Exposure to Radon and Kidney Cancer: A Systematic Review and Meta-analysis of Observational Epidemiological Studies.

Objective: To evaluate the possible association between radon exposure and kidney cancer.

Methods: We performed a systematic review and a meta-analysis based on random effect models to provide a pooled association measure.

Results: We subjected 8 studies (overall relative risks and 95% confidence intervals: 1.

90d Exposure to Nonylphenol has Adverse Effects on the Spermatogenesis and Sperm Maturation of Adult Male Rats.

This study was conducted to elucidate the reproductive effect of NP on testis, epididymis and epididymal sperm in vivo. Adult male Sprague-Dawley rats were gavaged with NP at 0, 40, 100, or 250 mg/kg body weight (bw) on alternate days for 90 d. The results showed that oral administration of NP may damage the structure and function of testis, induce apoptosis and oxidative stress in epididymis or even have cytotoxic effects on epididymal sperm.

Effect of gold nanoparticles on the fluorescence excitation spectrum of α-fetoprotein: local environment dependent fluorescence quenching.

The effect of colloid gold nanoparticles (AuNPs) on the fluorescence excitation spectrum of α-fetoprotein (AFP) has been investigated experimentally. The excitation spectral peaks of AFP with low concentration from 0.01 ng ml(-1) to 12 ng ml(-1) increase monotonically with increasing of AFP concentration.

Fluorescence Quenching of Alpha-Fetoprotein by Gold Nanoparticles: Effect of Dielectric Shell on Non-Radiative Decay.

Fluorescence quenching spectrometry was applied to study the interactions between gold colloidal nanoparticles and alpha-fetoprotein (AFP). Experimental results show that the gold nanoparticles can quench the fluorescence emission of adsorbed AFP effectively. Furthermore, the intensity of fluorescence emission peak decreases monotonously with the increasing gold nanoparticles content.