首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.

Ethnopharmacological relevance

Canthium henriquesianum (K. Schum) is traditionally used in Burkina Faso for the treatment of malaria, but has not been properly investigated, yet. The aim of this study was to characterize in vitro the antiplasmodial and the anti-inflammatory activity of extracts from Canthium henriquesianum (K. Schum). In parallel, extracts of Gardenia sokotensis (Hutch) and Vernonia colorata (Willd), also traditionally used together in Burkina Faso and already reported with antimalarial activity, were compared.

Materials and methods

Plant extracts were tested in vitro for antimalarial activity against chloroquine susceptible (D10) and resistant (W2) strains of Plasmodium falciparum using the lactate dehydrogenase assay. Cell cytotoxicity was assessed on human dermal fibroblast (HDF) by the MTT assay. The selectivity index (SI) was used as the ratio of the activity against the parasites compared to the toxicity of the plant extract against HDF. In vitro cytokine production was assessed by ELISA technique.

Results

Canthium henriquesianum aqueous extract had a moderate antimalarial activity (IC50<50 µg/ml) with a good selectivity index (SI=HDF/D10>7). Canthium henriquesianum diisopropyl ether extract was the most potent inhibitor of parasite growth with an IC50 9.5 µg/ml on W2 and 8.8 µg/ml on D10 and limited toxicity (SI>2). Gardenia sokotensis and Vernonia colorata aqueous extracts were shown to be significantly less active (IC50≥50 µg/ml) with substantial toxicity. In addition, when the production of IL-1β and TNFα by lipopolysaccharide (LPS) or hemozoin (malaria pigment) stimulated human THP-1 monocytes was assayed, it was found that the extract of Canthium henriquesianum induced a dose-dependent inhibition of IL-1β, but not of TNFα production, thus confirming its traditional use as antipyretic. By NMR analysis, the chromone was identified as the mostly represented compound in the diisopropyl ether extract of Canthium henriquesianum. Chromone however, was less active as antimalarial than the crude extract and it did not inhibit cytokine production at not toxic doses, indicating that other molecules in the total extracts contribute to the antiplasmodial and anti-inflammatory activity.

Conclusion

Canthium henriquesianum seems to possess antimalarial activity in vitro and the ability to inhibit the production of the pyrogenic cytokine IL-1β.  相似文献   

2.

Aim of the study

In the present investigation, ethnobotanical and ethnopharmacological research of the traditional use of plants to cure antirheumatic and antineuralgic diseases was carried out in Lebanon.

Materials and methods

The information was collected from different cities and villages of the twenty-six districts “aqdya or qadaa” of the six governorates “mohaafazah” of Lebanon. The knowledge on the medicinal use of plants has been recorded directly on the basis of a detailed survey on herbalists “Attarin or dabbous”, folk healers, on older experienced people and midwives “daye”. This research was carried out for 5 years (2002–2007).

Results and conclusions

In this survey, 231 species of which 5 are endemic, distributed in 79 botanical families, currently used as antirheumatic herbal remedies, were collected and identified. Among them 53.3% are indigenous, 19.2% are cultivated and 17.5% are imported. Their latin names, local names, local medicinal uses, the used parts of the plant and the preparations and the ways of administration are described. The anti-inflammatory properties due to the plant compounds have been demonstrated and discussed.  相似文献   

3.

Aim of the study

Although traditional herbal medicines are widely used in Ethiopia, no information is available on their potential genotoxicity. In the present study, hydroalcoholic extracts of Glinus lotoides, Plumbago zeylanica, Rumex steudelii and Thymus schimperi were evaluated for their DNA damaging effects using the comet assay.

Material and methods

Mouse lymphoma L5178Y cells were exposed to different concentrations of the extracts for 3 h with and without metabolic activation (S9-mix) using 4-nitroquinoline-N-oxide and benzo(a)pyrene as positive controls, and vehicles as negative controls.

Results

In the absence of S9, all extracts were found to induce significant DNA damage without affecting the cell viability. T. schimperi and R. steudelii were the most potent DNA-damaging extracts, and G. lotoides and P. zeylanica the least potent. The addition of S9 had different effects on the DNA damage induced by the extracts: it lowered the DNA damaging effect of P. zeylanica, did not affect the DNA damaging effect of T. schimperi, and increased the DNA damaging effects of R. steudelii and G. lotoides.

