1
|
Ripa F, Ong A, Massella V, Johnston M, Pietropaolo A, Somani B. Role of ureteroscopy and stone treatment in management of recurrent UTIs: Prospective outcomes over a 10-year period. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00193-8] [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: 02/12/2023]
|
2
|
Ong A, Chedgy E. 895 Ensuring Quality Standard in the Introduction of a New Prostate Biopsy Service. Br J Surg 2022. [DOI: 10.1093/bjs/znac269.516] [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: 11/06/2022]
Abstract
Abstract
Aim
With the introduction of a fusion-guided prostate biopsy service at a university hospital, it was important to ensure that quality standards were being maintained. Cancer detection rates (CDR) of fusion-guided prostate biopsy were compared against the established precision point prostate biopsy service in the quality improvement project.
Method
Data was collected from patients undergoing precision point prostate biopsy between April - December 2020 to identify the quality standard. Data was collected for patients undergoing fusion-guided prostate biopsy at University Hospital Southampton between May - September 2021. Clinically significant cancer was defined according to Epstein criteria.
Results
The study included 514 precision point and 25 fusion-guided biopsies. 202 prostate cancers were identified from precision point biopsies setting a quality standard cancer detection rate of 39%, of which 88.6% were clinically significant. Fusion-guided biopsy detected 17 cancers giving a CDR of 68%, of which 32% were clinically significant.
Conclusions
This study demonstrated that fusion-guided prostate biopsy has a high cancer detection rate. However, more cancers were detected at earlier stages when compared with previous precision point biopsy. Further study is required to assess the long-term effects this will have on the cancer service.
Collapse
Affiliation(s)
- A Ong
- University Hospital Southampton , Southampton , United Kingdom
| | - E Chedgy
- University Hospital Southampton , Southampton , United Kingdom
| |
Collapse
|
3
|
Lee K, Le T, Lim R, Hanna G, Gee H, Vinod S, Dammak S, Palma D, Ong A, Yeghiaian-Alvandi R, Buck J, Hau E. PO-1276 A review into the radiological features predicting local recurrence post-SABR in patients with NSCLC. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03240-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
4
|
Wan R, Docherty C, Bhatti H, Shin H, Spector C, Thai B, Muller A, Martin A, Gile K, Liu A, Ong A, Chen H. TRACHEOSTOMY DISLODGEMENT: ARE OBESE PATIENTS AT INCREASED LONG -TERM RISK? Am J Surg 2022; 223:569-570. [DOI: 10.1016/j.amjsurg.2022.02.014] [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: 11/01/2022]
|
5
|
Wong R, Iyer P, Ong A, Bhattacharyya R, Looi W, Seng M, Chan M, Vijayakumari K, Pham T, Leung W, Tan A. Total Lymphatic Irradiation as Part of Conditioning in Pediatric Hematopoietic Stem Cell Transplantation: A Single Institution Experience From a Radiation Oncology Perspective. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
6
|
Barnsley J, Buckland G, Chan PE, Ong A, Ramos AS, Baxter M, Laskou F, Dennison EM, Cooper C, Patel HP. Pathophysiology and treatment of osteoporosis: challenges for clinical practice in older people. Aging Clin Exp Res 2021; 33:759-773. [PMID: 33742387 PMCID: PMC8084810 DOI: 10.1007/s40520-021-01817-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 02/13/2021] [Indexed: 12/12/2022]
Abstract
Osteoporosis, a common chronic metabolic bone disease is associated with considerable morbidity and mortality. As the prevalence of osteoporosis increases with age, a paralleled elevation in the rate of incident fragility fractures will be observed. This narrative review explores the origins of bone and considers physiological mechanisms involved in bone homeostasis relevant to management and treatment. Secondary causes of osteoporosis, as well as osteosarcopenia are discussed followed by an overview of the commonly used pharmacological treatments for osteoporosis in older people.
Collapse
Affiliation(s)
- J Barnsley
- Medicine for Older People, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - G Buckland
- Medicine for Older People, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - P E Chan
- Medicine for Older People, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - A Ong
- Medicine for Older People, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - A S Ramos
- Medicine for Older People, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - M Baxter
- Medicine for Older People, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - F Laskou
- MRC Lifecourse Epidemiology Centre, University of Southampton, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - E M Dennison
- MRC Lifecourse Epidemiology Centre, University of Southampton, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - C Cooper
- MRC Lifecourse Epidemiology Centre, University of Southampton, University Hospital Southampton NHS Foundation Trust, Southampton, UK
- University of Oxford, Oxford, UK
| | - Harnish P Patel
- Medicine for Older People, University Hospital Southampton NHS Foundation Trust, Southampton, UK.
- MRC Lifecourse Epidemiology Centre, University of Southampton, University Hospital Southampton NHS Foundation Trust, Southampton, UK.
- Academic Geriatric Medicine, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK.
- NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust and The University of Southampton, Southampton, UK.
| |
Collapse
|
7
|
Chen CL, Yong CC, Co JS, Chen CY, Ong A, Lin CC, Cheng YF. Staged ligation of large portosystemic collaterals in living donor liver transplantation using a small-for-size graft. Hepatobiliary Surg Nutr 2020; 9:555-557. [PMID: 32832519 DOI: 10.21037/hbsn-20-330] [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: 11/06/2022]
Affiliation(s)
- Chao-Long Chen
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung
| | - Chee-Chien Yong
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung
| | - Jeffrey Samuel Co
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung
| | - Chih-Yi Chen
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung
| | - Aldwin Ong
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung
| | - Chih-Che Lin
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung
| | - Yu-Fan Cheng
- Diagnostic Radiology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung
| |
Collapse
|
8
|
Kim JO, Hanumanthappa N, Chung YT, Beck J, Koul R, Bashir B, Cooke A, Dubey A, Butler J, Nashed M, Hunter W, Ong A. Does dissemination of guidelines alone increase the use of palliative single-fraction radiotherapy? Initial report of a longitudinal change management campaign at a provincial cancer program. Curr Oncol 2020; 27:190-197. [PMID: 32905177 PMCID: PMC7467795 DOI: 10.3747/co.27.6193] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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] [Indexed: 12/25/2022] Open
Abstract
Background Despite level 1 evidence demonstrating the equivalence of single-fraction radiotherapy (sfrt) and multiple-fraction radiotherapy (mfrt) for the palliation of painful bone metastases, sfrt remains underused. In 2015, to encourage the sustainable use of palliative radiation oncology resources, CancerCare Manitoba disseminated, to each radiation oncologist in Manitoba, guidelines from Choosing Wisely Canada (cwc) that recommend sfrt. We assessed whether dissemination of the guidelines influenced sfrt use in Manitoba in 2016, and we identified factors associated with mfrt. Methods All patients treated with palliative radiotherapy for bone metastasis in Manitoba from 1 January 2016 to 31 December 2016 were identified from the provincial radiotherapy database. Patient, treatment, and disease characteristics were extracted from the electronic medical record and tabulated by fractionation schedule. Univariable and multivariable logistic regression analyses were performed to identify risk factors associated with mfrt. Results In 2016, 807 patients (mean age: 70 years; range: 35-96 years) received palliative radiotherapy for bone metastasis, with 69% of the patients having uncomplicated bone metastasis. The most common primary malignancies were prostate (27.1%), lung (20.6%), and breast cancer (15.9%). In 62% of cases, mfrt was used-a proportion that was unchanged from 2015. On multivariable analysis, a gastrointestinal [odds ratio (or): 5.3] or lung primary (or: 3.3), complicated bone metastasis (or: 4.3), and treatment at a subsidiary site (or: 4.4) increased the odds of mfrt use. Conclusions Dissemination of cwc recommendations alone did not increase sfrt use by radiation oncologists in 2016. A more comprehensive knowledge translation effort is therefore warranted and is now underway to encourage increased uptake of sfrt in Manitoba.
