Clinical observation on the effect of Chinese medicine-“TCM formula” intervention on recurrence and metastasis of triple negative breast cancer

ObjectiveThis study used a prospective cohort study to observe the effect of triple-negative breast cancer on the 2-year disease-free survival rate with or without “TCM formula”.MethodsFrom November 1 st, 2016, the first patient was enrolled in the cohort study. A total of 356 patients were enrolled on January 30, 2019. Among them, 154 cases were followed up for 2 years. During the follow-up, there were 6 cases of shedding, so 6 cases were affected. A total of 148 cases were included in the analysis, including 73 in the exposed group and 75 in the non-exposed group. The exposed group was given “TCM formula” on the basis of standardized treatment, and the non-exposed group was treated with simple triple-negative breast cancer. The two groups visited each of the three months. The interview included safety examination (hematology and imaging). The endpoint was the difference in 2-year invasive disease-free survival between the exposed and non-exposed groups and the safety of the “TCM formula”.ResultsThere were 6 cases of shedding during the experiment and the shedding rate was 3.9 %. The 2-year rate of invasive disease-free survival in the exposed team was 88.7 % and the non-exposed group was 82.5 %. Logistic multivariate regression analysis predicted that “TCM formula” could reduce the disease-related recurrence and metastasis rate by 11 % (OR = 0.89, 95 % CI 0.37−0.956, P＜0.05). Through K–M survival analysis, TNBC patients with age ≤35 years and regional lymph node stage N1 may be the benefit group of “TCM formula”(P＜0.05). During the study, the incidence of total adverse events was 8.2 % in the exposed group, mainly manifested as stomach discomfort, diarrhea, and hepatocyte damage.Conclusion1. In the exposed group, the two-year rate of invasive disease-free survival increased by 6.2 % compared with the non-exposed group(P＞0.05). 2. According to K–M survival analysis, TNBC patients with age ≤35 years and regional lymph node metastasis to N1 may be potential beneficiaries of “TCM formula”. 3. “TCM Formula” is safe and tolerable to most patients.     

中药复方配伍的研究方法及其进展

中药复方是由2味或2味以上中药遵循中医理论组合而成的方剂。多味中药在合适的剂量配比之下,协同发挥作用,实现中医的整体调节治疗。研究中药复方的配伍对推动中药现代化发展、新药开发以及临床应用有着重要意义。近年来,研究者们在传统的"七情和合"与"君臣佐使"的基础上,运用新技术和新方法对中药复方的成分、药效活性和药代动力学性质等进行了研究,从不同角度探讨了中药复方配伍的科学内涵。同时,多种数理方法和模型的建立、网络药理学和数据挖掘方法的发展与应用,也对中药复方配伍研究提供了很大帮助。研究方法的发展虽促进了中药复方配伍的科学研究,但还需进一步建立适合中药复方配伍复杂关系的研究方法,以阐明中药复方及其成分/组分配伍的内在规律,进而构建新的现代中药复方,这也是目前中药复方配伍研究的重点任务。     

缓解视疲劳功能中药复方保健产品配方规律及特点分析

目的通过检索特殊食品信息查询平台公布的具有缓解视疲劳功能的保健食品信息资料,以及药智数据网的中成药处方数据库中眼科中成药中有保健功能的产品信息资料,为具有缓解视疲劳功能的保健产品的组方与产品开发提供依据与参考。方法运用Microsoft Excel2016软件及中医传承辅助平台对检得的产品信息进行统计,分析其配方特点。结果共收集到141个具有缓解视疲劳功能的保健食品,其中64个(45.4%)保健食品配方中含有中药类原料。使用频次≥5的中药原料有6味,累计使用145次(72%),由高到低分别是菊花、枸杞子、决明子、桑椹、熟地黄、茯苓。通过无监督的熵层次聚类得到3个新处方。非中药原料在缓解视疲劳功能的保健食品中应用较为普遍,含有外来天然植物资源的60个产品,含叶黄素及维生素类的17个。统计眼科中成药中有保健功能的产品可知,使用频次≥4的中药原料有7味,累计使用32次(29%),由高到低分别是枸杞子、决明子、菟丝子、熟地黄、菊花、五味子、车前子。通过无监督的熵层次聚类得到1个新处方。结论保健食品在中药原料的选择上与中医药理论治疗视疲劳的原则基本契合,即滋补肝肾、平肝明目。但二者在中药原料选择范围、原料配伍、剂型种类等方面有所不同。此外,还在辨证保健理论指导下,尝试探讨应用文献数据处理统计方法筛选新配方、开发新产品,为中药复方保健产品的研发开辟了新思路、新方法。     

