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  1. Article ; Online: Clinical acceptance of antimicrobial photodynamic therapy in the age of WHO global priority pathogens: So what we need to move forward?

    Sellera, Fábio P / Sabino, Caetano P / Núñez, Silvia C / Ribeiro, Martha S

    Photodiagnosis and photodynamic therapy

    2022  Volume 40, Page(s) 103158

    Language English
    Publishing date 2022-10-13
    Publishing country Netherlands
    Document type Editorial
    ZDB-ID 2149918-4
    ISSN 1873-1597 ; 1572-1000
    ISSN (online) 1873-1597
    ISSN 1572-1000
    DOI 10.1016/j.pdpdt.2022.103158
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Photodynamic Inactivation of Foodborne Bacteria: Screening of 32 Potential Photosensitizers.

    Prasad, Amritha / Wynands, Erin / Roche, Steven M / Romo-Bernal, Cristina / Allan, Nicholas / Olson, Merle / Levengood, Sheeny / Andersen, Roger / Loebel, Nicolas / Sabino, Caetano P / Ross, Joseph A

    Foods (Basel, Switzerland)

    2024  Volume 13, Issue 3

    Abstract: The development of novel antimicrobial technologies for the food industry represents an important strategy to improve food safety. Antimicrobial photodynamic disinfection (aPDD) is a method that can inactivate microbes without the use of harsh chemicals. ...

    Abstract The development of novel antimicrobial technologies for the food industry represents an important strategy to improve food safety. Antimicrobial photodynamic disinfection (aPDD) is a method that can inactivate microbes without the use of harsh chemicals. aPDD involves the administration of a non-toxic, light-sensitive substance, known as a photosensitizer, followed by exposure to visible light at a specific wavelength. The objective of this study was to screen the antimicrobial photodynamic efficacy of 32 food-safe pigments tested as candidate photosensitizers (PSs) against pathogenic and food-spoilage bacterial suspensions as well as biofilms grown on relevant food contact surfaces. This screening evaluated the minimum bactericidal concentration (MBC), minimum biofilm eradication concentration (MBEC), and colony forming unit (CFU) reduction against
    Language English
    Publishing date 2024-01-31
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2704223-6
    ISSN 2304-8158
    ISSN 2304-8158
    DOI 10.3390/foods13030453
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: A systematic scoping review of ultraviolet C (UVC) light systems for SARS-CoV-2 inactivation.

    Sellera, Fábio P / Sabino, Caetano P / Cabral, Fernanda V / Ribeiro, Martha S

    Journal of photochemistry and photobiology

    2021  Volume 8, Page(s) 100068

    Abstract: A significant amount of epidemiological evidence has underlined that human-to-human transmission due to close contacts is considered the main pathway of transmission, however since the SARS-CoV-2 can also survive in aerosols, water, and surfaces, the ... ...

    Abstract A significant amount of epidemiological evidence has underlined that human-to-human transmission due to close contacts is considered the main pathway of transmission, however since the SARS-CoV-2 can also survive in aerosols, water, and surfaces, the development and implementation of effective decontamination strategies are urgently required. In this regard, ultraviolet germicidal irradiation (UVGI) using ultraviolet C (UVC) has been proposed to disinfect different environments and surfaces contaminated by SARS-CoV-2. Herein, we performed a systematic scoping review strictly focused on peer-reviewed studies published in English that reported experimental results of UVC-based technologies against the SARS-CoV-2 virus. Studies were retrieved from PubMed and the Web of Science database. After our criterious screening, we identified 13 eligible articles that used UVC-based systems to inactivate SARS-CoV-2. We noticed the use of different UVC wavelengths, technologies, and light doses. The initial viral titer was also heterogeneous among studies. Most studies reported virus inactivation in well plates, even though virus persistence on N95 respirators and different surfaces were also evaluated. SARS-CoV-2 inactivation reached from 90% to 100% depending on experimental conditions. We concluded that there is sufficient evidence to support the use of UVC-based technologies against SARS-CoV-2. However, appropriate implementation is required to guarantee the efficacy and safety of UVC strategies to control the COVID-19 pandemic.
    Language English
    Publishing date 2021-09-16
    Publishing country Netherlands
    Document type Journal Article
    ISSN 2666-4690
    ISSN (online) 2666-4690
    DOI 10.1016/j.jpap.2021.100068
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  4. Article ; Online: New Insights into the Bacterial Targets of Antimicrobial Blue Light.

