Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 13 de 13
Filtrar
Mais filtros











Base de dados
Intervalo de ano de publicação
1.
Int Microbiol ; 2024 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-38951390

RESUMO

Medicinal plants are rich sources of pharmaceutically important compounds and have been utilized for the treatment of various diseases since ancient times. Valeriana jatamansi Jones, also known as Indian valerian, holds a special place among temperate Himalayan medicinal plants and is renowned for its therapeutic properties in addressing a variety of ailments. The therapeutic potential of V. jatamansi is attributed to the presence of valuable compounds such as valepotriates, sesquiterpenoids, valeriananoids, jatamanins, lignans, cryptomeridiol, maaliol, xanthorrhizzol, and patchouli alcohol found in its rhizome and roots. This study employed various treatments, including the cultivation of V. jatamansi with the inoculation of Funneliformis mosseae, F. constrictus, and a consortium of arbuscular mycorrhizal fungi (AMF), to investigate their influence on biomass production, chlorophyll content, and the accumulation of bioactive compounds in V. jatamansi. The results revealed significant improvement in these parameters in the inoculated plants. The parameters of plants inoculated with F. mosseae were the highest, followed by those of plants inoculated with F. constrictus and a mixture of AMFs. This study not only underscores the potential of native AMF for promoting the growth of V. jatamansi but also elucidates their role in influencing the synthesis of bioactive compounds. The cultivation of V. jatamansi with native AMF has emerged as a sustainable and eco-friendly approach, providing the dual benefit of enhancing both the medicinal and economic value of this valuable plant. This research contributes valuable insights into the practical application of mycorrhizal associations for the cultivation of medicinal plants, bridging the realms of agriculture and pharmaceuticals.

2.
Microsc Res Tech ; 2024 Jul 23.
Artigo em Inglês | MEDLINE | ID: mdl-39044614

RESUMO

One of the largest subgenera of the genus Lactarius, Lactarius subg. Russularia is abundant in the forests of the Himalayas. This article proposes Lactarius crassostipes sp. nov. and Lactarius flavocorpus sp. nov. under the L. subgenus Russularia. It includes comprehensive macro- and micro-morphological descriptions, scanning electron microscopy (SEM) micrographs, drawings, and comparisons with related species. The taxa's novelty is validated using phylogenetic analyses based on nrITS. RESEARCH HIGHLIGHTS: SEM and subsequent nrITS-based molecular phylogeny revealed two novel species (L. crassostipes and L. flavocorpus) of the genus Lactarius subg. Russularia. To further characterize the size, form, and ornamentation of these novel species' basidiospores, SEM analysis is an additional tool. In L. crassostipes "crasso" means thick and "stipes" indicates stipe. In contrast to L. flavocorpus, where "flavocorpus" refers to the golden yellow fruiting body, the name alludes to its unique thick stipe. L. crassostipes sp. nov. and L. flavocorpus sp. nov have been collected from the coniferous and broad-leaved forests of Union Territory of Jammu and Kashmir, India, respectively. The diagnostic characteristics, habit, habitat, and similarities to related species are given.

