data and safety profile, approximately 60 patients with mild-to-moderate AD are currently being enrolled in a Phase 2b randomized, placebo-controlled confirmatory study to assess the safety, tolerability and efficacy of PTI-125.
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Affiliation(s)
- H-Y Wang
- Lindsay H. Burns, PhD, Cassava Sciences, Inc., 7801 N. Capital of Texas Hwy, Ste. 260, Austin, TX 78746, Phone: 512-501-2484,
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Zhang W, Wu X, Pei Z, Kiess W, Yang Y, Xu Y, Chang Z, Wu J, Sun C, Luo F. GDF5 Promotes White Adipose Tissue Thermogenesis via p38 MAPK Signaling Pathway. DNA Cell Biol 2019; 38:1303-1312. [PMID: 31553232 DOI: 10.1089/dna.2019.4724] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Growth differentiation factor 5 (GDF5) was reported to regulate brown adipogenesis; however, its effects on insulin sensitivity, full metabolic syndrome spectrum, and the thermogenesis in subcutaneous white adipose tissue (sWAT) have not been elucidated yet. We thus generated fatty acid-binding protein 4 (Fabp4)-GDF5 transgenic (TG) mice and showed that GDF5 TG mice developed a relative lean phenotype on a high-fat diet (HFD) and showed increased insulin sensitivity. Over expression of GDF5 in adipose tissues greatly promoted the thermogenic process in sWAT after cold or β3-agonist treatment. In TG mice, sWAT showed an important thermogenic effect as the thermogenic gene expression was markedly increased, which was consistent with the typical features of beige adipocytes. Moreover, knockdown of the protein GDF5 impaired browning program in sWAT after thermogenic stimuli. Enhanced mitogen-activated protein kinase (MAPK)/activating transcription factor 2 (ATF2) signaling was also identified in sWAT of HFD-fed GDF5 mice, and thermogenesis in mature adipocytes induced by GDF5 protein could be partly blocked by a p38 MAPK inhibitor. Taken together, our data suggest that GDF5 could improve insulin sensitivity and prevent metabolic syndrome, the adaptive thermogenesis in sWAT could mediate the obesity resistance effects of GDF5 in mice and partially resulted in the activation of the p38 MAPK signaling pathway.
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Affiliation(s)
- Wenting Zhang
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Xiaohui Wu
- State Key Laboratory of Genetic Engineering and National Center for International Research of Development and Disease, Institute of Developmental Biology and Molecular Medicine, Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Zhou Pei
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Wieland Kiess
- Department of Women and Child Health, Hospital for Children and Adolescent, University Hospitals, University of Leipzig, Leipzig, Germany
| | - Yan Yang
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Yong Xu
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, Texas.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
| | - Zhuo Chang
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Jing Wu
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Chengjun Sun
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Feihong Luo
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
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Huang J, Zeng T, Zhang X, Tian Y, Wu Y, Yu J, Pei Z, Liu Y, Hu T, Tan L. Clinical diagnostic significance of 14-3-3η protein, high-mobility group box-1, anti-cyclic citrullinated peptide antibodies, anti-mutated citrullinated vimentin antibodies and rheumatoid factor in rheumatoid arthritis. Br J Biomed Sci 2019; 77:19-23. [PMID: 31433746 DOI: 10.1080/09674845.2019.1658425] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Introduction: Circulating markers of rheumatoid arthritis (RA) include the 14-3-3η protein, high-mobility group box-1 (HMGB1), anti-cyclic citrullinated peptide (anti-CCP) antibodies, anti-mutated citrullinated vimentin (anti-MCV) antibodies and rheumatoid factor (RF). We set out to determine which two markers in combination provided best discriminatory power for this disease.Methods: We recruited 108 RA patients, 102 non-RA patients (SLE, AS, Sjogren's syndrome, MCTD) and 90 healthy controls. Sensitivity, specificity, positive predictive value, negative predictive value, positive likelihood ratio, negative likelihood ratio and the Youden index of each analyte were calculated and binary logistic regression analysis and receiver operating characteristic (ROC) curve were performed to evaluate their diagnostic value for RA alone and in paired combination.Results: As expected, all markers were elevated in RA patients (P < 0.05). Binary logistic regression analysis showed that 14-3-3η had the highest odds ratio (95% CI) at 2.4 (1.9-2.8). Anti-CCP and anti-MCV had the highest areas under the curves [AUC (95% CI)] at 0.85 (0.78-0.90) and 0.85 (0.78-0.91) respectively (both P < 0.001). In serial detection (one marker followed by another), no combination had a Youden index >0.6. In parallel analysis (both considered together) several combinations had a Youden index >0.7, of which the highest (0.78) was anti-CCP with anti-MCV, with a sensitivity of 93.3% and specificity of 84.7%.Conclusions: Despite individual increases in serum 14-3-3η, HMGB1, anti-CCP, anti-MCV and RF, the combination of anti-CCP and anti-MCV might be of great help for diagnostic in RA, and so should be considered as routine tests for this disease.
