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Prado MC, Campos P, Pasetto S, Marciano MA, Sinhoreti MAC, Geraldeli S, de-Jesus-Soares A, Abuna G. Development of nanobiosilicate, tricalcium phosphate and chlorhexidine materials for biomineralization with crystallographic similarity to hydroxyapatite and biomodified collagen. Dent Mater 2024; 40:267-275. [PMID: 37989699 DOI: 10.1016/j.dental.2023.11.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 09/24/2023] [Accepted: 11/14/2023] [Indexed: 11/23/2023]
Abstract
OBJECTIVES The aim of this work is to test experimental cements, doped with a silicate based bioactive nanoparticle (NanoBiosilicate). Methods, we synthesized a glass nanoparticle by Sol-Gel Stöber method, used to be incorporated in a dental material for endodontic uses. MATERIALS AND METHODS We assess the mineralizing properties and biocompatibility. Besides the crystallography characterization of the resultant new crystals. Results, After analysis, and comparison with commercial materials, the material tested was similar in mechanical properties required by ISO, The ion release was effective after 2 hr. of setting and the novel material was cell compatible accepted by ISO. RESULTS We found new formed Calcium Phosphate peaks in the spectroscopic analysis (FTIR), remarkably the crystals formed were comparable to hydroxyapatite when analyzed with a Selected Area Electron Diffractometer, with rings of 2.84 Å for 002, and the 2.77 Å is also visible for 210. The 6.83 Å and 6.88 Å, for respective 222 and 004. The incorporation of Chlorhexidine was not detrimental for this property, Significance, the features mentioned represented a progress in biomineralization field that was associated to an improved mineral structure formation with increased crystallographic similarity to natural hydroxyapatite. When chlorhexidine was added a favorable biomodification of the remaining collagen in dentinal walls and antimicrobial activity potential were also observed.
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Affiliation(s)
- Marina C Prado
- Department of Restorative Dentistry - Endodontics Division, Piracicaba Dental School - State University of Campinas (FOP-UNICAMP), Piracicaba, SP, Brazil; Department of General Dentistry, School of Dental Medicine - East Carolina University (ECU-SoDM), Greenville, NC, USA.
| | - Paulo Campos
- Department of Restorative Dentistry - Dental Materials Division, Piracicaba Dental School - State University of Campinas (FOP-UNICAMP), Piracicaba, SP, Brazil
| | - Silvana Pasetto
- Department of Biology, East Carolina University (ECU-SoDM), Greenville, NC, USA
| | - Marina A Marciano
- Department of Restorative Dentistry - Endodontics Division, Piracicaba Dental School - State University of Campinas (FOP-UNICAMP), Piracicaba, SP, Brazil
| | - Mário A C Sinhoreti
- Department of Restorative Dentistry - Dental Materials Division, Piracicaba Dental School - State University of Campinas (FOP-UNICAMP), Piracicaba, SP, Brazil
| | - Saulo Geraldeli
- Department of General Dentistry, School of Dental Medicine - East Carolina University (ECU-SoDM), Greenville, NC, USA
| | - Adriana de-Jesus-Soares
- Department of Restorative Dentistry - Endodontics Division, Piracicaba Dental School - State University of Campinas (FOP-UNICAMP), Piracicaba, SP, Brazil
| | - Gabriel Abuna
- Department of General Dentistry, School of Dental Medicine - East Carolina University (ECU-SoDM), Greenville, NC, USA.
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de Almeida Maia CM, Pasetto S, Silva JPRE, Tavares JF, de Brito Costa EMM, Murata RM. Anandenanthera colubrina (Vell.) Brenan as an inhibitor of HIV-1 BaL infection. Nat Prod Res 2022; 36:1621-1625. [PMID: 33729064 PMCID: PMC9078876 DOI: 10.1080/14786419.2021.1892097] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
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.