3.
J Fungi (Basel) ; 9(7)2023 Jul 20.
Artigo em Inglês | MEDLINE | ID: mdl-37504751

RESUMO

Kargil is a cold desert with hostile ecological conditions such as low temperature and precipitation, as well as difficult terrains. However, several wild mushrooms thrive well under such an extreme environment. Despite their abundance, the chemical composition of indigenous mushrooms has not been explored. This study aimed to assess the potential of two wild edible mushrooms from Kargil, Lactarius drassinus and Lactarius controversus, as food supplements by evaluating their nutritional and nutraceutical properties. Nutritional attributes such as total protein, available carbohydrates, soluble sugars, and vitamins were found to be high in the mushroom species. Furthermore, high mineral accumulation and relatively lower antinutrient concentrations resulted in higher bioavailabilities of Zn, Fe, Ca, and Mg. Gas-chromatography-mass-spectrometry-based metabolite profiling revealed that although the two mushroom species showed similar metabolite compositions, their relative concentrations differed. Sugars were the predominant compounds identified in both the species, with sugar alcohols being the major contributor. The second most abundant class of compound in L. drassinus was amino acids, with 5-oxoproline as the major contributor. On the other hand, fatty acids were the second most abundant compounds in L. controversus, with high oleic and linoleic acid concentrations. In the ultra-performance-liquid-chromatography-based quantification of phenolic compounds, chlorogenic acid was found to be highest in in terms of its concentration in both the mushrooms studied, followed by quercetin dihydrate and gallic acid in L. drassinus and L. controversus, respectively. Moreover, high antioxidant activities attributable to their high phenol, flavonoid, and carotenoid concentrations were observed. Overall, the two mushrooms offer well-balanced sources of nutritional and nutraceutical compounds, making them healthy foods.

4.
Curr Microbiol ; 80(6): 192, 2023 Apr 26.
Artigo em Inglês | MEDLINE | ID: mdl-37101055

RESUMO

The quest for increasing agricultural yield due to increasing population pressure and demands for healthy food has inevitably led to the indiscriminate use of chemical fertilizers. On the contrary, the exposure of the crops to abiotic stress and biotic stress interferes with crop growth further hindering the productivity. Sustainable agricultural practices are of major importance to enhance production and feed the rising population. The use of plant growth promoting (PGP) rhizospheric microbes is emerging as an efficient approach to ameliorate global dependence on chemicals, improve stress tolerance of plants, boost up growth and ensure food security. Rhizosphere associated microbiomes promote the growth by enhancing the uptake of the nutrients, producing plant growth regulators, iron chelating complexes, shaping the root system under stress conditions and decreasing the levels of inhibitory ethylene concentrations and protecting plants from oxidative stress. Plant growth-promoting rhizospheric microbes belong to diverse range of genera including Acinetobacter, Achromobacter, Aspergillus, Bacillus, Burkholderia, Flavobacterium, Klebsiella, Micrococcus, Penicillium, Pseudomonas, Serratia and Trichoderma. Plant growth promoting microbes are an interesting aspect of research for scientific community and a number of formulations of beneficial microbes are also commercially available. Thus, recent progress in our understanding on rhizospheric microbiomes along with their major roles and mechanisms of action under natural and stressful conditions should facilitate their application as a reliable component in the management of sustainable agricultural system. This review highlights the diversity of plant growth promoting rhizospheric microbes, their mechanisms of plant growth promotion, their role under biotic and abiotic stress and status of biofertilizers. The article further focuses on the role of omics approaches in plant growth promoting rhizospheric microbes and draft genome of PGP microbes.


Assuntos
Agricultura , Microbiota , Agricultura/métodos , Produtos Agrícolas/microbiologia , Reguladores de Crescimento de Plantas , Biodiversidade , Microbiologia do Solo
5.
J Chromatogr Sci ; 61(2): 172-176, 2023 Feb 03.
Artigo em Inglês | MEDLINE | ID: mdl-35253055

RESUMO

Chirayata-the whole dried plant of Swertia chirayita-is an important traditional drug of Indian System of Medicines. A novel reverse-phase high performance liquid chromatography (RP-HPLC) method has been developed for the simultaneous determination and quantification of amaroswerin, amarogentin and andrographolide in a herbal drug "Chirayata," which is oftenly adulterated/substituted with herbal drug Kalmegh. The developed method is in accordance with International Council for Harmonization guidelines and is simple, precise, accurate, rapid, reproducible and specific to determine amarogentin, amaroswerin and andrographolide. Reverse-phase column (Water's X-bridge C18, 5 µm, 4.6 mm × 250 mm) with high resolution for all marker compounds was used with binary gradient elution (methanol:water) with a flow rate of 1 mL/min and detection at 235 nm. The developed method showed good linearity (R2 > 0.999) in a relatively wider range of concentration 2.968-95.00 ppm for amarogentin, amaroswerin and 5.625-180 ppm for andrographolide. The method is important for quality control analysis of drug Chirayata.