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Affiliation(s)
- J Huang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, Jiangxi, China
| | - T Zeng
- The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - X Zhang
- The Third Hospital of Nanchang City Jiangxi Province, Nanchang, Jiangxi, China
| | - Y Tian
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, Jiangxi, China
| | - Y Wu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, Jiangxi, China
| | - J Yu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, Jiangxi, China
| | - Z Pei
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, Jiangxi, China
| | - Y Liu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, Jiangxi, China
| | - T Hu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, Jiangxi, China
| | - L Tan
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, Jiangxi, China
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Pei Z, Ying X, Tang Y, Liu L, Zhang H, Liu S, Zhang D, Wang K, Zhang D, Kong L, Gao Y, Ma H. Biological characteristics of a new antibacterial peptide and its antibacterial mechanisms against Gram-negative bacteria. Pol J Vet Sci 2018; 21:533-542. [PMID: 30468326 DOI: 10.24425/124287] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
MDAP-2 is a new antibacterial peptide with a unique structure that was isolated from house- flies. However, its biological characteristics and antibacterial mechanisms against bacteria are still poorly understood. To study the biological characteristics, antibacterial activity, hemolytic activi- ty, cytotoxicity to mammalian cells, and the secondary structure of MDAP-2 were detected; the results showed that MDAP-2 displayed high antibacterial activity against all of the tested Gram-negative bacteria. MDAP-2 had lower hemolytic activity to rabbit red blood cells; only 3.4% hemolytic activity was observed at a concentration of 800μg/ml. MDAP-2 also had lower cytotoxicity to mammalian cells; IC50 values for HEK-293 cells, VERO cells, and IPEC-J2 cells were greater than 1000 μg/ml. The circular dichroism (CD) spectra showed that the peptide most- ly has α-helical properties and some β-fold structure in water and in membrane-like conditions. MDAP-2 is therefore a promising antibacterial agent against Gram-negative bacteria. To deter- mine the antibacterial mechanism(s) of action, fluorescent probes, flow cytometry, and transmis- sion electron microscopy (TEM) were used to study the effects of MDAP-2 on membrane perme- ability, polarization ability, and integrity of Gram-negative bacteria. The results indicated that the peptide caused membrane depolarization, increased membrane permeability, and destroyed membrane integrity. In conclusion, MDAP-2 is a broad-spectrum, lower hemolytic activity, and lower cytotoxicity antibacterial peptide, which is mainly effective on Gram-negative bacteria. It exerts its antimicrobial effects by causing bacterial cytoplasm membrane depolarization, increas- ing cell membrane permeability and disturbing the membrane integrity of Gram-negative bacte- ria. MDAP-2 may offer a new strategy to for defense against Gram-negative bacteria.
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Affiliation(s)
- Z Pei
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street 2888, Changchun 130118, PR China
| | - X Ying
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street 2888, Changchun 130118, PR China
| | - Y Tang
- Institute of Animal Husbandry and Veterinary Medicine, Academy of Agricultural Science of Guizhou Province, Laolipo 1, Guiyang 550005, PR China
| | - L Liu
- Jilin Medical University, Jilin Street 5, Jilin 132013, PR China
| | - H Zhang
- Animal Husbandry Bureau of Yongji County, Tianjin Street, Jilin,132100, Jilin Province, PR China
| | - S Liu
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street 2888, Changchun 130118, PR China
| | - D Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street 2888, Changchun 130118, PR China
| | - K Wang
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street 2888, Changchun 130118, PR China
| | - D Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street 2888, Changchun 130118, PR China
| | - L Kong
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street 2888, Changchun 130118, PR China
| | - Y Gao
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street 2888, Changchun 130118, PR China
| | - H Ma
- College of Animal Science and Technology, Jilin Agricultural University, Xincheng Street 2888, Changchun 130118, PR China
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Tian Y, Zeng T, Tan L, Wu Y, Yu J, Huang J, Pei Z. BPI-ANCA in chronic obstructive pulmonary disease with pulmonary Pseudomonas aeruginosa colonisation: a novel indicator of poor prognosis. Br J Biomed Sci 2018; 75:206-208. [PMID: 30105943 DOI: 10.1080/09674845.2018.1512260] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Y Tian
- a Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine , the Second Affiliated Hospital of Nanchang University , Nanchang , China
| | - T Zeng
- a Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine , the Second Affiliated Hospital of Nanchang University , Nanchang , China
| | - L Tan
- a Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine , the Second Affiliated Hospital of Nanchang University , Nanchang , China
| | - Y Wu
- a Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine , the Second Affiliated Hospital of Nanchang University , Nanchang , China
| | - J Yu
- a Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine , the Second Affiliated Hospital of Nanchang University , Nanchang , China
| | - J Huang
- a Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine , the Second Affiliated Hospital of Nanchang University , Nanchang , China
| | - Z Pei
- a Department of Clinical Laboratory, Jiangxi Province Key Laboratory of Laboratory Medicine , the Second Affiliated Hospital of Nanchang University , Nanchang , China
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Sun C, Pei Z, Zhang M, Sun B, Yang L, Zhao Z, Cheng R, Luo F. Recovered insulin production after thiamine administration in permanent neonatal diabetes mellitus with a novel solute carrier family 19 member 2 (SLC19A2) mutation. J Diabetes 2018; 10:50-58. [PMID: 28371426 DOI: 10.1111/1753-0407.12556] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 11/09/2016] [Revised: 03/08/2017] [Accepted: 03/23/2017] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Solute carrier family 19 member 2 (SLC19A2) gene deficiency is one of the causes of permanent neonatal diabetes mellitus (PNDM) and can be effectively managed by thiamine supplementation. Herein we report on a male patient with a novel SLC19A2 mutation and summarize the clinical characteristics of patients with SLC19A2 deficiency. METHODS The genetic diagnosis of the patient with PNDM was made by sequencing and quantitative polymerase chain reaction. The clinical characteristics of PNDM were summarized on the basis of a systematic review of the literature. RESULTS The patient with PNDM had c.848G>A (p.W283X) homozygous mutation in SLC19A2. His father had a wild-type SLC19A2 (c.848G) and his mother was c.848G/A heterozygous. The patient and his father both had a diploid genotype (c.848A/A and c.848G/G). After oral thiamine administration, the patient's fasting C-peptide levels increased gradually, and there was a marked decrease in insulin requirements. A search of the literature revealed that thiamine treatment was effective and improved diabetes in 63% of patients with SLC19A2 deficiency. CONCLUSIONS A novel SLC19A2 mutation (c.848G>A; p.W283X) was identified, which was most likely inherited as segmental uniparental isodisomy. Insulin insufficiency in PNDM caused by SLC19A2 deficiency can be corrected by thiamine supplementation. The differential diagnosis of SLC19A2 deficiency should be considered in children with PNDM accompanied by anemia or hearing defects to allow for early treatment.
