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  • 1
    ISSN: 1432-1459
    Keywords: Cytochrome-C-oxidase deficiency ; Mitochondrial myopathy ; Floppy infant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Ein 4 Monate altes Mädchen litt seit Geburt an einer Muskelhypotonie verbunden mit einer Kardiomyopathie, an der es im Alter von 8 Monaten starb. Eine Muskelbiopsy zeigte normale Muskelfasern und Mitochondrien und eine Muskelhypotrophie Typ II. Dies sprach in einer Übereinstimmung mit den klinischen und elektrophysiologischen Befunden für eine suprasegmentale Läsion. Cytochrome-C-Oxidase war das einzige Enzym der Atmungskette, welches im Muskel hochgradig vermindert war. Es war hingegen normal im Gehirngewebe, im Herz und in der Fibroblasten-Kultur. Es wird daraus gefolgert, daß ein Mangel an Cytochrome-C-Oxidase nicht immer mit morphologisch faßbaren Anomalien der Mitochondrien vergesellschaftet ist und daß sie nicht immer eine primäre Muskelerkrankung darstellt.
    Notes: Summary A 4-month-old girl had hypotonia, muscle weakness and cardiomyopathy at birth and died at the age of 8 months from heart failure. Muscle biopsy showed normal muscle fibers, normal mitochondria and type II hypotrophy, in agreement with clinical and neurophysiological signs consistent with a suprasegmental lesion. Cytochrome-C-oxidase was the only respiratory chain enzyme that was profoundly decreased in the patient's muscle, but not in her brain, heart and cultured fibroblasts. We suggest that cytochrome-C-oxidase deficiency in skeletal muscle is not always associated with mitochondrial abnormalities and may not always indicate primary muscle pathology.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 76 (1981), S. 341-349 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Optically bright and very cool AFGL carbon stars have been analyzed in order to find a common evolutionary sequence according to indications in this sense derived from papers which have treated only the first or the second group of stars separately. An apparent discrepancy existing between the stellar parameters has been overcome following an inverse procedure which provides these values by means of the shell parameters. The results seem to indicate that AFGL stars, whose variability nature is still unknown, should be Mira or Mira-like according to the values of their dust shell temperatures. Dust shell masses have been estimated for both samples of stars finding an inverse dependence with the effective temperature,M d ∼T * −9.1 . This may be interpreted in terms of evolutionary sequence in the sense that the cooler the stars the larger their shell masses.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 76 (1981), S. 513-513 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 72 (1980), S. 159-165 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A comparison between theGeneral Catalogue of Cool Carbon Stars (CCS) and theAFGL Catalogue has been performed. Eighty-five stars have been found in common between the two lists. Eighty-four stars which were present in Baumert's comparison between CCS and the 2 μ Sky Survey have no counterpart in the AFGL. Four new tentative identifications are given. The analysis of the two colours diagrams K-[4.2 μ] vs. I-K and I-[4.2 μ] vs. [4.2 μ]-[11 μ] led to the conclusion that all the infrared emission from the sources seems to come from a single circumstellar shell.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 79 (1981), S. 435-441 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Seventeen unidentified sources contained in the 2μ IR Catalogue, and AFGL-AFGLS Catalogues have been tentatively indicated as S stars from a comparison with the General Catalogue of S stars. An analysis based on the I-K and K-[4.2μ] behavior has been performed for all the sources which have been found to be in common with all the above mentioned catalogues. The results lead to the conclusion that the presence of circumstellar shells seems to be very unlike for these objects in spite of their evolutionary status which is intermediate between M and C type stars.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 73 (1980), S. 379-387 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A comparison between model atmosphere grids with and without metal blanketing has been performed in the low-temperature range (T eff=6000 K to 10000 K) and for different metal contents (logA=0, −1, −2;A=scaled solar abundance). ForA≤10−1 andT eff≥7000 K, the Johnson colour indicesU-B andB-V, together with the Strömgrenu-b, b-y and the bolometric correction (BC) are little affected by metal blanketing (Δ mag〈0 . m 04). On the other hand, the trend of the physical quantities and them 1 andc 1 colour indices reflect the inadequateness of the models even withA=10−2 andT eff=9500 K, where hydrogen line blanketing is expected to dominate. This fact discourages once and for all the use of metal unblanketed atmospheres other than for comparison of colour indices or the calculation of bolometric corrections for Population II A-F spectral types.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Neurological sciences 3 (1982), S. 237-240 
    ISSN: 1590-3478
    Keywords: Brainstem auditory evoked potentials ; BAEPs ; Wallenberg syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario È stato possibile registrare i BAEPs ed eseguire un dettagliato studio anatomo-patologico del tronco encefalico in un paziente affetto da s. di Wallenberg, il quale è deceduto poco dopo il ricovero per complicanze extraneurologiche. Dal lato affetto i BAEPs sono risultati alterati senza però indicare una esatta localizzazione della lesione. L'esame istologico ha evidenziato un infarto della porzione dorsolaterale destra del bulbo. Un esame particolareggiato delle vie acustiche troncoencefaliche ne ha dimostrato l'integrità anatomica. Quanto rilevato conferma l'incertezza che tuttora esiste sulla natura e localizzazione dei generatori di alcune delle componenti del BAEP. Si rileva, inoltre, che anomalie dei BAEPs possono essere riscontrate anche in assenza di un persistente danno anatomico delle vie acustiche troncoencefaliche.
