de Souza AA

References (9)

Title : Euterpe oleracea Mart (Aaizeiro) from the Brazilian Amazon: A Novel Font of Fungi for Lipase Production - Sena_2022_Microorganisms_10_
Author(s) : Sena IS , Ferreira AM , Marinho VH , FH EH , Borges SF , de Souza AA , de Carvalho RKR , Lima AL , Florentino AC , Ferreira IM
Ref : Microorganisms , 10 : , 2022
Abstract : Lipases (EC are hydrolases that catalyze triglycerides hydrolysis in free fatty acids and glycerol. Among the microorganisms that produce lipolytic enzymes, the entophytic fungi stand out. We evaluated 32 fungi of different genera, Pestalotiopsis, Aspergillus, Trichoderma, Penicillium, Fusarium, Colletotrichum, Chaetomium, Mucor, Botryodiplodia, Xylaria, Curvularia, Neocosmospora and Verticillium, isolated from Euterpe oleracea Mart. (Aaizeiro) from the Brazilian Amazon for lipase activity. The presence of lipase was evidenced by the deposition of calcium crystals. The endophytic Pestalotiopsis sp. (31) and Aspergillus sp. (24) with Pz 0.237 (++++) and 0.5 (++++), respectively, were the ones that showed the highest lipolytic activity in a solid medium. Lipase activity was rated in liquid medium, in a different range of temperatures ( degreesC), pH and time (days). The values obtained in the production of lipase by the endophytic fungi were 94% for Pestalotiopsis sp. (31) and 93.87% for Aspergillus sp. (24). Therefore, it is emphasized that the endophytic fungus isolated the E. oleracea palm may be a potential candidate to produce enzymes of global commercial interest.
ESTHER : Sena_2022_Microorganisms_10_
PubMedSearch : Sena_2022_Microorganisms_10_
PubMedID: 36557647

Title : Multitarget Effect of 2-(4-(Methylthio)phenyl)-3-(3-(piperidin-1-yl)propyl)thiazolidin-4-one in a Scopolamine-Induced Amnesic Rat Model - da Silva_2021_Neurochem.Res__
Author(s) : da Silva DS , Soares MSP , Teixeira FC , de Mello JE , de Souza AA , Luduvico KP , de Andrade CM , Spanevello RM , Cunico W
Ref : Neurochem Res , : , 2021
Abstract : Cholinergic system dysfunction, oxidative damage, and alterations in ion pump activity have been associated with memory loss and cognitive deficits in Alzheimer's disease. 1,3-thiazolidin-4-ones have emerged as a class of compounds with potential therapeutic effects due to their potent anticholinesterase activity. Accordingly, this study investigated the effect of the 2-(4-(methylthio)phenyl)-3-(3-(piperidin-1-yl)propyl)thiazolidin-4-one (DS12) compound on memory, cholinergic and oxidative stress parameters, ion pump activity, and serum biochemical markers in a scopolamine-induced memory deficit model. Male Wistar rats were divided into four groups: I-Control; II-Scopolamine; III-DS12 (5 mg/kg) + scopolamine; and IV-DS12 (10 mg/kg) + scopolamine. The animals from groups III and IV received DS12 diluted in canola oil and administered for 7 days by gavage. On the last day of treatment, scopolamine (1 mg/kg) was administered intraperitoneally (i.p.) 30 min after training in an inhibitory avoidance apparatus. Twenty-four hours after scopolamine administration, the animals were subjected to an inhibitory avoidance test and were thereafter euthanized. Scopolamine induced memory deficits, increased acetylcholinesterase activity and oxidative damage, and decreased Na(+)/K(+)-ATPase activity in cerebral cortex and hippocampus. Pretreatment with DS12 prevented these brain alterations. Scopolamine also induced an increase in acetylcholinesterase activity in lymphocytes and whereas butyrylcholinesterase in serum and treatment with DS12 prevented these changes. In animals treated with DS12, no changes were observed in renal and hepatic parameters when compared to the control group. In conclusion, DS12 emerged as an important multitarget compound capable of preventing neurochemical changes associated with memory deficits.
ESTHER : da Silva_2021_Neurochem.Res__
PubMedSearch : da Silva_2021_Neurochem.Res__
PubMedID: 33755857

