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Cutaneous and Ocular Toxicology

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https://www.readbyqxmd.com/read/28743199/3-4-methylenedioxymethamphetamine-causes-cytotoxicity-on-661w-cells-through-inducing-macrophage-polarization
#1
Xin Liu, Li-Hui Zhan, Xiao-Hong Sun, Tao Zhang, Zhi-Li Liu, Xiao-Fang Liang, Fei Zhao, Fang Liu, Guang Zeng, Chun-Sheng Luan
The abuse of 3,4-methylenedioxymethamphetamine (MDMA), a psychedelic drug, can lead to a variety of disorders in neural system, including the death of retinal neural cells. MDMA at lower doses does not cause obvious cytotoxicity to photoreceptor cells, indicating potential indirect mechanisms which have not yet been elucidated. This study investigated the effect of MDMA at nontoxic concentration on macrophage activation state and its resultant toxicity to photoreceptor cells. Using a co-culture system, cytotoxicity was caused by MDMA on 661W cells after co-culturing with RAW264...
August 16, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28789573/the-protective-effect-of-fish-oil-against-cisplatin-induced-eye-damage-in-rat
#2
Burcu Gul Baykalir, Osman Ciftci, Aslı Cetin, Nese Basak Turkmen
Ocular toxicity induced by anticancer chemotherapy is not uncommon, but underestimated and under-reported. Visual changes have been attributed to a number of chemotherapeutic agents in humans. Cisplatin (CP), a heavy metal compound, is used in the treatment of many types of tumors. CP is known to produce non-specific blurred vision, papilledema and optic neuritis for high doses as well as cumulative dose regimens. The aim of this study was to investigate the possible beneficial effects of fish oil (FO) on eye tissue oxidative status and histological alterations against CP-induced in the rats...
August 8, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28724312/in-vitro-skin-decontamination-of-paraoxon-wet-type-cleansing-effect-of-selected-detergents
#3
Ruzena Pavlikova, Jan Misik, Jiri Cabal, Jan Marek, Kamil Kuca
The aim of this study was to determine optimal conditions for in vitro skin decontamination using water and detergents as decontamination agents and to test the cleansing efficiency of selected detergents. Experiments were performed using a peristaltic pump for showering of pig skin in modified static diffusion cells. Several conditions were tested including different flow rates (from 5 to 33 ml s(-1)), quantity of rinsing fluid (from 40 to 400 ml) and concentration of detergents (2; 5; 10%). Further, several types of detergents/commercial decontamination agents were evaluated under the selected conditions to find the most effective means of decontamination...
August 7, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28707485/common-and-uncommon-adverse-cutaneous-reactions-to-erlotinib-a-study-of-20-chinese-patients-with-cancer
#4
Huiling Zhu, Zhe Zhu, Weining Huang, Xiping Cheng, Jiaxi He, Chunping Xiong, Jiande Han
OBJECTIVE: This study presented common lesions with systemic toxicities and uncommon adverse cutaneous reactions such as anaphylactic dermatitis in patients undergoing treatment with erlotinib for the benefit of practicing dermatologists and oncologists. METHODS: Adverse cutaneous reactions associated with erlotinib were reported in 20 Chinese patients with cancer. RESULTS: Adverse cutaneous reactions reported included six cases of anaphylactic dermatitis, 12 cases of acneiform rash, nine cases of xerosis, five cases of nail changes and four cases of hair changes...
August 7, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28768445/single-walled-carbon-nanotube-multi-walled-carbon-nanotube-and-fe2o3-nanoparticles-induced-mitochondria-mediated-apoptosis-in-melanoma-cells
#5
Parvaneh Naserzadeh, Fatemeh Ansari Esfeh, Mahboubeh Kaviani, Khadigeh Ashtari, Raheleh Kheirbakhsh, Ahmad Salimi, Jalal Pourahmad
PURPOSE: Nanomaterials (NM) exhibit novel anticancer properties. MATERIALS AND METHODS: The toxicity of three nanoparticles that are currently being produced in high tonnage including single-walled carbon nanotube (SWCNT), multi-walled carbon nanotube (MWCNT) and Fe2O3 nanoparticles, were compared with normal and melanoma cells. RESULTS: All tested nanoparticles induced selective toxicity and caspase 3 activation through mitochondria pathway in melanoma cells and mitochondria cause the generating of reactive oxygen species (ROS), mitochondrial membrane potential decline (MMP collapse), mitochondria swelling and cytochrome c release...
