"neural capacity" in mimosa pudica: a review. 1976135556
[mimosa pudica adenosine triphosphatase].the morphological structure (pulvinus p1, p2 and p3) directly involved in the seismonastic movements of the mimosa pudica leaf have been used to isolate: 1) "soluble" atpase, loosely bound to pulvinus structures; 2) ca, mg-dependent atpase, which is tightly bound to pulvinus structures and is extracted by a saline solution of high ionic strength, used to isolate actomyosin from muscles and non-muscle motile cells; 3) atpase bound to the pulvinus membrane structures, which is solubilized by the d ...1978148923
antimicrobial principles in mimosa hamata. 1979521821
notes of a biology-watcher. the mimosa girdler. 1979583063
studies on atmospheric pollens in the philippines.the predominant pollen in the philippines is the grass pollen, followed by mimosa, moraceae, cyperaceae, lower vascular plants spores, amaranth, coconut, tiliaceae, pinus, compositae and alnus (in decreasing order of significance). the atmospheric pollen pollution in quezon city is heavy in november, december and january; in los banos during january, february, march, april, june and november; and in baguio city during february, march, april and may. compared to the density of pollution in these ...1978629427
bacteria within ovules and seeds.surface-sterilized ovules and seeds of 27 species of plants were cultured in the water of syneresis of a nutrient medium low in agar content. bacteria were obtained from 30% of the ovules, 15% of the seeds of herbaceous plants, 16% of the seeds of woody plants, 5.4% of the overwintered noncereal seeds, and 13.5% of overwintered cereal seeds. in no instance did every ovule or seed of a plant species contain bacteria. no bacteria were obtained from the hard, waxy seeds of mimosa or yellowwood. the ...1976984839
triterpenoid glycosides from the bark of mimosa tenuiflora.two new saponins were isolated from mimosa tenuiflora and their structures established as 3-o-[alpha-l-rhamnopyranosyl(1----2)-beta-d-glucopyranosyl-(1----3]-(alp ha-l- arabinopyranosyl-(1----4]-beta-d-xylopyranosyl-(1----2)]-[beta-d- xylopyranosyl-(1----4)]-beta-d-glucopyranosyl)-28-o-alpha-l-rhamnopyrano syl oleanolic acid and 3-o-[alpha-l-rhamnopyranosyl-(1----2)-beta-d-glucopyranosyl-(1----3]-(al pha- l-arabinopyranosyl-(1----4]beta-d-xylopyranosyl-(1----2)]-[beta-d- xylopyranosyl-(1----4)]- ...19911367651
activation and desensitization of ampa/kainate receptors by novel derivatives of willardiine.willardiine [(s)-1-(2-amino-2-carboxyethyl)pyrimidine-2,4-dione] is a naturally occurring heterocyclic excitatory amino acid present in the seeds of acacia and mimosa. a series of 5-substituted willardiines were synthesized in single enantiomeric forms and tested for activity at ampa/kainate receptors, using whole-cell recording from mouse embryonic hippocampal neurons. the (s)- but not (r)-isomers of willardiine and 5-bromowillardiine were potent agonists, producing rapidly but incompletely des ...19921371315
the use of tannin from chestnut (castanea vesca).after mimosa and quebracho extracts, chestnut extract is the third most important vegetable tannin used for leather production. it is produced only in europe on the northern side of the mediterranean sea. the extract is prepared by hot water extraction of the bark and timber, followed by spray-drying of the solution. analysis shows that there are insignificant variations in extract quality between batches, so the extract can be used with modern automated leather production systems. the extract c ...19921417692
sulfhydryl groups of mimosa pudica tubulin implicated in colchicine binding and polymerization in vitro.the important characteristic of novel mimosa pudica tubulin is its ability to bind colchicine only when dithiothreitol is included in the isolation buffer, indicating the involvement of sulfhydryl groups in colchicine binding. modification of sulfhydryl groups by a sulfhydryl modifying agent also affects the normal assembly of tubulin into microtubules, as revealed by electron microscopic and spectrophotometric studies. the number of free sulfhydryl groups present in tubulin protein responsible ...19921567190
when the mimosa blooms. 19921570106
[cicatricial, antibacterial and antimycotic effects of tepescohuite in experimental animals].the cicatricial and antibacterial effects of the sterile powder of the barks of tepescohuite (mimosa tenuiflora), 2% mupirocin ointment, and 0.9% saline were compared. the experiment was performed in rabbits with chemically induced burns clinically, histopathologically, bacteriologically, and mycologically controlled. no statistically significant difference was found among the three treatment modalities. due to the potentially hepatotoxic effects and low therapeutic efficacy of tepescohuite it s ...19911818366
effects of mimosa tenuiflora bark extracts on wi38 and kb human cells in culture.the effects of three extracts from barks of mimosa tenuiflora (willd) poir, leguminosae, on the growth rate of two human cell lines were investigated. the plant material was extracted with petroleum ether, ethylacetate and butanol, and the obtained products were evaluated in their ability to modify growth of wi38 normal embryonic fibroblasts, and kb cells from a nasopharyngeal carcinoma in tissue culture conditions. the ethylacetate and butanol extracts produced growth rate inhibition with a dif ...19911819991
pollen allergy to mimosa (acacia floribunda) in a mediterranean area: an occupational disease.we have described respiratory allergy to the pollens of mimosa (acacia floribunda) in some mediterranean areas of italy and france. the incidence of sensitivity is only 1.2% in a population of atopics but 31% in an "at risk" population of floriculturists. it seems, therefore, that the pollen of acacia floribunda, although heavy and amphiphilous, is potentially allergenic for subjects who are in close proximity.19912006774
