Published: June 2, 1999
Tabela 1. Substâncias sulfatadas isoladas de macroalgas marinhas 8 2. Oligofenóis 13 3. Reestudo Vida/ia.Pesos dos concentrados extratos 45 obtidos desta alga e das fases provenientes diversas partições efetuadas nestes
Marine Ecology Progress Series, Journal Year: 1992, Volume and Issue: 88, P. 93 - 104
Published: Jan. 1, 1992
The Octocorallia are a highly diverse group, rich in secondary compounds which serve several ecological functions, including predator defense, interspecific competition for space, antifouling, and reproduction.The Alcyonacea characterized by high frequencies of ichthyotoxicity feeding deterrence not generally correlated with each other.This may be due to the multiple functions these perform, m s l n g correlations would otherwise apparent.Correlations between physical defense exist, but only at higher levels taxonomic resolution.One resultant selective advantage varlance ichthyotoxlcity Diffuse Batesian Mimicry, whereby toxic or feeding-deterrent characteristics majority species help protect taxon small number general morphological types variance coloration from generalist predators.Surface-brooded planulae Indo-Pacific coral species, similar appearance possessing deterrent attributes, similarly protected.The chemical characters octocorals same scleractinian corals serve, particularly space.Most lack rigid skeleton possessed scleractinians, can polyps predation.Octocorals also stinging nenlatocysts common possess allelopathic capabilities.In some octocorals, 'non-toxic' nematocysts on sweeper tentacles still effective space; others, aggressive interactions avoided through re-orientation movement, resulting directed growth.Octocoral orders distributed inequitably tropical Atlantic Indo-Pacific.The Gorgonacea dominate former; Alcyonacea.the latter.Octocoral diversity is western Indo-Pacific, as abundance rnetabolites their functions.This result differential extinction 2 regions dunng early Miocene late Pliocene/early Pleistocene, rates having been experienced Caribbean.These extinctions have affected radiation metabolites produced those serve.Secondary appear contributed evolutionary success Alcyonacea.In accordance Time-Stability hypothesis, we believe that this evolved under conditions reduced climatic change lower levels, when compared Caribbean.
Language: Английский
Citations
121
Western Indian Ocean Journal of Marine Science, Journal Year: 2004, Volume and Issue: 2(2)
Published: May 11, 2004
Keywords: clionasterol, macroalga, Halimeda macroloba, spectroscopy, bioprospecting, Kenya The triterpenoid clionasterol (1), a 29 carbon structure compound was isolated from the less polar extract (20% EtOAc in hexanes) of green alga macroloba collected at Shimoni near Mombasa, Kenya. and relative stereochemistry this elucidated by spectroscopic data, mainly NMR mass spectrometry. This metabolite inactive against DLD-1 cells on MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay. Further experiments mosquito larvae brine shrimp lethality confirmed result. Western Indian Ocean Journal Marine Sciences Vol.2(2) 2003: 157-161
Language: Английский
Citations
12
Revista Brasileira de Botânica, Journal Year: 2006, Volume and Issue: 29(3)
Published: Sept. 1, 2006
Two new sulfated oligobromophenols from the marine red algae Osmundaria obtusiloba, 4-(1'-potassium sulfate, 2,3-dibromo, 1',4,5-trihydroxybenzyl) - 4''-(1'''-potassium 2'',3''-dibromo, 1''',4'',5''-trihydroxybenzyl) sulfate and 1'-(2, 3-dibromo, 4-potassium 1', 4, 5-trihydroxybenzyl) 4''-(1''' potassium 2'', 3''-dibromo, 1''', 4'', 5'' trihydroxybenzyl) are herein reported. Besides them it was obtained 2, 2', 3, 3'-tetrabromo-4, 4', 5, 5'-tetrahydroxydiphenylmethane, 3-dibromo-p-hydroxybenzyl methyl ether (methyl lanosol), dipotassium 2,3-dibromo-5-hydroxybenzyl 1',4-disulfate, 24-methylenecolest-5-en-3-beta-ol alpha-D-mannopyranosyl-(1->2')-glycerate (digeneaside). The structures were determined by analysis of spectroscopic data (IR, NMR MS) comparison with literature. 13CNMR for 2,3-dibromo-5hydroxybenzyl-1',4-disulfate described here first time. present study also suggests a mild method to isolate purify compounds.
Language: Английский
Citations
10
Electronic Journal of Biotechnology, Journal Year: 2012, Volume and Issue: 15(5)
Published: Aug. 8, 2012
While there is a significant and growing body of knowledge describing the microbial communities marine invertebrates such as sponges, are very few studies focused on octocorals.The octocoral Eunicea fusca common reefs in various regions Caribbean has been subject natural product investigations.As part an effort to describe community associated with octocorals, culture-independent analysis bacterial E. was conducted.Specifically, 16S rDNA clone library performed provide baseline data.A total 40 bacteria members from 11 groups were found.In general, Proteobacteria dominant group 24 species α-Proteobacteria represented highest percentage (27.5%).Other prominent observed Acidobacteria, Actinobacteria, Cyanobacteria, Planctomycetes, δ-Proteobacteria, Lentisphaerae Nitrospirae.This first populations gorgonian fusca.
Language: Английский
Citations
7
Journal of Aquaculture Research & Development, Journal Year: 2012, Volume and Issue: 3(6)
Published: Jan. 1, 2012
In this work organic products were isolated and identified from a marine Bacillus sp. which presented growth inhibition of the pandemic strain V. parahaemolyticus.The inhibitory extracted characterized by spectroscopic spectrometric techniques.Purification active revealed five different diketopiperazines, compared with standards high-performance liquid chromatography (HPLC).Although diketopiperazines is not finding new metabolite, interested point or novelity ability to inhibit parahaemolyticus.We suggest possibility using compound reduce control proliferation pathogenic clones parahaemolyticus that cause several problems in aquaculture industry.
