High fructose intake is known to be associated with increased plasma triglyceride concentration, impaired glucose tolerance, insulin resistance, and high blood pressure. In addition, excess fructose intake is also thought to be a risk factor for dementia. Previous immunohistochemical studies have shown the presence of glucose transporter 5 (GLUT5), a major transporter of fructose, in the epithelial cells of the choroid plexus and ependymal cells in the brains of humans, rats, and mice, while GLUT2, a minor transporter of fructose, was localized in the ependymal cells of rat brain. In this study, immunoreactivity for the fructose transporter GLUT8 was observed in the cytoplasm of the epithelial cells in the choroid plexus and in the ependymal cells of the brains of humans and mice. These structures were not immunoreactive for GLUT7, GLUT11, and GLUT12. Our findings support the hypothesis of the transport of intravascular fructose through the epithelial cells of the choroid plexus and the ependymal cells.
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http://dx.doi.org/10.1007/s00418-016-1444-5 | DOI Listing |
Cell Mol Life Sci
January 2025
State Key Laboratory of Reproductive Medicine and Offspring Health, Department of Histology and Embryology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, 211166, China.
Defects in motile cilia and flagella lead to motile ciliopathies, including primary ciliary dyskinesia (PCD), which manifests as multi-organ dysfunction such as hydrocephalus, infertility, and respiratory issues. CFAP65 variants are a common cause of male infertility, but its localization and function have remained unclear. In this study, we systematically evaluated CFAP65's role using Cfap65 knockout mice and human patients with CFAP65 variants.
View Article and Find Full Text PDFCell Rep
January 2025
Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Erling Skjalgssons Gate 1, 7491 Trondheim, Norway; Kavli Institute for Systems Neuroscience and Centre for Algorithms in the Cortex, Norwegian University of Science and Technology, Olav Kyrres Gate 9, 7030 Trondheim, Norway. Electronic address:
The brain uses a specialized system to transport cerebrospinal fluid (CSF), consisting of interconnected ventricles lined by motile ciliated ependymal cells. These cells act jointly with CSF secretion and cardiac pressure gradients to regulate CSF dynamics. To date, the link between cilia-mediated CSF flow and brain function is poorly understood.
View Article and Find Full Text PDFObjective: Ependymomas, rare neuroglial tumors originating from ependymal cells, can occur in the CNS and typically affect the brain's ventricles or spinal cord. Prognosis is influenced by tumor grade, location, resection extent, and preoperative Karnofsky Performance Status Scale (KPSS) scores. This study evaluates clinical features, treatment outcomes, and factors affecting prognosis in patients with intracranial ependymomas.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
January 2025
State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100080, China.
Various mature tissue-resident cells exhibit progenitor characteristics following injury. However, the existence of endogenous stem cells with multiple lineage potentials in the adult spinal cord remains a compelling area of research. In this study, we present a cross-species investigation that extends from development to injury.
View Article and Find Full Text PDFNature
January 2025
Allen Institute for Brain Science, Seattle, WA, USA.
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