Collapse
Affiliation(s)
- J O Kim
- Radiation Oncology, CancerCare Manitoba, Winnipeg
| | | | - Y T Chung
- Rady Faculty of Health Sciences, University of Manitoba, Winnipeg
| | - J Beck
- Medical Physics, CancerCare Manitoba, Winnipeg
| | - R Koul
- Radiation Oncology, CancerCare Manitoba, Winnipeg
| | - B Bashir
- Radiation Oncology, CancerCare Manitoba, Winnipeg
| | - A Cooke
- Radiation Oncology, CancerCare Manitoba, Winnipeg
| | - A Dubey
- Radiation Oncology, CancerCare Manitoba, Winnipeg
| | - J Butler
- Radiation Oncology, CancerCare Manitoba, Winnipeg
| | - M Nashed
- Radiation Oncology, CancerCare Manitoba, Winnipeg
| | - W Hunter
- Radiation Oncology, Western Manitoba Cancer Centre, Brandon, MB
| | - A Ong
- Radiation Oncology, CancerCare Manitoba, Winnipeg
| |
Collapse
|
9
|
Magayr T, Streets A, Ong A. SAT-442 Identification of Exosome MicroRNAs as Novel Biomarkers for Rapid Disease Progression in Autosomal Dominant Polycystic Kidney Disease. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.469] [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: 10/24/2022] Open
|
10
|
De Silva K, Garikapati K, Ong A, Cooper M, Denniss A, Chow C. 478 Disparities in Time to Reperfusion in ST Elevation Myocardial Infarction (STEMI) at Extremes of Age. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.485] [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: 10/23/2022]
|
11
|
Kazi S, Ong A, Denniss A, Chow C. 554 Smoking Rates Among Patients With First Presentation ST Elevation Myocardial Infarction (STEMI). Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.561] [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: 10/23/2022]
|
12
|
Durkie M, Chong J, Ong A. SAT-334 GENETIC TESTING OF FAMILIES WITH VERY EARLY ONSET POLYCYSTIC KIDNEY DISEASE REVEALS THE FUNCTIONAL SIGNIFICANCE OF HYPOMORPHIC VARIANTS. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.380] [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: 11/28/2022] Open
|
13
|
Roy S, Loblaw A, Cheung P, Chu W, Chung HT, Vesprini D, Ong A, Chowdhury A, Panjwani D, Pang G, Korol R, Davidson M, Ravi A, McCurdy B, Helou J, Zhang L, Mamedov A, Deabreu A, Quon HC. Prostate-specific Antigen Bounce After Stereotactic Body Radiotherapy for Prostate Cancer: A Pooled Analysis of Four Prospective Trials. Clin Oncol (R Coll Radiol) 2019; 31:621-629. [PMID: 31126725 DOI: 10.1016/j.clon.2019.05.001] [Citation(s) in RCA: 5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 03/05/2019] [Accepted: 04/01/2019] [Indexed: 12/21/2022]
Abstract
AIMS We conducted a pooled analysis of four prospective stereotactic body radiotherapy (SBRT) trials of low- and intermediate-risk prostate cancer to evaluate the incidence of prostate-specific antigen (PSA) bounce and its correlation with the time-dose-fraction schedule. The correlation between bounce with PSA response at 4 years (nadir PSA < 0.4 ng/ml) and biochemical failure-free survival (BFFS) was also explored. MATERIALS AND METHODS The study included four treatment groups: 35 Gy/five fractions once per week (QW) (TG-1; n = 84); 40 Gy/five fractions QW (TG-2; n = 100); 40 Gy/five fractions every other day (TG-3; n = 73); and 26 Gy/two fractions QW (TG-4; n = 30). PSA bounce was defined as a rise in PSA by 0.2 ng/ml (nadir + 0.2) or 2 ng/ml (nadir + 2.0) above nadir followed by a decrease back to nadir. Patients with fewer than three follow-up PSA tests were excluded from the pooled analysis. RESULTS In total, 287 patients were included, with a median follow-up of 5.0 years. The pooled 5-year cumulative incidence of bounce by nadir + 2.0 was 8%. The 2-year cumulative incidences of PSA bounce by nadir + 0.2 were 28.9, 21, 19.6 and 16.7% (P = 0.12) and by nadir + 2.0 were 7.2, 8, 2.7 and 6.7% (P = 0.32) for TG-1 to TG-4, respectively. Multivariable analysis revealed that for nadir + 2.0, pre-treatment PSA (odds ratio 0.49; 95% confidence interval 0.26-0.97) correlated with PSA bounce. Although PSA bounce by nadir + 0.2 (odds ratio 0.10; 95% confidence interval 0.04-0.24) and nadir + 2.0 (odds ratio 0.29; 95% confidence interval 0.09-0.93) was associated with a lower probability of PSA response at 4 years, there was no association between bounce by nadir + 0.2 (hazard ratio 0.36; 95% confidence interval 0.08-1.74) or nadir + 2 (hazard ratio 1.77; 95% confidence interval 0.28-11.07) with BFFS. CONCLUSION The incidence of PSA bounce was independent of time-dose-fraction schedule for prostate SBRT. One in 13 patients experienced a bounce high enough to be misinterpreted as biochemical failure, and clinicians should avoid early salvage interventions in these patients. There was no association between PSA bounce and BFFS.
