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Nanayakkara KDL, Viswanath NG, Wilson M, Mahawar K, Baig S, Rosenberg J, Rosen M, Sheen AJ, Goodman E, Prabhu A, Madhok B. An international survey of 1014 hernia surgeons: outcome of GLACIER (global practice of inguinal hernia repair) study. Hernia 2023; 27:1235-1243. [PMID: 37310493 DOI: 10.1007/s10029-023-02818-8] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 06/04/2023] [Indexed: 06/14/2023]
Abstract
INTRODUCTION The practice of inguinal hernia repair varies internationally. The global practice of inguinal hernia repair study (GLACIER) aimed to capture these variations in open, laparoscopic, and robotic inguinal hernia repair. METHODS A questionnaire-based survey was created on a web-based platform, and the link was shared on various social media platforms, personal e-mail network of authors, and e-mails to members of the endorsed organisations, which include British Hernia Society (BHS), The Upper Gastrointestinal Surgical Society (TUGSS), and Abdominal Core Health Quality Collaborative (ACHQC). RESULTS A total of 1014 surgeons from 81 countries completed the survey. Open and laparoscopic approaches were preferred by 43% and 47% of participants, respectively. Transabdominal pre-peritoneal repair (TAPP) was the favoured minimally invasive approach. Bilateral and recurrent hernia following previous open repair were the most common indications for a minimally invasive procedure. Ninety-eight percent of the surgeons preferred repair with a mesh, and synthetic monofilament lightweight mesh with large pores was the most common choice. Lichtenstein repair was the most favoured open mesh repair technique (90%), while Shouldice repair was the favoured non-mesh repair technique. The risk of chronic groin pain was quoted as 5% after open repair and 1% after minimally invasive repair. Only 10% of surgeons preferred to perform an open repair using local anaesthesia. CONCLUSION This survey identified similarities and variations in practice internationally and some discrepancies in inguinal hernia repair compared to best practice guidelines, such as low rates of repair using local anaesthesia and the use of lightweight mesh for minimally invasive repair. It also identifies several key areas for future research, such as incidence, risk factors, and management of chronic groin pain after hernia surgery and the clinical and cost-effectiveness of robotic hernia surgery.
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Affiliation(s)
- K D L Nanayakkara
- Royal Derby Hospital, University Hospital Derby and Burton NHS Trust, Derby, UK.
| | - N G Viswanath
- Royal Derby Hospital, University Hospital Derby and Burton NHS Trust, Derby, UK
| | - M Wilson
- Forth Valley NHS Trust, Larbert, UK
| | - K Mahawar
- South Tyneside and Sunderland NHS Foundation Trust, Sunderland, UK
| | - S Baig
- Belle Vue Hospital, Kolkata, India
| | - J Rosenberg
- Department of Surgery, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark
| | - M Rosen
- Cleveland Clinic, Cleveland, USA
| | - A J Sheen
- Manchester University NHS Foundation Trust, Manchester, UK
| | | | - A Prabhu
- Cleveland Clinic, Cleveland, USA
| | - B Madhok
- Royal Derby Hospital, University Hospital Derby and Burton NHS Trust, Derby, UK
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Lee MH, Febriana E, Lim M, Baig S, Halter JB, Magkos F, Toh SA. Asian females without diabetes are protected from obesity-related dysregulation of glucose metabolism compared with males. Obesity (Silver Spring) 2023; 31:2304-2314. [PMID: 37534562 DOI: 10.1002/oby.23833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 05/11/2023] [Accepted: 05/14/2023] [Indexed: 08/04/2023]
Abstract
OBJECTIVE The impact of obesity on the risk for type 2 diabetes differs between males and females; however, the underlying reasons are unclear. This study aimed to investigate the effect of sex on obesity-driven changes in the mechanisms regulating glucose metabolism (insulin sensitivity and secretion) among Asian individuals without diabetes in Singapore. METHODS The study assessed glucose tolerance using oral glucose tolerance test, insulin-mediated glucose uptake using hyperinsulinemic-euglycemic clamp, acute insulin response using an intravenous glucose challenge, and insulin secretion rates in the fasting state and in response to glucose ingestion using mathematical modeling in 727 males and 952 females who had normal body weight (n = 602, BMI < 23 kg/m2 ), overweight (n = 662, 23 ≤ BMI < 27.5), or obesity (n = 415, BMI ≥ 27.5). RESULTS There were no sex differences among lean individuals. Obesity gradually worsened metabolic function, and the progressive adverse effects of obesity on insulin action and secretion were more pronounced in males than females, such that among participants with obesity, females had greater insulin sensitivity, lower insulin secretion, and lower fasting insulin concentration than males. The increase in waist to hip ratio with increasing BMI was more pronounced in males than females. CONCLUSIONS The female sex exerts a protective effect on obesity-driven dysregulation of glucose metabolism in Asian individuals without diabetes.
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Affiliation(s)
- Michelle H Lee
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Eveline Febriana
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Maybritte Lim
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Medicine, National University Hospital, Singapore
| | - Sonia Baig
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Jeffrey B Halter
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Division of Geriatric and Palliative Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Faidon Magkos
- Department of Nutrition, Exercise and Sports, University of Copenhagen, København, Denmark
| | - Sue-Anne Toh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Medicine, National University Hospital, Singapore
- NOVI Health, Singapore
- Regional Health System Office, National University Health System, Singapore
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Shah S, Ali R, Baig S. Abstract No. 172 Safety of Early Enteral Nutrition After Push and Pull Type Gastrostomy Tubes. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.228] [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: 02/26/2023] Open
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Aljehani A, Kew T, Baig S, Cox H, Sommerfeld LC, Ensam B, Kalla M, Steeds RP, Fabritz L. Characterisation of patients referred to a tertiary-level inherited cardiac condition clinic with suspected arrhythmogenic right ventricular cardiomyopathy (ARVC). BMC Cardiovasc Disord 2023; 23:14. [PMID: 36635648 PMCID: PMC9837886 DOI: 10.1186/s12872-022-03021-w] [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: 06/28/2022] [Accepted: 12/19/2022] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Arrhythmogenic right ventricular cardiomyopathy (ARVC) or arrhythmogenic cardiomyopathy is a rare inherited disease with incomplete penetrance and an environmental component. Although a rare disease, ARVC is a common cause of sudden cardiac death in young adults. Data on the different stages of ARVC remains scarce. The purpose of this study is to describe the initial presentation and cardiac phenotype of definite and non-definite ARVC for patients seen at a tertiary service. METHODS This is a single centre, observational cohort study of patients with definite and non-definite ARVC seen at the Inherited Cardiac Conditions services at University Hospital Birmingham (UHB) in the period 2010-2021. Patients were identified by interrogation of digital health records, medical history, imaging and by examining 12-lead electrocardiograms (ECG). RESULT The records of 1451 patients were reviewed; of those, 165 patients were at risk of ARVC (mean age 41 ± 17 years, 56% male). 60 patients fulfilled task force criteria for definite ARVC diagnosis (n = 40, 67% males), and 38 (72%) of them carried a known pathogenic variant. The remaining 105 patients (50% males) were non-definite, and of these 45 (62%) carried a known pathogenic variant. Patients in the definite group were more symptomatic, with palpitations (57% vs. 17%), syncope (35% vs. 6%) and shortness of breath (28% vs. 5%, p < 0.001). T-wave inversion in V1-V3 and epsilon waves were observed only in the definite group. Both PR interval and QRS duration were longer in the definite (170 ± 34 ms and 100 ± 19 ms, p < 0.001) compared to (149 ± 25 and 91 ± 14 ms, p = 0.005). Patients with definite ARVC had significantly larger RV end diastolic areas and significantly reduced biventricular function (RVEDA = 27 ± 10 cm2, RVFAC = 37 ± 11% and EF = 56 ± 12%) compared to the non-definite group (RVEDA = 18 ± 4 cm2, RVFAC 49 ± 6% and LVEF 64 ± 7%, p < 0.001). Sustained ventricular tachycardia (VT) occurred more frequently in the definite group compared to the non-definite group (27% vs. 2%, p < 0.001). Ventricular fibrillation was observed in the definite group only (8 of 60 patients, 13%). CONCLUSION Our study showed differences between definite and non-definite ARVC patients in terms of clinical, electrophysiological and imaging features. Major adverse cardiac events occurred more commonly in the definite group, but also were observed in non-definite ARVC. This single centre observational cohort study forms a basis for further prospective multicentre interventional studies.
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Affiliation(s)
- A. Aljehani
- grid.6572.60000 0004 1936 7486Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK ,grid.412563.70000 0004 0376 6589Department of Cardiology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK ,grid.412149.b0000 0004 0608 0662King Saud Bin Abdulaziz University For Health Sciences, Echocardiography Cardiovascular Technology (ECVT) Program, Riyadh, Saudi Arabia
| | - T. Kew
- grid.6572.60000 0004 1936 7486Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK ,grid.412563.70000 0004 0376 6589Department of Cardiology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - S. Baig
- grid.6572.60000 0004 1936 7486Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK ,grid.412563.70000 0004 0376 6589Department of Cardiology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - H. Cox
- grid.498025.20000 0004 0376 6175West Midlands Regional Genetics Unit, Clinical Genetics, Birmingham Women’s and Children’s NHS Foundation Trust (BWC) Birmingham, Birmingham, UK
| | - L. C. Sommerfeld
- grid.6572.60000 0004 1936 7486Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK ,grid.13648.380000 0001 2180 3484University Centre of Cardiovascular Science, UKE Hamburg, Hamburg, Germany
| | - B. Ensam
- grid.412563.70000 0004 0376 6589Department of Cardiology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - M. Kalla
- grid.6572.60000 0004 1936 7486Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK ,grid.412563.70000 0004 0376 6589Department of Cardiology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - R. P. Steeds
- grid.6572.60000 0004 1936 7486Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK ,grid.412563.70000 0004 0376 6589Department of Cardiology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - L. Fabritz
- grid.6572.60000 0004 1936 7486Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK ,grid.412563.70000 0004 0376 6589Department of Cardiology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK ,Department of Cardiology, University Heart and Vascular Centre Hamburg, UKE Hamburg and DZHK, Hamburg/Kiel/Luebeck, Germany ,grid.13648.380000 0001 2180 3484University Centre of Cardiovascular Science, UKE Hamburg, Hamburg, Germany
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Tuladhar S, Hussain A, Baig S, Ali A, Soheb M, Angchuk T, Dimri AP, Shrestha AB. Climate change, water and agriculture linkages in the upper Indus basin: A field study from Gilgit-Baltistan and Leh-Ladakh. Front Sustain Food Syst 2023. [DOI: 10.3389/fsufs.2022.1012363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The Indus is one of three largest river systems emerging from the Hindu-Kush Himalaya (HKH). In the Upper Indus Basin (UIB), water resources, agriculture and livelihoods are highly vulnerable to climate change induced hazards and risks. Present study investigates impacts of climate change on water availability, agriculture and livelihoods based on perception data collected through focus group discussions and key informant interviews from selected study sites in Gilgit-Baltistan and Leh-Ladakh subregions of the UIB. Findings revealed that climate change is inducing both direct and indirect impacts on water availability, agriculture, and livelihoods. Local people reported that changes in precipitations patterns, temperature and timing of seasons, and increased incidence of crop pest attacks are resulting in the decline of crop and livestock productivity (direct impacts). Climate change is also impacting productivity indirectly through degradation of rangelands/pastures and water variability in traditional irrigation systems. Local people are taking diverse adaptation measures to cope with climate change impacts. These measures include revival of less water intensive traditional crops, start of enterprises and value chain developments in Gilgit-Baltistan, and improvement in water management practices and integration of traditional agricultural products with tourism in Leh-Ladakh. Some adaptation measures are likely to have negative impacts on sustainability of local agriculture. For instance, inorganic agricultural practices in Gilgit-Baltistan, and unplanned shift to water intensive crops and improved breeds of livestock in both Gilgit-Baltistan and Leh-Ladakh. Based on findings, this study suggests establishing a learning mechanism for local communities through collaboration of local institutions from both sides of border and people to people connections.
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Baig S. P-132 MANAGEMENT OF VENTRAL HERNIA IN OBESITY: OUR ALGORITHM. Br J Surg 2022. [DOI: 10.1093/bjs/znac308.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Introduction
Management of ventral hernia in obese is a complex problem. The methods of weight loss, alternatives if the patient cannot undergo bariatric surgery, timing, and type of hernia surgery lacks clarity and are dependent on resources and expertise. There is a need for algorithms based on local population and expertise. In this paper, we present the outcomes of our institutional algorithm.
Methods
It was a retrospective analysis of prospectively collected data. Patients with body mass index(BMI) > 30Kg/m2 were included to undergo surgery as per algorithm considering (a) presentation(symptomatic vs asymptomatic), (b) hernia characteristics(defect width, site, reducibility), and (c) obesity characteristics(BMI, subcutaneous fat, android vs gynecoid). Data on age, BMI, comorbidities, tobacco consumption, hernia width, location, contents, previous surgery, intraoperative parameters(the type of surgery, mesh, drain, fixation), and outcomes(seroma, hematoma, infection, recurrence) were collected.
