They are a commonly used cell line in scientific research, particularly in the field of neuroscience. These cells are derived from a human neuroblastoma, a type of cancer that forms in nerve tissue.
3) COVID-19 (caused by SARS-CoV-2 infection) can cause neurological symptoms and long-term effects like memory loss, anosmia, and brain inflammation. This is of particular concern.
4) Curcumin and curcuminoids (compounds from turmeric) have been shown to have anti-inflammatory, antioxidant, and neuroprotective properties. They may help mitigate the impact of COVID-19, especially in the central nervous system.
5) The study looked at the effects of curcumin, turmeric extract (EXT), and two curcuminoids (Me08 and Me23) on a neuronal cell line (SH-SY5Y) infected with SARS-CoV-2.
Me23 reduced the expression of two proteases (TMPRSS2 and TMPRSS11D) involved in viral entry into cells.
6) Me23 increased expression of the antioxidant gene NRF2 and restored activity of the enzyme NQO1, indicating antioxidant effects.
Overexpressing the ACE2 receptor in the cells enhanced viral replication. Both Me08 and Me23 reduced viral load with antiviral effect.
7) The compounds reduced levels of inflammatory cytokines like IL-6, TNF-ฮฑ, IL-17 that are elevated in COVID-19. Me08 specifically reduced INF-ฮณ levels.
8) In summary, Me23 in particular showed promising antiviral, antioxidant, and anti-inflammatory effects in neuronal cells infected with SARS-CoV-2, suggesting it may help mitigate COVID-19 impacts in the central nervous system.
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2) Researchers from the Federal University of Sรฃo Paulo have discovered the oldest known human viruses in Neanderthal bones that are over 50,000 years old. The viruses found include adenovirus, herpesvirus, and papillomavirus.
3) This finding suggests that Neanderthals could have been affected by the same viruses that affect humans today. While the viruses may not have directly caused the extinction of Neanderthals, it adds weight to the theory that viruses may have played a role in their extinction.
2) The researchers generated 3D brain spheroids (BSs) from surgically removed brain tissue from elderly patients to model the human aging brain. The BSs retained the cellular heterogeneity and gene expression patterns of the original brain tissue.
3) The BSs were found to be permissive to infection by both the original SARS-CoV-2 wild-type strain and the Omicron BA.1 and BA.2 variants. However, viral replication was limited and no active replication was detected within the BSs.
2) Immune imprinting occurs when initial exposure to a virus biases the immune system's memory response to related strains. This was observed for SARS-CoV-2, where vaccination with ancestral strains led to responses dominated by cross-reactive antibodies ...
3) ...against variants like Omicron.
The study analyzed memory B cell responses in 3 cohorts - shortly after Omicron breakthrough infection (BTI) in ancestral strain vaccine recipients, prolonged post-Omicron BTI, and prolonged post-Omicron infection in unvaccinated individuals
2) The study investigated the genetic factors influencing antibody response to COVID-19 vaccines and clinical outcomes using data from over 350,000 vaccinated individuals in the UK.
3) It confirmed previous findings that the HLA-DQB1*06 alleles enhance vaccine-induced antibody responses. However, these alleles alone did not significantly reduce COVID-19 risk at a population level.
2) From Kai Kupferschmidt's @kakape remarkable article with interviews with Tom Peacock @PeacockFlu and other experts, for the sake of simplicity, we have extracted these different steps.
2) This study analyzed notified respiratory infectious disease (NRID) data in Beijing's Tongzhou district from 2014-2022. It found NRID incidence increased during urbanization from 2017-2019 compared to pre-urbanization in 2014-2016 ...
3) ...but decreased in 2020-2022 due to COVID-19 containment. Incidence correlated positively with urbanization indicators incorporating population, economy, environment. Those under 15 saw the sharpest urbanization-linked rise in NRID rates.