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9 results on '"Chong, P. C."'

1. BPG: Seamless, automated and interactive visualization of scientific data

Author

P’ng, Christine, Green, Jeffrey, Chong, Lauren C, Waggott, Daryl, Prokopec, Stephenie D, Shamsi, Mehrdad, Nguyen, Francis, Mak, Denise YF, Lam, Felix, Albuquerque, Marco A, Wu, Ying, Jung, Esther H, Starmans, Maud HW, Chan-Seng-Yue, Michelle A, Yao, Cindy Q, Liang, Bianca, Lalonde, Emilie, Haider, Syed, Simone, Nicole A, Sendorek, Dorota, Chu, Kenneth C, Moon, Nathalie C, Fox, Natalie S, Grzadkowski, Michal R, Harding, Nicholas J, Fung, Clement, Murdoch, Amanda R, Houlahan, Kathleen E, Wang, Jianxin, Garcia, David R, de Borja, Richard, Sun, Ren X, Lin, Xihui, Chen, Gregory M, Lu, Aileen, Shiah, Yu-Jia, Zia, Amin, Kearns, Ryan, and Boutros, Paul C

Subjects
Information and Computing Sciences, Applied Computing, Networking and Information Technology R&D (NITRD), Data Analysis, Humans, Simulation Training, Software, Data-visualization, Interactive plotting, Web-resources, Mathematical Sciences, Biological Sciences, Bioinformatics, Biological sciences, Information and computing sciences, Mathematical sciences
Abstract

BackgroundWe introduce BPG, a framework for generating publication-quality, highly-customizable plots in the R statistical environment.ResultsThis open-source package includes multiple methods of displaying high-dimensional datasets and facilitates generation of complex multi-panel figures, making it suitable for complex datasets. A web-based interactive tool allows online figure customization, from which R code can be downloaded for integration with computational pipelines.ConclusionBPG provides a new approach for linking interactive and scripted data visualization and is available at http://labs.oicr.on.ca/boutros-lab/software/bpg or via CRAN at https://cran.r-project.org/web/packages/BoutrosLab.plotting.general.

Published
2019

2. BPG: Seamless, automated and interactive visualization of scientific data.

Author

P'ng, Christine, Green, Jeffrey, Chong, Lauren C, Waggott, Daryl, Prokopec, Stephenie D, Shamsi, Mehrdad, Nguyen, Francis, Mak, Denise YF, Lam, Felix, Albuquerque, Marco A, Wu, Ying, Jung, Esther H, Starmans, Maud HW, Chan-Seng-Yue, Michelle A, Yao, Cindy Q, Liang, Bianca, Lalonde, Emilie, Haider, Syed, Simone, Nicole A, Sendorek, Dorota, Chu, Kenneth C, Moon, Nathalie C, Fox, Natalie S, Grzadkowski, Michal R, Harding, Nicholas J, Fung, Clement, Murdoch, Amanda R, Houlahan, Kathleen E, Wang, Jianxin, Garcia, David R, de Borja, Richard, Sun, Ren X, Lin, Xihui, Chen, Gregory M, Lu, Aileen, Shiah, Yu-Jia, Zia, Amin, Kearns, Ryan, and Boutros, Paul C

Subjects
Humans, Software, Simulation Training, Data Analysis, Data-visualization, Interactive plotting, Web-resources, Networking and Information Technology R&D, Biological Sciences, Information and Computing Sciences, Mathematical Sciences, Bioinformatics
Abstract

BackgroundWe introduce BPG, a framework for generating publication-quality, highly-customizable plots in the R statistical environment.ResultsThis open-source package includes multiple methods of displaying high-dimensional datasets and facilitates generation of complex multi-panel figures, making it suitable for complex datasets. A web-based interactive tool allows online figure customization, from which R code can be downloaded for integration with computational pipelines.ConclusionBPG provides a new approach for linking interactive and scripted data visualization and is available at http://labs.oicr.on.ca/boutros-lab/software/bpg or via CRAN at https://cran.r-project.org/web/packages/BoutrosLab.plotting.general.

Published
2019

3. Compendium of TCDD-mediated transcriptomic response datasets in mammalian model systems

Author

Prokopec, Stephenie D, Houlahan, Kathleen E, Sun, Ren X, Watson, John D, Yao, Cindy Q, Lee, Jamie, P’ng, Christine, Pang, Renee, Wu, Alexander H, Chong, Lauren C, Smith, Ashley B, Harding, Nicholas J, Moffat, Ivy D, Lindén, Jere, Lensu, Sanna, Okey, Allan B, Pohjanvirta, Raimo, and Boutros, Paul C

Subjects
Biological Sciences, Biomedical and Clinical Sciences, Agent Orange & Dioxin, Genetics, Animals, Cell Line, Computational Biology, Environmental Pollutants, Female, Gene Expression Profiling, Gene Expression Regulation, Humans, Male, Mice, Polychlorinated Dibenzodioxins, Rats, Software, Transcriptome, Web Browser, TCDD, AHR, Microarray datasets, R, Information and Computing Sciences, Medical and Health Sciences, Bioinformatics, Biological sciences, Biomedical and clinical sciences
Abstract

