Pia Oksanen

ORCID: 0000-0003-3480-4819
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About
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Research Areas
  • Inflammatory Bowel Disease
  • Microscopic Colitis
  • Eosinophilic Esophagitis
  • Diagnosis and treatment of tuberculosis
  • Celiac Disease Research and Management
  • Autoimmune and Inflammatory Disorders
  • Pregnancy and Medication Impact
  • Tuberculosis Research and Epidemiology
  • Liver Diseases and Immunity
  • Diverticular Disease and Complications
  • Travel-related health issues
  • Biosimilars and Bioanalytical Methods
  • Mycobacterium research and diagnosis
  • Salmonella and Campylobacter epidemiology
  • Biotin and Related Studies
  • Gastrointestinal motility and disorders
  • Hepatitis Viruses Studies and Epidemiology
  • Renal Diseases and Glomerulopathies
  • Pelvic floor disorders treatments
  • Autoimmune Bullous Skin Diseases
  • Engineering Technology and Methodologies
  • Pharmaceutical Economics and Policy
  • Systemic Lupus Erythematosus Research
  • Health Systems, Economic Evaluations, Quality of Life
  • Muscle activation and electromyography studies

Tampere University
2017-2025

Tampere University Hospital
2017-2025

Finnair (Finland)
1991

University of Jyväskylä
1990

The Epi-IBD cohort is a prospective population-based inception of unselected patients with inflammatory bowel disease from 29 European centres covering background population almost 10 million people. aim this study was to assess the 5-year outcome and course Crohn's (CD).Patients were followed up prospectively time diagnosis, including collection their clinical data, demographics, activity, medical therapy, surgery, cancers deaths. Associations between outcomes multiple covariates analysed...

10.1136/gutjnl-2017-315568 article EN Gut 2018-01-23

Few population-based cohort studies have assessed the disease course of ulcerative colitis [UC] in era biological therapy and widespread use immunomodulators. The aim this study was to assess 5-year outcome patients with UC Epi-IBD cohort.In a prospective, inception unselected UC, were followed up from time their diagnosis, which included collection clinical data, demographics, activity, medical therapy, rates surgery, cancers, deaths. Associations between outcomes multiple covariates...

10.1093/ecco-jcc/jjy154 article EN Journal of Crohn s and Colitis 2018-10-02
Johan Burisch Hillel Vardi Doron Schwartz Michael Friger Gediminas Kiudelis and 85 more Juozas Kupčinskas Mathurin Fuméry Corinne Gower–Rousseau Péter L. Lakatos Péter L. Lakatos R. D’Incà Alessandro Sartini Daniela Valpiani M. Giannotta Naila Arebi Dana Duricova Martin Bortlík Stefania Chetcuti Zammit Pierre Ellul Natalia Pedersen Jens Kjeldsen Jóngerð Midjord Kári Rubek Nielsen Karina Winther Andersen Vibeke Andersen Konstantinos H. Katsanos Dimitrios Christodoulou Viktor Domislović Željko Krznarić Shaji Sebastian Pia Oksanen Pekka Collin Luísa Leite Barros Fernando Magro Riina Salupere Hendrika Adriana Linda Kievit Adrian Goldiș Ioannis Kaimakliotis Jens F Dahlerup Carl Eriksson Jonas Halfvarson Alberto Fernández Vicent Hernandez Svetlana Turcan Elena Belousova Ebbe Langholz Pia Munkholm Selwyn Odes Nikša Turk Silvija Čuković‐Čavka Anastasia Nicolaou Milan Lukáš Olga Shonová Birgitte Blichfeldt Dorte Marker Katrine Carlsen Petra Weimers Clays Aalykke Karen Kudsk Ida Vind Niels Thorsgaard Alexandros Skamnelos Dimitrios Politis Zsuzsanna Végh Peterne Demenyi Szabina Nemethne Kramli Giualia Dal Piaz A. Santini Giulia Girardin Limas Kupčinskas Laimas Jonaitis Irena Valantienė Romanas Zykus Rūta Kučinskienė Daniela Lazăr Inna Nikulina Luisa de Castro Juan-Ramon Pineda Santos Pereira J Martínez-Cadilla L Sanromán Montserrat Figueira D. Martínez Ares J I Rodríguez-Prada Amalia Carmona Carlos González-Portela Ulla-Britt Widen Sally Myers Katherine M. Ashton Emma Whitehead

