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au:Fragoso, D. B.

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Cytotoxic/antiproliferative and nutraceutical activity of aqueous and ethanolic extracts of green and mature Averrhoa carambola
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Fragoso, A. G.

; Cadoná, M. M.

; Bressiani, P. A.

; Gomes, E. M. V.

; Dalmolin, I. A. L.

; Tonial, I. B.

; Tonin, L. T. D.

; Hirata, P. M. V.

; Berti, A. P.

; Düsman, E.

Brazilian Journal of Biology

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2023, Volume 83 elocation e276605

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

Abstract Averrhoa carambola L. presents in its composition diversity of nutrients and vitamins. The present study aimed to extract water and fat-soluble compounds from this fruit at different stages of maturation (green and mature), perform the physical-chemical characterization as well as evaluate its cytotoxicity against hepatoma cells of Rattus norvegicus (HTC). The physicochemical results showed that the pH and molar acidity is influenced by the fruit maturation state. The fruit presented high percentage of moisture, while the percentage of total minerals (ash) increased according to its maturation stage. The results of the phytochemical screening showed that star fruits present phenolic compounds. The antioxidant activity showed greater potential for the ethanolic extracts of the green and mature star fruit. For HTC cells treated with ethanolic extract of green and mature star fruit the data show absence of cytotoxic effect. The tests with the aqueous extract showed cytotoxic/antiproliferative effect of green and mature star fruit extract, in 24, 48 and 72 hours. The presence of nutraceutical compounds and the cytotoxic/antiproliferative activity were more expressive in the aqueous extract, being an option of easily accessible solvent economic and not harmful to organisms.

Resumo A Averrhoa carambola L. apresenta em sua composição diversidade de nutrientes e vitaminas. O presente estudo teve como objetivo extrair compostos hidrossolúveis e lipossolúveis deste fruto em diferentes estádios de maturação (verde e maduro), realizar a caracterização físico-química, bem como avaliar sua citotoxicidade contra células de hepatoma de Rattus norvegicus (HTC). Os resultados físico-químicos mostraram que o pH e a acidez molar são influenciados pelo estado de maturação dos frutos. O fruto apresentou alto percentual de umidade, enquanto o percentual de minerais totais (cinzas) aumentou de acordo com seu estádio de maturação. Os resultados da triagem fitoquímica mostraram que as carambolas apresentam compostos fenólicos. A atividade antioxidante apresentou maior potencial para os extratos etanólicos da carambola verde e madura. Para células HTC tratadas com extrato etanólico de carambola verde e madura os dados mostram ausência de efeito citotóxico. Os testes com o extrato aquoso mostraram efeito citotóxico/antiproliferativo do extrato de carambola verde e madura, em 24, 48 e 72 horas. A presença de compostos nutracêuticos e a atividade citotóxica/antiproliferativa foram mais expressivas no extrato aquoso, sendo uma opção de solvente de fácil acesso econômico e não prejudicial aos organismos.

https://doi.org/10.1590/1519-6984.276605

Dermatobiosis in Panthera onca: first description and multinomial logistic regression to estimate and predict parasitism in captured wild animals
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May-Junior, Joares Adenilson

; Fagundes-Moreira, Renata

; Souza, Vinícius Baggio de

; Almeida, Bruno Albuquerque de

; Haberfeld, Mario B.

; Sartorelo, Leonardo R.

; Ranpim, Lilian Elaine

; Fragoso, Carlos Eduardo

; Soares, João Fabio

Revista Brasileira de Parasitologia Veterinária

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2021, Volume 30 N. 1 elocation e023820

