Publications 2023

Anundsen TK, Førland DT, Johannessen HO, Johnson E (2023)
Outcome after stent and endoscopic vacuum therapy-based treatment for postemetic esophageal rupture
Scand J Gastroenterol, 59 (1), 1-6
DOI 10.1080/00365521.2023.2248537, PubMed 37592384

Publications 2022

Hauge T, Førland DT, Johannessen HO, Johnson E (2022)
Short- and long-term outcomes in patients operated with total minimally invasive esophagectomy for esophageal cancer
Dis Esophagus, 35 (5)
DOI 10.1093/dote/doab061, PubMed 34491299

Mala T, Førland D, Skagemo C, Glomsaker T, Johannessen HO, Johnson E (2022)
Early experience with total robotic D2 gastrectomy in a low incidence region: surgical perspectives
BMC Surg, 22 (1), 137
DOI 10.1186/s12893-022-01576-1, PubMed 35397558

Pinto R, Hauge T, Jeanmougin M, Pharo HD, Kresse SH, Honne H, Winge SB, Five MB, Kumar T, Mala T, Hauge T, Johnson E, Lind GE (2022)
Targeted genetic and epigenetic profiling of esophageal adenocarcinomas and non-dysplastic Barrett's esophagus
Clin Epigenetics, 14 (1), 77
DOI 10.1186/s13148-022-01287-7, PubMed 35701814

Publications 2021

Haug HM, Carlsen E, Johannessen HO, Johnson E (2021)
Short-, long-, and very long-term results of secondary anterior sphincteroplasty in 20 patients with obstetric injury
Int J Colorectal Dis, 36 (12), 2775-2778
DOI 10.1007/s00384-021-04026-1, PubMed 34528117

Publications 2020

Durbeck A, Johannessen HO, Drolsum A, Johnson E (2020)
Very long-term outcome after resection rectopexy for internal rectal intussusception
Scand J Gastroenterol, 56 (1), 122-127
DOI 10.1080/00365521.2020.1853221, PubMed 33253596

Fagerhol MK, Johnson E, Tangen JM, Hollan I, Mirlashari MR, Nissen-Meyer LSH, Hetland G (2020)
NETs analysed by novel calprotectin-based assays in blood donors and patients with multiple myeloma or rheumatoid arthritis: A pilot study
Scand J Immunol, 91 (5), e12870
DOI 10.1111/sji.12870, PubMed 32034957

Gharagozlian S, Mala T, Brekke HK, Kolbjørnsen LC, Ullerud ÅA, Johnson E (2020)
Nutritional status, sarcopenia, gastrointestinal symptoms and quality of life after gastrectomy for cancer - A cross-sectional pilot study
Clin Nutr ESPEN, 37, 195-201
DOI 10.1016/j.clnesp.2020.03.001, PubMed 32359743

Hauge T, Amdal CD, Falk RS, Johannessen HO, Johnson E (2020)
Long-term outcome in patients operated with hybrid esophagectomy for esophageal cancer - a cohort study
Acta Oncol, 59 (7), 859-865
DOI 10.1080/0284186X.2020.1750694, PubMed 32324079

Hauge T, Franco-Lie I, Løberg EM, Hauge T, Johnson E (2020)
Outcome after endoscopic treatment for dysplasia and superficial esophageal cancer - a cohort study
Scand J Gastroenterol, 55 (9), 1132-1138
DOI 10.1080/00365521.2020.1800813, PubMed 32748653

Hetland G, Johnson E, Bernardshaw SV, Grinde B (2020)
Can medicinal mushrooms have prophylactic or therapeutic effect against COVID-19 and its pneumonic superinfection and complicating inflammation?
Scand J Immunol, 93 (1), e12937
DOI 10.1111/sji.12937, PubMed 32657436

