[epidemiological data on human distomatosis (fasciola hepatica l.) in the limousin region of france. the species of plants eaten and snail hosts].these epidemiological studies concern 187 cases of human fasciolasis which occurred in the region of limousin, france on a period of 24 years. four species of plants have been eaten: nasturtium officinale, roripa silvestris, taraxacum gr. officinale, valerianella olitoria. these plants have been eaten during all months of the year, but with higher numbers in july-august and from november to february. the cases of human fasciolasis almost take place on all years, but their numbers are high in yea ...19807458166
[the enteroparasitic contamination of commercial vegetables in the cities of niterói and rio de janeiro, brazil].the aim of this study was to evaluate the parasitological contamination of vegetables to be consumed raw and commercialized in niterói and rio de janeiro cities. we studied 128 samples of vegetables--lettuce (lactuca sativa) and watercress (nasturtium officinale)--from supermarkets, greengrocer shops and self-service restaurants. only 6.2% of the samples were positive for parasitic structures with morphological aspects similar to those of animal parasites. we detected acarids, acarid eggs, insec ...199910495664
a simple shoot multiplication procedure using internode explants, and its application for particle bombardment and agrobacterium-mediated transformation in watercress.a shoot multiplication system derived from internode explants was investigated with the aim of improving genetic characteristics of watercress (nasturtium officinale r. br.). internodes of ca. 1 cm excised from in vitro stock shoot culture were placed on half-strength murashige and skoog (ms) medium supplemented with 3 mum 2,4-dichlorophenoxyacetic acid as a pre-treatment. laser scanning microscopy indicated clearly that the first sign of meristematic cell division could be seen after 1-2 days o ...200919308313
interaction between plants and bacteria: glucosinolates and phyllospheric colonization of cruciferous vegetables by enterobacter radicincitans dsm 16656.for determining interactive plant-bacterial effects between glucosinolates and phyllospheric colonization by a plant growth-promoting strain, enterobacter radicincitans dsm 16656, in cruciferous vegetables, the extent of bacterial colonization was assessed in 5 cruciferous vegetables (brassica juncea, brassica campestris, brassica oleracea var. capitata, brassica rapa var. alboglabra, nasturtium officinale) using a species-specific taqman probe and quantitative real-time pcr. colonization abilit ...200919556746
differing mechanisms of simple nitrile formation on glucosinolate degradation in lepidium sativum and nasturtium officinale seeds.glucosinolates are sulphur-containing glycosides found in brassicaceous plants that can be hydrolysed enzymatically by plant myrosinase or non-enzymatically to form primarily isothiocyanates and/or simple nitriles. from a human health perspective, isothiocyanates are quite important because they are major inducers of carcinogen-detoxifying enzymes. two of the most potent inducers are benzyl isothiocyanate (bitc) present in garden cress (lepidium sativum), and phenylethyl isothiocyanate (peitc) p ...200919747700
an efficient protocol for genetic transformation of watercress (nasturtium officinale) using agrobacterium rhizogenes.watercress (nasturtium officinale) is a member of the brassicaceae family and a rich source of glucosinolate, which has been shown to possess anticancer properties. to extract these compounds from n. officinale for study, a method was developed in which agrobacterium rhizogenes was used to transfer dna segments into plant genomes in order to produce hairy root cultures, which are a reliable source of plant compounds. the a. rhizogenes strain r1000 had the highest infection frequency and induces ...201021161399
organochlorines and heavy metals in wild caught food as a potential human health risk to the indigenous maori population of south canterbury, new zealand.increasing concentrations of anthropogenic contaminants in wild kai (food) of cultural, recreational and economic importance to the indigenous maori of new zealand is a potential human health risk. contaminants that are known to bioaccumulate through the food chain (e.g., organochlorine pesticides (ocps), pcbs and selected heavy metals) were analysed in important kai species including eel (anguilla sp.), brown trout (salmo trutta), black flounder (rhombosolea retiaria) and watercress (nasturtium ...201121402398
