Monoclonal antibodies (Ortho type) were used for immunocytochemical evaluation of cell-mediated immunity in peripheral blood from 29 patients with in situ (TisNoMo) and microinvasive (T1aNoMo) cervical carcinoma. The total number of T cells (OKT3+) was decreased in both patient groups compared to healthy volunteers. Marked difference between OKT4+ (helper/inducer) and OKT8+ (suppressor/cytotoxic) cells was observed OKT8+ level rose with advancement of disease, resulting in inverted OKT4+/OKT8+ ratio in T1aNoMo cancer patients. Antitumor immune resistance proved inhibited in both study groups manifesting itself in suppression of cell-mediated immunity.
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Braz J Microbiol
January 2025
Center of Technological Development, Biotechnology, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil.
Adjuvants are crucial for maintaining specific, protective, and long-lasting immunity. Here, we aimed to evaluate the antigenic and immunogenic activity of a recombinant form of the S1 domain of the Spike protein, associated with biogenic silver nanoparticles (bio-AgNP) and Alhydrogel as an alternative and conventional adjuvant, respectively, for a SARS-CoV-2 subunit vaccine. We produced and evaluated the antigenicity of the recombinant S1 (rS1) protein by testing its recognition by antibodies present in SARS-CoV-2 positive human serum.
View Article and Find Full Text PDFImmunol Rev
March 2025
Graduate Program in Translational Biology, Medicine, and Health, Virginia Tech, Roanoke, Virginia, USA.
A robust innate immune response is essential in combating viral pathogens. However, it is equally critical to quell overzealous immune signaling to limit collateral damage and enable inflammation resolution. Pattern recognition receptors are critical regulators of these processes.
View Article and Find Full Text PDFClin Infect Dis
January 2025
Department of Cellular Therapy and Allogeneic Stem Cell Transplantation, Karolinska University Hospital Huddinge, Karolinska Comprehensive Cancer Center, Stockholm, Sweden.
Herpes simplex virus (HSV) infection is one of the most prevalent viral infections worldwide. In general, host immunity is sufficient to clear viral shedding and recurrences, although it is insufficient to prevent subsequent virologic reactivations. In immunocompromised patients, prolonged and difficult-to-treat HSV infections may develop.
View Article and Find Full Text PDFFront Immunol
January 2025
Department of Immunology, Erasmus University Medical Center, Rotterdam, Netherlands.
Introduction: Bryostatin-1, a potent agonist of the protein kinase C, has been studied for HIV and cancer therapies. In HIV research, it has shown anti-HIV effects during acute infection and reactivation of latent HIV in chronic infection. As effective CD8+ T cell responses are essential for eliminating reactivated virus and achieving a cure, it is important to investigate how bryostatin-1 affects HIV-specific CD8+ T cells.
View Article and Find Full Text PDFJ Neuroinflammation
January 2025
Department of Neurology, Division of Neuroimmunology, School of Medicine, Johns Hopkins University, Baltimore, MD, 21287, USA.
Chronic innate immune activation in the central nervous system (CNS) significantly contributes to neurodegeneration in progressive multiple sclerosis (MS). Using multiple experimental autoimmune encephalomyelitis (EAE) models, we discovered that NLRX1 protects neurons in the anterior visual pathway from inflammatory neurodegeneration. We quantified retinal ganglion cell (RGC) density and optic nerve axonal degeneration, gliosis, and T-cell infiltration in Nlrx1 and wild-type (WT) EAE mice and found increased RGC loss and axonal injury in Nlrx1 mice compared to WT mice in both active immunization EAE and spontaneous opticospinal encephalomyelitis (OSE) models.
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