نتایج جستجو برای: oculocutaneous albinism

تعداد نتایج: 7152  

2003
R. A. Schwartz

Oculocutaneous albinism represents a group of inherited skin disorders characterized by a generalized reduction of cutaneous, ocular, and pilar pigmentation from the time of birth. Oculocutaneous albinism types I and II are the most common, with several other types described. A defect in the melanin synthesis pathway, resulting in reduced formation of melanin, is responsible for oculocutaneous ...

Journal: :Journal of Medical Case Reports 2008
Muideen O Bakare Nkeiruka N Ikegwuonu

INTRODUCTION Hypomelanotic skin disorders like tuberous sclerosis and hypomelanosis of Ito that present with multiple systemic manifestations have been reported in association with childhood autism. Oculocutaneous albinism is another hypomelanotic skin disorder that rarely presents with multiple systemic manifestations. It is infrequently reported in association with childhood autism when compa...

Journal: :Atlas of Genetics and Cytogenetics in Oncology and Haematology 2017

2015
Faravareh Khordadpoor-Deilamani Mohammad Taghi Akbari Morteza Karimipoor Gholamreza Javadi

PURPOSE Albinism is a heterogeneous genetic disorder of melanin synthesis that results in hypopigmented eyes (in patients with ocular albinism) or hair, skin, and eyes (in individuals with oculocutaneous albinism). It is associated with decreased visual acuity, nystagmus, strabismus, and photophobia. The tyrosinase gene is known to be involved in both oculocutaneous albinism and autosomal reces...

2013
André Omgbwa Eballé Côme Ebana Mvogo Christelle Noche Marie Evodie Akono Zoua Andin Viola Dohvoma

BACKGROUND Albinism causes significant eye morbidity and amblyopia in children. The aim of this study was to determine the refractive state in patients with complete oculocutaneous albinism who were treated at the Gynaeco-Obstetric and Paediatric Hospital, Yaoundé, Cameroon and evaluate its effect on vision. METHODS We carried out this retrospective study at the ophthalmology unit of our hosp...

Journal: :Orphanet Journal of Rare Diseases 2007
Karen Grønskov Jakob Ek Karen Brondum-Nielsen

Oculocutaneous albinism (OCA) is a group of inherited disorders of melanin biosynthesis characterized by a generalized reduction in pigmentation of hair, skin and eyes. The prevalence of all forms of albinism varies considerably worldwide and has been estimated at approximately 1/17,000, suggesting that about 1 in 70 people carry a gene for OCA. The clinical spectrum of OCA ranges, with OCA1A b...

Journal: :Journal of medical genetics 1988
D Castle J Kromberg R Kowalsky R Moosa N Gillman E Zwane V Fritz

Visual evoked potential testing was performed on 15 Negro carriers of the gene for tyrosinase positive oculocutaneous albinism in order to detect whether they have the same visual pathway decussation anomalies as do homozygotes. No subject showed 01-02 asymmetry on monocular testing, indicating that decussation follows the normal pattern. It is concluded that visual evoked potential testing is ...

Journal: :iranian journal of public health 0
h pour-jafari a zamanian b pour-jafari

background: oculocutaneous albinism type1 (oca1) is characterized by the absence of melanin pigmentation. the muta­tion on tyr gene makes oca1 as an autosomal recessive genetic disorder. in this study, we delineated the genetic analysis of an iranian family with four members affected with oca1.  methods: clinical exams and paraclinical test were performed for all patients of the case family, al...

خالصی, نسرین , صالحی, فرود, کشاورز, کامبیز,

    Introduction: Albinism refers to a group of inherited conditions. People with albinism have little or no pigment in their eyes, skin and hair. Albinism doesn't occur together with other anomalies with the exception of a case associated with microcephaly and digital hypoplasia. VACTERL is a syndrome consisting of multiple anomalies such as vertebral anomalies, anal atresia, cardiac anomaly, ...

2010
H Pour-Jafari A Zamanian B Pour-Jafari

BACKGROUND Oculocutaneous albinism type1 (OCA1) is characterized by the absence of melanin pigmentation. The mutation on TYR gene makes OCA1 as an autosomal recessive genetic disorder. In this study, we delineated the genetic analysis of an Iranian family with four members affected with OCA1. METHODS Clinical exams and paraclinical test were performed for all patients of the case family, also...

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