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Evolution of Theories on Doxorubicin-Induced Late Cardiotoxicity-Role of Topoisomerase.
Int J Mol Sci
December 2024
Department of Pneumology, Oncology and Allergology, Medical University of Lublin, Jaczewskiego 8, 20-090 Lublin, Poland.
Doxorubicin (DOX) has been widely used as a cytotoxic chemotherapeutic. However, DOX has a number of side effects, such as myelotoxicity or gonadotoxicity, the most dangerous of which is cardiotoxicity. Cardiotoxicity can manifest as cardiac arrhythmias, myocarditis, and pericarditis; life-threatening late cardiotoxicity can result in heart failure months or years after the completion of chemotherapy.
View Article and Find Full Text PDFLongitudinal Trajectory of Dopamine and Serotonin Transporters in Parkinson Disease.
J Nucl Med
January 2025
Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea.
Parkinson disease (PD) is a multisystem disorder marked by progressive dopaminergic neuronal degeneration in the substantia nigra, as well as nondopaminergic systems. Our aim was to investigate longitudinal changes in -(3-[F]fluoropropyl-2β-carbomethoxy-3β-(4-iodophenyl)nortropane (F-FP-CIT) binding at the putamen, substantia nigra, and raphe nuclei in PD. This retrospective cohort study enrolled 127 patients with PD, who underwent F-FP-CIT PET scans twice or more, and 71 age- and sex-matched healthy controls.
View Article and Find Full Text PDFUse of the specific binding ratio distribution to characterise multiple system atrophy in advanced iodine-123-labelled N-(3-fluoropropyl)-2β-carbomethoxy-3β-(4-iodophenyl) nortropane serotonin transporter imaging.
Asia Ocean J Nucl Med Biol
January 2025
Department of Radiology, Fujita Health University School of Medicine, Aichi, Japan.
Objectives: Sudden death in multiple system atrophy (MSA) is caused by decreased serotonergic innervation, but there is no routine test method for this decrease. In addition to dopamine transporters, iodine-123-labelled N-(3-fluoropropyl)-2β-carbomethoxy-3β-(4-iodophenyl) nortropane (I-FP-CIT) binds serotonin transporters (SERTs). We noted a binding potential to quantify the total quantity of I-FP-CIT binding to its receptors.
View Article and Find Full Text PDFShort-term exposure of enrofloxacin inhibits synthesis of central estradiol through secretoneurin a/aromatase B (cyp19a1b) pathway in crucian carp.
Comp Biochem Physiol C Toxicol Pharmacol
December 2024
College of Animal Science & Technology, Jiangxi Agricultural University, Nanchang 330045, PR China. Electronic address:
Article Synopsis
- Enrofloxacin (ENR) affects steroid metabolism in female crucian carp by increasing testosterone synthesis and inhibiting its conversion to estradiol.
- The study evaluated the impact of ENR on the levels of testosterone and estradiol in blood and brain, as well as the expression of key genes involved in hormone regulation.
- Findings showed that ENR activates certain genes (scg2a and gth 2β) while repressing aromatase B (cyp19a1b), with the PI3K/Akt signaling pathway being involved in these hormonal changes.
Neural substrates underlying distinct dual cognitive syndromes in Parkinson's disease.
Eur J Neurol
January 2025
Department of Human Health Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Background: A dual-syndrome hypothesis, which states the cognitive impairments in Parkinson's disease (PD) are attributable to frontostriatal dopaminergic dysregulation and cortical disturbance-each associated with attention/executive and memory/visuospatial dysfunction, respectively-has been widely accepted. This multisystem contribution also underlies highly heterogeneous progression rate to dementia.
Methods: Nondemented PD patients who underwent [I]N-ω-fluoropropyl-2β-carbomethoxy-3β-(4-iodophenyl) nortropane ([I]FP-CIT) SPECT and neuropsychological examinations were enrolled.
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