journal
MENU ▼
Read by QxMD icon Read
search

Environmental Toxicology

journal
https://www.readbyqxmd.com/read/28444938/low-concentration-arsenite-activated-jak2-stat3-signal-and-increased-proliferative-factor-expressions-in-sv-huc-1cells-after-short-and-long-time-treatment
#1
Li Mengdan, Wang Chen, Liu Jieyu, Jin Peiyu, Wang Fei, Liu Shengnan, Xi Shuhua
Epidemiological studies have indicated that ingestion of inorganic arsenic resulted in increased risks of bladder cancer and chronic hyperproliferation could play a direct role in the development of cancer. This study examined the effects of arsenite on JAK2/STAT3 pathway and expressions of proliferation and anti-apoptosis factors. The results showed that long term exposure to low doses arsenite enhanced human uroepithelial cells (SV-HUC-1 cells) proliferation and BrdU positive rate was significant increased...
April 26, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28444933/synergistic-effect-of-carbon-nuclei-and-polyaromatic-hydrocarbons-on-respiratory-and-immune-responses
#2
Pratiti H Chowdhury, Gaku Kitamura, Akiko Honda, Takahiro Sawahara, Tomohiro Hayashi, Wataru Fukushima, Hitomi Kudo, Sho Ito, Seiichi Yoshida, Takamichi Ichinose, Kayo Ueda, Hirohisa Takano
Particulate matter with aerodynamic diameter ≤2.5 μm (PM2.5 ) is generally composed of carbon nuclei associated with various organic carbons, metals, ions and biological materials. Among these components, polyaromatic hydrocarbons (PAHs) such as benzo(a)pyrene (BaP) and quinones have detrimental effects on airway epithelial cells and immunodisrupting effects, which leads to the exacerbation of respiratory allergies. The effects of PAHs and the carbon nuclei, separately as well as in combination, remain to be established...
April 26, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28444932/the-association-of-lamb1-polymorphism-and-expression-changes-with-the-risk-of-coal-workers-pneumoconiosis
#3
Xiaoming Ji, Baiqun Wu, Ruhui Han, Jingjin Yang, Esther Ayaaba, Ting Wang, Lei Han, Chunhui Ni
BACKGROUND: Pneumoconiosis is a serious occupational disease worldwide, which is characterized by irreversible and diffuse lung fibrotic lesions. Laminin beta 1(LAMB1) is widely expressed in tissues and it is crucial for both lung morphogenesis and physiological function. In this study, we explored the association between LAMB1 rs4320486 and risk of pneumoconiosis in a Chinese population, as well as its mechanisms. METHODS: In this case-control study, 600 CWP patients and 605 controls were genotyped for the LAMB1 rs4320486 polymorphism using TaqMan methods...
April 26, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28444915/hydroquinone-induces-tk6-cell-growth-arrest-and-apoptosis-through-parp-1-p53-regulatory-pathway
#4
Hao Luo, Hairong Liang, Jiajia Chen, Yongchun Xu, Yuting Chen, Longmei Xu, Lin Yun, Jiaxian Liu, Hui Yang, Linhua Liu, Jianming Peng, Zhidong Liu, Lin Tang, Wen Chen, Huanwen Tang
Hydroquinone (HQ), one of the most important metabolites derived from benzene, induces cell cycle arrest and apoptosis. Poly(ADP-ribose) polymerase-1 (PARP-1) participates in various biological processes, including DNA repair and cell cycle regulation. To explore whether PARP-1 regulatory pathway mediated HQ-induced cell cycle arrest and apoptosis, we assessed the effect of PARP-1 suppression on induction of apoptosis analyzed by FACSCalibur flow cytometer in PARP-1 deficientTK6 cells (TK6-shPARP-1). We observed an increase in the fraction of cells in G1 phase by 7...
April 26, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28444820/casticin-impairs-cell-migration-and-invasion-of-mouse-melanoma-b16f10-cells-via-pi3k-akt-and-nf-%C3%AE%C2%BAb-signaling-pathways
#5
Yung-Luen Shih, Hsiao-Min Chou, Hsiu-Chen Chou, Hsu-Feng Lu, Yung-Lin Chu, Hung-Sheng Shang, Jing-Gung Chung
Casticin, a polymethoxyflavone, is one of the major active components obtained from Fructus viticis, which have been shown to have anticancer activities including induce cell apoptosis in human cancer cells. The aim of this study was to investigate the molecular mechanisms by which casticin inhibits cell migration and invasion of mouse melanoma B16F10 cells. Cell viability was examined by MTT assay and the results indicated that casticin decreased the total percentages of viable cells in dose-dependent manners...
