MicroRNA and mRNA Interaction Network Regulates the Malignant Transformation of Human Bronchial Epithelial Cells Induced by Cigarette Smoke.

This study analyzes the correlation and interaction of miRNAs and mRNAs and their biological function in the malignant transformation of BEAS-2B cells induced by cigarette smoke (CS). Normal human bronchial epithelial cells (BEAS-2B) were continuously exposed to CS for 30 passages (S30) to establish an cell model of malignant transformation. The transformed cells were validated by scratch wound healing assay, transwell migration assay, colony formation and tumorigenicity assay.

Multi-platform analysis of methylation-regulated genes in human lung adenocarcinoma.

Lung adenocarcinoma (LUAD) is the most frequent pathological type of lung cancer that has a poor prognosis and high mortality rate. DNA methylation plays a critical role in various biological processes during development, while dysregulation results in pathological consequences. Thus, this study aimed to identify DNA methylation-regulated genes involved in LUAD occurrence.

Radon-induced alterations in micro-RNA expression profiles in transformed BEAS2B cells.

Radon and its progeny are confirmed to be type I carcinogenic agents accounting for increased risks in 10% of observed lung cancers globally. However, the underlying carcinogenic mechanisms are largely unknown. In the present study, BEAS2B cells were directly exposed twice to 20,000 Bq/m(3) radon gas for 20 min once (first passage) and subsequently 10 times (fifth passage).

Effects of 1800-MHz radiofrequency fields on circadian rhythm of plasma melatonin and testosterone in male rats.

Radiofrequency fields (RF) at 1800 MHz are known to affect melatonin (MEL) and testosterone in male rats, but it remains to be determined whether RF affected circadian rhythm of these plasma hormones. Male Sprague-Dawley rats were exposed to 1800-MHz RF at 208 μw/cm² power density (SAR: 0.5762 W/kg) at different zeitgeber (ZT) periods of the day, including 0 (ZT0), 4 (ZT4), 8 (ZT8), 12 (ZT12), 16 (ZT16), and 20 (ZT20) h.

Screening of differential expressive genes in murine cells following radon exposure.

This study was designed to construct and identify the subtracted cDNA library in peripheral blood cells of BALB/c mice and tracheal-bronchial epithelial cells of Wistar rats following exposure to radon inhalation. Two groups of the animals were exposed in a radon chamber at an accumulative dose of 100 WLM, while control animals were housed in a room at a background dose of 1 WLM. To construct a subtracted cDNA library enriched with differentially expressed genes, the SMART technique and suppression subtractive hybridization (SSH) assay were performed.

[Antagonistic effect of microwave on hematopoietic damage of mice induced by gamma-ray irradiation].

Objective: To investigate antagonistic effect of microwave on hematopoietic damage of mice induced by gamma-ray irradiation.

Methods: Male healthy Kunning mice were treated with low dose microwave radiation before exposure to (60)Co gamma-ray irradiation of 8.0 Gy.

[Comments on the Confucian physician].

Confucianism gradually permeated and influenced the development of TCM from the Song dynasty, and the term "Confucian physician" is still in use today. With the impact of Confucianism, whether in the compilation of the medical classics or the explanation and conclusion of the medical theories as well as in medical education and ethics, all developed dramatically. But the Confucianism had also a negative effect on the development of medicine.

[The effect of entecavir treatment on HBV-specific immunity in patient with chronic hepatitis B and its relationship to HBeAg sero-conversion].

Objective: To investigate the effect of Entecavir treatment on HBV-specific immunity in patient with chronic hepatitis B and its relationship to HBeAg sero-conversion.

Methods: Serum aminotransferase (ALT), HBV DNA and HBeAg were monitored before the after entecavir treatment. At the same time point, HBV-specific T cell proliferation was determined by [3H] T-dR incorporation assay, while HBV-specific IFN-alpha secretion was measured by ELISA.

Radon-induced proteomic profile of lung tissue in rats.

The aim of this study was to investigate the differential expression of proteins in lung of rats following long-term exposure to radon. The total proteins of lung tissue from Wistar rats exposed to radon for cumulative doses up to 100, 200, or 400 WLM (working level months) were isolated by two-dimensional electrophoresis (2-DE) and analyzed with ImageMaster 2D Platinum software. Comparison of the 2-DE images between the control and radon-exposed groups resulted in 14 upregulated and 9 downregulated protein spots, of which 15 were identified by matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) or matrix-assisted laser desorption/ionization time-of-flight/time-of-flight mass spectrometry (MALDI-TOF/TOF-MS).

Screening of differential expression genes in bone marrow cells of radon-exposed mice.

This study was designed to screen for differential expression genes in bone marrow cells of mice exposed to radon inhalation. Based upon established pathological findings in mouse, differential screening of gene expressions was conducted by using the SSH method. Among 285 cDNA clones selected from both forward- and reverse subtracted libraries, 45 were chosen for their differential expressions based on reverse Northern blot and quantitative real-time PCR analysis.

[Roles of the histaminergic receptors in the locus ceruleus in stress-induced carotid baroreflex resetting in rats].

Aim: To explore the roles of H1 and H2 receptors in the locus ceruleus (LC) in the carotid baroreflex (CBR) resetting resulted from foot-shock stress.

Methods: Male SD rats were divided into two groups (n=18) at random: unstressed and stressed group. The latter were subjected to unavoidable electric foot-shock twice daily for a week and each session of foot-shock lasted 2 hours.

Circadian rhythms and different photoresponses of Clock gene transcription in the rat suprachiasmatic nucleus and pineal gland.

The aim of this study was to observe and compare the endogenous circadian rhythm and photoresponse of Clock gene transcription in the suprachiasmatic nucleus (SCN) and pineal gland (PG) of rats. With free access to food and water in special darkrooms, Sprague-Dawley rats were housed under the light regime of constant darkness (DD) for 8 weeks (n=36) or 12 hour-light: 12 hour-dark cycle (LD) for 4 weeks (n=36), respectively. Then, their SCN and PG were dissected out every 4 h in a circadian day, 6 rats at each time (n=6).