Results
50 patients underwent treatment as per the algorithm. Mean BMI was 36.6 ± 7.3 kg/m2. The mean follow-up was 17.6 ± 7.2 months. The mean defect width was 4.8 ± 2.9 cm. There were two (4%) recurrences in patients who underwent an anatomical repair under emergency conditions. None of the patients who underwent an elective repair had a recurrence. Total surgical site occurrence was 12% and surgical site occurrence requiring procedural intervention was 8%. There was one (2%) mortality on postoperative day7 due to myocardial infarction.
Conclusion
The algorithm has shown encouraging results in the short-to-medium term. Long-term evaluation with a higher number of patients is needed to confirm its usefulness.
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Affiliation(s)
- S Baig
- Minimal Access and GI Surgery, Belle Vue Clinic , Kolkata , India
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Sheth H, Baig S, Priya P, Ashfaque Y. OC-084 PRACTICE AND SHORT-TERM OUTCOMES IN VENTRAL HERNIA REPAIR: FIRST PROSPECTIVE MULTICENTER DATA ANALYSIS FROM INDIA. Br J Surg 2022. [DOI: 10.1093/bjs/znac308.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Aim
Recording short and long term outcomes of primary ventral hernia (PH) and incisional hernia (IH) surgeries performed in India.
Materials and Methods
Members of Indian Association of Gastrointestinal Endo Surgeons (IAGES) were approached via mails and social media. Forty-five centres agreed to participate. The participating surgeons prospectively recorded the data of patients who underwent VHR from January 21, 2021- April 20, 2021, on a predesigned excel sheet. They were followed for 6 months.
Results
Data from 648 patients were analysed in this study for demographics, hernia characteristics, technical variations, and outcomes. 375 (57.8%) were primary ventral hernias (PH) and 273 (42.15%) were incisional hernias (IH), of which 63 (9.7%) were recurrent hernias.
In the PH group, 171 patients underwent minimal access repair (MAS) and 170 patients underwent open repair. The commonest procedure were open onlay and open pre-peritoneal repairs were performed least frequently. There were 3.73% seroma, 3.2% SSI, 0% 90-day readmission, 0% recurrence, and 0.3% mortality.
In the IH group, 164 patients underwent open repair and 104 underwent MAS repair. The most commonly performed procedure were open onlay and IPOM/IPOM plus. There were 13.92% seroma, 4.4% hematoma, 9.5% SSI, 1.1% mesh explantation, 0.4% wound sinus, 2.2% 90-day readmission, 0% recurrence, and 1.1% mortality.
Conclusion
Despite the guidelines favouring sublay repairs, onlay mesh hernioplasty is the commonest procedure practiced in India. IPOM/IPOM plus is the second commonest procedure. TAR is the preferred component separation technique in India. Complication rates in this study are comparable to published world literature.
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Affiliation(s)
- H Sheth
- Department of Minimally Invasive Surgery, Saifee Hospital , Mumbai , India
| | - S Baig
- Department of Minimally Invasive Surgery , Belle Vue Clinic, Kolkata , India
| | - P Priya
- Department of Minimally Invasive Surgery , Belle Vue Clinic, Kolkata , India
| | - Y Ashfaque
- Department of Minimally Invasive Surgery, Aligarh Muslim University , Aligarh , India
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Fatima R, Yaqoob A, Qadeer E, Khan MA, Ghafoor A, Jamil B, Haq MU, Ahmed N, Baig S, Rehman A, Abbasi Q, Khan AW, Ikram A, Hicks JP, Walley J. Community- vs. hospital-based management of multidrug-resistant TB in Pakistan. Int J Tuberc Lung Dis 2022; 26:929-933. [PMID: 36163662 DOI: 10.5588/ijtld.21.0695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Multidrug-resistant TB (MDR-TB) treatment takes 18-24 months and is complex, costly and isolating. We provide trial evidence on the WHO Pakistan recommendation for community-based care rather than hospital-based care.METHODS Two-arm, parallel-group, superiority trial was conducted in three programmatic management of drug-resistant TB hospitals in Punjab and Sindh Provinces, Pakistan. We enrolled 425 patients with MDR-TB aged >15 years through block randomisation in community-based care (1-week hospitalisation) or hospital-based care (2 months hospitalisation). Primary outcome was treatment success.RESULTS Among 425 patients with MDR-TB, 217 were allocated to community-based care and 208 to hospital-based care. Baseline characteristics were similar between the community and hospitalised arms, as well as in selected sites. Treatment success was 74.2% (161/217) under community-based care and 67.8% (141/208) under hospital-based care, giving a covariate-adjusted risk difference (community vs. hospital model) of 0.06 (95% CI -0.02 to 0.15; P = 0.144).CONCLUSIONS We found no clear evidence that community-based care was more or less effective than hospital-based care model. Given the other substantial advantages of community-based care over hospital based (e.g., more patient-friendly and accessible, with lower treatment costs), this supports the adoption of the community-based care model, as recommended by the WHO.
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Affiliation(s)
- R Fatima
- Common Management Unit (TB, HIV/AIDS and Malaria), Islamabad, Pakistan
| | - A Yaqoob
- Common Management Unit (TB, HIV/AIDS and Malaria), Islamabad, Pakistan, University of Bergen, Bergen, Norway
| | - E Qadeer
- Ministry of National Health Services, Regulations and Coordination, Islamabad, Pakistan
| | - M A Khan
- Association for Social Development, Islamabad, Pakistan
| | - A Ghafoor
- National TB Control Program, Islamabad, Pakistan
| | - B Jamil
- Common Management Unit (TB, HIV/AIDS and Malaria), Islamabad, Pakistan
| | - M U Haq
- University of Bergen, Bergen, Norway, National TB Control Program, Islamabad, Pakistan
| | - N Ahmed
- Ojha Institute of Chest Diseases, Karachi, Pakistan
| | - S Baig
- Ojha Institute of Chest Diseases, Karachi, Pakistan
| | - A Rehman
- Gulab Devi Chest Hospital, Lahore, Pakistan
| | - Q Abbasi
- TB Samli Sanatorium Hospital, Murree, Pakistan
| | - A W Khan
- National TB Control Program, Islamabad, Pakistan
| | - A Ikram
- National Institute of Health, Islamabad, Pakistan
| | - J P Hicks
- Nuffield Centre for International Health and Development, Leeds Institute of Health Sciences, University of Leeds, UK
| | - J Walley
- Nuffield Centre for International Health and Development, Leeds Institute of Health Sciences, University of Leeds, UK
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Magkos F, Lee MH, Lim M, Cook AR, Chhay V, Loh TP, Chia KS, Baig S, Ang IYH, Tay JYY, Khoo CM, Halter JB, Toh SA. Dynamic assessment of insulin secretion and insulin resistance in Asians with prediabetes. Metabolism 2022; 128:154957. [PMID: 34942192 DOI: 10.1016/j.metabol.2021.154957] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 12/03/2021] [Accepted: 12/13/2021] [Indexed: 11/18/2022]
Abstract
AIMS/HYPOTHESIS Prediabetes and type 2 diabetes are highly prevalent in Asia. Understanding the pathophysiology of abnormal glucose homeostasis in Asians will have important implications for reducing disease burden, but there have been conflicting reports on the relative contributions of insulin secretion and action in disease progression. In this study, we aimed to assess the contribution of β-cell dysfunction and insulin resistance in the Asian prediabetes phenotype. METHODS We recruited 1679 Asians with prediabetes (n = 659) or normoglycemia (n = 1020) from a multi-ethnic population in Singapore. Participants underwent an oral glucose tolerance test, an intravenous glucose challenge, and a hyperinsulinemic-euglycemic clamp procedure to determine glucose tolerance, β-cell responsivity, insulin secretion, insulin clearance and insulin sensitivity. RESULTS Participants with prediabetes had significantly higher glucose concentrations in the fasting state and after glucose ingestion than did normoglycemic participants. Insulin sensitivity (M/I ratio) was ~15% lower, acute insulin response (AIR) to intravenous glucose and β-cell responsivity to oral glucose were ~35% lower, but total insulin secretion rate in the fasting state and after glucose ingestion was ~10% greater in prediabetic than in normoglycemic participants. The decrease in β-cell function with worsening glucose homeostasis in Asians with prediabetes was associated with progressively greater defects in AIR rather than M/I. However, analysis using static surrogate measures (HOMA indices) of insulin resistance and β-cell function revealed a different pattern. CONCLUSIONS Lower AIR to intravenous glucose and β-cell responsivity to oral glucose, on a background of mild insulin resistance, are the major contributors to the dysregulation of glucose homeostasis in Asians with prediabetes.
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Affiliation(s)
- Faidon Magkos
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Denmark
| | - Michelle H Lee
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Maybritte Lim
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Alex R Cook
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore
| | - Vanna Chhay
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Tze Ping Loh
- Department of Laboratory Medicine, National University Hospital, Singapore
| | - Kee Seng Chia
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore
| | - Sonia Baig
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Ian Yi Han Ang
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore
| | | | - Chin Meng Khoo
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Medicine, National University Hospital, Singapore
| | - Jeffrey B Halter
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Division of Geriatric and Palliative Medicine, University of Michigan, USA
| | - Sue-Anne Toh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; NOVI Health, Singapore; Department of Medicine, National University Hospital, Singapore; Regional Health System Office, National University Health System, Singapore; Singapore Population HEalth ImpRovement Centre (SPHERiC), National University Health System, Singapore.
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Hassan L, Ali SM, Iqbal W, Baig S, Viney K, Hadi H. Automated detection and reduction of stigma in online discussions about TB. Int J Tuberc Lung Dis 2021; 25:869-870. [PMID: 34615587 DOI: 10.5588/ijtld.21.0270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- L Hassan
- Division of Informatics Imaging and Data Sciences, School of Heath Sciences, School of Biological Sciences, The University of Manchester, Manchester, UK
| | - S M Ali
- Centre for Epidemiology Versus Arthritis, Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, The University of Manchester, Manchester, UK
| | - W Iqbal
- Punjab University College of Information Technology, The University of the Punjab, Lahore, Pakistan
| | - S Baig
- Punjab University College of Information Technology, The University of the Punjab, Lahore, Pakistan
| | - K Viney
- School of Public Health, The University of Sydney, Sydney, NSW, Australia, Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden
| | - H Hadi
- National TB Control Program Pakistan, Islamabad, Pakistan
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Singla R, West F, Au A, Daniels S, Zeniecki P, Baig S. 266 Gender Differences Among Patients Undergoing Pulmonary Embolism Response Team Evaluation: The Role of Point-of-Care Echo. Ann Emerg Med 2021. [DOI: 10.1016/j.annemergmed.2021.09.279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Baig S. Seroprevalence of bovine brucellosis and analysis of risk factors in cattle and livestock Handler's in Gilgit – Pakistan, 2019. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.1384] [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: 10/22/2022] Open
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Sapkota S, Baig S, Hess T, O'Connell AM, Menk J, Shyne M, Fazeli P, Ensrud K, Shmagel A. Vitamin D and bisphosphonate therapy in systemic lupus erythematosus patients who receive glucocorticoids: are we offering the best care? Lupus 2020; 29:263-272. [PMID: 31996109 DOI: 10.1177/0961203320903086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE This study aimed to evaluate management practices for glucocorticoid (GC)-induced osteoporosis (GIOP) in systemic lupus erythematosus (SLE) patients using 2017 American College of Rheumatology guidelines as a gold standard. METHODS We conducted a retrospective cohort study using a clinical database from the years 2011 to 2016. SLE cases with >90 days continuous prednisone use at doses of ≥7.51 mg daily were identified. Osteoporosis risk factors were assessed via chart review. The Fracture Risk Assessment (FRAX) score was estimated for patients > 40 years of age. Vitamin D, bisphosphonate prescriptions, and osteoporotic (OP) fractures were ascertained through chart review. A classification tree was used to identify the key patient-related predictors of bisphosphonate prescription. RESULTS A total of 203 SLE patients met the inclusion criteria. The recommended dose of vitamin D supplement was prescribed to 58.9% of patients < 40 years of age and 61.5% of patients ≥ 40 years of age. Among patients aged ≥ 40 years, 25% were prescribed bisphosphonates compared to 36% who met indications for bisphosphonates per the ACR guidelines. Another 10% were prescribed a bisphosphonate, despite not having indication per the ACR guidelines, which was considered as overtreatment. Among patients aged ≥ 40 years, older age and a higher FRAX score for major OP fracture and hip fracture predicted bisphosphonate prescription. In a classification tree analysis, patients with FRAX scores (for major OP fracture) of ≥ 23.5% predicted bisphosphonate prescription in this SLE population. Among patients who had OP fractures in the follow-up period, nine (6.50%) were inpatients receiving appropriate GIOP care versus 12 (13.6%) who were inpatients not receiving ACR-appropriate care (p = 0.098). CONCLUSIONS In clinical practice, fewer SLE patients with or at risk for GIOP are prescribed vitamin D and bisphosphonates than recommended by the 2017 ACR guidelines. Also, in this study, another 10% were prescribed a bisphosphonate, despite not having an indication per the ACR guidelines. Patients were most likely to receive a bisphosphonate prescription if they had a major OP FRAX score of > 23.5%.