Background2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is the most potent congener of the dioxin class of environmental contaminants. Exposure to TCDD causes a wide range of toxic outcomes, ranging from chloracne to acute lethality. The severity of toxicity is highly dependent on the aryl hydrocarbon receptor (AHR). Binding of TCDD to the AHR leads to changes in transcription of numerous genes. Studies evaluating the transcriptional changes brought on by TCDD may provide valuable insight into the role of the AHR in human health and disease. We therefore compiled a collection of transcriptomic datasets that can be used to aid the scientific community in better understanding the transcriptional effects of ligand-activated AHR.ResultsSpecifically, we have created a datasets package - TCDD.Transcriptomics - for the R statistical environment, consisting of 63 unique experiments comprising 377 samples, including various combinations of 3 species (human derived cell lines, mouse and rat), 4 tissue types (liver, kidney, white adipose tissue and hypothalamus) and a wide range of TCDD exposure times and doses. These datasets have been fully standardized using consistent preprocessing and annotation packages (available as of September 14, 2015). To demonstrate the utility of this R package, a subset of "AHR-core" genes were evaluated across the included datasets. Ahrr, Nqo1 and members of the Cyp family were significantly induced following exposure to TCDD across the studies as expected while Aldh3a1 was induced specifically in rat liver. Inmt was altered only in liver tissue and primarily by rat-AHR.ConclusionsAnalysis of the "AHR-core" genes demonstrates a continued need for studies surrounding the impact of AHR-activity on the transcriptome; genes believed to be consistently regulated by ligand-activated AHR show surprisingly little overlap across species and tissues. Until now, a comprehensive assessment of the transcriptome across these studies was challenging due to differences in array platforms, processing methods and annotation versions. We believe that this package, which is freely available for download ( http://labs.oicr.on.ca/boutros-lab/tcdd-transcriptomics ) will prove to be a highly beneficial resource to the scientific community evaluating the effects of TCDD exposure as well as the variety of functions of the AHR.

Published
2017

4. New astroglial injury-defined biomarkers for neurotrauma assessment

Author

Halford, Julia, Shen, Sean, Itamura, Kyohei, Levine, Jaclynn, Chong, Albert C, Czerwieniec, Gregg, Glenn, Thomas C, Hovda, David A, Vespa, Paul, Bullock, Ross, Dietrich, W Dalton, Mondello, Stefania, Loo, Joseph A, and Wanner, Ina-Beate

Subjects
Biomedical and Clinical Sciences, Neurosciences, Clinical Sciences, Traumatic Brain Injury (TBI), Traumatic Head and Spine Injury, Biotechnology, Physical Injury - Accidents and Adverse Effects, Brain Disorders, Injuries and accidents, Apoptosis Regulatory Proteins, Astrocytes, Biomarkers, Brain Concussion, Brain Injuries, Traumatic, Cells, Cultured, Fatty Acid-Binding Protein 7, Fructose-Bisphosphate Aldolase, Humans, Intracellular Signaling Peptides and Proteins, Kinetics, Phosphoproteins, Proteome, Tumor Suppressor Proteins, brain trauma, proteomics, cell culture, cerebrospinal fluid, exploratory factor analysis, Cardiorespiratory Medicine and Haematology, Neurology & Neurosurgery, Clinical sciences
Abstract

Traumatic brain injury (TBI) is an expanding public health epidemic with pathophysiology that is difficult to diagnose and thus treat. TBI biomarkers should assess patients across severities and reveal pathophysiology, but currently, their kinetics and specificity are unclear. No single ideal TBI biomarker exists. We identified new candidates from a TBI CSF proteome by selecting trauma-released, astrocyte-enriched proteins including aldolase C (ALDOC), its 38kD breakdown product (BDP), brain lipid binding protein (BLBP), astrocytic phosphoprotein (PEA15), glutamine synthetase (GS) and new 18-25kD-GFAP-BDPs. Their levels increased over four orders of magnitude in severe TBI CSF. First post-injury week, ALDOC levels were markedly high and stable. Short-lived BLBP and PEA15 related to injury progression. ALDOC, BLBP and PEA15 appeared hyper-acutely and were similarly robust in severe and mild TBI blood; 25kD-GFAP-BDP appeared overnight after TBI and was rarely present after mild TBI. Using a human culture trauma model, we investigated biomarker kinetics. Wounded (mechanoporated) astrocytes released ALDOC, BLBP and PEA15 acutely. Delayed cell death corresponded with GFAP release and proteolysis into small GFAP-BDPs. Associating biomarkers with cellular injury stages produced astroglial injury-defined (AID) biomarkers that facilitate TBI assessment, as neurological deficits are rooted not only in death of CNS cells, but also in their functional compromise.

Published
2017

5. Relationship between kidney disease and endothelial function in peripheral artery disease

Author

Chong, Karen C, Owens, Christopher D, Park, Meyeon, Alley, Hugh F, Boscardin, W John, Conte, Michael S, Gasper, Warren J, and Grenon, S Marlene

Subjects
Biomedical and Clinical Sciences, Clinical Sciences, Clinical Research, Cardiovascular, Kidney Disease, Renal and urogenital, Aged, Brachial Artery, Comorbidity, Cross-Sectional Studies, Endothelium, Vascular, Female, Glomerular Filtration Rate, Humans, Intermittent Claudication, Kidney, Kidney Diseases, Linear Models, Male, Middle Aged, Multivariate Analysis, Peripheral Arterial Disease, Predictive Value of Tests, Prognosis, Risk Factors, San Francisco, Vasodilation, Veterans Health, Medical and Health Sciences, Cardiovascular System & Hematology, Cardiovascular medicine and haematology, Clinical sciences
Abstract

