Clinical analysis of cerebral hemorrhage associated with nephrotic syndrome / 中国神经精神疾病杂志

Objective To explore the clinical features of cerebral hemorrhage associated with nephrotic syndrome (NS) as well as its underlying pathogenesis. Methods The clinical material of seven NS patients with cerebral hemorrhage were analyzed. Results The age of the seven patients was ranged from 5 to 56 years, including four male and three female. There were four patients with coagulopathy, six patients with elevated level of D-dimer and four patients with renal function impairment. Six patients had hyperlipidemia and four patients had severe proteinuria (>5 g/d). In the acute phase of hemorrhage onset, five patients developed cerebral hemorrhage in the lobes, two patients in the basal ganglia. Three patients were in coma on the first day of hemorrhage. On the 30th day after cerebral hemorrhage onset, four patients died and two patients had moderate cognitive dysfunction (modifed Rankin Scale, 3-5). Conclusion The patients of cerebral hemorrhage associated with NS may be in a serious illness state and have poor prognosis. Most of patients have elevated level of D-dimer, hyperlipidemia, and severe proteinuria, the biochemical abnormalities associated with NS. Most hemorrhages occur in the lobes which may be caused by coagulopathy.

ROS-mediated mechanisms：an anticancer strategy / 中国生化药物杂志

Under the influence of oncogenic signals and abnormal metabolism, the redox status of cancer cells often differs from that of the normal cells, manifesting as elevated generation of reactive oxygen species( ROS) and oxidative stress.Many signaling pathways involved in tumorigenesis can directly or indirectly regulate ROS metabolism.Currently, the biological significance of increased ROS in cancer cells is still somewhat controversial.ROS on the one hand can promote cancer development and drug resistance, and on the other hand can also cause cell injury and even cell death.To maintain cell viability and proliferation, cancer cells usually up-regulate their antioxidant capacity in adaptation to the intrinsic oxidative stress.Such adaptive mechanisms to oxidative stress are highly important in both cancer development and also play a major role in cancer cell response to therapy.Compelling evidences from recent studies have suggested that targeting the redox regulation mechanisms through proper intervention strategies may have significant therapeutic implications in cancer treatment.This article will focus on alterations of redox status in cancer cells, their adaptation to oxidative stress, and the underlying mechanisms.Potential therapeutic strategies based on such biochemical characteristics of cancer cells will also be discussed.

Preparation of Lysozyme-loaded PLGA Microspheres by SPG Membrane Emulsification / 中国药师

Objective:To develop a new preparation process of PLGA microparticles for protein drugs by SPG membrane emulsifi-cation combined with W/O/W double emulsion-solvent technique. Methods:Lysozyme was used as the model drug to prepare the mi-croparticles. The influence of formula factors on the properties of the microparticles was studied, and the physicochemical properties, in vivo compatibility and degradation of the microparticles were investigated as well. Results:The drug loading of lysozyme-loaded mi-croparticles was 35%, the entrapment efficiency was 72. 43% and the average size was 63. 89 μm with PDI of 0. 675. DSC and FTIR showed that lysozyme was entrapped in the microparticles. The microspheres had promising biocompatibility and sustained degradation in vivo. Conclusion:The paper describes a new satisfactory preparation process of PLGA microparticles for protein drugs with good in vitro and in vivo properties.

Study on Quality Standard for Yunüjian Granules / 中国药师

Objective:To establish the quality standard for Yunüjian granules. Methods:Rehmannia glutinosa, rhizoma anemar-rhenae and achyranthes in the granules were identified by TLC. The HPLC method was adopted. A SunfireTM C18 column (250 mm × 4. 6 mm, 5 μm) was used with the mobile phase consisting of acetonitrile-0. 1% acetic acid solution(16∶84) at the column tempera-ture of 30 ℃. The flow rate was 1. 0 ml·min-1 ,the detection wavelength was 334nm, and the imjection volume was 10 μl. Results:The TLC spots of verbascoside, and sarsasapogenin in rhizoma anemarrhenae and cyasterone in achyranthes were quite clear with good seperation. The linear range of verbascoside was within the range of 0.163-0.612 μg(r=0.999 9), and the average recovery was 101. 3%(RSD=2. 7%,n=6). Conclusion:The method is simple, reliable and accurate, and can be applied in the quality control of Ynnüjian granules.