EFAR - Escola de Farmácia
URI permanente desta comunidadehttp://www.hml.repositorio.ufop.br/handle/123456789/451
Notícias
O curso de Farmácia em Ouro Preto foi criado em 1839, sendo a mais antiga Escola de Farmácia da América Latina.
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10 resultados
Resultados da Pesquisa
Item Longitudinal study of plasma visfatin/nicotinamide phosphoribosyltransferase (nampt) levels in healthy pregnant women.(2023) Nunes, Priscila Rezeck; Cavalli, Ricardo de Carvalho; Belo, Vanessa de Almeida; Sandrim, Valeria Cristina; Luizon, Marcelo RizzattiVisfatin/nicotinamide phosphorybosil transferase (NAMPT) is a novel adipocytokine with potential roles in the patho- physiology of metabolic disorders, including gestational disorders. However, there is no clear interpretation regarding the circulating visfatin levels in a healthy pregnancy. Therefore, we conducted the frst longitudinal study of plasma visfatin levels that followed up healthy pregnant women until the third trimester, including the postpartum period (PPP). The study recruited healthy women with singleton pregnancy who were not using any drug (including tobacco and alcohol). We have excluded pregnant women who did not attend all scheduled exams and developed gestational diabetes or hypertension, obesity, preeclampsia, or any infections during pregnancy. Nine women were considered eligible and examined during all three trimesters of pregnancy and between 8 and 12 weeks postpartum (PPP). Visfatin/NAMPT concentrations were meas- ured in EDTA-plasma by ELISA. The mean age of pregnant women included was 22±5 years (54% primiparous), and the mean of gestational age at delivery was 40±1.2 weeks. Mean systolic and diastolic blood pressures were 90 and 70 mmHg, respectively. Mean values (± standard error mean) of visfatin concentrations (μg/L) during trimesters were 11.38±1.45 (frst, 11–14 weeks), 9.18±1.82 (second, 20–24 weeks), 18.67±2.65 (third, 34–36 weeks), and 10.12±1.49 in the PPP. The value of the third trimester was signifcantly higher than the second trimester, and signifcantly reduced in the PPP (p<0.05, ANOVA with Bonferroni’s multiple comparison tests). Visfatin/NAMPT levels are signifcantly lower in the PPP, suggesting that factors stimulating its production would be limited to pregnancy, thereby contributing to its potential application as a biomarker in pregnancy complications.Item Cell immune response in mice skin stimulated with different adjuvants by intradermal route.(2022) Mathias, Fernando Augusto Siqueira; Cardoso, Jamille Mirelle de Oliveira; Reis, Levi Eduardo Soares; Souza, Juliana Vitoriano de; Moreira, Nádia das Dores; Ostolin, Thais Lopes Valentim Di Paschoale; Brito, Rory Cristiane Fortes de; Soares, Rodrigo Dian de Oliveira Aguiar; Vieira, Paula Melo de Abreu; Carneiro, Cláudia Martins; Roatt, Bruno Mendes; Reis, Alexandre BarbosaAdjuvants act in the innate immunity and, when combined to vaccine antigens, can produce a more intense response, improving the antigen presentation, directing the immune system, excellent for new vaccine formulations. This study evaluated the use of the intradermal route and the immune response triggered by a single dose of the adjuvants Aluminum Hydroxide (Al(OH)3 ), Montanide Pet Gel A (MPGA), Glucopyranosyl Lipid A Stable Emulsion (GLA-SE), and Resiquimod (R-848) in the mice skin. As control mice received sterile saline. MPGA and GLA-SE led to cell recruitment when compared with control group, with intense presence of neutrophils in first 12 hours, replaced by macrophages after 168 hours. R-848 and Al(OH)3 showed similar cell recruitment profiles. Regarding cytokine production, groups that received MPGA and GLA-SE produced high levels of IL-6, TNF-α, and IFN-γ. R-848 and Al(OH)3 groups displayed similar profile of cytokine production only at the first hour. Our results suggest that the intradermal route is efficient inducing immune system activation and GLA-SE was promising adjuvants for a type 1 immune response vaccine.Item Lychnophora pinaster’s effects on inflammation and pain in acute gout.