Conclusion

The findings of the present study suggest that all extracts evaluated have a genotoxic potential in vitro which needs to be substantiated by further studies.  相似文献   

4.

Ethnopharmacological relevance

Shilajit is a multi-component natural occurring mineral substance used in Ayurveda and Siddha systems of medicine which originated in India. Its source can be traced to the mountainous regions, where the hilly tribes first identified its beneficial use. Shilajit is aptly referred to as ‘rasayana’/‘rasayanam’ in Ayurveda and Siddha literature which means rejuvenator because it prevents ailment and enhances the quality of life.

Materials and Methods

An attempt has been put forth to review shilajit pertaining to its origin, synonyms, varieties, physical properties, chemical constituents, therapeutic properties and important biological properties to affirm its rasayana property. All relevant information on shilajit was collected from classical texts including pharmacopoeias, formularies, etc. Moreover, select doctoral thesis from Banaras Hindu University, Varanasi and Gujarat Ayurved University, Jamnagar were also scanned. Published papers on shilajit were collected from important databases for biomedical sciences. Amongst, the various biological properties of shilajit, antioxidant activity and immuno-modulatory activity were focused as it is closely related to its rasayana potential.

Results

This review finds that shilajit is used in twenty Sastric formulations and twenty-four proprietary drugs for extraneous indications. Even-though, there is a long history of use of shilajit in traditional Indian materia medica, shilajit unfortunately lacks scientific evaluation and systematic documentation. In vivo antioxidant activity of shilajit has been studied at an irrelevant dose and without using a positive control. The immuno-modulatory activity does not stand the test of critical assessment and currently may be considered as unproven.

Conclusion

Based on the earlier studies, the bioactivity of shilajit lacks substantial evidence. Nevertheless, further studies are imperative to overcome the lacuna in establishing the antioxidant property of shilajit and more specific assays are needed to vouch shilajit as an immuno-modulator which may be of use to establish its rasayana potential.  相似文献   

5.
Using the ethnomedical data approach, some Tanzanian plants that are used in Tanzanian traditional medicine for cancer or non-cancer diseases were collected and evaluated for cytotoxic activity. The antiproliferative effect of the methanolic extracts (10 and 100 microg/ml) of 47 plants was evaluated in vitro on three human cell lines (HeLa, cervical carcinoma; HT29, colon adenocarcinoma; and A431, skin carcinoma). From the nine plants that are used to treat cancer, two plants (22%) exhibited pronounced cytotoxic effect (<25% cell proliferation) at least in one of the tested cell lines. For the 38 plants that are used to treat non-cancer diseases, 14 plants (37%) exhibited pronounced cytotoxic effect (<25% cell proliferation). Cell type cytotoxic specificity was observed in some extracts. Overall, the A431 cells were much more sensitive to most of the extracts than the other cell lines. For the plants that are used as anticancer herbal drugs, our results indicate that there is no correlation between the reported use of these plants and their cytotoxic activity obtained in this study. However, plants that have shown pronounced cytotoxic activity will be evaluated further for the possible isolation of active antitumor compounds.  相似文献   

6.
Two main research questions are framing this investigation: (1) the main taxa of the medicinal importance value altered the Showbak forest stand and species composition? (2) The most safe species and what are the toxic ones (unsafe). These two research questions are the vital ones to draw a clear image about the wild medicinal plants of this investigated area of Showbak region in Jordan.  相似文献   

7.

Ethnopharmacological relevance

Xanthii seeds commonly called Cang-Erzi were used as a traditional Chinese medicine for treating sinusitis, headache due to rheumatism and skin pruritus.

Aim of the study

In order to evaluate the actions of this plant, studies were performed on antioxidant, antinociceptive, and anti-inflammatory activities.

Materials and methods

The aqueous extract of Xanthii Fructus (AXF) was evaluated in mice for anti-inflammatory activity using carrageenan-induced hind paw edema model. The antinociceptive activity of AXF was evaluated by writhing and formalin tests. Antioxidant properties were assayed in terms of antioxidant activity by scavenging abilities on 1, 1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid (ABTS), reducing activity and liposome protection. In addition, the total phenolic content was determined with spectrophotometric method.