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Dermatobia hominis é um parasito amplamente distribuído nas regiões neotropicais. A fase parasitária do ciclo é caracterizada pela formação de um nódulo subcutâneo no hospedeiro, que pode promover infestação por outros dípteros e infecções cutâneas. O objetivo deste relato é registrar o parasitismo por D. hominis em Panthera onca de vida livre, capturado no pantanal brasileiro e determinar fatores biológicos e meteorológicos significativos que podem influenciar a presença de parasitismo larval em onças-pintadas selvagens capturadas. Entre 2011 e 2020, 34 onças-pintadas foram capturadas e examinadas manualmente em busca de lesões características de miíase. Por compressão manual nos nódulos subcutâneos, larvas classificadas morfologicamente como D. hominis (primeiro e terceiro instares) foram coletadas de 13 onças-pintadas. Uma regressão logística multinomial mostrou que onças-pintadas adultas tinham chances 16,49 vezes maiores de serem parasitadas do que subadultos. Assim, onças-pintadas capturadas na temporada de julho a setembro têm probabilidade 34,01 e 11,42 vezes maior de serem parasitadas em comparação com as temporadas de outubro a dezembro e de abril a junho, respectivamente, o que está associado à alta precipitação total mensal na temporada anterior. O presente estudo é o primeiro a descrever parasitismo por larvas de D. hominis em onças-pintadas.

Abstract Dermatobia hominis is a parasite widely distributed in neotropical regions. The parasitic phase of the cycle is characterized by the formation of a subcutaneous nodule in the host, which can promote infestation by other dipterans and skin infections. The aim of this report is to register parasitism by D. hominis in free-ranging Panthera onca captured in the Brazilian wetland and to determine significant biological and meteorological factors that are likely to influence the presence of larval parasitism in captured wild jaguars. Between 2011 to 2020, 34 jaguars were captured and examined manually by searching for lesions characteristic of myiasis. By manual compression in the subcutaneous nodules, larvae morphologically identified as D. hominis (first and third instars) were collected from 13 jaguars. A multinomial logistic regression showed that adult jaguars had 16.49-fold higher odds of being parasitized than subadults. Thus, jaguars captured in the season of July–September have 34.01- and 11.42-fold higher odds of being parasitized compared to the seasons of October–December and April–June, respectively, which is associated with high total monthly precipitation in the previous season. The present study is the first to describe parasitism by D. hominis larvae in jaguars.

https://doi.org/10.1590/s1984-29612021003 431 downloads

Migraine in 746 patients with multiple sclerosis
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Fragoso, Yara Dadalti

; Adoni, Tarso

; Alves-Leon, Soniza V.

; Apostolos-Pereira, Samira L.

; Carneiro, Marcos A. Diniz

; Chikota, Edila M.

; Diniz, Denise Sisterolli

; Eboni, Audred C. B.

; Gomes, Sidney

; Gonçalves, Marcus Vinicius M.

; Goncalves, Ricardo Pereira

; Inojosa, José Luiz

; Junqueira, Thiago F.

; Machado, Suzana Costa

; Malfetano, Fabiola Rachid

; Mansur, Letícia Fezer

; Mendes, Maria Fernanda

; Muniz, Andre

; Nobrega Junior, Adaucto W.

; Olival, Guilherme Sciascia do

; Parolin, Monica Fiuza

; Pimentel, Maria Lucia V.

; Rocha, Cristiane Franklin

; Ruocco, Heloisa Helena

; Santos, Gutemberg C.

; Siquineli, Fabio

; Soares, José Otavio D.

; Sousa, Nise Alessandra C.

; Tauil, Carlos Bernardo

; Winckler, Thereza Cristina A.

Arquivos de Neuro-Psiquiatria

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sep 2019, Volume 77 N. 9 Pages 617 - 621

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO Enxaqueca piora o sofrimento do paciente que tem esclerose múltipla (EM). ID-migraine é uma ferramenta útil para seleção de pacientes com enxaqueca e Migraine Disability Assessment (MIDAS) é um questionário que avalia o impacto da doença. O objetivo do presente estudo foi avaliar a presença e impacto de enxaqueca em pacientes com EM. Métodos: Pacientes diagnosticados com EM e tratados em clínicas especializadas foram convidados a responder um questionário online se também apresentassem cefaleia. Resultados: O estudo incluiu 746 participantes com cefaleia e EM que preencheram completamente as respostas. Foram 625 mulheres e 121 homens, sendo 69% dos pacientes com idade entre 20 e 40 anos. Enxaqueca foi identificada em 404 pacientes (54,1%) e moderado a grave impacto da doença foi observado em 68,3% dos casos. Conclusão: Enxaqueca é uma cefaleia primária frequente e incapacitante relatada por pacientes com EM.

