Background/purpose: Pathological vascular architecture is a feature of neoangiogenic processes such as diseases of the retina and tumor growth. The authors hypothesized that experimental human Wilms' tumors would display a vascular architecture similar to retinal diseases that are driven by vascular endothelial growth factor (VEGF).
Methods: Human Wilms' tumors were established in the right kidneys of nude mice. After 4.5 weeks of tumor growth, fluorescein angiograms were performed before death. Representative sections of tumors and contralateral, control kidneys were evaluated by fluorescent microscopy.
Results: Fluorescein angiograms demonstrated a characteristic pathological architecture. Vascular tortuosity, capillary tufting, and hemorrhage were noted. These features were not present in normal kidneys.
Conclusions: Vascular architecture of Wilms' tumor displays the specific features previously described in diseases of the retina, which have been shown to be driven by VEGF, suggesting that neoangiogenesis in this model is also VEGF driven.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0022-3468(99)90354-8 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
International benchmarking of stage at diagnosis for six childhood solid tumours (the BENCHISTA project): a population-based, retrospective cohort study.
Lancet Child Adolesc Health
February 2025
Developmental Biology and Cancer Research & Teaching Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK. Electronic address:
Background: International variation in childhood cancer survival might be explained by differences in stage at diagnosis, among other factors. As part of the BENCHISTA project, we aimed to assess geographical variation in tumour stage at diagnosis through the application, by population-based cancer registries working with clinicians, of the international consensus Toronto Childhood Cancer Stage Guidelines.
Methods: This population-based, retrospective cohort study involved 67 cancer registries from 23 European countries, Australia, Brazil, Japan, and Canada.
WT1-mRNA dendritic cell vaccination of patients with glioblastoma multiforme, malignant pleural mesothelioma, metastatic breast cancer, and other solid tumors: type 1 T-lymphocyte responses are associated with clinical outcome.
J Hematol Oncol
January 2025
Center for Cell Therapy & Regenerative Medicine (CCRG), Antwerp University Hospital (UZA), Edegem, Belgium.
Cell therapies, including tumor antigen-loaded dendritic cells used as therapeutic cancer vaccines, offer treatment options for patients with malignancies. We evaluated the feasibility, safety, immunogenicity, and clinical activity of adjuvant vaccination with Wilms' tumor protein (WT1) mRNA-electroporated autologous dendritic cells (WT1-mRNA/DC) in a single-arm phase I/II clinical study of patients with advanced solid tumors receiving standard therapy. Disease status and immune reactivity were evaluated after 8 weeks and 6 months.
View Article and Find Full Text PDFSystems-level immunomonitoring in children with solid tumors to enable precision medicine.
Cell
January 2025
Clinical Pediatrics Unit, Department of Women's and Children's Health, Karolinska Institutet, 17165 Stockholm, Sweden; Department of Immunology and Inflammation, Imperial College London, London W12 EH7, UK; Medical Research Council, Laboratory of Medical Sciences, Imperial College Hammersmith Campus, London, UK; Pediatric Rheumatology, Astrid Lindgren Children's Hospital, Karolinska University Hospital, 17176 Stockholm, Sweden. Electronic address:
Cancer is the leading cause of death from disease in children. Survival depends not only on surgery, cytostatic drugs, and radiation but also on systemic immune responses. Factors influencing these immune responses in children of different ages and tumor types are unknown.
View Article and Find Full Text PDFLiving Lab Dementia: process evaluation of an academic-practice partnership in German long term care for people living with dementia - study protocol.
BMC Geriatr
January 2025
Institute of Nursing Science, Faculty of Medicine and University Hospital Cologne, University of Cologne, Gleueler Straße 176-178, 50935, Cologne, Germany.
Background: Living Labs, as a type of academic-practice partnerships, possess the potential to transform care and research into a participatory partnership and narrow the research-practice gap to improve evidence-based and Person-centred care. Given the lack of systematic investigations of Living Labs in healthcare, we will establish a dementia-specific academic-practice partnership (Living Lab Dementia) in Germany and conduct a process evaluation. The aim of this study is to gain insights into the intervention itself (mechanisms of impact) and its implementation process (degree of implementation, barriers, and facilitators).
View Article and Find Full Text PDFInsight into dipeptidase 1: structure, function, and mechanism in gastrointestinal cancer diseases.
Transl Cancer Res
December 2024
Department of Oncology, Jiangdu People's Hospital Affiliated to Yangzhou University, Yangzhou, China.
Dipeptidase 1 (DPEP1), initially identified as a renal membrane enzyme in mature human kidneys, plays a pivotal role in various cellular processes. It facilitates the exchange of materials and signal transduction across cell membranes, contributing significantly to dipeptide hydrolysis, glucose and lipid metabolism, immune inflammation, and ferroptosis, among other cellular functions. Extensive research has delineated the complex role of DPEP1 in oncogenesis and tumor progression, with its influence being context dependent.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!