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Viant MR, Amstalden E, Athersuch T, Bouhifd M, Camuzeaux S, Crizer DM, Driemert P, Ebbels T, Ekman D, Flick B, Giri V, Gómez-Romero M, Haake V, Herold M, Kende A, Lai F, Leonards PEG, Lim PP, Lloyd GR, Mosley J, Namini C, Rice JR, Romano S, Sands C, Smith MJ, Sobanski T, Southam AD, Swindale L, van Ravenzwaay B, Walk T, Weber RJM, Zickgraf FM, Kamp H. Demonstrating the reliability of in vivo metabolomics based chemical grouping: towards best practice. Arch Toxicol 2024; 98:1111-1123. [PMID: 38368582 PMCID: PMC10944399 DOI: 10.1007/s00204-024-03680-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 01/15/2024] [Indexed: 02/19/2024]
Abstract
While grouping/read-across is widely used to fill data gaps, chemical registration dossiers are often rejected due to weak category justifications based on structural similarity only. Metabolomics provides a route to robust chemical categories via evidence of shared molecular effects across source and target substances. To gain international acceptance, this approach must demonstrate high reliability, and best-practice guidance is required. The MetAbolomics ring Trial for CHemical groupING (MATCHING), comprising six industrial, government and academic ring-trial partners, evaluated inter-laboratory reproducibility and worked towards best-practice. An independent team selected eight substances (WY-14643, 4-chloro-3-nitroaniline, 17α-methyl-testosterone, trenbolone, aniline, dichlorprop-p, 2-chloroaniline, fenofibrate); ring-trial partners were blinded to their identities and modes-of-action. Plasma samples were derived from 28-day rat tests (two doses per substance), aliquoted, and distributed to partners. Each partner applied their preferred liquid chromatography-mass spectrometry (LC-MS) metabolomics workflows to acquire, process, quality assess, statistically analyze and report their grouping results to the European Chemicals Agency, to ensure the blinding conditions of the ring trial. Five of six partners, whose metabolomics datasets passed quality control, correctly identified the grouping of eight test substances into three categories, for both male and female rats. Strikingly, this was achieved even though a range of metabolomics approaches were used. Through assessing intrastudy quality-control samples, the sixth partner observed high technical variation and was unable to group the substances. By comparing workflows, we conclude that some heterogeneity in metabolomics methods is not detrimental to consistent grouping, and that assessing data quality prior to grouping is essential. We recommend development of international guidance for quality-control acceptance criteria. This study demonstrates the reliability of metabolomics for chemical grouping and works towards best-practice.
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Affiliation(s)
- Mark R Viant
- Phenome Centre Birmingham, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
| | - E Amstalden
- Amsterdam Institute for Life and Environment (A-LIFE), Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands
| | - T Athersuch
- Division of Systems Medicine, Department of Metabolism, Digestion and Reproduction, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
| | - M Bouhifd
- European Chemicals Agency, Telakkakatu 6, FI-00121, Helsinki, Finland
| | - S Camuzeaux
- Department of Metabolism, Digestion and Reproduction, National Phenome Centre, Imperial College London, London, W12 0NN, UK
| | - D M Crizer
- Division of Translational Toxicology, National Institute of Environmental Health Sciences, Research Triangle Park, NC, 27709, USA
| | - P Driemert
- BASF Metabolome Solutions GmbH, Tegeler Weg 33, 10589, Berlin, Germany
| | - T Ebbels
- Division of Systems Medicine, Department of Metabolism, Digestion and Reproduction, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
| | - D Ekman
- Center for Environmental Measurement and Modeling, Environmental Protection Agency, Athens, GA, 30605, USA
| | - B Flick
- BASF SE, Carl-Bosch-Str 38, 67056, Ludwigshafen, Germany
- NUVISAN ICB GmbH, Toxicology, 13353, Berlin, Germany
| | - V Giri
- BASF SE, Carl-Bosch-Str 38, 67056, Ludwigshafen, Germany
| | - M Gómez-Romero
- Department of Metabolism, Digestion and Reproduction, National Phenome Centre, Imperial College London, London, W12 0NN, UK
| | - V Haake
- BASF Metabolome Solutions GmbH, Tegeler Weg 33, 10589, Berlin, Germany
| | - M Herold
- BASF Metabolome Solutions GmbH, Tegeler Weg 33, 10589, Berlin, Germany
| | - A Kende
- Syngenta, Jealott's Hill International Research Centre, Bracknell, RG42 6EY, UK
| | - F Lai
- Syngenta, Jealott's Hill International Research Centre, Bracknell, RG42 6EY, UK
| | - P E G Leonards
- Amsterdam Institute for Life and Environment (A-LIFE), Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands
| | - P P Lim
- Syngenta, Jealott's Hill International Research Centre, Bracknell, RG42 6EY, UK
| | - G R Lloyd
- Phenome Centre Birmingham, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - J Mosley
- Center for Environmental Measurement and Modeling, Environmental Protection Agency, Athens, GA, 30605, USA
| | - C Namini
- Center for Environmental Measurement and Modeling, Environmental Protection Agency, Athens, GA, 30605, USA
| | - J R Rice
- Division of Translational Toxicology, National Institute of Environmental Health Sciences, Research Triangle Park, NC, 27709, USA
| | - S Romano
- Center for Environmental Measurement and Modeling, Environmental Protection Agency, Athens, GA, 30605, USA
| | - C Sands
- Department of Metabolism, Digestion and Reproduction, National Phenome Centre, Imperial College London, London, W12 0NN, UK
| | - M J Smith
- Phenome Centre Birmingham, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - T Sobanski
- European Chemicals Agency, Telakkakatu 6, FI-00121, Helsinki, Finland
| | - A D Southam
- Phenome Centre Birmingham, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - L Swindale
- Syngenta, Jealott's Hill International Research Centre, Bracknell, RG42 6EY, UK
| | - B van Ravenzwaay
- BASF SE, Carl-Bosch-Str 38, 67056, Ludwigshafen, Germany
- Environmental Sciences Consulting, 67122, Altrip, Germany
| | - T Walk
- BASF Metabolome Solutions GmbH, Tegeler Weg 33, 10589, Berlin, Germany
| | - R J M Weber
- Phenome Centre Birmingham, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - F M Zickgraf
- BASF SE, Carl-Bosch-Str 38, 67056, Ludwigshafen, Germany
| | - H Kamp
- BASF Metabolome Solutions GmbH, Tegeler Weg 33, 10589, Berlin, Germany
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Chen W, Lai F, Huang X, Yu S, Chen N, Xu C, Wang C, Liang S, Li Y, Xiao H, Cao X. Comparison of plasma aldosterone measured by chemiluminescence immunoassay and liquid chromatography-tandem mass spectrometry in screening test for primary aldosteronism. Pract Lab Med 2024; 39:e00361. [PMID: 38318433 PMCID: PMC10840321 DOI: 10.1016/j.plabm.2024.e00361] [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: 10/10/2023] [Revised: 01/14/2024] [Accepted: 01/18/2024] [Indexed: 02/07/2024] Open
Abstract
Background Whether chemiluminescence immunoassay (CLIA) and liquid chromatography-tandem mass spectrometry (LC-MS/MS) for plasma aldosterone concentration (PAC) measurement can be used interchangeably in primary aldosteronism (PA) screening is still controversial. The purpose of this study was to compare CLIA to LC-MS/MS for PAC measurement in PA screening. Methods All participants underwent aldosterone-to-renin ratio (ARR) testing. PA was diagnosed by captopril challenge test or saline infusion test. PAC in screening test was measured with CLIA and LC-MS/MS. Plasma direct renin concentration in screening and confirmatory test was measured with CLIA. The concordance between CLIA and LC-MS/MS for PAC measurement in PA screening was analyzed. Results Twenty-one healthy volunteers, 61 patients with essential hypertension (EH) and 43 PA patients were enrolled. Median PAC by CLIA was 84.7 % higher than that by LC-MS/MS in screening test (P < 0.001). A positive correlation of PAC was observed between the two assays (Pearson r coefficient 0.770, P < 0.001). When ARR was used in differentiating PA from EH, there was no difference in the area under the receiver operating characteristic curve between CLIA and LC-MS/MS for PAC measurement (0.968 vs 0.950, P = 0.249). Conclusion CLIA and LC-MS/MS for PAC measurement exhibited high and comparable efficacy in PA screening. CLIA is a reliable and feasible alternative in PA screening test.
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Affiliation(s)
| | | | - Xiaoyu Huang
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Shuang Yu
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Nan Chen
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Changliu Xu
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Chenxue Wang
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Shuhui Liang
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yanbing Li
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Haipeng Xiao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xiaopei Cao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
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Luo S, Lai F, Liang R, Li B, He Y, Chen W, Zhang J, Li X, Xu T, Hou Y, Liu Y, Long J, Yang Z, Chen X. Clinical prediction models for cervical lymph node metastasis of papillary thyroid carcinoma. Endocrine 2024:10.1007/s12020-023-03632-z. [PMID: 38175390 DOI: 10.1007/s12020-023-03632-z] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 11/23/2023] [Indexed: 01/05/2024]
Abstract
PURPOSE Accurate preoperative diagnosis of lymph node metastasis (LNM) in papillary thyroid carcinoma (PTC) remains an unsolved problem. This study aimed to construct a nomogram and scoring system for predicting LNM based on the clinical characteristics of patients with PTC. METHODS 1400 patients with PTC who underwent thyroidectomy and lymph node dissection at the First Affiliated Hospital of Sun Yat-sen University were retrospectively enrolled and randomly divided into training and internal testing sets. Furthermore, 692 patients with PTC from three other medical centers were collected as external testing sets. Least absolute shrinkage and selection operator (LASSO) was used to screen the predictors, and a nomogram was constructed. In addition, a scoring system was constructed using 10-fold cross-validation. The performances of the two models were verified among datasets and compared with preoperative ultrasound (US). RESULTS Six independent predictors were included in the multivariate logistic model: age, sex, US diagnosis of LNM, tumor diameter, location, and thyroid peroxidase antibody level. The areas under the receiver operating characteristic curve (AUROC) (95% confidence interval) of this nomogram in the training, internal testing, and three external testing sets were 0.816 (0.791-0.840), 0.782 (0.727-0.837), 0.759 (0.699-0.819), 0.749 (0.667-0.831), and 0.777 (0.726-0.828), respectively. The AUROC of the scoring system were 0.810 (0.785-0.835), 0.772 (0.718-0.826), 0.736 (0.675-0.798), 0.717 (0.635-0.799) and 0.756 (0.704-0.808), respectively. The prediction performances were both significantly superior to those of preoperative US (P < 0.001). CONCLUSION The nomogram and scoring system performed well in different datasets and significantly improved the preoperative prediction of LNM than US alone.
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Affiliation(s)
- Shuli Luo
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Fenghua Lai
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Ruiming Liang
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Bin Li
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yufei He
- Department of Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Wenke Chen
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jiayuan Zhang
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xuyang Li
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Tianyi Xu
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yingtong Hou
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yihao Liu
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jianyan Long
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
| | - Zheng Yang
- Department of Pathology, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China.
| | - Xinwen Chen
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
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Zhou G, Xie D, Fan R, Yang Z, Du J, Mai S, Xie L, Wang Q, Mai T, Han Y, Lai F. Comparison of Pulmonary and Extrapulmonary Models of Sepsis-Associated Acute Lung Injury. Physiol Res 2023; 72:741-752. [PMID: 38215061 PMCID: PMC10805253] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 09/09/2023] [Indexed: 01/14/2024] Open
Abstract
To compare different rat models of sepsis at different time points, based on pulmonary or extrapulmonary injury mechanisms, to identify a model which is more stable and reproducible to cause sepsis-associated acute lung injury (ALI). Adult male Sprague-Dawley rats were subjected to (1) cecal ligation and puncture (CLP) with single (CLP1 group) or two repeated through-and-through punctures (CLP2 group); (2) tail vein injection with lipopolysaccharide (LPS) of 10mg/kg (IV-LPS10 group) or 20 mg/kg (IV-LPS20 group); (3) intratracheal instillation with LPS of 10mg/kg (IT-LPS10 group) or 20mg/kg (IT-LPS20 group). Each of the model groups had a sham group. 7-day survival rates of each group were observed (n=15 for each group). Moreover, three time points were set for additional experimental studying in each model group: 4 hours, 24 hours and 48 hours after modeling (every time point, n=8 for each group). Rats were sacrificed to collect BALF and lung tissue samples at different time points for detection of IL-6, TNF-alpha, total protein concentration in BALF and MPO activity, HMGB1 protein expression in lung tissues, as well as the histopathological changes of lung tissues. More than 50 % of the rats died within 7 days in each model group, except for the IT-LPS10 group. In contrast, the mortality rates in the two IV-LPS groups as well as the IT-LPS20 group were significantly higher than that in IT-LPS10 group. Rats received LPS by intratracheal instillation exhibited evident histopathological changes and inflammatory exudation in the lung, but there was no evidence of lung injury in CLP and IV-LPS groups. Rat model of intratracheal instillation with LPS proved to be a more stable and reproducible animal model to cause sepsis-associated ALI than the extrapulmonary models of sepsis.