ABSTRACT Migraine adds to the burden of patients suffering from multiple sclerosis (MS). The ID-migraine is a useful tool for screening migraine, and the Migraine Disability Assessment questionnaire can evaluate disease burden. The aim of the present study was to assess the presence and burden of migraine in patients with MS. Methods: Patients diagnosed with MS attending specialized MS units were invited to answer an online survey if they also experienced headache. Results: The study included 746 complete responses from patients with MS and headache. There were 625 women and 121 men, and 69% of all the patients were aged between 20 and 40 years. Migraine was identified in 404 patients (54.1%) and a moderate-to-high burden of disease was observed in 68.3% of the patients. Conclusion: Migraine is a frequent and disabling type of primary headache reported by patients with MS.

https://doi.org/10.1590/0004-282x20190100 1666 downloads

PROP1 overexpression in corticotrophinomas: evidence for the role of PROP1 in the maintenance of cells committed to corticotrophic differentiation
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Araujo, Ricardo V.

; Chang, Claudia V.

; Cescato, Valter A. S.

; Fragoso, Maria Candida B. V.

; Bronstein, Marcello D.

; Mendonca, Berenice B.

; Arnhold, Ivo J. P.

; Carvalho, Luciani R. S.

Clinics

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jun 2013, Volume 68 N. 6 Pages 887 - 891

Abstract: En | Text: En | PDF: En

OBJECTIVE: The expression of transcription factors involved in early pituitary development, such as PROP1 and POU1F1, has been detected in pituitary adenoma tissues. In this study, we sought to characterize the transcriptional profiles of PROP1, POU1F1, and TBX19 in functioning and nonfunctioning pituitary adenomas in an attempt to identify their roles in tumorigenesis and hormone hypersecretion. METHODS: RT-qPCR analyses were performed to assess the transcriptional pattern of PROP1, POU1F1, TBX19, and hormone-producing genes in tissue samples of corticotrophinomas (n = 10), somatotrophinomas (n = 8), and nonfunctioning adenomas (n = 6). RESULTS: Compared with normal pituitary tissue, POU1F1 was overexpressed in somatotrophinomas by 3-fold. PROP1 expression was 18-fold higher in corticotrophinomas, 10-fold higher in somatotrophinomas, and 3-fold higher in nonfunctioning adenomas. TBX19 expression was 27-fold higher in corticotrophinomas. Additionally, the level of TBX19 mRNA positively correlated with that of pro-opiomelanocortin (r = 0.49, p = 0.014). CONCLUSIONS: Our data demonstrate that PROP1 is overexpressed in pituitary adenomas, mainly in corticotrophinomas. Together with previously published data showing that patients who harbor PROP1 loss-of-function mutations present a progressive decline in corticotrope function, our results support a role for PROP1 in pituitary tumor development and in the maintenance of cell lineages committed to corticotrophic differentiation.

https://doi.org/10.6061/clinics/2013(06)26 1309 downloads

Modulatory effect of BclI GR gene polymorphisms on the obesity phenotype in Brazilian patients with Cushing's disease
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Moreira, Ricardo P.P.

; Bachega, Tânia A.S.S.

; Machado, Márcio C.

; Mendonca, Berenice B.

; Bronstein, Marcello D.

; Villares Fragoso, Maria Candida B.