Assuntos
Iridoides , Cromatografia Líquida de Alta Pressão/métodos , Iridoides/análise
6.
J Ethnobiol Ethnomed ; 18(1): 23, 2022 Mar 24.
Artigo em Inglês | MEDLINE | ID: mdl-35331275

RESUMO

BACKGROUND: Union Territory of Jammu and Kashmir (J&K) has a rich tradition of usage of wild edible mushrooms (WEMs) for culinary and medicinal purposes. But very few studies, restricted to some regions of the Union Territory, have been conducted to enlist the WEM. District Jammu has never been explored for WEM. Moreover, the quantification of the traditional knowledge of WEM has not been carried out as yet in J&K. Therefore, the present study was conducted in the Jammu district with the aims of enlisting the WEM and its usage, finding the most used WEM, and enumerating the consensus of usage for a species and associated knowledge. METHODS: A total of 192 informants between the age of 25 and 87 years were interviewed. The collected information was organized and arranged based on use reports for quantitative analysis. The cultural importance index (CI) and factor informant consensus (Fic) were calculated to estimate the cultural importance and to test homogeneity of information and knowledge sharing about WEM, respectively. Analysis of variance was used to evaluate the significance of differences in the usage of WEM among different informant categories. RESULTS: Results of the present study show that the locals were having knowledge of fourteen fleshy fungi that are mainly utilized for culinary purposes. They also stated various medicinal values of some of these fungi. Agaricaceae and Lyophyllaceae were the most used families, and Termitomyces (5 species) was the most represented genus. Based on CI values, Termitomyces sp. (CI 0.57) was the most important and diversely used species. Termitomyces heimii, Termitomyces clypeatus, and Termitomyces striatus var. annulatus were the other culturally important and frequently consumed species by the locals. More than 78.6% of these WEM were new records as culinary and medicinal for J&K (UT). The values of factor informant consensus (Fic) varied between 0.98 (culinary) and 0.76 (skin diseases). Females, elders, and informants who have not attended schools were having significantly (P < 0.05) higher information regarding WEM. CONCLUSION: The inhabitants of district Jammu had good knowledge of WEM, but no documentation, lying of most of the information with elders and uneducated people, and destruction of forests and other natural habitats of WEM pose a serious threat of losing this valuable information in near future. An ardent need is to educate locals regarding regionally available WEM. Further studies are recommended for developing protocols of cultivation of these WEM so that their future availability is ascertained along with creating income resources for the local population.


Assuntos
Agaricales , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Florestas , Humanos , Índia , Conhecimento , Pessoa de Meia-Idade
7.
Extremophiles ; 24(5): 749-758, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32705341

RESUMO

Psychrophilic fungi are a critical biotic component in cold deserts that serves a central role in nutrient recycling and biogeochemical cycles. Despite their ecological significance, culture-independent studies on psychrophilic mycobiome are limited. In the present study, the fungal diversity patterns across the Drass, an Indian cold desert in the Himalaya, were indexed by targeted amplicon pyrosequencing (ITS). In the Drass dataset, Ascomycota was represented by 92 genera, while 22 genera represented Basidiomycota. The most abundant genus was Conocybe (20.46%). Most of the identified genera were reported in the literature to be prolific extracellular hydrolytic enzyme producers. To identify whether the Drass fungal assemblages share similarities to other cold deserts, these were further compared to Antarctic and Arctic cold deserts. Comparative analysis across the three cold deserts indicated the dominance of Dikarya (Ascomycota and Basidiomycota). The observed alpha diversity, Shannon index as well as Pielou's evenness was highest in the Antarctic followed by Drass and Arctic datasets. The genera Malassezia, Preussia, Pseudogymnoascus, Cadophora, Geopora, Monodictys, Tetracladium, Titaea, Mortierella, and Cladosporium were common to all the cold deserts. Furthermore, Conocybe was represented predominantly in Drass. Interestingly, the genus Conocybe has not been previously reported from any other studies on Antarctic or Arctic biomes. To the best of our knowledge, this is the first fungal metagenome study in Drass soil. Our analysis shows that despite the similarities of low temperature among the cold deserts, a significant differential abundance of fungal communities prevails in the global cold deserts.