    Dos Anjos, Carolina / Leanse, Leon G / Ribeiro, Martha S / Sellera, Fábio P / Dropa, Milena / Arana-Chavez, Victor E / Lincopan, Nilton / Baptista, Maurício S / Pogliani, Fabio C / Dai, Tianhong / Sabino, Caetano P

    Microbiology spectrum

    2023  , Page(s) e0283322

    Abstract: ... protein carbonylation, lipid peroxidation, and membrane permeability in bacteria. Our data showed that P. aeruginosa was ...

    Abstract Antimicrobial blue light (aBL) offers efficacy and safety in treating infections. However, the bacterial targets for aBL are still poorly understood and may be dependent on bacterial species. Here, we investigated the biological targets of bacterial killing by aBL (λ = 410 nm) on three pathogens: Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. Initially, we evaluated the killing kinetics of bacteria exposed to aBL and used this information to calculate the lethal doses (LD) responsible for killing 90 and 99.9% of bacteria. We also quantified endogenous porphyrins and assessed their spatial distribution. We then quantified and suppressed reactive oxygen species (ROS) production in bacteria to investigate their role in bacterial killing by aBL. We also assessed aBL-induced DNA damage, protein carbonylation, lipid peroxidation, and membrane permeability in bacteria. Our data showed that P. aeruginosa was more susceptible to aBL (LD
    Language English
    Publishing date 2023-02-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2807133-5
    ISSN 2165-0497 ; 2165-0497
    ISSN (online) 2165-0497
    ISSN 2165-0497
    DOI 10.1128/spectrum.02833-22
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: A systematic scoping review of ultraviolet C (UVC) light systems for SARS-CoV-2 inactivation

    Fábio P. Sellera / Caetano P. Sabino / Fernanda V. Cabral / Martha S. Ribeiro

    Journal of Photochemistry and Photobiology, Vol 8, Iss , Pp 100068- (2021)

    2021  

    Abstract: A significant amount of epidemiological evidence has underlined that human-to-human transmission due to close contacts is considered the main pathway of transmission, however since the SARS-CoV-2 can also survive in aerosols, water, and surfaces, the ... ...

    Abstract A significant amount of epidemiological evidence has underlined that human-to-human transmission due to close contacts is considered the main pathway of transmission, however since the SARS-CoV-2 can also survive in aerosols, water, and surfaces, the development and implementation of effective decontamination strategies are urgently required. In this regard, ultraviolet germicidal irradiation (UVGI) using ultraviolet C (UVC) has been proposed to disinfect different environments and surfaces contaminated by SARS-CoV-2. Herein, we performed a systematic scoping review strictly focused on peer-reviewed studies published in English that reported experimental results of UVC-based technologies against the SARS-CoV-2 virus. Studies were retrieved from PubMed and the Web of Science database. After our criterious screening, we identified 13 eligible articles that used UVC-based systems to inactivate SARS-CoV-2. We noticed the use of different UVC wavelengths, technologies, and light doses. The initial viral titer was also heterogeneous among studies. Most studies reported virus inactivation in well plates, even though virus persistence on N95 respirators and different surfaces were also evaluated. SARS-CoV-2 inactivation reached from 90% to 100% depending on experimental conditions. We concluded that there is sufficient evidence to support the use of UVC-based technologies against SARS-CoV-2. However, appropriate implementation is required to guarantee the efficacy and safety of UVC strategies to control the COVID-19 pandemic.
    Keywords Germicidal ; COVID-19 ; Virucidal ; Photoinactivation ; Physical method ; Irradiation ; Chemistry ; QD1-999
    Subject code 306
    Language English
    Publishing date 2021-12-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: UV-C (254 nm) lethal doses for SARS-CoV-2.

