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Tiburcio MA, Rocha AR, Romano RA, Inada NM, Bagnato VS, Carlos RM, Buzzá HH. In vitro evaluation of the cis-[Ru(phen) 2(pPDIp)] 2+⁎⁎ complex for antimicrobial photodynamic therapy against Sporothrix brasiliensis and Candida albicans. J Photochem Photobiol B 2022; 229:112414. [PMID: 35276578 DOI: 10.1016/j.jphotobiol.2022.112414] [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] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 02/10/2022] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Photodynamic therapy (PDT) activates a photosensitizer by visible light to generate cytotoxic oxygen species that lead to cell death. With proper illumination, PDT is often used in applications on superficial and sub-surface lesions. Sporotrichosis infection occurs by Sporothrix fungi which causes a skin wound, worsened by Candida albicans infections. This study investigated the photosensitizing efficiency of the Ru(phen)2(pPDIp)(PF6)2 complex, RupPDIp, against S. brasiliensis and C. albicans. MATERIAL AND METHODS RupPDIp efficiency against these fungi was tested using 450 nm (blue light and 36 J/cm2) and 525 nm (green light, 25.2 J/cm2) at 0.05-20 μM concentrations. To ensure PDT effectiveness, control groups were tested in the absence and in the presence of RupPDIp under light irradiation and in the dark. RESULTS RupPDIp eliminated both fungi at ≤5.0 μM. Green light showed the best results, eliminating S. brasiliensis and C. albicans colonies at RupPDIp 0.5 μM and 0.05 μM, respectively. CONCLUSION RupPDIp is a promising photosensitizer in aPDT, eliminating 106 CFU/mL of both fungi at 450 nm and 525 nm, with lower light doses and concentrations when treated with the green light compared to the blue light.
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Affiliation(s)
- M A Tiburcio
- Chemistry Department, Federal University of São Carlos, Brazil.
| | - A R Rocha
- São Carlos Institute of Physics, University of Sao Paulo, Brazil; PPG Biotec, Federal University of São Carlos, Brazil
| | - R A Romano
- São Carlos Institute of Physics, University of Sao Paulo, Brazil
| | - N M Inada
- São Carlos Institute of Physics, University of Sao Paulo, Brazil
| | - V S Bagnato
- São Carlos Institute of Physics, University of Sao Paulo, Brazil; Hagler Fellow, Texas A&M University, College Station, TX, USA
| | - R M Carlos
- Chemistry Department, Federal University of São Carlos, Brazil
| | - H H Buzzá
- São Carlos Institute of Physics, University of Sao Paulo, Brazil; Institute of Physics, Pontificia Universidad Católica de Chile, Santiago, Chile.
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Gluck C, Min S, Oyelakin A, Che M, Horeth E, Song EAC, Bard J, Lamb N, Sinha S, Romano RA. A Global Vista of the Epigenomic State of the Mouse Submandibular Gland. J Dent Res 2021; 100:1492-1500. [PMID: 33978512 DOI: 10.1177/00220345211012000] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The parotid, submandibular, and sublingual glands represent a trio of oral secretory glands whose primary function is to produce saliva, facilitate digestion of food, provide protection against microbes, and maintain oral health. While recent studies have begun to shed light on the global gene expression patterns and profiles of salivary glands, particularly those of mice, relatively little is known about the location and identity of transcriptional control elements. Here we have established the epigenomic landscape of the mouse submandibular salivary gland (SMG) by performing chromatin immunoprecipitation sequencing experiments for 4 key histone marks. Our analysis of the comprehensive SMG data sets and comparisons with those from other adult organs have identified critical enhancers and super-enhancers of the mouse SMG. By further integrating these findings with complementary RNA-sequencing based gene expression data, we have unearthed a number of molecular regulators such as members of the Fox family of transcription factors that are enriched and likely to be functionally relevant for SMG biology. Overall, our studies provide a powerful atlas of cis-regulatory elements that can be leveraged for better understanding the transcriptional control mechanisms of the mouse SMG, discovery of novel genetic switches, and modulating tissue-specific gene expression in a targeted fashion.
