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1.
Sci Rep ; 14(1): 16028, 2024 Jul 11.
Artigo em Inglês | MEDLINE | ID: mdl-38992070

RESUMO

We aimed to determine the chemical profile and unveil Anadenanthera colubrina (Vell.) Brenan standardized extract effects on inflammatory cytokines expression and key proteins from immunoregulating signaling pathways on LPS-induced THP-1 monocyte. Using the RT-PCR and Luminex Assays, we planned to show the gene expression and the levels of IL-8, IL-1ß, and IL-10 inflammatory cytokines. Key proteins of NF-κB and MAPK transduction signaling pathways (NF-κB, p-38, p-NF-κB, and p-p38) were detected by Simple Western. Using HPLC-ESI-MSn (High-Performance Liquid-Chromatography) and HPLC-HRESIMS, we showed the profile of the extract that includes an opus of flavonoids, including the catechins, quercetin, kaempferol, and the proanthocyanidins. Cell viability was unaffected up to 250 µg/mL of the extract (LD50 = 978.7 µg/mL). Thereafter, the extract's impact on the cytokine became clear. Upon LPS stimuli, in the presence of the extract, gene expression of IL-1ß and IL-10 were downregulated and the cytokines expression of IL-1ß and IL-10 were down an upregulated respectively. The extract is involved in TLR-4-related NF-κB/MAPK pathways; it ignited phosphorylation of p38 and NF-κB, orchestrating a reduced signal intensity. Therefore, Anadenanthera colubrina's showed low cytotoxicity and profound influence as a protector against the inflammation, modulating IL-1ß and IL-10 inflammatory cytokines gene expression and secretion by regulating intracellular NF-κB and p38-MAPK signaling pathways.


Assuntos
Inflamação , Lipopolissacarídeos , Sistema de Sinalização das MAP Quinases , NF-kappa B , Extratos Vegetais , Proteínas Quinases p38 Ativadas por Mitógeno , NF-kappa B/metabolismo , Humanos , Extratos Vegetais/farmacologia , Proteínas Quinases p38 Ativadas por Mitógeno/metabolismo , Inflamação/metabolismo , Inflamação/induzido quimicamente , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Citocinas/metabolismo , Fabaceae/química , Transdução de Sinais/efeitos dos fármacos , Células THP-1 , Sobrevivência Celular/efeitos dos fármacos
2.
Braz J Microbiol ; 53(4): 1969-1977, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36224461

RESUMO

The present study aimed to compare the oral Candida rate between infected and uninfected children with the human immunodeficiency virus (HIV), as well as analyze the association between Candida spp. and predisposing factors of colonization, like oral biofilm index, caries experience, and laboratory markers of AIDS progression. A cross-sectional study was employed. Candida species were identified and quantified from saliva samples of 50 HIV-infected and 50 uninfected children. Biofilm index and decayed, missing, and filled teeth (dmft/DMFT) indices were assessed by oral clinical examinations. Additionally, CD4+ T lymphocyte count and viral load were obtained from medical records of the HIV-infected children. Candida species were cultured from 74% of the HIV-infected children and 46% of uninfected ones (p = 0.0076). Candida albicans and Candida parapsilosis were the most frequently isolated species in both studied groups. The isolation of Candida species was significantly higher in HIV-infected children with CD4 ≤ 15% (p = 0.0146); it had influence of mature oral biofilm and the caries index (dmft + DMFT ≥ 8) (p < 0.05) and was associated with the plasma viral load. The present data show that the HIV infection, oral biofilm index, caries experience, and laboratory markers of AIDS progression exert an influence on the prevalence of oral Candida in children.


Assuntos
Síndrome da Imunodeficiência Adquirida , Cárie Dentária , Infecções por HIV , Criança , Humanos , Infecções por HIV/complicações , Candida , Estudos Transversais , Síndrome da Imunodeficiência Adquirida/complicações , Suscetibilidade à Cárie Dentária , Biofilmes , Biomarcadores , Progressão da Doença , Cárie Dentária/complicações
3.
Nat Prod Res ; 36(6): 1621-1625, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33729064

RESUMO

We reported the in vitro anti-HIV-1 activity, cytotoxicity, cytokines expression and chemical profile of Anadenanthera colubrina. Cytotoxicity was evaluated on TZM-bl, HL2/3 cells and macrophages. Anti-HIV-1 activity was determined by Luciferase assay (TZM-bl cells) and by HIV-p24 quantification (macrophages) assessed by ELISA. TZM-bl and HL2/3 cells were used to determine cell-cell fusion inhibition. Cytokines expression was assessed by ELISA. Chemical composition was determined by Gas Chromatography Coupled to Mass Spectrometry. At 66.6 µg/mL, the extract maintained the cell viability above 90%. At 33.28 µg/mL, the extract reduced 82.8% of HIV-1 infection (TZM-bl cells) and HIV-p24 expression (macrophages). The extract inhibited approximately 70% of TZM-bl and HL2/3 cells fusion. Extract did't induce inflammatory response. Phytochemical analysis showed presence of flavonoid, phenolic acids, fatty acids and sugars. This is the first study presenting the anti-HIV effect of A. colubrina, showing low cytotoxicity and no inflammatory stimuli, important requirements for a microbicide development.