(2021) Barros, Camila Helena; Matosinhos, Rafaela Cunha; Bernardes, Ana Catharina Fernandes Pereira Ferreira; Araújo, Marcela Carolina de Paula Michel; Bezerra, Juliana Pantaleão; Sachs, Daniela; Soares, Rodrigo Dian de Oliveira Aguiar; Guimarães, Dênia Antunes SaúdeEthnopharmacological relevance: Ethanolic extract of aerial parts from Lychnophora pinaster Mart. are used in traditional Brazilian medicine for treating pain, rheumatism and inflammation. Aim of the study: Drugs for the treatment of gout present severe adverse effects, justifying the need to search for new therapeutic options. The aim of the present study was to evaluate the effects of the ethanolic extract of L. pinaster and its main constituents in arthritis induced in mice by the injection of monosodium urate (MSU) crystals. Materials and methods: Antinociceptive effect was investigated using an electronic pressure-meter nociception paw test in C57BL/6 mice. Anti-gouty arthritis was investigated in mice induced with gout by the injection of MSU crystals into their femur-tibial tissue. Ethanolic extract of the aerial parts of Lychnophora pinaster and its main chemical constituents were evaluated as treatment. Results: The ethanolic extract and their main chemical constituents inhibited neutrophil migration, reduced IL-1β and TNF-α concentrations in the inflamed tissue and showed antinociceptive activity. Conclusions: Gouty arthritis effects of the ethanolic extract can be attached to a synergistic effect of terpenes, flavonoids and phenolic acids present in the extract. Results obtained support the use of this extract and its main chemical constituents in the treatment of gout, inflammation, and pain.Item Kinetics of phenotypic and functional changes in mouse models of sponge implants : rational selection to optimize protocols for specific biomolecules screening purposes.(2020) Lanna, Mariana Ferreira; Resende, Lucilene Aparecida; Soares, Rodrigo Dian de Oliveira Aguiar; Miranda, Marina Barcelos de; Mendonça, Ludmila Zanandreis de; Melo Júnior, Otoni Alves de Oliveira; Mariano, Reysla Maria da Silveira; Leite, Jaqueline Costa; Silveira, Patricia; Oliveira, Rodrigo Corrêa de; Dutra, Walderez Ornelas; Reis, Alexandre Barbosa; Martins Filho, Olindo Assis; Moura, Sandra Aparecida Lima de; Lemos, Denise da Silveira; Giunchetti, Rodolfo CordeiroThe sponge implant has been applied as an important in vivo model for the study of inflammatory processes as it induces the migration, proliferation, and accumulation of inflammatory cells, angiogenesis, and extracellular matrix deposition in its trabeculae. The characterization of immune events in sponge implants would be useful in identifying the immunological events that could support the selection of an appropriate experimental model (mouse strain) and time post-implant analysis in optimized protocols for novel applications of this model such as in biomolecules screening. Here, the changes in histological/morphometric, immunophenotypic and functional features of infiltrating leukocytes (LEU) were assessed in sponge implants for Swiss, BALB/c, and C57BL/6 mice. A gradual increase of fibrovascular stroma and a progressive decrease in LEU infiltration, mainly composed of polymorphonuclear cells with progressive shift toward mononuclear cells at late time-points were observed over time. Usually, Swiss mice presented a more prominent immune response with late mixed pattern (pro-inflammatory/anti-inflammatory: IL-2/IFN-γ/IL-4/IL-10/IL-17) of cytokine production. While BALB/c mice showed an early activation of the innate response with a controlled cytokine profile (low inflammatory potential), C57BL/6 mice presented a typical early pro-inflammatory (IL-6/TNF/IFN-γ) response with persistent neutrophilic involvement. A rational selection of the ideal time-point/mouse-lineage would avoid bias or tendentious results. Criteria such as low number of increased