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Affiliation(s)
- C Gluck
- Department of Biochemistry, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY, USA
| | - S Min
- Department of Oral Biology, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY, USA
| | - A Oyelakin
- Department of Oral Biology, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY, USA
| | - M Che
- Department of Oral Biology, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY, USA
| | - E Horeth
- Department of Oral Biology, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY, USA
| | - E A C Song
- Department of Oral Biology, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY, USA
| | - J Bard
- Department of Biochemistry, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY, USA.,Genomics and Bioinformatics Core, State University of New York at Buffalo, Buffalo, NY, USA
| | - N Lamb
- Genomics and Bioinformatics Core, State University of New York at Buffalo, Buffalo, NY, USA
| | - S Sinha
- Department of Biochemistry, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY, USA
| | - R A Romano
- Department of Biochemistry, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY, USA.,Department of Oral Biology, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY, USA
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Clabel H JL, Awan IT, Lozano G, Pereira-da-Silva MA, Romano RA, Rivera VAG, Ferreira SO, Marega E. Understanding the electronic properties of BaTiO 3 and Er 3+ doped BaTiO 3 films through confocal scanning microscopy and XPS: the role of oxygen vacancies. Phys Chem Chem Phys 2020; 22:15022-15034. [PMID: 32597431 DOI: 10.1039/d0cp01010c] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photonic and electronic properties exist inherently in ferroelectric barium titanate (BaTiO3); severe luminescence quenching also exists due to the insufficient confinement of excitons. In this sense, high optical emission can only be achieved by its chemical and structural modification. Thin BaTiO3 and Er:BaTiO3 films were grown by the spin coating method on a glass substrate at room temperature. Self-trapping of excitons in the thin BaTiO3 film and its structural modification due to the doping with Er3+ ions (Er:BaTiO3) are verified using scanning confocal fluorescence microscopy (SCFM), where self-trapping excitons never occured in its pure state. By thermal treatment and doping (BaTiO3 and Er:BaTiO3) we obtained localization of the excitons, which would further induce lattice strain around the surface defects, to accommodate the self-trapped excitons. With such a self-trapped state, the structure of BaTiO3 generates broadband emission of several overlapping bands between 1.95 and 2.65 eV at room temperature, while the structure Er:BaTiO3 showed defined emission bands at 2.24 and 2.35 eV, with very weak contributions of the emission due to the self-trapping state. The influence of the variation of the excitation wavelength using 1PE and 2PE on the emission bands of BaTiO3 and Er:BaTiO3 is also investigated. The results of enhanced emission bands suggest a clear dependence of the emission intensity on the excitation energy, where a ∼3 fold enhancement in emission has been demonstrated under Er3+ (1.55 eV) excitation, which can be attributed to effective energy transfer between the Er3+ ions. As a result, it is concluded that the developed BaTiO3 and Er:BaTiO3 can pave the way for future photonic devices.
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Affiliation(s)
- J L Clabel H
- Physics Institute of São Carlos, University of São Paulo, P.O. Box 369, 13560-970, São Carlos, SP, Brazil.
| | - Iram T Awan
- Physics Institute of São Carlos, University of São Paulo, P.O. Box 369, 13560-970, São Carlos, SP, Brazil.
| | - G Lozano
- Physics Institute of São Carlos, University of São Paulo, P.O. Box 369, 13560-970, São Carlos, SP, Brazil.
| | - M A Pereira-da-Silva
- Physics Institute of São Carlos, University of São Paulo, P.O. Box 369, 13560-970, São Carlos, SP, Brazil. and University Center Central Paulista, UNICEP, P.O. Box 13563-470, São Carlos, SP, Brazil
| | - R A Romano
- Physics Institute of São Carlos, University of São Paulo, P.O. Box 369, 13560-970, São Carlos, SP, Brazil.
| | - V A G Rivera
- Facultad de Ciencias Físicas, Universidad Nacional Mayor de San Marcos, UNMSM, Lima, Lima, Peru
| | - S O Ferreira
- Departament of Physics, Federal University of Viçosa, UFV, P.O. Box 36570-901, Viçosa, MG, Brazil
| | - E Marega
- Physics Institute of São Carlos, University of São Paulo, P.O. Box 369, 13560-970, São Carlos, SP, Brazil.
