| population structure delineated with microsatellite markers in fragmented populations of a tropical tree, carapa guianensis (meliaceae) | deforestation and selective logging in the tropics may have serious consequences on genetic processes in tropical tree populations, affecting long-term survival of a given species as well as tropical forest communities. because understanding the effects of human-induced changes on genetic processes is of utmost importance in formulating sound conservation and management plans for tropical forest communities, we developed microsatellite or simple sequence repeat (ssr) markers for the tropical tre ... | 1999 | 10583822 |
| anti-allergic effects of natural tetranortriterpenoids isolated from carapa guianensis aublet on allergen-induced vascular permeability and hyperalgesia. | we investigated the anti-allergic and analgesic properties of an oil and a derived fraction of tetranortriterpenoids (tntp) obtained from the seeds of carapa guianensis aublet. | 2005 | 16134059 |
| activities of some brazilian plants against larvae of the mosquito aedes aegypti. | the insecticidal activities of extracts and oils of seventeen medicinal plants of brazil have been determined using an aedes aegypti larvicidal bioassay. oils from anacardium occidentalis, copaifera langsdorffii, carapa guianensis, cymbopogon winterianus and ageratum conyzoides showed high activities with lc50 values of 14.5, 41, 57, 98 and 148 microg/l, respectively. the most active ethanolic extract tested was that from the stem of annona glabra which presented an lc50 value of 27 microg/l. th ... | 2005 | 16253435 |
| inhibition of allergen-induced eosinophil recruitment by natural tetranortriterpenoids is mediated by the suppression of il-5, ccl11/eotaxin and nfkappab activation. | the present study reports the anti-allergic activity of a group of six different tetranortriterpenoids (tntp) isolated from the seeds of carapa guianensis aublet: 6a-acetoxygedunin, 7-deacetoxy-7-oxogedunin, andirobin, methyl angolensate, 6a-acetoxyepoxyazadiradione and gedunin. oral pretreatment with tntp significantly inhibited total leukocyte and eosinophil accumulation in c57bl/10 mice pleural cavities 24 h after the intrathoracic (i.t.) injection of ovalbumin (ova), but had no effect on cd4 ... | 2006 | 16399616 |
| antiinflammatory effects of natural tetranortriterpenoids isolated from carapa guianensis aublet on zymosan-induced arthritis in mice. | we investigated the antiinflammatory properties of a derived fraction of tetranortriterpenoids (tntp) obtained from the seeds of carapa guianensis aublet. | 2006 | 17122962 |
| a toxicological evaluation of the effect of carapa guianensis aublet on pregnancy in wistar rats. | the effects of the administration of carapa guianensis aublet (meliaceae) seed oil were investigated during pregnancy in female wistar rats. five groups of pregnant rats (n=5-9 per group) were treated orally from the 7th to the 14th day of pregnancy (organogenic period), at doses of: 0, 0.375, 0.75, 1.5 and 3.0gkg(-1). on the 20th day of pregnancy, the animals were sacrificed and laparotomized to evaluate reproductive parameters. the results showed that there was no difference between the contro ... | 2007 | 17368776 |
| acute and subacute toxicity of the carapa guianensis aublet (meliaceae) seed oil. | carapa guianensis (meliaceae), known as andiroba in brazil, has been used by amazon rainforest indigenous communities for treatment of coughs, convulsions, skin diseases, arthritis, rheumatism, ear infections, to heal wounds and bruises and as an insect repellent. carapa guianensis seed oil (so) was evaluated for its acute and subacute toxicity (30 days) by the oral route in wistar rats. in the acute toxicity test, so (0.625-5.0g/kg, n=5/sex) did not produce any hazardous symptoms or deaths. the ... | 2008 | 18281172 |
| patents of drugs extracted from brazilian medicinal plants. | plants synthesise a vast repertoire of chemicals with various biological activities. brazilian enormous botanical diversity facilitates the development of novel ethical drugs for the treatment of diseases in humans. | 2009 | 19441926 |
