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1.
Ann Hematol ; 101(1): 147-154, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34676435

RESUMO

Despite advances in supportive measures, acute myeloid leukemia (AML) remission induction still has a high mortality rate in real-world studies as compared to prospective reports. We analyzed data from 206 AML adult patients treated with conventional chemotherapy. The primary endpoint was the 60-day mortality rate, aiming to find risk factors and to examine the role of anti-infection prophylaxis. The 60-day mortality rate was 26%, raising to 41% among those older than 60 years. Complete response was documented at the end of induction in 49%. The final survival model showed that age > 60 years (HR 3.2), Gram-negative colonization (HR 3), monocytic AML (HR 1.8), C-reactive protein (CRP) > 15 mg/dL (HR 10), and an adverse risk in the genetic stratification (HR 3) were associated with induction death. Multidrug-resistant bacteria colonization, thrombosis, and AKI were documented in 71%, 12%, and 66% of the cohort, respectively. Antibacterial and antifungal prophylaxis did not improve outcomes in this study. Our report corroborated the higher mortality during AML induction compared to real-world data from the USA and Europe. In line with other publications, age and cytogenetic stratification influenced early death in this cohort. Noticeably, Gram-negative colonization, monocytic AML, and CRP were also significant to early mortality.


Assuntos
Leucemia Mieloide Aguda/terapia , Adolescente , Adulto , Fatores Etários , Idoso , Anti-Infecciosos/uso terapêutico , Antineoplásicos/uso terapêutico , Feminino , Humanos , Leucemia Mieloide Aguda/diagnóstico , Leucemia Mieloide Aguda/mortalidade , Masculino , Pessoa de Meia-Idade , Mortalidade , Prognóstico , Indução de Remissão/métodos , Estudos Retrospectivos , Fatores de Risco , Resultado do Tratamento , Adulto Jovem
2.
J Med Primatol ; 51(6): 367-373, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-35916434

RESUMO

BACKGROUND: Owl monkeys (Aotus infulatus) are frequently affected by heart diseases and, as in humans, dyslipidemia is one of the predisposing factors for adverse cardiovascular events. In view of this, the study of the lipid profile and plasma apolipoproteins can contribute to the clinical management of this neotropical primate species. METHODS: Lipid profile as well as A-1 and B apolipoprotein values were analyzed in 60 owl monkeys, studying their relationship with body biometry and the presence of cardiac alterations. RESULTS: Animals suspected of having heart disease did not show significant differences (p < .05) in terms of biometry or in relation to lipid profile and apolipoproteins A-1 and B values; however, higher values of LDL and ApoB and ApoB/ApoA-1 were observed in this group. CONCLUSIONS: This study is the first to describe the lipid profile and apolipoprotein values in owl monkeys, and further work will be needed to better elucidate the worthiness of LDL, ApoB, and the ApoB/ApoA-1 ratio in this primate species.


Assuntos
Apolipoproteína A-I , Apolipoproteínas B , Animais , Aotidae , Apolipoproteínas
3.
Anal Bioanal Chem ; 414(27): 7897-7909, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36149475

RESUMO

The investigation and control of jet fuel contamination for private aircrafts has gained attention due to the softer monitoring in comparison to commercial aviation. The possible contamination with kerosene solvent (KS) makes this investigation more challenging, since it has physicochemical similarities with jet fuel. To help solve this problem, a chemometric methodology was applied in this research combining multivariate curve resolution with alternating least squares (MCR-ALS) and partial least squares (PLS) models coupled to near- and mid-infrared spectroscopies (MIR/NIR) in order to detect and quantify KS in blends with JET-A1 using 23 samples (5-60% v/v). Additionally, 98 samples were stored for 60 days, and principal component analysis, genetic algorithm, and successive projections algorithm were coupled to linear discriminant analysis (PCA-LDA, GA-LDA, and SPA-LDA) in order to classify the blends according to the bands assigned to oxidation products, such as phenols and carboxylic acids. GA-LDA and SPA-LDA models were accurate and reached 100% sensitivity and specificity. Physicochemical analysis was not able to detect the presence of KS in contaminated jet fuel samples, even in high concentrations. The use of MIR-NIR combined spectra improved the quantification results, thus decreasing the experimental error from 5.22% (using only NIR) to 1.64%. PLS regression quantified the content of KS with high accuracy (RMSEP < 1.64%, R2 > 0.995). The MCR-ALS model stood out for recovering the spectral profile of kerosene solvent by segregating it from jet fuel spectra. The development of models using chemometric tools contributed to a fast, low-cost, and efficient process for quality control that can be applied in the fuel industry.