Assuntos
Fungos , Metagenoma , Micobioma , Regiões Antárticas , Regiões Árticas , Biodiversidade , Fungos/genética
8.
J Ethnobiol Ethnomed ; 14(1): 73, 2018 Nov 29.
Artigo em Inglês | MEDLINE | ID: mdl-30486847

RESUMO

BACKGROUND: Wild edible plants (WEPs) refer to edible species that are not cultivated or domesticated. WEPs have an important role to play in poverty eradication, security of food availability, diversification of agriculture, generation of income resources, and alleviating malnutrition. In the present study, an inventory of traditionally used WEPs from Udhampur district of J&K, India, has been prepared. METHODS: A systematic and extensive ethnobotanical survey was carried out in different villages of the district for the collection of information on WEPs. The data collected through questionnaire and interviews was then analyzed for cultural importance index (CI) and factor informant consensus (Fic) to know the cultural significance of WEPs and consensus for the knowledge of WEPs among the informants. RESULTS: A total of 90 plant species belonging to 45 families and 78 genera were edible and serve as wild phytofoods in the present study. Species richness of wild edible species was the maximum for vegetables (46 species) followed by fruits (37 species) and medicinal plants (36 species). Culturally (on the basis of CI), the most important vegetable and fruit species were Diplazium esculentum, Fumaria indica, Taraxacum campylodes, Urtica dioica, Phyllanthus emblica, Punica granatum, Cordia dichotoma, Syzygium cumini, Ficus palmata, etc. The highest use-report (626) was recorded for vegetables whereas the maximum mean use-report (14.8) was recorded for fruits. On an average, 20.7 wild edible species were used per informant. Informant consensus index (Fic) varied between 0.83 and 0.94 for raw vegetables and preserved vegetables, respectively. CONCLUSION: One of the most important issues of this era is hunger for which one of the possible solutions is the usage of WEPs. The local populace of Udhampur has good knowledge of WEPs, and this legacy of traditional culture must be conserved.


Assuntos
Etnobotânica , Plantas Comestíveis , Frutas , Humanos , Índia , Conhecimento , Plantas Medicinais , Verduras
9.
J Ethnopharmacol ; 170: 255-74, 2015 Jul 21.
Artigo em Inglês | MEDLINE | ID: mdl-26008867