Results

AXF exhibited significant radical scavenging and reducing activity. And oral treatment with AXF elicited inhibitory activity on acetic acid effect and reduced the formalin effect at the late-phase. In the anti-inflammatory test, AXF inhibited the development of paw edema induced by λ-carrageenan (Carr). AXF decreased the paw edema at the fifth hour after Carr administration, and increased the activities of catalase (CAT), superoxide dismutase (SOD), and glutathione peroxidase (GPx) in the liver tissue and decreased the malondialdehyde (MDA) level in the edema paw. AXF decreased the level of serum nitric oxide (NO) and tumor necrosis factor (TNF)-α after Carr injection and AXF decreased the levels of inducible NO synthase (iNOS) and cyclooxygenase-2 (COX-2) expressions in paw edema at the fifth hour.

Conclusions

AXF shows antioxidant, antinociceptive, and anti-inflammatory activities, supporting the folkloric usage of the plant to treat various inflammatory diseases.  相似文献   

8.

Ethnopharmacological relevance

Extracts of the medicinal plant species Dodonaea polyandra were investigated as part of a collegial research partnership between Northern Kaanju traditional owners represented by Chuulangun Aboriginal Corporation (centred on the Wenlock and Pascoe Rivers, Cape York Peninsula, Queensland, Australia) and university-based researchers. D. polyandra, known as “Uncha” in Kaanju language, is used in Northern Kaanju Traditional Medicine for relief from pain associated with toothache and related ailments. The species has a restricted distribution in Cape York Peninsula and there has been no previous Western scientific investigation of its pharmacology or chemistry.

Aim of the study

The current study investigates the anti-inflammatory effects of several extracts from D. polyandra.

Materials and methods

Phytochemical screening was conducted using TLC. Anti-inflammatory effects of leaf extracts were determined using an acute mouse ear oedema model induced by croton oil and 12-o-tetradecanoylphorbol-13-acetate (TPA) chemical irritants.

Results

Flavonoid and terpenoid secondary compounds were detected in leaf extracts of D. polyandra. Non-polar hexane and methylene chloride/methanol extracts showed potent inhibition of inflammation in TPA-induced mouse ear oedema by 72.12 and 79.81%, respectively, after 24 h at 0.4 mg/ear.

Conclusion

In a mouse model of acute inflammation, this study revealed that leaf extracts of D. polyandra possess significant anti-inflammatory potential. These results contribute to a Western scientific understanding of the ethnopharmacological use of the plant in Northern Kaanju Medicine for reducing tooth-related pain.  相似文献   

9.
Petroleum ether, ethanol, butanol, and aqueous crude extracts of the whole aerial parts of nine plants exhibited variable degrees of antimicrobial activity against four bacterial and three fungal species. Methanol and hexane extracts did not show any activity. Compared with standard antibiotics, extracts had low to moderate activity. The activity spectrum is wide against gram-positive and negative bacteria as well as fungi tested. However, the butanol extracts at 4 mg/disc of Ononis spinosa (OS), Bryonia syriaca (BS) had high moderate antifungal activity against Aspergillus flavus, Fusarium moniliforme and Candida albicans relative to miconazole nitrate at 40 microg/disc. Furthermore, higher antibacterial activity was observed though low to moderate compared with streptomycin and very comparable with chloramphenicol. Cyclaman persicum (CP) petroleum ether extracts only exhibited pronounced antibacterial activity.  相似文献   

10.
转化医学核心是指从实验室到病床,再到实验室。将这一国际医学领域新概念引入中医学,对其现代化发展将具有深远意义。中医学与转化医学结合模式可建立在整体观、辨证论治的基础上,从系统生物学和个体化医学的角度打开研究思路,鼓励多学科交叉,从而实现中医学的转化。笔者以多年来实践为例,以慢性筋骨病推广方案、中医理论与干细胞结合研究、中医临床与转化医学研究模式探索等几方面为切入点,阐述了转化医学在中医药中的应用,并展望了中医学与转化医学结合的未来将立足于"治未病",并将与西方医学殊途同归。  相似文献   

