平贝母水提物抗炎作用研究

[目的]观察平贝母水提物的抗炎作用.[方法]通过二甲苯致小鼠耳肿胀实验、蛋清致大鼠足趾肿胀实验及对小鼠毛细血管通透性的影响观察平贝母水提物的抗炎作用.[结果]平贝母水提物能减轻二甲苯所致的小鼠耳廓肿胀;能减轻蛋清所致大鼠足趾肿胀;降低小鼠毛细血管通透性.[结论]平贝母水提物具有抗炎作用.     

从平贝母茎叶中分离的平贝啶甙的结构

本文报道自平贝母(Fritillaria ussuriensis Maxim)的地上茎叶中分得一种新的甾体生物碱甙,定名为平贝啶甙(pingbeidinoside),mp 242～243.2℃[a]_D²⁵+6.9°(c 0.145,MeOH)。经IR,MS,¹HNMR和¹³CNMR谱解析,推定其结构为3β,16α,20-三羟基-Δ⁵-22,26-缩亚胺胆甾烷-25-O-α-D-葡萄糖甙。     

川贝母止嗽颗粒对小鼠耳廓肿胀抑制作用的研究

目的研究川贝母止嗽颗粒对小鼠耳廓肿胀的抑制作用。方法通过二甲苯致小鼠耳廓肿胀急性炎症动物模型,评价川贝母止嗽颗粒的抗炎效果。结果与空白对照组比较,川贝母止嗽颗粒高、中、低剂量组均能够显著抑制二甲苯致小鼠耳廓肿胀（P〈O．01或P〈O．05）。结论川贝母止嗽颗粒具有一定的对抗小鼠耳廓急性炎症作用。     

HPLC法测定平贝母中腺苷的含量

目的：建立HPLC法测定平贝母中腺苷含量。方法：色谱柱：Inertsil ODS—SP（250mm×4．6mm,5μm）;流动相：水-乙腈（93：7）;流速：1．0ml·min^-1;柱温：室温;检测波长：260nm。结果：腺苷在0．04～0．24μg与峰面积线性关系良好（r=0．9999）,平均加样回收率为96．32％,RSD=1．15％（n=5）。结论：本方法简便、准确、重复性好,可用于平贝母的质量控制。     

HPLC-ELSD法同时测定平贝母中贝母素甲、贝母素乙的含量

目的：建立HPLC—ELSD法同时测定平贝母中贝母素甲、贝母素乙含量的方法,并对市售样品进行考察,制定含量限度。方法：色谱柱：Waters C18色谱柱（150mm×4．6mm,5μm）,流动相：乙睛-二乙胺-水（70：0．03：30）,流速：1．0ml·min^-1,ELSD参数：漂移管温度90℃,载气流速为2．2L·min^-1。结果：贝母素甲、贝母素乙分别在0．06～0．35μg和0．08—0．50μg范围内线性关系良好。平均回收率（n=6）分别为98．4％,98．9％,RSD分别为1．8％,1．9％。结论：此法简便,快捷,结果可靠,可用于平贝母药材的质量评价,为今后其质量标准的修订提供了依据。     

Olfactory bulb volume and olfactory function after radiotherapy in patients with nasopharyngeal cancer

Objective

Radiotherapy is the primary method of treatment for nasopharyngeal cancer (NPC) and many side effects were reported in patients receiving radiation to this area. This study was conducted to evaluate the long-term effects of radiotherapy following NPC on olfactory bulb (OB) volume and olfactory function.

Methods

Twenty-four patients with NPC who received radiotherapy at least 12 months ago were recruited. Fourteen healthy subjects with similar demographical characteristics were recruited as the healthy control group. All volunteers were subjected to a nasoendoscopical examination, and abnormalities that could potentially cause olfactory dysfunction were the exclusion criteria from the study. An experienced radiologist segmented the MRI coronal, axial and sagittal slices manually for three-dimensional OB volume measurement in a blinded manner. Olfactory function was assessed using the Connecticut Chemosensory Clinical Research Center (CCCRC) test, and average score (0: worst, 7: best) was calculated as the total CCCRC olfactory score.