Assuntos
Querosene , Fenóis , Ácidos Carboxílicos , Análise dos Mínimos Quadrados , Solventes
4.
Appl Psychophysiol Biofeedback ; 47(2): 85-94, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35006474

RESUMO

To evaluate the heart rate response, emotion and changes in anxiety and anger levels after exposure to unpleasant pictures from the International Assessment Pictures System (IAPS) compared with neutral picture exposure in healthy individuals. Forty participants (23 women) visited the laboratory on two occasions. State anger and state anxiety levels were evaluated pre- and post-visualization of a set of IAPS pictures and heart rate was monitored during exposure. Two different picture sets were utilized-one with neutral pictures (that served as the control) and the other with unpleasant pictures. State anxiety and state anger were higher in post-unpleasant session for women than before (p < 0.001). For men, only state anxiety was higher in the post-unpleasant session (p < 0.001). State anxiety (p = 0.004) and state anger (p < 0.001) post-unpleasant session was higher for women than in men. The pleasure and dominance domains were lower in the unpleasant session for both men and women (p < 0.001), and the arousal domain was higher for both men and women (p < 0.001) than in the neutral session. In the unpleasant session, arousal was higher (p = 0.004), and dominance was lower (p < 0.001) among women than among men, but no difference in pleasure was found (p > 0.05). For women, average heart rate was higher on unpleasant session, compared to neutral (p = 0.01), but not for men (p > 0.05). Women are more sensitive and react strongly to unpleasant picture exposure. The IAPS unpleasant session was not able to induce anger levels in men.


Assuntos
Nível de Alerta , Emoções , Ira , Ansiedade , Nível de Alerta/fisiologia , Emoções/fisiologia , Feminino , Frequência Cardíaca , Humanos , Masculino
5.
J Med Primatol ; 50(2): 89-98, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33527433

RESUMO

BACKGROUND: The cardiovascular system of owl monkeys has been studied due to frequent postmortem findings of heart disease in asymptomatic animals. The silent aspect and the difficulty of early diagnosis intensify the importance of studying the cardiovascular system in this species. METHODS: Echocardiogram evaluation was carried out on 60 animals, grouped into suspect or non-suspect of having heart diseases, and evaluated through electrocardiogram, hematology, and biochemical tests. RESULTS: Doppler echocardiography indicated two animals with suspicion of left ventricular hypertrophy and eight with dilated cardiomyopathy. Suspect animals had higher cardiac measurements and reduced shortening fraction. Troponin I was detectable in two animals (0.128 ng/mL and 0.584 ng/mL), and serum albumin concentration was significantly higher in non-suspect animals (P < .05). CONCLUSIONS: The importance of echocardiographic measurements of IVSd, IVSs, LVIDd, LVIDs, LVPWd, LVPWs, LA, EF, and FS in the cardiac evaluation of captive owl monkeys was evidenced.


Assuntos
Aotidae/anatomia & histologia , Aotidae/sangue , Contagem de Células Sanguíneas , Análise Química do Sangue , Ecocardiografia Doppler , Eletrocardiografia , Animais , Animais de Laboratório/anatomia & histologia , Animais de Laboratório/fisiologia , Animais de Zoológico/anatomia & histologia , Animais de Zoológico/sangue , Feminino , Masculino , Troponina I/sangue
6.
BMC Infect Dis ; 21(1): 827, 2021 Aug 17.
Artigo em Inglês | MEDLINE | ID: mdl-34404348

