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[Consideration on the problem of "ascension of the case poisoned by Chinese Traditional Medicines"].

OBJECTIVE: Desserting toxicity and reasonable usage of Chinese traditional medicines. METHODS: Analysing the understanding of toxicity of Chinese traditional medicines in Chinese medicine and pharmacology and the reason for ascension of the case poisoned by Chinese traditional medicines. RESULTS AND CONCLUSION: All medicines are poisonous. The venomous drug can cure disease when it is reasonably applied. On the contrary, the good medicine will be harmful to one's health if it is unreasonably used. In order to use Chinese traditional medicines securely and effectively, it is necessary to learn seriously theories of traditional Chinese medicine and pharmacology and experiences of using drugs and to strengthen the study on evaluation of security of Chinese traditional medicines.

Animals↗

Differential scanning calorimetry to investigate the compatibility of ciprofloxacin hydrochloride with excipients.

The compatibility between ciprofloxacin hydrochloride (CFX) and some excipients was evaluated using differential scanning calorimetry (DSC). Physical mixture, coground mixture, compressed mixture and kneaded mixture were prepared to study the effect of sample manipulation. In addition, the samples of physical mixture were also accelerated at 55 degrees C for three weeks to obtain more reliable conclusions. Different types of excipients currently used in tablet or capsule formulations namely, calcium phosphate dibasic dihydrate (Emcompress), magnesium stearate lactose, sorbitol, mannitol, croscarmellose sodium (Ac-Di-Sol), sodium carboxymethyl starch (Primojel), microcrystalline cellulose (Avicel PH 101, Emcocil) were examined. The DSC scan of CFX displayed two endothermic peaks probably as a result of a fusion process followed by a decomposition process. CFX appeared to interact with sorbitol, mannitol, Ac-Di-Sol, Primojel, Avicel PH 101 and Emcocil.

Anti-Infective Agents↗

Intropin (dopamine hydrochloride) intravenous admixture compatibility. Part 2: stability with some commonly used antibiotics in 5% dextrose injection.

The stability of dopamine hydrochloride (Intropin) and several commonly used antibiotics was studied as admixtures in 5% Dextrose Injection USP. The antibiotic-dopamine-dextrose 5% admixtures were assayed for dopamine by colorimetric and chromatographic procedures. The antibiotics were assayed by standard microbiological methods. Kanamycin sulfate, tetracycline hydrochloride, carbenicillin disodium and chloramphenicol sodium succinate were stable in the Intropin-5% dextrose admixture for a period of 24 hours at room temperature in fluorescent and natural (western exposure) light. Gentamicin sulfate, penicillin G potassium and cephalothin sodium were stable in Intropin-5% dextrose admixture for six hours. Ampicillin sodium was stable in the Intropin admixture for only one hour. Amphotericin B was physically unstable in the Intropin-dextrose 5% solution upon admixture. The potency of dopamine hydrochloride remained substantially unchanged in the presence of the above antibiotics. It is recommended that dopamine not be added to amphotericin B or ampicillin sodium admixtures. Further, in order to avoid a fixed combination of potent drugs, it is recommended that a "piggyback" administration set or administration into a second injection site be employed when another drug is to be administered with dopamine hydrochloride.

Anti-Bacterial Agents↗

[Mutual influence of aminophyllin and cefotaxime in the treatment of pulmonary heart disease].

The serum Aminophyllin (TP) and Cefotaxime (CTX) concentration of the patients of pulmonary heart disease during alute attack were measured by HLPC at 2 h and 6 h after infusion. (1) TP and CTX alone were used (2) TP and CTX were used simultaneously. The result showed that the concentrations of TP were much higher, but CTX were much lower when use CTX and TP simultaneously, at 2 h and 6 h (P < 0.01, P < 0.05). The concentration of TP of pulmonary heart disease with heart failure was higher than without heart failure at 6 h when alone were used or simultaneous were used (P < 0.01), CTX wasn't correlated with heart failure. The concentrations of TP and CTX did not correlate with PaO2 and PaCO2. It showed that TP and CTX would not be used simultaneously.

