journal
MENU ▼
Read by QxMD icon Read
search

Environmental Toxicology

journal
https://www.readbyqxmd.com/read/29148169/antitumor-and-anti-metastatic-mechanisms-of-rhizoma-paridis-saponins-in-lewis-mice
#1
Shuli Man, Hongyan Chai, Jingxia Cui, Jingwen Yao, Long Ma, Wenyuan Gao
Lung cancer is one of the most common causes of death in the world. Rhizoma paridis saponins (RPS) have been found to show inhibition of pulmonary adenoma in previous research. However, the detailed mechanisms of RPS from a holistic view have not been established. In this study, Lewis pulmonary adenoma mice were successfully established to analyze the pathways involved in RPS intervening tumor formation and progression. As a result, RPS inhibited levels of cytokines or receptors such as VEGFD, VEGFR3, RAGE, IL6R, IL17BR, and CXCL16 which were regarded as the initiators induced tumor cell proliferation, adhesion, angiogenesis, and invasion...
November 17, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29143438/protective-effects-of-coenzyme-q10-nanoparticles-on-dichlorvos-induced-hepatotoxicity-and-mitochondrial-lysosomal-injury
#2
Aziz Eftekhari, Elham Ahmadian, Aida Azami, Mohammad Johari-Ahar, Mohammad Ali Eghbal
Development of biocompatible antioxidant nanoparticles for xenobiotic-induced liver disease treatment by oral or parenteral administration is of great interest in medicine. In the current study, we demonstrate the protective effects of coenzyme Q10 nanoparticles (CoQ10-NPs) on hepatotoxicity induced by dichlorvos (DDVP) as an organophosphate. Although CoQ10 is an efficient antioxidant, its poor bioavailability has limited the applications of this useful agent. First, CoQ10-NPs were prepared then characterized using dynamic light scattering (DLS) and transmission electron microscopy (TEM)...
November 16, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29139225/oolong-tea-prevents-cardiomyocyte-loss-against-hypoxia-by-attenuating-p-jnk-mediated-hypertrophy-and-enhancing-p-igf1r-p-akt-and-p-bad-ser136-activity-and-by-fortifying-nrf2-antioxidation-system
#3
Marthandam Asokan Shibu, Chia-Hua Kuo, Bih-Cheng Chen, Da-Tong Ju, Ray-Jade Chen, Chao-Hung Lai, Pei-Jane Huang, Vijaya Padma Viswanadha, Wei-Wen Kuo, Chih-Yang Huang
Tea, the most widely consumed natural beverage has been associated with reduced mortality risk from cardiovascular disease. Oolong tea is a partially fermented tea containing high levels of catechins, their degree of oxidation varies between 20%-80% causing differences in their active metabolites. In this study we examined the effect of oolong tea extract (OTE) obtained by oxidation at low-temperature for short-time against hypoxic injury and found that oolong tea provides cyto-protective effects by suppressing the JNK mediated hypertrophic effects and by enhancing the innate antioxidant mechanisms in neonatal cardiomyocytes and in H9c2 cells...
November 15, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29139221/evaluation-of-hypothalamus-pituitary-thyroid-axis-function-by-chronic-perchlorate-exposure-in-male-rats
#4
Caroline Serrano-Nascimento, Jamile Calil-Silveira, Rafael Dalbosco, Telma Tenorio Zorn, Maria Tereza Nunes
Perchlorate is a widespread endocrine disruptor that was previously correlated with increased serum TSH levels and decreased thyroid hormones production both in animals and humans. Even so, the regulation of gene/protein expression in the hypothalamus, pituitary and thyroid by chronic perchlorate exposure was not completely elucidated. Therefore, this study aimed to investigate the underlying mechanisms involved in the disruption of hypothalamus-pituitary-thyroid axis by chronic perchlorate exposure. Male Wistar rats were treated or not with NaClO4 in the drinking water (35 mg/Kg/day) for 60 days...
November 15, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29135079/cigarette-smoke-extract-and-isoprene-resulted-in-the-induction-of-apoptosis-and-autophagy-in-human-placenta-choriocarcinoma-jeg-3-cells
#5
Hae-Miru Lee, Kyung-Chul Choi
In this study, the effects of cigarette smoke (CS) on the induction of apoptosis via reactive oxygen species (ROS) production and endoplasmic reticulum stress (ER stress) of JEG-3 human choriocarcinoma cells were examined to confirm the relationship between CS and placenta development. Upon TUNEL assay, CS extract (3R4F; 0.3 and 2.1 μM) increased JEG-3 apoptosis. Western blot assay revealed that the protein expressions of p53, Bax, and CCAAT-enhancer-binding protein homologous protein (CHOP) increased, while the levels of Bcl-2 were reduced following CS extract treatment...
