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  1. Article ; Online: Mucosal microbiome of surgically treated terminal ileal Crohn's disease.

    Loch, Florian N / Kamphues, Carsten / Menzel, Peter / Schwarzer, Rolf / Beyer, Katharina / Schineis, Christian

    Frontiers in cellular and infection microbiology

    2024  Volume 13, Page(s) 1324668

    Abstract: Crohn's disease (CD) is associated with changes in the microbiome. The role of these changes and their precise association with disease course and activity remain ambiguous. In this prospective single-center study, the mucosal microbiome of surgical CD ... ...

    Abstract Crohn's disease (CD) is associated with changes in the microbiome. The role of these changes and their precise association with disease course and activity remain ambiguous. In this prospective single-center study, the mucosal microbiome of surgical CD and non-CD patients was compared at the time of surgery. Microbial analyses were individually performed for ileal and colonic tissue samples obtained during surgery using 16S-rRNA-gene amplicon sequencing. Three groups out of the 46 included patients were formed: 1) a study group of CD of patients who received ileocecal resection due to CD involvement (CD study, n=10); 2) a control group of non-CD of patients who received intestinal resection due to indications other than CD (non-CD control, n=27); and 3) a second control group of CD who underwent resection of the intestine not affected by CD (CD non-affected control, n=9). Species richness and Shannon diversity were not different between all formed groups and regions analyzed (p>0.05). Several significant taxonomic differences were seen at the phylum-, order-, and genus-levels between the formed groups, such as a decrease of
    MeSH term(s) Humans ; Crohn Disease/surgery ; Prospective Studies ; Intestinal Mucosa ; Gastrointestinal Microbiome ; Microbiota
    Language English
    Publishing date 2024-01-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2619676-1
    ISSN 2235-2988 ; 2235-2988
    ISSN (online) 2235-2988
    ISSN 2235-2988
    DOI 10.3389/fcimb.2023.1324668
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Der Stellenwert der Strahlentherapie beim Rektumkarzinom – ein Update aus Sicht des Chirurgen.

    Lauscher, Johannes Christian / Schineis, Christian H W / Weixler, Benjamin / Kreis, Martin E

    Der Chirurg; Zeitschrift fur alle Gebiete der operativen Medizen

    2021  Volume 92, Issue 7, Page(s) 591–598

    Abstract: Background: Neoadjuvant chemoradiotherapy was implemented in the treatment of rectal cancer for UICC stages II and III in 2004. Recent studies have provided new insights with respect to the indications and sequence of radiotherapy in the concept of ... ...

    Title translation The importance of radiotherapy in rectal cancer-an update from a surgeon's perspective.
    Abstract Background: Neoadjuvant chemoradiotherapy was implemented in the treatment of rectal cancer for UICC stages II and III in 2004. Recent studies have provided new insights with respect to the indications and sequence of radiotherapy in the concept of multimodal treatment.
    Objective: The aim of the study was to review the status of radiotherapy in the context of current developments in the treatment of rectal cancer, such as magnetic resonance imaging (MRI)-based surgery, total neoadjuvant therapy and the watch and wait strategy for complete clinical remission.
    Results: The indications for neoadjuvant radiotherapy based on the clinical T and N stages are not exact and can lead to overtreatment in 18-27% of cases. Radiotherapy is associated with a worsening of anorectal and urogenital functions. Local recurrence rates of 3% with surgery alone can be achieved in patients with negative circumferential resection margins (low risk cancer) in MRI. For rectal cancer with high-risk features, such as cT4 tumor, positive circumferential resection margins and extramural vascular invasion, an improved disease-free survival and a lower rate of distant metastases could be achieved with total neoadjuvant therapy compared to standard neoadjuvant chemoradiotherapy in recent phase III randomized trials. Pathological complete remission is achieved in 28% of patients after total neoadjuvant therapy.
    Conclusion: The high rate of complete remission has fired the debate regarding watch and wait after total neoadjuvant therapy; however, no prospective randomized phase III trials comparing total mesorectal resection vs. watch and wait in complete clinical remission have been published. Hence, resection remains the gold standard in this scenario given the excellent long-term oncological results.
    MeSH term(s) Chemoradiotherapy ; Humans ; Neoadjuvant Therapy ; Neoplasm Recurrence, Local ; Rectal Neoplasms/therapy ; Surgeons ; Treatment Outcome ; Watchful Waiting
    Language German
    Publishing date 2021-04-23
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 1521-0
    ISSN 1433-0385 ; 0009-4722
    ISSN (online) 1433-0385
    ISSN 0009-4722
    DOI 10.1007/s00104-021-01414-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: The Immune Checkpoint Landscape in Tumor Cells of Pancreatic Ductal Adenocarcinoma.