Clinics

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may 2013, Volume 68 N. 5 Pages 579 - 585

Abstract: En | Text: En | PDF: En

OBJECTIVES: Patients with Cushing's disease exhibit wide phenotypic variability in the severity of obesity, diabetes and hypertension. In the general population, several glucocorticoid receptor genes (NR3C1) and HSD11B1 polymorphisms are associated with altered glucocorticoid sensitivity and/or metabolism, resulting in an increased or reduced risk of an adverse metabolic profile. Our aim was to analyze the association of NR3C1 and HSD11B1 gene variants with the severity of some clinical and hormonal features of Cushing's disease. METHODS: Sixty-four patients presenting with Cushing's disease were diagnosed based on adrenocorticotrophic hormone levels, high-dose dexamethasone suppression tests and/or inferior petrosal sinus sampling and magnetic resonance imaging. The A3669G, ER22/23EK, N363S BclI-NR3C1 and HSD11B1-rs12086634 variants were screened. RESULTS: The BclI, HSD11B1-rs12086634 and A3669G variants were found in 36%, 19.5% and 14% of alleles, respectively. The N363S and ER22/23EK polymorphisms were identified in heterozygosis once in only two patients (1.5% of alleles). There were no differences in the weight gain or prevalence of diabetes and hypertension in the patients carrying the abovementioned alleles compared to the wild-type carriers. Interestingly, the mean body mass index (BMI) of the BclI carriers was significantly higher than the non-carriers (34.4±7 kg/m2 vs. 29.6±4.7 kg/m2, respectively). None of the polymorphisms were associated with the basal adrenocorticotrophic hormone, FU levels or F level after dexamethasone suppression testing. CONCLUSION: Although Cushing's disease results from increased glucocorticoid secretion, we observed that interindividual variability in the peripheral glucocorticoid sensitivity, mediated by the glucocorticoid receptor, could modulate the obesity phenotype.

https://doi.org/10.6061/clinics/2013(05)01 1503 downloads

Isolated familial somatotropinoma: 11Q13-LOH and gene/protein expression analysis suggests a possible involvement of aip also in non-pituitary tumorigenesis
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Toledo, Rodrigo A.

; Mendonca, Berenice B.

; Fragoso, Maria Candida B. V.

; Soares, Iberê C.

; Almeida, Madson Q.

; Moraes, Michelle B.

; Lourenço-Jr, Delmar M.

; Alves, Venâncio A. F.

; Bronstein, Marcello D.

; Toledo, Sergio P. A.

Clinics

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2010, Volume 65 N. 4 Pages 407 - 415

Abstract: En | Text: En | PDF: En

OBJECTIVE: Non-pituitary tumors have been reported in a subset of patients harboring germline mutations in the aryl hydrocarbon receptor-interacting protein (AIP) gene. However, no detailed investigations of non-pituitary tumors of AIP-mutated patients have been reported so far. PATIENTS: We examined a MEN1- and p53-negative mother-daughter pair with acromegaly due to somatotropinoma. Subsequently, the mother developed a large virilizing adrenocortical carcinoma and a grade II B-cell non-Hodgkin's lymphoma. DESIGN: Mutational analysis was performed by automated sequencing. Loss-of-heterozygosity (LOH) analysis was carried out by sequencing and microsatellite analysis. AIP expression was assessed through quantitative PCR (qPCR) and immunohistochemistry. RESULTS: The functional inactivating mutation c.241C>T (R81X), which blocks the AIP protein from interacting with phosphodiesterase 4A (PDE4A), was identified in the heterozygous state in the leukocyte DNA of both patients. Analyzing the tumoral DNA revealed that the AIP wild-type allele was lost in the daughter's somatotropinoma and the mother's adrenocortical carcinoma. Both tumors displayed low AIP protein expression levels. Low AIP gene expression was confirmed by qPCR in the adrenocortical carcinoma. No evidence of LOH was observed in the DNA sample from the mother's B-cell lymphoma, and this tumor displayed normal AIP immunostaining. CONCLUSIONS: Our study presents the first molecular analysis of non-pituitary tumors in AIP-mutated patients. The finding of AIP inactivation in the adrenocortical tumor suggests that further investigation of the potential role of this recently identified tumor suppressor gene in non-pituitary tumors, mainly in those tumors in which the cAMP and the 11q13 locus are implicated, is likely to be worthwhile.