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Affiliation(s)
- Carolina Medeiros de Almeida Maia
- School of Dental Medicine School of Dental Medicine, Department of Foundational Sciences, East Carolina University, Greenville, North Carolina, United States of America,Postgraduate Program in Dentistry, State University of Paraiba, Campina Grande, Paraiba, Brazil
| | - Silvana Pasetto
- School of Dental Medicine School of Dental Medicine, Department of Foundational Sciences, East Carolina University, Greenville, North Carolina, United States of America
| | - Joanda Paola Raimundo e Silva
- Postgraduate Program in Natural and Synthetic Bioactive Products, Federal University of Paraiba, João Pessoa, Paraiba, Brazil
| | - Josean Fechine Tavares
- Postgraduate Program in Natural and Synthetic Bioactive Products, Federal University of Paraiba, João Pessoa, Paraiba, Brazil
| | | | - Ramiro Mendonça Murata
- School of Dental Medicine School of Dental Medicine, Department of Foundational Sciences, East Carolina University, Greenville, North Carolina, United States of America
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da Silva MP, Silva VDO, Pasetto S, Ando-Suguimoto ES, Kawamoto D, Mata GMSC, Murata RM, Mayer MPA, Chen C. Aggregatibacter actinomycetemcomitans Outer Membrane Proteins 29 and 29 Paralogue Induce Evasion of Immune Response. Front Oral Health 2022; 3:835902. [PMID: 35187533 PMCID: PMC8851312 DOI: 10.3389/froh.2022.835902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 01/03/2022] [Indexed: 11/22/2022] Open
Abstract
Aggregatibacter actinomycetemcomitans (Aa) is abundant within the microbial dysbiotic community of some patients with periodontitis. Aa outer membrane protein 29 (OMP29), a member of the OMPA family, mediates the invasion of Aa to gingival epithelial cells (GECs). This study evaluated the effect of OMP29 and its paralogue OMP29par on the response of GECs to Aa. The omp29 or/and omp29par deletion mutants AaΔ29, AaΔ29P, and AaΔ29Δ29P were constructed, and recombinant Aa OMP29His was obtained. Microarray analysis and the evaluation of cxcl-8 gene expression were performed to examine the response of GECs line OBA-09 to Aa and its mutants. The expression of cxcl-8 and its product CXCL-8 was examined in LPS-stimulated OBA-09 cells with Aa OMP29His. Proteomics analysis showed that the deletion of omp29 led to overexpression of both OMP29par and another membrane protein OMP39, the expression of which was further increased in AaΔ29Δ29P. OBA-09 cells challenged with AaΔ29Δ29P exhibited a higher expression of cxcl-8 in comparison to wildtype Aa strain AaD7S or single-deletion mutants AaΔ29 or AaΔ29P. LPS-stimulated OBA-09 cells challenged with Aa OMP29His showed reduced expressions of cxcl-8 and its product CXCL-8. OBA-09 cells challenged with AaΔ29Δ29P in comparison to Aa strain AaD7S resulted in higher expressions of genes involved in apoptosis and inflammatory response such as bcl2, birc3, casp3, c3, ep300, fas, fosb, grb2, il-1α, il-1β, il-6, cxcl-8, nr3c1, prkcq, socs3, and tnfrsf1β and reduced expressions of cd74, crp, faslg, tlr1, and vcam1. The results suggested a novel strategy of Aa, mediated by OMP29 and OMP29par, to evade host immune response by inhibiting CXCL-8 expression and modulating the genes involved in apoptosis and inflammatory response in GECs. Pending further confirmation, the strategy might interfere with the recruitment of neutrophils and dampen the host inflammatory response, leading to a more permissive subgingival niche for bacterial growth.
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Affiliation(s)
- Maike Paulino da Silva
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
- Division of Periodontology, Diagnostic Sciences and Dental Hygiene, Ostrow School of Dentistry of University of Southern California, Los Angeles, CA, United States
| | - Viviam de Oliveira Silva
- Division of Periodontology, Diagnostic Sciences and Dental Hygiene, Ostrow School of Dentistry of University of Southern California, Los Angeles, CA, United States
- Centro Universitário Atenas- UniAtenas, Paracatu, Brazil
| | - Silvana Pasetto
- Division of Periodontology, Diagnostic Sciences and Dental Hygiene, Ostrow School of Dentistry of University of Southern California, Los Angeles, CA, United States
- Department of Comprehensive Oral Health, Adams School of Dentistry, University of North Carolina, Chapel Hill, NC, United States
| | - Ellen Sayuri Ando-Suguimoto
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Dione Kawamoto
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Gardênia Márcia Silva Campos Mata
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
- Instituto de Alimentação e Nutrição, Centro Multidisciplinar UFRJ-Macaé, Universidade Federal do Rio de Janeiro, Macaé, Brazil
| | - Ramiro Mendonça Murata
- Department of Foundational Sciences, School of Dental Medicine of University of East Carolina University, Greenville, NC, United States
| | - Marcia Pinto Alves Mayer
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Casey Chen
- Division of Periodontology, Diagnostic Sciences and Dental Hygiene, Ostrow School of Dentistry of University of Southern California, Los Angeles, CA, United States
- *Correspondence: Casey Chen
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Pasetto S, Enderling H, Gatenby RA, Brady-Nicholls R. Intermittent Hormone Therapy Models Analysis and Bayesian Model Comparison for Prostate Cancer. Bull Math Biol 2021; 84:2. [PMID: 34797430 PMCID: PMC8604892 DOI: 10.1007/s11538-021-00953-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 09/27/2021] [Indexed: 11/26/2022]
