ABSTRACT
Objective: To establish the chemical fingerprint and multi-index components determination of Tibetan medicine Bangna of Aconitum genus, and provide references for the formulation of quality standards of multi-base original medicinal materials and clinically safe medication. Methods: HPLC fingerprint of Bangna was established and evaluated by the similarity evaluation system of TCM. In addition, the content of the seven components of Bangna from 30 batches and the difference of chemical information between the two species of Bangna was investigated by principal component analysis and orthogonal partial least squares discrimination analysis (OPLS-DA) respectively. Results: A total of 17 common peaks were identified in the fingerprint that was established by the determination of 30 batches of Bangna, and seven components of which were identified with 12-epi-napelline, songorine, benzoylmesaconitine, benzoylaconine, mesaconitine, aconitine, 3-acetylaconitine. Based on similarity results, the fingerprint had good consistency between the same origin and minor diversity between the different sources. The results of principal component analysis and OPLS-DA showed that there were some differences in the content of seven components between the two species. Based on the results of OPLS-DA and t test, it could be determined that the contents of 12-epi-napelline and aconitine of Aconitum flavum were significantly higher than those in Aconitum pendulum (P < 0.01). Conclusion: The fingerprint and multi-component quantitative analysis methods were used for the quality and clinically safe medication control of Bangna in this paper is simple, easy to operate, and informative. Moreover, it is necessary to establish and improve the limit determination of diester alkaloids.
ABSTRACT
Aconitum flavum Hand.-Mazz., Ranunculaceae, has been used for the treatment of rheumatism, traumatic injury in folk and clinical medicine, but the alkaloids has high toxicity. This study was designed to investigate the acute toxicity, anti-inflammatory and antinociceptive activities of non-alkaloids fractions from A. flavum in rodents. The anti-inflammatory activity was evaluated by inflammatory models of dimethylbenzene-induced ear vasodilatation and acetic acid-induced capillary permeability enhancement test in mice and carrageenan-induced paw edema in rats whereas the antinociceptive activity was evaluated using acetic acid-induced writhes, hot plate test and formalin test in mice. The result showed that the LD50 value of BtOH and EtOAc fractions could not be determined as no lethality was observed up to 40 g/kg (p.o.) in mice. BtOH fraction significantly decreased the dimethylbenzene-induced ear vasodilatation, carrageenan-induced paw edema and acetic acid-induced capillary permeability. EtOAc fraction only significantly attenuated paw edema and capillary permeability at the dose of 500 mg/kg. In antinociceptive test, BtOH and EtOAc fractions significantly reduced the writhing number evoked by acetic acid injection and the licking time in both phases of the formalin test. Meanwhile BtOH and EtOAc fractions had significant effect on hot plate test after 90 min. Our data indicate that the BtOH and EtOAc fractions of NAF are no toxicity. BtOH and EtOAc fractions not only inhibit inflammatory and peripheral inflammatory pain but also have central antinociceptive effect.