Solutions and aqueous suspensions begin to lose activity soon after preparation. Aqueous suspensions are stable for 10 minutes on heating to 100 °C at pH 7; also stable in moderately alkaline media, but labile at pH 9 and pH 2. Heat, light, and oxygen accelerate decomposition.
旋光度:
Optical rotation at 25 °C/D: -10 deg (glacial acetic acid); +21 deg (pyridine); +12 deg (dimethylformamide); max absorption (ethanol): 290, 307 and 322 nm; optical rotation at 25 °C/D: -7 deg (0.1 N HCl in methanol)
Nystatin therapy has been associated with a low rate of serum enzyme abnormalities, although it has been difficult to attribute these elevations to nystatin. Despite its use for several decades, there have been no convincing cases of acute hepatic injury linked to nystatin therapy. While nystatin is usually is not normally absorbed, low concentrations may enter the circulation in patients with inflammation and damage to the gastrointestinal tract. Nevertheless, nystatin is considered very safe and is unlikely to cause hepatic injury.
参考文献:M Chen, V Vijay, Q Shi, Z Liu, H Fang, W Tong. 美国食品药品监督管理局批准的药物标签用于研究药物诱导的肝损伤,《药物发现今日》,16(15-16):697-703, 2011. PMID:21624500 DOI:10.1016/j.drudis.2011.05.007
M Chen, A Suzuki, S Thakkar, K Yu, C Hu, W Tong. DILIrank:按人类发展药物诱导肝损伤风险排名的最大参考药物清单。《药物发现今日》2016, 21(4): 648-653. PMID:26948801 DOI:10.1016/j.drudis.2016.02.015
References:M Chen, V Vijay, Q Shi, Z Liu, H Fang, W Tong. FDA-Approved Drug Labeling for the Study of Drug-Induced Liver Injury, Drug Discovery Today, 16(15-16):697-703, 2011. PMID:21624500 DOI:10.1016/j.drudis.2011.05.007
M Chen, A Suzuki, S Thakkar, K Yu, C Hu, W Tong. DILIrank: the largest reference drug list ranked by the risk for developing drug-induced liver injury in humans. Drug Discov Today 2016, 21(4): 648-653. PMID:26948801 DOI:10.1016/j.drudis.2016.02.015
Nystatin is poorly absorbed from the GI tract, and detectable blood concentrations are not obtained after usual doses. Following oral administration, nystatin is excreted almost entirely in feces as unchanged drug.
In healthy individuals, mean salivary nystatin concentrations in excess of those required in vitro for growth inhibition of clinically important Candida persist for approximately 2 hours after the beginning of oral dissolution of two nystatin lozenges (400,000 units) administered simultaneously.
来源:Hazardous Substances Data Bank (HSDB)
吸收、分配和排泄
未通过完整皮肤或粘膜的局部应用被吸收。
Not absorbed following topical application to intact skin or mucous membranes.
The antitumor activity of antibacterial and antifungal compounds has been of interest in the past. In several investigations
glycopeptide antibiotics like bleomycin and antifungal agents like itraconazole have shown direct positive results
whereas antifungal polyenes such as amphotericin B have been shown to potentiate the effects of antitumor agents.
After having investigated the fluorescence-marked antibacterial glycopeptides vancomycin and ramoplanin on various
malignant and healthy human cells in previous studies, the present work is focused on the antifungal polyene nystatin.
We coupled nystatin to the fluorescent dye fluorescein isothiocyanate (FITC). After confirming the correct mass by mass
spectrometry the effect of the conjugate on nine different human cell lines (two benign and seven tumor cell lines) was
examined. The character of the uptake was determined by confocal laser scanning microscopy (CLSM) and the uptake
was quantified by fluorescence activated cell sorting (FACS). The addition of propidium iodide (PI) allowed for detection
and quantification of cell membrane disruption caused by the fluorescein-nystatin conjugate.
Uptake of the conjugate was found to vary among the nine cell lines investigated. Conjugate uptake was strongest after 6
hours in most cell lines. Only the two prostate carcinoma cell lines PC3 and LNCaP showed further increase in uptake after
long-time (24h) incubation. PI staining in general correlated well with the conjugate FITC staining values. The
Colo205 colon carcinoma cell line and the U373 and LN18 glioblastoma cell lines exhibited very low conjugate uptake
and PI staining.
The results indicate that this conjugate shows potential for future imaging studies on certain human cancer cells.
Chemical modification of tetraene macrolide antibiotic nystatin A1 with organophosphorus alcohols
作者:V. V. Belakhov、Yu. D. Shenin、A. V. Dogadina、D. V. Aleshunina、B. I. Ionin
DOI:10.1134/s1070363214020248
日期:2014.2
Esterification of tetraene macrolide antibiotic nystatin A(1) with organophosphorus alcohols has been studied; formation of the corresponding organophosphorus esters of the antibiotic has been confirmed. Physicochemical, spectral, and biological properties of the prepared esters have been studied. The esterification products have revealed high antifungal activity towards the Candida yeast fungi.
METHODS OF QUALITATIVELY AND/OR QUANTITATIVELY ANALYZING PROPERTIES OF ACTIVATABLE ANTIBODIES AND USES THEREOF