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7. Voeding en bariatrie

Author

Greve, Jan Willem, Soeters, Maarten, editor, Wierdsma, Nicolette, editor, Kruizenga, Hinke, editor, and Bouma, Gerd, editor

Published
2023
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11. Cost-effectiveness and safety of continuous pulse oximetry for management of undiagnosed obstructive sleep apnea in bariatric surgery: a nationwide cohort study

Author

van Veldhuisen, Sophie L., Keusters, Willem R., Kuppens, Kim, de Raaff, Christel A.L., van Veen, Ruben N., Wiezer, Marinus J., Swank, Dingeman J., Demirkiran, Ahmet, Boerma, Evert-Jan G., Greve, Jan-Willem M., van Dielen, Francois M.H., de Castro, Steve M.M., Frederix, Geert W.J., and Hazebroek, Eric J.

Published
2024
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12. Spying on the prior of the number of data clusters and the partition distribution in Bayesian cluster analysis

Author

Greve, Jan, Grün, Bettina, Malsiner-Walli, Gertraud, and Frühwirth-Schnatter, Sylvia

Subjects
Statistics - Methodology
Abstract

Cluster analysis aims at partitioning data into groups or clusters. In applications, it is common to deal with problems where the number of clusters is unknown. Bayesian mixture models employed in such applications usually specify a flexible prior that takes into account the uncertainty with respect to the number of clusters. However, a major empirical challenge involving the use of these models is in the characterisation of the induced prior on the partitions. This work introduces an approach to compute descriptive statistics of the prior on the partitions for three selected Bayesian mixture models developed in the areas of Bayesian finite mixtures and Bayesian nonparametrics. The proposed methodology involves computationally efficient enumeration of the prior on the number of clusters in-sample (termed as ``data clusters'') and determining the first two prior moments of symmetric additive statistics characterising the partitions. The accompanying reference implementation is made available in the R package 'fipp'. Finally, we illustrate the proposed methodology through comparisons and also discuss the implications for prior elicitation in applications.

Published
2020
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14. Co-expressed immune and metabolic genes in visceral and subcutaneous adipose tissue from severely obese individuals are associated with plasma HDL and glucose levels: a microarray study

Author

Wolfs Marcel GM, Rensen Sander S, Bruin-Van Dijk Elinda J, Verdam Froukje J, Greve Jan-Willem, Sanjabi Bahram, Bruinenberg Marcel, Wijmenga Cisca, van Haeften Timon W, Buurman Wim A, Franke Lude, and Hofker Marten H

Subjects
Internal medicine, RC31-1245, Genetics, QH426-470
Abstract

Abstract Background Excessive accumulation of body fat, in particular in the visceral fat depot, is a major risk factor to develop a variety of diseases such as type 2 diabetes. The mechanisms underlying the increased risk of obese individuals to develop co-morbid diseases are largely unclear. We aimed to identify genes expressed in subcutaneous adipose tissue (SAT) and visceral adipose tissue (VAT) that are related to blood parameters involved in obesity co-morbidity, such as plasma lipid and glucose levels, and to compare gene expression between the fat depots. Methods Whole-transcriptome SAT and VAT gene expression levels were determined in 75 individuals with a BMI >35 kg/m2. Modules of co-expressed genes likely to be functionally related were identified and correlated with BMI, plasma levels of glucose, insulin, HbA1c, triglycerides, non-esterified fatty acids, ALAT, ASAT, C-reactive protein, and LDL- and HDL cholesterol. Results Of the approximately 70 modules identified in SAT and VAT, three SAT modules were inversely associated with plasma HDL-cholesterol levels, and a fourth module was inversely associated with both plasma glucose and plasma triglyceride levels (p < 5.33 × 10-5). These modules were markedly enriched in immune and metabolic genes. In VAT, one module was associated with both BMI and insulin, and another with plasma glucose (p < 4.64 × 10-5). This module was also enriched in inflammatory genes and showed a marked overlap in gene content with the SAT modules related to HDL. Several genes differentially expressed in SAT and VAT were identified. Conclusions In obese subjects, groups of co-expressed genes were identified that correlated with lipid and glucose metabolism parameters; they were enriched with immune genes. A number of genes were identified of which the expression in SAT correlated with plasma HDL cholesterol, while their expression in VAT correlated with plasma glucose. This underlines both the singular importance of these genes for lipid and glucose metabolism and the specific roles of these two fat depots in this respect.

