[Objective] This study was to explore the effect of three precursors on the accumulation of principal volatile oil constituents in tissue culture plantlets of Atractylodes lancea (Thunb.) DC. with the aim to provide...[Objective] This study was to explore the effect of three precursors on the accumulation of principal volatile oil constituents in tissue culture plantlets of Atractylodes lancea (Thunb.) DC. with the aim to provide references for the improvement of artificial cultivated A. lancea quality. [Method] Three precursors were added into the MS rooting medium for A. lancea tissue culture plantlets and the volatile oil was extracted by ultrasonication after cultured for several days. The content of atractylon, atractylol, β-eucalyptol and atractydin in the volatile oil were determined by using gas chromatography method. [Result] The addition of xylose, isoprene and tetrahydrofuran impacted the growth indicators, yield of volatile oil and relative percentage content of the four constituents of A. lancea tissue culture plantlets. In the 6 g/L xylose optimized medium, the atractylon and β-eucalyptol content reached up to 4.23% and 56.34%, respectively, 1.41% and 1.66% higher than the control; although the addition of isoprene into medium raised the atractylon content, the accumulation of total volatile oil was inhibited that it decreased by 23.67%, 31.06% and 7.10% to the control; for the tetrahydrofuran optimized medium, the content of atractylon, atractylol and atractydin all increased, and the total volatile oil content increased by 49.97% to the control when the concentration of tetrahydrofuran was 0.07 g/L. [Conclusion] The addition of xylose and tetrahydrofuran promoted the accumulation of principal constituents of the volatile oil, whereas the addition of isoprene inhibited the accumulation.展开更多
Cholangiocarcinoma(CCA), the adenocarcinoma of the biliary duct, is commonly reported in Asia with the highest incidence in northeastern Thailand. Chemotherapy of this type of cancer is limited due to the lack of effe...Cholangiocarcinoma(CCA), the adenocarcinoma of the biliary duct, is commonly reported in Asia with the highest incidence in northeastern Thailand. Chemotherapy of this type of cancer is limited due to the lack of effective chemotherapeutic drugs. A series of previous studies support further research and development of Atractylodes lancea(Thunb) DC.(AL) as a potential candidate for the treatment of CCA as a crude ethanolic extract. In the present study, we aimed to develop an oral pharmaceutical formulation(capsule) of the standardized AL crude ethanolic extract for further clinical development in patients with CCA. Major steps included macroscopic and microscopic authentication of the AL rhizomes, preparation of standardized AL extract, preparation of oral pharmaceutical formulation(capsule) of the standardized AL extract, quantitative and qualitative analysis of the marker compound(atractylodin) in the formulated AL extract, evaluation of contaminations of heavy metals, pesticides residues, and microorganisms in the ground AL rhizomes and the formulated(capsule) powder of AL, physicochemical and pharmaceutical properties of the formulated AL extract/capsule, and cytotoxicity evaluation of the formulated AL extract. Results of all evaluations confirmed satisfactory pharmaceutical properties of oral(capsule) formulation of the standardized AL extract.展开更多
基金Supported by the National Natural Science Foundation of China(31070443)the National Science Foundation of China for Talent Training in Basic Research(J1103507)+1 种基金The Priority Academic Program Development of Jiangsu Higher Education Institutions,Innovation Promotion Project of Nanjing Municipal Science and Technology Commissions(201105058)the Practice and Innovation Training Program for the Students of Nanjing Normal University~~
文摘[Objective] This study was to explore the effect of three precursors on the accumulation of principal volatile oil constituents in tissue culture plantlets of Atractylodes lancea (Thunb.) DC. with the aim to provide references for the improvement of artificial cultivated A. lancea quality. [Method] Three precursors were added into the MS rooting medium for A. lancea tissue culture plantlets and the volatile oil was extracted by ultrasonication after cultured for several days. The content of atractylon, atractylol, β-eucalyptol and atractydin in the volatile oil were determined by using gas chromatography method. [Result] The addition of xylose, isoprene and tetrahydrofuran impacted the growth indicators, yield of volatile oil and relative percentage content of the four constituents of A. lancea tissue culture plantlets. In the 6 g/L xylose optimized medium, the atractylon and β-eucalyptol content reached up to 4.23% and 56.34%, respectively, 1.41% and 1.66% higher than the control; although the addition of isoprene into medium raised the atractylon content, the accumulation of total volatile oil was inhibited that it decreased by 23.67%, 31.06% and 7.10% to the control; for the tetrahydrofuran optimized medium, the content of atractylon, atractylol and atractydin all increased, and the total volatile oil content increased by 49.97% to the control when the concentration of tetrahydrofuran was 0.07 g/L. [Conclusion] The addition of xylose and tetrahydrofuran promoted the accumulation of principal constituents of the volatile oil, whereas the addition of isoprene inhibited the accumulation.
基金Financial support by National Research Council of Thailand(NRCT)Center of Excellence in Pharmacology and Molecular Biology of Malaria+1 种基金Cholangiocarcinoma and Chulabhorn International College of Medicine(CICM)Thammasat University,Thailand
文摘Cholangiocarcinoma(CCA), the adenocarcinoma of the biliary duct, is commonly reported in Asia with the highest incidence in northeastern Thailand. Chemotherapy of this type of cancer is limited due to the lack of effective chemotherapeutic drugs. A series of previous studies support further research and development of Atractylodes lancea(Thunb) DC.(AL) as a potential candidate for the treatment of CCA as a crude ethanolic extract. In the present study, we aimed to develop an oral pharmaceutical formulation(capsule) of the standardized AL crude ethanolic extract for further clinical development in patients with CCA. Major steps included macroscopic and microscopic authentication of the AL rhizomes, preparation of standardized AL extract, preparation of oral pharmaceutical formulation(capsule) of the standardized AL extract, quantitative and qualitative analysis of the marker compound(atractylodin) in the formulated AL extract, evaluation of contaminations of heavy metals, pesticides residues, and microorganisms in the ground AL rhizomes and the formulated(capsule) powder of AL, physicochemical and pharmaceutical properties of the formulated AL extract/capsule, and cytotoxicity evaluation of the formulated AL extract. Results of all evaluations confirmed satisfactory pharmaceutical properties of oral(capsule) formulation of the standardized AL extract.