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Affiliation(s)
- Chengjun Sun
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Zhou Pei
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Miaoying Zhang
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Bijun Sun
- The Molecular Genetic Diagnosis Center, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Lin Yang
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
- The Molecular Genetic Diagnosis Center, Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
| | - Zhuhui Zhao
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Ruoqian Cheng
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Feihong Luo
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
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Xu D, Lu L, Xi L, Cheng R, Pei Z, Bi Y, Ruan S, Luo F. Efficacy and safety of percutaneous administration of dihydrotestosterone in children of different genetic backgrounds with micropenis. J Pediatr Endocrinol Metab 2017; 30:1285-1291. [PMID: 29176021 DOI: 10.1515/jpem-2016-0400] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 10/09/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND Exogenous androgen supplement is an optional treatment for micropenis; however, its use in childhood is controversial due to potential side effects. METHODS Twenty-three children (mean age: 4.07±3.4 years) with micropenis of unknown causes harboring the 46,XY karyotype were recruited in an open prospective study. Androgen receptor (AR), steroid 5α-reductase-2 (SRD5A2), and SRY genes were sequenced; 2.5% dihydrotestosterone (DHT) transdermal gel (0.1-0.3 mg/kg/day) was applied and titrated within the normal DHT serum reference ranges. Stretched penile length (SPL) was measured before therapy, and after 1, 3 and 6 months of DHT gel treatment, respectively. RESULTS Two patients were found with AR gene mutations and five patients with SRD5A2 gene mutations. Average stretched penile lengths (SPLs) were 1.68±0.6 cm at baseline and 2.2±0.66 cm, 2.6±0.59 cm and 2.9±0.55 cm (mean ± 1 SD) after 1, 3 and 6 months of treatment, respectively. Fourteen cases (61%) reached standard penile length ranges (>-2.5 SD) and medication was discontinued; six cases (26%) were satisfied with the improved penile lengths despite failing to reach the aged matched standards. Three infants (13%) discontinued the medication after 3 months due to anxiety about the potential side effects. No significant side effects were found except the elevated DHT serum levels after therapy. CONCLUSIONS Short term and local application of DHT at low doses in patients with micropenis could accelerate penile growth effectively without evident side effects; however, precautions still need be taken due to the paucity of long term study and the lack of ideal DHT dosage.
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Sandlöbes S, Friák M, Korte-Kerzel S, Pei Z, Neugebauer J, Raabe D. A rare-earth free magnesium alloy with improved intrinsic ductility. Sci Rep 2017; 7:10458. [PMID: 28874798 PMCID: PMC5585333 DOI: 10.1038/s41598-017-10384-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 08/09/2017] [Indexed: 11/09/2022] Open
Abstract
Metals are the backbone of manufacturing owing to their strength and formability. Compared to polymers they have high mass density. There is, however, one exception: magnesium. It has a density of only 1.7 g/cm3, making it the lightest structural material, 4.5 times lighter than steels, 1.7 times lighter than aluminum, and even slightly lighter than carbon fibers. Yet, the widespread use of magnesium is hampered by its intrinsic brittleness. While other metallic alloys have multiple dislocation slip systems, enabling their well-known ductility, the hexagonal lattice of magnesium offers insufficient modes of deformation, rendering it intrinsically brittle. We have developed a quantum-mechanically derived treasure map which screens solid solution combinations with electronic bonding, structure and volume descriptors for similarity to the ductile magnesium-rare earth alloys. Using this insight we synthesized a surprisingly simple, compositionally lean, low-cost and industry-compatible new alloy which is over 4 times more ductile and 40% stronger than pure magnesium. The alloy contains 1 wt.% aluminum and 0.1 wt.% calcium, two inexpensive elements which are compatible with downstream recycling constraints.
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Affiliation(s)
- S Sandlöbes
- Institut für Metallkunde und Metallphysik, Kopernikusstr. 14, RWTH Aachen University, 52074, Aachen, Germany. .,Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straβe 1, 40237, Düsseldorf, Germany.
| | - M Friák
- Institute of Physics of Materials, Academy of Sciences of the Czech Republic, v.v.i., Žižkova 22, Brno, 616 62, Czech Republic.,Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straβe 1, 40237, Düsseldorf, Germany
| | - S Korte-Kerzel
- Institut für Metallkunde und Metallphysik, Kopernikusstr. 14, RWTH Aachen University, 52074, Aachen, Germany.
| | - Z Pei
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straβe 1, 40237, Düsseldorf, Germany
| | - J Neugebauer
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straβe 1, 40237, Düsseldorf, Germany
| | - D Raabe
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straβe 1, 40237, Düsseldorf, Germany.
