AI Article Synopsis
- The study investigated the immune responses to the SARS-CoV-2 vaccine in individuals over and under 60, revealing that older adults had lower antibody levels and a weaker T cell response.
- Aging resulted in decreased thymic function and T cell quality, leading to ineffective immune responses two months post-vaccination in those over 60.
- Additionally, issues with dendritic cell function and a proinflammatory profile in monocytes were linked to the diminished specific T cell responses observed in the older age group, suggesting improvements could enhance vaccine effectiveness for this population.
Article Abstract
The immune factors associated with impaired SARS-CoV-2 vaccine response in elderly people are mostly unknown. We studied individuals older than 60 and younger than 60 years, who had been vaccinated with SARS-CoV-2 BNT162b2 mRNA, before and after the first and second dose. Aging was associated with a lower anti-RBD IgG levels and a decreased magnitude and polyfunctionality of SARS-CoV-2-specific T cell response. The dramatic decrease in thymic function in people > 60 years, which fueled alteration in T cell homeostasis, and their lower CD161+ T cell levels were associated with decreased T cell response 2 months after vaccination. Additionally, deficient DC homing, activation, and TLR-mediated function, along with a proinflammatory functional profile in monocytes, were observed in the > 60-year-old group, which was also related to lower specific T cell response after vaccination. These findings might be relevant for the improvement of the current vaccination strategies and for the development of new vaccine prototypes.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9536264 | PMC |
| http://dx.doi.org/10.1172/jci.insight.161045 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Iron Regulatory Protein 2 (IRP2) Deficiency Is Protective Against Resistive Breathing-induced Pulmonary Inflammation.
Am J Respir Cell Mol Biol
January 2025
Lady Davis Institute for Medical Research, Montreal, Quebec, Canada;
Iron regulatory protein 2 (IRP2), a post-transcriptional regulator of cellular iron metabolism has been associated with susceptibility to chronic obstructive pulmonary disease (COPD). Resistive breathing (RB) is the hallmark of the pathophysiology of obstructive airway diseases, especially during exacerbations, where increased mechanical stress is imposed on the lung. We have previously shown that RB, through tracheal banding, mimicking severe airway obstruction, induces pulmonary inflammation and injury in previously healthy mice.
View Article and Find Full Text PDFHyaluronan Directs Alveolar Type II Cell Response to Acute Ozone Exposure in Mice.
Am J Respir Cell Mol Biol
January 2025
Duke Medicine, Medicine, Durham, North Carolina, United States.
Becoming more frequent due to climate change, ozone (O) exposures can cause lung injury. Alveolar type 2 (AT2) cells and hyaluronan (HA), a matrix component, are critical to repairing lung injury and restoring homeostasis. Here, we define the impact of HA on AT2 cells following acute O exposure.
View Article and Find Full Text PDFExploring Peripheral and Cardiac Immune Responses in a Pneumosepsis Mouse Model with Group A Streptococcus.
Am J Respir Cell Mol Biol
January 2025
Rostock University Medical Center, Institute of Medical Microbiology, Virology and Hygiene, Rostock, Germany.
(Group A Streptococcus, GAS) is a human pathogen that causes local and systemic infections of the skin and mucous membranes. However, GAS is also found asymptomatically in the nasopharynx of infants. GAS infections, including pharyngitis and invasive pneumosepsis, pose significant public health concerns.
View Article and Find Full Text PDFChronic Myelomonocytic Leukemia with Central Nervous System Involvement in a Dog.
J Am Anim Hosp Assoc
January 2025
From Veterinary Neurological Center "La Fenice," Selargius, Italy (I.T., F.T., A.G.).
An 8 yr old, male, mixed-breed dog was presented with a 2 mo history of progressive weakness, worsened in the last 2 days before examination. Neurological examination revealed ambulatory tetraparesis, ataxia, and proprioceptive deficits in all four limbs. Menace response was reduced in the right eye and discomfort was detected on neck manipulation.
View Article and Find Full Text PDFA Sorghum / Homolog Functions in PAMP-Triggered Immunity and Cell Death in Response to Infection.
Phytopathology
January 2025
University of Florida, Microbiology & Cell Science, Cancer/Genetics Research Complex 302, 2033 Mowry Road, Gainesville, Florida, United States, 32610;
(L.) Moench is the fifth most important cereal crop and expected to gain prominence due to its versatility, low input requirements, and tolerance to hot and dry conditions. In warm and humid environments the productivity of sorghum is severely limited by the hemibiotrophic fungal pathogen , the causal agent of anthracnose.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!