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Human cytomegalovirus (HCMV) has been detected in tissue samples from patients with glioblastoma but little is known about the systemic immunological response to HCMV in these patients. To investigate the presence and clinical significance of HCMV antibodies levels in plasma samples obtained from patients with brain tumors. HCMV-specific IgG and IgM antibody levels were determined in 59 plasma samples collected from brain tumor patients included in a prospective study and in 114 healthy individuals. We examined if the levels of HCMV specific antibodies varied in patients with different brain tumor diagnoses compared to healthy individuals, and if antibody levels were predictive for survival time. : HCMV specific IgG antibodies were detected by ELISA in 80% and 89% of patients with GBM and astrocytoma grades II-III, respectively, in all samples (100%) from patients with secondary GBM and brain metastases, as well as in 80% of healthy donors ( = 114). All plasma samples were negative for HCMV-IgM. Patients with brain metastases who had higher plasma HCMV-IgG titers had longer survival times ( = 0.03). : HCMV specific IgG titers were higher among all brain tumor patient groups compared with healthy donors, except for patients with secondary GBM. Higher HCMV specific IgG levels in patients with brain metastases but not in patients with primary brain tumors were associated with prolonged survival time.
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http://dx.doi.org/10.3390/medicina59071248 | DOI Listing |
Viruses
August 2025
Viral Immunology Center, Department of Biology, Georgia State University, Atlanta, GA 30303, USA.
Pyroptosis is a proinflammatory programmed cell death (PCD) that protects the host against invading viruses. We previously reported that pyroptosis plays a prominent role in the pathogenesis of murine cytomegalovirus (MCMV) retinal necrosis using mice with MAIDS as a mouse model for AIDS-related human cytomegalovirus (HCMV) retinal necrosis. Because MCMV and HCMV exhibit species specificity, we sought to determine if pyroptosis induction extends to different cell types of murine or human origin.
View Article and Find Full Text PDFPathogens
July 2025
Department of Medicine, Cambridge Institute of Therapeutic Immunology and Infectious Disease, Cambridge Biomedical Campus, School of Clinical Medicine, University of Cambridge, Cambridge CB2 2QQ, UK.
Human cytomegalovirus (HCMV) establishes lifelong latency in the host, with the bone marrow (BM) CD34+ cells serving as a key reservoir. To investigate tissue-specific immune responses to CMV, we analysed paired peripheral blood mononuclear cells (PBMCs) and bone marrow mononuclear cells (BMMNCs) from HCMV-seropositive donors using multiparametric flow cytometry and cytokine FluroSpot assays. We assessed immune cell composition, memory T cell subsets, cytokine production, cytotoxic potential, activation marker expression, and checkpoint inhibitory receptor (CIR) profiles, both ex vivo and following stimulation with lytic and latent HCMV antigens.
View Article and Find Full Text PDFJ Virol
August 2025
Division of Clinical Virology, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan.
Herpesviruses replicate their genomes and package them into capsids within the host cell nucleus. These capsids must then translocate from the nucleus to the cytoplasm through a process designated nuclear egress. The virus-encoded nuclear egress complex (NEC), consisting of a nuclear matrix protein and a nuclear membrane protein, plays a crucial role in this process.
View Article and Find Full Text PDFInt J Biol Macromol
September 2025
State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, China; Key Laboratory of Viral Pathogenesis & Infection Prevention and Control (Jinan University), Ministry of Education, Guangzhou 510632, China. Electronic address:
Early studies have shown that epigenetic modifications play an important role in the establishment of latent human cytomegalovirus (HCMV) infection. However, the specific regulatory mechanisms remain unclear, especially regarding how HCMV overcomes these silencing effects of epigenetic modifications during viral reactivation from latency. Here, we showed that HCMV reactivation from latency is indeed regulated by histone H3K27 trimethylation.
View Article and Find Full Text PDFJ Pediatr Surg
August 2025
Departments of Surgery, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA. Electronic address:
Purpose: We sought to examine the humoral and cellular immune responses to transamniotic fetal mRNA vaccination against a human cytomegalovirus (hCMV) antigen over time in early postnatal life in a rodent model.
Methods: Seven pregnant Sprague Dawley dams underwent volume-matched intra-amniotic injections in all their fetuses (n = 82) of a custom-made mRNA encoding for hCMV envelope glycoprotein-B (hCMV-gB) antigen encapsulated by a lipid-polymer composite on gestational day 17 (E17; term = E21-22). At three time points between 1 and 3 months after birth, serum levels of antigen-specific hCMV-gB IgG antibodies were measured by ELISA.