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Affiliation(s)
- S Sapkota
- Department of Medicine, University of Minnesota, Minneapolis, USA.,Division of General Internal Medicine, University of Minnesota, Minneapolis, USA
| | - S Baig
- Department of Medicine, University of Minnesota, Minneapolis, USA
| | - T Hess
- University of Minnesota Medical School, University of Minnesota, Minneapolis, USA
| | | | - J Menk
- Biostatistical Design and Analysis Center, Clinical and Translational Science Institute, University of Minnesota, Minneapolis, USA
| | - M Shyne
- Biostatistical Design and Analysis Center, Clinical and Translational Science Institute, University of Minnesota, Minneapolis, USA
| | - P Fazeli
- Department of Medicine, University of Minnesota, Minneapolis, USA.,Division of Rheumatic and Autoimmune Diseases, University of Minnesota, Minneapolis, USA
| | - K Ensrud
- Department of Medicine and Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, USA.,Center for Care Delivery and Outcome Research, Minneapolis VA Health Care System, Minneapolis, USA
| | - A Shmagel
- Department of Medicine, University of Minnesota, Minneapolis, USA.,Division of Rheumatic and Autoimmune Diseases, University of Minnesota, Minneapolis, USA
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14
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Baig S, Shabeer M, Parvaresh Rizi E, Agarwal M, Lee MH, Ooi DSQ, Chia C, Aung N, Ng G, Teo Y, Chhay V, Magkos F, Vidal-Puig A, Seet RCS, Toh SA. Heredity of type 2 diabetes confers increased susceptibility to oxidative stress and inflammation. BMJ Open Diabetes Res Care 2020; 8:8/1/e000945. [PMID: 32049633 PMCID: PMC7039582 DOI: 10.1136/bmjdrc-2019-000945] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 11/18/2019] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION AND OBJECTIVE Heredity of type 2 diabetes mellitus (T2DM) is associated with greater risk for developing T2DM. Thus, individuals who have a first-degree relative with T2DM (FDRT) provide a natural model to study factors of susceptibility towards development of T2DM, which are poorly understood. Emerging key players in T2DM pathophysiology such as adverse oxidative stress and inflammatory responses could be among possible mechanisms that predispose FDRTs to develop T2DM. Here, we aimed to examine the role of oxidative stress and inflammatory responses as mediators of this excess risk by studying dynamic postprandial responses in FDRTs. RESEARCH DESIGN AND METHODS In this open-label case-control study, we recruited normoglycemic men with (n=9) or without (n=9) a family history of T2DM. We assessed plasma glucose, insulin, lipid profile, cytokines and F2-isoprostanes, expression levels of oxidative and inflammatory genes/proteins in circulating mononuclear cells (MNC), myotubes and adipocytes at baseline (fasting state), and after consumption of a carbohydrate-rich liquid meal or insulin stimulation. RESULTS Postprandial glucose and insulin responses were not different between groups. Expression of oxidant transcription factor NRF2 protein (p<0.05 for myotubes) and gene (pgroup=0.002, ptime×group=0.016), along with its target genes TXNRD1 (pgroup=0.004, ptime×group=0.007), GPX3 (pgroup=0.011, ptime×group=0.019) and SOD-1 (pgroup=0.046 and ptime×group=0.191) was upregulated in FDRT-derived MNC after meal ingestion or insulin stimulation. Synergistically, expression of target genes of inflammatory transcription factor nuclear factor kappa B such as tumor necrosis factor alpha (pgroup=0.001, ptime×group=0.007) was greater in FDRT-derived MNC than in non-FDRT-derived MNC after meal ingestion or insulin stimulation. CONCLUSIONS Our findings shed light on how heredity of T2DM confers increased susceptibility to oxidative stress and inflammation. This could provide early insights into the underlying mechanisms and future risk of FDRTs for developing T2DM and its associated complications.
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Affiliation(s)
- Sonia Baig
- Medicine, National University of Singapore, Singapore
| | | | | | - Madhur Agarwal
- Medicine, National University of Singapore, Singapore
- Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington, Kentucky, USA
| | | | - Delicia Shu Qin Ooi
- Department of Paediatrics, National University of Singapore, Singapore
- Khoo Teck Puat-National University Children's Medical Institute, National University Health System, Singapore
| | - Chelsea Chia
- Medicine, National University Health System, Singapore
- School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Nweni Aung
- Medicine, National University of Singapore, Singapore
| | - Geelyn Ng
- Medicine, National University of Singapore, Singapore
| | - Yvonne Teo
- Medicine, National University of Singapore, Singapore
| | - Vanna Chhay
- Medicine, National University of Singapore, Singapore
| | - Faidon Magkos
- Section for Obesity Research, Department of Nutrition, Exercise and Sports, University of Copenhagen, København, Denmark
| | - Antonio Vidal-Puig
- Department of Clinical Biochemistry, University of Cambridge School of Clinical Medicine, Cambridge, Cambridgeshire, UK
| | - Raymond C S Seet
- Medicine, National University of Singapore, Singapore
- Medicine, National University Health System, Singapore
| | - Sue-Anne Toh
- Medicine, National University of Singapore, Singapore
- Department of Endocrinology, Diabetes and Metabolism, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
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15
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Khan JN, Griffiths T, Sandhu K, Cabezon S, Kwok CS, Baig S, Naneishvili T, Lee VCK, Pasricha A, Robins E, Kanagala P, Butler R, Duckett S, Heatlie G. 1673 Accuracy and prognostic value of physiologist-led stress echocardiography for coronary disease. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.1037] [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: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
No funding sources
Background
Cardiac physiologist-led stress echocardiography (PLSE) services provide potential for expansion of SE services and increased productivity for cardiologists. There is no published data on the accuracy or prognostic value of PLSE.
Purpose
To assess and compare the accuracy and prognostic value of PLSE and cardiologist-led stress echocardiography (CLSE) for CAD assessment
Methods
Retrospective study of 898 subjects undergoing PLSE (n = 393) or CLSE (n = 505) for CAD assessment using exercise or dobutamine. For accuracy assessment, the primary outcome was the ability of stress echocardiography to identify significant CAD on invasive angiography (ICA). Incidence of 24-month non-fatal myocardial infarction (MI), total and cardiac mortality, revascularisation and combined major adverse cardiac events (MACE) were assessed.
Results
Demographics, comorbidities, CAD predictors and cardiac medications were matched between the PLSE and CLSE groups. PLSE had high sensitivity, specificity, positive and negative predictive value and accuracy (85%, 74%, 69%, 88%, 78% respectively). PLSE accuracy measures were similar and non-inferior to CLSE. There was a similar incidence of individual and combined outcomes in PLSE and CLSE subjects. Negative stress echocardiography conferred a low incidence of non-fatal MI (PLSE 1.4% vs. CLSE 0.9%, p = 0.464), cardiac mortality (0.6% vs. 0.0%, p = 0.277) and MACE (6.8% vs. 3.1%, p = 0.404).
Conclusion
This is the largest study of PLSE accuracy and first study of the prognostic value of PLSE. PLSE demonstrates high and non-inferior accuracy compared with CLSE for CAD assessment. Negative PLSE and CLSE confer a similarly very low incidence of cardiac outcomes, confirming for the first time the important prognostic value of PLSE.
Accuracy of PLSE and CLSE for CAD Marker of diagnostic test Total (n = 72) PLSE (n = 32) CLSE (n = 40) p Significant CAD present (n, %) 20 (27.8%) 12 (37.5%) 8 (20.0%) 0.167 * Single-vessel CAD 12 (60.0%) 7 (58.3%) 5 (62.5%) 0.325 * Multi-vessel CAD 8 (40.0%) 5 (41.7%) 3 (37.5%) 0.325 Sensitivity 76% (66-76%) 85% (73-97%) 63% (48-78%) Non-significant Specificity 73% (63-73%) 74% (59-89%) 72% (58-86%) Non-significant Positive predictive value (PPV) 53% (42-64%) 69% (53-85%) 29% (15-43%) Significant Negative predictive value (NPV) 88% (80-96%) 88% (77-99%) 88% (78-98%) Non-significant Overall accuracy 74% (64-84%) 78% (64-92%) 70% (56-84%) Non-significant Accuracy data expressed as value (95% confidence interval). CAD= coronary artery disease. Differences in values between PLSE and CLSE considered statistically significant if no crossover in 95% confidence intervals
Abstract 1673 Figure. Predicted coronary artery lesion from SE
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Affiliation(s)
- J N Khan
- University Hospitals of Coventry and Warwickshire NHS Trust, Coventry, United Kingdom of Great Britain & Northern Ireland
| | - T Griffiths
- Royal Stoke University Hospital, Cardiology, Stoke-on-Trent, United Kingdom of Great Britain & Northern Ireland
| | - K Sandhu
- Royal Stoke University Hospital, Cardiology, Stoke-on-Trent, United Kingdom of Great Britain & Northern Ireland
| | - S Cabezon
- Royal Stoke University Hospital, Cardiology, Stoke-on-Trent, United Kingdom of Great Britain & Northern Ireland
| | - C S Kwok
- Royal Stoke University Hospital, Cardiology, Stoke-on-Trent, United Kingdom of Great Britain & Northern Ireland
| | - S Baig
- Royal Stoke University Hospital, Cardiology, Stoke-on-Trent, United Kingdom of Great Britain & Northern Ireland
| | - T Naneishvili
- Royal Stoke University Hospital, Cardiology, Stoke-on-Trent, United Kingdom of Great Britain & Northern Ireland
| | - V C K Lee
- Royal Stoke University Hospital, Cardiology, Stoke-on-Trent, United Kingdom of Great Britain & Northern Ireland
| | - A Pasricha
- Royal Stoke University Hospital, Cardiology, Stoke-on-Trent, United Kingdom of Great Britain & Northern Ireland
| | - E Robins
- Royal Stoke University Hospital, Cardiology, Stoke-on-Trent, United Kingdom of Great Britain & Northern Ireland
| | - P Kanagala
- Royal Stoke University Hospital, Cardiology, Stoke-on-Trent, United Kingdom of Great Britain & Northern Ireland
| | - R Butler
- Royal Stoke University Hospital, Cardiology, Stoke-on-Trent, United Kingdom of Great Britain & Northern Ireland
| | - S Duckett
- Royal Stoke University Hospital, Cardiology, Stoke-on-Trent, United Kingdom of Great Britain & Northern Ireland
| | - G Heatlie
- Royal Stoke University Hospital, Cardiology, Stoke-on-Trent, United Kingdom of Great Britain & Northern Ireland
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16
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Bicho Augusto JA, Nordin S, Kozor R, Vijapurapu R, Knott K, Ramaswami U, Geberhiwot TD, Steeds RP, Baig S, Hughes D, Moon JC. P340Inflammatory cardiomyopathy in Fabry disease. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0174] [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: 11/13/2022] Open
Abstract
Abstract
Background
Fabry disease (FD) is an X-linked lysosomal storage disorder caused by mutations in α-galactosidase A. Cardiovascular magnetic resonance (CMR) has helped unveil the pathogenesis of Fabry cardiomyopathy: sphingolipid storage (low T1 mapping values), left ventricular hypertrophy (LVH) and myocardial fibrosis with late gadolinium enhancement (LGE) characteristically present in the basal inferolateral (BIFL) wall. Recent evidence has suggested that the LGE may be inflammation and oedema as part of this pathogenic process.
Purpose
To assess the presence of inflammation in patients with FD using T2 mapping (for oedema/inflammation) supported by blood troponin levels (showing myocyte death and by inference inflammation).
Methods
A multi-centre international study in gene positive FD patients using CMR and blood biomarkers. All participants underwent CMR at 1.5 T. Native T1 and T2 mapping were performed. The T1 mapping sequence was MOLLI with sampling scheme in seconds. LGE used a phase sensitive inversion recovery sequence. Global longitudinal 2D strain (GLS) values were obtained using feature tracking analysis. Blood high-sensitivity troponin T (hsTnT) was measured on the same day.
