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  • 1
    Electronic Resource
    Electronic Resource
    Presence of T-cell subset abnormalities in newly diagnosed cases of multiple sclerosis and relationship with short-term clinical activity (1993)
    Springer
    Journal of neurology 240 (1993), S. 79-82 
    Details
    ISSN: 1432-1459
    Keywords: Multiple sclerosis ; T-cell subsets
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Abnormalities of T-cell subsets in patients with multiple sclerosis are well known; in order to assess whether immunological abnormalities are relevant in the pathogenesis of the disease after its clinical onset, peripheral blood lymphocyte subsets (CD3+, CD4+, CD4+ CD45RA+, CD4+CD45RA−, CD8+, CD8+CD57+, CD57+, CD25+) were analysed serially in 25 patients at the first clinical episode suggestive of inflammatory demyelinating disease and in an equal number of age- and sex-matched controls. During the follow-up period (12–18 months, mean 14) 6 of 25 patients presented new relapses: in this subgroup of patients, significant changes in CD4+ ratio (% CD4+CD45RA−/%CD4+CD45RA−) were detected in comparison both with healthy controls and with clinically stable patients. Patients clinically stable at follow-up did not display immunological abnormalities, regardless of the presence or absence of cerebrospinal fluid and/or magnetic resonance imaging alterations consistent with multiple sclerosis. These findings suggest a possible prognostic role of early T-cell subset imbalance in multiple sclerosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00858721
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  • 2
    Electronic Resource
    Electronic Resource
    Clinical and biochemical evidence of skeletal muscle involvement in galactose-1-phosphate uridyl transferase deficiency (1993)
    Springer
    Journal of neurology 240 (1993), S. 272-277 
    Details
    ISSN: 1432-1459
    Keywords: Galactose-1-phosphate uridyl transferase deficiency ; Myopathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An 8-year-old boy with galactose-1-phosphate uridyl transferase (GALT) deficiency presented with hypotonia, muscle hypotrophy, hepatomegaly, bilateral cataract and mild mental retardation. Two brothers showed a GALT activity consistent with a homozygotic condition and both parents were found to be heterozygotes for this defect. Histological and ultrastructural examination of muscle biopsy specimens showed several necrotic fibres. GALT activity was undetectable in skeletal muscle and muscle tissue cultures; myotubes converted galactose to CO2 at a lower rate than controls. Galactose-1-phosphate was increased in the patient's red cells and muscle tissue. GALT deficiency, not previously described in muscle, may be of pathogenic relevance in determining the myopathic features present in GALT deficiency syndrome.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00838160
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  • 3
    Electronic Resource
    Electronic Resource
    Mitochondrial myopathy: correlation between oxidative defect and mitochondrial DNA deletions at single fiber level (1994)
    Springer
    Acta neuropathologica 87 (1994), S. 371-376 
    Details
    ISSN: 1432-0533
    Keywords: Key words: Mitochondrial myopathy – Ragged red fibers – In situ hybridization – Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. In situ hybridization combined with immunohistochemical techniques has been applied to study patients affected by mitochondrial myopathies with large mitochondrial (mt)DNA deletions. All patients' muscle biopsies showed ragged red fibers (RRFs) and cytochrome oxidase (COX) deficiency. Two digoxygenin-labeled, polymerase chain reaction (PCR)-amplified DNAs were used as probes. One probe was designed to hybridize only with wild-type mtDNAs, while the other recognized both wild-type and deleted mtDNAs. Concomitant immunocytochemical analysis using antibodies against subunits II, III (encoded by mtDNA), and IV (encoded by nuclear DNA) of COX was carried out. In our patients deleted mtDNAs are overexpressed in COX-negative RRFs, while wild-type mtDNAs are decreased in the same fibers. Immunohistochemistry studies show that COX IV is overexpressed in RRFs and that COX II and COX III subunits are still present. Deleted mtDNAs are spatially segregated in muscle fibers, where they interfere with the local population of normal mitochondrial genomes, causing a regional deficiency of the mitochondrial respiratory activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00313606
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  • 4
    Electronic Resource
    Electronic Resource
    Neurophysiological study of the effect of combined kidney and pancreas transplantation on diabetic neuropathy: a 2-year follow-up evaluation (1991)
    Springer
    Diabetologia 34 (1991), S. S103 
    Details
    ISSN: 1432-0428
    Keywords: Pancreas transplantation ; Kidney transplantation ; Diabetic neuropathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Previous study have reported a significant improvement of peripheral neuropathy following combined pancreas and kidney transplantation attributed to improvement of blood glucose control by some authors and to elimination of uraemia by others. To asses the specific role of uraemia and hyperglycaemia in neuropathy, 16 diabetic uraemic patients with combined pancreas and kidney transplantation were compared to 9 diabetic patients with a renal graft only. Neurophysiological studies of peripheral neuropathy included ulnar and deep peroneal nerve motor conduction velocity, median and sural nerve sensory conduction velocity were performed at baseline and 1 and 2 years after transplantation. One year after transplantation mean nerve conduction velocity significantly improved in both groups. However, changes were statistically significant in the kidney-pancreas group only. At the 2 year follow-up nerve conduction velocity had increased further in the pancreas-kidney group only. These data suggest that improvement of nerve conduction velocity following pancreas and kidney transplantation is predominantly due to the long-term euglycaemic state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587632
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  • 5
    Electronic Resource
    Electronic Resource
    Acute- and insidious-onset myelopathy of undetermined aetiology: contribution of paraclinical tests to the diagnosis of multiple sclerosis (1990)
    Springer
    Journal of neurology 237 (1990), S. 171-176 
    Details
    ISSN: 1432-1459
    Keywords: Multiple sclerosis ; Myelopathy ; Magnetic resonance imaging ; Evoked potentials
