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排序方式: 共有140条查询结果,搜索用时 15 毫秒
1.
Shahrzad Zamani Taghizadeh Rabe Maryam Sahebari Zohreh Mahmoudi Hossein Hosseinzadeh Dariush Haghmorad Nafise Tabasi 《Food and Agricultural Immunology》2015,26(2):170-180
Saffron is a well-known spice produced from dried stigmas of Crocus sativus L. flowers. Apart from its wide use in food preparations, it also has a broad range of medical properties. We examined the potential anti-inflammatory effects of saffron ethanolic extract (SEE) using an animal model of arthritis. Adjuvant-induced arthritis was induced in Wistar rats by injection of Complete Freund's Adjuvant. The rats were then injected intraperitoneally every other day with 25–600 mg SEE/kg or dexamethasone (DEX, 2 mg/kg). Changes in body weight, paw oedema and arthritis indices were recorded over the subsequent 12 days of treatment. Results revealed that SEE particularly at the higher concentrations significantly reduced paw and tibiotarsal joint diameters and comparing with DEX caused no significant change in body weight. These observations suggest that SEE displays a considerable anti-inflammatory potency and could potentially be used as an anti-arthritic agent in control of inflammation in rheumatoid arthritis. 相似文献
2.
目的比较西红花Crocus sativus水提物与红花Carthamus tinctorius水提物及其主要活性成分的抗血栓作用。方法 SD大鼠随机分为对照组、模型组、西红花酸(50 mg/kg)组、羟基红花黄色素A(50 mg/kg)组、西红花水提物(200 mg/kg)组、红花水提物(700 mg/kg)组和阿司匹林(50 mg/kg)组,大鼠sc肾上腺素建立急性血瘀模型。造模前给予药物干预7 d,观察各组大鼠凝血时间、凝血酶原片段1+2(prothrombin fragment 1+2,F1+2)、凝血酶抗凝血酶复合物(thrombin-antithrombin complex,TAT)、蛋白S(protein S,PS)、血流变相关指标、血生化相关指标、纤溶系统相关指标以及右颈动脉病理的变化情况。结果与模型组比较,各给药组凝血时间显著升高(P0.05),血清中F1+2和PS水平显著降低(P0.05、0.01);除红花水提物组,其余各给药组血清中TAT水平显著降低(P0.05);西红花酸组和羟基红花黄色素A组150 s~(-1)切边率的全血黏度和红细胞压积显著降低(P0.05);西红花酸组、羟基红花黄色素A组和西红花水提物组60 s~(-1)切边率的全血黏度显著降低(P0.05、0.01);西红花酸组、羟基红花黄色素A组和红花水提物组10 s~(-1)切边率的全血黏度显著降低(P0.05、0.01);各给药组红细胞聚集指数显著降低(P0.05);各给药组大鼠血清中三酰甘油(triglycerides,TG)、总胆固醇(total cholesterol,TC)和高密度脂蛋白胆固醇(high density lipoprotein cholesterol,HDL-C)水平显著降低(P0.05);西红花酸组和羟基红花黄色素A组血清中天冬氨酸转氨酶(aspartate aminotransferase,AST)活性显著降低(P0.05),西红花酸组、西红花水提物组和红花水提物组血清中丙氨酸转氨酶(alanine aminotransferase,ALT)活性显著降低(P0.05);各给药组血清中纤溶酶激活物抑制物(plasminogen activator inhibitor,PAI)和D-二聚体(D-dimer)水平显著降低(P0.05、0.01),西红花酸组和西红花水提物组血清中6-酮-前列腺素F1a(6-keto-PGF1a)水平显著升高(P0.05);各给药组大鼠血管内皮脱落减少。结论西红花酸的抗血栓作用优于羟基红花黄色素A,西红花水提物的抗血栓作用优于红花水提物。 相似文献
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目的 建立一种基于特异性聚合酶链式反应(PCR)及荧光染料检测快速鉴别西红花真伪品的方法。方法 通过对叶绿体基因片段测序和比对分析,找出西红花与其常见掺伪品序列差异,针对差异碱基设计特异性引物,构建并优化聚合酶链式反应扩增反应体系,使用荧光染料法检测聚合酶链式反应产物,实现西红花的快速鉴别。结果 建立了基于psbA-trnH序列的西红花鉴别体系,优化后的聚合酶链式反应反应条件为90 ℃预变性1 min,90 ℃变性5 s,58 ℃延伸5 s,26个循环。在聚合酶链式反应反应产物中加入染料SYBR Green I,西红花正品出现强烈绿色荧光,而伪品无荧光。结论 位点特异性聚合酶链式反应方法可以简单快速鉴别西红花及其掺伪品。 相似文献
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Safranal of Crocus sativus L. Inhibits Inducible Nitric Oxide Synthase and Attenuates Asthma in a Mouse Model of Asthma 下载免费PDF全文
The present study involves evaluation of antioxidant potential of Crocus sativus and its main constituents, safranal (SFN) and crocin (CRO), in bronchial epithelial cells, followed antiinflammatory potential of the active constituent safranal, in a murine model of asthma. To investigate the antioxidizing potential of Crocus sativus and its main constituents in bronchial epithelial cells, the stress was induced in these cells by a combination of different cytokines that resulted in an increase in nitric oxide production (NO), induced nitric oxide synthase (iNOS) levels, peroxynitrite ion generation, and cytochrome c release. Treatment with saffron and its constituents safranal and crocin resulted in a decrease of NO, iNOS levels, peroxynitrite ion generation, and prevented cytochrome c release. However, safranal significantly reduced oxidative stress in bronchial epithelial cells via iNOS reduction besides preventing apoptosis in these cells. In the murine model of asthma study, antiinflammatory role of safranal was characterized by increased airway hyper‐responsiveness, airway cellular infiltration, and epithelial cell injury. Safranal pretreatment to these allergically inflamed mice lead to a significant decrease in airway hyper‐responsiveness and airway cellular infiltration to the lungs. It also reduced iNOS production, bronchial epithelial cell apoptosis, and Th2 type cytokine production in the lungs. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
8.