    Loch, Florian N / Kamphues, Carsten / Beyer, Katharina / Schineis, Christian / Rayya, Wael / Lauscher, Johannes C / Horst, David / Dragomir, Mihnea P / Schallenberg, Simon

    International journal of molecular sciences

    2023  Volume 24, Issue 3

    Abstract: Immune checkpoint therapy (ICT) has shown promising potential in the treatment of multiple solid tumors. However, the role of ICT in pancreatic ductal adenocarcinoma (PDAC) remains limited. Patterns of immune checkpoints (ICs) in PDAC represent the basis ...

    Abstract Immune checkpoint therapy (ICT) has shown promising potential in the treatment of multiple solid tumors. However, the role of ICT in pancreatic ductal adenocarcinoma (PDAC) remains limited. Patterns of immune checkpoints (ICs) in PDAC represent the basis for establishing a potent ICT. The aim of this study is to create a profile of IC expression and its prognostic relevance in cancer cells of PDAC. Therefore, tumor cells from peripheral and central tissue microarray (TMA) spots from histologically confirmed PDAC of 68 patients after tumor resection were investigated in terms of expressions of TIM3, IDO, B7H4, LAG3, VISTA, and PD-L1 using immunohistochemistry. The presence of the respective ICs was compared to overall survival (OS). The presence of VISTA and PD-L1 significantly correlates with shorter OS (median OS: 22 months vs. 7 months and 22 months vs. 11 months, respectively,
    MeSH term(s) Humans ; B7-H1 Antigen/metabolism ; Hepatitis A Virus Cellular Receptor 2 ; Pancreatic Neoplasms/pathology ; Carcinoma, Pancreatic Ductal/pathology ; Biomarkers, Tumor/metabolism ; Pancreatic Neoplasms
    Chemical Substances B7-H1 Antigen ; Hepatitis A Virus Cellular Receptor 2 ; Biomarkers, Tumor
    Language English
    Publishing date 2023-01-21
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms24032160
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  4. Article: Ex vivo

    Loch, Florian N / Kamphues, Carsten / Beyer, Katharina / Schineis, Christian / Asbach, Patrick / Reiter, Rolf / Sack, Ingolf / Braun, Jürgen

    Quantitative imaging in medicine and surgery

    2023  Volume 13, Issue 5, Page(s) 2895–2906

    Abstract: Background: Conventional magnetic resonance enterography is limited in differentiating active inflammation and fibrosis in lesions of Crohn's disease (CD), thus providing a restricted basis for therapeutic decision making. Magnetic resonance ... ...

    Abstract Background: Conventional magnetic resonance enterography is limited in differentiating active inflammation and fibrosis in lesions of Crohn's disease (CD), thus providing a restricted basis for therapeutic decision making. Magnetic resonance elastography (MRE) is an emerging imaging tool that differentiates soft tissues on the basis of their viscoelastic properties. The aim of this study was to demonstrate the feasibility of MRE in assessing the viscoelastic properties of small bowel samples and quantifying differences in viscoelastic properties between healthy ileum and ileum affected by CD.
    Methods: Twelve patients (median age: 48 years) were prospectively enrolled in this study between September 2019 and January 2021. Patients of the study group (n=7) underwent surgery for terminal ileal CD, while patients of the control group (n=5) underwent segmental resection of healthy ileum. MRE of ileal tissue samples of surgical specimens from both groups was performed in a compact tabletop MRI scanner. Penetration rate (
    Results: Penetration rate a was significantly lower in CD-affected ileum compared to healthy ileum for all vibration frequencies (P<0.05). Consistently, damping ratio
    Conclusions: MRE of surgical small bowel specimens is feasible, allowing determination of viscoelastic properties and reliable quantification of differences in viscoelastic properties between healthy and CD-affected ileum. Thus, the results presented here are an important prerequisite for future studies investigating comprehensive MRE mapping and exact histopathological correlation including characterization and quantification of inflammation and fibrosis in CD.
    Language English
    Publishing date 2023-04-03
    Publishing country China
    Document type Journal Article
    ZDB-ID 2653586-5
    ISSN 2223-4306 ; 2223-4292
    ISSN (online) 2223-4306
    ISSN 2223-4292
    DOI 10.21037/qims-22-1071
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: First successful treatment of