10.1016/s2468-1253(20)30012-1 article EN ˜The œLancet. Gastroenterology & hepatology 2020-02-13

The incidence of inflammatory bowel disease [IBD] is stabilising in many Western countries. Some still show increasing incidence. Our objective was to determine the latest trends IBD and prevalence Finland compare these among different age groups between geographical areas.We used nationwide registry Social Insurance Institute identify new cases during period 2000-2020. Crude, age-specific, age-standardised rates were calculated. Prevalence estimated using valid reimbursements from same...

10.1093/ecco-jcc/jjac177 article EN Journal of Crohn s and Colitis 2022-11-18

The etiology of travelers' diarrhea was studied in 579 adult Finnish tourists participating two packaged tours to Morocco the winter (n = 233) and fall 346) 1989. A research team accompanied travelers, a laboratory for enteric pathogens established Agadir. At least one pathogen found 62% 60 cases 58% 111 fall. Multiple were less often (8%) than (21%, P < .05). Campylobacter strains leading cause winter, alone or with other 28% (but only 7% fall), whereas enterotoxigenic Escherichia coli...

10.1093/infdis/165.2.385 article EN The Journal of Infectious Diseases 1992-02-01
Johan Burisch Zsuzsanna Végh K. Katsanos Dimitrios Christodoulou Daniela Lazăr and 95 more Adrian Goldis Colm O’Morain Alberto Fernández Santos Pereira Sally Myers Shaji Sebastian Natalia Pedersen Jóngerð Olse Kári Rubek Nielsen Doron Schwartz Selwyn Odes Sven Almér Jonas Halfvarson Nikša Turk S. Čuković-Čavka Inna Nikulina E. А. Belousova Dana Ďuricová Martin Bortlík Olga Shonová Riina Salupere Louisa Barros Fernando Magro Laimas Virginijus Jonaitis Limas Kupčinskas Svetlana Turcan Ioannis Kaimakliotis Karin Ladefoged Karen Kudsk Vibeke Andersen Ida Vind Niels Thorsgaard Pia Oksanen Pekka Collin Giulia Dal Piaz A. Santini Ola Niewiadomski Sally Bell Björn Moum Naila Arebi Jens Kjeldsen Katrine Carlsen Ebbe Langholz Péter L. Lakatos Pia Munkholm Lars Ulrik Gerdes Jens Frederik Dahlerup Ola Niewiadomski Sally Bell Nikša Turk Silvija Čuković‐Čavka Ioannis Kaimakliotis Anastasia Nicolaou Dana Ďuricová Milan Lukáš Martin Bortlík Olga Shonová Johan Burisch Pia Munkholm Ebbe Langholz Birgitte Blichfeldt Dorte Marker Katrine Carlsen Petra Weimers Natalia Pedersen Jens Kjeldsen Clays Aalykke Jens Frederik Dahlerup Karen Kudsk Vibeke Andersen Ida Vind Niels Thorsgaard Riina Salupere Jóngerð Olsen Kári Rubek Nielsen Pia Oksanen Pekka Collin K. Katsanos Dimitrios Christodoulou Alexandros Skamnelos Dimitrios Politis Karin Ladefoged Péter L. Lakatos Zsuzsanna Végh Péter L. Lakatos Peterne Demenyi Szabina Nemethne Kramli Colm O’Morain Giualia Dal Piaz A. Santini Giulia Girardin R. D’Incà Doron Schwartz Selwyn Odes Limas Kupčinskas

Anaemia is an important complication of inflammatory bowel disease [IBD]. The aim this study was to determine the prevalence anaemia and practice screening during first year following diagnosis, in a European prospective population-based inception cohort.Newly diagnosed IBD patients were included followed prospectively for 1 29 one Australian centre. Clinical data including demographics, medical therapy, surgery blood samples collected. defined according World Health Organization criteria.A...

10.1093/ecco-jcc/jjx077 article EN Journal of Crohn s and Colitis 2017-05-25

Serum vitamin D level is commonly low in patients with inflammatory bowel disease (IBD). Although there a growing body of evidence that links to certain aspects IBD such as activity and quality life, data on its prevalence how it varies across phenotype, smoking status treatment groups are still missing.Patients diagnosed between 2010 2011 were recruited. Demographic serum levels collected. Variance was then assessed different groups, life scores.A total 238 (55.9% male) included. Overall,...