inactivation of strongyloides stercoralis filariform larvae in vitro by six jamaican plant extracts and three commercial vitro bioassay of (a) aqueous methanol extracts (ame) of the green leaves of mimosa (mimosa pudica), love weed (cuscuta americana), vervine (stachytarpheta jamaicensis), chicken weed (salvia serotina) and breadfruit (artocarpus altilis); (b) methanol-water fraction (mwf) of breadfruit leaves, and (c) commercially available drugs albendazole, thiabendazole and levamisole were assayed for nematode inactivating potential, using filariform larvae of strongyloides stercoralis. test larvae were obt ...19902082565
[pharmacological properties in vitro of various extracts of mimosa tenuiflora (tepescohuite)].the in vitro biological effects of polar extracts of mimosa tenuiflora (willd.) poir. trunk bark (tepescohuite) were studied. ethyl acetate extract, with a high tannin content, inhibited the growth of different microorganisms. alkaloids were particularly abundant in the butanol extract and this product strongly inhibited the intestinal peristalsis and produced contraction of uterine and gastric strips of rat and guinea pig. saponins were detected in butanol and methanol extracts producing hemoly ...19902103705
[effect produced by the alkaloid fraction of mimosa tenuiflora (tepescohuite) on the peristaltic reflex of the guinea pig ileum].an alkaloidal fraction was obtained from mimosa tenuiflora (willd.) poir (tepescohuite) trunk bark. the product contained mainly an indolealkylamine and three minor alkaloids. this fraction inhibited the peristaltic reflex in the guinea-pig isolated ileum in vitro.19902103706
n,n-dimethyltryptamine alkaloid in mimosa tenuiflora bark (tepescohuite). 19902103707
a novel tubulin from mimosa pudica. purification and characterization.from mimosa pudica fresh leaves and pulvinar callus cells, we have purified tubulin protein using an anion-exchange resin, deae-sephadex a-50, followed by ammonium sulfate fractionation and sephadex g-200 gel filtration. the purified protein consisted of alpha and beta subunits and trace quantities of other proteins. when analysed by sodium dodecyl sulfate/polyacrylamide gel electrophoresis at ph 8.8, both alpha and beta subunits of tubulin almost comigrated with their counterparts from goat bra ...19902209590
the onchocerciasis focus at kinsuka/kinshasa (republic of zaire) in 1985. i. entomological aspect.the entomological aspect of the onchocerciasis focus at kinsuka/kinshasa has not been studied since vector control was carried out in 1948. as in 1940, larvae of simulium damnosum s.l. are located in the arm of the zaire river flowing between mimosa island and the zairian bank. they are, however, scarce. cytotaxonomic studies showed that the s. squamosum group was the only member of the s. damnosum complex present in the region of kinshasa. physico-chemical analysis of the water at breeding site ...19902260901
biochemical mechanisms and effects of mimosa pudica (linn) on experimental urolithiasis in rats.urolithiasis, following implantation of zn discs in urinary bladder (foreign body insertion technique), was examined in albino rats of either sex. marked variation was observed between sex, regarding the formation of bladder stones. ethylene glycol (1%) mixed in drinking water for 4 weeks, was unable to augment zn disc-induced stone deposition. chemical nature of stones was identified as of magnesium ammonium phosphate type. neither urinary ph nor infection in the urinary bladder/tract affected ...19902365419
experimental evaluation of mimosa tenuiflora (willd.) poir. (tepescohuite) i. screening of the antimicrobial properties of bark extracts.mimosa tenuiflora (willd.) poir, is a tree from the south areas of mexico. this bark is popularly used as remedy to treat different skin lesions. the present study demonstrates the in vitro antimicrobial properties of the water and ethanolic extracts prepared with the dried and powdered bark of this plant. a clear inhibition growth effect was observed in all the gram positive and gram negative organisms, yeasts and dermatophytes used.19892764672
voltage-activated, delayed rectifier k+ current from pulvinar protoplasts of mimosa pudica. 19892780240
kukulkanins a and b, new chalcones from mimosa tenuefolia.two new methoxychalcones, kukulkanins a (2',4'-dihydroxy-3',4-dimethoxychalcone) and b (2',4',4-trihydroxy-3'-methoxychalcone), were isolated by flash chromatography of extracts of small branches of mimosa tenuefolia. the compounds were identified using ir, nmr, uv, and mass spectroscopy, and their structures were confirmed by x-ray crystallography.19892809610
actin-like protein from mimosa pudica l. 19872968302
movement of water in conjunction with plant movement visualized by nmr imaging.the water distribution in the pulvinus of mimosa can be visualized by an nmr imaging technique. after stimulation of a mimosa plant, water in the lower half of the main pulvinus disappeared, the water previously contained in this area seeming to be transferred to the upper half of the main pulvinus. movement of the water in conjunction with mimosa movement was visualized sequentially by a non-invasive nmr imaging procedure.19883220831
[atpase of mimosa pudica l]. 19664225817
[ultrasonic extraction of a structural protein possessing mg-atpase activity from the leaf cushions of mimosa pudica]. 19694250825
an atpase in sensitive plant mimosa pudica. i. purification and characterization. 19724258113
[fractionation of apyrase from mimosa pudica leaves into adpase and mn++ activated atpase]. 19664299365
[membrane structure in plants: effect of xenon on the mimosa reaction]. 19684387209
drugs affecting sensitivity to stimuli in the plant mimosa and the protozoan spirostomum. 19724655174