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: Primitive human societies have always relied on plants and plant products for various remedies. In certain areas, these folk medical prescriptions are endemic and have survived through ages from one generation to the next through word of mouth. They do not exist as written knowledge. The present study was undertaken with an objective of documenting the ethnobotanical information of medicinal plants of Shankaracharya Hill by taking the help of local herbalists, elderly and knowledgeable people. MATERIAL AND METHODS: The data was quantitatively analysed using use-value (UV), informant consensus factor (ICF) and fidelity level (Fl%) indices. RESULTS: Total 130 plant species from 57 families and 111 genera were ethno-medicinally utilized by the 103 informants interviewed in the present study. The most used families were Asteraceae, Rosaceae, Lamiaceae, Fabaceae and Brassicaceae. The medicinal plants were mainly herbs (79.2%). Leaves were the most used (27.6%) plant part followed by whole plant (14.8%), root (11.4%) and seed (10.5%). The most important species on the basis of UV were Viola odorata, Taraxacum campylodes, Aesculus hippocastanum, Artemisia absinthium, Daucus carota, Thymus serphyllum, Ephedra gerardiana and Salvia moorcroftiana. The values ICF ranged between 0.93 and 0.76. Only Epilobium hirsutum recorded 100% Fl. Some of the most important medicinal plants with high Fl values were Tribulus terrestris, Asparagus officinalis, Trifolium repens, Anemone biflora, Melia azedarach, A. absinthium, Lonicera quinquelocularis, Rosa webbiana, D. carota, Oxalis corniculata and Potentilla reptans. CONCLUSION: The contribution of plant parts collected through destructive methods was 29.5%. Harvesting of roots, rhizomes, bulbs and corm kills the parent plant and could be a severe threat for survival of the often rare and slowly reproducing medicinal plants, and therefore need sustainable utilization and conservation strategies. Ethnomedicinal species like A. absinthium, A. hippocastanum, D. carota, M. azedarach, T. campylodes, T. serphyllum, T. terrestris having high number of citations, UV and FL should be analyzed for phytochemicals and pharmacology.


Assuntos
Medicina Tradicional , Preparações de Plantas/uso terapêutico , Plantas Medicinais/química , Adulto , Idoso , Idoso de 80 Anos ou mais , Coleta de Dados , Etnofarmacologia , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Índia , Masculino , Pessoa de Meia-Idade , Fitoterapia/métodos , Preparações de Plantas/isolamento & purificação , Adulto Jovem
10.
J Ethnopharmacol ; 158 Pt A: 140-206, 2014 Dec 02.
Artigo em Inglês | MEDLINE | ID: mdl-25448505

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: Tharu community is the largest primitive indigenous community of the Uttarakhand, India. In this article we have scientifically enumerated medicinal plants and herbal preparations used by the Tharu community to treat various skin diseases, and discussed dermatological properties of these plants in the light of previous ethnomedicinal, microbiological, pharmacological, toxicological, phytochemical and clinical studies. MATERIALS AND METHODS: Ethnomedicinal survey was conducted in different villages of Tharu community located in district Udham Singh Nagar, Uttarakhand, India. Ethnomedicinal information on plants used to treat various skin diseases was collected from 122 individuals (93 males and 29 females), including 35 experienced herbal practitioners and 87 local villagers. For each of the recorded plant species the use value (UV) and fidelity level (FL) was calculated. The informant consensus factor (Fic) was also calculated to find out the homogeneity in the information given by the informants. RESULTS: A total of 90 plant species belonging to 86 genera and 48 families were used by the Tharu community to treat various skin diseases viz., wounds (38 spp.), boils (32 spp.), cuts (18 spp.), leprosy (11 spp.), eczema (10 spp.), itching (7 spp.), ringworm (5 spp.), burns (4 spp.), leucoderma (4 spp.), cracked heels (2 spp.), dandruff (3 spp.), body infection (2 spp.), chilblains (2 spp.), hair fall (2 spp.) and toes infection (2 spp.). Information on botanical name, family, vernacular name, ailments treated, mode and dose of herbal preparations, UV and FL values are provided for each of the recorded species. According to UV value most preferred plant species used to treat skin diseases by Tharu community was Ricinus communis L. followed by Tridax procumbens (L.) L., Azadirachta indica A. Juss., Ageratum conyzoides and Allium cepa L. CONCLUSIONS: The present study has revealed significant information on various medicinal plants used to treat skin diseases by Tharu community. Literature review has confirmed most of the claims made by the Tharu community regarding treatment of various skin diseases by the reported plants. The literature review has also revealed that products from very few of the reported plants are available in market, while most of the reported plants are still under preclinical or clinical trials. There are various known phytochemicals, and antibiotic, antibacterial, antiviral and antifungal agents present in these plants which may be synthesized or transformed to make pharmaceuticals. Some of the reported plants have shown promising results in preclinical trails and there is a need of clinical trials to see their safety and efficacy in treating various skin diseases. These plants may be targeted for development of new medicines, ointments or drugs for the treatment of skin diseases. However further toxicological, preclinical and clinical studies are needed to validate claims about little worked out plant species reported in the present study viz., Sida cordata (Burm. F.) Borss. Waalk., Millettia extensa (Benth.) Baker, Caesulia axillaris Roxb., Ehretia laevis Roxb., Vanda tessellate (Roxb.) Hook. Ex G.Don. and Eualaliopsis binata (Retz.) C.E. Hubb. Further studies on these plants are recommended to assess their potential in development of new skin care products.


