Seit 2018
stv. Leiter Medizinische Klinik, Claraspital Basel

Seit 2012
Chefarzt Innere Medizin/Endokrinologie mit Ernährungszentrum, Claraspital Basel

2006
Lehrauftrag für das Sportmedizinische Institut der Universität Basel, Masterstudiengang «Adapted Physical Activity»

2005
Ernennung zum ausserplanmässigen Professor der medizinischen Fakultät Freiburg i. Br. für das Fach Innere Medizin

2001 - 2011
Leiter Interdisziplinäres Ernährungs- und Stoffwechselzentrum, Claraspital, Basel

2001
Facharztprüfung Endokrinologie und Diplom als Ernährungsmediziner DGEM

1999
Habilitation zum Thema: Molekularbiologische Untersuchungen zur Posttransfusionshepatitis C

1997
Facharztprüfung Gastroenterologie

1996
Facharztprüfung  Innere Medizin

1989 – 2001
Medizinische Universitätsklinik Freiburg, Abteilung Hepatologie, Gastroenterologie und Endokrinologie,

Facharztausbildung zum Internisten, Gastroenterologen, Endokrinologen und Diabetologen

1987 – 1989
Stipendiat der Deutschen Forschungsgemeinschaft am Biochemischen Institut der Universität Freiburg

1986 – 1987
Wehrdienst als Anästhesist am Bundeswehrkrankenhaus Bad Zwischenahn

1985
Promotion

1979 – 1985
Studium der Humanmedizin in Freiburg und Oxford

• FMH Schweizerische Ärztegesellschaft
• Schweizerische Gesellschaft für Endokrinologie und Diabetologie (SGED/SSED)
• Ärztekommission der Diabetesgesellschaft der Region Basel (DGRB)
• Verein Forschung und Leben, Zürich
• Deutsche Gesellschaft für Endokrinologie (DGE)
• Deutsche Diabetesgesellschaft (DDG)
• Deutsche Gesellschaft für Ernährungsmedizin (DGEM)
• Swiss society for the study of Morbid Obesity and Metabolic disorders (SMOB)

