Immunoregulatory effect of artesunate on allergic contact dermatitis and its mechanism / 药学学报

This study is to elucidate the immunoregulation mechanisms of artesunate (AST) on allergic contact dermatitis (ACD). Pharmacodynamics analyses, HE staining, semi-quantitative RT-PCR and Western blotting were used to explore the effects of AST on the related cytokines, transcription factor and signaling molecule of ACD respectively. The results indicated that topical administration of AST not only reduced the increase of ear swelling, spleen index and inflammatory cells infiltration in ACD mice, but also inhibited remarkably the expression of IFN-gamma, T-bet and NF-kappaB p65. It's suggested that AST could exhibit suppressive effects on inflammatory response and immune function of ACD, which indicates the possibility of developing AST as a novel immunoregulatory agent in the treatment of ACD and other immune-related diseases.

Rotational DSA assessment of intracranial aneurysms / 介入放射学杂志

Objective To compare rotational DSA with routine DSA in the assessment of intracranial aneurysms. Methods Conventional anteroposterior, lateral and oblique views of DSA and rotational DSA were respectively performed in 20 patients suspected of intracranial aneurysms in subarachnoid hemorrhage using DSA (Philips Integris V 3000DSA system). Images were compared for localization of the aneurysm, shape of the aneurysmal neck and vascular branch anatomy. Results Among 20 patients, only 18 intracranial aueurysms were found by convertional DSA and the other two were only by the rotational DSA. Furthermore, conventional DSA examination could not clarify the relationships of 6 (6/18) aneruysms with their parent arteries and with the vascular branch anatomy including the aneurysmal neck could not be clarified in 7 (7/18) patients. However, shape of the aneurysms and visibility of the aneurysmal neck could be clarified after using the rotational DSA, and meanwhile, vascular anatomy can be indentified with the rotational DSA. Conclusion Rotational DSA often allows better visibility of vascular anatomy and aneurysmal neck compared with conventional DSA, offering more important information for operation.