10.1097/meg.0000000000001238 article EN European Journal of Gastroenterology & Hepatology 2018-08-21

Dermatitis herpetiformis (DH) is an extraintestinal manifestation of celiac disease causing itchy, blistering rash. Granular IgA deposits in the skin are pathognomonic for DH, and treatment choice a lifelong gluten-free diet (GFD). Preliminary evidence suggests that there patients with DH who redevelop gluten tolerance after adherence to GFD treatment. To evaluate this, we performed 12-month challenge small-bowel mucosal biopsy samples 19 had adhered mean 23 years. Prechallenge was negative...

10.1016/j.jid.2019.03.1150 article EN cc-by-nc-nd Journal of Investigative Dermatology 2019-04-15

The lack of scientific evidence regarding the effectiveness 5-aminosalicylate in patients with Crohn's disease is sharp contrast to its widespread use clinical practice.The aim study was investigate as well course a subgroup who were treated maintenance monotherapy during first year disease.In European community-based inception cohort, 488 followed from time their diagnosis. Information on data, demographics, activity, medical therapy and rates surgery, cancers deaths collected...

10.1177/2050640620945949 article EN other-oa United European Gastroenterology Journal 2020-07-27

Therapy with two concomitant biologicals targeting different inflammatory pathways has emerged as a new therapy option for treatment refractory bowel disease (IBD). Data on the efficacy and safety of dual biological (DBT) are scarce investigated in this study.Data all patients treated combination four Finnish tertiary centres were collected analysed. Remission was assessed by physician basis biomarkers, endoscopic evaluation alleviation symptoms.A total 16 22 trials DBT included. Fifteen had...

10.1080/00365521.2022.2045350 article EN cc-by-nc-nd Scandinavian Journal of Gastroenterology 2022-03-03

Abstract Background The repertoire of biological medication for Crohn’s disease (CD) has expanded in the past two decades. impacts these new therapies on surgery rates are still under investigation. Our aim was to analyse newly diagnosed CD patients era all age groups. Methods Newly were collected from registry Social Insurance Institution Finland and data surgeries Finnish Institute Health Welfare. Patients stratified according diagnosis year availability three groups: 2000-2006 (infliximab...

10.1093/ecco-jcc/jjae190.1356 article EN Journal of Crohn s and Colitis 2025-01-01

Abstract Background The Epi-IBD cohort is a prospective European population-based of 1,508 patients diagnosed in 2010 and 2011 with inflammatory bowel disease (IBD) according to Copenhagen criteria centres across 17 countries. study aims describe treatment strategies, course prognosis IBD unclassified (IBDU) Europe. Methods Patients IBDU were defined as not fulfilling the diagnostic Crohn’s (CD) or ulcerative colitis (UC), but still required related monitoring. They followed prospectively...

10.1093/ecco-jcc/jjae190.1432 article EN Journal of Crohn s and Colitis 2025-01-01

Abstract Background The effect of biological medication on colectomies is still unclear. Our aim was to determine colectomy risk in newly diagnosed Finnish ulcerative colitis (UC) patients and compare the prebiological era. Methods We used registry Social Insurance Institution Finland find UC patients. Data were collected from Institute for Health Welfare. Patients stratified according diagnosis year availability three groups: 2000-2005 (prebiological), 2006-2012 (only infliximab available)...

10.1093/ecco-jcc/jjae190.0050 article EN Journal of Crohn s and Colitis 2025-01-01

Abstract Background and Aims The risk of colectomy in patients with ulcerative colitis (UC) has decreased since the 20th century. Our aim was to determine newly diagnosed Finnish UC compare prebiological biological era. Methods We used registry Social Insurance Institution Finland find colectomies were collected from Institute for Health Welfare. stratified according year diagnosis into three groups: 2000-05 (prebiological), 2006-12 2013-20. Results identified 32,108 2,195 performed on them....