Published
2010
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15. Preoperative biliary drainage for periampullary tumors causing obstructive jaundice; DRainage vs. (direct) OPeration (DROP-trial)

Author

Sosef Meindert N, van der Harst Erwin, Kubben Frank JGM, van Laarhoven Cees J, Bonsing Bert A, Boerma Djamila, Rinkes Inne, Klinkenbijl Jean HG, Hesselink Erik J, Greve Jan, Rutten Jan-Paul, Gerritsen Josephus JGM, Kuipers Ernst J, van Eijck Casper HJ, Bruno Marco J, Rauws Erik AJ, de Castro Steve MM, van der Gaag Niels A, Bosscha Koop, de Hingh Ignace HJT, Th de Wit Laurens, van Delden Otto M, Busch Olivier RC, van Gulik Thomas M, Bossuyt Patrick MM, and Gouma Dirk J

Subjects
Surgery, RD1-811
Abstract

Abstract Background Surgery in patients with obstructive jaundice caused by a periampullary (pancreas, papilla, distal bile duct) tumor is associated with a higher risk of postoperative complications than in non-jaundiced patients. Preoperative biliary drainage was introduced in an attempt to improve the general condition and thus reduce postoperative morbidity and mortality. Early studies showed a reduction in morbidity. However, more recently the focus has shifted towards the negative effects of drainage, such as an increase of infectious complications. Whether biliary drainage should always be performed in jaundiced patients remains controversial. The randomized controlled multicenter DROP-trial (DRainage vs. Operation) was conceived to compare the outcome of a 'preoperative biliary drainage strategy' (standard strategy) with that of an 'early-surgery' strategy, with respect to the incidence of severe complications (primary-outcome measure), hospital stay, number of invasive diagnostic tests, costs, and quality of life. Methods/design Patients with obstructive jaundice due to a periampullary tumor, eligible for exploration after staging with CT scan, and scheduled to undergo a "curative" resection, will be randomized to either "early surgical treatment" (within one week) or "preoperative biliary drainage" (for 4 weeks) and subsequent surgical treatment (standard treatment). Primary outcome measure is the percentage of severe complications up to 90 days after surgery. The sample size calculation is based on the equivalence design for the primary outcome measure. If equivalence is found, the comparison of the secondary outcomes will be essential in selecting the preferred strategy. Based on a 40% complication rate for early surgical treatment and 48% for preoperative drainage, equivalence is taken to be demonstrated if the percentage of severe complications with early surgical treatment is not more than 10% higher compared to standard treatment: preoperative biliary drainage. Accounting for a 10% dropout, 105 patients are needed in each arm resulting in a study population of 210 (alpha = 0.95, beta = 0.8). Discussion The DROP-trial is a randomized controlled multicenter trial that will provide evidence whether or not preoperative biliary drainage is to be performed in patients with obstructive jaundice due to a periampullary tumor.

Published
2007
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18. Safety of bariatric surgery in the elderly: results from the Dutch National Registry

Author

de Brauw, L.M., Castro, S.M.M. de, Damen, S.L., Jonker, F.H.W., Apers, J.A., Faneyte, I.F., Greve, J.W.M., Hazebroek, E.J., van’t Hof, G., Janssen, I.M.C., Jutte, E.H., Klaassen, R.A., Lagae, E.A.G.L., Langenhoff, B.S., Liem, R.S.L., Luijten, A.A.P.M., Nienhuijs, S.W., Schouten, R., Smeenk, R.M., Swank, D.J., Wiezer, M.J., Vening, W., Bonouvrie, Daniëlle S., van de Pas, Kelly G.H., Janssen, Loes, Leclercq, Wouter K.G., Greve, Jan Willem M., and van Dielen, François M.H.

Published
2023
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26. Metabolic effects of bariatric surgery on patients with type 2 diabetes: a population-based study

Author

de Brauw, L.M., de Castro, S.M.M., Damen, S.L., Demirkiran, A., Dunkelgrun, M., Faneyte, I.F., van ‘t Hof, G., Janssen, I.M.C., Klaassen, R.A., Lagae, E.A.G.L., Langenhoff, B.S., Luijten, A.A.P.M., Schouten, R., Smeenk, R.M., Swank, D.J., Wiezer, M.J., Vening, W., Akpinar, Erman O., Liem, Ronald S.L., Nienhuijs, Simon W., Greve, Jan Willem M., and Marang-van de Mheen, Perla J.

Published
2021
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29. Weight loss after bariatric surgery: a comparison between delayed and immediate qualification according to the last resort criterion

Author

Demirkiran, Ahmet, van Veen, Ruben, Hazebroek, Eric, Greve, Jan Willem, Wiezer, René M., Swank, Dingeman, Knook, Mireille, Faraj, Dashti, Tseng, Larissa, de Castro, Steve, Marsman, Hendrik, van Tets, Willem, Cense, Huib, Tenhagen, Mark, Boerma, Evert Jan, Fransen, Sophie, Meesters, Berry, Wijffels, Niels, te Riele, Wouter, Derksen, Wouter, Takkenberg, Marijn, Aufenacker, Theo, Vening, Wouter, Witteman, Bart, den Hengst, Willem, Jacobs, Anne, Liem, Ronald S.L., Janssen, Ignace M.C., Tollenaar, Rob A.E. M., and Monpellier, Valerie M.

