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Chang JYC, Woo CSL, Chow WS, White A, Wong KC, Tsui P, Lee ACH, Leung EKH, Woo YC, Tan KCB, Lam KSL, Lee CH, Lui DTW. Cushing's syndrome caused by ACTH precursors secreted from a pancreatic yolk sac tumor in an adult-a case report and literature review. Front Med (Lausanne) 2023; 10:1246796. [PMID: 38116038 PMCID: PMC10728467 DOI: 10.3389/fmed.2023.1246796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 11/20/2023] [Indexed: 12/21/2023] Open
Abstract
Here, we report the first adult case of pancreatic yolk sac tumor with ectopic adrenocorticotropic hormone (ACTH) syndrome. The patient was a 27-year-old woman presenting with abdominal distension, Cushingoid features, and hyperpigmentation. Endogenous Cushing's syndrome was biochemically confirmed. The ACTH level was in the normal range, which raised the suspicion of ACTH precursor-dependent disease. Elevated ACTH precursors were detected, supporting the diagnosis of ectopic ACTH syndrome. Functional imaging followed by tissue sampling revealed a pancreatic yolk sac tumor. The final diagnosis was Cushing's syndrome due to a yolk sac tumor. The patient received a steroidogenesis inhibitor and subsequent bilateral adrenalectomy for control of hypercortisolism. Her yolk sac tumor was treated with chemotherapy and targeted therapy. Cushing's syndrome secondary to a yolk sac tumor is extremely rare. This case illustrated the utility of ACTH precursor measurement in confirming an ACTH-related pathology and distinguishing an ectopic from a pituitary source for Cushing's syndrome.
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Affiliation(s)
- Johnny Yau Cheung Chang
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Chariene Shao Lin Woo
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Wing Sun Chow
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Anne White
- School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Ka Chung Wong
- Department of Pathology, Queen Mary Hospital, Pokfulam, Hong Kong SAR, China
| | - Po Tsui
- Department of Pathology, Queen Mary Hospital, Pokfulam, Hong Kong SAR, China
| | - Alan Chun Hong Lee
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Eunice Ka Hong Leung
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Yu Cho Woo
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Kathryn Choon Beng Tan
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Karen Siu Ling Lam
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Chi Ho Lee
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - David Tak Wai Lui
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
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Cheung TT, Lee YT, Tang RSY, She WH, Cheng KC, Cheung CC, Chiu KWH, Chok KSH, Chow WS, Lai TW, Seto WK, Yau T. The Hong Kong consensus recommendations on the diagnosis and management of pancreatic cystic lesions. Hepatobiliary Surg Nutr 2023; 12:715-735. [PMID: 37886207 PMCID: PMC10598309 DOI: 10.21037/hbsn-22-471] [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: 10/07/2022] [Accepted: 02/10/2023] [Indexed: 10/28/2023]
Abstract
Background The finding of pancreatic cystic lesions (PCL) on incidental imaging is becoming increasingly common. International studies report a prevalence of 2.2-44.7% depending on the population, imaging modality and indication for imaging, and the prevalence increases with age. Patients with PCL are at risk of developing pancreatic cancer, a disease with a poor prognosis. This publication summarizes recommendations for the diagnosis and management of PCL and post-operative pancreatic exocrine insufficiency (PEI) from a group of local specialists. Methods Clinical evidence was consolidated from narrative reviews and consensus statements formulated during two online meetings in March 2022. The expert panel included gastroenterologists, hepatobiliary surgeons, oncologists, radiologists, and endocrinologists. Results Patients with PCL require careful investigation and follow-up due to the risk of malignant transformation of these lesions. They should undergo clinical investigation and pancreas-specific imaging to classify lesions and understand the risk profile of the patient. Where indicated, patients should undergo pancreatectomy to excise PCL. Following pancreatectomy, patients are at risk of PEI, leading to gastrointestinal dysfunction and malnutrition. Therefore, such patients should be monitored for symptoms of PEI, and promptly treated with pancreatic enzyme replacement therapy (PERT). Patients with poor response to PERT may require increases in dose, addition of a proton pump inhibitor, and/or further investigation, including tests for pancreatic function. Patients are also at risk of new-onset diabetes mellitus after pancreatectomy; they should be screened and treated with insulin if indicated. Conclusions These statements are an accurate summary of our approach to the diagnosis and management of patients with PCL and will be of assistance to clinicians treating these patients in a similar clinical landscape.
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Affiliation(s)
- Tan-To Cheung
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Yuk Tong Lee
- Gastroenterologist in private practice, Hong Kong, China
| | - Raymond Shing-Yan Tang
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Wong Hoi She
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Kai Chi Cheng
- Department of Surgery, Kwong Wah Hospital, Hong Kong, China
| | | | - Keith Wan Hang Chiu
- Department of Radiology & Imaging, Queen Elizabeth Hospital, Hong Kong, China
| | - Kenneth Siu Ho Chok
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Wing Sun Chow
- Department of Medicine, The University of Hong Kong, Hong Kong, China
| | - Tak Wing Lai
- Department of Surgery, Princess Margaret Hospital, Hong Kong, China
| | - Wai-Kay Seto
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong, China
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong, China
| | - Thomas Yau
- Department of Medicine, The University of Hong Kong, Hong Kong, China
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Lui DTW, Tsoi KH, Lee CH, Cheung CYY, Fong CHY, Lee ACH, Tam AR, Pang P, Ho TY, Law CY, Lam CW, To KKW, Chow WS, Woo YC, Hung IFN, Tan KCB, Lam KSL. A prospective follow-up on thyroid function, thyroid autoimmunity and long COVID among 250 COVID-19 survivors. Endocrine 2023; 80:380-391. [PMID: 36596904 PMCID: PMC9810240 DOI: 10.1007/s12020-022-03281-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 12/01/2022] [Indexed: 01/04/2023]
Abstract
PURPOSE We evaluated the evolution of thyroid function and autoimmunity among COVID-19 survivors over 6 months in relation to interferon beta-1b treatment and long COVID. METHODS We included COVID-19 survivors managed in a major COVID-19 centre between July 2020 and May 2021 who were reassessed three and/or six months after acute COVID-19. Thyroid function tests (TFTs) and anti-thyroid antibody titres were measured at acute COVID-19, 3-month and 6-month. RESULTS 250 COVID-19 survivors were included (mean age 52.7 years, 50.4% men). Persistent thyroid function abnormalities were more likely in those with abnormal TFTs in acute COVID-19 (P < 0.001). Among 51 patients with abnormal TFTs in acute COVID-19, 82.4% resolved upon follow-up. Of 199 patients with normal TFTs in acute COVID-19, only 4.5% had incident abnormal TFTs, more likely in interferon-treated patients (P = 0.044) and none clinically overt. Among 129 patients with complete 6-month follow-up for anti-thyroid antibody titres, there was no significant change overall, except for modest increase in anti-thyroid antibody titres among the 84 interferon-treated patients (P < 0.05 at both 3 months and 6 months). Long COVID occurred in 19.5% and 10.4% at 3 and 6 months respectively, where TFTs and anti-thyroid antibody titres were not predictive of its occurrence. CONCLUSION Over 6 months, most abnormal TFTs in acute COVID-19 resolved, with no significant incident thyroid dysfunction. SARS-CoV-2 infection did not lead to change in thyroid autoimmunity, while interferon treatment was associated with modest increase in anti-thyroid antibody titres. Thyroid function and anti-thyroid antibodies did not play a significant role in long COVID.
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Affiliation(s)
- David Tak Wai Lui
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Kimberly Hang Tsoi
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Chi Ho Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Chloe Yu Yan Cheung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Carol Ho Yi Fong
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Alan Chun Hong Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Anthony Raymond Tam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Polly Pang
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Tip Yin Ho
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Chun Yiu Law
- Division of Chemical Pathology, Queen Mary Hospital, Hong Kong, China
| | - Ching Wan Lam
- Department of Pathology, The University of Hong Kong, Hong Kong, China
| | - Kelvin Kai Wang To
- Department of Microbiology, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Wing Sun Chow
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Yu Cho Woo
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Ivan Fan Ngai Hung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Kathryn Choon Beng Tan
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Karen Siu Ling Lam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China.
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Fung MHM, Lui DTW, Chiu KWH, Lee SH, Lee CH, Chow WS, Lee ACH, Tam AR, Pang P, Ho TY, Fong CHY, Loong CHN, Law CY, To KKW, Lam CW, Tan KCB, Woo YC, Hung IFN, Lam KSL, Lang B. A prospective follow-up of thyroid volume and thyroiditis features on ultrasonography among survivors of predominantly mild to moderate COVID-19. PeerJ 2023; 11:e15034. [PMID: 36949763 PMCID: PMC10026714 DOI: 10.7717/peerj.15034] [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: 10/13/2022] [Accepted: 02/19/2023] [Indexed: 03/19/2023] Open
Abstract
Background We previously showed that higher SARS-CoV-2 viral load correlated with smaller thyroid volumes among COVID-19 survivors at 2 months after acute COVID-19. Our current follow-up study evaluated the evolution of thyroid volumes and thyroiditis features within the same group of patients 6 months later. Methods Adult COVID-19 survivors who underwent thyroid ultrasonography 2 months after infection (USG1) were recruited for follow-up USG 6 months later (USG2). The primary outcome was the change in thyroid volume. We also reassessed thyroiditis features on USG, thyroid function and anti-thyroid antibodies. Results Fifty-four patients were recruited (mean age 48.1 years; 63% men). The mean thyroid volume increased from USG1 to USG2 (11.9 ± 4.8 to 14.5 ± 6.2 mL, p < 0.001). Thirty-two patients (59.3%) had significant increase in thyroid volume by ≥15%, and they had a median increase of +33.3% (IQR: +20.0% to +45.0%). Multivariable logistic regression analysis showed that only higher baseline SARS-CoV-2 viral load independently correlated with significant thyroid volume increase on USG2 (p = 0.022). Among the seven patients with thyroiditis features on USG1, six (85.7%) had the features resolved on USG2. None had new thyroiditis features on USG2. All abnormal thyroid function during acute COVID-19 resolved upon USG1 and USG2. Conclusion Most COVID-19 survivors had an increase in thyroid volume from early convalescent phase to later convalescent phase. This increase correlated with high initial SARS-CoV-2 viral load. Together with the resolution of thyroiditis features, these may suggest a transient direct atrophic effect of SARS-CoV-2 on the thyroid gland with subsequent recovery of thyroid volume and thyroiditis features.
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Affiliation(s)
- Man Him Matrix Fung
- Department of Surgery, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - David Tak Wai Lui
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Keith Wan Hang Chiu
- Department of Diagnostic Radiology, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Sherman Haynam Lee
- Department of Surgery, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Chi Ho Lee
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Wing Sun Chow
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Alan Chun Hong Lee
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Anthony Raymond Tam
- Department of Microbiology, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Polly Pang
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Tip Yin Ho
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Carol Ho Yi Fong
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Connie Hong Nin Loong
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Chun Yiu Law
- Division of Chemical Pathology, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Kelvin Kai Wang To
- Department of Microbiology, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Ching Wan Lam
- Department of Pathology, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | | | - Yu Cho Woo
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Ivan Fan Ngai Hung
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Karen Siu Ling Lam
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - Brian Lang
- Department of Surgery, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
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Lee CH, Wu MZ, Lui DTW, Fong CHY, Ren QW, Yu SY, Yuen MMA, Chow WS, Huang JY, Xu A, Yiu KH, Lam KSL. Prospective associations of circulating thrombospondin-2 level with heart failure hospitalization, left ventricular remodeling and diastolic function in type 2 diabetes. Cardiovasc Diabetol 2022; 21:231. [PMID: 36335340 PMCID: PMC9637303 DOI: 10.1186/s12933-022-01646-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 09/23/2022] [Indexed: 11/06/2022] Open
Abstract
Background Circulating thrombospondin-2 (TSP2) levels were associated with the development of heart failure (HF) in recent studies. However, these studies included only a minority of patients with type 2 diabetes, which is associated with an increased HF risk. As hyperglycemia induces TSP2 expression and its tissue expression increases in type 2 diabetes, we investigated the prospective association of circulating TSP2 with incident HF hospitalization (HHF), and its associations with longitudinal changes of echocardiographic parameters in type 2 diabetes. Methods Baseline serum TSP2 levels were measured in 4949 patients with type 2 diabetes to determine its association with incident HHF using multivariable Cox regression analysis. In the echocardiographic study, baseline serum TSP2 levels were measured in another 146 patients with type 2 diabetes but without cardiovascular diseases who underwent detailed transthoracic echocardiography at baseline and after 1 year. Results Over a median follow-up of 7.8 years, 330 of 4949 patients (6.7%) developed incident HHF. Baseline serum TSP2 levels were independently associated with the development of HHF (HR 1.31, 95%CI 1.06–1.62, p = 0.014) after adjustments for baseline conventional cardiovascular risk factors, atrial fibrillation, estimated glomerular filtration rate, albuminuria and high-sensitivity C-reactive protein level, use of angiotensin-converting enzyme inhibitors, angiotensin receptor blockers, loop-diuretics, aspirin, insulin, metformin and sodium-glucose co-transporter 2 inhibitors. Moreover, baseline serum TSP2 levels were independently associated with increase in average E/e’ and left atrial volume index (p = 0.04 and < 0.01, respectively). Conclusion Serum TSP2 levels were independently associated with both incident HHF and deterioration in diastolic function in type 2 diabetes. Trial registration Not Applicable Supplementary information The online version contains supplementary material available at 10.1186/s12933-022-01646-x.
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Lui DTW, Ho Man Tang E, Au ICH, Wu T, Lee CH, Wong CK, Cheung CYY, Fong CHY, Chow WS, Woo YC, Tan KCB, Lam KSL, Wong CKH. Evaluation of Fracture Risk Among Patients With Type 2 Diabetes and Nonvalvular Atrial Fibrillation Receiving Different Oral Anticoagulants. Diabetes Care 2022; 45:2620-2627. [PMID: 36126158 DOI: 10.2337/dc22-0664] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 08/26/2022] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Patients with type 2 diabetes are at higher risk for fracture risk because of attenuated bone turnover and impaired bone microarchitecture. The comparative effect of warfarin over non-vitamin K antagonist oral anticoagulants (NOACs) on incident fractures among patients with type 2 diabetes comorbid with atrial fibrillation (AF) remains to be elucidated. RESEARCH DESIGN AND METHODS This was a retrospective, propensity score-weighted, population-based cohort study of adults with type 2 diabetes and AF who were started on warfarin or NOAC between 2005 and 2019 identified from an electronic database of the Hong Kong Hospital Authority. The primary outcome was a composite of major osteoporotic fractures (hip, clinical vertebral, proximal humerus, and wrist). Hazard ratios (HRs) were calculated using Cox proportional hazards regression models. RESULTS A total of 15,770 patients with type 2 diabetes comorbid with AF were included (9,288 on NOAC, 6,482 on warfarin). During a median follow-up of 20 months, 551 patients (3.5%) sustained major osteoporotic fractures (201 [2.2%] in the NOAC group, 350 [5.4%] in the warfarin group). The adjusted cumulative incidence was lower among NOAC users than warfarin users (HR 0.80; 95% CI 0.64, 0.99; P = 0.044). Subgroup analyses showed consistent protective effects against major osteoporotic fractures among NOAC users across sex, age, HbA1c, duration of diabetes, and history of severe hypoglycemia compared with warfarin users. CONCLUSIONS NOAC use was associated with a lower risk of major osteoporotic fractures than warfarin use among patients with type 2 diabetes comorbid with AF. NOAC may be the preferred anticoagulant from the perspective of bone health.