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Luo C, Yao X, Li J, He B, Liu Q, Ren H, Liang F, Li M, Lin H, Peng J, Yuan TF, Pei Z, Su H. Paravascular pathways contribute to vasculitis and neuroinflammation after subarachnoid hemorrhage independently of glymphatic control. Cell Death Dis 2016; 7:e2160. [PMID: 27031957 PMCID: PMC4823962 DOI: 10.1038/cddis.2016.63] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 02/15/2016] [Accepted: 02/26/2016] [Indexed: 02/06/2023]
Abstract
Subarachnoid hemorrhage (SAH) is a devastating disease with high mortality. The mechanisms underlying its pathological complications have not been fully identified. Here, we investigate the potential involvement of the glymphatic system in the neuropathology of SAH. We demonstrate that blood components rapidly enter the paravascular space following SAH and penetrate into the perivascular parenchyma throughout the brain, causing disastrous events such as cerebral vasospasm, delayed cerebral ischemia, microcirculation dysfunction and widespread perivascular neuroinflammation. Clearance of the paravascular pathway with tissue-type plasminogen activator ameliorates the behavioral deficits and alleviates histological injury of SAH. Interestingly, AQP4−/− mice showed no improvements in neurological deficits and neuroinflammation at day 7 after SAH compared with WT control mice. In conclusion, our study proves that the paravascular pathway dynamically mediates the pathological complications following acute SAH independently of glymphatic control.
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Affiliation(s)
- C Luo
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - X Yao
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital Sun Yat-Sen University, Guangzhou, China
| | - J Li
- Department of Neurosurgery, Tangdu Hospital, Fourth Military University, Xi'an, China
| | - B He
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital Sun Yat-Sen University, Guangzhou, China
| | - Q Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - H Ren
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - F Liang
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital Sun Yat-Sen University, Guangzhou, China
| | - M Li
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital Sun Yat-Sen University, Guangzhou, China
| | - H Lin
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - J Peng
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - T F Yuan
- School of Psychology, Nanjing Normal University, Nanjing, China
| | - Z Pei
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital Sun Yat-Sen University, Guangzhou, China
| | - H Su
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
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Suzuki M, Kondo S, Pei Z, Maekawa A, Saito I, Kanegae Y. Preferable sites and orientations of transgene inserted in the adenovirus vector genome: The E3 site may be unfavorable for transgene position. Gene Ther 2015; 22:421-9. [PMID: 25588742 PMCID: PMC4424821 DOI: 10.1038/gt.2014.124] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [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: 08/15/2014] [Revised: 11/05/2014] [Accepted: 11/20/2014] [Indexed: 12/15/2022]
Abstract
The adenovirus vector (AdV) can carry two transgenes in its genome, the therapeutic gene and a reporter gene, for example. The E3 insertion site has often been used for the expression of the second transgene. A transgene can be inserted at six different sites/orientations: E1, E3 and E4 sites, and right and left orientations. However, the best combination of the insertion sites and orientations as for the titers and the expression levels has not sufficiently been studied. We attempted to construct 18 AdVs producing GFP or LacZ gene driven by the EF1α promoter and Cre gene driven by the α-fetoprotein promoter. The AdV containing GFP gene at E3 in the rightward orientation (GFP-E3R) was not available. The LacZ-E3R AdV showed 20-fold lower titer and 50-fold lower level of fiber mRNA than the control E1L AdV. Notably, we found four aberrantly spliced mRNAs in the LacZ-E3L/R AdVs, probably explaining their very low titers. Although the transgene expression levels in the E4R AdVs were about threefold lower than those in the E1L AdVs, their titers are comparable with that of E1L AdVs. We concluded that E1L and E4R sites/orientations are preferable for expressing the main target gene and a second gene, respectively.
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Affiliation(s)
- M Suzuki
- Laboratory of Molecular Genetics, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - S Kondo
- Laboratory of Molecular Genetics, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - Z Pei
- Laboratory of Molecular Genetics, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - A Maekawa
- Laboratory of Molecular Genetics, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - I Saito
- Laboratory of Molecular Genetics, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - Y Kanegae
- Laboratory of Molecular Genetics, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
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Pei Z, Mao Y, Wang S, Tang X. Continuous infusion of remifentanil combined with target-controlled infusion of propofol for tracheal intubation in dogs. Vet Rec 2014; 175:119. [DOI: 10.1136/vr.101995] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Z. Pei
- Department of Veterinary Medicine (Small Animal Section); College of Animal Sciences; Zhejiang University; 866 Yuhangtang Road Hangzhou 310058 PR China
| | - Y. Mao
- Department of Veterinary Medicine (Small Animal Section); Veterinary Teaching Hospital; Zhejiang University; 866 Yuhangtang Road Hangzhou 310058 PR China
| | - S. Wang
- Department of Veterinary Medicine (Small Animal Section); College of Animal Sciences; Zhejiang University; 866 Yuhangtang Road Hangzhou 310058 PR China
| | - X. Tang
- Department of Veterinary Medicine (Small Animal Section); Veterinary Teaching Hospital; Zhejiang University; 866 Yuhangtang Road Hangzhou 310058 PR China
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Pei Z, Yang Y, Kiess W, Sun C, Luo F. Dynamic profile and adipogenic role of growth differentiation factor 5 (GDF5) in the differentiation of 3T3-L1 preadipocytes. Arch Biochem Biophys 2014; 560:27-35. [PMID: 25078108 DOI: 10.1016/j.abb.2014.07.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Revised: 06/29/2014] [Accepted: 07/21/2014] [Indexed: 12/16/2022]
Abstract
Adipocyte differentiation is key to determining the number of adipocytes during the development of obesity. Recent studies have shown that growth differentiation factor-5 (GDF5) promotes brown adipogenesis, however its role in white adipogenesis is still uncertain. The aim of the present study was to investigate the effect of GDF5 on white adipogenesis using 3T3-L1 preadipocyte model. In the present study, GDF5 was found to be differentially regulated during adipocyte differentiation. GDF5 protein increased the differentiation of 3T3-L1 preadipocytes, especially when these cells were exposed to hormone cocktails without insulin. During adipogenesis, GDF5 enhanced the expression of genes related to adipocyte differentiation and caused cells to enter the S phase. Short-hairpin-RNA knockdown of GDF5 in 3T3-L1 cells was found to prevent adipogenesis induced by a standard hormone cocktail and to downregulate the expression of adipocyte genes and proteins, this impairment could be partly rescued by GDF5 protein. Collectively, these results suggest that GDF5 can promote progression of the cell-cycle and increase numbers of cells in S phase, GDF5 might play a critical role in 3T3-L1 preadipocyte differentiation.