Abstract
The prostate is an exocrine gland of the male reproductive system dependent on androgens (testosterone and dihydrotestosterone) for development and maintenance. First-line therapy for prostate cancer includes androgen deprivation therapy (ADT), depriving both the normal and malignant prostate cells of androgens required for proliferation and survival. A significant problem with continuous ADT at the maximum tolerable dose is the insurgence of cancer cell resistance. In recent years, intermittent ADT has been proposed as an alternative to continuous ADT, limiting toxicities and delaying time-to-progression. Several mathematical models with different biological resistance mechanisms have been considered to simulate intermittent ADT response dynamics. We present a comparison between 13 of these intermittent dynamical models and assess their ability to describe prostate-specific antigen (PSA) dynamics. The models are calibrated to longitudinal PSA data from the Canadian Prospective Phase II Trial of intermittent ADT for locally advanced prostate cancer. We perform Bayesian inference and model analysis over the models’ space of parameters on- and off-treatment to determine each model’s strength and weakness in describing the patient-specific PSA dynamics. Additionally, we carry out a classical Bayesian model comparison on the models’ evidence to determine the models with the highest likelihood to simulate the clinically observed dynamics. Our analysis identifies several models with critical abilities to disentangle between relapsing and not relapsing patients, together with parameter intervals where the critical points’ basin of attraction might be exploited for clinical purposes. Finally, within the Bayesian model comparison framework, we identify the most compelling models in the description of the clinical data.
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Affiliation(s)
- S Pasetto
- Department of Integrated Mathematical Oncology, H. Lee Moffitt Cancer and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA.
| | - H Enderling
- Department of Integrated Mathematical Oncology, H. Lee Moffitt Cancer and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA.,Department of Radiation Oncology, H. Lee Moffitt Cancer and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA.,Department of Genitourinary Oncology, H. Lee Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA
| | - R A Gatenby
- Department of Integrated Mathematical Oncology, H. Lee Moffitt Cancer and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA.,Department of Radiology, H. Lee Moffitt Cancer and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA
| | - R Brady-Nicholls
- Department of Integrated Mathematical Oncology, H. Lee Moffitt Cancer and Research Institute, 12902 Magnolia Drive, Tampa, FL, 33612, USA.
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Maia CMDA, Pasetto S, Nonaka CFW, Costa EMMDB, Murata RM. Yeast-Host Interactions: Anadenanthera colubrina Modulates Virulence Factors of C. albicans and Inflammatory Response In Vitro. Front Pharmacol 2021; 12:629778. [PMID: 34168555 PMCID: PMC8217765 DOI: 10.3389/fphar.2021.629778] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 05/25/2021] [Indexed: 01/08/2023] Open
Abstract
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-1β, 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.
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Affiliation(s)
- Carolina Medeiros de Almeida Maia
- Department of Dentistry, Postgraduate Program in Dentistry, State University of Paraiba, Campina Grande, Brazil.,Department of Foundational Sciences, School of Dental Medicine, East Carolina University, Greenville, NC, United States
| | - Silvana Pasetto
- Department of Foundational Sciences, School of Dental Medicine, East Carolina University, Greenville, NC, United States
| | | | | | - Ramiro Mendonça Murata
- Department of Foundational Sciences, School of Dental Medicine, East Carolina University, Greenville, NC, United States
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Abstract
The emphasis of the present study is to evaluate a natural product and the potential microbicide activity using a dual chamber infection method. Malva sylvestris extracts and fractions were screened for anti-HIV activity by measuring the virus-antibody neutralization. Plant extracts with strong antiviral activity working in nanomolar or picomolar range can be used to enhance the activity of synthetic compounds and work as anti-HIV agents. The aqueous fraction (AF) of M. sylvestris demonstrated antiviral activity in a model with epithelial and blood cell lines. The AF showed an effective antiviral potential on the TZM-bl cells with reduction scores higher than 60% of infectivity. Quantification of p24 in the supernatant of the co-culture model demonstrated a reduction in the number of viral particles after AF treatment (p < 0.05). Cytokines were quantified and all signaling inflammatory markers; IL1-alpha, IL-beta, IL-6, IL-8 and GM-CSF (p < 0.05) were modulated by positive control and AF treatments. In particular, IL-6 had lower levels of expression in Malva groups when compared to the Zidovudine positive control group. Natural occurring derivatives of M. sylvestris demonstrated to work inhibiting reverse transcriptase enzyme action. M. sylvestris contains highly potential anti-HIV-1 BaL components and may be considered a potential source for new formulations in the development of topical microbicides.