柴苓小方对大鼠肾小球系膜细胞异常增殖的影响

目的：探讨柴苓小方对大鼠肾小球系膜细胞（GMCs）异常增殖的影响及相关机制。方法：采用脂多糖刺激系膜细胞异常增殖。MTT法检测柴苓小方对㈣异常增殖的影响；免疫细胞化学方法检测药物作用后增殖细胞核抗原（PCNA）的表达；乳酸脱氢酶释放实验检测柴苓小方的细胞毒作用。采用RT—PCR检测药物作用不同时间点细胞周期蛋白依赖性激酶抑制剂p21的表达。结果：柴苓小方可以剂量依赖性的抑制系膜细胞异常增殖并显著减少PCNA阳性细胞数而没有明显的细胞毒作用。并且柴苓小方可以显著地上调p21基因的表达（P〈0．05）。结论：柴苓小方可剂量依赖性的抑制GMC8异常增殖．其机制可能与上调p21mRNA表达有关。     

血压在前阻力血管中下降最快的原因分析

目的：解释血压在毛细血管前阻力血管中下降最快的原因。方法：利用物理模型简化复杂的心血管系统。结果：全身所有的微、小动脉段“并联”，全身所有的毛细血管段“并联”。结论：微、小动脉段的总流阻最大、使俐血压在微、小动脉中下降最快。     

Capillary gas chromatographic assay of camphor and m-cresol in dermatological creams

Camphor and m-cresol mixtures are used in antiseptic and anti-itching creams. No compendial method exists for these preparations. This paper reports a capillary gas chromatographic method using FID detection with 2,6-di-tert-butyl-4-methylphenol as internal standard on a 30 m×0.32 mm Supelcowax®-10 column (0.25 μm film) with helium as carrier gas. Ramped temperature programming was applied. The method allows simultaneous quantitation of camphor and m-cresol in the presence of o- and p-cresols, calamine and zinc oxide. Overall percent recoveries (±SD, n=9) of camphor, o-, p- and m-cresol from spiked placebo creams, at a labeled amount of 10 (w/w)% were 96.9±0.6, 98.2±0.6, 99.2±0.5 and 101.0±0.9%, respectively, and at a labeled amount of 1% were 96.7±0.6, 97.8±0.9, 97.8±0.6, and 100.3±1.0%, respectively. The recovery studies were carried out at ±30% of the labeled amounts. Linear peak area or height ratios were obtained (r>0.999) for camphor, o-, p- and m-cresol covering a concentration range of 10–200% of the labeled amount. Linearity (r>0.999) was also obtained for m-cresol when the relative concentration of o- and p-cresol was varied from 5 to 100% of the m-cresol concentration. The resolution between the ‘critical pair’ of p- and m-cresol was ≥1.1. The limit of quantitation was 23 pg for m-cresol and 9.3 pg for camphor using an injection split of 1:50. The repeatability (%RSD) for all compounds were <2% for peak area and <1.4% for peak height ratios. System suitability and robustness of the method were established. The method was successively applied to the assay of available commercial products and allows assay of camphor and the three cresol isomers.     

Midwives in the UK: an exploratory study of providing newborn feeding support for postpartum mothers in the hospital

Our objective was to explore English midwives' views and experiences of supporting mothers with feeding their newborn baby. Grounded theory methodology was used. Data were collected using in-depth interviews from 30 midwives in the North of England. Data were analyzed using constant comparison techniques. Midwives were theoretically sampled for interview from a pool of volunteers recruited from a poster promoting the study in the clinical areas. Overall, hospital midwives felt that they did not have enough time to support mothers with feeding their neonate. To cope with these time constraints, midwives developed practices of rationing the time that they spent with mothers, and the rationing of resources available to mothers, to help them process mothers through the hospital services. These practices have important implications for the success of breastfeeding in hospitals as the practices by providers who are assigned to help breastfeeding initiation described here may inhibit the breastfeeding process.     

血清低密度脂蛋白胆固醇直接测定与Friedewald公式计算结果比较

采用聚乙烯硫酸（ＰＶＳ）沉淀法测定血清低密度脂蛋白胆固醇（ＬＤＬ－Ｃ）值，同时应用Ｆｒｉｅｄｅｗａｌｄ公式计算ＬＤＬ－Ｃ含量，并对两法结果进行比较分析，提出当甘油三脂（ＴＧ）＜４．５２ｍｍｏｌ／Ｌ时，Ｆ公式计算法可代替ＰＶＳ法，当ＴＧ＞４．５２ｍｍｏｌ／Ｌ时，不宜用Ｆ公式计算ＬＤＬ－Ｃ的值。     

双波长薄层扫描法测定氢醌酯霜中氢醌酯的含量

本文建立了氢醌酯的薄层扫描测定方法。以甲苯:乙醚(4:1)为展开剂,氢氧化钠的醇溶液浸渍显色,λ_R=620nm,λ_?=375nm,对氢醌酯的含量进行了双波长薄层扫描法测定,结果回收率99.5%,CV=1.2%,表明该法简单,可行。