Determination of content and specific activity of amino acids in central nervous system tissue utilizing tritium and carbon-14 dual labeling

1980 ◽  
Vol 106 (1) ◽  
pp. 191-194 ◽  
Author(s):  
Mark E. Freeman ◽  
Conchita Co ◽  
Thomas R. Mote ◽  
John D. Lane ◽  
James E. Smith
Keyword(s):  
Amino Acids ◽  
Central Nervous System ◽  
Nervous System ◽  
Specific Activity ◽  
Central Nervous System Tissue ◽  
Carbon 14

Species and age determination of central nervous system tissue by fatty acid patterns

2008 ◽  
Vol 1179 (1) ◽  
pp. 69-73 ◽  
Author(s):  
Maria Grießbach ◽  
Franziska Hartmann ◽  
Nicole Massag ◽  
Daniela Baumann ◽  
Christian Krex ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Fatty Acid ◽  
Age Determination ◽  
Central Nervous System Tissue ◽  
Fatty Acid Patterns

Determination of neurotransmitter amino acids in mouse central nervous system by CE-LIF

2013 ◽  
Vol 36 (19) ◽  
pp. 3264-3269 ◽  
Author(s):  
Xu-Jie Xiong ◽  
Xiao-Feng Guo ◽  
Xu-Xia Ge ◽  
Hong Wang ◽  
Hua-Shan Zhang
Keyword(s):  
Amino Acids ◽  
Central Nervous System ◽  
Nervous System ◽  
Neurotransmitter Amino Acids ◽  
Mouse Central Nervous System

Confocal laser microscopy of impregnated central nervous system tissue

1988 ◽  
Vol 46 ◽  
pp. 94-95
Author(s):  
J.N. Turner ◽  
M. Siemens ◽  
D. Szarowski ◽  
D.N. Collins
Keyword(s):  
Electron Microscopy ◽  
Central Nervous System ◽  
Nervous System ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Confocal Laser ◽  
High Contrast ◽  
Central Nervous System Tissue ◽  
Tissue Samples ◽  
Reflected Light

A classic preparation of central nervous system tissue (CNS) is the Golgi procedure popularized by Cajal. The method is partially specific as only a few cells are impregnated with silver chromate usualy after osmium post fixation. Samples are observable by light (LM) or electron microscopy (EM). However, the impregnation is often so dense that structures are masked in EM, and the osmium background may be undesirable in LM. Gold toning is used for a subtle but high contrast EM preparation, and osmium can be omitted for LM. We are investigating these preparations as part of a study to develop correlative LM and EM (particularly HVEM) methodologies in neurobiology. Confocal light microscopy is particularly useful as the impregnated cells have extensive three-dimensional structure in tissue samples from one to several hundred micrometers thick. Boyde has observed similar preparations in the tandem scanning reflected light microscope (TSRLM).

scholarly journals The Past, Present and Future of Flow Cytometry in Central Nervous System Malignancies

2021 ◽  
Vol 4 (1) ◽  
pp. 11
Author(s):  
Evrysthenis Vartholomatos ◽  
George Vartholomatos ◽  
George A. Alexiou ◽  
Georgios S. Markopoulos
Keyword(s):  
Central Nervous System ◽  
Flow Cytometry ◽  
Nervous System ◽  
Therapeutic Agents ◽  
Phenotypic Characterization ◽  
Cell Phenotype ◽  
Analytical Technique ◽  
The Past ◽  
Current Review

Central nervous system malignancies (CNSMs) are categorized among the most aggressive and deadly types of cancer. The low median survival in patients with CNSMs is partly explained by the objective difficulties of brain surgeries as well as by the acquired chemoresistance of CNSM cells. Flow Cytometry is an analytical technique with the ability to quantify cell phenotype and to categorize cell populations on the basis of their characteristics. In the current review, we summarize the Flow Cytometry methodologies that have been used to study different phenotypic aspects of CNSMs. These include DNA content analysis for the determination of malignancy status and phenotypic characterization, as well as the methodologies used during the development of novel therapeutic agents. We conclude with the historical and current utility of Flow Cytometry in the field, and we propose how we can exploit current and possible future methodologies in the battle against this dreadful type of malignancy.

scholarly journals Bioanalysis of small-molecule drugs in nasal and paranasal tissues and secretions: Current status and perspectives

2012 ◽  
Vol 10 (3) ◽  
pp. 686-702
Author(s):  
Ana Serralheiro ◽  
Gilberto Alves ◽  
Amílcar Falcão
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Small Molecule ◽  
Intranasal Administration ◽  
Quantitative Measurement ◽  
Current Status ◽  
Small Molecule Drugs ◽  
Development And Validation ◽  
Liquid Chromatographic

AbstractOver the last years, interest in intranasal administration as an alternative and promising route for the delivery of drugs withlocal, systemic, and even central nervous system action has tremendously increased. Accordingly, understanding of the propertiesand characteristics of the nasal cavity as well as the biodisposition processes of drugs into the nasal compartments is acquiringa significant prominence in the field of pharmacology. In this context, the development and validation of bioanalytical methodologies for the quantitative measurement of drugs and their metabolites in nasal and paranasal tissues and/or secretions is of the utmostimportance. However, currently, information concerning bioanalysis of drugs in nasal and paranasal tissues and/or secretionsis scattered. This review aims to provide a valuable overview of the methodologies that have been used for the collectionand preparation of nasal and paranasal samples with special emphasis placed on the review of liquid chromatographic methodsemployed for the quantitative determination of small-molecule drugs and their metabolites in such specimens.

A radiotracer method for the measurement of central nervous system catecholamines in vivo

1978 ◽  
Vol 56 (3) ◽  
pp. 535-538 ◽  
Author(s):  
S. W. Tang ◽  
H. C. Stancer ◽  
J. J. Warsh
Keyword(s):  
Central Nervous System ◽  
Animal Model ◽  
Nervous System ◽  
Specific Activity ◽  
Brain Catecholamines ◽  
Radiotracer Method ◽  
New Strategy ◽  
The Central Nervous System ◽  
6 Hydroxydopamine

A new strategy for measurement of brain catecholamines was tested in an animal model. [3H]Norepinephrine was infused intravenously in rabbits to label the peripheral norepinephrine pools. The specific activity of urinary 3-methoxy-4-hydroxymandelic acid was consistently higher than that for 3-methoxy-4-hydroxyphenylglycol (MHPG). Central sympathectomy with 6-hydroxydopamine abolished this difference. Using the formula we propose, it is estimated that 30–50% of urinary MHPG originates from the central nervous system.

CHRONIC LEAD ENCEPHALOPATHY

PEDIATRICS ◽  
1960 ◽  
Vol 25 (2) ◽  
pp. 309-315
Author(s):  
Harry H. White ◽  
Fred D. Fowler
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Pediatric Patients ◽  
Early Recognition ◽  
Central Nervous System Involvement ◽  
Fast Screening ◽  
The Central Nervous System ◽  
Lead Encephalopathy ◽  
Urinary Coproporphyrin

Chronic lead encephalopathy must be considered in the differential diagnosis of pediatric patients who present with manifestations of schizophrenia, behavior disorders or degenerative diseases of the central nervous system. Determination of urinary coproporphyrin is a simple, fast screening procedure applicable to office practice. The prognosis for normal mental development following encephalopathy is poor. It is hoped that early recognition of the more subtle signs of central nervous system involvement will allow treatment to be instituted soon enough to prevent the crippling mental deterioration which is so often a sequela of lead poisoning.

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