| experimental evaluation of ethanolic extract of carapa guianensis l. leaf for its wound healing activity using three wound models. | the leaves of carapa guianensis have been used to treat ulcers, skin parasites, and skin problems. the ethanolic extract of c. guianensis leaf was evaluated for its antibacterial and wound healing activity using excision, incision and dead space wound models in rats. the animals were randomly divided into two groups (n = 6) in all the models. in the excision wound model test group animals were treated topically with the leaf extract (250 mg kg(-1) body weight) whereas, control animals were treat ... | 2009 | 19825872 |
| investigation of the wound healing activity of carapa guianensis l. (meliaceae) bark extract in rats using excision, incision, and dead space wound models. | the objective of our study is to investigate the wound healing activity of the bark extract of carapa guianensis in rats using three different wound models. the animals were randomly divided into two groups of six each in all the models. test group animals were treated topically with the bark extract (200 mg/kg of body weight), and the controls were treated with petroleum jelly in the excision wound model. in the incision and dead space wound models the test group animals were treated with the e ... | 2010 | 20828307 |
| modulation of t lymphocyte and eosinophil functions in vitro by natural tetranortriterpenoids isolated from carapa guianensis aublet. | we have previously described the anti-allergic activities of a pooled fraction of tetranortriterpenoids (tntps) containing 6α-acetoxygedunin, 7-deacetoxy-7-oxogedunin, andirobin and methyl angolensate isolated from the seeds of carapa guianensis. in the present study, we performed in vitro studies in order to elucidate the mechanisms by which tntps present their anti-allergic effects and to identify the bioactive compound(s) present in such fraction. here, we show that in vitro incubation of eos ... | 2010 | 20951667 |
| effect of triterpenoids and limonoids isolated from cabralea canjerana and carapa guianensis (meliaceae) against spodoptera frugiperda (j. e. smith). | the activities of two triterpenoids, ocotillone and cabraleadiol, and four limonoids, methyl angolensate, 3-beta-deacetylfissinolide, 7-deacetoxy-7-oxogedunin, and beta-photogedunin, isolated from arillus of carapa guianensis and fruits and seeds of cabralea canjerana (meliaceae), were evaluated against the fall armyworm spodoptera frugiperda. gedunin was used as a positive control. 7-deacetoxy-7-oxogedunin and beta-photogedunin reduced the pupal weight as occurred with gedunin. cabraleadiol, 3- ... | 2011 | 21812341 |
| first report on susceptibility of wild aedes aegypti (diptera: culicidae) using carapa guianensis (meliaceae) and copaifera sp. (leguminosae). | oils of carapa guianensis and copaifera spp. are well known in the amazonian region as natural insect repellent, and studies have reported their efficiency as larvicide against some laboratory mosquito species. however, in wild populations of mosquitoes, these oils have not yet been evaluated. thus, the objective of this study was to investigate their efficiency as larvicide in wild populations of aedes aegypti with a history of exposure to organophosphate. the susceptibility of larvae was deter ... | 2011 | 21779861 |
| in vitro efficacy of plant extracts and synthesized substances on rhipicephalus (boophilus) microplus (acari: ixodidae). | herbal drugs have been widely evaluated as an alternative method of parasite control, aiming to slow development of resistance and obtain low-cost biodegradable parasiticides. this study evaluated the in vitro efficacy on rhipicephalus (boophilus) microplus of extracts from carapa guianensis seed oil, cymbopogon martinii and cymbopogon schoenanthus leaf essential oil, and piper tuberculatum leaf crude extract and similar synthesized substances. in the immersion test, engorged females were evalua ... | 2011 | 21695568 |
| the anthelmintic effect of plant extracts on haemonchus contortus and strongyloides venezuelensis. | the indiscriminate use of anthelmintics has resulted in the establishment of parasite resistance. thus, this study aimed to evaluate the in vitro antiparasitic effect of plant extracts on haemonchus contortus in sheep and the in vivo effect on strongyloides venezuelensis in rattus norvegicus. the plant extracts from piper tuberculatum, lippia sidoides, mentha piperita, hura crepitans and carapa guianensis, produced at different research institutions, were chemically analyzed and evaluated throug ... | 2012 | 21872995 |
