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Dilraj S Grewal, Sharon Fekrat
The authors present an incidentally noted pigmented anterior vitreous cyst in an asymptomatic male adult. Observation was elected. Stability during the course of 2 years and mobility of the vitreous cyst using dynamic imaging are demonstrated. [Ophthalmic Surg Lasers Imaging Retina. 2016;47:975-977.].
October 1, 2016: Ophthalmic Surgery, Lasers & Imaging Retina
Rohan Chawla, Kanhaiya Mittal, Rajpal Vohra
The authors report the use of optical coherence tomography angiography (OCTA) (DRI OCT Triton; Topcon, Tokyo, Japan) to localize, characterize, and confirm the presence of a choroidal neovascular membrane in a patient of focal choroidal excavation (FCE) with recent-onset metamorphopsia and visual blurring. En face OCTA images just above the level of the retinal pigment epithelium-Bruch's membrane complex typically showed the presence of a glomerulus-like neovascular network with an adjacent dark area suggestive of a Type 2 choroidal neovascularization (CNV)...
October 1, 2016: Ophthalmic Surgery, Lasers & Imaging Retina
Mahsa Jalali, Ye Yu, Kaichen Xu, Ray J H Ng, Zhaogang Dong, Liancheng Wang, Saman Safari Dinachali, Minghui Hong, Joel K W Yang
Color printing with plasmonic resonators can overcome limitations in pigment-based printing approaches. While layering in pigment-based prints results in familiar color mixing effects, the color effects of stacking plasmonic resonator structures have not been investigated. Here, we demonstrate an experimental strategy to fabricate a 3-tiered complex superlattice of nanostructures with multiple sets of building blocks. Laser interference lithography was used to fabricate the nanostructures and a thin-layer of aluminum was deposited to introduce plasmonic colors...
October 19, 2016: Nanoscale
Rosa Dolz-Marco, David Sarraf, Vincent Giovinazzo, K Bailey Freund
PURPOSE: To describe multimodal imaging findings of an evolving case of acute posterior multifocal placoid pigment epitheliopathy occurring in a young healthy male. METHODS: Case report of a patient with acute posterior multifocal placoid pigment epitheliopathy including comprehensive systemic and ocular examinations. Ultra-widefield autofluorescence, fluorescein angiography, indocyanine green angiography, and serial optical coherence tomography angiography were performed...
October 18, 2016: Retinal Cases & Brief Reports
Elif B Turkoglu, Sara E Lally, Carol L Shields
PURPOSE: To report a case of choroidal sarcoid granuloma simulating choroidal metastasis in a patient with prostate carcinoma. METHOD: Case report. RESULTS: A 66-year-old man was found to have an asymptomatic choroidal mass in his left eye. He had known history of pulmonary sarcoidosis without systemic involvement and prostate carcinoma without metastasis. On examination, visual acuity was 20/20 in each eye. Anterior segment was normal, without inflammatory sign in either eye...
October 18, 2016: Retinal Cases & Brief Reports
Chao Ji, Yue Zhang, Patricia Heller, Ying Guo
Melanocytic matrical carcinoma is a very uncommon malignant neoplasm with follicular differentiation. The lesion often presents as a solitary nodule on sun-exposed skin of elderly patients. Histopathologically, it is characterized by proliferation of atypical matrical cells admixed with an increased number of melanocytes, and some atypical matrical cells may have cytoplasmic pigment. When melanocytic proliferation or melanin pigment is prominent, melanocytic metrical carcinoma can mimic melanoma. Here, we present a novel case of melanocytic matrical carcinoma mimicking melanoma in an 80-year-old man with our findings in histopathologic and immunohistochemical study...
October 18, 2016: American Journal of Dermatopathology
Jianmin Cao, Na Sun, Weisong Yu, Xueli Pang, Yingnan Lin, Fanyu Kong, Jun Qiu
A sensitive and robust multiresidue method for the simultaneous analysis of 114 pesticides in tobacco was developed based on solid-phase extraction coupled with gas chromatography and tandem mass spectrometry. In this strategy, tobacco samples were extracted with acetonitrile and cleaned up with a multilayer solid-phase extraction cartridge Cleanert TPT using acetonitrile/toluene (3:1) as the elution solvent. Two internal standards of different polarity were used to meet simultaneous pesticides quantification demands in the tobacco matrix...