Results

The mean CCCRC score was 5.5 ± 1.1 for the nasopharyngeal cancer patients, whereas the mean score of healthy control group was 6.4 ± 0.4. There was a significant difference in the olfactory scores (p = 0.003). The mean OB volume in the NPC group was 46.7 ± 12.1 mm³. Among the patients with NPC, the cisplatin receiving group had a mean OB volume of 47.2 mm³, whereas the cisplatin + docetaxel receiving group had a mean OB volume of 46.5 mm³, and they were similar. The MRI measurement of the healthy control group was 58.6 ± 13.8 mm³. The OB volumes of the healthy control group were significantly higher (p < 0.05).

Conclusion

Radiotherapy following nasopharyngeal cancer results in a diminished OB volume and deteriorated olfactory function. Chemosensory olfactory dysfunction might be a contributing factor to lack of appetite, cancer cachexia and consequent lowered quality of life in NPC patients.     

新疆伊贝母有效成分含量与土壤、气候和遗传因子相关性分析

目的 通过对新疆伊贝母有效成分含量与土壤、气候和遗传因子相关性研究,筛选影响其质量的主导因子,为保证伊贝母药材质量及其临床用药的有效性,提高伊贝母的合理利用提供理论依据,为揭示伊贝母适宜生长机制奠定科学基础。方法 应用系统相关分析法、灰色关联度分析和逐步回归分析进行综合分析。结果 对主成分分析、相关分析、灰色关联度分析和逐步回归分析的结果进行综合考虑,年均相对湿度和速效钾对伊贝母总生物碱含量的影响最大,多态性位点(P)、多态性位点百分率(PPB)和速效氮对伊贝母水溶性成分含量的影响最大。结论 综合分析伊贝母有效成分与土壤、气候和遗传因子主导因子的相关性表明,在众多影响因子中,多态性位点(P)、多态性位点百分率(PPB) 、年均相对湿度、速效钾和速效氮是影响伊贝母质量的主导因子,对伊贝母有效成分含量的积累具有重要意义。     

平贝碱乙的分离和鉴定

本文报道了自东北平贝母(Fritillaria ussuriensis Maxim)中分得一种新的甾体生物碱,经光谱(IR,MS,¹HNMR及¹³CNMR)解析和衍生物制备,推定其结构为5α,17β,22α-cevanine-3 β,6α,12α,14α,16β,20β-hexol,定名为平贝碱乙。     

蒙药材酸梨质量标准研究

目的:建立蒙药材酸梨的质量标准。方法:对药材的性状、显微特征、薄层色谱(TLC)、水分、总灰分、重金属含量等指标进行研究。结果:酸梨的性状、显微特征、TLC特征性强,可作为该药材定性鉴别的依据。不同产地药材的水分、总灰分、重金属含量等无显著性差异(P>0.05)。结论:所建标准可用于酸梨的质量控制。     

贝母药材在中药和保健食品中使用的安全性探讨

贝母属(Fritillaria)植物属百合科(Liliaceae),包括暗紫贝母(F.unibracteata Hsiao et K.C.Hsia)、浙贝母(F.thunbergii Miq.)等13种国内外固有品种,以及约50余新种、40余新变种及变型。[1]中药用贝母为百合科贝母属多种植物的的干燥鳞茎,根据产地、药效的不同,贝母药材大致分成以下几大类:浙贝母、伊贝母、川贝母、湖北贝母、平贝母等。[2]贝母具有清热润肺、止咳化痰的良好功效,广泛运用于多种复方中成药中,如蛇胆川贝口服液及其他多种保健品。经过对于相关文献的研究与比较,笔者发现贝母属植物中的主要成分之一的贝母辛(peimisine)可…