ObjectiveWe have previously shown that peripheral artery disease (PAD) is associated with marked impairment of endothelial function (EF). Given that poor EF is associated with functional status of PAD patients as well as with increased morbidity and mortality in patients undergoing vascular procedures, determination of factors associated with poor EF in a PAD cohort is important. We hypothesized that decreased kidney function is associated with impaired EF in patients with PAD.MethodsThis was a cross-sectional study of PAD patients presenting to a vascular surgery outpatient clinic at the San Francisco Veterans Affairs Medical Center including patients enrolled in the OMEGA-PAD I trial (NCT01310270) and the OMEGA-PAD Cohort. Brachial artery flow-mediated vasodilation was performed to assess EF. Kidney function was characterized by estimated glomerular filtration rate with the abbreviated Modification of Diet in Renal Disease formula. Linear regression was performed to assess the relationship between EF and kidney function in claudicants.ResultsNinety-seven patients with intermittent claudication participated in this study. Mean age was 69 ± 8 years, 97% were male, and 79% were white. Comorbidities included hypertension (91%), dyslipidemia (87%), coronary artery disease (42%), and diabetes mellitus (38%). Mean ankle-brachial index was 0.73 ± 0.14 and mean flow-mediated vasodilation was 7.0% ± 3.8%, indicating impaired EF. Linear regression showed an association between kidney function and EF (by 10 mL/min/1.73 m(2); β, 0.12; confidence interval, 0.05-0.20; P = .001). After multivariable regression adjusting for age, race, log tumor necrosis factor α, hypertension, dyslipidemia, and diabetes, estimated glomerular filtration rate remained significantly associated with EF (P = .033).ConclusionsIn patients with PAD, decreased kidney function is associated with endothelial dysfunction. Further longitudinal studies are needed to better understand the impact of kidney function on PAD progression and the role of endothelial dysfunction in this process.

Published
2014

6. Clinical correlates of red blood cell omega-3 fatty acid content in male veterans with peripheral arterial disease

Author

Nosova, Emily V, Chong, Karen C, Alley, Hugh F, Harris, William S, Boscardin, W John, Conte, Michael S, Owens, Christopher D, and Grenon, S Marlene

Subjects
Biomedical and Clinical Sciences, Nutrition and Dietetics, Dietary Supplements, Prevention, Nutrition, Cardiovascular, Complementary and Integrative Health, Good Health and Well Being, Age Factors, Aged, Ankle Brachial Index, Biomarkers, Body Mass Index, Chi-Square Distribution, Cross-Sectional Studies, Docosahexaenoic Acids, Eicosapentaenoic Acid, Erythrocyte Membrane, Female, Humans, Linear Models, Male, Middle Aged, Multivariate Analysis, Obesity, Peripheral Arterial Disease, Prospective Studies, Risk Factors, Smoking, Veterans Health, Medical and Health Sciences, Cardiovascular System & Hematology, Cardiovascular medicine and haematology, Clinical sciences
Abstract

ObjectiveDespite available medical therapies, patients with peripheral arterial disease (PAD) remain at high risk for cardiovascular events. The n-3 polyunsaturated fatty acids (PUFA), derived from marine sources, have been shown to improve cardiovascular mortality. The Omega-3 Index (O3I), a proportion of the n-3 PUFA eicosapentaenoic acid and docosahexaenoic acid in the red blood cell membrane, correlates with cardiovascular risk. Previous investigations have found that n-3 PUFA supplementation, fish consumption, older age, and smoking history affect the O3I in different patient populations, although similar correlations have never been explored in PAD. We hypothesized that in our PAD cohort, blood content of omega-3 fatty acids would directly and positively correlate with a history of fish oil supplementation and older age and inversely correlate with a smoking history and obesity.MethodsThis cross-sectional study included 111 patients who had an ankle-brachial index of

Published
2014

7. Short-term physical inactivity impairs vascular function

Author

Nosova, Emily V, Yen, Priscilla, Chong, Karen C, Alley, Hugh F, Stock, Eveline O, Quinn, Alex, Hellmann, Jason, Conte, Michael S, Owens, Christopher D, Spite, Matthew, and Grenon, S Marlene

Subjects
Biomedical and Clinical Sciences, Cardiovascular Medicine and Haematology, Cardiovascular, Clinical Research, Prevention, Hypertension, 2.1 Biological and endogenous factors, Bed Rest, Biomarkers, Blood Pressure, Endothelium, Vascular, Female, Healthy Volunteers, Humans, Hydroxyeicosatetraenoic Acids, Inflammation, Male, Sedentary Behavior, Vascular Stiffness, Young Adult, Arterial stiffness, Endothelial dysfunction, Physical inactivity, Clinical Sciences, Surgery, Clinical sciences
Abstract

BackgroundSedentarism, also termed physical inactivity, is an independent risk factor for cardiovascular diseases. Mechanisms thought to be involved include insulin resistance, dyslipidemia, hypertension, and increased inflammation. It is unknown whether changes in vascular and endothelial function also contribute to this excess risk. We hypothesized that short-term exposure to inactivity would lead to endothelial dysfunction, arterial stiffening, and increased vascular inflammation.MethodsFive healthy subjects (four men and one woman) underwent 5 d of bed rest (BR) to simulate inactivity. Measurements of vascular function (flow-mediated vasodilation to evaluate endothelial function; applanation tonometry to assess arterial resistance), inflammation, and metabolism were made before BR, daily during BR, and 2 d after BR recovery period. Subjects maintained an isocaloric diet throughout.ResultsBR led to significant decreases in brachial artery and femoral artery flow-mediated vasodilation (brachial: 11 ± 3% pre-BR versus 9 ± 2% end-BR, P = 0.04; femoral: 4 ± 1% versus 2 ± 1%, P = 0.04). The central augmentation index increased with BR (-4 ± 9% versus 5 ± 11%, P = 0.03). Diastolic blood pressure increased (58 ± 7 mm Hg versus 62 ± 7 mm Hg, P = 0.02), whereas neither systolic blood pressure nor heart rate changed. 15-Hydroxyeicosatetraenoic acid, an arachidonic acid metabolite, increased but the other inflammatory and metabolic biomarkers were unchanged.ConclusionsOur findings show that acute exposure to sedentarism results in decreased endothelial function, arterial stiffening, increased diastolic blood pressure, and an increase in 15-hydroxyeicosatetraenoic acid. We speculate that inactivity promotes a vascular "deconditioning" state characterized by impaired endothelial function, leading to arterial stiffness and increased arterial tone. Although physiologically significant, the underlying mechanisms and clinical relevance of these findings need to be further explored.

