[Quality management in the field of gastroenterology - Proposals of the Quality Commission of the German Society of Gastroenterology, Digestive and Metabolic Diseases (DGVS) for Outpatient and Inpatient Quality Assurance]. / Qualität in der Gastroenterologie ­ "Vorschläge der Kommission Qualität der Deutschen Gesellschaft für Gastroenterologie, Verdauungs- und Stoffwechselkrankheiten zur ambulanten und stationären Qualitätssicherung".

The quality of the medical care depends on numerous factors that can often be influenced by the doctor itself. It is a great challenge to follow the constant scientific progress in practice. Scientific standards in gastroenterology are defined in DGVS guidelines and regularly revised. The implementation of evidence-based recommendations in practice remains challenging. On the basis of the DGVS guidelines, the Quality Commission has therefore developed a selection of quality indicators with particular relevance using standardized criteria, the broad implementation of which could contribute to improved patient care in gastroenterology.

["Choosing wisely" - mission and aims]. / Was wollen wir mit "Klug entscheiden" erreichen?

"Klug entscheiden" addresses the problem of over- and undersupply in medicine. Following the American model "Choosing wisely" an interdisciplinary team of all internal medicine societies develops evidence-based recommendations to improve the quality of indications. In contrast to guidelines, the initiative does not provide comprehensive medical recommendations, but focuses on problems that are particularly relevant to health care. In addition, it is intended to promote communication between doctors and patients, but also the national debate on the responsible and sensible use of medical resources.

[Updated S2k-Guideline "Complications of liver cirrhosis". German Society of Gastroenterology (DGVS)]. / Aktualisierte S2k-Leitlinie der Deutschen Gesellschaft für Gastroenterologie, Verdauungs- und Stoffwechselkrankheiten (DGVS) "Komplikationen der Leberzirrhose".

This guideline provides evidence-based key recommendations for diagnosis and therapy of complications of liver cirrhosis and upgrades the 2011 version. An interdisciplinary team of medical experts and patient support groups developed the guideline following the AWMF recommendations for evidence based consensus guidelines. New chapters concerning diagnosis and therapy of hepatic encephalopathy were added.

Polypropylene mesh implantation for hernia repair causes myeloid cell-driven persistent inflammation.

Polypropylene meshes that are commonly used for inguinal hernia repair may trigger granulomatous foreign body reactions. Here, we show that asymptomatic patients display mesh-associated inflammatory granulomas long after surgery, which are dominated by monocyte-derived macrophages expressing high levels of inflammatory activation markers. In mice, mesh implantation by the onlay technique induced rapid and strong myeloid cell accumulation, without substantial attenuation for up to 90 days. Myeloid cells segregated into distinct macrophage subsets with separate spatial distribution, activation profiles, and functional properties, showing a stable inflammatory phenotype in the tissue surrounding the biomaterial and a mixed, wound-healing phenotype in the surrounding stromal tissue. Protein mass spectrometry confirmed the inflammatory nature of the foreign body reaction, as characterized by cytokines, complement activation, and matrix-modulating factors. Moreover, immunoglobulin deposition increased over time around the implant, arguing for humoral immune responses in association with the cell-driven inflammation. Intravital multiphoton microscopy revealed a high motility and continuous recruitment of myeloid cells, which is partly dependent on the chemokine receptor CCR2. CCR2-dependent macrophages are particular drivers of fibroblast proliferation. Thus, our work functionally characterizes myeloid cell-dependent inflammation following mesh implantation, thereby providing insights into the dynamics and mechanisms of foreign body reactions to implanted biomaterials.

Das Leitlinienprogramm der DGVS 2017.

The DGVS aims to develop high quality clinical guidelines. Version 2 of the guideline program takes up new methodical demands to optimise the development process.

Gentamicin supplemented polyvinylidenfluoride mesh materials enhance tissue integration due to a transcriptionally reduced MMP-2 protein expression.

BACKGROUND: A beneficial effect of gentamicin supplemented mesh material on tissue integration is known. To further elucidate the interaction of collagen and MMP-2 in chronic foreign body reaction and to determine the significance of the MMP-2-specific regulatory element (RE-1) that is known to mediate 80% of the MMP-2 promoter activity, the spatial and temporal transcriptional regulation of the MMP-2 gene was analyzed at the cellular level. METHODS: A PVDF mesh material was surface modified by plasma-induced graft polymerization of acrylic acid (PVDF+PAAc). Three different gentamicin concentrations were bound to the provided active sites of the grafted mesh surfaces (2, 5 and 8 µg/mg). 75 male transgenic MMP-2/LacZ mice harbouring the LacZ reporter gene under control of MMP-2 regulatory sequence -1241/+423, excluding the RE-1 were randomized to five groups. Bilateral of the abdominal midline one of the five different meshes was implanted subcutaneously in each animal. MMP-2 gene transcription (anti-ß-galactosidase staining) and MMP-2 protein expression (anti-MMP-2 staining) were analyzed semiquantitatively by immunohistochemistry 7, 21 and 90 days after mesh implantation. The collagen type I/III ratio was analyzed by cross polarization microscopy to determine the quality of mesh integration. RESULTS: The perifilamentary ß-galactosidase expression as well as the collagen type I/III ratio increased up to the 90th day for all mesh modifications, whereas no significant changes could be observed for MMP-2 protein expression between days 21 and 90. Both the 5 and 8 µg/mg gentamicin group showed significantly reduced levels of ß-galactosidase expression and MMP-2 positive stained cells when compared to the PVDF group on day 7, 21 and 90 respectively (5 µg/mg: p < 0.05 each; 8 µg/mg: p < 0.05 each). Though the type I/III collagen ratio increased over time for all mesh modifications significant differences to the PVDF mesh were only detected for the 8 µg/mg group at all 3 time points (p < 0.05 each). CONCLUSIONS: Our current data indicate that lack of RE-1 is correlated with increased mesh induced MMP-2-gene expression for coated as well as for non-coated mesh materials. Gentamicin coating reduced MMP-2 transcription and protein expression. For the 8 µg/mg group this effect is associated with an increased type I/III collagen ratio. These findings suggest that gentamicin is beneficial for tissue integration after mesh implantation, which possibly is mediated via RE-1.