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1.
Braz J Infect Dis ; 23(6): 388-394, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31634439

RESUMO

Host immunogenetic setting is involved in the regulation of human papillomavirus (HPV) infection and development of condyloma acuminatum (CA). We investigated the correlation of two common single nucleotide polymorphisms (SNPs) (-607C/A and -137G/C) of IL-18 with the susceptibility of CA in a large Chinese cohort. Out of 408 CA patients analyzed, 300 had HPV infection transmitted through sexual contact (SC) and 108 through non-sexual contact (NSC). In addition, 360 healthy volunteers were enrolled as controls. SNPs at positions -607C/A and -137G/C in IL-18 promoter were analyzed. Comparing CA patients to healthy controls, no dominant relevance was found between the IL-18 promoter -607 C/A or -137G/C polymorphisms and the CA disease either identified genotypically (p > 0.05) or by allelically (p > 0.05). However, the IL-18 promoter -137G/C polymorphism genotype and allele frequencies in the NSC CA group, but not between in the SC group, were significantly higher than in the controls. There was no dominant relevance between IL-18-607C/A polymorphism genotype and allele frequencies among SC, NSC CA patients, and controls. Our study demonstrates that polymorphism -137G/C in IL-18 promoter is significantly correlated with risk of CA in NSC patients.

2.
ACS Appl Mater Interfaces ; 8(1): 187-96, 2016 Jan 13.
Artigo em Inglês | MEDLINE | ID: mdl-26653098

RESUMO

Implantable microelectrode arrays have attracted considerable interest due to their high temporal and spatial resolution recording of neuronal activity in tissues. We herein presented an implantable multichannel neural probe with multiple real-time monitoring of neural-chemical and neural-electrical signals by a nonenzymatic neural-chemical interface, which was designed by creating the newly developed reduced graphene oxide-gold oxide (rGO/Au2O3) nanocomposite electrode. The modified electrode on the neural probe was prepared by a facile one-step cyclic voltammetry (CV) electrochemical method with simultaneous occurrence of gold oxidation and GOs reduction to induce the intimate attachment by electrostatic interaction using chloride ions (Cl(-)). The rGO/Au2O3-modified electrode at a low deposition scan rate of 10 mVs(-1) displayed significantly improved electrocatalytic activity due to large active areas and well-dispersive attached rGO sheets. The in vitro amperometric response to H2O2 demonstrated a fast response of less than 5 s and a very low detection limit of 0.63 µM. In in vivo hyperacute stroke model, the concentration of H2O2 was measured as 100.48 ± 4.52 µM for rGO/Au2O3 electrode within 1 h photothrombotic stroke, which was much higher than that (71.92 µM ± 2.52 µM) for noncoated electrode via in vitro calibration. Simultaneously, the somatosensory-evoked potentials (SSEPs) test provided reliable and precise validation for detecting functional changes of neuronal activities. This newly developed implantable probe with localized rGO/Au2O3 nanocomposite electrode can serve as a rapid and reliable sensing platform for practical H2O2 detection in the brain or for other neural-chemical molecules in vivo.


Assuntos
Eletrofisiologia/métodos , Grafite/química , Neuroquímica/métodos , Próteses e Implantes , Acidente Vascular Cerebral/fisiopatologia , Acidente Vascular Cerebral/terapia , Doença Aguda , Animais , Calibragem , Modelos Animais de Doenças , Eletroquímica , Eletrodos , Ratos
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