王浆酸对辐射危害的辅助保护功能研究

目的研究王浆酸的辐射保护功能。方法以每日37、73、220mg/kg王浆酸灌胃小鼠30d后,给予一次性全身γ射线照射,进行小鼠外周血白细胞计数、小鼠骨髓细胞DNA含量测定、血清溶血素测定试验。结果实验前后各剂量组小鼠体重与对照组相比差异均无统计学意义(P0.05);辐照后对照组白细胞总数明显低于辐照前,辐射损伤模型成立。辐照后第3d各剂量组白细胞总数均高于对照组,低、高剂量组差异有统计学意义(P0.01,P0.05);高剂量组小鼠骨髓细胞DNA含量高于对照组,差异有统计学意义(P0.05),辐照后各剂量组小鼠血清半数溶血值(HC50)均高于对照组,但差异均无统计学意义(P0.05)。结论本实验条件下王浆酸对60 Co-γ诱发的辐射损伤有较好的辅助保护作用。     

脐带间充质干细胞移植治疗子宫切口瘢痕缺陷大鼠的疗效观察

目的:将脐带华通胶间充质干细胞(WJMSCs)移植到子宫切口瘢痕缺陷(PCSD)模型大鼠体内,探讨其治疗效果。方法:取雌性SD大鼠50只、将其随机分为3组:正常手术组(N-O组)10只、模型对照组(M-C组)20只和模型治疗组(M-T组)20只。孕第19天N-O组剖宫取胎后连续缝合子宫切口;M-C组与M-T组剖宫产术后子宫肌壁注射脂多糖(LPS)联合电凝(功率为10 W)子宫切缘,间断缝合切口。M-T组分A、B亚组(各10只),A组静脉注射0.5 m L+阴道灌注0.5 m L(1×10~9/L)WJMSCs,B组阴道灌注1 m L同浓度WJMSCs,每周1次,共3次;M-C亦分A、B亚组(各10只),与M-T组同样方法处理,仅将生理盐水替代WJMSCs。各组治疗后第1和4周,分别处死6和4只,留双侧子宫进行HE染色、Masson染色、肌动蛋白(actin)和细胞角蛋白免疫组化染色,通过体视学分析,检测子宫肌层和内膜的修复情况。结果:WJMSCs治疗后第1和4周,M-C组子宫肌层厚度和actin体积密度(Vv)均显著低于N-O组,肌层胶原纤维Vv和内膜缺陷率高于N-O组(P0.05);WJMSCs治疗后第1和4周,M-T的A和B组的肌层厚度和actin Vv均显著高于M-C组,肌层胶原纤维Vv低于M-C组;M-C组内膜缺陷率高于其它组(P0.05)。结论:WJMSCs可促进PCSD大鼠子宫肌层结构和功能的修复。静脉+局部联合治疗和单纯阴道治疗效果无明显差别。     

Royal jelly enhances migration of human dermal fibroblasts and alters the levels of cholesterol and sphinganine in an in vitro wound healing model

Oral administration of royal jelly (RJ) promotes wound healing in diabetic mice. Concerns have arisen regarding the efficacy of RJ on the wound healing process of normal skin cells. In this study, a wound was created by scratching normal human dermal fibroblasts, one of the major cells involved in the wound healing process. The area was promptly treated with RJ at varying concentrations of 0.1, 1.0, or 5 mg/ml for up to 48 hrs and migration was analyzed by evaluating closure of the wound margins. Furthermore, altered levels of lipids, which were recently reported to participate in the wound healing process, were analyzed by HPTLC and HPLC. Migration of fibroblasts peaked at 24 hrs after wounding. RJ treatment significantly accelerated the migration of fibroblasts in a dose-dependent manner at 8 hrs. Although RJ also accelerated the migration of fibroblasts at both 20 hrs and 24 hrs after wounding, the efficacy was less potent than at 8 hrs. Among various lipid classes within fibroblasts, the level of cholesterol was significantly decreased at 8 hrs following administration of both 0.1 ug/ml and 5 mg/ml RJ. Despite a dose-dependent increase in sphinganines, the levels of sphingosines, ceramides, and glucosylceramides were not altered with any concentration of RJ. We demonstrated that RJ enhances the migration of fibroblasts and alters the levels of various lipids involved in the wound healing process.     

