• Korean Journal of Veterinary Research
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• v.28 no.1
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• pp.37-47
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• 1988

Xylazine hydrochloride is a widely used analgesic, sedative and muscle relaxant agent in veterinary clinic. Yohimbine hydrochloride and 4-aminopyridine are known as antagonists of xylazine hydrochloride. This paper was investigated to know that the effect of xylazine hydrochloride, yohimbine hydrochloride and 4-aminopyridine, and that whether or not antagonism of yohimbine hydrochloride and 4-aminopyridine to xylazine hydrochloride-induced effect on gizzard motility in chicken. The results were as follows. 1. After xylazine hydrochloride administration, the gizzard motility in chicken was instantly inhibited in relaxation state, and this state was prolonged in proportion to increase of dose. 2. After yohimbine hydrochloride administration, the gizzard motility in chicken showed increase of contractile frequency. 3. After 4-aminopyridine administration, the gizzard motility in chicken was gradually recovered next to decrease of contractile amplitude and frequency. 4. After the combination of yohimbine hydrochloride and 4-aminopyridine administration, the gizzard motility in chicken showed increase of amplitude and radical increase of frequency. 5. After xylazine hydrochloride administration, the relaxation time was shortened by yohimbine hydrochloride, 4-aminopyridine and the combination of yohimbine hydrochloride and 4-aminopyridine. In conclusion, the gizzard motility in chicken was inhibited by xylazine hydrochloride, and this effect was antagonized by the combination of yohimbine hydrochloride and 4-aminopyridine.

• Korean Journal of Pharmacognosy
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• v.1 no.3
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• pp.93-99
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• 1970

There have been reported by several workers for the isolation and determination of the amine derivatives as Metbylephedrine Hydrochloride and Ephedrine Hydrochloride adopting neutralization method, steam distillation method, non-aqous titration method, ion-exchange resin method, titration method after acetylation, colorimetric method, gravimetric method, iodine titration method and gas chromatography. Those methods mentioned in above, can be practically applied for the sample which is not mixed one mith the other amine compounds. Presently, it has not shown on the isolative determination of the mixed sample of amine derivatives. In this paper, it is discussed on the isolative determination of Methylephedrine Hydrochloride as the tertiary amine compound and Ephedrine Hydrochloride as the secondary amine compound. According to the results of the experiment, it could be summarized as follows: 1. There is no time-variation on the color reaction of Methylephedrine Hydrochloride and Ephedrine Hydrochloride with the color reagent, bromcresolgreen. And Methylephedrine Hydrochloride and Ephedrine Hydrochloride, respectively, can be determined spectrophotometrically by means oft his color reaction. 2. For the isolation of Methylephedrine Hydrochloride and Ephedrine Hydrochloride from the mixed sample, Methylephedrine Hydrochloride can be eluted by chloroform, while Ephedrine Hydrochloride by the mixed solvent of chloroform and ethylalcohol (2:1), from the celite column adsorbed at pH6.4 followed by extraction with ether undersodium hydroxide alkali re action. 3. When the sample is mixed with quinine hydrochloride, dihydrocodeine bitartate, and noscapine, these mixed compounds can be eliminated by means of stram distillation. 4. When the sample is mixed with chlorpheniramine maleate, dextromethorphan hydrobromide and diphenhydramine hydrochloride, the mixed compounds can be eliminated by means of steam distillation and celite adsorption column chromatography, In conclusion, the isolative determination method for Methylephedrine Hydrochloride and Ephedrine Hydrochloride studied in this paper, indicates with the excellent reproducibility and accuracy.