the conversion of 1-(malonylamino)cyclopropane-1-carboxylic acid to 1-aminocyclopropane-1-carboxylic acid in plant tissues.since 1-(malonylamino)cyclopropane-1-carboxylic acid (macc), the major conjugate of 1-aminocyclopropane-1-carboxylic acid (acc) in plant tissues, is a poor ethylene producer, it is generally thought that macc is a biologically inactive end product of acc. in the present study we have shown that the capability of watercress (nasturtium officinale r. br) stem sections and tobacco (nicotiana tabacum l.) leaf discs to convert exogenously applied macc to acc increased with increasing macc concentrati ...198616664869
antibacterial activity and synergistic effect between watercress extracts, 2-phenylethyl isothiocyanate and antibiotics against 11 isolates of escherichia coli from clinical and animal evaluate the possible in vitro interaction between natural extracts of watercress (nasturtium officinale r. br.) and 2-phenylethyl isothiocyanate, a natural compound derived gluconasturtiin largely present in watercress tissues, with a standard antibiotic, a synergy study was carried out against 11 isolates of extended-spectrum β-lactamases-escherichia coli. aqueous and methanolic watercress extracts and 2-phenylethyl isothiocyanate were combined with the antibiotic, and a disc diffusion assa ...201323682789
[comparative analysis of parasite detection methods in vegetables for human consumption].vegetable contamination is a persistent health problem. the different methods of processing and diagnosis make it difficult to determine the most effective and sensitive technique.201323431633
progesterone 5β-reductase genes of the brassicaceae family as function-associated molecular markers.this study aimed to define progesterone 5β-reductases (p5βr, ec, enone 1,4-reductases) as function-associated molecular markers at the plant family level. therefore cdnas were isolated from 25 brassicaceae species, including two species, erysimum crepidifolium and draba aizoides, known to produce cardiac glycosides. the sequences were used in a molecular phylogeny study. the cladogram created is congruent to the existing molecular analyses. recombinant his-tagged forms of the p5βr cdnas ...201526108256
a preliminary investigation of the jack-bean urease inhibition by randomly selected traditionally used herbal medicine.helicobacter pylori (h. pylori) infection leads to different clinical and pathological outcomes in humans, including chronic gastritis, peptic ulcer disease and gastric neoplasia and even gastric cancer and its eradiation dependst upon multi-drug therapy. the most effective therapy is still unknown and prompts people to make great efforts to find better and more modern natural or synthetic anti-h. pylori agents. in this report 21 randomly selected herbal methanolic extracts were evaluated for th ...201224250509
transformation of nasturtium officinale, barbarea verna and arabis caucasica for hairy roots and glucosinolate-myrosinase system production.hairy roots of nasturtium officinale, barbarea verna and arabis caucasica with active glucosinolate-myrosinase system were obtained after transformation with agrobacterium rhizogenes. hairy roots of n. officinale produced phenylalanine-derived gluconasturtiin and glucotropaeolin (max. 24 and 7 mg g(-1) dw). b. verna and a. caucasica hairy roots produced gluconasturtiin (max. 41 mg g(-1) dw) and methionine-derived glucoiberverin (max. 32 mg g(-1) dw), respectively. treatment of the roots with ami ...200919229477
influence of ph on lead uptake, chlorophyll and nitrogen content of nasturtium officinale r. br. and mentha aquatica the present study, effects of ph (5.0, 7.0 and 9.0) and lead (1, 5, 10, 25, 50 and 100 microg ml(-1)) were investigated on uptake of lead, content of chlorophyll and nitrogen in nasturtium officinale and mentha aquatica. total chlorophyll and nitrogen contents were adversely affected from pb2+ concentrations dose dependently at each ph. the macrophytes were adversely affected by ph 5.0 or more than 9.0. after 12-days pb2+ treatment, results showed that lead accumulation of macrophyte tissues ...200516459569
constituents in watercress: inhibitors of histamine release from rbl-2h3 cells induced by antigen stimulation.histamine release inhibitors in watercress (nasturtium officinale) were isolated using a monitoring system with antigen-stimulated rbl-2h3 cells. of the 15 compounds isolated, flavonols and megastigmanes significantly inhibited histamine release. two flavonols, 3-o-sophorosides of rhamnetin and rhamnazin, were new compounds. to investigate the inhibitory mechanism, the effects of rhamnetin, rhamnetin 3-o-sophoroside and an isolated megastigmane glucoside on the increase in the intracellular free ...199910746164