RESUMO

BACKGROUND: According to the literature, 25% to 50% of antimicrobials prescribed in hospitals are unnecessary or inappropriate, directly impacting antimicrobial resistance. Thus, the present study aimed to evaluate the use of antimicrobials in a university hospital in Northeast Brazil, using days of therapy (DOT) and length of therapy (LOT) indicators in accordance with the latest national and international recommendations for monitoring the use of antimicrobials. METHODS: This is an observational, prospective analytical study conducted in a teaching hospital, with 94 active beds, distributed between the intensive care unit (ICU), the surgical clinic (SUR), the medical clinic (MED), the pneumology/infectology department (PNE/INF) and pediatrics (PED). The duration of the study was from the beginning of January to the end of December 2018. RESULTS: During the study period, a total of 11,634 patient-days were followed up and 50.4% of the patients were found to have received some antimicrobial, with a significant reduction in use of 1% per month throughout the year. Patients were receiving antimicrobial therapy for 376 days in every 1000 days of hospitalization (LOT = 376/1000pd). Overall, the 1st-generation cephalosporins and fluoroquinolones were the most used in respect of the number of prescriptions and the duration of therapy. The calculated global DOT/LOT ratio showed that each patient received an average of 1.5 antimicrobials during the hospital stay. The incidence of antimicrobial resistance, globally, for both methicillin-resistant Staphylococcus aureus (methicillin R), Carbapenem-resistant Klebsiella pneumoniae, Pseudomonas aeruginosa and Acinetobacter baumannii (Carbapenem R), was 1 per 1000 patient-days. CONCLUSIONS: The results obtained from the analyses revealed that half of the patients admitted to the hospital who took part in the study were exposed to the use of antimicrobials at some point during their stay. Although moderate, it is noteworthy that there was a decline in the use of antimicrobials throughout the year. The indicators used in this study were found to be very effective for gathering data on the use of antimicrobials, and assessing the results of the initiatives taken as part of the Stewardship program.


Assuntos
Anti-Infecciosos , Staphylococcus aureus Resistente à Meticilina , Antibacterianos/uso terapêutico , Carbapenêmicos , Criança , Hospitais , Humanos , Estudos Prospectivos
7.
Scand J Med Sci Sports ; 31(8): 1592-1611, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33797115

RESUMO

This systematic review and meta-analysis examined studies on the chronic effects of exergames on muscle strength in humans. PubMed, Scopus, CENTRAL, Web of Science, SciELO, Biblioteca Virtual em Saúde, and Google Scholar were searched, and manual searches of the reference lists of included studies and hand-searches on Physiotherapy Evidence Database and ResearchGate were conducted from inception to August 10, 2020. Randomized and non-randomized exergame intervention studies with or without a non-exercise group and/or a "usual care intervention group" (any other intervention that did not incorporate exergames), which evaluated muscle strength through direct measurements, were included. Forty-seven and 25 studies were included in the qualitative review and meta-analysis, respectively. The between-groups meta-analyses showed no significant differences between exergames and non-exercise control groups for handgrip strength in heathy/unhealthy middle-aged/older adults or knee extension maximum voluntary isometric contraction (MVIC) in healthy older adults. However, exergames provided a greater increase in handgrip strength, knee flexion MVIC, and elbow extension MVIC, but not knee extension MVIC or elbow flexion MVIC, in individuals with different health statuses when compared to usual care interventions. Also, there was a greater increase in handgrip strength in children with hemiplegic cerebral palsy favouring usual care plus exergames compared to usual care interventions. These results suggest that exergames may improve upper and lower limb muscle strength in individuals with different heath statuses compared to usual care interventions, but not muscle strength in middle age/older adults after accounting for random error. Also, exergames appear to be a useful tool for improving handgrip strength in children with hemiplegic cerebral palsy when added to usual care. However, as the exergame interventions were applied in different populations and there currently are many different approaches to perform exergames, future randomized controlled trials with high methodological quality and large sample sizes are needed to provide more compelling evidence in favour of a specific exergame protocol, or to elucidate exergame protocol design principles that appear to strongly influence outcomes.


Assuntos
Terapia por Exercício/métodos , Força Muscular/fisiologia , Jogos de Vídeo , Humanos
8.
J Thromb Thrombolysis ; 49(4): 667-672, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-31898273

RESUMO

Few data are available regarding epidemiology and outcomes of Philadelphia-negative chronic myeloproliferative neoplasms (MPN) in Latin America. Therefore, current models for MPN treatment are based in large cohorts of patients from Europe and North America. In this paper, we conducted a retrospective study to evaluate thrombotic and bleeding events in a cohort of patients with MPN from a reference center in Brazil. A total of 334 patients were included, being essential thrombocythemia the most common diagnosis. Here, we found that 41% of the MPN patients had a thrombotic event prior to the diagnosis. Thrombosis was more frequent in patients under 60 years-old. In a multivariable model, only JAK2 V617F mutation (OR 2.57 95% CI 1.58-4.18, p < 0.001) and presence of two cardiovascular risk factors (OR 1.90 95% CI 1.21-2.98, p < 0.005) were significant for thrombosis. The risk of thrombosis was similar among all subtypes of MPN. Cumulative incidence of thromboembolic event at 5 years from diagnosis was 5.8% (95% CI 3.5-8.9), which is similar to previous studies. The high incidence of thromboembolic events in younger patients suggests that socioeconomic disparities might have a role in the outcomes of MPN.