Collapse
Affiliation(s)
- S Roy
- Tom Baker Cancer Center, Department of Oncology, University of Calgary, Calgary, Canada
| | - A Loblaw
- Odette Cancer Center, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
| | - P Cheung
- Odette Cancer Center, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
| | - W Chu
- Odette Cancer Center, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
| | - H T Chung
- Odette Cancer Center, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
| | - D Vesprini
- Odette Cancer Center, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
| | - A Ong
- CancerCare Manitoba, University of Manitoba, Winnipeg, Canada
| | - A Chowdhury
- CancerCare Manitoba, University of Manitoba, Winnipeg, Canada
| | | | - G Pang
- Odette Cancer Center, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
| | - R Korol
- Odette Cancer Center, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
| | - M Davidson
- Odette Cancer Center, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
| | - A Ravi
- Odette Cancer Center, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
| | - B McCurdy
- CancerCare Manitoba, University of Manitoba, Winnipeg, Canada
| | - J Helou
- Princess Margaret Cancer Center, University of Toronto, Toronto, Canada
| | - L Zhang
- Odette Cancer Center, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
| | - A Mamedov
- Odette Cancer Center, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
| | - A Deabreu
- Odette Cancer Center, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
| | - H C Quon
- Tom Baker Cancer Center, Department of Oncology, University of Calgary, Calgary, Canada.
| |
Collapse
|
14
|
Kazi S, Narayan A, Ong A, Denniss A, Tanous D, Sivagangabalan G, Chong J, Wynne D, Thakkar J, Kovoor P, Fahmy P, Chow C. Trends in Cardiovascular Risk Factors in STEMI Patients at an Urban Centre. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.566] [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]
|
15
|
Almeida DM, Sin NL, Ong A. THE BENEFITS OF ENCOUNTERING STRESS: EXPLORING THE POSITIVE CORRELATES OF DAILY STRESS. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2187] [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: 11/13/2022] Open
Affiliation(s)
- D M Almeida
- Pennsylvania State University, University Park, Pennsylvania
| | - N L Sin
- University of British Columbia, Vancouver, British Columbia
| | - A Ong
- Cornell University, Ithaca, New York
| |
Collapse
|
16
|
Ada C, Ong A. Comparing Patterns of Intravascular Ultrasound and Optical Coherence Tomography Daily Use in Practice. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.1017] [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]
|
17
|
Burgess S, Bing R, Zhao J, Papapostolou S, Chan W, Juergens C, Ong A, Kurup R, Ng M, Kritharides L, Lo S, Yong A. A Rapidly Applicable Simplified SYNTAX Score Retains High Sensitivity and Specificity in Complex Coronary Artery Disease: A Multicentre Study. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.878] [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: 10/28/2022]
|
18
|
Trivedi S, Cooper M, Ong A, Tanous D, Changsiri B, Burgess D, Denniss R. Very Low Incidence of Ischaemic Stroke Associated with Thrombus Aspiration in a Large Series of STEMI Patients Treated with Primary PCI. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.133] [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: 10/19/2022]
|
19
|
O'Connor KS, Read SA, Wang M, Schibeci S, Eslam M, Ong A, Weltman MD, Douglas MW, Mazzola A, Craxì A, Petta S, Stewart GJ, Liddle C, George J, Ahlenstiel G, Booth DR. IFNL3/4 genotype is associated with altered immune cell populations in peripheral blood in chronic hepatitis C infection. Genes Immun 2016; 17:328-34. [PMID: 27307212 PMCID: PMC5399140 DOI: 10.1038/gene.2016.27] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/05/2016] [Accepted: 05/06/2016] [Indexed: 12/15/2022]
Abstract
Single-nucleotide polymorphisms near the interferon lambda 3 (IFNL3) gene predict outcomes to infection and anti-viral treatment in hepatitis C virus (HCV) infection. To identify IFNL3 genotype effects on peripheral blood, we collected phenotype data on 400 patients with genotype 1 chronic hepatitis C (CHC). The IFNL3 responder genotype predicted significantly lower white blood cells (WBCs), as well as lower absolute numbers of monocytes, neutrophils and lymphocytes for both rs8099917 and rs12979860. We sought to define the WBC subsets driving this association using flow cytometry of 67 untreated CHC individuals. Genotype-associated differences were seen in the ratio of CD4CD45RO+ to CD4CD45RO-; CD8CD45RO+ to CD8CD45RO-, NK CD56 dim to bright and monocyte numbers and percentages. Whole blood expression levels of IFNL3, IFNLR1 (interferon lambda receptor 1), IFNLR1-mem (a membrane-associated receptor), IFNLR1-sol (a truncated soluble receptor), MxA and T- and NK (natural killer) cell transcription factors TBX21, GATA3, RORC, FOXP3 and EOMES in two subjects were also determined. CHC patients demonstrated endogenous IFN activation with higher levels of MxA, IFNLR1, IFNLR1-mem and IFNLR1-sol, and IFNL3 genotype-associated differences in transcription factors. Taken together, these data provide evidence of an IFNL3 genotype association with differences in monocyte, T- and NK cell levels in the peripheral blood of patients with CHC. This could underpin genotype associations with spontaneous and treatment-induced HCV clearance and hepatic necroinflammation.
Collapse
Affiliation(s)
- K S O'Connor
- Centre for Immunology and Allergy Research, Westmead Institute for Medical Research, University of Sydney, Sydney, NSW, Australia
| | - S A Read
- Storr Liver Centre, Westmead Institute for Medical Research and Westmead Hospital, University of Sydney, Sydney, NSW, Australia
| | - M Wang
- Centre for Immunology and Allergy Research, Westmead Institute for Medical Research, University of Sydney, Sydney, NSW, Australia
| | - S Schibeci
- Centre for Immunology and Allergy Research, Westmead Institute for Medical Research, University of Sydney, Sydney, NSW, Australia
| | - M Eslam
- Storr Liver Centre, Westmead Institute for Medical Research and Westmead Hospital, University of Sydney, Sydney, NSW, Australia
| | - A Ong
- Storr Liver Centre, Westmead Institute for Medical Research and Westmead Hospital, University of Sydney, Sydney, NSW, Australia
- Centre for Infectious Diseases and Microbiology, Marie Bashir Institute for Infectious Diseases and Biosecurity, University of Sydney and Westmead Hospital, Sydney, NSW, Australia
| | - M D Weltman
- Department of Gastroenterology and Hepatology, Nepean Hospital, Sydney, NSW, Australia
| | - M W Douglas
- Storr Liver Centre, Westmead Institute for Medical Research and Westmead Hospital, University of Sydney, Sydney, NSW, Australia
- Centre for Infectious Diseases and Microbiology, Marie Bashir Institute for Infectious Diseases and Biosecurity, University of Sydney and Westmead Hospital, Sydney, NSW, Australia
