Feasibility of Predicting Pelvic Lymph Node Metastasis Based on IVIM-DWI and Texture Parameters of the Primary Lesion and Lymph Nodes in Patients with Cervical Cancer.

RATIONALE AND OBJECTIVES: To investigate the feasibility and value of intravoxel incoherent motion diffusion weighted imaging (IVIM-DWI) and texture parameters of primary lesions and lymph nodes for predicting pelvic lymph node metastasis in patients with cervical cancer. MATERIALS AND METHODS: A total of 143 patients with cervical cancer confirmed by surgical pathology were analyzed retrospectively and 125 patients were enrolled in primary lesions study, 83 patients and 134 lymph nodes were enrolled in lymph nodes study. Patients and lymph nodes were randomly divided into training group and test group at a ratio of 2: 1. The IVIM-DWI parameters and 3D texture features of primary lesions and lymph nodes of all patients were measured. The least absolute shrinkage and selection operator algorithm, spearman's correlation analysis, independent two-sample t-test and Mann-Whitney U-test were used to select texture parameters. Multivariate Logistic regression analysis and receiver operating characteristic curves were used to model and evaluate diagnostic performances. RESULTS: In primary lesions study, model 1 was constructed by combining f value, original_shape_Sphericity and original_firstorder_Mean of primary lesions. In lymph nodes study, model 2 was constructed by combining short diameter, circular enhancement and rough margin of lymph nodes. Model 3 was constructed by combining ADC, f value and original_glszm_Small Area Emphasis of lymph nodes. The areas under curve of model 1, 2 and 3 in training group and test group were 0.882, 0.798, 0.907 and 0.862, 0.771, 0.937 respectively. CONCLUSION: Models based on IVIM-DWI and texture parameters of primary lesions and lymph nodes both performed well in diagnosing pelvic lymph node metastasis of cervical cancer and were superior to morphological features of lymph nodes. Especially, parameters of lymph nodes showed higher diagnostic efficiency and clinical significance.

Effects of crushing and sieving on compounds contents of Euodiae Fructus and its solution / 中草药

Objective To study the effect factors and rules of the different crushing and sieving methods on the compounds contents of Euodiae Fructus (EF), and to propose an optimized crushing and sieving method which can reflect the sampling representativeness and reduce errors. Methods The bioactive compounds such as chlorogenic acid, hyperoside, dehydroevodiamine, evodiamine, rutaecarpine, and evocarpine were selected as the evaluation markers. The effects of the different crushing and sieving conditions were evaluated by comparing the contents and analytical precisions of EF components under different conditions by HPLC. The influencing factors and the rules were discussed and the suitable crushing and sieving method was then proposed. Results The contents of six components in EF were negatively correlated with the proportions of the endocarps in powders. Most intraday and intermediate precisions of six bioactive compounds don't meet the standards using the current pharmacopoeia method with RSD > 5%. And when all powders passing through 2# sieve, the good analytical precision and repeatability were obtained with RSD < 2%. Conclusion The cellulose particles, such as endocarps, are the key factors during the crushing and sieving process of the herbs. The crushing and sieving method with all powders passing through 2# sieve not only ensures the sampling representativeness, but also solves the analytical precision and accuracy.

Preliminary study of antiemetic components in Euodia rutaecarpa based on spectrum-effect correlation analysis / 药学学报

This study was designed to screen the antiemetic components of Euodia rutaecarpa, and elucidate its material basis on the spectrum-effect correlation analysis. The UHPLC-Q-TOF/MS (UHPLC-quadrupole time-of-flight mass spectrometry) technology was used to obtain the fingerprint of Euodia rutaecarpa extracts. The perfusion of copper sulfate was used as a model to study the antiemetic effect by vomiting. The orthogonal partial least squares (OPLS) method was used to analyze the spectrum-effect relationship. The results indicated the following compounds were the potential antiemetic components such as rutin, limonin, narcissoside, chrysoeriol-7-O-rutinoside, hyperoside, isorhamnetin-3-O-β-D-galactoside, 1-methyl-2-undecyl-4(1H)-quinolone, 1-methyl-2-[(Z)-4-nonenyl]-4(1H)-quinolone. This study provides the experimental basis in use of Euodia rutaecarpa in the future, and provides the research methods and ideas for the similar study on the pharmacodynamic material basis of traditional Chinese medicine.