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Risk factors for prolonged postoperative ileus after intracranial tumor surgery

ABSTRACT: Interventions: Long-term postoperative intestinal obstruction group:none;Non-long-term postoperative intestinal obstruction group:none Primary outcome(s): gender;age;body mass index;American Society of Anesthesiology Grade;history of diabetes;duration of operation;the amount of sunfentanil administered intraoperatively;intravenous fluid administration;estimated blood loss;whether transfuse suspended red blood cells;whether flatus within postoperative 24 h;the overall in-hospital length of stay;medical cost Study Design: Cohort study

DISEASE(S): Long-term Postoperative Intestinal Obstruction In Patients Undergoing Surgery For Intracranial Tumors

PROVIDER: 37715 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Gene expression profiling during adhesion formation induced by cecum cauterization

Project description:Abdominal adhesions form in response to peritoneal trauma that can occur during surgery. Postoperative adhesions, which develop in approximately 50-85% of patients who have undergone abdominal surgery, often result in severe complications, including intestinal obstruction, female infertility, chronic pain, and contraindication of surgery for future abdominal illnesses such as cancer. Here, we investigated the cell source of collagen production in postoperative adhesions and explored molecular mechanisms of adhesion using microarray.

2018-12-07 | GSE123413 | GEO

Deep transcriptomics analysis reveals the development of postoperative ileus and the therapeutic effect of electroacupuncture

Project description:Postoperative ileus (POI) often occurs and prolongs hospital stay, which costs expensive. Electroacupuncture (EA), as an appropriate non-pharmacotherapy supported by emerging clinical trials, the mechanism needs to be clarified. In this study, the intestinal manipulation (IM) method was used to establish the POI model, and EA was used to treat it. Sham surgery (SS), simple electrical stimulation (ES), and sham electroacupuncture (SEA) were introduced as control. Gastrointestinal transit and colonic transport were employed to evaluate interventions’ effects. RNA sequencing was then carried out using the intestine tissue of mice.

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A Population of Radio-Resistant Macrophages in the Deep Myenteric Plexus Contributes to Postoperative Ileus Via Toll-Like Receptor 3 Signaling

Project description:Postoperative ileus (POI) is triggered by an innate immune response in the muscularis externa (ME) and is accompanied by bacterial translocation. Bacteria can trigger an innate immune response via toll-like receptor (TLR) activation, but the latter’s contribution to POI has been disproved for several TLRs, including TLR2 and TLR4. Herein we investigated the role of double-stranded RNA detection via TLR3 and TIR-domain-containing adapter inducing interferon-b (TRIF) signaling pathway in POI. POI was induced by small bowel intestinal manipulation in wt, TRIF-/-, TLR3-/-, type I interferon receptor-/- and interferon-b reporter mice, all on C57BL/6 background, and POI severity was quantified by gene expression analysis, gastrointestinal transit, and leukocyte extravasation into the ME. TRIF/ TLR3 deficiency reduced postoperative ME inflammation and prevented POI. With bone marrow transplantation, RNA-sequencing, flow cytometry, and immunohistochemistry we revealed a distinct TLR3-expressing radio-resistant MHCIIhiCX3CR1- IBA-1+ resident macrophage population within the deep myenteric plexus. TLR3 deficiency in these cells, but not in MHCIIhiCX3CR1+ macrophages, reduced cytokine expression in POI. While this might not be an exclusive macrophage-privileged pathway, the TLR3/TRIF axis contributes to proinflammatory cytokine production in MHCIIhiCX3CR1- IBA-1+ macrophages during POI. Deficiency in TLR3/TRIF protects mice from POI. These data suggest that TLR3 antagonism may prevent POI in humans.

