高致病性禽流感病人救治管理探讨

2005年至2006年间，在皖南休宁县和屯溪区农村集中网报并纳入特殊疾病救治的有3个病人，其中确诊为人感染高致病性禽流感（H5N1）2例，救治成功1例。对前后3例的救治情况比较研究，认为人感染高致病性禽流感病人救治管理的核心环节有三：一是提高居民的择医意识，及时到专科诊治是救治成功的前提；二是提高基层医生专业知识水平，及时发现及时转医是核心环节；三是提高医院专科的救治能力，制订切实可行的应急预案，优化救治队伍，做出快速的反应，做到有效施治是救治成功的保证。     

Experimental study on the immunosuppressive effects of gui zhi tang

In this paper the immunosuppressive effects of Gui Zhi Tang (a famous Chinese medicine) on the murine immune functions are reported. Varying dosages of Gui Zhi Tang administrated orally, i.p. and i.m. were able to inhibit the amounts of PFC, SRFC and the DTH response induced by BSA and the proliferation response of murine spleen cells to Con A and LPS. Further studies showed that Gui Zhi Tang had the inhibitory effect on Interleukin-2 production of murine spleen cells, which might be one of the mechanisms leading to the immunosuppressive effects of Gui Zhi Tang.     

Fabrication of porous hollow silica nanoparticles and their applications in drug release control.

Preparation and characterization of porous hollow silica nanoparticles (PHSN) for controlled release applications were investigated. Through orthogonally designed experiments, the optimal synthesis conditions for the preparation of PHSN were obtained and the produced PHSN were characterized by BET, SEM, TEM and IR. Scanning and transmission electron microscopy images revealed their hollow shell-core structure and also demonstrated that the size and shape of PHSN are determined by the templating CaCO3 nanoparticles. The produced PHSN were applied as a carrier to study the controlled release behaviors of Brilliant Blue F (BB), which was used as a model drug. Being loaded into the inner core and on the surfaces of the nanoparticles, BB was released slowly into a bulk solution for about 1140 min as compared to only 10 min for the normal SiO2 nanoparticles, thus exhibited a typical sustained release pattern without any burst effect. In addition, higher BET of the carriers, lower pH value and lower temperature prolonged BB release from PHSN, while stirring speed showed little influence on the release behavior. It showed that PHSN have a promising future in controlled drug delivery applications.