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Leite-Silva PR, Pinheiro RS, Barbosa-Ferreira JMB, Balieiro A, Sabidó M, Lacerda MVG, Chaves YO, Nogueira PA, Benzaken AS. Bone mass, fracture risk, and associated factors in postmenopausal women living with HIV. Menopause 2024; 31:46-51. [PMID: 38113435 DOI: 10.1097/gme.0000000000002293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
OBJECTIVE The aim of this study was to assess the prevalence of low bone mass (osteopenia/osteoporosis), the factors associated with low bone mass, and the risk of fractures in Brazilian postmenopausal women living with HIV (WLH) in the Amazon region. METHODS This is a cohort study with a cross-sectional assessment at baseline conducted between March 2021 to August 2022 with 100 postmenopausal WLH undergoing antiretroviral therapy (ART) between 45 and 60 years of age and 100 age-matched HIV-negative women. Data on bone mineral density in the lumbar spine (LS) and femoral neck (FN) were collected using dual x-ray absorptiometry and the 10-year risk of hip and major osteoporotic fractures was assessed using the Fracture Risk Assessment tool (FRAX). RESULTS The age of menopause onset occurred earlier in WLH ( P < 0.001). No differences in prevalence of osteoporosis and osteopenia in LS and FN were observed except for a lower T score in FN in WLH ( P = 0.039). The FRAX for major osteoporotic fracture and hip fracture were low in both groups, despite the mean of both FRAX scores was higher in WLH ( P < 0.001). Multivariate analysis showed that years since menopause onset, higher body mass index and higher FRAX major osteoporotic fracture were associated with the WLH group, while a higher frequency of physical activity was registered in the HIV-negative group. Multivariate analysis also showed that in WLH, a lower T score in FN was associated with years since menopause onset and body mass index and that the number of years since menopause onset was associated with a lower T score in the LS and a higher score in the FRAX hip fracture. CONCLUSIONS Our findings show a high prevalence of low bone mass (osteopenia/osteoporosis) in Brazilian postmenopausal women from the Amazon region. Women living with HIV have higher FRAX scores than HIV-negative women and a lower T score in the FN.
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Affiliation(s)
| | - Rebeca S Pinheiro
- Pós-graduação em Imunologia Básica e Aplicada, Universidade Federal doAmazonas, Manaus, Brazil
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Deusdará TT, Félix MKC, de S Brito H, Cangussu EWS, de S Moura W, Albuquerque B, Silva MG, Dos Santos GR, de Morais PB, da Silva EF, Chaves YO, Mariúba LAM, Nogueira PA, Astolfi-Filho S, Assunção EN, Epiphanio S, Marinho CRF, Brandi IV, Viana KF, Oliveira EE, Cangussu ASR. Using an Aluminum Hydroxide–Chitosan Matrix Increased the Vaccine Potential and Immune Response of Mice against Multi-Drug-Resistant Acinetobacter baumannii. Vaccines (Basel) 2023; 11:vaccines11030669. [PMID: 36992253 DOI: 10.3390/vaccines11030669] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/02/2023] [Accepted: 03/06/2023] [Indexed: 03/18/2023] Open
Abstract
Acinetobacter baumannii is a Gram-negative, immobile, aerobic nosocomial opportunistic coccobacillus that causes pneumonia, septicemia, and urinary tract infections in immunosuppressed patients. There are no commercially available alternative antimicrobials, and multi-drug resistance is an urgent concern that requires emergency measures and new therapeutic strategies. This study evaluated a multi-drug-resistant A. baumannii whole-cell vaccine, inactivated and adsorbed on an aluminum hydroxide–chitosan (mAhC) matrix, in an A. baumannii sepsis model in immunosuppressed mice by cyclophosphamide (CY). CY-treated mice were divided into immunized, non-immunized, and adjuvant-inoculated groups. Three vaccine doses were given at 0D, 14D, and 28D, followed by a lethal dose of 4.0 × 108 CFU/mL of A. baumannii. Immunized CY-treated mice underwent a significant humoral response, with the highest IgG levels and a higher survival rate (85%); this differed from the non-immunized CY-treated mice, none of whom survived (p < 0.001), and from the adjuvant group, with 45% survival (p < 0.05). Histological data revealed the evident expansion of white spleen pulp from immunized CY-treated mice, whereas, in non-immunized and adjuvanted CY-treated mice, there was more significant organ tissue damage. Our results confirmed the proof-of-concept of the immune response and vaccine protection in a sepsis model in CY-treated mice, contributing to the advancement of new alternatives for protection against A. baumannii infections.