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Affiliation(s)
- David Tak Wai Lui
- Department of Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Eric Ho Man Tang
- Department of Family Medicine and Primary Care, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Ivan Chi Ho Au
- Centre for Safe Medication Practice and Research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Tingting Wu
- Department of Family Medicine and Primary Care, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Chi Ho Lee
- Department of Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Chun Ka Wong
- Department of Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Chloe Yu Yan Cheung
- Department of Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Carol Ho Yi Fong
- Department of Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Wing Sun Chow
- Department of Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Yu Cho Woo
- Department of Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Kathryn Choon Beng Tan
- Department of Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Karen Siu Ling Lam
- Department of Medicine, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Carlos King Ho Wong
- Department of Family Medicine and Primary Care, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.,Centre for Safe Medication Practice and Research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.,Laboratory of Data Discovery for Health Limited, Hong Kong Science Park, New Territories, Hong Kong Special Administrative Region, China
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Lui D, Lee CH, Cheung C, Cheung V, Mak J, Fong C, Lui B, Chow WS, Lee A, Tam A, Pang P, Ho TY, Tan K, Woo YC, Hung I, Lam K. LBODP093 Evaluation Of The Impact Of Covid-19 Vaccines On Thyroid Function And Autoimmunity And The Potential Influence Of Pre-existing Thyroid Autoimmunity On Neutralizing Antibody Responses. J Endocr Soc 2022. [DOI: 10.1210/jendso/bvac150.1523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Abstract
Objectives
There are concerns for COVID-19 vaccination in causing thyroid dysfunction and triggering thyroid autoimmunity. Also, data on the impact of pre-existing thyroid autoimmunity on COVID-19 vaccination efficacy are limited. We evaluated the impact of COVID-19 vaccination on thyroid function and antibodies, and the influence of pre-existing thyroid autoimmunity on neutralizing antibody (NAb) responses.
Methods
Adults without history of COVID-19 or thyroid disorders who received COVID-19 vaccination between 14 June 2021 and 8 August 2021 at three vaccination centers were recruited. All participants received two doses of vaccines. Thyroid-stimulating hormone (TSH), free thyroxine (fT4), free triiodothyronine (fT3), anti-thyroid peroxidase (anti-TPO) and anti-thyroglobulin (anti-Tg) antibodies were measured at baseline and 8 weeks after the first dose of vaccination. Post-vaccination NAb against SARS-CoV-2 receptor-binding domain was measured.
Results
In total, 215 individuals were included (129 BNT162b2 [60%] and 86 CoronaVac [40%] recipients): mean age 49.6 years, 37.2% men, and 12.1% positive for anti-TPO/anti-Tg at baseline. After vaccination, TSH levels did not change (p=0.225), but fT4 slightly increased (from 12. 0±1.1 to 12.2±1.2 pmol/L, p<0. 001) and fT3 slightly decreased (from 4.1±0.4 to 4. 0±0.4 pmol/L, p<0. 001). Only 3 patients (1.4%) had abnormal thyroid function after vaccination: two occurred among BNT162b2 recipients - both were subclinical thyrotoxicosis (TSH 0.32mIU/L, fT4 11.51pmol/L and fT3 4.40pmol/L; TSH 0.34mIU/L, fT4 12.67pmol/L and fT3 4.22pmol/L; both were anti-TPO and anti-Tg negative before and after vaccination); one occurred among CoronaVac recipients - isolated mild low fT3 (TSH 0.90mIU/L, fT4 9.94pmol/L and fT3 2.33pmol/L; anti-TPO/Tg negative before and after vaccination). All three recipients were asymptomatic. Both anti-TPO and anti-Tg titers increased modestly after vaccination (anti-TPO: from 7.50 [IQR: 5.90-11.2] to 9.80 IU/mL [IQR: 7.80-13.1], p<0. 001; anti-Tg: from 12.4 [IQR: 11.1-14.9] to 15.7 IU/mL [IQR: 14.2-18.2], p<0. 001), without significant changes in anti-TPO/Tg positivity. Changes in thyroid function and anti-thyroid antibodies were generally consistent between BNT162b2 and CoronaVac recipients, although anti-TPO titer rise was greater after BNT162b2 (p<0. 001). NAb responses were similar between individuals with and without pre-existing thyroid autoimmunity (p=0.855).
Conclusion
COVID-19 vaccination was associated with a modest increase in anti-thyroid antibody titers. Anti-TPO increase was greater among BNT162b2 recipients. However, there was no clinically significant thyroid dysfunction 8 weeks post-vaccination. NAb responses were not influenced by pre-existing thyroid autoimmunity. Our results provided important reassurance to people to proceed to COVID-19 vaccination.
Presentation: No date and time listed
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Affiliation(s)
- David Lui
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Chi H Lee
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Chloe Cheung
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Venus Cheung
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Jimmy Mak
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Carol Fong
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Brian Lui
- The University of Hong Kong , Hong Kong , Hong Kong
| | | | - Alan Lee
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Anthony Tam
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Polly Pang
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Tip Yin Ho
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Kathryn Tan
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Yu Cho Woo
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Ivan Hung
- The University of Hong Kong , Hong Kong , Hong Kong
| | - Karen Lam
- The University of Hong Kong , Hong Kong , Hong Kong
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Lui DTW, Lee CH, Cheung CYY, Cheung Mak JH, Fong CHY, Lui BWC, Cheung VSY, Chow WS, Lee ACH, Tam AR, Pang P, Ho TY, Tan KCB, Woo YC, Hung IFN, Lam KSL. Effect of COVID-19 Vaccines on Thyroid Function and Autoimmunity and Effect of Thyroid Autoimmunity on Antibody Response. J Clin Endocrinol Metab 2022; 107:e3781-e3789. [PMID: 35679093 PMCID: PMC9214146 DOI: 10.1210/clinem/dgac355] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Indexed: 12/11/2022]
Abstract
CONTEXT There are concerns for COVID-19 vaccination in triggering thyroid autoimmunity and causing thyroid dysfunction. Also, data on the effect of preexisting thyroid autoimmunity on the efficacy of COVID-19 vaccination are limited. OBJECTIVES We evaluated the effect of COVID-19 vaccination on thyroid function and antibodies, and the influence of preexisting thyroid autoimmunity on neutralizing antibody (NAb) responses. METHODS Adults without a history of COVID-19/thyroid disorders who received the COVID-19 vaccination during June to August 2021 were recruited. All received 2 doses of vaccines. Thyrotropin (TSH), free thyroxine (fT4), free 3,5,3'-triiodothyronine (fT3), antithyroid peroxidase (anti-TPO), and antithyroglobulin (anti-Tg) antibodies were measured at baseline and 8 weeks post vaccination. NAb against SARS-CoV-2 receptor-binding domain was measured. RESULTS A total of 215 individuals were included (129 [60%] BNT162b2; 86 [40%] CoronaVac recipients): mean age 49.6 years, 37.2% men, and 12.1% anti-TPO/Tg positive at baseline. After vaccination, TSH did not change (P = .225), but fT4 slightly increased (from 12.0 ± 1.1 to 12.2 ± 1.2 pmol/L [from 0.93 ± 0.09 to 0.95 ± 0.09 ng/dL], P < .001) and fT3 slightly decreased (from 4.1 ± 0.4 to 4.0 ± 0.4 pmol/L [from 2.67 ± 0.26 to 2.60 ± 0.26 pg/mL], P < .001). Only 3 patients (1.4%) had abnormal thyroid function post vaccination, none clinically overt. Anti-TPO and anti-Tg titers increased modestly after vaccination (P < .001), without statistically significant changes in anti-TPO/Tg positivity. Changes in thyroid function and antithyroid antibodies were consistent between BNT162b2 and CoronaVac recipients, except for greater anti-TPO titer increase post BNT162b2 (P < .001). NAb responses were similar between individuals with and without preexisting thyroid autoimmunity (P = .855). CONCLUSION COVID-19 vaccination was associated with a modest increase in antithyroid antibody titers. Anti-TPO increase was greater among BNT162b2 recipients. However, there was no clinically significant thyroid dysfunction post vaccination. NAb responses were not influenced by preexisting thyroid autoimmunity. Our results provide important reassurance for people to receive the COVID-19 vaccination.
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Affiliation(s)
- David Tak Wai Lui
- Address Correspondence to: Dr David Tak Wai Lui, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Hong Kong, , Telephone number: +852 2255-6979
| | - Chi Ho Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Chloe Yu Yan Cheung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Jimmy Ho Cheung Mak
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Carol Ho Yi Fong
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Brian Wan Ching Lui
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Venus Suet Ying Cheung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Wing Sun Chow
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Alan Chun Hong Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Anthony Raymond Tam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Polly Pang
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Tip Yin Ho
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Kathryn Choon Beng Tan
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Yu Cho Woo
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Ivan Fan Ngai Hung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Karen Siu Ling Lam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
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Lui DTW, Li YK, Lee CH, Chow WS, Lee ACH, Tam AR, Pang P, Ho TY, Cheung CYY, Fong CHY, To KKW, Tan KCB, Woo YC, Hung IFN, Lam KSL. A prospective study of the impact of glycaemic status on clinical outcomes and anti-SARS-CoV-2 antibody responses among patients with predominantly non-severe COVID-19. Diabetes Res Clin Pract 2022; 185:109232. [PMID: 35131374 PMCID: PMC8816793 DOI: 10.1016/j.diabres.2022.109232] [Citation(s) in RCA: 2] [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: 10/05/2021] [Revised: 12/30/2021] [Accepted: 01/31/2022] [Indexed: 01/18/2023]
Abstract
AIMS We carried out this prospective study of predominantly non-severe COVID-19 patients, to evaluate the influence of glycaemic status on clinical outcomes and neutralising antibody (Nab) responses, potentially relevant to the COVID-19 vaccination programme. METHODS We included consecutive adults admitted to Queen Mary Hospital for COVID-19 from July 2020-May 2021. Glycaemic status was defined by admission HbA1c. Clinical deterioration was defined by radiological progression/new oxygen requirement/intensive care requirement/death. COVID-19 survivors had Nab measurements at 1-month, 2-month, 3-month and 6-month post-discharge. RESULTS Among 605 patients (96.9% non-severe COVID-19; 325 normoglycaemia, 185 prediabetes, 95 diabetes), 74 (12.2%) had clinical deterioration, more likely with worse glycaemic status and higher HbA1c (p < 0.001). Older age (p < 0.001), higher viral loads (p < 0.001), higher C-reactive protein (CRP) (p < 0.001) and symptomatic presentation (p = 0.008), but not glycaemic status/HbA1c, independently predicted clinical deterioration. Older age (p = 0.001), higher CRP (p = 0.038), elevated lactate dehydrogenase (p = 0.046) and interferon treatment (p = 0.001), but not glycaemic status/HbA1c, independently predicted Nab titres. Rate of Nab titre decline was comparable across glycaemic status. CONCLUSIONS COVID-19 patients with worse glycaemic status were more likely to deteriorate clinically, mediated through the association of worse glycaemic status with older age, more severe inflammation and higher viral loads. Importantly, Nab responses did not differ across glycaemic status.
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Affiliation(s)
- David Tak Wai Lui
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Yan Kiu Li
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Chi Ho Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Wing Sun Chow
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Alan Chun Hong Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Anthony Raymond Tam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Polly Pang
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Tip Yin Ho
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Chloe Yu Yan Cheung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Carol Ho Yi Fong
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Kelvin Kai Wang To
- Department of Microbiology, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Kathryn Choon Beng Tan
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Yu Cho Woo
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Ivan Fan Ngai Hung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China.
| | - Karen Siu Ling Lam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China.
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Lui DTW, Lee CH, Chow WS, Lee ACH, Tam AR, Pang P, Ho TY, Cheung CYY, Fong CHY, Law CY, To KKW, Lam CW, Tan KCB, Woo YC, Hung IFN, Lam KSL. The Independent Association of TSH and Free Triiodothyronine Levels With Lymphocyte Counts Among COVID-19 Patients. Front Endocrinol (Lausanne) 2022; 12:774346. [PMID: 35095756 PMCID: PMC8792436 DOI: 10.3389/fendo.2021.774346] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [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: 09/11/2021] [Accepted: 12/16/2021] [Indexed: 12/19/2022] Open
Abstract
Background Both lymphopenia and thyroid dysfunction are commonly observed among COVID-19 patients. Whether thyroid function independently correlates with lymphocyte counts (LYM) remains to be elucidated. Methods We included consecutive adults without known thyroid disorder admitted to Queen Mary Hospital for COVID-19 from July 2020 to April 2021 who had thyroid-stimulating hormone (TSH), free thyroxine (fT4), free triiodothyronine (fT3) and LYM measured on admission. Results A total of 541 patients were included. Median LYM was 1.22 x 109/L, with 36.0% of the cohort lymphopenic. 83 patients (15.4%) had abnormal thyroid function tests (TFTs), mostly non-thyroidal illness syndrome (NTIS). Patients with lymphopenia had lower TSH, fT4 and fT3 levels than those without. Multivariable stepwise linear regression analysis revealed that both TSH (standardized beta 0.160, p<0.001) and fT3 (standardized beta 0.094, p=0.023), but not fT4, remained independently correlated with LYM, in addition to age, SARS-CoV-2 viral load, C-reactive protein levels, coagulation profile, sodium levels and more severe clinical presentations. Among the 40 patients who had reassessment of TFTs and LYM after discharge, at a median of 9 days from admission, there were significant increases in TSH (p=0.031), fT3 (p<0.001) and LYM (p<0.001). Furthermore, patients who had both lymphopenia and NTIS were more likely to deteriorate compared to those who only had either one alone, and those without lymphopenia or NTIS (p for trend <0.001). Conclusion TSH and fT3 levels showed independent positive correlations with LYM among COVID-19 patients, supporting the interaction between the hypothalamic-pituitary-thyroid axis and immune system in COVID-19.
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Affiliation(s)
- David Tak Wai Lui
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
| | - Chi Ho Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
| | - Wing Sun Chow
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
| | - Alan Chun Hong Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
| | - Anthony Raymond Tam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
| | - Polly Pang
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
| | - Tip Yin Ho
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
| | - Chloe Yu Yan Cheung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
| | - Carol Ho Yi Fong
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
| | - Chun Yiu Law
- Division of Chemical Pathology, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
| | - Kelvin Kai Wang To
- Department of Microbiology, The University of Hong Kong, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
| | - Ching Wan Lam
- Department of Pathology, The University of Hong Kong Hong Kong, Hong Kong SAR, China
| | - Kathryn Choon Beng Tan
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
| | - Yu Cho Woo
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
| | - Ivan Fan Ngai Hung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
| | - Karen Siu Ling Lam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital Hong Kong, Hong Kong SAR, China
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Lui DTW, Fung MMH, Chiu KWH, Lee CH, Chow WS, Lee ACH, Tam AR, Pang P, Ho TY, Fong CHY, Loong CHN, Wong WW, Lee CYY, Law CY, To KKW, Lam CW, Tan KCB, Woo YC, Hung IFN, Lam KSL, Lang BHH. Higher SARS-CoV-2 viral loads correlated with smaller thyroid volumes on ultrasound among male COVID-19 survivors. Endocrine 2021; 74:205-214. [PMID: 34467467 PMCID: PMC8408037 DOI: 10.1007/s12020-021-02855-2] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Accepted: 08/19/2021] [Indexed: 11/28/2022]
Abstract
PURPOSE Thyroid dysfunction, including thyroiditis, is well recognized in COVID-19 patients. We evaluated thyroid ultrasonographic features among COVID-19 survivors, which are less well known. METHODS Adult COVID-19 survivors without known thyroid disorders who attended dedicated COVID-19 clinic underwent thyroid ultrasonography and assessment of thyroid function and autoimmunity. Adults admitted for acute non-thyroidal surgical problems and negative for COVID-19 were recruited as control. SARS-CoV-2 viral load (VL) was presented as the inverse of cycle threshold values from the real-time reverse transcription-polymerase chain reaction of the respiratory specimen on admission. RESULTS In total, 79 COVID-19 patients and 44 non-COVID-19 controls were included. All abnormal thyroid function tests during acute COVID-19 recovered upon follow-up. Thyroid ultrasonography was performed at a median of 67 days after acute COVID-19. The median thyroid volume was 9.73 mL (IQR: 7.87-13.70). In multivariable linear regression, SARS-CoV-2 VL on presentation (standardized beta -0.206, p = 0.042) inversely correlated with thyroid volume, in addition to body mass index at the time of ultrasonography (p < 0.001). Sex-specific analysis revealed similar results among men but not women. Eleven COVID-19 patients (13.9%) had ultrasonographic changes suggestive of thyroiditis, comparable to non-COVID-19 patients (p = 0.375). None of these 11 patients had isolated low thyroid-stimulating hormone levels suggestive of thyroiditis at initial admission or the time of ultrasonography. CONCLUSIONS Higher SARS-CoV-2 VL on presentation were associated with smaller thyroid volumes, especially in men. Further research is suggested to investigate this possible direct viral effect of SARS-CoV-2 on the thyroid gland. There was no increased rate of ultrasonographic features suggestive of thyroiditis in COVID-19 survivors.