Assuntos
Hemorragia/epidemiologia , Transtornos Mieloproliferativos/complicações , Trombose/epidemiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Brasil/epidemiologia , Feminino , Hemorragia/etiologia , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Transtornos Mieloproliferativos/mortalidade , Transtornos Mieloproliferativos/terapia , Estudos Retrospectivos , Fatores de Risco , Trombose/etiologia , Adulto Jovem
9.
J Mater Sci Mater Med ; 29(8): 130, 2018 Aug 03.
Artigo em Inglês | MEDLINE | ID: mdl-30074096

RESUMO

The development of a myriad of nanoparticles types has opened new possibilities for the diagnostics and treatment of many diseases, especially for cancer. However, most of the researches done so far do not focus on the protection of normal cells surrounding a tumor from irradiation bystander effects that might lead to cancer recurrence. Gap-junctions are known to be involved in this process, which leads to genomic instability of neighboring normal cells, and flufenamic acid (FFA) is included in a new group of gap-junction blockers recently discovered. The present work explores the use of mesoporous silica nanoparticles MCM-41 functionalized with 3-Aminopropyltriethoxysilane (APTES) for anchoring the flufenamic acid for its prolonged and controlled release and protection from radiation bystander effects. MCM-41 and functionalized samples were structurally and chemically characterized with multiple techniques. The biocompatibility of all samples was tested in a live/dead assay performed in cultured MRC-5 and HeLa cells. HeLa cells cultured were exposed to 50 Gy of gamma-rays and the media transferred to fibroblast cells cultured separately. Our results show that MCM-41 and functionalized samples have high biocompatibility with MCR-5 and HeLa cells, and most importantly, the FFA delivered by these NPs was able to halt apoptosis, one of main bystander effects.


Assuntos
Efeito Espectador/efeitos da radiação , Ácido Flufenâmico/química , Ácido Flufenâmico/farmacologia , Nanopartículas/química , Dióxido de Silício/química , Dióxido de Silício/farmacologia , Efeito Espectador/efeitos dos fármacos , Linhagem Celular , Fibroblastos/efeitos dos fármacos , Fibroblastos/efeitos da radiação , Raios gama/efeitos adversos , Humanos , Teste de Materiais , Microscopia Eletrônica de Varredura
10.
Int Wound J ; 14(6): 1019-1024, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28488305

RESUMO

The aim of this study was to systematically review the use of medicinal plants for the treatment of varicose ulcers. The databases used in the search were: Medline/Pubmed, Scopus, Cinhal, Lilacs and Web of Science. The selection process was divided into two phases: the reading of titles and abstracts and the full reading of selected articles. The item description was compared with the checklist of the Consolidated Standards of Reporting Trials. The initial search produced 3505 articles and seven were selected for inclusion in the systematic review. Of the included studies, 7 (100%) evaluated the reduction of the ulcer area, 4 (57·14%) evaluated reepithelisation, 2 (28·57%) evaluated bacterial flora and 1 (14·28%) evaluated the oxygen pressure and percutaneous carbon dioxide. The level of evidence rating indicated that five studies (71·42%) were rated at level 2 and two (28·57%) were rated at level 3. The quality assessment was performed using the Jadad scale, which is prevalent in the literature. The quality score of the Jadad questionnaire ranges from 0 to 5; here, the studies analysed had an average of 2·5. A meta-analysis was performed on two studies that analysed the effects of Mimosa tenuiflora hydrogel in the treatment of venous ulcer and included 42 patients with a mean age of 60·5 years and a mean duration of treatment of 10·5 weeks. Heterogeneity was assessed using I2 ; we obtained a high value of 84%. We concluded that, despite the efficacy of the incorporation of Ageratina pichinchensis into the gel, the hydrogel that incorporated M. tenuiflora appeared to be a promising candidate for the management of venous ulcers.


