Biodegradation of the antiretroviral tenofovir disoproxil by a cyanobacteria/bacterial culture

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dc.creatorSandra Regina Silva
dc.creatorGabriel Souza-Silva
dc.creatorCarolina Paula de Souza Moreira
dc.creatorOlívia Maria de Sousa Ribeiro Vasconcelos
dc.creatorMicheline Rosa Silveira
dc.creatorFrancisco Antonio Rodrigues Barbosa
dc.creatorSergia Maria Starling Magalhães
dc.creatorMarcos Paulo Gomes Mol
dc.date.accessioned2026-03-02T21:26:01Z
dc.date.issued2024-10-10
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.identifier.doihttps://doi.org/10.3390/toxics12100729
dc.identifier.issn2305-6304
dc.identifier.urihttps://hdl.handle.net/1843/1850
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofToxics
dc.rightsAcesso aberto
dc.subjectBiodegradação
dc.subjectFumarato de Tenofovir Disoproxila
dc.subjectDescarte de resíduos
dc.subjectBactéria
dc.subjectMeio ambiente
dc.subject.otherDrug
dc.subject.otherMicrocystis novacekii
dc.subject.otherPseudomonas pseudoalcaligenes
dc.subject.otherBy-products
dc.subject.otherTenofovir isoproxil monoester
dc.titleBiodegradation of the antiretroviral tenofovir disoproxil by a cyanobacteria/bacterial culture
dc.typeArtigo de periódico
local.citation.epage12
local.citation.issue10
local.citation.spage1
local.citation.volume12
local.description.resumoTenofovir disoproxil fumarate (TDF) is an antiretroviral drug extensively used by people living with HIV. The TDF molecule is hydrolysed in vivo and liberates tenofovir, the active part of the molecule. Tenofovir is a very stable drug and the discharge of its residues into the environment can potentially lead to risk for aquatic species. This study evaluated the TDF biodegradation and removal by cultures of Microcystis novacekii with the bacteria Pseudomonas pseudoalcaligenes. Concentrations of TDF of 12.5, 25.0, and 50.0 mg/L were used in this study. The process occurred in two stages. In the first 72 h, TDF was de-esterified, forming the tenofovir monoester intermediate by abiotic and enzymatic processes associated in an extracellular medium. In a second step, the monoester was removed from the culture medium by intracellular processes. The tenofovir or other by-products of TDF were not observed in the test conditions. At the end of the experiment, 88.7 to 94.1% of TDF and its monoester derivative were removed from the culture medium over 16 days. This process showed higher efficiency of TDF removal at the concentration of 25 mg/L. Tenofovir isoproxil monoester has partial antiviral activity and has shown to be persistent, maintaining a residual concentration after 16 days in the culture medium, therefore indicating the need to continue research on methods for total removal of this product from the aquatic environment.
local.identifier.orcidhttps://orcid.org/0000-0002-3740-4346
local.identifier.orcidhttps://orcid.org/0000-0002-2026-6936
local.identifier.orcidhttps://orcid.org/0000-0002-2568-3579
local.publisher.countryBrasil
local.publisher.departmentFAR - DEPARTAMENTO DE FARMÁCIA SOCIAL
local.publisher.initialsUFMG
local.subject.cnpqCIENCIAS DA SAUDE
local.url.externahttps://www.mdpi.com/2305-6304/12/10/729

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