    Sabino, Caetano P / Sellera, Fábio P / Sales-Medina, Douglas F / Machado, Rafael Rahal Guaragna / Durigon, Edison Luiz / Freitas-Junior, Lucio H / Ribeiro, Martha S

    Photodiagnosis and photodynamic therapy

    2020  Volume 32, Page(s) 101995

    MeSH term(s) Anti-Infective Agents ; COVID-19 ; Humans ; Kinetics ; Photochemotherapy ; Photosensitizing Agents ; SARS-CoV-2
    Chemical Substances Anti-Infective Agents ; Photosensitizing Agents
    Keywords covid19
    Language English
    Publishing date 2020-09-08
    Publishing country Netherlands
    Document type Letter ; Comment
    ZDB-ID 2149918-4
    ISSN 1873-1597 ; 1572-1000
    ISSN (online) 1873-1597
    ISSN 1572-1000
    DOI 10.1016/j.pdpdt.2020.101995
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Identification and genomic features of halotolerant extended-spectrum-β-lactamase (CTX-M)-producing Escherichia coli in urban-impacted coastal waters, Southeast Brazil.

    Fernandes, Miriam R / Sellera, Fábio P / Moura, Quézia / Esposito, Fernanda / Sabino, Caetano P / Lincopan, Nilton

    Marine pollution bulletin

    2019  Volume 150, Page(s) 110689

    Abstract: We report the occurrence and genomic analysis of extended-spectrum β-lactamase (CTX-M)-producing Escherichia coli in anthropogenically polluted coastal waters of Southeast Brazil. E. coli strains belonging to sequence types (STs) ST10, ST38, ST155 and ... ...

    Abstract We report the occurrence and genomic analysis of extended-spectrum β-lactamase (CTX-M)-producing Escherichia coli in anthropogenically polluted coastal waters of Southeast Brazil. E. coli strains belonging to sequence types (STs) ST10, ST38, ST155 and ST1284 exhibited a wide resistome, with genes conferring resistance to medically relevant antimicrobials and heavy metals, and a halophilic behavior (tolerance to 9-10% NaCl). These findings suggest a heavy contamination in this area by critical priority bacteria adapted to marine environments, which might have negative impacts on human and ocean health.
    MeSH term(s) Brazil ; Environmental Monitoring ; Escherichia coli/isolation & purification ; Escherichia coli/physiology ; Escherichia coli Infections ; Genomics ; Humans ; Salt Tolerance ; Seawater/microbiology ; Water Microbiology ; beta-Lactamases/metabolism
    Chemical Substances beta-Lactamases (EC 3.5.2.6)
    Language English
    Publishing date 2019-11-13
    Publishing country England
    Document type Journal Article
    ZDB-ID 2001296-2
    ISSN 1879-3363 ; 0025-326X
    ISSN (online) 1879-3363
    ISSN 0025-326X
    DOI 10.1016/j.marpolbul.2019.110689
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  8. Article ; Online: Colistin-Resistant

    Fernandes, Miriam R / Sellera, Fábio P / Esposito, Fernanda / Sabino, Caetano P / Cerdeira, Louise / Lincopan, Nilton

    Antimicrobial agents and chemotherapy

    2017  Volume 61, Issue 7

    Abstract: The emergence and rapid spread of colistin- ... ...

    Abstract The emergence and rapid spread of colistin-resistant
    Language English
    Publishing date 2017-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 217602-6
    ISSN 1098-6596 ; 0066-4804
    ISSN (online) 1098-6596
    ISSN 0066-4804
    DOI 10.1128/AAC.00234-17
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

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  9. Article ; Online: Infertilidade masculina

    Carlos Augusto B. de Souza / Andréa C. Facin / João Sabino da Cunha Filho / Cristiano Caetano Salazar / Fernando M. de Freitas / Eduardo P. Passos

    Clinical and Biomedical Research, Vol 20, Iss

    2022  Volume 2

    Abstract: Entre 10 a 15% dos casais falham em ter filhos após um ano de intercursos sexuais não protegidos. Cerca de 50% das causas de infertilidade são de origem masculina. Como causa simples de infertilidade, alterações espermáticas são a condição mais freqüente. ...

