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1.
Stem Cell Res Ther ; 8(1): 236, 2017 Oct 23.
Artigo em Inglês | MEDLINE | ID: mdl-29058626

RESUMO

BACKGROUND: The use of stem cells, including mesenchymal stem cells (MSCs), for regenerative medicine is gaining interest for the clinical benefits so far obtained in patients. This study investigates the use of adipose autologous tissue in combination with platelet-rich plasma (PRP) to improve the clinical outcome of patients affected by systemic sclerosis (SSc). METHODS: Adipose-derived mesenchymal stem cells (AD-MSCs) and PRPs were purified from healthy donors and SSc patients. The multilineage differentiation potential of AD-MSCs and their genotypic-phenotypic features were investigated. A cytokine production profile was evaluated on AD-MSCs and PRPs from both healthy subjects and SSc patients. The adipose tissue-derived cell fraction, the so-called stromal vascular fraction (SVF), was coinjected with PRP in the perioral area of SSc patients. RESULTS: Histopathological and phenotypical analysis of adipose tissue from SSc patients revealed a disorganization of its distinct architecture coupled with an altered cell composition. Although AD-MSCs derived from SSc patients showed high multipotency, they failed to sustain a terminally differentiated progeny. Furthermore, SVFs derived from SSc patients differed from healthy donors in their MSC-like traits coupled with an aberrant cytokine production profile. Finally, the administration of PRP in combination with autologous SVF improved buccal's rhyme, skin elasticity and vascularization for all of the SSc patients enrolled in this study. CONCLUSIONS: This innovative regenerative therapy could be exploited for the treatment of chronic connective tissue diseases, including SSc.


Assuntos
Tecido Adiposo/citologia , Transplante de Células-Tronco Mesenquimais , Células-Tronco Mesenquimais/citologia , Plasma Rico em Plaquetas/fisiologia , Medicina Regenerativa/métodos , Escleroderma Sistêmico/terapia , Tecido Adiposo/imunologia , Adulto , Idoso de 80 Anos ou mais , Antígenos CD/genética , Antígenos CD/imunologia , Diferenciação Celular , Proliferação de Células , Terapia Baseada em Transplante de Células e Tecidos/métodos , Citocinas/genética , Citocinas/imunologia , Feminino , Expressão Gênica , Humanos , Masculino , Células-Tronco Mesenquimais/imunologia , Pessoa de Meia-Idade , Neovascularização Fisiológica , Cultura Primária de Células , Escleroderma Sistêmico/imunologia , Escleroderma Sistêmico/patologia , Pele/patologia
2.
Ophthalmic Genet ; 34(1-2): 115-7, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-22846113

RESUMO

Congenital cataract is a leading cause of visual impairment in children and brings approximately 10% of childhood blindness worldwide. Molecular analysis revealed ~60 loci to be associated with several phenotypes of childhood cataracts. Until now, more than 30 loci and 18 genes on different chromosomes have been associated with autosomal dominant congenital cataract (ADCC). Here, we present a three-generation Italian family with a non syndromic ADCC. A linkage analysis carried out using HumanCytoSNP-12 DNA Analysis BeadChip led us to identify ten genomic regions virtually involved in the disease. All the genes located in these regions were scored for possible relationship with ADCC and, according to a strict clinical and genetic selection, 4 genes have been analyzed. A novel sequence variant was found in the CRYBB2 gene (p.Ser143Phe). This variant affects a conserved aminoacid in the third Greek key motif of the protein, cosegregates with the disease phenotype in all affected individuals and is not present both in the unaffected family members and 100 healthy control subjects. Finally, we identified the first CRYBB2 mutation in an Italian family causing a clinical picture of ADCC.


Assuntos
Catarata/congênito , Catarata/genética , Mutação de Sentido Incorreto , Cadeia B de beta-Cristalina/genética , Sequência de Aminoácidos , Análise Mutacional de DNA , Feminino , Genes Dominantes , Ligação Genética , Genótipo , Humanos , Itália , Masculino , Dados de Sequência Molecular , Linhagem , Fenótipo
3.
Ophthalmic Genet ; 32(4): 212-6, 2011 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-21510772

RESUMO

BACKGROUND: To describe clinical and genetic observations in a patient with horizontal gaze palsy and progressive scoliosis (HGPPS) without identified mutations in the ROBO3 gene. MATERIALS AND METHODS: Neurologic and orthopedic evaluation of the proband; sequencing all exons, exon-intron boundaries, and promoter region of ROBO3 in the proband and his mother. Array CGH was also carried out in the proband and his mother to evaluate possible chromosomal deletion(s) and/or duplication(s). RESULTS: The proband had complete horizontal gaze restriction with full vertical gaze and small amplitude horizontal pendular nystagmus. He also had severe scoliosis and brainstem hypoplasia pathognomonic of HGPPS. However, complete sequencing of ROBO3 twice in both forward and reverse directions did not reveal any mutations. Array CGH investigation revealed no chromosomal abnormalities. CONCLUSIONS: This patient had clinical and neuroimaging characteristics considered pathognomonic of HGPPS and yet did not have ROBO3 mutations. A clinical misdiagnosis is unlikely in the absence of facial weakness (typical of Moebius syndrome), deafness (typical of the HOXA1 spectrum), or mental retardation (typical of other central decussation abnormalities). It is perhaps more likely that a phenotype identical to HGPPS can be caused by abnormalities in ROBO3 splice variant expression, by mutations of a gene other than ROBO3, or by some environmental or epigenetic factor(s) inhibiting the action of ROBO3 or its protein product in the developing brainstem.


Assuntos
Cifose/etiologia , Mutação , Transtornos da Motilidade Ocular/etiologia , Doenças do Nervo Oculomotor/etiologia , Receptores Imunológicos/genética , Escoliose/etiologia , Criança , Humanos , Cifose/diagnóstico , Imageamento por Ressonância Magnética , Masculino , Transtornos da Motilidade Ocular/diagnóstico , Doenças do Nervo Oculomotor/diagnóstico , Linhagem , Receptores de Superfície Celular , Escoliose/diagnóstico
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