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  1. Article: Treatment plan improvement by multidisciplinary case conferences for patients with colorectal cancer and synchronous liver metastases.

    Rentsch, Markus / Schiergens, Tobias S

    Hepatobiliary surgery and nutrition

    2018  Volume 7, Issue 2, Page(s) 147–148

    Language English
    Publishing date 2018-04-25
    Publishing country China (Republic : 1949- )
    Document type Editorial ; Comment
    ZDB-ID 2812398-0
    ISSN 2304-389X ; 2304-3881
    ISSN (online) 2304-389X
    ISSN 2304-3881
    DOI 10.21037/hbsn.2018.03.05
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Acute Mesenteric Ischemia.

    Kühn, Florian / Schiergens, Tobias S / Klar, Ernst

    Visceral medicine

    2020  Volume 36, Issue 4, Page(s) 256–262

    Abstract: Background: Despite constant improvements in diagnostic as well as interventional and surgical techniques, acute mesenteric ischemia (AMI) remains a life-threatening emergency with high mortality rates. The time to diagnosis of AMI is the most important ...

    Abstract Background: Despite constant improvements in diagnostic as well as interventional and surgical techniques, acute mesenteric ischemia (AMI) remains a life-threatening emergency with high mortality rates. The time to diagnosis of AMI is the most important predictor of patients' outcome; therefore, prompt diagnosis and intervention are essential to reduce mortality in patients with AMI. The present review was performed to analyze potential risk factors and to help find ways to improve the outcome of patients with AMI.
    Summary: Whereas AMI only applies to approximately 1% of all patients with an "acute abdomen," its incidence is rising up to 10% in patients >70 years of age. The initial clinical stage of AMI is characterized by a sudden onset of strong abdominal pain followed by a painless interval. Depending on the extent of disease, the symptoms of nonocclusive mesenteric ischemia (NOMI) and patients with a venous thrombosis can be very different from those of acute occlusive ischemia. Biphasic contrast-enhanced CT represents the gold standard for the diagnosis of arterial and venous occlusion. In case of a central occlusion of the superior mesenteric artery or signs of peritonitis, immediate surgery should be performed. If major bowel resection becomes necessary, critical residual intestinal length limits must be kept in mind. Endovascular techniques for arterial occlusion have taken on a much greater importance today. For stable patients with NOMI, interventional catheter angiography is recommended because it enables diagnosis and treatment with selective application of vasodilators. Depending on its degree, interventional treatment with a transhepatic catheter lysis should be considered for acute and chronic portal vein thrombosis.
    Key message: The prompt and targeted use of the appropriate diagnostics and interventions appears to be the only way to reduce the persistently high mortality rates for AMI.
    Language English
    Publishing date 2020-08-04
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2850733-2
    ISSN 2297-475X ; 2297-4725
    ISSN (online) 2297-475X
    ISSN 2297-4725
    DOI 10.1159/000508739
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Ursachen und Diagnose der Vorwölbung in der Leiste. Ist das ein Leistenbruch?

    Schiergens, Tobias S

    MMW Fortschritte der Medizin

    2012  Volume 153, Issue 49-50, Page(s) 34–35

    Title translation Diagnosis of inguinal hernia.
    MeSH term(s) Diagnosis, Differential ; Diagnostic Imaging ; Hernia, Inguinal/diagnosis ; Hernia, Inguinal/etiology ; Humans ; Pain/etiology ; Physical Examination
    Language German
    Publishing date 2012-02-03
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1478211-x
    ISSN 1438-3276
    ISSN 1438-3276
    DOI 10.1007/bf03369203
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Experimental postoperative ileus: is Th2 immune response involved?

    Lin, Sisi / Kühn, Florian / Schiergens, Tobias S / Zamyatnin, Andrey A / Isayev, Orkhan / Gasimov, Eldar / Werner, Jens / Li, Yongyu / Bazhin, Alexandr V

    International journal of medical sciences

    2021  Volume 18, Issue 13, Page(s) 3014–3025

    Abstract: Rationale: ...

