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  1. Article ; Online: Novel Insights Into Macrophage Diversity During the Course of Pancreatitis.

    Allawadhi, Prince / Beyer, Georg / Mahajan, Ujjwal M / Mayerle, Julia

    Gastroenterology

    2021  Volume 161, Issue 6, Page(s) 1802–1805

    MeSH term(s) Humans ; Macrophages ; Pancreatitis
    Language English
    Publishing date 2021-09-26
    Publishing country United States
    Document type Editorial ; Research Support, Non-U.S. Gov't ; Comment
    ZDB-ID 80112-4
    ISSN 1528-0012 ; 0016-5085
    ISSN (online) 1528-0012
    ISSN 0016-5085
    DOI 10.1053/j.gastro.2021.09.049
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Reply.

    Beyer, Georg / Mahajan, Ujjwal M / Lerch, Markus M / Mayerle, Julia

    Gastroenterology

    2018  Volume 154, Issue 6, Page(s) 1853–1854

    Language English
    Publishing date 2018
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 80112-4
    ISSN 1528-0012 ; 0016-5085
    ISSN (online) 1528-0012
    ISSN 0016-5085
    DOI 10.1053/j.gastro.2018.03.061
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: The inhibition of YAP Signaling Prevents Chronic Biliary Fibrosis in the Abcb4

    Ye, Liangtao / Ziesch, Andreas / Schneider, Julia S / Ofner, Andrea / Nieß, Hanno / Denk, Gerald / Hohenester, Simon / Mayr, Doris / Mahajan, Ujjwal M / Munker, Stefan / Khaled, Najib Ben / Wimmer, Ralf / Gerbes, Alexander L / Mayerle, Julia / He, Yulong / Geier, Andreas / Toni, Enrico N De / Zhang, Changhua / Reiter, Florian P

    Aging and disease

    2024  Volume 15, Issue 1, Page(s) 338–356

    Abstract: Primary sclerosing cholangitis (PSC) represents a chronic liver disease characterized by poor prognosis and lacking causal treatment options. Yes-associated protein (YAP) functions as a critical mediator of fibrogenesis; however, its therapeutic ... ...

    Abstract Primary sclerosing cholangitis (PSC) represents a chronic liver disease characterized by poor prognosis and lacking causal treatment options. Yes-associated protein (YAP) functions as a critical mediator of fibrogenesis; however, its therapeutic potential in chronic biliary diseases such as PSC remains unestablished. The objective of this study is to elucidate the possible significance of YAP inhibition in biliary fibrosis by examining the pathophysiology of hepatic stellate cells (HSC) and biliary epithelial cells (BEC). Human liver tissue samples from PSC patients were analyzed to assess the expression of YAP/connective tissue growth factor (CTGF) relative to non-fibrotic control samples. The pathophysiological relevance of YAP/CTGF in HSC and BEC was investigated in primary human HSC (phHSC), LX-2, H69, and TFK-1 cell lines through siRNA or pharmacological inhibition utilizing verteporfin (VP) and metformin (MF). The Abcb4
    MeSH term(s) Mice ; Animals ; Humans ; Hepatic Stellate Cells ; Liver Cirrhosis/drug therapy ; Fibrosis ; Cholestasis/metabolism ; Bile Ducts ; Epithelium/metabolism
    Language English
    Publishing date 2024-02-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2625789-0
    ISSN 2152-5250 ; 2152-5250
    ISSN (online) 2152-5250
    ISSN 2152-5250
    DOI 10.14336/AD.2023.0602
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: ROR2 regulates cellular plasticity in pancreatic neoplasia and adenocarcinoma.

    Benitz, Simone / Steep, Alec / Nasser, Malak / Preall, Jonathan / Mahajan, Ujjwal M / McQuithey, Holly / Loveless, Ian / Davis, Erick T / Wen, Hui-Ju / Long, Daniel W / Metzler, Thomas / Zwernik, Samuel / Louw, Michaela / Rempinski, Donald / Salas-Escabillas, Daniel / Brender, Sydney / Song, Linghao / Huang, Ling / Zhang, Zhenyu /
    Steele, Nina G / Regel, Ivonne / Bednar, Filip / Crawford, Howard C

    bioRxiv : the preprint server for biology

    2024  

    Abstract: Cellular plasticity is a hallmark of pancreatic ductal adenocarcinoma (PDAC) starting from the conversion of normal cells into precancerous lesions to the progression of carcinoma subtypes associated with aggressiveness and therapeutic response. We ... ...