    Abstract Entre 10 a 15% dos casais falham em ter filhos após um ano de intercursos sexuais não protegidos. Cerca de 50% das causas de infertilidade são de origem masculina. Como causa simples de infertilidade, alterações espermáticas são a condição mais freqüente. A infertilidade de causa masculina foi tradicionalmente considerada como uma condição de difícil tratamento. Novos estudos na área da genética têm encontrado deleções ou mutações em grupos de genes que poderiam explicar a infertilidade nesses pacientes. A maior parte dos avanços no tratamento destes casos reside nas técnicas de reprodução assistida, que tiveram seu maior avanço após o desenvolvimento da tecnologia da micromanipulação de gametas. O presente trabalho faz uma análise de causas e de tratamentos para dar solução à infertilidade masculina.
    Keywords Infertilidade ; fator masculino ; ICSI ; FIV ; Medicine ; R
    Language English
    Publishing date 2022-06-01T00:00:00Z
    Publisher Hospital de Clinicas de Porto Alegre
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: Antimicrobial blue light and photodynamic therapy inhibit clinically relevant β-lactamases with extended-spectrum (ESBL) and carbapenemase activity.

    Dos Anjos, Carolina / Sellera, Fábio P / Ribeiro, Martha S / Baptista, Maurício S / Pogliani, Fabio C / Lincopan, Nilton / Sabino, Caetano P

    Photodiagnosis and photodynamic therapy

    2020  Volume 32, Page(s) 102086

    Abstract: Introduction: The production of β-lactamases by Gram-negative bacteria is among the most important factors of resistance to antibiotics, which has contributed to therapeutic failures that currently threaten human and veterinary medicine worldwide. ... ...

    Abstract Introduction: The production of β-lactamases by Gram-negative bacteria is among the most important factors of resistance to antibiotics, which has contributed to therapeutic failures that currently threaten human and veterinary medicine worldwide. Antimicrobial photodynamic therapy and antimicrobial blue light have a broad-spectrum antibacterial activity against multidrug-resistant and hypervirulent pathogens.
    Objective: To investigate the ability of antimicrobial blue light to inhibit the hydrolytic activity of clinically relevant β-lactamase enzymes (i.e., KPC, IMP, OXA, CTX-M, and SHV), with further comparison of the inhibitory effects of antimicrobial blue light with methylene blue-mediated antimicrobial photodynamic therapy.
    Methods: Blue LED light (λ = 410 ± 10 nm) alone or red LED light (λ = 660 ± 10 nm) in combination with methylene blue were used to inactivate, in vitro, suspensions of Klebsiella pneumoniae strains producing clinically important β-lactamase enzymes assigned to the A, B and D Ambler molecular classes. Furthermore, β-lactamase activity inhibition mediated by antimicrobial blue light and methylene blue-mediated antimicrobial photodynamic therapy was measured by using the chromogenic β-lactam substrate nitrocefin.
    Results: β-lactamase activities were effectively inactivated by both visible light-based approaches. In this regard, antimicrobial blue light and methylene blue-antimicrobial photodynamic therapy led to a significant reduction in the hydrolysis of nitrocefin (81-98 %).
    Conclusion: Sublethal doses of antimicrobial blue light and methylene blue-mediated antimicrobial photodynamic therapy are equally effective to inhibit clinically significant β-lactamases, including extended-spectrum β-lactamases and carbapenemases.
    MeSH term(s) Anti-Bacterial Agents/therapeutic use ; Bacterial Proteins ; Humans ; Light ; Photochemotherapy/methods ; Photosensitizing Agents/pharmacology ; beta-Lactamases
    Chemical Substances Anti-Bacterial Agents ; Bacterial Proteins ; Photosensitizing Agents ; beta-Lactamases (EC 3.5.2.6) ; carbapenemase (EC 3.5.2.6)
    Language English
    Publishing date 2020-11-04
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2149918-4
    ISSN 1873-1597 ; 1572-1000
    ISSN (online) 1873-1597
    ISSN 1572-1000
    DOI 10.1016/j.pdpdt.2020.102086
    Database MEDical Literature Analysis and Retrieval System OnLINE

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