| | - A Mazzola
- Sezione di Gastroenterologia, Di.Bi.M.I.S., University of Palermo, Palermo, Italy
| | - A Craxì
- Sezione di Gastroenterologia, Di.Bi.M.I.S., University of Palermo, Palermo, Italy
| | - S Petta
- Sezione di Gastroenterologia, Di.Bi.M.I.S., University of Palermo, Palermo, Italy
| | - G J Stewart
- Centre for Immunology and Allergy Research, Westmead Institute for Medical Research, University of Sydney, Sydney, NSW, Australia
| | - C Liddle
- Storr Liver Centre, Westmead Institute for Medical Research and Westmead Hospital, University of Sydney, Sydney, NSW, Australia
| | - J George
- Storr Liver Centre, Westmead Institute for Medical Research and Westmead Hospital, University of Sydney, Sydney, NSW, Australia
| | - G Ahlenstiel
- Storr Liver Centre, Westmead Institute for Medical Research and Westmead Hospital, University of Sydney, Sydney, NSW, Australia
| | - D R Booth
- Centre for Immunology and Allergy Research, Westmead Institute for Medical Research, University of Sydney, Sydney, NSW, Australia
| |
Collapse
|
20
|
Quon H, Ong A, Cheung P, Chu W, Chung H, Vesprini D, Chowdhury A, Panjwani D, Pang G, Korol R, Davidson M, Ravi A, McCurdy B, Zhang L, Bucher O, Mamedov A, Deabreu A, Lylyk E, Loblaw D. PATRIOT Trial: Randomized Phase 2 Study of Prostate Stereotactic Body Radiation Therapy Comparing 11 Versus 29 Days Overall Treatment Time. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.473] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
21
|
McEwan P, Bennett Wilton H, Robinson P, Hadimeri H, Ong A, Ørskov B, Peces R, Sandford R, Scolari F, Walz G, Woon C, O'Reilly K. Development Of A Model To Predict Disease Progression In Autosomal Dominant Polycystic Kidney Disease (ADPKD). Value Health 2014; 17:A564. [PMID: 27201867 DOI: 10.1016/j.jval.2014.08.1870] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- P McEwan
- Swansea Centre for Health Economics, Swansea, UK
| | | | - P Robinson
- Otsuka Pharmaceutical Europe Ltd, Wexham, UK
| | - H Hadimeri
- Department of Nephrology, Kärnsjukhuset, Skövde, Sweden
| | - A Ong
- Academic Nephrology Unit, Department of Infection and Immunity, The University of Sheffield Medical School, UK
| | - B Ørskov
- Department of Medicine, Renal Division, Copenhagen University Hospital, Roskilde, Denmark
| | - R Peces
- Hospital Universitario La Paz, Madrid, Spain
| | - R Sandford
- Academic Laboratory of Medical Genetics, Addenbrooke's Treatment Centre, Cambridge, UK
| | - F Scolari
- Department of Nephrology, University of Brescia, Italy
| | - G Walz
- Department of Nephrology, University Medical Centre Freiburg, Zentrale Klinische Forschung, Freiburg, Germany
| | - C Woon
- McCann Complete Medical, Macclesfield, UK
| | - K O'Reilly
- Otsuka Pharmaceutical Europe Ltd, Wexham, UK
| |
Collapse
|
22
|
Weeks J, Mooney P, Lipscomb G, Pearson JM, Ong A, Singh S. An unexpected finding on gastroscopy: gastro-gastric fistula with Helicobacter pylori and Giardia lamblia. Endoscopy 2014; 45 Suppl 2 UCTN:E118. [PMID: 23716087 DOI: 10.1055/s-0032-1326259] [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: 12/10/2022]
Affiliation(s)
- J Weeks
- Department of Gastroenterology, Royal Bolton Hospital NHS Foundation Trust, Bolton, United Kingdom
| | | | | | | | | | | |
Collapse
|
23
|
Ong A, Berengut JC, Flambaum VV. Optical Transitions in Highly Charged Ions for Detection of Variations in the Fine-Structure Constant. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/978-3-642-45201-7_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
|
24
|
Master Z, Ong A, Tuan J, Chin F. EP-1613: Effect of Dynamic Jaw on plan quality, dose fall-off, treatment time and integral dose in Tomotherapy plans. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31731-x] [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: 10/23/2022]
|
25
|
|
26
|
Ko AH, Tempero MA, Shan YS, Su WC, Lin YL, Dito E, Ong A, Wang YW, Yeh CG, Chen LT. A multinational phase 2 study of nanoliposomal irinotecan sucrosofate (PEP02, MM-398) for patients with gemcitabine-refractory metastatic pancreatic cancer. Br J Cancer 2013; 109:920-5. [PMID: 23880820 PMCID: PMC3749576 DOI: 10.1038/bjc.2013.408] [Citation(s) in RCA: 127] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 06/16/2013] [Accepted: 07/01/2013] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND PEP02, also known as MM-398, is a novel nanoliposomal irinotecan that has improved pharmacokinetics and tumour bio-distribution of the free drug. This phase 2 study evaluated PEP02 monotherapy as second-line treatment for pancreatic cancer. METHODS Patients who had metastatic pancreatic adenocarcinoma, Karnofsky performance status ≥70, and had progressed following gemcitabine-based therapy were eligible. Intravenous injection of PEP02 120 mg m(-2) was given every 3 weeks. Simon 2-stage design was used. The primary objective was 3-month survival rate (OS(3-month)). RESULTS A total of 40 patients were enrolled. The most common severe adverse events included neutropenia, abdominal pain, asthenia, and diarrhoea. Three patients (7.5%) achieved an objective response, with an additional 17 (42.5%) demonstrating stable disease for a minimum of two cycles. Ten (31.3%) of 32 patients with an elevated baseline CA19-9 had a >50% biomarker decline. The study met its primary end point with an OS(3-month) of 75%, with median progression-free survival and overall survival of 2.4 and 5.2 months, respectively. CONCLUSION PEP02 demonstrates moderate antitumour activity with a manageable side effect profile for metastatic, gemcitabine-refractory pancreatic cancer patients. Given the limited treatment options available to this patient population, a phase 3 trial of PEP02 (MM-398), referred to as NAPOLI-1, is currently underway.
Collapse
Affiliation(s)
- A H Ko
- Division of Hematology/Oncology, Comprehensive Cancer Center, University of California, San Francisco, 1600 Divisadero Street, San Francisco, CA 94115, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Berengut JC, Flambaum VV, Ong A, Webb JK, Barrow JD, Barstow MA, Preval SP, Holberg JB. Limits on the dependence of the fine-structure constant on gravitational potential from white-dwarf spectra. Phys Rev Lett 2013; 111:010801. [PMID: 23862989 DOI: 10.1103/physrevlett.111.010801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Indexed: 06/02/2023]
Abstract
We propose a new probe of the dependence of the fine-structure constant α on a strong gravitational field using metal lines in the spectra of white-dwarf stars. Comparison of laboratory spectra with far-UV astronomical spectra from the white-dwarf star G191-B2B recorded by the Hubble Space Telescope Imaging Spectrograph gives limits of Δα/α=(4.2±1.6)×10(-5) and (-6.1±5.8)×10(-5) from FeV and NiV spectra, respectively, at a dimensionless gravitational potential relative to Earth of Δφ≈5×10(-5). With better determinations of the laboratory wavelengths of the lines employed these results could be improved by up to 2 orders of magnitude.
