Brain-derived neurotrophic factor (BDNF) has emerged as a major regulator of synaptic plasticity in the adult brain and acute BDNF infusion has been shown to trigger long-term potentiation (BDNF-LTP) in adult rats. Here we compared the effects of acute BDNF infusion in young adult and aged anesthetized rats. In young rats, BDNF-LTP was accompanied by increased activation of the BDNF receptor TrkB, and extracellular signal-regulated kinase (ERK), as well as enhanced evoked release of glutamate in synaptosomes prepared from DG. In aged rats, both BDNF-LTP and the associated signaling were significantly impaired, while analysis of untreated hippocampal tissue from aged rats showed that activation of TrkB and ERK were decreased. In addition to effects in the DG, BDNF-LTP was accompanied by robust phosphorylation of the calcium/cAMP-responsive element binding protein (CREB) in tissue prepared from entorhinal cortex of both young and aged rats. These results suggest a cascade of presynaptic changes contributing to the expression of BDNF-induced LTP and show that BDNF-induced transduction mechanisms are attenuated with age.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.neurobiolaging.2004.01.003 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The type of diet consumed during prepuberty modulates plasma cholesterol, hepatic LXRα expression, and DNA methylation and hydroxymethylation during adulthood in male rats.
PLoS One
January 2025
Department of Nutritional Physiology, National Institute of Medical and Nutritional Sciences "Salvador Zubirán", Mexico City, Mexico.
Childhood obesity increases the risk of developing metabolic diseases in adulthood, since environmental stimuli during critical windows of development can impact on adult metabolic health. Studies demonstrating the effect of prepubertal diet on adult metabolic disease risk are still limited. We hypothesized that a prepubertal control diet (CD) protects the adult metabolic phenotype from diet-induced obesity (DIO), while a high-fat diet (HFD) would predispose to adult metabolic alterations.
View Article and Find Full Text PDFSurgeon attitudes toward risk stratification in emergency surgery for the elderly: an ESTES cross-sectional survey.
Eur J Trauma Emerg Surg
January 2025
Division of Traumatology, Surgical Critical Care and Emergency Surgery, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, USA.
Purpose: Our study explores the utilization of objective tools for preoperative assessment of elderly patients by Emergency General Surgeons (EGS).
Methods: A descriptive cross-sectional survey was conducted via the European Society for Trauma and Emergency Surgery (ESTES) Research Committee. EGS were invited through the ESTES members' mailing list and social media platforms.
Snake Venom Pharmacokinetics and Acute Toxic Outcomes Following Envenoming: Experimental and Clinical Correlations.
Toxins (Basel)
December 2024
Department of Pharmacology, Phramongkutklao College of Medicine, Bangkok 10400, Thailand.
An understanding of snake venom pharmacokinetics is essential for determining clinical outcomes of envenoming and developing therapeutic approaches to the treatment of envenoming, especially regarding the timing and optimal dosage of antivenom administration. (Eastern Russell's viper) envenoming causes systemic coagulopathy and severe hemorrhage including acute kidney injury. These toxic outcomes can be diminished by the administration of high quantities of Russell's viper antivenom.
View Article and Find Full Text PDFExploring Drug-Drug Interactions between Losartan and Carbamazepine: A Pharmacokinetic and Pharmacodynamic Study.
Curr Drug Metab
January 2025
Department of Pharmacology, College of Pharmaceutical Sciences, Dayananda Sagar University, Deverakeggahalli, Kanakapura Road, Ramanagara Distt, Karnataka, 562112, India.
Background: Hypertension, which affects 1.28 billion people globally aged 30 to 79, is characterized by continuously high blood pressure (140/90 or more) and raises the risk of premature death. Losartan, an angiotensin receptor blocker (ARB), is suggested for patients under the age of 55 who cannot take ACE inhibitors as a first treatment option.
View Article and Find Full Text PDFDental pulp stem cell-derived intracellular vesicles prevent orthodontic relapse by inhibiting PI3K/Akt/NF-κB-mediated osteoclast activity.
Stem Cell Res Ther
January 2025
State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, NO.237, Luo Yu Road, Hongshan District, Wuhan City, 430079, China.
Background: Orthodontic relapse, the undesired deviation of teeth from their corrected positions, remains a significant challenge in clinical orthodontics. Incomplete periodontal bone remodeling has been identified as a key factor in this process. Despite decades of research, currently there are no effective strategies to prevent relapse.
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!