• Kraljević M, Cordasco V, Schneider R, Peters T, Slawik M, Wölnerhanssen B, Peterli R: Correction to: Long-Term Effects of Laparoscopic Sleeve Gastrectomy: What Are the Results beyond 10 Years? 2021: Obesity surgery 31: 3434–3435.
• Schneider R, Schulenburg M, Kraljević M, Klasen JM, Peters T, Wölnerhanssen B, Peterli R: Does the non-absorbable suture closure of the jejunal mesenteric defect reduce the incidence and severity of internal hernias after laparoscopic Roux-en-Y gastric bypass? 2021: Langenbeck’s archives of surgery 406: 1831–1838.
• Bühler J, Rast S, Beglinger C, Peterli R, Peters T, Gebhart M, Meyer- Gerspach AC, Wölnerhanssen BK: Long-Term Effects of Laparoscopic Sleeve Gastrectomy and Roux-en-Y Gastric Bypass on Body Composition and Bone Mass Density. 2021: Obesity facts 14: 131–140.
• Kraljević M, Cordasco V, Schneider R, Peters T, Slawik M, Wölnerhanssen B, Peterli R: Long-term Effects of Laparoscopic Sleeve Gastrectomy: What Are the Results Beyond 10 Years? 2021: Obesity surgery 31: 3427–3433.
• Stillhard B, Ngo BTT, Peterli R, Peters T, Schneider R, Kraljević M, Slawik M, Wölnerhanssen B: Preoperative Cardiac Diagnostics in Bariatric Patients with Diabetes and Perioperative Morbidity: Results of a Cohort of 258 Patients. 2021: Obesity surgery 31: 2607–2613.
• Nussbaumer R, Meyer-Gerspach AC, Peterli R, Peters T, Beglinger C, Chiappetta S, Drewe J, Wölnerhanssen BK. First-Phase Insulin and Amylin after Bariatric Surgery: A Prospective Randomized Trial on Patients with Insulin Resistance or Diabetes after Gastric Bypass or Sleeve Gastrectomy. Obesity Facts. 2020 Dec. 13(6):584-595. DOI: 10.1159/000511928 °authors contributed equally to the manuscript
• Linke K, Schneider R, Gebhart M, Ngo T, Slawik M, Peters T, Peterli R: Outcome of revisional bariatric surgery for insufficient weight loss after laparoscopic Roux-en-Y gastric bypass: an observational study. Surg Obes Relat Dis. 2020 Aug; 16(8): 1052–1059
• Kern B, Peters T; Hypokalzämie nach totaler Thyreoidektomie. Journal für klinische Endokrinologie und Stoffwechsel. Heft 4, Jahrgang 12, November 2019: 154–158
• Schlayer H, Laaf H, Peters T, Woort-Menker M, Estler H, Karck U, Schaefer H Decker K.Involvement of tumor necrosis factor in endotoxin triggered neutrophil adherence to sinusoidal endothelial cells of mouse liver and its modulation in the acute phase. J Hepatol 1988;7, 239-249
• Karck, U, Peters, T, Decker K The release of tumor necrosis factor from endotoxin-stimu¬lated rat Kupffer cells is regulated by prostaglandin E2 and dexa¬methasone.. J Hepatol  1988;7, 352-361
• Decker T, Lohmann-Matthes M,  Karck U, Peters T, Decker K. Comparative study of cytotoxicity, tumor necrosis factor, and prostaglandin release after stimulation of rat Kupffer cells, murine Kupffer cells and murine inflammatory liver macro¬phages. J Leucocyte Biol 1989;45, 139-146
• Dieter P, Peters T, Schulze-Specking A, Decker K. Independent regulation of thromboxane and prostaglandin synthesis in liver macrophages. Biochem Pharmacol 1989;38, 1577-1588
• Peters T, Karck U, Decker K. Interdependence of tumor necrosis factor, prostaglandin E2 and protein synthesis in lipopolysaccharide-exposed rat Kupffer cells. Eur J Biochem1990;191, 583-589
• Peters T, Gaillard T, Decker K. Tumor necrosis factor alpha stimulates prostaglandin but not superoxide synthesis in rat Kupffer cells. Eicosanoids 1990;2, 115-120
• Lang B, Riegel W, Peters T, Peter H.Low dose methotrexate therapy for rheumatoid arthritis complicated by pancytopenia and pneumocystis carinii pneumonia. J Rheumatol 1991;18, 1257-1259
• Peters T, Schlayer H, Preisler S, Kopp B, Berthold H, Gerok W, Rasenack J. Frequency of hepatitis C in acute post-transfusion hepatitis after open-heart surgery. A prospective study in 1500 patients. J Med Virol 1991;39, 139-145