August 2, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28743196/evaluation-of-sequential-effect-of-isotretinoin-on-the-hematologic-parameters-in-patients-with-acne-vulgaris
#6
Gulsum Gencoglan, Isil Inanir, Mine Miskioglu, Kamer Gunduz
PURPOSE: Isotretinoin is the most effective drug for acne with some side effects. Few studies exist regarding the effects of isotretinoin on hematological parameters with different results. Mostly, baseline values with a single value during or at the end of the treatment were compared. In this study, we aimed to determine the differences in hematological parameters during isotretinoin treatment until reaching the cumulative dose of 120 mg/kg. MATERIALS AND METHODS: The study included 118 patients with moderate-to-severe acne vulgaris...
July 25, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28737434/defining-the-timing-of-25-oh-d-rescue-following-nitrogen-mustard-exposure
#7
Lopa M Das, Amy M Binko, Zachary P Traylor, Lori Duesler, Kurt Q Lu
OBJECTIVE: Mass exposure to alkylating agents such as nitrogen mustard (NM), whether accidental or intentional as during warfare, are known to cause systemic toxicity and severe blistering from cutaneous exposure. Thus, establishing the timing and appropriate dose of any potential drug designed to reverse or impede these toxicities is critical for wound repair and survival. Our previous data demonstrates that a single intraperitoneal injection of low-dose 25-hydroxyvitamin D3 (25(OH)D) given as early as 1 hour following NM exposure is sufficient to rescue mice from pancytopenia and death...
July 24, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28707522/the-effect-of-endothelin-receptor-antagonists-in-the-endotoxin-induced-uveitis-rabbit-model
#8
Emine Esra Karaca, Feyzahan Uzun, Ergin Dileköz, Gökçe Sevim Öztürk Fincan, Sevim Ercan, Oğuz Kul, Emin Ümit Bağrıaçık, Meral Or
PURPOSE: To investigate the effect of Bosentan (non-selective endothelin receptor antagonist) and BQ123 (ETA receptor antagonist) on intraocular inflammation in an endotoxin-induced uveitis (EIU) rabbit model METHODS: Uveitis was induced by intravitreal injection of lipopolysaccharide (LPS). The animals were divided into 7 groups and there were 6 rabbits in each group (saline, saline and ethanol, Bosentan, BQ123, Lipopolysaccharide(LPS), Bosentan and LPS, BQ123 and LPS injected groups)...
July 14, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28707489/evaluation-of-microrna-responses-in-arpe-19-cells-against-the-oxidative-stress
#9
Lokman Ayaz, Erdem Dinç
PURPOSE: This study aimed to determine microRNA (miRNA) expression profile of human retinal pigment epithelium cell (ARPE-19) against the oxidative stress induced by hydrogen peroxide (H2O2). METHODS: ARPE-19 cells were incubated with different concentrations of H2O2 (200, 600 and 800 µM) for 18 hours, and then cell viability, vascular endothelial growth factor levels and total oxidant status were evaluated. Expressions of 1152 miRNA were determined by quantitative Real-Time PCR in each group...
July 14, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28707481/protective-effects-of-melatonin-and-memantine-in-human-retinal-pigment-epithelium-arpe-19-cells-against-2-ethylpyridine-induced-oxidative-stress-implications-for-age-related-macular-degeneration
#10
Handan Bardak, Abdülhadi Cihangir Uğuz, Yavuz Bardak
PURPOSE: To investigate the possible protective effects of melatonin and memantine (MMT) against 2-ethylpyridine (2-EP)-induced oxidative stress and mitochondrial dysfunction in human RPE (ARPE-19) cells in vitro. MATERIALS AND METHODS: The ARPE-19 cells were divided into seven groups. Oxidative stress was triggered by incubating the ARPE-19 cells with 30 μM of 2-EP for 24 h. Then, 200 μM of melatonin was administered over three days and 20 μM of MMT over six hours prior to the experiment...