2685 downloads

Theoretical studies of the tautomerism in 3-(2-R-Phenylhydrazono)-naphthalene- 1,2,4-triones: synthesis of copper(II) complexes and studies of antibacterial and antitumor activities
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Francisco, Acácio I.

; Vargas, Maria D.

; Fragoso, Thaís P.

; Carneiro, J. Walkimar de M.

; Casellato, Annelise

; Silva, Fernando de C. da

; Ferreira, Vitor F.

; Barbosa, Jussara P.

; Pessoa, Claudia

; Costa-Lotufo, Letícia V.

; Marinho Filho, José D. B.

; Moraes, Manoel O. de

; Mangrich, Antonio S.

Journal of the Brazilian Chemical Society

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2010, Volume 21 N. 7 Pages 1293 - 1302

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Cálculos teóricos utilizando os funcionais B3LYP e PBE1PBE e as bases 6-31G(d) e 6-311+G(2d,p) para o sistema 3-(2-fenil-hidrazona)-naftaleno-1,2,4-triona, em solução (dmso) e em fase gasosa, evidenciaram, em ambos os casos, a maior estabilidade da forma ceto-hidrazona (rotâmeros Ia e Ib) comparada às formas enol-azo (rotâmeros IIa/IIb, por volta de 14 kcal mol-1) e III (aproximadamente 6 kcal mol-1). A natureza do substituinte no grupo fenil não influenciou a estabilidade relativa dos tautômeros. Estes resultados foram confirmados por dados espectroscópicos dos derivados HL1-HL13, sintetizados a partir da 2-hidroxi-1,4-naftoquinona e arilaminas (R = 4-OMe, 4-N2-C6H5, 4-Cl, 4-I, 3-I, 2-I, 4-COOH, 3-COOH, 4-CN, 3-CN, 4-NO2, 3-NO2, 2-NO2). A avaliação da atividade anticâncer in vitro (contra linhagens de células cancerosas SF-295, HCT-8, MDAMB-435 e HL-60) e bactericida (Bacillus cereus, Bacillus subtilis, Enterococcus faecalis, Staphylococcus aureus, Escherichia coli, Klebsiella pneumonia e Pseudomonas aeruginosa) dos compostos HL1-HL13 e dos seus respectivos complexos de cobre(II), [Cu(L1-13)2], foi avaliada. Em geral a atividade bactericida foi baixa, exceto para o derivado HL5 (R = 3-I), mais ativo do que o controle; entretanto, seu complexo não foi ativo. Por outro lado, a complexação levou, em geral, ao aumento da atividade antitumoral dos pré-ligantes. O complexo [Cu(L13)2] (R = 3-NO2) apresentou moderada citotoxicidade contra leucemia humana (HL-60).

DFT calculations using the B3LYP and PBE1PBE functionals with the standard 6-31G(d) and 6-311+G(2d,p) basis sets were carried out for the 3-(2-phenylhydrazone)-naphthalene-1,2,4-trione system in solution (dmso) and in the gas phase, and showed the keto-hydrazone forms (rotamers Ia and Ib) to be more stable than the enol-azo forms (rotamers IIa and IIb, by about 14 kcal mol-1) and III (by approximately 6 kcal mol-1), independently of the nature of the substituent in the phenylene ring. These results were confirmed by spectroscopic data on the derivatives HL1-HL13, obtained from 2-hydroxy-1,4-naphthoquinone and arylamines (R = 4-OMe, 4-N2-C6H5, 4-Cl, 4-I, 3-I, 2-I, 4-COOH, 3-COOH, 4-CN, 3-CN, 4-NO2, 3-NO2, 2-NO2). The in vitro antitumor (against SF-295, HCT-8, MDAMB-435 and HL-60 cancer cell lines) and antibacterial activities (Bacillus cereus, Bacillus subtilis, Enterococcus faecalis, Staphylococcus aureus, Escherichia coli, Klebsiella pneumonia and Pseudomonas aeruginosa) of compounds HL1-HL13 and of their respective copper(II) complexes, [Cu(L1-13)2], were tested. In general, these compounds exhibited low antibacterial activity, except for HL5 (R = 3-I), more active than the control; however, the corresponding complex was inactive. In contrast, increased cytotoxicity was observed upon complexation. Complex [Cu(L13)2] (R = 3-NO2) presented moderate cytotoxicity against human leukemia (HL-60).

