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Transfection of SV40 plasmid induced higher DNA replication and lower LTag and STag transcripts in most of the examined cells compared to that miR-S1-deficient SV40 plasmid. However, miR-S1 itself did not affect DNA replication without the downregulation of LTag transcripts. Both LTag and STag induced the expression of tumor necrosis factor α (TNFα) and interleukin (IL)-17F, which was slightly reduced by miR-S1 due to miR-S1-mediated downregulation of LTag and STag. Forced miR-S1 expression did not affect TNFα expression, but increased IL-17F expression. Overall, our findings suggest that miR-S1-3p is a latent modifier of LTag and STag functions, ensuring efficient viral replication and attenuating cytokine expression detrimental to the viral life cycle.Oxidative stress, which is characterized by overproduction of reactive oxygen species (ROS), is considered a major risk factor associated with fibroblast death in severe lung diseases such as idiopathic pulmonary fibrosis. https://www.selleckchem.com/products/ki696.html trans-Cinnamaldehyde (tCA), the major phytochemical constituent in cinnamon, is known to possess strong anti-oxidant activity. However, whether tCA can defend lung fibroblasts against oxidative injury remains to be elucidated. Therefore, this study was conducted to investigate the protective effects of tCA on oxidative stress in V79-4 Chinese hamster lung fibroblasts. The current results showed that tCA inhibited hydrogen peroxide (H2O2)-induced cytotoxicity by blocking abnormal accumulation of ROS in V79-4 Chinese hamster lung fibroblasts. tCA attenuated apoptosis by suppressing of mitochondrial dysfunction and cytosolic release of cytochrome c, increasing the rate of Bcl-2/Bax expression and reducing the activity of caspase-9 and caspase-3 in H2O2-stimulated V79-4 cells, suggesting that tCA protected V79-4 cells from the induction of mitochondria-mediated apoptosis by H2O2. Additionally, the activation of nuclear factor-erythroid-2-related factor 2 (Nrf2) was markedly promoted by tCA in the presence of H2O2, which was associated with the enhanced expression of heme oxygenase-1 (HO-1). However, inhibiting the activity of HO-1 by zinc protoporphyrin IX, a potent inhibitor of HO-1, eliminated the ROS scavenging and protective effects of tCA, indicating that tCA was able to protect V79-4 lung fibroblasts from H2O2-induced oxidative stress by activating the Nrf2 signaling pathway. Therefore, it is suggested that tCA may be useful as a candidate for the treatment of oxidative stress-mediated lung injuries in the future.Lubiprostone is an effective drug for various types of constipation in patients without cancer; however, there is no report on its efficacy and safety in patients with cancer. Our purpose was to evaluate the efficacy and safety of lubiprostone for constipation in cancer patients. We retrospectively studied 124 patients (cancer, N = 67) who were treated with lubiprostone for constipation in our hospital between June 2013 and May 2016. The number of bowel movements (BMs) increased in the both the cancer and non-cancer groups. The mean change in BM frequency did not differ between the two groups. Approximately 70% of patients in both groups had an initial BM within 24 h after administration of lubiprostone. The most common lubiprostone-related adverse events in both groups were diarrhea (38.8 vs. 14%), and nausea (22.4 vs. 8.8%). No lubiprostone-related serious adverse events occurred. Discontinuation due to the side effects of lubiprostone was more frequent in cancer patients (p = 0.023). Logistic regression analysis showed that the risk of discontinuation of lubiprostone in cancer patients was high in patients with a body-mass index (BMI) less then 22, and low in patients using opioids and magnesium oxide dosage ≥1000 mg/d. Our study showed that while lubiprostone was as effective in cancer patients as in non-cancer patients, in cancer patients it was associated with a high incidence of diarrhea and nausea side effects and warranted caution, especially in patients with a low BMI.Cisplatin is a widely used chemotherapy for solid tumors; however, its benefits are limited by serious nephrotoxicity, particularly in proximal tubular cells. The present study investigated the renoprotective effect and mechanisms of germacrone, a bioactive terpenoid compound found in Curcuma species on cisplatin-induced toxicity of renal cells. Germacrone (50 and 100 µM) attenuated apoptosis of human renal proximal tubular cells, RPTEC/TERT1 following treatment with 50 µM cisplatin and for 48 h. Co-treating RPTEC/TERT1 cells with cisplatin and germacrone significantly reduced cellular platinum content compared with cisplatin treatment alone. The effect of germacrone on organic cation transporter 2 (OCT2) which is a transporter responsible for cisplatin uptake was determined. Germacrone showed an inhibitory effect on OCT2-mediated methyl-4-phenylpyridinium acetate (3H-MPP+) uptake with IC50 of 15 µM with less effect on OCT1. The germacrone's protective effect on cisplatin-induced cytotoxicity was not observed in cancer cells; cisplatin's anti-cancer activity was preserved. In conclusion, germacrone prevents cisplatin-induced toxicity in renal proximal tubular cells via inhibition OCT2 transport function and reducing cisplatin accumulation. Thus germacrone may be a good candidate agent used for reducing cisplatin-induced nephrotoxicity.Several studies show that maternal conventional cigarette smoking during pregnancy has been associated with reduced sperm concentration in sons. The development of heat-not-burn (HnB) tobacco has gained a growing following. However, the effects of prenatal HnB tobacco smoking on male offspring are as yet unknown. Pregnant CD-1 mice were exposed to I-Quit-Ordinary-Smoking (IQOS) (HnB tobacco) aerosol from heat sticks, mainstream smoke from 3R4F (conventional cigarettes) or clean air, using a whole-body exposure system. Adult male offspring mice were divided into six groups control (5- and 15-weeks-old offspring), IQOS (5 and 15-weeks-old) and 3R4F (5 and 15-weeks-old). Spermatogenesis, sperm characteristics, serum testosterone, and seminiferous tubule morphology were evaluated. Prenatal IQOS exposure increased abnormal seminiferous tubule morphology and decreased sperm production at 5 weeks, but 3R4F exposure did not. Prenatal exposure to IQOS aerosol delays sexual maturation of male offspring or adversely affects the male testicular function of the offspring more than smoke from a combustion cigarette.
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