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Affiliation(s)
- G Zhou
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
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Yue S, Pei L, Lai F, Xiao H, Li Z, Zeng R, Chen L, Chen W, Liu H, Li Y, Xiao H, Cao X. Genome-wide analysis study of gestational diabetes mellitus and related pathogenic factors in a Chinese Han population. BMC Pregnancy Childbirth 2023; 23:856. [PMID: 38087213 PMCID: PMC10714520 DOI: 10.1186/s12884-023-06167-3] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 12/02/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Gestational diabetes mellitus (GDM) affects the metabolism of both the mother and fetus during and after pregnancy. Genetic factors are important in the pathogenesis of GDM, and associations vary by ethnicity. However, related studies about the relationship between the susceptibility genes and glucose traits remain limited in China. This study aimed to identify genes associated with GDM susceptibility in Chinese Han women and validate those findings using clinical data during pregnancy and postpartum period. METHODS A genome-wide association study (GWAS) of 398 Chinese Han women (199 each with and without GDM) was conducted and associations between single nucleotide polymorphisms (SNPs) and glucose metabolism were identified by searching public databases. Relationships between filtered differential SNPs and glucose metabolism were verified using clinical data during pregnancy. The GDM group were followed up postpartum to evaluate the progression of glucose metabolism. RESULTS We identified five novel SNPs with genome-wide significant associations with GDM: rs62069863 in TRPV3 gene and rs2232016 in PRMT6 gene were positive correlated with 1 h plasma glucose (1hPG) and 2 h plasma glucose (2hPG), rs1112718 in HHEX/EXOC6 gene and rs10460009 in LPIN2 gene were positive associated with fasting plasma glucose, 1hPG and 2hPG, rs927316 in GLIS3 gene was negative correlated with 2hPG. Of the 166 GDM women followed up postpartum, rs62069863 in TRPV3 gene was positively associated with fasting insulin, homoeostasis model assessment of insulin resistance. CONCLUSIONS The variants of rs62069863 in TRPV3 gene, rs2232016 in PRMT6 gene, rs1112718 in HHEX/EXOC6 gene, rs927316 in GLIS3 gene, and rs10460009 in LPIN2 gene were newly-identified susceptibility loci for GDM in the Chinese Han population. TRPV3 was associated with worse insulin resistance postpartum. TRIAL REGISTRATION This study was registered in the Chinese Clinical Trial Registry. TRIAL REGISTRATION NUMBER ChiCTR2100043762. Date of first registration: 28/02/2021.
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Affiliation(s)
- Shufan Yue
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Ling Pei
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Fenghua Lai
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Huangmeng Xiao
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Zeting Li
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Rui Zeng
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Li Chen
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Wenzhan Chen
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Huiling Liu
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Yanbing Li
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Haipeng Xiao
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Xiaopei Cao
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China.
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Lai F, Li B, Mei J, Zhou Q, Long J, Liang R, Mo R, Peng S, Liu Y, Xiao H. The Impact of Vaccination Time on the Antibody Response to an Inactivated Vaccine against SARS-CoV-2 (IMPROVE-2): A Randomized Controlled Trial. Adv Biol (Weinh) 2023; 7:e2300028. [PMID: 37300345 DOI: 10.1002/adbi.202300028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 05/22/2023] [Indexed: 06/12/2023]
Abstract
There is still controversy about whether severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination at different times of day will induce a stronger immune response. Therefore, a randomized controlled trial (ChiCTR2100045109) is conducted to investigate the impact of vaccination time on the antibody response to the inactivated vaccine against SARS-CoV-2 from April 15 to 28, 2021. Participants are randomly assigned in a 1:1 ratio to receive inactivated SARS-CoV-2 vaccine in the morning or afternoon. The primary endpoint is the change of neutralizing antibody between baseline and 28 days after the second dose. In total, 503 participants are randomized, and 469 participants (238 in the morning group and 231 in the afternoon group) complete the follow-up. There is no significant difference in the change of neutralizing antibody between baseline and 28 days after the second dose between the morning and afternoon groups (22.2 [13.2, 45.0] AU mL-1 vs 22.0 [14.4, 40.7] AU mL-1 , P = 0.873). In prespecified age and sex subgroup analyses, there is also no significant difference in the morning and afternoon group (all P > 0.05). This study demonstrates that the vaccination time does not affect the antibody response of two doses of inactivated SARS-CoV-2 vaccine.
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Affiliation(s)
- Fenghua Lai
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, Zhongshan Road 2, Guangzhou, Guangdong, 510080, China
| | - Bin Li
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, Zhongshan Road 2, Guangzhou, Guangdong, 510080, China
| | - Jie Mei
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, Zhongshan Road 2, Guangzhou, Guangdong, 510080, China
| | - Qian Zhou
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, Zhongshan Road 2, Guangzhou, Guangdong, 510080, China
| | - Jianyan Long
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, Zhongshan Road 2, Guangzhou, Guangdong, 510080, China
| | - Ruiming Liang
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, Zhongshan Road 2, Guangzhou, Guangdong, 510080, China
| | - Ruohui Mo
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, Zhongshan Road 2, Guangzhou, Guangdong, 510080, China
| | - Sui Peng
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, Zhongshan Road 2, Guangzhou, Guangdong, 510080, China
| | - Yihao Liu
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, Zhongshan Road 2, Guangzhou, Guangdong, 510080, China
| | - Haipeng Xiao
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, Zhongshan Road 2, Guangzhou, Guangdong, 510080, China
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Pei L, Lai F, Chen W, Zeng R, Chen N, Li Y, Xiao H, Cao X. Pancreatic-derived factor predicts remission of impaired glucose tolerance women with history of gestational diabetes. Diabetes Res Clin Pract 2023; 204:110892. [PMID: 37657647 DOI: 10.1016/j.diabres.2023.110892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 08/16/2023] [Accepted: 08/30/2023] [Indexed: 09/03/2023]
Abstract
AIM To clarify whether pancreatic derived factor (PANDER) predicts the remission of impaired glucose tolerance (IGT) due to lifestyle intervention among women with history of gestational diabetes mellitus (GDM). METHODS IGT women with GDM history in a prospective cohort study were enrolled at 4-12 weeks postpartum and grouped based on PANDER level at recruitment. After lifestyle intervention, glucose metabolism examined was performed at one year postpartum. The relation between PANDER level and glycemic outcome was analyzed with logistic regression and receiver operating characteristic (ROC) curves. RESULTS In total, 48.7% (55/113) of subjects returned to normal glucose tolerance at one year postpartum. Compared to those with low PANDER group, women among high PANDER group and very high PANDER group were associated with a lower remission of IGT. These associations remained in multivariable logistic regression. The area under the ROC curve (AUC) of PANDER level for the remission of IGT was 0.702 (95% CI 0.595-0.809). When PANDER level was combined with clinical information, the AUC reached 0.812 (95% CI 0.725-0.899; P < 0.001). CONCLUSION Circulating PANDER concentration is inversely associated with the remission of IGT in women with GMD history at one year postpartum.
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Affiliation(s)
- Ling Pei
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Fenghua Lai
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wenzhan Chen
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Rui Zeng
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Nan Chen
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yanbing Li
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Haipeng Xiao
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiaopei Cao
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
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8
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Liu Y, Lai F, Lin B, Gu Y, Chen L, Chen G, Xiao H, Luo S, Pang Y, Xiong D, Li B, Peng S, Lv W, Alexander EK, Xiao H. Deep learning to predict cervical lymph node metastasis from intraoperative frozen section of tumour in papillary thyroid carcinoma: a multicentre diagnostic study. EClinicalMedicine 2023; 60:102007. [PMID: 37251623 PMCID: PMC10209138 DOI: 10.1016/j.eclinm.2023.102007] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/26/2023] [Accepted: 04/27/2023] [Indexed: 05/31/2023] Open
Abstract
Background Lymph node metastasis (LNM) assessment in patients with papillary thyroid carcinoma (PTC) is of great value. This study aimed to develop a deep learning model applied to intraoperative frozen section for prediction of LNM in PTC patients. Methods We established a deep-learning model (ThyNet-LNM) with the multiple-instance learning framework to predict LNM using whole slide images (WSIs) from intraoperative frozen sections of PTC. Data for the development and validation of ThyNet-LNM were retrospectively derived from four hospitals from January 2018 to December 2021. The ThyNet-LNM was trained using 1987 WSIs from 1120 patients obtained at the First Affiliated Hospital of Sun Yat-sen University. The ThyNet-LNM was then validated in the independent internal test set (479 WSIs from 280 patients) as well as three external test sets (1335 WSIs from 692 patients). The performance of ThyNet-LNM was further compared with preoperative ultrasound and computed tomography (CT). Findings The area under the receiver operating characteristic curves (AUCs) of ThyNet-LNM were 0.80 (95% CI 0.74-0.84), 0.81 (95% CI 0.77-0.86), 0.76 (95% CI 0.68-0.83), and 0.81 (95% CI 0.75-0.85) in internal test set and three external test sets, respectively. The AUCs of ThyNet-LNM were significantly higher than those of ultrasound and CT or their combination in all four test sets (all P < 0.01). Of 397 clinically node-negative (cN0) patients, the rate of unnecessary lymph node dissection decreased from 56.4% to 14.9% by ThyNet-LNM. Interpretation The ThyNet-LNM showed promising efficacy as a potential novel method in evaluating intraoperative LNM status, providing real-time guidance for decision. Furthermore, this led to a reduction of unnecessary lymph node dissection in cN0 patients. Funding National Natural Science Foundation of China, Guangzhou Science and Technology Project, and Guangxi Medical High-level Key Talents Training "139" Program.
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Affiliation(s)
- Yihao Liu
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Fenghua Lai
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Bo Lin
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yunquan Gu
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Lili Chen
- Department of Pathology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Gang Chen
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center for Artificial Intelligence Analysis of Multimodal Tumour Images, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Han Xiao
- Division of Interventional Ultrasound, Department of Medical Ultrasonics, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Shuli Luo
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yuyan Pang
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center for Artificial Intelligence Analysis of Multimodal Tumour Images, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Dandan Xiong
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center for Artificial Intelligence Analysis of Multimodal Tumour Images, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Bin Li
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Sui Peng
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Weiming Lv
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Erik K. Alexander
- Thyroid Section, Brigham & Women's Hospital, Harvard Medical School, Boston, USA
| | - Haipeng Xiao
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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9
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Kende A, Lai F, Lim PP, Swindale L, Hofstra A, Zhang F, McInnes E, Currie R, Cowie D. Mode of Action Hypothesis Testing in Chemical Safety Assessments Using Metabolomics as Supporting Evidence: Phenobarbital and Cyclobutrifluram Metabolomics Profile Comparison. Toxicol Lett 2023; 382:13-21. [PMID: 37164126 DOI: 10.1016/j.toxlet.2023.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 03/29/2023] [Accepted: 04/17/2023] [Indexed: 05/12/2023]
Abstract
In long term rodent studies administering Cyclobutrifluram (TYMIRIUM® Technology), a new agrochemical, there was a slight elevation of incidence of hepatocellular carcinomas in male CD-1 mice that was within the historical control range but appeared to be dose responsive. Cyclobutrifluram's ability to activate mouse constitutive androstane receptor (CAR) mediated gene transcription was confirmed in vitro, therefore a 28-day dietary toxicity study was conducted in vivo in male CD-1 mice to assess the CAR activation mode of action hypothesis of Cyclobutrifluram along with phenobarbital, a known CAR activator. In addition to other end points comprehensive (polar and lipidomic) hybrid metabolomics analyses were performed on terminal plasma and liver samples following 2-, 7- and 28-days dietary exposure to cyclobutrifluram and phenobarbital. The data generation and quality assessments were performed in line with the principles of the MEtabolomics standaRds Initiative in Toxicology (MERIT). First the full annotated feature set was used to compare the metabolomic changes induced by the administration of the two test substances using Shared and Unique Structures plots. This gave a comprehensive overview of the similarity of the two effect profiles showing good correlation and demonstrated that no other, alternative effect signatures were detected. Then the phenobarbital induced differentially abundant metabolites were selected, compared to the literature and their direction of change was assessed in cyclobutrifluram profiles, finding good agreement. Both approaches concluded that the metabolomics data supports the CAR activation hypothesis. Comparison of the metabolomic effect profiles can be a line of evidence in mode of action hypothesis testing in the chemical risk assessment process.
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Affiliation(s)
- A Kende
- Syngenta Jealott's Hill International Research Centre, Syngenta Canada Inc, Guelph, Canada
| | - F Lai
- Syngenta Jealott's Hill International Research Centre, Syngenta Canada Inc, Guelph, Canada.
| | - P P Lim
- Syngenta Jealott's Hill International Research Centre, Syngenta Canada Inc, Guelph, Canada
| | - L Swindale
- Syngenta Jealott's Hill International Research Centre, Syngenta Canada Inc, Guelph, Canada
| | - A Hofstra
- Syngenta Jealott's Hill International Research Centre, Syngenta Canada Inc, Guelph, Canada
| | - F Zhang
- Syngenta Jealott's Hill International Research Centre, Syngenta Canada Inc, Guelph, Canada
| | - E McInnes
- Syngenta Jealott's Hill International Research Centre, Syngenta Canada Inc, Guelph, Canada
| | - R Currie
- Syngenta Jealott's Hill International Research Centre, Syngenta Canada Inc, Guelph, Canada
| | - D Cowie
- Syngenta Jealott's Hill International Research Centre, Syngenta Canada Inc, Guelph, Canada
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10
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Chen N, Zeng R, Xu C, Lai F, Chen L, Wang C, Pei L, Li Z, Li Y, Xiao H, Cao X. Low Serum Creatinine Levels in Early Pregnancy Are Associated with a Higher Incidence of Postpartum Abnormal Glucose Metabolism among Women with Gestational Diabetes Mellitus: A Retrospective Cohort Study. Nutrients 2023; 15:2193. [PMID: 37432359 DOI: 10.3390/nu15092193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/28/2023] [Accepted: 05/03/2023] [Indexed: 07/12/2023] Open
Abstract
The predictive factors for the progression from gestational diabetes mellitus (GDM) to type 2 diabetes remain incompletely elucidated. Our objective was to investigate the link between serum creatinine, a proxy for skeletal muscle mass, and the development of postpartum abnormal glucose metabolism (AGM). METHODS A retrospective review of the medical records of 501 women with GDM was conducted, all of whom underwent a 75 g oral glucose tolerance test (OGTT) between 4 and 12 weeks postpartum. Women were grouped based on quartiles of serum creatinine at the first antenatal visit to estimate the association between serum creatinine and postpartum AGM incidence. RESULTS Compared with the highest quartile of creatinine, lower quartiles were substantially linked to an increased incidence of postpartum AGM (adjusted odds ratios 3.37 [95% CI 1.77-6.42], 2.42 [95% CI 1.29-4.51] and 2.27 [95% CI 1.23-4.18], respectively). The generalized additive model suggested a linear relationship between serum creatinine levels and the risk of postpartum AGM below 68 µmol/L of serum creatinine levels. A decrease of 2 μmol/L in serum creatinine levels was found to be associated with a 10% increase in the odds of developing postpartum AGM. Linear regression revealed that a low serum creatinine level was linked to a higher postpartum 2-h glucose level and a decreased insulinogenic index (p = 0.007 and p = 0.027, respectively). CONCLUSIONS An association was observed between lower serum creatinine levels in early pregnancy and an increased risk of postpartum AGM and poorer β-cell function in women with a recent history of GDM. Further research is needed to understand the mechanisms underlying our findings, as well as the role of skeletal muscle mass or nutritional status in early pregnancy on later glucose metabolism.
