Abstract |
Woolly hair is characterized by fine and tightly curled hair. It has recently been revealed that both LPAR6 and lipase H (LIPH) mutations cause autosomal recessive woolly hair (ARWH)/ hypotrichosis. This notion has provided critical evidence to the concept that LPA6 activation by LIPH-catalyzed lipid mediator lysophosphatidic acid has a key role in regulation of hair follicle development. Very recently, novel mutations in exon 6, homozygous 736T>A and compound heterozygous 736T>A and 742C>A have been identified in Japanese ARWH/ hypotrichosis patients. Here, we report on siblings ( a 7-year-old Japanese girl and her 5-year-old brother) both showing woolly hair. Determination of their genomic sequence showed presence of a homozygous 736T>A transition in exon 6 of the LIPH gene changing cysteine at position 246 to serine, without any mutation in the LPAR6 gene. Additionally, the same mutation was found in one out of a 100 alleles of Japanese healthy controls and identified homozygously in three out of four other Japanese sporadic cases with woolly hair. Collectively, it has been suggested that 736T>A transition is highly specific and common in ARWH/ hypotrichosis of Japanese origin.
|
Authors | Takashi Yoshimasu, Nobuo Kanazawa, Naotomo Kambe, Motonobu Nakamura, Fukumi Furukawa |
Journal | The Journal of dermatology
(J Dermatol)
Vol. 38
Issue 9
Pg. 900-4
(Sep 2011)
ISSN: 1346-8138 [Electronic] England |
PMID | 21352330
(Publication Type: Case Reports, Journal Article)
|
Copyright | © 2011 Japanese Dermatological Association. |
Chemical References |
- LIPC protein, human
- Lipase
|
Topics |
- Alleles
- Amino Acid Substitution
- Asian People
(genetics)
- Base Sequence
- Child
- Child, Preschool
- DNA Mutational Analysis
- Exons
- Female
- Genes, Recessive
- Hair Diseases
(congenital, enzymology, genetics, pathology)
- Homozygote
- Humans
- Japan
- Lipase
(genetics)
- Male
- Mutation, Missense
- Pedigree
|