The present paper describes the modifications induced in Malpighian tubules of Locusta migratoria by uranyl nitrate. These modifications are observed only if doses injected are approximately a hundred times higher than those which affect the renal epithelium of Vertebrates. The elimination of the uranyl salts seem to occur by apical excretion of dense metallo-proteic granules. When strong doses are used, metallic particles are seen on the basal membrane and in the extracellular spaces. Such intracytoplasmic particles are rarely observed.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
New insights into uranium stress responses of Arabidopsis roots through membrane- and cell wall-associated proteome analysis.
Chemosphere
February 2025
Univ. Grenoble Alpes, INRAE, CNRS, CEA, IRIG, LPCV, 38000, Grenoble, France. Electronic address:
Article Synopsis
- Uranium is toxic and non-essential for plants, causing significant changes in Arabidopsis thaliana's root proteome when challenged with uranyl nitrate.
- A study identified 458 proteins with altered levels, showing that uranium stress affects processes like stress response, amino acid metabolism, and cell wall reorganization.
- The results indicate that uranium stress disrupts water flow in plants and alters transporter and metal-binding protein levels, suggesting mechanisms for mitigating uranium toxicity.
Soybean Extract Ameliorates Lung Injury induced by Uranium Inhalation: An integrated strategy of network pharmacology, metabolomics, and transcriptomics.
Biomed Pharmacother
November 2024
Division of Radiology and Environmental Medicine, China Institute for Radiation Protection, Taiyuan 030006, China. Electronic address:
Aim: This study aimed to evaluate the protective effect of soybean extract (SE) against uranium-induced lung injury in rats.
Materials And Methods: A rat lung injury model was established through nebulized inhalation of uranyl nitrate. Pretreatment with SE or sterile water (control group) by gavage for seven days before uranium exposure and until the experiment endpoints.
Orthogonal signal correction assisted multivariate regression approach for the estimation of uranium and acidity in PUREX process streams.
Talanta
December 2024
Process Radiochemistry Reprocessing Research and Development Division, Reprocessing Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102, Tamilnadu, India; Homi Bhabha National Institute, Anushakthi Nagar, Mumbai, 400094, Maharashtra, India. Electronic address:
A direct UV-Visible absorbance spectrophotometric method was developed for the simultaneous determination of uranium and nitric acid concentration in the PUREX process samples. The simulated system consisted of uranium and nitric acid in concentration range corresponding to reprocessing of spent nuclear fuel discharged from nuclear reactor was prepared. The absorbance of these samples was measured in the range of 400-470 nm at a scan speed of 100 nm/s and resultant spectra were recorded.
View Article and Find Full Text PDFThe Cytotoxic Effects of Human Mesenchymal Stem Cells Induced by Uranium.
Biology (Basel)
July 2024
Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China.
Bone is a major tissue for uranium deposition in human body. Considering mesenchymal stem cells (MSCs) play a vital role in bone formation and injury recovery, studying the mechanism of MSCs responding to uranium poisoning can benefit the understanding of bone damage and repair after uranium exposure. Cellular structural alterations were analyzed via transmission electron microscopy (TEM).
View Article and Find Full Text PDFPreparation of Neptunyl and Plutonyl Acetates To Access Nonaqueous Transuranium Coordination Chemistry.
J Am Chem Soc
August 2024
Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States.
Uranyl diacetate dihydrate is a useful reagent for the preparation of uranyl (UO) coordination complexes, as it is a well-defined stoichiometric compound featuring moderately basic acetates that can facilitate protonolysis reactivity, unlike other anions commonly used in synthetic actinide chemistry such as halides or nitrate. Despite these attractive features, analogous neptunium (Np) and plutonium (Pu) compounds are unknown to date. Here, a modular synthetic route is reported for accessing stoichiometric neptunyl(VI) and plutonyl(VI) diacetate compounds that can serve as starting materials for transuranic coordination chemistry.
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!