Fast scan cyclic voltammetry (FSCV) is an electrochemical technique that allows sub-second detection of oxidizable chemical species, including monoamine neurotransmitters such as dopamine, norepinephrine, and serotonin. This technique has been used to record the physiological dynamics of these neurotransmitters in brain tissue, including their rates of release and reuptake as well as the activity of neuromodulators that regulate such processes. This protocol will focus on the use of FSCV for the detection of dopamine within the nucleus accumbens in slices obtained from rodents. We have included all necessary materials, reagents, recipes, procedures, and analyses in order to successfully perform this technique in the laboratory setting. Additionally, we have also included cautionary points that we believe will be helpful for those who are novices in the field.
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http://dx.doi.org/10.21769/BioProtoc.2473 | DOI Listing |
BMC Pulm Med
January 2025
Central Laboratory, Liaocheng People's Hospital and Liaocheng School of Clinical Medicine, Shandong First Medical University, Liaocheng, Shandong, 252000, China.
Background: Polymicrobial pulmonary infections, common in immunocompromised patients, often manifest more severe symptoms than monomicrobial infections. Clinical diagnosis delays may lead to mortality, emphasizing the importance of fast and accurate diagnosis for these patients. Metagenomic next-generation sequencing (mNGS), as an unbiased method capable of detecting all microbes, is a valuable tool to identify pathogens, particularly in cases where infections are difficult to diagnosis using conventional methods.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden.
Background: Although β-amyloid and tau PET positivity (A+T+) has been related to neurodegeneration and cognitive decline in Alzheimer's disease (AD), the driving force of neurodegeneration in discordant AT cases remains controversial. We investigated the impact of AT status on longitudinal rates of cortical atrophy and cognitive decline.
Method: A subset of 349 individuals (cognitively unimpaired [CU; n=230], cognitively impaired [CI; n=119]) with β-amyloid and tau PET (a priori baseline), longitudinal MRI (interval; Mean=4.
Alzheimers Dement
December 2024
Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, Barcelona, Spain.
Background: Alzheimer's disease (AD) blood biomarkers alone can detect amyloid-β (Aβ) pathology in cognitively unimpaired (CU) individuals. We assessed whether combining different plasma biomarkers improves the detection of Aβ-positivity and identifies rapid amyloid deposition in CU individuals.
Method: CU participants from the ALFA+ cohort were included.
Alzheimers Dement
December 2024
Knight Alzheimer Disease Research Center, St. Louis, MO, USA.
Background: It is unknown whether fasting status affects classification of amyloid status by plasma Aβ42/40.
Methods: The cohort included 50 amyloid PET positive and 50 amyloid PET negative individuals enrolled in studies of memory and aging at the Knight Alzheimer Disease Research Center (ADRC). Included individuals had a non-fasted plasma sample and an amyloid PET scan performed within 3 months of a fasted plasma sample.
Alzheimers Dement
December 2024
University of Kansas Alzheimer's Disease Research Center, Fairway, KS, USA.
Background: Plasma biomarkers show a promising future to improving the quality of diagnosing Alzheimer's Disease (AD). However, blood processing procedures should be considered when measuring plasma biomarkers. Here we investigate brain-derived neurotrophic factor (BDNF) in platelet-rich and platelet-poor plasma.
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