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  • carnitine palmitoyltransferase  (2)
  • Androstenedione  (1)
  • Ataxia  (1)
Materialart
Erscheinungszeitraum
  • 1
    Digitale Medien
    Digitale Medien
    Amsterdam : Elsevier
    Clinical Biochemistry 20 (1987), S. 1-7 
    ISSN: 0009-9120
    Schlagwort(e): carnitine ; carnitine palmitoyltransferase ; deficiency diseases ; lipids ; metabolism ; myoglobinuria
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Amsterdam : Elsevier
    Clinical Biochemistry 20 (1987), S. 1-7 
    ISSN: 0009-9120
    Schlagwort(e): carnitine ; carnitine palmitoyltransferase ; deficiency diseases ; lipids ; metabolism ; myoglobinuria
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 3
    ISSN: 1432-1459
    Schlagwort(e): Peroneal muscular atrophy ; Ataxia ; Myoclonic epilepsy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Bei zwei Brüdern im Alter von 17 und 11 Jahren fanden sich Pes cavus, fehlende Muskeleigenreflexe, hochgradig gestörte Tiefensensibilität, eine Ataxie, ein Nystagmus, eine Dysarthrie und eine partielle Epilepsie mit myoklonischen Anfällen. Elektromyographisch ließ sich eine hochgradige Verlangsamung der motorischen Erregungsleitung an den unteren Extremitäten mit verlängerter distaler Latenz nachweisen. Eine Biopsie des Nervus peronaeus ergab einen vollständigen Myelinverlust zahlreicher Fasern. Sowohl der Vater wie 7 Onkel väterlicherseits hat einen Pes cavus, Hammerzehen und leichte periphere Sensibilitätsstörungen. Bei 3 von 7 Untersuchten fanden sich eine Verlangsamung der motorischen Erregungsleitung peripherer Nerven. EEG im Bereiche der Norm. Die epileptischen Anfälle manifestierten sich zunächst als Myoklonie der oberen rechten Extremitäten besonders während des Schlafes. Im EEG der beiden Exploranden zeigten sich fokale oder generalisierte epileptische Entladungen. Beim älteren der Brüder trat ein Status partialer motorischer Anfälle mit rechtsseitigen Adversiv-Attacken auf. Er starb plötzlich an einer Bronchopneumonie am 3. Tag des Status epilepticus. Die neuropathologische Untersuchung ergab eine nahezu vollständige Demyelinisierung des Tractus dentatorubralis und eine partielle Degeneration des Gollschen und Burdachschen Tractus im Halsmark. Die Zuordnung dieses Syndromes wird diskutiert und es wird eine autosomal dominante Vererbung mit unvollständiger Penetranz beziehungsweise unterschiedlicher Expressivität angenommen.
    Notizen: Summary Two brothers, 17 and 11 years old, presented with pes cavus, absence of deep tendon reflexes, peripheral vibratory sensory loss, ataxia, tremor, nystagmus, dysarthria and partial myoclonic epilepsy. Electromyography showed severe slowing of motor conduction velocity in the lower extremities and increased distal latencies. A peroneal nerve biopsy showed absence of myelin sheath in most fibres resulting in numerous demyelinated nerve fibres. The father and seven uncles on the paternal side had pes cavus, hammer toes and moderate vibratory peripheral sensory loss. Three of seven siblings had slow motor conduction velocities on EMG. None had EEG abnormalities. Epilepsy started at an early age in both patients with myoclonic jerks of the right arm especially during sleep. EEG recordings were characterized by focal or diffuse epileptiform discharges. In the elder brother a partial motor epileptic status occurred with adversive seizures involving the right side of the body. He died of a broncopneumonia after 3 days of this epileptic status. Histopathological examination showed a severe demyelination of dentato-rubral pathways in the cerebellum and a partial degeneration of Goll and Burdach's tracts in the cervical spinal cord. The nosological classification of this syndrome is discussed and an autosomal dominant inheritance with incomplete penetrance or variable expressivity is suggested.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    ISSN: 1590-3478
    Schlagwort(e): Gonadotropins ; Testosterone ; Dihydrotestosterone ; Androstenedione ; Hypogonadism ; Male ; Myotonic dystrophy ; Impotence