November 14, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29134746/fenofibrate-induced-ppar-alpha-expression-was-attenuated-by-oestrogen-receptor-alpha-overexpression-in-hep3b-cells
#6
Long-Bin Jeng, Bharath Kumar Velmurugan, Hsi-Hsien Hsu, Su-Ying Wen, Chia-Yao Shen, Chih-Hao Lin, Yueh-Min Lin, Ray-Jade Chen, Wei-Wen Kuo, Chih-Yang Huang
The physiological regulation of Oestrogen receptor α (ERα) and peroxisome proliferator-activated receptor alpha (PPARα) in Hepatocellular carcinoma (HCC) remains unknown. The present study we first treat the cells with fenofibrate and further investigated the possible mechanisms of 17β-estradiol (E2 ) and/or ERα on regulating PPARα expression. We also found higher PPARα expression in the tumor area than adjacent areas and subsequently compared PPARα expression in four different hepatic cancer cell lines...
November 14, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29134718/sirt1-exhibits-antioxidative-effects-in-ht22-cells-induced-by-tert-butyl-alcohol
#7
Junxiang Ma, Dongmei Song, Yuanyuan Zhang, Li Chen, Shixuan Zhang, Jiaxin Jia, Tian Chen, Caixia Guo, Lin Tian, Ai Gao, Piye Niu
Tertiary butyl alcohol (TBA) is a principal metabolite of methyl tertiary-butyl ether (MTBE), a common pollutant worldwide in the ground or underground water, which is found to produce nervous system damage. Nevertheless, few data regarding the effects of TBA has been reported. Studies indicated that oxidative stress plays a pivotal role in MTBE neurotoxic mechanism. Sirtuin 1 (SIRT1) has been reported to exert a neuroprotective effect on various neurologic diseases via resistance to oxidative stress by deacetylating its substrates...
November 14, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29119727/monosodium-glutamate-suppresses-the-female-reproductive-function-by-impairing-the-functions-of-ovary-and-uterus-in-rat
#8
Mukti Mondal, Kaushik Sarkar, Partha Pratim Nath, Goutam Paul
The aim of the present study was to examine the effect of monosodium glutamate (MSG) on the functions of ovary and uterus in rat. Virgin female rats of Charles Foster strain (120 gms approximately) were administrated MSG by oral gavage at a dose level of 0.8, 1.6, 2.4 gm/kgBW/day, respectively for 30 and 40 days duration. We observed a significant decrease in the duration of proestrus, estrus and metestrus phases, and increase in the duration of diestrus phase and diestrus index compared to control. We found significant increase in the levels of serum LH, FSH and estradiol in test groups of rat...
November 9, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29119715/glabridin-inhibits-the-activation-of-myofibroblasts-in-human-fibrotic-buccal-mucosal-fibroblasts-through-tgf-%C3%AE-smad-signaling
#9
Ping-Hui Lee, Pei-Ming Chu, Pei-Ling Hsieh, Hui-Wen Yang, Pin Ju Chueh, Yu-Feng Huang, Yi-Wen Liao, Cheng-Chia Yu
Oral submucous fibrosis (OSF) has been recognized as one of the oral potentially malignant disorders. Areca nut chewing is implicated in this pathological fibrosis, and it causes chronic inflammation and persistent activation of myofibroblasts. As yet, existing treatments only provide temporary symptomatic relief and there is a lack of an effective intervention to cure OSF. Therefore, development of approaches to ameliorate myofibroblast activities becomes a crucial objective to prevent the malignant progression of OSF...
November 9, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29110394/methylisothiazolinone-may-induce-cell-death-and-inflammatory-response-through-dna-damage-in-human-liver-epithelium-cells
#10
Eun-Jung Park, Sanghwa Kim, Jaerak Chang
Methylisothiazolinone (MIT) is a powerful biocide and preservative, which is widely used alone or in a 1:3 ratio with methylchloroisothiazolinone (MCIT) under the trade name of Kathons in the manufacture of numerous personal and household products. Considering that Kathons injected intravenously is distributed in the blood and then in the liver, we explored the toxic mechanism of MIT on human liver epithelium cells. At 24 h after exposure, MIT bound to the plasma membrane and the inner wall of vacuoles in the cells, and rupture of the cell membrane and nuclear envelop, autophagosome-like vacuoles formation and mitochondrial damage were observed...