Collapse
Affiliation(s)
- J C Berengut
- School of Physics, University of New South Wales, Sydney, New South Wales 2052, Australia
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Riaz N, Salgado L, Katsoulakis E, Ong A, Ho F, Hu M, Wong R, Wolden S, Rao S, Lee N. Long-term Outcomes of Postoperative Radiation Therapy for Major Salivary Gland Tumors. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1343] [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: 11/15/2022]
|
29
|
Resende Salgado L, Riaz N, Katsoulakis E, Ong A, Ho F, Wong R, Wolden S, Rao S, Lee N. Surgery Followed by Postoperative Radiation Therapy for Minor Salivary Gland Tumors. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1338] [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]
|
30
|
Berengut JC, Dzuba VA, Flambaum VV, Ong A. Optical transitions in highly charged californium ions with high sensitivity to variation of the fine-structure constant. Phys Rev Lett 2012; 109:070802. [PMID: 23006353 DOI: 10.1103/physrevlett.109.070802] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Indexed: 06/01/2023]
Abstract
We study electronic transitions in highly charged Cf ions that are within the frequency range of optical lasers and have very high sensitivity to potential variations in the fine-structure constant, α. The transitions are in the optical range despite the large ionization energies because they lie on the level crossing of the 5f and 6p valence orbitals in the thallium isoelectronic sequence. Cf(16+) is a particularly rich ion, having several narrow lines with properties that minimize certain systematic effects. Cf(16+) has very large nuclear charge and large ionization energy, resulting in the largest α sensitivity seen in atomic systems. The lines include positive and negative shifters.
Collapse
Affiliation(s)
- J C Berengut
- School of Physics, University of New South Wales, Sydney, Australia
| | | | | | | |
Collapse
|
31
|
Ong A, Orozco F, Sheikh ES, Anmuth C, Alfaro A, Kathrins R, Grove GL, Zerweck C, Madden AM, Raspa R, Weis MT. An RCT on the effects of topical CGP on surgical wound appearance and residual scarring in bilateral total-knee arthroplasty patients. J Wound Care 2012; 20:592-8. [PMID: 22240886 DOI: 10.12968/jowc.2011.20.12.592] [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: 11/11/2022]
Abstract
OBJECTIVE To test the hypothesis that topically applied calcium glycerophosphate (CGP) would improve the appearance of the wound following bilateral knee replacement. METHOD Healthy patients, aged 45-75 years, scheduled for bilateral total-knee replacement surgery were recruited into the study. One knee was randomly assigned to the treatment group, while the contralateral knee was designated the control (standard care). Subjects were instructed to apply a preparation of 10% CGP in an aqueous lotion to the treated knee once daily for 42 days, starting at the third postoperative day. Functional sealing and cosmetic appearance of the incision were evaluated by two surgeons by direct examination of the patient and then by two experienced assessors from photographs. The investigators qualitatively scored the intensity and extent of erythema along the incision and over the entire knee, the appearance of visible oedema along the incision and over the knee, and the overall clinical impression of wound healing. All four assessors were blinded to the subjects' allocation and the latter two assessors to the initial investigators' assessments. Subjects were also followed up for an additional 46 weeks, giving a total study duration of 12 months. RESULTS Twenty patients completed the study. Statistical analysis showed that both the area and intensity of erythema along the incision were significantly reduced in the treated vs untreated knee over the entire study period. The analysis further showed that treatment significantly reduced oedema, both along the incision and across the entire knee. The differences were most marked at the seventh postoperative day and diminished with time. No adverse effects were observed for any patient, in either treated or untreated knees. CONCLUSION These data demonstrate that postoperative application of 10% CGP could improve the appearance of the wound following total knee arthroplasty.
Collapse
Affiliation(s)
- A Ong
- Rothman Institute, Philadelphia, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Muir MT, Inaba K, Ong A, Barmparas G, Branco BC, Zubowicz EA, Salhanick M, Cohn SM. The need for early angiography in patients with penetrating renal injuries. Eur J Trauma Emerg Surg 2011; 38:275-80. [PMID: 26815959 DOI: 10.1007/s00068-011-0155-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Accepted: 08/25/2011] [Indexed: 11/29/2022]
Abstract
BACKGROUND Renal injuries occur in as many as 10% of penetrating abdominal wounds. Today, these wounds are often managed selectively, but there is little contemporary information on the natural history of kidney injuries after penetrating trauma. The purpose of this study was to examine the clinical outcomes of penetrating injuries to the kidney, and to determine if these patients may benefit from routine early angiography. METHODS All trauma patients admitted to three Level I Trauma Centers with penetrating renal injuries over a 10 year study period were retrospectively reviewed. RESULTS We identified 237 patients with a penetrating renal injury, of whom 39 died within the first 24 h and were excluded from analysis. Among the remaining 198 individuals, 130 (66%) underwent immediate exploratory laparotomy. Of the 68 subjects not undergoing immediate surgery, seven had early angiography. The remaining 61 patients (31%) were observed, with 12 (20%) ultimately requiring an intervention to treat the renal injury. Those subjects who failed nonoperative management had significantly fewer hospital-free days compared to those who did not need a procedure (19.2 ± 8.1 vs. 25.7 ± 4.5, p = 0.002). CONCLUSIONS Nearly one in three patients with penetrating renal injuries are currently managed with serial observation, although one in five of these subjects ultimately require either angiographic or surgical treatment. We feel that routine use of early angiography may reduce the failure rate and improve outcomes for patients whose penetrating renal injuries are managed nonoperatively.
Collapse
Affiliation(s)
- M T Muir
- Department of Surgery, University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, TX, 78229, USA
| | - K Inaba
- Department of Surgery, University of Southern California School of Medicine, Los Angeles, CA, USA
| | - A Ong
- Department of Surgery, Allegheny General Hospital, Pittsburgh, PA, USA
| | - G Barmparas
- Department of Surgery, University of Southern California School of Medicine, Los Angeles, CA, USA
| | - B C Branco
- Department of Surgery, University of Southern California School of Medicine, Los Angeles, CA, USA
| | - E A Zubowicz
- Department of Surgery, University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, TX, 78229, USA
| | - M Salhanick
- Department of Surgery, University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, TX, 78229, USA
| | - S M Cohn
- Department of Surgery, University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, TX, 78229, USA.
