MAGDALENA WILCZAK^1,2,#, MAGDALENA SURMAN^1,#,*, MAłGORZATA PRZYBYłO^1,*

Oncology Research, Vol.33, No.2, pp. 245-262, 2025, DOI:10.32604/or.2024.055449 - 16 January 2025

Abstract Angiogenesis, the expansion of pre-existing vascular networks, is crucial for normal organ growth and tissue repair, but is also involved in various pathologies, including inflammation, ischemia, diabetes, and cancer. In solid tumors, angiogenesis supports growth, nutrient delivery, waste removal, and metastasis. Tumors can induce angiogenesis through proangiogenic factors including VEGF, FGF-2, PDGF, angiopoietins, HGF, TNF, IL-6, SCF, tryptase, and chymase. This balance is disrupted in tumors, and extracellular vesicles (EVs) contribute to this by transferring proangiogenic factors and increasing their expression in endothelial cells (ECs). Malignant melanoma, a particular type of skin cancer, accounts for More >

MARLENE BENCHIMOL^1,3,*, ABIGAIL MIRANDA-MAGALHÃES², ANTONIO PEREIRA-NEVES², WANDERLEY DE SOUZA³

BIOCELL, Vol.45, No.2, pp. 259-266, 2021, DOI:10.32604/biocell.2021.014599 - 19 February 2021

Abstract Helium ion scanning microscopy (HIM) is a novel high-resolution scanning microscopy technique that uses helium ions instead of electrons to form images of the highest quality and resolution, providing a sub-nanometer resolution sputter uncoated biological cell. Here, we took advantage of HIM to explore the cell surface of Tritrichomonas foetus, a protist parasite of cattle that provokes hard infection and abortion in cows. We describe thin protrusions, like nanotubes described in other cells, with different sizes (27 nm to 81 nm in thickness) and various lengths (from 73 nm to 2 µm), as well bulbous structures… More >