4380 downloads

Flow-batch analyser for preparation of calibration standard mixtures in simultaneous multicomponent spectrometric analysis
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Visani, Valeria

; Barros, Sara R. R. C.

; Dantas Filho, Heronides A.

; Almeida, Luciano F.

; Lima, Ricardo A. C.

; Fragoso, Wallace D.

; Saldanha, Teresa C. B.

; Araújo, Mário C. U.

Eclética Química

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2009, Volume 34 N. 2 Pages 37 - 47

Abstract: En | Text: En | PDF: En

The application of multivariate calibration techniques to multicomponent analysis by UV-VIS molecular absorption spectrometry is a powerful tool for simultaneous determination of several chemical species. However, when this methodology is accomplished manually, it is slow and laborious, consumes high amounts of reagents and samples, is susceptible to contaminations and presents a high operational cost. To overcome these drawbacks, a flow-batch analyser is proposed in this work. This analyser was developed for automatic preparation of standard calibration and test (or validation) mixtures. It was applied to the simultaneous determination of Cu2+, Mn2+ and Zn2+ in polyvitaminic and polymineral pharmaceutical formulations, using 4-(2-piridilazo) resorcinol as reagent and a UV-VIS spectrophotometer with a photodiode array detector. The results obtained with the proposed system are in good agreement with those obtained by flame atomic absorption spectrometry, which was employed as reference method. With the proposed analyser, the preparation of calibration and test mixtures can be accomplished about four hours, while the manual procedure requires at least two days. Moreover, it consumes smaller amounts of reagents and samples than the manual procedure. After the preparation of calibration and test mixtures, 60 samples h-1 can be carried out with the proposed flow-batch analyser.

1698 downloads

Biology of Brontocoris tabidus (Heteroptera: Pentatomidae) fed with Musca domestica (Diptera: Muscidae) larvae
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Jusselino-Filho, P.

; Zanuncio, J. C.

; Fragoso, D. B.

; Serrão, J. E

; Lacerda, M. C.

Brazilian Journal of Biology

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aug 2003, Volume 63 N. 3 Pages 463 - 468

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

A performance reprodutiva e o desenvolvimento de Brontocoris tabidus (Signoret) (Heteroptera: Pentatomidae) alimentado com larvas de Musca domestica L. (Diptera: Muscidae) foram investigados. A duração da fase ninfal desse predador foi de 31,2 dias, com sobrevivência de 44,1%. Os períodos de pré-oviposição e de incubação e o número de ovos por postura foram de 8,14 dias, 5,6 dias e 45,4 dias, respectivamente. B. tabidus apresentou viabilidade de ovos de 44,7%. A longevidade das fêmeas desse predador foi de 18,4 dias. Esses resultados são discutidos com ênfase ao uso de M. domestica em criação massal e manutenção de colônias de B. tabidus em condições de laboratório.

Development and reproductive performance of Brontocoris tabidus (Signoret) (Heteroptera: Pentatomidae) fed with Musca domestica L. (Diptera: Muscidae) larvae was evaluated. Duration of the nymphal phase of this predator was 31.2 days, with a 44.1% survival rate. Preoviposition and egg incubation periods and number of eggs/egg mass were 8.14 days, 5.6 days, and 45.4, respectively. B. tabidus presented 44.7% egg viability. Female longevity of this predator was 18.4 days. Results are discussed based on this prey use in mass rearing and maintenance of colonies of B. tabidus under laboratory conditions.

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aff_country	country code of the author's affiliation
aff_institution	author affiliation institution
volume	article volume
issue	article issue
elocation	elocation
doi	DOI number
issn	journal ISSN
in	SciELO colection code (e.g. scl - Brasil, col - Colômbia)
use_license	article usage license code

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