AI Article Synopsis
- Intrauterine growth retardation was induced in rats by clamping the uterine artery during gestation, which allowed researchers to study its effect on DNA synthesis in the hippocampus and cerebellum.
- The study measured DNA accumulation by tracking the incorporation of methyl-[14C]thymidine and analyzing thymidine metabolites, revealing defects in phosphorylation and reduced thymidine use in hypotrophic rats that could hinder DNA synthesis.
- A catch-up growth phenomenon was observed in different timing across brain regions, with a strong correlation found between morphological studies and biochemical data regarding the development of neurons and glial cells.
Article Abstract
Intrauterine growth retardation was induced in the rat by clamping the uterine artery on day 17 of gestation. The effect of hypotrophy on DNA synthesis was studied in two different cerebral structures: hippocampus and cerebellum. Accumulation of DNA in these structures was biochemically measured in parallel to the incorporation of methyl-[14C]thymidine into nucleic acid at different ages and correlated with autoradiography. The various metabolites of thymidine in acid-soluble fraction were determined by using chromatographic procedures. Phosphorylation defects or reduced utilization of thymidine were found in hypotrophic rats and may delay the DNA synthesis. An essay of catch-up occurred with a different timing according to the cerebral region studied. A morphological and DNA synthesis. An essay of catch-up occurred with a different timing according to the cerebral region studied. A morphological and autoradiographic study after incorporation of [3H]thymidine was carried out in parallel. The neuronal and glial components of cytogenesis were analyzed separately and a good correlation was observed between histological and biochemical data in both groups of animals.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0165-3806(85)90217-2 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Synthesis, biological activities, DFT calculations and molecular docking studies of O-methyl-inositols.
Chem Biodivers
January 2025
Ordu University: Ordu Universitesi, Department of Chemistry, Cumhuriyet Mah., Ordu, TURKEY.
The concise synthesis of O-methyled-inositol derivative and conduritol derivatives was obtained starting from p-benzoquinone. Spectroscopic methods have been performed for characterization of new synthesized compounds. Cyclitols are useful molecules with anticancer, antibiotic, antinutrient and antileukemic activity.
View Article and Find Full Text PDFEpigenetic mechanisms underlying endometrial cancer (EC) outcomes: race-specific patterns of DNA methylation associated with molecular subtypes and survival.
Carcinogenesis
January 2025
Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, USA.
Endometrial cancer [EC] is the fourth most common cancer in women in the United States. Stark racial disparities are present in EC outcomes in which Black women have significantly higher EC-related mortality than White women. The social and biologic factors that contribute to these disparities are complex, and may include racial differences in epigenetic landscapes.
View Article and Find Full Text PDFLearning From Full Characterization of HIV Proviruses in People Receiving Long-Acting Cabotegravir/Rilpivirine With a History of Replication on the Antiretroviral Classes.
Open Forum Infect Dis
January 2025
CHU d'Orléans, Orléans, France.
Background: To better understand factors associated with virologic response, we retrospectively characterized the HIV proviruses of 7 people with HIV who received long-acting cabotegravir/rilpivirine (CAB/RPV-LA) and were selected according to the following criteria: virologic control achieved despite a history of viral replication on 1 or both corresponding antiretroviral classes (n = 6) and virologic failure (VF) after CAB/RPV-LA initiation (n = 1).
Methods: Last available blood samples before the initiation of CAB/RPV-LA were analyzed retrospectively. Near full-length HIV DNA genome haplotypes were inferred from Nanopore sequencing by the in vivo Genome Diversity Analyzer to search for archived drug resistance mutations (DRMs) and evaluate the frequency and intactness of proviruses harboring DRMs.
Chitosan-DNA nanoparticles: synthesis and optimization for long-term storage and effective delivery.
PeerJ
January 2025
Department of Biology, School of Sciences and Humanities, Nazarbayev University, Astana, Kazakhstan.
Background: Chitosan nanoparticles (CsNPs) are an effective and inexpensive approach for DNA delivery into live cells. However, most CsNP synthesis protocols are not optimized to allow long-term storage of CsNPs without loss of function. Here, we describe a protocol for CsNP synthesis, lyophilization, and sonication, to store CsNPs and maintain transfection efficiency.
View Article and Find Full Text PDFIntegrating Metal-Organic Framework Hybrid into Nucleic Acid-Based Hydrogel for Highly Selective Recognition and Sensitive Detection of Sarafloxacin.
Anal Chem
January 2025
State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control of Jiangsu Province, Jiangnan University, Wuxi 214122, China.
Metal-organic framework-based hybrids (MOFzyme) have promising applications in colorimetric aptasensors due to their highly efficient and stable catalytic activity. However, their efficient application in biosensors remains a challenging issue due to the limited reaction site and amorphous structure. Herein, we encapsulated catalase inside MOF cavities to prepare an MOFzyme with many functional groups on its surface, and the functional groups were utilized for the subsequent integration of MOFzyme into the hyaluronic acid-DNA hydrogel.
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!