Nagashima-type palmoplantar keratosis in a Chinese Han population

نویسندگان

  • Jia Zhang
  • Guolong Zhang
  • Cheng Ni
  • Ruhong Cheng
  • Jianying Liang
  • Ming Li
  • Zhirong Yao
چکیده

Nagashima-type palmoplantar keratosis (NPPK) is an autosomal recessive form of palmoplantar keratoderma (PPK), which is caused by mutations in the SERPINB7 gene. NPPK has only been reported in Japanese and Chinese populations. The present study was conducted on 12 unrelated Chinese patients who were clinically predicted to suffer from NPPK. Mutation screening was performed by direct sequencing of the entire coding regions of SERPINB7, SLURP1, AQP5, CSTA, KRT1 and KRT9 genes. Direct sequencing of SERPINB7 revealed five homozygous founder mutations (c.796C>T) and four compound heterozygous mutations in nine patients, including one novel mutation (c.122_127delTGGTCC). Nine out of the 12 patients were diagnosed with NPPK due to SERPINB7 pathogenic mutations, and the results expanded the known mutation spectrum of NPPK. Taking the other seven reported Chinese patients, who had been definitively diagnosed with NPPK by genetic testing, into account, the present study further demonstrated that NPPK is a common entity in Mainland China, and c.796C>T is the most prevalent mutation and exerts a founder effect. Furthermore, the NPPK cases described in the current study presented a consistently mild phenotype, as compared with the degrees of phenotypic variability associated with other types of relatively severe PPK, including Mal de Meleda and Olmsted syndrome.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Possible Nagashima-Type Palmoplantar Keratosis in Two Siblings

Nagashima-type palmoplantar keratosis (PPK) is an autosomal recessive, transgressive and non-progressive form of PPK. It was once described as a mild form of mal de Meleda, but it is now proposed as a novel entity of PPK. Since its pathogenesis remains unclear, it is important to clarify the mode of inheritance. Here, we present a case of possible Nagashima-type PPK in 2 siblings. The siblings ...

متن کامل

Filaggrin Mutations are Associated with Ichthyosis Vulgaris in the Southern Chinese Population

IV (OMIM 146700) is the most common ichthyosis with an estimated prevalence of 1:250–1000, and is inherited in a semidominant pattern [1]. Patients have light grey scaling, keratosis pilaris, increased palmoplantar markings and associated atopic manifestations. Involvement is generally mild and may vary greatly with climate and humidity. There is reduced or absence of keratohyalin granules in t...

متن کامل

Normal Immunostaining Pattern for Aquaporin-5 in the Lesions of Palmoplantar Hyperhidrosis

Aquaporin-5 (AQP-5) is a water-transporting protein expressed in mammal sweat glands. It has been reported that the expression of AQP-5 is involved in sweating of mice, rats, and horses. However, the physiological function of human AQP-5 is still uncertain. In this report, we examined the expression pattern of AQP-5 in the skin lesions of palmoplantar hyperhidrosis in patients with Nagashima-ty...

متن کامل

Punctate palmoplantar keratoderma type 1: a novel AAGAB mutation and efficacy of etretinate.

Punctate palmoplantar keratoderma type 1 (PPKP1, OMIM#148600), also known as the Buschke-FischerBraurer type, is a rare form of palmoplantar keratoderma that is autosomal dominantly inherited (1). PPKP1 is clinically characterised by multiple punctate hyperkeratotic papules affecting the palmar and plantar skin, with considerable phenotypic variation among patients (2). These circumscribed papu...

متن کامل

Pachyonychia Congenita Associated with Oral Leukoplakia: A Rare Case Report with Review of Literature

Pachyonychia congenita comprises a heterogeneous group of autosomal dominantly inherited conditions manifesting with characteristic nail thickening, palmoplantar keratoderma, follicular keratosis and oral manifestations like mucosal leukokeratosis. Less frequently epidermal cysts, hair-shaft abnormalities, natal teeth and laryngeal involvement may be seen. It is distributed almost evenly throug...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره 14  شماره 

صفحات  -

تاریخ انتشار 2016