Mouse (BALB/c) splenic lymphocytes co-cultured in vitro with syngeneic brain-derived microvascular smooth muscle (SM) proliferate and become activated. After subsequent transfer of the activated lymphocytes to a syngeneic host, a vasculitis develops in the host. Investigation of the possible antigen-presenting properties of the cultured SM has resulted in the demonstration of class II (Ia) antigens on the SM. Fluorescence-activated cell sorter analysis has shown that an average of 31% of unstimulated SM cells in culture were positive when stained with an anti-IE of the appropriate haplotype (H2d), and an average of 20% were positive with an anti-IA of the H2d haplotype. Controls consisting of irrelevant antibodies of the same isotype, as well as an anti-IA of the H2s haplotype, were negative. In contrast, BALB/c-derived brain microvascular endothelial cells showed considerably less class II antigen expression (7% for both IA and IE).
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Front Aging Neurosci
January 2025
Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences, Oklahoma City, OK, United States.
Introduction: Growing aging populations pose new challenges to public health as the number of people living with dementia grows in tandem. To alleviate the burden of dementia, prodromal signs of cognitive impairment must be recognized and risk factors reduced. In this context, non-invasive techniques may be used to identify early changes and monitor disease progression.
View Article and Find Full Text PDFMol Neurodegener
January 2025
The Jackson Laboratory, Bar Harbor, ME, 04609, USA.
Background: Age is the principal risk factor for neurodegeneration in both the retina and brain. The retina and brain share many biological properties; thus, insights into retinal aging and degeneration may shed light onto similar processes in the brain. Genetic makeup strongly influences susceptibility to age-related retinal disease.
View Article and Find Full Text PDFCell Mol Biol Lett
January 2025
Department of Critical Care Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, China.
Background: A previous study found that MAF1 homolog, a negative regulator of RNA polymerase III (MAF1), protects the blood-brain barrier (BBB) in sepsis-associated encephalopathy (SAE); however, the related molecular mechanisms remain unclear.
Subjects And Methods: In this study, a rat sepsis model was constructed using the cecum ligation and puncture (CLP) method. In vitro, rat brain microvascular endothelial cells and astrocytes were stimulated with serum from the sepsis model rats.
Medicine (Baltimore)
January 2025
Department of Head and Neck Surgery, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China.
Rationale: Cerebellar pontine angle lipomas with trigeminal neuralgia are rare. The treatment choice is influenced by whether the pain is caused by the lipoma or the compression of blood vessels. Herein, we aimed to report a case of the disease and provide a reference for its treatment.
View Article and Find Full Text PDFGenes Cells
January 2025
Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Aichi, Japan.
The dysfunction of the innate immune system is well-described as a clinical characteristic of COVID-19. While several groups have reported human endogenous retroviruses (ERVs) as enhancing factors of immune reactivity, characterization of the COVID-19-specific ERVs has not yet been sufficiently conducted. Here, we revealed the transcriptome profile of more than 500 ERV subfamilies and innate immune response genes in eight different cohorts of platelet, peripheral blood mononuclear cells (PBMCs), lung, frontal cortex of brain, ventral midbrain, pooled human umbilical vein endothelial cells (pHUVECs), placenta, and cardiac microvascular endothelial cells (HCMEC) from COVID-19 patients (total; n = 124) and normal samples (total; n = 53) using publicly available datasets.
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