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Rastelli ANS, Nicolodelli G, Romano RA, Milori DMBP, Perazzoli ILO, Ferreira EJ, Pedroso ACB, Souza MT, Peitl O, Zanotto ED. After bleaching enamel remineralization using a bioactive glass-ceramic (BioSilicate®). Biomedical glasses 2016. [DOI: 10.1515/bglass-2016-0001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractTooth bleaching agents may weaken the tooth structure, therefore, it is important to minimize any risks of enamel and dentine damage caused by them. In this way, different materials have been used to avoid or minimize the tooth damage during bleaching. Recently, bioactive glasses have been demonstrated to be effective in mineralization of dental structures. Therefore, this study evaluated the effect of BioSilicate® (a polycrystalline bioactive glass-ceramic) after bleaching by Laser-induced breakdown spectroscopy (LIBS) technique. Bovine dental blocks with 4 × 4 × 3 mm were obtained (n = 20), sequentially embedded in epoxy resin and then polished. Bleaching was performed using 35% hydrogen peroxide (Whiteness HP). Calcium (Ca) and phosphate (P) intensity values by LIBSwere obtained before the treatment (T0, baseline – control Group), after bleaching (T1), and after BioSilicate® application (T2). The use of BioSilicate® after bleaching showed to be an optimal way to remineralize enamel surface making BioSilicate® application a promising adjunct step to avoid or minimize the mineral loss on enamel surface after bleaching.
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Abstract
During the last two decades, Brazilian society has gone through great changes into political, ideological and economical fields. These changes left their strings into society, specially in population health. The nurse formation based on the Law n(o) 5540/68 and on the Statement n(o) 163/72, no more meets population demands. Since 1992, the Nursing Faculty of UERJ-FEUerj intensifies the reflection movement upon teaching-learning process searching for transforming its own reality. The making of this project presents two complementary and important reasons: FEUerj docents and discents' desire in elaborating a curriculum which searches for nurses' formation that articulates teaching-work-community, theory and practice, based on a Critical Theory of Education, on the line of PROBLEMATIZATION, and the accomplishment of Statement n(o) 314/94 from the CFE and from the Letter of Order MEC n(o) 1171/15/dez/94. From debating, the professional profile has been defined from the social environment where the profession is performed and the alumnate's characteristics; area determination or group of attributions, according to professional praxis adequation, concept hierachization, processes, etc., which in the process of 'classification and syntheses' of knowledge results into a netlike chained and related tree. In the first phase of the curriculum study, it has diagnosed as principal condition, the actual curriculum 'DECONTEXTUALIZATION' and the 'US' to be faced to lead it to an end the Curriculum Reformulation Proposal. The Process of Pedagogical Abilitation for professors, workshops, researches on the desirable and present profile, seminars, performance, abilities and principles systematization, identification of areas which compose the integrated curriculum, subjects localization into areas and articulation between professional subjects and other activities, has been implemented. Based on this work on the problematized pedagogy first step, an instrument 'Research on the Professional Profile for the Nursing Graduation Course', was built, identifying the performances and principles which sustain them on each subject making the present profile clear and desirable to docents and discents.
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Novotny TE, Romano RA, Davis RM, Mills SL. The public health practice of tobacco control: lessons learned and directions for the states in the 1990s. Annu Rev Public Health 1992; 13:287-318. [PMID: 1599590 DOI: 10.1146/annurev.pu.13.050192.001443] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- T E Novotny
- Public Health Practice Program Office, Centers for Disease Control, University of California, Berkeley
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Cicchi P, Tilli R, Romano RA, Borrelli D. [The surgical exploration of the spermatic cord and testis with deferento-vesiculography (DVG) in the study of azoospermias (author's transl)]. Chir Ital 1980; 32:1097-110. [PMID: 7249171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The Authors refer about their investigation of the azoospermias with surgical exploration of the spermatic cord and testis with deferento-vesiculography (DVG). Thirty-three patients were examined with DVG from a total of 50 observations. The Authors conclude that such investigation, associated to the study of others parameters in the male sterility, reveals itself very useful to provide information about azoospermias. Therefore, while testicular biopsy informs on the histomorfologic aspect of the testis, the DVG provides the best investigation of the morphology of the seminal ducts.
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