In many trials and experiments, subjects are not only observed once but multiple times, resulting in a cluster of possibly correlated observations (e.g., brain regions per patient). Observations often do not fulfill model assumptions of mixed models and require the use of nonparametric methods. In this article, we develop and present a purely nonparametric rank-based procedure that flexibly allows the unbiased and consistent estimation of the Wilcoxon-Mann-Whitney effect P(X<Y)+12P(X=Y)$$ P\left(X<Y\right)+\frac{1}{2}P\left(X=Y\right) $$ in clustered data designs. Compared with existing methods, we allow flexible weights to be used in effect estimation. Additionally, we develop global and multiple contrast test procedures to test null hypotheses formulated regarding the generalized Mann-Whitney effects and for the computation of range-preserving simultaneous confidence intervals in a unified way. Extensive simulation studies show that these methods control the type-I error rate well and have reasonable power to detect alternatives in various situations.
Weniger anzeigenThe emergence of hybrid scaffolds, blending biomaterials with diverse properties, offers promise in musculoskeletal tissue engineering. However, a need for in vitro platforms investigating biological behavior and the interplay of different load-bearing and colonizable synthetic bone substitute materials remains. Herein, we present a novel, in-house producible, and scalable clamp culture system designed for facile in vitro analysis of interactions between biomaterials, hydrogels, and cells. The system, constructed here from an exemplary 3D-printable polymer and photopolymerizable hydrogel using a widely available benchtop 3D printer, ensures mechanical stability and protection for the embedded hydrogel via its double-clamp structure, facilitating various analytical methods while preserving culture integrity. Hybrid clamp cultures were additively manufactured from polylactic acid, filled with a bone precursor cell-laden methacrylate gelatin hydrogel, cultured for 14 days, and analyzed for cell viability, mineralization, and osseous differentiation. Results indicate no adverse effects on osteogenic differentiation or mineralization compared to conventional droplet cultures, with enhanced cell viability and simplified handling and downstream analysis. This system demonstrates the potential for robust experimentation in tissue engineering and is adaptable to various plate formats, and thus highly suitable for the investigation of biomaterial-cell interactions and the development of implants for musculoskeletal tissue defects.
Weniger anzeigenAims: Traditional cardiovascular (CV) biomarkers (high-sensitivity troponinT [hsTnT] and N-terminal pro-B-type natriuretic peptide [NT-proBNP]) are important to monitor cancer patients' cardiac function and to assess prognosis. Newer CV biomarkers (mid-regional pro-adrenomedullin [MR-proADM], C-terminal pro-arginine vasopressin [copeptin], and mid-regional pro-atrial natriuretic peptide [MR-proANP]) might outperform traditional biomarkers. Methods and results: Overall, 442 hospitalized cancer patients without significant CV disease or current infection were enrolled (61 +/- 15 years, 52% male, advanced cancer stage: 85%) and concentrations of CV biomarkers were analysed. Differences in echocardiographic, clinical, laboratory parameters were assessed. Patients were followed for up to 69 months for all-cause mortality. In univariable analyses, MR-proADM, hsTnT, copeptin, MR-proANP, and NT-proBNP predicted all-cause mortality. In multivariable analyses (adjusted for sex, age, Eastern Cooperative Oncology Group performance status, estimated glomerular filtration rate [eGFR], C-reactive protein, anti-cancer therapy, reason for hospitalization, cancer stage and type), only MR-proADM remained an independent predictor of mortality (MR-proADM per 1 ln: hazard ratio [HR] 2.27, 95% confidence interval [CI] 1.47-3.50], p < 0.001). MR-proADM had the highest area under the curve (AUC) using receiver operating characteristic analysis (AUC [95% CI] 0.74 [0.69-0.79]; hsTnT: AUC 0.69; copeptin: AUC 0.66; MR-proANP: AUC 0.63; NT-proBNP: AUC 0.62). Optimal cut-point for mortality prediction with MR-proADM was 0.94 nmol/L (HR 2.43 [95% CI 1.92-3.06], p < 0.001). Patients with MR-proADM >0.94 nmol/L were older, more often had cancer stage IV, showed reduced performance status, eGFR, haemoglobin, diastolic left ventricular function, and elevated systolic pulmonary artery pressure. Conclusion: MR-proADM is an independent predictor of mortality in advanced stage, hospitalized cancer patients without significant CV disease or current infection. The optimal MR-proADM cut-point for mortality prediction was 0.94 nmol/L with hazards for mortality being approximately 2.5 times higher. There was a continuous increase in mortality risk with stepwise increase of MR-proADM concentrations. Elevated concentrations of MR-proADM were also associated with reduced performance status and mildly reduced left ventricular diastolic function as well as higher age and more often cancer stage IV.