10.1093/ecco-jcc/jjaf081 article EN Journal of Crohn s and Colitis 2025-05-13

The Epi-IBD cohort is a population-based inception of patients with inflammatory bowel disease from 22 European centres. aim was to assess the 10-year course ulcerative colitis (UC) across Europe. Patients were followed prospectively time diagnosis in 2010 and 2011, uniform collection data end 2020. Associations between covariates colectomy, progression extensive hospitalisation analysed separately by multivariable Cox regression analyses propensity score-matched sub-population address...

10.1093/ecco-jcc/jjaf089 article EN PubMed 2025-06-03

A definitive diagnosis of Crohn's disease (CD) or ulcerative colitis (UC) is not always possible, and a proportion patients will be diagnosed as inflammatory bowel unclassified (IBDU). The aim the study was to investigate prognosis initially with IBDU course during following 5 years.The Epi-IBD prospective population-based cohort 1289 IBD in centers across Europe. Clinical data were captured prospectively throughout follow-up period.Overall, 476 (37%) CD, 701 (54%) UC, 112 (9%) IBDU. During...

10.1111/jgh.14563 article EN Journal of Gastroenterology and Hepatology 2018-12-18

There are no good data in the literature on prevalence of inflammatory bowel disease (IBD) patients with kidney and we do not know whether IBD affects course or if type is an influential factor. The aim this study was to evaluate among who have undergone renal biopsies due clinical indications elucidate presence influences patient outcomes.We collected retrospective concomitant diseases, especially IBD, from adult undergoing biopsy for any indication between 2000 2012 at Tampere University...

10.1093/ckj/sfz004 article EN cc-by-nc Clinical Kidney Journal 2019-01-09

Patients undergoing restorative proctocolectomy have often suffered from active ulcerative colitis which should be remembered when assessing quality of life after operation. The aim this study was to explore health-related in those with poor or good pouch function and compare that patients inactive the general population.Altogether, 282 were investigated. control group comprised 408 local register. Generic 15D disease-specific inflammatory bowel disease questionnaire instruments used....

10.1177/1457496918772362 article EN Scandinavian Journal of Surgery 2018-05-18

Background and aims Every fifth patient with ulcerative colitis (UC) experiences severe acute flare at some point in the course of disease. Corticosteroids (Cs) remain treatment choice flare. Data on efficacy first intravenous Cs long-term prognosis UC are scarce were investigated here.Materials methods All episodes patients admitted to Tampere University Hospital treated between January 2007 2016 identified from records reviewed. The risks for colectomy continuous use evaluated. Predictive...

10.1080/00365521.2020.1867892 article EN cc-by-nc-nd Scandinavian Journal of Gastroenterology 2021-01-26

10.1007/bf00236070 article EN European Journal of Applied Physiology and Occupational Physiology 1990-12-01

Background: The EpiCom-cohort is a European prospective population-based cohort of unselected, uniformly diagnosed patients with inflammatory bowel disease (IBD) in 2010 centres from Western and Eastern countries. aims at describing differences occurrence, treatment strategies, course prognosis within Europe. Methods: Patients were followed each 3rd month for the first year after diagnosis then according to treating physician 2–5th follow-up. Clinical data on surgery, hospitalizations...

10.1093/ecco-jcc/jjx002.818 article EN Journal of Crohn s and Colitis 2017-01-26

Background and aims The early outcomes of ulcerative colitis (UC) after rescue therapy with cyclosporine A (CyA) are well known. Published data on the safety this treatment in perioperative use long-term prognosis scarce investigated here.Methods All UC patients treated CyA Tampere University Hospital between 2009 2018 were reviewed from patient records.Results total 182 included median follow-up 3.8 (range 0-13) years. Of all patients, 139 (76%) responded to CyA. quarter responders achieved...

10.1080/00365521.2022.2143727 article EN cc-by-nc-nd Scandinavian Journal of Gastroenterology 2022-11-17

Immunomodulators have both been shown to improve the disease course in IBD patients: however, literature remains inconsistent. The aim of study was investigate impact treatment with immunomodulators and biological therapy on prognosis patients diagnosed Crohn's (CD) from diagnosis during first 5 years follow-up. Epi-IBD cohort is a prospective population-based 1289 unselected, uniformly 2010 centres Western Eastern European countries. Clinical data were captured prospectively throughout...

10.1093/ecco-jcc/jjx180.056 article EN Journal of Crohn s and Colitis 2018-01-16
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