Assuntos
Colubrina , Infecções por HIV , HIV-1 , Cromatografia Gasosa-Espectrometria de Massas , Humanos , Extratos Vegetais/farmacologia
4.
Front Pharmacol ; 12: 629778, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34168555

RESUMO

Oral candidiasis is one of the most common fungal infections in humans. Its incidence has increased widely, as well as the antifungal resistance, demanding for the search for novel antifungal therapeutic agents. Anadenanthera colubrina (Vell.) Brenan is a plant species that has been proven to possess pharmacological effects, including antifungal and anti-inflammatory activities. This study evaluated in vitro the effects of standardized A. colubrina extract on virulence factors of Candida albicans and its regulation on immune response through C. albicans-host interaction. Antifungal activity was evaluated by Broth Microdilution Method against reference Candida strains (C. albicans, C. glabrata, C. tropicalis; C. dubliniensis). Anti-biofilm effect was performed on C. albicans mature biofilm and quantified by CFU/mL/g of biofilm dry weight. Proleotlytic enzymatic activities of proteinase and phospholipase were assessed by Azocasein and Phosphatidylcholine assays, respectively. Cytotoxicity effect was determined by Cell Titer Blue Viability Assay on Human Gingival Fibroblasts. Co-cultured model was used to analyze C. albicans coexisting with HGF by Scanning Electron Microscopy and fluorescence microscopies; gene expression was assessed by RT-PCR of C. albicans enzymes (SAP-1, PLB-1) and of host inflammatory cytokines (IL-6, IL-8, IL-1ß, IL-10). Cytokines secretion was analysed by Luminex. The extract presented antifungal effect with MIC<15.62 µg/ml against Candida strains. Biofilm and proteolytic activity were significant reduced at 312.4 µg/ml (20 × 15.62 µg/ml) extract concentration. Cell viability was maintained higher than 70% in concentrations up to 250 µg/ml (LD50 = 423.3 µg/ml). Co-culture microscopies demonstrated a substantial decreased in C. albicans growth and minimal toxicity against host cells. Gene expressions of SAP-1/PLB-1 were significantly down-regulated and host immune response was modulated by a significant decreased on IL-6 and IL-8 cytokines secretion. A. colubrina had antifungal activity on Candida strains, antibiofilm, and anti-proteolytic enzyme effects against C. albicans. Presented low cytotoxicity to the host cells and modulatory effects on the host immune response.

5.
Braz. J. Pharm. Sci. (Online) ; 58: e20417, 2022. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1403712

RESUMO

Abstract Schinus terebinthifolia Raddi green fruits essential oil (EO) was evaluated regarding its phytochemical profile, antimicrobial and cytotoxic activities, and toxicity. Gas chromatography with mass spectrometry was applied to identify its constituents, thereafter the minimum inhibitory concentration, minimum bactericidal and fungicidal concentrations, and its antibiofilm activity were evaluated. The EO cytotoxicity was assessed in tumor and non-tumor human cells, and in vivo toxicity was evaluated in a Galleria mellonella model. The major constituents of S. terebinthifolia EO were alpha-phellandrene and beta-phellandrene. The EO had a weak activity against all strains of Candida albicans (MIC 1000µg/mL) and had no activity against non-albicans strains, bacteria, and C. albicans biofilm. Cytostatic activity against all tumor cell lines was shown. Additionally, cell viability remained at EO concentrations up to 62.5 µg/mL. At 16 mg/mL, 50% hemolysis was observed, and it had low toxicity in vivo. Overall, the S. terebinthifolia EO was characterized by low antimicrobial and antibiofilm activities, with no evidence of toxicity to human tumor and non-tumor cells


Assuntos
Óleos Voláteis/análise , Anacardiaceae/anatomia & histologia , Frutas/classificação , Plantas Medicinais/efeitos adversos , Toxicidade , Cromatografia Gasosa-Espectrometria de Massas/métodos
6.
Artigo em Inglês | LILACS, BBO | ID: biblio-1135565

RESUMO

Abstract Objective: To perform an in vitro analysis of antibacterial and antifungal potential of an alcoholic extract from the leaves of Guapira Graciliflora Mart. against oral microorganisms and determine its chemical composition. Material and Methods: A hydroalcoholic extract of the leaves form G. graciliflora was obtained through maceration, vacuum concentration and freeze-drying. Antibacterial and antifungal activities were evaluated against Streptococcus mutans, Streptococcus salivarius, Streptococcus oralis, Streptococcus parasanguinis, Streptococcus mitis and strains of Candida albicans using broth microdilution method. Phytochemical analysis determined the total phenolic compounds, protein concentration and total of sugars present in the extract. Results: G. Graciliflora demonstrated antifungal activity against the LM 11 and LM 410 clinical isolates of C. albicans (MIC 0.5 mg/mL and 2 mg/mL, respectively). The other microorganisms tested were resistant to the extract. The phytochemical analysis revealed 3% proteins, 13% total sugars and 17% phenolic compounds. Conclusion: G. Graciliflora has antifungal activity against clinical strains of C. albicans and exhibits proteins, sugars and phenolic compounds in its chemical composition.


Assuntos
Plantas Medicinais , Técnicas In Vitro , Extratos Vegetais/farmacologia , Anti-Infecciosos , Antibacterianos , Candida albicans , Testes de Sensibilidade Microbiana , Streptococcus oralis , Streptococcus mitis , Streptococcus salivarius , Antifúngicos
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