Weniger anzeigenIntroduction: Wheezing is an important indicator of exacerbated respiratory symptoms in early childhood and must be monitored to regulate pharmacological therapy. However, parents' subjective perception of wheezing in their children is not always precise. We investigated the objective identification of children's wheezing by parents using a digital wheeze detector (WheezeScan (TM), OMRON Healthcare Co. Ltd), its longitudinal usage patterns, and its relationship with SABA administration. Methods: We conducted a secondary nested analysis of data from the intervention arm of a multi-center randomized controlled trial completed in 2021-2022 in Berlin (Germany), London (United Kingdom), and Istanbul (Turkey). Children aged 4 to 84 months with doctor's diagnosed wheezing (GINA step 1 or 2) were included. Using an electronic diary (Wheeze-Monitor (TM), TPS), parents monitored and recorded for 120 days at home the presence or absence of their child's wheezing, detected both, with WheezeScan (TM) ("objective" wheezing), and subjective ("perceived" wheezing). Parents also recorded the child's symptoms, medication intake, and family quality of life. Questionnaires regarding symptom control, quality of life, and parental self-efficacy were answered at baseline and after 90 and 120 days. Results: Eighty-one/87 families completed the intervention arm of the study. WheezeScan (TM) was on average used 0.7 (SD 0.6) times a day, with each patient reporting a positive, negative, or "error" outcome on average in 57%, 39%, and 5% of measurements, respectively. The use of WheezeScan (TM) declined slightly during the first 90 days of monitoring and steeply thereafter. Repeated usage of WheezeScan (TM) in the same day was more frequent after a "wheeze" (HR 1.5, 95% CI 1.37-1.65, p < 0.001) and an "error" (HR 2.01, 95% CI 1.70-2.38, p < 0.001) result, compared to a "no wheeze" outcome. The average per-patient daily agreement between "objective" and "perceived" wheezing/non-wheezing was 75% at the start of the monitoring period and only weakly persisted as time passed (Spearman's rho=0.09). The frequency of short-acting beta-2-agonists (SABA) administration was lower in days with closely interspaced consecutive device uses during which the patient's status was perceived as "never wheeze" (32/455, 7%) than in those perceived as "persistent wheeze" (53/119, 44%; OR 36.6, 95% CI [14.3, 94.1]). Conclusion: Daily use of a digital WheezeScan (TM) at home allows parents to detect their child's unperceived wheezing and discloses to caregivers the longitudinal patterns of a child's wheezing disorder. Digital monitoring of wheezing also highlights poor adherence to guidelines in SABA administration for wheezing children, with under-treatment being much more frequent than over-treatment. This pioneering study opens new perspectives for further investigation of digital wheeze detectors in the early diagnosis and proper self-management of wheezing disorders in childhood.
Weniger anzeigenAim: 2,3-bisphosphoglycerate mutase (BPGM) is traditionally recognized for its role in modulating oxygen affinity to hemoglobin in erythrocytes. Recent transcriptomic analyses, however, have indicated a significant upregulation of BPGM in acutely injured murine and human kidneys, suggesting a potential renal function for this enzyme. Here we aim to explore the physiological role of BPGM in the kidney. Methods: A tubular-specific, doxycycline-inducible Bpgm-knockout mouse model was generated. Histological, immunofluorescence, and proteomic analyses were conducted to examine the localization of BPGM expression and the impact of its knockout on kidney structure and function. In vitro studies were performed to investigate the metabolic consequences of Bpgm knockdown under osmotic stress. Results: BPGM expression was localized to the distal nephron and was absent in proximal tubules. Inducible knockout of Bpgm resulted in rapid kidney injury within 4 days, characterized by proximal tubular damage and tubulointerstitial fibrosis. Proteomic analyses revealed involvement of BPGM in key metabolic pathways, including glycolysis, oxidative stress response, and inflammation. In vitro, Bpgm knockdown led to enhanced glycolysis, decreased reactive oxygen species elimination capacity under osmotic stress, and increased apoptosis. Furthermore, interactions between nephron segments and immune cells in the kidney suggested a mechanism for propagating stress signals from distal to proximal tubules. Conclusion: BPGM fulfills critical functions beyond the erythrocyte in maintaining glucose metabolism in the distal nephron. Its absence leads to metabolic imbalances, increased oxidative stress, inflammation, and ultimately kidney injury.