Assuntos
Antibacterianos/uso terapêutico , Extratos Vegetais/uso terapêutico , Plantas Medicinais/química , Úlcera Varicosa/tratamento farmacológico , Cicatrização/efeitos dos fármacos , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
11.
J Med Primatol ; 45(1): 3-11, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26555766

RESUMO

BACKGROUND: The objective was to evaluate the procollagen type I N-propeptide (PINP), osteocalcin (OC), ß-crosslaps (ß-CTX), and parathyroid hormone (PTH) in relation to age and sex of Chlorocebus aethiops in captivity. METHODS: Seventy-three monkeys were divided into four age groups: AG1 (juvenile); AG2 (young adult); AG3 (adult); and AG4 (senile). An electrochemiluminescence immunoassay with an Elecsys 2010 analyzer was used to determine the serum markers of bone. RESULTS AND CONCLUSIONS: Sex did not influence the results of the markers. However, the variables PINP, OC, and ß-CTX were negatively correlated with age (r = -0.643; r = -0.711; r = -0.488; P < 0.001, respectively), and PTH was correlated positively with age (r = 0.418, P < 0.001). The data obtained can be used as biomarkers of bone metabolism reference intervals in healthy C. aethiops in captivity.


Assuntos
Biomarcadores/sangue , Doenças Ósseas Metabólicas/veterinária , Remodelação Óssea/fisiologia , Chlorocebus aethiops/fisiologia , Doenças dos Macacos/diagnóstico , Fatores Etários , Animais , Análise Química do Sangue/veterinária , Doenças Ósseas Metabólicas/diagnóstico , Doenças Ósseas Metabólicas/fisiopatologia , Chlorocebus aethiops/sangue , Colágeno/sangue , Feminino , Testes Hematológicos/veterinária , Masculino , Doenças dos Macacos/fisiopatologia , Osteocalcina/sangue , Hormônio Paratireóideo/sangue , Fragmentos de Peptídeos/sangue , Pró-Colágeno/sangue , Fatores Sexuais
12.
Parasitol Res ; 114(3): 809-21, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25518818

RESUMO

Toxocariasis is a globally distributed parasitic infection caused by the larval stage of Toxocara spp. The typical natural hosts of the parasite are dogs and cats, but humans can be infected by the larval stage of the parasite after ingesting embryonated eggs in soil or from contaminated hands or fomites. The migrating larvae are not adapted to complete their life cycle within accidental or paratenic hosts like humans and laboratory animals, respectively, but they are capable of invading viscera or other tissues where they may survive and induce disease. In order to characterize hamsters (Mesocricetus auratus) as a model for Toxocara canis infection, histopathological and immunohistochemistry procedures were used to detect pathological lesions and the distribution of toxocaral antigens in the liver, lungs, and kidneys of experimentally infected animals. We also attempted to characterize the immunological parameters of the inflammatory response and correlate them with the histopathological findings. In the kidney, a correlation between glomerular changes and antigen deposits was evaluated using immunoelectron microscopy. The hamster is an adequate model of experimental toxocariasis for short-term investigations and has a good immunological and pathological response to the infection. Lung and liver manifestations of toxocariasis in hamsters approximated those in humans and other experimental animal models. A mixed Th2 immunological response to T. canis infection was predominant. The hamster model displayed a progressive rise of anti-toxocaral antibodies with the formation of immune complexes. Circulating antigens, immunoglobulin, and complement deposits were detected in the kidney without the development of a definite immune complex nephropathy.


Assuntos
Toxocara/parasitologia , Toxocaríase/patologia , Toxocaríase/parasitologia , Animais , Antígenos de Helmintos/análise , Proteínas do Sistema Complemento/análise , Cricetinae , Modelos Animais de Doenças , Imunoglobulinas/análise , Imuno-Histoquímica , Rim/imunologia , Rim/parasitologia , Rim/patologia , Larva/crescimento & desenvolvimento , Estágios do Ciclo de Vida , Fígado/imunologia , Fígado/parasitologia , Fígado/patologia , Pulmão/imunologia , Pulmão/parasitologia , Pulmão/patologia , Mesocricetus , Microscopia Imunoeletrônica , Toxocara/imunologia , Toxocaríase/imunologia
13.
Exp Parasitol ; 147: 81-4, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25307687

RESUMO

In this work, we analyze the leishmanicidal effects of epoxy-α-lapachone on Leishmania (Viannia) braziliensis and Leishmania (Leishmania) amazonensis. Promasigotes and amastigotes (inhabiting human macrophages) from both species were assayed to verify the compound's activity over the distinct morphological stages. The incubation with epoxy-α-lapachone led to a significant decrease in the numbers of promastigotes from both species in the cultures, in a dose-and time-dependent fashion. The survival of amastigotes inhabiting human macrophages was also drastically affected by the compound, as shown by the variations in the endocytic index. Our results indicate that the epoxy-α-lapachone has an antiparasitic effect over Leishmania in both morphological stages and may potentially affect a range of species in two distinct subgenera of this parasite.