April 26, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28398611/regulation-of-mir-21-expression-in-human-melanoma-via-uv-ray-induced-melanin-pigmentation
#6
Kuan-Yu Lin, Chien-Min Chen, Cheng-You Lu, Chun-Yuan Cheng, Yu-Hsin Wu
Excessive environmental ultraviolet (UV) radiation produces genetic mutations that can lead to skin cancer. This study was designed to assess the potential inhibitory activity of microRNA-21 (miR-21) on the UV irradiation-stimulated melanogenesis signal pathway in melanoma cells. The molecular mechanism of miR-21-induced inhibitory activity on UV-ray-stimulated melanogenesis-regulating proteins was examined in A375.S2 human melanoma and B16F10 mouse melanoma cells. UV irradiation for 30 min induced melanogenesis signal pathway by increasing melanin production and the number of A375...
April 11, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28383207/nimbolide-induces-apoptosis-in-human-nasopharyngeal-cancer-cells
#7
Su-Yu Chien, Ching-Hui Hsu, Chia-Chieh Lin, Yi-Ching Chuang, Yu-Sheng Lo, Yi-Ting Hsi, Ming-Ju Hsieh, Mu-Kuan Chen
Nasopharyngeal carcinoma (NPC), a tumor arising from epithelial cells that cover the surface and line the nasopharynx, is a rare malignancy worldwide but is prevalent in certain geographical areas, such as Southern Asia (Taiwan, Hong Kong, Singapore, Malaysia, and Southern China) and North Africa. Despite advances in diagnostic techniques and improvements in treatment modalities, the prognosis of NPC remains poor. Therefore, an effective chemotherapy regimen that enhances tumor sensitivity to chemotherapeutics is urgently required...
April 6, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28371364/muscarinic-receptors-mediate-the-endocrine-disrupting-effects-of-an-organophosphorus-insecticide-in-zebrafish
#8
João Gabriel Santos da Rosa, Heloísa Helena de Alcântara Barcellos, Michele Fagundes, Cristiane Variani, Mainara Rossini, Fabiana Kalichak, Gessi Koakoski, Thiago Acosta Oliveira, Renan Idalencio, Rafael Frandoloso, Angelo L Piato, Leonardo José Gil Barcellos
The glucocorticoid cortisol, the end product of hypothalamus-pituitary-interrenal axis in zebrafish (Danio rerio), is synthesized via steroidogenesis and promotes important physiological regulations in response to a stressor. The failure of this axis leads to inability to cope with environmental challenges preventing adaptive processes in order to restore homeostasis. Pesticides and agrichemicals are widely used, and may constitute an important class of environmental pollutants when reach aquatic ecosystems and nontarget species...
April 3, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28371048/duchesnea-indica-extract-suppresses-the-migration-of-human-lung-adenocarcinoma-cells-by-inhibiting-epithelial-mesenchymal-transition
#9
Pei-Ni Chen, Shun-Fa Yang, Cheng-Chia Yu, Chin-Yin Lin, Shih-Han Huang, Shu-Chen Chu, Yih-Shou Hsieh
Epithelial-mesenchymal transition (EMT) is a process through which epithelial cells are transformed into mesenchymal cells; EMT diminishes cell polarity and cell-cell adhesion in cancer cells, leading to enhanced migratory and invasive properties. In this experiment, zymography, cell invasion, and migration assays were performed. Results indicated that Duchesnea indica extracts (DIE) inhibited highly metastatic A549 and H1299 cells by reducing the secretions of matrix metalloproteinase-2 and urokinase-type plasminogen activator...
April 3, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28370894/antrodia-camphorata-attenuates-cigarette-smoke-induced-ros-production-dna-damage-apoptosis-and-inflammation-in-vascular-smooth-muscle-cells-and-atherosclerosis-in-apoe-deficient-mice
#10
Hsin-Ling Yang, Mallikarjuna Korivi, Cheng-Hsien Chen, Wei-Jung Peng, Chee-Shan Chen, Mei-Ling Li, Li-Sung Hsu, Jiunn-Wang Liao, You-Cheng Hseu
Cigarette smoke exposure activates several cellular mechanisms predisposing to atherosclerosis, including oxidative stress, dyslipidemia, and vascular inflammation. Antrodia camphorata, a renowned medicinal mushroom in Taiwan, has been investigated for its antioxidant, anti-inflammatory, and antiatherosclerotic properties in cigarette smoke extracts (CSE)-treated vascular smooth muscle cells (SMCs), and ApoE-deficient mice. Fermented culture broth of Antrodia camphorata (AC, 200-800 µg/mL) possesses effective antioxidant activity against CSE-induced ROS production...
