نتایج جستجو برای: oca1a albinism

تعداد نتایج: 7091  

Journal: :International journal of medical ophthalmology 2022

Introduction: Albinism comes from ‘albus’, the Latin word meaning white, and refers to a group of hereditary disorders wherein biosynthesis pigment melanin is absent or reduced. Oculocutaneous albinism (OCA) heterogeneous autosomal recessive disorder that involves lack in skin, hair, eyes, associated with ocular visual defects such as photophobia, strabismus, nystagmus low vision. Materials Met...

Journal: :Mutation research 2013
A P Møller A Bonisoli-Alquati T A Mousseau

The effects of radioactive contamination on the phenotype of free-living organisms are poorly understood, mainly because of the difficulty of capturing the large numbers of individual specimens that are required to quantify rare events such as albinism and tumour formation. We hypothesized that the frequency of abnormalities like albinism and the frequency of radiation-induced diseases like can...

Journal: :Curationis 2002
R J Gaigher P M Lund E Makuya

This article maintains that it is the social context, as much as, and sometimes more than the physical condition, that largely structures and limits the lives of people with albinism. It deals with albinism from a sociological, rather than a medical perspective. Viewed as such the problems experiencing by affected people stem primarily not from their physical differences but from the way others...

Journal: :Genetics and molecular research : GMR 2016
J J Xue J F Xue H Q Xue Y Y Guo Y Liu N Ouyang

Albinism is a diverse group of hypopigmentary disorders caused by multiple-genetic defects. The genetic diagnosis of patients affected with albinism by Sanger sequencing is often complex, expensive, and time-consuming. In this study, we performed targeted next-generation sequencing to screen for 16 genes in a patient with albinism, and identified 21 genetic variants, including 19 known single n...

2016
Giorgio Brocco

Societal ideas and explanations of albinism at the local level in Tanzania are conceived in terms of family history, social relations, economic status, moral-religious positions, global-local flows of information and humanitarian actions on behalf of people with the congenital condition. This paper aims to show how the subjectivities of people with albinism in Tanzania are shaped and re-shaped ...

Journal: :iranian journal of child neurology 0
b.sh. shamsian md assistant professor, department of pediatric hematology-oncology,mofid children's hospital,shaid beheshti medical university m.t. arzanian md assistant professor ,cheif of hematology-oncology ward, department of pediatric hematology-oncology, shaid beheshti medical university s. alavi md assistant professor, department of pediatric hematology-oncology, namazi hospital, shiraz university of medical sciences s. zareifar md assistant professor, department of pediatric hematology-oncology, namazi hospital, shiraz university of medical sciences

abstract: griscelli syndrome (gs) is a rare disease first described in 1978. it is inherited in autosomal recessive pattern. this disease is characterized by partial albinism, pigmentation dilution, cellular immunodeficiency, neurological involvement & uncontrolled phases of macrophage & lymphocyte activation. we report a 5 months old iranian girl presenting with silver-gray hair,eyelashes and ...

Journal: :Investigative ophthalmology & visual science 2014
Melissa A Wilk John T McAllister Robert F Cooper Adam M Dubis Teresa N Patitucci Phyllis Summerfelt Jennifer L Anderson Kimberly E Stepien Deborah M Costakos Thomas B Connor William J Wirostko Pei-Wen Chiang Alfredo Dubra Christine A Curcio Murray H Brilliant C Gail Summers Joseph Carroll

PURPOSE Albinism is associated with disrupted foveal development, though intersubject variability is becoming appreciated. We sought to quantify this variability, and examine the relationship between foveal cone specialization and pit morphology in patients with a clinical diagnosis of albinism. METHODS We recruited 32 subjects with a clinical diagnosis of albinism. DNA was obtained from 25 s...

Journal: :Vision Research 2004
Hisao Ohde Kei Shinoda Takatsune Nishiyama Hisashi Kado Yasuhiro Haruta Yukihiko Mashima Yoshihisa Oguchi

In humans with albinism, a large percentage of the ganglion cell axons from the temporal retina decussate abnormally in the chiasm and synapse in the contralateral LGN. The aim of this study was to determine whether the misrouting of the optic fibers can be detected by magnetoencephalography (MEG). Visually evoked magnetic fields (VEFs) were recorded from three patients with albinism. After mon...

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: :Clinical genetics 2016
A O Khan M Tamimi S Lenzner H J Bolz

To the Editor: Albinism is a genetically heterogeneous group of disorders characterized by reduced melanin biosynthesis that primarily affects the skin and/or the eye (1). All known genetic causes are autosomal recessive except for X-linked isolated ocular albinism [Nettleship-Falls or OA1, GPR143 (G-protein coupled receptor 143)] (1). A total of 18 different genes have been identified to date,...

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