| |
Collapse
|
33
|
Quon H, Suderman D, Guilbert K, Lambert P, Ong A, Chowdhury A. Population-based Analysis of Referral Patterns for Adjuvant Radiotherapy after Radical Prostatectomy in Patients with Prostate Cancer. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.291] [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: 10/26/2022]
|
34
|
Ong A, Wong VWS, Wong GLH, Chan HY, Tse CH, Chan HLY. Management options for lamivudine-resistant chronic hepatitis B patients with suboptimal virological suppression by adefovir. Aliment Pharmacol Ther 2011; 34:972-81. [PMID: 21883327 DOI: 10.1111/j.1365-2036.2011.04833.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [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: 12/13/2022]
Abstract
BACKGROUND In chronic hepatitis B (CHB) patients, adefovir is commonly used as a rescue therapy for lamivudine resistance, but often results in incomplete virological suppression. AIM To study the factors predicting response to adefovir rescue, and the treatment response of tenofovir and entecavir in suboptimal responders to adefovir in CHB patients. METHODS Chronic hepatitis B patients who took adefovir for at least 6 months for lamivudine resistance were studied. Early virological response was defined as undetectable HBV DNA at month 6. Maintained virological response was defined as undetectable HBV DNA till the last follow-up. RESULTS Among 136 patients on adefovir for 39 (5-117) months, 30 (22%) had early virological response. The 3-year cumulative probability of maintained virological response was similar between patients on adefovir monotherapy (n = 53, 57.9%) and those on combination of lamivudine and adefovir treatment (n = 83, 56.5%). The month 6 HBV DNA was the only independent factor associated with maintained virological response (adjusted hazard ratio 0.49, 95% confidence interval 0.37-0.65, P < 0.001). Twenty-six of 30 (87%) early responders and 36 of 106 (34%) non-early responders had maintained virological response on adefovir (P < 0.001). Among 106 non-early responders, 18 and 11 were switched to tenofovir and entecavir, respectively. The 1-year cumulative probability of maintained virological response was higher in patients switched to tenofovir (87.5%) than those switched to entecavir (37.5%; P = 0.048) or continued with adefovir (8.7%; P < 0.001). CONCLUSIONS In adefovir rescue for lamivudine resistance, month 6 HBV DNA predicts maintained virological response in CHB patients. Switching to tenofovir achieved best viral suppression among suboptimal responders to adefovir.
Collapse
Affiliation(s)
- A Ong
- Institute of Digestive Disease, The Chinese University of Hong Kong; Hong Kong SAR, China
| | | | | | | | | | | |
Collapse
|
35
|
Berengut JC, Dzuba VA, Flambaum VV, Ong A. Electron-hole transitions in multiply charged ions for precision laser spectroscopy and searching for variations in α. Phys Rev Lett 2011; 106:210802. [PMID: 21699285 DOI: 10.1103/physrevlett.106.210802] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Indexed: 05/31/2023]
Abstract
We consider transitions of electron holes (vacancies in otherwise filled shells of atomic systems) in multiply charged ions that, due to level crossing of the holes, have frequencies within the range of optical atomic clocks. Strong E1 transitions provide options for laser cooling and trapping, while narrow transitions can be used for high-precision spectroscopy and tests of fundamental physics. We show that hole transitions can have extremely high sensitivity to α variation and propose candidate transitions that have much larger α sensitivities than any previously seen in atomic systems.
Collapse
Affiliation(s)
- J C Berengut
- School of Physics, University of New South Wales, Sydney, New South Wales 2052, Australia
| | | | | | | |
Collapse
|
36
|
Ko AH, Tempero MA, Shan Y, Su W, Lin Y, Dito E, Ong A, Wang Y, Yeh G, Chen L. A multinational phase II study of PEP02 (liposome irinotecan) for patients with gemcitabine-refractory metastatic pancreatic cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.4069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
37
|
Espinoza AM, Ko AH, Ostroff JW, Venook AP, Bergsland EK, Kelley RK, Dito E, Ong A, Tempero MA. Biliary stent complications in clinical trials for advanced pancreatic cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14665] [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: 11/20/2022] Open
|
38
|
Ko AH, Tempero MA, Shan Y, Su W, Lin Y, Dito E, Ong A, Yeh G, Chen L. A multinational phase II study of liposome irinotecan (PEP02) for patients with gemcitabine-refractory metastatic pancreatic cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
237 Background: PEP02 is a novel nanoparticle liposome formulation of irinotecan (CPT-11) that has improved pharmacokinetics and tumor biodistribution of both CPT-11 and its active metabolite-SN38 compared to the free form drug. PEP02 has showed encouraging safety and efficacy in various tumor types, including significant antitumor activity in a human pancreatic cancer L3.6pl orthotopic nude mouse xenograft model. In previous phase I studies, PEP02 either alone or in combination with 5-FU/LV demonstrated prolonged disease control in 5 of 7 (71%) patients (pts) with gemcitabine (GEM)-refractory advanced pancreatic cancer (PC). This phase II study aims to evaluate PEP02 monotherapy as 2nd-line treatment in pts with metastatic, GEM-refractory PC. Methods: Pts were eligible if they had metastatic pancreatic adenocarcinoma, KPS ≥ 70, and progressed following one line of GEM-based therapy. Treatment consisted of PEP02 120 mg/m2 administered as a 90-minute infusion every 3 weeks. A Simon's 2-stage design was used with 16 pts in the first stage and 39 pts in total; primary objective was 3-month survival rate (OS3-month). Results: Between March 2009 and August 2010, 37 pts were enrolled at 3 centers in the U.S. and Taiwan. Characteristics for the first 31 evaluable pts: 13 M/18 F; age 39-82 yrs; 19 Asian/12 Caucasian, KPS 100/90/80/70: 5/14/4/8. Mean number of treatment cycles is 5 (range, 1-22). Disease control rate (minor response + stable disease >2 cycles) is 52%. 8 of 24 pts (33%) with elevated baseline CA19-9 have had >50% biomarker decline. To date, 23/31 pts (74%) have survived > 3 months, with 4 pts still alive after 1 year. Reasons for study discontinuation: 74% progressive disease, 9% drug-related toxicity, 17% other. Preliminary safety data is available for the first stage. Most common G3/4 adverse events included: fatigue (31%), neutropenia (25%), nausea/vomiting (19%), and diarrhea (13%). Conclusions: This study has already met its primary endpoint (predicted OS3-month >65%). PEP02 appears to have both activity and tolerable side effects for pts with metastatic, GEM-refractory PC, and represents a promising option for this pt population with few standard options. [Table: see text]
Collapse
Affiliation(s)
- A. H. Ko
- University of California, San Francisco Comprehensive Cancer Center, San Francisco, CA; National Cheng Kung University Hospital, Tainan, Taiwan; National Taiwan University Hospital, Taipei, Taiwan; University of California, San Francisco, San Francisco, CA; PharmaEngine, Inc., Taipei, Taiwan; National Health Research Institutes, National Cheng Kung University, National Cheng Kung University Hospital, Kaohsiung Medical University Hospital, Tainan, Taiwan
| | - M. A. Tempero