ribonuclease activity during induction of cold hardiness in mimosa epicotyl and hypocotyl tissues. 19734723506
behavioral plasticity in the sensitive plant, mimosa. 19725043704
biochemical study on mimosine. 3. a comparative study on the activities of metal containing enzymes in b6-deficient and mimosa fed rats. 19665221973
changes in ribonucleic acid fractions during maturation of mimosa epicotyl rna and dna of mimosa epicotyl tissues were extracted and the rna fractionated into specific soluble rnas (srnas) at different times during late germination. epicotyls collected at each time contained qualitatively comparable meristematic and developing tissues, while mature tissues increased. quantitative ratios of total rna to dna and total srnas to approximated ribosomal rna (rrna) varied consistently during development. terminal nucleosides of srna did not vary in any consistent patter ...19695774174
[functional relation of atp to the movement of mimosa pudica leaves]. 19655857069
precursors of mimosine in mimosa pudica. 19655864482
mechanisms of movement in mimosa pudica--a pharmacological approach. 19806245010
purification & characterization of a nucleoside triphosphatase from mimosa pudica. 19806265345
calcium-sensitivity of the plasmalemmal delayed rectifier potassium current suggests that calcium influx in pulvinar protoplasts from mimosa pudica l. can be revealed by hyperpolarization.isolated protoplasts from pulvinar motor cells of mimosa pudica were studied using conventional whole-cell patch clamp techniques. with internal solutions weakly buffered for ca2+ (0.2 mm egta), a rundown of the outward delayed rectifier k+ current was induced by hyperpolarizing the holding potential, and this effect was strongly promoted by high external ca2+ concentrations. this rundown could be reversed by coming back to less hyperpolarized holding potentials or by lowering the external [ca2+ ...19957473689
vibriocidal activities of some local herbs.four of the seven tested medicinal plants exhibited antimicrobial activity against vibrio cholerae. these 7 plants are: ficus capensis, mitragyna stipulosa, entada africana, piliostigma reticulatum, terminalia avicennoides, mimosa pudica, and lannea acida. of them terminalia avicennoides showed higher antimocrobial activity than others. potentials of these herbs in the control of cholera need to be determined.19957594314
triterpenoid saponins from mimosa pigra.two novel triterpene glycosides have been isolated from mimosa pigra. the aglycone of these two compounds was identified as machaerinic acid by 1h- and 13c-nmr spectroscopy and by comparison with an authentic sample. this aglycone is substituted at position c-3 by an identical oligosaccharide chain in these glycosides, and at position c-21 by either a z/e-methoxycinnamic [1] unit or an e-cinnamic acid [2] unit.19957595593
plasmalemmal, voltage-dependent ionic currents from excitable pulvinar motor cells of mimosa pudica.plasmalemmal ionic currents from excitable motor cells of the primary pulvinus of mimosa pudica were investigated by patch-clamp techniques. in almost all of the enzymatically isolated protoplasts, a delayed rectifier potassium current was activated by depolarization, while no currents were detected upon hyperpolarization. this sustained outward current was reversibly blocked by ba and tea and serves to repolarize the membrane potential. outward single channel currents that very likely underly t ...19937684082
survival of cultured plant cells grafted into the subcutaneous tissue of rats (preliminary report).to evaluate the survival of plant tissue in an animal environment, cultured calli from a mexican medicinal plant (mimosa tenuiflora poir.) were transplanted under sterile conditions into the subcutaneous tissue of rats. microscopic studies of grafted areas were carried out at the 30th, 60th and 120th days after transplantation. histological evidence of plant graft survival was found in specimens of all groups. during the first month of subcutaneous grafting a moderate inflammatory reaction aroun ...19957711454
galactomannans from brazilian seeds: characterization of the oligosaccharides produced by mild acid hydrolysis.galactomannans with man:gal ratios ranging from 1.1:1 to 3:1, obtained from the seeds of mimosa scabrella, stryphnodendron barbatiman, schizolobium parahybum and schizolobium amazonicum, were submitted to mild acid hydrolysis. the products were fractionated by gel permeation chromatography on biogel p2 yielding fractions with degrees of polymerization (dp) of 1 to 6. those with dp 2 to 6 from each species were analysed by ion-exchange high-performance liquid chromatography and characterized by 1 ...19957772557
medicinal plants from riau province, sumatra, indonesia. part 1: hundred and fourteen species of flowering plants, claimed to have medicinal uses, were recorded from a previously uninvestigated area of sumatra. of the specimens, which belonged to 51 families, 50% were used to combat fever, 33% for diarrhoea and 31% for other gastrointestinal problems. external applications were often used to treat internal conditions, particularly fever. species new to the ethnomedical literature are garcinia parvifolia, scleria purpurescens, galearia filiformis, litsea e ...19957776664
mimosa: a functional model of the management of medical images.the concept of picture archiving and communication system (pacs) appeared in 1982. twelve years later most pacs prototypes still do not satisfy the medical community requirements: too much emphasis has been put on technical solutions and little effort devoted to the management of images itself. a common approach to this problem is needed more than ever to allow cost-effective systems to be developed. modelling is a way to reach this objective, and the mimosa topic within the aim/eurlpacs project ...19947799695