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Affiliation(s)
- David Tak Wai Lui
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Matrix Man Him Fung
- Department of Surgery, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Keith Wan Hang Chiu
- Department of Diagnostic Radiology, The University of Hong Kong, Hong Kong, China
| | - Chi Ho Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Wing Sun Chow
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Alan Chun Hong Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Anthony Raymond Tam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Polly Pang
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Tip Yin Ho
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Carol Ho Yi Fong
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Connie Hong Nin Loong
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Wade Wei Wong
- Department of Surgery, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Cassandra Yuen Yan Lee
- Department of Surgery, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Chun Yiu Law
- Division of Chemical Pathology, Queen Mary Hospital, Hong Kong, China
| | - Kelvin Kai Wang To
- Department of Microbiology, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Ching Wan Lam
- Department of Pathology, The University of Hong Kong, Hong Kong, China
| | - Kathryn Choon Beng Tan
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Yu Cho Woo
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Ivan Fan Ngai Hung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Karen Siu Ling Lam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Brian Hung Hin Lang
- Department of Surgery, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China.
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Lui DTW, Lee CH, Chow WS, Lee ACH, Tam AR, Fong CHY, Law CY, Leung EKH, To KKW, Tan KCB, Woo YC, Lam CW, Hung IFN, Lam KSL. Role of non-thyroidal illness syndrome in predicting adverse outcomes in COVID-19 patients predominantly of mild-to-moderate severity. Clin Endocrinol (Oxf) 2021; 95:469-477. [PMID: 33813743 PMCID: PMC8250365 DOI: 10.1111/cen.14476] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 03/27/2021] [Accepted: 03/31/2021] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Existing studies reported the potential prognostic role of non-thyroidal illness syndrome (NTIS), characterized by low triiodothyronine (T3) with normal/low thyroid-stimulating hormone (TSH), mainly in severe COVID-19. None considered the significant impact of SARS-CoV-2 viral load on adverse outcomes. We aimed to clarify the prognostic role of NTIS among predominantly mild-to-moderate COVID-19 patients. DESIGN A prospective study of COVID-19 patients. PATIENTS AND MEASUREMENTS Consecutive adults admitted to Queen Mary Hospital for confirmed COVID-19 from July to December 2020 were prospectively recruited. SARS-CoV-2 viral load was represented by cycle threshold (Ct) values from real-time reverse transcription-polymerase chain reaction of the respiratory specimen on admission. Serum TSH, free thyroxine and free T3 were measured on admission. The outcome was deterioration in clinical severity, defined as worsening in ≥1 category of clinical severity according to the Chinese National Health Commission guideline. RESULTS We recruited 367 patients. At baseline, 75.2% had mild disease, and 27 patients (7.4%) had NTIS. Fifty-three patients (14.4%) had clinical deterioration. Patients with NTIS were older, had more comorbidities, worse symptomatology, higher SARS-CoV-2 viral loads and worse profiles of inflammatory and tissue injury markers. They were more likely to have clinical deterioration (p < .001). In multivariable stepwise logistic regression analysis, NTIS independently predicted clinical deterioration (adjusted odds ratio 3.19, p = .017), in addition to Ct value <25 (p < .001), elevated C-reactive protein (p = .004), age >50 years (p = .011) and elevated creatine kinase (p = .017). CONCLUSIONS Non-thyroidal illness syndrome was not uncommon even in mild-to-moderate COVID-19 patients. NTIS on admission could predict clinical deterioration in COVID-19, independent of SARS-CoV-2 viral load, age and markers of inflammation and tissue injury.
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Affiliation(s)
- David Tak Wai Lui
- Department of MedicineThe University of Hong KongQueen Mary HospitalHong KongChina
| | - Chi Ho Lee
- Department of MedicineThe University of Hong KongQueen Mary HospitalHong KongChina
| | - Wing Sun Chow
- Department of MedicineThe University of Hong KongQueen Mary HospitalHong KongChina
| | - Alan Chun Hong Lee
- Department of MedicineThe University of Hong KongQueen Mary HospitalHong KongChina
| | - Anthony Raymond Tam
- Department of MedicineThe University of Hong KongQueen Mary HospitalHong KongChina
| | - Carol Ho Yi Fong
- Department of MedicineThe University of Hong KongQueen Mary HospitalHong KongChina
| | - Chun Yiu Law
- Division of Chemical PathologyQueen Mary HospitalHong KongChina
| | - Eunice Ka Hong Leung
- Department of MedicineThe University of Hong KongQueen Mary HospitalHong KongChina
| | - Kelvin Kai Wang To
- Department of MicrobiologyThe University of Hong KongQueen Mary HospitalHong KongChina
| | | | - Yu Cho Woo
- Department of MedicineThe University of Hong KongQueen Mary HospitalHong KongChina
| | - Ching Wan Lam
- Department of PathologyThe University of Hong KongHong KongChina
| | - Ivan Fan Ngai Hung
- Department of MedicineThe University of Hong KongQueen Mary HospitalHong KongChina
| | - Karen Siu Ling Lam
- Department of MedicineThe University of Hong KongQueen Mary HospitalHong KongChina
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Lee CH, Kan AKC, Lui DTW, Fong CHY, Chan DSH, Yuen MMA, Chow WS, Woo YC, Xu A, Lam KSL. Prospective association of serum adipocyte fatty acid-binding protein with heart failure hospitalization in diabetes. ESC Heart Fail 2021; 8:3964-3974. [PMID: 34355511 PMCID: PMC8497330 DOI: 10.1002/ehf2.13472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 05/25/2021] [Accepted: 05/31/2021] [Indexed: 11/12/2022] Open
Abstract
AIMS Adipocyte fatty acid-binding protein (AFABP) is associated with cardiovascular diseases in type 2 diabetes. Whether circulating AFABP levels are associated with the risk of heart failure (HF) in type 2 diabetes remains undefined. We investigated the prospective association of circulating AFABP levels with incident HF hospitalization in type 2 diabetes, and its relationship to the use of sodium glucose co-transporter 2 inhibitors (SGLT2i) which reduce HF risk. METHODS AND RESULTS Baseline serum AFABP level was measured in 3322 Chinese participants without known history of cardiovascular diseases or hospitalization for HF, recruited from the Hong Kong West Diabetes Registry. Its association with incident HF hospitalization was evaluated using multivariable Cox regression analysis. Use of SGLT2i was included as a time-dependent covariate. Among these 3322 participants (52.9% men; mean age 60.0 ± 12.6), 176 (5.3%) developed HF hospitalization over a median follow-up of 8 years. Seven hundred and thirty-one (22%) were started on SGLT2i during the study period (empagliflozin 55.1%, dapagliflozin 44.2%, canagliflozin 0.4%, and ertugliflozin 0.3%). Serum AFABP levels were significantly higher in participants who developed HF hospitalization than those who did not (men: 14.8 vs. 8.3 ng/mL; women: 21.5 vs. 14.6 ng/mL; all: 18.6 vs. 10.9 ng/mL, P < 0.001). In multivariable Cox regression analysis, baseline serum AFABP level was significantly associated with incident HF hospitalization [hazard ratio (HR) 1.38, 95% confidence interval (CI) 1.06-1.80, P = 0.019] independent of the use of SGLT2i, in a model also consisting of age; sex; body mass index; smoking status; duration of diabetes; hypertension, dyslipidaemia; atrial fibrillation; presence of chronic kidney disease and albuminuria; glycated haemoglobin and high-sensitivity C-reactive protein levels; and use of metformin, insulin, aspirin, furosemide, and beta-blockers at baseline. High cumulative defined daily dose (cDDD) of SGLT2i was protective of incident HF hospitalization (HR 0.10, 95% CI 0.01-0.68, P = 0.019). The addition of circulating AFABP level to a clinical model of conventional HF risk factors provided significant improvement in the category-free net reclassification index (11.5%, 95% CI 1.6-22.1, P = 0.02) and integrated discrimination improvement (0.3%, 95% CI 0.1-1.7, P = 0.04). A dose-dependent reduction in cumulative incidence of HF hospitalization in response to SGLT2i, based on cDDD, was more clearly observed in participants with a higher baseline AFABP level above the sex-specific median (P for trend <0.01). CONCLUSIONS Circulating AFABP level is independently associated with incident HF hospitalization in type 2 diabetes and is potentially helpful in risk stratification for the prevention of HF hospitalization.
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Affiliation(s)
- Chi Ho Lee
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Pokfulam, Hong Kong.,State Key Laboratory of Pharmaceutical Biotechnology, University of Hong Kong, Hong Kong
| | - Andy Ka Chun Kan
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Pokfulam, Hong Kong
| | - David Tak Wai Lui
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Pokfulam, Hong Kong
| | - Carol Ho Yi Fong
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Pokfulam, Hong Kong
| | - Darren Shing Hei Chan
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Pokfulam, Hong Kong
| | - Michele Mae Ann Yuen
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Pokfulam, Hong Kong
| | - Wing Sun Chow
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Pokfulam, Hong Kong
| | - Yu Cho Woo
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Pokfulam, Hong Kong
| | - Aimin Xu
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Pokfulam, Hong Kong.,State Key Laboratory of Pharmaceutical Biotechnology, University of Hong Kong, Hong Kong
| | - Karen Siu Ling Lam
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Pokfulam, Hong Kong.,State Key Laboratory of Pharmaceutical Biotechnology, University of Hong Kong, Hong Kong
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Lui DTW, Lee CH, Chow WS, Lee ACH, Tam AR, Fong CHY, Law CY, Leung EKH, To KKW, Tan KCB, Woo YC, Lam CW, Hung IFN, Lam KSL. Insights from a Prospective Follow-up of Thyroid Function and Autoimmunity among COVID-19 Survivors. Endocrinol Metab (Seoul) 2021; 36:582-589. [PMID: 34107601 PMCID: PMC8258341 DOI: 10.3803/enm.2021.983] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [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: 02/03/2021] [Accepted: 03/26/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The occurrence of Graves' disease and Hashimoto thyroiditis after coronavirus disease 2019 (COVID-19) raised concerns that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) may trigger thyroid autoimmunity. We aimed to address the current uncertainties regarding incident thyroid dysfunction and autoimmunity among COVID-19 survivors. METHODS We included consecutive adult COVID-19 patients without known thyroid disorders, who were admitted to Queen Mary Hospital from July 21 to September 21, 2020 and had serum levels of thyroid-stimulating hormone, free thyroxine, free triiodothyronine (fT3), and anti-thyroid antibodies measured both on admission and at 3 months. RESULTS In total, 122 patients were included. Among 20 patients with abnormal thyroid function tests (TFTs) on admission (mostly low fT3), 15 recovered. Among 102 patients with initial normal TFTs, two had new-onset abnormalities that could represent different phases of thyroiditis. Among 104 patients whose anti-thyroid antibody titers were reassessed, we observed increases in anti-thyroid peroxidase (TPO) (P<0.001) and anti-thyroglobulin (P<0.001), but not anti-thyroid stimulating hormone receptor titers (P=0.486). Of 82 patients with negative anti-TPO findings at baseline, 16 had a significant interval increase in anti-TPO titer by >12 U, and four became anti-TPO-positive. Worse baseline clinical severity (P=0.018), elevated C-reactive protein during hospitalization (P=0.033), and higher baseline anti-TPO titer (P=0.005) were associated with a significant increase in anti-TPO titer. CONCLUSION Most patients with thyroid dysfunction on admission recovered during convalescence. Abnormal TFTs suggestive of thyroiditis occurred during convalescence, but infrequently. Importantly, our novel observation of an increase in anti-thyroid antibody titers post-COVID-19 warrants further follow-up for incident thyroid dysfunction among COVID-19 survivors.
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Affiliation(s)
- David Tak Wai Lui
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong,
China
| | - Chi Ho Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong,
China
| | - Wing Sun Chow
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong,
China
| | - Alan Chun Hong Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong,
China
| | - Anthony Raymond Tam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong,
China
| | - Carol Ho Yi Fong
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong,
China
| | - Chun Yiu Law
- Division of Chemical Pathology, Queen Mary Hospital, Hong Kong,
China
| | - Eunice Ka Hong Leung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong,
China
| | - Kelvin Kai Wang To
- Department of Microbiology, The University of Hong Kong, Queen Mary Hospital, Hong Kong,
China
| | - Kathryn Choon Beng Tan
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong,
China
| | - Yu Cho Woo
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong,
China
| | - Ching Wan Lam
- Department of Pathology, The University of Hong Kong, Hong Kong,
China
| | - Ivan Fan Ngai Hung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong,
China
| | - Karen Siu Ling Lam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong,
China
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Lui DTW, Lee CH, Chow WS, Lee ACH, Tam AR, Fong CHY, Law CY, Leung EKH, To KKW, Tan KCB, Woo YC, Lam CW, Hung IFN, Lam KSL. Insights From Prospective Follow-up of Thyroid Function and Autoimmunity Among Covid-19 Survivors. J Endocr Soc 2021. [PMCID: PMC8089826 DOI: 10.1210/jendso/bvab048.1715] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Objective: Occurrence of Graves’ disease and Hashimoto’s thyroiditis after coronavirus disease 2019 (COVID-19) raised the concern about severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) triggering thyroid autoimmunity. Uncertainties remain regarding incident thyroid dysfunction and autoimmunity among COVID-19 survivors. We carried out a prospective study to characterize the evolution of thyroid function and autoimmunity among COVID-19 survivors. Method: Consecutive adult patients, without known thyroid disorders, admitted to Queen Mary Hospital for confirmed COVID-19 from 21 July to 21 September 2020 were included. Serum levels of thyroid-stimulating hormone (TSH), free thyroxine (fT4), free triiodothyronine (fT3) and anti-thyroid antibodies were measured on admission and at 3 months. Positive anti-thyroid peroxidase (anti-TPO) and anti-thyroglobulin (anti-Tg) was defined by >100 units. Results: Among 200 COVID-19 survivors, 122 had reassessment thyroid function tests (TFTs) (median age: 57.5 years; 49.2% men). Baseline characteristics of patients who did and did not have reassessment were comparable. Among the 20 patients with baseline abnormal TFTs on admission, mostly low fT3, 15 recovered. Of the 102 patients with normal TFTs on admission, two (2.0%) had new onset abnormal TFTs, which may represent TFTs in different phases of thyroiditis (one had mildly elevated TSH 5.8 mIU/L, with normal fT4 [16 pmol/L] and fT3 [4.3 pmol/L], the other had mildly raised fT4 25 pmol/L with normal TSH [1.1 mIU/L] and fT3 [4.7 pmol/L]). Among 104 patients with anti-thyroid antibody titers reassessed, we observed increases in anti-TPO (baseline: 28.3 units [IQR 14.0-67.4] vs reassessment: 35.0 units [IQR: 18.8-99.0]; p<0.001) and anti-Tg titers (baseline: 6.6 units [IQR 4.9-15.6] vs reassessment: 8.7 units [IQR: 6.6-15.4]; p<0.001), but no change in anti-TSHR titer (baseline: 1.0 IU/L [IQR: 0.8-1.2] vs reassessment: 1.0 IU/L [IQR: 0.8-1.3]; p=0.486). Of the 82 patients with negative anti-TPO at baseline, 16 had significant interval increase in anti-TPO titer by >12 units (2×6 [precision of the anti-TPO assay in normal range being 6 units per SD]), of these, four became anti-TPO positive. Factors associated a significant increase in anti-TPO titer included worse baseline clinical severity (p=0.018), elevated C-reactive protein during hospitalization (p=0.033), and higher baseline anti-TPO titer (p=0.005). Conclusion: Majority of thyroid dysfunction on admission recovered during convalescence. Abnormal TFTs suggestive of thyroiditis could occur during convalescence, though uncommon. Importantly, we provided the novel observation of an increase in anti-thyroid antibody titers post-COVID-19, suggesting the potential of SARS-CoV-2 in triggering thyroid autoimmunity, which warrants further follow-up for incident thyroid dysfunction among COVID-19 survivors.