- University of California, San Francisco Comprehensive Cancer Center, San Francisco, CA; National Cheng Kung University Hospital, Tainan, Taiwan; National Taiwan University Hospital, Taipei, Taiwan; University of California, San Francisco, San Francisco, CA; PharmaEngine, Inc., Taipei, Taiwan; National Health Research Institutes, National Cheng Kung University, National Cheng Kung University Hospital, Kaohsiung Medical University Hospital, Tainan, Taiwan
| | - Y. Shan
- University of California, San Francisco Comprehensive Cancer Center, San Francisco, CA; National Cheng Kung University Hospital, Tainan, Taiwan; National Taiwan University Hospital, Taipei, Taiwan; University of California, San Francisco, San Francisco, CA; PharmaEngine, Inc., Taipei, Taiwan; National Health Research Institutes, National Cheng Kung University, National Cheng Kung University Hospital, Kaohsiung Medical University Hospital, Tainan, Taiwan
| | - W. Su
- University of California, San Francisco Comprehensive Cancer Center, San Francisco, CA; National Cheng Kung University Hospital, Tainan, Taiwan; National Taiwan University Hospital, Taipei, Taiwan; University of California, San Francisco, San Francisco, CA; PharmaEngine, Inc., Taipei, Taiwan; National Health Research Institutes, National Cheng Kung University, National Cheng Kung University Hospital, Kaohsiung Medical University Hospital, Tainan, Taiwan
| | - Y. Lin
- University of California, San Francisco Comprehensive Cancer Center, San Francisco, CA; National Cheng Kung University Hospital, Tainan, Taiwan; National Taiwan University Hospital, Taipei, Taiwan; University of California, San Francisco, San Francisco, CA; PharmaEngine, Inc., Taipei, Taiwan; National Health Research Institutes, National Cheng Kung University, National Cheng Kung University Hospital, Kaohsiung Medical University Hospital, Tainan, Taiwan
| | - E. Dito
- University of California, San Francisco Comprehensive Cancer Center, San Francisco, CA; National Cheng Kung University Hospital, Tainan, Taiwan; National Taiwan University Hospital, Taipei, Taiwan; University of California, San Francisco, San Francisco, CA; PharmaEngine, Inc., Taipei, Taiwan; National Health Research Institutes, National Cheng Kung University, National Cheng Kung University Hospital, Kaohsiung Medical University Hospital, Tainan, Taiwan
| | - A. Ong
- University of California, San Francisco Comprehensive Cancer Center, San Francisco, CA; National Cheng Kung University Hospital, Tainan, Taiwan; National Taiwan University Hospital, Taipei, Taiwan; University of California, San Francisco, San Francisco, CA; PharmaEngine, Inc., Taipei, Taiwan; National Health Research Institutes, National Cheng Kung University, National Cheng Kung University Hospital, Kaohsiung Medical University Hospital, Tainan, Taiwan
| | - G. Yeh
- University of California, San Francisco Comprehensive Cancer Center, San Francisco, CA; National Cheng Kung University Hospital, Tainan, Taiwan; National Taiwan University Hospital, Taipei, Taiwan; University of California, San Francisco, San Francisco, CA; PharmaEngine, Inc., Taipei, Taiwan; National Health Research Institutes, National Cheng Kung University, National Cheng Kung University Hospital, Kaohsiung Medical University Hospital, Tainan, Taiwan
| | - L. Chen
- University of California, San Francisco Comprehensive Cancer Center, San Francisco, CA; National Cheng Kung University Hospital, Tainan, Taiwan; National Taiwan University Hospital, Taipei, Taiwan; University of California, San Francisco, San Francisco, CA; PharmaEngine, Inc., Taipei, Taiwan; National Health Research Institutes, National Cheng Kung University, National Cheng Kung University Hospital, Kaohsiung Medical University Hospital, Tainan, Taiwan
| |
Collapse
|
39
|
Fahmy P, Kanthan A, Kizana E, Kovoor P, Ong A. Comparison of Brachial Versus Radial Approach for Diagnostic Coronary Angiography When Femoral Approach Contra-indicated. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
40
|
Espinoza AM, Ko AH, Venook AP, Bergsland EK, Jones KA, Kelley RK, Korn WM, Dito E, Ong A, Tempero MA. A phase I study, with expanded cohort, of biweekly fixed-dose rate gemcitabine (FDR GEM) plus capecitabine (CAP) in patients with advanced pancreatic (APC) and biliary carcinomas (ABC). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.4136] [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: 11/20/2022] Open
|
41
|
Tran MN, Malkoske K, Ong A, Chowdhury A, Bews J. Sci-Fri AM(2): Brachy-03: A Guide to Systematically Load Radioactive I-125 Sources in Prostate Implant. Med Phys 2009. [DOI: 10.1118/1.3244195] [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: 11/07/2022] Open
|
42
|
Ong A, Krepart G, Lotocki R, Popowich S, Dean E, Butler J, Jones K. 142 VAGINAL VAULT BRACHYTHERAPY ALONE AS ADJUVANT TREATMENT FOR NODE-NEGATIVE STAGE II ENDOMETRIAL CANCER – MANITOBA EXPERIENCE. Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(12)72529-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
43
|
Woolley ML, Waters KA, Gartlon JE, Lacroix LP, Jennings C, Shaughnessy F, Ong A, Pemberton DJ, Harries MH, Southam E, Jones DNC, Dawson LA. Evaluation of the pro-cognitive effects of the AMPA receptor positive modulator, 5-(1-piperidinylcarbonyl)-2,1,3-benzoxadiazole (CX691), in the rat. Psychopharmacology (Berl) 2009; 202:343-54. [PMID: 18795266 DOI: 10.1007/s00213-008-1325-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2008] [Accepted: 08/31/2008] [Indexed: 02/03/2023]
Abstract
RATIONALE Positive allosteric modulators of the glutamatergic alpha-amino-3-hydroxy-5-methyl-4-isoazolepropionic acid (AMPA) receptor do not stimulate AMPA receptors directly but delay deactivation of the receptor and/or slow its desensitisation. This results in increased synaptic responses and enhanced long-term potentiation. Thus, it has been suggested that such compounds may have utility for the treatment of cognitive impairment. OBJECTIVES The objective of the study was to investigate the effect of an AMPA positive modulator, CX691, (1) in three rodent models of learning and memory, (2) on neurochemistry in the dorsal hippocampus and medial prefrontal cortex following acute administration, and (3) on brain-derived neurotrophic factor (BDNF) messenger RNA (mRNA) expression in the rat hippocampus following acute and sub-chronic administration. RESULTS CX691 attenuated a scopolamine-induced impairment of cued fear conditioning following acute administration (0.1 mg/kg p.o.) and a temporally induced deficit in novel object recognition following both acute (0.1 and 1.0 mg/kg p.o.) and sub-chronic (bi-daily for 7 days) administration (0.01, 0.03, 0.1 mg/kg p.o.). It also improved attentional set-shifting following sub-chronic administration (0.3 mg/kg p.o.). Acute CX691 (0.1, 0.3 and 1.0 mg/kg, p.o.) increased extracellular levels of acetylcholine in the dorsal hippocampus and medial prefrontal cortex and dopamine in the medial prefrontal cortex. Sub-chronic administration of CX691 (0.1 mg/kg, p.o.) elevated BDNF mRNA expression in both the whole and CA(1) sub-region of the hippocampus (P < 0.05). CONCLUSIONS Collectively, these data support the pro-cognitive activity reported for AMPA receptor positive modulators and suggest that these compounds may be of benefit in treating disorders characterised by cognitive deficits such as Alzheimer's disease and schizophrenia.