April 3, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28371286/impairment-of-preimplantation-and-postimplantation-embryonic-development-through-intrinsic-apoptotic-processes-by-ginsenoside-rg1-in-vitro-and-in-vivo
#11
Madonna Rica Anggelia, Wen-Hsiung Chan
Ginsenoside Rg1, which is the most abundant compound found in Asian ginseng (Panax ginseng), has demonstrated various pharmacological actions, including neuroprotective, immune-stimulatory, and antidiabetic effects. Pregnant women, especially in the Asian community, consume ginseng as a nutritive supplement. Thus, the effects of ginsenoside-Rg1 on embryonic development need to be investigated, such as in a mouse model. As previous investigations have found that ginsenoside Rg1 appears to either trigger or prevent apoptosis in different cell lines, the effects of this agent on apoptosis remain to be clarified...
March 29, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28371137/proanthocyanidin-protects-against-cisplatin-induced-oxidative-liver-damage-through-inhibition-of-inflammation-and-nf-%C3%AE%C2%BA%C3%AE-tlr-4-pathway
#12
Nagla A El-Shitany, Basma Eid
Although cisplatin (CIS) is a highly effective anticancer drug, hepatotoxicity is one of the most common adverse effects associated with its use. Recently, reactive oxygen species (ROS) and inflammation are suggested to be key factors in the pathophysiology of CIS-induced acute liver damage. The aim of this study is to investigate the possible protective effect of proanthocyanidin (PRO) against CIS-induced acute hepatotoxicity. Rats were divided into four groups: 1, Control; 2, PRO; 3, CIS; and 4, PRO + CIS...
March 29, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28303633/cobalt-chloride-exposure-dose-dependently-induced-hepatotoxicity-through-enhancement-of-cyclooxygenase-2-cox-2-b-cell-associated-protein-x-bax-signaling-and-genotoxicity-in-wistar-rats
#13
Omolola Victoria Awoyemi, Ufuoma Jowafe Okotie, Ademola Adetokunbo Oyagbemi, Temidayo Olutayo Omobowale, Ebunoluwa Racheal Asenuga, Olufunke Eunice Ola-Davies, Blessing Seun Ogunpolu
Cobalt chloride (CoCl2 ) is one of the many environmental contaminants, used in numerous industrial sectors. It is a pollutant with deadly toxicological consequences both in developing and developed countries. We investigated toxicological impact of CoCl2 on hepatic antioxidant status, apoptosis, and genotoxicity. Forty Wistar rats were divided into four groups, 10 rats per group: Group 1 served as control and received clean tap water orally; Group 2 received CoCl2 solution (150 mg/L); Group 3 received CoCl2 solution (300 mg/L); and Group 4 received CoCl2 (600 mg/L) in drinking water for 7 days, respectively...
March 17, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28296077/cadmium-and-chlorpyrifos-inhibit-cellular-immune-response-in-spleen-of-rats
#14
Pan Wang, Jin Wang, Ying-Jian Sun, Lin Yang, Yi-Jun Wu
Cadmium (Cd) and chlorpyrifos (CPF) are common pollutants coexisting in the environment, and both of them have been reported to have immunotoxicity to organisms. However, the joint effects of these two chemicals on the immune system are still unknown. In this study, we used CdCl2 and CPF to study their combined effects on immune functions in the spleen of rats. In in vivo experiments, SD rats were exposed to different doses of CdCl2 (0.7 and 6 mg kg(-1) body weight/day) and CPF (1.7 and 15 mg kg(-1) body weight/day) or their combinations for consecutive 28 days...
March 15, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28296042/nickel-sulfate-induced-apoptosis-via-activating-ros-dependent-mitochondria-and-endoplasmic-reticulum-stress-pathways-in-rat-leydig-cells
#15
Lingyue Zou, Li Su, Yifan Sun, Aijie Han, Xuhong Chang, An Zhu, Fangfang Liu, Jin Li, Yingbiao Sun
Nickel can induce apoptosis of testicular Leydig cells in mice, whereas the mechanisms remain unclear. In this study, we investigated the role of nickel-induced reactive oxygen species (ROS) generation in mitochondria and endoplasmic reticulum stress (ERS) mediated apoptosis pathways in rat Leydig cells. Fluorescent DCF and Annexin-V FITC/PI staining were performed to measure the production of ROS and apoptosis in Leydig cells. RT-qPCR and Western blot were conducted to analyze the key genes and proteins involved in mitochondria and ERS apoptotic pathways...