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Affiliation(s)
- Nan Chen
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou 510080, China
| | - Rui Zeng
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou 510080, China
| | - Changliu Xu
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou 510080, China
| | - Fenghua Lai
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou 510080, China
| | - Li Chen
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou 510080, China
| | - Chenxue Wang
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou 510080, China
| | - Ling Pei
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou 510080, China
| | - Zhuyu Li
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou 510080, China
| | - Yanbing Li
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou 510080, China
| | - Haipeng Xiao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou 510080, China
| | - Xiaopei Cao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou 510080, China
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Liu Y, Zhang H, Yuan G, Yao M, Li B, Chen J, Fan Y, Mo R, Lai F, Chen X, Li M, Chen B, Lord JM, Peng S, Cheng K, Xiao H. The impact of circadian rhythms on the immune response to influenza vaccination in middle-aged and older adults (IMPROVE): a randomised controlled trial. Immun Ageing 2022; 19:46. [PMID: 36253778 PMCID: PMC9574181 DOI: 10.1186/s12979-022-00304-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 10/10/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND Vaccination is important in influenza prevention but the immune response wanes with age. The circadian nature of the immune system suggests that adjusting the time of vaccination may provide an opportunity to improve immunogenicity. Our previous cluster trial in Birmingham suggested differences between morning and afternoon vaccination for some strains in the influenza vaccine in older adults. Whether this effect is also seen in a younger age group with less likelihood of compromised immunity is unknown. We therefore conducted an individual-based randomized controlled trial in Guangzhou to test the hypothesis that influenza vaccination in the morning induces a stronger immune response in older adults than afternoon vaccination. We included adults in middle age to determine if the effect was also seen in younger age groups. RESULTS Of the 418 participants randomised, 389 (93.1%, 191 middle-aged adults aged 50-60 years and 198 older adults aged 65-75 years) were followed up. Overall, there was no significant difference between the antibody titers (geometric mean /95% CI) after morning vs afternoon vaccination (A/H1N1: 39.9 (32.4, 49.1) vs. 33.0 (26.7, 40.7), p = 0.178; A/H3N2: 92.2 (82.8, 102.7) vs. 82.0 (73.8, 91.2), p = 0.091; B: 15.8 (13.9, 17.9) vs. 14.4 (12.8, 16.3), p = 0.092), respectively. However, in pre-specified subgroup analyses, post-vaccination titers for morning versus afternoon vaccination in the 65-75 years subgroup were (A/H1N1): 49.5 (36.7, 66.6) vs. 32.9 (24.7, 43.9), p = 0.050; (A/H3N2): 93.5 (80.6, 108.5) vs. 73.1 (62.9, 84.9), p = 0.021; (B): 16.6 (13.8, 20.1) vs. 14.4 (12.3, 17.0), p = 0.095, respectively. Among females, antibody titers for morning versus afternoon vaccination were (A/H1N1): 46.9 (35.6, 61.8) vs. 31.1 (23.8, 40.7), p = 0.030; (A/H3N2): 96.0 (83.5, 110.3) vs. 84.7 (74.4, 96.5), p = 0.176; (B): 14.8 (12.7, 17.3) vs. 13.0 (11.3, 14.9), p = 0.061, respectively. In the 50-60 years old subgroup and males, there were no significant differences between morning and afternoon vaccination. CONCLUSIONS Morning vaccination may enhance the immunogenicity to influenza vaccine in adults aged over 65 and women. An intervention to modify vaccination programs to vaccinate older individuals in the morning is simple, cost free and feasible in most health systems.
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Affiliation(s)
- Yihao Liu
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, ZhongShan Road 2, Guangzhou, Guangdong, 510080, People's Republic of China.,Department of Endocrinology, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, ZhongShan Road 2, Guangzhou, Guangdong, 510080, People's Republic of China
| | - Hui Zhang
- Department of Rheumatology and Clinical Immunology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China.,Institute of Precision Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Gang Yuan
- Phase I Clinical Trial Center, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China.,Department of Geriatrics, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Mi Yao
- Institute of Applied Health Research, University of Birmingham, Public Health Building, Edgbaston, Birmingham, B15 2TT, UK
| | - Bin Li
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, ZhongShan Road 2, Guangzhou, Guangdong, 510080, People's Republic of China
| | - Jianying Chen
- Baiyun Street Community Health Service Center, Guangzhou, 510080, People's Republic of China
| | - Yuling Fan
- Shipai Street Community Health Service Center, Guangzhou, 510080, People's Republic of China
| | - Ruohui Mo
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, ZhongShan Road 2, Guangzhou, Guangdong, 510080, People's Republic of China
| | - Fenghua Lai
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, ZhongShan Road 2, Guangzhou, Guangdong, 510080, People's Republic of China
| | - Xinwen Chen
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, ZhongShan Road 2, Guangzhou, Guangdong, 510080, People's Republic of China
| | - Mengyuan Li
- Department of Rheumatology and Clinical Immunology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Binfeng Chen
- Department of Rheumatology and Clinical Immunology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Janet M Lord
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK.,NIHR Birmingham Biomedical Research Centre, University Hospital Birmingham and University of Birmingham, Birmingham, UK
| | - Sui Peng
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, ZhongShan Road 2, Guangzhou, Guangdong, 510080, People's Republic of China.
| | - KarKeung Cheng
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, ZhongShan Road 2, Guangzhou, Guangdong, 510080, People's Republic of China. .,Institute of Applied Health Research, University of Birmingham, Public Health Building, Edgbaston, Birmingham, B15 2TT, UK.
| | - Haipeng Xiao
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-Sen University, No. 58, ZhongShan Road 2, Guangzhou, Guangdong, 510080, People's Republic of China.
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12
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Li L, Chen X, Li B, Liu D, Liu Y, Mo R, Lai F, Liu R, Peng S, Li Y, Liu M, Xiao H. Effect of Inactivated SARS-CoV-2 Vaccine on Thyroid Function and Autoimmunity Within 28 Days After the Second Dose. Thyroid 2022; 32:1051-1058. [PMID: 35864805 DOI: 10.1089/thy.2022.0101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Background: The safety of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccines is widely appreciated. However, there is limited knowledge regarding the potential impact of SARS-CoV-2 vaccines on the thyroid. Methods: We performed two prospective clinical trials between April and June, 2021, enrolling recipients of the inactivated SARS-CoV-2 vaccine (BBIBP-CorV and CoronaVac). Thyroid function, antithyroid antibody levels, and SARS-CoV-2 neutralizing antibody levels were detected for each participant before receiving the first vaccine dose and 28 days after receiving the second vaccine dose. Results: A total of 657 recipients participated in the study. The overall median thyroid function and levels of antithyroid antibodies before and after SARS-CoV-2 vaccination were within the normal range. Among the 564 participants with normal thyroid function at baseline, 36 (6.38% [confidence interval; CI 4.51-8.73]) developed thyroid dysfunction. Of the 545 recipients with negative antithyroid antibodies at baseline, none developed abnormal antibodies after vaccination. Notably, 75.27% (70/93 [CI 65.24-83.63]) of the 93 recipients with thyroid dysfunction returned to normal function after vaccination. The levels of antithyroid peroxidase antibody (96.20% [CI 89.30-99.21]) and antithyroglobulin antibody (TgAb; 88.31% [CI 78.97-94.51]) remained positive after vaccination in most patients with abnormal values at baseline. However, the TgAb levels in more than half of the patients (48/77) decreased. All of 11 abnormal thyrotropin receptor antibody levels at baseline decreased postvaccination. Conclusions: Vaccination with an inactivated SARS-CoV-2 vaccine had no significant adverse impact on thyroid function or antithyroid antibodies within the first 28 days after the second dose. Clinical Trial Registration: ChiCTR2100045109 and ChiCTR2100042222.
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Affiliation(s)
- Liubing Li
- Department of Laboratory Medicine, Guangzhou, People's Republic of China
| | - Xinwen Chen
- Department of Endocrinology, Guangzhou, People's Republic of China
| | - Bin Li
- Department of Clinical Trials Unit; Guangzhou, People's Republic of China
- Department of Institute of Precision Medicine; The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Dayue Liu
- Department of Medical Affairs; Guangzhou, People's Republic of China
| | - Yihao Liu
- Department of Endocrinology, Guangzhou, People's Republic of China
- Department of Clinical Trials Unit; Guangzhou, People's Republic of China
| | - Ruohui Mo
- Department of Clinical Trials Unit; Guangzhou, People's Republic of China
| | - Fenghua Lai
- Department of Endocrinology, Guangzhou, People's Republic of China
| | - Rengyun Liu
- Department of Institute of Precision Medicine; The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Sui Peng
- Department of Clinical Trials Unit; Guangzhou, People's Republic of China
- Department of Institute of Precision Medicine; The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Yanbing Li
- Department of Endocrinology, Guangzhou, People's Republic of China
| | - Min Liu
- Department of Laboratory Medicine, Guangzhou, People's Republic of China
| | - Haipeng Xiao
- Department of Endocrinology, Guangzhou, People's Republic of China
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Navarro Sánchez L, Ocali O, García Pascual C, Mamede Andrade G, Castelló Salom D, Lai F, Gross Dutra C, Rubio C, Simon C, Frantz N, Sakkas D. P-551 High concordance of the embryonic cell-free DNA with the inner cell mass: impact of blastocyst quality, patient age and mode of fertilization. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Study question
Does the embryonic cell-free DNA (cfDNA) in the culture medium represent the chromosomal content of the inner cell mass (ICM)? Which factors impact concordance rates?
Summary answer
There is high ploidy concordance between ICM biopsies and embryonic cfDNA. This value is independent of female age, insemination technique and embryo quality.
What is known already
The existence of embryonic cfDNA in spent blastocyst medium (SBM) has been confirmed in recent studies, opening a new era of possibilities for non-invasive preimplantation genetic testing for aneuploidy (niPGT-A). High concordance rates of cfDNA with trophectoderm (TE) biopsies and with whole blastocysts have been reported. However, the compartment(s) from where this DNA originates remain unclear. Both TE and ICM are potential sources, but, at the moment, the origin of this cfDNA is unknown as well as the mechanisms underlying its secretion into the medium.
Study design, size, duration
We carried out a prospective study to investigate the concordance of cfDNA with the corresponding TE and ICM biopsies. 141 day-6/7 blastocysts were donated for research after written informed consent signature for the project approved by the Ethics Committee. Embryos underwent TE biopsy and SBM collection in the same PGT-A cycle. ICM biopsy in thawed blastocysts was performed after TE biopsy diagnosis. cfDNA, TE and ICM biopsies were analyzed from January 2019 to November 2021.
Participants/materials, setting, methods
Embryos were cultured in routine conditions up to day 4. They were then washed and transferred to a new 10μl culture medium droplet. On day 6, SBM was collected and frozen at -20 °C; and blastocyst biopsy and vitrification were performed. Subsequently, blastocysts were thawed and ICM biopsy was conducted. All samples were analyzed by NGS (Ion ReproSeq PGS kit, ThermoFisher Scientific) and the results were analyzed with customized algorithms for TE, ICM and cfDNA.
Main results and the role of chance
In combination, the three sample types (cfDNA, ICM and TE) were informative in 81.6% of the blastocysts (115/141).
Considering the ICM as the reference, ploidy concordance (i.e. being both euploid or aneuploid) for cfDNA was 86.1% (99/115) and for TE was 89.6% (103/115), without statistical difference. False positive rates were similar for cfDNA and for TE biopsies (6.1% and 9.6%, respectively), and false negative rates were not significantly different, but higher in cfDNA (7.8%) than in TE (0.9%), due to potential contamination with maternal DNA. Ploidy concordance between embryo cfDNA and TE biopsies was 89.6% (103/115).
When the results were stratified by female age (≤37 or > 37 years), insemination technique (ICSI or IVF), blastocyst expansion degree (expanded, hatching or fully hatched), and ICM/TE quality (A or B), the informativity of the cfDNA was very similar between the different groups and ranged from 83.7% to 100%. Nevertheless, there were subtle differences for ICM-cfDNA ploidy concordance. It was slightly increased for the older female age group (88.3% vs 83.6% female age ≤37) as well as for ICSI (89.7% vs 82.5% in IVF) and for ICM quality B (88.4% vs 80.0% for ICM A). None of those differences reached statistical significance.
Limitations, reasons for caution
When stratifying according to the different criteria, the sample size analyzed was too small to draw strong conclusions. Therefore, more studies, with bigger sample size, are needed to replicate the results.
Wider implications of the findings
The embryonic cfDNA released to the culture medium provides information of the overall blastocyst chromosomal constitution, as suggested by the high ploidy concordance rates reported between ICM and cfDNA. This supports the use of niPGT-A as an alternative to other invasive aneuploidy detection methods that require a biopsy.