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Affiliation(s)
- Túllio T Deusdará
- Graduate Program for Biodiversity and Biotechnology of Legal Amazon, Federal University of Tocantins, Palmas 77001-090, TO, Brazil
| | - Mellanie K C Félix
- Graduate Program for Biodiversity and Biotechnology of Legal Amazon, Federal University of Tocantins, Palmas 77001-090, TO, Brazil
| | - Helio de S Brito
- Graduate Program for Biodiversity and Biotechnology of Legal Amazon, Federal University of Tocantins, Palmas 77001-090, TO, Brazil
| | - Edson W S Cangussu
- Graduate Program in Biotechnology, Federal University of Tocantins, Gurupi 77425-000, TO, Brazil
| | - Wellington de S Moura
- Graduate Program for Biodiversity and Biotechnology of Legal Amazon, Federal University of Tocantins, Palmas 77001-090, TO, Brazil
| | - Benedito Albuquerque
- Graduate Program in Biotechnology, Federal University of Tocantins, Gurupi 77425-000, TO, Brazil
| | - Marcos G Silva
- Graduate Program in Biotechnology, Federal University of Tocantins, Gurupi 77425-000, TO, Brazil
| | - Gil R Dos Santos
- Graduate Program for Biodiversity and Biotechnology of Legal Amazon, Federal University of Tocantins, Palmas 77001-090, TO, Brazil
- Graduate Program in Biotechnology, Federal University of Tocantins, Gurupi 77425-000, TO, Brazil
| | - Paula B de Morais
- Graduate Program for Biodiversity and Biotechnology of Legal Amazon, Federal University of Tocantins, Palmas 77001-090, TO, Brazil
| | - Elizangela F da Silva
- Instituto Leônidas e Maria Deane, Oswaldo Cruz Foundation-Fiocruz Amazônia, Manaus 69057-070, AM, Brazil
| | - Yury O Chaves
- Instituto Leônidas e Maria Deane, Oswaldo Cruz Foundation-Fiocruz Amazônia, Manaus 69057-070, AM, Brazil
| | - Luis Andre M Mariúba
- Instituto Leônidas e Maria Deane, Oswaldo Cruz Foundation-Fiocruz Amazônia, Manaus 69057-070, AM, Brazil
| | - Paulo A Nogueira
- Instituto Leônidas e Maria Deane, Oswaldo Cruz Foundation-Fiocruz Amazônia, Manaus 69057-070, AM, Brazil
| | - Spartaco Astolfi-Filho
- Laboratory of DNA Technology, Biotechnology Department, Multidisciplinary Support Center, Federal University of Amazonas, Manaus 69080-900, AM, Brazil
| | - Enedina N Assunção
- Laboratory of DNA Technology, Biotechnology Department, Multidisciplinary Support Center, Federal University of Amazonas, Manaus 69080-900, AM, Brazil
| | - Sabrina Epiphanio
- Department of Immunology, Biomedical Science Institute, University of São Paulo (USP), São Paulo 05508-060, SP, Brazil
| | - Claudio R F Marinho
- Department of Immunology, Biomedical Science Institute, University of São Paulo (USP), São Paulo 05508-060, SP, Brazil
| | - Igor V Brandi
- Institute of Agricultural Sciences, Federal University of Minas Gerais, Montes Claros 39400-310, MG, Brazil
- Department of Biotchnology, State University of Montes Claros, Montes Claros 39401-089, MG, Brazil
| | - Kelvinson F Viana
- Interdisciplinary Center for Life Sciences and Nature, Federal University of Latin American Integration (UNILA), Foz do Iguaçu 85866-000, PR, Brazil
| | - Eugenio E Oliveira
- Graduate Program in Biotechnology, Federal University of Tocantins, Gurupi 77425-000, TO, Brazil
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa 36570-900, MG, Brazil
| | - Alex Sander R Cangussu
- Graduate Program for Biodiversity and Biotechnology of Legal Amazon, Federal University of Tocantins, Palmas 77001-090, TO, Brazil
- Graduate Program in Biotechnology, Federal University of Tocantins, Gurupi 77425-000, TO, Brazil
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Rodriguez AFR, Dos Santos CC, Lüdtke-Buzug K, Bakenecker AC, Chaves YO, Mariúba LAM, Brandt JV, Amantea BE, de Santana RC, Marques RFC, Jafelicci M, Morales MA. Evaluation of antiplasmodial activity and cytotoxicity assays of amino acids functionalized magnetite nanoparticles: Hyperthermia and flow cytometry applications. Mater Sci Eng C Mater Biol Appl 2021; 125:112097. [PMID: 33965107 DOI: 10.1016/j.msec.2021.112097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 12/23/2020] [Revised: 03/09/2021] [Accepted: 03/29/2021] [Indexed: 11/18/2022]
Abstract
We report the synthesis of magnetite nanoparticles (MNP) and their functionalization with glycine (MNPGly), β-alanine (MNPAla), L-phenylalanine (MNPPhAla), D-(-)-α-phenylglycine (MNPPhGly) amino acids. The functionalized nanoparticles were characterized by Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), electron paramagnetic resonance (EPR), vibrating sample magnetometry (VSM), Mössbauer spectroscopy (MS), magnetic hyperthermia (MH), dynamic light scattering and zeta potential. The functionalized nanoparticles had isoelectric points (IEP) at pH ≃ 4.4, 5.8, 5.9 and 6.8 for samples MNPGly, MNPAla, MNPPhGly and MNPPhAla, respectively, while pure magnetite had an IEP at pH 5.6. In the MH experiments, the samples showed specific absorption rate (SAR) of 64, 71, 74, 81 and 66 W/g for MNP, MNPGly, MNPAla, MNPPhGly, and MNPPhAla, respectively. We used a flow cytometric technique to determine the cellular magnetic nanoparticles plus amino acids content. Magnetic fractionation and characterization of Resovist® magnetic nanoparticles were performed for applications in magnetic particle imaging (MPI). We have also studied the antiproliferative and antiparasitic effects of functionalized MNPs. Overall, the data showed that the functionalized nanoparticles have great potential for using as environmental, antitumor, antiparasitic agents and clinical applications.
