A total of 305 female and 36 male SENCAR mice in six different groups were observed for 540 to 875 days for tumors as well as nonneoplastic lesions. Three of these groups were observed for their lifespans. The 123 females and 36 males, observed for their lifespans (800 to 875 days) showed median survival times ranging from 730 to 745 days. The average peak body weights were 42.4 g for females and 50.0 g for males. In the animals observed for their lifespans, the total tumor incidence was 65.6% for females and 69.4% for males. Both sexes showed a high incidence of papillary tumors of the lung, 16 to 39%, which was independent of aging. Females showed a 5.1 to 21.0% incidence of mammary tumors, which increased with age. Males showed a high incidence of hyperplastic nodules of the liver, i.e., 12 of 36 animals. Other frequently occurring tumors were leukemia and papillomas of the forestomach.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1474243 | PMC |
| http://dx.doi.org/10.1289/ehp.8668135 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Exosomal miR-302b rejuvenates aging mice by reversing the proliferative arrest of senescent cells.
Cell Metab
January 2025
Henan Academy of Sciences, Zhengzhou 450000, China; Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. Electronic address:
Cellular senescence, a hallmark of aging, involves a stable exit from the cell cycle. Senescent cells (SnCs) are closely associated with aging and aging-related disorders, making them potential targets for anti-aging interventions. In this study, we demonstrated that human embryonic stem cell-derived exosomes (hESC-Exos) reversed senescence by restoring the proliferative capacity of SnCs in vitro.
View Article and Find Full Text PDFCognitive function differs across healthy lifestyle behavior profiles: a 10-year population-based prospective cohort study.
J Nutr Health Aging
January 2025
Department of Clinical Nutrition, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China. Electronic address:
Background: Modifiable lifestyle behaviors significantly influence the risk of cognitive impairment. However, the cumulative effects of multidimensional lifestyle profiles on cognitive function remain poorly understood, as most studies examine individual lifestyle behaviors in isolation. This study aimed to identify distinct profiles of individuals based on healthy lifestyle behaviors and to examine associations between these profiles and cognitive function in older Chinese adults.
View Article and Find Full Text PDFV-ATPase Disassembly at the Yeast Lysosome-Like Vacuole Is a Phenotypic Driver of Lysosome Dysfunction in Replicative Aging.
Aging Cell
January 2025
Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, New York, USA.
Declines in lysosomal acidification and function with aging are observed in organisms ranging from yeast to humans. V-ATPases play a central role in organelle acidification, and V-ATPase activity is regulated by reversible disassembly in many different settings. Using the yeast Saccharomyces cerevisiae as a replicative aging model, we demonstrate that V-ATPases disassemble into their V and V subcomplexes in aging cells, with release of V subunit C (Vma5) from the lysosome-like vacuole into the cytosol.
View Article and Find Full Text PDFPerceived cognitive impairment and occupational functioning in prostate cancer survivors: an exploratory cross-sectional analysis.
J Cancer Surviv
January 2025
Macquarie University Clinical Trials Unit (CTU), Faculty of Medicine and Health Sciences, Macquarie University & Macquarie University Hospital, Sydney, NSW, 2109, Australia.
Purpose: Perceived cancer-related cognitive impairment (CRCI) has been reported in prostate cancer survivors. Little is known about how CRCI impacts occupational functioning in working-aged prostate cancer survivors (PCS). This study aimed to investigate the association between CRCI and occupational functioning in PCS.
View Article and Find Full Text PDFA seasonal matrix population model for ixodid ticks with complex life histories and limited host availability.
Ecology
January 2025
Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biosciences, University of Oslo, Oslo, Norway.
Many vector-borne diseases are sensitive to changes in land use and climate; hence, it is important to understand the factors that govern the vector populations. Ixodid ticks, which serve as vectors for multiple diseases, have a slow life cycle compared with many of their hosts. The observable questing population represents only a fraction of the total tick population and may include overlapping cohorts in each stage.
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!