Background: Botulinum toxin injections are effective in the treatment of palmar and plantar hyperhidrosis, but discomfort has limited its use.
Objective: To study the use of ethyl chloride medium-stream spray in reducing injection discomfort.
Methods: We used ethyl chloride medium-stream spray, in conjunction with precooling by frozen ice packs, in our No Sweat Clinic for our most recent 51 consecutive cases of botulinum toxin injection.
Results: Ethyl chloride spray greatly facilitated the injection procedure, and all patients completed the injections without hesitation or delay.
Conclusion: Ethyl chloride medium-stream spray, in conjunction with precooling by frozen ice packs, is highly effective in reducing painful injection sensations. Its use is safe, economical, and easy to learn and does not require special equipment.
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http://dx.doi.org/10.2310/7750.2009.08072 | DOI Listing |
Mater Horiz
January 2025
Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China.
In such an era of information explosion, improving the level of information security is still a challenging task. Self-erasing luminescent hydrogels are becoming ideal candidates for improving the level of information security with simple encryption and decryption methods. Herein, a lanthanide-polyoxometalate-based self-erasing luminescent hydrogel with time-dependent and resilient properties was constructed through a covalent crosslinked network constructed with polyacrylamide and a non-covalent crosslinked network constructed with [2-(methacryloyloxy)ethyl]trimethyl ammonium chloride/NaDyWO, along with doping urease.
View Article and Find Full Text PDFResults Chem
December 2024
Department of Chemistry and Biochemistry, Old Dominion University 4501 Elkhorn Avenue, Norfolk, VA 23529, USA.
In this study, the copper(II) complex [Cu(chromoneTSC)Cl]•0.5HO•0.0625CHOH (where chromoneTSC = -Ethyl-2-((4-oxo-4H-chromen-3-yl)methylene)-hydrazinecarbothioamide) was synthesized and characterized; then used to carry out studies in combination with berberine chloride (BBC).
View Article and Find Full Text PDFJ Chem Phys
January 2025
Key Laboratory of Chemistry and Chemical Engineering on Heavy-Carbon Resources, School of Chemistry and Chemical Engineering, Yili Normal University, Yining 835000, People's Republic of China.
E2 elimination and SN2 substitution reactions are of central importance in preparative organic synthesis due to their stereospecificity. Herein, atomistic dynamics of a prototype reaction of ethyl chloride with hydroxide ion are uncovered that show strikingly distinct features from the case with fluoride anion. Chemical dynamics simulations reproduce the experimental reaction rate and reveal that the E2 proceeding through a direct elimination mechanism dominates over SN2 for the hydroxide ion reaction.
View Article and Find Full Text PDFMolecules
December 2024
Laboratory of Chemistry and Environmental Chemistry (LCCE), Department of Chemistry, Faculty of Matter Sciences, University of Batna 1, Batna 05000, Algeria.
Twelve compounds (-), kaempferol (), luteolin (), luteolin 4'--xyloside (), luteolin 4'--β-glucoside (), quercetin 4'--β-xyloside (), kaempferol-3--[6″--(E)-p-coumaroyl]-β-D-glucoside (-tiliroside) (), protocatechuic acid (), gallic acid (), methyl gallate (), ethyl gallate (), shikimic acid-3--gallate (), and 3,3',4'-tri--methyl-ellagic acid 4-sulfate (), were isolated and identified from the aerial parts of (Cav.) Pers (synonym: C. Presl.
View Article and Find Full Text PDFMacromol Biosci
January 2025
Universidade Estadual de Campinas (UNICAMP), School of Chemical Engineering (FEQ), Albert Einstein Avenue, 500, Campinas, São Paulo, 13083-852, Brazil.
Annually, thousands of individuals suffer from skin injuries resulting from trauma, surgeries, or diabetes. Inadequate wound treatment can delay healing and increase the risk of severe infections. In this context, a promising synthetic polymer with potent antimicrobial properties, Poly{2-[(methacryloyloxy)ethyl]trimethylammonium chloride} (PMETAC), is synthesized and crosslinked with N,N'-Methylenebis(acrylamide) (BIS) in the presence of Chitosan (CH), a natural, biocompatible polysaccharide that promotes cell regeneration and provides additional beneficial properties.
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