Published
2014

8. Simultaneous pelvic exenteration and liver resection for primary rectal cancer with synchronous liver metastases: results from the PelvEx Collaborative

Author

Kelly, M. E., Aalbers, A. G. J., Abdul Aziz, N., Abecasis, N., Abraham‐Nordling, M., Akiyoshi, T., Alberda, W., Albert, M., Andric, M., Angenete, E., Antoniou, A., Auer, R., Austin, K. K., Aziz, O., Baker, R. P., Bali, M., Baseckas, G., Bebington, B., Bednarski, B. K., Beets, G. L., Berg, P. L., Beynon, J., Biondo, S., Boyle, K., Bordeianou, L., Bremers, A. B., Brunner, M., Buchwald, P., Bui, A., Burgess, A., Burger, J. W. A., Burling, D., Burns, E., Campain, N., Carvalhal, S., Castro, L., Caycedo‐Marulanda, A., Chan, K. K. L., Chang, G. J., Chew, M. H., Chong, P. C., Christensen, H. K., Clouston, H., Codd, M., Collins, D., Colquhoun, A. J., Corr, A., Coscia, M., Coyne, P. E., Creavin, B., Croner, R. S., Damjanovic, L., Daniels, I. R., Davies, M., Davies, R. J., Delaney, C. P., Denost, Q., Deutsch, C., Dietz, D., Domingo, S., Dozois, E. J., Duff, M., Eglinton, T., Enrique‐Navascues, J. M., Espin‐Basany, E., Evans, M. D., Fearnhead, N. S., Flatmark, K., Fleming, F., Frizelle, F. A., Gallego, M. A., Garcia‐Granero, E., Garcia‐Sabrido, J. L., Gentilini, L., George, M. L., Ghouti, L., Giner, F., Ginther, N., Glynn, R., Golda, T., Griffiths, B., Harris, D. A., Hagemans, J. A. W., Hanchanale, V., Harji, D. P., Helewa, R. M., Heriot, A. G., Hochman, D., Hohenberger, W., Holm, T., Hompes, R., Jenkins, J. T., Kaffenberger, S., Kandaswamy, G. V., Kapur, S., Kanemitsu, Y., Kelley, S. R., Keller, D. S., Khan, M. S., Kiran, R. P., Kim, H., Kim, H. J., Koh, C. E., Kok, N. F. M., Kokelaar, R., Kontovounisios, C., Kristensen, H. Ø., Kroon, H. M., Kusters, M., Lago, V., Larsen, S. G., Larson, D. W., Law, W. L., Laurberg, S., Lee, P. J., Limbert, M., Lydrup, M. L., Lyons, A., Lynch, A. C., Mantyh, C., Mathis, K. L., Margues, C. F. S., Martling, A., Meijerink, W. J. H. J., Merkel, S., Mehta, A. M., McArthur, D. R., McDermott, F. D., McGrath, J. S., Malde, S., Mirnezami, A., Monson, J. R. T., Morton, J. R., Mullaney, T. G., Negoi, I., Neto, J. W. M., Nguyen, B., Nielsen, M. B., Nieuwenhuijzen, G. A. P., Nilsson, P. J., O’Connell, P. R., O’Dwyer, S. T., Palmer, G., Pappou, E., Park, J., Patsouras, D., Pellino, G., Peterson, A. C., Poggioli, G., Proud, D., Quinn, M., Quyn, A., Radwan, R. W., van Ramshorst, G. H., Rasheed, S., Rasmussen, P. C., Regenbogen, S. E., Renehan, A., Rocha, R., Rochester, M., Rohila, J., Rothbarth, J., Rottoli, M., Roxburgh, C., Rutten, H. J. T., Ryan, É. J., Safar, B., Sagar, P. M., Sahai, A., Saklani, A., Sammour, T., Sayyed, R., Schizas, A. M. P., Schwarzkopf, E., Scripcariu, V., Selvasekar, C., Shaikh, I., Hellawell, G., Shida, D., Simpson, A., Smart, N. J., Smart, P., Smith, J. J., Solbakken, A. M., Solomon, M. J., Sørensen, M. M., Steele, S. R., Steffens, D., Stitzenberg, K., Stocchi, L., Stylianides, N. A., Sumrien, H., Sutton, P. A., Swartking, T., Taylor, C., Tekkis, P. P., Teras, J., Thurairaja, R., Toh, E. L., Tsarkov, P., Tsukada, Y., Tsukamoto, S., Tuech, J. J., Turner, W. H., Tuynman, J. B., Vasquez‐Jimenez, W., Verhoef, C., Vizzielli, G., Voogt, E. L. K., Uehara, K., Wakeman, C., Warrier, S., Wasmuth, H. H., Weber, K., Weiser, M. R., Wheeler, J. M. D., Wild, J., Wilson, M., de Wilt, J. H. W., Wolthuis, A., Yano, H., Yip, B., Yip, J., Yoo, R. N., van Zoggel, D., Winter, D. C., Kelly, M. E., Aalbers, A. G. J., Abdul Aziz, N., Abecasis, N., Abraham‐nordling, M., Akiyoshi, T., Alberda, W., Albert, M., Andric, M., Angenete, E., Antoniou, A., Auer, R., Austin, K. K., Aziz, O., Baker, R. P., Bali, M., Baseckas, G., Bebington, B., Bednarski, B. K., Beets, G. L., Berg, P. L., Beynon, J., Biondo, S., Boyle, K., Bordeianou, L., Bremers, A. B., Brunner, M., Buchwald, P., Bui, A., Burgess, A., Burger, J. W. A., Burling, D., Burns, E., Campain, N., Carvalhal, S., Castro, L., Caycedo‐marulanda, A., Chan, K. K. L., Chang, G. J., Chew, M. H., Chong, P. C., Christensen, H. K., Clouston, H., Codd, M., Collins, D., Colquhoun, A. J., Corr, A., Coscia, M., Coyne, P. E., Creavin, B., Croner, R. S., Damjanovic, L., Daniels, I. R., Davies, M., Davies, R. J., Delaney, C. P., Denost, Q., Deutsch, C., Dietz, D., Domingo, S., Dozois, E. J., Duff, M., Eglinton, T., Enrique‐navascues, J. M., Espin‐basany, E., Evans, M. D., Fearnhead, N. S., Flatmark, K., Fleming, F., Frizelle, F. A., Gallego, M. A., Garcia‐granero, E., Garcia‐sabrido, J. L., Gentilini, L., George, M. L., Ghouti, L., Giner, F., Ginther, N., Glynn, R., Golda, T., Griffiths, B., Harris, D. A., Hagemans, J. A. W., Hanchanale, V., Harji, D. P., Helewa, R. M., Heriot, A. G., Hochman, D., Hohenberger, W., Holm, T., Hompes, R., Jenkins, J. T., Kaffenberger, S., Kandaswamy, G. V., Kapur, S., Kanemitsu, Y., Kelley, S. R., Keller, D. S., Khan, M. S., Kiran, R. P., Kim, H., Kim, H. J., Koh, C. E., Kok, N. F. M., Kokelaar, R., Kontovounisios, C., Kristensen, H. Ø., Kroon, H. M., Kusters, M., Lago, V., Larsen, S. G., Larson, D. W., Law, W. L., Laurberg, S., Lee, P. J., Limbert, M., Lydrup, M. L., Lyons, A., Lynch, A. C., Mantyh, C., Mathis, K. L., Margues, C. F. S., Martling, A., Meijerink, W. J. H. J., Merkel, S., Mehta, A. M., Mcarthur, D. R., Mcdermott, F. D., Mcgrath, J. S., Malde, S., Mirnezami, A., Monson, J. R. T., Morton, J. R., Mullaney, T. G., Negoi, I., Neto, J. W. M., Nguyen, B., Nielsen, M. B., Nieuwenhuijzen, G. A. P., Nilsson, P. J., O’Connell, P. R., O’Dwyer, S. T., Palmer, G., Pappou, E., Park, J., Patsouras, D., Pellino, G., Peterson, A. C., Poggioli, G., Proud, D., Quinn, M., Quyn, A., Radwan, R. W., van Ramshorst, G. H., Rasheed, S., Rasmussen, P. C., Regenbogen, S. E., Renehan, A., Rocha, R., Rochester, M., Rohila, J., Rothbarth, J., Rottoli, M., Roxburgh, C., Rutten, H. J. T., Ryan, É. J., Safar, B., Sagar, P. M., Sahai, A., Saklani, A., Sammour, T., Sayyed, R., Schizas, A. M. P., Schwarzkopf, E., Scripcariu, V., Selvasekar, C., Shaikh, I., Hellawell, G., Shida, D., Simpson, A., Smart, N. J., Smart, P., Smith, J. J., Solbakken, A. M., Solomon, M. J., Sørensen, M. M., Steele, S. R., Steffens, D., Stitzenberg, K., Stocchi, L., Stylianides, N. A., Sumrien, H., Sutton, P. A., Swartking, T., Taylor, C., Tekkis, P. P., Teras, J., Thurairaja, R., Toh, E. L., Tsarkov, P., Tsukada, Y., Tsukamoto, S., Tuech, J. J., Turner, W. H., Tuynman, J. B., Vasquez‐jimenez, W., Verhoef, C., Vizzielli, G., Voogt, E. L. K., Uehara, K., Wakeman, C., Warrier, S., Wasmuth, H. H., Weber, K., Weiser, M. R., Wheeler, J. M. D., Wild, J., Wilson, M., de Wilt, J. H. W., Wolthuis, A., Yano, H., Yip, B., Yip, J., Yoo, R. N., van Zoggel, D., Winter, D. C., Kelly, ME, Aalbers, AGJ, Aziz, NA, Abecasis, N, Abraham-Nordling, M, Akiyoshi, T, Alberda, W, Albert, M, Andric, M, Angenete, E, Antoniou, A, Auer, R, Austin, KK, Aziz, O, Baker, RP, Bali, M, Baseckas, G, Bebington, B, Bednarski, BK, Beets, GL, Berg, PL, Beynon, J, Biondo, S, Boyle, K, Bordeianou, L, Bremers, AB, Brunner, M, Buchwald, P, Bui, A, Burgess, A, Burger, JWA, Burling, D, Burns, E, Campain, N, Carvalhal, S, Castro, L, Caycedo-Marulanda, A, Chan, KKL, Chew, GJH, Chong, PC, Christensen, HK, Clouston, H, Codd, M, Coffins, D, Colquhoun, AJ, Corr, A, Coscia, M, Coyne, PE, Creavin, B, Croner, RS, Damjanovic, L, Daniels, R, Davies, M, Davies, RJ, Delaney, CP, Denost, Q, Deutsch, C, Dietz, D, Domingo, S, Dozois, EJ, Duff, M, Eglinton, T, Enrique-Navascues, JM, Espin-Basany, E, Evans, MD, Fearnhead, NS, Flatmark, K, Fleming, F, Frizelle, FA, Gallego, MA, Garcia-Granero, E, Garcia-Sabrido, JL, Gentilini, L, George, ML, Ghouti, L, Giner, F, Ginther, N, Glynn, R, Golda, T, Griffiths, B, Harris, DA, Hagemans, JAW, Hanchanale, V, Harji, DP, Helewa, RM, Heriot, AG, Hochman, D, Hohenberger, W, Holm, T, Hompes, R, Jenkins, JT, Kaffenberger, S, Kandaswamy, GV, Kapur, S, Kanemitsu, Y, Kelley, SR, Keller, DS, Khan, MS, Kiran, RP, Kim, H, Kim, HJ, Koh, CE, Kok, NFM, Kokelaar, R, Kontovounisios, C, Kristensen, HO, Kroon, HM, Kusters, M, Lago, V, Larsen, SG, Larson, DW, Law, WL, Laurberg, S, Lee, PJ, Limbert, M, Lydrup, ML, Lyons, A, Lynch, AC, Mantyh, C, Mathis, KL, Margues, CFS, Martling, A, Meijerink, WJHJ, Merkel, S, Mehta, AM, McArthur, DR, McDermott, FD, McGrath, JS, Malde, S, Mimezami, A, Monson, JRT, Morton, JR, Mullaney, TG, Negoi, I, Neto, JWM, Nguyen, B, Nielsen, MB, Nieuwenhuijzen, GAP, Nilsson, PJ, O'Connell, PR, O'Dwyer, ST, Palmer, G, Pappou, E, Park, J, Patsouras, D, Pellino, G, Peterson, AC, Poggioli, G, Proud, D, Quinn, M, Quyn, A, Radwan, RW, van Ramshorst, GH, Rasheed, S, Rasmussen, PC, Regenbogen, SE, Renehan, A, Rocha, R, Rochester, M, Rohila, J, Rothbarth, J, Rottoli, M, Roxburgh, C, Rutten, HJT, Ryan, EJ, Safar, B, Sagar, PM, Sahai, A, Saklani, A, Sammour, T, Sayyed, R, Schizas, AMP, Schwarzkopf, E, Scripcariu, V, Selvasekar, C, Shaikh, I, Hellawell, G, Shida, D, Simpson, A, Smart, NJ, Smart, P, Smith, JJ, Solbakken, AM, Solomon, MJ, Sorensen, MM, Steele, SR, Steffens, D, Stitzenberg, K, Stocchi, L, Stylianides, NA, Sumrien, H, Sutton, PA, Swanking, T, Taylor, C, Tekkis, PP, Teras, J, Thurairaja, R, Toh, EL, Tsarkov, P, Tsukada, Y, Tsukamoto, S, Tuech, JJ, Turner, WH, Tuynman, JB, Vasquez-Jimenez, W, Verhoef, C, Vizzielli, G, Voogt, ELK, Uehara, K, Wakeman, C, Warner, S, Wasmuth, HH, Weber, K, Weiser, MR, Wheeler, JMD, Wild, J, Wilson, M, de Wilt, JHW, Wolthuis, A, Yano, H, Yip, B, Yip, J, Yoo, RN, van Zoggel, D, Winter, DC, Surgery, CCA - Cancer Treatment and quality of life, and Amsterdam Gastroenterology Endocrinology Metabolism

