نتایج جستجو برای: human vitiligo

تعداد نتایج: 1646075  

Journal: :Photodermatology, photoimmunology & photomedicine 2013
Hanan M A Saleh Nermeen S A Abdel Fattah Heba-Tullah M M Hamza

BACKGROUND Vitiligo is an autoimmune depigmentation disorder, commonly associated with systemic autoimmune diseases. Deficient serum 25-hydroxyvitamin D (25(OH)D) levels have been noted in some patients with autoimmune diseases. AIM To evaluate serum 25(OH)D levels in vitiligo patients with and without systemic autoimmune diseases. METHODS A case-control study was conducted on 40 vitiligo p...

2014
Selina K Tour Kim S Thomas Dawn-Marie Walker Paul Leighton Adrian SW Yong Jonathan M Batchelor

BACKGROUND Vitiligo is a chronic depigmenting skin disorder which affects around 0.5-1% of the world's population. The outcome measures used most commonly in trials to judge treatment success focus on repigmentation. Patient-reported outcome measures of treatment success are rarely used, although recommendations have been made for their inclusion in vitiligo trials. This study aimed to evaluate...

2015
Laila Rashed Rania Abdel Hay Rania Mahmoud Nermeen Hasan Amr Zahra Salwa Fayez Alessandro Giuffrè

BACKGROUND Vitiligo is a disorder with profound heterogeneity in its aetio-pathophysiology. Angiotensin converting enzyme (ACE) plays an important role in the physiology of the vasculature, blood pressure and inflammation. An insertion/deletion (I/D) polymorphism of the ACE gene was reported be associated with the development of vitiligo. OBJECTIVE Our aim was to evaluate the ACE I/D polymorp...

Journal: :iranian journal of allergy, asthma and immunology 0
zohreh jadali mohammad bagher eslami mohammad hossein sanati parvin mansoori mahmoud mahmoudi nader maghsoodi

a random 12 mers phage library was used to screen a pool of immunoglo¬bulin fractions obtained from vitiligo patients. subsequent to panning experiments, a panel of affinity selected phage from vitiligo patients were obtained. this panel was tested using an elis a for their reactivity with pooled sera from patients and normal controls. among the 16 randomly selected clones, two of clones showed...

Journal: :Indian journal of experimental biology 2006
E M Shajil Sreejata Chatterjee Deepali Agrawal T Bagchi Rasheedunnisa Begum

Vitiligo is a depigmenting disorder resulting from the loss of melanocytes in the skin and affects 1-4% of the world population. Incidence of vitiligo is found to be 0.5-2.5% in India with a high prevalence of 8.8% in Gujarat and Rajasthan states. The cellular and molecular mechanisms that lead to melanocyte destruction in this disorder are not yet been fully elucidated. Genetic factors, neural...

Journal: :Archives of dermatology 2008
Stanca A Birlea Pamela R Fain Richard A Spritz

OBJECTIVE To characterize the epidemiology and genetics of vitiligo and associated autoimmune diseases in a population isolate in Romania in which there is a high frequency of these diseases. DESIGN Prospective and retrospective ascertainment of all patients and extended families with these disorders in the study community. SETTING A geographically isolated community in the mountains of nor...

2017
Enke Baldini Teresa Odorisio Salvatore Sorrenti Antonio Catania Francesco Tartaglia Giovanni Carbotta Daniele Pironi Roberta Rendina Eleonora D’Armiento Severino Persechino Salvatore Ulisse

Vitiligo represents the most common cause of acquired skin, hair, and oral depigmentation, affecting 0.5-1% of the population worldwide. It is clinically characterized by the appearance of disfiguring circumscribed skin macules following melanocyte destruction by autoreactive cytotoxic T lymphocytes. Patients affected by vitiligo usually show a poorer quality of life and are more likely to suff...

2014
MARTHA ELENA GARCIA-MELENDEZ MAURICIO SALINAS-SANTANDER CELIA SANCHEZ-DOMINGUEZ HUGO GONZALEZ-CARDENAS RICARDO M. CERDA-FLORES JORGE OCAMPO-CANDIANI ROCÍO ORTIZ-LÓPEZ

Vitiligo is characterized by a skin depigmentation disorder resulting from an autoimmune response targeting melanocytes. Within the genetic factors involved in the development of the vitiligo immune response, various genes in the major histocompatibility complex (MHC) and non-MHC loci have been considered to be risk factors. The PTPN22 gene encodes for a lymphoid protein tyrosine phosphatase, a...

Journal: :Sao Paulo medical journal = Revista paulista de medicina 2005
Carlos D'Aparecida dos Santos Machado Filho Fernando Augusto Almeida Rodrigo Sestito Proto Gilles Landman

CONTEXT AND OBJECTIVE Recent studies have indicated that vitiligo areas contain inactive or dormant melanocytes. Melanin synthesis is related to tyrosinase presence and indicative of active metabolic state. The aim of this study was to compare repigmentation, epidermal melanocyte distribution and tyrosinase mRNA detection through reverse transcriptase polymerase chain reaction, in tissue sample...

Journal: :Journal of Investigative Dermatology 2023

Vitiligo is an acquired chronic inflammatory skin disease culminating in depigmentation due to loss of epidermal melanocytes. Melanocyte homeostasis involves melanocyte stem cells, melanoblasts and differentiated interfollicular hair follicle melanocytes, which play important role repigmentation vitiligo. Our laboratory performed scRNAseq on cKit +ve human melanocytes purified by flow cytometry...

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