August 3, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28697703/retrospective-analysis-of-the-effect-of-aflibercept-loading-dose-on-the-retinal-vessel-diameters-in-patients-with-treatment-naive-neovascular-amd
#11
Mehmet Tetikoğlu, Muhammed Mustafa Kurt, Hacı Murat Sağdık, Serdar Aktaş, Medine Aslı Yıldırım, Fatih Özcura
BACKGROUND: To evaluate the effects of intravitreal aflibercept (IVA) on retinal vessel diameters in patients with neovascular age-related macular degeneration (AMD). DESIGN, SETTING, AND PARTICIPANTS: A retrospective study conducted at the Kutahya Dumlupinar University Faculty of Medicine included fifteen eyes of fifteen patients with treatment naive neovascular AMD. METHODS: All eyes received IVA injections once per month for 3 months; untreated contralateral eyes were used as controls...
July 11, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28693384/eye-irritation-potential-palm-based-methyl-ester-sulphonates
#12
Nor Zuliana Yusof, Zafarizal Aldrin Azizul Hasan, Zulina Abd Maurad, Zainab Idris
Eye irritation tests are widely used to assess the ocular irritancy of chemicals. Measurement of eye irritancy is necessary for safety evaluation of both industrial and consumer products. The eye irritancy assessment of palm-based methyl ester sulphonates (MES) of different chain lengths; C12, C14, C16, C16:18 were evaluated using Top-Down approach strategy as suggested by European Centre for the Validation of Alternative Methods. The Bovine Corneal Opacity and Permeability test method (BCOP), OECD Test Guideline 437, was used as an initial step to study the inducing effect of palm-based MES on irreversible eye damage...
July 10, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28658977/n-hydroxymethylglycinate-with-edta-is-an-efficient-eye-drop-preservative-with-very-low-toxicity-an-in-vitro-comparative-study
#13
Martina Cristaldi, Melania Olivieri, Gabriella Lupo, Carmelina D Anfuso, Salvatore Pezzino, Dario Rusciano
PURPOSE: Preservatives are used in multi-dose ophthalmic topical medications in order to prevent contamination by bacteria and fungi. However, prolonged use of preserved eye drops, as it may happen in dry eye or glaucoma, may damage cells of the ocular surface. Therefore, an important goal is to find preservatives with low toxicity which are mild to host cells, still able to prevent drug contamination so to maintain their sterility and efficacy. Hence, aim of this study has been to compare the relative toxicity on a rabbit corneal cell line of a new preservative, made by the association of N-hydroxy-methyl-glycinate (NIG) with disodium-ethylene diamine tetra-acetate (EDTA), with other known and widely used eye-drops preservatives...
June 28, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28573874/role-of-mast-cells-in-the-induction-of-dry-skin-in-a-mouse-model-of-rheumatoid-arthritis
#14
Kenji Goto, Keiichi Hiramoto, Hijiri Kita, Kazuya Ooi
PURPOSE: Rheumatoid arthritis (RA) is known to induce dry skin as an extra-articular symptom. However, the mechanisms behind the induction are unclear. In this study, we utilized an arthritis mouse model to simulate RA to reveal the relationship between arthritis and dry skin. MATERIALS AND METHODS: DBA/1JJmsSlc control mice (n = 5) and DBA/1JJmsSlc collagen-induced arthritis mouse model (arthritis mice; n = 5) were used. We measured transepidermal water loss (TEWL) and capacitance to reveal the effect of arthritis on skin barrier function...
June 21, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28486855/the-effects-of-smoking-on-corneal-endothelial-cells-a-cross-sectional-study-on-a-population-from-isfahan-iran
#15
Khodayar Golabchi, Mohammad-Ali Abtahi, Ali Salehi, Hamidreza Jahanbani-Ardakani, Sara Ghaffari, Ziba Farajzadegan
PURPOSE: The aim of this study is to compare the effect of smoking in corneal endothelial cell number and morphology by specular microscopy on a non-smoker population. METHODS: Our cross-sectional study was performed on 150 participants from a non-smoker population. Non-contact specular microscopy (Tomey Corporation Inc., Nagoya, Japan) was performed in the center of the cornea of all subjects. The cell density (CD), average cell size (AVG), percent of hexagonality (HEX%) and central corneal thickness (CCT) were calculated and compared in both groups...