Subjects
Male, medicine.medical_specialty, Adolescent, Colorectal cancer, survival outcomes, medicine.medical_treatment, surgical outcome, surgical outcomes, Tumours of the digestive tract Radboud Institute for Health Sciences [Radboudumc 14], 03 medical and health sciences, 0302 clinical medicine, SDG 3 - Good Health and Well-being, Interquartile range, medicine, Humans, liver metastasi, Rectal cancer, Retrospective Studies, Pelvic exenteration, business.industry, Rectal Neoplasms, Mortality rate, Liver Neoplasms, Gastroenterology, Postoperative complication, Perioperative, medicine.disease, Surgery, Pelvic Exenteration, liver metastasis, Treatment Outcome, 030220 oncology & carcinogenesis, international collaboration, Resection margin, 030211 gastroenterology & hepatology, Hepatectomy, Neoplasm Recurrence, Local, business
Abstract

Aim: At presentation, 15–20% of patients with rectal cancer already have synchronous liver metastases. The aim of this study was to determine the surgical and survival outcomes in patients with advanced rectal cancer who underwent combined pelvic exenteration and liver (oligometastatic) resection. Method: Data from 20 international institutions that performed simultaneous pelvic exenteration and liver resection between 2007 and 2017 were accumulated. Primarily, we examined perioperative outcomes, morbidity and mortality. We also assessed the impact that margin status had on survival. Results: Of 128 patients, 72 (56.2%) were men with a median age of 60 years [interquartile range (IQR) 15 years]. The median size of the liver oligometastatic deposits was 2 cm (IQR 1.8 cm). The median duration of surgery was 406 min (IQR 240 min), with a median blood loss of 1090 ml (IQR 2010 ml). A negative resection margin (R0 resection) was achieved in 73.5% of pelvic exenterations and 66.4% of liver resections. The 30-day mortality rate was 1.6%, and 32% of patients had a major postoperative complication. The 5-year overall survival for patients in whom an R0 resection of both primary and metastatic disease was achieved was 54.6% compared with 20% for those with an R1/R2 resection (P = 0.006). Conclusion: Simultaneous pelvic exenteration and liver resection is feasible, with acceptable morbidity and mortality. Simultaneous resection should only be performed where an R0 resection of both pelvic and hepatic disease is anticipated.