Assuntos
Antiprotozoários/farmacologia , Leishmania braziliensis/efeitos dos fármacos , Leishmania mexicana/efeitos dos fármacos , Naftoquinonas/farmacologia , Antiprotozoários/química , Relação Dose-Resposta a Droga , Humanos , Macrófagos/efeitos dos fármacos , Macrófagos/parasitologia , Naftoquinonas/química , Fatores de Tempo
14.
Exp Parasitol ; 147: 72-80, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25448360

RESUMO

Matrix metalloproteinases (MMPs) constitute a large family of Zn(2+) and Ca(2+) dependent endopeptidases implicated in tissue remodeling and chronic inflammation. MMPs also play key roles in the activation of growth factors, chemokines and cytokines produced by many cell types, including lymphocytes, granulocytes, and, in particular, activated macrophages. Their synthesis and secretion appear to be important in a number of physiological processes, including the inflammatory process. Here, we investigated the interaction between human and mouse macrophages with T. cruzi Colombian and Y strains to characterize MMP-9 and cytokine production in this system. Supernatants and total extract of T. cruzi infected human and mouse macrophages were obtained and used to assess MMP-9 profile and inflammatory cytokines. The presence of metalloproteinase activity was determined by zymography, enzyme-linked immunosorbent assay and immunoblotting assays. The effect of cytokines on MMP-9 production in human macrophages was verified by previous incubation of cytokines on these cells in culture, and analyzed by zymography. We detected an increase in MMP-9 production in the culture supernatants of T. cruzi infected human and mouse macrophages. The addition of IL-1ß or TNF-α to human macrophage cultures increased MMP-9 production. In contrast, MMP-9 production was down-modulated when human macrophage cultures were treated with IFN-γ or IL-4 before infection. Human macrophages infected with T. cruzi Y or Colombian strains produced increased levels of MMP-9, which was related to the production of cytokines such as IL-1ß, TNF-α and IL-6.


Assuntos
Citocinas/biossíntese , Macrófagos/parasitologia , Metaloproteinase 9 da Matriz/biossíntese , Trypanosoma cruzi/fisiologia , Animais , Western Blotting , Linhagem Celular , Doença de Chagas/enzimologia , Doença de Chagas/imunologia , Doença de Chagas/patologia , Ensaio de Imunoadsorção Enzimática , Humanos , Macrófagos/enzimologia , Macrófagos/imunologia , Metaloproteinase 9 da Matriz/metabolismo , Camundongos , Monócitos/citologia , Trypanosoma cruzi/imunologia
15.
Sci Rep ; 14(1): 15421, 2024 07 04.
Artigo em Inglês | MEDLINE | ID: mdl-38965297

RESUMO

Aedes aegypti and Aedes albopictus are the main vectors of arboviruses such as Dengue, Chikungunya and Zika, causing a major impact on global economic and public health. The main way to prevent these diseases is vector control, which is carried out through physical and biological methods, in addition to environmental management. Although chemical insecticides are the most effective strategy, they present some problems such as vector resistance and ecotoxicity. Recent research highlights the potential of the imidazolium salt "1-methyl-3-octadecylimidazolium chloride" (C18MImCl) as an innovative and environmentally friendly solution against Ae. aegypti. Despite its promising larvicidal activity, the mode of action of C18MImCl in mosquito cells and tissues remains unknown. This study aimed to investigate its impacts on Ae. aegypti larvae and three cell lines of Ae. aegypti and Ae. albopictus, comparing the cellular effects with those on human cells. Cell viability assays and histopathological analyses of treated larvae were conducted. Results revealed the imidazolium salt's high selectivity (> 254) for mosquito cells over human cells. After salt ingestion, the mechanism of larval death involves toxic effects on midgut cells. This research marks the first description of an imidazolium salt's action on mosquito cells and midgut tissues, showcasing its potential for the development of a selective and sustainable strategy for vector control.