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Affiliation(s)
- David T W Lui
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Chi Ho Lee
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Wing Sun Chow
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Alan C H Lee
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | | | - Carol H Y Fong
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Chun Yiu Law
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Eunice K H Leung
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Kelvin K W To
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Kathryn C B Tan
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Yu Cho Woo
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Ching Wan Lam
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Ivan F N Hung
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Karen S L Lam
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
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Lui DTW, Lee CH, Chau VWK, Fong CHY, Yeung KMY, Lam JKY, Lee ACH, Chow WS, Tan KCB, Woo YC, Lam KSL. Potential role of fibroblast growth factor 21 in the deterioration of bone quality in impaired glucose tolerance. J Endocrinol Invest 2021; 44:523-530. [PMID: 32602078 DOI: 10.1007/s40618-020-01337-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 02/19/2020] [Accepted: 06/14/2020] [Indexed: 12/23/2022]
Abstract
PURPOSE Findings on trabecular bone score (TBS), an index of bone quality, have been reported in prediabetes defined by impaired fasting glucose or HbA1c. Here, we assessed the bone mineral density (BMD) and TBS in prediabetes individuals with impaired glucose tolerance (IGT), and investigated the association of these bone parameters with serum levels of fibroblast growth factor 21 (FGF21), a hormone implicated in bone metabolism and with higher levels in IGT. METHODS Chinese postmenopausal women aged 55-80 years, without diabetes, were recruited from the Hong Kong Cardiovascular Risk Factor Prevalence Study in 2016-2018. Normal glucose tolerance (NGT) was defined by fasting glucose < 5.6 mmol/L and 2-h plasma glucose (2hG) < 7.8 mmol/L, and IGT by 2hG 7.8-11 mmol/L. Serum levels of FGF21 and other bone metabolism regulators were measured. Insulin sensitivity was assessed by the Matsuda index. Independent determinants of TBS were evaluated using multivariable stepwise linear regression. RESULTS 173 individuals with NGT and 73 with IGT were included. TBS was lower in those with IGT compared to those with NGT, while BMD was comparable. Individuals with IGT had significantly higher serum FGF21 levels, which in turn showed an independent inverse relationship with TBS, attenuated after inclusion of the Matsuda index. Serum FGF21 levels, however, did not correlate with BMD. CONCLUSION Among Chinese postmenopausal women, bone quality was worse in IGT, despite comparable bone density. FGF21 levels showed a significant independent inverse relationship with TBS, partly attributed to insulin resistance. Whether FGF21 contributes to the impaired bone quality in IGT remains speculative.
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Affiliation(s)
- D T W Lui
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - C H Lee
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - V W K Chau
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - C H Y Fong
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - K M Y Yeung
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - J K Y Lam
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - A C H Lee
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - W S Chow
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - K C B Tan
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Y C Woo
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China.
| | - K S L Lam
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China.
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Lui DTW, Lee CH, Chow WS, Lee ACH, Tam AR, Fong CHY, Law CY, Leung EKH, To KKW, Tan KCB, Woo YC, Lam CW, Hung IFN, Lam KSL. Thyroid Dysfunction in Relation to Immune Profile, Disease Status, and Outcome in 191 Patients with COVID-19. J Clin Endocrinol Metab 2021; 106:e926-e935. [PMID: 33141191 PMCID: PMC7665541 DOI: 10.1210/clinem/dgaa813] [Citation(s) in RCA: 144] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Indexed: 01/10/2023]
Abstract
OBJECTIVE Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-related thyroiditis is increasingly recognized. The role of thyroid autoimmunity and SARS-CoV-2 viral load in SARS-CoV-2-related thyroid dysfunction is unclear. We evaluated the thyroid function of a cohort of coronavirus disease 2019 (COVID-19) patients, in relation to their clinical features, and biochemical, immunological, and inflammatory markers. METHODS Consecutive adult patients, without known thyroid disorders, admitted to Queen Mary Hospital for COVID-19 from July 21 to August 21, 2020, were included. Serum levels of thyroid-stimulating hormone (TSH), free thyroxine, free triiodothyronine (fT3), and antithyroid antibodies were measured on admission. RESULTS Among 191 patients with COVID-19 (mean age 53.5 ± 17.2 years; 51.8% male), 84.3% were mild, 12.6% were moderate, and 3.1% were severe. Abnormal thyroid function was seen in 13.1%. Ten patients had isolated low TSH, suggestive of subclinical thyrotoxicosis due to thyroiditis, although the contribution of autoimmunity was likely in 2 of them. Autoimmune thyroiditis probably also contributed to subclinical hypothyroidism in another patient. Ten patients had isolated low fT3, likely representing nonthyroidal illness syndrome. Lower SARS-Cov-2 polymerase chain reaction cycle threshold values and elevated C-reactive protein were independently associated with occurrence of low TSH (P = .030) and low fT3 (P = .007), respectively. A decreasing trend of fT3 with increasing COVID-19 severity (P = .032) was found. Patients with low fT3 had more adverse COVID-19-related outcomes. CONCLUSION Around 15% of patients with mild to moderate COVID-19 had thyroid dysfunction. There may be a direct effect of SARS-CoV-2 on thyroid function, potentially leading to exacerbation of pre-existing autoimmune thyroid disease. Low fT3, associated with systemic inflammation, may have a prognostic significance.
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Affiliation(s)
- David Tak Wai Lui
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Chi Ho Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Wing Sun Chow
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Alan Chun Hong Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Anthony Raymond Tam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Carol Ho Yi Fong
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Chun Yiu Law
- Division of Chemical Pathology, Queen Mary Hospital, Hong Kong, China
| | - Eunice Ka Hong Leung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Kelvin Kai Wang To
- Department of Microbiology, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Kathryn Choon Beng Tan
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Yu Cho Woo
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Ching Wan Lam
- Department of Pathology, The University of Hong Kong, Hong Kong, China
| | - Ivan Fan Ngai Hung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Karen Siu Ling Lam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
- Address Correspondence to: Professor Karen Siu Ling Lam, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Telephone number: +852 2255-4783, Fax number: +852 2816-2863, Email
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18
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Lui DTW, Hung IFN, Lee CH, Lee ACH, Tam AR, Pang P, Ho TY, Cheung CYY, Fong CHY, Law CY, To KKW, Lam CW, Chow WS, Woo YC, Lam KSL, Tan KCB. The Impact of Interferon Beta-1b Therapy on Thyroid Function and Autoimmunity Among COVID-19 Survivors. Front Endocrinol (Lausanne) 2021; 12:746602. [PMID: 34659128 PMCID: PMC8515032 DOI: 10.3389/fendo.2021.746602] [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] [Received: 07/24/2021] [Accepted: 09/10/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Some studies have indicated that interferon (IFN) may be valuable in COVID-19. We aimed to evaluate the impact of short-term IFN on incident thyroid dysfunction and autoimmunity among COVID-19 survivors. METHODS We included consecutive adults without known thyroid disorder admitted to Queen Mary Hospital for COVID-19 from July 2020 to January 2021 who had thyroid function tests (TFTs) and anti-thyroid antibodies measured both on admission and at three months. RESULTS 226 patients were included (median age 55.0 years; 49.6% men): 135 were IFN-treated. There tended to be more abnormal TFTs upon reassessment in IFN-treated patients (8.1% vs 2.2%, p=0.080). 179 patients (65.4% IFN-treated) had a complete reassessment of anti-thyroid antibodies. There were significant increases in titres of both anti-thyroid peroxidase antibodies (anti-TPO: baseline 29.21 units [IQR: 14.97 - 67.14] vs reassessment 34.30 units [IQR: 18.82 - 94.65], p<0.001) and anti-thyroglobulin antibodies (anti-Tg: baseline 8.23 units [IQR: 5.40 - 18.44] vs reassessment 9.14 units [IQR: 6.83 - 17.17], p=0.001) in the IFN-treated group but not IFN-naïve group. IFN treatment (standardised beta 0.245, p=0.001) was independently associated with changes in anti-TPO titre. Of the 143 patients negative for anti-TPO at baseline, 8 became anti-TPO positive upon reassessment (seven IFN-treated; one IFN-naïve). Incident anti-TPO positivity was more likely to be associated with abnormal TFTs upon reassessment (phi 0.188, p=0.025). CONCLUSION IFN for COVID-19 was associated with modest increases in anti-thyroid antibody titres, and a trend of more incident anti-TPO positivity and abnormal TFTs during convalescence. Our findings suggest that clinicians monitor the thyroid function and anti-thyroid antibodies among IFN-treated COVID-19 survivors, and call for further follow-up studies regarding the clinical significance of these changes.
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Affiliation(s)
- David Tak Wai Lui
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
| | - Ivan Fan Ngai Hung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
| | - Chi Ho Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
| | - Alan Chun Hong Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
| | - Anthony Raymond Tam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
| | - Polly Pang
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
| | - Tip Yin Ho
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
| | - Chloe Yu Yan Cheung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
| | - Carol Ho Yi Fong
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
| | - Chun Yiu Law
- Division of Chemical Pathology, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
| | - Kelvin Kai Wang To
- Department of Microbiology, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
| | - Ching Wan Lam
- Department of Pathology, The University of Hong Kong, Hong Kong, Hong Kong, SAR China
| | - Wing Sun Chow
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
| | - Yu Cho Woo
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
| | - Karen Siu Ling Lam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
| | - Kathryn Choon Beng Tan
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong, SAR China
- *Correspondence: Kathryn Choon Beng Tan,
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Lui DTW, Lee CH, Chan YH, Chow WS, Fong CHY, Siu DCW, Tse HF, Woo YC, Lam KSL. HbA1c variability, in addition to mean HbA1c, predicts incident hip fractures in Chinese people with type 2 diabetes. Osteoporos Int 2020; 31:1955-1964. [PMID: 32385660 DOI: 10.1007/s00198-020-05395-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 03/17/2020] [Indexed: 12/28/2022]
Abstract
UNLABELLED Type 2 diabetes is associated with an increased risk of hip fractures. We hypothesize that long-term glycemic variability predicts incident hip fractures. We demonstrated that HbA1c variability predicted incident hip fractures independent of mean HbA1c, suggesting the potential benefits of minimizing glycemic variability in addition to optimizing mean glycemia for bone health. INTRODUCTION Type 2 diabetes is associated with an increased risk of hip fractures, and a linear relationship between HbA1c levels and hip fracture incidence has been observed. We hypothesize that HbA1c variability also predicts incident hip fractures in type 2 diabetes. METHODS Chinese individuals with type 2 diabetes aged ≥ 60 years were identified from electronic health records in Hong Kong between 2008 and 2012 and observed for incident hip fractures. Hip fracture was defined by the International Classification of Diseases (Ninth Revision) code 820. HbA1c variability was determined using standard deviation, adjusted standard deviation, and coefficient of variation of HbA1c measurements in the 5 years preceding the entry date. Multivariable Cox regression analysis was used to evaluate associations between HbA1c variability and incident hip fractures. RESULTS A total of 83,282 participants were included. Their mean age was 71.3 ± 7.5 years, duration of diabetes 11.7 ± 7.7 years, baseline HbA1c 56.6 ± 13.5 mmol/mol (7.33 ± 1.23%), and median follow-up 6.8 years. All indices of HbA1c variability were significant independent predictors of incident hip fractures, with an adjusted hazard ratio of up to 1.29 (all p < 0.001), and remained to be independent predictors across groups of different intensity of glycemic control. Mean HbA1c ≥ 64 mmol/mol (8.0%) was associated with a 25% increase in incident hip fractures compared with mean HbA1c < 53 mmol/mol (7.0%). CONCLUSION HbA1c variability is an independent positive predictor of hip fracture in type 2 diabetes, across the spectrum of varying degree of glycemic control, while a high HbA1c is also not advisable from the perspective of bone health.
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Affiliation(s)
- D T W Lui
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China
| | - C H Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong SAR, China
| | - Y H Chan
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China
| | - W S Chow
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China
| | - C H Y Fong
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China
| | - D C W Siu
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China
| | - H F Tse
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China
| | - Y C Woo
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China.
| | - K S L Lam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China.
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong SAR, China.
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Lui DTW, Lee CH, Chow WS, Fong CHY, Woo YC, Lam KSL, Tan KCB. A territory-wide study on the impact of COVID-19 on diabetes-related acute care. J Diabetes Investig 2020; 11:1303-1306. [PMID: 32779868 PMCID: PMC7404850 DOI: 10.1111/jdi.13368] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 05/30/2020] [Revised: 06/22/2020] [Accepted: 07/15/2020] [Indexed: 12/20/2022] Open
Abstract
Diabetes is a risk factor for the severity of coronavirus disease 2019 (COVID-19). Little is known how the COVID-19 pandemic has disrupted diabetes-related acute care. We compared hospitalization rates for severe hyperglycemia or hypoglycemia during the COVID-19 outbreak in Hong Kong (study period: 25 January to 24 April 2020) with those during 25 January to 24 April 2019 (inter-year control) and 25 October 2019 to 24 January 2020 (intra-year control), using Poisson regression analysis. Hospitalization rates abruptly decreased after the first confirmed local COVID-19 case on 23 January 2020, by 27% and 23% compared with the inter-year and intra-year control periods, respectively (incidence rate ratio 0.73 and 0.77, P < 0.001). Hospitalizations were reduced for severe hyperglycemia and hypoglycemia, but not diabetic ketoacidosis. This significant reduction in hospitalization rates should alert endocrinologists to take proactive measures to optimize glycemic control of individuals with diabetes.