June 19, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28614955/systemic-effects-after-intravitreal-injection-of-bevacizumab-in-new-born-rabbit-eyes
#16
Yih-Shiou Hwang, Chi-Hsien Liu, Yin-Cheng Huang, Chih-Shan Chen, Tun-Lu Chen, Nan-Kai Wang, Yen-Po Chen, Kwan-Jen Chen, Chi-Chun Lai, Wei-Chi Wu
PURPOSE: To determine the systemic impact of intravitreal bevacizumab (IVB), an anti-vascular endothelium growth factor antibody, after injection into newborn rabbit eyes. MATERIALS AND METHODS: We used four groups of rabbits. Group 1 rabbits received a single injection of IVB starting from the age of 6 weeks. Group 2 rabbits received a single injection of balanced salt solution (BSS, 0.025 ml) and served as controls for group 1. Group 3 rabbits received 2 consecutive injections of IVB at the ages of 6 weeks and 10 weeks...
June 14, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28592159/taurine-prevents-ultraviolet-b-induced-apoptosis-in-retinal-ganglion-cells
#17
Wu Dayang, Pang Dongbo
BACKGROUND: Compatible osmolytes accumulation is an active resistance response in retina under ultraviolet radiation and hypertonicity conditions. OBJECTIVE: The purpose of this research is to investigate the protective role of taurine on retina under ultraviolet B radiation. METHODS: Osmolytes transporters was measured by quantitative realtime PCR. Osmolytes uptake was estimated by radioimmunoassay. Cell viability was caculated by MTT assay...
June 7, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28504010/effects-of-selective-serotonin-reuptake-inhibitors-on-intraocular-pressure-and-anterior-segment-parameters-in-open-angle-eyes
#18
Gamze Uçan Gündüz, Neslihan Parmak Yener, Oğuzhan Kılınçel, Cem Gündüz
PURPOSE: To evaluate the short- and long-term effects of selective serotonin reuptake inhibitors (SSRIs) on intraocular pressure (IOP) and anterior segment parameters in open angle eyes. MATERIALS AND METHODS: This cross-sectional study included 325 eyes of 166 subjects. Subjects were divided into three groups: Group 1 included 116 eyes of 58 patients receiving SSRIs for 1 week-6 months, Group 2 included 102 eyes of 53 patients receiving SSRIs for longer than 6 months and Group 3 included 107 eyes of 55 healthy subjects not receiving any drugs...
June 1, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28554225/lutein-improves-cell-viability-and-reduces-alu-rna-accumulation-in-hydrogen-peroxide-challenged-retinal-pigment-epithelial-cells
#19
You Sheng Chong, Chun Wai Mai, Chee Onn Leong, Lai Chun Wong
PURPOSE: Dysfunction of the microRNA (miRNA)-processing enzyme DICER1 and Alu RNA accumulation are linked to the pathogenesis of age-related macular degeneration (AMD). This study determined the optimal dose of lutein (LUT) and zeaxanthin (ZEA) to protect human retinal pigment epithelium (RPE) cells against hydrogen peroxide (H2O2). The effect of the optimal dose of LUT and ZEA as DICER1 and Alu RNA modulators in cultured human RPE cells challenged with H2O2 was investigated. MATERIALS AND METHODS: ARPE-19 cells were pre-treated with LUT, ZEA or both for 24 hours before 200 µM H2O2 challenge...
May 29, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28486821/oral-warfarin-affects-some-aspects-of-systemic-immunomodulation-with-topical-dinitrochlorobenzene-dncb-in-rats
#20
Aleksandra Popov Aleksandrov, Sandra Belij-Rammerstorfer, Ivana Mirkov, Vesna Subota, Jelena Kulas, Dragan Kataranovski, Milena Kataranovski
PURPOSE: The efficacy of topical dinitrochlorobenzene (DNCB) in the treatment of some skin dermatoses is based both on local and systemic effects. It is not known, however, whether it can be applied to patients receiving some other therapy associated with systemic immunomodulation. The aim of the present paper using a rat model was to examine whether oral warfarin (WF) intake, as shown by others and by us, had an immunomodulatory potential to interfere with effects of topical DNCB as systemic immunotherapy...
May 29, 2017: Cutaneous and Ocular Toxicology
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