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Titanium dioxide (TiO2) nanoparticles (NPs) have been widely used in our daily lives, for example, in the areas of sunscreens, cosmetics, toothpastes, food products, and nanomedical reagents. Recently, increasing concern has been raised about their neurotoxicity, but the mechanisms underlying such toxic effects are still unknown. In this work, we employed a(More)
BACKGROUND Little is known about mesenchymal stem cells (MSCs) in normal or inflammatory oral mucosal tissues, such as in oral lichen planus (OLP). Our objectives were to identify, isolate, and characterize MSCs from normal human oral mucosa and OLP lesions, and to evaluate indoleamine 2,3 dioxygenase (IDO) activity in mediating immunomodulation of MSCs(More)
Gold nanorods (GNRs) are commonly used nanomaterials with potential harmful effects on male reproduction. However, the mechanism by which GNRs affect male reproduction remains largely undetermined. In this study, the metabolic changes in spermatocyte-derived cells GC-2 and Sertoli cell line TM-4 were analyzed after GNR treatment for 24 h. Metabolomic(More)
Heat stress (HS) is a potential harmful factor for male reproduction. However, the effect of HS on Sertoli cells is largely unknown. In this study, the metabolic changes in Sertoli cell line were analyzed after HS treatment. Metabolomic analysis revealed that carnitine, 2-hydroxy palmitic acid, nicotinic acid, niacinamide, adenosine monophosphate, glutamine(More)
Perfluorooctane sulfonate (PFOS) poses potential risks to reproduction and development. Mouse embryonic stem cells (mESCs) are ideal models for developmental toxicity testing of environmental contaminants in vitro. However, the mechanism by which PFOS affects early embryonic development is still unclear. In this study, mESCs were exposed to PFOS for 24 h,(More)
Silica nanoparticles (NP) is one of the most commonly used nanomaterials with potential health hazards. However, the effects of Silica NP on germ cells and the underlying mechanisms are still unclear. In this study, GC-2 and TM-4, which are two different types of male germ cells were exposed to Silica NP for 24h, and then general cytotoxicity and(More)
Perfluorooctane sulfonate (PFOS) poses potential risks to early development, but the molecular mechanisms how PFOS affects embryonic development are still unclear. Mouse embryoid bodies (mEBs) provide ideal models for testing safety or toxicity of chemicals in vitro. In this study, mEBs were exposed to PFOS up to 6 days and then their pluripotency and(More)
Connexins (Cxs), the subunits of gap junction channels, are involved in many physiological processes. Aberrant control of Cxs and gap junction intercellular communication may contribute to many diseases, including the promotion of cancer. Cd exposure is associated with increased risk of human prostate cancer and benign prostatic hyperplasia. The roles of(More)
Thirdhand smoke (THS) is a new term for the toxins in cigarette smoke that linger in the environment long after the cigarettes are extinguished. The effects of THS exposure on male reproduction have not yet been studied. In this study, metabolic changes in male germ cell lines (GC-2 and TM-4) were analyzed after THS treatment for 24 h. THS-loaded(More)