Results
100 FD patients (age 43.8±1.3 years, 42% male) were included. 45% had LVH, 35% LGE. Low T1 mapping (normal <943ms) was found in 49% and 33% had high hsTnT values (normal <15ng/L). Mean T2 mapping values were 52.6±0.6ms in the BIFL wall and 49.5±0.3ms in the remote myocardium/septum (p<0.001, normal <53ms). T2 values in the BIFL wall were significantly higher among patients with LGE (58.2±6.1ms vs 49.2±3.1ms, p<0.001, Figure 1). In a per-segment analysis of 1600 segments, higher T2 values correlated positively with percentage of LGE per segment (r=0,262, p<0.001), T1 values (r=0,205, p<0.001), maximum wall thickness (r=0,253, p<0.001) and GLS values (r=0,212, p<0.001). HsTnT values were higher among patients with LGE (median of 31 vs 3ng/L in patients without LGE, p<0.001). There was a strong positive correlation between T2 values in the BIFL wall and ln(hsTnT) (r=0.776, p<0.001, Figure 2). The strongest predictor of increased hsTnT in multivariate analysis (age, sex, LVH, septum T1, T2 in the BIFL, GLS, LGE) was T2 in the BIFL wall (β=0.4, p=0.001).
Conclusions
Cardiac involvement in FD goes beyond storage (low T1 values). When LGE is present, this is almost always associated with a high T2 and troponin elevation supporting FD as a chronic inflammatory cardiomyopathy. Initial reports of LGE being fibrosis are too simplistic – LGE in FD appears to have a significant chronic inflammation/oedema component.
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Affiliation(s)
| | - S Nordin
- Barts Health NHS Trust, London, United Kingdom
| | - R Kozor
- University of Sydney, Sydney Medical School, Sydney, Australia
| | - R Vijapurapu
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom
| | - K Knott
- University College London, London, United Kingdom
| | - U Ramaswami
- Royal Free Hospital, Lysosomal Storage Disorder Unit, London, United Kingdom
| | - T D Geberhiwot
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom
| | - R P Steeds
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom
| | - S Baig
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom
| | - D Hughes
- Royal Free Hospital, Lysosomal Storage Disorder Unit, London, United Kingdom
| | - J C Moon
- Barts Health NHS Trust, London, United Kingdom
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17
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Chakarov S, Lim HY, Tan L, Lim SY, See P, Lum J, Zhang XM, Foo S, Nakamizo S, Duan K, Kong WT, Gentek R, Balachander A, Carbajo D, Bleriot C, Malleret B, Tam JKC, Baig S, Shabeer M, Toh SAES, Schlitzer A, Larbi A, Marichal T, Malissen B, Chen J, Poidinger M, Kabashima K, Bajenoff M, Ng LG, Angeli V, Ginhoux F. Two distinct interstitial macrophage populations coexist across tissues in specific subtissular niches. Science 2019; 363:363/6432/eaau0964. [PMID: 30872492 DOI: 10.1126/science.aau0964] [Citation(s) in RCA: 524] [Impact Index Per Article: 104.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 02/08/2019] [Indexed: 12/12/2022]
Abstract
Macrophages are a heterogeneous cell population involved in tissue homeostasis, inflammation, and various pathologies. Although the major tissue-resident macrophage populations have been extensively studied, interstitial macrophages (IMs) residing within the tissue parenchyma remain poorly defined. Here we studied IMs from murine lung, fat, heart, and dermis. We identified two independent IM subpopulations that are conserved across tissues: Lyve1loMHCIIhiCX3CR1hi (Lyve1loMHCIIhi) and Lyve1hiMHCIIloCX3CR1lo (Lyve1hiMHCIIlo) monocyte-derived IMs, with distinct gene expression profiles, phenotypes, functions, and localizations. Using a new mouse model of inducible macrophage depletion (Slco2b1 flox/DTR), we found that the absence of Lyve1hiMHCIIlo IMs exacerbated experimental lung fibrosis. Thus, we demonstrate that two independent populations of IMs coexist across tissues and exhibit conserved niche-dependent functional programming.
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Affiliation(s)
- Svetoslav Chakarov
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Hwee Ying Lim
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
| | - Leonard Tan
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Sheau Yng Lim
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
| | - Peter See
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Josephine Lum
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Xiao-Meng Zhang
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Shihui Foo
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Satoshi Nakamizo
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Kaibo Duan
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Wan Ting Kong
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Rebecca Gentek
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Akhila Balachander
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Daniel Carbajo
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Camille Bleriot
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Benoit Malleret
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore.,Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
| | - John Kit Chung Tam
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road, Singapore 119228, Singapore
| | - Sonia Baig
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 119228 Singapore, Singapore
| | - Muhammad Shabeer
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 119228 Singapore, Singapore
| | - Sue-Anne Ee Shiow Toh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 119228 Singapore, Singapore
| | - Andreas Schlitzer
- Myeloid Cell Biology, Life & Medical Sciences Institute, University of Bonn, 53115 Bonn, Germany
| | - Anis Larbi
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Thomas Marichal
- Laboratory of Cellular and Molecular Immunology, GIGA Research, University of Liège, 4000 Liège, Belgium.,Faculty of Veterinary Medicine, Liège University, 4000 Liège, Belgium.,WELBIO, Walloon Excellence in Life Sciences and Biotechnology, 1300 Wallonia, Belgium
| | - Bernard Malissen
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France.,Centre d'Immunophénomique, Aix Marseille Université, INSERM, CNRS UMR, 13288 Marseille, France
| | - Jinmiao Chen
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Michael Poidinger
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Kenji Kabashima
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore.,Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan
| | - Marc Bajenoff
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Lai Guan Ng
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore
| | - Veronique Angeli
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
| | - Florent Ginhoux
- Singapore Immunology Network (SIgN), A*STAR, 8A Biomedical Grove, Immunos Building, Level 3, Singapore 138648, Singapore.
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18
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Parvaresh Rizi E, Baig S, Loh TP, Toh SA, Khoo CM, Tai ES. Two-Hour Postprandial Lipoprotein Particle Concentration Differs Between Lean and Obese Individuals. Front Physiol 2019; 10:856. [PMID: 31379592 PMCID: PMC6649689 DOI: 10.3389/fphys.2019.00856] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 06/20/2019] [Indexed: 12/20/2022] Open
Abstract
The concentrations of lipoprotein particles [high-density lipoproteins (HDLs), low-density lipoproteins (LDLs), very-low-density lipoproteins (VLDLs), and chylomicrons] are associated with the risk of cardiovascular diseases. Most studies have examined these associations in the fasting state. Previous studies have shown lipoprotein particle concentration change following meal, and these changes are different in individuals with obesity. In this study, we aimed to assess whether various meal compositions lead to adverse short-term (2-h) postprandial lipoproteinemia in obese insulin resistant (obese-IR) subjects as compared to lean insulin sensitive (lean-IS) subjects. In a randomized crossover trial, nine lean-IS and nine obese-IR Chinese men aged 22–35 years were challenged with isoenergetic and isovolumic meals rich in protein (HP), fat (HF), or carbohydrate (HC). Plasma samples were collected after a 10-h fast, as well as 1-h and 2-h post-meal and analyzed using nuclear magnetic resonance. Plasma concentration of large VLDLs and chylomicron particles was higher and increased more after all meals in obese-IR compared to lean-IS subjects. The HP meal decreased small LDL particle concentration in obese-IR subjects, and increased small HDL particle concentration in all subjects. The HF meal led to a decrease in small HDL concentration in all subjects. In conclusion, obese-IR subjects revealed a detrimental response to meal challenges even as early as 2-h after meal intake.
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Affiliation(s)
- Ehsan Parvaresh Rizi
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Medicine, National University Health System, Singapore, Singapore
| | - Sonia Baig
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Tze Ping Loh
- Department of Laboratory Medicine, National University Health System, Singapore, Singapore
| | - Sue-Anne Toh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Medicine, National University Health System, Singapore, Singapore.,Duke-National University of Singapore Medical School, Singapore, Singapore.,Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Chin Meng Khoo
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Medicine, National University Health System, Singapore, Singapore
| | - E Shyong Tai
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Medicine, National University Health System, Singapore, Singapore.,Duke-National University of Singapore Medical School, Singapore, Singapore
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19
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Bicho Augusto JA, Nordon S, Kozor R, Vijapurapu R, Knott K, Hughes R, Rosmini S, Ramaswami U, Geberhiwot T, Steeds RP, Baig S, Hughes D, Moon JC. 323Inflammatory cardiomyopathy in Fabry disease. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez102.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- J A Bicho Augusto
- Barts Health NHS Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - S Nordon
- Barts Health NHS Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - R Kozor
- University of Sydney, Sydney Medical School, Sydney, Australia
| | - R Vijapurapu
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - K Knott
- Barts Health NHS Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - R Hughes
- Barts Health NHS Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - S Rosmini
- Barts Health NHS Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - U Ramaswami
- Royal Free Hospital, Lysosomal Storage Disorder Unit, London, United Kingdom of Great Britain & Northern Ireland
| | - T Geberhiwot
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - R P Steeds
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - S Baig
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - D Hughes
- Royal Free Hospital, Lysosomal Storage Disorder Unit, London, United Kingdom of Great Britain & Northern Ireland
| | - J C Moon
- Barts Health NHS Trust, London, United Kingdom of Great Britain & Northern Ireland
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Baig S, Parvaresh Rizi E, Chia C, Shabeer M, Aung N, Loh TP, Magkos F, Vidal-Puig A, Seet RCS, Khoo CM, Toh SA. Genes Involved in Oxidative Stress Pathways Are Differentially Expressed in Circulating Mononuclear Cells Derived From Obese Insulin-Resistant and Lean Insulin-Sensitive Individuals Following a Single Mixed-Meal Challenge. Front Endocrinol (Lausanne) 2019; 10:256. [PMID: 31068904 PMCID: PMC6491694 DOI: 10.3389/fendo.2019.00256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 04/02/2019] [Indexed: 01/11/2023] Open
Abstract
Background: Oxidative stress induced by nutritional overload has been linked to the pathogenesis of insulin resistance, which is associated with metabolic syndrome, obesity, type 2 diabetes and diabetic vascular complications. Postprandial changes in expression of oxidative stress pathway genes in obese vs. lean individuals, following intake of different types of meals varying in macronutrient composition have not been characterized to date. Here we aimed to test whether/how oxidative stress responses in obese vs. lean individuals are modulated by meal composition. Methods: High-carbohydrate (HC), high-fat (HF), or high-protein (HP) liquid mixed meals were administered to study subjects (lean insulin-sensitive, n = 9 and obese insulin-resistant, n = 9). Plasma levels of glucose and insulin, lipid profile, urinary F2-isoprostanes (F2-IsoP), and expression levels of genes of oxidative stress pathways were assessed in mononuclear cells (MNC) derived from fresh peripheral blood, at baseline and up to 6-h postprandial states. Differences in these parameters were compared between insulin-sensitive/resistant groups undergoing aforementioned meal challenges. Results: Obese individuals exhibited increased pro-oxidant (i.e., CYBB and CYBA) and anti-oxidant (i.e., TXN RD1) gene expression in the postprandial state, compared with lean subjects, regardless of meal type (P interaction for group × time < 0.05). By contrast, lean subjects had higher expression of NCF-4 gene (pro-oxidant) after HC meal and SOD1 gene (anti-oxidant) after HC and HF meals (P interaction for group × meal < 0.05). There was an increase in postprandial level of urinary F2-IsoP in the obese (P < 0.05) but not lean group. Conclusions: These findings may represent an adaptive oxidative response to mitigate increased stress induced by acute nutritional excess. Further, the results suggest an increased predisposition of obese subjects to oxidative stress. Chronic nutritional excess resulting in increases in body weight and adiposity might lead to decompensation leading to worsening insulin resistance and its sequel. Insights from this study could impact on nutritional recommendations for obese subjects at high-risk of cardiovascular diseases.
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Affiliation(s)
- Sonia Baig
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Ehsan Parvaresh Rizi
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Medicine, National University Health System, Singapore, Singapore
| | - Chelsea Chia
- Trinity College Dublin, University of Dublin, Dublin, Ireland
| | - Muhammad Shabeer
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Nweni Aung
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Tze Ping Loh
- Department of Laboratory Medicine, National University Health System, Singapore, Singapore
| | - Faidon Magkos
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Singapore Institute of Clinical Sciences (SICS), ASTAR, Singapore, Singapore
| | - Antonio Vidal-Puig
- MRC MDU, Metabolic Research Laboratories, University of Cambridge, Cambridge, United Kingdom
| | - Raymond C. S. Seet
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Medicine, National University Health System, Singapore, Singapore
| | - Chin Meng Khoo
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Medicine, National University Health System, Singapore, Singapore
| | - Sue-Anne Toh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Medicine, National University Health System, Singapore, Singapore
- Programme in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Graduate Medical School, Singapore, Singapore
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
- *Correspondence: Sue-Anne Toh
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Baig S, Vijapurapu R, Alharbi F, Nordin S, Kozor R, Moon J, Bembi B, Geberhiwot T, Steeds RP. Diagnosis and treatment of the cardiovascular consequences of Fabry disease. QJM 2019; 112:3-9. [PMID: 29878206 DOI: 10.1093/qjmed/hcy120] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 11/14/2022] Open
Abstract
Fabry disease (FD) has been a diagnostic challenge since it was first recognized in 1898, with patients traditionally suffering from considerable delay before a diagnosis is made. Cardiac involvement is the current leading cause of death in FD. A combination of improved enzyme assays, availability of genetic profiling, together with more organized clinical services for rare diseases, has led to a rapid growth in the prevalence of FD. The earlier and more frequent diagnosis of asymptomatic individuals before development of the phenotype has focussed attention on early detection of organ involvement and closer monitoring of disease progression. The high cost of enzyme replacement therapy at a time of constraint within many health economies, moreover, has challenged clinicians to target treatment effectively. This article provides an outline of FD for the general physician and summarizes the aetiology and pathology of FD, the cardiovascular consequences thereof, modalities used in diagnosis and then discusses current indications for treatment, including pharmacotherapy and device implantation.
