ABSTRACT
OBJECTIVE: To elucidate whether cerebrospinal fluid (CSF) concentrations of the microtubule-associated tau protein are related to the risk for sporadic amyotrophic lateral sclerosis (SALS). PATIENTS/METHODS: We measured tau concentrations in the CSF of 18 patients with SALS and 75 age- and sex-matched controls, using a specific ELISA method. RESULTS: The mean CSF concentrations of tau protein did not differ significantly between SALS patient and control groups, were not influenced by the clinical form (spinal vs bulbar) of ALS, and were not correlated with age, age at onset, and duration of the disease. CONCLUSIONS: CSF tau concentrations are not a biochemical marker of ALS.
Subject(s)
Amyotrophic Lateral Sclerosis/cerebrospinal fluid , tau Proteins/cerebrospinal fluid , Age Factors , Aged , Biomarkers/cerebrospinal fluid , Case-Control Studies , Enzyme-Linked Immunosorbent Assay , Female , Humans , Lumbar Vertebrae , Male , Middle Aged , Severity of Illness Index , Spinal PunctureABSTRACT
OBJECTIVES: Some previous reports suggested a potential role of insulin in memory and in the pathophysiology of Alzheimer's disease (AD). We assessed the cerebrospinal fluid (CSF) levels of insulin in patients with AD and in age and sex-matched controls trying to elucidate whether this value could be related with the risk or severity of AD. PATIENTS AND METHODS: We measured the CSF insulin levels in 27 patients with AD and 16 matched controls using a RadioImmunoanalysis method. RESULTS: CSF insulin levels did not differ significantly between AD-patient and control groups. These values were not correlated with age, age at onset, duration of the disease, and scores of the MiniMental State Examination in the AD group. CONCLUSION: These results suggest that CSF insulin concentrations are not related with the risk or severity of AD.
Subject(s)
Alzheimer Disease/cerebrospinal fluid , Alzheimer Disease/physiopathology , Insulin/cerebrospinal fluid , Age of Onset , Aged , Aged, 80 and over , Alzheimer Disease/psychology , Biomarkers/cerebrospinal fluid , Body Mass Index , Female , Humans , Male , Middle Aged , Psychological Tests , Risk Factors , Severity of Illness Index , Spinal PunctureABSTRACT
UNLABELLED: FUNDAMENTALS AND OBJECTIVE: Multiple sclerosis (MS) is the prototype of demyelinating disease, but recently, it has been shown that the existence of axonal lesions contribute to irreversible central nervous system damage in this disease. Tau proteins are considered to be important for maintaining the stability of axonal microtubules involved in the mediation of fast axonal transport of synaptic constituents. There have been reports of increased cerebrospinal fluid (CSF) tau concentrations in patients with MS, and it has been suggested that this could be a marker of axonal damage. The objective of the present study was to elucidate whether CSF tau levels could be a marker of MS activity. PATIENT AND METHODS: We measured tau concentrations in the CSF of 20 patients with MS (nine in the first, seven in the second, one in the fourth exacerbation, and three patients with chronic progressive course) and 32 age- and sex-matched controls, using a specific enzyme-linked immunosorbent assay method. RESULTS: The CSF tau concentrations of patients with MS did not differ from those of controls, and they were not correlated with age at onset and duration of the disease. CONCLUSION: CSF tau concentrations are not a marker of MS activity.
Subject(s)
Multiple Sclerosis/cerebrospinal fluid , Multiple Sclerosis/physiopathology , tau Proteins/cerebrospinal fluid , Adult , Age of Onset , Axons/physiology , Biomarkers/cerebrospinal fluid , Enzyme-Linked Immunosorbent Assay , Female , Humans , Male , Middle Aged , Risk Factors , Severity of Illness Index , Spinal Puncture , Time FactorsABSTRACT
The purpose of the present study was to compare serum levels of coenzyme Q(10) (CoQ(10)) and the coenzyme Q(10) cholesterol (CoQ(10)/cholesterol) ratio in 18 patients with Lewy body disease (LBD) with 20 matched controls. The mean serum coenzyme Q10 levels in patients with LBD were significantly reduced with respect to control group, however, no differences were found in CoQ(10)/cholesterol ratio between LBD patients and control group. There was no correlation among CoQ(10) and CoQ(10)/cholesterol ratio with age, age of onset, body mass index, duration of the disease or scores of the Mini Mental State Examination, UPDRS and Hoehn and Yahr stage. These results suggest the involvement of this enzimatic system in the pathogenic mechanism of LBD.