Trial registration number
ClinicalTrials.gov. ID NCT03520933
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Affiliation(s)
| | - O Ocali
- Boston IVF, Laboratory , Boston, U.S.A
| | | | - G Mamede Andrade
- Nilo Frantz Reproductive Medicine, Laboratory , Porto Alegre, Brazil
| | | | - F Lai
- Boston IVF, Laboratory , Boston, U.S.A
| | - C Gross Dutra
- Nilo Frantz Reproductive Medicine, Laboratory , Porto Alegre, Brazil
| | - C Rubio
- Igenomix, Embryo Research, Paterna- Valencia , Spain
| | - C Simon
- Igenomix Foundation- INCLIVA, Scientific Board , Valencia, Spain
| | - N Frantz
- Nilo Frantz Reproductive Medicine, Scientific Board , Porto Alegre, Brazil
| | - D Sakkas
- Boston IVF, Laboratory , Boston, U.S.A
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14
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An X, Xiao L, Yang X, Tang X, Lai F, Liang XH. Economic burden of public health care and hospitalisation associated with COVID-19 in China. Public Health 2022; 203:65-74. [PMID: 35032917 PMCID: PMC8754688 DOI: 10.1016/j.puhe.2021.12.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 11/10/2021] [Accepted: 12/01/2021] [Indexed: 02/07/2023]
Abstract
OBJECTIVES This study aimed to evaluate the socio-economic burden imposed on the Chinese healthcare system during the coronavirus disease 2019 (COVID-19) pandemic. STUDY DESIGN A cross-sectional study was used to investigate how COVID-19 impacted health and medical costs in China. Data were derived from a subdivision of the Centers for Disease control and Prevention of China. METHODS We prospectively collected information from the Centers for Disease Control and Prevention and the designated hospitals to determine the cost of public health care and hospitalisation due to COVID-19. We estimated the resource use and direct medical costs associated with public health. RESULTS The average costs, per case, for specimen collection and nucleic acid testing (NAT [specifically, polymerase chain reaction {PCR}]) in low-risk populations were $29.49 and $53.44, respectively; however, the average cost of NAT in high-risk populations was $297.94 per capita. The average costs per 1000 population for epidemiological surveys, disinfectant, health education and centralised isolation were $49.54, $247.01, $90.22 and $543.72, respectively. A single hospitalisation for COVID-19 in China cost a median of $2158.06 ($1961.13-$2325.65) in direct medical costs incurred only during hospitalisation, whereas the total costs associated with hospitalisation of patients with COVID-19 were estimated to have reached nearly $373.20 million in China as of 20, May, 2020. The cost of public health care associated with COVID-19 as of 20, May, 2020 ($6.83 billion) was 18.31 times that of hospitalisation. CONCLUSIONS This study highlights the magnitude of resources needed to treat patients with COVID-19 and control the COVID-19 pandemic. Public health measures implemented by the Chinese government have been valuable in reducing the infection rate and may be cost-effective ways to control emerging infectious diseases.
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Affiliation(s)
- X An
- Department of Clinical Epidemiology and Biostatistics, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - L Xiao
- Disease Control and Prevention Center of Jiulongpo District, Chongqing, China
| | - X Yang
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin, China
| | - X Tang
- Department of Clinical Epidemiology and Biostatistics, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - F Lai
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiao-Hua Liang
- Department of Clinical Epidemiology and Biostatistics, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China.
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15
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Chen N, Chen Y, Lai F, Chen L, Zeng R, Pei L, Wu L, Wang C, Li Y, Xiao H, Cao X. Circulating GLP-1 Levels in Patients with Pheochromocytoma/Paraganglioma. Int J Endocrinol 2022; 2022:4203018. [PMID: 36569401 PMCID: PMC9771646 DOI: 10.1155/2022/4203018] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 11/03/2022] [Accepted: 11/03/2022] [Indexed: 12/15/2022] Open
Abstract
The sympathoadrenal system has been shown to stimulate the secretory activity of enteroendocrine cells, although the response is transient. Our aim was to investigate the effects of long-term catecholamine excess on circulating glucagon-likepeptide-1 (GLP-1) levels in patients with pheochromocytoma/paraganglioma (PPGL). Thirty patients diagnosed with PPGL were analyzed. A significant negative association was observed between fasting plasma GLP-1 levels and elevated plasma-free metanephrine (r = -0.407, p = 0.026). After adjustment for age, sex, body mass index (BMI), serum creatinine, and the presence of hyperglycemia, the negative association between plasma GLP-1 and metanephrine persisted by multiple linear regression analysis (β = -0.493, p = 0.013). Positive correlations between fasting glucose and plasma metanephrine (r = 0.380, p = 0.038) and normetanephrine levels (r = 0.450, p = 0.013) were also found. Mean fasting levels of total GLP-1 increased significantly from 25.81 to 39.01 pmol/L (p = 0.017) after PPGL resection. In conclusion, long-term overproduction of catecholamines appears to induce suppression of GLP-1 production compared to an acute response to a stress stimulus. Further studies are required to elucidate the mechanism of GLP-1 secretion with chronic exposure to catecholamine.
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Affiliation(s)
- Nan Chen
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou 510080, China
| | - Yan Chen
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou 510080, China
| | - Fenghua Lai
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou 510080, China
| | - Li Chen
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou 510080, China
| | - Rui Zeng
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou 510080, China
| | - Ling Pei
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou 510080, China
| | - Liting Wu
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou 510080, China
| | - Chenxue Wang
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou 510080, China
| | - Yanbing Li
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou 510080, China
| | - Haipeng Xiao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou 510080, China
| | - Xiaopei Cao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou 510080, China
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Lai F, Li Z, Yue S, Pei L, Xiao H, Li Z, Li Y, Xiao H, Cao X. Early postpartum abnormal glucose metabolism subtype differs according to mid-trimester lipid profile in women with gestational diabetes mellitus. Lipids Health Dis 2021; 20:91. [PMID: 34429117 PMCID: PMC8386098 DOI: 10.1186/s12944-021-01519-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 08/10/2021] [Indexed: 12/15/2022] Open
Abstract
Background It is unknown whether early postpartum abnormal glucose metabolism (AGM) in women with previous gestational diabetes mellitus (GDM) is related to their mid-trimester lipid profile. The aim of this study was to characterize the mid-trimester lipid profile of women who experienced GDM and developed into different pathophysiologic subtypes of early postpartum AGM. Methods A retrospective cohort study of 498 women with history of GDM was conducted. A 75-g oral glucose tolerance test (OGTT) and plasma lipid measurements were performed at 24–28 weeks of gestation and 6–12 weeks of postpartum. Insulin secretion and sensitivity were estimated using early postpartum OGTT-based indices. Results Women in the mid-trimester dyslipidemia group had higher postpartum 30-min and 2-h plasma glucose, higher postpartum 2-h plasma insulin, higher postpartum triglyceride (TG), higher postpartum low density lipoprotein cholesterol (LDL-c) concentrations, lower postpartum 30-min insulinogenic index (IGI30), lower postpartum insulin sensitivity index (ISI), and lower postpartum disposition index than those in the normal lipid group (all P < 0.05). Abnormal mid-trimester TG and LDL-c concentrations were associated with postpartum AGM (adjusted odds ratio [OR] = 1.786, 95 % confidence interval [CI] = 1.142–2.425; and adjusted OR = 1.621, 95 % CI = 1.323–2.051, respectively; both P < 0.05). AGM women with low IGI30 and low ISI had higher mid-trimester total cholesterol and LDL-c concentrations, and AGM women with low ISI had higher mid-trimester TG concentrations than women with NGT or other subtypes of AGM (all P < 0.05). Conclusions GDM women with abnormal mid-trimester TG and LDL-c were predisposed to early postpartum AGM. Postpartum AGM women who experienced GDM had heterogeneous mid-trimester lipid profile when classified according to their pathophysiologic subtype.
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Affiliation(s)
- Fenghua Lai
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, 510080, Guangzhou, China
| | - Zeting Li
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, 510080, Guangzhou, China
| | - Shufan Yue
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, 510080, Guangzhou, China
| | - Ling Pei
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, 510080, Guangzhou, China
| | - Huangmeng Xiao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, 510080, Guangzhou, China
| | - Zhuyu Li
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-sen University, 510080, Guangzhou, China
| | - Yanbing Li
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, 510080, Guangzhou, China
| | - Haipeng Xiao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, 510080, Guangzhou, China
| | - Xiaopei Cao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, 510080, Guangzhou, China.
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Esiso F, Lai F, Cunningham D, Garcia D, Barrett B, Sakkas D. P–225 The effect of rapid and delayed insemination on reproductive outcome in conventional insemination and intracytoplasmic sperm injection invitro-fertilization cycles. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
Does rapid or delayed insemination after egg retrieval affect fertilization, blastocyst development and live birth rates in CI and ICSI cycles?
Summary answer
When performing CI or ICSI <1.5h and >6.5h after retrieval, detrimental effects are moderate on fertilization but do not impact blastocyst usage and birth rates.
What is known already
Several studies have shown that CIor ICSI performed between 3 to 5 h after oocyte retrieval has improved laboratory outcomes. However, some studies indicate that insemination of oocytes, by either CI or ICSI, within 2 hours or more than 8 hours after oocyte retrieval has a detrimental effect on the reproductive outcome. With some ART centres experiencing an increase in workload, respecting these exact time intervals is frequently challenging.
Study design, size, duration
A single-center retrospective cohort analysis was performed on 6559 patients (9575 retrievals and insemination cycles) between January 1st2017 to July 31st2019. The main outcome measures were live-birth rates. Secondary outcomes included analysis of fertilization per all oocytes retrieved, blastocyst utilization, clinical pregnancy, and miscarriage rates. All analyses used time of insemination categorized in both CI and ICSI cycles. Fertilization rates across categories was analyzed by ANOVA and pregnancy outcomes compared using Chi-square tests.
Participants/materials, setting, methods
As part of laboratory protocol, oocyte retrieval was performed 36 h post-trigger. Cycles involving injection with testicular/epidydimal sperm, donor or frozen oocytes were excluded. The time interval between oocyte retrieval and insemination was analyzed in eight categories: 0 (0- <0.5h), 1 (0.5-<1.5h), 2 (1.5-<2.5h), 3 (2.5-<3.5h), 4 (3.5-<4.5), 5 (4.5-<5.5), 6 (5.5-<6.5) and 7 (6.5-<8h). The number of retrievals in each group (0–7) was 586, 1594, 1644, 1796, 1836, 1351, 641 and 127 respectively.
Main results and the role of chance
This study had a mean patient age of 36.0 years and mean of 12.2 oocytes per retrieval in each category. There were 4,955 CI and 4,620 ICSI retrievals. The smallest groups were time category 7 and 0 for CI and ICSI respectively. The results showed that the mean fertilization rate per egg retrieved for CI ranged from 54.1 to 64.9% with a significant difference between time category 0 and 5 (p < 0.001) and category 1 and 5 (p < 0.0.001). Mean fertilization rate for ICSI per egg retrieved ranged from 52.8 to 67.3% with no significant difference between time categories compared to category 5. Blastocyst utilization rate for CI and ICSI were not significantly different for all time categories. In the CI and ICSI groups there were 6,540 and 6,178 total fresh and frozen transfers. The miscarriage and clinical pregnancy rate in CI and ICSI were not significantly different across time categories. The overall mean live birth rate for CI was 32.4% (range: 23.1 to 35.5%). Live-birth rates differed significantly (p = 0.04) in CI with time categories 0 and 7 the lowest. In the ICSI group, the overall mean live birth rate was 30.8% (range: 29.1 to 35.7%),with no significant differences between time categories.
Limitations, reasons for caution
As this is a retrospective study, the influence of uncontrolled variables cannot be excluded. The group spread was uneven with the early and late time categories having the lowest number of representative retrievals and this could have affected the results obtained.
Wider implications of the findings: Our results indicate that both CI and ICSI are optimal when performed between 1.5–6.5 hours after oocyte retrieval. Further prospective studies on reproductive outcomes related to time of insemination are warranted. This data indicates a minimal detrimental effect when it is untenable to follow strict insemination time intervals.
Trial registration number
2015P000122
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Affiliation(s)
- F Esiso
- BSM-University Pompeo Fabrau, Masters in Human Assisted Reproduction Technology, Barcelona, Spain
| | - F Lai
- Boston IVF, Embryology, Waltham, USA
| | | | - D Garcia
- Clínica Eugin, Department of Research and Development, Barcelona, Spain
| | - B Barrett
- Boston IVF, Embryology, Waltham, USA
| | - D Sakkas
- Boston IVF, Embryology, Waltham, USA
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Zheng Q, Lai F, Li B, Xu J, Long J, Peng S, Li Y, Liu Y, Xiao H. Association Between Prospective Registration and Quality of Systematic Reviews in Type 2 Diabetes Mellitus: A Meta-epidemiological Study. Front Med (Lausanne) 2021; 8:639652. [PMID: 34262914 PMCID: PMC8273164 DOI: 10.3389/fmed.2021.639652] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 06/04/2021] [Indexed: 12/01/2022] Open
Abstract
Background: We sought to investigate the methodological and reporting quality of published systematic reviews describing randomized controlled trials in type 2 diabetes mellitus and analyze their association with status of protocol registration. Methods: We searched the PubMed database and identified non-Cochrane systematic reviews, with or without meta-analysis, reporting on type 2 diabetes mellitus and published between 2005 and 2018. We then randomly selected 20% of these reviews in each year, and performed methodological and reporting quality assessment using the Assessment of Multiple Systematic Review 2 (AMSTAR-2) checklist and Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) statement. We also conducted regression analyses to explore the association between characteristics of systematic reviews and AMSTAR-2 or PRISMA scores. Results: A total of 238 systematic reviews, including 33 registered and 205 non-registered articles, met the inclusion criteria and were subsequently reviewed. Analysis indicated an increase in both registered rates and quality of systematic reviews in type 2 diabetes mellitus over the recent years. With regards to methodological and reporting quality, we found higher scores in registered, relative to non-registered reviews (AMSTAR-2 mean score: 18.0 vs. 14.5, P = 0.000; PRISMA mean score: 20.4 vs. 17.6, P = 0.000). AMSTAR-2 and PRISMA scores were associated with registration status, country of the first author, and statistical results, whereas the proportion of discussing publication bias and reporting funding sources were <40% for both registered and non-registered systematic reviews. Conclusions: Methodological and reporting quality of systematic reviews in type 2 diabetes mellitus indicates an improvement in the recent years. However, the overall quality remains low, necessitating further improvement. Future studies are expected to pay more attention to prospective registration, description of publication bias and reporting of funding sources.
