0000000000202841
AUTHOR
Lia Eckes
Psoriasis vulgaris and genetic markers
In a sample of n = 160 nonrelated male and female patients suffering from psoriasis Vulgaris, blood serum protein, and enzyme group typings have been carried out and compared with healthy controls from the same area (Rheinland-Pfalz). Marked statistically significant differences between patients and controls were found in none of the genetic blood polymorphisms considered here. However, combining previously published data from various authors with our own, significant associations between this skin disease and genetic polymorphisms such as MN, Gc, Gm (2), red cell acid phosphatase, and red cell phosphoglucomutase (PGM1) were seen. The possible reasons for these associations are discussed.
On the genetics of psoriasis
To elucidate the mode of inheritance in psoriasis, Falconer's model for estimating heritability which is under the assumption of multifactorial inheritance, was applied to the data of Hellgren (1967) from Sweden. The heritability estimates were based on both manifest and potential psoriasis since a clear separation of these two categories was impossible. These estimates were 64% for parents, 60% for siblings and 52% for all first degree relatives which included the children of psoriatic cases. For second degree relatives it was 48%. None of these differences are statistically significant. The results are discussed.
Elektrophoretische Untersuchungen der Glucose-6-phosphatdehydrogenase in Erythrocyten von Psoriatikern
Bei 103 manifesten Psoriatikern und 100 Kontrollpersonen ohne eigene oder familiar bekannte Psoriasisbelastung wurde die Erythrocyten-G-6-PDH elektrophoretisch bestimmt. In beiden Gruppen wiesen alle Personen mit einer Ausnahme bei den Psoriatikern eine einzige Bande auf, die dem Typ B entsprach, der im allgemeinen in jeder Population der haufigste ist. Bei einem Psoriatiker konnte eine Variante schnellerer elektrophoretischer Wanderungsgeschwindigkeit jedoch mit normaler Enzymaktivitat festgestellt werden, deren genaue Identifizierung bis jetzt noch nicht moglich war.
On the genetics of psoriasis
To elucidate the mode of inheritance in psoriasis, Falconer's model for estimating heritability which is under the assumption of multifactorial inheritance, was applied to the data of Hellgren (1967) from Sweden. The heritability estimates were based on both manifest and potential psoriasis since a clear separation of these two categories was impossible. These estimates were 64% for parents, 60% for siblings and 52% for all first degree relatives which included the children of psoriatic cases. For second degree relatives it was 48%. None of these differences are statistically significant. The results are discussed.