The main ingredients of Maobushisaishinto (MBST) are ephedrine (EP), methyl eugenol (ME), and aconitine (AC). The pharmacological effects are presumed to be due to the combined effects of these ingredients. In this study, we investigated the impact of the particles present in MBST suspensions on the absorption of the ingredients. Coarse, colloidal, and molecular dispersions were detected when MBST was dispersed in water at 25 and 70 °C. Regardless of temperature, the ratio of MBST in molecular dispersions was the highest, and the ratio of coarse dispersions was greater than that of colloidal dispersions. Particles ranging from 50 to 900 nm were observed in the colloidal dispersions prepared by treatment at 25 °C for 3 min. However, in 70 °C water, the mean particle size decreased, and the number of nanoparticles tended to increase. The levels of EP, ME, and AC in molecular dispersions were higher than those in coarse and colloidal dispersions, with no significant difference observed between the coarse and colloidal dispersions. On the other hand, in small intestinal penetration, the levels of EP, ME, and AC in colloidal dispersions were higher than those in the other two dispersions. Moreover, adding colloidal particles to the dissolved drug (molecular dispersions) increased the drug's permeability through the small intestinal membrane. In conclusion, colloidal particles are produced when MBST is suspended. Furthermore, we showed that these colloidal particles enhance the absorption of the main ingredients of MBST.

Hiroko Otake

Ryohei Kitashoji

Yuichi Endo

Takeshi Kotake

Noriaki Nagai

Chemical and Pharmaceutical Bulletin

CPB 涵盖制药和健康科学领域的各种化学主题，涉及生物活性化合物、天然产物和药物，而 BPB 涉及制药和健康科学领域的广泛生物学主题，包括从基础研究到临床研究的科学研究. FOR DETAILS OF THEIR RESPECTIVE SCOPES, PLEASE REFER TO THE SUBMISSION TOPIC CATEGORIES BELOW.TOPICS: ORGANIC CHEMISTRYIN SILICO SCIENCEINORGANIC CHEMISTRYPHARMACOGNOSYHEALTH STATISTICSFORENSIC SCIENCEBIOCHEMISTRYPHARMACOLOGYPHARMACEUTICAL CARE AND SCIENCEMEDICINAL CHEMISTRYANALYTICAL CHEMISTRYPHYSICAL PHARMACYNATURAL PRODUCT CHEMISTRYTOXICOLOGYENVIRONMENTAL SCIENCEMOLECULAR AND CELLULAR BIOLOGYBIOPHARMACY AND PHARMACOKINETICSPHARMACEUTICAL EDUCATIONCHEMICAL BIOLOGYPHYSICAL CHEMISTRYPHARMACEUTICAL ENGINEERINGEPIDEMIOLOGYHYGIENEREGULATORY SCIENCEIMMUNOLOGY AND MICROBIOLOGYCLINICAL PHARMACYMISCELLANEOUS.

The Chemical and Pharmaceutical Bulletin covers a wide range of chemical topics in the fields of pharmaceuticals and health sciences, including bioactive compounds, natural products, and drugs. The journal also addresses a broad spectrum of biological topics within pharmaceuticals and health sciences, encompassing scientific research from basic studies to clinical investigations. Specific topics include: organic chemistry, in silico science, inorganic chemistry, pharmacognosy, health statistics, forensic science, biochemistry, pharmacology, pharmaceutical care and science, medicinal chemistry, analytical chemistry, physical pharmacy, natural product chemistry, toxicology, environmental science, molecular and cellular biology, biopharmacy and pharmacokinetics, pharmaceutical education, chemical biology, physical chemistry, pharmaceutical engineering, epidemiology, hygiene, regulatory science, immunology and microbiology, clinical pharmacy, and miscellaneous.

《Chemical and Pharmaceutical Bulletin》涵盖了制药和健康科学领域的多种化学主题，涉及生物活性化合物、天然产物和药物等内容。同时，该期刊也关注制药和健康科学领域的广泛生物学主题，包括从基础研究到临床研究的科学探索。具体的主题包括：有机化学、计算科学、无机化学、药用植物学、健康统计学、法医学、生物化学、药理学、药学护理与科学、药物化学、分析化学、物理药理学、天然产物化学、毒理学、环境科学、分子与细胞生物学、生物药剂学与药代动力学、药学教育、化学生物学、物理化学、药学工程、流行病学、卫生学、监管科学、免疫学与微生物学、临床药学及其他相关领域。

Category	Quartile
医学	4
医学, 药物化学	4
医学, 化学综合	4
医学, 药学	4

Colloidal Particle in Suspensions of Maobushisaishinto Extract Granules Enhances Drug Intestinal Penetration

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Category	Quartile
PHARMACOLOGY & PHARMACY	3