    Abstract Cellular plasticity is a hallmark of pancreatic ductal adenocarcinoma (PDAC) starting from the conversion of normal cells into precancerous lesions to the progression of carcinoma subtypes associated with aggressiveness and therapeutic response. We discovered that normal acinar cell differentiation, maintained by the transcription factor Pdx1, suppresses a broad gastric cell identity that is maintained in metaplasia, neoplasia, and the classical subtype of PDAC in mouse and human. We have identified the receptor tyrosine kinase Ror2 as marker of a gastric metaplasia (SPEM)-like identity in the pancreas. Ablation of
    Language English
    Publishing date 2024-01-16
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2023.12.13.571566
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Consensus definition of sludge and microlithiasis as a possible cause of pancreatitis.

    Żorniak, Michal / Sirtl, Simon / Beyer, Georg / Mahajan, Ujjwal Mukund / Bretthauer, Katharina / Schirra, Jörg / Schulz, Christian / Kohlmann, Thomas / Lerch, Markus M / Mayerle, Julia

    Gut

    2023  Volume 72, Issue 10, Page(s) 1919–1926

    Abstract: Objective: In up to 20% of patients, the aetiology of acute pancreatitis (AP) remains elusive and is thus called idiopathic. On more detailed review these cases can often be explained through biliary disease and are amenable to treatment. Findings range ...

    Abstract Objective: In up to 20% of patients, the aetiology of acute pancreatitis (AP) remains elusive and is thus called idiopathic. On more detailed review these cases can often be explained through biliary disease and are amenable to treatment. Findings range from biliary sludge to microlithiasis but their definitions remain fluid and controversial.
    Design: A systematic literature review (1682 reports, following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines) analysed definitions of biliary sludge and microlithiasis, followed by an online international expert survey (30 endoscopic ultrasound/hepatobiliary and pancreatic experts; 36 items) which led to definitions of both. These were consented by Delphi voting and clinically evaluated in a retrospective cohort of patients with presumed biliary pancreatitis.
    Results: In 13% of original articles and 19.2% of reviews, microlithiasis and biliary sludge were used synonymously. In the survey, 41.7% of experts described the term 'sludge' and 'microlithiasis' as identical findings. As a consequence, three definitions were proposed, agreed on and confirmed by voting to distinctly discriminate between biliary sludge (hyperechoic material without acoustic shadowing) and microlithiasis (echorich calculi of ≤5 mm with acoustic shadowing) as opposed to larger biliary stones, both for location in gallbladder and bile ducts. In an initial attempt to investigate the clinical relevance in a retrospective analysis in 177 confirmed cases in our hospital, there was no difference in severity of AP if caused by sludge, microlithiasis or stones.
    Conclusion: We propose a consensus definition for the localisation, ultrasound morphology and diameter of biliary sludge and microlithiasis as distinct entities. Interestingly, severity of biliary AP was not dependent on the size of concrements warranting prospective randomised studies which treatment options are adequate to prevent recurrence.
    MeSH term(s) Humans ; Pancreatitis/complications ; Pancreatitis/diagnostic imaging ; Retrospective Studies ; Prospective Studies ; Acute Disease ; Consensus ; Gallstones/complications
    Language English
    Publishing date 2023-04-18
    Publishing country England
    Document type Systematic Review ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 80128-8
    ISSN 1468-3288 ; 0017-5749
    ISSN (online) 1468-3288
    ISSN 0017-5749
    DOI 10.1136/gutjnl-2022-327955
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Pankreaskarzinom 2018 – reif für personalisierte Therapiekonzepte?

    Simon, Ole / Beyer, Georg / Mahajan, Ujjwal M / Mayerle, Julia

    Deutsche medizinische Wochenschrift (1946)

    2018  Volume 143, Issue 15, Page(s) 1109–1112

    Abstract: In Germany, an estimated 19 000 people will develop pancreatic carcinoma in 2018. The 5-year survival rate of all pancreatic carcinoma patients is very low at around 6 %, and the potentially curative operation is only possible in 15 - 20 % of patients. ... ...