Subject(s)
Lewy Body Disease/blood , Ubiquinone/analogs & derivatives , Ubiquinone/blood , Age Factors , Age of Onset , Aged , Apoptosis/physiology , Body Mass Index , Cholesterol/blood , Coenzymes , Cytochrome c Group/metabolism , Down-Regulation/physiology , Female , Humans , Lewy Body Disease/physiopathology , Lewy Body Disease/psychology , Male , Nerve Tissue Proteins/blood , Nerve Tissue Proteins/metabolism , Neuropsychological Tests , Oxidative Stress/physiology , SynucleinsABSTRACT
Thiamine is an essential cofactor for several important enzymes involved in brain oxidative metabolism, such as the alpha-ketoglutarate dehydrogenase complex (KGDHC), pyruvate-dehydrogenase complex (PDHC), and transketolase. Some investigators reported decreased thiamine-diphosphate levels and decreased activities of KGDHC, pyruvate-dehydrogenase complex and transketolase in the brain tissue of Alzheimer's disease (AD) patients. We measured cerebrospinal (CSF) levels of thiamine-diphosphate, thiamine-monophosphate, free thiamine, and total thiamine, using ion-pair reversed phase high performance liquid chromatography, in 33 patients with sporadic AD and 32 matched controls. The mean CSF levels of thiamine-derivatives did not differ significantly from those of controls, while the mean plasma levels of thiamine-diphosphate, free and total thiamine were significantly lower in the AD-patient group. CSF and plasma thiamine levels were not correlated with age, age at onset, duration of the disease, and scores of the MiniMental State Examination, with the exception of plasma thiamine-diphosphate with MiniMental State Examination (r = 0.41, p < 0.05) in the AD-patients group. CSF and plasma values did not predict dementia progression, assessed with the MiniMental State Examination scores. These results suggest that CSF thiamine levels are not related with the risk for and the progression of AD.
Subject(s)
Alzheimer Disease/cerebrospinal fluid , Thiamine/cerebrospinal fluid , Aged , Aged, 80 and over , Alzheimer Disease/blood , Alzheimer Disease/psychology , Chromatography, High Pressure Liquid/methods , Disease Progression , Female , Humans , Male , Psychiatric Status Rating Scales , Reference Values , Risk Factors , Thiamine/blood , Thiamine Monophosphate/cerebrospinal fluid , Thiamine Pyrophosphate/bloodABSTRACT
To elucidate whether serum coenzyme Q10 levels are related with the risk for amyotrophic lateral sclerosis (ALS), we compared serum levels of coenzyme Q10 and the coenzyme Q10/cholesterol ratio, in 30 patients with ALS and 42 matched controls using a high performance liquid chromatography technique. The mean serum coenzyme Q10 levels and the coenzyme Q10/cholesterol ratio did not differ significantly between the 2 study groups. These values were not influenced by the clinical form (spinal vs. bulbar) of ALS, and they did not correlate with age, age at onset, and duration of the disease. These results suggest that serum coenzyme Q10 concentrations are unrelated with the risk for ALS.
Subject(s)
Amyotrophic Lateral Sclerosis/blood , Ubiquinone/blood , Age Factors , Age of Onset , Aged , Amyotrophic Lateral Sclerosis/epidemiology , Antioxidants/metabolism , Coenzymes , Female , Humans , Male , Middle Aged , Risk Factors , Ubiquinone/analogs & derivativesABSTRACT
We compared serum levels of coenzyme Q10 and the coenzyme Q10/cholesterol ratio in 33 patients with Parkinson's disease (PD) and 31 matched controls. The mean serum coenzyme Q10 levels did not differ significantly between the 2 study groups. Coenzyme Q10 levels were not correlated with age, age at onset, duration of the disease, scores of the Unified Parkinson Disease Rating Scale (UPDRS) or the Hoehn and Yahr staging in the PD group. The coenzyme Q10/cholesterol ratio had a significant correlation (although low) with duration of the disease (r = -0.46), total UPDRS score (r = -0.39), motor examination of the UPDRS (r = 0.45). These values were not influenced significantly by therapy with levodopa or dopamine agonists. The normality of serum coenzyme Q10 and coenzyme Q10/cholesterol ratio suggest that these values are not related with the risk for PD.