hypersensitivity to pollen allergens on the adriatic central south croatia, i.e., the adriatic coast with the city of split at the center, year-long pollen concentrations in the air were determined for typical local plants, and the area's plant pollination calendar was established. high concentrations of parietaria officinalis pollen dominated during the year (up to 20% from april to june). pollens of pistacia lentiscus, olea europaea, pinus halepensis, juniperus oxycedrus, mimosa and cistus monspeliensis were found in lower concentrations and ...19947921334
[immobilization of a sensitive plant, mimosa pudica l., by volatile anesthetics].the disappearance of thigmonastic mobility of a sensitive plant, mimosa pudica l., caused by volatile anesthetic agents such as methoxyflurane, chloroform, halothane, enflurane or sevoflurane revealed that the response to anesthetic agents in plants maybe similar to that in animals. in terms of reversible anesthesia, animals seem to equal plants in order of potency of anesthetics, and the minimum immobilizing concentration (mic; %) in the plant shows a good correlation with mac in the human (mic ...19938366560
cold stability of microtubules of mimosa pudica.the unique property of mimosa pudica microtubules is that they are cold stable in nature. they do not dissociate at 0 degrees c unlike animal microtubules. no other protein fractions of m. pudica are responsible for the cold-resistance property of these microtubules. it seems that tubulin, itself, has an intrinsic cold resistance which makes it unique compared with animal tubulin. moreover, m. pudica microtubule makes cold-sensitive goat brain microtubule cold-resistant when used in greater than ...19938485459
pharmacognosy of mimosa tenuiflora (willd.) poiret.a chemical investigation of the bark of mimosa tenuiflora (willd.) poiret, performed in our laboratory, allowed the isolation and identification of three new triterpenoid saponins (mimonosides a, b and c), three steroid saponins (3-o-beta-d-glucopyranosyl campesterol, 3-o-beta-d-glucopyranosyl stigmasterol and 3-o-beta-d-glucopyranosyl beta-sitosterol) together with lupeol, campesterol, stigmasterol and beta-sitosterol. the three new triterpenoid saponins were subjected to in vitro biological te ...19938510463
mimosine arrests the cell cycle after cells enter s-phase.l-mimosine (beta-n-[3-hydroxy-4-pyridone]-alpha-aminopropionic acid)--a rare amino acid derived from mimosa and leucaena plants--arrests cells reversibly late during g1 phase or at the beginning of s-phase. if mimosine were to arrest cells immediately before s-phase, it would provide a superb tool for the investigation of the initiation of dna synthesis. therefore, we reexamined the point of action of mimosine. mitotic hela cells were released into 200 microm mimosine and grown for approximately ...19968598214
[effect of aging on distortion product otoacoustic emissions].the effect of aging on distortion product otoacoustic emissions (dpoae) was investigated in 58 ears of 32 volunteers with normal hearing dpoae levels to tones with a fixed frequency ratio (f2/f1 = 1.2) were measured with the cubdis system (mimosa acoustics, usa). age dependency of dpoae level was clearly observed both in frequency plots (dp-gram) and input-output functions. in elderly persons, dpoae levels for higher frequency primaries were significantly lower than in younger persons, when no r ...19968776970
mimosine blocks cell cycle progression by chelating iron in asynchronous human breast cancer cells.mimosine is a toxic nonprotein amino acid that is a major constituent of the tropical legumes leucaena and mimosa. mimosine has been shown to cause acute and chronic toxicosis in livestock fed from forage containing these plants. recently, mimosine has been demonstrated to reversibly block cell cycle progression in mammalian cells in culture. in this study, we compared the effects of mimosine to desferrioxamine (dfo), a well-characterized iron chelator, and found that both chemicals similarly al ...19968806853
galactomannan from the seeds of mimosa scabrella: a scale-up view of the wide industrial applications of galactomannans as a thickening agent, those of mimosa scabrella (bracatinga), a leguminous tree abundant in southern brazil, are under investigation. seeds of bracatinga were processed on a pilot plant scale in order to obtain its galactomannan. the process consisted of successive milling, enzyme inactivation, aqueous extraction, precipitation of polysaccharide, and drying and milling. the product was obtained in 20% yield, with characteristics simi ...19979283028
the enzyme involved in sulfation of the turgorin, gallic acid 4-o-(beta-d-glucopyranosyl-6'-sulfate) is pulvini-localized in mimosa pudica.a sulfotransferase (st) which catalyzes the transfer of sulfate from 3'-phosphoadenosine 5'-phosphosulfate (paps) to gallic acid glucoside was characterized from microsomal preparations of mimosa pudica. the product of the reaction was found to co-elute on hplc with the periodic leaf movement factor 1 (plmf-1)(gallic acid beta-d-gluco-pyranosyl-6'-sulfate). the distribution of the enzyme activity was restricted to plasma membrane preparations from primary, secondary and tertiary pulvini. the m. ...19979375396
image management in pacs: how should they be decomposed into well-defined and interoperable industrial products?we consider that no consensus currently exists on how pacs should be decomposed into well-defined and interoperable industrial products. we believe that this lack of consensus hampers the development of multi-vendor pacs and makes the standardization process slower. this paper tries to understand the ins and outs of these choices. to realize this we have used the mimosa functional model (euripacs project) as a reference model. we have then delineated the borders between several possible industri ...19979509402