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Affiliation(s)
- Zhou Pei
- Department of Pediatric Endocrinology and Inherited Metabolic Disease, Children's Hospital of Fudan University, Shanghai, China
| | - Yi Yang
- Institute of Pediatrics, Children's Hospital of Fudan University, Shanghai, China
| | - Wieland Kiess
- Department of Women and Child Health, Hospital for Children and Adolescents, Center for Pediatric Research, University of Leipzig, Leipzig, Germany
| | - Chengjun Sun
- Department of Pediatric Endocrinology and Inherited Metabolic Disease, Children's Hospital of Fudan University, Shanghai, China; Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Feihong Luo
- Department of Pediatric Endocrinology and Inherited Metabolic Disease, Children's Hospital of Fudan University, Shanghai, China.
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Lin XP, Feng L, Xie CG, Chen DB, Pei Z, Liang XL, Xie QY, Li XH, Pan SY. Valproic acid attenuates the suppression of acetyl histone H3 and CREB activity in an inducible cell model of Machado-Joseph disease. Int J Dev Neurosci 2014; 38:17-22. [PMID: 25068645 DOI: 10.1016/j.ijdevneu.2014.07.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Revised: 07/15/2014] [Accepted: 07/16/2014] [Indexed: 11/26/2022] Open
Abstract
Machado-Joseph disease (MJD) is caused by a (CAG)n trinucleotide repeat expansion that is translated into an abnormally long polyglutamine tract. This disease is considered the most common form of spinocerebellar ataxia (SCA). In the present study, we developed stable inducible cell lines (PC12Tet-On-Ataxin-3-Q28/84) expressing ataxin-3 with either normal or abnormal CAG repeats under doxycycline control. The expression of acetyl histone H3 and the induction of c-Fos in response to cAMP were strongly suppressed in cells expressing the protein with the expanded polyglutamine tract. Treatment with valproic acid, a histone deacetylase inhibitor (HDACi), attenuated mutant ataxin-3-induced cell toxicity and suppression of acetyl histone H3, phosphorylated cAMP-responsive element binding protein (p-CREB) as well as c-Fos expression. These results indicate that VPA can stimulate the up-regulation of gene transcription through hyperacetylation. Thus, VPA might have a therapeutic effect on MJD.
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Affiliation(s)
- X P Lin
- Department of Huiqiao Building, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
| | - L Feng
- Department of Neurological Intensive Care Unit, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - C G Xie
- Department of Neurology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - D B Chen
- Department of Neurology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Z Pei
- Department of Neurology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - X L Liang
- Department of Neurology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Q Y Xie
- Department of Hyperbaric Oxygen Therapy, Guangzhou General Hospital of Guangzhou Military Area Command of Chinese PLA, Guangzhou, Guangdong Province, China
| | - X H Li
- Department of Neurology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China.
| | - S Y Pan
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
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Pei Z, Flexeder C, Fuertes E, Standl M, Berdel D, von Berg A, Koletzko S, Schaaf B, Heinrich J. Mother's body mass index and food intake in school-aged children: results of the GINIplus and the LISAplus studies. Eur J Clin Nutr 2014; 68:898-906. [PMID: 24848629 PMCID: PMC4283383 DOI: 10.1038/ejcn.2014.92] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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: 01/20/2014] [Revised: 03/21/2014] [Accepted: 03/27/2014] [Indexed: 12/16/2022]
Abstract
BACKGROUND/OBJECTIVES Mother's body mass index (BMI) is a strong predictor of child BMI. Whether mother's BMI correlates with child's food intake is unclear. We investigated associations between mother's BMI/overweight and child's food intake using data from two German birth cohorts. SUBJECTS/METHODS Food intakes from 3230 participants were derived from parent-completed food frequency questionnaires. Intakes of 11 food groups were categorized into three levels using group- and sex-specific tertile cutoffs. Mother's BMI and overweight were calculated on the basis of questionnaire data. Multinomial regression models assessed associations between a child's food intake and mother's BMI/overweight. Linear regression models assessed associations between a child's total energy intake and mother's BMI. Models were adjusted for study region, maternal education, child's age, sex, pubertal status and energy intake and the BMIs of the child and father. RESULTS Mothers' BMI was associated with high meat intake in children (adjusted relative risk ratio (RRR (95% confidence interval))=1.06 (1.03; 1.09)). Mothers' overweight was associated with the meat intake (medium versus low RRR=1.30 (1.07; 1.59); high versus low RRR=1.50 (1.19; 1.89)) and egg intake (medium versus low RRR=1.24 (1.02; 1.50); high versus low RRR=1.30 (1.07; 1.60)) of children. There were no consistent associations for rest of the food groups. For every one-unit increase in mothers' BMI, the total energy intake in children increased by 9.2 kcal (3.7; 14.7). However, this effect was not significant after adjusting for children's BMI. CONCLUSIONS Our results suggest that mother's BMI and mother's overweight are important correlates of a child's intake of energy, meat and eggs.