Title : Hypermethioninemia induces memory deficits and morphological changes in hippocampus of young rats: implications on pathogenesis - Soares_2020_Amino.Acids__
Author(s) : Soares MSP , de Mattos BDS , de Souza AA , Spohr L , Tavares RG , Siebert C , Moreira DS , Wyse ATS , Carvalho FB , Rahmeier F , Fernandes MDC , Stefanello FM , Spanevello RM
Ref : Amino Acids , : , 2020
Abstract : The aim of this study was to investigate the effect of the chronic administration of methionine (Met) and/or its metabolite, methionine sulfoxide (MetO), on the behavior and neurochemical parameters of young rats. Rats were treated with saline (control), Met (0.2-0.4 g/kg), MetO (0.05-0.1 g/kg), and/or a combination of Met + MetO, subcutaneously twice a day from postnatal day 6 (P6) to P28. The results showed that Met, MetO, and Met + MetO impaired short-term and spatial memories (P < 0.05), reduced rearing and grooming (P < 0.05), but did not alter locomotor activity (P > 0.05). Acetylcholinesterase activity was increased in the cerebral cortex, hippocampus, and striatum following Met and/or MetO (P < 0.05) treatment, while Na(+), K(+)-ATPase activity was reduced in the hippocampus (P < 0.05). There was an increase in the level of thiobarbituric acid reactive substances (TBARS) in the cerebral cortex in Met-, MetO-, and Met + MetO-treated rats (P < 0.05). Met and/or MetO treatment reduced superoxide dismutase, catalase, and glutathione peroxidase activity, total thiol content, and nitrite levels, and increased reactive oxygen species and TBARS levels in the hippocampus and striatum (P < 0.05). Hippocampal brain-derived neurotrophic factor was reduced by MetO and Met + MetO compared with the control group. The number of NeuN-positive cells was decreased in the CA3 in Met + MetO group and in the dentate gyrus in the Met, MetO, and Met + MetO groups compared to control group (P < 0.05). Taken together, these findings further increase our understanding of changes in the brain in hypermethioninemia by elucidating behavioral alterations, biological mechanisms, and the vulnerability of brain function to high concentrations of Met and MetO.
ESTHER : Soares_2020_Amino.Acids__
PubMedSearch : Soares_2020_Amino.Acids__
PubMedID: 31902007

Title : Methionine and methionine sulfoxide induces neurochemical and morphological changes in cultured astrocytes: Involvement of Na(+), K(+)-ATPase activity, oxidative status, and cholinergic and purinergic signaling - Soares_2020_Neurotoxicol_77_60
Author(s) : Soares MSP , Pedra NS , Bona NP , de Souza AA , Teixeira FC , Azambuja JH , Wyse AT , Braganhol E , Stefanello FM , Spanevello RM
Ref : Neurotoxicology , 77 :60 , 2020
Abstract : Hypermethioninemia is an inherited metabolic disorder characterized by high concentration of methionine (Met) and its metabolites such as methionine sulfoxide (Met-SO), which may lead to development of neurological alterations. The aim of this study was to investigate the in vitro effects of Met or Met-SO on viability, proliferation, morphology, and neurochemical parameters in primary culture of cortical astrocytes, after treatment with 1 or 2 mM Met or 0.5 mM Met-SO, for 24, 48, and 72 h. Met or Met-SO did not affect cell viability and proliferation but induced astrocyte hypertrophy. Acetylcholinesterase activity was increased, while Na(+), K(+)-ATPase activity was decreased by 2 mM Met, Met-SO, or Met (1 and 2 mM) + Met-SO (P < 0.05). ATP and AMP hydrolysis was decreased by Met (1 and 2 mM), Met-SO and Met (1 and 2 mM) + Met-SO treatment, while ADP hydrolysis was enhanced by Met-SO and Met (1 and 2 mM) + Met-SO (P < 0.05). Superoxide dismutase activity was increased by Met-SO and Met (1 and 2 mM) + Met-SO (P < 0.05). Catalase and glutathione S-transferase activities were reduced by Met or Met-SO treatment for 48 and 72h (P < 0.05). Reactive oxygen species and total thiol content was reduced by Met or Met-SO treatment for 24, 48, and 72h while nitrite and thiobarbituric acid reactive substance levels were increased under the same experimental conditions (P < 0.05). High concentrations of Met and Met-SO do not cause cell death but induced changes in astrocyte function. These alterations in astrocytic homeostasis may be associated with neurological symptoms found in hypermethioninemia.
ESTHER : Soares_2020_Neurotoxicol_77_60
PubMedSearch : Soares_2020_Neurotoxicol_77_60
PubMedID: 31883448