    Abstract Rationale:
    MeSH term(s) Animals ; Cell Communication/immunology ; Digestive System Surgical Procedures/adverse effects ; Disease Models, Animal ; Female ; Humans ; Ileus/blood ; Ileus/immunology ; MAP Kinase Signaling System/immunology ; Male ; Mast Cells/immunology ; Mast Cells/metabolism ; Mice ; NF-kappa B/metabolism ; Postoperative Complications/blood ; Postoperative Complications/immunology ; Reactive Oxygen Species/metabolism ; Th1 Cells/immunology ; Th2 Cells/immunology ; Th2 Cells/metabolism
    Chemical Substances NF-kappa B ; Reactive Oxygen Species
    Language English
    Publishing date 2021-06-16
    Publishing country Australia
    Document type Journal Article
    ZDB-ID 2151424-0
    ISSN 1449-1907 ; 1449-1907
    ISSN (online) 1449-1907
    ISSN 1449-1907
    DOI 10.7150/ijms.59354
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Targeting the Intestinal Barrier to Prevent Gut-Derived Inflammation and Disease: A Role for Intestinal Alkaline Phosphatase.

    Kühn, Florian / Duan, Ruifeng / Ilmer, Matthias / Wirth, Ulrich / Adiliaghdam, Fatemeh / Schiergens, Tobias S / Andrassy, Joachim / Bazhin, Alexandr V / Werner, Jens

    Visceral medicine

    2021  Volume 37, Issue 5, Page(s) 383–393

    Abstract: Background: Intestinal alkaline phosphatase (IAP) as a tissue-specific isozyme of alkaline phosphatases is predominantly produced by enterocytes in the proximal small intestine. In recent years, an increasing number of pathologies have been identified ... ...

    Abstract Background: Intestinal alkaline phosphatase (IAP) as a tissue-specific isozyme of alkaline phosphatases is predominantly produced by enterocytes in the proximal small intestine. In recent years, an increasing number of pathologies have been identified to be associated with an IAP deficiency, making it very worthwhile to review the various roles, biological functions, and potential therapeutic aspects of IAP.
    Summary: IAP primarily originates and acts in the intestinal tract but affects other organs through specific biological axes related to its fundamental roles such as promoting gut barrier function, dephosphorylation/detoxification of lipopolysaccharides (LPS), and regulation of gut microbiota.
    Key messages: Numerous studies reporting on the different roles and the potential therapeutic value of IAP across species have been published during the last decade. While IAP deficiency is linked to varying degrees of physiological dysfunctions across multiple organ systems, the supplementation of IAP has been proven to be beneficial in several translational and clinical studies. The increasing evidence of the salutary functions of IAP underlines the significance of the naturally occurring brush border enzyme.
    Language English
    Publishing date 2021-04-29
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2850733-2
    ISSN 2297-475X ; 2297-4725
    ISSN (online) 2297-475X
    ISSN 2297-4725
    DOI 10.1159/000515910
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Nelfinavir and Its Active Metabolite M8 Are Partial Agonists and Competitive Antagonists of the Human Pregnane X Receptor.

    Burk, Oliver / Kronenberger, Thales / Keminer, Oliver / Lee, Serene M L / Schiergens, Tobias S / Schwab, Matthias / Windshügel, Björn

    Molecular pharmacology

    2021  Volume 99, Issue 3, Page(s) 184–196

    Abstract: The HIV protease inhibitor nelfinavir is currently being analyzed for repurposing as an anticancer drug for many different cancers because it exerts manifold off-target protein interactions, finally resulting in cancer cell death. Xenosensing pregnane X ... ...

    Abstract The HIV protease inhibitor nelfinavir is currently being analyzed for repurposing as an anticancer drug for many different cancers because it exerts manifold off-target protein interactions, finally resulting in cancer cell death. Xenosensing pregnane X receptor (PXR), which also participates in the control of cancer cell proliferation and apoptosis, was previously shown to be activated by nelfinavir; however, the exact molecular mechanism is still unknown. The present study addresses the effects of nelfinavir and its major and pharmacologically active metabolite nelfinavir hydroxy-
    MeSH term(s) ATP Binding Cassette Transporter, Subfamily B/genetics ; Binding Sites ; Cytochrome P-450 CYP3A/genetics ; Dose-Response Relationship, Drug ; Gene Expression Regulation/drug effects ; Hep G2 Cells ; Hepatocytes/cytology ; Hepatocytes/drug effects ; Hepatocytes/metabolism ; Humans ; Models, Molecular ; Molecular Conformation ; Molecular Docking Simulation ; Nelfinavir/analogs & derivatives ; Nelfinavir/chemistry ; Nelfinavir/pharmacology ; Pregnane X Receptor/agonists ; Pregnane X Receptor/antagonists & inhibitors ; Pregnane X Receptor/chemistry ; Pregnane X Receptor/metabolism ; Primary Cell Culture
    Chemical Substances ABCB1 protein, human ; ATP Binding Cassette Transporter, Subfamily B ; NR1I2 protein, human ; Pregnane X Receptor ; hydroxy-t-butylamidenelfinavir ; Cytochrome P-450 CYP3A (EC 1.14.14.1) ; CYP3A4 protein, human (EC 1.14.14.55) ; Nelfinavir (HO3OGH5D7I)
    Language English
    Publishing date 2021-01-22
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 124034-1
    ISSN 1521-0111 ; 0026-895X
    ISSN (online) 1521-0111
    ISSN 0026-895X
    DOI 10.1124/molpharm.120.000116
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Endoscopic Vacuum Therapy for Left-Sided Colorectal Anastomotic Leak Without Fecal Diversion.

