A new high performance liquid chromatography coupled with tandem mass spectrometry (HPLC-MS/MS) assay for cediranib, a tyrosine kinase inhibitor for VEGFRs, was developed and validated, for the determination of plasma and brain levels of cediranib in small specimen volumes. Tyrphostin (AG1478) was used as internal standard. Mouse plasma and brain homogenate samples were prepared using liquid-liquid extraction. The assay was validated for a 2.5-2500 ng/mL concentration range for plasma, and for 1-2000 ng/mL range for brain homogenate. For these calibration ranges, within-assay variabilities were 1.1-14.3% for plasma and 1.5-9.4% for brain homogenate; between-assay variabilities were 2.4-9.2% for plasma, and 4.9-10.2% for brain homogenate. Overall accuracy ranged from 101.5 to 107.0% for plasma and 96.5 to 100.2% for brain homogenate, for all target concentrations. The developed assay has been successfully applied for a brain distribution study in mice at an oral dose of 5 mg/kg.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3232300 | PMC |
| http://dx.doi.org/10.1016/j.jchromb.2011.10.025 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Therapeutic Efficacy of 's Oil and Ethanol Extract in Regulation of the Neuroinflammation, Histopathological Alterations, Oxidative Stress, and Restoring Balance Treg Cells Expressing FoxP3+ in a Rat Model of Epilepsy.
Pharmaceuticals (Basel)
December 2024
Zoology Department, Faculty of Science, Fayoum University, Fayoum 63514, Egypt.
: Despite the availability of antiepileptic drugs (AEDs) that can manage seizures, they often come with cognitive side effects. Furthermore, the role of oxidative stress and neuroinflammatory responses in epilepsy and the limitations of current AEDs necessitate exploring alternative therapeutic options. Medicinal plants, e.
View Article and Find Full Text PDFEnlargement of the human prefrontal cortex and brain mentalizing network: anatomically homogenous cross-species brain transformation.
Brain Struct Funct
January 2025
Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan.
To achieve a better understanding of the evolution of the large brain in humans, a comparative analysis of species differences in the brains of extant primate species is crucial, as it allows direct comparisons of the brains. We developed a method to achieve anatomically precise region-to-region homologous brain transformations across species using computational neuroanatomy. Utilizing three-dimensional neuroimaging data from humans (Homo sapiens), chimpanzees (Pan troglodytes), and Japanese macaques (Macaca fuscata), along with the anatomical labels of their respective brains, we aimed to create a cross-species average template brain that preserves neuroanatomical correspondence across species.
View Article and Find Full Text PDFThe Neurodevelopmental Dynamics of Multilingual Experience During Childhood: A Longitudinal Behavioral, Structural, and Functional MRI Study.
Brain Sci
January 2025
Faculty of Medicine and Surgery, Vita-Salute San Raffaele University, 20132 Milan, Italy.
Background/objectives: A neurobiological framework of bi- or multilingual neurocognitive development must consider the following: (i) longitudinal behavioral and neural measures; (ii) brain developmental constraints across structure and function; and (iii) the development of global multilingual competence in a homogeneous social environment. In this study, we investigated whether multilingual competence yields early changes in executive attention control mechanisms and their underlying neural structures in the frontal-striatal system, such as the dorsal anterior cingulate cortex/pre-supplemental area and the left caudate.
Methods: We employed longitudinal neuroimaging and functional connectivity methods in a small group of multilingual children over two years.
Memantine and Amantadine KLVFF peptide conjugates: Synthesis, structure determination, amyloid-β interaction and effects on recognition memory in mice.
Eur J Pharmacol
January 2025
Department of Drug and Health Sciences, Pharmacology and Toxicology Section, University of Catania, Italy; Oasi Research Institute-IRCCS, 94018 Troina, Italy. Electronic address:
Background: Adamantane derivatives, such as memantine (Mem) and amantadine (Ada), have distinct mechanisms and therapeutic applications. Ada is primarily utilized as an antiviral and anti-Parkinson drug without significant pro-cognitive effects, Mem is effective in various clinical conditions characterized by cognitive deficits, including Alzheimer's disease. Recent evidence highlights a neuroprotective role for Aβ monomers, suggesting that preventing their aggregation into toxic oligomers could be a promising therapeutic strategy.
View Article and Find Full Text PDFTiaogeng decoction improves mild cognitive impairment in menopausal APP/PS1 mice through the ERs/NF-κ b/AQP1 signaling pathway.
Phytomedicine
January 2025
Department of Gynecology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China. Electronic address:
People with mild cognitive impairment (MCI) carry a considerable risk of developing dementia. Studies have shown that female sex hormones have long-lasting neuroprotective and anti-aging properties, and the increased risk of MCI and AD is associated with the lack of estrogen during menopause. Previous studies have shown that Tiao Geng Decoction (TGD) may have antioxidant and anti apoptotic properties, which may prevent neurodegenerative diseases.
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!