November 7, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29105997/doxorubicin-induces-zak%C3%AE-overexpression-with-a-subsequent-enhancement-of-apoptosis-and-attenuation-of-survivability-in-human-osteosarcoma-cells
#11
Chien-Yao Fu, Yan-Shen Tseng, Ming-Cheng Chen, Hsi-Hsien Hsu, Jaw-Ji Yang, Chuan-Chou Tu, Yueh-Min Lin, Vijaya Padma Viswanadha, Wei-Wen Kuo, Chih-Yang Huang
Human osteosarcoma (OS) is a malignant cancer of the bone. It exhibits a characteristic malignant osteoblastic transformation and produces a diseased osteoid. A previous study demonstrated that doxorubicin (DOX) chemotherapy decreases human OS cell proliferation and might enhance the relative RNA expression of ZAK. However, the impact of ZAKα overexpression on the OS cell proliferation that is inhibited by DOX and the molecular mechanism underlying this effect are not yet known. ZAK is a protein kinase of the MAPKKK family and functions to promote apoptosis...
November 6, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29098808/casticin-impairs-cell-growth-and-induces-cell-apoptosis-via-cell-cycle-arrest-in-human-oral-cancer-scc-4-cells
#12
Guan-Ling Chou, Shu-Fen Peng, Ching-Lung Liao, Heng-Chien Ho, Kung-Wen Lu, Jin-Cherng Lien, Ming-Jen Fan, Kuang-Chi La, Jing-Gung Chung
Casticin, a polymethoxyflavone, present in natural plants, has been shown to have biological activities including anti-cancer activities. Herein, we investigated the anti-oral cancer activity of casticin on SCC-4 cells in vitro. Viable cells, cell cycle distribution, apoptotic cell death, reactive oxygen species (ROS) production, and Ca(2+) production, levels of ΔΨm and caspase activity were measured by flow cytometric assay. Cell apoptosis associated protein expressions were examined by Western blotting and confocal laser microscopy...
November 3, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29098770/influence-of-dehp-on-thyroid-sex-steroid-related-genes-and-gonadal-differentiation-in-rana-chensinensis-tadpoles
#13
Yuhui Zhang, Xinyi Li, Jinshu Gao, Hongyuan Wang
In the present study, responses of the Chinese brown frog (Rana chensinensis) to exposure to di-2-ethylhexyl phthalate (DEHP), a common plasticizer, during the larval period were characterized. The effects of DEHP on metamorphosis rate, thyroid hormone, thyroid histology and the expression of genes involved in the steroid hormone synthesis in gonad were investigated. Metamorphosis rate and 50 percent of the tadpoles to reach Gosner stage 42 (T0.5 ) were significantly slower in all DEHP groups. The thyroid glands of the tadpoles exposed to DEHP clearly exhibited colloid depletion...
November 3, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29087020/dibutyltin-depressed-immune-functions-via-nf-%C3%AE%C2%BAb-and-jak-stat-signaling-pathways-in-zebrafish-danio-rerio
#14
Chun-Nuan Zhang, Ji-Liang Zhang, Yong Huang, Hong-Tao Ren, Su-Hua Guan, Qing-Hui Zeng
Dibutyltin (DBT) is the degradation products of TBT, which is generally considered higher toxicity than TBT in the immune system. In order to learn more about the mechanisms of immune-toxic of DBT, we exposed zebrafish (Danio rerio) to 0, 1, 10 and 100 ng/L DBT for 8 weeks. At the end of the experiment, we determined the immune parameters and immune-related genes. The results showed that with an increase in TBT dose, lysozyme activities and IgM, C3, C4 content in intestine, skin and spleen were all significantly inhibited by the DBT exposure...
October 31, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29087013/diallyl-trisulfide-suppresses-doxorubicin-induced-cardiomyocyte-apoptosis-by-inhibiting-mapk-nf-%C3%AE%C2%BAb-signaling-through-attenuation-of-ros-generation
#15
Su-Ying Wen, Cheng-Yen Tsai, Pei-Ying Pai, Yi-Wei Chen, Yao-Chih Yang, Ritu Aneja, Chih-Yang Huang, Wei-Wen Kuo
BACKGROUND: Doxorubicin (Dox) is an effective anticancer agent. However, its effectiveness is limited by its cardiotoxic effects. It has also been reported that the mitogen-activated protein kinase family and NF-κB can be activated by Dox treatment. DATS has been shown to be a potent antioxidant with cardioprotective effects. We investigate whether Dox induces cardiac apoptosis through JNK- and ERK-dependent NF-κB upregulation that can be reduced by DATS treatment. METHODS AND MATERIAL: H9c2 cells were treated with 0...