Collapse
Affiliation(s)
- M L Woolley
- Neurosciences Centre of Excellence for Drug Discovery, GlaxoSmithKline plc, New Frontiers Science Park, Third Avenue, Harlow, Essex CM195AW, UK.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Chien J, Ong A, Low SY. An unusual complication of dengue infection. Singapore Med J 2008; 49:e340-e342. [PMID: 19122929] [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: 05/27/2023]
Abstract
We present an unusual complication of dengue infection resulting in postviral phrenic neuropathy and diaphragmatic paralysis in a 34-year-old man. There is a paucity of literature on this condition, with postviral neuropathies previously reported to be associated commonly with herpes zoster, poliovirus, and rarely, West Nile virus and human immunodeficiency virus infections. To our knowledge, this is the first reported case of flavivirus causing isolated postviral phrenic neuropathy and diaphragmatic paralysis.
Collapse
Affiliation(s)
- J Chien
- Department of Respiratory and Critical Care Medicine, Singapore General Hospital, Outram Road, Singapore 169608.
| | | | | |
Collapse
|
45
|
Bobbili N, Kim Y, Dunn M, Yang J, Ong A. Effects of maternal immunisation against myostatin on post-natal growth and skeletal muscle mass of offspring in mice. FOOD AGR IMMUNOL 2008. [DOI: 10.1080/09540100801956596] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
|
46
|
Abstract
The case report describes a distinct variant of non-REM (Rapid Eye Movement) arousal parasomnia, sleepwalking type, featuring repetitive abrupt arousals, mostly from slow-wave sleep, and various automatisms and semi-purposeful behaviours. The frequency of events and distribution throughout the night presented as a continuous status of parasomnia ('status parasomnicus'). The patient responded well to treatment typically administered for adult NREM parasomnias, and after careful review of the clinical presentation, objective findings and treatment outcome, sleep-related epilepsy was ruled out in favour of parasomnia.
Collapse
Affiliation(s)
- N N Trajanovic
- Sleep and Alertness Clinic, University Health Network, Toronto, ON, Canada.
| | | | | |
Collapse
|
47
|
Hsieh C, Chia EM, Narayan A, Gerke AM, Sivagangabalan G, Ong A, Sadick N, Boyages S, Kovoor P. Role of ST-Segment Resolution in the Era of Field Triage of Acute Myocardial Infarction. Heart Lung Circ 2007. [DOI: 10.1016/j.hlc.2007.06.316] [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]
|
48
|
Kanthan A, Sivagangabalan G, Narayan A, Gerke A, Ong A, Sadick N, Boyages S, Kovoor P. Effect of Field Triage on Mortality in Patients with ST Elevation Myocardial Infarction (STEMI) Complicated by Cardiogenic Shock. Heart Lung Circ 2007. [DOI: 10.1016/j.hlc.2007.06.321] [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]
|
49
|
Ong A, AI-Essawi T, Bews J, Malkoske K, Schroeder G, Cho P, Drachenberg D, Chowdhury A. 135 Impact of prostate gland edema on post-permanent implant dosimetry first two years of manitoba experience. Radiother Oncol 2006. [DOI: 10.1016/s0167-8140(06)80876-5] [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]
|
50
|
Weems YS, Lennon E, Uchima T, Raney A, Goto K, Ong A, Zaleski H, Weems CW. Is nitric oxide luteolytic or antiluteolytic? Prostaglandins Other Lipid Mediat 2005; 78:129-38. [PMID: 16303611 DOI: 10.1016/j.prostaglandins.2005.06.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2005] [Revised: 05/28/2005] [Accepted: 06/02/2005] [Indexed: 11/30/2022]
Abstract
Nitric oxide (NO) has been reported to be luteolytic based on treatment of cows in vivo with an inhibitor of nitric oxide synthase (NOS-produces NO), which delayed the decline in progesterone by two to three days [Jaroszewki J, Hansel, W. Intraluteal administration of a nitric oxide synthase blocker stimulates progesterone, oxytocin secretion and prolongs the life span of the bovine corpus luteum. Proc Soc Exptl Biol Med 2000;224:50-5; Skarzynski D, Jaroszewki J, Bah, M, et al. Administration of nitric oxide synthase inhibitor counteracts prostaglandin F(2alpha)-induced luteolysis in cattle. Biol Reprod 2003;68:1674-81]. The objective of this experiment was to determine the effect of a long acting NO donor or a NOS inhibitor infused chronically into the interstitial tissue of the ovarian vascular pedicle adjacent to the ovary with a corpus luteum on secretion of progesterone during the ovine estrous cycle. Ewes were treated either with Vehicle (N=5); Diethylenetriamine (DETA-control for DETA-NONOate; N=5); (Z)-1-[2-(2-aminoethyl)-N-(2-ammonioethyl) amino]diazen-1-ium-1,2-diolate (DETA-NONOate-long acting NO donor; N=6); or l-nitro-arginine methyl ester (l-NAME-NOS inhibitor; N=6) every 6 h from 24:00 h (0 h) on day 8 through 18:00 h on day 18 of the estrous cycle. Jugular venous blood was collected every 6h for analysis for progesterone and corpora lutea were collected at 18:00 h on day 18 and weighed. Weights of corpora lutea were heavier (P< or =0.05) in DETA-NONOate-treated ewes when compared to Vehicle, DETA, or l-NAME-treated ewes, which did not differ amongst each other (P> or =0.05). Profiles of progesterone in jugular venous blood on days 8-18 differed (P< or =0.05) in DETA-NONOate-treated ewes when compared to Vehicle, DETA, or l-NAME-treated ewes did not differ (P> or =0.05) amongst each other. It is concluded that NO is not luteolytic during the ovine estrous cycle, but may instead be antiluteolytic and prevent luteolysis.
Collapse
Affiliation(s)
- Y S Weems
- Department of Human Nutrition, Food, and Animal Sciences, University of Hawaii, Honolulu, HI 96822, USA
| | | | | | | | | | | | | | | |
Collapse
|