    Bayerl, Christian / Berg, Ann-Kathrin / Angermair, Stefan / Kim, Damon / Hamm, Bernd / Beyer, Katharina / Schineis, Christian

    Frontiers in medicine

    2023  Volume 10, Page(s) 1164466

    Abstract: Emphysematous diseases of the abdomen are rare with an often inconspicuous presentation of symptoms and rapid lethal outcome if untreated. We report the first successfully treated case ... ...

    Abstract Emphysematous diseases of the abdomen are rare with an often inconspicuous presentation of symptoms and rapid lethal outcome if untreated. We report the first successfully treated case of
    Language English
    Publishing date 2023-05-17
    Publishing country Switzerland
    Document type Case Reports
    ZDB-ID 2775999-4
    ISSN 2296-858X
    ISSN 2296-858X
    DOI 10.3389/fmed.2023.1164466
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Influence of the COVID-19 pandemic on the timing of surgical triage, tumor stage, and therapy of patients with colon carcinoma.

    Speichinger, Fiona / Berg, Ann-Kathrin / Stoyanova, Ani / Pozios, Ioannis / Loch, Florian / Lauscher, Johannes C / Beyer, Katharina / Slavova, Nadia / Schineis, Christian

    International journal of colorectal disease

    2023  Volume 38, Issue 1, Page(s) 150

    Abstract: Purpose: With the onset of the COVID pandemic in Germany in March 2020, far-reaching restrictions were imposed that limited medical access for patients. Screening examinations such as colonoscopies were greatly reduced in number. As rapid surgical ... ...

    Abstract Purpose: With the onset of the COVID pandemic in Germany in March 2020, far-reaching restrictions were imposed that limited medical access for patients. Screening examinations such as colonoscopies were greatly reduced in number. As rapid surgical triage after diagnosis is prognostic, our hypothesis was that pandemic-related delays would increase the proportion of advanced colon cancers with an overall sicker patient population.
    Methods: A total of 204 patients with initial diagnosis of colon cancer were analyzed in this retrospective single-center study between 03/01/2018 and 03/01/2022. Control group (111 patients, pre-COVID-19) and the study group (93 patients, during COVID-19) were compared in terms of tumor stages, surgical therapy, complications, and delays in the clinical setting. The data were presented either as absolute numbers or as median for constant data.
    Results: A trend towards more advanced tumor stages (T4a p = 0.067) and a significant increase of emergency surgeries (p = 0.016) with higher rates of ileus and perforation (p = 0.004) as well as discontinuity resections (p = 0.049) during the pandemic could be observed. Delays in surgical triage after endoscopic diagnosis were seen during the 2nd lockdown (02/11/20-26/12/20; p = 0.031).
    Conclusion: In summary, the results suggest delayed treatment during the COVID-19 pandemic, with the infection pattern of COVID appearing to have a major impact on the time between endoscopic diagnosis and surgical triage/surgery. Adequate care of colon cancer patients is possible even during a pandemic, but it is important to focus on structured screening and tight diagnosis to treatment schedules in order to prevent secondary pandemic victims.
    MeSH term(s) Humans ; COVID-19/epidemiology ; Pandemics ; SARS-CoV-2 ; Triage/methods ; Retrospective Studies ; Communicable Disease Control ; Colonic Neoplasms/epidemiology ; Colonic Neoplasms/surgery
    Language English
    Publishing date 2023-05-31
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 84975-3
    ISSN 1432-1262 ; 0179-1958
    ISSN (online) 1432-1262
    ISSN 0179-1958
    DOI 10.1007/s00384-023-04430-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Effektivität von Mukosa Muskel Flaps in der Behandlung von perianalen Fisteln bei Morbus Crohn und kryptoglandulären Fisteln – eine Langzeit-Follow-up-Studie.

