Non-invasive assessment of the biodistribution is of great importance during the development of new pharmaceutical compounds. In this contribution, the applicability of in ovo MRI for monitoring the biodistribution of MR contrast agent-labelled compounds was investigated in mamaria carcinomas xentotransplanted on the chorioallantoic membrane (CAM) exemplarily for Gd-DOTA and cHSA-PEO (2000)16-Gd after systemic injection of the compounds into a chorioallantoic capillary vein. MRI was performed directly prior and 30 min, 3 h, 5 h, 20 h, and 40 h after injection of the compound. The biodistribution of injected compounds could be assessed by MRI in different organs of the chicken embryo as well as in xenotransplanted tumors at all time points. A clearly prolonged enhancement of the tumor substrate could be shown for cHSA-PEO (2000)-Gd. In conclusion, high-resolution in ovo MR imaging can be used for assessment of the in vivo biodistribution of labelled compounds, thus enabling efficient non-invasive initial testing.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5413881 | PMC |
| http://dx.doi.org/10.1038/srep46690 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Polydiacetylene (PDA) Embedded Polymer-Based Network Structure for Biosensor Applications.
Gels
January 2025
Biohybrid Systems Research Center (BSRC), Inha University, 100 Inha-ro, Michuhol-gu, Incheon 22212, Republic of Korea.
Biosensors, which combine physical transducers with biorecognition elements, have seen significant advancement due to the heightened interest in rapid diagnostic technologies across a number of fields, including medical diagnostics, environmental monitoring, and food safety. In particular, polydiacetylene (PDA) is gaining attention as an ideal material for label-free colorimetric biosensor development due to its unique color-changing properties in response to external stimuli. PDA forms through the self-assembly of diacetylene monomers, with color change occurring as its conjugated backbone twists in response to stimuli such as temperature, pH, and chemical interactions.
View Article and Find Full Text PDFDeep learning-based drug screening for the discovery of potential therapeutic agents for Alzheimer's disease.
J Pharm Anal
October 2024
College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
Alzheimer's disease (AD) is gradually increasing in prevalence and the complexity of its pathogenesis has led to a lengthy process of developing therapeutic drugs with limited success. Faced with this challenge, we proposed using a state-of-the-art drug screening algorithm to identify potential therapeutic compounds for AD from traditional Chinese medicine formulas with strong empirical support. We developed four deep neural network (DNN) models for AD drugs screening at the disease and target levels.
View Article and Find Full Text PDFA Prospective, Observational, Open-Label, Non-comparative, Multi-center Study for the Evaluation of Efficacy and Safety of Levonadifloxacin (Intravenous and Oral) in Patients With Community-Acquired Bacterial Pneumonia.
Cureus
December 2024
Respiratory Medicine, Gujarat Medical Education and Research Society of Department of Health and Family Welfare (GMERS) Medical College and General Hospital, Vadodara, IND.
Background Community-acquired bacterial pneumonia (CABP) is associated with a substantial healthcare burden. The emergence of multi-drug resistance in is becoming an increasing concern in the management of CABP. This study aims to evaluate the efficacy and safety of levonadifloxacin in the treatment of CABP, focusing on both oral and intravenous (IV) therapy.
View Article and Find Full Text PDFEffects of unsaturated C18 fatty acids on "glucose-glutathione" Maillard reaction: Comparison and formation pathways of initial stage and meaty flavor compounds.
Food Res Int
February 2025
Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China. Electronic address:
To explore the effect of oleic acid, linoleic acid, and linolenic acid on "glucose-glutathione" Maillard reaction initial stage and meaty flavor compounds formation pathways, glutathione-Amadori compound was synthesized, and identified by Q/TOF and NMR. Depending on the concentration of glutathione and glutathione-Amadori compound quantified by UPLC-MS/MS, the unsaturated C18 fat acids inhibited glutathione Amadori compound formation or accelerated degradation, and oleic acid inhibited most markedly. The results showed that 65 volatile compounds were detected by GC-MS-O in four model systems.
View Article and Find Full Text PDFDetermination of the Zebrafish Embryo Developmental Toxicity Assessment (ZEDTA) as an Alternative Non-Mammalian Approach for the Safety Assessment of Agrochemicals.
Reprod Toxicol
January 2025
Biosciences, Faculty of Health and Life Sciences, University of Exeter, Stocker Road, Exeter, Devon, EX4 4QD, UK. Electronic address:
With the US Environment Protection Agency reducing requests for (and funding of) mammalian studies alongside the proposed elimination of requests by 2035, there is an urgent need for fully validated New Approach Methods (NAMs) to fill the resultant gap for safety assessment of agrochemicals. One promising NAM for assessing the potential for human prenatal developmental toxicity potential is the Zebrafish Embryo Developmental Toxicity Assessment, a bioassay that has been used by the pharmaceutical industry for more than a decade in early-stage drug safety assessment. Despite its promise, little data has been generated to assess the validity of ZEDTA for assessing Developmental and Reproductive Toxicity of new agrochemical products.
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!