Published
2021
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31. The First Modified Delphi Consensus Statement for Resuming Bariatric and Metabolic Surgery in the COVID-19 Times

Author

Pouwels, Sjaak, Omar, Islam, Aggarwal, Sandeep, Aminian, Ali, Angrisani, Luigi, Balibrea, Jose María, Bhandari, Mohit, Biter, L. Ulas, Blackstone, Robin P., Carbajo, Miguel A., Copaescu, Catalin A., Dargent, Jerome, Elfawal, Mohamed Hayssam, Fobi, Mathias A., Greve, Jan-Willem, Hazebroek, Eric J., Herrera, Miguel F., Himpens, Jacques M., Hussain, Farah A., Kassir, Radwan, Kerrigan, David, Khaitan, Manish, Kow, Lilian, Kristinsson, Jon, Kurian, Marina, Lutfi, Rami Edward, Moore, Rachel L., Noel, Patrick, Ozmen, Mahir M., Ponce, Jaime, Prager, Gerhard, Purkayastha, Sanjay, Rafols, Juan Pujol, Ramos, Almino C., Ribeiro, Rui J. S., Sakran, Nasser, Salminen, Paulina, Shabbir, Asim, Shikora, Scott A., Singhal, Rishi, Small, Peter K., Taylor, Craig J., Torres, Antonio J., Vaz, Carlos, Yashkov, Yury, and Mahawar, Kamal

Published
2021
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33. Weight Loss and Glycemic Control After Bariatric Surgery in Adolescents With Severe Obesity: A Randomized Controlled Trial

Author

Roebroek, Yvonne G.M., primary, Paulus, Givan F., additional, Talib, Ali, additional, van Mil, Edgar G.A.H., additional, Vreugdenhil, Anita C.E., additional, Winkens, Bjorn, additional, Stehouwer, Coen D.A., additional, Greve, Jan-Willem M., additional, Bouvy, Nicole D., additional, and van Heurn, L.W.Ernest., additional

Published
2023
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35. The first consensus statement on revisional bariatric surgery using a modified Delphi approach

Author

Mahawar, Kamal K., Himpens, Jacques M., Shikora, Scott A., Ramos, Almino C., Torres, Antonio, Somers, Shaw, Dillemans, Bruno, Angrisani, Luigi, Greve, Jan Willem M., Chevallier, Jean-Marc, Chowbey, Pradeep, De Luca, Maurizio, Weiner, Rudolf, Prager, Gerhard, Vilallonga, Ramon, Adamo, Marco, Sakran, Nasser, Kow, Lilian, Lakdawala, Mufazzal, Dargent, Jerome, Nimeri, Abdelrahman, and Small, Peter K.

Published
2020
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43. The impact of society on management control systems

Author

Greve, Jan, Ax, Christian, Bedford, David S., Bednarek, Piotr, Brühl, Rolf, Dergård, Johan, Ditillo, Angelo, Dossi, Andrea, Gosselin, Maurice, Hoozée, Sophie, Israelsen, Poul, Janschek, Otto, Johanson, Daniel, Johansson, Tobias, Madsen, Dag Øivind, Malmi, Teemu, Rohde, Carsten, Sandelin, Mikko, Strömsten, Torkel, Toldbod, Thomas, and Willert, Jeanette

Published
2017
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48. Endoscopic Duodenal-Jejunal Bypass Liner Treatment for Type 2 Diabetes and Obesity: Glycemic and Cardiovascular Disease Risk Factor Improvements in 1,022 Patients Treated Worldwide

Author

Ryder, Robert E.J., primary, Laubner, Katharina, additional, Benes, Marek, additional, Haluzik, Martin, additional, Munro, Lynne, additional, Frydenberg, Harry, additional, Teare, Julian P., additional, Ruban, Aruchana, additional, Fishman, Sigal, additional, Santo, Erwin, additional, Stengel, Rainer, additional, De Jonge, Charlotte, additional, Greve, Jan W., additional, Cohen, Ricardo V., additional, Aboud, Cristina M., additional, Holtmann, Gerald J., additional, Rich, Graeme, additional, McMaster, Jess J., additional, Battelino, Tadej, additional, Kotnik, Primoz, additional, Byrne, James P., additional, Mason, John C., additional, Bessell, Justin, additional, Bascomb, Jeanine, additional, Kow, Lillian, additional, Collins, Janes, additional, Chisholm, Jacob, additional, Pferschy, Peter N., additional, Sourij, Harald, additional, Cull, Melissa L., additional, Wyres, Melanie C., additional, Drummond, Russell, additional, McGowan, Barbara, additional, Amiel, Stephanie A., additional, Yadagiri, Mahi, additional, Sen Gupta, Piya, additional, Aberle, Jens, additional, and Seufert, Jochen, additional

Published
2023
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