Subject(s)
Parkinson Disease/blood , Parkinson Disease/enzymology , Ubiquinone/analogs & derivatives , Age of Onset , Aged , Cholesterol/blood , Coenzymes , Female , Humans , Male , Mitochondria/enzymology , Oxidative Stress/physiology , Parkinson Disease/physiopathology , Risk Factors , Time Factors , Ubiquinone/bloodABSTRACT
We compared serum levels of coenzyme Q10 and the coenzyme Q10/cholesterol ratio in 44 patients with Alzheimer's disease (AD), 17 patients with vascular dementia (VD), and 21 matched controls. The mean serum coenzyme Q10 and cholesterol levels and the coenzyme Q10/cholesterol ratio of patients with AD or VD did not differ significantly from those of controls. Coenzyme Q10 levels and coenzyme Q10/cholesterol ratio of AD or VD patients were not correlated with age, age at onset, duration of the disease or scores of the MiniMental State Examination. These results suggest that these values are not related with the risk for AD or VD.
Subject(s)
Alzheimer Disease/blood , Alzheimer Disease/enzymology , Ubiquinone/analogs & derivatives , Aged , Alzheimer Disease/physiopathology , Cholesterol/blood , Coenzymes , Dementia, Vascular/blood , Dementia, Vascular/enzymology , Dementia, Vascular/physiopathology , Female , Humans , Male , Oxidative Stress/physiology , Risk Factors , Ubiquinone/bloodSubject(s)
Carotenoids/blood , Multiple Sclerosis/blood , Vitamin A/blood , beta Carotene/blood , Adult , Female , Humans , MaleABSTRACT
To elucidate whether serum coenzyme Q10 levels are related with the risk for multiple sclerosis (MS) or are a marker for the activity of the disease, we compared serum levels of coenzyme Q10 and the coenzyme Q10/cholesterol ratio, in 31 patients with MS (during exacerbations) and 19 matched controls using a high performance liquid chromatography technique. The mean serum coenzyme Q10 levels and the coenzyme Q10/cholesterol ratio did not differ significantly between the 2 study groups. The values did not correlate with age, age at onset, and duration of the disease. These results suggest that serum coenzyme Q10 concentrations are unrelated with the risk for MS and are not a useful marker of activity of the disease.
Subject(s)
Multiple Sclerosis/blood , Ubiquinone/blood , Adult , Biomarkers/blood , Cholesterol/blood , Chromatography, High Pressure Liquid/methods , Disease Progression , Female , Humans , Lipid Peroxidation/physiology , MaleABSTRACT
We compared CSF levels insulin, measured by a Radioimmunoanalysis method, in 24 patients with Parkinson's disease (PD) and 21 matched controls. The CSF insulin levels did not differ significantly between PD patients and controls. CSF insulin levels were not correlated with age, age at onset, duration of the disease, scores of the Unified Parkinson Disease Rating Scale of the Hoehn and Yahr staging in the PD group. Antiparkinsonian therapy did not influence significantly and CSF levels of insulin. These results suggest that CSF insulin concentrations are not a biological marker of PD and its severity.
Subject(s)
Insulin/cerebrospinal fluid , Parkinson Disease/cerebrospinal fluid , Aged , Analysis of Variance , Antiparkinson Agents/therapeutic use , Biomarkers/cerebrospinal fluid , Case-Control Studies , Dopamine Agonists/therapeutic use , Female , Humans , Levodopa/therapeutic use , Male , Middle Aged , Selegiline/therapeutic useABSTRACT
We studied respiratory chain enzyme activities in spermatozoa homogenates from 12 untreated Parkinson's disease (PD) male patients and from 23 age matched healthy male controls. When compared with controls, PD patients showed significantly lower specific activities for complexes I+ III, II+III, and IV. However, citrate synthase corrected activities were similar in patients and controls. Values for enzyme activities in the PD group did not correlate with age at onset, duration, scores of the Unified Parkinson's Disease Rating Scales and Hoehn and Yahr staging. These results suggest that this tissue cannot be used to develop a diagnostic test for PD.