    Kühn, Florian / Hasenhütl, Sandro Michael / Hofmann, Felix O / Wirth, Ulrich / Drefs, Moritz / Werner, Jens / Schiergens, Tobias S

    Diseases of the colon and rectum

    2021  Volume 65, Issue 3, Page(s) 421–428

    Abstract: Background: Endoscopic vacuum therapy for the treatment of rectal anastomotic leak has been shown to be effective and safe. The majority of patients are treated after fecal diversion to avoid further septic complications.: Objective: To report the ... ...

    Abstract Background: Endoscopic vacuum therapy for the treatment of rectal anastomotic leak has been shown to be effective and safe. The majority of patients are treated after fecal diversion to avoid further septic complications.
    Objective: To report the effectiveness of endoscopic vacuum therapy for rectal anastomotic leak without diversion compared to secondary stoma creation.
    Design: Retrospective cohort analysis.
    Settings: University hospital, single-center.
    Patients: Patients undergoing sigmoid or rectal resection without fecal diversion during primary surgery who were treated with endoscopic vacuum therapy for clinically relevant anastomotic leak.
    Main outcome measures: Treatment success (sepsis control, granulation and closure of the leak cavity, and no subsequent interventional or surgical procedure required); treatment duration; complications associated with endoscopic vacuum therapy; outpatient treatment; and restoration of intestinal continuity in diverted patients.
    Results: Fifty-seven patients were included. In 20 patients (35%), endoscopic vacuum therapy was initiated without secondary diversion since the leak was extraperitoneal, and the sponge could be placed into the leak cavity with an adequate seal toward the lumen. In 18 patients (90%), this approach was successful. None of these patients required subsequent diversion in the further course of their disease. In two patients, secondary diversion was necessary due to treatment failure. Balloon dilatation for luminal stenosis was required in two patients. When comparing patient and treatment characteristics of patients with and without a stoma, including treatment success and duration, no significant differences were found. Restoration of intestinal continuity was achieved in 69% of diverted patients.
    Limitations: Unrandomized, retrospective study design; confounding factors of treatment assignment; low patient numbers and short follow-up of diverted patients; and low statistical power.
    Conclusion: In this single-institution study, endoscopic vacuum therapy for rectal anastomotic leak was successful in 90% of patients without diversion with regard to sepsis control, granulation of the leak cavity, avoidance of surgery, and long-term stoma-free survival. See Video Abstract at http://links.lww.com/DCR/B737.TERAPIA ENDOSCÓPICA POR ASPIRACIÓN AL VACÍO EN CASOS DE FUGA ANASTOMÓTICA RECTO-CÓLICA IZQUIERDA SIN OSTOMÍA DE PROTECCIÓNANTECEDENTES:Se ha demostrado que la terapia endoscópica por aspiración al vacío en casos de fuga anastomótica recto-cólica izquierda en el tratamiento de la fuga anastomótica rectal es eficaz y segura. La mayoría de los casos beneficiaron del tratamiento después de la confeción de un ostomía de protección para evitar más complicaciones sépticas.OBJETIVO:Demostrar la efectividad de la terapia endoscópica por aspiración al vacío en casos de fuga anastomótica recto-cólica izquierda sin ostomía de protección comparada con los casos que tuvieron la creación de una ostomía secundaria.DISEÑO:Análisis de cohortes de tipo retrospectivo.AJUSTE:Hospital universitario, unicéntrico.PACIENTES:Aquellos pacientes sometidos a una resección sigmoidea o rectal sin ostomía de protección durante una cirugía primaria, y que fueron tratados con terapia endoscópica por aspiración al vacío en caso de fuga anastomótica clínicamente relevante.PRINCIPALES MEDIDAS DE RESULTADO:Tratamiento exitoso (control de la sepsis, granulación y cierre de la cavidad