Weniger anzeigenThe heterotrimeric G-protein αo subunit is ubiquitously expressed in the CNS as two splice variants Gαo1 and Gαo2, regulating various brain functions. Here, we investigated the effect of single Gαo1, Gαo2, and double Gαo1/2 knockout on the postnatal development of the murine mossy fiber tract, a central pathway of the hippocampal connectivity circuit. The size of the hippocampal synaptic termination fields covered by mossy fiber boutons together with various fiber length parameters of the tract was analyzed by immunohistochemical staining of the vesicular Zinc transporter 3 (ZnT3) or Synaptoporin at postnatal days 2, 4, 8, 12, 16, and in the adult. Ultimately, Gαo1 knockout resulted in a reduced developmental growth of synaptic mossy fiber terminal fields by 37% in the adult Stratum lucidum and by 30% in the total mossy fiber tract size. Other morphological parameters such as projection length of the infrapyramidal bundle of the tract were increased (+52% in Gαo1 mice). In contrast, Gαo2 knockout had no effects on the mossy fiber tract. Moreover, by using primary heterozygous and homozygous Gαo1 knockout hippocampal cultures, we detected a strongly pronounced reduction in axon and dendrite length (-50% and -38%, respectively) as well as axon and dendrite arborization complexity (-75% and -72% branch nodes, respectively) in the homozygous knockout. Deletion of both splice variants Gαo1 and Gαo2 partially rescued the in vivo and completely reconstituted the in vitro effects, indicating an opposing functional relevance of the two Gαo splice variants for neuronal development and synaptic connectivity.
Weniger anzeigenPancreatic ductal adenocarcinoma (PDAC) remains a particularly aggressive disease with few effective treatments. The PDAC tumor immune microenvironment (TIME) is known to be immune suppressive. Oncolytic viruses can increase tumor immunogenicity via immunogenic cell death (ICD). We focused on tumor-selective (vvDD) and cytokine-armed Western-reserve vaccinia viruses (vvDD-IL2 and vvDD-IL15) and infected carcinoma cell lines as well as patient-derived primary PDAC cells. In co-culture experiments, we investigated the cytotoxic response and the activation of human natural killer (NK). Infection and virus replication were assessed by measuring virus encoded YFP. We then analyzed intracellular signaling processes and oncolysis via in-depth proteomic analysis, immunoblotting and TUNEL assay. Following the co-culture of mock or virus infected carcinoma cell lines with allogenic PBMCs or NK cell lines, CD56+ NK cells were analyzed with respect to their activation, cytotoxicity and effector function. Both, dose- and time-dependent release of danger signals following infection were measured. Viruses effectively entered PDAC cells, emitted YFP signals and resulted in concomitant oncolysis. The proteome showed reprogramming of normally active core signaling pathways in PDAC (e.g., MAPK-ERK signaling). Danger-associated molecular patterns were released upon infection and stimulated co-cultured NK cells for enhanced effector cytotoxicity. NK cell subtyping revealed enhanced numbers and activation of a rare CD56dimCD16dim population. Tumor cell killing was primarily triggered via Fas ligands rather than granule release, resulting in marked apoptosis. Overall, the cytokine-armed vaccinia viruses induced NK cell activation and enhanced cytotoxicity toward human PDAC cells in vitro. We could show that cytokine-armed virus targets the carcinoma cells and thus has great potential to modulate the TIME in PDAC.