• Schlayer H, Peters T, Preisler S,  Berthold H, Gerok W, Rasenack J. Clin Invest 1991;70, 579-584 Cause and Frequency of posttransfusion hepatitis after open heart surgery in Germany.
• Schlayer H, Peters T, Preisler S, Fehr J, Gerok W, Rasenack W. Amplification of unknown DNA-sequences by sequence independent nested polymerase chain reaction using a standardized adaptor without specific primers. J Virol Meth 1992;38, 333-341
• Preissler-Adams S, Schlayer H, Peters T, Korp R, Rasenack J. Complete nucleotide sequence of a hepatitis B virus, subtype adw2, and identification of three types of C open reading frame. Nucl Acid Res 1993;21, 2258
• Preissler-Adams S, Schlayer H, Peters T, Hettler F, Gerok W, Rasenack J. Sequence analysis of hepatitis B virus DNA in immunologically negative infection. Arch Virol 1993;133, 385-396
• Peters T, Gaissmaier C,  Herbst E. Die akute pulmonale Hypertonie als Symptom einer tumorösen Grunderkrankung. Intensivmedizin 1993;30, 509-512
• Peters T, Mohr L,  Scheiffele F, Schlayer H, Preisler S. Antibo¬dies and viremia in acute post-transfusion hepatitis C, a prospec¬tive study. J Med Virol 1994; 42, 420-427
• Rasenack J,  Schlayer H, Hettler F, Peters T, Preissler-Adams S, Gerok W. Hepatitis B virus infection without immunological markers after open-heart surgery. Lancet 1995;345, 355-357
• Grotz W, Peters T, Berthold H, Kirste G, Felten H, Scholl¬meyer P, Ra¬senack J. Immuno¬sup¬pressive thera¬py and hepatitis C virus infection: the clinical course of liver disease. J Molec Med 1996;74, 407-412
• Peters T, Schlayer H, Hiller B, Rös¬ler B, Blum H, Rasenack J. Quasisspecies analysis in hepatitis C virus infection by f¬luo¬rescent single strand confor¬mation poly¬morphism (f-SSCP). J Virol Meth197;64, 95-102
• Grimbacher B, Peters T, Peter H. Lactose-intolerance may induce severe chronic eczema.A clinical case report. Internat Arch Allergy and Immunol 1997;113, 515-518
• Weiner S, Berg T, Berthold H , Weber S, Peters T, Blum H, Hopf U, Peter H. A clinical and virological study on hepatitis C virus related cryoglobulinemia in Germany. J Hepatol 1998;29: 375-384
• Grotz W, Rasenack J, Benzing T, Berthold H, Peters T, Walter E, Schollmeyer P, Rump L. Occurence and management of hepatitis B virus inactivation following kidney transplantation. Clin Neprol 1998;49, 385-388
• Kamal S, Madwar M, Bianchi L, El Tawil A, Fawzy R, Peters T, Rasenack J. Clinical, virological, histopathological features and long-term follow-up in patients with chronic hepatitis C co-infected with S. mansoni. Liver 2000;20(4), 281-289
• Schories M, Peters T, Rasenack J. Isolation, characterization and biological significance of hepatitis B virus mutants from serum of a patient with immunologically negative HBV infection. J Hepatol 2000;33, 799-811
• Kamal S, Madwar M, Peters T, Fawzy R, Rasenack J. Interferon Therapy in Patients with Chronic Hepatitis C and Schistosomiasis. J Hepatol 2000;32(1), 172-174
• Kamal S, Bianchi L, Al Tawil , Koziel M, El Sayed Khalifa K, Peters T, Rasenack J. Specific cellular immune response and cytokine patterns in patients coinfected with hepatitis C virus and Schistosoma mansoni. J Infect Dis 2001;184, 972-982
• Kamal S, Rasenack J, Bianchi L, Al Tawil A, El Sayed Khalifa K, Peters T, Mansour H, Ezzat W, Koziel M. Acute hepatitis C without and with schistosomiasis: correlation with hepatitis C-specific CD4(+) T-cell and cytokine response. Gastroenterol 2001;121, 646-656
• Kamal S, Bianchi L, Al Tawil A, Koziel M, El Sayed Khalifa K, Peters T, Rasenack J. Specific cellular immune response and cytokine patterns in patients coinfected with hepatitis C virus and Schistosoma mansoni. J Infect Dis 2001;184, 972-982