洋参王浆咀嚼片的质量标准研究

目的制定洋参王浆咀嚼片质量标准。方法 采用TLC法对处方中的西洋参、蜂王浆两种组分进行定性鉴别；采用HPLC法对处方中西洋参的人参皂苷Re、Rg1和Rb1进行了含量测定。结果本方法线性关系良好，平均回收率为101．52％，RSD为0.51％。结论本法定性、定量检测准确、可靠，能有效控制洋参王浆咀嚼片的质量。     

REVERSIBLE PARASYMPATHETIC DYSAUTONOMIA FOLLOWING STINGING ATTRIBUTED TO THE BOX JELLY FISH (CHIRONEX FLECKERI)

Following a box jelly fish sting, a 52 year old Chinese fisherman developed acute abdominal distension, inability to pass urine and failure of erection.
Examination revealed gaseous abdominal distension and a distended urinary bladder. Absence of lachrimation and absence of changes in the R-R interval in the ECG during breathing and carotid sinus massage gave further evidence of parasympathetic dysautonomia. The patient made a complete recovery. The case highlights the occurrence of reversible parasympathetic dysautonomia following box jelly fish sting.     

隋唐"燕乐"考

隋唐燕乐,历来被认为是隋唐音乐的一个较大部类,是隋唐宫延音乐的代表.然而,唐人宫廷中作为音乐活动和音乐品种的总称,并没有"燕乐"一说,而较多的"宴乐"、"燕乐"的含义也并不一致."燕乐"一词在宫廷音乐活动中只在少部分史料中以十部乐之第一部的意义而存在,"宴乐"、"讌乐"二词在宫廷活动中是被较多使用的,但这两个词在不同文本中又有不同的语义和所指.     

Topical disposition of two strengths of a 125I-rhEGF jelly in rat skin wounds

Growth factors have proved to be an effective therapeutic strategy. However, some controversies have arisen concerning their efficacy in topical wound treatments. Stabilization of epidermal growth factors at the wound site and long-lasting receptor occupancy are important factors for wound repair. This study evaluated the cumulative profiles of two jellies containing 10 or 20 microg of 125I-rhEGF per gram of jelly, in a rat full-thickness skin lesion model. The prolonged time-courses at the wound sites for both strengths compared with saline solutions previously evaluated using a similar skin lesion model are reported. It seems that these two topical formulations that provide more sustained amounts of 125I-rhEGF over the period of sampling, would probably achieve the required wound healing response in terms of cell proliferation, collagen deposition and protein synthesis. Further studies need to be developed in order to elucidate whether such an in vivo disposition pattern is consistent with an earlier and stronger promotion of wound healing events.     

The cross-sectional area of umbilical cord components in normal pregnancy.

OBJECTIVE: To determine the normal cross-sectional areas of the umbilical vein, umbilical artery, and Wharton jelly in healthy pregnancies, and correlate the obtained values with fetal anthropometric parameters. METHODS: A cross-sectional study was performed with 312 women between the 24th and 39th weeks of a normal pregnancy. The cross-sectional areas of umbilical cord vessels were measured at the junction of the cord and fetal abdomen, and the values were subtracted from the total cord cross-sectional area to assess the cross-sectional area of the Wharton jelly. The anthropometric parameters analyzed were biparietal diameter, head circumference, femur length, and estimated fetal weight, and the Spearman correlation was used to assess the correlation between the cross-sectional areas of umbilical cord components and fetal anthropometric parameters. A polynomial regression analysis was performed to identify the curves that best adjusted to mean and standard deviation according to gestational age. RESULTS: A statistically significant correlation was observed between the cross-sectional areas of cord components and fetal anthropometric parameters (P<0.001) as well as gestational age (P<0.001). CONCLUSIONS: Reference measurements of the cross-sectional areas of umbilical cord components are important tools in the assessment of fetal growth.