11.
目的:观察中药配方颗粒与传统中药饮片在临床治疗中的疗效分析。方法:选取聊城市中医医院收治的100例盗汗患者,将50例采用传统中药饮片进行治疗的患者作为对照组;将50例采用中药配方颗粒进行治疗的患者作为研究组;对比两组患者治疗的临床效果。结果:治疗后,在肺卫不固型患者中,研究组患者临床治疗的总有效率显著高于对照组;且在阴虚火旺型患者中,研究组患者临床治疗的总有效率同样高于对照组(P <0.05)。结论:中药配方颗粒在盗汗患者中具有良好的临床效果,能够有效提高患者的治疗效果,值得推广。  相似文献   

12.
动物抑郁症模型的建立是研究中药治疗抑郁症疗效、机理的前提和基础,许多中药在用于治疗抑郁症模型小鼠的实验研究中表现出较好的抗抑郁作用,因此近年来越来越受重视.本文对中药用于抑郁症动物模型的实验研究现状做一归纳.  相似文献   

13.

Ethnopharmacological relevance

Sri Lanka has rich traditional systems of medicine, which cater to 60–70% of the rural population?s primary health care needs. However, development of existing systems has been hindered by the unavailability of up-to-date information on medicinal materials and other related issues. For streamlining purposes, we investigated the present-day scenario of country?s medicinal plant industry by gathering up-to-date information on the types of raw materials required, their aggregate quantities, heavily used and rare materials, family wise distribution, challenges faced by stakeholders as well as other pertinent issues.

Materials and methods

The present survey covered the selected government Ayurveda hospitals, traditional and Ayurveda practitioners, large and small-scale herbal drug and cosmetic manufactures, importers, collectors and Ayurveda commissioners throughout the country. A systematic questionnaire was distributed and face-to-face interviews were conducted. Collected data were tabulated and analyzed.

Results

A diverse range of medicinal materials, including 290 species (64.73%) from dried plants, 59 (13.17%) from fresh plants, 69 (15.40%) from minerals, 18 (4.02%) from animal sources and 12 (2.68%) from other sources were recorded. A total of 302 plant species belonging to 95 families, dominated by Leguminosae family, was listed. Out of these, 46 species belonging to 35 families were used intensively. A large portion of herbal materials was of completely local origin (71.13%) while 26% were imported and the rest (2.87%) can be obtained by both routes. Leaves were the most highly used part of the plant (22.2%). High price, poor quality, insufficient or totally absence of continuous supply and adulteration were the main constraints faced by the stakeholders. The unavailability of systematic cultivation and processing protocols, incorrect identification, and lack of proper quality control methodologies were identified as major challenges of the industry.

Conclusion

The present study revealed a currently bleak scenario of the medicinal material industry in Sri Lanka. The results clearly demonstrated the need to implement a national strategy to address the major challenges faced by different stakeholders. Information generated through this study could be effectively incorporated for the formulation of a sustainable development strategy for this industry.  相似文献   

14.

Ethnopharmacological relevance

Cnidoscolus chayamansa Mc Vaugh (Euphorbiaceae) is commonly known as ‘chaya’ in Central America. In South East Mexico, because of its high nutritional values, is an important part of the diet of many indigenous communities. Chaya is also used as a traditional remedy for the treatment of diabetes, rheumatism, gastrointestinal disorders and inflammation-related diseases. Although Cnidoscolus chayamansa is one of most used and valued medicinal plants, only few studies on documenting its pharmacological properties can be found.

Materials and methods

Dried leaves of Cnidoscolus chayamansa were subjected to a successive maceration using Hex, EtOAc and EtOH. The antioxidant activities of the extracts were tested using the DPPH radical scavenging, Ferric reducing/antioxidant power and total phenolic content assays. To determine the anti-inflammatory activity, the TPA-induced mouse ear edema and the carrageenan-induced mouse paw edema assays were used. The cardioprotective effects of the EtOH extract was determined using the ischemia/reperfusion (I/R) rat model. Finally, the acute toxicity was determined using Lorke's method.