Published
2020
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9. Changing outcomes following pelvic exenteration for locally advanced and recurrent rectal cancer

Author

Kelly, M. E., Aalbers, A. G. J., Aziz, N. Abdul, Abraham-Nordling, M., Alberda, W., Antoniou, A., Austin, K. K., Baker, R., Bali, M., Baseckas, G., Bednarski, B. K., Beets, G. L., Berg, P. L., Beynon, J., Biondo, S., Bordeianou, L., Brunner, M., Buchwald, P., Burger, J. W. A., Burling, D., Campain, N., Chan, K. K. L., Chang, G., Chew, M. H., Chong, P. C., Christensen, H. K., Codd, M., Colquhoun, A. J., Corr, A., Coscia, M., Coyne, P. E., Creavin, B., Damjanovic, L., Daniels, I. R., Davies, M., Davies, R. J., de Wilt, J. H. W., Denost, Q., Deutsch, C., Dietz, D., Dozois, E. J., Duff, M., Eglinton, T., Evans, M., Evans, M. D., Fearnhead, N. S., Frizelle, F. A., Garcia-Granero, E., Garcia-Sabrido, J. L., Gentilini, L., George, M. L., Glynn, R., Golda, T., Griffiths, B., Hagemans, J. A. W., Harji, D. P., Harris, D. A., Heriot, A. A. G., Hohenberger, W., Holm, T., Jenkins, J. T., Kanemitsu, Y., Kapur, S., Keller, D. S., Kelley, S. R., Kim, H., Koh, C. E., Kok, N. F. M., Kokelaar, R., Kontovounisios, C., Kusters, M., Larson, D. W., Laurberg, S., Law, W. L., Lee, P., Lydrup, M. L., Lynch, A. C., Martling, A., Mathis, K. L., Meijerink, W. J. H. J., Mentha, A. M., Merkel, S., McDermott, F. D., McGrath, J. S., Mihailo, A., Mirnezami, A., Morton, J. R., Mullaney, T. G., Nielsen, M. B., Nieuwenhuijzen, G. A. P., Nilsson, P. J., O'Connell, P. R., Palmer, G., Patsouras, D., Pellino, G., Poggioli, G., Quinn, M., Quyn, A., Radwan, R. W., Rasheed, S., Rasmussen, P. C., Rocha, R., Rothbarth, J., Roxburgh, C., Rutten, H. J. T., Ryan, E., Sagar, P. M., Sammour, T., Schizas, A. M. P., Schwarzkopf, E., Scripcariu, V, Shaikh, I, Shida, D., Simpson, A., Smart, N. J., Smith, J., Solomon, M. J., Sorensen, M. M., Steele, S. R., Steffens, D., Stocchi, L., Stylianides, N. A., Taylor, C., Tekkis, P. P., Tsukamoto, S., Turner, W. H., Tuynman, J. B., van Ramshorst, Gabriëlle, van Zoggel, D., Vasquez-Jimenez, W., Verhoef, C., Verstegen, M., Wakeman, C., Warrier, S., Wasmuth, H. H., Weiser, M. R., Wheeler, J. M. D., Wild, J., Winter, D. C., Yip, J., Kelly, M. E., Aalbers, A. G. J., Aziz, N. Abdul, Abraham‐Nordling, M., Alberda, W., Antoniou, A., Austin, K. K., Baker, R., Bali, M., Baseckas, G., Bednarski, B. K., Beets, G. L., Berg, P. L., Beynon, J., Biondo, S., Bordeianou, L., Brunner, M., Buchwald, P., Burger, J. W. A., Burling, D., Campain, N., Chan, K. K. L., Chang, G., Chew, M. H., Chong, P. C., Christensen, H. K., Codd, M., Colquhoun, A. J., Corr, A., Coscia, M., Coyne, P. E., Creavin, B., Damjanovic, L., Daniels, I. R., Davies, M., Davies, R. J., Wilt, J. H. W., Denost, Q., Deutsch, C., Dietz, D., Dozois, E. J., Duff, M., Eglinton, T., Evans, M., Evans, M.D., Fearnhead, N. S., Frizelle, F. A., Garcia‐Granero, E., Garcia‐Sabrido, J. L., Gentilini, L., George, M. L., Glynn, R., Golda, T., Griffiths, B., Hagemans, J. A.W., Harji, D. P., Harris, D. A., Heriot, A. A. G., Hohenberger, W., Holm, T., Jenkins, J. T., Kanemitsu, Y., Kapur, S., Keller, D. S., Kelley, S. R., Kim, H., Koh, C. E., Kok, N. F. M., Kokelaar, R., Kontovounisios, C., Kusters, M., Larson, D. W., Laurberg, S., Law, W. L., Lee, P., Lydrup, M. L., Lynch, A. C., Martling, A., Mathis, K. L., Meijerink, W. J. H. J., Mentha, A. M., Merkel, S., McDermott, F. D., McGrath, J. S., Mihailo, A., Mirnezami, A., Morton, J. R., Mullaney, T. G., Nielsen, M. B., Nieuwenhuijzen, G. A. P., Nilsson, P. J., O'Connell, P. R., Palmer, G., Patsouras, D., Pellino, G., Poggioli, G., Quinn, M., Quyn, A., Radwan, R. W., Rasheed, S., Rasmussen, P. C., Rocha, R., Rothbarth, J., Roxburgh, C., Rutten, H. J. T., Ryan, É., Sagar, P. M., Sammour, T., Schizas, A. M. P., Schwarzkopf, E., Scripcariu, V., Shaikh, I., Shida, D., Simpson, A., Smart, N. J., Smith, J., Solomon, M. J., Sørensen, M.M., Steele, S. R., Steffens, D., Stocchi, L., Stylianides, N. A., Taylor, C., Tekkis, P. P., Tsukamoto, S., Turner, W. H., Tuynman, J. B., Ramshorst, G. H., Zoggel, D., Vasquez‐Jimenez, W., Verhoef, C., Verstegen, M., Wakeman, C., Warrier, S., Wasmuth, H. H., Weiser, M. R., Wheeler, J. M. D., Wild, J., Winter, D. C., Yip, J., Kelly, Me, Aalbers, Agj, Aziz, Na, Abraham-Nordling, M, Alberda, W, Antoniou, A, Austin, Kk, Baker, R, Bali, M, Baseckas, G, Bednarski, Bk, Beets, Gl, Berg, Pl, Beynon, J, Biondo, S, Bordeianou, L, Brunner, M, Buchwald, P, Burger, Jwa, Burling, D, Campain, N, Chan, Kkl, Chang, G, Chew, Mh, Chong, Pc, Christensen, Hk, Codd, M, Colquhoun, Aj, Corr, A, Coscia, M, Coyne, Pe, Creavin, B, Damjanovic, L, Daniels, Ir, Davies, M, Davies, Rj, de Wilt, Jhw, Denost, Q, Deutsch, C, Dietz, D, Dozois, Ej, Duff, M, Eglinton, T, Evans, M, Evans, Md, Fearnhead, N, Frizelle, Fa, Garcia-Granero, E, Garcia-Sabrido, Jl, Gentilini, L, George, Ml, Glynn, R, Golda, T, Griffiths, B, Hagemans, Jaw, Harji, Dp, Harris, Da, Heriot, Aag, Hohenberger, W, Holm, T, Jenkins, Jt, Kanemitsu, Y, Kapur, S, Keller, D, Kelley, Sr, Kim, H, Koh, Ce, Kok, Nfm, Kokelaar, R, Kontovounisios, C, Kusters, M, Larson, Dw, Laurberg, S, Law, Wl, Lee, P, Lydrup, Ml, Lynch, Ac, Martling, A, Mathis, Kl, Meijerink, Wjhj, Mentha, Am, Merkel, S, Mcdermott, Fd, Mcgrath, J, Mihailo, A, Mirnezami, A, Morton, Jr, Mullaney, Tg, Nielsen, Mb, Nieuwenhuijzen, Gap, Nilsson, Pj, O'Connell, Pr, Palmer, G, Patsouras, D, Pellino, G, Poggioli, G, Quinn, M, Quyn, A, Radwan, Rw, Rasheed, S, Rasmussen, Pc, Rocha, R, Rothbarth, J, Roxburgh, C, Rutten, Hjt, Ryan, E, Sagar, Pm, Sammour, T, Schizas, Amp, Schwarzkopf, E, Scripcariu, V, Shaikh, I, Shida, D, Simpson, A, Smart, Nj, Smith, J, Solomon, Mj, Sorensen, Mm, Steele, Sr, Steffens, D, Stocchi, L, Stylianides, Na, Taylor, C, Tekkis, Pp, Tsukamoto, S, Turner, Wh, Tuynman, Jb, van Ramshorst, Gh, van Zoggel, D, Vasquez-Jimenez, W, Verhoef, C, Verstegen, M, Wakeman, C, Warrier, S, Wasmuth, Hh, Weiser, Mr, Wheeler, Jmd, Wild, J, Winter, Dc, and Yip, J

