中药配方精油——一种中药入药新形式的思考

饮片是中医临床用药的主体,随着中医用药现代化,中药配方颗粒逐步发展并初具规模。虽有中药注射剂、口服液等的加工形式,但只占中药市场的少部分,并以内服为主。而脂溶性成分口服时,溶出受限,吸收相对较少,且具有刺激胃肠道的副作用,造成患者耐受性低。虽有水提、醇提等加工制成的外用制剂,但多为粗制剂,且剂量随意,在一定程度上造成了脂溶性成分的浪费。而中药的脂溶性成分大多具有较好的生物活性,如五味子乙素、丹参酮、绿原酸甲酯等,但却没有合适的药用形式。若想"药"尽其用,就必须对中药的脂溶性成分进行系统研究,在提取、分离和收集工艺均相当成熟的基础上,研发以脂溶性成分为主的,药理药效确切的,又利于其吸收的药用形式。中药精油具有抗衰老、抗痴呆、抗氧化等多种活性,已广泛应用于临床、药妆、保健品等领域。但单方精油作用有限,配伍既可增强药效、降低毒性,也可扩大精油应用范围。因此,可将中药配方精油作为中药入药新形式,并以外用为主、内服为辅,以弥补中药外用多为粗制剂、剂量随意的不足和内服吸收少、刺激胃肠道的劣势,满足临床用药需求,更快、更准、更好、更强地发挥脂溶性成分的药效。     

Predicting cardiac autonomic neuropathy category for diabetic data with missing values

Cardiovascular autonomic neuropathy (CAN) is a serious and well known complication of diabetes. Previous articles circumvented the problem of missing values in CAN data by deleting all records and fields with missing values and applying classifiers trained on different sets of features that were complete. Most of them also added alternative features to compensate for the deleted ones. Here we introduce and investigate a new method for classifying CAN data with missing values. In contrast to all previous papers, our new method does not delete attributes with missing values, does not use classifiers, and does not add features. Instead it is based on regression and meta-regression combined with the Ewing formula for identifying the classes of CAN. This is the first article using the Ewing formula and regression to classify CAN. We carried out extensive experiments to determine the best combination of regression and meta-regression techniques for classifying CAN data with missing values. The best outcomes have been obtained by the additive regression meta-learner based on M5Rules and combined with the Ewing formula. It has achieved the best accuracy of 99.78% for two classes of CAN, and 98.98% for three classes of CAN. These outcomes are substantially better than previous results obtained in the literature by deleting all missing attributes and applying traditional classifiers to different sets of features without regression. Another advantage of our method is that it does not require practitioners to perform more tests collecting additional alternative features.     

Evaluation of clinical and financial outcomes of a new no‐sting barrier film and barrier cream in a large UK primary care organisation

The study involves 95 subjects within a UK Primary Care Organisation and was undertaken in two arms. The objective was to determine the clinical outcomes and clinical acceptability of a newly available range of no‐sting barrier film and no‐sting barrier cream products offering significant financial benefits. The importance of undertaking this study is underpinned by evidence in the literature relating to the use of no‐sting barrier preparations within clinical practice. The first part of the study (arm 1) involved extensive evaluation of either the film or cream barrier in 36 patients and was compared to existing standardised barrier protection care within the organisation. The results indicated that the new product range met all the criteria for formulary inclusion and following this the barrier range was further evaluated in arm 2, 33 patients with barrier cream and 26 patients with barrier film. The entire study was conducted over a 3‐month period with patient treatment lasting a minimum of 2 days to a maximum 4‐week period adhering to the agreed evaluation protocol as approved by clinical governance. In arm 1 (n = 36), the clinical expectation of the product was met in 32 cases relating to ease of use, conformability, no‐sting, quick drying, ease of absorption, compatibility with devices, frequency of application, prevention and management including visual skin improvement resulting in a recommendation for formulary listing in 31 of 36 cases. In arm 2 (n = 59), barrier film and barrier cream performance was consistently rated same as, better than or much better than the existing barrier used. A formulary listing recommendation was made in 51 of 59 cases.     

Mathematical formulae to estimate chronic subdural haematoma volume. Flawed assumption regarding ellipsoid morphology