March 15, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28295950/sulforaphane-attenuates-di-n-butylphthalate-induced-reproductive-damage-in-pubertal-mice-involvement-of-the-nrf2-antioxidant-system
#16
Xu-Ping Jiang, Jing-Yuan Tang, Zhen Xu, Peng Han, Zhi-Qiang Qin, Cheng-di Yang, Shang-Qian Wang, Min Tang, Wei Wang, Chao Qin, Yang Xu, Bai-Xin Shen, Wei-Min Zhou, Wei Zhang
di-N-butylphthalate (DBP) is a ubiquitous environmental pollutant used for plastic coating and in the cosmetics industry. It has toxic effects on body health, especially the male reproductive system. Here, we investigated the effects of DBP on the male reproductive system of pubertal mice and explored the protective role of sulforaphane (SFN). The results showed that DBP significantly reduced the anogenital distance, testicular weight, sperm count and motility, and plasma and testicular testosterone levels and significantly increased the oxidative stress, sperm abnormalities, and testicular cell apoptosis...
March 15, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28258635/cinnamomum-cassia-extracts-reverses-tgf-%C3%AE-1-induced-epithelial-mesenchymal-transition-in-human-lung-adenocarcinoma-cells-and-suppresses-tumor-growth-in-vivo
#17
Chin-Yin Lin, Yi-Hsien Hsieh, Shun-Fa Yang, Shu-Chen Chu, Pei-Ni Chen, Yih-Shou Hsieh
Metastasis is the most common cause of cancer-related mortality in patients, and epithelial-mesenchymal transition (EMT) is essential for cancer metastasis and antidrug resistance. Cinnamomum cassia has several antioxidative, anti-inflammatory, and anticancer biological effects. However, the anti-EMT effect of C. cassia in human lung carcinoma is rarely reported. In this study, we determined whether C. cassia extracts (CCE) reduces the EMT and tumor growth of human lung adenocarcinoma cells. CCE inhibited the transforming growth factor (TGF)-β1-induced cell motility and invasiveness of A549 and H1299 cells by repressing matrix metalloproteinase-2 and urokinase-type plasminogen activator as well as impaired cell adhesion to collagen...
March 4, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28258630/everolimus-suppresses-invasion-and-migration-of-renal-cell-carcinoma-by-inhibiting-fak-activity-and-reversing-epithelial-to-mesenchymal-transition-in-vitro-and-in-vivo
#18
Sheng-Wen Wu, Pei-Ni Chen, Chin-Yin Lin, Yih-Shou Hsieh, Horng-Rong Chang
Renal cell carcinoma (RCC) is the most common type of kidney cancer in adults and the major cause of mortality in urological cancer. Most patients with RCC are asymptomatic until the disease is advanced and unresectable. In this situation, systemic therapy with immunotherapy or molecularly targeted therapy agents play an important role in therapeutic strategy. Everolimus (EVE), an m-TOR inhibitor, has the potential to inhibit tumor progression at multiple levels and is indicated for the treatment of advanced RCC in patients whose disease has metastasis...
March 4, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28251819/cis-bifenthrin-induces-immunotoxicity-in-adolescent-male-c57bl-6-mice
#19
Xia Wang, Xingli Gao, Bingnan He, Jiawei Zhu, Huihui Lou, Qinglian Hu, Yuanxiang Jin, Zhengwei Fu
Bifenthrin (BF) is an important synthetic pyrethroid. Previous studies have demonstrated that cis-BF exhibits toxic effects on development, the neurological, reproductive and endocrine system. In this study, we evaluated the immunotoxicity caused by cis-BF in adolescent male C57BL/6 mice. Mice were exposed orally to 0, 5, 10, and 20 mg/kg/d for 3 weeks. The results showed that body weight, spleen weight, and splenic cellularity decreased in mice exposed to 20 mg/kg/d cis-BF. Additionally, we found that the mRNA levels of the pro-inflammatory factors IL-1β, IL-6, CXCL-1, and TNF-α, in peritoneal macrophages, the spleen, and the thymus were inhibited in the cis-BF-treated groups...
March 2, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28251797/effect-of-methomyl-on-sex-steroid-hormone-and-vitellogenin-levels-in-serum-of-male-tilapia-oreochromis-niloticus-and-recovery-pattern
#20
Shun-Long Meng, Li-Ping Qiu, Geng-Dong Hu, Li-Min Fan, Chao Song, Yao Zheng, Wei Wu, Jian-Hong Qu, Dan-Dan Li, Jia-Zhang Chen, Pao Xu
Tilapia were exposed to sub-lethal concentrations of 0, 0.2, 2, 20 or 200 μg/L for 30 days, then transferred to methomyl-free water for 18 days. E2 , T, 11-KTand VTG in serum were examined. There were no significant changes in all the parameters in serum of tilapia exposed to 0.2 μg/L and 2 μg/L methomyl compared to the control. However, 20 μg/L and 200 μg/L have the potential to disrupt the endocrine system of male tilapia, as shown by its ability to increase VTG and E2 and decrease T and 11-KT in serum...
March 2, 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"