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Affiliation(s)
- David Tak Wai Lui
- Department of MedicineQueen Mary HospitalThe University of Hong KongHong Kong
| | - Chi Ho Lee
- Department of MedicineQueen Mary HospitalThe University of Hong KongHong Kong
| | - Wing Sun Chow
- Department of MedicineQueen Mary HospitalThe University of Hong KongHong Kong
| | - Carol Ho Yi Fong
- Department of MedicineQueen Mary HospitalThe University of Hong KongHong Kong
| | - Yu Cho Woo
- Department of MedicineQueen Mary HospitalThe University of Hong KongHong Kong
| | - Karen Siu Ling Lam
- Department of MedicineQueen Mary HospitalThe University of Hong KongHong Kong
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21
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Lee CH, Lui DTW, Cheung CYY, Fong CHY, Yuen MMA, Chow WS, Woo YC, Xu A, Lam KSL. Response to Letter to the Editor: "Higher Circulating Adiponectin Concentrations Predict Incident Cancer in Type 2 Diabetes - The Adiponectin Paradox". J Clin Endocrinol Metab 2020; 105:5863385. [PMID: 32589739 DOI: 10.1210/clinem/dgaa386] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 06/22/2020] [Indexed: 01/01/2023]
Affiliation(s)
- Chi Ho Lee
- Department of Medicine, University of Hong Kong, Hong Kong SAR
- Research Center of Heart, Brain, Hormone and Healthy Aging, University of Hong Kong, Hong Kong SAR
- State Key Laboratory of Pharmaceutical Biotechnology, University of Hong Kong, Hong Kong SAR
| | - David T W Lui
- Department of Medicine, University of Hong Kong, Hong Kong SAR
| | | | - Carol H Y Fong
- Department of Medicine, University of Hong Kong, Hong Kong SAR
| | | | - Wing Sun Chow
- Department of Medicine, University of Hong Kong, Hong Kong SAR
| | - Yu Cho Woo
- Department of Medicine, University of Hong Kong, Hong Kong SAR
| | - Aimin Xu
- Department of Medicine, University of Hong Kong, Hong Kong SAR
- Research Center of Heart, Brain, Hormone and Healthy Aging, University of Hong Kong, Hong Kong SAR
- State Key Laboratory of Pharmaceutical Biotechnology, University of Hong Kong, Hong Kong SAR
| | - Karen S L Lam
- Department of Medicine, University of Hong Kong, Hong Kong SAR
- Research Center of Heart, Brain, Hormone and Healthy Aging, University of Hong Kong, Hong Kong SAR
- State Key Laboratory of Pharmaceutical Biotechnology, University of Hong Kong, Hong Kong SAR
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Chau ACM, Cheung EYW, Chan KH, Chow WS, Shea YF, Chiu PKC, Mak HKF. Impaired cerebral blood flow in type 2 diabetes mellitus - A comparative study with subjective cognitive decline, vascular dementia and Alzheimer's disease subjects. Neuroimage Clin 2020; 27:102302. [PMID: 32521474 PMCID: PMC7284123 DOI: 10.1016/j.nicl.2020.102302] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 04/27/2020] [Accepted: 05/25/2020] [Indexed: 12/21/2022]
Abstract
CBF impairment is found in T2DM and SCD individuals, which might suggest a preclinical stage of dementia. Comparing to HC, lower CBF in T2DM was due to higher rate of multiple cerebrovascular risk factors. Unlike T2DM, CBF reduction in AD and VD was due to amyloid deposition and microangiopathy respectively. Significant negative correlation between adjusted CBF and HbA1c in all cortical regions in healthy control and T2DM.
The link between non-demented type 2 diabetes mellitus (T2DM) and different types of cognitive impairment is controversial. By controlling for co-morbidities such as cerebral macrovascular and microvascular changes, cerebral atrophy, amyloid burden, hypertension or hyperlipidemia, the current study investigated the cerebral blood flow of T2DM individuals as compared to cognitively impaired subjects recruited from a memory clinic. 15 healthy control (71.8 ± 6.1 years), 18 T2DM (62.5 ± 3.7 years), as well as 8 Subjective Cognitive Decline (69.5 ± 7.5 years), 12 Vascular Dementia (79.3 ± 4.2 years) and 17 Alzheimer’s Disease (75.1 ± 8.2 years) underwent multi-parametric MRI brain scanning. Subjects with T2DM and from the memory clinic also had 18-F Flutametamol PET-CT scanning to look for any amyloid burden. Pseudocontinuous Arterial Spin Labeling (PCASL), MR Angiography Head, 3D FLAIR and 3D T1-weighted sequences were used to quantify cerebral blood flow, cerebrovascular changes, white matter hyperintensities and brain atrophy respectively. Vascular risk factors were retrieved from the medical records. The 37 subjects from memory clinic were classified into subjective cognitive decline (SCD), vascular dementia (VD) and Alzheimer’s disease (AD) subgroups by a multi-disciplinary panel consisting of a neuroradiologist, and 2 geriatricians. Absolute cortical CBF in our cohort of T2DM, SCD, VD and AD was significantly decreased (p < 0.01) as compared to healthy controls (HC) in both whole brain and eight paired brain regions, after age, normalized grey matter volume and gender adjustment and Bonferroni correction. Subgroup analysis between T2DM, SCD, VD, and AD revealed that CBF of T2DM was not significantly different from AD, VD or SCD. By controlling for co-morbidities, impaired cortical CBF in T2DM was not related to microangiopathy or amyloid deposition, but to the interaction of triple risk factors (such as diabetes mellitus, hypertension, and hyperlipidemia). There was statistically significant negative correlation (p ≤ 0.05) between adjusted CBF and HbA1c in all brain regions of T2DM and HC (with partial correlation ranging from −0.30 to −0.46). Taken together, altered cerebral blood flow in T2DM might be related to disruption of cerebrovascular autoregulation related to vascular risk factors, and such oligemia occurred before clinical manifestation due to altered glycemic control.
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Affiliation(s)
- Anson C M Chau
- The University of Hong Kong (Shenzhen) Teaching Hospital Limited, The University of Hong Kong, Pokfulam Road, Hong Kong.
| | - Eva Y W Cheung
- Department of Diagnostic Radiology, LKS Faculty of Medicine, The University of Hong Kong, K406, Queen Mary Hospital, Pokfulam Road, Hong Kong
| | - K H Chan
- Department of Medicine, LKS Faculty of Medicine, The University of Hong Kong, 405B, Professorial Block, Queen Mary Hospital, Pokfulam Road, Hong Kong.
| | - W S Chow
- Department of Medicine, LKS Faculty of Medicine, The University of Hong Kong, 405B, Professorial Block, Queen Mary Hospital, Pokfulam Road, Hong Kong.
| | - Y F Shea
- Department of Medicine, LKS Faculty of Medicine, The University of Hong Kong, 405B, Professorial Block, Queen Mary Hospital, Pokfulam Road, Hong Kong
| | - Patrick K C Chiu
- Department of Medicine, LKS Faculty of Medicine, The University of Hong Kong, 405B, Professorial Block, Queen Mary Hospital, Pokfulam Road, Hong Kong
| | - Henry K F Mak
- Department of Diagnostic Radiology, LKS Faculty of Medicine, The University of Hong Kong, K406, Queen Mary Hospital, Pokfulam Road, Hong Kong; State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong; Alzheimer's Disease Research Network, The University of Hong Kong, Hong Kong.
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Lui DTW, Lee CH, Chau VWK, Fong CHY, Yeung KMY, Lam JKY, Lee ACH, Chow WS, Tan KCB, Woo YC, Lam KSL. SUN-372 Deterioration of Bone Microarchitecture in Prediabetes Is Partly Mediated Through Fibroblast Growth Factor 21. J Endocr Soc 2020. [PMCID: PMC7208010 DOI: 10.1210/jendso/bvaa046.1028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Introduction: Prediabetes has been reported to be associated with a worse trabecular bone score (TBS). Fibroblast growth factor 21 (FGF21) levels are raised in prediabetes and other insulin-resistant states, and FGF21 has been reported to be implicated in bone metabolism. We compared the bone mineral density (BMD) and TBS between prediabetes and normoglycemia, and studied the correlation of FGF21 with BMD and TBS. Method: Chinese postmenopausal women aged between 55 and 80 and without type 2 diabetes were recruited from the Hong Kong Cardiovascular Risk Factor Prevalence Study between November 2016 and October 2018. Participants were excluded if they were already on anti-osteoporosis therapy, had secondary causes of osteoporosis, had body mass index (BMI) <15 or >37 kg/m2 (when TBS measurement may not be accurate), or had an estimated glomerular filtration rate (eGFR) <30mL/min. They were divided into prediabetes (defined by fasting glucose ≥5.6mmol/L or HbA1c ≥5.7%) and normoglycemia. BMD and TBS were measured by dual-energy X-ray absorptiometry. Serum FGF21 levels were measured with an in-house ELISA kit. Results: 258 participants were included (130 prediabetes and 128 normoglycemia), with a mean age of 61.5±5.1years and mean BMI of 24.2±3.7kg/m2. BMD over lumbar spine, femoral neck and total hip were all comparable between prediabetes and normoglycaemia, while TBS was lower in prediabetes (1.27±0.07 vs 1.30±0.07, p=0.007), which remained significant after adjustment for age and BMI. Serum FGF21 levels did not correlate with BMD but inversely correlated with TBS. On multiple linear regression models, serum FGF21 levels showed an independent inverse correlation with TBS (standardized beta -0.13, p=0.031), which remained significant with the inclusion of homeostasis model assessment of insulin resistance (HOMA-IR) in the model. Conclusion: Among Chinese postmenopausal women, bone quality was worse in prediabetes despite comparable bone density. Serum FGF21 levels showed a significant independent correlation with TBS, suggesting the potential impact of FGF21 on the deterioration of the bone microarchitecture in prediabetes.
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Affiliation(s)
- David T W Lui
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Chi Ho Lee
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Vicky W K Chau
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Carol H Y Fong
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Kristy M Y Yeung
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Joanne K Y Lam
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Alan C H Lee
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Wing Sun Chow
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Kathryn C B Tan
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Yu Cho Woo
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
| | - Karen S L Lam
- The University of Hong Kong, Queen Mary Hospital, Hong Kong, Hong Kong
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Koo HC, Kaur S, Chan KQ, Soh WH, Ang YL, Chow WS, Hew MK, Wong SY, Yap MP. Whole-grain intake and its inverse relationships with fatty acids intake among multiethnic Malaysian schoolchildren. J Hum Nutr Diet 2020; 33:670-677. [PMID: 32250007 DOI: 10.1111/jhn.12753] [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] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Little is known about the relationship of whole-grain intake with dietary fatty acids intake. The present study aimed to assess the whole-grain intake and its relationships with dietary fatty acids intake among multiethnic schoolchildren in Kuala Lumpur, Malaysia. METHODS This cross-sectional study was conducted among 392 schoolchildren aged 9-11 years, cluster sampled from five randomly selected schools in Kuala Lumpur. Whole-grain and fatty acids intakes were assessed by 3-day, 24-h diet recalls. All whole-grain foods were considered irrespective of the amount of whole grain they contained. RESULTS In total, 55.6% (n = 218) were whole-grain consumers. Mean (SD) daily intake of whole grain in the total sample was 5.13 (9.75) g day-1 . In the whole-grain consumer's only sample, mean (SD) intakes reached 9.23 (11.55) g day-1 . Significant inverse associations were found between whole-grain intake and saturated fatty acid (SAFA) intake (r = -0.357; P < 0.001), monosaturated fatty acid (MUFA) (r = -0.373; P < 0.001) and polyunsaturated fatty acid (PUFA) (r = -0.307; P < 0.001) intake. Furthermore, whole-grain intake was a significant predictor of SAFA (β = -0.077; P = 0.004), MUFA (β = -0.112; P = <0.001) and PUFA (β = -0.202; P = <0.001) intakes, after controlling for sex, age and ethnicity. CONCLUSIONS Whole-grain intake in Malaysia was well below recommendations. Schoolchildren who consumed higher whole grain tend to reduce fat intake; however, it would also reduce the SAFA, MUFA and PUFA intakes. Future collaboration may be conducted between industry, government and universities to promote unsaturated fatty acids-rich foods and whole-grain food, although not to promote processed whole-grain foods with a high sugar and salt content.
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Affiliation(s)
- H C Koo
- Faculty of Applied Sciences, Tunku Abdul Rahman University College, Kuala Lumpur, Malaysia
| | - S Kaur
- Faculty of Applied Sciences, UCSI University, Kuala Lumpur, Malaysia
| | - K Q Chan
- Faculty of Applied Sciences, Tunku Abdul Rahman University College, Kuala Lumpur, Malaysia
| | - W H Soh
- Faculty of Applied Sciences, Tunku Abdul Rahman University College, Kuala Lumpur, Malaysia
| | - Y L Ang
- Faculty of Applied Sciences, Tunku Abdul Rahman University College, Kuala Lumpur, Malaysia
| | - W S Chow
- Faculty of Applied Sciences, Tunku Abdul Rahman University College, Kuala Lumpur, Malaysia
| | - M K Hew
- Faculty of Applied Sciences, Tunku Abdul Rahman University College, Kuala Lumpur, Malaysia
| | - S Y Wong
- Faculty of Applied Sciences, Tunku Abdul Rahman University College, Kuala Lumpur, Malaysia
| | - M P Yap
- Faculty of Applied Sciences, Tunku Abdul Rahman University College, Kuala Lumpur, Malaysia
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Lee CH, Lui DTW, Cheung CYY, Fong CHY, Yuen MMA, Chow WS, Woo YC, Xu A, Lam KSL. Higher Circulating Adiponectin Concentrations Predict Incident Cancer in Type 2 Diabetes - The Adiponectin Paradox. J Clin Endocrinol Metab 2020; 105:5740218. [PMID: 32072163 DOI: 10.1210/clinem/dgaa075] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 02/18/2020] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Despite the beneficial cardiometabolic effects of adiponectin demonstrated in preclinical studies, paradoxically higher circulating adiponectin concentrations have been found in epidemiological studies to be associated with incident cardiovascular events, renal outcomes, and mortality in patients with diabetes. On the other hand, diabetes is also associated with an increased risk of cancer. Here, we investigated prospectively the association between circulating adiponectin concentrations and incident cancer using a cohort of exclusively individuals with type 2 diabetes. MATERIALS AND METHODS Baseline serum adiponectin concentrations were measured in 5658 participants recruited from the Hong Kong West Diabetes Registry. The associations of circulating adiponectin concentrations with incident cancer and cancer-related deaths were evaluated using multivariable Cox regression analysis, with hazard ratio (HR) for adiponectin referring to the respective risk per doubling of serum adiponectin concentration. RESULTS Over a median-follow up of 6.5 years, 7.53% and 3% of participants developed cancer and had cancer-related deaths, respectively. Serum adiponectin concentrations were significantly higher in those who had incident cancer (9.8 μg/mL vs 9.1 μg/mL, P < 0.001) and cancer-related deaths (11.5 μg/mL vs 9.3 μg/mL, P < 0.001) compared with those without. Moreover, in multivariable analyses, serum adiponectin concentration was independently associated with both incident cancer (hazard ratio, 1.19; 95% confidence interval, 1.05-1.35; P = 0.006) and cancer-related deaths (hazard ratio, 1.23; 95% confidence interval, 1.03-1.47; P = 0.024). CONCLUSIONS Higher serum adiponectin concentration was independently associated with incident cancer and cancer-related deaths in type 2 diabetes, indicating that adiponectin paradox can be observed in another major diabetic complication in addition to cardiovascular and kidney diseases.