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Affiliation(s)
- S Baig
- Department of Cardiology, Queen Elizabeth Hospital Birmingham, Birmingham, UK
- Institute of Cardiovascular Science, University of Birmingham, Birmingham, UK
| | - R Vijapurapu
- Department of Cardiology, Queen Elizabeth Hospital Birmingham, Birmingham, UK
- Institute of Cardiovascular Science, University of Birmingham, Birmingham, UK
| | - F Alharbi
- Central Military Laboratory and Blood Bank, Riyadh, Saudi Arabia
| | - S Nordin
- Institute of Cardiovascular Science, University College London, London, UK
| | - R Kozor
- Sydney Medical School, University of Sydney, Camperdown, Australia
| | - J Moon
- Institute of Cardiovascular Science, University College London, London, UK
| | - B Bembi
- Centre for Rare Diseases, AMC Hospital of Udine, Udine, Italy
| | - T Geberhiwot
- Centre for Rare Diseases, Queen Elizabeth Hospital Birmingham, Birmingham, UK
| | - R P Steeds
- Department of Cardiology, Queen Elizabeth Hospital Birmingham, Birmingham, UK
- Institute of Cardiovascular Science, University of Birmingham, Birmingham, UK
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Shah S, Ayub E, Baig S, Ali M, Baig S. PO218 Prevalence Awareness and Control of Hypertension Among Adults In the Land of Longevity. Glob Heart 2018. [DOI: 10.1016/j.gheart.2018.09.184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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23
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Shah S, Akhtar N, Baig S. PO593 Exposure to Environmental Smoke and Current Cigarette Smoking Among School Children In United Arab Emirates: A Double Whammy. Glob Heart 2018. [DOI: 10.1016/j.gheart.2018.09.454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Hayer M, Price A, Liu B, Baig S, Ferro C, Townend J, Steeds R, Edwards N. P6025Myocardial ultrastructural changes in progressive CKD: the key intermediaries of “uraemic” cardiomyopathy? Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M Hayer
- University of Birmingham, Institute of Cardiovascular Sciences, Birmingham, United Kingdom
| | - A Price
- University of Birmingham, Institute of Cardiovascular Sciences, Birmingham, United Kingdom
| | - B Liu
- University of Birmingham, Institute of Cardiovascular Sciences, Birmingham, United Kingdom
| | - S Baig
- University of Birmingham, Institute of Cardiovascular Sciences, Birmingham, United Kingdom
| | - C Ferro
- University of Birmingham, Institute of Cardiovascular Sciences, Birmingham, United Kingdom
| | - J Townend
- University of Birmingham, Institute of Cardiovascular Sciences, Birmingham, United Kingdom
| | - R Steeds
- University of Birmingham, Institute of Cardiovascular Sciences, Birmingham, United Kingdom
| | - N Edwards
- University of Birmingham, Institute of Cardiovascular Sciences, Birmingham, United Kingdom
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Vijapurapu R, Baig S, Wheeldon N, Hughes D, Jovanovic A, Woolfson P, Geberhiwot T, Steeds R. P1017A national study evaluating cardiac device implantation and usage in patients with Fabry disease. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p1017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- R Vijapurapu
- Queen Elizabeth Hospital Birmingham, Cardiology, Birmingham, United Kingdom
| | - S Baig
- Queen Elizabeth Hospital Birmingham, Cardiology, Birmingham, United Kingdom
| | - N Wheeldon
- Sheffield Teaching Hospitals NHS Trust, South Yorkshire Cardiothoracic Centre, Sheffield, United Kingdom
| | - D Hughes
- Royal Free Hospital, Lysosomal Storage Disorder Unit, London, United Kingdom
| | - A Jovanovic
- Salford Royal Hospital, Mark Holland Metabolic Unit, Manchester, United Kingdom
| | - P Woolfson
- Salford Royal Hospital, Cardiology, Manchester, United Kingdom
| | - T Geberhiwot
- Queen Elizabeth Hospital Birmingham, Centre for Rare Diseases, Birmingham, United Kingdom
| | - R Steeds
- Queen Elizabeth Hospital Birmingham, Cardiology, Birmingham, United Kingdom
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Liu B, Neil D, Bhabra M, Hayer M, Baig S, Price A, Edwards N, Steeds R. P2571Sex differences in left ventricular remodelling in volume overload due to primary degenerative mitral regurgitation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- B Liu
- University of Birmingham, Institute of Cardiovascular Sciences, Birmingham, United Kingdom
| | - D Neil
- University Hospital Birmingham, Histopathology, Birmingham, United Kingdom
| | - M Bhabra
- University Hospital Birmingham, Cardiothoracic Surgery, Birmingham, United Kingdom
| | - M Hayer
- University of Birmingham, Institute of Cardiovascular Sciences, Birmingham, United Kingdom
| | - S Baig
- University Hospital Birmingham, Cardiology, Birmingham, United Kingdom
| | - A Price
- University Hospital Birmingham, Cardiology, Birmingham, United Kingdom
| | - N Edwards
- University Hospital Birmingham, Cardiology, Birmingham, United Kingdom
| | - R Steeds
- University Hospital Birmingham, Cardiology, Birmingham, United Kingdom
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Simoni Y, Fehlings M, Kløverpris HN, McGovern N, Koo SL, Loh CY, Lim S, Kurioka A, Fergusson JR, Tang CL, Kam MH, Dennis K, Lim TKH, Fui ACY, Hoong CW, Chan JKY, Curotto de Lafaille M, Narayanan S, Baig S, Shabeer M, Toh SAES, Tan HKK, Anicete R, Tan EH, Takano A, Klenerman P, Leslie A, Tan DSW, Tan IB, Ginhoux F, Newell EW. Human Innate Lymphoid Cell Subsets Possess Tissue-Type Based Heterogeneity in Phenotype and Frequency. Immunity 2018; 48:1060. [PMID: 29768165 DOI: 10.1016/j.immuni.2018.04.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Parvaresh Rizi E, Loh TP, Baig S, Chhay V, Huang S, Caleb Quek J, Tai ES, Toh SA, Khoo CM. A high carbohydrate, but not fat or protein meal attenuates postprandial ghrelin, PYY and GLP-1 responses in Chinese men. PLoS One 2018; 13:e0191609. [PMID: 29385178 PMCID: PMC5792004 DOI: 10.1371/journal.pone.0191609] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 01/08/2018] [Indexed: 12/22/2022] Open
Abstract
It is known that the macronutrient content of a meal has different impacts on the postprandial satiety and appetite hormonal responses. Whether obesity interacts with such nutrient-dependent responses is not well characterized. We examined the postprandial appetite and satiety hormonal responses after a high-protein (HP), high-carbohydrate (HC), or high-fat (HF) mixed meal. This was a randomized cross-over study of 9 lean insulin-sensitive (mean±SEM HOMA-IR 0.83±0.10) and 9 obese insulin-resistant (HOMA-IR 4.34±0.41) young (age 21–40 years), normoglycaemic Chinese men. We measured fasting and postprandial plasma concentration of glucose, insulin, active glucagon-like peptide-1 (GLP-1), total peptide-YY (PYY), and acyl-ghrelin in response to HP, HF, or HC meals. Overall postprandial plasma insulin response was more robust in the lean compared to obese subjects. The postprandial GLP-1 response after HF or HP meal was higher than HC meal in both lean and obese subjects. In obese subjects, HF meal induced higher response in postprandial PYY compared to HC meal. HP and HF meals also suppressed ghrelin greater compared to HC meal in the obese than lean subjects. In conclusion, a high-protein or high-fat meal induces a more favorable postprandial satiety and appetite hormonal response than a high-carbohydrate meal in obese insulin-resistant subjects.
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Affiliation(s)
- Ehsan Parvaresh Rizi
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Medicine, National University Health System, Singapore
| | - Tze Ping Loh
- Department of Laboratory Medicine, National University Health System, Singapore
| | - Sonia Baig
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Vanna Chhay
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Shiqi Huang
- Food Science and Technology Program, Department of Chemistry, Faculty of Science, National University of Singapore, Singapore
| | - Jonathan Caleb Quek
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - E. Shyong Tai
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Medicine, National University Health System, Singapore
- Duke-National University of Singapore Medical School, Singapore
| | - Sue-Anne Toh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Medicine, National University Health System, Singapore
- Duke-National University of Singapore Medical School, Singapore
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Chin Meng Khoo
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Medicine, National University Health System, Singapore
- * E-mail:
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29
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Parvaresh Rizi E, Baig S, Shabeer M, Teo Y, Mok SF, Loh TP, Magkos F, Virtue S, Vidal-Puig A, Tai ES, Khoo CM, Toh SA. Meal rich in carbohydrate, but not protein or fat, reveals adverse immunometabolic responses associated with obesity. Nutr J 2016; 15:100. [PMID: 27903298 PMCID: PMC5131405 DOI: 10.1186/s12937-016-0219-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Accepted: 11/24/2016] [Indexed: 12/18/2022] Open
Abstract
Background Obesity-related insulin resistance is linked to inflammation. Immunometabolic function differs between lean and obese subjects, but whether macronutrient composition of ingested meals affects these responses is not well known. We examined the effects of a single meal rich in fat, protein, or carbohydrate on immunometabolic responses. Methods Nine lean insulin sensitive (LIS) men and 9 obese insulin resistant (OIR) men ingested high-carbohydrate (HC), high-fat (HF) or high-protein (HP) mixed meals in random order. We assessed plasma glucose, insulin, and cytokine responses and cytokine gene expression in circulating mononuclear cells (MNC) at fasting and postprandial states (up to 6-h). Results Expression of NF-κB and TNFα genes were greater; whereas that of TGFβ and IL-6 genes were lower, in the OIR compared to the LIS individuals. The differences were significantly greater after the HC meal, but not after the HP or HF meal. Similar results were obtained for plasma concentrations of TNFα and IL-6. Conclusions Our findings indicate that a single HC meal has a distinct adverse effect on immunometabolic responses in the OIR individuals. The cumulative effect of such adverse responses to meals rich in carbohydrate may predispose the OIR individuals to a higher risk of cardiovascular disease. Electronic supplementary material The online version of this article (doi:10.1186/s12937-016-0219-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ehsan Parvaresh Rizi
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, 117599, Singapore, Singapore.,Department of Medicine, National University Health System, Singapore, Singapore
| | - Sonia Baig
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, 117599, Singapore, Singapore
| | - Muhammad Shabeer
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, 117599, Singapore, Singapore
| | - Yvonne Teo
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, 117599, Singapore, Singapore
| | - Shao Feng Mok
- Department of Medicine, National University Health System, Singapore, Singapore
| | - Tze Ping Loh
- Department of Laboratory Medicine, National University Health System, Singapore, Singapore
| | - Faidon Magkos
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Singapore Institute of Clinical Sciences (SICS), A*STAR, Singapore, Singapore
| | - Sam Virtue
- University of Cambridge Metabolic Research Laboratories, Cambridge, UK
| | | | - E Shyong Tai
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, 117599, Singapore, Singapore.,Department of Medicine, National University Health System, Singapore, Singapore.,DUKE-National University of Singapore Medical School, Singapore, Singapore
| | - Chin Meng Khoo
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, 117599, Singapore, Singapore.,Department of Medicine, National University Health System, Singapore, Singapore.,DUKE-National University of Singapore Medical School, Singapore, Singapore
| | - Sue-Anne Toh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, 117599, Singapore, Singapore. .,Department of Medicine, National University Health System, Singapore, Singapore. .,DUKE-National University of Singapore Medical School, Singapore, Singapore. .,Perelman School of Medicine, University of Pennsylvania, Pennsylvania, USA.
