نتایج جستجو برای: antimony trisulfide colloid

تعداد نتایج: 11715  

2017
Débora Cristina de Oliveira Nunes Luiz Borges Bispo-da-Silva Danielle Reis Napolitano Mônica Soares Costa Márcia Moura Nunes Rocha Figueira Renata Santos Rodrigues Veridiana de Melo Rodrigues Kelly Aparecida Geraldo Yoneyama

Leishmaniasis is a group of diseases caused by protozoa of Leishmania genus. The currently available treatments for this disease are expensive, present high toxicity and are associated to difficulties of healing and parasite resistance. Therefore, the development of strategies for leishmaniasis treatment is indispensable and includes reposition of existing drugs, as well as drug combination the...

2009
Cesar Miranda-Verastegui GianFranco Tulliano Theresa W. Gyorkos Wessmark Calderon Elham Rahme Brian Ward Maria Cruz Alejandro Llanos-Cuentas Greg Matlashewski

BACKGROUND Current therapies for cutaneous leishmaniasis are limited by poor efficacy, long-term course of treatment, and the development of resistance. We evaluated if pentavalent antimony (an anti-parasitic drug) combined with imiquimod (an immunomodulator) was more effective than pentavalent antimony alone in patients who had not previously been treated. METHODS A randomized double-blind c...

Journal: :Nanotechnology 2011
Fei Wang Jung-Hun Seo Dylan Bayerl Jian Shi Hongyi Mi Zhenqiang Ma Deyin Zhao Yichen Shuai Weidong Zhou Xudong Wang

An aqueous solution-based doping strategy was developed for controlled doping impurity atoms into a ZnO nanowire (NW) lattice. Through this approach, antimony-doped ZnO NWs were successfully synthesized in an aqueous solution containing zinc nitrate and hexamethylenetetramine with antimony acetate as the dopant source. By introducing glycolate ions into the solution, a soluble antimony precurso...

Journal: :Mutagenesis 1998
N Schaumlöffel T Gebel

Data on the mechanism of antimony genotoxicity is scarce. Arsenic and antimony are proposed to share some toxicological features. Thus comparative and combined experiments with As(III) and Sb(III) were performed to gain a deeper knowledge of the mechanism of antimony genotoxicity. Trivalent arsenic proved to be five times more cytotoxic and one order of magnitude more potent in induction of mic...

2015
Manuel F. Rosario-Alomar Tatiana Quiñones-Ruiz Dmitry Kurouski Valentin Sereda Eduardo B. Ferreira Lorraine De Jesús-Kim Samuel Hernández-Rivera Dmitri V. Zagorevski Juan López-Garriga Igor K. Lednev

Amyloid fibrils are large aggregates of misfolded proteins, which are often associated with various neurodegenerative diseases such as Alzheimer's, Parkinson's, Huntington's, and vascular dementia. The amount of hydrogen sulfide (H2S) is known to be significantly reduced in the brain tissue of people diagnosed with Alzheimer's disease relative to that of healthy individuals. These findings prom...

Journal: :Environmental Health Perspectives 2004
Kathleen M McCarty David B Senn Molly L Kile Quazi Quamruzzaman Mahmuder Rahman Golam Mahiuddin David C Christiani

Recent in vitro studies have suggested a potential role for antimony as a confounder in human health studies related to arsenic in drinking water. We measured tube-well water concentrations of antimony and arsenic in the Pabna region of Bangladesh, where arsenic concentrations are known to be elevated and the concentrations of antimony have not yet been thoroughly documented. Two hundred forty-...

2012
Cristian Valencia Jorge Arévalo Jean Claude Dujardin Alejandro Llanos-Cuentas François Chappuis Mirko Zimic

BACKGROUND Increased rates for failure in leishmaniasis antimony treatment have been recently recognized worldwide. Although several risk factors have been identified there is no clinical score to predict antimony therapy failure of cutaneous leishmaniasis. METHODS A case control study was conducted in Peru from 2001 to 2004. 171 patients were treated with pentavalent antimony and followed up...

2012
Rupak Chakraborty Sang Bok Kim Steven M. Heald Tonio Buonassisi Roy G. Gordon Prasert Sinsermsuksakul

Thin-film solar cells made from earth-abundant, inexpensive, and non-toxic materials are needed to replace the current technologies whose widespread use is limited by their use of scarce, costly, and toxic elements. Tin monosulfide (SnS) is a promising candidate for making absorber layers in scalable, inexpensive, and non-toxic solar cells. SnS has always been observed to be a p-type semiconduc...

2008
A. Chroneos H. Bracht

Early experiments have determined that the gallium and antimony diffusivities in gallium antimonide are similar, whereas recent more precise studies demonstrate that gallium diffuses up to three orders of magnitude faster than antimony. In the present study using electronic structure calculations we predict the concentrations and migration enthalpy barriers of important defects in gallium antim...

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