• Kamal S, Rasenack J, Bianchi L, Al Tawil A, El Sayed Khalifa K, Peters T, Mansour H, Ezzat W, Koziel M. Acute hepatitis C without and with schistosomiasis: correlation with hepatitis C-specific CD4(+) T-cell and cytokine response. Gastroenterol 2001; 121, 646-656
• Thiel J, Peters T, Mas Marques A, Rösler B, Peter H, Weiner S. Kinetics of hepatitis C (HCV) viremia and quasispecies during treatment of HCV associated cryoglobulinaemia with pulse cyclophosphamide. Ann Rheum Dis 2002; 61, 0-4
• C. Kamal S, Fehr J,  Roesler B, Peters T, Rasenack J. Peginterferon alone or with ribavirin enhances HCV-specific CD4 T-helper 1 responses in patients with chronic hepatitis Gastroenterol 2002;123, 1070-1083
• Seiler L, Braun S, Borm K, Magerkurth C, Talazko J, Peters T, Reincke M. Autonomic failure mimicing dopamine agonist induced vertigo in a patient with macroprolactinoma. Exp. Clin. Endocrinol Diabetes 2002;110, 364-369
• Peterli R., Donadini A, Peters, T, Ackermann C, Tondelli P. Re-Operations following laparoskopic adjustable gastric banding. Obes Surg 2002;12, 851-856
• Frigg A, Peterli R, Peters T, Ackermann C, Tondelli P Reduction in co-morbidities 4 years after laparoskopic adjustable gastric banding.. Obes Surg 2004;14, 216-223
• Schories M, Peters T, Rasenack J, Reincke M. Islet-cell antibodies and type 1 diabetes after treatment with interferon-alpha. Dtsch Med Wochenschr 2004;129, 1120-1124
• Herrle, F, Peters T, Lang C, von Flüe M, Kern B, Peterli R Bolus obstruction after gastric banding caused by granular bulk laxative.. Obes Surg 2004;14, 1022-1024
• Schütz P, Ludwig C, Peterli R, Peters T. Fatigue, weakness and sexual dysfunction after bariatric surgery – not an unusual case but an unusual cause. Obes. Surg.2004; 14, 1025-1028
• Kühne M, Ludwig C, Peters T.  A Stroke of Luck in a ninety-year old woman. Lancet 2004;364, 2152
• Kamal S, Ismail A, Graham C, He Q, Rasenack J, Peters T, Tawil A, Fehr J, Khalifa K, Madwar M, Koziel M. Pegylated interferon alpha therapy in acute hepatitis C: relation to hepatitis C virus- specific T cell response kinetics. Hepatol 2004;39, 1721-1731
• Wolnerhanssen B, Kern B, Peters T, Ackermann C, von Flue M, Peterli R. Reduction in slippage with 11-cm Lap-Band and change of gastric banding technique. Obes Surg 2005;15, 1050-1054
• Peterli R, Peters T, von Fluee M, Hoch M, Eberle A. Melanocortin-4-receptor gene and complications after gastric banding. Obes Surg 2006;16, 189-195
• Hoch M, Eberle A, Wagner U, Bussmann C, Peters T, Peterli R. Expression and localization of melanocortine-1 receptor in human adipose tissues of morbidly obese patients. Obesity  2007;15(1), 40-49
• Peterli R, Woelnerhansen B, Kern B, Ackermann C, von Fluee M, Peters T. Prospective Study of a Unique two-stage-therapy-concept in the treatment of morbid obesity: primary lapBand® followed by bilio-pancreatic diversion (BPD). Obes Surg 2007; 17, 334-340
• Baierlein SA, Wistop A, Looser C, Peters T, Riehle H, von Fluee M, Peterli R. Abdominal Actinomycosis: a rare complication after laporoscopic gastric bypass. Obes Surg 2007;17(8), 1123-1126
• Hoch M, Eberle A, Peterli R, Peters T, Seboek D, Keller U, Muller B, Linscheid P. LPS induces interleukin-6 and interleukin-8 but not tumor necrosis factor-alpha in human adipocytes. Cytokine 2008;41, 29-37
• Pfefferkorn U, Peters T, Peterli R.Recurrent pancreatitis as only presenting symptom of intermittent small bowel obstruction after biliopancreatic diversion with duodenal switch. Surg Obes Relat Dis 2008;4, 202-204
• Wölnerhanssen BK, Peters T, Kern B, Schötzau A, Ackermann C, von Fluee M, Peterli R. Predictors of outcome in treatment of morbid obesity by laparoscopic adjustable gastric banding: results of a prospective study of 380 patients. Surg Obes Relat Dis 2008; 4, 500-506
