RESUMO
Our aim was to characterize the endothelial progenitor cells (EPCs) in normotensive controls and treated hypertensive individuals within the vascular endothelial growth factor (VEGF) -460 C/T polymorphism as well as to investigate whether this polymorphism predisposes to hypertension-related chronic kidney disease. The hypertensive patients bearing the TT genotype had the highest levels of immature EPC with the following phenotypes: CD34(+), CD34(+)CD45(dim), CD34(+)CD133(+)CD45(dim). The study showed the estimated glomerular filtration rate values significantly lower and creatinine and BUN parameters higher among the TT hypertensive patients. We presume that the highest mobilization of EPCs from bone marrow may signalize more severe renal hypertension-related complications in the VEGF -460 TT genotype.
Assuntos
Células Progenitoras Endoteliais/fisiologia , Hipertensão Renal/genética , Polimorfismo Genético/genética , Insuficiência Renal Crônica/genética , Fator A de Crescimento do Endotélio Vascular/genética , Antígeno AC133/genética , Adulto , Idoso , Antígenos CD34/genética , Células da Medula Óssea/fisiologia , Movimento Celular , Feminino , Citometria de Fluxo , Genótipo , Taxa de Filtração Glomerular/fisiologia , Humanos , Hipertensão Renal/metabolismo , Antígenos Comuns de Leucócito/genética , Masculino , Pessoa de Meia-Idade , Insuficiência Renal Crônica/metabolismo , Insuficiência Renal Crônica/fisiopatologia , Fator A de Crescimento do Endotélio Vascular/metabolismo , Receptor 2 de Fatores de Crescimento do Endotélio Vascular/genéticaRESUMO
Our purpose was to determine whether the VEGF -152 G/A polymorphism could be associated with chronic kidney disease and endothelial dysfunction in hypertensive patients. There were 100 healthy volunteers enrolled into the control group. The group of patients was constituted by 99 consecutively admitted hypertensive patients referred to our Institution by their general practitioner. All patients were treated with anti-hypertensive polytherapy. Presented study revealed that the hypertensive patients bearing the GG genotype were characterized by the highest values of diastolic blood pressure and markers of endothelial damage such as Angiogenin, Endostatin, CRP as well as von Willebrandt factor. In addition, higher number of immature endothelial progenitor cells with CD34(+)CD133(+), CD34(+)CD133(-) markers was observed in GG hypertensive carriers while in normotensive individuals no differences were found. Such phenomenon may indicate an increased mobilization of bone-marrow derived endothelial progenitors. It may testify to the preserved compensatory mechanism in chronic kidney disease (CKD) patients until the G3a stage of the disease. Moreover, patients with higher estimated glomerular filtration rate (eGFR) level had lower of vWf and Endostatin values, and higher level of VEGF. Taken together our findings clearly indicate the -152 GG hypertensive carriers as more prone to develop CKD. We can suspect that the VEGF -152 GG genotype is strongly associated with hypertension-dependent CKD.
Assuntos
Hipertensão/genética , Insuficiência Renal Crônica/genética , Fator A de Crescimento do Endotélio Vascular/genética , Adulto , Idoso , Estudos de Casos e Controles , Feminino , Estudos de Associação Genética , Predisposição Genética para Doença , Taxa de Filtração Glomerular , Humanos , Masculino , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo ÚnicoRESUMO
Vascular endothelial growth factor (VEGF) is a highly specific mitogen with angiogenic and vascular permeability activities for endothelial cells. VEGF participates in maintaining the renal vasculature integrity. There is no doubt that hypertension accelerates progression to renal dysfunction, resulting in chronic kidney disease (CKD). The purpose of our study was to examine the VEGF -1154 G/A (rs1570360) polymorphism among hypertensive patients with CKD. Additionally markers of endothelial damage have been related to the advancement of CKD. There were 96 consecutively admitted hypertensive patients referred to our Institution by their general practitioner. The patients were treated with an anti-hypertensive polytherapy. Ninety-nine healthy volunteers were enrolled as the control group. Our study revealed that both healthy and hypertensive groups frequencies of the genotypes varied significantly (p = 0.030, χ (2) test). The GA genotype frequency was significantly lower among patients in comparison with healthy. The presence of GA genotype was connected with a decreased risk of hypertension disease (OR = 0.48, p = 0.01). The VEGF -1154 GA carriers have been associated with the lowest values of Endostatin (p = 0.020), Angiogenin (p = 0.040) as well as vWf (p = 0.005). The GA genotype has been characterized by the highest values of eGFR (p = 0.024) and the lowest values of creatinine (p = 0.028) and BUN (p = 0.012). It is evident that the GA genotype of VEGF polymorphism localized at -1154 position is a genetic protective factor for development arterial hypertension and is associated with less progressed CKD.