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Affiliation(s)
- Qiuyi Zheng
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Fenghua Lai
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Bin Li
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jia Xu
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jianyan Long
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Sui Peng
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yanbing Li
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yihao Liu
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Haipeng Xiao
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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Liang R, Long J, Zheng Q, Yuan G, Chen X, Xin Z, Lai F, Liu Y. Current landscape of type 1 diabetes mellitus-related interventional clinical trials registered on ClinicalTrials.gov: a cross-sectional study. Acta Diabetol 2021; 58:723-733. [PMID: 33543370 DOI: 10.1007/s00592-020-01627-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 10/25/2020] [Indexed: 10/22/2022]
Abstract
AIMS A better understanding of the current features of type 1 diabetes mellitus (T1DM)-related interventional clinical trials is important for improving clinical trial designs and identifying neglected research areas. Therefore, this study aimed to comprehensively assess T1DM-related interventional clinical trials registered in the ClinicalTrials.gov database. METHODS In this cross-sectional study, T1DM-related clinical trials registered in the ClinicalTrials.gov database were searched on July 1, 2020. The characteristics of the relevant trials were assessed. PubMed and Google Scholar were used to search for publication statuses of primary completed studies. RESULTS Overall, 1,421 T1DM-related interventional clinical trials were identified for analysis. Of those trials, 509 (35.8%) involved children and 912 (64.2%) involved only adults. Overall, 63.2% of trials enrolled < 50 participants and 61.9% were registered after patient recruitment. Most trials were single-centered (66.0%). The proportions of trials with children were higher than those with only adults with respect to the primary purpose of health service or prevention (13.6% vs. 4.8%), intervention of device (30.8% vs. 23.9%), education or lifestyle (28.9% vs. 11.3%), and dietary supplement (5.7% vs. 2.5%) (all P < 0.01). Only 24.0% of trials had available results after primary completion. The 5-year cumulative publication rate after primary trial completion was < 40%. CONCLUSIONS T1DM-related interventional clinical trials registered in ClinicalTrials.gov were dominated by small single-center studies. Most trials lacked the availability of results and their respective publications. Large multicenter interventional clinical trials on T1DM are needed, and more attention should be paid to improve the publication and dissemination of clinical trials results.
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Affiliation(s)
- Ruiming Liang
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Jianyan Long
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Qiuyi Zheng
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Gang Yuan
- Phase I Clinical Trial Center, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Xinwen Chen
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Ziyi Xin
- Department of Medical Records, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Fenghua Lai
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China.
| | - Yihao Liu
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China.
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China.
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20
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Long J, Liang R, Zheng Q, Yuan G, Xin Z, Chen X, Lai F, Liu Y. Overview of Clinical Trials on Type 2 Diabetes Mellitus: A Comprehensive Analysis of the ClinicalTrials.gov Database. Diabetes Metab Syndr Obes 2021; 14:367-377. [PMID: 33531823 PMCID: PMC7847376 DOI: 10.2147/dmso.s288065] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 01/07/2021] [Indexed: 12/13/2022] Open
Abstract
PURPOSE A better understanding of the current features of type 2 diabetes mellitus (T2DM)-related clinical trials is important for improving designs of clinical trials and identifying neglected areas of research. It was hypothesized that the trial registration policy promoted the designs of T2DM-related trials over the years. Therefore, this study aimed to present a comprehensive overview of T2DM-related clinical trials registered in the ClinicalTrials.gov database. METHODS T2DM-related clinical trials registered in the ClinicalTrials.gov database were searched and assessed the characteristics of the relevant trials. We searched PubMed and Google Scholar for the publication statuses of the primary completed trials. RESULTS Overall, 5117 T2DM-related trials were identified for analysis. Of the interventional trials, 71.5% had a primary treatment purpose while only 8.9% were prevention or health service. There were more interventional trials registered prior to patient recruitment between 2012 and 2019 than between 2004 and 2011 (44.6% vs 19.9%, P<0.001). The period between 2012 and 2019 also had more trials that enrolled <100 participants (59.2% vs 50.9%), were single-center studies (60.7% vs 50.6%), had non-randomized allocations (11.3% vs 6.3%), were open-label (49.2% vs 45.6%), and had smaller sample sizes than the period between 2004 and 2011 (all P<0.001). The five-year cumulative publication rates after primary completion of the trials were <40%. CONCLUSION Although the ClinicalTrials.gov database did not include all clinical trials, the trials registered in the ClinicalTrials.gov database still accounted for most of the clinical studies. Encouragingly, more interventional trials were registered prior to patient recruitment over the years. The majority of T2DM-related clinical trials focused on drug-related treatment, and trials regarding prevention in T2DM should be promoted. More attention should be paid to improve the publication and dissemination of clinical trials results.
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Affiliation(s)
- Jianyan Long
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou510080, People’s Republic of China
| | - Ruiming Liang
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou510080, People’s Republic of China
| | - Qiuyi Zheng
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou510080, People’s Republic of China
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou510080, People’s Republic of China
| | - Gang Yuan
- Phase I Clinical Trial Center, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou510080, People’s Republic of China
| | - Ziyi Xin
- Department of Medical Records, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou510080, People’s Republic of China
| | - Xinwen Chen
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou510080, People’s Republic of China
| | - Fenghua Lai
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou510080, People’s Republic of China
| | - Yihao Liu
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou510080, People’s Republic of China
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou510080, People’s Republic of China
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Lai F, Pei L, Yue S, Cao X, Xiao H, Li Y, Li J. Translation and validation of the Chinese version of medical maximizer-minimizer scale: a cross-sectional study. BMJ Open 2021; 11:e042432. [PMID: 33408206 PMCID: PMC7789444 DOI: 10.1136/bmjopen-2020-042432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVE Medical overutilisation and underutilisation affect optimal healthcare. The Medical Maximizer-Minimizer Scale (MMS) was developed to assess individual medical maximising and minimising tendencies. Despite significant improvement in the healthcare system over the past four decades, no psychometric scales to examine treatment maximising and minimising preferences are available in China. This study aimed to translate the MMS into Chinese and examine its reliability and validity in a Chinese population. DESIGN This cross-sectional study was conducted in December 2019 through an online survey panel. METHODS The MMS was translated into a Chinese version (CN-MMS) using a forward-backward translation procedure. Next, a random online survey of the general population in China was conducted. Exploratory factor analysis (EFA) and confirmatory factor analysis were performed to examine the underlying factor structure of the CN-MMS. The internal consistency reliability of the scale was determined using Cronbach's α coefficient and corrected item-total correlation. A multivariate linear regression analysis was used to examine associations between medical maximising and minimising preferences and demographic variables in the Chinese population. RESULTS This study included 984 participants aged 18-80 years. The CN-MMS retained 10 items, and the EFA supported a two-factor structure. The model fit for this two-factor structure of the CN-MMS was acceptable with χ2/df=3.7, comparative fit index=0.958, goodness-of-fit index=0.951, Tucker-Lewis Index=0.944 and root mean square error of approximation=0.074. The scale had a Cronbach's α coefficient of 0.864, corrected item-total correlation of 0.451-0.667, and test-retest reliability of 0.815. Significant predictors of CN-MMS total score were nationality and household monthly income. CONCLUSIONS The CN-MMS showed satisfactory psychometric properties. Therefore, it can be used to investigate the individual medical maximising and minimising tendencies among the general Chinese population.
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Affiliation(s)
- Fenghua Lai
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ling Pei
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shufan Yue
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiaopei Cao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Haipeng Xiao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yanbing Li
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jin Li
- Department of Geriatrics, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Lai F, Pei L, Chen X, Li J. Osteoporosis-Related Randomized Clinical Trials With Middle-Aged and Older Adults Registered on the International Clinical Trials Registry Platform. Front Endocrinol (Lausanne) 2021; 12:702261. [PMID: 34531824 PMCID: PMC8438405 DOI: 10.3389/fendo.2021.702261] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 08/13/2021] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND A better understanding of the current features of osteoporosis-related randomized clinical trials (RCTs) is important for improving clinical trial designs and promoting the translatability of results into benefits for patients. However, there is a lack of thorough evaluation of osteoporosis-related RCTs in middle-aged and older populations. Therefore, this study aimed to investigate the characteristics of registered RCTs on osteoporosis among middle-aged and older adults on the International Clinical Trials Registry Platform (ICTRP). METHODS Osteoporosis-related RCTs registered on the ICTRP were searched on December 31, 2020. The main features of eligible RCTs were assessed. We searched PubMed, Google scholar, Medline, and Embase databases for the publication status of completed RCTs. RESULTS A total of 537 osteoporosis-related RCTs were identified for analysis. The number of registered RCTs increased rapidly in 2005 (N = 47). Of these, 346 (64.4%) RCTs involved only women and 275 (51.2%) were retrospectively registered. Most RCTs were of open-label design (61.3%). The most common primary purpose of osteoporosis-related RCTs was treatment (72.3%). Intervention investigated was mainly focused on medication (62.8%), followed by lifestyle or education (19.0%), and dietary supplement (10.4%). After trial completion, the results of only 140 (35.5%) RCTs were available on the ICTRP, and the publication rate after trial completion was 30.5%. CONCLUSIONS RCTs on osteoporosis among middle-aged and older adults were dominated by retrospectively registered and open-label trials. Most trials lacked available results and associated publications. More awareness of prospective registration and blinding design in osteoporosis-related RCTs is needed. Further, publication and dissemination of RCTs results should be promoted.
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Affiliation(s)
- Fenghua Lai
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ling Pei
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xinwen Chen
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jin Li
- Department of Geriatrics, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Jin Li,
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Pei L, Xiao H, Lai F, Li Z, Li Z, Yue S, Chen H, Li Y, Cao X. Early postpartum dyslipidemia and its potential predictors during pregnancy in women with a history of gestational diabetes mellitus. Lipids Health Dis 2020; 19:220. [PMID: 33036614 PMCID: PMC7547505 DOI: 10.1186/s12944-020-01398-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 10/01/2020] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND This study aimed to analyze the incidence of early postpartum dyslipidemia and its potential predictors in women with a history of gestational diabetes mellitus (GDM). METHODS This was a retrospective study. Five hundred eighty-nine women diagnosed with GDM were enrolled and followed up at 6-12 weeks after delivery. A 75 g oral glucose tolerance test (OGTT) and lipid levels were performed during mid-trimester and the early postpartum period. Participants were divided into the normal lipid group and dyslipidemia group according to postpartum lipid levels. Demographic and metabolic parameters were analyzed. Multiple logistic regression was performed to analyze the potential predictors for early postpartum dyslipidemia. A receiver operating characteristic curve (ROC) was calculated to determine the cut-off values. RESULTS A total of 38.5% of the 589 women developed dyslipidemia in early postpartum and 60% of them had normal glucose metabolism. Delivery age, systolic blood pressure (SBP), glycated hemoglobin (HbA1c) and low-density lipoprotein cholesterol (LDL-C) were independent predictors of early postpartum dyslipidemia in women with a history of GDM. The cut-offs of maternal age, SBP, HbA1c values, and LDL-C levels were 35 years, 123 mmHg, 5.1%, and 3.56 mmol/L, respectively. LDL-C achieved a balanced mix of high sensitivity (63.9%) and specificity (69.2%), with the highest area under the receiver operating characteristic curve (AUC) (0.696). When LDL-C was combined with age, SBP, and HbA1c, the AUC reached to 0.733. CONCLUSIONS A lipid metabolism evaluation should be recommended in women with a history of GDM after delivery, particularly those with a maternal age > 35 years, SBP > 123 mmHg before labor, HbA1c value > 5.1%, or LDL-C levels > 3.56 mmol/L in the second trimester of pregnancy.
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Affiliation(s)
- Ling Pei
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou, 510080, China
| | - Huangmeng Xiao
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou, 510080, China
| | - Fenghua Lai
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou, 510080, China
| | - Zeting Li
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou, 510080, China
| | - Zhuyu Li
- Department of Obstetrics and Gynecology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shufan Yue
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou, 510080, China
| | - Haitian Chen
- Department of Obstetrics and Gynecology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yanbing Li
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou, 510080, China
| | - Xiaopei Cao
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd, Guangzhou, 510080, China.
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Liu Y, Lai F, Long J, Peng S, Wang H, Zhou Q, Li B, Su L, Gan L, Shi Y, Lv W, Li Y, Cheng K, Xiao H. Screening and the epidemic of thyroid cancer in China: An analysis of national representative inpatient and commercial insurance databases. Int J Cancer 2020; 148:1106-1114. [PMID: 32930403 PMCID: PMC7821127 DOI: 10.1002/ijc.33298] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 07/17/2020] [Revised: 08/21/2020] [Accepted: 09/08/2020] [Indexed: 12/29/2022]
Abstract
Reasons behind the rapid increase of thyroid cancer (TC) in China are uncertain. We assessed the burden of TC and the role of access to screening and salt iodization. We analyzed two national databases in China: Hospital Quality Monitoring System (HQMS) and China Reinsurance Company (CRC) database. HQMS covered 1037 (44.3%) Class 3 hospitals and 76 263 617 Class 3 hospital inpatients in 2013 to 2017 and CRC covered 93 123 018 clients in 2000 to 2016. The proportion of TC inpatients among inpatients in HQMS and TC incidence in critical illness insurance buyers were used to evaluate the association with screening and iodine status. Between 2013 and 2017, the proportion of TC patients in HQMS with urban employee medical insurance and good access to screening increased sharply while there was little change among those with the other two forms of medical insurance. Across provinces, the proportion of TC inpatients in HQMS was positively correlated with per capita disposable income but not with median urinary iodine. Similar findings were observed in the CRC database. In 2017, approximately 1000 individuals were overdiagnosed with TC daily. We conservatively forecast that 5.1 million healthy individuals would become TC patients unnecessarily between 2019 and 2030. Our findings suggested the epidemic of TC in China was substantially underestimated. It was associated with screening but not with salt iodization. What's new? In recent decades, the incidence of thyroid cancer has increased rapidly worldwide. In China, the role of thyroid cancer screening as part of regular health checks and potential overdiagnosis remain unclear. Moreover, there are concerns among the general public that mandatory salt iodization may have contributed to the epidemic of thyroid cancer. Here, the authors found that the increase in thyroid cancer in China is associated with increased access to health care and screening, but not with salt iodization. Moreover, the results suggest that approximately 1000 individuals are overdiagnosed with thyroid cancer daily, calling for urgent measures to prevent overdiagnosis.
