感觉神经(元)对失神经骨骼肌超微结构保护作用的实验研究

目的观察感觉神经（元）对失神经骨骼肌超微结构的保护作用。方法60只SD大鼠,按手术先后顺序随机分成10组,每组6只。A组(对照组)肱二头肌完全失神经支配。B～E组(实验组)B组为失神经支配加感觉神经种植组,C组为失神经支配加感觉神经寄养组,D组为失神经支配加背根神经节种植组,E组为节前撕脱的感觉神经种植组。术后1、3个月取材,各组又分为二个时间组。用透射电镜观察肌肉超微结构的变化。结果与对照组相比,各实验组肌肉退变核数少、线粒体肿胀及肌质网扩张程度轻、毛细血管/肌纤维数比值大、间质胶原纤维和成纤维细胞少、肌丝肌节排列整齐。结论感觉神经（元）对失神经骨骼肌超微结构有保护作用。     

银杏叶提取物EGb 761对失神经骨骼肌Na+-K+-ATP酶活性的影响

目的观察银杏叶提取物(ginkgo biloba extract,EGb 761)对失神经肌肉Na+-K+-ATP酶活性的影响.方法选用SD大鼠16只,按术后注射药物的不同随机分为银杏叶提取物组(实验组)和生理盐水组(对照组).显露左侧坐骨神经,切断并切除0.5 cm神经段.分别将神经远、近端反折后结扎.术后两组分别经腹腔注射EGb 761(100 mg/kg-1*d-1)和同体积的生理盐水.术后6周取左侧小腿三头肌,测定其Na+-K+-ATP酶活性.结果实验组失神经肌肉Na+-K+-ATP酶的活性优于对照组,两者差异有显著性意义(t= 2.51,P < 0.05).结论银杏叶提取物能改善大鼠失神经骨骼肌Na+-K+-ATP酶的活性,表明其对失神经肌萎缩有一定的保护作用.     

Correlation between pathological types of parathyroid and clinical manifestations in patients with renal secondary hyperparathyroidism

Objective To analyze the correlation between the pathological types of parathyroid and clinical manifestations in patients with renal secondary hyperparathyroidism (SHPT), so as to improve the efficacy and safety of treatment. Methods The pathological and clinical data of 130 patients with renal SHPT and maintenance hemodialysis (MHD) who had undergone total parathyroidectomy with autotransplantation (TPTX+AT) were collected. A total of 545 parathyroid glands were obtained and 998 slices were made and read. According to the pathological types of parathyroid hyperplasia, the patients were divided into diffuse hyperplasia (DH) group, diffuse between hyperplasia and nodular hyperplasia (DH/NH) group as well as nodular hyperplasia (NH) group. The clinical and biochemical characteristics of different groups before and after operation (1-, 3-, 6-, 9-, 12-month) were compared and analyzed by statistical tests. Results (1) The preoperative status: the dialysis age, serum calcium as well as incidence of bone pain, skin itching and shorten height in the NH group were significantly higher than those in the DH group (all P＜0.05), and the serum phosphorus and iPTH in the NH group were significantly higher than those in DH and DH/NH group (all P＜0.05). (2) The postoperative status: the serum calcium of the NH group at 1-month was lower than that of the DH group, and the incidence of hypocalcemia of the NH group at 1-month was higher than that of the DH group (P＜0.05); the serum phosphorus at 3-, 6-, 9-month and iPTH at 1-, 3-month of the NH group were significantly lower than that of the DH group (all P＜0.05), and the serum phosphorus at 3-month and iPTH at 1-month of the NH group were lower than that of the DH/NH group (all P＜0.05). Among the 3 groups the serum phosphorus change from 1 to 12 months had difference (F=3.241, P=0.042), while the differences of serum calcium and iPTH changes were statistically insignificant. Conclusions The clinical manifestations, serum calcium, phosphorus and iPTH in patients with renal SHPT before and after TPTX+AT are closely related to the pathological types of parathyroid hyperplasia. Compared with the DH patients, before the operation the NH patients have longer dialysis age, more serious the clinical symptoms such as bone disease, higher calcium, phosphorus and iPTH, while greater reduction of the serum calcium, phosphorus and iPTH in the short term after operation.     