Language: Английский
Citations
6
ARKIVOC, Journal Year: 2003, Volume and Issue: 2003(3), P. 176 - 187
Published: May 13, 2003
A synthetic approach directed towards the total synthesis of novel protoilludane sesquiterpene pteridanone, aglycon glucoside pteridanoside from a bioactive hot-water extract neotropical braken fern Pteridium aquilinum var.caudatum (Dennstaedtiaceae), has been delineated.This endeavour delivered an advanced pre-target having complete skeleton with strategic placement functionalities and set stage for natural product.The key features our are ready availability starting material (1,5-cyclooctadiene), interesting photochemical [2+2]-cycloaddition thallium(III) mediated ring expansion reaction.
Language: Английский
Citations
5
Ciencia y tecnología de buques, Journal Year: 2014, Volume and Issue: 8(15), P. 75 - 75
Published: July 20, 2014
Habitually, control of biological fouling includes application paints containing toxic substances that end upcontaminating marine ecosystem. Many organisms prevent settlement other species synthesizing secondarymetabolites could be used in the elaboration environmentally friendly anti-fouling paints. This work evaluated behavior based on extracts from invertebrates ColombianCaribbean: Agelas tubulata, Myrmekioderma gyroderma, Oceanapia peltata, Aplysina lacunosa, Neopetrosia próxima,and Holothuria glaberrima. The painted panels were submerged port Mar del Plata (Argentina); after 90 days sea signi!cant differences registered total coverage between andthe controls (p<0.05). results obtained represent important progress toward using natural compounds incontrolling encrustations.
Language: Английский
Citations
2
International Journal of Pharmaceutical Sciences and Research, Journal Year: 2013, Volume and Issue: 4(9)
Published: Sept. 1, 2013
Antibacterial activity and protein content was studied in two species of octopus belonging to the family Octopoda.The highest zone inhibition about 34mm 28mm were obtained against Vibrio parahaemolyticus 107.16µg/L 136.20µg/L Octopus dolfusii aegina, respectively.SDS profile revealed bands molecular weight 32.83 KDa 72.36 for both species.Conclusively, factors analyzed prove that sample play an important roles chemical defensive mechanism pathogens causing diseases human fishes.This study paves a way further pharmaceutical research pathogenic bacterial strains producing valuable drugs. INTRODUCTION:Ocean offers large biodiversity flora fauna which is estimated be over 5,00,000 are more than double land species.This rich diversity marine organisms assumes great opportunity discovery new bioactive substance.The environment comprises complex ecosystems many known possess compounds as common means self-defense or protection eggs embryos.Some derive chemistry from dietary sources, while others synthesize de novo 1 .From 1960s approximately 300 natural products field patent.Approximately, 6,500 have been isolated 2 .
Language: Английский
Citations
1
Revista Ciencias Marinas y Costeras, Journal Year: 2010, Volume and Issue: 2, P. 61 - 61
Published: Dec. 11, 2010
The aim of the present work was to identify spore-forming Gram-positive Bacillus strains isolated from oceanic waters adjacent Cuba and establish a possible relationship between their distribution metabolic activity isolates. Total protein patterns, derived SDS-PAGE, were used build non-rooted dendrogram where appeared clustered in three nodes. No direct observed node particular species. In contrast, according physical chemical characteristics zones, I different II III, since it comprises farthest zones coast, poorer nutrients. On other hand, nodes III mainly collect nutrient organic matter-enriched zones. Associating clustering with activities, found that ratio: number positive activities/strain 2.3, followed by ratio 3.3, finally exhibiting equal 3.7. This could suggest total patterns bacteria belonging same specie, but coming environments degree richness, be an indicator capacities these microorganisms adapt live environments. El objetivo del presente trabajo fue la identificación de cepas bacilos Gram-positivos esporulados aislados las aguas oceánicas adyacentes y el establecimiento posible relación entre distribución actividades metabólicas los aislados. A partir patrón proteínas obtenido mediante electroforesis se construyó un dendrograma no enraizado, lo que permitió agrupación en tres nodos. observó una directa nodo especies particulares, sin embargo, encontraron diferencias nodos al considerar características físicas químicas zonas; diferente III. En ese agruparon bacterias aisladas zonas alejadas costa, pobres nutrientes. Por otro lado, agrupan principalmente más enriquecidas nutrientes materia orgánica. Con respecto asociación con metabólicas, encontró razón número positivas 2.3 I, seguida 3.3 por último Estos resultados sugieren que, patrones diferentes totales pertenecen misma especie, pero provienen ambientes grado riqueza nutrientes, podrían ser indicador capacidades estos microorganismos para adaptarse vivir ambientes.
Citations
1
GSC Biological and Pharmaceutical Sciences, Journal Year: 2022, Volume and Issue: 9(1), P. 326 - 334
Published: April 30, 2022
Background: Anodonta cygnea hemolymph has several pharmacological activities against inflammation, bacteria and tumor. The current study aimed to explore the efficacy of A. renal toxicity induced by Gentamicin (GM) in rats. Methods: animals were divided randomly into three groups (six per group): control, GM cygnea. Tissues established after injection daily for eight days at dose 100 mg/kg. Kidney functions, liver oxidative stress markers histopathology tissues investigated study. Results: treated rats showed a significant decrease urea, creatinine, uric acid, ALT, AST, GGT MDA levels while GSH CAT increased. histopathological kidney investigation partial restoration architecture. Conclusion: This potency improving biochemical changes following experimental induction using Gentamycin.
Language: Английский
Citations
1