kainate receptors exhibit differential sensitivities to (s)-5-iodowillardiine.characterization of the role of kainate receptors in excitatory synaptic transmission has been hampered by a lack of subtype-selective pharmacological agents. (s)-5-iodowillardiine (iw), an analog of willardiine [(s)-1-(2-amino-2-carboxyethyl)pyrimidine-2,4-dione], a heterocyclic amino acid found in acacia and mimosa seeds, was previously shown to be highly potent on native kainate receptors in dorsal root ganglion neurons. we examined the responses evoked by iw from recombinant homomeric and he ...19989584222
standardization in the field of medical image management: the contribution of the mimosa model.this paper deals with the development of standards in the field of medical imaging and picture archiving and communication systems (pacs's), and notably concerning the interworking between pacs's and hospital information systems (his). it explains, in detail, how a conceptual model of the management of medical images, such as the medical image management in an open system architecture (mimosa) model, can contribute to the development of standards for medical image management and pacs's. this con ...19989617908
mimosa pudica apyrase requires polysaccharide and ca2+ for the activity.mimosa pudica linn leaves with pulvini contain unique isoforms (i and ii) of apyrase enzyme (ec the activity of isoform i depends on divalent cation mn2+. this isoform is associated noncovalently with the polysaccharide, containing mainly of galactose and arabinose sugars. the apparent molecular mass of these 2 isoforms are 36 and 34 kd respectively. the association of the polysaccharide with the isoform i has been found to be ca2+ dependent which is endogenously present in this isofor ...19989788742
clothing dye dermatitis masquerading as (coexisting) mimosa allergy. 19999928804
an apyrase from mimosa pudica contains n5,n10-methenyl tetrahydrofolate and is stimulated by apyrase (ntp/ndpase) implicated in the response of mimosa pudica to stimuli, such as touch, has been cloned, sequenced and expressed in escherichia coli. while purifying and characterizing this enzyme, it was observed that a chromophore is associated with it, having absorption in the ultraviolet-a/blue region of the spectrum. the absorbance maximum of the chromophore, purified from the enzyme complex by gel filtration and hplc, is around 350 nm. the chromophore has been identified as n5,n10-m ...19989990319
inhalational and local anesthetics reduce tactile and thermal responses in mimosa reaction to a variety of stimuli, the sensitive plant mimosa pudica closes its leaflets and drops its stems. the objective was to investigate the effects of anaesthetics on the reaction of mimosa pudica to a variety of stimuli.199910210057
rhizobium etli bv. mimosae, a novel biovar isolated from mimosa affinis.fifty rhizobial isolates from root nodules of mimosa affinis, a small leguminous plant native to mexico, were identified as rhizobium etli on the basis of the results of pcr-rflp and rflp analyses of small-subunit rrna genes, multilocus enzyme electrophoresis and dna-dna homology. they are, however, a restricted group of lineages with low genetic diversity within the species. the isolates from m. affinis differed-from the r. etli strains that orginated from bean plants (phaseolus vulgaris) in th ...199910555329
role of galactomannan composition on the binary gel formation with xanthan.the influence of the galactomannan characteristic ratios (m/g) on the temperature of gelation (tg) and the gel strength of mixtures of galactomannan with xanthan is reported. two galactomannans were investigated: one highly substituted from the seeds of mimosa scabrella (m/g = 11), and the other, less substituted, from the endosperm of schizolobium parahybae, with (m/g = 30) [ganter jlms, zawadzki-baggio sf, leitner sc, sierakowski mr, reicher f. j carbohydr chem 1993;12:753]. the xanthan:galact ...199910569283
antioxidant and free radical scavenging activities in extracts from medicinal trees used in the 'caatinga' region in northeastern brazil.the in vitro antioxidant and free radical scavenging properties of bark extracts of anadenanthera macrocarpa brenan (fabaceae), astronium urundeuva engl. (anacardiaceae), mimosa verrucosa benth. (fabaceae) and sideroxylon obtusifolium t.d. penn. (sapotaceae), four trees used as anti-inflammatory agents in the brazilian state of bahia, were studied using different bioassays. the total reactive antioxidant potential (trap) of the aqueous and methanolic extracts was determined by monitoring the int ...199910616962
chemistry and biology of plant leaf movements.the leaves of mimosa pudica l. are well known for their rapid movement when touched. recently, we were able to isolate an excitatory substance in small quantities from this plant, which consists of three different components (potassium l-malate, magnesium trans-aconitate, and dimethylammonium salt). many plants close their leaves in the evening, as if to sleep, and open them early in the morning (nyctinastic leaf movement). this circadian rhythm is known to be controlled by the biological clock ...200010777626
potassium-efflux channels in extensor and flexor cells of the motor organ of samanea saman are not identical. effects of cytosolic calcium.leaflet movements in the mimosa-family tree samanea saman stem from coordinated volume changes of cells in the leaf motor organs in the adaxial and abaxial motor cells ("flexors" and "extensors"). shrinking, initiated by dissimilar light signals in extensors and in flexors, depends in both cell types on k(+) efflux via depolarization-dependent potassium (k(d)) channels. to compare between flexor and extensor k(d) channels and to test for a possible interaction of these channels with the ca(2+)-m ...200011027738