| artisanal extraction and traditional knowledge associated with medicinal use of crabwood oil (carapa guianensis aublet.) in a peri-urban várzea environment in the amazon estuary. | várzea forests of the amazon estuary contain species of importance to riverine communities. for example, the oil extracted from the seeds of crabwood trees is traditionally used to combat various illnesses and as such artisanal extraction processes have been maintained. the objectives of this study were to (1) describe the process involved in artisanal extraction of crabwood oil in the fazendinha protected area, in the state of amapá; (2) characterise the processes of knowledge transfer associat ... | 2016 | 27478479 |
| development and evaluation of emulsions from carapa guianensis (andiroba) oil. | carapa guianensis, a popular medicinal plant known as "andiroba" in brazil, has been used in traditional medicine as an insect repellent and anti-inflammatory product. additionally, this seed oil has been reported in the literature as a repellent against aedes aegypti. the aim of this work is to report on the emulsification of vegetable oils such as "andiroba" oil by using a blend of nonionic surfactants (span 80® and tween 20®), using the critical hydrophilic-lipophilic balance (hlb) and pseudo ... | 2010 | 20824515 |
| cumulative mortality of aedes aegypti larvae treated with compounds. | objective to evaluate the larvicidal activity of azadirachta indica, melaleuca alternifolia, carapa guianensis essential oils and fermented extract of carica papaya against aedes aegypti (linnaeus, 1762) (diptera: culicidae). methods the larvicide test was performed in triplicate with 300 larvae for each experimental group using the third larval stage, which were exposed for 24h. the groups were: positive control with industrial larvicide (bti) in concentrations of 0.37 ppm (pc1) and 0.06 ppm (p ... | 0 | 25119939 |
| chemical composition of the essential oil from the leaves of carapa guianensis collected from venezuelan guayana and the antimicrobial activity of the oil and crude extracts. | the essential oil obtained by hydrodistillation of carapa guianensis aubl. (meliaceae) leaves was analyzed by gc-fid and gc-ms. twenty-three components were identified, which made up 93.7% of the oil. the most abundant constituents were bicyclogermacrene (28.5%), alpha-humulene (17.2%), germacrene b (11.9%), and trans-beta-caryophyllene (9.9%). antimicrobial activity of the essential oil, as well as the crude extracts of the leaves obtained by refluxing the dried leaves with n-hexane, dichlorome ... | 2013 | 24427961 |
| in vitro and in vivo anti-malarial activity of limonoids isolated from the residual seed biomass from carapa guianensis (andiroba) oil production. | carapa guianensis is a cultivable tree used by traditional health practitioners in the amazon region to treat several diseases and particularly symptoms related to malaria. abundant residual pressed seed material (rpsm) results as a by-product of carapa or andiroba oil production. the objective of this study was to evaluate the in vitro and in vivo anti-malarial activity and cytotoxicity of limonoids isolated from c. guaianensis rpsm. | 2014 | 25124944 |
| antiplasmodial activity of the andiroba (carapa guianensis aubl., meliaceae) oil and its limonoid-rich fraction. | from seeds of carapa guianensis the amazon native people extracts the andiroba oil, which is traditionally used as febrifuge, anti-malarial, insecticidal and repellant. the non-saponifiable fraction separated from the oil is rich in limonoids, which assigns its pharmacological effects. | 2012 | 22659195 |
| evaluation of time toxicity, residual effect, and growth-inhibiting property of carapa guianensis and copaifera sp. in aedes aegypti. | oils of carapa guianensis and copaifera spp. are well-known in the amazonian region as natural insect repellents, and studies have reported their efficiency as larvicide against some mosquito species. however, toxicity persistence and effect on mosquito development have not yet been evaluated. thus, the objective of this study was to evaluate the initial time of larvicidal activity, residual effect, and the effect of very low concentrations of these oils on aedes aegypti. different concentration ... | 2012 | 21766235 |