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Affiliation(s)
- Z Pei
- 1] Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany [2] Faculty of Medicine, Ludwig Maximilians University of Munich, Munich, Germany
| | - C Flexeder
- Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - E Fuertes
- 1] Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany [2] School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada
| | - M Standl
- Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - D Berdel
- Department of Pediatrics, Marien-Hospital Wesel, Wesel, Germany
| | - A von Berg
- Department of Pediatrics, Marien-Hospital Wesel, Wesel, Germany
| | - S Koletzko
- Division of Pediatric, Gastroenterology, and Hepatology, Dr von Hauner Children's Hospital, University of Munich, Munich, Germany
| | - B Schaaf
- Medical Practice for Pediatrics, Bad Honnef, Germany
| | - J Heinrich
- Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
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Pei Z, Lang B, Fragoso YD, Shearer KD, Zhao L, Mccaffery PJA, Shen S, Ding YQ, McCaig CD, Collinson JM. The expression and roles of Nde1 and Ndel1 in the adult mammalian central nervous system. Neuroscience 2014; 271:119-36. [PMID: 24785679 PMCID: PMC4048543 DOI: 10.1016/j.neuroscience.2014.04.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [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: 01/10/2014] [Revised: 04/08/2014] [Accepted: 04/18/2014] [Indexed: 11/01/2022]
Abstract
Mental and neurological illnesses affect one in four people. While genetic linkage analyses have shown an association of nuclear distribution factor E (NDE1, or NudE) and its ohnolog NDE-like 1 (NDEL1, or Nudel) with mental disorders, the cellular mechanisms remain unclear. In the present study, we have demonstrated that Nde1 and Ndel1 are differentially localised in the subventricular zone (SVZ) of the forebrain and the subgranular zone (SGZ) of the hippocampus, two regions where neurogenesis actively occurs in the adult brain. Nde1, but not Ndel1, is localized to putative SVZ stem cells, and to actively dividing progenitors of the SGZ. The influence of these proteins on neural stem cell differentiation was investigated by overexpression in a hippocampal neural stem cell line, HCN-A94. Increasing Nde1 expression in this neural stem cell line led to increased neuronal differentiation while decreasing levels of astroglial differentiation. In primary cultured neurons and astrocytes, Nde1 and Ndel1 were found to have different but comparable subcellular localizations. In addition, we have shown for the first time that Nde1 is heterogeneously distributed in cortical astrocytes of human brains. Our data indicate that Nde1 and Ndel1 have distinct but overlapping distribution patterns in mouse brain and cultured nerve cells. They may function differently and therefore their dosage changes may contribute to some aspects of mental disorders.
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Affiliation(s)
- Z Pei
- School of Medical Sciences, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, United Kingdom
| | - B Lang
- School of Medical Sciences, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, United Kingdom.
| | - Y D Fragoso
- School of Medical Sciences, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, United Kingdom; Department of Neurology, Medical Faculty, Universidade Metropolitana de Santos, Sao Paulo, Brazil
| | - K D Shearer
- School of Medical Sciences, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, United Kingdom
| | - L Zhao
- School of Medical Sciences, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, United Kingdom
| | - P J A Mccaffery
- School of Medical Sciences, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, United Kingdom
| | - S Shen
- School of Medical Sciences, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, United Kingdom; Regenerative Medicine Institute, School of Medicine, NUI Galway, Galway, Ireland
| | - Y Q Ding
- Tongji University School of Medicine, 1239 Siping Road, Shanghai 200092, China
| | - C D McCaig
- School of Medical Sciences, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, United Kingdom
| | - J M Collinson
- School of Medical Sciences, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, United Kingdom.
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Pei Z, Chen X, Sun C, Du H, Wei H, Song W, Yang Y, Zhang M, Lu W, Cheng R, Luo F. A novel single nucleotide polymorphism in the protein tyrosine phosphatase N22 gene (PTPN22) is associated with Type 1 diabetes in a Chinese population. Diabet Med 2014; 31:219-26. [PMID: 24117662 DOI: 10.1111/dme.12331] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 08/09/2013] [Accepted: 09/19/2013] [Indexed: 11/29/2022]
Abstract
AIMS To examine single nucleotide polymorphisms in the protein tyrosine phosphatase N22 gene (PTPN22) and to study their association with Type 1 diabetes in a Chinese cohort. METHODS Three hundred and sixty-four young patients with Type 1 diabetes and 719 healthy children were included in this case-controlled study. The genotypes of rs1217385, rs2488457 (-1123C>G), rs1217414, rs1217419, rs3765598 and rs2476601 (1858C>T) in the PTPN22 gene were determined using the SNaPshot method. Alleles, genotypes and haplotype frequencies were compared between patients with Type 1 diabetes and healthy control subjects. The association between single nucleotide polymorphisms and clinical traits/autoantibody status was also analysed. RESULTS The single nucleotide polymorphism, rs1217419, located in the second intron of the PTPN22 gene was associated with Type 1 diabetes (odds ratio 1.5, 95% CI 1.14-1.97, P = 0.003). An additional single nucleotide polymorphism, rs1217385, was also associated with Type 1 diabetes; however, the association was secondary to that of rs1217419. The previously reported single nucleotide polymorphism that is associated with Type 1 diabetes (-1123G>C) had only marginal association with Type 1 diabetes in our study. A marginal association was also identified between -1123G>C and glutamic acid decarboxylase autoantibody positivity in patients with Type 1 diabetes. There was no association between the single nucleotide polymorphism 1858C>T and Type 1 diabetes in our studied cohort. CONCLUSIONS Our study confirmed that PTPN22 is a gene that contributes to Type 1 diabetes susceptibility. The primary association occurs with single nucleotide polymorphism rs1217419 and there is clear heterogeneity of the association between PTPTN22 polymorphisms and Type 1 diabetes in a Chinese population compared with other populations.
