Hepatoprotective effects of Nigella sativa L and Urtica dioica L on lipid peroxidation, antioxidant enzyme systems and liver enzymes in carbon tetrachloride-treated rats

AIM： To investigate the effects of Nigella sativa 1 （NS） and Urtica dioica 1 （UD） on lipid peroxidation, antioxidant enzyme systems and liver enzymes in CCl4-treated rats. METHODS： Fifty-six healthy male Wistar albino rats were used in this study. The rats were randomly allotted into one of the four experimental groups： A （CCl4-only treated）, B （CCl4＋UD treated）, C （CCl4＋NS treated） and D （CCl4＋UD＋NS treated）, each containing 14 animals. All groups received CCl4 （0.8 mL/kg of body weight, sc, twice a week for 60 d）. In addition, B, C and D groups also received daily i.p. injections of 0.2 mL/kg NS or/and 2 mL/kg UD oils for 60 d. Group A, on the other hand, received only 2 mL/kg normal saline solution for 60 d. Blood samples for the biochemical analysis were taken by cardiac puncture from randomly chosen-seven rats in each treatment group at beginning and on the 60th d of the experiment. RESULTS： The CCl4 treatment for 60 d increased the lipid peroxidation and liver enzymes, and also decreased the antioxidant enzyme levels. NS or UD treatment （alone or combination） for 60 d decreased the elevated lipid peroxidation and liver enzyme levels and also increased the reduced antioxidant enzyme levels. The weight of rats decreased in group A, and increased in groups B, C and D. CONCLUSION： NS and UD decrease the lipid peroxidation and liver enzymes, and increase the antioxidant defense system activity in the CCl4-treated rats.

Protective effect of Nigella sativa L.to gastric mucous of indomethacin-induced gastric ulcer rats

OBJECTIVE To investigate the effect of Nigella sativa L.as gastric protective on indomethacin-induced rats.METHODS the design of this research is randomized post test control group design.The rats were randomly divided into 5 groups which 5 rats in each.Rats were fasted for 8h before treatment.The first group was a control group(only gave aquadest as vehicle orally).The second group was subjected to induced with indomethacin 30mg·kg-1.The rest groups were subjected to induced by indomethacin and methanolic extract of Nigella sativa L.200,300 and 400mg·kg-1 every 8h for 24 h,respectively,for third,fourth and fifth group.Rats were sacrificed after anesthetized with ketamine and gastric were washed before observed.Macroscopic observation based on a score of lesion and microscopic observation on gastric based by histological HE staining.Whole data were analysis of an ANOVA statistical program.RESULTS The administration of Nigella sativa L.significantly decreased gastric ulcer macroscopically starting at dose 100,200 and 300mg·kg-1(P<0.05).Microscopic observation showed significant decreasing at dose 200 and 300mg·kg-1(P<0.05).Interestingly,there was no significant different between control and dose 300mg·kg-1.Negative correlation between lesion and doses were-0.919,-0.953 for macroscopic and microscopic lesion respectively.It means there was strong correlation between dose and lesion,higher dose lesser lesion.The mechanism of gastric protective of NigellasativaL.may caused by the bioactive compound such as thymoquinone which known as antiinflammation and antioxidant.CONCLUSION Methanolic extract of Nigella sativa L.decreased peptic ulcer both macroscopic and microscopic conditions on indomethacin-induced rats.

黑种草籽挥发油化学成分的 GC-MS分析

采用毛细管气质联用法对黑种草籽挥发油化学成分进行了研究 ,共确认了其中 2 0种成分 ,占精油总含量的 94.2 % .其主要化学成分为异长叶烯 (Isolongifolene) ,桧萜 (Sabinene) ,百里醌 (Thymoquinone) ,4-甲基 -1 -(1 -异丙基 ) -3 -环已烯 -1 -醇 (3 -cyclohexen-1 -ol,4-methly-1 -(1 -methylethyl) -)等。

黑种草籽调节黑素合成的药效物质基础

以高效液相色谱(HPLC)法对黑种草籽不同体积分数的醇提取物进行色谱峰表征,以体外培养的小鼠B16黑素瘤细胞为模型,采用MTT法测定黑种草籽不同体积分数的醇提取物对B16黑素瘤细胞增殖的影响,采用L-DOPA氧化法测定黑种草籽不同体积分数的醇提取物对B16黑素瘤细胞酪氨酸活性的影响,采用NaOH裂解法测定黑种草籽不同体积分数的醇提取物对B16黑素瘤细胞黑色素含量的影响,并结合药理研究结果对不同体积分数醇提取物的HPLC图谱进行相关性统计分析.实验结果表明:黑种草籽体积分数为50%的乙醇提取物具有促进小鼠黑素瘤细胞B16增殖及促进黑素合成的作用;谱效分析HPLC图谱中的6个色谱峰对药效的贡献度无差异,表明黑种草籽药效是中药多组分协同作用.

回药少尼子的本草考证

《言行录》记载回药少尼子能够治疗许多疾病。因此本研究从品种考证、历史记载、产地、化学成分、药理作用、传统及现代医学用法、安全性等方面对《回回药方》中少尼子进行本草考证研究,确定其为毛茛科植物家黑种草Nigella sativa L.的干燥成熟种子,其治疗范围极其广泛,且安全无毒,具有很大的研究价值。