Hetland G, Tangen JM, Mahmood F, Mirlashari MR, Nissen-Meyer LSH, Nentwich I, Therkelsen SP, Tjønnfjord GE, Johnson E (2020)
Antitumor, Anti-Inflammatory and Antiallergic Effects of Agaricus blazei Mushroom Extract and the Related Medicinal Basidiomycetes Mushrooms, Hericium erinaceus and Grifola frondosa: A Review of Preclinical and Clinical Studies
Nutrients, 12 (5)
DOI 10.3390/nu12051339, PubMed 32397163

Mala T, Forland DT, Vetti HH, Skagemo CU, Johannessen HO, Johnson E (2020)
Gastric adenocarcinoma and proximal ventricular polyposis - a rare form of hereditary stomach cancer
Tidsskr. Nor. Laegeforen., 140 (7), 676-679

Mala T, Førland DT, Vetti HH, Skagemo CU, Johannessen HO, Johnson E (2020)
[Gastric adenocarcinoma and proximal polyposis of the stomach – a rare form of hereditary gastric cancer]
Tidsskr Nor Laegeforen, 140 (7)
DOI 10.4045/tidsskr.19.0480, PubMed 32378851

Publications 2019

Hauge T, Kleven OC, Johnson E, Hofstad B, Johannessen HO (2019)
Outcome after iatrogenic esophageal perforation
Scand J Gastroenterol, 54 (2), 140-144
DOI 10.1080/00365521.2019.1575464, PubMed 30857441

Johnson E, Therkelsen SP, Nentwich I, Nissen-Meyer LSH, Hetland G (2019)
IgE-sensitization to food and inhalant allergens in IBD patients compared with normal blood donors at Oslo University Hospital, Norway
Scand J Gastroenterol, 54 (9), 1107-1110
DOI 10.1080/00365521.2019.1663445, PubMed 31524013

Publications 2018

Hauge T, Kleven OC, Johnson E, Hofstad B, Johannessen HO (2018)
Outcome after stenting and débridement for spontaneous esophageal rupture
Scand J Gastroenterol, 53 (4), 398-402
DOI 10.1080/00365521.2018.1448886, PubMed 29523026

Hauge T, Kleven OC, Johnson E, Hofstad B, Johannessen HO (2018)
Outcome after accidental food bolus-induced esophageal perforation
Scand J Gastroenterol, 53 (8), 905-909
DOI 10.1080/00365521.2018.1495760, PubMed 30231806

Mala T, Johannessen HO, Forland D, Jacobsen TH, Johnson E (2018)
Laparoscopic resection of ventricular cancer at Oslo University Hospital, Ulleval 2015-18
Tidsskr. Nor. Laegeforen., 138 (18), 1718-1723

Mala T, Johannessen HO, Førland D, Jacobsen TH, Johnson E (2018)
[Laparascopic resection for gastric cancer at Oslo University Hospital, Ullevål 2015–18]
Tidsskr Nor Laegeforen, 138 (18)
DOI 10.4045/tidsskr.18.0404, PubMed 30421737

Publications 2017

Amdal CD, Jacobsen AB, Falk RS, Johnson E, Os SS, Warloe T, Bjordal K (2017)
Improved treatment decisions in patients with esophageal cancer
Acta Oncol, 56 (10), 1286-1294
DOI 10.1080/0284186X.2017.1346379, PubMed 28686501

Farnes I, Johnson E, Johannessen HO (2017)
Management of gastric conduit retention following hybrid and minimally invasive esophagectomy for esophageal cancer: Two retrospective case series
Int J Surg Case Rep, 41, 505-510
DOI 10.1016/j.ijscr.2017.11.040, PubMed 29546028

Publications 2016

Grøtting MS, Løberg EM, Johannessen HO, Johnson E (2016)
Resection for oesophageal cancer - complications and survival
Tidsskr Nor Laegeforen, 136 (9), 809-13
DOI 10.4045/tidsskr.15.1136, PubMed 27221180

Therkelsen SP, Hetland G, Lyberg T, Lygren I, Johnson E (2016)
Effect of a Medicinal Agaricus blazei Murill-Based Mushroom Extract, AndoSan™, on Symptoms, Fatigue and Quality of Life in Patients with Ulcerative Colitis in a Randomized Single-Blinded Placebo Controlled Study
PLoS One, 11 (3), e0150191
DOI 10.1371/journal.pone.0150191, PubMed 26933886