Weniger anzeigenAims: DNA methylation profiling, recently endorsed by the World Health Organisation (WHO) as a pivotal diagnostic tool for brain tumours, most commonly relies on bead arrays. Despite its widespread use, limited data exist on the technical reproducibility and potential cross-institutional differences. The LOGGIC Core BioClinical Data Bank registry conducted a prospective laboratory comparison trial with 12 international laboratories to enhance diagnostic accuracy for paediatric low-grade gliomas, focusing on technical aspects of DNA methylation data generation and profile interpretation under clinical real-time conditions. Methods: Four representative low-grade gliomas of distinct histologies were centrally selected, and DNA extraction was performed. Participating laboratories received a DNA aliquot and performed the DNA methylation-based classification and result interpretation without knowledge of tumour histology. Additionally, participants were required to interpret the copy number profile derived from DNA methylation data and conduct DNA sequencing of the BRAF hotspot p.V600 due to its relevance for low-grade gliomas. Results had to be returned within 30 days. Results: High technical reproducibility was observed, with a median pairwise correlation of 0.99 (range 0.94-0.99) between coordinating laboratory and participants. DNA methylation-based tumour classification and copy number profile interpretation were consistent across all centres, and BRAF mutation status was accurately reported for all cases. Eleven out of 12 centres successfully reported their analysis within the 30-day timeframe. Conclusion: Our study demonstrates remarkable concordance in DNA methylation profiling and profile interpretation across 12 international centres. These findings underscore the potential contribution of DNA methylation analysis to the harmonisation of brain tumour diagnostics.
Weniger anzeigenWithin a few years, autoantibodies targeting the nervous system resulted in a novel disease classification. For several of them, which we termed 'established', direct pathogenicity has been proven and now guides diagnostic pathways and early immunotherapy. For a rapidly growing number of further anti-neuronal autoantibodies, the role in disease is less clear. Increasing evidence suggests that they could contribute to disease, by playing a modulating role on brain function. We therefore suggest a three-level classification of neurological autoantibodies according to the degree of experimentally proven pathogenicity and strength of clinical association: established, emerging, explorative. This may facilitate focusing on clinical constellations in which autoantibody-mediated mechanisms have not been assumed previously, including autoimmune psychosis and dementia, cognitive impairment in cancer, and neurodegenerative diseases. Based on recent data reviewed here, humoral autoimmunity may represent an additional "super-system" for brain health. The "brain antibody-ome", that is, the composition of thousands of anti-neuronal autoantibodies, may shape neuronal function not only in disease, but even in healthy aging. Towards this novel concept, extensive research will have to elucidate pathogenicity from the atomic to the clinical level, autoantibody by autoantibody. Such profiling can uncover novel biomarkers, enhance our understanding of underlying mechanisms, and identify selective therapies.
Weniger anzeigenCentralising soft tissue sarcoma (STS) treatment in expert centres and implementing comprehensive therapy concepts through interdisciplinary tumour boards (ITB) has led to significant treatment progress. However, our knowledge on the implementation of the ITB recommendations and its impact on patient outcome is limited. In this retrospective analysis, we examined a cohort of 222 adult patients (pts) with primary STS who were presented to the ITB of the Charit & eacute; Comprehensive Cancer Centre between 2015 and 2020. In localised disease (n = 188), resection was recommended in 71% (n = 134) of pts. The treatment modalities chemotherapy with or without regional deep hyperthermia, and radiotherapy were recommended in 37% (n = 69), 26% (n = 48) and 52% (n = 97), respectively. Complex multidisciplinary concepts were established in 29% (n = 54) including >= 3 treatment modalities. Only partial adherence, either by choice of patient or treating physician, was associated with a higher risk of both progression (HR 4.0 95%-CI 1.6-9.7 p < .01) and mortality (HR 5.3 95%-CI 1.7-16.4 p < .01). Pts inable to follow the ITB recommendations due to complications or rapid progression showed a high-risk profile with increased mortality and progression rates (HR 18.1 95%-CI 8.5-38.2 p < .001; HR 21.5 95%-CI 8.5-54.7 p < .001). To our knowledge, this represents the first German Comprehensive Cancer Centre analysis of therapy adherence in STS. It provides further real-world evidence that full adherence to ITB recommendations and the ability to adhere to them are of prognostic value for patient outcome and underlines the importance of interdisciplinary decision-making and treatment planning for STS patients.