Subject(s)
Citrate (si)-Synthase/metabolism , Clinical Enzyme Tests/methods , Parkinson Disease/diagnosis , Spermatozoa/enzymology , Aged , Case-Control Studies , Electron Transport/physiology , Humans , Male , Middle AgedABSTRACT
INTRODUCTION: Several studies suggested a role of 'oxidative stress' (increased production of prooxidants, antioxidants deficiencies or both) in the pathogenesis of Parkinson's disease. In this study we have measured the serum levels of a number of prooxidant and antioxidant substances to evaluate their possible relation with the risk for Parkinson's disease. PATIENTS AND METHODS: We assessed the serum levels of iron, ferritin, ansferrin, ceruloplasmine, vitamin A, alpha-carotene, beta-carotene, and alpha-tocopherol, in 28 patients with Parkinson's disease and 85 matched controls. All of them were recruited from a population study. RESULTS: None of the values studied differed significantly between the two study groups, and none of them were correlated with age at onset, duration of the disease, scores of the Unified Parkinson Disease Rating Scale or the Hoehn and Yahr staging in the Parkinson's disease group. CONCLUSIONS: These results confirm the previous findings of classic case-control studies, suggesting the absence of relationship of the studied values with the risk for Parkinson's disease.
Subject(s)
Antioxidants/analysis , Oxidants/blood , Parkinson Disease/epidemiology , Age of Onset , Aged , Carotenoids/blood , Ceruloplasmin/analysis , Female , Ferritins/blood , Humans , Iron/blood , Male , Oxidative Stress , Parkinson Disease/blood , Prevalence , Risk , Severity of Illness Index , Spain/epidemiology , Transferrin/analysis , Vitamin A/blood , Vitamin E/blood , beta Carotene/bloodABSTRACT
Thiamine is an essential cofactor for several important enzymes involved in brain oxidative metabolism, such as the alpha-ketoglutarate dehydrogenase complex (KGDHC), pyruvate-dehydrogenase complex, and transketolase. The activity of KGDHC is decreased in the substantia nigra or patients with Parkinson's disease (PD). We measured cerebrospinal (CSF) levels of thiamine-diphosphate, thiamine-monophosphate, free thiamine, and total thiamine, using ion-pair reversed phase high performance liquid chromatography, in 24 PD patients and 40 matched controls. The mean CSF levels of thiamine-derivatives did not differ significantly from those of controls, with the exception of lower CSF free thiamine levels in the PD-patient group. PD patients under levodopa therapy had significantly higher CSF thiaminediphosphate and total thiamine than those not treated with this drug. CSF thiamine levels were not correlated with age, age at onset, duration of the disease, scores of the Unified Parkinson Disease Rating Scale of the Hoehn and Yahr staging in the PD group. These results suggest that low CSF free thiamine levels could be related with the risk for PD.
Subject(s)
Parkinson Disease/cerebrospinal fluid , Thiamine/cerebrospinal fluid , Antiparkinson Agents/therapeutic use , Dopamine Agonists/therapeutic use , Female , Humans , Levodopa/therapeutic use , Male , Middle Aged , Parkinson Disease/drug therapy , Reference Values , Selegiline/therapeutic use , Thiamine Monophosphate/cerebrospinal fluid , Thiamine Pyrophosphate/cerebrospinal fluidABSTRACT
We compared CSF and serum selenium levels, measured by atomic absorption spectrophotometry, in 27 patients with Alzheimer's disease (AD) (13 females, 14 males, mean +/- SD age 73.6 +/- 7.4 years) without major clinical signs of undernutrition, and 34 matched controls (18 females, 16 males, mean +/- SD age 70.7 +/- 7.8 years). CSF and serum selenium levels did not differ significantly between AD-patient (11.4 +/- 7.8 ng/ml and 28.5 +/- 13.0 ng/ml, respectively) and control groups (13.3 +/- 7.0 ng/ml and 22.5 +/- 17.5 ng/ml). These values were not correlated with age, age at onset, duration of the disease, and scores of the MiniMental State Examination in the AD group. Weight and body mass index were significantly lower in AD patients than in controls. These results suggest that CSF selenium concentrations are apparently unrelated with the reported oxidative stress processes in patients with AD.
