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The increasing number of patients with end stage chronic kidney disease not only calls for novel therapeutics but also for pioneering research using convincing preclinical disease models and innovative analytical techniques. The aim of this study was to introduce a virtual histology approach using micro computed tomography (µCT) for the entire murine kidney in order to close the gap between single slice planar histology and a 3D high resolution dataset. An ex vivo staining protocol based on phosphotungstic acid diffusion was adapted to enhance renal soft tissue x-ray attenuation. Subsequent CT scans allowed (i) the detection of the renal cortex, medulla and pelvis in greater detail, (ii) the analysis of morphological alterations, (iii) the quantification of the volume as well as the radio-opacity of these portions and (iv) the quantification of renal fibrotic remodeling based on altered radio-opacity using the unilateral ureteral obstruction model. Thus, virtual histology based on PTA contrast enhanced CT will in future help to refine the outcome of preclinical research on kidney associated murine disease models.
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http://dx.doi.org/10.1038/s41598-018-19773-5 | DOI Listing |
Acta Oncol
September 2025
Department of Oncology, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark.
Background And Purpose: Photon-counting computed tomography (PCCT) offers enhanced image quality, including improvements in contrast, spatial resolution, and noise reduction. In radiotherapy (RT), optimal image quality is critical for accurate tumor and organ-at-risk delineation. However, reconstruction parameter selection often relies on subjective assessment.
View Article and Find Full Text PDFInt Immunopharmacol
September 2025
Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji 133002, PR China; Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji 133002, PR China; Key Laboratory of Natural Medicines of the Changbai Mountain, M
Background: Asthma is a heterogeneous disease characterized by chronic airway inflammation and metabolic dysregulation. Recent studies highlight the role of glycolysis and oxidative phosphorylation (OXPHOS) imbalance in asthma pathogenesis, yet the underlying molecular mechanisms remain unclear. UDP-galactose-4-epimerase (GALE), a key enzyme in galactose metabolism, has not been previously explored in asthma.
View Article and Find Full Text PDFRadiographics
October 2025
Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S Kingshighway Blvd, CB 8131, St Louis, MO 63110.
CT angiography (CTA) of the aortoiliofemoral (AIF) arteries in the abdomen, pelvis, and lower extremities has become an invaluable tool in assessment of patients with peripheral arterial disease (PAD) and lower extremity trauma. AIF CTA provides rapid and comprehensive assessment of arterial inflow and outflow, guiding management of patients with chronic claudication and those with more acute manifestations, including atherothrombotic occlusion, embolic disease, or thrombosis of prior interventions such as bypass graft or stent placement. Careful attention to technique is critical in performing diagnostic AIF CTA, as pitfalls related to imaging too early or too late relative to the arrival of contrast material in the legs can lead to misdiagnosis or diagnostic uncertainty.
View Article and Find Full Text PDFJ Bronchology Interv Pulmonol
October 2025
Department of Respiratory Medicine, Nagoya University Graduate School of Medicine.
Background: The diagnostic yield of virtual bronchoscopy with radial endobronchial ultrasound (r-EBUS) for peripheral pulmonary lesions (PPLs) remains unsatisfactory because of limited lesion access by biopsy instruments. r-EBUS-guided transbronchial needle aspiration (TBNA) followed by transbronchial biopsy (TBB) (TBNA/TBB) with a guide sheath (GS) potentially increases the PPL diagnostic yield as the needle penetrates the bronchial wall, enabling subsequent forceps biopsy closer to the lesion. However, regarding the application of r-EBUS-guided TBNA/TBB for PPL diagnosis, data on the diagnostic yield of TBNA/TBB with a GS are limited compared with those on TBNA/TBB without a GS.
View Article and Find Full Text PDFWorld J Gastroenterol
August 2025
Department of Radiology, Nantong First People's Hospital, Affiliated Hospital 2 of Nantong University, Nantong 226001, Jiangsu Province, China.
Background: Accurate preoperative T staging is essential for determining optimal treatment strategies in colorectal cancer (CRC). Low-keV virtual monoenergetic images (VMIs) have been shown to enhance lesion conspicuity. This study aimed to assess the diagnostic value of dual-layer spectral computed tomography (CT)-derived VMIs, in combination with multiplanar reformation (MPR) and evaluation of peritumoral fat stranding (PFS), for improving the accuracy of T staging in CRC.
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