• Hoch M, Hirzel E, Lindinger P, Eberle AN, Linscheid P, Martin I, Peters T, Peterli R.Weak functional coupling of the melanocortin-1 receptor expressed in human adipocytes. J Recept Sing Tranduct Res 2008;28, 484-504
• N. Meyer,  T. Peters,  M. Schumacher. Multiple aneurysms of the facial artery in hereditary hemorrhagic teleangiectasia-Case report and review of the literature. European Journal of Radiology Extra 2008;65(3), 73-78
• Baierlein SA, Wistop A,  Peters T. Case 20-2008. N Engl J Med 2008 Oct 23;359(17),1851-1852; author reply 1852.
• Uglioni B, Wölnerhanssen B, Peters T, Christoffel-Courtin C, Kern B, Peterli R. Midterm results of primary vs. secondary laporoscopic sleeve gastrectomy (LSG) as an isolated operation. Obes Surg 2009;19 (4), 401-406
• Peterli R, Wölnerhanssen B, Peters T, Devaux N, Kern B, Christoffel-Courtin  C, Drewe J, von Flüe M, Beglinger C. Improvement in glucose metabolism after bariatric surgery: comparison of laparoscopic Roux-en-Y gastric bypass and laparoscopic sleeve gastrectomy: a prospective randomized trial. Ann Surg 2009; 250(2), 234-241
• Lindinger A, Peterli R, Peters T, Kern B, von Flüe M, Calame M, Hoch M, Eberle AN, Lindinger PW. Mitochondrial DNA content in human omental adipose tissue. Obes Surg 2010;20(1), 84-92
• Gehrer S, Kern B, Peters T, Christoffel-Courtin C, Peterli R. Fewer Nutrient Deficiencies after Laparoscopic Sleeve Gastrectomy (LSG) than after Laparoscopic Roux-Y-Gastric Bypass (LRYGB)-a Prospective Study. Obes Surg 2010; 20(4), 447-53
• B. Kern, T. Peters.Hypokalzämie nach totaler Thyreoidektomie: Welche Patienten sind gefährdet? Journal für klinische Endokrinologie und Stoffwechsel 2010;3(4), 32-35
• T. Peters. Bariatrische Operationen Vor- und Nachsorge. Leading Opinions Kardiologie und Gefässmedizin 2010;2, 12-13
• Woelnerhanssen B, Peterli R, Steinert RE, Peters T, Borbély Y, Beglinger C. Effects of postbariatric surgery weight loss on adipokines and metabolic parameters: comparison of laparoscopic Roux-en-Y gastric bypass and laparoscopic sleeve gastrectomy-a prospective randomized trial. Surg Obes Relat Dis. 2011;7(5), 561-568
• Peterli R, Steinert RE, Woelnerhanssen B, Peters T, Christoffel-Courtin C, Gass M, Kern B, von Fluee M, Beglinger C. Metabolic and hormonal changes after laparoscopic Roux-en-Y gastric bypass and sleeve gastrectomy: a randomized, prospective trial. Obes Surg 2012;22(5), 740-748
• Risk factors for secondary hyperparathyroidism after bariatric surgery: a comparison of 4 different operations and of vitamin D-receptor-polymorphism. Toelle P, Peterli R, Zobel I, Noppen C, Christoffel-Courtin C, Peters T. Exp Clin Endocrinol Diabetes. 2012; 120(10), 629-634
• Bile acids and gut peptide secretion after bariatric surgery: a 1-year prospective randomized pilot trial. Steinert RE, Peterli R, Keller S, Meyer-Gerspach AC, Drewe J, Peters T, Beglinger C. Obesity (Silver Spring) 2013; 21(12), E660-668
• Early results of the Swiss Multicentre Bypass or Sleeve Study (SM-BOSS): a prospective randomized trial comparing laparoscopic sleeve gastrectomy and Roux-en-Y gastric bypass. Peterli R, Borbély Y, Kern B, Gass M, Peters T, Thurnheer M, Schultes B, Laederach K, Bueter M, Schiesser M. Ann Surg 2013;258(5), 690-694
• Obesity affects mitochondrial citrate synthase in human omental adipose tissue. Christe M, Hirzel E, Lindinger A, Kern B, von Flüe M, Peterli R, Peters T, Eberle A, Lindinger P. ISRN Obes 2013;826027. doi: 10.1155/2013/826027
• Five-year results of laparoscopic sleeve gastrectomy. Sieber P, Gass M, Kern B, Peters T, Slawik M, Peterli R. Surg Obes Relat Dis 2014;10(2), 243-249