Title : In Vitro Effects of 2-{4-[Methylthio(methylsulfonyl)]phenyl}-3-substitutedthiazolidin-4-ones on the Acetylcholinesterase Activity in Rat Brain and Lymphocytes: Isoform Selectivity, Kinetic Analysis, and Molecular Docking - da Silva_2020_Neurochem.Res_45_241
Author(s) : da Silva DS , Soares MSP , Martini F , Pesarico AP , de Mattos BDS , de Souza AA , da Silva CEH , Scaini JLR , Machado KDS , Wayne Nogueira C , Spanevello RM , Cunico W
Ref : Neurochem Res , 45 :241 , 2020
Abstract : This work evaluated the in vitro effect of thiazolidin-4-ones on the activity of AChE (total and isoforms) isolated from the cerebral cortex, hippocampus, and lymphocytes. Kinetic parameters were evaluated and molecular docking was performed. Our results showed that thiazolidinones derived from 4-(methylthio)benzaldehyde (1) and from 4-(methylsulfonyl)benzaldehyde (2) were capable of inhibiting the AChE activity in vitro. Three compounds, two with a propylpiperidine (1b and 2b) moiety and one with a 3-(diethylamino)propyl (1c) moiety showed IC50 values of 13.81 muM, and 3.13 muM (1b), 55.36 muM and 44.33 muM (1c) for cerebral cortex and hippocampus, respectively, and 3.11 muM for both (2b). Enzyme kinetics revealed that the type of AChE inhibition was mixed. Compound 1b inhibited the G1 and G4 AChE isoforms, while compounds 1c and 2b selectively inhibited the G4 isoform. Molecular docking showed a possible three-dimensional fit into the enzyme. Our findings showed that these thiazolidin-4-ones, especially those containing the propylpiperidine core, have a potential cholinesterase inhibitory activity and can be considered good candidates for future Alzheimer's therapy.
ESTHER : da Silva_2020_Neurochem.Res_45_241
PubMedSearch : da Silva_2020_Neurochem.Res_45_241
PubMedID: 31845170

Title : Phytochemical Profile and Qualification of Biological Activity of an Isolated Fraction of Bellis perennis - Costa_2013_Biol.Res_46_231
Author(s) : Costa Marques TH , Santos De Melo CH , Fonseca De Carvalho RB , Costa LM , de Souza AA , David JM , De Lima David JP , De Freitas RM
Ref : Biol Res , 46 :231 , 2013
Abstract : This study describes the isolation and identification of apigenin-7-O-ghicopyranoside, a flavonoid isolated from the flowers of Bellis perennis L., Asteraceae, an species with a broad spectrum of biological activities. The in vitro antioxidant activity and the inhibition of the enzyme acetylcholinesterase were evaluated. The flavonoid showed strong in vitro antioxidant potential, because of the capacity of removal of hydroxyl radicals and nitric oxide, and also prevented the formation of thiobarbituric acid-reactive substances. These parameters were inhibited at the highest concentration of ApG at rates of 77.7%, 72% and 73.4%, respectively, in addition to inhibiting acetylcholinesterase, suggesting potential use in the treatment of neurodegenerative diseases.
ESTHER : Costa_2013_Biol.Res_46_231
PubMedSearch : Costa_2013_Biol.Res_46_231
PubMedID: 24346069

Title : The genome sequence of the gram-positive sugarcane pathogen Leifsonia xyli subsp. xyli - Monteiro-Vitorello_2004_Mol.Plant.Microbe.Interact_17_827
Author(s) : Monteiro-Vitorello CB , Camargo LE , Van Sluys MA , Kitajima JP , Truffi D , do Amaral AM , Harakava R , de Oliveira JC , Wood D , de Oliveira MC , Miyaki C , Takita MA , da Silva AC , Furlan LR , Carraro DM , Camarotte G , Almeida NF, Jr. , Carrer H , Coutinho LL , El-Dorry HA , Ferro MI , Gagliardi PR , Giglioti E , Goldman MH , Goldman GH , Kimura ET , Ferro ES , Kuramae EE , Lemos EG , Lemos MV , Mauro SM , Machado MA , Marino CL , Menck CF , Nunes LR , Oliveira RC , Pereira GG , Siqueira W , de Souza AA , Tsai SM , Zanca AS , Simpson AJ , Brumbley SM , Setubal JC
Ref : Mol Plant Microbe Interact , 17 :827 , 2004
Abstract : The genome sequence of Leifsonia xyli subsp. xyli, which causes ratoon stunting disease and affects sugarcane worldwide, was determined. The single circular chromosome of Leifsonia xyli subsp. xyli CTCB07 was 2.6 Mb in length with a GC content of 68% and 2,044 predicted open reading frames. The analysis also revealed 307 predicted pseudogenes, which is more than any bacterial plant pathogen sequenced to date. Many of these pseudogenes, if functional, would likely be involved in the degradation of plant heteropolysaccharides, uptake of free sugars, and synthesis of amino acids. Although L. xyli subsp. xyli has only been identified colonizing the xylem vessels of sugarcane, the numbers of predicted regulatory genes and sugar transporters are similar to those in free-living organisms. Some of the predicted pathogenicity genes appear to have been acquired by lateral transfer and include genes for cellulase, pectinase, wilt-inducing protein, lysozyme, and desaturase. The presence of the latter may contribute to stunting, since it is likely involved in the synthesis of abscisic acid, a hormone that arrests growth. Our findings are consistent with the nutritionally fastidious behavior exhibited by L. xyli subsp. xyli and suggest an ongoing adaptation to the restricted ecological niche it inhabits.
ESTHER : Monteiro-Vitorello_2004_Mol.Plant.Microbe.Interact_17_827
PubMedSearch : Monteiro-Vitorello_2004_Mol.Plant.Microbe.Interact_17_827
PubMedID: 15305603
Gene_locus related to this paper: leixx-q6ack2 , leixx-q6acm6 , leixx-q6acw2 , leixx-q6ad78 , leixx-q6adb9 , leixx-q6aed1 , leixx-q6aee6 , leixx-q6af15 , leixx-q6agt3 , leixx-q6ah78