Subject(s)
Alzheimer Disease/cerebrospinal fluid , Selenium/cerebrospinal fluid , Aged , Aged, 80 and over , Alzheimer Disease/blood , Female , Humans , Male , Osmolar Concentration , Reference Values , Spectrophotometry, Atomic , Vitamin A/bloodABSTRACT
The most common mutation in muscle carnitine palmitoyltransferase II (CPT II) deficiency is a missense mutation that replaces a leucine for a serine residue at amino acid position 113 of the CPT II protein (S113L). We performed molecular analysis in a group of 14 Spanish patients with CPT II deficiency from ten unrelated families. The S113L mutation was observed in 8 of the 14 patients studied. Seven patients were homozygous for the mutation, 1 patient was heterozygous, and 6 patients did not carry the mutation on either allele. Seven healthy relatives belonging to three different families carried the mutation on one allele. One patient carried the missense mutation that replaces a tyrosine for a serine at amino acid position 628 on one allele. Our data indicate that the S113L is also the most common mutation in Spanish patients with CPT II deficiency in muscle, and that further pathogenic mutations remain to be identified.
Subject(s)
Carnitine O-Palmitoyltransferase/deficiency , Muscles/enzymology , Carnitine O-Palmitoyltransferase/genetics , Female , Heterozygote , Homozygote , Humans , Male , Mutation, Missense , SpainABSTRACT
To elucidate the possible role of carotenoids and vitamin A as risk factors for Alzheimer's disease (AD), we compared serum levels of beta-carotene and alpha-carotene, and vitamin A, measured by isocratic high performance liquid chromatography, of 38 AD patients and 42 controls. The serum levels of alpha-carotene did not differ significantly between AD patients and control groups. However, the serum levels of beta-carotene and vitamin A were significantly lower in the AD-patient group. These values did not correlate to age, age at onset or score on the MiniMental State Examination. Weight and body mass index were significantly lower in AD patients than in controls. These results suggest that low serum beta-carotene concentrations in AD patients could be related to a deficiency in dietary intake of this provitamin, although its possible relationship with risk for AD could not be excluded.
Subject(s)
Alzheimer Disease/blood , Antioxidants/metabolism , Carotenoids/blood , Vitamin A/blood , beta Carotene/blood , Aged , Chromatography, High Pressure Liquid , Female , Humans , Male , Reference Values , Risk FactorsABSTRACT
To elucidate whether serum alpha and beta-carotene and retinol levels are related with the risk for amyotrophic lateral sclerosis (ALS), we compared serum levels of alpha-carotene, beta-carotene, and retinol (vitamin A), measured by HPLC, in 40 patients with amyotrophic lateral sclerosis (ALS) and 87 matched controls using an isocratic high performance liquid chromatography technique. The mean serum alpha and beta-carotene, and retinol levels did not differ significantly between the 2 study groups. These values were not influenced by the clinical form (spinal vs bulbar) of ALS, and they did not correlate with age, age at onset, and duration of the disease. These results suggest that serum alpha and beta-carotene and retinol concentrations are unrelated with the risk for ALS.
Subject(s)
Amyotrophic Lateral Sclerosis/physiopathology , Antioxidants/analysis , Carotenoids/blood , Vitamin A/blood , beta Carotene/blood , Adult , Aged , Case-Control Studies , Chromatography, High Pressure Liquid , Female , Humans , Male , Middle Aged , Risk FactorsABSTRACT
It has been suggested that nitric oxide (NO) could be implicated in the pathogenesis of multiple sclerosis (MS). Recently, two groups reported increased cerebrospinal fluid (CSF) nitrate levels (oxidation product that provides an indirect estimation of NO) in MS patients. However, another group did not confirm these findings. We studied the CSF and plasma levels of nitrate with a kinetic cadmium reduction method in 11 MS patients and 25 matched controls. The CSF nitrate levels and the CSF/plasma nitrate ratio did not differ significantly between the two study groups. Plasma nitrate levels were nearly significantly lower in MS patients. CSF and plasma nitrate levels did not correlate with age at onset and duration of the disease in the patient group. These data suggest that measurement of CSF levels of nitrate is not a marker of the activity of MS.
