Read by QxMD icon Read

Cutaneous and Ocular Toxicology

Reşat Duman, Ayhan Vurmaz
PURPOSE: The exact etiopathogenesis of steroid-induced cataracts (SIC) is not known. Although oxidative stress is one of the most acceptable hypotheses, the exact molecular events in steroid-induced oxidative events in the lens need to be clarified. In addition, to the best of our knowledge, the innate immune system components in SIC formation have not been studied previously. The aim of the present study was to study the oxidative system and the innate immune system components in the cataractous lenses of a developing chick embryo SIC model...
March 15, 2018: Cutaneous and Ocular Toxicology
Lihua Zhu, Jia Li, Wu Dayang, Li Bing
PURPOSE: To investigate the protective effect of beta-casomorphin-7 (β-CM-7) in oxidative stressed human lens epithelial cells (HLECs) and to explore the possible mechanism for oxidative stress in human lens epithelial cells induced by high glucose. METHODS: We used HLECs to determine the effect of different concentrations of β-CM-7 on cell viability by 3-(4, 5-dimethyl-2-thiazolyl)-2, 5-diphenyl-2-H-tetrazolimol/L bromide (MTT) assay. We used flow cytometry to determine the content of reactive oxygen species (ROS) induced by oxidative stress and a bioassay kit to determine the oxidant malondialdehyde (MDA) and antioxidant enzyme superoxide dismutase (SOD) levels...
March 8, 2018: Cutaneous and Ocular Toxicology
A Thinnes, H F Merk, G Wurpts, S Röseler, S Lehmann, K Tenbrock, J M Baron, G Balakirski
BACKGROUND: Drug hypersensitivity reactions of immediate type pose a challenging problem, especially, if standard diagnostic procedures do not lead to conclusive results. The aim of this investigation is to identify, whether basophil activation test (BAT) is able to provide additional benefit in the diagnostic evaluation of immediate type drug hypersensitivity reactions to antibiotics in comparison to the routine allergological diagnostic methods. MATERIALS AND METHODS: We investigated patients, which presented to the Department of Dermatology and Allergology of the University Hospital of RWTH Aachen in Germany for diagnostic workup of type I allergic reactions to antibiotics during the period from 2009 to 2012...
March 6, 2018: Cutaneous and Ocular Toxicology
Mustafa Eren, Murat Kucukevcilioglu, Ali Hakan Durukan
PURPOSE: To examine retinal sensitivity in patients on hydroxychloroquine (HCQ) with no evidence of retinopathy. MATERIALS AND METHODS: 70 patients on HCQ and 30 healthy control subjects were included prospectively. All subjects underwent complete ophthalmic examination including best corrected visual acuity, tonometry, color vision testing, biomicroscopy of anterior segment, dilated fundoscopy, 10-2 visual field testing and Spectral domain optical coherence tomography...
March 1, 2018: Cutaneous and Ocular Toxicology
Wu Dayang, Pang Dongbo
BACKGROUND: The massive uptake of organic compatible osmolytes is a self-protective response to multiple stressors. OBJECTIVE: This study aimed to determine the protective effects of the osmolyte taurine against blue light-induced apoptosis in retinal neuronal cells in vitro. METHODS: Real-time PCR was used to measure osmolyte transport. Radioimmunoassays were performed to measure osmolyte uptake. Cell Counting Kit-8 assays were conducted to measure cellular viability...
February 27, 2018: Cutaneous and Ocular Toxicology
Shou-Long Hu, Chao-Pan Zheng
As a severe photoreceptor-degenerative disease, retinitis pigmentosa is currently incurable and eventually leads to partial or complete blindness. (3R)-5,6,7-trihydroxy-3-isopropyl-3-methylisochroman-1-one (TIM) is a novel antioxidant isolated from the plant of Alpinia katsumadai Hayata, with protective effects on photoreceptor cells against lipoteichoic acid-induced damage through inhibiting oxidative stress. The present study was to further demonstrate whether TIM could ameliorate retinal degeneration of rd10 mice, a mouse model of retinitis pigmentosa...
February 25, 2018: Cutaneous and Ocular Toxicology
Srijita Chakrabarti, Johirul Islam, Hemanga Hazarika, Bhaskar Mazumder, Pakalapati Srinivas Raju, Pronobesh Chattopadhyay
In the present investigation, the safety of novel combinational silver sulfadiazine-bFGF loaded hydrogel was assured by performing acute skin irritation, sensitization, acute dermal toxicity and eye irritation in compliance with the Organization for Economic Co-operation and Development guidelines. In the skin irritation study, placebo, test and positive control (0.8% w/v aqueous solution of formaldehyde) were applied on New Zealand rabbits and monitored for abnormal skin responses including erythema and edema...