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Affiliation(s)
- Chi Ho Lee
- Department of Medicine, University of Hong Kong, Hong Kong SAR
- Research Center of Heart, Brain, Hormone and Healthy Aging, University of Hong Kong, Hong Kong SAR
- State Key Laboratory of Pharmaceutical Biotechnology, University of Hong Kong, Hong Kong SAR
| | - David T W Lui
- Department of Medicine, University of Hong Kong, Hong Kong SAR
| | | | - Carol H Y Fong
- Department of Medicine, University of Hong Kong, Hong Kong SAR
| | | | - Wing Sun Chow
- Department of Medicine, University of Hong Kong, Hong Kong SAR
| | - Yu Cho Woo
- Department of Medicine, University of Hong Kong, Hong Kong SAR
| | - Aimin Xu
- Department of Medicine, University of Hong Kong, Hong Kong SAR
- Research Center of Heart, Brain, Hormone and Healthy Aging, University of Hong Kong, Hong Kong SAR
- State Key Laboratory of Pharmaceutical Biotechnology, University of Hong Kong, Hong Kong SAR
| | - Karen S L Lam
- Department of Medicine, University of Hong Kong, Hong Kong SAR
- Research Center of Heart, Brain, Hormone and Healthy Aging, University of Hong Kong, Hong Kong SAR
- State Key Laboratory of Pharmaceutical Biotechnology, University of Hong Kong, Hong Kong SAR
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Tan K, Chow WS, Leung J, Ho A, Ozaki R, Kam G, Li J, Choi CH, Tsang MW, Chan N, Lee KK, Chan KW. Clinical considerations when adding a sodium-glucose co-transporter-2 inhibitor to insulin therapy in patients with diabetes mellitus. Hong Kong Med J 2019; 25:312-319. [PMID: 31416990 DOI: 10.12809/hkmj197802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- K Tan
- Department of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - W S Chow
- Department of Medicine, Queen Mary Hospital, Pokfulam, Hong Kong
| | - J Leung
- Department of Integrated Medical Service, Ruttonjee and Tang Shiu Kin Hospitals, Hong Kong
| | - A Ho
- Department of Medicine and Geriatrics, Tuen Mun Hospital, Tuen Mun, Hong Kong
| | - R Ozaki
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - G Kam
- Department of Medicine and Geriatrics, United Christian Hospital, Kwun Tong, Hong Kong
| | - J Li
- Department of Medicine, Yan Chai Hospital, Tsuen Wan, Hong Kong
| | - C H Choi
- Department of Medicine, Queen Elizabeth Hospital, Jordan, Hong Kong
| | - M W Tsang
- Specialist in Endocrinology, Private Practice
| | - N Chan
- Specialist in Endocrinology, Private Practice
| | - K K Lee
- Department of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - K W Chan
- Department of Medicine and Geriatrics, Princess Margaret Hospital, Laichikok, Hong Kong
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Lee CH, Cheung CYY, Woo YC, Lui DTW, Yuen MMA, Fong CHY, Chow WS, Xu A, Lam KSL. Prospective associations of circulating adipocyte fatty acid-binding protein levels with risks of renal outcomes and mortality in type 2 diabetes. Diabetologia 2019; 62:169-177. [PMID: 30267180 DOI: 10.1007/s00125-018-4742-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 09/05/2018] [Indexed: 11/25/2022]
Abstract
AIMS/HYPOTHESIS Elevated circulating adipocyte fatty acid-binding protein (AFABP) levels have been found to correlate with diabetic nephropathy staging in cross-sectional studies. However, it remains unclear whether these higher serum levels reflect a role of AFABP in the development of diabetic kidney disease (DKD), or simply result from its impaired renal clearance in DKD. Here we investigated prospectively the prognostic importance of serum AFABP level in the development of adverse renal outcomes in a large clinic-based cohort of participants with type 2 diabetes. METHODS Baseline serum AFABP levels were measured in 5454 Chinese participants from the Hong Kong West Diabetes Registry. The association between circulating AFABP levels and incident adverse renal outcomes-defined as a composite endpoint of a sustained 40% decline in eGFR, end-stage renal disease requiring renal replacement therapy or kidney transplantation, or renal deaths-was evaluated using multivariable Cox regression analysis. RESULTS Over a median follow-up of 5 years, 754 of the 5454 participants developed incident adverse renal outcomes. Elevated circulating AFABP levels were independently associated with incident adverse renal outcomes (HR 1.43, 95% CI 1.31, 1.57, p < 0.001) after adjustments for conventional risk factors for DKD progression. Importantly, the prognostic role of serum AFABP was independent of the baseline albuminuria status or eGFR levels of the study participants. CONCLUSIONS/INTERPRETATION Circulating AFABP levels were predictive of incident adverse renal outcomes, even in participants with relatively well-preserved kidney function at baseline, suggesting its potential to be a useful marker for early risk stratification in DKD.
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Affiliation(s)
- Chi Ho Lee
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Hong Kong, SAR, People's Republic of China
- Research Center of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong, Hong Kong, SAR, People's Republic of China
| | - Chloe Y Y Cheung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Hong Kong, SAR, People's Republic of China
| | - Yu Cho Woo
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Hong Kong, SAR, People's Republic of China
| | - David T W Lui
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Hong Kong, SAR, People's Republic of China
| | - Michele M A Yuen
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Hong Kong, SAR, People's Republic of China
| | - Carol H Y Fong
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Hong Kong, SAR, People's Republic of China
| | - Wing Sun Chow
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Hong Kong, SAR, People's Republic of China
| | - Amin Xu
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Hong Kong, SAR, People's Republic of China
- Research Center of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong, Hong Kong, SAR, People's Republic of China
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, SAR, People's Republic of China
| | - Karen S L Lam
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Hong Kong, SAR, People's Republic of China.
- Research Center of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong, Hong Kong, SAR, People's Republic of China.
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, SAR, People's Republic of China.
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Lee CH, Cheung CYY, Woo YC, Lui DTW, Yuen MMA, Fong CHY, Chow WS, Xu A, Lam KSL. Circulating Adipocyte Fatty Acid–Binding Protein Concentrations Predict Multiple Mortality Outcomes among Men and Women with Diabetes. Clin Chem 2018; 64:1496-1504. [DOI: 10.1373/clinchem.2018.289157] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 06/15/2018] [Indexed: 01/07/2023]
Abstract
AbstractINTRODUCTIONRaised circulating adipocyte fatty acid–binding protein (AFABP) concentrations are associated with various adverse health conditions. However, their relationship with mortality remains to be defined, especially in view of the sexual dimorphism of circulating AFABP concentrations. Here we investigated prospectively whether serum AFABP concentrations predict multiple mortality outcomes in men and women alike, using a large clinic-based cohort of individuals with type 2 diabetes, a condition with raised AFABP concentrations.METHODSBaseline serum AFABP concentrations were measured in 5305 research participants with a monoclonal antibody-based sandwich immunoassay. The role of circulating AFABP concentrations in predicting mortality outcomes was evaluated by multivariable Cox regression analysis.RESULTSAmong the 5305 participants (59% men) in this study, over a median follow-up of 5 years, there were 512 deaths (19.3 deaths per 1000 person-years). Circulating AFABP concentrations, with higher levels in women at baseline, predicted all-cause mortality (P < 0.001), cardiovascular mortality (P = 0.037), and infection-related deaths (P < 0.002) among all participants. In sex-specific analyses, circulating AFABP concentration was an independent predictor of all-cause mortality in both men and women and a predictor of cancer-related deaths and infection-related deaths in men only. Furthermore, the addition of serum AFABP concentrations improved the time-dependent c statistics in predicting all-cause mortality in participants with type 2 diabetes (P = 0.008).CONCLUSIONSCirculating AFABP concentration was an independent predictor of various mortality outcomes in type 2 diabetes over and above known risk factors of reduced survival in men and women. The role of AFABP as a prognostic biomarker and therapeutic target warrants further investigation.
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Affiliation(s)
- Chi Ho Lee
- Department of Medicine
- Research Center of Heart, Brain, Hormone, and Healthy Aging and
| | | | | | | | | | | | | | - Aimin Xu
- Department of Medicine
- Research Center of Heart, Brain, Hormone, and Healthy Aging and
- State Key Laboratory of Pharmaceutical Biotechnology, University of Hong Kong, Hong Kong SAR, China
| | - Karen S L Lam
- Department of Medicine
- Research Center of Heart, Brain, Hormone, and Healthy Aging and
- State Key Laboratory of Pharmaceutical Biotechnology, University of Hong Kong, Hong Kong SAR, China
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Yao H, Zhang Y, Yi X, Zhang X, Fan D, Chow WS, Zhang W. Diaheliotropic leaf movement enhances leaf photosynthetic capacity and photosynthetic light and nitrogen use efficiency via optimising nitrogen partitioning among photosynthetic components in cotton (Gossypium hirsutum L.). Plant Biol (Stuttg) 2018; 20:213-222. [PMID: 29222927 DOI: 10.1111/plb.12678] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 12/01/2017] [Indexed: 06/07/2023]
Abstract
Phototropic leaf movement of plants is an effective mechanism for adapting to light conditions. Light is the major driver of plant photosynthesis. Leaf N is also an important limiting factor on leaf photosynthetic potential. Cotton (Gossypium hirsutum L.) exhibits diaheliotropic leaf movement. Here, we compared the long-term photosynthetic acclimation of fixed leaves (restrained) and free leaves (allowed free movement) in cotton. The fixed leaves and free leaves were used for determination of PAR, leaf chlorophyll concentration, leaf N content and leaf gas exchange. The measurements were conducted under clear sky conditions at 0, 7, 15 and 30 days after treatment (DAT). The results showed that leaf N allocation and partitioning among different components of the photosynthetic apparatus were significantly affected by diaheliotropic leaf movement. Diaheliotropic leaf movement significantly increased light interception per unit leaf area, which in turn affected leaf mass per area (LMA), leaf N content (NA ) and leaf N allocation to photosynthesis (NP ). In addition, cotton leaves optimised leaf N allocation to the photosynthetic apparatus by adjusting leaf mass per area and NA in response to optimal light interception. In the presence of diaheliotropic leaf movement, cotton leaves optimised their structural tissue and photosynthetic characteristics, such as LMA, NA and leaf N allocation to photosynthesis, so that leaf photosynthetic capacity was maximised to improve the photosynthetic use efficiency of light and N under high light conditions.
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Affiliation(s)
- H Yao
- The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang, China
- Division of Plant Sciences, Research School of Biology, The Australian National University, Acton, Australia
| | - Y Zhang
- The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang, China
| | - X Yi
- The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang, China
| | - X Zhang
- The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang, China
| | - D Fan
- Division of Plant Sciences, Research School of Biology, The Australian National University, Acton, Australia
| | - W S Chow
- Division of Plant Sciences, Research School of Biology, The Australian National University, Acton, Australia
| | - W Zhang
- The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang, China
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Lee PCH, Gu Y, Yeung MY, Fong CHY, Woo YC, Chow WS, Tan K, Lam KSL. Dapagliflozin and Empagliflozin Ameliorate Hepatic Dysfunction Among Chinese Subjects with Diabetes in Part Through Glycemic Improvement: A Single-Center, Retrospective, Observational Study. Diabetes Ther 2018; 9:285-295. [PMID: 29322486 PMCID: PMC5801241 DOI: 10.1007/s13300-017-0355-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [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: 11/01/2017] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION Sodium-glucose co-transporter 2 inhibitors (SGLT2i) improve hepatic dysfunction, although studies focusing on their underlying mechanisms are lacking, especially ones on dapagliflozin and empagliflozin. Here, we investigated the relationship between amelioration of hepatic dysfunction and improvement in various metabolic parameters among Chinese subjects with type 2 diabetes (T2DM). METHODS This was a single-center, retrospective, observational study that involved 115 Chinese participants with T2DM treated with either dapagliflozin or empagliflozin for at least 6 months between July 2016 and February 2017. RESULTS Of the 115 participants included in this study, 69 received dapagliflozin and 46 received empagliflozin. After 6 months of treatment, all patients showed significant improvements in body weight (BW), systolic blood pressure (SBP) and fasting glucose (FG) and glycated hemoglobin (HbA1c) levels. All participants also showed a significant reduction in serum alanine aminotransferase (ALT) levels, from 40.3 ± 28.0 to 29.0 ± 14.1 U/L (p < 0.001). Pearson's correlation analysis revealed a positive correlation between the reduction in ALT levels after treatment with the respective SGLT2i and changes in FG (p = 0.014) and HbA1c (p = 0.043) levels over 6 months, but not with changes in BW and SBP. Multiple linear regression analysis revealed that the reduction in serum ALT levels was independently associated with changes in both HbA1c and FG but not with the changes in the other clinical variables, including BW. CONCLUSIONS Dapagliflozin and empagliflozin improved both metabolic and hepatic dysfunction as a class effect. The amelioration of hepatic dysfunction was mediated partly through an alleviation of hyperglycemia and possibly through an improvement in insulin resistance, independent of BW.
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Affiliation(s)
- Paul Chi Ho Lee
- Department of Medicine, University of Hong Kong, Hong Kong, SAR, China
- Research Centre of Heart, Brain, Hormone and Healthy Aging, University of Hong Kong, Hong Kong, SAR, China
| | - Yunjuan Gu
- Department of Endocrinology and Metabolism, Affiliated Hospital of Nantong University, Nantong, China
| | - Man Yi Yeung
- Department of Medicine, University of Hong Kong, Hong Kong, SAR, China
| | - Carol Ho Yi Fong
- Department of Medicine, University of Hong Kong, Hong Kong, SAR, China
| | - Yu Cho Woo
- Department of Medicine, University of Hong Kong, Hong Kong, SAR, China
| | - Wing Sun Chow
- Department of Medicine, University of Hong Kong, Hong Kong, SAR, China
| | - Kathryn Tan
- Department of Medicine, University of Hong Kong, Hong Kong, SAR, China
- Research Centre of Heart, Brain, Hormone and Healthy Aging, University of Hong Kong, Hong Kong, SAR, China
| | - Karen Siu Ling Lam
- Department of Medicine, University of Hong Kong, Hong Kong, SAR, China.
- Research Centre of Heart, Brain, Hormone and Healthy Aging, University of Hong Kong, Hong Kong, SAR, China.
- State Key Laboratory of Pharmaceutical Biotechnology, University of Hong Kong, Hong Kong, SAR, China.
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Lee CH, Woo YC, Chow WS, Cheung CYY, Fong CHY, Yuen MMA, Xu A, Tse HF, Lam KSL. Role of Circulating Fibroblast Growth Factor 21 Measurement in Primary Prevention of Coronary Heart Disease Among Chinese Patients With Type 2 Diabetes Mellitus. J Am Heart Assoc 2017; 6:JAHA.116.005344. [PMID: 28588089 PMCID: PMC5669163 DOI: 10.1161/jaha.116.005344] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND Fibroblast growth factor 21 (FGF21) has demonstrated beneficial effects on lipid and carbohydrate metabolism. In cross-sectional studies, an association of raised circulating FGF21 levels with coronary heart disease (CHD) was found in some but not all studies. Here we investigated prospectively whether baseline serum FGF21 levels could predict incident CHD in subjects with type 2 diabetes mellitus and no known cardiovascular diseases. METHODS AND RESULTS Baseline serum FGF21 levels were measured in 3528 Chinese subjects with type 2 diabetes mellitus recruited from the Hong Kong West Diabetes Registry. The role of baseline serum FGF21 levels in predicting incident CHD over a median follow-up of 3.8 years was analyzed using Cox regression analysis. Among 3528 recruited subjects without known cardiovascular diseases, 147 (4.2%) developed CHD over a mean follow-up of 4 years. Baseline serum log-transformed FGF21 levels were significantly higher in those who had incident CHD than those who did not (222.7 pg/mL [92.8-438.4] versus 151.1 pg/mL [75.6-274.6]; P<0.001). On multivariable Cox regression analysis, baseline serum FGF21 levels, using an optimal cutoff of 206.22 pg/mL derived from our study, independently predicted incident CHD (hazard ratio, 1.55; 95% CI, 1.10-2.19; P=0.013) and significantly improved net reclassification index and integrated discrimination improvement after adjustment for conventional cardiovascular risk factors. CONCLUSIONS We have demonstrated, for the first time, that serum FGF21 level is an independent predictor of incident CHD and might be usefully utilized as a biomarker for identifying type 2 diabetes mellitus subjects with raised CHD risk, for primary prevention.