de la fuga, sin requerir procedimiento quirúrgico o intervención ulteterior); duración del tratamiento; complicaciones asociadas con la terapia endoscópica por aspiración al vacío; tratamiento ambulatorio; restablecimiento de la continuidad intestinal en los pacientes portadores de ostomía.RESULTADOS:Se incluyeron 57 pacientes. En 20 pacientes (35%), se inició la terapia endoscópica por aspiración al vacío sin derivación secundaria, ya que la fuga era extraperitoneal y la esponja podía colocarse en la cavidad de la fuga con un sellado adecuado hacia el lumen. En 18 pacientes (90%), este enfoque fue exitoso. Ninguno de estos pacientes requirió una derivación posterior durante la evolución de la enfermedad. En dos pacientes, fue necesaria una derivación secundaria debido al fracaso del tratamiento. Se requirió dilatación con balón por estenosis luminal en dos pacientes. Al comparar las características de los pacientes y del tratamiento con y sin ostomía, incluido el éxito y la duración del tratamiento, no se encontraron diferencias significativas. El restablecimiento de la continuidad intestinal se logró en el 69% de los pacientes derivados.LIMITACIONES:Diseño de estudio retrospectivo no aleatorio; factores de confusión en la asignación del tratamiento; escaso número de pacientes y seguimiento a corto plazo de los pacientes ostomizados; bajo poder estadístico.CONCLUSIÓN:En este estudio de una sola institución, la terapia al vacío por vía endoscópica en casos de fuga anastomótica rectal fue exitosa en el 90% de los pacientes sin derivación con respecto al control de la sepsis, granulación de la cavidad de la fuga, como se evitó la cirugía y la sobrevida sin ostomía a largo plazo. Consulte Video Resumen en http://links.lww.com/DCR/B737. (Traducción-Dr. Xavier Delgadillo).
    MeSH term(s) Anastomotic Leak/etiology ; Anastomotic Leak/physiopathology ; Anastomotic Leak/surgery ; Anastomotic Leak/therapy ; Endoscopy, Digestive System/instrumentation ; Endoscopy, Digestive System/methods ; Female ; Humans ; Male ; Middle Aged ; Negative-Pressure Wound Therapy/instrumentation ; Negative-Pressure Wound Therapy/methods ; Patient Selection ; Proctocolectomy, Restorative/adverse effects ; Proctocolectomy, Restorative/methods ; Rectal Diseases/surgery ; Reoperation/statistics & numerical data ; Retrospective Studies ; Sigmoid Diseases/surgery ; Treatment Outcome
    Language English
    Publishing date 2021-11-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 212581-x
    ISSN 1530-0358 ; 0012-3706
    ISSN (online) 1530-0358
    ISSN 0012-3706
    DOI 10.1097/DCR.0000000000001959
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Chirurgie im hohen Lebensalter

    Schiergens, Tobias S. / Kleespies, Axel / Renz, Bernhard W.

    Intensivmedizin up2date

    2018  Volume 14, Issue 04, Page(s) 451–467

    Keywords Alterschirurgie ; Alterstraumatologie ; geriatrische Traumatologie ; geriatrische Chirurgie
    Language German
    Publishing date 2018-11-01
    Publisher Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 2180698-6
    ISSN 1614-6697 ; 1614-4856
    ISSN (online) 1614-6697
    ISSN 1614-4856
    DOI 10.1055/s-0043-120423
    Database Thieme publisher's database

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  9. Article ; Online: It is not NOD2 - genetic and clinical risk factors for postoperative complications following ileocolic resection in Crohn's disease.

    Schardey, Josefine / Zehl, Sophie / Kappenberger, Alina S / Zimmermann, Petra / Beigel, Florian / Schiergens, Tobias S / Kasparek, Michael S / Kühn, Florian / Werner, Jens / Wirth, Ulrich

    International journal of colorectal disease

    2022  Volume 37, Issue 8, Page(s) 1901–1908

    Abstract: Purpose: To evaluate the role of the nucleotide oligomerization domain 2 (NOD2) mutation status and other risk factors for the incidence of postoperative complications after ileocolic resection for Crohn's disease (CD).: Methods: Data of 138 patients ...