    Title translation Pancreatic Cancer in the Year 2018 - Room for Precision Medicine?
    Abstract In Germany, an estimated 19 000 people will develop pancreatic carcinoma in 2018. The 5-year survival rate of all pancreatic carcinoma patients is very low at around 6 %, and the potentially curative operation is only possible in 15 - 20 % of patients. More frequent use and combination of systemic chemotherapeutic agents has led to improved life expectancy in recent years. In this article we will summarize recent therapeutic strategies depending on tumor status and current approaches to personalized medicine in pancreatic carcinoma.
    MeSH term(s) Antineoplastic Combined Chemotherapy Protocols/adverse effects ; Antineoplastic Combined Chemotherapy Protocols/therapeutic use ; Forecasting ; Germany ; Humans ; Neoplasm Staging ; Pancreatectomy/methods ; Pancreatic Neoplasms/mortality ; Pancreatic Neoplasms/pathology ; Pancreatic Neoplasms/therapy ; Precision Medicine/trends ; Survival Rate ; Treatment Outcome
    Language German
    Publishing date 2018-07-30
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 200446-x
    ISSN 1439-4413 ; 0012-0472
    ISSN (online) 1439-4413
    ISSN 0012-0472
    DOI 10.1055/a-0542-4310
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Impact of tumor size and location on endoscopic ultrasound-guided sampling of pancreatic neuroendocrine tumors: A recursive partitioning analysis.

    Sirtl, Simon / Mahajan, Ujjwal M / Auernhammer, Christoph Josef / Dziadkiewicz, Piotr / Hohmann, Eric / Wójcik, Michał / Kos-Kudła, Beata / Hartleb, Marek / Knösel, Thomas / Schirra, Jörg / Mayerle, Julia / Schulz, Christian / Żorniak, Michał

    Pancreatology : official journal of the International Association of Pancreatology (IAP) ... [et al.

    2022  Volume 22, Issue 5, Page(s) 644–650

    Abstract: Background: Current guidelines provide weak recommendations to treat small (<2 cm) non-functional pancreatic neuroendocrine tumors with low Ki-67 proliferation index either by resection or clinical follow-up. However, there is a lack of consensus ... ...

    Abstract Background: Current guidelines provide weak recommendations to treat small (<2 cm) non-functional pancreatic neuroendocrine tumors with low Ki-67 proliferation index either by resection or clinical follow-up. However, there is a lack of consensus regarding the minimal size of pNET, which allows EUS-guided biopsy with high enough diagnostic accuracy for stratification.
    Methods: We conducted a retrospective, bicentric analysis of patients who had undergone EUS-guided pNET sampling in two tertiary care Endoscopy Units in Germany and Poland. Using a recursive partitioning of the tree-aided model, we aimed to stratify the probability of successful EUS-guided biopsy of pNET lesions according to their size and location.
    Results: In our pNET cohort, successful histological confirmation of a pNET diagnosis was achieved in 59/69 (85.5%) cases at the initial EUS-guided biopsy. In 41 patients with a pNET size less than 18.5 mm, the EUS-guided first biopsy was successful in 90.2%. In 16 of these patients with smaller lesions, EUS-guided sampling was 100% in very small (less than 11 mm) and extremely small lesions (less than 8 mm). The biopsy success rate was 100% in tail lesions in the size range between ≥5.95 and <8.1 mm but only 33.3% independent of the investigator in pancreatic head or body, with an error rate of 11.2% CONCLUSION: Using a recursive partitioning of the tree-aided stratification model, we demonstrate for the first time that in balancing risks and benefits, very small pNETs (<1 cm) in the tail of the pancreas should be sampled under EUS-guidance.
    MeSH term(s) Endoscopic Ultrasound-Guided Fine Needle Aspiration ; Humans ; Neuroectodermal Tumors, Primitive ; Neuroendocrine Tumors/pathology ; Pancreatic Neoplasms/pathology ; Retrospective Studies
    Language English
    Publishing date 2022-05-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2056680-3
    ISSN 1424-3911 ; 1424-3903
    ISSN (online) 1424-3911
    ISSN 1424-3903
    DOI 10.1016/j.pan.2022.04.014
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Pancreatitis severity in mice with impaired CFTR function but pancreatic sufficiency is mediated via ductal and inflammatory cells-Not acinar cells.

    Trapp, Simon / Aghdassi, Ali A / Glaubitz, Juliane / Sendler, Matthias / Weiss, Frank Ulrich / Kühn, Jens Peter / Kromrey, Marie-Luise / Mahajan, Ujjwal M / Pallagi, Petra / Rakonczay, Zoltán / Venglovecz, Viktória / Lerch, Markus M / Hegyi, Peter / Mayerle, Julia

    Journal of cellular and molecular medicine

    2021  Volume 25, Issue 10, Page(s) 4658–4670

    Abstract: Mutations in the cystic fibrosis transmembrane conductance regulator gene (CFTR) are an established risk factor for cystic fibrosis (CF) and chronic pancreatitis. Whereas patients with CF usually develop complete exocrine pancreatic insufficiency, ... ...