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Sommario Allo scopo di studiare in maniera completa l'ipogonadismo ipergonadotropo maschile nella distrofia miotonica e di valutarne le eventuali conseguenze sull'atrofia muscolare e sulla sessualità, sono stati determinati con metodo RIA o IRMA in 29 pazienti affetti da distrofia miotonica e in 34 soggetti sani: LH, FSH, prolattina, testosterone totale (T) e libero (FT), estradiolo (E), diidrotestosterone (DHT), SHBG, androstenedione (A), 17-OH-Progesterone. Le medie ± deviazione standard di questi ormoni sono risultati: LH=8.0±4.4 mIU/ml, FSH=17.4±11.5 mIU/ml, A=2.0±1.3 ng/ml, tutti più elevati dei controlli. T=406±290 ng/dl; FT=22.7±7.0 pg/ml, DHT 55.5±29.7 ng/dl tutti più bassi dei controlli. Il riscontro di bassi valori di FT e DHT, non studiati prima d'ora in questi soggetti, conferma e rende più evidente il deficit androgenico. L'elevato livello di A con T basso dimostra un deficit dell'enzima 17-deidrogenasi. La durata della malattia correla significativamente sia con il tasso di T (r−0.56) che di FT (r−0.59) e quindi l'ipogonadismo tende ad aggravarsi progressivamente. Dividendo i nostri pazienti in tre gruppi (A, B, C) in base alla gravità del danno muscolare i livelli di LH e FSH erano più elevati (rispettivamente 9.3±4.7 and 20.6±12.3 mIU/ml vs 4.8±0.9 and 8.4±3.8, p〈0.03) e T più basso (rispettivamente 337.3±263.4 ng/dl vs 649.7±320.3, p〈0.03) nelle forme più gravi (gruppo A). Tuttavia tra i tre gruppi non sono state riscontrate variazioni del FT e quindi è poco probabile una influenza dell'ipogonadismo sulla atrofia muscolare. Circa il 25% dei pazienti lamentava impotenza sessuale. Questi soggetti avevano livelli di FSH e LH più elevati (p〈0.001) e di testosterone libero più bassi (p〈0.03) rispetto a chi aveva normale sessualità. Tuttavia l'ipogonadismo potrebbe non essere la sola causa dell'impotenza. Gli impotenti appartenevano tutti al gruppo C ed avevano una espansione della tripletta CTG molto alta. È possibile che anche l'ipogonadismo e il deficit sessuale siano legati ad alterazioni di tessuto muscolare: le cellule miodi peritubulari del testicolo e la muscolatura liscia dei corpi cavernosi.
    Notizen: Abstract In order to study male hypergonadotropic hypogonadism as completely as possible, and to evaluate its possible effects on muscle atrophy and sexuality, RIA or IRMA methods were used to measure the levels of luteinizing hormone (LH), follicle stimulating hormone (FSH), prolactin, total (T) and free (FT) testosterone, estradiol (E), dihydrotestosterone (DHT), sex hormone binding globulin (SHBG), androstenedione (A) and 17-OH-progesterone (17-OH-P) in 29 patients with myotonic dystrophy (MD). The mean hormonal levels ±SD were: LH 8.0±4.4 mIU/ml, FSH 17.4±11.5 mIU/ml, A 200±130 ng/dl (all higher than in controls); T 406±290 ng/dl, FT 22.7±7.0 pg/ml, DHT 55.5±29.7 ng/ml (all lower than in controls). The low FT and DHT levels (never previously studied in MD) confirm the androgenic deficiency. The high androstenedione levels and low testosterone concentrations suggest defective enzyme 17-dehydrogenase. The duration of the disease correlated with both testosterone (r=−0.56) and FT levels (r=−0.59), showing that hypogonadism tends to worsen progressively. When the patients were divided into three groups on the basis of the severity of muscle involvement (A, B and C), LH and FSH levels were higher in group C (more severe disease) than in group A, respectively 9.3±4.7 and 20.6±12.3 mIU/ml versus 4.8±0.9 and 8.4±3.8, p〈0.03; T levels were lower in group C than in group A, 337.3±263.4 ng/dl versus 649.7±320.3 (p〈0.03); however, there was no significant difference in the FT levels of the three groups, which may imply that hypogonadism is unlikely to have a direct effect on muscle atrophy. About 25% of our patients were impotent; these subjects had higher LH and FSH (p〈0.001) and lower FT levels than the patients who were not impotent (p〈0.03). However, hypogonadism may not be the only cause of impotence as all of the impotent patients belonged to group C and had a very high (CTG)n triplet expansion. We hypothesise that hypogonadism and sexual impairment could be partially due to a muscle cell alteration: i.e. a dysfunction of both the testicular peritubular myoid cells and of the corpus cavernosum smooth muscle.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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