    Abstract Purpose: To evaluate the role of the nucleotide oligomerization domain 2 (NOD2) mutation status and other risk factors for the incidence of postoperative complications after ileocolic resection for Crohn's disease (CD).
    Methods: Data of 138 patients consecutively undergoing ileocolic resection for CD at a tertiary academic referral center were retrospectively analyzed including single nucleotide polymorphism (SNP) data of the NOD2 gene. Uni- and multivariate regression analysis was performed to identify factors associated with increased risk of severe postoperative complications.
    Results: From 114 patients (83%), the NOD2 mutation status was available. Of these, 60 (53%) had a NOD2 wildtype, whereas eleven (10%) were homozygous for the high risk p.Leu1007fsX1008 (rs2066847) variant. Major postoperative complications occurred in 28 patients (20%). Twenty-seven of these (96%) were intraabdominal septic complications such as anastomotic leakage or abscess. Male gender (P = 0.029; OR 3.052, the duration of CD (time [months] from initial diagnosis of CD to surgery; P = 0.001; OR 1.009), previous abdominal surgery for CD (P = 0.017; OR 3.49), and the presence of enteric fistulas (P = 0.023; OR 3.21) were identified as independent risk factors for major postoperative complications. Homozygosity for the NOD2 high-risk variant p.Leu1007fsX1008 did not show increased postoperative morbidity in the short and long-term outcome.
    Conclusions: We could detect independent risk factors for major postoperative complications after ileocolic resection for Crohn's disease. However, patients with the high-risk variant p.Leu1007fsX1008 of the NOD2 gene did not show increased postoperative morbidity.
    MeSH term(s) Crohn Disease/complications ; Crohn Disease/genetics ; Crohn Disease/surgery ; Humans ; Male ; Nod2 Signaling Adaptor Protein/genetics ; Nucleotides ; Postoperative Complications/genetics ; Retrospective Studies ; Risk Factors
    Chemical Substances Nod2 Signaling Adaptor Protein ; Nucleotides
    Language English
    Publishing date 2022-08-01
    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/s00384-022-04223-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Establishment of an Endoscopy-Guided Minimally Invasive Orthotopic Mouse Model of Colorectal Cancer.

    Chen, Chen / Neumann, Jens / Kühn, Florian / Lee, Serene M L / Drefs, Moritz / Andrassy, Joachim / Werner, Jens / Bazhin, Alexandr V / Schiergens, Tobias S

    Cancers

    2020  Volume 12, Issue 10

    Abstract: Open orthotopic mouse models of colorectal cancer have disadvantages such as the requirement for advanced surgical skills or the trauma caused by laparotomy. To overcome these drawbacks, this study aimed to evaluate the establishment of a minimally ... ...

    Abstract Open orthotopic mouse models of colorectal cancer have disadvantages such as the requirement for advanced surgical skills or the trauma caused by laparotomy. To overcome these drawbacks, this study aimed to evaluate the establishment of a minimally invasive model using murine colonoscopy. CT26 and MC38 CRC cells of different concentrations were injected into BALB/C and C57BL/6J mice, respectively. Follow-up endoscopies were performed to assign an endoscopic score to tumor growth. Gross autopsy, histologic and immuno-histochemical evaluation, and immune scoring were performed. To describe the learning curve of the procedures, a performance score was given. Local tumor growth with colorectal wall infiltration, luminal ulceration, the presence of tumor-infiltrating lymphocytes, lympho-vascular invasion, and early spontaneous lymph node, peritoneal, and hepatic metastases were observed. The tumors showed cytoplasmic immuno-staining for CK20. Compared to the MC38/C57BL/6J model, tumorigenicity and immunogenicity of the CT26/BALB/C model were higher. Tumor volume correlated with the endoscopic score. This endoscopy-guided orthotopic mouse model is easy to learn and quick to establish. It features early metastasis and enables the study of interactions with the immune system. When specific cell concentrations and cell lines are applied, controlled local tumor growth and metastasis can be achieved within short observation periods.
    Language English
    Publishing date 2020-10-16
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527080-1
    ISSN 2072-6694
    ISSN 2072-6694
    DOI 10.3390/cancers12103007
    Database MEDical Literature Analysis and Retrieval System OnLINE

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