Therkelsen SP, Hetland G, Lyberg T, Lygren I, Johnson E (2016)
Effect of the Medicinal Agaricus blazei Murill-Based Mushroom Extract, AndoSanTM, on Symptoms, Fatigue and Quality of Life in Patients with Crohn's Disease in a Randomized Single-Blinded Placebo Controlled Study
PLoS One, 11 (7), e0159288
DOI 10.1371/journal.pone.0159288, PubMed 27415795

Therkelsen SP, Hetland G, Lyberg T, Lygren I, Johnson E (2016)
Cytokine Levels After Consumption of a Medicinal Agaricus blazei Murill-Based Mushroom Extract, AndoSan^™ , in Patients with Crohn's Disease and Ulcerative Colitis in a Randomized Single-Blinded Placebo-Controlled Study
Scand J Immunol, 84 (6), 323-331
DOI 10.1111/sji.12476, PubMed 27588816

Publications 2015

Hugin S, Johnson E, Johannessen HO, Hofstad B, Olafsen K, Mellem H (2015)
Gastrobronchial fistula following minimally invasive esophagectomy for esophageal cancer in a patient with myotonic dystrophy: Case report
Int J Surg Case Rep, 17, 31-5
DOI 10.1016/j.ijscr.2015.10.023, PubMed 26520033

Publications 2014

Hauge T, Johnson E, Sandstad O, Johannessen HO, Trondsen E (2014)
Surgical treatment of epiphrenic oesophageal diverticulum
Tidsskr Nor Laegeforen, 134 (10), 1047-50
DOI 10.4045/tidsskr.13.1336, PubMed 24865729

Vogel LK, Sæbø M, Høyer H, Kopp TI, Vogel U, Godiksen S, Frenzel FB, Hamfjord J, Bowitz-Lothe IM, Johnson E, Kure EH, Andersen V (2014)
Intestinal PTGS2 mRNA levels, PTGS2 gene polymorphisms, and colorectal carcinogenesis
PLoS One, 9 (8), e105254
DOI 10.1371/journal.pone.0105254, PubMed 25166592

Publications 2013

Hovde Ø, Haugen Lie Ø, Johansson PA, Stubhaug Ø, Johnson E, Hofstad B, Hauge T (2013)
Iatrogenic esophago-tracheal fistula: challenges in diagnosis and management
World J Gastroenterol, 19 (4), 594-6
DOI 10.3748/wjg.v19.i4.594, PubMed 23382643

Publications 2012

Johnson E, Førland DT, Hetland G, Sætre L, Olstad OK, Lyberg T (2012)
Effect of AndoSan™ on expression of adhesion molecules and production of reactive oxygen species in human monocytes and granulocytes in vivo
Scand J Gastroenterol, 47 (8-9), 984-92
DOI 10.3109/00365521.2012.660544, PubMed 22564240

Johnson E, Kjellevold K, Johannessen HO, Drolsum A (2012)
Long-term outcome after resection rectopexy for internal rectal intussusception
ISRN Gastroenterol, 2012, 824671
DOI 10.5402/2012/824671, PubMed 23346411

Kolseth IB, Førland DT, Risøe PK, Flood-Kjeldsen S, Ågren J, Reseland JE, Lyngstadaas SP, Johnson E, Dahle MK (2012)
Human monocyte responses to lipopolysaccharide and 9-cis retinoic acid after laparoscopic surgery for colon cancer
Scand J Clin Lab Invest, 72 (8), 593-601
DOI 10.3109/00365513.2012.721520, PubMed 23094762

Publications 2011

Bornholdt J, Friis S, Godiksen S, Poulsen SS, Santoni-Rugiu E, Bisgaard HC, Lothe IM, Ikdahl T, Tveit KM, Johnson E, Kure EH, Vogel LK (2011)
The level of claudin-7 is reduced as an early event in colorectal carcinogenesis
BMC Cancer, 11, 65
DOI 10.1186/1471-2407-11-65, PubMed 21310043