| larvicidal effect of andiroba oil, carapa guianensis (meliaceae), against aedes aegypti. | the aim of this work was to evaluate the larvicidal effect of andiroba oil, carapa guyanensis, against 2 strains of aedes aegypti. after 8 h after exposure to oil, the lethal concentration (lc)90 and lc95 values for the gcz (temephos-resistant) strain larvae were 80 and 86 ppm (1st instars), 98 and 106 (2nd instars), 166 and 182 (3rd instars), and 192 and 202 ppm (4th instars), respectively. thelc90 and lc95 values for the rockefeller strain larvae were 164 and 182 ppm (1st instars), 212 and 224 ... | 2006 | 17304939 |
| the use of andiroba carapa guianensis as larvicide against aedes albopictus. | andiroba carapa guianensis aubl. meliacea is known to possess repellent activity against many mosquito species. we evaluated the larvicidal effect of dry-scratched seed kernels of andiroba against a sylvatic f1 progeny and a laboratory-colonized population of aedes albopictus (skuse). the 3rd instar of f1 treated with 0.5 to 2% of c. guianensis for 24 and 48 hours, had mortality with lc50 of 0.74 (0.56-0.90%) and 0.68 (0.53-0.84%), respectively, and the 4th instar 0.66 (0.52-0.80%) and 0.55 (0.2 ... | 2004 | 15669392 |
| comparative study of the topical effectiveness of the andiroba oil (carapa guianensis) and deet 50% as repellent for aedes sp. | deet (n,n-diethyl-3-methylbenzamide) is nowadays the most effective mosquito repellent available, however, its use can present some topical and systemic side effects. some botanical compositions, as andiroba (carapa guianensis), have been proved repellent properties at low cost and toxicity. an experimental study was driven involving four volunteers submitting their forearms covered with andiroba oil at 100%, deet 50%, refined soy oil, andiroba oil 15% and in the absence of products, directly to ... | 2006 | 15517027 |
| activities of the pharmaceutical technology institute of the oswaldo cruz foundation with medicinal, insecticidal and insect repellent plants. | in addition to original research, far-manguinhos, the pharmaceutical division of the brazilian ministry of health's oswaldo cruz foundation (fiocruz), devotes major attention to the finalising of products for use in public health campaigns or, under contract, for private industrial development. emphasis is on standardisation, adequate supply, safety in use and efficacy. among the products discussed in this summary of some of its activities in the chemical and pharmaceutical fields are medicinal ... | 1999 | 10412493 |
| insecticidal and repellent effects of tea tree and andiroba oils on flies associated with livestock. | this study aimed to evaluate the insecticidal and repellent effects of tea tree, melaleuca alternifolia (myrtales: myrtaceae), and andiroba, carapa guianensis (sapindales: meliaceae), essential oils on two species of fly. for in vitro studies, free-living adult flies were captured and reared in the laboratory. to evaluate the insecticidal effects of the oils, adult flies of haematobia irritans (l.) and musca domestica l. (both: diptera: muscidae) were separated by species in test cages (n = 10 p ... | 2014 | 25171605 |
| interspecific variation in xylem vulnerability to cavitation among tropical tree and shrub species. | in tropical moist forests, seasonal drought limits plant survival, productivity and diversity. drought-tolerance mechanisms of tropical species should reflect the maximum seasonal water deficits experienced in a particular habitat. we investigated stem xylem vulnerability to cavitation in nine tropical species with different life histories and habitat associations. stem xylem vulnerability was scored as the xylem water potential causing 50 and 75% loss of hydraulic conductivity (p50 and p75, res ... | 2005 | 16137941 |
| carapanosins a-c from seeds of andiroba (carapa guianensis, meliaceae) and their effects on lps-activated no production. | two new phragmalin-type limonoids, carapanosins a and b (1 and 2), and a new gedunin-type limonoid, carapansin c (3), together with five known limonoids (4-8) were isolated from the oil of carapa guianensis aublet (meliaceae) seeds, a traditional medicine in brazil and latin american countries. their structures were elucidated on the basis of spectroscopic analyses using 1d and 2d nmr techniques and hrfabms. compounds 1-8 were evaluated for their effects on the production of no in lps-activated ... | 2017 | 28327530 |