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Affiliation(s)
- Anselmo F R Rodriguez
- Laboratory of Nanobiotechnology, Federal University of Acre, Rio Branco, AC 69920-900, Brazil.
| | - Caio C Dos Santos
- Laboratory of Magnetic Materials and Colloids, Department of Physical Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, SP 14801-970, Brazil
| | - K Lüdtke-Buzug
- Institute of Medical Engineering, University of Lubeck, Lübeck, Germany
| | - Anna C Bakenecker
- Institute of Medical Engineering, University of Lubeck, Lübeck, Germany
| | - Yury O Chaves
- Diagnostic Laboratory and Control of Infectious Diseases in The Amazon - DCDIA Institute Leonidas e Maria Deane, Foundation Oswaldo Cruz, street Teresina 476 Adrianópolis, 69057-070 Manaus, AM, Brazil
| | - Luis A M Mariúba
- Diagnostic Laboratory and Control of Infectious Diseases in The Amazon - DCDIA Institute Leonidas e Maria Deane, Foundation Oswaldo Cruz, street Teresina 476 Adrianópolis, 69057-070 Manaus, AM, Brazil
| | - João V Brandt
- Laboratory of Magnetic Materials and Colloids, Department of Physical Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, SP 14801-970, Brazil
| | - Bruno E Amantea
- Laboratory of Magnetic Materials and Colloids, Department of Physical Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, SP 14801-970, Brazil
| | - Ricardo C de Santana
- Materials Physics Group, Physics Institute, Federal University of Goiás, Goiânia 74690-900, GO, Brazil
| | - Rodrigo F C Marques
- Laboratory of Magnetic Materials and Colloids, Department of Physical Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, SP 14801-970, Brazil
| | - Miguel Jafelicci
- Laboratory of Magnetic Materials and Colloids, Department of Physical Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, SP 14801-970, Brazil
| | - Marco A Morales
- Federal University of Rio Grande do Norte, Department of Theoretical and Experimental Physics, Natal 59078-970, RN, Brazil
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Rodriguez AFR, Rocha CO, Piazza RD, Dos Santos CC, Morales MA, Faria FSEDV, Iqbal MZ, Barbosa L, Chaves YO, Mariuba LA, Jafelicci M, Marques RFC. Synthesis, characterization and applications of maghemite beads functionalized with rabbit antibodies. Nanotechnology 2018; 29:365701. [PMID: 29894981 DOI: 10.1088/1361-6528/aacc21] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Magnetic nanoparticles (NPs) have attracted great attention owing to their applications in the biomedical field. In the present work, maghemite (γFe2O3) NPs of 6.5 nm were prepared using a sonochemical method and used to prepare magnetic beads through silanization with 3-aminopropyltrimethoxysilane (APTS). Subsequently, amino groups in the resulting APTS-γFe2O3 beads were converted to carboxylic acid (CARB-γFe2O3) through the succinic anhydride reaction, as confirmed by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy and dynamic light scattering (DLS) measurements. The size of these beads was measured as 12 nm and their hydrodynamic diameter as 490 nm, using TEM analysis and DLS, respectively. The CARB-γFe2O3 beads were further functionalized by immobilizing rabbit antibodies on their surfaces; the immobilization was confirmed by flow cytometry and ionic strength. The samples were further characterized by Mössbauer spectroscopy and DC magnetization measurements. Studies on magnetic relaxivities showed that magnetic beads present great potential for application in MR imaging.
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Affiliation(s)
- A F R Rodriguez
- Federal University of Acre, Laboratory of Nanobiotechnology, Rio Branco, 69920-900, AC, Brazil
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