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Optical time-lapsed in situ mechanochemical studies on metal halide perovskite systems

7 months 1 week ago
Metal halide perovskites are attractive for optoelectronic applications, but the existing solution-based synthetic methods rely on hazardous solvents and lack reproducibility. To overcome these challenges, solvent-free mechanochemical synthesis of perovskites can be conducted, although traditional opaque ball milling equipment hinder real-time monitoring of the reaction progress. Herein, mechanochemistry was performed with time-lapsed in situ (TLIS) measurements to elucidate the optical...
Yonghao Xiao

Senolytic compounds reduce epigenetic age of blood samples in vitro

7 months 1 week ago
Senolytic drugs raise the expectation that they can specifically eliminate a subset of senescent cells in a given tissue. In this study, we have exemplarily analyzed if a 3-day treatment of human blood samples in vitro would reduce age-associated biomarkers, with a particular focus on epigenetic age-predictions. Of eight tested compounds, JQ1, RG7112, nutlin-3a, and AMG232 reduced epigenetic age, indicating that this approach may be useful in drug screening for senolytic compounds.
Vithurithra Tharmapalan

Modification of the telomerase gene with human regulatory sequences resets mouse telomeres to human length

7 months 1 week ago
Telomeres shorten with each cell division, serving as biomarkers of aging, with human tissues exhibiting short telomeres and restricted telomerase expression. In contrast, mice have longer telomeres and widespread telomerase activity, limiting their relevance as models for human telomere biology. To address this, we engineer a mouse strain with a humanized mTert gene (hmTert), replacing specific non-coding sequences with human counterparts. The hmTert gene, which is repressed in adult tissues...
Fan Zhang

Exploring predictors of the five-time sit-to-stand test based on cross-sectional findings from the Swedish National Study on Aging and Care (SNAC)

7 months 1 week ago
CONCLUSION: The model highlights the importance of grip strength and health-related quality of life in predicting STS time in older adults. Clinicians can use these insights to develop interventions that maintain physical function by regularly assessing and monitoring these factors. Future research should explore the relationship between fall history, faster STS time, and the impact of grip strength and health-related quality of life on sedentary behavior among older adults.
Joakim Niklasson

The beneficial effects of curcumin on aging and age-related diseases: from oxidative stress to antioxidant mechanisms, brain health and apoptosis

7 months 1 week ago
Aging and age-related disease are among the most common and challenging issues worldwide. During the aging process, the accumulation of oxidative stress, DNA damage, telomere dysfunction, and other related changes lead to cellular dysfunction and the development of diseases such as neurodegenerative and cardiovascular conditions. Curcumin is a widely-used dietary supplement against various diseases such as cancer, diabetes, cardiovascular diseases and aging. This agent mediates its effects...
Ying He