scholarly journals Cerebrospinal Fluid Magnesium Level in Different Neurological Disorders

2010 ◽  
Vol 01 (02) ◽  
pp. 60-63 ◽  
Author(s):  
Carl-Albrecht Haensch
Keyword(s):  
Cerebrospinal Fluid ◽  
Neurological Disorders ◽  
Magnesium Level

Detection of 14-3-3 brain protein in the cerebrospinal fluid of patients with paraneoplastic neurological disorders

1999 ◽  
Vol 46 (5) ◽  
pp. 774-777 ◽  
Author(s):  
Albert Saiz ◽  
Francesc Graus ◽  
Josep Dalmau ◽  
Alex Pifarr� ◽  
Concepci� Mar�n ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Neurological Disorders ◽  
Brain Protein ◽  
Paraneoplastic Neurological Disorders

The contribute of cerebrospinal fluid free light-chain assay in the diagnosis of multiple sclerosis and other neurological diseases in an Italian multicenter study

2021 ◽  
pp. 135245852110641
Author(s):  
Gaetano Bernardi ◽  
Tiziana Biagioli ◽  
Paola Malpassi ◽  
Teresa De Michele ◽  
Domizia Vecchio ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Cerebrospinal Fluid ◽  
Neurological Disorders ◽  
Operating Characteristic ◽  
Neurological Diseases ◽  
Characteristic Curve ◽  
Oligoclonal Bands ◽  
Free Light Chains ◽  
Complementary Information ◽  
Combined Use

Background: Cerebrospinal fluid (CSF) free light chains (FLCs) can be an alternative assay to oligoclonal bands (OCBs) in inflammatory neurological disorders, but threshold has no consensus. Objective: To assess the diagnostic accuracy of CSF FLCs in multiple sclerosis (MS) and other neurological diseases. Methods: A total of 406 patients from five Italian centers. FLCs were measured in CSF and serum using Freelite MX assays on Optilite. Results: A total of 171 patients were diagnosed as MS, 154 non-inflammatory neurological diseases, 48 inflammatory central nervous system (CNS) diseases, and 33 peripheral neurological diseases. Both kFLC and λFLC indices were significantly higher in patients with MS compared to other groups ( p < 0.0001). The kFLC index ⩾ 6.4 is comparable to OCB for MS diagnosis (area under the receiver operating characteristic curve (AUC) = 0.876; sensitivity 83.6% vs 84.2%; specificity 88.5% vs 90.6%). λFLC index ⩾ 5 showed an AUC of 0.616, sensitivity of 33.3% and specificity of 90.6%. In all, 12/27 (44.4%) MS patients with negative OCB had kFLC index ⩾ 6.4. Interestingly, 37.5% of 24 patients with a single CSF IgG band showed high kFLC index and 12.5% positive λFLC index. Conclusion: Our findings support the diagnostic utility of FLC indices in MS and other CNS inflammatory disorders, suggesting a combined use of FLC and OCB to help clinicians with complementary information.

HPLC method for measurement of purine nucleotide degradation products in cerebrospinal fluid

1996 ◽  
Vol 42 (5) ◽  
pp. 756-760 ◽  
Author(s):  
L Kuracka ◽  
T Kalnovicová ◽  
B Líska ◽  
P Turcáni
Keyword(s):  
Cerebrospinal Fluid ◽  
Uric Acid ◽  
Neurological Disorders ◽  
Limit Of Detection ◽  
Degradation Products ◽  
Potassium Phosphate ◽  
Hplc Method ◽  
Potassium Phosphate Buffer ◽  
Nucleotide Degradation

Abstract We describe a convenient method for the separation and quantification of xanthine, hypoxanthine, and uric acid in 20 microL of cerebrospinal fluid (CSF) with use of HPLC and ultraviolet detection. The analysis is performed on a Sepharon SGX C18 column and the elution system consists of potassium phosphate buffer, pH 5.1, with 20 mL/L methanol. The lower limit of detection was 4 pmol for hypoxanthine and xanthine and 6 pmol for uric acid. Analytical recoveries of purine metabolites ranged from 98.6% to 102.9%. The intra- and interassay CVs were &lt;3%. The applicability of the method is illustrated with the determination of micromolar concentrations of xanthine, hypoxanthine, and uric acid in CSF samples obtained from 113 patients with various neurological disorders.