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Affiliation(s)
- Chi Ho Lee
- Department of Medicine, The University of Hong Kong, China.,Research Centre of Heart, Brain, Hormone and Aging, The University of Hong Kong, China
| | - Yu Cho Woo
- Department of Medicine, The University of Hong Kong, China
| | - Wing Sun Chow
- Department of Medicine, The University of Hong Kong, China
| | | | | | | | - Aimin Xu
- Department of Medicine, The University of Hong Kong, China.,Research Centre of Heart, Brain, Hormone and Aging, The University of Hong Kong, China.,State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, China
| | - Hung Fat Tse
- Department of Medicine, The University of Hong Kong, China .,Research Centre of Heart, Brain, Hormone and Aging, The University of Hong Kong, China.,State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, China
| | - Karen Siu Ling Lam
- Department of Medicine, The University of Hong Kong, China .,Research Centre of Heart, Brain, Hormone and Aging, The University of Hong Kong, China.,State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, China
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Lee CH, Shih AZL, Woo YC, Fong CHY, Yuen MMA, Chow WS, Lam KSL. Which creatinine-based estimated glomerular filtration rate equation best predicts all-cause mortality in Chinese subjects with type 2 diabetes? Diabetes Res Clin Pract 2017; 126:25-29. [PMID: 28189951 DOI: 10.1016/j.diabres.2017.01.010] [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: 09/08/2016] [Accepted: 01/20/2017] [Indexed: 11/19/2022]
Abstract
AIM In Chinese, ethnicity-based and/or diabetes specific modifications of the Modification of Diet in Renal Disease (MDRD) and the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equations have been developed for determining estimated glomerular filtrate rate (eGFR). This study aimed to compare the performance of five different creatinine-based eGFR equations in predicting all-cause mortality among Chinese subjects with type 2 diabetes (T2DM). METHODS A total of 6739 Chinese subjects with T2DM were included. Their eGFR was calculated using the MDRD, CKD-EPI, their respective modified equations for Chinese, and the diabetes specific CKD-EPI Chinese T2DM equations. Multiple Cox regression analysis was used to evaluate the associations of eGFR with all-cause mortality. C-statistics, net reclassification index (NRI) and integrated discrimination index (IDI) were applied to assess the discrimination and reclassification of each eGFR equation in predicting mortality outcome. RESULTS Over a follow-up of 5.7years, the incidence of all-cause mortality was 12.9% (N=867). The CKD-EPI equation discriminated all-cause mortality better than the MDRD equation (C-statistics: 0.714 vs. 0.689, p<0.0001), and Chinese modification of their respective equations did not improve discrimination. Among the five eGFR equations evaluated, the CKD-EPI Chinese T2DM equation provided the best discrimination in predicting all-cause mortality among Chinese subjects with T2DM, and was the only equation providing a significantly positive NRI and IDI relative to the CKD-EPI equation. CONCLUSIONS Among Chinese subjects with T2DM, our findings suggested that the CKD-EPI Chinese T2DM equation best predicted all-cause mortality, and relative to the CKD-EPI equation, conferred improved discrimination and reclassification.
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Affiliation(s)
- C H Lee
- Department of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region; Research Centre of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region
| | - A Z L Shih
- Department of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Y C Woo
- Department of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region
| | - C H Y Fong
- Department of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region
| | - M M A Yuen
- Department of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region
| | - W S Chow
- Department of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region.
| | - K S L Lam
- Department of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region; Research Centre of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region; State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region.
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Lee CH, Cheung CYY, Chow WS, Woo YC, Yeung CY, Lang BHH, Fong CHY, Kwok KHM, Chen SPL, Mak CM, Tan KCB, Lam KSL. Genetics of Apparently Sporadic Pheochromocytoma and Paraganglioma in a Chinese Population. Horm Metab Res 2015; 47:833-8. [PMID: 26267327 DOI: 10.1055/s-0035-1555955] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Identification of germline mutation in patients with apparently sporadic pheochromocytomas and paragangliomas is crucial. Clinical indicators, which include young age, bilateral or multifocal, extra-adrenal, malignant, or recurrent tumors, predict the likelihood of harboring germline mutation in Caucasian subjects. However, data on the prevalence of germline mutation, as well as the applicability of these clinical indicators in Chinese, are lacking. We conducted a cross-sectional study at a single endocrine tertiary referral center in Hong Kong. Subjects with pheochromocytomas and paragangliomas were evaluated for the presence of germline mutations involving 10 susceptibility genes, which included NF1, RET, VHL, SDHA, SDHB, SDHC, SDHD, TMEM 127, MAX, and FH genes. Clinical indicators were assessed for their association with the presence of germline mutations. Germline mutations, 2 being novel, were found in 24.4% of the 41 Chinese subjects recruited and 11.4% among those with apparently sporadic presentation. The increasing number of the afore-mentioned clinical indicators significantly correlated with the likelihood of harboring germline mutation in one of the 10 susceptibility genes. (r=0.757, p=0.026). The presence of 2 or more clinical indicators should prompt genetic testing for germline mutations in Chinese subjects. In conclusion, our study confirmed that a significant proportion of Chinese subjects with apparently sporadic pheochromocytoma and paraganglioma harbored germline mutations and these clinical indicators identified from Caucasians series were also applicable in Chinese subjects. This information will be of clinical relevance in the design of appropriate genetic screening strategies in Chinese populations.
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Affiliation(s)
- C H Lee
- Department of Medicine, Queen Mary Hospital, Hong Kong SAR, China
| | - C Y Y Cheung
- Department of Medicine, Queen Mary Hospital, Hong Kong SAR, China
| | - W S Chow
- Department of Medicine, Queen Mary Hospital, Hong Kong SAR, China
| | - Y C Woo
- Department of Medicine, Queen Mary Hospital, Hong Kong SAR, China
| | - C Y Yeung
- Department of Medicine, Queen Mary Hospital, Hong Kong SAR, China
| | - B H H Lang
- Department of Surgery, Queen Mary Hospital, Hong Kong SAR, China
| | - C H Y Fong
- Department of Medicine, Queen Mary Hospital, Hong Kong SAR, China
| | - K H M Kwok
- Department of Medicine, Queen Mary Hospital, Hong Kong SAR, China
| | - S P L Chen
- Kowloon West Cluster Laboratory Genetic Service, Department of Pathology, Princess Margaret Hospital, Hong Kong SAR, China
| | - C M Mak
- Kowloon West Cluster Laboratory Genetic Service, Department of Pathology, Princess Margaret Hospital, Hong Kong SAR, China
| | - K C B Tan
- Department of Medicine, Queen Mary Hospital, Hong Kong SAR, China
| | - K S L Lam
- Department of Medicine, Queen Mary Hospital, Hong Kong SAR, China
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Lee CH, Hui EYL, Woo YC, Yeung CY, Chow WS, Yuen MMA, Fong CHY, Xu A, Lam KSL. Circulating fibroblast growth factor 21 levels predict progressive kidney disease in subjects with type 2 diabetes and normoalbuminuria. J Clin Endocrinol Metab 2015; 100:1368-75. [PMID: 25625802 DOI: 10.1210/jc.2014-3465] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
BACKGROUND Elevated fibroblast growth factor 21 (FGF21) levels have been suggested, from cross-sectional studies, as an indicator of subclinical diabetic nephropathy. We investigated whether serum FGF21 was predictive of the development of diabetic nephropathy. METHOD Baseline serum FGF21 levels were measured in 1136 Chinese type 2 diabetic subjects recruited from the Hong Kong West Diabetes Registry. The role of serum FGF21 in predicting decline in estimated glomerular filtration rate (eGFR) over a median follow-up of 4 years was analyzed using Cox regression analysis. RESULTS At baseline, serum FGF21 levels increased progressively with eGFR category (P for trend <.001). Among 1071 subjects with baseline eGFR ≥ 30 mL/min/1.73 m(2), serum FGF21 levels were significantly higher in those with eGFR decline during follow-up (n = 171) than those without decline (n = 900) (P < .001). In multivariable Cox regression analysis, baseline serum FGF21 was independently associated with eGFR decline (hazard ratio, 1.21; 95% confidence interval [CI], 1.01-1.43; P = .036), even after adjustment for baseline eGFR. In a subgroup of 559 subjects with baseline eGFR ≥ 60 mL/min/1.73 m(2) and normoalbuminuria, serum FGF21 level remained an independent predictor of eGFR decline (hazard ratio, 1.36; 95% CI, 1.06-1.76; P = .016). Integrated discrimination improvement (IDI) suggested that the inclusion of baseline serum FGF21 significantly improved the prediction of eGFR decline (IDI, 1%; 95% CI, 0.1-3.0; P = .013) in this subgroup, but not in the initial cohort involving all subjects. CONCLUSIONS Elevated serum FGF21 levels may be a useful biomarker for predicting kidney disease progression, especially in the early stages of diabetic nephropathy.
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Affiliation(s)
- C H Lee
- Department of Medicine (C.H.L., E.Y.L.H., Y.C.W., C.Y.Y., W.S.C., M.M.A.Y., C.H.Y.F. A.X., K.S.L.L.), Queen Mary Hospital, Hong Kong SAR; Research Centre of Heart, Brain, Hormone and Healthy Aging (E.Y.L.H., A.X., K.S.L.L.), The University of Hong Kong, Pokfulam, Hong Kong SAR; and State Key Laboratory of Pharmaceutical Biotechnology (A.X., K.S.L.L.), The University of Hong Kong, Pokfulam, Hong Kong SAR
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Li ZJ, Fan DY, Chen FQ, Yuan QY, Chow WS, Xie ZQ. Physiological integration enhanced the tolerance of Cynodon dactylon to flooding. Plant Biol (Stuttg) 2015; 17:459-465. [PMID: 25557716 DOI: 10.1111/plb.12254] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 09/01/2014] [Indexed: 06/04/2023]
Abstract
Many flooding-tolerant species are clonal plants; however, the effects of physiological integration on plant responses to flooding have received limited attention. We hypothesise that flooding can trigger changes in metabolism of carbohydrates and ROS (reactive oxygen species) in clonal plants, and that physiological integration can ameliorate the adverse effects of stress, subsequently restoring the growth of flooded ramets. In the present study, we conducted a factorial experiment combining flooding to apical ramets and stolon severing (preventing physiological integration) between apical and basal ramets of Cynodon dactylon, which is a stoloniferous perennial grass with considerable flooding tolerance. Flooding-induced responses including decreased root biomass, accumulation of soluble sugar and starch, as well as increased activity of superoxide dismutase (SOD) and ascorbate peroxidase (APX) in apical ramets. Physiological integration relieved growth inhibition, carbohydrate accumulation and induction of antioxidant enzyme activity in stressed ramets, as expected, without any observable cost in unstressed ramets. We speculate that relief of flooding stress in clonal plants may rely on oxidising power and electron acceptors transferred between ramets through physiological integration.
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Affiliation(s)
- Z J Li
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
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Lam JKY, Lam KSL, Chow WS, Tan KCB. A middle-aged man with increasing body fat. Clin Obes 2014; 4:237-40. [PMID: 25826795 DOI: 10.1111/cob.12061] [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: 01/20/2014] [Accepted: 04/16/2014] [Indexed: 11/26/2022]
Abstract
A 51-year-old man was referred for evaluation of gradual increase in body fat over bilateral arms, chest and abdomen for 6 months. He was a non-smoker and he drank at least four bottles of beer daily since the age of 18. There was no significant past medical history or any family history of obesity or endocrine diseases. Physical examination showed localized large bulk of fat over the neck, both arms and mammary regions, abdomen, and back (Figs and ). The lower limbs and buttock were relatively spared. There was telangiectasia over the face and chest wall, but no palmar erythema nor finger clubbing. The liver span was normal, and the spleen tip was palpated 2 cm below the costal margin. Examination of the cardiovascular, respiratory and neurological system was normal. [Figure: see text] [Figure: see text] Blood tests showed thrombocytopenia (platelet 140 × 10(9) L(-1) [normal: 170-380 × 10(9) L(-1) ]) and liver function derangement (bilirubin 27 μmol L(-1) , ALP 298 U L(-1) , ALT 127 U L(-1) , AST 165 U L(-1) , GGT 1353 U L(-1) , albumin 33 g L(-1) and globulin 42 g L(-1) ). His clotting profile and renal functions were normal. His hepatitis B surface antigen was positive, but his HBV DNA was <60 copies per mL. Fasting glucose was 5.0 mmol L(-1) . HbA1c was 5.6%. His lipid profile was satisfactory with total cholesterol of 2.9 mmol L(-1) , triglycerides 1.0 mmol L(-1) , HDL-C 1.37 mmol L(-1) and LDL-C 1.1 mmol L(-1) . Ultrasound of the abdomen showed normal-sized liver with coarsened liver parenchymal echogenicity. The spleen was enlarged to 14 cm. This middle-aged man suffered from multiple symmetric lipomatosis and alcoholic liver disease. Dual-energy X-ray showed 1746 gm (40.1%), 1498 gm (32.8%) and 8322 gm (26.8%) fat over the left arm, right arm and trunk, respectively. The legs were unaffected with 1703 gm (19.4%) and 1627 gm (17.7%) fat over the left and right sides, respectively. The patient was advised to stop drinking and he declined surgical treatment.
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Affiliation(s)
- J K Y Lam
- Department of Medicine, Queen Mary Hospital, Hong Kong
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Chow WS, Xu A, Woo YC, Tso AWK, Cheung SCW, Fong CHY, Tse HF, Chau MT, Cheung BMY, Lam KSL. Serum fibroblast growth factor-21 levels are associated with carotid atherosclerosis independent of established cardiovascular risk factors. Arterioscler Thromb Vasc Biol 2013; 33:2454-9. [PMID: 23887638 DOI: 10.1161/atvbaha.113.301599] [Citation(s) in RCA: 141] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVE Serum levels of fibroblast growth factor-21 (FGF21), a metabolic hormone, have been shown to be elevated in subjects with adverse lipid profiles, obesity, metabolic syndrome, impaired glucose tolerance, type 2 diabetes mellitus, and hypertension. Recently, elevated serum FGF21 levels have also been reported in subjects with coronary heart disease or carotid artery plaques. However, whether serum FGF21 is independently associated with atherosclerotic diseases remains unclear. In this study, we examined the relationship between serum FGF21 levels and carotid intima-media thickness (IMT) in a large cohort of Southern Chinese subjects. APPROACH AND RESULTS The cohort consisted of 670 subjects who underwent carotid IMT measurement. Serum FGF21 levels were measured with an ELISA kit. Serum FGF21 levels positively correlated with carotid IMT in women (r=0.32; P<0.001), but not in men (r=0.06; P=0.305). On multiple linear regression analysis, elevated serum FGF21 level in women was an independent risk factor for increased carotid IMT (P=0.039), together with age (P<0.001) and hypertension (P=0.011), in a model comprising also waist circumference, smoking history, serum creatinine, high sensitive C-reactive protein, dysglycemia, and dyslipidemia (adjusted R(2)=35.8%; P<0.001). Elevated serum FGF21 levels were also a significant independent risk factor of carotid IMT on multiple stepwise regression analysis (P=0.01). CONCLUSIONS The present study is the first demonstration that elevated serum FGF21 levels are associated with carotid atherosclerosis in humans, independent of established risk factors including adverse lipid profiles and C-reactive protein. The role of FGF21 as a biomarker or therapeutic target of atherosclerotic diseases warrants further investigation.