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El-Dosouky I, Polte CL, Okubo T, Gonzalez Gomez A, Liu B, Generati G, Drakopoulou M, Olmos C, Trifunovic D, Ilhao Moreira R, Ilhao Moreira R, Morgan HP, Bosseau C, Romano G, Argiolas A, Kuperstein R, Koyuncu A, Sahara E, Spinelli L, Yaneva-Sirakova T, Ben Said R, Nowakowska MA, Ruivo C, Neves Pestana G, Wiligorska N, Gao SA, Lagerstrand KM, Johnsson ÅA, Bech-Hanssen O, Mahara K, Yamamoto H, Shitan H, Abe K, Terada M, Saito M, Nagatomo Y, Takanashi S, Del Val D, Monteagudo JM, Fernandez-Golfin C, Hinojar R, Garcia A, Marco A, Casas E, Jimenez-Nacher JJ, Zamorano JL, Baig S, Hayer M, Edwards N, Steeds R, Bandera F, Alfonzetti E, Guazzi M, Toutouzas K, Stathogiannis K, Michelongona A, Latsios G, Synetos A, Lazaros G, Brili S, Tsiamis E, Tousoulis D, Islas F, Ferrera C, Sanchez-Enrique C, Freitas-Ferraz A, Mahia P, Marcos-Alberca P, Tirado G, Perez De Isla L, Vilacosta I, Marinkovic J, Obrenovic- Kircanski B, Ivanovic B, Kalimanovska-Ostric D, Stevanovic G, Petrovic M, Boricic-Kostic M, Petrovic O, Tutos V, Petrovic I, Petrovic J, Draganic G, Stepanovic J, Vujisic-Tesic B, Coutinho Cruz M, Moura Branco L, Galrinho A, Coutinho Miranda L, Almeida Morais L, Modas Daniel P, Rodrigues I, Fragata J, Cruz Ferreira R, Coutinho Cruz M, Moura Branco L, Galrinho A, Timoteo AT, Viveiros Monteiro S, Aguiar Rosa S, Rodrigues I, Fragata J, Cruz Ferreira R, Nana M, Constantin C, Tarando F, Galli E, Rousseau C, Hubert A, Leclercq C, Donal E, Vitale G, Agnese V, Mina' C, Magro S, Falletta C, Di Gesaro G, Bellavia D, Clemenza F, Elena Reffo ER, Ornella Milanesi OM, Klempfner R, Ben-Zekry S, Maor E, Raanani E, Ofek E, Freimark D, Arad M, Oflar E, Ciftci S, Ungan I, Caglar FM, Ocal L, Kilicgedik A, Toprak C, Kahveci G, Atmadikoesoemah C, Kasim M, Pellegrino T, Pisani A, Giudice CA, Riccio E, Imbriaco M, Cuocolo A, Trimarco B, Tarnovska-Kadreva R, Traykov L, Vassilev D, Vladimirova L, Shumkova M, Gruev I, Zairi I, Mzoughi K, Ben Moussa F, Kammoun S, Fennira S, Kraiem S, Chrzanowski L, Frynas-Jonczyk K, Wdowiak-Okrojek K, Wejner-Mik P, Lipiec P, Krakowska M, Potemski P, Plonska-Gosciniak E, Kasprzak JD, Marques N, Domingues K, Lourenco C, Santos R, Gomes C, Abreu L, Reis L, Moz M, Azevedo O, Tavares-Silva M, Sousa C, Pinto R, Ribeiro V, Vasconcelos M, Bernardo-Almeida P, Macedo F, Maciel MJ, Wiligorska D, Talarowska P, Segiet A, Mozenska O, Kosior DA. P1088Match and mismatch between opening area and resistance in mild and moderate rheumatic mitral stenosisP1089When should cardiovascular magnetic resonance imaging be considered in patients with chronic aortic or mitral regurgitation?P1090Echocardiographic characteristics of aortic valve fenestration with aortic regurgitation for aortic valve repairP1091Aortic regurgitation assessment by 3D transesophageal echocardiography vena contracta area: usefulness and comparison with 2D methods.P1092Characterising cardiomyopathy in mitral regurgitation due to barlow disease: role of CMRP1093Compensatory peripheral increase in artero-venous o2 difference to severe functional mitral regurgitation in heart failureP1094Prognostic impact of concomitant atrioventricular valve regurgitation in patients undergoing transcatheter aortic valve implantationP1095Morphological characterization of vegetations by real-time three-dimensional transesophageal echocardiography in infective endocarditis: prognostic impactP1096Relation between causative pathogen and echocardiographic findings in patients with infective endocarditis: is there an association and is it clinically relevant?P1097Aortic and mitral valve infective endocarditis: different clinical and echocardiographic features and peculiar complication ratesP1098Vegetation size relevance and impact on prognosis in patients with infective endocarditisP1099Causes of death on the valvular heart disease surveillance list- a 5 year auditP1100Left ventricular non-compaction and idiopathic dilated cardiomyopathy: the significant diagnostic value of longitudinal strainP1101The role of echocardiography in the management of diuretics withdrawal in patients with chronic heart failure and severely reduced ejection fraction: a prospective cohort studyP1102Outcomes in paediatric new onset left ventricle dysfunction and dilatation: differences between post-myocarditis and DCMP1103De novo mitral regurgitation as a cause of heart failure exacerbation in hypertrophic cardiomyopathyP1104Correlation of conventional and new echocardiograhic parameters with sudden cardiac death risk score in patients with hypertrophic cardiomyopathyP1105Inverse correlation between myocardial fibrosis and left ventricular function in rheumatic mitral stenosis: a preliminary study with cardiac magnetic resonanceP1106Left ventricular diastolic dysfunction and cardiac sympathetic derangement in patients with Anderson-Fabry disease: a 2D speckle tracking echocardiography and cardiac 123I-MIBG studyP1107Left ventricular hypertrophy and mild cognitive impairment as markers for target organ damage in hypertensive patients with multiple risk factorsP1108Subclinical left ventricular dysfunction in asymptomatic type 1 diabetic childrenP1109Minimal differences shown by echocardiography and NT-proBNP level distinguishing cardiotoxic effect related to breast cancer therapy in patients with or without HER2 expression.P1110Speed of recovery of left ventricular function is not related to the prognosis of takotsubo cardiomyopathy - a portuguese multicenter studyP1111Myocardial dysfunction in Takotsubo cardiomyopathy - more than meets the eye?P1112Obstructive sleep apnea and echocardiographic parameters. Eur Heart J Cardiovasc Imaging 2016; 17:ii227-ii234. [DOI: 10.1093/ehjci/jew262.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Wassmuth R, Hristova K, Monney P, Olander RFW, Rodriguez Munoz D, Huayan X, Pagourelias E, Loardi C, Moreno J, Miljkovic T, Takase H, Latet SC, Henquin R, America R, Carter-Storch R, Panelo ML, Fernandez-Golfin C, Cho IJ, Petrini J, Buonauro A, Liu B, Mapelli M, Tamulenaite E, De Chiara B, Minden H, Kostova V, Nesheva N, Katova TZ, Bojadzhiev L, Crisinel V, Reverdin S, Conti L, Mach F, Mueller H, Jeanrenaud X, Bochud M, Ehret G, Sundholm JKM, Ojala T, Andersson S, Sarkola T, Moya Mur JL, Berlot B, Fernandez-Golfin C, Moreno Planas J, Casas Rojo E, Garcia Martin A, Jimenez Nacher JJ, Hernandez-Madrid A, Franco Diez E, Matia Frances R, Zamorano JL, Zhigang YANG, Yingkun GUO, Jing CHEN, Duchenne J, Mirea O, Triantafyllis A, Michalski B, Vovas G, Delforge M, Van Cleemput J, Bogaert J, Voigt JU, Saccocci M, Tamborini G, Veglia F, Pepi M, Alamanni F, Zanobini M, Zuniga Sedano JJ, Alexanderson E, Martinez C, Bjelobrk M, Pavlovic K, Ilic A, Colakovic S, Dodic S, Tanaka T, Machii M, Nonaka D, Van Herck PL, Claeys MJ, Haine SE, Miljoen HP, Segers VF, Vandendriessche TR, De Winter BY, Hoymans VY, Vrints CJ, Lombardero M, Perea G, Miele MM, De Amicis DAV, Mannacio VAM, Dahl JS, Christensen NL, Soendergaard EV, Marcussen N, Moeller JE, Fernandez-Palomeque C, Garcia-Vega D, Mont-Girbau L, Pardo A, Izurieta C, Boretti I, Hinojar R, Gonzalez-Gomez A, Garcia Martin A, Casas E, Salido L, Barrios V, Ruiz S, Moya JL, Hernandez Antolin R, Jimenez Nacher JL, Zamorano JL, Chang HJ, Choi HH, Lee SY, Shim CY, Ha JW, Chung N, Ring M, Caidahl K, Eriksson MJ, Esposito R, Santoro C, Monteagudo JM, Trimarco B, Galderisi M, Zamorano JL, Baig S, Hayer M, Steeds R, Edwards N, Fusini L, Zagni P, Muratori M, Agostoni P, Tamborini G, Gripari P, Ghulam Ali S, Pepi M, Fiorentini C, Valuckiene Z, Jurkevicius R, Peritore A, Botta L, Belli O, Musca F, Casadei F, Russo C, Giannattasio C, Moreo A. Poster Session 6Assessment of morphology and functionP1222Multimodality imaging for left atrial appendage occluder sizingP1223Longitudinal left atrial strain is a main predictor for long term prognosis on atrial fibrillation after CABG operation patientsP1224Comparison of 2D and 3D left ventricular volumes measurements: results from the SKIPOGH II studyP1225Adjusting for thoracic circumference is superior to body surface area in the assessment of neonatal cardiac dimensions in foetal growth abnormalityP1226Maximal vortex suction pressure: an equivocal marker for optimization of atrio-ventricular delayP1227Volume-time curve of cardiac magnetic resonance assessed left ventricular dysfunction in coronary artery disease patients with type 2 diabetes mellitusP1228Thickness matters, but not in the same way for all strain parametersP1229Digging deeper in postoperative modifications of right ventricular function: impact of pericardial approach and cardioplegiaP1230Left atrial function evaluated by 2D-speckle tracking echocardiography in diabetes mellitus populationP1231The influence of arterial hypertension duration on left ventricular diastolic parameters in patients with well regulated arterial blood pressureP1232Investigation of factors affecting left ventricular diastolic dysfunction determined using mitral annulus velocityP1233High regulatory T-lymphocytes after ST-elevation myocardial infarction relate with adverse left ventricular remodelling assessed by 3D-echocardiographyP1234Prevalence of paradoxical low flow/low gradient severe aortic stenosis measure with 3 dimensional transesophageal echocardiographyP1235Coronary microvascular and diastolic dysfunctions after aortic valve replacement: comparison between mechanical and biological prosthesesP1236Normal-flow, low gradient aortic stenosis is common in a population of patients with severe aortic valve stenosis undergoing aortic valve replacementP1237Analysis of validity and reproducibility of calcium burden visual estimation by echocardiographyP12383D full automatic software in the evaluation of aortic stenosis severity in TAVI patients. Preliminary resultsP1239Differential impact of net atrioventricular compliance on clinical outcomes in patients with mitral stenosis according to cardiac rhythmP1240Aortic regurgitation affects the intima-media thickness of the right and left common carotid artery differentlyP1241Global longitudinal strain: an hallmark of cardiac damage in mitral valve regurgitation. Experience from the european registry of mitral regurgitationP1242Echocardiographic characterisation of Barlow's disease versus fibroelastic deficiencyP1243Echocardiographic screening for rheumatic heart disease in a ugandan orphanage - feasibility and outcomesP1244Alterations in right ventricular mechanics upon follow-up period in patients with persistent ischemic mitral regurgitation after inferoposterior myocardial infarctionP1245Ten-years conventional mitral surgery in patients with mitral regurgitation and left ventricular dysfunction: clinical and echocardiographic outcomes. Eur Heart J Cardiovasc Imaging 2016. [DOI: 10.1093/ehjci/jew266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Baig S, Parvaresh Rizi E, Shabeer M, Chhay V, Mok SF, Loh TP, Magkos F, Vidal-Puig A, Tai ES, Khoo CM, Toh SA. Metabolic gene expression profile in circulating mononuclear cells reflects obesity-associated metabolic inflexibility. Nutr Metab (Lond) 2016; 13:74. [PMID: 27800008 PMCID: PMC5081666 DOI: 10.1186/s12986-016-0135-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 10/18/2016] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Obesity is associated with an impaired ability to switch from fatty acid to glucose oxidation during the fasted to fed transition, particularly in skeletal muscle. However, whether such metabolic inflexibility is reflected at the gene transcription level in circulatory mononuclear cells (MNC) is not known. METHODS The whole-body respiratory quotient (RQ) and transcriptional regulation of genes involved in carbohydrate and lipid metabolism in MNC were measured during fasting and in response (up to 6 h) to high-carbohydrate and high-fat meals in nine lean insulin-sensitive and nine obese insulin-resistant men. RESULTS Compared to lean subjects, obese subjects had an impaired ability to increase RQ and switch from fatty acid to glucose oxidation following the high-carbohydrate meal (interaction term P < 0.05). This was accompanied by an impaired induction of genes involved in oxidative metabolism of glucose in MNC, such as phosphofructokinase (PFK), pyruvate dehydrogenase kinase 4 (PDK4), peroxisome proliferator-activated receptor alpha (PPARα) and uncoupling protein 3 (UCP3) and increased expression of genes involved in fatty acid metabolism, such as fatty acid translocase (FAT/CD36) and fatty acid synthase (FASN) (P < 0.05). On the contrary, there were no differences in the gene expression profiles between lean and obese subjects following the high-fat meal. CONCLUSIONS Postprandial expression profiles of genes involved in glucose and fatty acid metabolism in the MNC reflect the differing metabolic flexibility phenotypes of our cohort of lean and obese individuals. These differences in metabolic flexibility between the lean and obese are elicited by an acute meal challenge that is rich in carbohydrate but not fat.