• Journal of the korean veterinary medical association
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• v.19 no.10
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• pp.29-36
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• 1983

The sedative action of xylazine hydrochloride and effects of doxapram hydrochloride on the sedative action of xylazine hydrochloride were investigated in goats with carbon tetrachloride induced liver damage. The results obtained were as follows. 1. Sedati

• Korean Journal of Veterinary Research
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• v.22 no.1
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• pp.85-89
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• 1982

Xylazine and ketamine hydrochloride were given intramusculary to 32 deers (sika deer 7, red deer 11, elk 6, pere david deer 3, and reindeer 5). Ketamine hydrochloride was injected 30 minutes after administration of xylazine. Sedative action of combined anesthesia of xylazine and ketamine hydrochloride was similar to the sedative effects of xylazine alone. The recovery from sedation of combined anesthesia was remarkably fast comparing with xylazine alone.

• Natural Product Sciences
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• v.10 no.3
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• pp.124-128
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• 2004

Previously, $(1R,9S)-{\beta}-Hydrastine$ hydrochloride has been found to lower dopamine content in PC12 cells (Kim et al., 20001). In this study, the effects of $(1R,9S)-{\beta}-Hydrastine$ hydrochloride on L-DOPA-induced cytotoxicity in PC12 cells were investigated. Treatment with $(1R,9S)-{\beta}-Hydrastine$ hydrochloride at concentrations higher than $500\;{\mu}M$ caused cytotoxicity in PC12 cells. In addition, $(1R,9S)-{\beta}-Hydrastine$ hydrochloride at non-cytotoxic or cytotoxic concentrations significantly enhanced L-DOPA-induced cytotoxicity (L-DOPA concentration, $50\;{\mu}M$). Treatment of PC12 cells with $750\;{\mu}M$ $-1R,9S)-{\beta}-Hydrastine$ hydrochloride and $50\;{\mu}M$ L-DOPA, alone or in combination, also induced cell death via a mechanism which exhibited morphological and biochemical characteristics of apoptosis, including chromatin condensation and membrane blebbing. Exposure of PC12 cells to $(1R,9S)-{\beta}-Hydrastine$ hydrochloride, L-DOPA and $(1R,9S)-{\beta}-Hydrastine$ hydrochloride plus L-DOPA for 48 h resulted in a marked increase in the cell loss and percentage of apoptotic cells compared with exposure for 24 h. These data indicate that $(1R,9S)-{\beta}-Hydrastine$hydrochloride at higher concentration ranges aggravates L-DOPA-induced neurotoxicity cytotoxicity in PC12 cells. Therefore, it is proposed that the long-term L-DOPA therapeutic patients with $(1R,9S)-{\beta}-Hydrastine$ hydrochloride could be checked for the adverse symptoms.

• Journal of Pharmaceutical Investigation
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• v.26 no.2
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• pp.83-89
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• 1996

A reverse-phase HPLC method to determine DL-Carnitine Hydrochloride in pharmaceutical preparation is described. UV absorption derivatives of DL-Carnitine Hydrochloride were formed with p-Bromophenacyl Bromide in an essentially quantitative manner using crown ether as catalyst. The DL-Carnitine-bromophenacyl ester absorbed UV radiation strongly at 254nm, allowing the detection of as small a quantity as 12.5ng of DL-Carnitine Hydrochloride. A linear defection range was $5\;{\times}\;10-8 \;{\sim}\;5\;{\times}\;10-7M$ of DL-Carnitine Hydrochloride. And the linear regression at various drug concentration was =0.999 (n=10). The DL-Carnitine Hydrochloride in pharmaceutical preparation was successfully derivatized and separated from other constituents by reverse phase HPLC with detection at 254 nm.

• Journal of Pharmaceutical Investigation
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• v.3 no.1_2
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• pp.5-15
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• 1973

Fluorometric determination of dl-Methylephedrine hydrochloride from complex preparation were studied. According to the experimental results and considerations obtained the results for the following. (1) dl-Methylephedrine hydrochloride in Hydrochloric acid media occurs the fluorescens by Picrolonic acid and Cuppric acetate. (2) The maximum absorption fluorescence wave length of dl-Methylephedrine hydrochloride standard solution is $365m{\mu}$. (3) The relationship between the fluorescence proportions to concentration of standard solution at range of $4.2{\times}10^{-4}\;M$. $6{\times}10^{-4}M$. (4) dl-Methylephedrine hydrochloride was precisely determined even in the presence of various components, especially Chloropheniramine maleate, Dextromethorphan hydrobromide and Diphenylhydramine hydrochloride. (5) This method has high sensitivity and is simple in precedure. (6) This method be applicable with 99.79% accuracy and was 99.5% in complex preparation.

