Publications by authors named "De-qin Zhang"

Ethnopharmacological Relevance: Cimicifuga heracleifolia Kom. (C. heracleifolia) has demonstrated efficacy in treating gastrointestinal disorders, including splenasthenic diarrhea.

View Article and Find Full Text PDF
Article Synopsis
  • Sesquiterpene dimers are primarily found in the Asteraceae family, but there are inconsistencies in their reported structures.
  • The study describes ten dimers sourced from certain flowers, including important configurational revisions for several known compounds.
  • Additionally, five new metabolites were identified, and some of these compounds showed inhibition of nitric oxide production in activated macrophages at varying concentrations.
View Article and Find Full Text PDF

Introduction: Alkaloids exist in various herbal medicine widely and exhibit diverse biological and pharmacological activities. p-Sulphonatocalix[6]arenes (SC6A) and p-sulphonatocalix[8]arenes (SC8A) are water-soluble supramolecular macrocycles and are applied to the extraction of alkaloids from herbal products.

Objective: In this study, an innovative method of SC6A/SC8A assisted extraction of the alkaloids from herbs was established.

View Article and Find Full Text PDF

Introduction: Folium nelumbinis is used as vegetable, functional food and herbal medicine in Asia. p-Sulfonatocalix[6]arene (SC6A) is a water-soluble supramolecular macrocycle and has never been applied to the extraction of herbal products.

Objective: In this study, SC6A-assisted extraction of nuciferine from Folium nelumbinis has been carried out to develop an eco-friendly extraction process with high extraction efficacy and easy operation.

View Article and Find Full Text PDF

The bitter taste is one of the important properties among five flavors of Chinese materia medica (CMM), characterized by downbearing and discharging, drying dampness, and consolidating Yin. In common CMM, bitter-taste CMM accounts for a large proportion, indicating the importance of it. Through the efficacy of clearing away heat and dampness, reducing fire and removing toxin, bitter-taste CMM has achieved good results in treating diabetes in clinical application, proving their definite therapeutic effect on regulating glucose and lipid metabolism (main features of diabetes).

View Article and Find Full Text PDF

Tangzhiqing formula, a Chinese herbal formula, is used for the treatment of type II diabetes and prediabetes. Although its effectiveness has been certified by clinical use, its absorbed chemical constituents are not comprehensively represented. Thence, in order to reveal potential bioactive components and metabolism of Tangzhiqing formula, an ultra-high performance liquid chromatography with quadrupole time-of-flight mass spectrometry method was developed.

View Article and Find Full Text PDF

Paeonol, an active constituent in the root bark of Paeonia suffruticosa Andrews, is used to treat inflammation, headache and other diseases in clinic. Though the data on pharmacological researches of paeonol abounds, its metabolic profile is not so clear. It is essential to systematically characterize the in vivo metabolites in order to better understand its mechanism of action.

View Article and Find Full Text PDF

Quercetin, a kind of major flavonoid found in many traditional chinese medicines, is an effective substance for treatments such as lowering blood lipids. However, the studies on quercetin have been mainly focused on its pharmacological effect; the treatment of diseases on a material basis, particularly the metabolites derived from quercetin in vivo, has not been evaluated. In this study, we determined the levels, distributions and types of quercetin's metabolites in plasma, urine, feces and bile of rats after a single oral administration of quercetin at a dose of 80 mg/kg, using ultra-performance liquid chromatography/quadrupole-time-of-flight mass spectrometry (UPLC-Q-TOF/MS).

View Article and Find Full Text PDF

The identification of rapid, sensitive and high‑throughput biomarkers is imperative in order to identify individuals harmed by radiation accidents, and accurately evaluate the absorbed doses of radiation. DNA microarrays have previously been used to evaluate the alterations in growth/differentiation factor 15 (GDF15) gene expression in AHH‑1 human lymphoblastoid cells, following exposure to γ‑rays. The present study aimed to characterize the relationship between the dose of ionizing radiation and the produced effects in GDF‑15 gene expression in AHH‑1 cells and human peripheral blood lymphocytes (HPBLs).

View Article and Find Full Text PDF

Nuciferine, a major alkaloid found in Nelumbinis Folium, exhibits a broad spectrum of bioactivities, such as antiobesity, anti-diabetes and anti-inflammatory. However, many research regarding nuciferine focused on the extraction, isolation and biological activity, the metabolism is not comprehensively explained in vivo. Thence, the present of this paper is to establish a simple method for speculating metabolites of nuciferine.

View Article and Find Full Text PDF

Property and flavor theory of traditional Chinese medicine (TCM) is the core base for clinical treatment of diseases. However, few research about its chemical and biological characterization was performed. In this paper, network pharmacology was adopted to review patterns around the theory of TCM.

View Article and Find Full Text PDF

Purpose: To identify new ionizing radiation (IR)-sensitive genes and observe the dose-effect of gene expression alteration (GEA) induced by IR.

Materials And Methods: Microarray was used to screen the differentially expressed genes in human lymphoblastoid cells (AHH-1) using three doses of (60)Co γ-rays (0.5-8 Gy at 1 Gy/min).

View Article and Find Full Text PDF

Chonghe gel originated from the Chinese ancient prescription, can be used for the treatment of diabetic foot. This experiment was to study the transdermal absorbability of paeoniflorin and osthole in Chonghe gel . Franz diffusing cells method was adopted for the in vitro model of rat belly skins.

View Article and Find Full Text PDF

Ethnopharmacological Relevance: TZQ has been used in traditional Chineses medicine for treating diabetes. Based on the recipe of traditional anti-diabetic formula TZQ, we have developed TZQ-F which has been in phase 2 clinical trails. To study the mechanisms by which TZQ-F ameliorates diabetes, we examined whether treatment with TZQ-F improves hyperinsulinemia, hyperglycemia and obesity in type 2 diabetic KKA(y) mice and whether this is associated with an improvement of adipocyte differentiation and insulin action.

View Article and Find Full Text PDF

This article reviews rectification and protection of Chinese patent medicines, establishment and improvement of the new drug approval, and historical evolution of the pharmacopoeia of the People's Republic of China. The article analyzes the present situation and the challenges of quality standardization of Chinese patent medicines in the new era. The article also points out strategies and guidelines to be taken to promote the globalization of Chinese patent medicines and compliance with the international standards.

View Article and Find Full Text PDF

Objective: To investigate the behavioral changes and the levels of monoamine neurotransmitters in the anterior cortex in the olfactory bulb damage rats after being treated with Guanyu capsules (GYC).

Method: Open-field test and step-down passive avoidance test were used to observe the behavior in model rats. HPLC-ECD was used to analyze the influences of GYC on the levels of monoamine neurotransmitters.

View Article and Find Full Text PDF

Objective: To study the effects of Qilan Tangzhining capsule on glucose and lipid metabolism in diabetes mellitus and hyperlipemia.

Method: Rats were fed with high sugar and fat food for 2 months, then 2% streptozocin (STZ, 30 mg kg(-1)) was injected intraperitoneally to induce hyperglycemia and hyperlipemia. After the model rats were administrated drugs, the blood glucose, the serum lipids, and the histopathology of the liver and pancreas were observed.

View Article and Find Full Text PDF