activity against drug resistant-tuberculosis strains of plants used in mexican traditional medicine to treat tuberculosis and other respiratory diseases.tuberculosis (tb) kills about 3 million people per year worldwide. furthermore, tb is an infectious disease associated with hiv patients, and there is a rise in multidrug-resistant tb (mdr-tb) cases around the world. there is a need for new anti-tb agents. the study evaluated the antimycobacterial activity of nine plants used in mexican traditional medicine to treat tuberculosis and other respiratory diseases. nasturtium officinale showed the best activity (mic = 100 microg/ml) against the sensi ...200817726732
watercress and amphipods potential chemical defense in a spring stream macrophyte.we investigated the potential role of defensive chemicals in the avoidance of watercress (nasturtium officinale) by the cooccurring amphipod,gammarus pseudolimnaeus at two spring brooks: carp creek, michigan and squabble brook, connecticut. we conducted observations and laboratory experiments on the consumption of watercress, the toxicity of damaged (frozen) watercress, and the toxicity of damage-released secondary chemicals. field-collected yellowed watercress typically lacked the bite and odor ...199024264910
decrease of plasma and urinary oxidative metabolites of acetaminophen after consumption of watercress by human investigate the effect of the consumption of watercress (nasturtium officinale r. br.), a cruciferous vegetable, on acetaminophen metabolism, the pharmacokinetics of acetaminophen and its metabolites were studied in a crossover trial of human volunteers. a single oral dose of acetaminophen (1 gm) was given 10 hours after ingestion of watercress homogenates (50 gm). in comparison with acetaminophen only, the ingestion of watercress resulted in a significant reduction in the area under the plas ...19968988067
antioxidant efficacy of nasturtium officinale extracts using various in vitro assay systems.nasturtium officinale r. br. (watercress), of the family brassicaceae, has been long used as a home remedy or a medicinal plant by the people of southeastern iran. the aim of this study was to investigate the antioxidant activity of n. officinale extract using various in vitro assay systems, including the ferric reducing antioxidant power and 2,2'-azinobis (3-ethylbenzothiazoline-6-sulfonate) assays, 1,1-diphenyl-2-picrylhydrazyl, hydrogen peroxide, nitric oxide radical scavenging, and ferrous i ...201021185544
nasturtium officinale reduces oxidative stress and enhances antioxidant capacity in hypercholesterolaemic rats.nasturtium officinale r. br. (brassicaceae) has been used as a home remedy by the people of south eastern (se) region of iran as a medicinal plant. this therapeutical application has been attributed to nasturtium officinale (n. officinale) antioxidant capacity which is mostly tested by means of cell-free assays: 2,2-diphenyl-1-picrylhydrazyl (dpph) and ferric reducing antioxidant power (frap). in addition, the antioxidant effect of n. officinale extract has been investigated in hypercholesterola ...200818325487
ontogenic variations of ascorbic acid and phenethyl isothiocyanate concentrations in watercress (nasturtium officinale leaves.watercress (nasturtium officinale is the richest source of glucosinolate nasturtiin, which on hydrolysis produces phenethyl isothiocyante (peitc). interest in growing watercress is stimulated since demonstration of the role of peitc in protection against cancers associated with tobacco specific carcinogens. twenty-one days old watercress seedlings were transplanted into growth chambers (16-h days/8-h nights of 25/22 degrees c and photosynthetic photon flux (ppf) of approximately 265 micro ...200312926905
a long-term copper exposure on freshwater ecosystem using lotic mesocosms: primary producer community responses.copper is commonly used as an algicide and plant herbicide in the aquatic environment. despite of its frequent application in rivers, ponds and lakes, few studies have been performed at the ecosystem level on primary producers' communities. a long-term lotic mesocosms study was carried on, in 20m long channels, under environmentally realistic concentrations of copper (0, 5, 25 and 75 microgl(-1)) delivered continuously for 18 months. results showed significant effects at the 25 and 75 microgl(-1 ...200717239970
