Coloring Agents (Dyes)

11/01/2009 - "The syntheses of novel near-infrared (NIR) dyes with excellent optical properties in biological tissues have driven the continued improvement of fluorescence imaging of deeply seated tumors. "
01/01/2013 - "Such agents need to show improved sensitivity and specificity for tumor imaging in comparison with small-molecule-dyes. "
02/01/2015 - "A previous study defined two organic polymethine cyanine dyes as ideal NIRF probes, IR‑783 and its derivative MHI‑148, which have excellent optical characteristics, superior biocompatibility and cancer targeting abilities. "
05/15/2010 - "In this study, we show the preferential uptake and retention of two hepatamethine cyanine dyes, IR-783 and MHI-148, in tumor cells and tissues. "
06/01/2003 - "We describe here a systematic study of how the molecular structure of closely related cationic triarylmethanes affects the selectivity with which these dyes mediate the photochemical destruction of tumor cells. "

09/01/2011 - "For infection analysis, staining with polychromatic dyes such as Giemsa plus microscopic examination is the gold standard. "
02/01/2012 - "In this study, the earliest stages of RSV infection in normal human bronchial epithelial cells were probed by tracking virions with fluorescent lipophilic dyes in their membranes. "
03/01/2012 - "A number of microscopic techniques and dyes are available to diagnose microsporidian infections in invertebrate and vertebrate hosts. "
02/01/2009 - "By using two different dye transfer methods, with two different tracer dyes, we found chCx50 E48K expressed in chicken lens embryonic fibroblast cells by retroviral infection similarly failed to induce dye coupling, and prevented wild-type chCx50 from forming functional gap junctions. "
09/01/2008 - "Our goals were to identify two dyes that label larval trematodes belonging to the species Maritrema novaezealandensis and Coitocaecum parvum, determine if the dyes influence survival and infectivity of larval trematodes and/or host mortality, and if larval trematodes labeled with alternative dyes could be distinguished post-infection. "

04/01/2015 - "Morton et al. introduced a technique to identify sentinel lymph nodes by local injection of vital dyes and reported its benefit for managing the progress of malignant melanoma. "
04/01/1992 - "A new procedure was developed using vital dyes that permits intraoperative identification of the sentinel lymph node, the lymph node nearest the site of the primary melanoma, on the direct drainage pathway. "
07/01/1998 - "The concept that a primary, or sentinel, lymph node is the first node to receive drainage from a tumor has been established in patients with malignant melanomas using radiolabeled tracers and vital dyes. "
12/01/2010 - "The in vitro PDT efficacy of a novel metallophthalocyanine (MPc) derivative and established 5-ALA photosensitizing dyes against human metastatic melanoma cells."
04/01/2012 - "Applicability of radiocolloids, blue dyes and fluorescent indocyanine green to sentinel node biopsy in melanoma."

07/01/2015 - "However, many will not achieve significant improvement on this therapy alone; some may even develop an allergy to the added dyes and fragrances in these products. "
11/01/1995 - "Effectiveness of disperse dyes mix in detection of contact allergy to textile dyes: an Italian multicentre study."
08/01/1995 - "Prevalence of contact allergy to non-disperse azo dyes for natural fibers: a study in 1814 consecutive patients."
01/01/1978 - "The present study indicates that natural food colours may induce hypersensitivity reactions as frequent as synthetic dyes."
07/01/2015 - "A survey of the reported frequencies of contact allergy to textile dyes and textile dye mixes was performed by searching PubMed (http://www.ncbi.nlm.gov.ludwig.lub.lu.se/pubmed, last accessed 14 December 2014). "

11/07/2002 - "All of the dyes of this study were evaluated for dark and phototoxicity toward Colo-26 cells in vitro. "
06/14/1996 - "Results from this study indicate that the switch from dark cytotoxicity to phototoxicity occurred when dyes, due to a decrease in cationic character with increasing size of alkyl substituents, were no longer able to cross the plasma membrane. "
03/28/2015 - "The hyperpolarizabilities of all dyes were compared using hyper-Rayleigh scattering at 800 nm. Cellular uptake, localization, toxicity and phototoxicity were evaluated using tissue cell cultures (HeLa, SK-OV-3 and MDA-231). "
12/07/2013 - "The disadvantages of commonly used organic dyes include photobleaching, autofluorescence, phototoxicity and scattering when UV (ultraviolet) or visible light is used for excitation. "
03/01/2012 - "Phototoxicity of phenothiazinium dyes against methicillin-resistant Staphylococcus aureus and multi-drug resistant Escherichia coli."