| hepatoprotective limonoids from andiroba (carapa guianensis). | three gedunin-type limonoids, gedunin (1), 6α-acetoxygedunin (2), and 7-deacetoxy-7-oxogedunin (3), which were isolated from the seed and flower oils of andiroba (carapa guianensis aublet, meliaceae), exhibited hepatoprotective effects at doses of 25 mg/kg, p.o. against d-galactosamine (d-galn)/lipopolysaccharide (lps)-induced liver injury in mice. to characterize the mechanisms of action of 1-3 and clarify the structural requirements for their hepatoprotective effects, 17 related limonoids (1-1 ... | 2016 | 27104518 |
| effect of carapa guianensis aublet (andiroba) and orbignya phalerata (babassu) in colonic healing in rats. | to evaluate the healing effect of the babassu aqueous extract and andiroba oil on open wounds in the cecum of rats. | 2016 | 26814993 |
| carapanolides t-x from carapa guianensis (andiroba) seeds. | two new mexicanolide-type limonoids, carapanolides t-u (1-2), and three new phragmalin-type limonoids, carapanolides v-x (3-5), were isolated from the seeds of carapa guianensis (andiroba). their structures were determined on the basis of 1d- and 2d-nmr spectroscopy. | 2015 | 26610460 |
| in vitro repellent effect of tea tree (melaleuca alternifolia) and andiroba (carapa guianensis) oils on haemotobia irritans and chrysomya megacephala flies. | this study aimed to evaluate the repellent effect of tea tree (melaleuca alternifolia) and andiroba (carapa guianensis) essential oils on two species of flies (haemotobia irritans and chrysomya megacephala). for the in vitro studies, free-living adult flies were captured and reared in the laboratory. to verify the repellency effect, an apparatus was constructed where h. irritans and c. megacephala were exposed to andiroba and tea tree oils (5.0%), as well as to a known repellent (citronella, 5.0 ... | 2015 | 25801266 |
| carapanolides j-l from the seeds of carapa guianensis (andiroba) and their effects on lps-activated no production. | a novel gedunin and two novel phragmalin-type limonoids, named carapanolides j-l (compounds 1-3) as well as a known gedunin-type limonoid 4 were isolated from the seeds of carapa guianensis (andiroba). their structures were determined on the basis of 1d and 2d nmr spectroscopy and hrfabms. compounds 1-4 were evaluated for their effects on the production of no in lps-activated mouse peritoneal macrophages. | 2014 | 25347457 |
| effects of andiroba (carapa guianensis) oil in ticks: ultrastructural analysis of the synganglion of rhipicephalus sanguineus (latreille, 1806) (acari: ixodidae). | the present study performed an analysis of the ultrastructural changes induced by andiroba seed oil in the synganglion of rhipicephalus sanguineus female ticks, aiming to provide scientific grounds to help in the creation of more specific and efficient methods of control. the synganglion consists of a mass of fused nerves externally covered by the neural lamella, a uniform and acellular layer. just below, the perineurium is found, formed by glial cells. internally, the synganglion is subdivided ... | 2015 | 25261600 |
| andirolides w-y from the flower oil of andiroba (carapa guianensis, meliaceae). | three new limonoids, andirolides w-y (1-3), were isolated from the flower oil of carapa guianasis aublet (meliaceae). their structures were elucidated on the basis of spectroscopic analyses using 1d and 2d nmr spectra and fabms. seven known limonoids: 7-deacetoxy-7-oxogedunin (4), 6α-acetoxygedunin (5), methylangolensate (6), 6α-hydroxygedunin (7), 6α-acetoxy-7α-deacetoxy-7α-hydroxygedunin (8), gedunin (9), and 7-deacetoxy-7-hydroxygedunin (10) from this flower oil were evaluated for the effects ... | 2015 | 25200371 |
| carapanolides c-i from the seeds of andiroba (carapa guianensis, meliaceae). | five new mexicanolide-type limonoids, carapanolides c-g (1-5), together with two new phragmalin-type limonoids, carapanolides h-i (6, 7), were isolated from the oil of carapa guianasis aublet (meliaceae) seeds. their structures were elucidated on the basis of spectroscopic analyses using 1d and 2d nmr spectra and fabms. carapanolides c (1), e (3), and i (7) exhibited moderate activity in the p388 (ic50 17.9 μm in 1, 15.8 μm in 3) and l1210 cell lines (ic50 13.3 μm in 1, 18.1 μm in 3, 16.9 μm in ... | 2014 | 24747053 |