Weniger anzeigenThe domestication of plants and animals has resulted in one of the most significant cultural and socio-economical transitions in human history. Domestication of animals, including human-supervised reproduction, largely uncoupled particular animal species from their natural, evolutionary history driven by environmental and ecological factors. The primary motivations for domesticating animals were, and still are, producing food and materials (e.g. meat, eggs, honey or milk products, wool, leather products, jewelry and medication products) to support plowing in agriculture or in transportation (e.g. horse, cattle, camel and llama) and to facilitate human activities (for hunting, rescuing, therapeutic aid, guarding behavior and protecting or just as a companion). In recent years, decoded genetic information from more than 40 domesticated animal species have become available; these studies have identified genes and mutations associated with specific physiological and behavioral traits contributing to the complex genetic background of animal domestication. These breeding-altered genomes provide insights into the regulation of different physiological areas, including information on links between e.g. endocrinology and behavior, with important pathophysiological implications (e.g. for obesity and cancer), extending the interest in domestication well beyond the field. Several genes that have undergone selection during domestication and breeding encode specific G protein-coupled receptors, a class of membrane-spanning receptors involved in the regulation of a number of overarching functions such as reproduction, development, body homeostasis, metabolism, stress responses, cognition, learning and memory. Here we summarize the available literature on variations in G protein-coupled receptors and their ligands and how these have contributed to animal domestication.
Weniger anzeigenThe thyroid hormone (TH) status is routinely assessed by thyrotropin (TSH) and thyroxine (T4). Both biomarkers are mainly regulated by TH receptor beta, whereas many peripheral organs employ the alpha receptor. Serum cluster of differentiation 5-like molecule (CD5L) is a liver-derived protein under control of both TH receptor isoforms. However, clinical data on its relation to TH status are sparse. An additional biomarker of TH status is needed in particular during pregnancy, where the routine biomarkers become dynamically disturbed. This study aimed to determine possible covariates regulating serum CD5L and to test its potential suitability as additional TH biomarker during pregnancy. A sandwich ELISA for serum CD5L was established using newly raised antibodies. Circadian effects and the impact of liver disease on serum CD5L concentrations were assessed. Serum samples from pregnant women with well-characterized TH and trace element status were analyzed, and CD5L concentrations were correlated with other indicators of TH status including TSH, fT4, fT3, copper, and selenium concentrations. The new quantitative assay for CD5L showed high accuracy. Serum CD5L was stable in dilution and refreezing experiments and did not show strong circadian variance or dependency on liver disease. In serum of pregnant women, CD5L correlated positively to fT3, but not to fT4 or TSH. Significant positive correlations of CD5L were observed with serum levels of the TH-responsive trace elements selenium and copper. The data support the potential suitability of serum CD5L as an additional marker of TH status, with potential value for pregnancy and thyroid disease.
Weniger anzeigenPurpose: This prospective study aimed to assess whether preoperative antiseptic skin cleansing reduces bacterial contamination and surgical site infections (SSI) following anterior cruciate ligament reconstruction (ACLR). We hypothesized that antiseptic cleaning would lower bacterial load, reducing contamination and early infections. Methods: One hundred and nineteen patients scheduled for ACLR were included in this prospective, nonrandomized study. Individuals were divided into two groups. Patients in the intervention group applied octenisan (R) wash lotion daily for three days before surgery and used the wash solution instead of their usual shower gel. Additionally, they swiped their leg with octenisan (R) soaked gloves on the morning of the operation. The control group followed their usual wash routine with no specific instructions. Fluid samples were taken before surgery from the irrigation bag and at 15-min intervals from the reservoir of the sterile surgical drape during the procedure. Suture material used for the ACL graft and meniscus repair were also collected for testing. The samples were subjected to a 14-day incubation period. Follow-up included outpatient visits at 6 weeks, 12 weeks and 6 months with a final evaluation at 12 months. Results: Contamination rates showed no significant difference between the control and intervention groups. The mean contamination rate in the control group was 6.4% (n = 22) and 6.6% (n = 24) in the intervention group (p = 0.28). At 12-month follow-up, 110 out of 119 participants were included (52 control, 58 intervention). T tests for age (p = 0.19), BMI (p = 0.66), and surgery duration (p = 0.38) showed no significant differences. No early SSI were observed in either group postoperatively. Conclusion: Our results indicate that the use of antiseptic wash lotion and gloves does not influence the risk of bacterial contamination during surgery.Level of evidenceLevel III.