Assuntos
Medicina Tradicional , Preparações de Plantas/uso terapêutico , Plantas Medicinais/química , Dermatopatias/tratamento farmacológico , Coleta de Dados , Etnofarmacologia , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Índia , Masculino , Dermatopatias/fisiopatologia
11.
J Ethnopharmacol ; 151(2): 1005-18, 2014 Feb 03.
Artigo em Inglês | MEDLINE | ID: mdl-24365639

RESUMO

UNLABELLED: Plants are an integral part of life in many indigenous communities. Besides, being the source of food, fodder, fuel, etc., the use of plants as herbal medicines in curing several ailments goes parallel to the human civilization. Ethnopharmacology involves the investigation of the plants used by the traditional communities and further understand the pharmacological basis of these culturally important medicinal plants. Present study was conducted to enlist the medicinal plants used by the local inhabitants of Udhampur district of Jammu and Kashmir, India. MATERIAL AND METHODS: Direct interviews of the 182 informants were conducted. The data generated through interviews was analysed using quantitative tools like use-value, factor informant consensus and fidelity level. RESULTS: A total of 166 species of flowering plants belonging to 63 families and 145 genera were observed to be medicinal and used to cure 78 ailments. Medicinal plants were mainly from Asteraceae, Solanaceae, Lamiaceae, Poaceae, Fabaceae and Amaranthaceae families. Leaves were the most used plant part in the medicinal preparations. The most important medicinal species of the present study site as per the use-value (UV) were: Achyranthes aspera, Zanthoxylum armatum, Acorus calamus, Syzygium cumini, Phyllanthus emblica, Plumbago zeylanica etc. The important ailment categories classified on the basis of factor informant consensus (Fic) were diabetes, external parasite, liver complaints and gastrointestinal disorders. The maximum number of species was utilized to cure gastrointestinal and dermatological ailments. Important species for each ailment category were also assessed using fidelity level. It was found that the older informants provided more information about the ethnomedicinal plants, but this valuable treasure of traditional knowledge is depleting significantly with the decrease in age and increase in educational level. CONCLUSION: The results of present ethnobotanical survey reveal the rich wealth of indigenous knowledge associated with the villagers of Udhampur district. A number of plants with a high citation values have given some leads for the further pharmocological research. Apart from these highly cited plants, studies need to be done on some other promising plants like Anagallis arvensis, Euphorbia hirta, Ficus benghalensis, Fumaria indica, Prunus persica, Rubus ellipticus, Taraxacum officinale, Tribulus terrestris etc.


Assuntos
Medicina Tradicional , Plantas Medicinais/classificação , Idoso , Coleta de Dados , Feminino , Humanos , Índia , Masculino , Pessoa de Meia-Idade
12.
J Med Imaging Radiat Oncol ; 55(4): 404-6, 2011 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-21843176

RESUMO

Dual thyroid ectopia is a very rare clinical entity, and only 28 cases have been reported previously in the literature. We describe another case in which CT established the diagnosis preoperatively and prevented an unnecessary surgery.


Assuntos
Coristoma/diagnóstico por imagem , Cisto Tireoglosso/diagnóstico por imagem , Glândula Tireoide , Criança , Diagnóstico Diferencial , Humanos , Masculino , Tomografia Computadorizada por Raios X
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA