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21.
Cerqueira VS Hollenbach EB Maboni F Vainstein MH Camargo FA do Carmo R Peralba M Bento FM 《Bioresource technology》2011,102(23):11003-11010
The biodegradation capacity of aliphatic and aromatic hydrocarbons of petrochemical oily sludge in liquid medium by a bacterial consortium and five pure bacterial cultures was analyzed. Three bacteria isolated from petrochemical oily sludge, identified as Stenotrophomonas acidaminiphila, Bacillus megaterium and Bacillus cibi, and two bacteria isolated from a soil contaminated by petrochemical waste, identified as Pseudomonas aeruginosa and Bacillus cereus demonstrated efficiency in oily sludge degradation when cultivated during 40 days. The bacterial consortium demonstrated an excellent oily sludge degradation capacity, reducing 90.7% of the aliphatic fraction and 51.8% of the aromatic fraction, as well as biosurfactant production capacity, achieving 39.4% reduction of surface tension of the culture medium and an emulsifying activity of 55.1%. The results indicated that the bacterial consortium has potential to be applied in bioremediation of petrochemical oily sludge contaminated environments, favoring the reduction of environmental passives and increasing industrial productivity. 相似文献
22.
LM Cordeiro F Beilke FL Bettim Vde F Reinhardt YD Rattmann M Iacomini 《Carbohydrate polymers》2012,90(4):1779-1785
A structural study of the cell wall polysaccharides of Myrmecia biatorellae, the symbiotic algal partner of the lichenized fungus Lobaria linita was carried out. It produced a rhamnogalactofuranan, with a (1→6)-β-d-galactofuranose in the main-chain, substituted at O-2 by single units of β-d-Galf, α-l-Rhap or by side chains of 2-O-linked β-d-Galf units. The structure of the polysaccharide was established by chemical and NMR spectroscopic analysis, and is new among natural polysaccharides. Moreover, in a preliminary study, this polysaccharide increased the lethality of mice submitted to polymicrobial sepsis induced by cecal ligation and puncture, probably due to the presence of galactofuranose, which have been shown to be highy immunogenic in mammals. 相似文献
23.
Marina Prigol César Augusto Brüning Franciele Martini Cristina W. Nogueira 《Biological trace element research》2012,150(1-3):272-277
The purpose of this study was to provide data about in vivo tissue distribution and excretion of diphenyl diselenide ((PhSe)2) in rats and mice through determination of selenium levels in different biological samples. (PhSe)2 (500?mg/kg, dissolved in canola oil) was administered to animals once a day per oral. After this, mice and rats were housed in metabolic cages (one animal per cage) and urine and feces were collected at specific times after treatment. Three to five animals per group (for each time-point) were anesthetized and blood samples were collected at 0 and 30?min, 24?h, at day 5, 15, and 30 after (PhSe)2 administration. The plasma and red blood cells were separated. Brain, liver, lungs, kidneys, and adipose tissue were also collected. The determination of selenium levels was performed by inductively coupled plasma atomic emission spectrometry. The main results indicate that: (1) urine is an important route of excretion of selenium originated from (PhSe)2 in mice and rats; (2) a large amount of (PhSe)2 or some of its metabolites are stored in fat; (3) the content of selenium found in plasma was low; and (4) liver and kidneys are the tissues with high amounts of selenium. 相似文献
24.
Nitric oxide affecting root growth,lignification and related enzymes in soybean seedlings 总被引:2,自引:0,他引:2
Franciele Mara Lucca Zanardo Böhm Maria de Lourdes Lucio Ferrarese Daniele Iara Lucca Zanardo Jose Ronaldo Magalhaes Osvaldo Ferrarese-Filho 《Acta Physiologiae Plantarum》2010,32(6):1039-1046
This study analyzed the involvement of nitric oxide (NO) in the root lignification of soybean seedlings. To this end, changes
in root cell viability; phenylalanine ammonia-lyase (PAL) and soluble and cell wall bound peroxidase (POD) activities and
lignin and hydrogen peroxide (H2O2) contents of soybean roots treated with the NO-donor sodium nitroprusside (SNP) and its relationships with root growth were
evaluated. Seedlings were cultivated in a nutrient solution supplemented with 5 to 1,000 μM SNP for 24 h. At an extremely
low concentration (5 μM), SNP induced root growth and increased lignification and activities of related enzymes (PAL and cell
wall-bound POD). At a high concentration (1,000 μM), SNP reduced root growth and lignification (PAL activity and H2O2 and lignin contents) and caused a loss of cell viability. Application of potassium ferrocyanide (an analog of SNP that cannot
release NO) and PTIO (2-phenyl-4,4,5,5,-tetramethylimidazoleline-1-oxyl-3-oxide, a scavenger of NO) revealed that the inhibitory/stimulatory
effects on root lignification may be due to NO itself. These results indicate that NO, depending on its concentration, may
act as a stress factor, due to its toxic action, or as a signal molecule, inducing soybean root growth and lignification. 相似文献
25.
Franciele R. Figueira Daniel Umpierre Karina R. Casali Pedro S. Tetelbom Nicoli T. Henn Jorge P. Ribeiro Beatriz D. Schaan 《PloS one》2013,8(3)
Purpose
To evaluate the effects of aerobic (AER) or aerobic plus resistance exercise (COMB) sessions on glucose levels and glucose variability in patients with type 2 diabetes. Additionally, we assessed conventional and non-conventional methods to analyze glucose variability derived from multiple measurements performed with continuous glucose monitoring system (CGMS).Methods
Fourteen patients with type 2 diabetes (56±2 years) wore a CGMS during 3 days. Participants randomly performed AER and COMB sessions, both in the morning (24 h after CGMS placement), and at least 7 days apart. Glucose variability was evaluated by glucose standard deviation, glucose variance, mean amplitude of glycemic excursions (MAGE), and glucose coefficient of variation (conventional methods) as well as by spectral and symbolic analysis (non-conventional methods).Results
Baseline fasting glycemia was 139±05 mg/dL and HbA1c 7.9±0.7%. Glucose levels decreased immediately after AER and COMB protocols by ∼16%, which was sustained for approximately 3 hours. Comparing the two exercise modalities, responses over a 24-h period after the sessions were similar for glucose levels, glucose variance and glucose coefficient of variation. In the symbolic analysis, increases in 0 V pattern (COMB, 67.0±7.1 vs. 76.0±6.3, P = 0.003) and decreases in 1 V pattern (COMB, 29.1±5.3 vs. 21.5±5.1, P = 0.004) were observed only after the COMB session.Conclusions
Both AER and COMB exercise modalities reduce glucose levels similarly for a short period of time. The use of non-conventional analysis indicates reduction of glucose variability after a single session of combined exercises.Trial Registration
Aerobic training, aerobic-resistance training and glucose profile (CGMS) in type 2 diabetes (CGMS exercise). ClinicalTrials.gov ID: . NCT00887094相似文献26.
27.
Monique Michels Lucinéia Gainski Danieslki Andriele Vieira Drielly Florentino Dhébora Dall’Igna Letícia Galant Beatriz Sonai Francieli Vuolo Franciele Mina Bruna Pescador Diogo Dominguini Tatiana Barichello Jo?o Quevedo Felipe Dal-Pizzol Fabrícia Petronilho 《Molecular medicine (Cambridge, Mass.)》2015,21(1):219-226
Sepsis-associated encephalopathy (SAE) is associated with an increased rate of morbidity and mortality. It is not understood what the exact mechanism is for the brain dysfunction that occurs in septic patients, but brain inflammation and oxidative stress are a possible theory. Such events can occur through the alteration of molecules that perpetuate the inflammatory response. Thus, it is possible to postulate that CD40 may be involved in this process. The aim of this work is to evaluate the role of CD40–CD40L pathway activation in brain dysfunction associated with sepsis in an animal model. Microglia activation induces the upregulation of CD40–CD40L, both in vitro and in vivo. The inhibition of microglia activation decreases levels of CD40–CD40L in the brain and decreases brain inflammation, oxidative damage and blood brain barrier dysfunction. Despite this, anti-CD40 treatment does not improve mortality in this model. However, it is able to improve long-term cognitive impairment in sepsis survivors. In conclusion, there is a major involvement of the CD40–CD40L signaling pathway in long-term brain dysfunction in an animal model of sepsis. 相似文献
28.
Fernanda Monego Franciele Maboni Cristina Krewer Agueda Vargas Mateus Costa Elgion Loreto 《Current microbiology》2009,58(4):399-403
This study evaluated the molecular characteristics of Rhodococcus equi isolates obtained from horses by a multiplex PCR assay that amplifies the vap gene family (vapA, -B, -C, -D, -E, -F, -G, and -H). A total of 180 R. equi isolates were studied from four different sources, namely healthy horse feces (112), soil (12), stalls (23), and clinical
isolates (33) from horse-breeding farms. The technique was performed and confirmed by sequencing of amplified vap gene family controls. Thirty-two (17.8%) of the R. equi isolates were positive for the vapA gene and carried at least three other vap genes. All 147 isolates from equine feces, stalls, and soil failed to demonstrate any genes associated with virulence-inducing
proteins. About 32 (97.0%) out of the 33 clinical equine isolates tested positive for the multiplex PCR assay for the vap gene family. They demonstrated six molecular profiles: 100% featured the vapA, vapD, and vapG genes, 86.6% vapF, 76.6% vapH, 43.3% vapC, 36.6% vapE, and none vapB. The most frequent molecular profile was vap A, -D, -F, G, and -H, where this profile was present in 37.5% of the strains. Moreover, there was no molecular epidemiological pattern for R. equi isolates that uniquely mapped to each horse-breeding farm studied. Our proposed technique allows the identification of eight
members of the vap gene family (vapA, B, -C, -D, -E, -F, -G, and -H). It is a practical and efficient method of conducting clinical and epidemiological studies on R. equi isolates. 相似文献
29.
Schetinger MR Porto NM Moretto MB Morsch VM da Rocha JB Vieira V Moro F Neis RT Bittencourt S Bonacorso HG Zanatta N 《Neurochemical research》2000,25(7):949-955
This study examines the effect of new 1,5 benzodiazepines on acetylcholinesterase (AChE) and ATPDase (apyrase) activities from cerebral cortex of adult rats. Simultaneously, the effects of the classical 1,4-benzodiazepine on these enzymes were also studied for comparative purpose. The compounds 2-trichloromethyl-4-phenyl-3H-1,5-benzodiazepin and 2-trichloromethyl-4-(p-methyl-phenyl)-3H-1,5-benzodiazepin significantly inhibited acetylcholinesterase activity (p < 0.01) when tested in the range of 0.18–0.35 mM. The inhibition caused by these two new benzodiazepines was noncompetitive in nature. Similarly, at concentrations ranging from 0.063 to 0.25 mM, the 1,5 benzodiazepines inhibited ATP and ADP hydrolysis by synaptosomes from cerebral cortex (p < 0.01). However, the inhibition of nucleotide hydrolysis was uncompetitive in nature. Our results suggest that, although diazepam and the new benzodiazepines have chemical differences, they both presented an inhibitory effect on acetylcholinesterase and ATPDase activities. 相似文献
30.
Camila Hillesheim Horst Franciele Schlemmer Natália de Aguiar Montenegro Ana Carolina Martins Domingues Gabriel Ginani Ferreira Cínthia Yara da Silva Ribeiro Rafael Rocha de Andrade Elaine Del Bel Guimarães Simoneide Souza Titze-de-Almeida Ricardo Titze-de-Almeida 《Neurochemical research》2018,43(11):2132-2140
Parkinson’s disease (PD) is a highly complex brain disorder regarding clinical presentation, pathogenesis, and therapeutics. The cardinal motor signs, i.e., rigidity, bradykinesia, and unilateral tremors, arise in consequence of a progressive neuron death during the prodromal phase. Although multiple transmission systems are involved in disease neurobiology, patients will cross the line between the prodromal and early stage of diagnosed PD when they had lost half of the dopaminergic nigrostriatal cells. As the neurons continue to die ascending the neuroaxis, patients will face a more disabling disease with motor and nonmotor signs. Shedding light on molecular mechanisms of neuron death is an urgent need for understanding PD pathogenesis and projecting therapeutics. This work examined the expression of microRNAs in the striatum of parkinsonian rats chronically exposed to rotenone (2.5 mg/Kg, i.p., daily for 10 days). Rotenone caused motor deficits, the loss of TH(+) cells in the nigrostriatal pathway, and a marked microgliosis. This parkinsonian rat striatum was examined at 26 days after the last rotenone injection, for quantification of microRNAs, miR-7, miR-34a, miR-26a, miR-132, miR-382, and Let7a, by qPCR. Parkinsonian rats presented a significant increase in miR-26a and miR-34a (1.5 and 2.2 fold, respectively, P?<?0.05), while miR-7 (0.5 fold, P?<?0.05) and Let7a were downregulated. This work reports for first time microRNAs aberrantly expressed in the striatum of rotenone-induced parkinsonian rats, suggesting that this dysregulation may contribute to PD pathogenesis. Beyond revealing new clues of neurodegeneration, our findings might prime further studies targeting miRNAs for neuroprotection or even for diagnosis proposal. 相似文献