Analysis of the assortment of sedatives registered in the Republic of Uzbekistan showed that sedatives are represented on the pharmaceutical market of the country by such dosage forms as drops, solutions, tinctures, syrups, medicinal herbal raw materials, capsules and tablets. Considering that sedatives registered in the form of a substance, with the exception of the dry extract of Leoglycyrfl produced by “Uzkimyofarm”, there are practically no names of S.K. Islambekov in the Joint Stock Company. In this regard, we consider it expedient to create a new sedative medicinal product of herbal origin in the form of a substance and obtain dosage forms based on it.
Oziq-ovqat sanoati hamda tibbiy amaliyotda kashtan ekstrakti asosidagi olingan qushimchlar suyuq (Eskuzan va boshqalar), ham quruq ekstraktlar (Esflazid, Reparil va boshqalar) keng qo'llaniladi. Kashtan mevasidan olingan turli konsentratsiyali ekstraktlaridan foydalaniladi [1].
The article is about Stylistic device of metaphor and its role in creating imagery, to be specific creating visual imagery in literary texts. The extracts taken from the novel “A Dance with Dragons” by George R. R. Martin are analyzed from stylistic point of view.
Surface-active substances find a wide application in all branches of the national economy [1,2]. Especially, the surfactants produced from environmentally -safe and reproducible initial materials attract the attention of specialists [3-4]. This paper is devoted to the obtainment of new representatives of such reagents and an investigation of their antimicrobial activity.
The article studies a capillary electrophoretic (CE) method for the analysis of urinary extracts of the local anesthetic, bupivacaine, and its three main metabolites, desbutylbupi vacaine, 3’ hydroxybupivacaine, and 4’-hydroxybupivacaine, in rat urine. After collection of blank urine, the rats were given a 20 mg/kg intramuscular injection of bupivacaine, and urine was collected for 12 h after dosing. CE analyses were performed using the CAPEL®-205 capillary electrophoresis systems. The data was collected using the Elforan® specialized software. The use of methanol to reduce peak tailing was investigated at different concentrations, but 20% and 30% v/v were proved to be the most optimal at the preparatory stage of the experiment. The resolution of 3’ hydroxybupivacaine and 4’-hydroxybupivacaine was 1.09, 0.98, 0.89 and 0.89 at 15, 40, 70 and 110 s, respectively. The initial resolution (Rs) of desbutylbupi vacaine was achieved with all studied injection periods as Rs = 1.09, 0.97, 0.96 and 0.96 at 15, 40, 70 and 110 s, respectively. Separation efficiencies for 3’- and 4’ hydroxybupivacaine were312×10 3 , 257×10 3 , 196×10 3 и 169×10 3 μlat injection times of15, 40, 70 and 110 s, respectively. The results showed that the mass of bupivacaine, desbutylbupi vacaine, and 3’- and 4’ hydroxybupivacaine significantly recovered in the rat urine after the dose was administered. The recoveries as a percent of the dose were 0.04, 0.80, 0.15 and 0.05% for desbutylbupi vacaine, bupivacaine, 3’-hydroxybupivacaine, and 4’-hydroxybupivacaine, respectively. Separation of bupivacaine and its metabolites was achieved in 15 min. A particular advantage of this approach over published HPLC methods is that separation of the two hydroxy positional isomers of bupivacaine is possible. A number of unknown peaks were also observed in the electropherograms from the rats dosed with bupivacaine. These did not correspond to any peaks appearing in the blank urine samples. Characterization of these unknown peaks may prove useful for the further understanding of bupivacaine metabolism.