| high-throughput transcriptome sequencing and preliminary functional analysis in four neotropical tree species. | the amazonian rainforest is predicted to suffer from ongoing environmental changes. despite the need to evaluate the impact of such changes on tree genetic diversity, we almost entirely lack genomic resources. | 2014 | 24673733 |
| effects of andiroba (carapa guianensis) oil on hepatic function of rats subjected to liver normothermic ischemia and reperfusion. | to evaluate the effects of the andiroba (carapa guianensis) oil on liver function in rats subjected to normothermic ischemia / reperfusion injury. | 2014 | 24573626 |
| [predation, removal and seed dispersal in a wetland dominated by palms (arecaceae)]. | in the tortuguero floodplains, costa rica, a significant number of trees such as carapa guianensis, pentaclethra mnacroloba and the palm manicaria saccifera have floating seeds adapted to hydrocory, while others, such as the almendro dipteryx oleifera and the raffia palm raphia taedigera have heavy seeds that do not float. these species have differential distributions, and while c. guianensis, p macroloba and d. oleifera also grow on slopes away from the flood, the palms m saccifera and r. taedi ... | 2013 | 24459753 |
| [seed germination and seedling survival and growth in swamps dominated by palms raphia tae- digera (arecaceae) in tortuguero plains, costa rica]. | in the marshes dominated by palms, seeds face anaerobic substrates and long flooding periods. some tree species are capable of growing both in flooded swamps and in areas with lower influence of the flood. i studied the potential settlement of various tree species in different macrohabitats in the tortuguero floodplain using three experiments: (1) manicaria saccifera and raphia taedigera seed germination in palm-swamps and forests of slopes; (2) germination of r. taedigera seeds along a microtop ... | 2013 | 24459752 |
| assessing the extent of "conflict of use" in multipurpose tropical forest trees: a regional view. | in the context of multiple forest management, multipurpose tree species which provide both timber and non-timber forest products (ntfp), present particular challenges as the potential of conflicting use for either product may be high. one key aspect is that the magnitude of conflict of use can be location specific, thus adding complexity to policy development. this paper focuses on the extent to which the potential for conflict of use in multipurpose tree species varies across the amazonian lowl ... | 2013 | 24061084 |
| [influence of schinus terebinthifolius raddi (aroeira) and carapa guianensis aublet (andiroba) in the healing process of gastrorraphies]. | the gastrorraphy isolated or associated with the use of biological adhesives formed throughout the history of surgery the usual way to promote healing in gastric lesions; however, the use of herbal medicine has been increasingly employed to help the wound healing. | 2013 | 24000017 |
| andirolides q-v from the flower of andiroba (carapa guianensis, meliaceae). | two new gedunins, an andirobin, two mexicanolides, and a phragmalin-type limonoid, named andirolides q (1), r (2), s (3), t (4), u (5), and v (6), were isolated from an oil of the flower of carapa guianensis aublet (meliaceae). their structures have been elucidated on the basis of spectroscopic analyses using 1d and 2d nmr spectra and fabms. andirolide s (3) and andirolide t (4) showed significant cytotoxic activity against the murine p388 leukemia cell line (ic₅₀ of 1.4 μm for 3; 1.8 μm for 4) ... | 2013 | 23850542 |
| guianolides a and b, new carbon skeletal limonoids from the seeds of carapa guianensis. | two novel limonoids, named guianolides a (1) and b (2), were isolated from the seeds of carapa guianensis aublet (meliaceae). their structures were established by spectroscopic analyses and x-ray crystallography. guianolides a (1) and b (2) featured an unprecedented carbon skeleton via the formation of a c-11-c-21 bond. | 2013 | 23734934 |