    Schineis, Christian / Warschkow, René / Bruder, Leon / Lauscher, Johannes C / Kamphues, Carsten / Kreis, Martin / Weixler, Benjamin

    Zentralblatt fur Chirurgie

    2023  Volume 148, Issue 3, Page(s) 259–266

    Abstract: Aim: Surgical treatment of perianal fistulae originating from Crohn's Disease (CD) or cryptoglandular abscess (CGA) remains a challenge. Data on long-term healing rates are scarce. We aimed to evaluate the long-term success rate of mucosal advancement ... ...

    Title translation Effectiveness of Mucosal Advancement Flaps in Surgery of Perianal Fistulas from Crohn´s Disease and Cryptoglandular Fistulas - a Long-term Follow-up Study.
    Abstract Aim: Surgical treatment of perianal fistulae originating from Crohn's Disease (CD) or cryptoglandular abscess (CGA) remains a challenge. Data on long-term healing rates are scarce. We aimed to evaluate the long-term success rate of mucosal advancement flap (MAF) operations.
    Methods: This single centre retrospective analysis was performed at a tertiary referral centre (Charité University Hospital Berlin, Campus Benjamin Franklin) between March 1, 2010 and March 31, 2020. Patients with complex perianal fistulae originating from CD or CGA treated with MAF were included. Long-time healing rates of MAF in CGA and CD were compared. Regression analysis was used to identify predictive factors for definitive healing.
    Results: 83 patients (24 CD, 59 CGA,) were included. Median follow-up for CD was 5.4 and 1.9 years for CGA. Definitive healing of fistulae was achieved in 19 (79.2%) CD patients (p = 0.682) and in 44 (74.6%) CGA patients. Healing time was significantly shorter in CGA than in CD (9.3 months [standard deviation: SD= 11.3 months] vs. 30.9 months [SD = 23.5 months]; p < 0.001). Treatment with biologicals (hazard ratio: HR = 0.18, 95%-confidence interval: 95%-CI = 0.06-0.59, p = 0.004) and diverting ileostomy (HR = 0.29, 95%-CI = 0.10-0.85, p = 0.023) in CD were independent predictors for MAF success. Simultaneous medication with azathioprine in CD was an independent predictor for MAF failure (HR = 3.20, 95%-CI = 1.05-9.81, p = 0.041).
    Conclusion: This study demonstrates that surgical therapy of perianal fistulae with MAF is successful in about 75% of patients overall. Patients with MC benefit from biologicals and a diverting ileostomy. Treatment with azathioprine had a negative impact on recurrence rates. Repeated MAF operations did not increase the risk of failure in subsequent operations.
    MeSH term(s) Humans ; Crohn Disease/complications ; Crohn Disease/surgery ; Follow-Up Studies ; Treatment Outcome ; Azathioprine/therapeutic use ; Retrospective Studies ; Rectal Fistula/surgery
    Chemical Substances Azathioprine (MRK240IY2L)
    Language German
    Publishing date 2023-03-16
    Publishing country Germany
    Document type English Abstract ; Journal Article
    ZDB-ID 200935-3
    ISSN 1438-9592 ; 0044-409X
    ISSN (online) 1438-9592
    ISSN 0044-409X
    DOI 10.1055/a-2039-2896
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Stepwise Analysis of Resection Margin Impact on Survival and Distant Metastasis in Pancreatic Head Ductal Adenocarcinoma.

    Loch, Florian N / Kamphues, Carsten / Rieger, Freschta / Beyer, Katharina / Rayya, Wael / Schineis, Christian / Klauschen, Frederick / Horst, David / Schallenberg, Simon / Dragomir, Mihnea P

    International journal of surgical pathology

    2024  , Page(s) 10668969241229342

    Abstract: The prognostic role of tumor cells in pancreatic ductal adenocarcinoma (PDAC) of the pancreatic head with direct microscopic infiltration (DMI) or in close proximity (≤1 mm) to the resection margin (RM) remains unclear. This single-center, retrospective ... ...