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Affiliation(s)
- Z Pei
- Department of Pediatric Endocrinology and Inborn Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
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Jiang H, Sun YM, Hao Y, Yan YP, Chen K, Xin SH, Tang YP, Li XH, Jun T, Chen YY, Liu ZJ, Wang CR, Li H, Pei Z, Shang HF, Zhang BR, Gu WH, Wu ZY, Tang BS, Burgunder JM. Huntingtin gene CAG repeat numbers in Chinese patients with Huntington's disease and controls. Eur J Neurol 2014; 21:637-42. [PMID: 24471773 DOI: 10.1111/ene.12366] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Accepted: 12/17/2013] [Indexed: 02/05/2023]
Affiliation(s)
- H. Jiang
- Department of Neurology; Xiangya Hospital; Central South University; Changsha China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders; State Key Laboratory of Medical Genetics of China; Central South University; Changsha China
| | - Y. M. Sun
- Department of Neurology; Institute of Neurology; Huashan Hospital; Shanghai Medical College; Fudan University; Shanghai China
| | - Y. Hao
- Department of Neurology; China−Japan Friendship Hospital; Beijing China
| | - Y. P. Yan
- Department of Neurology; Second Affiliated Hospital; College of Medicine; Zhejiang University; Hangzhou China
| | - K. Chen
- Department of Neurology; West China Hospital; Sichuan University; Chengdu China
| | - S. H. Xin
- First Affiliated Hospital of Sun Yat-Sen University; Guangzhou China
| | - Y. P. Tang
- Department of Medical Genetics; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - X. H. Li
- First Affiliated Hospital of Sun Yat-Sen University; Guangzhou China
| | - T. Jun
- Department of Neurology; Second Affiliated Hospital; College of Medicine; Zhejiang University; Hangzhou China
| | - Y. Y. Chen
- Department of Neurology; China−Japan Friendship Hospital; Beijing China
| | - Z. J. Liu
- Department of Neurology; Institute of Neurology; Huashan Hospital; Shanghai Medical College; Fudan University; Shanghai China
| | - C. R. Wang
- Department of Neurology; Xiangya Hospital; Central South University; Changsha China
| | - H. Li
- Department of Medical Genetics; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Z. Pei
- First Affiliated Hospital of Sun Yat-Sen University; Guangzhou China
| | - H. F. Shang
- Department of Neurology; West China Hospital; Sichuan University; Chengdu China
| | - B. R. Zhang
- Department of Neurology; Second Affiliated Hospital; College of Medicine; Zhejiang University; Hangzhou China
| | - W. H. Gu
- Department of Neurology; China−Japan Friendship Hospital; Beijing China
| | - Z. Y. Wu
- Department of Neurology; Institute of Neurology; Huashan Hospital; Shanghai Medical College; Fudan University; Shanghai China
| | - B. S. Tang
- Department of Neurology; Xiangya Hospital; Central South University; Changsha China
| | - J.-M. Burgunder
- Department of Neurology; Xiangya Hospital; Central South University; Changsha China
- Department of Neurology; West China Hospital; Sichuan University; Chengdu China
- First Affiliated Hospital of Sun Yat-Sen University; Guangzhou China
- Swiss Huntington's Disease Centre; Department of Neurology; University of Bern; NeuroBu Clinics; Bern Switzerland
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Li J, Lu X, Wu Q, Yu G, Xu Z, Qiu L, Pei Z, Lin Y, Pang J. Design, SAR, Angiogenic Activities Evaluation and Pro-Angiogenic Mechanism of New Marine Cyclopeptide Analogs. Curr Med Chem 2013; 20:1183-94. [DOI: 10.2174/0929867311320090007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 11/30/2012] [Accepted: 12/20/2012] [Indexed: 11/22/2022]
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Zheng Y, Wu Q, Fang Y, He Y, Zhou H, Liu Y, Chen J, Xian W, Fu X, Shen C, Guo C, Chen L, Pei Z. 3.050 THE ASSOCIATION BETWEEN LRRK2 S1647T POLYMORPHISM AND COGNITIVE FUNCTION IN PARKINSON'S DISEASE. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70786-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Xian W, Fu X, Chen J, Liu Y, Zheng Y, Liu J, Zhou X, Li J, Liu Z, Pei Z, Chen L. 2.309 BILATERAL SUBTHALAMIC NUCLEUS STIMULATION VERSUS PREOPERATIVE MEDICAL THERAPY IN PARKINSON'S DISEASE: A SYSTEMATIC REVIEW OF STUDIES WITH ONE YEAR FOLLOW-UP. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70632-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Fu X, Liu J, Liu Y, Xian W, Chen J, Zheng Y, Zhou H, He Y, Li J, Liu Z, Pei Z, Chen L. 2.324 THE BILATERAL STN-DBS CAN IMPROVE MOTOR AND NON-MOTOR SYMPTOMS IN MODERATE AND ADVANCED PD PATIENTS: A TWO-YEAR FOLLOW-UP STUDY. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70647-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Liu Y, Fu X, Xian W, Zheng Y, Chen J, Zhou H, Pei Z, Chen L. 2.325 THE BILATERAL STN-DBS CAN IMPROVE MOTOR AND NONMOTOR SYMPTOMS IN PATIENTS OF PARKINSON'S DISEASE: A ONE-YEAR FOLLOW-UP STUDY. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70648-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Gao L, Zheng Z, Cao L, Shen S, Yang Y, Zhao Z, Zhi D, Cheng R, Pei Z, Yongfu Y, Luo F. The growth hormone receptor (GHR) exon 3 polymorphism and its correlation with metabolic profiles in obese Chinese children. Pediatr Diabetes 2011; 12:429-34. [PMID: 21470351 DOI: 10.1111/j.1399-5448.2010.00747.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [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: 12/01/2022] Open
Abstract
