PMID- 34738720 OWN - NLM STAT- MEDLINE DCOM- 20220104 LR - 20220104 IS - 1522-7243 (Electronic) IS - 1522-7235 (Linking) VI - 37 IP - 1 DP - 2022 Jan TI - Sensitivity improvement for spectrofluorimetric determination of commonly used antifungal drug 'nystatin': application for oral suspension. PG - 134-140 LID - 10.1002/bio.4154 [doi] AB - In this paper, two simple, rapid and highly sensitive spectrofluorimetric methods were developed and validated for nystatin determination in its pure form and pharmaceutical dosage form (oral suspension). The first method was based on measuring the nystatin native fluorescence after dilution with isopropyl alcohol at 407 nm (excitation 303 nm). The fluoresence intensity was linearly dependant on the nystatin concentration within the specified range 50-500 ng ml(-1) . The second was based on micellar enhancement of nystatin fluorescence using sodium dodecyl sulphate (SDS). In the presence of 2% w/v SDS, an ~1.9-fold enhancement could be achieved in the relative fluorescence intensity of nystatin. The linear range for the second method was 20-100 ng ml(-1) . The limits of quantification and detection were found to be 43.23 ng ml(-1) and 14.27 ng ml(-1) (Method I), 6.08 ng ml(-1) and 2.0 ng ml(-1) (Method II). According to percentage recoveries and relative standard deviations (RSDs) obtained, the proposed methods were precise (RSDs were less than 2%), reproducible, and accurate and could be successfully applied for quantitative estimation of nystatin in its dosage form. The statistical results of this method were compared with that of the reported method and showed excellent agreement with respect to accuracy and precision. CI - (c) 2021 John Wiley & Sons Ltd. FAU - Attia, Tamer Z AU - Attia TZ AUID- ORCID: 0000-0002-7241-2130 AD - Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt. FAU - Saied, Huda H AU - Saied HH AD - Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt. FAU - Nour El-Deen, Deena A M AU - Nour El-Deen DAM AD - Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt. FAU - Alahmadi, Yaser M AU - Alahmadi YM AD - Department of Clinical and Hospital Pharmacy, College of Pharmacy, Taibah University, Medina, Kingdom of Saudi Arabia. FAU - Omar, Mahmoud A AU - Omar MA AUID- ORCID: 0000-0001-5245-8767 AD - Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt. AD - Department of Pharmacognosy and Pharmaceutical Chemistry, College of Pharmacy, Taibah University, Medinah, Saudi Arabia. LA - eng PT - Journal Article DEP - 20211120 PL - England TA - Luminescence JT - Luminescence : the journal of biological and chemical luminescence JID - 100889025 RN - 0 (Antifungal Agents) RN - 0 (Micelles) RN - 1400-61-9 (Nystatin) RN - 368GB5141J (Sodium Dodecyl Sulfate) SB - IM MH - *Antifungal Agents MH - Micelles MH - *Nystatin MH - Sodium Dodecyl Sulfate MH - Spectrometry, Fluorescence OTO - NOTNLM OT - antifungal OT - micellar enhancement OT - native fluorescence OT - nystatin EDAT- 2021/11/06 06:00 MHDA- 2022/01/05 06:00 CRDT- 2021/11/05 08:48 PHST- 2021/09/16 00:00 [revised] PHST- 2021/07/24 00:00 [received] PHST- 2021/10/27 00:00 [accepted] PHST- 2021/11/06 06:00 [pubmed] PHST- 2022/01/05 06:00 [medline] PHST- 2021/11/05 08:48 [entrez] AID - 10.1002/bio.4154 [doi] PST - ppublish SO - Luminescence. 2022 Jan;37(1):134-140. doi: 10.1002/bio.4154. Epub 2021 Nov 20.