Effect of polymer nanoparticles on atherosclerotic lesions and the associated mechanisms: a review / 生物工程学报

Polymer nanoparticles generally refer to hydrophobic polymers-based nanoparticles, which have been extensively studied in the nanomedicine field due to their good biocompatibility, efficient long-circulation characteristics, and superior metabolic discharge patterns over other nanoparticles. Existing studies have proved that polymer nanoparticles possess unique advantages in the diagnosis and treatment of cardiovascular diseases, and have been transformed from basic researches to clinical applications, especially in the diagnosis and treatment of atherosclerosis (AS). However, the inflammatory reaction induced by polymer nanoparticles would induce the formation of foam cells and autophagy of macrophages. In addition, the variations in the mechanical microenvironment of cardiovascular diseases may cause the enrichment of polymer nanoparticles. These could possibly promote the occurrence and development of AS. Herein, this review summarized the recent application of polymer nanoparticles in the diagnosis and treatment of AS, as well as the relationship between polymer nanoparticles and AS and the associated mechanism, with the aim to facilitate the development of novel nanodrugs for the treatment of AS.

Rationality of the processing methods of aconiti lateralis radix (Fuzi) based on chemical analysis / 药学学报

In this study, we explored the rationality of processing methods and mechanism of Aconiti Lateralis Radix (Fuzi) through comparing the chemical contents of diester alkaloids (DAs) and monoester alkaloids (MAs) in the raw material of Fuzi and its processed products. The results showed that the toxicity potency of MAs is at least lower than 1/64 to 1/180 of the toxicity potency of DAs. The contents of DAs in processed Fuzi decreased to 1/76.5 to 1/38.3 of the value of raw Fuzi. The contents of MAs in processed Fuzi significantly increased by 4.6 to 5.2 fold or basically the same as that of the raw Fuzi. The values of MAs/DAs of processed Fuzi were enhanced by 30 to 390 fold of the raw Fuzi. It was found that the contents of DAs were insignificantly different between "Wu dan fu pian" (steaming or stir-frying without Danba) and "Dan fu pian" (steaming or stir-frying with Danba). The result suggested that the abilities of "eliminating toxicity" of different processing methods were equivalent at all. In contrast, the contents of MAs contained in "Wu dan fu pian" were of 5.3 to 8.7 fold higher than the values in "Dan fu pian". This result suggested the processing method by steaming or stir-frying without Danba might have better effect for "conserving property" than the method processed with Danba stipulated by China Pharmacopoeia. We believe that the new processing method without Danba can be recommended in further application due to it offers a simple procedure and it will not introduce inorganic impurities in the products.

Speed up to formulate "National processing procedures of prepared slices of Chinese crude drugs", unified the national standards of prepared slices / 中国中药杂志

The prepared slices of Chinese crude drugs are growing important in recent years, and faced with new developments and opportunities. The author analyzed the importance of formulate national processing procedures of prepared slices of Chinese crude drugs combined actual work, proposed the overall objectives and tasks for the formulation, and emphasized to need to correctly deal with several important factors during the process of formulate "National processing procedures of prepared slices of Chinese crude drugs", unified the national standards of prepared slices, solved the real problems that the prepared slices of Chinese crude drugs industry faced.

Determination of tricin in malt by HPLC / 中草药

Objective To develop an HPLC method for the quantitative analysis of tricin in malt. Methods HPLC method was used. Analysis was performed on Spherigel C_ 18 column (150 mm?4.6 mm, 5 ?m) with acetonitrile-water-tetrahydrofuran-methanoic acid (26∶74∶10∶1) as mobile phase. The detection wavelength was 350 nm, flow rate was 1.0 mL/min, and the analysic volumn was set at 20 ?L. Results The calibration curve of tricin was linear in the range of 0.22-2.15 mg/L (r=0.999 8). The average recovery rate of tricin was 97.4% (RSD=1.7%) (n=9). Conclusion The method can be used to determine tricin in raw malt quantitatively.