Weniger anzeigenObjective: Noise reduction during surgical procedures leads to improved surgical performance and results. The caesarean birth (CB) is an exceptional operation and a life changing experience. Through the introduction of staff education and implementation of audiovisual feedback, we intended to reduce noise, and subsequently reduce surgical complications and increase the well-being of patients and staff. Methods: During Phase I, blinded baseline measurements of noise were conducted. Phase II started after staff education and structured questionnaires on subjective noise and stress were added, and in Phase III audiovisual feedback was introduced. Mean and peak noise levels over the time of the procedure were obtained in A-weighted decibels (dB(A)). Kruskal-Wallis H tests were performed to evaluate the impact of interventions on noise levels. Questionnaires were evaluated using descriptive statistics; stress-scores were compared using independent sample t-tests. Results: Ninety planned CBs were included. Median noise levels were 62.85 dB(A) at baseline. They decreased significantly to 60.60 dB(A) (Phase II) and 59.25 dB(A) (Phase III), respectively. This reduction of 3.6 dB(A) leads to a subjective noise reduction of around 20%. Significant differences for A-weighted and peak noise levels during actual surgery were found after combining staff education with audiovisual feedback. In Phase III, staff reported less stressful noise. Stress also decreased significantly in the patient group. Beeping machines and telephones were identified as the most stressful sources of noise. Conclusion: We show that noise reduction during CB is both necessary and possible. Diminished subjective perception of noise and stress are positive impacts of this intervention. Staff education and audiovisual feedback can help to provide a calm and lower stress environment for patients and staff during caesarean births.
Weniger anzeigenCentral insulin resistance has been linked to the development of neurodegenerative diseases and mood disorders. Various proteins belonging to the enzyme family of protein tyrosine phosphatases (PTPs) act as inhibitors of insulin signaling. Protein tyrosine phosphatase receptor type J (PTPRJ) has been identified as a negative regulator in insulin signaling in the periphery. However, the impact of PTPRJ on insulin signaling and its functional role in neuronal cells is largely unknown. Therefore, we generated a Ptprj knockout (KO) cell model in the murine neuroblast cell line Neuro2a by CRISPR-Cas9 gene editing. Ptprj KO cells displayed enhanced insulin signaling, as shown by increased phosphorylation of the insulin receptor (INSR), IRS-1, AKT, and ERK1/2. Further, proximity ligation assays (PLA) revealed both direct interaction of PTPRJ with the INSR and recruitment of this phosphatase to the receptor upon insulin stimulation. By RNA sequencing gene expression analysis, we identified multiple gene clusters responsible for glucose uptake and metabolism, and genes involved in the synthesis of various lipids being mainly upregulated under PTPRJ deficiency. Furthermore, multiple Ca2+ transporters were differentially expressed along with decreased protein biosynthesis. This was accompanied by an increase in endoplasmic reticulum (ER) stress markers. On a functional level, PTPRJ deficiency compromised cell differentiation and neurite outgrowth, suggesting a role in nervous system development. Taken together, PTPRJ emerges as a negative regulator of central insulin signaling, impacting neuronal metabolism and neurite outgrowth.
Weniger anzeigenThe gut-liver axis includes the bidirectional communication between the gut and the liver, and thus covers signals from liver-to-gut and from gut-to-liver. Disruptions of the gut-liver axis have been associated with the progression of chronic liver diseases, including alcohol-related and metabolic dysfunction-associated steatotic liver disease and cholangiopathies. Immune cells and their expression of pattern recognition receptors, activation markers or immune checkpoints might play an active role in the communication between gut and liver. Here, we present a 26-color full spectrum flow cytometry panel for human cells to decipher the role of circulating immune cells in gut-liver communication during the progression of chronic liver diseases in a non-invasive manner, which has been optimized to be used on patient-derived whole blood samples, the most abundantly available clinical material. Our panel focuses on changes in pattern recognition receptors, including toll-like receptors (TLRs) or Dectin-1, and also includes other immunomodulatory molecules such as bile acid receptors and checkpoint molecules. Moreover, this panel can be utilized to follow the progression of chronic liver diseases and could be used as a tool to evaluate the efficiency of therapeutic targets directed against microbial mediators or modulating immune cell activation.