October 18, 2016: Journal of Separation Science
W Pérez, N Vazquez, R Ungerfeld
The aims of this study were to describe the anatomy of the mouth and pharynx of the pampas deer, and to consider its evolutionary feeding niche according to those characteristics. Gross dissections of the mouth and pharynx were performed in 15 animals, 10 adult females and five young animals under 1 year (three males and two females), all dead by causes unrelated to this anatomical region. The upper lip entered in the constitution of a pigmented nasolabial plane. The masseter muscles weighed 43.8 ± 3.5 g and represented 0...
October 17, 2016: Anatomia, Histologia, Embryologia
Tetsuro Kobayashi, Kayoko Hayakawa
No abstract text is available yet for this article.
October 17, 2016: Infection
Md Mostafizur Rahman, Sanaz Khosravi, Kyung Hoon Chang, Sang-Min Lee
This study was designed to investigate the effects of dietary astaxanthin levels on growth performance, feed utilization, muscle pigmentation, and antioxidant capacity in juvenile rainbow trout. Four experimental diets were formulated to contain 0, 50, 75, and 100 mg/kg astaxanthin (designed as AX0, AX50, AX75, and AX100). Each diet was fed to triplicate groups of fish (18.5 g/fish) for 10 weeks. Growth performance and muscle composition of fish were not affected by dietary astaxanthin levels. Total carotenoid concentration in the muscle of fish fed the AX50 diet was higher than that of fish fed the AX0 diet, but no significant differences were observed between these fish and those fed the AX75 and AX100 diets...
September 2016: Preventive Nutrition and Food Science
Jun Hyuk Son, Joon Hyuk Choi, Su-Ho Lim
PURPOSE: To present a rare case of a conjunctival hypertrophic scar presenting as eyelid mass after surgical treatment of a chalazion. CASE PRESENTATION: A 74-year-old man visited our clinic with severe ocular discomfort and excessive lacrimation since several months in his left eye accompanied by itching of the upper eyelid. Examination of the anterior segment revealed a 6 mm (horizontal) × 8 mm (vertical) round, immobile, hard, mushroom-shaped protruding mass on the tarsal conjunctiva of his left eye...
2016: SpringerPlus
Nicole Bandow, Franz-Georg Simon
BACKGROUND: An Annex XV restriction dossier for cadmium in artists' paints was submitted by an EU member state to the European Chemicals Agency ECHA. By cleaning, used brushes under the tap cadmium can enter the food chain via waste water treatment and subsequent agricultural application of the sewage sludge. It was estimated that 110 kg Cd per year is spread on agricultural land via this exposure route. Other sources of Cd amount to almost 120 tons per year. RESULTS: The mobility of Cd from pigments was studied in a field-like scenario by leaching experiments using soil samples amended with sewage sludge and spiked with Cd pigments in percolation columns...
2016: Environmental Sciences Europe
A Krigel, M Berdugo, E Picard, R Levy-Boukris, I Jaadane, L Jonet, M Dernigoghossian, C Andrieu-Soler, A Torriglia, F Behar-Cohen
To save energy, the European directives from the Eco-design of Energy Using Products (2005/32/CE) has recommended the replacement of incandescent lamps by more economic devices such as Light Emitting Diodes (LEDs). However, the emission spectrum of these devices is enriched in blue radiations, known to be potentially dangerous to the retina. Recent studies showed that light exposure contribute to the onset of early stages of Age related macular degeneration (AMD). Here, we investigate, in albinos and pigmented rats, the effects of different exposure protocols...
October 14, 2016: Neuroscience
Melinda Y Chang, Andrew Shin, Joseph Park, Aaron Nagiel, Robert A Lalane, Steven D Schwartz, Joseph L Demer
PURPOSE: To ascertain deformation of the optic nerve head (ONH) and peripapillary tissues caused by horizontal duction. DESIGN: Prospective, experimental study. METHODS: Optical coherence tomography of the ONH region was performed in 23 eyes of twelve normal volunteers in central gaze and increasing (10, 20, and 30°) adduction and abduction. Main outcome measures were changes from central gaze in the configuration of the ONH and peripapillary tissues in eccentric gazes...
October 14, 2016: American Journal of Ophthalmology
Jie Li, Yanli Zhang, Xianhui Cai, Qingqing Xia, Jingmeng Chen, Yi Liao, Zuguo Liu, Yalin Wu
Effective clearance of all-trans-retinal (atRAL) from retinal pigment epithelial (RPE) cells is important for avoiding its cytotoxicity. However, the metabolism of atRAL in RPE cells is poorly clarified. The present study was designed to analyze metabolic products of atRAL and to compare the cytotoxicity of atRAL versus its derivative all-trans-retinal dimer (atRAL-dimer) in human RPE cells. We found that all-trans-retinol (atROL) and a mixture of atRAL condensation metabolites including atRAL-dimer and A2E were generated after incubating RPE cells with atRAL for 6h, and the amount of atRAL-dimer was significantly higher than that of A2E...
