scholarly journals A Novel Mutation in the Transglutaminase-1 Gene in an Autosomal Recessive Congenital Ichthyosis Patient

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
D. Vaigundan ◽  
Neha V. Kalmankar ◽  
J. Krishnappa ◽  
N. Yellappa Gowda ◽  
A. V. M. Kutty ◽  
...  

Structure-function implication on a novel homozygous Trp250/Gly mutation of transglutaminase-1 (TGM1) observed in a patient of autosomal recessive congenital ichthyosis is invoked from a bioinformatics analysis. Structural consequences of this mutation are hypothesized in comparison to homologous enzyme human factor XIIIA accepted as valid in similar structural analysis and are projected as guidelines for future studies at an experimental level on TGM1 thus mutated.

2004 ◽  
Vol 20 (6) ◽  
pp. 325-332 ◽  
Author(s):  
R. M. Shawky ◽  
N.S. Sayed ◽  
N.A. Elhawary

Autosomal recessive congenital ichthyosis (ARCI) is a rare heterogeneous keratinization disorder of the skin. It is clinically divided into 2 subtypes, lamellar ichthyosis (LI) and congenital ichthyosiformis erythroderma (CIE). We investigated forty-three ARCI Egyptian individuals in 16 severe LI, and 10 CIE families. We identified 5 alleles in two Egyptian families as having intron-5/exon-6 splice acceptor mutation recognized by theMspIrestriction endonuclease. This promoted to a frequency of 9.6% for this mutation (5 splice-mutation alleles/52 alleles tested). We extended our previous dataset to update the detection of R142H mutation in 4 CIE Egyptian families and one LI phenotype (frequency of 28.8%; 15/52), whereas we still had no R141H among our Egyptian population. There was no correlation between phenotype and genotype in our study. Surprisingly, the mutant alleles detected in intron-5 acceptor splice-site were associated with the other extreme of CIE phenotypes rather than the severe LI form. We clearly demonstrated that the ARCI Egyptian families in Upper Egypt was ethnically pure and had a tendency not to be a hybrid with other populations in Lower Egypt, Delta zone and Cairo city.


2009 ◽  
Vol 30 (4) ◽  
pp. 537-547 ◽  
Author(s):  
Matthew L. Herman ◽  
Sharifeh Farasat ◽  
Peter J. Steinbach ◽  
Ming-Hui Wei ◽  
Ousmane Toure ◽  
...  

1999 ◽  
Vol 7 (6) ◽  
pp. 625-632 ◽  
Author(s):  
Elina Laiho ◽  
Kirsti-Maria Niemi ◽  
Jaakko Ignatius ◽  
Juha Kere ◽  
Aarno Palotie ◽  
...  

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