February 25, 2018: Cutaneous and Ocular Toxicology
Nurdan Gamze Taşlı, Turgay Uçak, Yücel Karakurt, Ferda Keskin Çimen, Aslı Özbek Bilgin, Nezahat Kurt, Halis Süleyman
AIM: To determine the role of rutin in prevention of cisplatin induced retinal and optic nerve injury in an experimental study. MATERIAL AND METHODS: Totally 18 albino Wistar male rats were assigned into 3 groups, as follows: healthy controls (HC group), only cisplatin administered group for 14 days (CIS group), and Rutin + cisplatin administered group for 14 days (RC group). Blood samples were obtained from animals just before the scarification. Serum malondialdehyde (MDA), Myeloperoxidase (MPO), total glutathione (tGSH), Superoxide Dismutase (SOD), interleukin 1 beta (IL-1β) and tumor necrosis factor alpha (TNF-α) levels were investigated...
February 19, 2018: Cutaneous and Ocular Toxicology
Qi-Di Hu, Ling-Li Xu, Yan Gong, Guo-Hai Wu, Yu-Wen Wang, Shan-Jun Wu, Zhe Zhang, Wei Mao, Yu-Sheng Zhou, Qin-Bo Li, Jian-Shu Yuan
Lysergic acid diethylamide (LSD), a classical hallucinogen, was used as a popular and notorious substance of abuse in various parts of the world. Its abuse could result in long-lasting abnormalities in retina and little is known about the exact mechanism. This study was to investigate the effect of LSD on macrophage activation state at non-toxic concentration and its resultant toxicity to photoreceptor cells. Results showed that cytotoxicity was caused by LSD on 661W cells after co-culturing with RAW264.7 cells...
January 3, 2018: Cutaneous and Ocular Toxicology
Andrea Heidinger, Dieter Franz Rabensteiner, Jasmin Rabensteiner, Petra Kieslinger, Jutta Horwath-Winter, Edith Stabentheiner, Regina Riedl, Andreas Wedrich, Otto Schmut
CONTEXT: Contact with pollen is the major reason for the development of allergic symptoms on the ocular surface leading to a significant increase of allergic diseases worldwide. Environmental changes such as increased ultraviolet (UV) radiation and air pollution are discussed as contributory causes for this increase. OBJECTIVE: We investigated the effect of UV light on the histamine content of pollen and examined if an irradiation of pollen affects the viability and proliferation of conjunctival cells...
December 27, 2017: Cutaneous and Ocular Toxicology
Huang Jianfeng, Wang Yueqian, Wang Lunan, Pan Yang, Chen Tong
PURPOSE: To investigate the effect of microRNA-16 on hypoxia-induced VEGF expression of ARPE-19 cells Methods: ARPE-19 cells were cultivated under normoxia and hypoxia state. At 0h, 12h, 24h and 48h after cultivation, the supernate of the culture medium were separated to test the VEGF secretion by ELISA, and the cells were purified to measure the expression of VEGF mRNA and microRNA-16 by qRT-PCR; microRNA-16 mimic was then transfected into ARPE-19 cells by the Hiperfect transfection reagent, a liposome transfection system...
December 13, 2017: Cutaneous and Ocular Toxicology
Yalda Arast, Nina Seyed Razi, Melika Nazemi, Enayatollah Seydi, Jalal Pourahmad
PURPOSE: Melanoma is a highly aggressive and deadly cancer with a poor prognosis given its drug resistance. A defect in apoptosis is one of the key mechanisms that contribute to drug resistance in Melanoma. An important sea marine animal is the Holothuria parva, also known as the sea cucumber, which has various pharmacological activities. Compounds obtained from sea cucumbers have shown to have anticancer activity through induction of apoptosis singling. MATERIALS AND METHODS: In the present study, selective toxicity and apoptotic effect of three extracts of H...
December 28, 2017: Cutaneous and Ocular Toxicology
En-Hui Yi, Feng Xu, Peng Li
OBJECTIVE: Exposure to oxidative stress will lead to the progression of retinal degenerative diseases, and unfortunately the exact mechanisms have not been fully understood. In this study, the protective effects of (3R)-5,6,7-trihydroxy-3-isopropyl-3-methylisochroman-1-one (TIM) against the lipoteichoic acid (LTA)-induced cell damage in mouse photoreceptor-derived 661W cells were investigated. METHODS: 661W cells were pre-treated with TIM at different concentrations (0...