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Affiliation(s)
- Bruna Benso
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil.,School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, RM, Chile.,Pharmacology and Toxicology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, RM, Chile
| | - Pedro Luiz Rosalen
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Silvana Pasetto
- School of Dental Medicine, Department Foundational Sciences, East Carolina University, Greenville, NC, USA.,Brody School of Medicine, Department of Microbiology and Immunology, East Carolina University, Greenville, NC, USA
| | | | - Verônica Freitas-Blanco
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Ramiro Mendonça Murata
- School of Dental Medicine, Department Foundational Sciences, East Carolina University, Greenville, NC, USA.,Brody School of Medicine, Department of Microbiology and Immunology, East Carolina University, Greenville, NC, USA
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Pasetto S, Viti A, Salgarello M, Clementi V, Severi F. 324. FDG-PET texture analysis in NSCLC: Metabolic-pathological correlations. Phys Med 2018. [DOI: 10.1016/j.ejmp.2018.04.333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Silva VDO, Pereira LJ, Pasetto S, da Silva MP, Meyers JC, Murata RM. Effects of Monolaurin on Oral Microbe-Host Transcriptome and Metabolome. Front Microbiol 2018; 9:2638. [PMID: 30467497 PMCID: PMC6237204 DOI: 10.3389/fmicb.2018.02638] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 10/16/2018] [Indexed: 11/13/2022] Open
Abstract
The aim of this in vitro study was to evaluate the effects of monolaurin against Aggregatibacter actinomycetemcomitans (Aa) and determine their effects on the host transcriptome and metabolome, using an oral cell/bacteria co-culture dual-chamber model to mimic the human periodontium. For this, the Aa, was applied to cross the monolayer of epithelial keratinocytes (OBA-9) to reach the fibroblasts layer (HGF-1) in the basal chamber. The Monolaurin treatments (25 or 50 μM) were added immediately after the inoculation of the dual-chamber with Aa. After 24 h, the transcriptional factors and metabolites produced were quantified in the remaining cell layers (insert and basal chamber) and in supernatant released from the cells. The genes IL-1α, IL-6, IL-18, and TNF analyzed in HGF-1 concentrations showed a decreased expression when treated with both concentration of Monolaurin. In keratinocytes, the genes IL-6, IL-18, and TNF presented a higher expression and the expression of IL-1α decreased when treated with the two cited concentrations. The production of glycerol and pyruvic acid increased, and the 2-deoxytetronic acid NIST, 4-aminobutyric acid, pinitol and glyceric acid, presented lower concentrations because of the treatment with 25 and/or 50 μM of Monolaurin. Use of monolaurin modulated the immune response and metabolite production when administered for 24 h in a dual-chamber model inoculated with A. actinomycetemcomitans. In summary, this study indicates that monolaurin had antimicrobial activity and modulated the host immune response and metabolite production when administered for 24 h in a dual-chamber model inoculated with A. actinomycetemcomitans.