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Affiliation(s)
- Yihao Liu
- Clinical Trials Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Fenghua Lai
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jianyan Long
- Clinical Trials Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Sui Peng
- Clinical Trials Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Haibo Wang
- Clinical Trials Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Qian Zhou
- Clinical Trials Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Bin Li
- Clinical Trials Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Lei Su
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Lanxia Gan
- China Standard Medical Information Research Center, Shenzhen, China
| | - Ying Shi
- China Standard Medical Information Research Center, Shenzhen, China
| | - Weiming Lv
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yanbing Li
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Karkeung Cheng
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Haipeng Xiao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Liu Y, Li B, Zheng Q, Xu J, Li J, Lai F, Lin B, Peng S, Lv W, Xiao H. The Current Landscape of Clinical Studies Focusing on Thyroid Cancer: A Comprehensive Analysis of Study Characteristics and Their Publication Status. Front Endocrinol (Lausanne) 2020; 11:575799. [PMID: 33329384 PMCID: PMC7714929 DOI: 10.3389/fendo.2020.575799] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 10/21/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND A better understanding of the current characteristics of clinical trials on thyroid cancer (TC) is important to improve trial designs and identify neglected areas of research. However, there is a lack of a thorough understanding of the clinical studies on TC. Therefore, this study aimed to present a comprehensive overview of clinical trials on TC based on the ClinicalTrials.gov database and evaluate their publication status. METHODS We searched for TC-related clinical studies registered in the ClinicalTrials.gov database before December 2018 by using the keyword "thyroid cancer" and assessed the characteristics of the included trials. We searched the publication status of primary completed studies in PubMed and Google Scholar. RESULTS A total of 450 studies were identified for analysis, including 333 (74.0%) interventional studies and 117 (26.0%) observational studies. Interventional studies about TC were commonly non-randomized (67.6%), single-arm (55.6%), single-center (76.3%), and early-phase (60.0%) trials. The major category for which studies were performed was for target drug-related therapy (53.6%). In addition, 57.0% of the primary completed interventional studies were published. The published studies were more commonly primary completed studies after 2010 and used randomization and were less commonly designed as single-arm studies and were conducted in the USA/Canada, compared to non-published studies (P < 0.05 for all). The median time from primary completion to publication was 46.5 months, and the time decreased to 36.5 months after 2010. Studies conducted in the USA/Canada [odds ratio (OR) = 9.43, P = 0.020] and multi-center studies (OR = 6.55, P = 0.021) significantly increased the potential of publication in high-impact journals. CONCLUSIONS High-quality, randomized phase 3 trials regarding TC are still insufficient. Therefore, more efforts are needed to improve the treatment of poor prognostic TC and timely publication.
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Affiliation(s)
- Yihao Liu
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Bin Li
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Qiuyi Zheng
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jia Xu
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jie Li
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Fenghua Lai
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Bo Lin
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Sui Peng
- Clinical Trials Unit, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Weiming Lv
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- *Correspondence: Haipeng Xiao, ; Weiming Lv,
| | - Haipeng Xiao
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- *Correspondence: Haipeng Xiao, ; Weiming Lv,
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Schlich M, Lai F, Pireddu R, Pini E, Ailuno G, Fadda AM, Valenti D, Sinico C. Resveratrol proniosomes as a convenient nanoingredient for functional food. Food Chem 2019; 310:125950. [PMID: 31830712 DOI: 10.1016/j.foodchem.2019.125950] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 11/11/2019] [Accepted: 11/23/2019] [Indexed: 12/18/2022]
Abstract
Proniosomes are free-flowing powders composed of water-soluble carriers blended with surfactants, which form niosomes upon hydration. In this work, proniosomal formulations containing the natural antioxidant resveratrol (RSV) were prepared and fully characterized. A pre-formulation study on RSV-loaded niosomes was carried out to determine the most promising ratio between the two surfactants, Tween 20 and Span 60, in terms of entrapment efficiency and antioxidant activity. The optimized formulae were subsequently adapted to be prepared as proniosomes by the slurry method, including lactose or maltodextrin as carriers. The impact of surfactants and carriers properties on size, entrapment efficiency and release kinetics of proniosomes were evaluated. In vitro release of RSV in simulated gastric and intestinal media was determined, as well as the vesicular stability. Moreover, the biocompatibility of the formulations was determined on intestinal cells in vitro. Overall, the developed proniosomes provide promising nanoingredient for functional food, improving resveratrol stability and bioavailability.
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Affiliation(s)
- M Schlich
- Dipartimento di Scienze della Vita e dell'Ambiente, Sezione di Scienze del Farmaco, University of Cagliari, CNBS, Via Ospedale 72, 09124 Cagliari, Italy
| | - F Lai
- Dipartimento di Scienze della Vita e dell'Ambiente, Sezione di Scienze del Farmaco, University of Cagliari, CNBS, Via Ospedale 72, 09124 Cagliari, Italy.
| | - R Pireddu
- Dipartimento di Scienze della Vita e dell'Ambiente, Sezione di Scienze del Farmaco, University of Cagliari, CNBS, Via Ospedale 72, 09124 Cagliari, Italy
| | - E Pini
- DISMAB-Sezione di Chimica Organica ''A.Marchesini'', Università degli Studi di Milano, Milano, Italy
| | - Giorgia Ailuno
- Dipartimento di Farmacia (DIFAR), University of Genova, Genova 16148, Italy
| | - A M Fadda
- Dipartimento di Scienze della Vita e dell'Ambiente, Sezione di Scienze del Farmaco, University of Cagliari, CNBS, Via Ospedale 72, 09124 Cagliari, Italy
| | - D Valenti
- Dipartimento di Scienze della Vita e dell'Ambiente, Sezione di Scienze del Farmaco, University of Cagliari, CNBS, Via Ospedale 72, 09124 Cagliari, Italy
| | - C Sinico
- Dipartimento di Scienze della Vita e dell'Ambiente, Sezione di Scienze del Farmaco, University of Cagliari, CNBS, Via Ospedale 72, 09124 Cagliari, Italy
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Phan M, Krishnan R, El Sayes N, Mathieu J, Selman M, Macklin A, Dornan M, Groom H, Patten D, Davis C, Lai F, Lichty B, Harper M, Arulanandam R, Bell J, Alain T, Josephy D, Smith J, Boddy C, Diallo J. Viral sensitizers potential infection of cancer cells via NF-kappaB. Eur J Cancer 2019. [DOI: 10.1016/j.ejca.2019.01.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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28
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Ho TW, Wu JM, Yang CY, Tien YW, Lai F. Mortality, malignancy, and comorbidities associated with chronic pancreatitis: a Nationwide Database study in Taiwan. Int J Infect Dis 2019. [DOI: 10.1016/j.ijid.2018.11.283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Roman M, Monaghan A, Serraino GF, Miller D, Pathak S, Lai F, Zaccardi F, Ghanchi A, Khunti K, Davies MJ, Murphy GJ. Meta-analysis of the influence of lifestyle changes for preoperative weight loss on surgical outcomes. Br J Surg 2018; 106:181-189. [DOI: 10.1002/bjs.11001] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 07/16/2018] [Accepted: 08/21/2018] [Indexed: 12/18/2022]
Abstract
Abstract
Background
The aim was to investigate whether preoperative weight loss results in improved clinical outcomes in surgical patients with clinically significant obesity.
Methods
This was a systematic review and aggregate data meta-analysis of RCTs and cohort studies. PubMed, MEDLINE, Embase and CINAHL Plus databases were searched from inception to February 2018. Eligibility criteria were: studies assessing the effect of weight loss interventions (low-energy diets with or without an exercise component) on clinical outcomes in patients undergoing any surgical procedure. Data on 30-day or all-cause in-hospital mortality were extracted and synthesized in meta-analyses. Postoperative thromboembolic complications, duration of surgery, infection and duration of hospital stay were also assessed.
Results
A total of 6060 patients in four RCTs and 12 cohort studies, all from European and North American centres, were identified. Most were in the field of bariatric surgery and all had some methodological limitations. The pooled effect estimate suggested that preoperative weight loss programmes were effective, leading to significant weight reduction compared with controls: mean difference –7·42 (95 per cent c.i. –10·09 to –4·74) kg (P < 0·001). Preoperative weight loss interventions were not associated with a reduction in perioperative mortality (odds ratio 1·41, 95 per cent c.i. 0·24 to 8·40; I2 = 0 per cent, P = 0·66) but the event rate was low. The weight loss groups had shorter hospital stay (by 27 per cent). No differences were found for morbidity.
Conclusion
This limited preoperative weight loss has advantages but may not alter the postoperative morbidity or mortality risk.
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Affiliation(s)
- M Roman
- Department of Cardiovascular Sciences and National Institute for Health Research Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Glenfield Hospital, Leicester, UK
| | - A Monaghan
- Department of Cardiovascular Sciences and National Institute for Health Research Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Glenfield Hospital, Leicester, UK
| | - G F Serraino
- Department of Cardiovascular Sciences and National Institute for Health Research Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Glenfield Hospital, Leicester, UK
| | - D Miller
- Department of Cardiovascular Sciences and National Institute for Health Research Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Glenfield Hospital, Leicester, UK
| | - S Pathak
- Department of Cardiovascular Sciences and National Institute for Health Research Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Glenfield Hospital, Leicester, UK
| | - F Lai
- Department of Cardiovascular Sciences and National Institute for Health Research Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Glenfield Hospital, Leicester, UK
| | - F Zaccardi
- Diabetes Research Centre, University of Leicester, Leicester General Hospital, Leicester, UK
| | - A Ghanchi
- Department of Cardiovascular Sciences and National Institute for Health Research Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Glenfield Hospital, Leicester, UK
| | - K Khunti
- Diabetes Research Centre, University of Leicester, Leicester General Hospital, Leicester, UK
| | - M J Davies
- Diabetes Research Centre, University of Leicester, Leicester General Hospital, Leicester, UK
| | - G J Murphy
- Department of Cardiovascular Sciences and National Institute for Health Research Leicester Biomedical Research Unit in Cardiovascular Medicine, University of Leicester, Glenfield Hospital, Leicester, UK
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Fu J, Lai F, Chen Y, Wan X, Wei G, Li Y, Xiao H, Cao X. A novel splice site mutation of the PRKAR1A gene, C.440+5 G>C, in a Chinese family with Carney complex. J Endocrinol Invest 2018; 41:909-917. [PMID: 29318463 DOI: 10.1007/s40618-017-0817-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 12/24/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND Carney complex (CNC) is an extremely rare, multiple endocrine neoplasia syndrome that occurs in an autosomal dominant manner. Mutations in PRKAR1A have been reported to be a common genetic cause of CNC. METHODS In this study, we reported a Chinese pedigree of CNC that manifests mainly as spotty skin pigmentation and primary pigmented nodular adrenocortical disease. Whole blood samples of this pedigree were collected for DNA/RNA analysis. Polymerase chain reaction (PCR) and reverse-transcription polymerase chain reaction analyses were performed to amplify the 11 exons and adjacent introns of PRKAR1A. Direct sequencing was used to detect the mutation, and DNA from 70 Han Chinese people was extracted and sequenced as a control to estimate the frequency of the identified mutation. RESULTS Within the pedigree, ten patients with CNC were identified, and a novel heterozygous mutation (c.440+5 G>C in intron 4a) was identified in the PRKAR1A gene. PCR amplification of cDNA from the control subjects and patients was performed. Agarose gel electrophoresis showed only one wild-type band in the cDNA corresponding to the former group, whereas an extra band was present in samples from the latter group corresponding to the skipping of exon 4a; this confirms that the variant affects PRKAR1A splicing. CONCLUSION In conclusion, the c.440+5 G>C mutation is a new splice site mutation that has not been reported and has the potential to broaden the mutational spectrum of PRKAR1A that is associated with CNC, which would facilitate genetic diagnosis and counseling for CNC.
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Affiliation(s)
- J Fu
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China
| | - F Lai
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China
| | - Y Chen
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China
| | - X Wan
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China
| | - G Wei
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China
| | - Y Li
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China
| | - H Xiao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China
| | - X Cao
- Department of Endocrinology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, Guangdong, China.
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Affiliation(s)
- W Huang
- Department of Computer Science and Information Engineering, National Taiwan University, Taipei, TAIWAN
| | - P Lee
- Center of Sleep Disorder, National Taiwan University Hospital, Taipei, TAIWAN
| | - Y Liu
- MediaTek Inc., Hsinchu, TAIWAN
| | - F Lai
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, TAIWAN
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Lai F, Chen Y, Lin H, Wang X, Zhu X, Li Y, Xiao H, Cao X. Pancreatic-derived factor impaired glucagon-like Peptide-1 production from GLUTag enterendorine L-cell line and intestines. Mol Cell Endocrinol 2017; 452:110-119. [PMID: 28549991 DOI: 10.1016/j.mce.2017.05.021] [Citation(s) in RCA: 5] [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: 01/10/2017] [Revised: 05/20/2017] [Accepted: 05/21/2017] [Indexed: 12/18/2022]
Abstract
PURPOSE Pancreatic-derived factor (PANDER) is a pancreatic islet-specific cytokine that co-secretes with insulin. However, its biological function remains largely unknown. We have recently shown that the intestine might be its novel target tissue. The aim of this study was to clarify whether PANDER impacts the production of glucagon-like peptide-1 (GLP-1). METHODS We treated GLUTag cells from the mouse intestine L cell line with recombinant PANDER protein and hepatic overexpression of PANDER in an obese murine model. RESULTS In GLUTag cells, PANDER exposure led to decreased proglucagon gene mRNA expression and GLP-1 secretion without affecting cell viability or caspase-3 activation. Overexpression of PANDER in mice induced glucose intolerance and impaired glucose-stimulated GLP-1 secretion Moreover, PANDER blocked insulin-induced GLP-1 secretion by inhibiting the insulin signalling-Wnt pathway and directly inhibited the cAMP/PKA pathway. CONCLUSIONS Our findings indicate that intestinal L cells are responsive to PANDER, and elevated PANDER levels impair GLP-1 production in vitro and in vivo.