濒危药用植物桃儿七中鬼臼毒素和总木脂素含量测定

目的:测定不同产地桃儿七中鬼臼毒素和总木脂素类成分含量,对其资源利用价值进行评价。方法:采用高效液相色谱法和紫外分光光度法分别测定不同产地共126个桃儿七样品中鬼臼毒素和总木脂素含量,采用参比波长法测定桃儿七中总木脂素类成分的含量。结果:桃儿七中鬼臼毒素和总木质素的含量均以产自甘肃省永登县自然保护区样地的样品含量最高,产自西藏自治区江达同普乡样地的样品含量最低,前者分别为7.40%,20.66%,后者分别为0.40%,5.46%,两者分别相差近19倍和4倍。桃儿七中鬼臼毒素与总木脂素的含量呈显著正相关,且两者的含量表现出海拔较低、纬度较高地区样地的含量较高的特点。结论:2种含量测定方法均简便、快速、准确、重复性好;以鬼臼毒素含量和总木脂素含量为指标评价桃儿七资源利用价值较为客观;本研究的结果,对于桃儿七野生资源采集和栽培生产基地建设的产地选择具有重要的指导意义。     

HPLC测定金莲花中金莲花碱的含量

目的:建立金莲花中金莲花碱的含量测定方法,并测定市售金莲花药材中金莲花碱的含量。方法:采用高效液相色谱法,Agilent C18 ODS色谱柱(4.6 mm×250 mm,5μm),流动相为乙腈-0.5%醋酸溶液(0～30 min,2∶98～100∶0),流速为1.0mL.min-1,检测波长为258 nm。结果:金莲花碱在0.138 0～1.241 0μg呈良好的线性关系,购自全国各地的9批金莲花药材中的金莲花碱为0.05%～0.11%。结论:本方法精密、准确、重现性好,可用于测定金莲花中金莲花碱的含量。     

凉血泻火消肿方联合西药治疗浅静脉炎临床研究

目的：观察凉血泻火消肿方联合西药治疗浅静脉炎及对血清炎症因子的影响。方法：采用奇偶数分组法将75例浅静脉炎患者分为对照组（37例）与观察组（38例）。对照组给予常规西药治疗,观察组在对照组基础上联合凉血泻火消肿方治疗。比较2组治疗前后中医证候积分、血液流变学指标及血清炎症因子水平,并评估2组临床疗效及不良反应发生情况。结果：观察组总有效率92.11%,高于对照组72.97%(P<0.05)。治疗后,2组中医证候积分、全血高切黏度、血浆黏度、红细胞聚集指数、纤维蛋白原及肿瘤坏死因子-α (TNF-α)均较治疗前降低（P<0.05）,白细胞介素-10 (IL-10)升高（P<0.05）,且观察组治疗后中医证候积分、血液流变学指标及TNF-α低于对照组（P<0.05）,IL-10高于对照组（P<0.05）。2组均未发生不良反应。结论：凉血泻火消肿方联合西药治疗浅静脉炎疗效确切,能够有效减轻患者炎症反应,改善血液流变学,安全性较高。     

Polymorphisms in XPC provide prognostic information in acute myeloid leukemia

Acute myeloid leukemia (AML) is the most common type of adult leukemia for which cytosine arabinoside-based chemotherapy is the main treatment. Single nucleotide polymorphisms within the nucleotide excision repair pathway may alter the susceptibility of leukemia cells to chemotherapy. We investigated the roles of six single nucleotide polymorphisms (ERCC5rs76871136, ERCC5rs77569659, ERCC5rs873601, XPCrs2228000, XPCrs2228001, and XPCrs1870134) in the nucleotide excision repair pathway in influencing the outcome of patients with AML treated with cytosine arabinoside-based chemotherapy. One hundred fifty-one patients with AML in a Chinese population were enrolled in this study. Genotypes were determined by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. We found that the distribution of three genotypes of XPCrs1870134 significantly differed in the cytogenetic risk groups (P?=?0.04). A statistically significant correlation between polymorphisms of XPCrs2228001 and gender was found among the gender groups (P?=?0.03). Moreover, patients carrying at least one variant allele (XPCrs2228001AA+CC) were more likely to respond better than those who did not carry a variant. However, no significant association was detected between polymorphisms in ERCC5 and treatment response. These findings suggest that XPC polymorphisms are important markers for the outcome of patients with AML in the Chinese population.