phylogeny of the bodonid flagellates (kinetoplastida) based on small-subunit rrna gene sequences.the phylogeny of kinetoplastid flagellates was investigated by determining the sequences of the small-subunit (18s) rrna from bodo designis, bodo saltans k, bodo saltans p, bodo sorokini, bodo sp. (cf. uncinatus), cruzella marina, cryptobia helicis, dimastigella mimosa and parabodo nitrophilus and analysing these data together with several previously obtained sequences. the root of the kinetoplastid tree was tentatively determined to be attached to the branch of b. designis and/or cruzella marin ...200011034508
potassium-efflux channels in extensor and flexor cells of the motor organ of samanea saman are not identical. effects of cytosolic calcium.leaflet movements in the mimosa-family tree samanea saman stem from coordinated volume changes of cells in the leaf motor organs in the adaxial and abaxial motor cells ("flexors" and "extensors"). shrinking, initiated by dissimilar light signals in extensors and in flexors, depends in both cell types on k(+) efflux via depolarization-dependent potassium (k(d)) channels. to compare between flexor and extensor k(d) channels and to test for a possible interaction of these channels with the ca(2+)-m ...200111161068
nitrogen, carbon and phosphorus mineralization in soils from semi-arid highlands of central mexico amended with tannery sludge.tannery sludge contains valuable nutrients and could be used as a fertilizer to pioneering vegetation in heavily eroded soils of the semi-arid highlands of central mexico. soil collected under and outside the canopy of mesquite (prosopis laeviginata), huizache (acacia tortuoso) and catclaw (mimosa biuncifera), and cultivated with maize (zea mays) and beans (phaesolus vulgaris) was amended with 1.5 g tannery sludge kg-1 soil or 210 kg dry sludge ha-1 or left unamended. amended and unamended soils ...200111272018
neutralisation of lethality, myotoxicity and toxic enzymes of naja kaouthia venom by mimosa pudica root extracts.aqueous and alcoholic extracts of dried roots of mimosa pudica were tested for their inhibitory activity on lethality, myotoxicity and toxic enzymes of naja kaouthia venom. the aqueous extract, particularly the normal water extract, displayed a significant inhibitory effect on the lethality, myotoxicity and tested enzyme activities of venom compared with alcoholic extracts. the present finding suggests that aqueous extracts of m. pudica root possess compound(s), which inhibit the activity of cob ...200111282444
polykinetoplast dna structure in dimastigella trypaniformis and dimastigella mimosa (kinetoplastida). 200111295187
pollen spectrum of honey of "uruçu" bee (melipona scutellaris latreille, 1811).in spite of the importance of the "uruçu" bee as honey producer of excellent quality, as well, potential pollinator both in agricultural and natural ecosystems, mainly in north-eastern brazil, just some information is found in literature about sources that such bees utilize to collect nectar and pollen. the identification of the plants visited by melipona scutellaris was accomplished with base on the analysis of pollen types found in the honey samples collected every two months, from march 1997 ...200111340463
antimicrobial activity of fabaceae species used in yucatan traditional medicine.the methanol and water extracts of six fabaceae species, traditionally used in mayan medicine for the treatment of diarrhoea and eye infections, were phytochemically screened and tested for in vitro antimicrobial activity. four species showed activity against gram positive bacteria, five exhibited some activity against candida albicans, two exhibited activity against aspergillus niger and only one, mimosa pigra, inhibited growth of pseudomonas aeruginosa. none of the extracts was active against ...200011449511
the gelsolin/fragmin family protein identified in the higher plant mimosa pudica.mimosa pudica l. rapidly closes its leaves and bends its petioles downward when mechanically stimulated. it has been suggested that the actin cytoskeleton is involved in the bending motion since both cytochalasin b and phalloidin inhibit the motion. in order to clarify the mechanism by which the actin cytoskeleton functions in the motion, we attempted to find actin-modulating proteins in the m. pudica plant by dnase i-affinity column chromatography. the egta-eluate from the dnase i column contai ...200111481041
[description, distribution, anatomy, chemical composition and uses of mimosa tenuiflora(fabaceae-mimosoideae) in mexico].because of some catastrophic events which occurred in mexico during the 1980 decade, the utilization of "tepescohuite" bark against skin wounds and burns was popularized. the media manipulated the lack of available information about its medical properties and gave erroneous information to the society propagating a lot of myths. therefore, the aim of this paper is to determine its taxonomic identity and to study the distribution, bark and wood anatomy of this species, and to determine its actual ...200011487939
ralstonia taiwanensis sp. nov., isolated from root nodules of mimosa species and sputum of a cystic fibrosis patient.a polyphasic taxonomic study, including 16s rdna sequence analysis, dna-dna hybridizations, dna base ratio determinations, amplified 165 rdna restriction analysis, whole-cell protein analyses and extensive biochemical characterization, was conducted to clarify the relationships of eight isolates from root nodules of mimosa species and one isolate from sputum of a cystic fibrosis patient. all nine isolates were classified as a novel ralstonia species, for which the name ralstonia taiwanensis sp. ...200111594603