biomarkers, no recruitment of cytotoxic response, minor cytokine production, and lower biomarker connectivity (described as biomarker signature analysis and network analysis) guided the choice of the best time-point for each model (Day5/Swiss; Day7/BALB/c; Day6/C57BL/6) with wide application for screening purposes, such as identification of therapeutic biomolecules, selection of antigens/adjuvants, and follow-up of innate and adaptive immune response to vaccines candidates.Item Effect on cellular recruitment and the innate immune response by combining saponin, monophosphoryl lipid-A and incomplete freund’s adjuvant with Leishmania (Viannia) braziliensis antigens for a vaccine formulation.(2019) Souza, Juliana Vitoriano de; Mathias, Fernando Augusto Siqueira; Moreira, Nádia das Dores; Soares, Rodrigo Dian de Oliveira Aguiar; Vieira, Paula Melo de Abreu; Carvalho, Andréa Teixeira de; Carneiro, Cláudia Martins; Giunchetti, Rodolfo Cordeiro; Brito, Rory Cristiane Fortes de; Fujiwara, Ricardo Toshio; Roatt, Bruno Mendes; Melo, Maria Norma; Reis, Alexandre BarbosaThe poor immunogenicity displayed by some antigens has encouraged the development of strategies to improve the immune response and safety of vaccine candidates, resulting in an intense search for substances that potentiate vaccine response. Adjuvants have these properties helping vaccine candidates to induce a strong, durable, and fast immune response. In this study, we evaluated the specific immune response of adjuvants alone, Saponin (SAP), Incomplete Freund’s Adjuvant (IFA) and Monophosphoryl lipid-A SE (MPL-SE ) and in combination with total antigen of L. braziliensis (LB): LBSAP, LBIFA and LBMPL. The specific immune response induced by these compositions demonstrated that they were powerfully immunogenic, increasing cellular infiltration in the skin. Draining lymph nodes cultures showed that LBIFA and LBMPL have higher ability to increase the capacity of APCs to present antigens, with increased frequency of CD11c+ CD86+ cells. SAP, MPL, LBSAP, LBIFA and LBMPL could activate lymphocytes increasing expression of CD69 and CD25. LBSAP group was an excellent inducer of pro-inflammatory cytokines at 24 h. At 48 h, higher cytokines production was observed in IFA, LBIFA, MPL and LBMPL groups. Our data demonstrate that LBSAP and LBMPL are potential formulations to be tested in other experimental models. Also, the data obtained could expand the knowledge about immune response after sensitization and also contribute to the development of safe, immunogenic and effective vaccines.Item Multicomponent LBSap vaccine displays immunological and parasitological profiles similar to those of Leish-Tec® and Leishmune® vaccines against visceral leishmaniasis.(2016) Mendonça, Ludmila Zanandreis de; Resende, Lucilene Aparecida; Lanna, Mariana Ferreira; Soares, Rodrigo Dian de Oliveira Aguiar; Roatt, Bruno Mendes; Castro, Renata Alves de Oliveira e; Batista, Maurício Azevedo; Lemos, Denise da Silveira; Estanislau, Juliana de Assis Silva Gomes; Fujiwara, Ricardo Toshio; Rezende, Simone Aparecida; Martins Filho, Olindo Assis; Oliveira, Rodrigo Corrêa de; Dutra, Walderez Ornelas; Reis, Alexandre Barbosa; Giunchetti, Rodolfo CordeiroBackground: In past years, many researchers have sought canine visceral leishmaniasis (CVL) prevention through the characterization of Leishmania antigens as vaccine candidates. Despite these efforts, there is still no efficient vaccine for CVL control. Methods: In the present study, we performed a pre-clinical vaccine trial using BALB/c mice to compare the effects of the multicomponent LBSap vaccine with those of Leish-Tec® and Leishmune®. Blood was collected to determine the frequency of peripheral blood cells and to evaluate hematologic and immunophenotypic parameters. Liver and spleen samples were collected for parasitological quantification, and spleen samples were used to access the cytokine profile. Results: When measuring total IgG and IgG1 anti-Leishmania levels after the third