Background: Historically, methylene blue (MB) has been used for multiple purposes, including as an antidote for toxin-induced and hereditary methemoglobinemia, ifosfamide-induced encephalopathy, and ackee fruit and cyanide poisoning; as an aniline dye derivative, antimalarial agent, and antidepressant.
Discussion: Most recently, the use of MB has been advocated as a potential adjunct in the treatment of shock states. Our article reviews the role of MB in septic shock, anaphylactic shock, and toxin-induced shock. MB is proposed to increase blood pressure in these shock states by interfering with guanylate cyclase activity, and preventing cyclic guanosine monophosphate production and vasodilatation.
Summary: MB may be an adjunct in the treatment of septic shock, anaphylactic shock, and toxin-induced shock.
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http://dx.doi.org/10.1016/j.jemermed.2013.08.102 | DOI Listing |
Anal Chim Acta
May 2025
Department of Nephrology, The First Affiliated Hospital of Ningbo University, Ningbo, 315010, Zhejiang, PR China. Electronic address:
The sensitive, efficient, and simultaneous assay of creatinine and urea in different body fluid is crucial for the daily detection and treatment of chronic kidney disease. Here, we exploited a versatile composite surface enhanced Raman scattering (SERS) substrate of polydimethylsiloxane (PDMS)-flower-like ZIF-67@Ag nanoparticles (NPs) based on simple in-situ growth and ion sputtering strategies. The plasmonic Ag NPs assembled on the three-dimensional anisotropic ZIF-67 matrix, facilitating numerous resonant electromagnetic "hotspots".
View Article and Find Full Text PDFChem Pharm Bull (Tokyo)
March 2025
Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.
In the present study, magnetic-calcined bamboo composite adsorbents (MCBC200, MCBC400, MCBC600, MCBC800, and MCBC1000) were prepared, and their physicochemical characteristics (scanning electron microscope images, differential thermogravimetric analysis, Fourier transform-IR, specific surface area, surface functional groups, and point of zero charge [pH]) were evaluated. Furthermore, the adsorption capacity of methylene blue (MB, cationic dye) using the prepared adsorbents was assessed. The value of pH and the specific surface area of MCBC400 were 7.
View Article and Find Full Text PDFInt J Biol Macromol
March 2025
Division of Forest and Biomaterials Science, Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan. Electronic address:
Hemin was immobilized on chitosan flakes using the conventional ethyl-3-(3-dimethylaminopropyl) carbodiimide/N-hydroxysuccinimide system to produce hemin-bound chitosan (HC) flakes. The HC flakes demonstrated oxidation ability in the presence of HO, similar to hemin, but with improved photostability and reusability caused by immobilization on chitosan flakes. While the HC flakes did not adsorb cationic dyes such as Methylene blue and Rhodamine B, they effectively adsorbed anionic dyes such as eosin Y and Congo red, while hemin did not adsorb either of these two dyes.
View Article and Find Full Text PDFChemosphere
March 2025
School of Materials Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China. Electronic address:
A novel adsorbent is prepared from waste cotton fiber by a simple pyrolysis-activation process, and it can efficiently adsorb many kinds of organic pollutants (cationic/anionic dyes and antibiotics etc.). The obtained cotton-based activated carbon (CAC) with large specific surface area (3709 m g) and suitable pore structure provide abundant active sites and fast channels for the adsorption of pollutant molecules.
View Article and Find Full Text PDFNanomaterials (Basel)
February 2025
College of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an 710054, China.
The accumulation of organic pollutants and solid waste is one of the major environmental challenges faced globally. Establishing an efficient recycling system for solid waste and designing cost-effective, high-performance photocatalysts are urgent tasks for the removal of organic pollutants from water. This study utilizes coal gangue as the precursor to synthesize a coal gangue-based phosphorus-silicon-aluminum molecular sieve (SAPO-5) via hydrothermal synthesis.
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