Measurements of hydrocortisone and cortisone for longitudinal profiling of equine plasma by liquid chromatography–tandem mass spectrometry

The conventional detection of exogenous drugs in equine doping samples has been used for confirmation and subsequent prosecution of participants responsible. In recent years, alternative methods using indirect detection have been investigated due to the expanding number of pharmaceutical agents available with the potential of misuse. The monitoring of endogenous biomarkers such as hydrocortisone (HC) has been studied in equine urine with an international threshold of 1 μg/ml established; however, there is no current threshold for equine plasma. The aim of this research was to investigate plasma concentrations of HC and cortisone (C) in race day samples compared to an administration of Triamcinolone Acetonide (TACA). The reference population (n = 1150) provided HC (6 to 145 ng/ml) and C (0.7 to 13 ng/ml) levels to derive the HC to C ratio (HC/C). Population reference limits (PRLs) were proposed for HC/C values at 0.2 (lower) and 61 (upper). Administration of TACA resulted in down-regulation of HC/C values below the estimated PRLs for up to 96 h post-administration. This indirect detection period was longer than the detection of TACA for 72 h. The use of individual reference limits (IRLs) for HC/C values was investigated to support the Equine Biological Passport (EBP), an intelligence model developed by Racing NSW for longitudinal monitoring of biomarkers.     

夏连颗粒(甲康)治疗亚急性甲状腺炎的临床研究

目的探讨纯中药制剂夏连颗粒(甲康)对亚急性甲状腺炎的临床疗效及停药后的复发率。方法对102例亚急性甲状腺炎随机分为三组;甲康治疗组(A 组),对照组分别为消炎痛、泼尼松(B 组)及甲康、消炎痛合用泼尼松(C组),观察其疗效、疗程及停药后的复发率。结果疗效;三组均全部治愈,无显著差异。疗程;A 组:4～6周(χ±SD:27.89±13.56天),B 组:4～6周(X±SD:31.71±14.32天),C 组:2～4周(18.79±9.72天)。A 组与 B 组比较无显著差异(P>0.05),但 C 组与 A、B 组比较有显著差异(P<0.05)。复发率:A 组3.22%(1/31),B 组21.21％(7/31),C 组2.63%(1/38)。A 组与 B 组比较有显著差异(P<0.05),A 组与 C 组比较无显著差异(P>0.05)。结论纯中药制剂夏连颗粒(甲康)对亚急性甲状腺炎治疗有效,特别是中西医药联合用药,疗效更佳,起效快、疗程短、复发率低。此项研究结果表明,夏连颗粒(甲康)可以应用于临床。     

糖皮质激素对内分泌器官的广泛影响

目的：探讨大剂量糖皮质激素（Glucocorticoid,GC)对多种内分泌器官的影响,为临床减轻GC的副作用提供一些依据。方法：以大量醋酸可的松对大鼠进行注射,取其垂体、肾上腺、甲状腺、睾丸进行电镜样品制备及观察。结果：大量醋酸可的松可引起大鼠垂体、肾上腺、甲状腺、睾丸细胞内质网扩张,线粒体肿胀、空泡化,核固缩,细胞萎缩,脂滴分布的改变等超微结构的损伤。结论：大剂量GC对内分泌系统具有广泛的影响。     

颅脑损伤病人血皮质醇水平与伤情轻重及预后的关系

目的探讨颅脑损伤后病人的血皮质醇水平变化和颅脑损伤轻重分级的相关性，并探讨其对颅脑损伤预后的影响。方法回顾性分析57例颅脑损伤病人外伤后测得的血皮质醇水平，按照CCS评分分成轻中型和重型颅脑损伤组，并对所有病人随访半年。结果重型组病人的血皮质醇水平比轻中型组病人明显升高（0．01〈P〈0．05）。随访结果表明，伤后急性期血皮质醇水平越高，病人的死亡率和伤残率越高（P〈0．01）。结论颅脑损伤病人血皮质醇水平与损伤轻重程度相关，与病人的预后相关．     

Stage of palate closure as one indication of “liability” to cleft palate

A new inbred mouse strain, SW/Fr, developed from a random-bred SW stock has a 6% incidence of spontaneous cleft palate without cleft lip. SW/Fr mice close their palates comparatively late in development. After cortisone treatment, the mean of the distribution (mean time to reach palate stage 5) is shifted towards later gestational ages. There is no change in the variance of the distribution. These data lend further support to the hypothesis that cleft palate in mice may fit a model where a continuous distribution is separated into discontinuous parts by a developmental threshold, and that time of palate closure is an important component of liability to cleft palate.     

高效液相梯度洗脱法测定血清中氢化可的松和可的松的含量

目的　测定血清中氢化可的松和可的松的比值以反映人体肝脏 1 1 β -羟类固醇脱氢酶的活性 ,为其研究提供一个有效的分析手段。方法　HPLC -UV法 ,梯度洗脱 ,内标定量。结果　血清中氢化可的松在 50～ 2 0 0μg·L-1 、可的松在 1 0～ 50 μg·L-1 范围内其线性回归方程分别为Y =- 0 .42 5 +0 .0 1 0X、Y =- 0 .1 63 +0 .0 50X ,相对回收率分别为 (1 0 2 .5± 3 .6) %、(97.6± 6 .0 ) %。 82名健康志愿者血中氢化可的松和可的松的浓度分别为 (1 32 .2± 44 .5) μg·L-1 和 (1 9.7± 5 .0 ) μg·L-1 ,其比值为 6 .89± 2 .2 6。结论　本法操作简便、灵敏可靠 ,符合人体血样糖皮质激素测定的要求     

大剂量激素治疗过敏性紫癜34例

目的　探讨大剂量激素对过敏性紫癜的疗效。方法　对 3 4例过敏性紫瘢患者 ,均给予大剂量激素序贯治疗 ,并随访观察 1～ 3年。结果　 3 4例均治愈 ,1例未遵嘱服用激素者短时复发后再次治愈 ,余 3 3例均无复发。结论　大剂量激素治疗过敏性紫癜疗效较好