Title : Comparative analyses of the complete genome sequences of Pierce's disease and citrus variegated chlorosis strains of Xylella fastidiosa - Van Sluys_2003_J.Bacteriol_185_1018
Author(s) : Van Sluys MA , de Oliveira MC , Monteiro-Vitorello CB , Miyaki CY , Furlan LR , Camargo LE , da Silva AC , Moon DH , Takita MA , Lemos EG , Machado MA , Ferro MI , da Silva FR , Goldman MH , Goldman GH , Lemos MV , El-Dorry H , Tsai SM , Carrer H , Carraro DM , de Oliveira RC , Nunes LR , Siqueira WJ , Coutinho LL , Kimura ET , Ferro ES , Harakava R , Kuramae EE , Marino CL , Giglioti E , Abreu IL , Alves LM , do Amaral AM , Baia GS , Blanco SR , Brito MS , Cannavan FS , Celestino AV , da Cunha AF , Fenille RC , Ferro JA , Formighieri EF , Kishi LT , Leoni SG , Oliveira AR , Rosa VE, Jr. , Sassaki FT , Sena JA , de Souza AA , Truffi D , Tsukumo F , Yanai GM , Zaros LG , Civerolo EL , Simpson AJ , Almeida NF, Jr. , Setubal JC , Kitajima JP
Ref : Journal of Bacteriology , 185 :1018 , 2003
Abstract : Xylella fastidiosa is a xylem-dwelling, insect-transmitted, gamma-proteobacterium that causes diseases in many plants, including grapevine, citrus, periwinkle, almond, oleander, and coffee. X. fastidiosa has an unusually broad host range, has an extensive geographical distribution throughout the American continent, and induces diverse disease phenotypes. Previous molecular analyses indicated three distinct groups of X. fastidiosa isolates that were expected to be genetically divergent. Here we report the genome sequence of X. fastidiosa (Temecula strain), isolated from a naturally infected grapevine with Pierce's disease (PD) in a wine-grape-growing region of California. Comparative analyses with a previously sequenced X. fastidiosa strain responsible for citrus variegated chlorosis (CVC) revealed that 98% of the PD X. fastidiosa Temecula genes are shared with the CVC X. fastidiosa strain 9a5c genes. Furthermore, the average amino acid identity of the open reading frames in the strains is 95.7%. Genomic differences are limited to phage-associated chromosomal rearrangements and deletions that also account for the strain-specific genes present in each genome. Genomic islands, one in each genome, were identified, and their presence in other X. fastidiosa strains was analyzed. We conclude that these two organisms have identical metabolic functions and are likely to use a common set of genes in plant colonization and pathogenesis, permitting convergence of functional genomic strategies.
ESTHER : Van Sluys_2003_J.Bacteriol_185_1018
PubMedSearch : Van Sluys_2003_J.Bacteriol_185_1018
PubMedID: 12533478
Gene_locus related to this paper: xylfa-ACVB , xylfa-cxest , xylfa-metx , xylfa-PD1038 , xylfa-PD1211 , xylfa-PD1300 , xylfa-PD1702 , xylfa-PD2024 , xylfa-pip , xylfa-XF0015 , xylfa-XF0357 , xylfa-XF0754 , xylfa-XF0863 , xylfa-XF1029 , xylfa-XF1181 , xylfa-XF1253 , xylfa-XF1282 , xylfa-XF1356 , xylfa-XF1479 , xylfa-XF1965 , xylfa-XF2330 , xylfa-XF2551