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Affiliation(s)
- Fenghua Lai
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, People's Republic of China
| | - Yan Chen
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, People's Republic of China
| | - Huimei Lin
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, People's Republic of China
| | - Xuelan Wang
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan 2nd Rd., Guangzhou, 510080, People's Republic of China
| | - Xiaonan Zhu
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, 74 Zhongshan 2nd Rd., Guangzhou, 510080, People's Republic of China
| | - Yanbing Li
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, People's Republic of China
| | - Haipeng Xiao
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, People's Republic of China
| | - Xiaopei Cao
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, People's Republic of China.
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Boggian G, Sacca S, Serafini F, Vandelli R, Parlangeli R, Lai F. P995Short time antibiotic prophylaxis positively affects infection rates after CIED Implantation. Europace 2017. [DOI: 10.1093/ehjci/eux151.176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Fanni D, Angotzi F, Lai F, Gerosa C, Senes G, Fanos V, Faa G. Four stages of hepatic hematopoiesis in human embryos and fetuses. J Matern Fetal Neonatal Med 2017; 31:701-707. [DOI: 10.1080/14767058.2017.1297400] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- D. Fanni
- Department of Surgical Sciences, Division of Pathology, University of Cagliari, Cagliari, Italy
| | - F. Angotzi
- Department of Surgical Sciences, Division of Pathology, University of Cagliari, Cagliari, Italy
| | - F. Lai
- Department of Surgical Sciences, Division of Pathology, University of Cagliari, Cagliari, Italy
| | - C. Gerosa
- Department of Surgical Sciences, Division of Pathology, University of Cagliari, Cagliari, Italy
| | - G. Senes
- Department of Surgical Sciences, Division of Pathology, University of Cagliari, Cagliari, Italy
| | - V. Fanos
- Neonatal Intensive Care Unit, Neonatal Pathology, Puericulture Institute and Neonatal Section, University of Cagliari, Cagliari, Italy
| | - G. Faa
- Department of Surgical Sciences, Division of Pathology, University of Cagliari, Cagliari, Italy
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Cheng G, Liu F, Asai T, Lai F, Man N, Xu H, Chen S, Greenblatt S, Hamard PJ, Ando K, Chen X, Wang L, Martinez C, Tadi M, Wang L, Xu M, Yang FC, Shiekhattar R, Nimer SD. Loss of p300 accelerates MDS-associated leukemogenesis. Leukemia 2016; 31:1382-1390. [PMID: 27881875 DOI: 10.1038/leu.2016.347] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 10/14/2016] [Accepted: 10/21/2016] [Indexed: 12/19/2022]
Abstract
The role that changes in DNA methylation and histone modifications have in human malignancies is poorly understood. p300 and CREB-binding protein (CBP), two distinct but highly homologous lysine acetyltransferases, are mutated in several cancers, suggesting their role as tumor suppressors. In the current study, we found that deletion of p300, but not CBP, markedly accelerated the leukemogenesis ofNup98-HoxD13 (NHD13) transgenic mice, an animal model that phenotypically copies human myelodysplastic syndrome (MDS). p300 deletion restored the ability of NHD13 expressing hematopoietic stem and progenitor cells (HSPCs) to self-renew in vitro, and to expand in vivo, with an increase in stem cell symmetric self-renewal divisions and a decrease in apoptosis. Furthermore, loss of p300, but not CBP, promoted cytokine signaling, including enhanced activation of the MAPK and JAK/STAT pathways in the HSPC compartment. Altogether, our data indicate that p300 has a pivotal role in blocking the transformation of MDS to acute myeloid leukemia, a role distinct from that of CBP.
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Affiliation(s)
- G Cheng
- Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA
| | - F Liu
- Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA
| | - T Asai
- Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA
| | - F Lai
- Department of Human Genetics, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - N Man
- Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA
| | - H Xu
- Department of Medicine, Cancer Biology and Genetics Program, Memorial Sloan-Kettering Cancer Center, New York,NY,USA
| | - S Chen
- Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA
| | - S Greenblatt
- Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA
| | - P-J Hamard
- Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA
| | - K Ando
- Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA
| | - X Chen
- Department of Public Health Sciences, Division of Biostatistics, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - L Wang
- Department of Public Health Sciences, Division of Biostatistics, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - C Martinez
- Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA
| | - M Tadi
- Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA
| | - L Wang
- Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA
| | - M Xu
- Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA
| | - F-C Yang
- Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA
| | - R Shiekhattar
- Department of Human Genetics, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - S D Nimer
- Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA.,Department of Medicine, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL,USA
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Fanni D, Manchia M, Lai F, Gerosa C, Ambu R, Faa G. Immunohistochemical markers of CYP3A4 and CYP3A7: a new tool towards personalized pharmacotherapy of hepatocellular carcinoma. Eur J Histochem 2016; 60:2614. [PMID: 27349315 PMCID: PMC4933826 DOI: 10.4081/ejh.2016.2614] [Citation(s) in RCA: 13] [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: 12/21/2015] [Revised: 02/26/2016] [Accepted: 02/26/2016] [Indexed: 12/21/2022] Open
Abstract
Hepatocellular carcinoma (HCC) represents a major global health problem, since more than 90% of primary liver cancers worldwide are HCC. Most cases of HCC are secondary to viral hepatitis infection (hepatitis B or C), alcoholism and cirrhosis. Sorafenib, an oral tyrosine kinase inhibitor that suppresses tumor proliferation and angiogenesis, emerged as the first effective systemic treatment for HCC after 30 years of research, and is currently the standard-of-care for patients with advanced HCC. Sorafenib is metabolized by cytochrome P450 (CYP450), particularly from the 3A4 isoform, producing two main metabolites: the N-oxide and the N-hydroxymethyl metabolite. We studied 11 HCC sample showing the presence of CYP3A4 and CYP3A7 in most of the samples analysed. Specifically, the immunoreactivity of CYP3A4 was stronger and more widespread than that of CYP3A7. The CYP3A4 immunoreactivity was observed in surrounding hepatocytes in 8 out of 11 cases; while the CYP3A7 immunostaining was found in normal liver cells, in 7 out of 11 cases. These results suggest the existence of a marked inter-individual variability regarding the presence of the isoforms of CYP3A. In addition, since sorafenib is metabolized by CYP3A4, but not by CYP3A7, an overexpression of CYP3A4 may lead to an increase in the degradation of the drug and then to clinical ineffectiveness. These results might implicate the necessity of an individualized approach in the treatment of HCC as positivity to CYP3A4 in HCC liver samples might predict a scarce response to sorafenib.
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Barbour SJ, Espino-Hernandez G, Reich HN, Coppo R, Roberts IS, Feehally J, Herzenberg AM, Cattran DC, Bavbek N, Cook T, Troyanov S, Alpers C, Amore A, Barratt J, Berthoux F, Bonsib S, Bruijn J, D’Agati V, D’Amico G, Emancipator S, Emmal F, Ferrario F, Fervenza F, Florquin S, Fogo A, Geddes C, Groene H, Haas M, Hill P, Hogg R, Hsu S, Hunley T, Hladunewich M, Jennette C, Joh K, Julian B, Kawamura T, Lai F, Leung C, Li L, Li P, Liu Z, Massat A, Mackinnon B, Mezzano S, Schena F, Tomino Y, Walker P, Wang H, Weening J, Yoshikawa N, Zhang H, Coppo R, Troyanov S, Cattran D, Cook H, Feehally J, Roberts I, Tesar V, Maixnerova D, Lundberg S, Gesualdo L, Emma F, Fuiano L, Beltrame G, Rollino C, RC, Amore A, Camilla R, Peruzzi L, Praga M, Feriozzi S, Polci R, Segoloni G, Colla L, Pani A, Angioi A, Piras L, JF, Cancarini G, Ravera S, Durlik M, Moggia E, Ballarin J, Di Giulio S, Pugliese F, Serriello I, Caliskan Y, Sever M, Kilicaslan I, Locatelli F, Del Vecchio L, Wetzels J, Peters H, Berg U, Carvalho F, da Costa Ferreira A, Maggio M, Wiecek A, Ots-Rosenberg M, Magistroni R, Topaloglu R, Bilginer Y, D’Amico M, Stangou M, Giacchino F, Goumenos D, Kalliakmani P, Gerolymos M, Galesic K, Geddes C, Siamopoulos K, Balafa O, Galliani M, Stratta P, Quaglia M, Bergia R, Cravero R, Salvadori M, Cirami L, Fellstrom B, Kloster Smerud H, Ferrario F, Stellato T, Egido J, Martin C, Floege J, Eitner F, Lupo A, Bernich P, Menè P, Morosetti M, van Kooten C, Rabelink T, Reinders M, Boria Grinyo J, Cusinato S, Benozzi L, Savoldi S, Licata C, Mizerska-Wasiak M, Martina G, Messuerotti A, Dal Canton A, Esposito C, Migotto C, Triolo G, Mariano F, Pozzi C, Boero R, Bellur S, Mazzucco G, Giannakakis C, Honsova E, Sundelin B, Di Palma A, Ferrario F, Gutiérrez E, Asunis A, Barratt J, Tardanico R, Perkowska-Ptasinska A, Arce Terroba J, Fortunato M, Pantzaki A, Ozluk Y, Steenbergen E, Soderberg M, Riispere Z, Furci L, Orhan D, Kipgen D, Casartelli D, Galesic Ljubanovic D, Gakiopoulou H, Bertoni E, Cannata Ortiz P, Karkoszka H, Groene H, Stoppacciaro A, Bajema I, Bruijn J, Fulladosa Oliveras X, Maldyk J, Ioachim E. The MEST score provides earlier risk prediction in lgA nephropathy. Kidney Int 2016; 89:167-75. [DOI: 10.1038/ki.2015.322] [Citation(s) in RCA: 150] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 08/17/2015] [Accepted: 09/03/2015] [Indexed: 01/12/2023]
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Cao X, Yang C, Lai F, Hong Z, Lin H, Liu J, Li Y. Elevated circulating level of a cytokine, pancreatic-derived factor, is associated with metabolic syndrome components in a Chinese population. J Diabetes Investig 2015; 7:581-6. [PMID: 27181109 PMCID: PMC4931209 DOI: 10.1111/jdi.12437] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 09/14/2015] [Accepted: 10/01/2015] [Indexed: 01/10/2023] Open
Abstract
Aims/Introduction Pancreatic‐derived factor (PANDER) is an important factor involved in obesity, glucose intolerance and abnormal lipid metabolism in animals. Nevertheless, the relationship between PANDER and metabolic syndrome (MetS) in humans has not yet been reported. Materials and Methods To determinate the relationship between PANDER and MetS components, 212 individuals aged between 40 and 65 years were recruited. Fasting plasma PANDER and other variables were measured. Correlations of plasma PANDER and other variables were carried out. Plasma PANDER level was compared in participants with no metabolic components and those with any metabolic components, as well as in normal glucose tolerance, impaired glucose tolerance and diabetes mellitus participants. Results In all the participants, there were 65 participants in the no metabolic components group and 147 participants in the any metabolic components group. Plasma PANDER level was increased with the number of MetS components (P < 0.05) and correlated with metabolic score (r = 0. 529, P < 0.001). In addition, plasma PANDER significantly correlated with fasting plasma glucose (r = 0.187, P = 0.046), 2‐h plasma glucose (r = 0.195, P = 0.035), homeostasis model assessment of β‐cell function (r = −0.191, P = 0.039), triglyceride (r = 0.305, P = 0.001) and high‐density lipoprotein cholesterol (r = −0.333, P < 0.001). Using multivariable logistic regression analysis, circulating PANDER was associated with an increased risk ratio of impaired glucose tolerance or diabetes mellitus (odds ratio 2.22, 95% confidence interval 1.15–4.42, P = 0.018) after adjustment of the other possible confounders. Conclusions Circulating level of PANDER in relation to the accumulation in MetS suggested that persons with elevated levels of PANDER were associated with an increased risk of metabolic syndrome.
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Affiliation(s)
- Xiaopei Cao
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Chijiao Yang
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Fenghua Lai
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhenzhen Hong
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Huimei Lin
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Juan Liu
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yanbing Li
- Department of Endocrinology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Guo ST, Chi MN, Yang RH, Guo XY, Zan LK, Wang CY, Xi YF, Jin L, Croft A, Tseng HY, Yan XG, Farrelly M, Wang FH, Lai F, Wang JF, Li YP, Ackland S, Scott R, Agoulnik IU, Hondermarck H, Thorne RF, Liu T, Zhang XD, Jiang CC. INPP4B is an oncogenic regulator in human colon cancer. Oncogene 2015; 35:3049-61. [PMID: 26411369 PMCID: PMC4908438 DOI: 10.1038/onc.2015.361] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [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: 05/20/2015] [Revised: 07/30/2015] [Accepted: 08/24/2015] [Indexed: 12/11/2022]
Abstract
Inositol polyphosphate 4-phosphatase type II (INPP4B) negatively regulates phosphatidylinositol 3-kinase signaling and is a tumor suppressor in some types of cancers. However, we have found that it is frequently upregulated in human colon cancer cells. Here we show that silencing of INPP4B blocks activation of Akt and serum- and glucocorticoid-regulated kinase 3 (SGK3), inhibits colon cancer cell proliferation and retards colon cancer xenograft growth. Conversely, overexpression of INPP4B increases proliferation and triggers anchorage-independent growth of normal colon epithelial cells. Moreover, we demonstrate that the effect of INPP4B on Akt and SGK3 is associated with inactivation of phosphate and tensin homolog through its protein phosphatase activity and that the increase in INPP4B is due to Ets-1-mediated transcriptional upregulation in colon cancer cells. Collectively, these results suggest that INPP4B may function as an oncogenic driver in colon cancer, with potential implications for targeting INPP4B as a novel approach to treat this disease.