OBJECTIVE We investigated the correlation between the growth hormone receptor (GHR) exon 3 polymorphism and the metabolic profiles of Chinese children with obesity. SUBJECTS AND METHODS A total of 409 obese/overweight children and 206 normal weight children were recruited. Anthropological and biochemical indexes including insulin and lipid profiles were measured. Genomic DNA was extracted from the peripheral blood leukocytes, and the GHR exon 3 polymorphism was genotyped by polymerase chain reaction. Homeostasis model of assessment for insulin resistance index (HOMA-IR) and insulin sensitivity index (ISI) were calculated using the homeostasis model. RESULTS The frequency of the exon 3-deleted GHR (d3-GHR) polymorphism within the obese group was significantly higher than that of the control group (p < 0.05). Body mass index (BMI), fasting insulin (FIns), HOMA-IR, total cholesterol, and triglycerides were significantly lower in the d3-GHR (d3/d3 and d3/fl) group than in the full-length GHR (fl/fl, fl-GHR) group (p < 0.05). After adjustment for BMI, cholesterol level was still significantly lower and HOMA-IR was marginally lower (p = 0.079) in the d3-GHR obese group. There was no statistically significant difference in BMI, FIns, HOMA-IR, ISI, total cholesterol, or triglyceride levels between the two genotypes in the control group. CONCLUSION We report that the d3-GHR polymorphism has a significant effect on BMI and the metabolic parameters of Chinese children with obesity. The d3 allele may have a protective effect on the development of metabolic syndrome by increasing insulin sensitivity.
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Affiliation(s)
- Lingling Gao
- Children's Hospital of Fudan University, Pediatric Endocrinology and Inborn Metabolic Diseases, Shanghai, China
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Zheng Y, Liu Y, Wu Q, Hong H, Zhou H, Chen J, Wang H, Xian W, Li J, Liu Z, Pei Z, Chen L. Confirmation of LRRK2 S1647T variant as a risk factor for Parkinson's disease in southern China. Eur J Neurol 2011; 18:538-40. [PMID: 20629711 DOI: 10.1111/j.1468-1331.2010.03164.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Leucine-rich repeat kinase 2 (LRRK2) S1647T has been identified as a risk variant for Parkinson's disease (PD) in Han Chinese. METHODS To replicate the association of LRRK2 S1647T with risk of PD, we conducted a case-control study of this variant involving 406 PD subjects and 412 controls from southern mainland China. RESULTS The results showed that the frequency of A allele was higher in patients with PD (OR=1.238, 95% CI: 1.015-1.510, P=0.035) compared to controls. In a multivariate logistic regression analysis with the disease group (patients with PD vs. controls) as the dependent variable and genotype as an independent factor adjusting for the effect of age and gender, the homozygous S1647T genotype (AA) was associated with an increased risk of PD (OR=1.815, 95% CI:1.270-2.594, P=0.001). The pooled analysis of present data and the data from the previous work demonstrated that the frequency of A allele was higher in patients with PD (OR=1.2, 95% CI: 1.09-1.32, P<0.0001). CONCLUSIONS LRRK2 S1647T increases the risk of Parkinson's disease in southern China.
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Affiliation(s)
- Y Zheng
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Yang Q, Qu L, Tian H, Hu Y, Peng J, Yu X, Yu C, Pei Z, Wang G, Shi B, Zhang F, Zhang Y, Zhang F. Prevalence and characteristics of psoriatic arthritis in Chinese patients with psoriasis. J Eur Acad Dermatol Venereol 2011; 25:1409-14. [PMID: 21349114 DOI: 10.1111/j.1468-3083.2011.03985.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND The prevalence and clinical characteristics of psoriatic arthritis (PsA) in patients with psoriasis vary widely in different countries and studies on Chinese population are rarely reported. OBJECTIVE The aim of this study was to evaluate the prevalence and clinical characteristics of PsA in a Chinese population of patients with psoriasis. METHODS A large cross-sectional observational study was conducted in our outpatient dermatology department and consecutive psoriatic patients were evaluated for PsA according to Classification of Psoriatic arthritis (CASPAR) criteria. Demographic and medical parameters were recorded. RESULTS Among 1928 patients with psoriasis, 112 patients (5.8%) had PsA, of which 92% was newly diagnosed. Oligoarthritis (48.2%) was the most common manifestation pattern, followed by spondylitis (26.8%), polyarthritis (19.6%) and classic distal interphalangeal (DIP) arthritis (5.4%). Enthesitis was present in 26.8% and dactylitis in 13.4% of the patients. Compared with patients without PsA, patients with PsA had more severe skin disease (mean PASI 9.7 vs. 6.0), higher frequency of nail changes (46.4% vs. 21.0%) and scalp involvement (90.2% vs. 76.4%). CONCLUSION The findings are consistent with a low prevalence of PsA among patients with psoriasis in Asia and confirm a high percentage of undiagnosed cases with active arthritis among PsA patients in dermatologist's office. Dermatologists should screen for PsA in their patients, especially those with risk characteristics and early signs.
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Affiliation(s)
- Q Yang
- Shandong Clinical College of Skin Diseases, Anhui Medical University, Jinan, Shandong, China
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