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Brain magnetic resonance imaging (MRI), multimodality evoked potentials (EPs) and cerebrospinal fluid examination were performed in 42 patients with myelopathy of undetermined aetiology in order to detect abnormalities usually related to multiple sclerosis (MS). Patients were divided into three groups: insidious-onset myelopathy with only motor signs (group A; 11 patients), with both motor and sensory signs (group B; 18 patients) and acute-onset myelopathy (group C; 13 patients). Multiple brain MRI lesions were found in 18 patients (2 of group A, 13 of group B and 3 of group C). Another 7 patients had a single white-matter lesion. Visual EPs were abnormal in 21 and brain-stem auditory EPs in 12 patients. Paraclinical tests supported the diagnosis of MS in 25 patients (60%) by showing subclinical brain abnormalities. Oligoclonal bands were found in 16 of these 25 patients. The findings strongly suggest a diagnosis of MS in the patients of group B.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00314590
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Multiple sclerosis and mitochondrial myopathy: An unusual combination of diseases (1994)
    Springer
    Journal of neurology 241 (1994), S. 511-516 
    Details
    ISSN: 1432-1459
    Keywords: Multiple sclerosis ; Mitochondrial DNA (muscle) ; Mitochondrial myopathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A woman with definite multiple sclerosis (MS) and mitochondrial myopathy is described. There were widespread white matter lesions on magnetic resonance imaging (MRI), cerebrospinal fluid (CSF) abnormalities and evoked response changes. Muscle biopsy showed ragged red fibres (RRFs) and cytochrome c oxidase (CoX) deficiency. Southern blot analysis revealed a large deletion of mitochondrial DNA (mtDNA). The patient may be affected by two unrelated diseases, MS and mitochondrial myopathy, but this combination has never previously been reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00919714
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  • 7
    Electronic Resource
    Electronic Resource
    Effects of hyperglycaemia on visual evoked potentials in insulin-dependent diabetic patients (1992)
    Springer
    Acta diabetologica 29 (1992), S. 34-37 
    Details
    ISSN: 1432-5233
    Keywords: Visual evoked potentials ; Hyperglycaemic clamp ; Central nervous conduction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Multimodality evoked potentials frequently reveal subclinical involvement of the central nervous system in patients with insulin-dependent diabetes mellitus. We devised this study to evaluate the possible effects of acute hyperglycaemia on visual evoked potential (VEP) parameters in type 1 diabetic patients. A hyperglycaemic clamp (250 mg/dl for 180 min) was performed in ten patients. Monocular pattern reversal VEPs (check size 15′, contrast 50%) were recorded before, and every 30 min after the start of the clamp. Basal VEP latencies and amplitudes were normal bilaterally in nine patients. No significant changes in pattern reversal and flash VEP parameters were observed after the induction or during the clamp period. None of the neurophysiological parameters evaluated during the test was related to the duration of the disease, the basal VEP latency or amplitude or the presence of retinopathy. Our data suggest that the neurophysiological abnormalities detected in insulin-dependent diabetic patients are due to structural involvement of the central nervous pathways and not to functional damage induced by acute short-term hyperglycaemia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00572827
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Volatile metabolites produced in wine by mixed and sequential cultures of Hanseniaspora guilliermondii or Kloeckera apiculata and Saccharomyces cerevisiae (1993)
    Springer
    Biotechnology letters 15 (1993), S. 235-238 
    Details
    ISSN: 1573-6776
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary Secondary products in wines obtained by pure, mixed and sequential cultures of Saccharomyces cerevisiae, Hanseniaspora guilliermondii or Kloeckera apiculata were studied. Consistent differences in the composition were determined in wines fermented by sequential cultures. When S. cerevisiae was added to musts partially fermented by apiculate yeasts, its metabolism was significantly affected. In particular it synthesized high amounts of n-propanol and metabolized high quantities of acetoin, produced by apiculate yeasts
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00128311
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  • 9
    Electronic Resource
    Electronic Resource
    Token test and multiple sclerosis (1993)
    Springer
    Neurological sciences 14 (1993), S. 333-336 
    Details
    ISSN: 1590-3478
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02339302
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  • 10
    Electronic Resource
    Electronic Resource
    Spectral analysis of heart rate variability signal and respiration in diabetic subjects (1990)
    Springer
    Medical & biological engineering & computing 28 (1990), S. 205-211 
    Details
    ISSN: 1741-0444
    Keywords: Biological signal processing ; Diabetic neuropathy ; Heart rate variability ; Respiration ; Sympathetic and parasympathetic nervous systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract The paper deals with methods of processing ECG and respiration signals which aim at detecting parameters whose values may be correlated to normal and diabetic subjects with or without cardiovascular autonomic neuropathy (CAN). Beatto-beat R-R duration values of the ECG and discrete series of respiration are obtained from original signals using a recognition algorithm. Power spectrum analysis (autospectra, cross-spectra and coherence via autoregressive modelling) is carried out on segments of about 200 consecutive cardiac cycles. Spectral parameters of the R-R variability signal are obtained as follows: total power, power of low-frequency (LF) and high-frequency (HF) components, power of the signal which is (or is not) coherent with respiration, in absolute or in percentage values. The experimental protocol considers 40 diabetic patients (21 of whom have diabetic neuropathy) and 14 normals in three different conditions: resting, standing and controlled respiration. The developed spectral parameters seem sensitive enough to differentiate between normal and pathological subjects. These parameters may constitute a quantitative means to be edded to the classical diabetic tests for the diagnosis of cardiovascular autonomic neuropathy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02442668
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