    Abstract Mutations in the cystic fibrosis transmembrane conductance regulator gene (CFTR) are an established risk factor for cystic fibrosis (CF) and chronic pancreatitis. Whereas patients with CF usually develop complete exocrine pancreatic insufficiency, pancreatitis patients with CFTR mutations have mostly preserved exocrine pancreatic function. We therefore used a strain of transgenic mice with significant residual CFTR function (CFTR
    MeSH term(s) Acinar Cells/cytology ; Acinar Cells/metabolism ; Animals ; Chlorides/metabolism ; Cystic Fibrosis/complications ; Cystic Fibrosis Transmembrane Conductance Regulator/genetics ; Cystic Fibrosis Transmembrane Conductance Regulator/metabolism ; Humans ; Inflammation/etiology ; Inflammation/metabolism ; Inflammation/pathology ; Male ; Mice ; Mice, Transgenic ; Mutation ; Pancreatic Ducts/metabolism ; Pancreatic Ducts/pathology ; Pancreatitis/etiology ; Pancreatitis/metabolism ; Pancreatitis/pathology ; Severity of Illness Index
    Chemical Substances CFTR protein, human ; Chlorides ; Cystic Fibrosis Transmembrane Conductance Regulator (126880-72-6)
    Language English
    Publishing date 2021-03-08
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2074559-X
    ISSN 1582-4934 ; 1582-4934 ; 1582-1838
    ISSN (online) 1582-4934
    ISSN 1582-4934 ; 1582-1838
    DOI 10.1111/jcmm.16404
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: HLA-DRB1∗16 and -DQB1∗05 alleles are strongly associated with autoimmune pancreatitis in a cohort of hundred patients.

    Goni, Elisabetta / Regel, Ivonne / Mahajan, Ujjwal Mukund / Amodio, Antonio / De Marchi, Giulia / Beyer, Georg / Zuppardo, Raffaella Alessia / Di Leo, Milena / Lanzillotta, Marco / Bonatti, Francesco / Kauke, Teresa / Dick, Andrea / Weiss, Frank Ulrich / Schönermarck, Ulf / Lerch, Markus M / Frulloni, Luca / Cavestro, Giulia Martina / Mayerle, Julia

    Pancreatology : official journal of the International Association of Pancreatology (IAP) ... [et al.

    2022  Volume 22, Issue 4, Page(s) 466–471

    Abstract: Background/objectives: Autoimmune diseases are often associated with human leukocyte antigen (HLA) haplotypes, indicating that changes in major histocompatibility complex (MHC)-dependent self-peptide or antigen presentation contribute to autoimmunity. ... ...

    Abstract Background/objectives: Autoimmune diseases are often associated with human leukocyte antigen (HLA) haplotypes, indicating that changes in major histocompatibility complex (MHC)-dependent self-peptide or antigen presentation contribute to autoimmunity. In our study, we aimed to investigate HLA alleles in a large European cohort of autoimmune pancreatitis (AIP) patients.
    Methods: Hundred patients with AIP, diagnosed and classified according to the International Consensus Diagnostic Criteria (ICDC), were prospectively enrolled in the study. Forty-four patients with chronic pancreatitis (CP) and 254 healthy subjects served as control groups. DNA was isolated from blood samples and two-digit HLA typing was performed with sequence-specific primer (SSP-) PCR. HLA allele association strength to AIP was calculated as odds ratio.
    Results: We uncovered a strong enrichment of HLA-DQB1 homozygosity in type 1 and type 2 AIP patients. Moreover, a significantly increased incidence of the HLA-DRB1∗16 and HLA-DQB1∗05 alleles and a concomitant lack of the HLA-DRB1∗13 allele was detected in AIP type 1 and type 2 patients. In contrast, the HLA-DQB1∗02 allele was underrepresented in the 'not otherwise specified' (NOS) AIP subtype. We detected no significant difference in the HLA-DRB3, HLA-DRB4 and HLA-DRB5 allele frequency in our cohort.
    Conclusions: Although AIP type 1 and type 2 are characterized by distinct histopathological characteristics, both subtypes are associated with the same HLA alleles, indicating that the disease might rely on similar immunogenic mechanisms. However, AIP NOS represented another subclass of AIP.
    MeSH term(s) Alleles ; Autoimmune Pancreatitis ; Gene Frequency ; Genetic Predisposition to Disease ; HLA-DRB1 Chains/genetics ; HLA-DRB4 Chains/genetics ; Haplotypes ; Humans
    Chemical Substances HLA-DRB1 Chains ; HLA-DRB4 Chains
    Language English
    Publishing date 2022-03-21
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2056680-3
    ISSN 1424-3911 ; 1424-3903
    ISSN (online) 1424-3911
    ISSN 1424-3903
    DOI 10.1016/j.pan.2022.03.015
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Pankreaskarzinom 2018 – reif für personalisierte Therapiekonzepte?