vaccination and L. infantum challenge, it was evident that all vaccines were able to induce humoral immune response. Regarding the innate immune response, increased levels of NK CD3-CD49+ cells were the hallmark of all vaccinated groups, whereas only the Leish-Tec® group displayed a high frequency of CD14+ monocytes after L. infantum challenge. Moreover, CD3+CD4+ T cells were the main circulating lymphocytes induced after L. infantum challenge with all evaluated vaccines. Importantly, after L. infantum challenge, splenocytes from the Leishmune® vaccine produced high levels of IL-2, whereas a prominent type 1 immune response was the hallmark of the LBSap vaccine, which presented high levels of IL-2, IL-6, TNF-α, and IFN-γ. The efficacy analysis using real-time polymerase chain reaction demonstrated a reduction in the parasitism in the spleen (Leishmune®: 64 %; LBSap: 42 %; and Leish-Tec®: 36 %) and liver (Leishmune®: 71 %; LBSap: 62 %; and Leish-Tec®: 48 %). Conclusions: The dataset led to the conclusion that the LBSap vaccination was able to induce immune and efficacy profiles comparable with those of commercial vaccines, thus demonstrating its potential as a promising vaccine candidate for visceral leishmaniasis control.Item Immunological profile of resistance and susceptibility innaturally infected dogs by Leishmania infantum.(2014) Leal, Gleisiane Gomes de Almeida; Roatt, Bruno Mendes; Soares, Rodrigo Dian de Oliveira Aguiar; Carneiro, Cláudia Martins; Giunchetti, Rodolfo Cordeiro; Carvalho, Andréa Teixeira de; Martins Filho, Olindo Assis; Francisco, Amanda Fortes; Cardoso, Jamille Mirelle de Oliveira; Mathias, Fernando Augusto Siqueira; Oliveira, Rodrigo Corrêa de; Carneiro, Mariângela; Vital, Wendel Coura; Reis, Alexandre BarbosaVisceral leishmaniasis has a great impact on public health, and dogs are considered the maindomestic reservoir of Leishmania infantum, the causal parasite. In this study, 159 animalsnaturally infected by L. infantum from an endemic area of Brazil were evaluated through ananalysis of cellular responses, using flow cytometry, and of the hematological parameters.The results confirmed that disease progression is associated with anemia and reductionsin eosinophils, monocytes and lymphocytes. The investigation of the immune response,based on the immunophenotypic profile of peripheral blood, showed declines in the abso-lute numbers of T lymphocytes CD5+and their subsets (CD4+and CD8+) and a drop of Blymphocytes in asymptomatic seropositive (AD-II) and symptomatic seropositive (SD) dogs.Neutrophils, when stimulated with soluble antigen of L. infantum, showed higher synthesisof interferon (IFN)- _+in AD-II and SD groups, with decreased production of interleukinItem Low and high-dose intradermal infection with Leishmania major and Leishmania amazonensis in C57BL/6 mice.(2010) Côrtes, Denise Fonseca; Carneiro, Matheus Batista Heitor; Santos, Liliane Martins dos; Souza, Talita Correia de Oliveira; Maioli, Tatiani Uceli; Duz, Ana Luiza Cassin; Jorge, Maria Letícia Ramos; Afonso, Luís Carlos Crocco; Carneiro, Cláudia Martins; Vieira, Leda QuerciaA model of skin infection with Leishmania amazonensis with low doses of parasites is compared to infection with high doses of L. amazonensis and low and high doses of Leishmania major. C57BL/6 mice were infected with 103 or 106 parasites in the ear and the outcome of infection was assessed. The appearance of lesions in mice infected with 103 parasites was delayed compared to mice infected with 106 Leishmania and parasites were detectable at the infection site before lesions became apparent. Mice infected with L. amazonensis displayed persistent lesions, whereas infection with L. major spontaneously healed in all groups, although lymphocytes persisted at the site of infection after healing. Macrophages persisted only in L. amazonensis-infected mice. High-dose L. amazonensis-infected mice produced lower levels of IFN-γ and TNF than mice infected with L. major. No correlation between the persistence of parasites and IL-10 levels and the production of nitric oxide or urea by macrophages was found. We conclude that infection with low doses of L. amazonensis in the dermis changes the course of infection by delaying the appearance of lesions. However, low-dose infection does not change the outcomes of susceptibility and cytokine production described for subcutaneous infection with high numbers of parasites.Item Cytokine and nitric oxide patterns in dogs immunized with LBSap vaccine, before and after experimental challenge with Leishmania chagasi plus saliva of Lutzomyia longipalpis.