• Secondary HPT after bariatric surgery. Peters T, Toelle P, Gebhart M, Slawik M. Clinical reviews in bone and mineral metabolism 2014;12(4), 228-233
• Gastric ulcer: An old disease- a new cause. Urban S, Manz M, Zettl A, Peters T, Baumann K, von Fluee M. J Gastrointest Dig Dis Syst 2014;4(6) http://dx.doi.org/10.4172/2161-069X.1000241
• Important mitochondrial proteins in human omental adipose tissue show reduced expression in obesity. Lindinger P, Christe M, Eberle A, Kern B, Peterli R, Peters T, Jayawardene K, Fearnley I, Walker J. J Proteomics 2015;124, 79-87
• Important mitochondrial proteins in human omental adipose tissue show reduced expression in obesity.Lindinger P, Christe M, Eberle A, Kern B, Peterli R, Peters T, Jayawardene K, Fearnley I, Walker J.Data Brief. 2015; 23(4), 40-3. doi: 10.1016/j.dib.2015.04.007
• Wölnerhanssen B, Meyer-Gerspach A, Peters T, Beglinger C, Peterli R. Incretin effects, gastric emptying and insulin responses to low oral glucose loads in patients after gastric bypass and lean and obese controls. Surg Obes Relat Dis 2015; DOI: http://dx.doi.org/10.1016/j.soard.2015.11.022
• Peters T. Ernährung bei chronisch entzündlichen Darmerkrankungen. Falk Gastro-Kolleg Darm 9/2015
• Schneider J, Peterli R, Gass M, Slawik M, Peters T, Wölnerhanssen B. Laparoscopic sleeve gastrectomy and Roux-en-Y gastric bypass lead to equal changes in body composition and energy metabolism 17 months postoperatively: a prospective randomized trial. Surg Obes Relat Dis. 2015 Jul 9. pii: S1550-7289(15)00287-7. doi: 10.1016/j.soard.2015.07.002
• Schneider R, Gass J, Kern B, Peters T, Slawik M, Gebhart M, Peterli R. Linear compared to circular stapler anastomosis in laparoscopic Roux-Y gastric bypass leads to comparable weight loss with fewer complications: a matched pair study. Langenbecks Arch Surg 2016(401):307-313
• Wölnerhanssen BK, Meyer-Gerspach AC, Peters T, Beglinger C, Peterli R. Incretin effects, gastric emptying and insulin responses to low oral glucose loads in patients after gastric bypass and lean and obese controls. Surg Obes Relat Dis. 2016 Aug;12(7):1320-1327. doi: 10.1016/j.soard.2015.11.022
• Peters T. Fructose nützlich oder schädlich: immer eine Frage der Dosis. Praxis 2016: 105(13):1-1
• Gillis C, Roque PS, Bläss J, Urwyler A, Schepperle H, Kunz G, Peters T, Schricker, Wykes, Kopp Lugli. High dose amino acid administration achieves an anabolic response in type 2 diabetic patients that is independent of glycaemic control: A randomized clinical trial. Clin Nutr. 2017 May 3. pii: S0261-5614(17)30155-3. doi: 10.1016/j.clnu.2017.04.016.
• Peterli R, Wölnerhanssen BK, Vetter D, Nett P, Gass M, Borbély Y, Peters T, Schiesser M, Schultes B, Beglinger C, Drewe J, Bueter M..Laparoscopic Sleeve Gastrectomy Versus Roux-Y-Gastric Bypass for Morbid Obesity-3-Year Outcomes of the Prospective Randomized Swiss Multicenter Bypass Or Sleeve Study (SM-BOSS). Ann Surg. 2017 Mar;265(3):466-473. doi: 0.1097/SLA.0000000000001929
• Gillis C., Roque P.S., Bläss J., Urwyler A., Schepperle H., Kunz G., Peters T, Schricker, Wykes, Kopp Lugli.: High- Dose Amino Acid Administration Achieves an Anabolic Response in Type 2 Diabetic Patients that Is Independent of Glycaemic Control: A Randomized Clinical Trial. Clin Nutr. 2017 May 3; pii: S0261-5614(17)30155-3
• Ralph Peterli, M.D., Bettina Karin Wölnerhanssen, M.D., Thomas Peters, M.D., Diana Vetter, M.D., Dino Kröll, M.D., Yves Borbély, M.D., Bernd Schultes, M.D., Christoph Beglinger, M.D., Juergen Drewe , M.D., MSc., Marc Schiesser, M.D., Philipp Nett, M.D., Marco Bueter, M.D., PhD. Effect of laparoscopic sleeve gastrectomy vs laparoscopic Roux-en-Y gastric bypass on weight loss in patients with morbid obesity: The SM-BOSS randomized clinical trial JAMA. 2018;319(3):1-11 | doi:10.1001/jama.2017.20897