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Affiliation(s)
- Sonia Baig
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, Singapore, 117599 Singapore
| | - Ehsan Parvaresh Rizi
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, Singapore, 117599 Singapore.,Department of Medicine, National University Health System, Singapore, Singapore
| | - Muhammad Shabeer
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, Singapore, 117599 Singapore
| | - Vanna Chhay
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, Singapore, 117599 Singapore
| | - Shao Feng Mok
- Department of Medicine, National University Health System, Singapore, Singapore
| | - Tze Ping Loh
- Department of Laboratory Medicine, National University Health System, Singapore, Singapore
| | - Faidon Magkos
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Singapore Institute of Clinical Sciences (SICS), ASTAR, Singapore, Singapore
| | | | - E Shyong Tai
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, Singapore, 117599 Singapore.,Department of Medicine, National University Health System, Singapore, Singapore.,Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Chin Meng Khoo
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, Singapore, 117599 Singapore.,Department of Medicine, National University Health System, Singapore, Singapore.,Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Sue-Anne Toh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, Singapore, 117599 Singapore.,Department of Medicine, National University Health System, Singapore, Singapore.,Duke-National University of Singapore Medical School, Singapore, Singapore.,Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
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Kular K, Prasad A, Ramana B, Baig S, Mahir Ozmen M, Valeti M, Ribeiro R, De Luca M, Apers J, Mahawar K. Petersen's hernia after mini (one anastomosis) gastric bypass. J Visc Surg 2016; 153:321. [DOI: 10.1016/j.jviscsurg.2016.05.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Rizi EP, Baig S, Toh SA, Loh TP, Khoo CM. Biological variation of glucose, insulin and lipids in lean, insulin-sensitive and obese, insulin-resistant Chinese males without diabetes. Pathology 2016; 48:510-2. [PMID: 27311872 DOI: 10.1016/j.pathol.2016.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 04/06/2016] [Accepted: 04/13/2016] [Indexed: 10/21/2022]
Affiliation(s)
- Ehsan Parvaresh Rizi
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Medicine, National University Health System, Singapore
| | - Sonia Baig
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Sue-Anne Toh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Medicine, National University Health System, Singapore; Duke-National University of Singapore Graduate Medical School, Singapore
| | - Tze Ping Loh
- Department of Laboratory Medicine, National University Health System, Singapore.
| | - Chin Meng Khoo
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Medicine, National University Health System, Singapore; Duke-National University of Singapore Graduate Medical School, Singapore
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Greulich S, Meloni A, Nazir SA, Stefan Biesbroek P, Arenja N, Kammerlander AA, Sayeed A, Ricci F, Bernhardt P, Meierhofer C, Devos DG, Ruecker B, Burkhardt B, Kamphuis VP, De Lazzari M, Nederend I, Dux-Santoy L, Cavalcante JL, Rosmini S, Liu B, Fent G, Claessen G, Behar J, Oebel S, Baritussio A, Ranjit Arnold J, Kitterer D, Latus J, Henes J, Kurmann R, Gloekler S, Wahl A, Buss S, Katus H, Bobbo M, Lombardi M, Braun N, Alscher M, Sechtem U, Mahrholdt H, Neri M, Preziosi P, Grassedonio E, Schicchi N, Keilberg P, Pulini S, Facchini E, Positano V, Pepe A, Shetye A, Khan JN, Singh A, Kanagala P, Swarbrick D, Gulsin G, Graham-Brown M, Squire I, Gershlick A, McCann GP, Amier RP, Teunissen PF, Robbers LF, Beek AM, van Rossum AC, Hofman MB, van Royen N, Nijveldt R, Riffel JH, Djiokou CN, Andre F, Fritz T, Halder M, Thomas Z, Korosoglou G, Katus HA, Buss SJ, Schwaiger ML, Duca F, Aschauer S, Marzluf BA, Zotter-Tufaro C, Dalos D, Pfaffenberger S, Bonderman D, Mascherbauer J, Fridman Y, Hackman B, Kadakkal A, Maanja M, Daya HA, Wong TC, Schelbert EB, Barison A, Todiere G, Gaeta R, Galllina S, Emdin M, De Caterina R, Aquaro G, Buckert D, Dyckmanns N, Rottbauer W, Kühn A, Shehu N, Müller J, Stern H, Ewert P, Fratz S, Vogt M, De Groote K, Babin D, Demulier L, Taeymans Y, Westenberg JJ, Van Bortel L, Segers P, Achten E, De Schepper J, Rietzschel E, Geiger J, Makki M, Burkhardt B, Kellenberger CJ, Buechel ERV, Kellenberger C, Geiger J, Ruecker B, Buechel EV, Elbaz MS, Kroft LJ, van der Geest RJ, de Roos A, Blom NA, Westenberg JJ, Roest AA, Cipriani A, Susana A, Rizzo S, Giorgi B, Carmelo L, Bertaglia E, Bauce B, Corrado D, Thiene G, Marra MP, Basso C, Iliceto S, Roest A, van den Boogaard P, ten Harkel A, de Geus J, Kroft L, de Roos A, Westenberg J, Kale R, Teixido-Tura G, Maldonado G, Huguet M, Garcia-Dorado D, Evangelista A, Rodriguez-Palomares J, Rijal S, Schindler JT, Gleason TG, Lee JS, Schelbert EB, Bulluck H, Treibel TA, Bhuva A, Abdel-Gadir A, Culotta V, Merghani A, Maestrini V, Herrey AS, Kellman P, Manisty C, Moon JC, Hayer M, Baig S, Shah T, Rooney S, Edwards N, Steeds R, Garg P, Swoboda P, Dobson L, Musa T, Foley J, Haaf P, Greenwood J, Plein S, Schnell F, Bogaert J, Dymarkowski S, Pattyn N, Claus P, Van Cleemput J, Gerche AL, Heidbuchel H, Toth D, Reiml S, Panayiotou M, Claridge S, Jackson T, Sohal M, Webb J, O'Neill M, Brost A, Mountney P, Razavi R, Rhode K, Rinaldi CA, Arya A, Hilbert S, Bollmann A, Hindricks G, Jahnke C, Paetsch I, Dinov B, Perazzolo Marra M, Ghosh Dastidar A, Rodrigues J, Zorzi A, Susana A, Scatteia A, De Garate E, Mattesi G, Strange J, Corrado D, Bucciarelli-Ducci C, Jerosch-Herold M, Karamitsos TD, Francis JM, Bhamra-Ariza P, Sarwar R, Choudhury R, Selvanayagam JB, Neubauer S. ORAL AB AGORA1362Cardiac Involvement in Patients With Different Rheumatic Disorders1366Gender differences in the development of cardiac complications: a multicentric prospective study in a large cohort of thalassemia major patients1646Comparison of T1-mapping, T2-weighted and contrast-enhanced cine imaging at 3.0T CMR for diagnostic oedema assessment in ST-segment elevation myocardial infarction1375Evaluation of Tissue Changes in Remote Noninfarcted Myocardium after Acute Myocardial Infarction using T1-mapping1377Right ventricular long axis strain – The prognostic value of a novel parameter in non-ischemic dilated cardiomyopathy using standard cardiac magnetic resonance imaging1389The role of the right ventricular insertion point in heart failure patients with preserved ejection fraction: Insights from a cardiovascular magnetic resonance study1398Myocardial fibrosis associates with B-type natriuretic peptide levels and outcomes more than wall stress1478Prognostic Value of Pulmonary Blood Volume by Contrast-Enhanced Magnetic Resonance Imaging in Heart Failure Outpatients – The PROVE-HF Study1370Magnetic Resonance Adenosine Perfusion Imaging as Gatekeeper of Invasive Coronary1509Influence of non-invasive hemodynamic CMR parameters on maximal exercise capacity in surgically untreated patients with Ebstein's anomaly1356Proximal aortic stiffening in Turner patients is more pronounced in the presence of a bicuspid valve. A segmental functional MRI study1503Flow pattern and vascular distensibility of the pulmonary arteries in patients after repair of tetralogy of Fallot. Insights from 4D flow CMR1516Myocardial deformation characteristics of the systemic right ventricle after atrial switch operation for transposition of the great arteries1633Three-dimensional vortex formation in patients with a Fontan circulation: evaluation with 4D flow CMR1483Mitral valve prolapse: arrhythmogenic substrates by cardiac magnetic imaging1596Increased local wall shear stress after coarctation repair is associated with descending aorta pulse wave velocity: evaluation with CMR and 4D flow1636Three-dimensional wall shear stress assessed by 4Dflow CMR in bicuspid aortic valve disease1464Cardiac Amyloidosis and Aortic Stenosis – The Convergence of Two Aging Processes1630Blood T1 variability explained in healthy volunteers: an analysis on MOLLI, ShMOLLI and SASHA1408Myocardial deformation on CMR predicts adverse outcomes in carcinoid heart disease - a new marker of risk1492Myocardial Perfusion Reserve and Global Longitudinal Strain in Early Rheumatoid Arthritis1500Exercise CMR to differentiate athlete's heart from patients with early dilated cardiomyopathy1559Real-Time, x-mri guidance to optimise left ventricular lead placement for delivery of cardiac resynchronisation therapy1560The role of Cardiac magnetic resonance imaging in patients undergoing ablation for ventricular tachycardia- Defining the substrate and visualizing the outcome1590Impact of cardiovascular magnetic resonance on clinical management and decision-making of out of hospital cardiac arrest survivors with inconclusive coronary angiogram1561Detection of coronary stenosis at rest using Oxygenation-Sensitive Magnetic Resonance Imaging. Eur Heart J Cardiovasc Imaging 2016. [DOI: 10.1093/ehjci/jew181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Baig S, Seevasant I, Mohamad J, Mukheem A, Huri HZ, Kamarul T. Potential of apoptotic pathway-targeted cancer therapeutic research: Where do we stand? Cell Death Dis 2016; 7:e2058. [PMID: 26775709 PMCID: PMC4816162 DOI: 10.1038/cddis.2015.275] [Citation(s) in RCA: 200] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 07/17/2015] [Accepted: 08/25/2015] [Indexed: 12/12/2022]
Abstract
Underneath the intricacy of every cancer lies mysterious events that impel the tumour cell and its posterity into abnormal growth and tissue invasion. Oncogenic mutations disturb the regulatory circuits responsible for the governance of versatile cellular functions, permitting tumour cells to endure deregulated proliferation, resist to proapoptotic insults, invade and erode normal tissues and above all escape apoptosis. This disruption of apoptosis has been highly implicated in various malignancies and has been exploited as an anticancer strategy. Owing to the fact that apoptosis causes minimal inflammation and damage to the tissue, apoptotic cell death-based therapy has been the centre of attraction for the development of anticancer drugs. Increased understanding of the molecular pathways underlying apoptosis has enabled scientists to establish unique approaches targeting apoptosis pathways in cancer therapeutics. In this review, we reconnoitre the two major pathways (intrinsic and extrinsic) targeted cancer therapeutics, steering toward chief modulators of these pathways, such as B-cell lymphoma 2 protein family members (pro- and antiapoptotic), inhibitor of apoptosis proteins, and the foremost thespian of extrinsic pathway regulator, tumour necrosis factor-related apoptosis-inducing agent. Together, we also will have a look from clinical perspective to address the agents (drugs) and therapeutic strategies adopted to target these specific proteins/pathways that have entered clinical trials.
