非小细胞肺癌伴神经内分泌分化的研究

目的：研究非小细胞肺癌的类型、分化程度与神经内分渥分化间接的关系。方法：随机收集４３例手术切除石蜡包埋的非小细胞肺癌的标本，采用７种神经内分泌抗体，用免疫组化ＬＳＡＢ法研究其神经内分泌分化。结果：阳性率为５３．４％，其中鳞癌和腺癌的阳性率分别为：５２．９％和５８．３％；而２例大细胞癌皆阴性。结论：非小细胞肺癌的组织类型与神经内分泌表达的种类有一定关系；而组织学类型和癌细胞分化程度与神经内分泌分化的     

肝动脉及部分脾动脉栓塞治疗肝癌伴脾功能亢进

目的：临床采用肝动脉栓塞化疗联合部分脾动脉栓治疗原发性肝癌合并脾功能亢进的效。方法：住院原了肝癌伴肝硬化脾功能亢进患者３４例,采用经皮穿刺肝动脉插管化疗栓塞及脾动脉部分栓塞治疗。治疗前后行检测肝功能、指标、外周血及Ｂ超、ＣＴ等。结果：术后ＣＴ随访显示肝脏瘤体缩小２４例,占７０．５８％（２４／３４）,其中缩小５０％以上者１３例,２例治疗后肝功能行二期抹切除;脾脏栓塞后ＣＴ复查缩小,最多３４．７％,最     

Stem cell therapy as an emerging paradigm for stroke （ STEPS） Ⅱ

Cell-based therapies represent a new therapeutic approach for stroke.In 2007,investigators from academia,industry leaders,and members of the National Institutes of Health crafted recommendations to facilitate the translational     

Predictors of cerebral palsy in very preterm infants: the EPIPAGE prospective population‐based cohort study

Aim The aim of this study was to assess the independent role of cerebral lesions on ultrasound scan, and several other neonatal and obstetric factors, as potential predictors of cerebral palsy (CP) in a large population‐based cohort of very preterm infants. Method As part of EPIPAGE, a population‐based prospective cohort study, perinatal data and outcome at 5 years of age were recorded for 1812 infants born before 33 weeks of gestation in nine regions of France in 1997. Results The study group comprised 942 males (52%) and 870 females with a mean gestational age of 30 weeks (SD 2wks; range 24–32wks) and a mean birthweight of 1367g (SD 393g; range 450–2645g). CP was diagnosed at 5 years of age in 159 infants (prevalence 9%; 95% confidence interval [CI] 7–10%), 97 males and 62 females, with a mean gestational age of 29 weeks (SD 2wks; range 24–32wks) and a mean birthweight of 1305g (SD 386g; range 500–2480g). Among this group, 67% walked without aid, 14% walked with aid, and 19% were unable to walk. Spastic, ataxic, and dyskinetic CP accounted for 89%, 7%, and 4% of cases respectively. The prevalence of CP was 61% among infants with cystic periventricular leukomalacia, 50% in infants with intraparenchymal haemorrhage, 8% in infants with grade I intraventricular haemorrhage, and 4% in infants without a detectable cerebral lesion. After controlling for cerebral lesions and obstetric and neonatal factors, only male sex (odds ratio [OR] 1.52; 95% CI 1.03–2.25) and preterm premature rupture of membranes or preterm labour (OR 1.72; 95% CI 0.95–3.14) were predictors of the development of CP in very preterm infants. Interpretation Cerebral lesions were the most important predictor of CP in very preterm infants. In addition, infant sex and preterm premature rupture of membranes or preterm labour were also independent predictors of CP.     

Polysaccharides from the root of Angelica sinensis promotes hematopoiesis and thrombopoiesis through the PI3K/AKT pathway

Background

Dozens of Traditional Chinese Medicine (TCM) formulas have been used for promotion of "blood production" for centuries, and we are interested in developing novel thrombopoietic medicines from these TCMs. Our previous studies have demonstrated the hematopoietic effects of DangGui BuXue Tong (DBT), a formula composed of Radix Angelicae Sinensis and Radix Astragali in animal and cellular models. As a step further to identify and characterize the active chemical components of DBT, we tested the hematopoietic and particularly, thrombopoietic effects of polysaccharide-enriched fractions from the root of Radix Angelicae Sinensis (APS) in this study.

Methods

A myelosuppression mouse model was treated with APS (10 mg/kg/day). Peripheral blood cells from APS, thrombopoietin and vehicle-treated samples were then counted at different time-points. Using the colony-forming unit (CFU) assays, we determined the effects of APS on the proliferation and differentiation of hematopoietic stem/progenitor cells and megakaryocytic lineages. Using a megakaryocytic cell line M-07e as model, we analyzed the cellular apoptosis progression with and without APS treatment by Annexin V, Mitochondrial Membrane Potential and Caspase 3 assays. Last, the anti-apoptotic effect of APS on cells treated with Ly294002, a Phosphatidylinositol 3-Kinse inhibitor (PI3K) was also tested.

Results

In animal models, APS significantly enhanced not only the recovery of platelets, other blood cells and their progenitor cells, but also the formation of Colony Forming Unit (CFU). In M-07e cells, we observed the anti-apoptotic effect of APS. Treatment by Ly294002 alone increased the percentage of cells undergoing apoptosis. However, addition of APS to Ly294002-treated cells significantly reduced the percentage of cells undergoing apoptosis.

Conclusions

APS promotes hematopoiesis and thrombopoiesis in the mouse model. This effect likely resulted from the anti-apoptosis activity of APS and is likely to involve the PI3K/AKT pathway.