Aminophylline↗

Stability of an ofloxacin injection in various infusion fluids.

The stability of ofloxacin was evaluated in 10 different infusion fluids under various storage conditions. Solutions of ofloxacin (0.4 mg/mL and 4.0 mg/mL) were prepared in (1) 0.9% sodium chloride injection; (2) 5% dextrose injection; (3) 5% dextrose and 0.9% sodium chloride injection; (4) 5% dextrose and lactated Ringer's injection; (5) 5% sodium bicarbonate injection; (6) Plasma-Lyte 56 and 5% dextrose injection; (7) 5% dextrose, 0.45% sodium chloride, and 0.15% potassium chloride injection; (8) 1/6 M sodium lactate injection; (9) water for injection; and (10) 20% mannitol injection. Each solution was injected into polyvinyl chloride bags and stored at (1) 24 degrees C for 3 days, (2) 5 degrees C for 7 days, (3) 5 degrees C for 14 days, (4) -20 degrees C for 13 weeks and then 5 degrees C for 14 days, or (5) -20 degrees C for 26 weeks and then 5 degrees C, for 14 days. Samples were assayed initially and after storage by high-performance liquid chromatography and examined for visual clarity, pH, turbidity, and particulates. Ofloxacin was stable in all solutions and under all storage conditions. All of the solutions were clear, pH was stable, and particulate-matter counts were acceptable under all storage conditions (except for the 20% mannitol solution, which formed crystals at 5 degrees C and -20 degrees C). An injectable formulation of ofloxacin was stable for at least 3 days at 24 degrees C, 14 days at 5 degrees C, and 26 weeks at -20 degrees C in all tested infusion fluids. Crystals formed in refrigerated or frozen solutions prepared with 20% mannitol injection.

Bicarbonates↗

[Compatibility of Chinese drugs radix Aconiti carmichaeli with rhizoma Pinelliae].

To find out whether the Chinese drug Radix Aconiti Carmichaeli is compatible with another Chinese drug Rhizoma Pinelliae in preparation, the two medicinal herbs were made into different forms of decoctions. Experiments with these decoctions were carried out to observe the action on isolated hearts of toads and the ECG and acute toxicity on mice. The results showed that in terms of toxicity there was no marked increase in the mixed decoction as compared with the other two decoctions prepared from Radix Aconiti Carmichaeli and Rhizoma Pinelliae separately.

Animals↗

Fat emulsion particle-size distribution in total nutrient admixtures.

The fat particle-size distribution in and physical stability of two commercially available lipid emulsions before and after their use in total nutrient admixtures (TNAs) are reported. Four TNAs without electrolytes and four TNAs with electrolytes were prepared; each type of TNA was prepared with Liposyn II and with Intralipid. Particle size was measured in the < 1-micron range by using photon correlation spectroscopy and in the 2-60-microns range by using light blockage. Admixtures with or without electrolytes were stored for two or nine days at 4 degrees C followed by one day at 25 degrees C. For the fraction of fat particles of < 1 micron in diameter, Intralipid and Liposyn II had a mean particle size of 374 and 313 nm, respectively. The admixtures containing electrolytes showed a decrease in mean particle size of about 7%. Admixtures with Intralipid contained 2 x 10(7) particles larger than 2 microns per milliliter (1.7% of total fat), compared with 1 x 10(6) particles per milliliter (0.05-0.15% of total fat) for admixtures with Liposyn II. The addition of electrolytes increased the particle counts for Liposyn II-containing admixtures. Upon storage, Intralipid-containing admixtures with electrolytes showed an initial increase followed by a decrease in the mean diameter of particles of < 1 micron. All the admixtures were stable in terms of pH and visual appearance. Intralipid-containing admixtures with electrolytes showed a decrease in the number of particles in the 2-60-microns size range, while Liposyn II-containing admixtures with electrolytes showed an increase.(ABSTRACT TRUNCATED AT 250 WORDS)

Drug Incompatibility↗