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Affiliation(s)
- S Baig
- Department of Orthopaedic Surgery, Tissue Engineering Group, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
- Institute of Biological Sciences, Faculty of Science, University of Malaysia, Kuala Lumpur 50603, Malaysia
- Department of Orthopaedic Surgery, University of Malaya, Tissue Engineering Group, Faculty of Medicine, Kuala Lumpur 50603, Malaysia. Tel: +60 3 7967 7022; Fax: +60 3 7949 4642; E-mail: (SB) or Tel: +60 3 7949 2061; Fax: +60 3 7949 4642; E-mail: (TK)
| | - I Seevasant
- Department of Orthopaedic Surgery, Tissue Engineering Group, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - J Mohamad
- Institute of Biological Sciences, Faculty of Science, University of Malaysia, Kuala Lumpur 50603, Malaysia
| | - A Mukheem
- Department of Orthopaedic Surgery, Tissue Engineering Group, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - H Z Huri
- Clinical Investigation Centre, University of Malaya Medical Centre, Kuala Lumpur 50603, Malaysia
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - T Kamarul
- Department of Orthopaedic Surgery, Tissue Engineering Group, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
- Clinical Investigation Centre, University of Malaya Medical Centre, Kuala Lumpur 50603, Malaysia
- Department of Orthopaedic Surgery, University of Malaya, Tissue Engineering Group, Faculty of Medicine, Kuala Lumpur 50603, Malaysia. Tel: +60 3 7967 7022; Fax: +60 3 7949 4642; E-mail: (SB) or Tel: +60 3 7949 2061; Fax: +60 3 7949 4642; E-mail: (TK)
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Besnault S, Martin-Ruel S, Baig S, Heiniger B, Esperanza M, Budzinski H, Miège C, Le Menach K, Dherret L, Roussel-Galle A, Coquery M. Évaluation technique, économique et environnementale de procédés de traitement complémentaire avancés pour l’élimination des micropolluants. ACTA ACUST UNITED AC 2015. [DOI: 10.1051/tsm/201503067] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Baig S, Jahan N, Shah M, Ahmed A, Shah SM. Alarming trends in type 2 diabetes mellitus – from the mountains of Pakistan to the plains of the United Arab Emirates. HAMDAN MEDICAL JOURNAL 2015. [DOI: 10.7707/hmj.494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Baig S, Kothandaraman N, Manikandan J, Rong L, Ee KH, Hill J, Lai CW, Tan WY, Yeoh F, Kale A, Su LL, Biswas A, Vasoo S, Choolani M. Proteomic analysis of human placental syncytiotrophoblast microvesicles in preeclampsia. Clin Proteomics 2014; 11:40. [PMID: 25469110 PMCID: PMC4247627 DOI: 10.1186/1559-0275-11-40] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 10/29/2014] [Indexed: 12/20/2022] Open
Abstract
Background Placental syncytiotrophoblast microvesicles (STBM) are shed into the maternal circulation during normal pregnancy. STBM circulate in significantly increased amounts in preeclampsia (PE) and are considered to be among contributors to the exaggerated proinflammatory, procoagulant state of PE. However, protein composition of STBM in normal pregnancy and PE remains unknown. We therefore sought to determine the protein components of STBM and whether STBM protein expressions differ in preeclamptic and normal pregnancies. Patients with PE (n = 3) and normal pregnant controls (n = 6) were recruited. STBM were prepared from placental explant culture supernatant. STBM proteins were analyzed by a combination of 1D Gel-LC-MS/MS. Protein expressions levels were quantified using spectral counts and validated by immunohistochemistry. Results Over 400 proteins were identified in the STBM samples. Among these, 25 proteins were found to be differentially expressed in preeclampsia compared to healthy pregnant controls, including integrins, annexins and histones. Conclusion STBM proteins include those that are implicated in immune response, coagulation, oxidative stress, apoptosis as well as lipid metabolism pathways. Differential protein expressions of STBM suggest their pathophysiological relevance in PE. Electronic supplementary material The online version of this article (doi:10.1186/1559-0275-11-40) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sonia Baig
- Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore & National University Health System, 10 Medical Drive, Singapore, 119260 Singapore
| | - Narasimhan Kothandaraman
- Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore & National University Health System, 10 Medical Drive, Singapore, 119260 Singapore
| | - Jayapal Manikandan
- Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore & National University Health System, 10 Medical Drive, Singapore, 119260 Singapore
| | - Li Rong
- Experimental Therapeutic Center, Agency for Science, Technology and Research, 31 Biopolis Way, Singapore, 138669 Singapore
| | - Kim Huey Ee
- Experimental Therapeutic Center, Agency for Science, Technology and Research, 31 Biopolis Way, Singapore, 138669 Singapore
| | - Jeffrey Hill
- Experimental Therapeutic Center, Agency for Science, Technology and Research, 31 Biopolis Way, Singapore, 138669 Singapore
| | - Chin Wee Lai
- Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore & National University Health System, 10 Medical Drive, Singapore, 119260 Singapore
| | - Wan Yu Tan
- Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore & National University Health System, 10 Medical Drive, Singapore, 119260 Singapore
| | - Felicia Yeoh
- Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore & National University Health System, 10 Medical Drive, Singapore, 119260 Singapore
| | - Anita Kale
- Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore & National University Health System, 10 Medical Drive, Singapore, 119260 Singapore
| | - Lin Lin Su
- Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore & National University Health System, 10 Medical Drive, Singapore, 119260 Singapore
| | - Arijit Biswas
- Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore & National University Health System, 10 Medical Drive, Singapore, 119260 Singapore
| | - Sheila Vasoo
- Division of Rheumatology, Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore & National University Health System, 10 Medical Drive, Singapore, 119260 Singapore
| | - Mahesh Choolani
- Division of Maternal-Fetal Medicine, Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore & National University Health System, 10 Medical Drive, Singapore, 119260 Singapore
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Ado JM, Etsano A, Shuaib F, Damisa E, Mkanda P, Gasasira A, Banda R, Korir C, Johnson T, Dieng B, Corkum M, Enemaku O, Mataruse N, Ohuabunwo C, Baig S, Galway M, Seaman V, Wiesen E, Vertefeuille J, Ogbuanu IU, Armstrong G, Mahoney FJ. Progress Toward Poliomyelitis Eradication in Nigeria. J Infect Dis 2014; 210 Suppl 1:S40-9. [DOI: 10.1093/infdis/jiu318] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Shah SA, Qayyum S, Abro R, Baig S, Creswell J. Active contact investigation and treatment support: an integrated approach in rural and urban Sindh, Pakistan. Int J Tuberc Lung Dis 2014; 17:1569-74. [PMID: 24200270 DOI: 10.5588/ijtld.13.0169] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Although household contacts of persons with tuberculosis (TB) have high rates of active TB, contact investigations are often not conducted. We present the results from a large-scale active contact investigation combined with treatment support in Sindh, Pakistan. METHODS Trained lay workers visited consenting smear-positive index patient homes in seven urban and 15 rural facilities. People with suspected TB were provided free transport to diagnostic centres, and sputum samples were collected for microscopy. Those diagnosed with smear-positive TB were given food baskets and sent text reminders to promote adherence. RESULTS From 3037 index cases, 19,191 household contacts were screened for TB symptoms and 3478 (18.1%) symptomatic persons were identified. Of these, 2160 (62.1%) produced sputum samples on the spot for testing and 490 (22.7%) had smear-positive results. TB prevalence in urban households was 1504 per 100,000 population compared to 4044/100,000 in rural households (P < 0.001) and 2553/100,000 overall. Treatment success was high, with 80.4% cured and 17.6% completing treatment. DISCUSSION Lay workers given basic training can conduct active contact investigations and provide treatment support to improve case detection and treatment outcomes in urban and rural areas of Pakistan. In areas with high levels of undiagnosed TB, particularly in rural areas, contact investigation should be prioritised as a means of improving case detection and early diagnosis.
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Affiliation(s)
- S A Shah
- Bridge Consultants Foundation, Karachi, Pakistan
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Baig S, Taggart D, Altman D. 229 * MAJOR AND UNEXPLAINED VARIATIONS IN ELECTIVE CORONARY REVASCULARIZATION PRACTICES IN ENGLAND. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Baig S, Lim J, Fernandis A, Wenk M, Kale A, Su L, Biswas A, Vasoo S, Shui G, Choolani M. Lipidomic analysis of human placental Syncytiotrophoblast microvesicles in adverse pregnancy outcomes. Placenta 2013; 34:436-42. [DOI: 10.1016/j.placenta.2013.02.004] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 02/06/2013] [Accepted: 02/11/2013] [Indexed: 12/13/2022]
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Narasimhan K, Lin SL, Tong T, Baig S, Ho S, Sukumar P, Biswas A, Hahn S, Bajic VB, Choolani M. Maternal serum protein profile and immune response protein subunits as markers for non-invasive prenatal diagnosis of trisomy 21, 18, and 13. Prenat Diagn 2013; 33:223-31. [PMID: 23371439 DOI: 10.1002/pd.4047] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVES To use proteomics to identify and characterize proteins in maternal serum from patients at high-risk for fetal trisomy 21, trisomy 18, and trisomy 13 on the basis of ultrasound and maternal serum triple tests. METHODS We performed a comprehensive proteomic analysis on 23 trisomy cases and 85 normal cases during the early second trimester of pregnancy. Protein profiling along with conventional sodium dodecyl sulfate polyacrylamide gel electrophoresis/Tandem mass spectrometry analysis was carried out to characterize proteins associated with each trisomy condition and later validated using Western blot. RESULTS Protein profiling approach using surface enhanced laser desorption/ionization time-of-flight mass (SELDI-TOF/MS) spectrometry resulted in the identification of 37 unique hydrophobic proteomic features for three trisomy conditions. Using sodium dodecyl sulfate polyacrylamide gel electrophoresis followed by Matrix Assisted Laser Desorption Ionization - Time of Flight/Time of Flight (MALDI-TOF/TOF) and western blot, glyco proteins such as alpha-1-antitrypsin, apolipoprotein E, apolipoprotein H, and serum carrier protein transthyretin were identified as potential maternal serum markers for fetal trisomy condition. The identified proteins showed differential expression at the subunit level. CONCLUSIONS Maternal serum protein profiling using proteomics may allow non-invasive diagnostic testing for the most common trisomies and may complement ultrasound-based methods to more accurately determine pregnancies with fetal aneuploidies.
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Affiliation(s)
- Kothandaraman Narasimhan
- Diagnostic Biomarker Discovery Laboratory, Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University Health System, Singapore
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Winston A, Sujatha-Bhaskar S, Ndubaku O, Cobb M, Willoughby J, Hellman P, Khait L, Baig S. Indications for Type of Hysterectomy: A Comparison of Outcomes. J Minim Invasive Gynecol 2012. [DOI: 10.1016/j.jmig.2012.08.210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Vasoo S, Baig S, Kale A, Agarwwal A, Choolani M. Intravenous immunoglobulin therapy in patients with recurrent miscarriages: successful outcomes in a pre-selected cohort. J Reprod Immunol 2012. [DOI: 10.1016/j.jri.2012.03.463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Baig S, Vasoo S, Teh B, Ho S, Kothandaraman N, Lu J, Wenk M, Arquio C, Kale A, Su L, Biswas A, Choolani M. Immunomodulation by placental microvesicles in adverse pregnancy outcomes (preeclampsia and recurrent pregnancy loss). J Reprod Immunol 2012. [DOI: 10.1016/j.jri.2012.03.268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Baig S, Lyons T, Stepanian A. 12 Year Follow Up of 1000 Laparoscopic Supracervical Hysterectomies at a Single Center. J Minim Invasive Gynecol 2010. [DOI: 10.1016/j.jmig.2010.08.414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Baig S, Sinervo K, Albee R, Winer W. Laparoscopic Resection of Small Bowel for Endometriosis: A Retrospective Analysis of Demographics, Clinical Presentation, Prevalence, Procedure and Short and Long Term Follow Up. J Minim Invasive Gynecol 2010. [DOI: 10.1016/j.jmig.2010.08.368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Baig S, Ho SSY, Ng BL, Chiu L, Koay ESC, Leow GH, Gole L, Kothandaraman N, Chan J, Sun X, Chan YH, Rauff M, Su LL, Biswas A, Choolani M. Development of quantitative-fluorescence polymerase chain reaction for the rapid prenatal diagnosis of common chromosomal aneuploidies in 1,000 samples in Singapore. Singapore Med J 2010; 51:343-348. [PMID: 20505915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
INTRODUCTION We aimed to develop a rapid quantitative-fluorescence polymerase chain reaction (QF-PCR) to detect common foetal aneuploidies in the Singapore population within 48 hours of sample collection in order to alleviate parental anxiety. METHODS DNA from 1,000 foetal samples (978 amniotic fluids, 14 chorion villi and eight foetal blood samples) was analysed using a QF-PCR of 19 microsatellite markers located on chromosomes 13, 18, 21, X and Y. A total of 523 samples were archived before the QF-PCR analysis (archived), while QF-PCR was performed and the results obtained within 48 hours of sample collection in the remaining 477 samples (live). The results were confirmed with their respective karyotypes. RESULTS In total, 47 autosomal trisomies (T) were found: 30 among the archived (three T13, 12 T18, 15 T21) and 17 among the live (four T18, 13 T21) samples. The QF-PCR results were verified with their respective karyotypes. We achieved 100 percent sensitivity (lower 95 percent confidence interval [CI], 92.8 percent) and specificity (lower 95 percent CI, 99.5 percent), and the time taken from sample collection to the obtaining of results for the 477 live samples was less than 48 hours. CONCLUSION Prenatal diagnostic results of common chromosomal abnormalities can be released within 48 hours of sample collection using QF-PCR. Parental anxiety is alleviated and clinical management is enhanced with this short waiting time.
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Affiliation(s)
- S Baig
- Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, 5 Lower Kent Ridge Road, Singapore 119074
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