October 14, 2016: Toxicology
George Taylor-Walker, Savannah A Lynn, Eloise Keeling, Rosie Munday, David A Johnston, Anton Page, Jennifer A Scott, Srini Goverdhan, Andrew J Lotery, J Arjuna Ratnayaka
Age-related Macular Degeneration (AMD) is a common, irreversible blinding condition that leads to the loss of central vision. AMD has a complex aetiology with both genetic as well as environmental risks factors, and share many similarities with Alzheimer's disease. Recent findings have contributed significantly to unravelling its genetic architecture that is yet to be matched by molecular insights. Studies are made more challenging by observations that aged and AMD retinas accumulate the highly pathogenic Alzheimer's-related Amyloid beta (Aβ) group of peptides, for which there appears to be no clear genetic basis...
October 14, 2016: Experimental Eye Research
Debora L Oliveira, Fernanda L Fonseca, Daniel Zamith-Miranda, Leonardo Nimrichter, Jéssica Rodrigues, Marcos D Pereira, Julia Cv Reuwsaat, Augusto Schrank, Charley Staats, Livia Kmetzsch, Marilene H Vainstein, Marcio L Rodrigues
AIM: We investigated the involvement of the autophagy protein 7 (Atg7) in physiology and pathogenic potential of Cryptococcus neoformans. MATERIALS & METHODS: The C. neoformans gene encoding Atg7 was deleted by biolistic transformation for characterization of autophagy mechanisms, pigment formation, cell dimensions, interaction with phagocytes and pathogenic potential in vivo. RESULTS & CONCLUSION: ATG7 deletion resulted in defective autophagy mechanisms, enhanced pigmentation and increased cellular size both in vitro and in vivo...
October 18, 2016: Future Microbiology
Yue Cai, Zhengyu Huang, Michelle Hoi Ching Cheung, Vincent Motto-Ros, Po-Chun Chu, Yuanwei Wang, Haoyi Zhong, Ronald Yuen, Kelvin Sze-Yin Leung, Judy T S Lum, Sut Kam Phoebe Ho, Nai Ho H Cheung
Chemical analysis of Chinese black ink on xuan paper is useful for the authentication of Asian artwork. The analysis has to be non-destructive and has to accommodate artworks of all sizes. We apply three analytical techniques, ArF laser-induced plume fluorescence, Fourier transform infra-red (FTIR) spectroscopy and portable X-ray fluorescence (pXRF) to analyze five commercial Chinese black inks on two kinds of xuan paper. The FTIR signal is found to be interfered by the substrate which is inevitable because the pigments diffuse extensively into the xuan fiber network...
October 18, 2016: Analytical Chemistry
Seydou Alassane, Christine Binquet, Louis Arnould, Olivier Fleck, Niyazi Acar, Cécile Delcourt, Lionel Bretillon, Alain M Bron, Catherine Creuzot-Garcher
Purpose: We describe the spatial distribution and cross-sectional associations with physical and lifestyle attributes. Methods: The participants of the Montrachet (Maculopathy Optic Nerve, nuTRition neurovAsCular and HEarT) study underwent an exhaustive ophthalmologic examination, including optical coherence tomography, to measure retinal thickness. The spatial distribution of macular pigment optical density (MPOD) defined as a ring-like, intermediate or no-ring pattern, was assessed by means of the two-wavelength autofluorescence technique...
August 1, 2016: Investigative Ophthalmology & Visual Science
Whitney A Greene, Teresa A Burke, Elaine D Por, Ramesh R Kaini, Heuy-Ching Wang
Purpose: The purpose of this study was to characterize the secretion profile of induced pluripotent stem cell-derived retinal pigment epithelium (iPS-RPE) during wound healing. iPS-RPE was used to develop an in vitro wound healing model. We hypothesized that iPS-RPE secretes cytokines and growth factors which act in an autocrine manner to promote migration and proliferation of cells during wound healing. Methods: iPS-RPE was grown in transwells until fully confluent and pigmented...
August 1, 2016: Investigative Ophthalmology & Visual Science
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