Title : The genome sequence of the plant pathogen Xylella fastidiosa. The Xylella fastidiosa Consortium of the Organization for Nucleotide Sequencing and Analysis - Simpson_2000_Nature_406_151
Author(s) : Simpson AJ , Reinach FC , Arruda P , Abreu FA , Acencio M , Alvarenga R , Alves LM , Araya JE , Baia GS , Baptista CS , Barros MH , Bonaccorsi ED , Bordin S , Bove JM , Briones MR , Bueno MR , Camargo AA , Camargo LE , Carraro DM , Carrer H , Colauto NB , Colombo C , Costa FF , Costa MC , Costa-Neto CM , Coutinho LL , Cristofani M , Dias-Neto E , Docena C , El-Dorry H , Facincani AP , Ferreira AJ , Ferreira VC , Ferro JA , Fraga JS , Franca SC , Franco MC , Frohme M , Furlan LR , Garnier M , Goldman GH , Goldman MH , Gomes SL , Gruber A , Ho PL , Hoheisel JD , Junqueira ML , Kemper EL , Kitajima JP , Krieger JE , Kuramae EE , Laigret F , Lambais MR , Leite LC , Lemos EG , Lemos MV , Lopes SA , Lopes CR , Machado JA , Machado MA , Madeira AM , Madeira HM , Marino CL , Marques MV , Martins EA , Martins EM , Matsukuma AY , Menck CF , Miracca EC , Miyaki CY , Monteriro-Vitorello CB , Moon DH , Nagai MA , Nascimento AL , Netto LE , Nhani A, Jr. , Nobrega FG , Nunes LR , Oliveira MA , de Oliveira MC , de Oliveira RC , Palmieri DA , Paris A , Peixoto BR , Pereira GA , Pereira HA, Jr. , Pesquero JB , Quaggio RB , Roberto PG , Rodrigues V , de MRAJ , de Rosa VE, Jr. , de Sa RG , Santelli RV , Sawasaki HE , da Silva AC , da Silva AM , da Silva FR , da Silva WA, Jr. , da Silveira JF , Silvestri ML , Siqueira WJ , de Souza AA , de Souza AP , Terenzi MF , Truffi D , Tsai SM , Tsuhako MH , Vallada H , Van Sluys MA , Verjovski-Almeida S , Vettore AL , Zago MA , Zatz M , Meidanis J , Setubal JC
Ref : Nature , 406 :151 , 2000
Abstract : Xylella fastidiosa is a fastidious, xylem-limited bacterium that causes a range of economically important plant diseases. Here we report the complete genome sequence of X. fastidiosa clone 9a5c, which causes citrus variegated chlorosis--a serious disease of orange trees. The genome comprises a 52.7% GC-rich 2,679,305-base-pair (bp) circular chromosome and two plasmids of 51,158 bp and 1,285 bp. We can assign putative functions to 47% of the 2,904 predicted coding regions. Efficient metabolic functions are predicted, with sugars as the principal energy and carbon source, supporting existence in the nutrient-poor xylem sap. The mechanisms associated with pathogenicity and virulence involve toxins, antibiotics and ion sequestration systems, as well as bacterium-bacterium and bacterium-host interactions mediated by a range of proteins. Orthologues of some of these proteins have only been identified in animal and human pathogens; their presence in X. fastidiosa indicates that the molecular basis for bacterial pathogenicity is both conserved and independent of host. At least 83 genes are bacteriophage-derived and include virulence-associated genes from other bacteria, providing direct evidence of phage-mediated horizontal gene transfer.
ESTHER : Simpson_2000_Nature_406_151
PubMedSearch : Simpson_2000_Nature_406_151
PubMedID: 10910347
Gene_locus related to this paper: xylfa-ACVB , xylfa-cxest , xylfa-metx , xylfa-PD2024 , xylfa-pip , xylfa-q9pdj5 , xylfa-XF0015 , xylfa-XF0357 , xylfa-XF0358 , xylfa-XF0754 , xylfa-XF0863 , xylfa-XF0992 , xylfa-XF1029 , xylfa-XF1181 , xylfa-XF1253 , xylfa-XF1282 , xylfa-XF1356 , xylfa-XF1479 , xylfa-XF1743 , xylfa-XF1745 , xylfa-XF1750 , xylfa-XF1829 , xylfa-XF1965 , xylfa-XF2151 , xylfa-XF2260 , xylfa-XF2330 , xylfa-XF2551 , xylfa-XFA0032