effect of sulphur inoculated with thiobacillus on soil salinity and growth of tropical tree legumes.a greenhouse experiment was carried out with the objective of evaluating the effects of the elementary sulphur inoculated with thiobacillus, compared with gypsum, in the amendment of a alluvial sodic saline soil from the brazilian semiarid region, irrigated with saline water and grown with the tropical legumes leucena and mimosa. the treatments consisted of levels of sulphur (0; 300 and 600 kg/ha) and gypsum (1,200 and 2,400 kg/ha), irrigation using different waters containing the salts nahco3, ...200211710345
effect of mimosa pudica root powder on oestrous cycle and ovulation in cycling female albino rat, rattus norvegicus.mimosa pudica root powder (150 mg/kg body weight) when administered intragastrically, altered the oestrous cycle pattern in female rattus norvegicus. nucleated and cornified cells were absent in all rats. the smear was characterized by leucocytes only, as in dioestrus, which persisted for 2 weeks. there was a significant reduction in the number of normal ova in rats treated with the root powder compared with the control rats, and a significant increase in the number of degenerated ova.200211933127
mimosa pudica may possess antidepressant actions in the mexico, aqueous extracts from dried leaves of mimosa puolica are employed to alleviate depression. in this study, the behavioral actions of aqueous extracts of m. pudica at various concentrations were tested. rats having received saline (0.9%; 0.30 ml; i.p.), clomipramine, desipramine or several dosages of aqueous extracts from m. pudica (ml = 2.0 mg/kg; m2 = 4.0 mg/kg; m3 = 6.0 mg/kg; m4 = 8.0 mg/kg) during a 30-day period were submitted to the forced swimming test and to the test for differ ...199911962537
profiling and screening analysis of 27 aromatic amino acids by capillary electrophoresis in dual efficient capillary electrophoretic (ce) profiling and screening system based on dual modes of capillary zone electrophoresis (cze) and micellar electrokinetic capillary chromatography (mekc) was developed for the simultaneous determination of 23 nonprotein amino acids (npaas) and 4 protein amino acids with aromatic moiety. it involves separation by an uncoated fused-silica capillary under phosphoric acid buffer in cze mode and by another uncoated fused-silica capillary under neutral sodium d ...200211981855
the potential of thai indigenous plant species for the phytoremediation of arsenic contaminated assess the potential of the native plant species for phytoremediation, plant and soil samples were collected from two areas in thailand that have histories of arsenic pollution from mine tailings. the areas were the ron phibun district (nakorn si thammarat province) and bannang sata district (yala province), and samples were taken in 1998 and 1999 and analysed for total arsenic by atomic absorption spectrophotometry. arsenic concentrations in soil ranged from 21 to 14,000 microg g(-1) in ron ...200212009144
[no remedy for aids?].vila mimosa, a site of street prostitution in rio de janeiro since the 1930s, is the place of work for over 2000 prostitution who charge an average of $3-4 per client. several years ago the association of prostitutes of rio de janeiro (aprj) was founded by eunice coelho reis. aprj membership has increased steadily and its list of accomplishments is impressive. a state hospital performs free medical examinations of aprj members, and the brazilian family planning association bemfam provides 180, ...199312178192
distribution and activity of the plasma membrane h+-atpase in mimosa pudica l. in relation to ionic fluxes and leaf movements.plasma membrane h+-atpase was immunolocalized in several cell types of the sensitive plant mimosa pudica l., and transmembrane potentials were measured on cortical cells. in comparison with the nonspecialized cortical cells of the petiole or stem, the proton pump was highly expressed in motor cells. these immunological data are in close agreement with electrophysiological data, because the active component of the transmembrane potential was low in the nonspecialized cortical cells and high in mo ...199712223640
increased expression of vacuolar aquaporin and h+-atpase related to motor cell function in mimosa pudica l.mature motor cells of mimosa pudica that exhibit large and rapid turgor variations in response to external stimuli are characterized by two distinct types of vacuoles, one containing large amounts of tannins (tannin vacuole) and one without tannins (colloidal or aqueous vacuole). in these highly specialized cells we measured the abundance of two tonoplast proteins, a putative water-channel protein (aquaporin belonging to the [gamma]-tips [tonoplast intrinsic proteins]) and the catalytic a-subuni ...199712223745
hyperglycemic effect of leaves of mimosa pudica linn.ethanolic extract of mimosa pudica leaves given by oral route to mice at a dose of 250 mg/kg showed a significant hyperglycemic effect.200212234583
folklore information from assam for family planning and birth control.the author collected folklore information on herbal treatments to control fertility from different parts of assam, india. temporary methods of birth control include cissampelos pareira l. in combination with piper nigrum l., root of mimosa pudica l. and hibiscus rosa-sinensis l. plants used for permanent sterilization include plumbago zeylanica l., heliotropium indicum l., salmalia malabrica, hibiscus rosa-sinensis l., plumeria rubra l., bambusa rundinacea. abortion is achieved through use of ...198212266264
zoosporicidal activity of polyflavonoid tannin identified in lannea coromandelica stem bark against phytopathogenic oomycete aphanomyces a survey of nonhost plant secondary metabolites regulating motility and viability of zoospores of the aphanomyces cochlioides, we found that stem bark extracts of lannea coromandelica remarkably inhibited motility of zoospores followed by lysis. bioassay-guided fractionation and chemical characterization of lannea extracts by maldi-tof-ms revealed that the active constituents were angular type polyflavonoid tannins. commercial polyflavonoid tannins, quebracho and mimosa, also showed identical ...200212405764