Assuntos
Aedes , Imidazóis , Inseticidas , Larva , Aedes/efeitos dos fármacos , Animais , Larva/efeitos dos fármacos , Imidazóis/toxicidade , Imidazóis/farmacologia , Inseticidas/toxicidade , Inseticidas/farmacologia , Humanos , Mosquitos Vetores/efeitos dos fármacos , Linhagem Celular , Sobrevivência Celular/efeitos dos fármacos , Controle de Mosquitos/métodos
16.
Complement Ther Clin Pract ; 56: 101864, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38830273

RESUMO

BACKGROUND: Yoga practice can increase blood flow in the genital area, increase muscular strength, and improve body perception, which is related to sexual function. This study aimed to summarize the available evidence about the effects of yoga on sexual function in adults. METHODS: Systematic searches of five databases were conducted from inception to April 28, with the last update on September 28, 2023. Randomized clinical trials (RCTs) that compared yoga with nonintervention control groups on sexual function in adults. Risk of bias and certainty of evidence were assessed by the Cochrane risk of bias tool 2, and the GRADE approach, respectively. Summary effect size measures were calculated using a random-effects model estimation and are reported as standardized mean differences and 95% confidence intervals. Reporting followed the PRISMA guidelines. RESULTS: Ten RCTs that comprised 730 adults (range mean age, 26.64-68.2 years; 680 [93.2 %] women) were included. For the primary outcome, yoga intervention was associated with a significant small improvement in sexual function (-0.31; -0.47 to -0.15, p = 0.0002), with some concerns about risk of bias in nine RCTs (90%) and low-certainty evidence. Subgroup analyses revealed that yoga interventions performed by women (-0.36; -0.52 to -0.21, p < 0.00001), healthy individuals (-0.38; -0.59 to -0.16, p = 0.0006), or middle-aged individuals (-0.44; -0.63 to -0.25, p < 00001) significantly improved sexual function compared with control groups. CONCLUSION: Yoga was associated with a small improvement in sexual function compared with nonintervention control groups in adults. However, high-quality, larger RCTs are required to draw more definitive conclusions.


Assuntos
Ensaios Clínicos Controlados Aleatórios como Assunto , Yoga , Humanos , Feminino , Adulto , Masculino , Disfunções Sexuais Fisiológicas/terapia , Pessoa de Meia-Idade , Comportamento Sexual , Idoso
17.
Eur J Pharmacol ; 977: 176723, 2024 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-38851560

RESUMO

Acute lymphoblastic leukemia (ALL), a complex malignancy, displays varying expression profiles of PIP4K2-related genes in adult patients. While PIP4K2A expression is elevated in ALL bone marrow cells compared to healthy bone marrow cells, PIP4K2B is downregulated, and PIP4K2C remains relatively unchanged. Despite the correlation between increased PIP4K2A expression and increased percentage of peripheral blood blasts, clinical outcomes do not strongly correlate with the expression of these genes. Here we investigated the therapeutic potential of three PIP4K2 inhibitors (THZ-P1-2, a131, and CC260) in ALL cell models. THZ-P1-2 emerges as the most effective inhibitor, inducing cell death and mitochondrial damage while reducing cell viability and metabolism significantly. Comparative analyses highlight the superior efficacy of THZ-P1-2 over a131 and CC260. Notably, THZ-P1-2 uniquely disrupts autophagic flux and inhibits the PI3K/AKT/mTOR pathway, indicating a distinct molecular mechanism. In summary, our findings elucidate the differential expression of PIP4K2-related genes in ALL and underscore the potential role of PIP4K2A in disease pathogenesis. The therapeutic promise of THZ-P1-2 in ALL treatment, along with its distinct effects on cell death mechanisms and signaling pathways, enriches our understanding of PIP4K2's involvement in ALL development and offers targeted therapy prospects.