Hetland G, Johnson E, Lyberg T, Kvalheim G (2011)
The Mushroom Agaricus blazei Murill Elicits Medicinal Effects on Tumor, Infection, Allergy, and Inflammation through Its Modulation of Innate Immunity and Amelioration of Th1/Th2 Imbalance and Inflammation
Adv Pharmacol Sci, 2011, 157015
DOI 10.1155/2011/157015, PubMed 21912538

Publications 2010

Gondal G, Johnson E, Paulsen V, Hasan B (2010)
[Treatment of neutropenic enterocolitis]
Tidsskr Nor Laegeforen, 130 (2), 143-5
DOI 10.4045/tidsskr.08.0089, PubMed 20125203

Johnson E, Carlsen E, Steen TB, Backer Hjorthaug JO, Eriksen MT, Johannessen HO (2010)
Short- and long-term results of secondary anterior sphincteroplasty in 33 patients with obstetric injury
Acta Obstet Gynecol Scand, 89 (11), 1466-72
DOI 10.3109/00016349.2010.519019, PubMed 20955101

Publications 2008

Gondal G, Johnson E, Johannessen HO, Hofstad B (2008)
[Treatment of oesophageal perforations]
Tidsskr Nor Laegeforen, 128 (9), 1050-2
PubMed 18451885

Publications 2007

Bernardshaw S, Lyberg T, Hetland G, Johnson E (2007)
Effect of an extract of the mushroom Agaricus blazei Murill on expression of adhesion molecules and production of reactive oxygen species in monocytes and granulocytes in human whole blood ex vivo
APMIS, 115 (6), 719-25
DOI 10.1111/j.1600-0463.2007.apm_619.x, PubMed 17550380

Publications 2006

Bernardshaw S, Hetland G, Grinde B, Johnson E (2006)
An extract of the mushroom Agaricus blazei Murill protects against lethal septicemia in a mouse model of fecal peritonitis
Shock, 25 (4), 420-5
DOI 10.1097/01.shk.0000209526.58614.92, PubMed 16670646

Johnson E, Enden T, Noreng HJ, Holck-Steen A, Gjerlaug BE, Morken T, Johannessen HO, Drolsum A (2006)
Survival and complications after insertion of self-expandable metal stents for malignant oesophageal stenosis
Scand J Gastroenterol, 41 (3), 252-6
DOI 10.1080/00365520500206350, PubMed 16497610

Landsend E, Johnson E, Johannessen HO, Carlsen E (2006)
Long-term outcome after intestinal resection for Crohn's disease
Scand J Gastroenterol, 41 (10), 1204-8
DOI 10.1080/00365520600731018, PubMed 16990206

Skjelbred CF, Saebø M, Wallin H, Nexø BA, Hagen PC, Lothe IM, Aase S, Johnson E, Hansteen IL, Vogel U, Kure EH (2006)
Polymorphisms of the XRCC1, XRCC3 and XPD genes and risk of colorectal adenoma and carcinoma, in a Norwegian cohort: a case control study
BMC Cancer, 6, 67
DOI 10.1186/1471-2407-6-67, PubMed 16542436

Publications 2005

Bernardshaw S, Hetland G, Ellertsen LK, Tryggestad AM, Johnson E (2005)
An extract of the medicinal mushroom Agaricus blazei Murill differentially stimulates production of pro-inflammatory cytokines in human monocytes and human vein endothelial cells in vitro
Inflammation, 29 (4-6), 147-53
DOI 10.1007/s10753-006-9010-2, PubMed 17091395

Hansen R, Saebø M, Skjelbred CF, Nexø BA, Hagen PC, Bock G, Bowitz Lothe IM, Johnson E, Aase S, Hansteen IL, Vogel U, Kure EH (2005)
GPX Pro198Leu and OGG1 Ser326Cys polymorphisms and risk of development of colorectal adenomas and colorectal cancer
Cancer Lett, 229 (1), 85-91
DOI 10.1016/j.canlet.2005.04.019, PubMed 15946795