folk phytotherapeutical plants from maratea area (basilicata, italy).field ethnobotanical survey was undertaken for the period of 2002-2003 in the tyrrhenian part of the basilicata region of southern italy. data of 56 species of plants belonging to 29 families where gathered through interviews; among the species, 47 are used in human therapy, 6 as insect repellents, 15 in veterinary medicine, 1 for its ichthyotoxic properties and 3 for magic therapeutic purposes. the most important findings in ethnomedicine relate to nasturtium officinale (renal colic, liver dise ...200515878246
[clinical and therapeutic behaviour of fasciola hepatica in a series of 87 patients].in the last few years, the incidence rate of fascioliosis caused by fasciola hepatica has increased worldwide. cuba is one of the countries that have reported sporadic cases and also some outbreaks of fasciolosis.201423444618
[presence of intestinal parasites in vegetables sold in the metropolitan area of são paulo-sp, brazil. ii--research on intestinal protozoans].vegetables in nature, commercially traded in the metropolitan area of s. paulo, brazil, were analyzed by means of the appropriate methodology with a view to discovering and identifying protozoan cysts of medical interest. the vegetables under study consisted of 50 samples of each of the varieties listed below: lettuce (lactuca sativa)-oily leaves and crisp-head varieties, endive (chicorium sp) and watercress (nasturtium officinale). results showed high rates of contamination in all the varieties ...19921342522
[presence of intestinal parasites in vegetables sold in the metropolitan region of são paulo, sp, brazil. i--search of helminths].vegetables in natura, commercially traded in the metropolitan area of s. paulo, were analysed by the appropriate methodology with a view to discovering an identifying the paths of transmission of enteroparasites of medical interest. the vegetables under study consisted of 50 samples of each variety listed below: lettuce (lactuca sativa)-oily leaves and crisphead varieties, endive (chicorium sp) and water-cress (nasturtium officinale). results showed high rates of contamination in all the vegetab ...19921342513
a comparative study of flavonoid compounds, vitamin c, and antioxidant properties of baby leaf brassicaceae species.a comparative study of antioxidant compounds, flavonoids and vitamin c, and also antioxidant activity was carried out in four species of brassicaceae vegetables used for salads: watercress ( nasturtium officinale r. br.), mizuna [ brassica rapa l. subsp. nipposinica (l.h. bailey) haneltand], wild rocket [ diplotaxis tenuifolia (l.) dc.], and salad rocket [ eruca vesicaria (l.) cav.]. the characterization of individual phenolic compounds by hplc-dad-ms/ms-esi in watercress and mizuna completes th ...200818321050
fasciola hepatica and paramphistomum daubneyi: field observations on the transport and outcome of floating metacercariae in running water.experimental investigations in eight open drainage ditches and furrows from central france were carried out to analyse the dispersal of floating metacercariae of two digenean species by running water and to determine the outcome of larvae which settled on nasturtium officinale (watercress). the frequencies of larvae found after their transport by water ranged from 33% to 49.7%, thus indicating that more than half of the metacercariae used in this experiment had fallen to the bottom of the water ...200415153290
in vitro growth-inhibitory effect of brazilian plants extracts against paenibacillus larvae and toxicity in bees.american foulbrood (afb) is a serious worldwide spreading disease in bees caused by paenibacillus larvae. plants extracts are known to decrease or inhibit the growth of these bacteria. the purpose of this study was to evaluate the antimicrobial activity of calendula. officinalis, cariniana domestica, and nasturtium officinale extracts against the p. larvae and to evaluate the toxicity of the extracts in bees. in vitro activity against p. larvae of the extracts was evaluated by micro dilution met ...201526062113
usefulness of different vascular plant species for passive biomonitoring of mediterranean rivers.choosing native vascular plants as nutrient and toxic element accumulators for passive biomonitoring of urban river quality is not an easy task in mediterranean rivers, due to the particular climate determining high variations in river hydrology. to identify potential biomonitors for this area, the roots of seven species (angelica sylvestris, apium nodiflorum, tradescantia fluminensis, nasturtium officinale, persicaria lapathifolia, arctium lappa, typha latifolia), growing in seven sites along t ...201627040538