• Journal of the korean academy of Pediatric Dentistry
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• v.3 no.1
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• pp.41-47
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• 1976

The clinical effect of pre-operative medication with hydroxyzine hydrochloride in allaying fear and apprehension without psychic trauma, controlling the behavior of 62 pedodontic patients aged $2\frac{1}{2}$ to 12 has been studied. The following results were obtained upon this study. 1. Hydroxyzine hydrochloride group gave statistically high significant results at 0.005 level when compared to placebo and control group. 2. Placebo was superior to control group for control of cooperation, crying and apprehension: the difference, however, was not significant statistically. 3. As the number of appointments in hydroxyzine hydrochloride group increased behavior control of patients were easier. 4. The amount of 30mg hydroxyzine hydrochloride was appeared to be not effective for very young problem child. ($2\frac{1}{2}$Yrs) 5. Hydroxyzine hydrochloride was a safe drug with no apparent side effect drowsiness.

• Journal of Pharmaceutical Investigation
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• v.3 no.3
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• pp.5-15
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• 1973

The stabilizing effect of promazine hydrochloride injectin was tested by irradiation of sun lamp(5,000 Lux) on their acid solution sealed in ampules under various stabilizers. The result of experimentation on the color change, the remaining proportion and the half life of promazine hydrochloride solution is as follows. 1. Instability of promazine hydrochloride solution is mainly caused by the sunlight and oxygen. 2. The pH range of promazine hydrochloride injection is recommended to $pH\;4.4{\sim}5.2$ 3. The decomposition of promazine hydrochloride by the sunlight is composed of pseudo zero order reaction when It maintains colorless solution. 4. The half life of 0.5% promazine hydrochloride injection was 30 hrs. under sun lamp irradiation, but it was delayed to 84 hrs. by the simple stabilizer and to 175 hrs. by compound stabilizer. 5. The stabilizing effect of promazine .hydrochloride injection adding sod. metabisulfite$(Na_2S_2O_5)$ was most excellent in various simple stabilizers and adding $Na_2S_2O_5$ to nicotinic acid, $Na_2S_2O_5$ to nicotinamide were more excellent than other compound stabilizers.

• YAKHAK HOEJI
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• v.58 no.3
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• pp.190-199
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• 2014

The Korean Pharmaceutical Codex (KPC) analytical method of ambroxol hydrochloride and clenbuterol hydrochloride formulation is complicated and needed to carry out multiple processes during the test. To improve the low efficiency of analytical procedure that makes pharmaceutical laboratory consume much time and high cost to conduct the test of this formulation, this study was performed for simplifying the pretreatment process and optimizing conditions of the HPLC assay. The analytical procedure using HPLC was developed to establish analytical specification for ambroxol hydrochloride and clenbuterol hydrochloride formulations. The newly developed analytical method has good linearity ($R^2$ >0.999), specificity, precision (RSD<1.0%) and the recovery ranges of 98.50~101.84% for ambroxol, 98.29~101.35% for clenbuterol syrup and 98.66~101.71% for clenbuterol tablets. The LOQs were 0.204 ${\mu}g/ml$ for ambroxol, 0.021 ${\mu}g/ml$ for clenbuterol syrup and 0.073 ${\mu}g/ml$ for clenbuterol tablets. The new method was performed with commercially available samples to confirm analytical conditions and validated to be suitable for saving time and cost to control the quality of routine manufactured products. This analytical method will be used for revising the monograph of ambroxol hydrochloride and clenbuterol hydrochloride formulation in next supplement of KPC.