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Affiliation(s)
- Viviam de Oliveira Silva
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, Brazil.,Division of Periodontology, Diagnostic Sciences, Dental Hygiene and Biomedical Science, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, United States
| | | | - Silvana Pasetto
- Division of Periodontology, Diagnostic Sciences, Dental Hygiene and Biomedical Science, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, United States
| | - Maike Paulino da Silva
- Division of Periodontology, Diagnostic Sciences, Dental Hygiene and Biomedical Science, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, United States
| | - Jered Cope Meyers
- Department Foundational Sciences, School of Dental Medicine, East Carolina University, Greenville, NC, United States
| | - Ramiro Mendonça Murata
- Department Foundational Sciences, School of Dental Medicine, East Carolina University, Greenville, NC, United States.,Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC, United States
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Bertoglio P, Viti A, Salgarello M, Pasetto S, Bogina G, Terzi A. P1.08-005 Preoperative Analysis of 18FDG-PET Features May Predict Loco-Regional Invasiveness in NSCLC. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Inno A, Salgarello M, Severi F, Pasetto S, Romano L, Carbognin G, Marchetti F, Gorgoni G, Casolino R, Cassandrini P, Cirillo M, Magarotto R, Modena A, Nicodemo M, Picece V, Turazza M, Alongi F, Valerio M, Lunardi G, Gori S. 18F-sodium fluoride (18F-NaF) PET/CT scan for the assessment of brain metastases (BMs). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx431.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ruggieri R, Naccarato S, Stavrev P, Stavreva N, Pasetto S, Salamone I, Alongi F. EP-1483: Reference dosimetry of FFF MV photon beams: a correction for intra-Farmer ion chamber dose gradients. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32733-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Inno A, Lunardi G, Turazza M, Pasetto S, Severi F, Gorgoni G, Bogina G, Bortesi L, Russo A, Alongi F, Fiorentino A, Duranti S, Massocco A, Marchetti F, Valerio M, Salgarello M, Gori S. FDG-PET/CT as a predictor of pathological complete response (pCR) in breast cancer (BC) patients (pts) treated with neoadjuvant chemotherapy (NAC): a single center retrospective study. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv336.20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Pasetto S, Pardi V, Murata RM. Anti-HIV-1 activity of flavonoid myricetin on HIV-1 infection in a dual-chamber in vitro model. PLoS One 2014; 9:e115323. [PMID: 25546350 PMCID: PMC4278898 DOI: 10.1371/journal.pone.0115323] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Accepted: 11/23/2014] [Indexed: 11/18/2022] Open
Abstract
HIV infection by sexual transmission remains an enormous global health concern. More than 1 million new infections among women occur annually. Microbicides represent a promising prevention strategy that women can easily control. Among emerging therapies, natural small molecules such as flavonoids are an important source of new active substances. In this study we report the in vitro cytotoxicity and anti-HIV-1 and microbicide activity of the following flavonoids: Myricetin, Quercetin and Pinocembrin. Cytotoxicity tests were conducted on TZM-bl, HeLa, PBMC, and H9 cell cultures using 0.01-100 µM concentrations. Myricetin presented the lowest toxic effect, with Quercetin and Pinocembrin relatively more toxic. The anti-HIV-1 activity was tested with TZM-bl cell plus HIV-1 BaL (R5 tropic), H9 and PBMC cells plus HIV-1 MN (X4 tropic), and the dual tropic (X4R5) HIV-1 89.6. All flavonoids showed anti-HIV activity, although Myricetin was more effective than Quercetin or Pinocembrin. In TZM-bl cells, Myricetin inhibited ≥90% of HIV-1 BaL infection. The results were confirmed by quantification of HIV-1 p24 antigen in supernatant from H9 and PBMC cells following flavonoid treatment. In H9 and PBMC cells infected by HIV-1 MN and HIV-1 89.6, Myricetin showed more than 80% anti-HIV activity. Quercetin and Pinocembrin presented modest anti-HIV activity in all experiments. Myricetin activity was tested against HIV-RT and inhibited the enzyme by 49%. Microbicide activities were evaluated using a dual-chamber female genital tract model. In the in vitro microbicide activity model, Myricetin showed promising results against different strains of HIV-1 while also showing insignificant cytotoxic effects. Further studies of Myricetin should be performed to identify its molecular targets in order to provide a solid biological foundation for translational research.