investigation of antioxidant properties of nasturtium officinale (watercress) leaf extracts.the objective of this study was to examine the in vitro and in vivo antioxidative properties of aqueous and ethanolic extracts of the leaf of nasturtium officinale r. br. (watercress). extracts were evaluated for total antioxidant activity by ferric thiocyanate method, total reducing power by potassium ferricyanide reduction method, 1,1-diphenyl-2-picrylhydrazyl (dpph*) radical scavenging activities, superoxide anion radical scavenging activities in vitro and lipid peroxidation in vivo. those va ...200919719054
characterisation of phenolics in flor-essence--a compound herbal product and its contributing herbs.commercially available herbal mixture fe, a proprietary natural health product manufactured by flora manufacturing and distributing ltd (flora), is a unique north american traditional herbal product. fe is a chemically complex mixture of eight herbs and has not been subjected to phytochemical analysis.200919609882
influence of nitrogen and sulfur on biomass production and carotenoid and glucosinolate concentrations in watercress (nasturtium officinale r. br.).watercress (nasturtium officinale r. br.) is a perennial herb rich in the secondary metabolites of glucosinolates and carotenoids. 2-phenethyl isothiocyanate, the predominate isothiocyanate hydrolysis product in watercress, can reduce carcinogen activation through inhibition of phase i enzymes and induction of phase ii enzymes. sulfur (s) and nitrogen (n) have been shown to influence concentrations of both glucosinolates and carotenoids in a variety of vegetable crops. our research objectives we ...200718052091
effect of water content and temperature on seed longevity of seven brassicaceae species after 5 years of storage.maximising seed longevity is crucial for genetic resource preservation and longevity of orthodox seeds is determined by environmental conditions (water content and temperature). the effect of water content (down to 0.01 g·h₂o·g(-1) ) on seed viability was studied at different temperatures for a 5-year storage period in taxonomically related species. seeds of seven brassicaceae species (brassica repanda, eruca vesicaria, malcolmia littorea, moricandia arvensis, rorippa nasturtium-aquaticum, sinap ...201524804799
behavior of glucosinolates in pickling cruciferous vegetables.crucifer species, which include widely consumed vegetables, contain glucosinolates as secondary metabolites. cruciferous vegetables are consumed in japan in salt-preserved or pickled form as well as cooked and raw fresh vegetables. in this study, changes in contents of glucosinolates during the pickling process were investigated. 4-methylthio-3-butenyl glucosinolate, a major glucosinolate in the root of japanese radish, daikon (raphanus sativus l.), was detected in pickled products with a short ...200617147429
[fascioliasis: diagnosis, epidemiology and treatment].fascioliasis is a trematode, disease of liver and bile ducts of sheep, cattle, and other ruminants throughout the world that is caused by the fluke, fasciola hepatica. human infection has been reported in mexico, cuba, puerto rico, chile, peru, uruguay, brazil, argentina, the us, europe, eastern africa, japan and australia. the parasite's miracidium invades one of the various lymnaea water snail hosts. infection results from ingestion of encysted metacercariae attached to raw watercress (nasturt ...200315127652
suppression of diamondback moth (lepidoptera: plutellidae) with an entomopathogenic nematode (rhabditida: steinernematidae) and bacillus thuringiensis berliner.we tested the efficacy of the all strain of steinernema carpocapsae (weiser) against larvae of the diamondback moth, plutella xylostella (l.). in laboratory bioassays we found that (1) commercially formulated nematodes produced in vitro were as effective as nematodes produced in vivo, (2) resistance of p. xylostella to bacillus thuringiensis berliner subsp. kurstaki did not confer cross-resistance to nematodes, (3) mortality caused by nematodes was higher for early than late 3rd-instar p. xylost ...19989805498