December 11, 2017: Cutaneous and Ocular Toxicology
Silvana Cervantes-Yépez, Lorena Sofía López-Zepeda, Teresa I Fortoul
BACKGROUND: Vanadium (V) is a transition metal adhered to suspended particles. Previous studies demonstrated that V inhalation causes oxidative stress in the ependymal epithelium, the choroid plexus on brain lateral ventricles and in the retina. Inhaled-V reaches the eye´s retina through the systemic circulation; however, its effect on the retina has not been widely studied. The Müller glial cell provides support and structure to the retina, facilitates synapses and regulates the microenvironment and neuronal metabolism...
December 11, 2017: Cutaneous and Ocular Toxicology
Marilita M Moschos, Konstantinos Laios, Sofia Androudi, Dimitrios S Ladas, Irini P Chatziralli
OBJECTIVE: The purpose of this experimental study was to investigate the role of vitamin supplements (Ocuvite, Vitalux Omega, and Nutrof Total) as possible inhibitors of the onset of age-related macular degeneration (AMD). MATERIALS AND METHODS: The anti-aggregating effect of each vitamin was determined against four accumulative factors namely, platelet activating factor (PAF), adenosine diphosphate (ADP), thrombin receptor-activating peptide (TRAP), and arachidonic acid (AA) in the platelet rich plasma (PRP) of healthy volunteers...
December 6, 2017: Cutaneous and Ocular Toxicology
Yue Zheng, Paru R Chaudhari, Howard I Maibach
In this article we summarize the recently described allergens responsible for allergic contact dermatitis due to ophthalmic drugs and contact lens solutions, and emphaage the need on how to perform diagnostic testing in this special clinical entity.
December 2017: Cutaneous and Ocular Toxicology
Ali Riza Turkoglu, Neslihan Parmak Yener, Soner Coban, Muhammet Guzelsoy, Ali Emul, Murat Demirbas, Hakan Demirci
PURPOSE: To investigate the effect of trospium chloride, which has an anticholinergic effect, used in overactive bladder (OAB) treatment on the intraocular pressure (IOP) and tear secretion after 12 weeks of treatment. MATERIALS AND METHODS: This prospective study was performed at a single center between October 2014 and January 2016. A detailed history was obtained from the female OAB patients at the eye outpatient department. After checking the exclusion criteria, oral trospium chloride 30 mg bd was started...
December 2017: Cutaneous and Ocular Toxicology
Fang Wang, Yu-Kun Zhao, Minyi Li, Zhe Zhu, Xingqi Zhang
PURPOSE: Morbidity due to cutaneous adverse drug reactions (CADRs) is quite common. The specific culprit drugs change over time and clinicians must be kept informed with updated knowledge, thus preventing potential CADRs. This retrospective study is a survey of CADRs encountered in a hospital-based population in Southern China during three time intervals, from 1984 to 2015. MATERIALS AND METHODS: The clinical records were review of 306 patients with CADRs who were admitted to our hospital from 2011 to 2015...
December 2017: Cutaneous and Ocular Toxicology
Galina Balakirski, Hans F Merk
Important changes in the understanding and management of drug hypersensitivity reactions during the last years result from the increasing importance of biologics in medical practice, which differ in their spectrum of adverse drug reactions (ADRs) from the classical covalent drugs. With regard to covalent drugs, ampicillin and amoxicillin as well as clavulanic acid play an increasing role among ADRs to betalactam antibiotics. Fluoroquinolones are mainly the cause of anaphylactic and photosensitivity reactions...
December 2017: Cutaneous and Ocular Toxicology
Selma Emre, Duriye Deniz Demirseren, Murat Alisik, Akin Aktas, Salim Neselioglu, Ozcan Erel
PURPOSE: Recently, increased reactive oxygen species (ROS), reduced antioxidant capacity, and oxidative stress have been suggested in the pathogenesis of psoriasis. The aim of this study to evaluate the thiol/disulfide homeostasis in patients with psoriasis. MATERIALS AND METHODS: Ninety patients with psoriasis who did not receive any systemic treatment in the last six  months were included in the study. Seventy-six age and gender-matched healthy volunteers served as control group...
December 2017: Cutaneous and Ocular Toxicology
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"