Publications by authors named "Patrick Wagner"

Background Aims: Cancers of many different tissue origins can metastasize to the pleura, a space with a unique immune environment that predisposes to aggressive tumor behavior and the development of effusions, an exudative leakage of serous fluid accompanied by an immune infiltrate. Effusions are drained therapeutically to relieve dyspnea, often several times per week. Characteristically, they contain 50-1000 × 10 viable pleural T cells (PITs), which can be reliably activated and expanded in culture, making them an ideal source for generation of a cellular therapeutic.

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Emerging evidence highlights the role of the tumor microbiome, including (Fn), in a wide range of gastrointestinal cancers. Fn purportedly contributes to tumorigenesis by activating oncogenic pathways and modulating immune responses. Although the prevalence and impact of Fn has been extensively studied in colorectal cancer, no previous systematic or in situ studies have been performed in appendiceal cancer (AC).

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Blood collection, plasma processing, and cell-free DNA (cfDNA) purification were optimized to capture circulating tumor DNA without blood cell background DNA among 874 patients with cancer. cfDNA comprised predominantly mononucleosomal fragments [n = 874; mean (x¯) ± SD = 166 ± 5 bp] that generated comparably sized sequencing reads (x¯ ± SD = 162 ± 25 bp). Despite a vast range of cfDNA concentrations (0.

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Background: The use of cell salvage reduces homologous blood transfusions during operations and avoids associated complications. Therefore, autotransfusion is an integral part of Patient Blood Management (PBM). The quality control of cell salvage in Germany is performed by checking the target values of a hematocrit in the autotransfusion blood (target: over 50%) and a total protein elimination (target: over 90%).

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Spontaneous cell detachment describes an effect in which eukaryotic cells first sediment onto a heated chip and then detach from it spontaneously and collectively after a sharply defined dwell time . This behavior is triggered by the temperature gradient between the chip and the colder supernatant liquid. Notably, allows distinguishing between different yeast strains and cancer-cell lines.

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A user-friendly, portable, low-cost readout system for the on-site or point-of-care characterization of chemo- and biosensors based on an electrolyte-insulator-semiconductor capacitor (EISCAP) has been developed using a thumb-drive-sized commercial impedance analyzer. The system is controlled by a custom Python script and allows to characterize EISCAP sensors with different methods (impedance spectra, capacitance-voltage, and constant-capacitance modes), which are selected in a user interface. The performance of the portable readout system was evaluated by pH measurements and the detection of the antibiotic penicillin, hereby using EISCAPs consisting of Al/p-Si/SiO/TaO structures and compared to the results obtained with a stationary commercial impedance analyzer.

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While existing polyfluoroalkyl substances (PFAS) detection techniques are highly sensitive, their broader implementation is limited by the need for expensive equipment, lengthy analysis times, and specialized personnel. This underscores the need for fast, reliable, cost-effective, and accessible PFAS detection methods to avoid exposure to these pollutants and expedite the remediation of contaminated environments. Currently, portable electrochemical sensors for contaminant detection are gaining significant attention.

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Fluorogenic dimers enable background-free imaging of biological targets under wash-free conditions owing to a strong fluorescence enhancement in the apolar cell microenvironment. However, it is crucial that the imaging probe interacts solely with the target receptor to avoid nonspecific interactions and ensure detection with a high signal-to-noise ratio. Herein, we describe a convenient and rapid approach for the synthesis of various functionalized cyanine dyes by click chemistry allowing the fine-tuning of the physicochemical and fluorogenic properties of the dimers.

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Goal: This study evaluates the feasibility and outcome of a personalized MRI-based liver SBRT treatment planning platform with the SPION contrast agent Ferumoxytol (Sandoz Inc.; Princeton, NJ, USA) to maintain a superior real-time visualization of liver tumors and volumes of functional hepatic parenchyma for radiotherapy planning throughout multi-fractionated liver SBRT with online plan adaptations on an Elekta Unity 1.5 T MR-Linac (Elekta; Stockholm, Sweden).

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In a liquid biopsy approach, targeted mutation analysis of circulating tumor DNA (ctDNA) is a valuable tool for diagnosis, monitoring and personalization of therapy. The ctDNA usually makes up only a small fraction of the total circulating free DNA (cfDNA), and ctDNA often only differs from cfDNA at a single nucleotide. This sets strong requirements on the analytical performance of hybridization-based biosensors, which is the focus of this paper.

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Peritoneal surface malignancies (PSM) includes an expansive disease spectrum, ranging from low-grade appendiceal mucinous neoplasm to metastatic processes from invasive adenocarcinomas of the gastrointestinal tract. Management of PSM faces numerous challenges, from diagnosis to delivery of care, both from a treatment and navigational standpoint. This article outlines the various hurdles faced at different branch points and current management recommendations.