effects of watercress consumption on metabolism of a tobacco-specific lung carcinogen in smokers.epidemiological studies indicate that vegetable consumption protects against lung cancer in humans, but the protective constituents have not been identified. phenethyl isothiocyanate (peitc), which is release upon chewing of watercress (nasturtium officinale), is a chemopreventive agent against lung cancer induced by the tobacco-specific lung carcinogen 4- (methylnitrosamino)-1-(3-pyridyl-1-butanone (nnk) in rats and mice. peitc inhibits the carcinogenicity of nnk by inhibiting its metabolic act ...19958634661
a comparison of risk and protective factors for colorectal cancer in the diet of new zealand maori and international standards new zealand (population 3.8 x 10(6)) has a high rate of colorectal cancer, with approximately 2000 new cases occurring and approximately 1000 deaths each year. but within the new zealand population, a lower incidence of colorectal cancer is reported for maori than for non-maori new zealanders (22.2 and 43.7 per 100,000 respectively). information from the new zealand national nutrition survey 1997 shows that in comparison to non-maori, maori eat more in total, eat more ...200212716290
effects of lead on the activities of antioxidant enzymes in watercress, nasturtium officinale r. br.the aim of the present study is to evaluate the oxidative effects of lead with increased concentrations by the determination of antioxidant enzyme activities (superoxide dismutase (sod), catalase (cat), glutathione reductase (gr), and ascorbate peroxidase (ap)) and lipid peroxidation levels in the stem and leaves of watercress (nasturtium officinale r. br.) which was exposed to lead acetate, pb (ch3cooh)2 regime with concentrations of 0, 50, 100, 200, 250, and 500 mg/l pb in a hydroponic culture ...201019967468
the watercress glucosinolate-myrosinase system: a feeding deterrent to caddisflies, snails and amphipods.watercress (nasturtium officinale) possesses the glucosinolate-myrosinase system. this system is regarded as a classic example of chemical defense for terrestrial crucifers. damage of watercress initiates myrosinase-mediated hydrolysis of phenylethyl glucosinolate to a toxic endproduct, phenylethyl isothiocyanate. in multiple choice tests, the amphipod gammarus pseudolimnaeus, the limnephilid caddisflies hesperophylax designatus and limnephilus sp., and the physid snail physella sp. all strongly ...199228311805
effect of hydroalcoholic extracts of nasturtium officinale leaves on lipid profile in high-fat diet rats.nasturtium officinale r. br. (brassicaceae) is used as a home remedy in iran as a cardioprotective agent without any scientific background. in this investigation an attempt was made to study the effect of nasturtium officinale hydroalcoholic extract (noe) on serum lipid profile which is closely associated with many cardiovascular diseases.200817980985
riparian plants on mine runoff in zimapan, hidalgo, mexico: useful for phytoremediation?dispersion and runoff of mine tailings have serious implications for human and ecosystem health in the surroundings of mines. water, soils and plants were sampled in transects perpendicular to the santiago stream in zimapan, hidalgo, which receives runoff sediments from two acidic and one alkaline mine tailing. concentrations of potentially toxic elements (pte) were measured in water, soils (rhizosphere and non-rhizosphere) and plants. using diethylenetriaminepentaacetic acid (dtpa) extractable ...201626939994
phytoaccumulation of heavy metals in natural vegetation at the municipal wastewater site in abbottabad, pakistan.heavy metal accumulation in crops and soils from wastewater irrigation poses a significant threat to the human health. a study was carried out to investigate the removal potential of heavy metals (hm) by native plant species, namely cannabis sativa l., chenopodium album l., datura stramonium l., sonchus asper l., amaranthus viridus l., oenothera rosea (lher), xanthium stramonium l., polygonum macalosa l., nasturtium officinale l. and conyza canadensis l. growing at the municipal wastewater site ...201526366840
germination and seedling growth of the water cress rorippa sp. exposed to the chelant [s,s]-edds.with the implementation of the new eu environmental framework directives, high tier risk assessments of chemicals will be increasingly needed. for high production chemicals, additional tests will complement the standard battery for aquatic toxicity assessments (daphnids, algae, and fish). in the context of a new chemical notification at the european union level, we have developed a seed germination and root elongation toxicity test with the freshwater aquatic plant rorippa nasturtium-aquaticum ( ...200616530249
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