(2013) Resende, Lucilene Aparecida; Roatt, Bruno Mendes; Soares, Rodrigo Dian de Oliveira Aguiar; Viana, Kelvinson Fernandes; Mendonça, Ludmila Zanandreis de; Lanna, Mariana Ferreira; Lemos, Denise da Silveira; Oliveira, Rodrigo Corrêa de; Martins Filho, Olindo Assis; Fujiwara, Ricardo Toshio; Carneiro, Cláudia Martins; Reis, Alexandre Barbosa; Giunchetti, Rodolfo CordeiroIn the studies presented here, dogs were vaccinated against Leishmania (Leishmania) cha-gasi challenge infection using a preparation of Leishmania braziliensis promastigote proteinsand saponin as adjuvant (LBSap). Vaccination with LBSap induced a prominent type 1immune response that was characterized by increased levels of interleukin (IL-) 12 andinterferon gamma (IFN- _) production by peripheral blood mononuclear cells (PBMC) uponstimulation with soluble vaccine antigen. Importantly, results showed that this type ofresponsiveness was sustained after challenge infection; at day 90 and 885 after L. chagasichallenge infection, PBMCs from LBSap vaccinated dogs produced more IL-12, IFN- _ andconcomitant nitric oxide (NO) when stimulated with Leishmania antigens as comparedto PBMCs from respective control groups (saponin, LB- treated, or non-treated controldogs). Moreover, transforming growth factor (TGF)- _ decreased in the supernatant of SLcA-stimulated PBMCs in the LBSap group at 90 days. Bone marrow parasitological analysisrevealed decreased frequency of parasitism in the presence of vaccine antigen. It is con-cluded that vaccination of dogs with LBSap vaccine induced a long-lasting type 1 immuneresponse against L. chagasi challenge infection.Item Cytokine and transcription factor profiles in the skin of dogs naturally infected by Leishmania (Leishmania) chagasi presenting distinct cutaneous parasite density and clinical status.(2011) Souza, Daniel Menezes; Oliveira, Rodrigo Corrêa de; Cota, Renata Guerra de Sá; Giunchetti, Rodolfo Cordeiro; Carvalho, Andréa Teixeira de; Martins Filho, Olindo Assis; Oliveira, Guilherme Corrêa de; Reis, Alexandre BarbosaThe immune response in the skin of dogs infected withLeishmania chagasi and its asso-ciation with distinct levels of tissue parasitism and clinical progression of canine visceral leishmaniasis (CVL) are poorly understood and limited studies are available. A detailed analysis of the profiles of cytokines (IFN- , IL-4, IL-5, IL-10, IL-12, IL-13, TGF- 1 and TNF- ) and transcription factors (T-bet, GATA-3 and FOXP3) in the skin of 35 naturally infected dogs was carried out using real-time PCR alongside determinations of skin parasite density and the clinical status of CVL. A mixed cytokine profile with high levels of expression of IFN- , TNF- and IL-13 was determined in asymptomatic dogs. Additionally, the levels of transcription factors GATA-3 and FOXP3 were correlated with the asymptomatic disease. A mixed cytokine profile was also observed during active CVL. Moreover, high levels of IL-10 and TGF- 1, concomitant with the low expression of IL-12, may represent a key condition that allows persistence of parasite replication in the skin. The results obtained indicate that in asymptomatic disease or lower levels of skin parasite density, a mixed inflammatory, regulatory immune response profile may be of major relevance for both the maintenance of the clinical status of the dogs as well as for parasite persistence and replication at low levels.