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Affiliation(s)
- Wing Sun Chow
- From the Department of Medicine (W.S.C., A.X., Y.C.W., A.W.K.T., C.H.Y.F., H.F.T., B.M.Y.C., K.S.L.L.), Research Centre of Heart, Brain, Hormone, and Healthy Aging (A.X., A.W.K.T., H.F.T., B.M.Y.C., K.S.L.L.), and Department of Radiology (S.C.W.C., M.T.C.), Queen Mary Hospital, The University of Hong Kong, Hong Kong
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Abstract
Photosynthesis, the natural process that yields food, fuel and fibre, spans physical and biological sciences, spatially from atomic scales to the global and temporally from electronic transitions to the evolutionary time frame. Photosynthesis is highly efficient in its primary energy capture, but much less so in terms of conversion to crop yield. The natural photosynthetic system provides fertile ground for exploring and dissecting partial processes that may be mimicked inartificial systems for human needs, perhaps with improved efficiency. Future developments are limited only by the imagination.
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Affiliation(s)
- W S Chow
- Photobioenergetics Group, Research School of Biological Sciences, Institute of Advanced Studies, Australian National University, GPO Box 475, Canberra, ACT 2601 Australia
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Chow WS, Tso AWK, Xu A, Yuen MMA, Fong CHY, Lam TH, Lo SV, Tse HF, Woo YC, Yeung CY, Cheung BMY, Lam KSL. Elevated circulating adipocyte-fatty acid binding protein levels predict incident cardiovascular events in a community-based cohort: a 12-year prospective study. J Am Heart Assoc 2013; 2:e004176. [PMID: 23525430 PMCID: PMC3603238 DOI: 10.1161/jaha.112.004176] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Background Obesity is closely associated with various cardiovascular diseases (CVDs). Adipose tissue inflammation and perturbation of adipokine secretion may contribute to the pathogenesis of CVD. This study aimed to evaluate whether the 2 most abundant adipokines, adipocyte‐fatty acid binding protein (A‐FABP) and adiponectin, are independent risk factors predisposing to CVD. Method and Results We investigated prospectively the 12‐year development of CVD in relation to the baseline levels of A‐FABP and adiponectin in a population‐based community cohort comprising 1847 Chinese subjects recruited from the Hong Kong Cardiovascular Risk Factors Prevalence Study 2 (CRISPS 2) cohort without previous CVD. Baseline serum levels of A‐FABP, adiponectin, and C‐reactive protein (CRP), an established biomarker predictive of CVD, were measured. In all, 182 (9.9%) of the 1847 Chinese subjects developed CVD during a median follow‐up of 9.4 years. The CVD group had more traditional risk factors, higher baseline levels of A‐FABP and CRP (both P<0.001), but similar adiponectin levels (P=0.881) compared with the non‐CVD group. In Cox regression analysis including both biomarkers, the adjusted HR for A‐FABP and CRP for subjects above the optimal cutoff values were 1.57 (95% CI, 1.14 to 2.16; P=0.006) and 1.60 (95% CI, 1.12 to 2.27; P=0.01), respectively, after adjustment for traditional risk factors. The category‐free net reclassification index, but not the c‐statistic, showed improvement in predictive performance by the addition of A‐FABP to the traditional risk factor model (P=0.017). Conclusions Circulating A‐FABP level predicts the development of CVD after adjustment for traditional risk factors in a community‐based cohort. Its clinical use for CVD prediction warrants further validation.
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Affiliation(s)
- Wing Sun Chow
- Department of Medicine, The University of Hong Kong, Hong Kong
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Li JY, Chow WS, Igelnik B, Pao YH. Comments on "Stochastic choice of basis functions in adaptive function approximation and the functional-link net" [and reply]. ACTA ACUST UNITED AC 2012; 8:452-4. [PMID: 18255650 DOI: 10.1109/72.557702] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This paper includes some comments and amendments of the above-mentioned paper by Igelnik et al. (1995). Subsequently, Theorem 1 in the above-mentioned paper has been revised. The significant change of the original theorem is the space of the thresholds in the hidden layer. The revised theorem says that the thresholds of hidden b(0), should be -w(0).y(0)-u(0), where w(0)=alphaw;(0); w;(0)=(w; (01), ..., y(0d)), and u(0 ) be independent and uniformly distributed in V(d)=[0; Omega]x[-Omega; Omega](d-1), I(d), and [-2dOmega, 2dOmega], respectively. In reply, Igelnik et al. acknowledge that a factor of two was omitted in the statement of a trigonometric identity. However, the validity of the essential point of Theorem 1 is unaltered.
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Affiliation(s)
- J Y Li
- Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon
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Abstract
Surgical resections of large-to-giant pituitary adenomas (PA) are technically challenging procedures. Tumors with a fibrous consistency or 'hour-glass' configurations are particularly difficult to remove completely and safely through the transsphenoidal route alone. Although the transcranial approach can facilitate the removal of a large suprasellar mass, it may be associated with significant bleeding within the intradural space. A simultaneous microscopic transcranial and transsphenoidal approach has been described as an alternative surgical strategy. We have further modified this 'above and below' approach by adopting endoscopic techniques for the transsphenoidal part of the procedure. This modified approach has the advantages of requiring only one operating microscope, and permitting freer maneuvers and easier orientation for both surgical teams. We present two patients successfully treated with this approach. Complete tumor removal was achieved and both patients achieved satisfactory functional recovery.
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Affiliation(s)
- Gilberto Ka Kit Leung
- Division of Neurosurgery, Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong, People's Republic of China.
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Yuen MMA, Tam TCC, Lau WWY, Chan JFW, Chow WS, Lam KSL. An "unforeseen" complication of urinary tract infection in a patient with diabetes. BMJ 2010; 341:c3073. [PMID: 20719842 DOI: 10.1136/bmj.c3073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Michele Mae Ann Yuen
- Department of Medicine, Queen Mary Hospital, Hong Kong Special Administrative Region, China.
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Tam X, Shiu S, Chow WS, Wong Y, Betteridge J, Tan K. Abstract: P1203 ATORVASTATIN INDUCES THE EXPRESSION OF SOLUBLE RECEPTOR FOR ADVANCED GLYCATION END PRODUCTS. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70310-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Yeung DCY, Xu A, Tso AWK, Chow WS, Wat NMS, Fong CHY, Tam S, Sham PC, Lam KSL. Circulating levels of adipocyte and epidermal fatty acid-binding proteins in relation to nephropathy staging and macrovascular complications in type 2 diabetic patients. Diabetes Care 2009; 32:132-4. [PMID: 18931100 PMCID: PMC2606847 DOI: 10.2337/dc08-1333] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To investigate the relationships of serum adipocyte fatty acid-binding protein (A-FABP) and epidermal fatty acid-binding protein (E-FABP) with renal dysfunction and macrovascular complications in type 2 diabetic patients. RESEARCH DESIGN AND METHODS The associations of serum A-FABP and E-FABP with markers of renal function, nephropathy staging, and macrovascular complications were examined in 237 type 2 diabetic patients. RESULTS Serum A-FABP and E-FABP correlated significantly with serum creatinine, mean albumin excretion rate, and glomerular filtration rate (all P < 0.001) and were independently associated with diabetic nephropathy staging (P = 0.001 and P < 0.05, respectively). Circulating levels of both types of FABP were increased (P < 0.01) in subjects with macrovascular complications. Serum A-FABP was independently associated with macrovascular complications (odds ratio 2.92 [95% CI 1.42-6.01]; P = 0.004). CONCLUSIONS Serum A-FABP and E-FABP might be novel serum biomarkers for evaluating the progression of nephropathy and its cardiovascular risk in type 2 diabetic patients.
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Affiliation(s)
- Dennis C Y Yeung
- Department of Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, China
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Chan AOO, Chow WS, Lam KF, Hsu A, Hung I, Chan P, But D, Seto WK, Lam KSL. The effect of intragastric balloon placement on weight loss and type 2 diabetes control. Aliment Pharmacol Ther 2008; 28:162-4; author reply 164-5. [PMID: 18532946 DOI: 10.1111/j.1365-2036.2008.03687.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Abstract
The metabolic syndrome represents a cluster of metabolic risk factors that predispose an individual to an increased risk for Type 2 diabetes, cardiovascular diseases and their associated morbidity and mortality. Visceral obesity is thought to be a major culprit. Adipokines secreted from the adipose tissue are now believed to be key factors mediating the metabolic and inflammatory effects of obesity. In this review, we shall examine the evidence suggesting that several novel adipokines, adiponectin, adipocyte fatty acid-binding protein, retinol-binding protein-4 and lipocalin-2, may hold promise as important clinical biomarkers to identify individuals at risk for the metabolic syndrome and related comorbidities.
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Affiliation(s)
- Annette WK Tso
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, 102 Pokfulam Road, Hong Kong
| | - Aimin Xu
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, 102 Pokfulam Road, Hong Kong
| | - Wing Sun Chow
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, 102 Pokfulam Road, Hong Kong
| | - Karen SL Lam
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, 102 Pokfulam Road, Hong Kong
- Research Centre of Heart, Brain, Hormone and Healthy Aging, University of Hong Kong, Hong Kong
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Tan KCB, Chow WS, Tso AWK, Xu A, Tse HF, Hoo RLC, Betteridge DJ, Lam KSL. Thiazolidinedione increases serum soluble receptor for advanced glycation end-products in type 2 diabetes. Diabetologia 2007; 50:1819-1825. [PMID: 17639302 DOI: 10.1007/s00125-007-0759-0] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2007] [Accepted: 06/06/2007] [Indexed: 10/23/2022]
Abstract
AIMS/HYPOTHESIS Interfering with the activation of receptor for AGE (RAGE) by using a soluble form of the AGE receptor (sRAGE) prevents or ameliorates the vascular complications of diabetes in experimental studies. Relatively little is known about factors that influence endogenous circulating sRAGE in humans. We investigated the impact of improving glycaemic control on serum total sRAGE and endogenous secretory RAGE (esRAGE), a splice variant of sRAGE, and compared the effect of rosiglitazone with that of sulfonylurea. METHODS A randomised, open-label, parallel group study was performed with 64 participants randomised to receive add-on therapy with either rosiglitazone or sulfonylurea. Serum total sRAGE and esRAGE and metabolic parameters were measured before and after 6 months of treatment. RESULTS At 6 months, both rosiglitazone and sulfonylurea resulted in a significant reduction in HbA(1c), fasting glucose and AGE. However, significant increases in total sRAGE and esRAGE were only seen in the rosiglitazone group. As a result, serum esRAGE was higher in the rosiglitazone group than in the sulfonylurea group at 6 months (p < 0.01), whereas the differences in sRAGE between the two groups did not reach statistical significance. Stepwise linear regression analysis showed that treatment modality made a greater contribution than the changes in HbA(1c) to the subsequent changes in esRAGE levels at 6 months. CONCLUSIONS/INTERPRETATION Treating type 2 diabetic patients with thiazolidinedione can increase circulating levels of esRAGE and sRAGE. Whether modulation of circulating sRAGE has a beneficial effect on diabetic complications will have to be evaluated in long-term prospective studies.
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Affiliation(s)
- K C B Tan
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong SAR, People's Republic of China.
- Research Centre of Heart, Brain, Hormone and Healthy Aging, University of Hong Kong, Hong Kong SAR, People's Republic of China.
| | - W S Chow
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong SAR, People's Republic of China
| | - A W K Tso
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong SAR, People's Republic of China
| | - A Xu
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong SAR, People's Republic of China
- Research Centre of Heart, Brain, Hormone and Healthy Aging, University of Hong Kong, Hong Kong SAR, People's Republic of China
| | - H F Tse
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong SAR, People's Republic of China
- Research Centre of Heart, Brain, Hormone and Healthy Aging, University of Hong Kong, Hong Kong SAR, People's Republic of China
| | - R L C Hoo
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong SAR, People's Republic of China
| | - D J Betteridge
- Department of Medicine, Royal Free and University College London Medical School, London, UK
| | - K S L Lam
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong SAR, People's Republic of China
- Research Centre of Heart, Brain, Hormone and Healthy Aging, University of Hong Kong, Hong Kong SAR, People's Republic of China
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Tan KCB, Shiu SWM, Chow WS, Leng L, Bucala R, Betteridge DJ. Association between serum levels of soluble receptor for advanced glycation end products and circulating advanced glycation end products in type 2 diabetes. Diabetologia 2006; 49:2756-62. [PMID: 16969649 DOI: 10.1007/s00125-006-0394-1] [Citation(s) in RCA: 120] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2006] [Accepted: 07/06/2006] [Indexed: 01/11/2023]
Abstract
AIMS/HYPOTHESIS Activation of the receptor for advanced glycation end products (RAGE, also known as AGE-specific receptor [AGER]) has been implicated in the development of diabetic vascular complications. Blockade of RAGE using a soluble form of the receptor (sRAGE) suppressed vascular hyperpermeability and atherosclerosis in animal models. Since little is known about the regulation of endogenous sRAGE levels, we determined whether serum sRAGE is influenced by circulating AGEs and the severity of nephropathy in type 2 diabetic patients. MATERIALS AND METHODS We recruited 150 healthy control and 318 diabetic subjects. Diabetic subjects were subdivided into those with proteinuria, microalbuminuria or normoalbuminuria. Serum sRAGE was assayed by ELISA and serum AGEs by competitive ELISA using a polyclonal rabbit antiserum raised against AGE-RNase. RESULTS Diabetic subjects had higher sRAGE (1,029.5 pg/ml [766.1-1,423.0] interquartile range vs 1,002.6 [726.5-1,345.3], p<0.05) and AGEs (4.07+/-1.13, SD, unit/ml vs 3.39+/-1.05, p<0.01) than controls. Proteinuric subjects had the highest sRAGE levels and there was a significant trend between the severity of nephropathy and sRAGE (p=0.01). In diabetic subjects, serum log(sRAGE) correlated with AGEs (r=0.27, p<0.001), log(plasma creatinine) (r=0.31, p<0.001), log(urine AER) (r=0.24, p<0.01) and log(triglycerides) (r=0.15, p<0.01). On stepwise linear regression analysis, AGEs and creatinine levels were the main independent determinants of sRAGE concentration. CONCLUSIONS/INTERPRETATION Serum sRAGE levels and circulating AGEs are associated with the severity of nephropathy in type 2 diabetic patients. Prospective studies are required to determine whether endogenous sRAGE potentially influences the development of diabetic vascular complications.
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Affiliation(s)
- K C B Tan
- Department of Medicine, University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong SAR, People's Republic of China.
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Abstract
Adiponectin may have an antiatherogenic effect by reducing endothelial activation. We hypothesized that plasma adiponectin levels were correlated with endothelial function. Plasma adiponectin level was determined by an in-house RIA assay using a rabbit polyclonal antibody in 73 type 2 diabetic patients and 73 controls. Endothelium-dependent and independent vasodilation of the brachial artery was measured by high-resolution vascular ultrasound. Plasma adiponectin level was lower in diabetic patients than in controls (4.73 +/- 1.96 vs. 7.69 +/- 2.80 microg/ml, respectively; P < 0.001), and they also had impaired endothelium-dependent (5.6 +/- 3.6 vs. 8.6 +/- 4.5%, respectively; P < 0.001) and -independent vasodilation (13.3 +/- 4.9 vs. 16.5 +/- 5.6%, respectively; P < 0.001). Plasma adiponectin correlated with endothelium-dependent vasodilation in controls (P = 0.02) and diabetic patients (P = 0.04). On general linear-model univariate analysis, brachial artery diameter, the presence of diabetes, plasma adiponectin, and high-density lipoprotein were significant independent determinants of endothelium-dependent vasodilation. In vitro experiments showed that endothelial cells expressed adiponectin receptors, and adiponectin increased nitric oxide production in human aortic endothelial cells. In conclusion, low plasma adiponectin level is associated with impaired endothelium-dependent vasodilation, and the association is independent of diabetes mellitus. Adiponectin may act as a link between adipose tissue and the vasculature.
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Affiliation(s)
- K C B Tan
- Department of Medicine, University of Hong Kong.
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