effects of substrates composed of biosolids on the production of eucalyptus viminalis, schinus terebinthifolius and mimosa scabrella seedlings and on the nutritional status of schinus terebinthifolius seedlings.six substrates made up with heated and composted anaerobic biosolid were tested for the production of eucalyptus viminalis, schinus terebinthifolius and mimosa scabrella forest seedlings in a nursery in southern brazil. the produced seedlings were statistically evaluated in relation to height, stem diameter, height/stem diameter ratio, aerial and root dry biomass, survival, and also for nutritional status on s. terebinthifolius seedlings. as a function of their high ph, heated biosolids turned o ...200212479477
enantioseparation of chiral aromatic amino acids by capillary electrophoresis in neutral and charged cyclodextrin selector modes.simultaneous enantioseparations of 15 racemic aromatic amino acids and l-mimosine for their chiral discrimination were achieved by neutral selector-modified capillary electrophoresis (ce) and by charged selector-modified ce. among the diverse cyclodextrins (cds) examined, hydroxypropyl (hp)-alpha-cd as the neutral selector and highly sulfated (hs)-gamma-cd as the charged selector provided best chiral environments of different enantioselectivities. fairly good enantiomeric resolutions were achiev ...200212481269
the comparative effect of novel pelargonium essential oils and their corresponding hydrosols as antimicrobial agents in a model food system.essential oils and their corresponding hydrosols, obtained after distillation of various scented pelargonium (geraniaceae) leaves were assessed for their antimicrobial activity in a model food system. both the essential oils and hydrosols were used at 1000 ppm in broccoli soup, previously inoculated with enterobacter aerogenes (at 10(5) cfu g(-1)) and staphylococcus aureus (at 10(4) cfu g(-1)). the results showed a complete inhibition of s. aureus in the broccoli soup by the essential oils of 's ...200312557249
a multiyear estimate of the effective pollen donor pool for albizia julibrissin.studies of pollen movement in plant populations are often limited to a single reproductive event, despite concerns about the adequacy of single-year measures for perennial organisms. in this study, we estimate the effective number of pollen donors per tree from a multiyear study of albizia julibrissin durazz (mimosa, fabaceae), an outcrossing, insect-pollinated tree. we determined 40 seedling genotypes for each of 15 seed trees during 4 successive years. a molecular analysis of variance of the p ...200312634826
mycorrhizal perennials of the "matorral xerófilo" and the "selva baja caducifolia" communities in the semiarid tehuacán-cuicatlán valley, mexico.we investigated the mycorrhizal status of perennial xeric plant species occurring in the "matorral xerófilo" (arid tropical scrub) and the ecotone of the "selva baja caducifolia" (tropical deciduous forest) communities in the semiarid valley of tehuacán-cuicatlán, south-central mexico. the perennial species examined are dominant/codominant elements within the "matorral xerófilo" and the "selva baja caducifolia", both endangered communities in the biosphere reserve tehuacán-cuicatlán valley. of t ...200312682829
[narcissistic physicians. tyrant and mimosa: demigod in white]. 200312688016
endemic mimosa species can serve as mycorrhizal "resource islands" within semiarid communities of the tehuacán-cuicatlán valley, mexico.this paper explores if mimosa species (fabaceae-mimosoideae) can serve as arbuscular mycorrhizal (am) and nutrient "resource islands" in six plant communities in the semiarid valley of tehuacán-cuicatlán, mexico. spatial heterogeneity related to the occurrence of mimosa species results in temporal differences in am-fungal spore numbers and soil nutrients. a higher number of am-fungal spores were found in the soil below the canopies of six endemic mimosa species than in the soil from non-vegetate ...200312836080
specific perception of ergosterol by plant cells.ergosterol (a fungal membrane component) induced modification of proton fluxes and membrane hyperpolarization in motor cells of mimosa pudica. these reactions appear specific since they were not induced by the other sterols tested. a specific desensitization was observed, since cells did not react to a second ergosterol application. exposed at first to other sterols, cells remained reactive to ergosterol. comparatively, chitosan (a fungal wall component with known elicitor properties) triggered ...200312876888
polliniferous plants and foraging strategies of apis mellifera (hymenoptera: apidae) in the yucatán peninsula, mexico.a study of the most important polliniferous plants for european and africanized honeybees (apis mellifera l.) was made in quintana roo state. comparisons were made between the plants visited by both bee types in order to determine whether there were qualitative or quantitative differences in their choice of plant species. also some foraging strategies of the honeybees were analysed. pollen from pollen load samples was acetolysed and mounted on slides. subsequently the pollen grains were identifi ...200212947587
excitable cells in inserting microelectrodes into cells of various tissues, it was shown that elongated parenchyma cells in the phloem and protoxylem, which have larger membrane potential than inexcitable cells of other types, generate action potentials with conduction. the electrical features of these cells are essentially similar to those of nerve and muscle cells.196213912476
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