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  • 1
    ISSN: 1432-1076
    Keywords: Multiple sulfatase deficiencies ; Cultured skin fibroblasts ; 35S-sulfatide ; 35S-mucopolysaccharide ; 14C-cholesterol sulfate degradation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Skin fibroblasts from a Japanese patient with multiple sulfatase deficiency (MSD) (Mucosulfatidosis) were studied with regard to metabolism of various sulfated compounds in vivo. Several sulfatase activities (arylsulfatases A,B and C, cholesterol sulfatase, heparin N-sulfatase) were deficient in skin fibroblasts grown in F-10 CO2 medium. The accumulation and degradation of 35S-sulfatide, 35S-mucopolysaccharides, 14C-cholesterol sulfate by MSD cells were also studied, comparing them to control, Hunter and metachromatic leukodystrophy cells. MSD fibroblasts accumulated and failed to degrade these compounds in vivo. Cholesterol sulfate was also incorporated into the control and pathological cells, and MSD cells were unable to hydrolyze cholesterol sulfate, though cholesterol sulfate is known to be hydrolyzed in the non-lysosomal subfraction. From these data it is clear that multiple enzyme deficiencies in MSD fibroblasts can be demonstrated in vivo.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1440
    Keywords: a1-antitrypsin ; pulmonary emphysema ; liver cirrhosis ; infancy ; nasal and lacrimal secretion ; a1-Antitrypsin ; Lungenemphysem ; Lebercirrhose ; Kleinkindesalter ; Tränen- und Nasensekret
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei einer jetzt 3 1/2 jährigen Patientin wird erstmals über das gemeinsame Auftreten von Lungenemphysem und biliärer Lebercirrhose bei homozygotem a1-Antitrypsinmangel (Typ ZZ) schon im frühen Kindesalter berichtet. Unter den 12 untersuchten Blutsverwandten der Eltern- und Großelterngeneration fanden sich 7 Heterozygote (MZ) und 5 Gesunde (MM). Die Genotypbestimmung korrelierte vollständig mit den Werten der Trypsinhemmkapazität im Serum, weniger gut jedoch mit den a1-Antitrypsinkonzentrationen. Bei 4 Heterozygoten fanden sich von der Norm abweichende Lungenfunktionsproben. In den Tränen aller Probanden war hohe Antiproteasenaktivität vorhanden, die jedoch immunologisch nicht mit dem a1-Antitrypsin des Serums identisch war. Auch die Antiproteasenaktivität des Nasensekretes spiegelt nicht die genetisch determinierten unterschiedlichen Serumkonzentrationen von a1-Antitrypsin wider.
    Notes: Summary The combination of pulmonary emphysema and liver cirrhosis in early childhood is documented for the first time in a 3 1/2 year old girl with homozygous (ZZ) deficiency of a1-antitrypsin. Examination of relatives in the generation of parents and grand parents revealed 7 heterozygous (MZ) and five normal members (MM). Lung function tests showed altered respiratory function in 4 out of these 7 heterozygous subjects. Measurement of trypsin inhibitory capacity in plasma gave a good correlation to the genotype, however determination of a1-antitrypsin coincided with it to a lesser degree. A high trypsin inhibitory capacity was detected in the tears of the propositi, which was shown to be immunologically distinguishable from serum a1-antitrypsin. Similarly, antiprotease activity was demonstrated in nasal secretions. This too did not reflect the serum profile.
    Type of Medium: Electronic Resource
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