Biogerontology
Unit of Research on Cellular Biology (URBC), Department of Biology, University of Namur (FUNDP), Rue de Bruxelles, 5000, Namur, Belgium.
Published: August 2007
Acute repeated exposures to subcytotoxic concentrations of tert-butylhydroperoxide and ethanol trigger premature senescence of human diploid fibroblasts. In the present work we found an increased mRNA and protein level of interleukin-11 and heme oxygenase-1 in premature senescence of WI-38 human diploid foetal lung fibroblasts induced by both tert-butylhydroperoxide and ethanol. We tested whether interleukin-11 and heme oxygenase-1 could protect against tert-butylhydroperoxide- or ethanol-induced premature senescence when stable overexpression was established using a retroviral vector-based transduction. No protective effect was found against the decrease of the proliferative potential, the increase of the proportion of senescence-associated ss-galactosidase positive cells and the increase of the mRNA levels of six senescence-associated genes.
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http://dx.doi.org/10.1007/s10522-007-9084-8 | DOI Listing |
Biogerontology
January 2025
Clinic for Heart Surgery (UMH), Martin-Luther-University Halle-Wittenberg, Ernst-Grube-Straße 40, 06120, Halle (Saale), Germany.
If a shortened lifespan is evolutionarily advantageous, it becomes more likely that nature will strive to change it accordingly, affecting how we understand aging. Premature mortality because of aging would seem detrimental to the individual, but under what circumstances can it be of value? Based on a relative incremental increase in fitness, simulations were performed to reveal the benefit of death. This modification allows for continuous evolution in the model and establishes an optimal lifespan even under challenging conditions.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Geriatrics, The Third People's Hospital of Yunnan Province, The Second Affiliated Hospital of Dali University, 292 Beijing Road, Kunming, 650011, Yunnan Province, China.
Sarcopenia is an age-related muscle senescence disease that leads to functional limitations, physical disability and premature death in older adults. Atherogenic index of plasma (AIP) is a novel indicator of atherosclerotic status based on triglycerides and high-density lipoprotein cholesterol. The aim of this study was to investigate the association between AIP and new-onset sarcopenia and its components among middle-aged and older adults in a Chinese community.
View Article and Find Full Text PDFDose Response
January 2025
Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
Cytokinins are plant hormones that regulate cell growth and differentiation. In particular, zeatin (ZTN) delays cellular senescence of human fibroblasts and keratinocytes and exhibits anticancer activity. Chemotherapy-induced anemia is a major side effect of anticancer therapy secondary to premature senescence of red blood cells (RBCs).
View Article and Find Full Text PDFJAMA Netw Open
January 2025
Department of Neurology, Washington University in St Louis School of Medicine, St Louis, Missouri.
Importance: Both sickle cell anemia (SCA) and socioeconomic status have been associated with altered brain structure and cognitive disability, yet precise mechanisms underlying these associations are unclear.
Objective: To determine whether brains of individuals with and without SCA appear older than chronological age and if brain age modeling using brain age gap (BAG) can estimate cognitive outcomes and mediate the association of socioeconomic status and disease with these outcomes.
Design, Setting, And Participants: In this cross-sectional study of 230 adults with and without SCA, individuals underwent brain magnetic resonance imaging (MRI) and cognitive assessment.
Arch Dermatol Res
January 2025
Department of Dermatology, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Republic of Korea.
Microfocused ultrasound (MFU) and (MRF) are non-invasive modalities widely used for skin rejuvenation and are often combined with injectables, including neuromodulators and soft tissue fillers. However, large-scale, long-term safety data on such combination therapies are lacking. To address this gap, we conducted a retrospective chart review at two private practice dermatology clinics in South Korea from June 2005 to December 2023.
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