Weniger anzeigenBackground: Little is known about the disturbance in bodily experience (BE) following ventricular assist device (VAD) implantation. The level of disturbance in BE serves as an indicator of the status of the patients' adaptation process to the device. This process encompasses coping with both the more affective, psychological conflicts and the more cognitive, practical challenges of living with the VAD. To provide an economical screening tool for everyday clinical practice, we refined and validated a questionnaire on BE in VAD patients. Methods: Seven specific items were derived from clinical experience and presented to 365 VAD patients (85% male; time since implantation: 3-36 months). The item structure was examined using factor analyses and probabilistic test theory. Discriminant validity and change sensitivity were determined in relation to associated psychometric instruments. Results: Four items were found to constitute the unidimensional bodily experience scale (BE-S). Besides a high internal consistency of the scale (omega = 0.86), the RMSEA of >0.01 indicates a very good model fit. The BE-S has high convergent validity with related constructs (Hospital Anxiety and Depression Scale, Kansas City Cardiomyopathy Questionnaire). Change sensitivity analyses proved the BE-S alone to be significantly sensitive to the temporal dynamics of psychological adaptation processes following VAD implantation. Conclusion: The BE-S constitutes a valid and economical tool for clinical practice to assess patients' disturbance in BE after VAD implantation. It is a valuable tool for identifying patients with difficulties in adapting to the VAD. Subsequently, it enables early and focused therapeutic support for these patients at risk. An economical screening tool for everyday clinical practice proves sensitive to the temporal dynamics of psychological adaptation processes following ventricular assist device (VAD) implantation. The unidimensional bodily experience scale (BE-S) is a valid measure to assess the patients' disturbance in bodily experience caused by the VAD.image
Weniger anzeigenBackground: Galectin-9 (Gal-9) has been implicated in allergic and autoimmune diseases, but its role and relevance in chronic spontaneous urticaria (CSU) are unclear. Objectives: To characterize the role and relevance of Gal-9 in the pathogenesis of CSU. Methods: We assessed 60 CSU patients for their expression of Gal-9 on circulating eosinophils and basophils as well as T cell expression of the Gal-9 receptor TIM-3, compared them with 26 healthy controls (HCs), and explored possible links with disease features including disease activity (urticaria activity score, UAS), total IgE, basophil activation test (BAT), and response to omalizumab treatment. We also investigated potential drivers of Gal-9 expression by eosinophils and basophils. Results: Our CSU patients had markedly increased rates of circulating Gal-9(+) eosinophils and basophils and high numbers of lesional Gal-9(+) cells. High rates of blood Gal-9(+) eosinophils/basophils were linked to high disease activity, IgE levels, and BAT negativity. Serum levels of TNF-alpha were positively correlated with circulating Gal-9(+) eosinophils/basophils, and TNF-alpha markedly upregulated Gal-9 on eosinophils. CSU patients who responded to omalizumab treatment had more Gal-9(+) eosinophils/basophils than non-responders, and omalizumab reduced blood levels of Gal-9(+) eosinophils/basophils in responders. Gal-9(+) eosinophils/basophils were negatively correlated with TIM-3(+)T(H)17 cells. Conclusion: Our findings demonstrate a previously unrecognized involvement of the Gal-9/TIM-3 pathway in the pathogenesis CSU and call for studies that explore its relevance.
Weniger anzeigenAim: To investigate the effect of a 16-week whole-food plant-based diet (WPBD) on periodontal parameters in patients with increased cardiometabolic risk. Materials and Methods: A total of 36 participants from a randomized clinical trial received additional periodontal assessment. The intervention group (n = 17) followed a WPBD for 16 weeks, whereas the control group (CG) (n = 19) was instructed not to change their diet. Measurements were assessed at baseline (t1), week 8 (t2) and week 16 (t3). Periodontal examination included bleeding on probing (BOP), periodontal inflamed surface area (PISA) and plaque index (PI) on six index teeth, salivary pH and matrix-matalloproteinase-8 (MMP-8). Results: At t3, the mean PISA of the index teeth was reduced by 32 mm2 (53.8) in the WPBD group and increased by 22.6 mm2 (45.1) in the CG group (intra-group p = 0.255 and p = 0.977, respectively), BOP changes were similar (intra-group p = 0.89 and p = 0.839, respectively). MMP-8 values reduced in the WPBD group by 50.73 ng/mL (117) and in the CG by 5.40 ng/mL (96.6) (intra-group p = 0.066, p = 0.837, respectively). Difference in change (t3 - t1) between the groups was p = 0.001, p = 0.003 and p = 0.032, respectively. Saliva pH increased in the WPBD group only (intra-group p = 0.007). Conclusion: A trend towards stabilization of the inflammatory parameters (BOP, PISA) was observed in the WPBD group. Because of the non-significant changes within the groups, this study highlights the imperative for future studies. ClinicalTrials.gov identifier: NCT03901183.
Weniger anzeigen