    Notes: Abstract BAEPs were recorded in a 70-year-old man who had developed symptoms indicative of Wallenberg syndrome. He died, of extracerebral causes, shortly after hospitalization and an autopsy study was done on the brainstem lesions. Right ear stimulation disclosed BAEP abnormalities, but gave no indication of the level of the ischemic disorder. Histopathological examination showed a typical right dorsolateral medullary infarct. A detailed study of the acoustic pathways demonstrated their anatomical integrity. These findings confirm the uncertainty that still exists as to the exact location and type of generators of BAEP components. They suggest, moreover, that BAEPs can give objective evidence of functional impairment of brainstem acoustic structures even in the absence of persistent anatomical damage.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1590-3478
    Keywords: gynecomastia ; anticonvulsant drugs ; phenobarbital ; phenytoin ; fluoresone ; drug-induced ; hyperprolactinemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario Una ginecomastia insorta in due epilettici viene riportata. Il quadro si è sviluppato alcuni mesi dopo che ad un precedente trattamento con PB e PHT si era aggiunto fluoresone alla dose di 750 mg/die per os. Le comuni malattie sistemiche che possono determinare una ginecomastia sono state escluse. I rilievi ormonali hanno evidenziato soltanto in un caso un'iperprolattinemia ed un aumento del rapporto estrogeni-androgeni circolanti. La relazione temporale fra somministrazione del fluoresone e comparsa del quadro appare cruciate, tuttavia il meccanismo patogenetico resta da chiarire.
    Notes: Abstract Gynecomastia developed in two epileptic patients some months after the addition of oral fluoresone 750 mg daily to the phenobarbital and phenytoin already being administered. The common systemic diseases that may give rise to gynecomastia were excluded. One of the patients presented hyperprolactinemia and a raised estrogen/androgen ratio but the hormone levels were not raised in the other. The onset of symptoms after fluoresone in both cases is highly suggestive, although the pathogenetic mechanism is not clear.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Neurological sciences 5 (1984), S. 447-450 
    ISSN: 1590-3478
    Keywords: Hemorrhagic shock ; focal motor seizures ; periodic EEG pattern
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario Viene riportato il caso di uno shock emorragico con un quadro EEG caratterizzato da scariche pseudoperiodiche parossistiche lateralizzate, ripetute crisi motorie focali sul lato opposto delle prevalenti anormalità EEG e turbe della coscienza in assenza di una lesione cerebrale documentata. Il caso era quello di una donna di 45 anni senza precedenti personali o familiari di epilessia. Questo aspetto unusuale del quadro elettroclinico appare poco spiegabile in quanto intervenuto parecchi giorni dopo lo shock emorragico quando tutti i dati di laboratorio erano ritornati nella norma. L'unica spiegazione di questo quadro sembra essere l'ipossia cerebrale e il disordine metabolico conseguente allo shock emorragico.
    Notes: Abstract We report a case of hemorrhagic shock associated with an EEG pattern resembling pseudoperiodic lateralized paroxysmal discharges, repeated focal motor seizures on the opposite side of the prevalent EEG abnormalities and consciousness disturbances in the absence of a demonstrable cerebral lesion occurring in a 45 year-old woman without a personal or familial history of epilepsy. This unusual electroclinical picture appeared inexplicably several days after the hemorrhagic shock when the laboratory data had already normalized. The only cause of this picture seemed to be brain hypoxia and the metabolic disorders consequent upon hemorrhagic shock.
    Type of Medium: Electronic Resource
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