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Tumours of the appendix - a vestigial digestive organ attached to the colon - are rare. Although we estimate that around 3,000 new appendiceal cancer cases are diagnosed annually in the USA, the challenges of accurately diagnosing and identifying this tumour type suggest that this number may underestimate true population incidence. In the current absence of disease-specific screening and diagnostic imaging modalities, or well-established risk factors, the incidental discovery of appendix tumours is often prompted by acute presentations mimicking appendicitis or when the tumour has already spread into the abdominal cavity - wherein the potential misclassification of appendiceal tumours as malignancies of the colon and ovaries also increases.

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Background: The immune contexture of solid tumors plays a critical role in cancer progression and response to immunotherapy. However, immunologic characterization of appendiceal cancer (AC) has lagged behind advancements in other gastrointestinal malignancies. This study aims to define the AC immune microenvironment by quantifying CD3+ and CD8+ lymphocyte densities and assessing their prognostic significance.

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Metastasis is the leading cause of cancer-related deaths. It is unclear how intratumor heterogeneity (ITH) contributes to metastasis and how metastatic cells adapt to distant tissue environments. The study of these adaptations is challenged by the limited access to patient material and a lack of experimental models that appropriately recapitulate ITH.

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Background And Objectives: Primary adrenal sarcoma (PAS) is an exceedingly rare malignancy with limited data available on its epidemiology, management, and outcomes. This study aimed to characterize the national incidence, treatment patterns, and survival of PAS utilizing a National Cancer Database.

Methods: The National Cancer Database was queried for patients diagnosed with primary adrenal tumors from 2004 to 2019.

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This article reports on a bioanalytical sensor device that hosts three different transducer principles: impedance spectroscopy, quartz-crystal microbalance with dissipation monitoring, and the thermal-current-based heat-transfer method. These principles utilize a single chip, allowing one to perform either microbalance and heat transfer measurements in parallel or heat transfer and impedance measurements. When taking specific precautions, the three measurement modalities can even be used truly simultaneously.

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In this work, we present a compact, bifunctional chip-based sensor setup that measures the temperature and electrical conductivity of water samples, including specimens from rivers and channels, aquaculture, and the Atlantic Ocean. For conductivity measurements, we utilize the impedance amplitude recorded via interdigitated electrode structures at a single triggering frequency. The results are well in line with data obtained using a calibrated reference instrument.

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After cochlear implant (CI) insertion, there is a possibility of postoperative inflammation, which may involve proinflammatory markers such as interleukin-6. Detecting this inflammation promptly is crucial for administering anti-inflammatory drugs, if required. One potential method for detecting inflammation is using molecular imprinted polymers (MIPs).

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As one class of molecular imprinted polymers (MIPs), surface imprinted polymer (SIP)-based biosensors show great potential in direct whole-bacteria detection. Micro-contact imprinting, that involves stamping the template bacteria immobilized on a substrate into a pre-polymerized polymer matrix, is the most straightforward and prominent method to obtain SIP-based biosensors. However, the major drawbacks of the method arise from the requirement for fresh template bacteria and often non-reproducible bacteria distribution on the stamp substrate.

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Well-differentiated papillary mesothelioma (WDPM) is a rare mesothelial tumor of uncertain malignant potential. We present a unique case of a woman with synchronous WDPM and well-differentiated endometrioid adenocarcinoma (EA) arising from extraovarian endometriosis. A 56-year-old postmenopausal woman presented with a several-month history of right lower quadrant abdominal pain.

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Deep neural networks have become increasingly popular for analyzing ECG data because of their ability to accurately identify cardiac conditions and hidden clinical factors. However, the lack of transparency due to the black box nature of these models is a common concern. To address this issue, explainable AI (XAI) methods can be employed.

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Peritoneal carcinomatosis (PC) is a complex manifestation of abdominal cancers, with a poor prognosis and limited treatment options. Recent work identifying high concentrations of the cytokine interleukin-6 (IL-6) and its soluble receptor (sIL-6-Rα) in the peritoneal cavity of patients with PC has highlighted this pathway as an emerging potential therapeutic target. This review article provides a comprehensive overview of the current understanding of the potential role of IL-6 in the development and progression of PC.

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Article Synopsis
  • Researchers have developed a new fluorescent unnatural amino acid called Alared, designed for environmental sensitivity and efficient operation in the red part of the light spectrum.
  • Alared can be incorporated into bioactive peptides and exhibits varying fluorescence properties based on its surrounding environment, making it useful for studying biomolecular interactions.
  • The ability to track Alared-labeled peptides in live cells with minimal interference allows for better understanding of receptor activation and peptide binding behavior in cellular contexts.
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