    Simon, Ole / Beyer, Georg / Mahajan, Ujjwal M. / Mayerle, Julia

    TumorDiagnostik & Therapie

    2019  Volume 40, Issue 03, Page(s) 180–183

    Abstract: Epidemiologie: Die 5-Jahres-Überlebensrate (5-JÜR) aller Pankreaskarzinompatienten liegt mit rund 6 % sehr niedrig und die potenziell kurative Operation ist nur bei 15 – 20 % der Erkrankten möglich. Durch häufigeren Einsatz und Kombination systemischer ... ...

    Abstract Epidemiologie: Die 5-Jahres-Überlebensrate (5-JÜR) aller Pankreaskarzinompatienten liegt mit rund 6 % sehr niedrig und die potenziell kurative Operation ist nur bei 15 – 20 % der Erkrankten möglich. Durch häufigeren Einsatz und Kombination systemischer Chemotherapeutika konnte in den letzten Jahren eine verbesserte Lebenserwartung erreicht werden.
    Resektables Stadium: Nach vollständiger operativer Resektion eines Pankreaskarzinoms trägt eine adjuvante Chemotherapie zur Verlängerung des Gesamtüberlebens bei. Mittel der Wahl sind Gemcitabin oder 5-Fluorouracil (5-FU) und Folinsäure (FS). Kürzlich konnte für die Kombination aus Gemcitabin und Capecitabin (Gem-Cap) eine signifikante Verlängerung des Gesamtüberlebens im Vergleich zur Gemcitabin-Monotherapie gezeigt werden. Für den Einsatz einer adjuvanten Radiochemotherapie gibt es derzeit keine Empfehlung.
    Borderline-resektables Stadium: Eine neoadjuvante Therapie hat bei Pankreaskarzinomen außerhalb klinischer Studien keinen Stellenwert. Eine Ausnahme stellen borderline-resektable Pankreaskarzinome dar.
    Fortgeschrittenes Stadium (M1): Patienten mit fortgeschrittenem oder metastasiertem Pankreaskarzinom profitieren von einer Chemotherapie. Für Patienten mit gutem ECOG-Status konnte kürzlich in 2 Phase-III-Studien eine signifikante Lebenszeitverlängerung durch die Kombination aus Gemcitabin plus nab-Paclitaxel (Gem-Nab) sowie durch das Kombinationsschema aus Folinsäure, 5-FU, Irinotecan und Oxaliplatin (FOLFIRINOX) gezeigt werden. In der Zweitlinie steht nanoliposomales Irinotecan oder Oxaliplatin kombiniert mit 5FU/FS (OFF) zur Verfügung.
    Personalisierte Therapien: Die molekulare Charakterisierung des Pankreaskarzinoms hat Fortschritte gemacht und bietet schon heute Ansätze zur personalisierten Medizin. Bei gutem ECOG-Status sollte vor Zweitlinientherapie eine MSI-H/dMMR-Analyse erfolgen, um den möglichen Einsatz einer Checkpoint-Inhibitor-Therapie zu evaluieren. Bei BRCA-Mutationen kann die Gabe von PARP-Inhibitoren vielversprechend sein.
    Keywords Bauchspeicheldrüsenkrebs ; personalisierte Medizin ; Chemotherapie/Onkologie ; pancreatic cancer ; personalized medicine ; chemotherapy/oncology
    Language German
    Publishing date 2019-04-01
    Publisher © Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 2072365-9
    ISSN 1439-1279 ; 0722-219X
    ISSN (online) 1439-1279
    ISSN 0722-219X
    DOI 10.1055/a-0870-8867
    Database Thieme publisher's database

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