Subjects
Male, Blood transfusion, Colorectal cancer, medicine.medical_treatment, Surgical Flaps, COLORECTAL-CANCER, Tumours of the digestive tract Radboud Institute for Health Sciences [Radboudumc 14], Postoperative Complications, Retrospective Studie, Medicine and Health Sciences, Mortality rate, General Medicine, Middle Aged, Treatment Outcome, medicine.anatomical_structure, HOSPITAL VOLUME, SURVIVAL, Original Article, Female, Life Sciences & Biomedicine, Human, medicine.medical_specialty, lcsh:Surgery, Rectum, Subgroup analysis, SDG 3 - Good Health and Well-being, medicine, Humans, Blood Transfusion, Retrospective Studies, Aged, Science & Technology, Pelvic exenteration, Rectal Neoplasms, business.industry, MORTALITY, PelvEx Collaborative, Retrospective cohort study, Original Articles, lcsh:RD1-811, Length of Stay, medicine.disease, SURGEON VOLUME, Pelvic Exenteration, Surgery, Surgical Flap, Postoperative Complication, Neoplasm Recurrence, Local, business, Complication
Abstract

Contains fulltext : 215764.pdf (Publisher’s version ) (Open Access) Background: Pelvic exenteration for locally advanced rectal cancer (LARC) and locally recurrent rectal cancer (LRRC) is technically challenging but increasingly performed in specialist centres. The aim of this study was to compare outcomes of exenteration over time. Methods: This was a multicentre retrospective study of patients who underwent exenteration for LARC and LRRC between 2004 and 2015. Surgical outcomes, including rate of bone resection, flap reconstruction, margin status and transfusion rates, were examined. Outcomes between higher- and lower-volume centres were also evaluated. Results: Some 2472 patients underwent pelvic exenteration for LARC and LRRC across 26 institutions. For LARC, rates of bone resection or flap reconstruction increased from 2004 to 2015, from 3.5 to 12.8 per cent, and from 12.0 to 29.4 per cent respectively. Fewer units of intraoperative blood were transfused over this interval (median 4 to 2 units; P = 0.040). Subgroup analysis showed that bone resection and flap reconstruction rates increased in lower- and higher-volume centres. R0 resection rates significantly increased in low-volume centres but not in high-volume centres over time (low-volume: from 62.5 to 80.0 per cent, P = 0.001; high-volume: from 83.5 to 88.4 per cent, P = 0.660). For LRRC, no significant trends over time were observed for bone resection or flap reconstruction rates. The median number of units of intraoperative blood transfused decreased from 5 to 2.5 units (P < 0.001). R0 resection rates did not increase in either low-volume (from 51.7 to 60.4 per cent; P = 0.610) or higher-volume (from 48.6 to 65.5 per cent; P = 0.100) centres. No significant differences in length of hospital stay, 30-day complication, reintervention or mortality rates were observed over time. Conclusion: Radical resection, bone resection and flap reconstruction rates were performed more frequently over time, while transfusion requirements decreased.

Published
2019

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