| the therapeutic properties of carapa guianensis. | carapa guianensis aublet (meliaceae), also known as andiroba, is used in popular medicine in brazil and other countries encompassing the amazon rainforest. virtually all parts of the andiroba tree are utilized, including the seed's oil, which is employed to treat inflammation and infections. the medicinal properties of c. guianensis have been attributed to the presence of limonoids, which are tetranortriterpenoids. we have previously demonstrated that the oil obtained from c. guianensis seeds co ... | 2014 | 23701562 |
| morphological and cytochemical changes in synganglion of rhipicephalus sanguineus (latreille, 1806) (acari: ixodidae) female ticks from exposure of andiroba oil (carapa guianensis). | actually, the most used method to control ticks is synthetic acaricides with neurotoxic action. however, the use of these methods presents inconveniences, such as the contamination of the environment and risks to the host's health due to the residual effects. thus, several studies have been developed aiming to find alternative ways to control these ectoparasites, such as the use of natural compounds with active ingredients, which act controlling some species of plagues in addition to presenting ... | 2013 | 23625505 |
| pollen and seed flow patterns of carapa guianensis aublet. (meliaceae) in two types of amazonian forest. | various factors affect spatial genetic structure in plant populations, including adult density and primary and secondary seed dispersal mechanisms. we evaluated pollen and seed dispersal distances and spatial genetic structure of carapa guianensis aublet. (meliaceae) in occasionally inundated and terra firme forest environments that differed in tree densities and secondary seed dispersal agents. we used parentage analysis to obtain contemporary gene flow estimates and assessed the spatial geneti ... | 2012 | 23271944 |
| ethnoveterinary knowledge and practices at colares island, pará state, eastern amazon, brazil. | the lack of ethnoveterinary surveys in brazil, especially in the amazon region, results in losses in the veterinary phytopharmacology field and in scientific documentation of the cultural traditions of plant use in the treatment of animal diseases. | 2012 | 23000170 |
| action of andiroba oil (carapa guianensis) on rhipicephalus sanguineus (latreille, 1806) (acari: ixodidae) semi-engorged females: morphophysiological evaluation of reproductive system. | because of the increasing medical-veterinary importance of ticks, the development of alternative control methods, less aggressive to the host and the environment has become the target of several researches. in this sense, the present study analyzed the action of different concentrations (5, 10, and 20%) of andiroba seed oil (carapa guianensis) on the reproductive system of rhipicephalus sanguineus females, through histochemical techniques and the quantification of the reproductive efficiency ind ... | 2012 | 22972770 |
| new magnetic fluid developed with natural organic compounds biocompatible. | this work was developed with an aqueous suspension of maghemite nanoparticles and colloidal emulsions with nanoparticles of magnetite. the nanoparticles were synthesized by co-precipitation method. the first was the magnetic emulsion nanoparticles of maghemite dispersed in the aqueous extract obtained from the leaf embauba (cecropia obtusifolia), whose tree is native to central and south america. thereby achieving the magnetic fluid extract embauba stabilized with ionic buffer solution ph 7.4. a ... | 2012 | 22905527 |
| cytotoxic effects of andiroba oil (carapa guianensis) in reproductive system of rhipicephalus sanguineus (latreille, 1806) (acari: ixodidae) semi-engorged females. | the present study performed an analysis about the effects of andiroba seed oil (carapa guianensis) in the ovary of rhipicephalus sanguineus semi-engorged females; once, there are few studies about the action of natural products on the reproductive system, a vital organ for the biological success of this animal group. the results showed that andiroba oil is a potent natural agent which causes significant structural changes in the oocytes, such as the emergence of large vacuolated cytoplasmic regi ... | 2012 | 22797575 |
