Insulin-like growth factor (IGF) signaling is essential for achieving optimal body size during fetal development, whereas, in the adult, IGFs are associated with aging and age-related diseases. However, it is unclear as to what extent lifespan is influenced by events that occur during development. Here, we provide direct evidence that the exceptional longevity of mice with altered IGF signaling is not linked to prenatal programming of body size. Mice null for pregnancy-associated plasma protein-A (PAPP-A), an IGF-binding protein proteinase that increases local IGF bioavailability, are 60-70% the size of their wild-type littermates at birth and have extended median and maximum lifespan of 30-40%. In this study, PAPP-A(-/-) mice whose body size was normalized during fetal development through disruption of IgfII imprinting did not lose their longevity advantage. Adult-specific moderation of IGF signaling through PAPP-A inhibition may present a unique opportunity to improve lifespan without affecting important aspects of early life physiology.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3072285 | PMC |
| http://dx.doi.org/10.1111/j.1474-9726.2010.00589.x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Spatio-Temporal Change of Skin and Oral Microbiota: A Longitudinal Study of Microbial Diversity and Stability.
Electrophoresis
January 2025
Institute of Forensic Science, Fudan University, Shanghai, P. R. China.
The human skin and oral cavity harbor complex microbial communities, which exist in dynamic equilibrium with the host's physiological state and the external environment. This study investigates the microbial atlas of human skin and oral cavities using samples collected over a 10-month period, aiming to assess how both internal and external factors influence the human microbiome. We examined bacterial community diversity and stability across various body sites, including palm and nasal skin, saliva, and oral epithelial cells, during environmental changes and a COVID-19 pandemic.
View Article and Find Full Text PDFDoes mental exertion during incremental exercise change substrate oxidation and cardiorespiratory outcomes in individuals with overweight?
Physiol Rep
January 2025
Department of Biological Sciences in Sport, Faculty of Sport Sciences and Health, Shahid Beheshti University, Tehran, Iran.
Given the growing concern over the impact of brain health in individuals with overweight, understanding how mental exertion (ME) during exercise affects substrate oxidation and cardiorespiratory outcomes is crucial. This study examines how ME impacts these outcomes during an incremental exercise test in adults with overweight. Seventeen adults who were overweight completed an incremental exercise test on a cycle ergometer two times, with and without the Stroop task.
View Article and Find Full Text PDFAlginate coated mesoporous silica nanoparticles as oral delivery carrier of curcumin and quercetin to colon cancer: preparation, optimization, characterization, and anticancer activity.
Drug Deliv Transl Res
January 2025
Advanced Medical and Dental Institute, Universiti Sains Malaysia, Bertam, 13200, Kepala Batas, Penang, Malaysia.
The synergistic bioactive effect of polyphenols can enhance the development of functional foods to prevent chronic diseases such as cancer. Curcumin and quercetin have been shown to possess anticancer properties. The combination of curcumin and quercetin has been shown to provide synergistic effects against cancer cell proliferation.
View Article and Find Full Text PDFThe associations of the diagnostic criterion pain modified by function with functional limitation and behavioral frequency.
J Oral Facial Pain Headache
September 2024
Department of Oral Diagnostic Sciences, University at Buffalo, Buffalo, NY 14214, USA.
The aim is to assess the associations of jaw functional limitation and jaw overuse behavior with pain modified by function as a required diagnostic criterion for painful temporomandibular disorders. This cross-sectional study from the TMJ Impact Project utilized secondary data analyses of 249 participants who met the inclusion criteria of having facial pain in the prior 30 days and valid responses to the pain modified by function (Items 4A-D derived from the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) Symptom Questionnaire). Independent -tests (alpha = 0.
View Article and Find Full Text PDFSeparating the Effects of Early-Life and Adult Body Size on Chronic Kidney Disease Risk: A Mendelian Randomization Study.
J Obes Metab Syndr
January 2025
Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China.
Background: Whether there is a causal relationship between childhood obesity and increased risk of chronic kidney disease (CKD) remains controversial. This study sought to explore how body size in childhood and adulthood independently affects CKD risk in later life using a Mendelian randomization (MR) approach.
Methods: Univariate and multivariate MR was used to estimate total and independent effects of body size exposures.
Want 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!