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Affiliation(s)
- Silvana Pasetto
- University of Southern California, Ostrow School of Dentistry, Division of Periodontology Diagnostic Sciences, Dental Hygiene & Biomedical Science, Los Angeles, California, United States of America
| | - Vanessa Pardi
- University of Southern California, Ostrow School of Dentistry, Division of Periodontology Diagnostic Sciences, Dental Hygiene & Biomedical Science, Los Angeles, California, United States of America
| | - Ramiro Mendonça Murata
- University of Southern California, Ostrow School of Dentistry, Division of Periodontology Diagnostic Sciences, Dental Hygiene & Biomedical Science, Los Angeles, California, United States of America
- * E-mail:
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Pasetto S, Grebel E. Thick disk kinematics from RAVE and the solar motion. EPJ Web of Conferences 2012. [DOI: 10.1051/epjconf/20121905008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Valentini M, Munari U, Saguner T, Freeman K, Pasetto S, Montalbán J, Grebel E. First results for the solar neighborhood of the Asiago Red Clump Survey. EPJ Web of Conferences 2012. [DOI: 10.1051/epjconf/20121905005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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De Oliveira NFP, Andia DC, Planello AC, Pasetto S, Marques MR, Nociti FH, Line SRP, De Souza AP. TLR2 and TLR4 gene promoter methylation status during chronic periodontitis. J Clin Periodontol 2011; 38:975-83. [PMID: 21899586 DOI: 10.1111/j.1600-051x.2011.01765.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AIM The objective of this study was to analyse the status of DNA methylation in the promoter region of the toll-like receptor (TLR)2 and TLR4 genes in gingival tissue samples from healthy subjects, smokers and non-smokers affected by chronic periodontitis. MATERIAL AND METHODS Genomic DNA and total RNA were purified from gingival tissue using the TRIZOL reagent protocol. Genomic DNA was then digested by methylation-sensitive restriction enzymes, amplified by polymerase chain reaction (PCR), electrophoresed on a 10% polyacrylamide gel and stained using SYBR Gold. Real-time PCR was also performed to verify the transcript levels. RESULTS The CpG dinucleotides analysed were observed to be unmethylated in the majority of DNA samples of the three groups and statistical differences were not found among groups (p>0.05). However, a trend towards methylation was observed in the TLR2 HhaI site in the samples of the periodontitis non-smoker groups. In fact, the analysis of all CpG sites together shows which complete methylation is observed in the shortest level in the samples of periodontitis non-smoker group. The analysis of transcript levels demonstrated no difference among groups (p>0.05). CONCLUSION The results demonstrated major unmethylation of the TLR4 gene promoter in all groups. However, the results for the TLR2 gene promoter are inconclusive; this gene was found as a mosaic of methylated and unmethylated DNA in the majority of samples of the three groups and we also observed a trend towards the DNA methylation of CpG sites recognized by the HhaI enzyme.
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Affiliation(s)
- Naila Francis Paulo De Oliveira
- Department of Morphology, Laboratory of Molecular Biology, Division of Histology, Piracicaba Dental School, University of Campinas-UNICAMP, Piracicaba, São Paulo, SP, Brazil
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Ereno C, Guimarães SAC, Pasetto S, Herculano RD, Silva CP, Graeff CFO, Tavano O, Baffa O, Kinoshita A. Latex use as an occlusive membrane for guided bone regeneration. J Biomed Mater Res A 2010; 95:932-9. [DOI: 10.1002/jbm.a.32919] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Sant'Anna LB, Tosello DO, Pasetto S. Effects of maternal ethanol intake on immunoexpression of epidermal growth factor in developing rat mandibular molar. Arch Oral Biol 2005; 50:625-34. [PMID: 15892948 DOI: 10.1016/j.archoralbio.2004.12.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2004] [Accepted: 12/13/2004] [Indexed: 11/29/2022]
Abstract
OBJECTIVE A polyclonal antibody was used to investigate the effects of ethanol ingestion before and during pregnancy, in the expression of EGF on dentinogenesis and amelogenesis of rat mandibular first molar. DESIGN Ethanol was administered to drinking water (treated group) starting at concentrations of 1% and increasing weekly to 5, 10, 15, 20 and 25% (v/v). During week 7, these rats were mated and continued to receive the 25% alcoholic solution, up to delivery. The control group received tap water. On postnatal days 0, 4 and 9, two offspring of each litter were killed, their hemimandibles removed and prepared for paraffin processing and immunohistochemistry. RESULTS At postnatal day 0 the EGF immunoreactivity of the inner enamel epithelium and presecretory ameloblasts was weak when compared to controls. At postnatal day 4 EGF immunoreactivity of the secretory ameloblasts and odontoblasts was only moderate compared to controls. At postnatal day 9 EGF staining of the ameloblasts was weak when compared to controls. CONCLUSIONS These results suggest that, maternal alcoholism interferes with EGF expression during initial dentinogenesis and amelogenesis and in the secretion and maturation of the dentin and enamel, therefore, which may cause a reduction of dentin and enamel formation.
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Affiliation(s)
- Luciana B Sant'Anna
- Department of Morphology, Faculty of Odontology, Campinas University, Avenida Limeira 901, Areiao, 13414-903 Piracicaba, SP, Brazil.
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