Results

The results showed a similar anti-inflammatory activity (≈30%) for all extracts but only the EtOAc extract showed relevant activity when applied intraperitoneally. When tested for their antioxidant activity none of the extracts showed a significant activity suggesting that the antinflammatory activity is not related to a direct free radical scavenging of the extracts. Additionally, the EtOH extract showed a strong cardioprotective effect at 500 mg/kg when given orally. Both the EtOAc and the EtOH extract have a LD50 >5 g/kg, confirming their safety in acute oral administration.

Conclusions

All these results are relevant for a better understanding of the therapeutic used of Cnidoscolus chayamansa in the Mexican traditional medicine and highlights its cardioprotective potential.  相似文献   

15.

Aim of study

This study screened for anthelmintic activity of plant species traditionally used in the treatment of intestinal parasites and their symptoms in Sub-Saharan Africa in an effort to confirm their local use and aid in the search for new compounds since resistance is a growing concern.

Materials and methods

Aqueous and organic extracts of 33 plant parts from 17 plant species traditionally used in the treatment of intestinal infections in Sub-Saharan Africa were evaluated for their anthelmintic activity. This activity was assessed using a standard motility assay against a levamisole resistant strain of the nematode Caenorhabditis elegans.

Results and conclusions

Anthelmintic activity was confirmed in 12 plant species. Of these, eight showed strong evidence of activity (p < 0.0001), one exhibited moderate evidence of activity (p < 0.001), three demonstrated weak evidence of activity (p < 0.05), and five plants showed no evidence of activity. The eight species with the strongest evidence of activity were Acacia polyacantha, Anogeissus leiocarpus, Bridelia micrantha, Cassia sieberiana, Combretum nigricans, Grewia bicolor, Strychnos spinosa and Ziziphus mucronata. In only two cases, Anogeissus leiocarpus and Cassia sieberiana, anthelmintic activity has been previously confirmed. The activity demonstrated against the levamisole resistant strain of Caenorhabditis elegans and the presence of molecules in these plants known or suspected of having a broad spectrum of activity provide support for further study of these plants and their compounds as possible treatments for parasitic worm infections.  相似文献   

16.
Extracts obtained from 10 trees used in South African traditional medicine were screened for antibacterial, anti-inflammatory (COX-1 and COX-2) and anti-cholinesterase activities and investigated for potential mutagenic effects using the Ames test. Antibacterial activity was detected using the disc-diffusion and micro-dilution assays. The extracts were tested against Gram-positive bacteria: Bacillus subtilis, Staphylococcus aureus, Micrococcus luteus and Gram-negative bacteria: Escherichia coli and Klebsiella pneumoniae. Of the 78 different plant extracts investigated, 80% showed activity against both Gram-positive and Gram-negative bacteria in the disc-diffusion assay. In the micro-dilution assay, 60% of the plant extracts showed minimum inhibitory concentration (MIC) values < or =1.56 mg ml(-1). The lowest MIC value (0.092 mg ml(-1)) was recorded for an ethyl acetate root extract of Acacia sieberiana against Staphylococcus aureus and Escherichia coli. In the anti-inflammatory assay, 70% of the investigated plant extracts (0.25 mg ml(-1)) inhibited both COX-1 and COX-2 activity (>50% and 70% for water and organic solvent extracts, respectively). An ethyl acetate leaf extract of Trichilia dregeana showed selective inhibition of COX-2 (81%). In the acetylcholinesterase inhibitory test, 21% of the plant extracts were active at a concentration < or =1 mg ml(-1) using the micro-dilution assay. The lowest IC(50) value was 0.04 mg ml(-1) obtained with an ethanol bark extract of Combretum kraussii. None of the investigated plants showed any potential mutagenic effects.  相似文献   

