Tianxiangdan Improves Coronary Microvascular Dysfunction in Rats by Inhibiting Microvascular Inflammation via Nrf2 Activation.

Background: Tianxiangdan (TXD) is used in traditional Chinese medicine because of its therapeutic and preventive effects in the treatment of coronary heart disease. However, the underlying mechanism of TXD in coronary microvascular disease (CMD) remains unclear.

Methods: A rat model of CMD was developed to study the mechanism of TXD activity.

[Characteristics of Elements and Potential Ecological Risk Assessment of Heavy Metals in PM at the Southwest Suburb of Chengdu in Spring].

PM samples were collected at the southwest suburb of Chengdu in spring (in May 2012 and 2014). The mass concentrations of PM were determined by the weight method, and 24 chemical elements in PM were analyzed by XRF. To study the pollution characteristics and sources of chemical elements, and the potential ecological risk of heavy metals in PM, the Geo-accumulation Index, Enrichment Factor, and Potential Ecological Risk Index methods were applied, respectively.