Mathematical formulae are commonly used to estimate intra-cranial haematoma volume. Such formulae tacitly assume an ellipsoid geometrical morphology. Recently, the ‘XYZ/2’ formula has been validated and recommended for chronic subdural haematoma (CSDH) volumetric estimation. We aimed to assess the precision and accuracy of mathematical formulae specifically in estimating CSDH volume, and to determine typical CSDH 3-D morphology. Three extant formulae (‘XYZ/2’, ‘π/6·XYZ’ and ‘2/3S·h’) were compared against computer-assisted 3D volumetric analysis as Gold standard in CTs where CSDH sufficiently contrasted with brain. Scatter-plots (n = 45) indicated that, in contrast to prior reports, all formulae most commonly over-estimated CSDH volume against 3-D Gold standard (‘2/3S·h’: 44.4%, ‘XYZ/2’: 48.84% and ‘π/6·XYZ’: 55.6%). With all formulae, imprecision increased with increased CSDH volume: in particular, with clinically-relevant CSDH volumes (i.e. >50 ml). Deviations >10% of equivalence were observed in 60% of estimates for 2/3S·h, 77.8% for ‘XYZ/2’ and 84.4% for ‘π/6·XYZ’. The maximum error for ‘XYZ/2’ was 142.3% of a clinically-relevant volume. Three-D simulations revealed that only 4/45 (9%) CSDH remotely conformed to ellipsoid geometrical morphology. Most (41/45, 91%) demonstrated highly irregular morphology neither recognisable as ellipsoid, nor as any other regular/non-regular geometric solid. Conclusions: Mathematical formulae, including ‘XYZ/2’, most commonly proved inaccurate and imprecise when applied to CSDH. In contrast to prior studies, all most commonly over-estimated CSDH volume. Imprecision increased with CSDH volume, and was maximal with clinically-relevant CSDH volumes. Errors most commonly related to a flawed assumption regarding ellipsoid 3-D CSDH morphology. The validity of mean comparisons, or correlation analyses, used in prior studies is questioned.     

自拟疏肝清肺饮治疗成年女性轻中度痤疮的临床观察

目的 探讨自拟方疏肝清肺饮治疗成年女性轻、中度痤疮的临床效果.方法 选取首都医科大学良乡教学医院皮肤科门诊年龄25～ 45岁的女性轻、中度痤疮患者86例,按患者单双日就诊次序随机分为2组单日就诊为对照组,双日就诊为观察组.对照组40例口服红霉素肠溶胶囊0.5g/次,2次/d;同时外用0.025％的维A酸乳膏,1次/晚.观察组46例口服自拟疏肝清肺饮,每日1剂,分2次服用;同时也外用0.025％的维A酸乳膏,1次/晚.疗程6周,每周随访1次.疗程结束后分别比较2组患者的治疗效果.结果 对照组患者有效率为75.0％ （30/40）;观察组患者有效率为87.0％ （40/46）,2组的有效率比较差异无统计学意义（P＞0.05）.结论 自拟方疏肝清肺饮配合外用维A酸乳膏治疗成年女性轻、中度痤疮与红霉素肠溶胶囊加维A酸乳膏具有相近的疗效,为临床治疗这类痤疮患者提供了新的选择.     

芪人抗皱霜祛皱作用的临床研究

目的：探讨芪人抗皱霜祛除皮肤皱纹的临床疗效。方法：将90例符合纳入标准的受试对象随机分为试验组和对照组。试验组使用芪人抗皱霜,对照组使用普通祛皱霜,分别于皮肤皱纹测试部位外涂,每日早晚各涂一次,使用周期为40天。试验前后均拍照进行皮肤皱纹等级及积分评价,同时用硅橡胶复制皮肤皱纹模型,应用图象分析软件对其进行分析处理。结果：临床观察结果表明,芪人抗皱霜能够降低受试对象的皱纹积分,降低皮肤皱纹深度及皮肤皱纹粗糙度,并优于对照组（P〈0.01）。结论：芪人抗皱霜有较好的祛皱美容作用,未发现任何不良反应,不失为一种安全有效的美容产品。     

Xiao-Chai-Hu Tang in Treating Model Mice With D-Galactosamine-Induced Liver Injury

This study explored the effects of a classical Chinese medicine formula- Xiao-Chai-Hu Tang(XCHT) on the model mice with D-galactosamine -induced liver injury. Sixty male imprinting control region (ICR) mice were used in the present study, and they were separated randomly into 6 groups: a normal control group (Group A, n=10), a model control (Group B, n=10), a positive control (Group C, n=10), a low dose of XCHT group (Group D, n=10), a medium dose of XCHT group (Group E, n=10), and a high dose of XCHT group (Group F, n=10). ELISA was used to detect the IL-6 and TNF-α levels in the serum. Real-time PCR was performed to assess the expression of FasmRNA, Fas-LmRNA, Bcl-2mRNA of the liver tissues. Western blotting was used to detect the Bax protein expression of the liver tissues. The serum IL-6 and TNF-α levels of Group B were significantly higher than the other groups (P<0.05). The expression of Fas mRNA, Fas-LmRNA, and Bax protein of the liver tissues of Group B were significantly higher than those of the other groups (P<0.05). The expression of Bcl-2 mRNA of the liver tissues of Group B was significantly lower than other groups (P<0.05). Both of XCHT and biphenyl dicarboxylate significantly decreased the serum IL-6 and TNF-α levels and FasmRNA, FasLmRNA, Bax protein expression and increased the Bcl-2 mRNA expression of the liver tissues of model mice (P<0.05). It may be through decreasing the serum IL-6 and TNF-α levels and FasmRNA, FasLmRNA, Bax protein expression and increasing the Bcl-2 mRNA expression of the liver tissues that XCHT significantly relieved the D-galactosamine -induced liver injury.