17.
Labrador tea (Ledum groenlandicum Retzius) is an ericaceae widely distributed in North America. The leaves and twigs were used in Native American traditional medicine to treat several inflammatory pathologies such as asthma, rheumatisms and burns. Reactive oxygen species as well as reactive nitrogen species such as nitric oxide (NO) contribute significantly to these pathologies. In this study, the antioxidant, anti-inflammatory and anticancer activities of crude methanol extracts of leaves and twigs from Ledum groenlandicum were investigated. Both extracts showed a strong antioxidant activity using the ORAC method and a cell based-assay. Moreover, the twig and leaf extracts showed significant anti-inflammatory activity, inhibiting NO release, respectively, by 28 and 17% at 25 microg/ml in LPS-stimulated RAW 264.7 macrophages. In comparison, N(G)-nitro-L-arginine methyl ester (L-NAME), a nitric oxide synthase inhibitor, reduced NO release by 24% at 25 microg/ml. The twig extract was also found to be active against DLD-1 colon carcinoma and A-549 lung carcinoma cells, with IC(50) values of 43+/-1 and 65+/-8 microg/ml, respectively. The bioguided study of the twig extract resulted in the isolation and identification of ursolic acid, a known triterpene. Ursolic acid was active against DLD-1 (IC(50): 9.3+/-0.3 microM) and A-549 (IC(50): 8.9+/-0.2 microM), suggesting it is, in part, responsible of the anticancer activity of the twig extract.  相似文献   

18.
A total of 418 healers have been interviewed in Guinea, a coastal country of West Africa, ranging between 7 degrees 30 and 12 degrees 30 of northern latitude and 8 degrees and 15 degrees of western longitude. Plant species used by the local inhabitants to treat infectious diseases were identified using ethnobotanical, ethnographic and taxonomic methods. During these investigations, 218 plants were registered, of which the following were the most frequently used: Erythrina senegalensis, Bridelia ferruginea, Crossopteryx febrifuga, Ximenia americana, Annona senegalensis, Cochlospermum tinctorium, Cochlospermum planchonii, Lantana camara, Costus afer, Psidium guajava, Terminalia glaucescens, Uapaca somon and Swartzia madagascariensis. Most plants, and especially the leaves, were essentially used as a decoction. In order to assess antibacterial activity, 190 recipes were prepared and biologically tested, among which six showed activity (minimal inhibitory concentration<125 microg/ml) against Bacillus cereus, Mycobacterium fortuitum, Staphylococcus aureus, or Candida albicans, i.e., Entada africana, Chlorophora regia, Erythrina senegalensis, Harrisonia abyssinica, Uvaria tomentosa, and a mixture of six plants consisting of Swartzia madagascariensis, Isoberlinia doka, Annona senegalensis, Gardenia ternifolia, Terminalia glaucescens and Erythrina senegalensis.  相似文献   

19.
马来西亚的传统与补充替代医学体系由马来西亚传统医学、中医学、印度传统医学、顺势疗法和补充替代医学组成,其管理机构为卫生部的传统与补充替代医学处,工作主要集中于产品、实践、培训和研究4个领域.马来西亚政府正致力于将传统与补充替代医学纳入现存的卫生保健体系中.  相似文献   

20.
Extracts from Lychnophora species are traditionally used in Brazil as anti-inflammatory, and to treat bruise, pain and rheumatism. The ethanolic extract of aerial parts of five species of Lychnophoras and one specie of Lychnophoriopsis were examined for the antinociceptive (hot-plate and writhing tests) and anti-inflammatory (carrageenan-induced paw oedema test) activity in mice, by oral and topical routes, respectively. In the hot-plate test, the Lychnophora pinaster (0.75 g/kg) and Lychnophora ericoides (1.50 g/kg) extracts significantly increased the time for licking of the paws. The species Lychnophora passerina, Lychnophoriopsis candelabrum and Lychnophora pinaster, using the dose of 0.75 g/kg, and Lychnophora ericoides and Lychnophora trichocarpha in both doses evaluated (0.75 and 1.50 g/kg) significantly reduced the number of writhes induced by acetic acid. The administration of Lychnophora pinaster and Lychnophora trichocarpha ointments, in both concentrations evaluated (5 and 10%, w/w), and Lychnophora passerina and Lychnophoriopsis candelabrum, in the concentration of 10%, significantly reduced the paw oedema measured 3 h after carrageenan administration, suggesting, for the first time, an anti-inflammatory activity upon topical administration of these species. The present work comparatively demonstrated the antinociceptive and anti-inflammatory activities of some Brazilian Lychnophoras.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号