October 31, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29068160/the-effect-of-fluoride-on-the-structure-function-and-proteome-of-intestinal-epithelia
#16
Flávia Amadeu de Oliveira, Lesley J MacVinish, Simran Amin, Duleni Herath, Pia Jeggle, Ioanna Mela, Maria Pieri, Chetanya Sharma, Gavin E Jarvis, Flávia M Levy, Mariana R Santesso, Zohaib N Khan, Aline L Leite, Rodrigo C Oliveira, Marília A R Buzalaf, J Michael Edwardson
Fluoride exposure is widespread, with drinking water commonly containing natural and artificially added sources of the ion. Ingested fluoride undergoes absorption across the gastric and intestinal epithelia. Previous studies have reported adverse gastrointestinal effects with high levels of fluoride exposure. Here, we examined the effects of fluoride on the transepithelial ion transport and resistance of three intestinal epithelia. We used the Caco-2 cell line as a model of human intestinal epithelium, and rat and mouse colonic epithelia for purposes of comparison...
October 25, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29068127/the-preventive-effects-of-edible-folic-acid-on-cardiomyocyte-apoptosis-and-survival-in-early-onset-triple-transgenic-alzheimer-s-disease-model-mice
#17
Kuan-Ho Lin, Chih-Hao Chiu, Wei-Wen Kuo, Da-Tong Ju, Chia-Yao Shen, Ray-Jade Chen, Chien-Chung Lin, Vijaya Padma Viswanadha, Jian-Sheng Liu, Rwei-Fen S Huang, Chih-Yang Huang
In recent years, neuropathological and epidemiological studies have indicated an association between Alzheimer's disease (AD) and several cardiovascular risk factors. In this study, the cardio-protective effects of folic acid (FA) in early stage AD was elucidated using a triple-transgenic (3xTg) Alzheimer's mouse model. Eleven-month-old C57BL/6 mice and 3xTg mice were assigned to five groups. During the four-month treatment period, the low-FA treatment group received FA through their diet, and the high-FA treatment groups received 3 mg/dl folate in drinking water and were also gastric-fed 1...
October 25, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29064158/the-natural-compound-2-3-5-4-tetrahydroxystilbene-2-o-%C3%AE-d-glucoside-protects-against-adriamycin-induced-nephropathy-through-activating-the-nrf2-keap1-antioxidant-pathway
#18
En-Yuan Lin, Uyanga Bayarsengee, Ching-Chiung Wang, Yung-Hsiao Chiang, Chao-Wen Cheng
2,3,5,4'-Tetrahydroxystilbene-2-O-β-d-glucoside (THSG) is an active compound extracted from Polygonum multiflorum Thunb. This herb and radix Polygoni Multiflori preparata have been used to treat arteriosclerosis, hyperlipidemia, hypercholesterolemia, and diabetes for thousands of years. This study aimed to investigate the protective effects of THSG in an Adriamycin (AD)-induced focal segmental glomerulosclerosis (FSGS) mouse model and the underlying mechanisms in an in vitro system. Mice were treated with THSG (2...
October 24, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29055161/does-intranasal-instillation-tio2-cause-pulmonary-tumorigenesis-in-male-mice
#19
EDITORIAL
Peter Møller, Håkan Wallin, Flemming R Cassee, Steffen Loft
No abstract text is available yet for this article.
October 21, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29044990/transcriptome-analysis-for-uvb-induced-phototoxicity-in-mouse-retina
#20
Mi-Jin An, Chul-Hong Kim, Gyu-You Nam, Dae-Hyun Kim, Sangmyung Rhee, Sung-Jin Cho, Jung-Woong Kim
Throughout life, the human eye is continuously exposed to sunlight and artificial lighting. Ambient light exposure can lead to visual impairment and transient or permanent blindness. To mimic benign light stress conditions, Mus musculus eyes were exposed to low-energy UVB radiation, ensuring no severe morphological changes in the retinal structure post-exposure. We performed RNA-seq analysis to reveal the early transcriptional changes and key molecular pathways involved before the activation of the canonical cell death pathway...
October 17, 2017: Environmental Toxicology
journal
journal
34627
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"