Assuntos
Fosfotransferases (Aceptor do Grupo Álcool) , Leucemia-Linfoma Linfoblástico de Células Precursoras , Humanos , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamento farmacológico , Leucemia-Linfoma Linfoblástico de Células Precursoras/genética , Leucemia-Linfoma Linfoblástico de Células Precursoras/patologia , Fosfotransferases (Aceptor do Grupo Álcool)/antagonistas & inibidores , Fosfotransferases (Aceptor do Grupo Álcool)/genética , Linhagem Celular Tumoral , Transdução de Sinais/efeitos dos fármacos , Proteínas Proto-Oncogênicas c-akt/metabolismo , Antineoplásicos/farmacologia , Antineoplásicos/uso terapêutico , Serina-Treonina Quinases TOR/metabolismo , Serina-Treonina Quinases TOR/antagonistas & inibidores , Autofagia/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Fosfatidilinositol 3-Quinases/metabolismo , Inibidores Enzimáticos/farmacologia , Inibidores Enzimáticos/uso terapêutico , Inibidores de Proteínas Quinases/farmacologia , Inibidores de Proteínas Quinases/uso terapêutico , Apoptose/efeitos dos fármacos
18.
Trends Parasitol ; 39(9): 774-785, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37442747

RESUMO

Human leishmaniosis caused by Leishmania infantum is an important health problem worldwide. One of the main aspects arousing interest is the epidemiological scenario surrounding Le. infantum infection in the New World (NW) and Old World (OW). This parasite was introduced to the Americas during European colonization leading to different epidemiology outcomes, even more enigmatic in the face of global changes. Thus, this review aims to highlight the differences and similarities between Le. infantum epidemiology between Brazil (NW) and Spain (OW), as both countries are leading the total number of leishmaniosis cases in their respective continents. Grounded on a systemic view, this article also draws attention to possible common innovative strategies to rethink ways of controlling infections caused by Le. infantum.


Assuntos
Leishmania infantum , Leishmaniose Visceral , Leishmaniose , Parasitos , Animais , Humanos , Leishmaniose Visceral/epidemiologia , Leishmaniose Visceral/prevenção & controle , Leishmaniose Visceral/parasitologia , Espanha/epidemiologia , Brasil/epidemiologia
19.
3D Print Addit Manuf ; 10(3): 420-427, 2023 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-37346194

RESUMO

This article evaluates an active thermography algorithm to detect subsurface defects in materials made by additive manufacturing (AM). It is based on the techniques of thermographic signal reconstruction (TSR), thermal contrast, and the physical principles of heat transfer. The subsurface defects have different infill, depth, and size. The results obtained from this algorithm are compared with state-of-the-art TSR technique and show the high performance of the proposed algorithm even for subsurface defects done by 3D AM. The resulting images are better shown using the absolute difference in the place of variance. The proposed algorithm has higher contrast, better sensitivity to the defect depths, and lower noise than the TSR. The resultant image is quite clean and gives no doubt where the subsurface defects are.

20.
Int J Stem Cells ; 16(4): 425-437, 2023 Nov 30.
Artigo em Inglês | MEDLINE | ID: mdl-37643763

RESUMO

Obesity, which continues to increase worldwide, was shown to irreversibly impair the differentiation potential and angiogenic properties of adipose tissue mesenchymal stromal cells (ADSCs). Because these cells are intended for regenerative medicine, especially for the treatment of inflammatory conditions, and the effects of obesity on the immunomodulatory properties of ADSCs are not yet clear, here we investigated how ADSCs isolated from former obese subjects (Ex-Ob) would influence macrophage differentiation and polarization, since these cells are the main instructors of inflammatory responses. Analysis of the subcutaneous adipose tissue (SAT) of overweight (OW) and Ex-Ob subjects showed the maintenance of approximately twice as many macrophages in Ex-Ob SAT, contained within the CD68+/FXIII-A- inflammatory pool. Despite it, in vitro, coculture experiments revealed that Ex-Ob ADSCs instructed monocyte differentiation into a M2-like profile, and under inflammatory conditions induced by LPS treatment, inhibited HLA-DR upregulation by resting M0 macrophages, originated a similar percentage of TNF-α+ cells, and inhibited IL-10 secretion, similar to OW-ADSCs and BMSCs, which were used for comparison, as these are the main alternative cell types available for therapeutic purposes. Our results showed that Ex-Ob ADSCs mirrored OW-ADSCs in macrophage education, favoring the M2 immunophenotype and a mixed (M1/M2) secretory response. These results have translational potential, since they provide evidence that ADSCs from both Ex-Ob and OW subjects can be used in regenerative medicine in eligible therapies. Further in vivo studies will be fundamental to validate these observations.

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