2022-02-21 | GSE132147 | GEO

Identification of Transcripts Associated with Renal Damage Due to Ureteral Obstruction as Candidate Urinary Biomarkers

Project description:Renal obstruction is a common cause of renal failure in adults and children and is suspected when hydronephrosis is detected on imaging. Since not all cases of hydronephrosis are associated with renal damage, biomarkers are needed to guide intervention to relieve obstruction. We performed gene expression profiling on the kidneys from adult mice over a detailed time course after obstruction and compared these data to a neonatal model of bilateral high grade obstruction induced by conditional deletion of the calcineurin ß1 (Cnb1) gene. Using a model of short term (non-damaging) and long term (damaging) temporary obstruction, we identified which of the transcripts common to the adult and neonatal models were induced early and associated with renal damage. Using QPCR, elevated levels of several candidate RNA biomarkers of renal damage were detected in urine from obstructed mice and children undergoing surgery for ureteropelvic junction obstruction (UPJO). This SuperSeries is composed of the SubSeries listed below.

2018-02-22 | GSE96571 | GEO

Expression data from primary Glioblastoma in adults

Project description:Gene expression profiling revealed over-representation of a distinct (proneural-like) expression signature in long-term survivors that was linked to IDH1/2 mutation. However, among the IDH1/2-wildtype patients, tumors from long-term survivors did not show distinct gene expression profiles and included proneural, classical and mesenchymal glioblastoma subtypes. We performed genome- and/or transcriptome-wide molecular profiling of primary tumor samples from 70 glioblastoma patients of the German Glioma Network, including 23 longterm survivors with >36 months overall survival (OS), 16 short-term survivors with <12 months OS, and 31 patients with intermediate OS For this study, we screened prospectively recruited patients with a histopathological reference diagnosis of glioblastoma, known KPS at diagnosis, information on extent of resection by early postoperative neuroimaging, available frozen tissue specimens from the initial operation, and documented clinical outcome.

2014-03-27 | E-GEOD-53733 | biostudies-arrayexpress

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Il-1-dependent enteric gliosis guides intestinal inflammation and dysmotility and modulates macrophage function

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Project description:Group 3 innate lymphoid cells (ILC3) are innate immune effectors that contribute to host defense. Whether ILC3 functions are stably modified following pathogen encounter is unknown. Here we assess the impact of a time-restricted enterobacterial challenge to long-term ILC3 activation. We found that intestinal ILC3 persist for months in an activated state following exposure to Citrobacter rodentium. Upon rechallenge, these “trained” ILC3 proliferate, display enhanced interleukin (IL)-22 responses, and have a superior cell-intrinsic capacity to control infection compared to naïve ILC3. Metabolic changes occur in C. rodentium-exposed ILC3 but only trained ILC3 have enhanced proliferative capacity that contributes to elevated IL-22 production. Accordingly, a limited encounter with a pathogen can promote durable phenotypic and functional changes in intestinal ILC3 that contribute to long-term mucosal defense.

2022-01-31 | GSE191167 | GEO

Long-term Expansion of Porcine Intestinal Organoids serves as an Ex Vivo Model for Swine Enteric Coronavirus infection

Project description:We designed a long-term culture system for porcine intestinal organoids from intestinal crypt or single Lgr5+ stem cells by combining previously defined insights in the growth requirements of intestinal epithelium of human and mouse. We showed that long-term cultured swine intestinal organoids were expanded in vitro more than six months at least and maintained the potential to differentiate into different types of cells. These organoids were successfully infected with porcine enteric coronavirus including porcine epidemic diarrhea virus (PEDV) and transmissible gastroenteritis virus (TGEV). RNA-seq analysis showed that robust induction of transcripts associated with antiviral signaling in response to enteric coronavrius infection, including a number of interferon-stimulated genes and cytokines. Moreover, gene set enrichment analysis indicated that PEDV infection could suppress immune response in organoids. This 3D intestinal organoid model offers a long-term, renewable resource for investigating porcine intestinal infections with a variety of pathogens.

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Gene expression after fetal intestinal obstruction on rat model

Project description:In a rat model of induced intestinal obstruction, a transcriptomic analysis was used to measure global gene expression. Rat fetuses small intestines of different stages of development (ED15, ED17, ED19 and ED21, were studied as non-operated controls and compared to upper and lower segments of rat fetuses small intestine with an induced obstruction (ligature at ED18).

2017-10-16 | E-MTAB-5981 | biostudies-arrayexpress

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