Johnson E, Gjerlaug BE, Holck-Steen A, Johannessen HO, Carlsen E, Enden T, Noreng HJ, Drolsum A (2005)
[Surgery and stenting for oesophageal cancer]
Tidsskr Nor Laegeforen, 125 (3), 286-8
PubMed 15702148

Mjåland O, Bakken IJ, Skjeldestad FE, Johnson E (2005)
[Inguinal and femoral hernia repair in Norway 1990-2003]
Tidsskr Nor Laegeforen, 125 (10), 1338-40
PubMed 15909007

Publications 2004

Andersen GØ, Johnson E, Grønset K, Jacobsen D (2004)
[A 25-year old woman with abdominal pain and respiratory failure]
Tidsskr Nor Laegeforen, 124 (19), 2495-7
PubMed 15493066

Bakken IJ, Skjeldestad FE, Mjåland O, Johnson E (2004)
[Cholecystectomy in Norway 1990-2002]
Tidsskr Nor Laegeforen, 124 (18), 2376-8
PubMed 15467805

Johannessen HO, Johnson E, Clausen T, Mjåland O (2004)
[Pain and rehabilitation after inguinal hernia repair in adult male patients]
Tidsskr Nor Laegeforen, 124 (15), 1916-8
PubMed 15306858

Johnson E, Carlsen E, Mjåland O, Drolsum A (2004)
[Internal rectal invagination treated with rectopexy and sigmoid resection]
Tidsskr Nor Laegeforen, 124 (5), 632-3
PubMed 15004606

Olafsson S, Johnson E (2004)
[An alcohol addict with chronic obstructive lung disease and hematemesis]
Tidsskr Nor Laegeforen, 124 (9), 1243-4
PubMed 15181896

Publications 2003

Bakken IJ, Skjeldestad FE, Mjåland O, Johnson E (2003)
[Appendicitis and appendectomy in Norway 1990-2001]
Tidsskr Nor Laegeforen, 123 (22), 3185-8
PubMed 14714004

Johnson E, Carlsen E, Mjåland O, Drolsum A (2003)
Resection rectopexy for internal rectal intussusception reduces constipation and incomplete evacuation of stool
Eur J Surg Suppl (588), 51-6
PubMed 15200044

Johnson E, Carlsen E, Mjåland O, Stien R (2003)
[Secondary anterior sphincteroplasty for anal incontinence after delivery]
Tidsskr Nor Laegeforen, 123 (17), 2443-4
PubMed 14562775

Landsend E, Johnson E, Johannessen HO, Carlsen E (2003)
[Surgical treatment of anal fissure]
Tidsskr Nor Laegeforen, 123 (23), 3366-7
PubMed 14713969

Langeggen H, Namork E, Johnson E, Hetland G (2003)
HUVEC take up opsonized zymosan particles and secrete cytokines IL-6 and IL-8 in vitro
FEMS Immunol Med Microbiol, 36 (1-2), 55-61
DOI 10.1016/S0928-8244(03)00033-6, PubMed 12727366

Olsen I, Wiker HG, Johnson E, Langeggen H, Reitan LJ (2003)
Elevated antibody responses in patients with Crohn's disease against MPP14, a 14 kDa secreted protein purified from Mycobacterium avium subsp. paratuberculosis
Acta Vet Scand, 44 (3-4), 287
PubMed 15074652

Publications 2002

Langeggen H, Berge KE, Johnson E, Hetland G (2002)
Human umbilical vein endothelial cells express complement receptor 1 (CD35) and complement receptor 4 (CD11c/CD18) in vitro
Inflammation, 26 (3), 103-10
DOI 10.1023/a:1015585530204, PubMed 12083416

Mjåland O, Johnson E, Myrvold HE (2002)
[Laparoscopic surgery in Norway]
Tidsskr Nor Laegeforen, 122 (26), 2520-3
PubMed 12522875