Time-resolved immunofluorometric assay of complement C3: application to cerebrospinal fluid

1993 ◽  
Vol 39 (2) ◽  
pp. 309-312 ◽  
Author(s):  
O Gaillard ◽  
D Meillet ◽  
M C Diemert ◽  
L Musset ◽  
J Delattre ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Neurological Disorders ◽  
Biological Fluids ◽  
Clinical Applications ◽  
Complement C3 ◽  
Complement Components ◽  
Time Resolved ◽  
Sandwich Type ◽  
Analytical Range ◽  
Immunochemical Methods

Abstract Complement components have a role in various neurological disorders. Complement C3 can be measured by immunochemical methods, but only radioimmunoassays and electroimmunodiffusion assays (EIDs) are sufficiently sensitive to be applied to biological fluids in which the C3 concentration is low, especially cerebrospinal fluid (CSF). We report a sandwich-type time-resolved immunofluorometric assay (TR-IFMA) for C3 in CSF. The linearity (0.7-3650 micrograms/L) and intra- (CV &lt; 4.8%) and inter-assay (CV &lt; 10.9%) precision were satisfactory and the results agreed with those of EID. The assay is extremely sensitive (&lt; 1 microgram/L) and its analytical range is large and well suited to clinical applications. This simple TR-IFMA is thus a nonisotopic alternative to radioimmunoassay for the quantification of complement C3 in CSF.

Epstein-Barr virus-specific antibody response in cerebrospinal fluid and serum of patients with multiple sclerosis

2010 ◽  
Vol 16 (7) ◽  
pp. 883-887 ◽  
Author(s):  
Massimiliano Castellazzi ◽  
Carmine Tamborino ◽  
Alice Cani ◽  
Elena Negri ◽  
Eleonora Baldi ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Cerebrospinal Fluid ◽  
Neurological Disorders ◽  
Epstein Barr Virus ◽  
Serum Levels ◽  
Nuclear Antigen ◽  
Enzyme Linked Immunosorbent Assay ◽  
Barr Virus ◽  
Epstein Barr ◽  
Multiple Sclerosis Patients

Cerebrospinal fluid and serum levels and intrathecal synthesis of anti-Epstein—Barr virus (EBV) IgG were measured by enzyme-linked immunosorbent assay in 80 relapsing—remitting multiple sclerosis patients grouped according to clinical and magnetic resonance imaging (MRI) evidence of disease activity. Eighty patients with other inflammatory neurological disorders (OIND) and 80 patients with non-inflammatory neurological disorders (NIND) served as neurological controls. Cerebrospinal fluid concentrations were higher in OIND than in multiple sclerosis ( p < 0.0001) and NIND ( p < 0.01) for anti-viral-capsid-antigen (anti-VCA) IgG, in multiple sclerosis than in NIND ( p < 0.01) and in OIND than in NIND ( p < 0.05) for anti-EBV nuclear antigen-1 (EBNA-1) IgG. Serum levels were more elevated in OIND than in multiple sclerosis ( p < 0.05) and in MRI inactive than in MRI active multiple sclerosis ( p < 0.0001) for anti-VCA IgG, and in multiple sclerosis than in OIND and NIND ( p < 0.01) for anti-EBNA-1 IgG. Serum titres of anti-VCA and anti-EBNA-1 IgG were also positively ( p < 0.05) and inversely ( p < 0.001) correlated, respectively, with the Expanded Disability Status Scale. An intrathecal IgG production of anti-VCA and anti-EBNA-1 IgG, as indicated by Antibody Index, was present only in a limited number of multiple sclerosis patients and controls (range from 1.3 to 6.3%). These findings do not support a direct pathogenetic role of EBV-targeted humoral immune response in multiple sclerosis.

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