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Affiliation(s)
- S T Guo
- Department of Molecular Biology, Shanxi Cancer Hospital and Institute, Affiliated Hospital of Shanxi Medical University, Shanxi, China
| | - M N Chi
- School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia
| | - R H Yang
- Department of Molecular Biology, Shanxi Cancer Hospital and Institute, Affiliated Hospital of Shanxi Medical University, Shanxi, China
| | - X Y Guo
- Department of Molecular Biology, Shanxi Cancer Hospital and Institute, Affiliated Hospital of Shanxi Medical University, Shanxi, China
| | - L K Zan
- Department of Pathology, Shanxi Cancer Hospital and Institute, Shanxi, China
| | - C Y Wang
- Department of Molecular Biology, Shanxi Cancer Hospital and Institute, Affiliated Hospital of Shanxi Medical University, Shanxi, China
| | - Y F Xi
- Department of Pathology, Shanxi Cancer Hospital and Institute, Shanxi, China
| | - L Jin
- School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia
| | - A Croft
- Department of Medical Oncology, Calvary Mater Newcastle Hospital, Newcastle, New South Wales, Australia
| | - H-Y Tseng
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia
| | - X G Yan
- School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia
| | - M Farrelly
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia
| | - F H Wang
- Department of Molecular Biology, Shanxi Cancer Hospital and Institute, Affiliated Hospital of Shanxi Medical University, Shanxi, China
| | - F Lai
- School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia
| | - J F Wang
- Department of Pathology, Shanxi Cancer Hospital and Institute, Shanxi, China
| | - Y P Li
- Department of Colorectal Surgery, Shanxi Cancer Hospital and Institute, Shanxi, China
| | - S Ackland
- Department of Medical Oncology, Calvary Mater Newcastle Hospital, Newcastle, New South Wales, Australia
| | - R Scott
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia
| | - I U Agoulnik
- Department of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine, Miami, FL, USA
| | - H Hondermarck
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia
| | - R F Thorne
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia
| | - T Liu
- Children's Cancer Institute Australia for Medical Research, University of New South Wales, Sydney, New South Wales, Australia
| | - X D Zhang
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia
| | - C C Jiang
- School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia
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Chi M, Chen J, Ye Y, Tseng HY, Lai F, Tay KH, Jin L, Guo ST, Jiang CC, Zhang XD. Adipocytes contribute to resistance of human melanoma cells to chemotherapy and targeted therapy. Curr Med Chem 2014; 21:1255-67. [PMID: 24304284 DOI: 10.2174/0929867321666131129114742] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2013] [Revised: 11/08/2013] [Accepted: 11/25/2013] [Indexed: 11/22/2022]
Abstract
Epidemiological evidence has linked the development and progression of several cancers including melanoma with obesity. However, whether obesity impinges on responses of cancer cells to treatment remains less understood. Here we report that human adipocytes contribute to resistance of melanoma cells to various therapeutic agents. Exposure to media from adipocyte cultures (adipocyte media) increased cell proliferation and reduced sensitivity of melanoma cells to apoptosis induced by diverse chemotherapeutic drugs, including the DNA-damaging drug cisplatin, the microtubuletargeting agent docetaxel, and the histone deacetylase inhibitor SAHA. This was associated with increased activation of PI3K/Akt and MEK/ERK signaling, and was attenuated by a PI3K or MEK inhibitor. The effect of adipocyte media on melanoma cells was, at least in part, due to the interaction between the adipokine leptin and its long form receptor OB-Rb, in that immunodepletion of leptin in adipocyte media or siRNA knockdown of OB-Rb in melanoma cells reversed the increase in Akt and ERK activation, enhancement in cell proliferation, and importantly, protection of melanoma cells against the drugs. In support, recombinant leptin partially recapitulated the effect of adipocyte media on melanoma cells. Of note, OB-Rb was increased on the surface of melanoma cells compared to melanocytes, whereas leptin short form receptors appeared to be suppressed post-transcriptionally, suggesting that OB-Rb was selectively upregulated in melanoma cells. Collectively, these results indicate that adipocytes contribute to the resistance of melanoma cells to chemotherapeutic drugs and agents targeting the PI3K/Akt and MEK/ERK pathways, and suggest that inhibition of the leptin/ OB-Rb system may be useful to improve the efficacy of multiple therapeutic approaches in the treatment of melanoma.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - X D Zhang
- LS3-49, Life Science Building, University of Newcastle, Callaghan, NSW, Australia.
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Lai F, Pini E, Angioni G, Manca ML, Perricci J, Sinico C, Fadda AM. Nanocrystals as tool to improve piroxicam dissolution rate in novel orally disintegrating tablets. Eur J Pharm Biopharm 2011; 79:552-8. [PMID: 21820052 DOI: 10.1016/j.ejpb.2011.07.005] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2011] [Revised: 07/15/2011] [Accepted: 07/18/2011] [Indexed: 11/17/2022]
Abstract
In this paper, orally disintegrating tablets (ODT) were prepared using nanocrystal formulations in order to optimise dissolution properties of lipophilic, poorly soluble drug piroxicam (PRX). Different nanocrystal formulations were prepared using a high pressure homogenisation technique and poloxamer 188 as stabiliser. Characterisation of PRX nanocrystal ODT was carried out by infrared spectroscopy (FTIR), X-ray powder diffractometry (XRPD), differential scanning calorimetry and photon correlation spectroscopy. Dissolution study of PRX ODT was performed in distilled water (pH 5.5) and was compared to that of PRX coarse suspension ODT, PRX/poloxamer 188 physical mixture and bulk PRX samples. The XRPD and FTIR studies demonstrated that the homogenisation process led to a polymorphic transition from form I (bulk commercial PRX) to form III and monohydrate form of the nanocrystals. All ODT formulations prepared using PRX nanosuspensions showed a higher PRX dissolution rate compared with the ODT prepared with the coarse PRX. Since the solubility of the different PRX polymorphic forms increased only slightly from bulk PRX (form I) to monohydrate, form II and form III, we can conclude that the improvement in PRX dissolution rate is mainly caused by the increased surface-to-volume ratio due to the submicron dimension of the drug particles.
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Affiliation(s)
- F Lai
- Dipartimento Farmaco Chimico Tecnologico, Università degli Studi di Cagliari, Cagliari, Italy
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Xu Y, Liu Q, Zhao P, Li N, Lai F, Xu Y, He X, Jiang W, Hong B, Si S. 715 FORMONONETIN, A CLA1 UPREGULATOR, REDUCES ATHEROSCLEROTIC LESION FORMATION IN APOE−/− MICE. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70716-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Khojasteh SC, Leipold DD, Lai F, La H, Baumgardner MJ, Desino KE, Gudmundsson OS, Bloedow DC, Bodary SC, Reynolds ME, Gadek TR, Kenkare-Mitra S. Preclinical absorption, distribution, metabolism and excretion (ADME) characterization of ICAM1988, an LFA-1/ICAM antagonist, and its prodrug. Xenobiotica 2008; 38:340-52. [DOI: 10.1080/00498250701813248] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kwan TL, Lai F, Lam CM, Yuen WC, Wai A, Siu YC, Shung E, Law WL. Population-Based Information on Emergency Colorectal Surgery and Evaluation on Effect of Operative Volume on Mortality. World J Surg 2008; 32:2077-82. [DOI: 10.1007/s00268-008-9632-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Shen VL, Lai F. Requirements specification and analysis of digital systems using fuzzy and marked Petri nets. IEEE Trans Syst Man Cybern B Cybern 2008; 28:748-54. [PMID: 18255994 DOI: 10.1109/3477.718525] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Fuzzy information often appears in the system requirements. Fuzzy Petri nets (FPN) are Petri nets in which certain fuzzy truth values are assigned to its transitions. We show how the FPN model can be used for formal specification and verification of digital systems. The consistent FPN model is actually a state machine, from which we can obtain a consistent marked Petri net (MPN) model. Based on the consistent MPN model, the hardware prototype at register transfer level can be easily induced by using the optimization rules. Finally, main results are presented in the form of three theorems and are supported by some experiments.
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Affiliation(s)
- V L Shen
- Dept. of Electr. Eng., Mingchi Inst. of Technol., Taipei
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Lai F, Kwan TL, Yuen WC, Wai A, Siu YC, Shung E. Evaluation of various POSSUM models for predicting mortality in patients undergoing elective oesophagectomy for carcinoma. Br J Surg 2007; 94:1172-8. [PMID: 17520711 DOI: 10.1002/bjs.5793] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Background
The aim of the study was to validate the use of the Physiological and Operative Severity Score for the enUmeration of Mortality and morbidity (POSSUM), Portsmouth (P) POSSUM and upper gastrointestinal (O) POSSUM models in patients undergoing elective thoracic oesophagectomy for carcinoma.
Methods
The observed in-hospital mortality rates in 545 patients undergoing elective thoracic oesophagectomy for squamous cell carcinoma of the oesophagus in all public hospitals in Hong Kong was compared with rates predicted by POSSUM, P-POSSUM and O-POSSUM. The discriminatory power of these models was assessed using receiver–operator characteristic (ROC) curve analysis.
Results
The observed mortality rate was 5·5 per cent, whereas rates predicted by POSSUM, P-POSSUM and O-POSSUM were 15·0, 4·7 and 10·9 per cent respectively. P-POSSUM showed no lack of fit (P = 0·814), but POSSUM (P < 0·001) and O-POSSUM (P = 0·002) showed lack of fit against observed mortality. POSSUM overpredicted mortality across nearly all risk groups, whereas O-POSSUM overpredicted mortality in patients with low physiological scores and in older patients. POSSUM (area under ROC curve 0·776) and P-POSSUM (0·776) showed equally good discriminatory power but O-POSSUM (0·676) was inferior.
Conclusion
P-POSSUM provided the most accurate prediction of in-hospital mortality in this group of patients who had elective oesophagectomy.
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Affiliation(s)
- F Lai
- Statistics and Research Unit, Head Office, Hong Kong, China
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Lin BS, Lin BS, Chong FC, Lai F. Adaptive filtering of evoked potentials using higher-order adaptive signal enhancer with genetic-type variable step-size prefilter. Med Biol Eng Comput 2006; 43:638-47. [PMID: 16411637 DOI: 10.1007/bf02351038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An adaptive signal enhancer based on third-order statistics with a genetic-type, variable step-size prefilter is introduced to recover evoked potentials (EPs). EPs are usually embedded in the ongoing electroencephalogram with a very low signal-to-noise ratio (SNR). As a higher-order statistics technique has a natural tolerance to Gaussian noise, it is applicable for filtering EPs. An adaptive signal enhancer based on third-order statistics was used as the major filter in this study. However, the efficiency of the adaptive signal enhancer was reduced when the total power of uncorrelated noises was large. To improve the performance for EPs under poor SNR, a low-noise signal is required. Therefore a prefilter with a genetic-type, variable step-size algorithm was employed to enhance the SNR of the signal in this study. The fundamental idea of a genetic-type, variable step-size algorithm is that its step-sizes are regularly readjusted to optimum. Therefore this algorithm can be used as a prefilter with different noise levels. Experimental results showed that, for filtering EPs, the proposed scheme is superior to the adaptive signal enhancer with a normalised least mean square algorithm.
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Affiliation(s)
- B-S Lin
- Institute of Electrical Engineering, National Taiwan University, Taipei, Taiwan.
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Sinico C, Valenti D, Manconi M, Lai F, Fadda A. Cutaneous delivery of 8-methoxypsoralen from liposomal and niosomal carriers. J Drug Deliv Sci Technol 2006. [DOI: 10.1016/s1773-2247(06)50017-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yablon S, Naumann M, Daggett S, Lai F, Brin M. The development of toxin neutralising antibodies with botulinum toxin type A (BoNTA) treatment. Akt Neurol 2005. [DOI: 10.1055/s-2005-919410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Hoheisel G, Sack U, Hui DSC, Lai F, Chan KS, Choi CH, Schauer J, Tannapfel A. [Immunohistochemical localization of matrix metalloproteinases (MMP) and tissue inhibitors of metalloproteinases (TIMP) in tuberculous pleuritis]. Pneumologie 2004; 58:305-8. [PMID: 15162254 DOI: 10.1055/s-2004-818452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Matrix metalloproteinases (MMP) and tissue inhibitors of metalloproteinases (TIMP) have been found by ELISA and gelatine zymography in different concentrations in pleural fluid in tuberculous (TB) pleuritis. For further differentiation MMP and TIMP were localized in pleural biopsies by immunhistochemical staining with antibodies directed against MMP-1, MMP-2, MMP-3, MMP-9, TIMP-1, and TIMP-2 using the Labelled-Avidin-Biotin (LAB). Immunohistological reactivity of MMP-1 was found in epitheloidcellular histiocytes, Langhans' giant cells, lymphocytes, macrophages, as well as in fibroblasts of granulomatous reactions. MMP-2 was found in a few epitheloid cellular histiocytes, fibroblasts, and inflammatory cells. MMP-3 was weakly positive in a few lymphocytes only. MMP-9 was found in a few fibroblasts, epitheloid cells, and inflammatory cells, foremost, however, in pleural mesothial cells. A few fibroblasts only showed immunoreactivity of TIMP-1 and TIMP-2. The observed inhomogenous staining pattern could be explained by the different state of activation of individual cellular units. In conclusion, the immunohistochemical demonstration of MMP and TIMP in pleural cells and tissue structures indicates their local involvement in fibrosing reactions in TB-pleuritis.
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Affiliation(s)
- G Hoheisel
- Abt. Pneumologie, Med. Klinik und Poliklinik I.
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