    Abstract The prognostic role of tumor cells in pancreatic ductal adenocarcinoma (PDAC) of the pancreatic head with direct microscopic infiltration (DMI) or in close proximity (≤1 mm) to the resection margin (RM) remains unclear. This single-center, retrospective study included specimens from 75 patients who underwent oncological resection of pancreatic head PDAC between February 2013 and July 2020. Two pathologists independently re-measured the distance between tumors and the multiple RMs. The impact of RM involvement for DMI, tumor cells within ≤1 mm, in general, and for individual RMs on overall survival (OS) and development of distant pulmonary (PM) and hepatic (HM) metastasis was analyzed. DMI of RMs was significantly associated with a shorter OS (median 5 vs 19 months,
    Language English
    Publishing date 2024-02-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1336393-1
    ISSN 1940-2465 ; 1066-8969
    ISSN (online) 1940-2465
    ISSN 1066-8969
    DOI 10.1177/10668969241229342
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  9. Article ; Online: Role of visceral fat on postoperative complications and relapse in patients with Crohn's disease after ileocecal resection: Is it overrated?

    Schineis, Christian Hans Wolfgang / Pozios, Ioannis / Boubaris, Katharina / Weixler, Benjamin / Kamphues, Carsten / Margonis, Georgios Antonios / Kreis, Martin Ernst / Strobel, Rahel Maria / Beyer, Katharina / Seifarth, Claudia / Luitjens, Jan / Kaufmann, David / Lauscher, Johannes Christian

    International journal of colorectal disease

    2024  Volume 39, Issue 1, Page(s) 20

    Abstract: Introduction: The role of visceral fat in disease development, particularly in Crohn´s disease (CD), is significant. However, its preoperative prognostic value for postoperative complications and CD relapse after ileocecal resection (ICR) remains ... ...

    Abstract Introduction: The role of visceral fat in disease development, particularly in Crohn´s disease (CD), is significant. However, its preoperative prognostic value for postoperative complications and CD relapse after ileocecal resection (ICR) remains unknown. This study aims to assess the predictive potential of preoperatively measured visceral and subcutaneous fat in postoperative complications and CD recurrence using magnetic resonance imaging (MRI). The primary endpoint was postoperative anastomotic leakage of the ileocolonic anastomosis, with secondary endpoints evaluating postoperative complications according to the Clavien Dindo classification and CD recurrence at the anastomosis.
    Methods: We conducted a retrospective analysis of 347 CD patients who underwent ICR at our tertiary referral center between 2010 and 2020. We included 223 patients with high-quality preoperative MRI scans, recording demographics, postoperative outcomes, and CD recurrence rates at the anastomosis. To assess adipose tissue distribution, we measured total fat area (TFA), visceral fat area (VFA), subcutaneous fat area (SFA), and abdominal circumference (AC) at the lumbar 3 (L3) level using MRI cross-sectional images. Ratios of these values were calculated.
    Results: None of the radiological variables showed an association with anastomotic leakage (TFA p = 0.932, VFA p = 0.982, SFA p = 0.951, SFA/TFA p = 0.422, VFA/TFA p = 0.422), postoperative complications, or CD recurrence (TFA p = 0.264, VFA p = 0.916, SFA p = 0.103, SFA/TFA p = 0.059, VFA/TFA p = 0.059).
    Conclusions: Radiological visceral obesity variables were associated with postoperative outcomes or clinical recurrence in CD patients undergoing ICR. Preoperative measurement of visceral fat measurement is not specific for predicting postoperative complications or CD relapse.
    MeSH term(s) Humans ; Crohn Disease/complications ; Crohn Disease/diagnostic imaging ; Crohn Disease/surgery ; Retrospective Studies ; Intra-Abdominal Fat/diagnostic imaging ; Intra-Abdominal Fat/pathology ; Anastomotic Leak/pathology ; Recurrence ; Postoperative Complications/etiology ; Postoperative Complications/pathology
    Language English
    Publishing date 2024-01-19
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 84975-3
    ISSN 1432-1262 ; 0179-1958
    ISSN (online) 1432-1262
    ISSN 0179-1958
    DOI 10.1007/s00384-023-04586-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Robotic-Assisted versus Laparoscopic Surgery for Rectal Cancer: An Analysis of Clinical and Financial Outcomes from a Tertiary Referral Center.

    Gebhardt, Jasper Max / Werner, Neno / Stroux, Andrea / Förster, Frank / Pozios, Ioannis / Seifarth, Claudia / Schineis, Christian / Weixler, Benjamin / Beyer, Katharina / Lauscher, Johannes Christian

    Journal of clinical medicine

    2024  Volume 13, Issue 6

    Abstract: ... ...

    Abstract Background
    Language English
    Publishing date 2024-03-20
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm13061795
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