Hossein Hosseinzadeh Soghra Mehri Ali Heshmati Mohammad Ramezani Amirhossein Sahebkar Khalil Abnous 《Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences》2014,22(1):5
Background
Traditional drug discovery approaches are mainly relied on the observed phenotypic changes following administration of a plant extract, drug candidate or natural product. Recently, target-based approaches are becoming more popular. The present study aimed to identify the cellular targets of crocin, the bioactive dietary carotenoid present in saffron, using an affinity-based method.Methods
Heart, kidney and brain tissues of BALB/c mice were homogenized and extracted for the experiments. Target deconvolution was carried out by first passing cell lysate through an affinity column prepared by covalently attaching crocin to agarose beads. Isolated proteins were separated on a 2D gel, trypsinized in situ and identified by MALDI-TOF/TOF mass spectrometry. MASCOT search engine was used to analyze Mass Data.Results
Part of proteome that physically interacts with crocin was found to consist of beta-actin-like protein 2, cytochrome b-c1 complex subunit 1, ATP synthase subunit beta, tubulin beta-3 chain, tubulin beta-6 chain, 14-3-3 protein beta/alpha, V-type proton ATPase catalytic subunitA, 60 kDa heat shock protein, creatine kinase b-type, peroxiredoxin-2, cytochrome b-c1 complex subunit 2, acetyl-coA acetyltransferase, cytochrome c1, proteasome subunit alpha type-6 and proteasome subunit alpha type-4.Conclusion
The present findings revealed that crocin physically binds to a wide range of cellular proteins such as structural proteins, membrane transporters, and enzymes involved in ATP and redox homeostasis and signal transduction. 相似文献9.
Efficacy of Crocus sativus L. on reduction of cadmium‐induced toxicity on spermatogenesis in adult rats 下载免费PDF全文
A. Yari A. Sarveazad E. Asadi J. Raouf Sarshoori A. Babahajian N. Amini F. Amidi H. Bahadoran MT. Joghataei MH. Asadi A. Shams 《Andrologia》2016,48(10):1244-1252
Cadmium is a toxic heavy metal element, which probably cause infertility by impairment in spermatogenesis. The present work aimed (i) to study the toxic effect of cadmium on spermatogenesis in rat, as well as (ii) the protective effect of Crocus sativus L. on cadmium‐intoxicated rats. Cadmium chloride was administered intraperitoneally during 16 days at intervals of 48 h between subsequent treatments. Crocus sativus L. was pre‐treated in both of control and cadmium‐injected rats. Animals were sacrificed on day 17 after the first treatment. The left cauda epididymis was removed and immediately immersed into Hank's balanced salt solution for the evaluation of sperm count and viability, and left testis was fixed in 10% formalin for histological evaluation. Following contamination with cadmium, a decrease was observed in the number and viability of cauda epididymis sperm, which were increased by Crocus sativus L. pre‐treatment (P < 0.05). In addition, cadmium decreased both cell proliferation and Johnsen Scores in the seminiferous tubules, which were reversed by Crocus sativus pre‐treatment (P < 0.05). Furthermore, cadmium‐induced decrease in the amount of free serum testosterone as well as an increase in lipid peroxidation activity in the testicular tissue was reversed by Crocus sativus L. (P < 0.05). These findings may support the concept that Crocus sativus L. can improve the cadmium toxicity on spermatogenesis. 相似文献
10.
Hossein Ayatollahi Atefeh Ordoei Javan Mohammad Khajedaluee Masood Shahroodian Hossein Hosseinzadeh 《Phytotherapy research : PTR》2014,28(4):539-543
Saffron showed some effects on blood coagulation and platelet aggregation in in vitro and in vivo studies. In a clinical trial with a limited number volunteers, saffron tablets influenced on bleeding time. In this study, the effect of saffron on plasma level of fibrinogen, factor VII (as coagulant agent), C and S protein (as anti‐coagulant agent), PT and PTT in a larger sample size was evaluated. The study was a double‐blind, placebo‐controlled study consisting of 1 week treatment with 200 mg and 400 mg saffron tablets. Sixty healthy volunteers (age range 20–50 years) were selected for the study. The volunteers were divided into three groups of 20 each. Group 1 received placebo; Groups 2 and 3 received 200 mg and 400 mg saffron tablets, respectively, for 7 days (1 tablet per day). Before and after 7 days treatment and also 1 month after that, blood samples were taken. The plasma levels of fibrinogen, factor VII, C and S protein, PT and PTT were evaluated. Statistical analysis showed no difference between groups for any of evaluated factors. This study rejected any effect of saffron with dose of 200 and 400 mg for 1 week on coagulant and anticoagulant system. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献