| isolation of limonoids from seeds of carapa guianensis aublet (meliaceae) by high-speed countercurrent chromatography. | limonoids are tetranortriterpenoids of considerable interest due to their structural varieties and biological activities, such as insecticidal, antibacterial, antifungal, antimalarial, anticancer and antiviral. they contain oxygen atoms that confer a moderate polarity and are responsible for the difficulties in their separation by traditional chromatographic methods. high-speed countercurrent chromatography (hsccc) is a versatile liquid-liquid separation technique, in which the sample is distrib ... | 2012 | 19003936 |
| development of an hplc method for the determination of tetranortriterpenoids in carapa guianensis seed oil by experimental design. | carapa guianensis crabwood, popularly known in brazil as "andiroba", is a tree that grows in south and central america and is used by the local population mainly for its anti-inflammatory and insect anti-feeding activities. scientific studies on this plant have led to the development of an insect-repellent candle and the investigations of the anti-inflammatory properties of its more important biomarkers-tetranortriterpenoids. these compounds, together with glycerides and fatty acids, are present ... | 2008 | 18845411 |
| allometric relationships predicting foliar biomass and leaf area:sapwood area ratio from tree height in five costa rican rain forest species. | we developed allometric equations to predict whole-tree leaf area (a(l)), leaf biomass (m(l)) and leaf area to sapwood area ratio (a(l):a(s)) in five rain forest tree species of costa rica: pentaclethra macroloba (willd.) kuntze (fabaceae/mim), carapa guianensis aubl. (meliaceae), vochysia ferru-gi-nea mart. (vochysiaceae), virola koshnii warb. (myristicaceae) and tetragastris panamensis (engl.) kuntze (burseraceae). by destructive analyses (n = 11-14 trees per species), we observed strong nonli ... | 2008 | 18765365 |
| interannual variation in rainfall, drought stress and seedling mortality may mediate monodominance in tropical flooded forests. | flood tolerance is commonly regarded as the main factor explaining low diversity and monodominance in tropical swamps. in this study we examined seedling mortality in relation to seasonality, i.e., flooding versus drought, of the dominant tree species (prioria copaifera), and three associated species (pterocarpus officinalis, carapa guianensis and pentaclethra macroloba), in seasonally flooded forests (sff) in darien, panama. seedling mortality differed among species, years and seasons. prioria ... | 2007 | 17690914 |
| impact of selective logging on inbreeding and gene dispersal in an amazonian tree population of carapa guianensis aubl. | selective logging may impact patterns of genetic diversity within populations of harvested forest tree species by increasing distances separating conspecific trees, and modifying physical and biotic features of the forest habitat. we measured levels of gene diversity, inbreeding, pollen dispersal and spatial genetic structure (sgs) of an amazonian insect-pollinated carapa guianensis population before and after commercial selective logging. similar levels of gene diversity and allelic richness we ... | 2007 | 17284212 |
| constituents of carapa guianensis aubl. (meliaceae). | nine compounds were isolated from the etoh extraction of the twig of carapa guianensis aubl. on the basis of spectroscopic methods, their structures were elucidated as 1,3-di-benzene carbon amine-2-octadecylic acid-glyceride (1), hexacosanoic acid-2,3-dihydroxy-glyceride (2), ursolic acid (3), naringenin (4), scopoletin (5), 3,4-dihydroxymethylbenzoate (6), 2,6-dihydroxymethylbenzoate (7), tetratriacontanoic acid (8), triacontanoic acid (9) respectively. among them 1 was new, 2 was firstly isola ... | 2004 | 15248467 |
| tapping an amazônian plethora: four medicinal plants of marajó island, pará (brazil). | this study focused its attention on four medicinal plants (carapa guianensis, elephantopus scaber, piper umbellatum, stachytarpheta cayenensis) used by caboclo communities on marajó, the main island of the amazon delta. in the field, interviews were conducted with caboclos and the medicinal usages and preparation procedures of the four plants were recorded. in the laboratory, the plant extracts were subjected to bioassays and their crude chemical composition was established. all four plants show ... | 1993 | 8246531 |