RESUMO
Abstract Background Myofascial pain syndrome (MPS) is a common source of pain in primary care or pain clinics. There are many different ways to manage and treat MPS, such as physical exercise, trigger points massage, and dry needling. Objective The objective of this overview is to highlight and discuss the evidence-based treatment of myofascial pain by dry needling in patients with low back pain. Methods A systematic review was made based on meta-analysis (MA) and randomized controlled trials (RCTs) related to dry needling treatment for myofascial pain in patients with lumbar pain, published from 2000 to 2023. Results A total of 509 records were identified at first. Seventy were published before 2000, so they were excluded. From the remaining 439 studies, ninety-two were RCTs or MA, of which 86 additional studies were excluded for the following reasons: not related to dry needling treatment (n = 79), not published in English (n = 4), duplicated (n = 1), project protocol (n = 1), and not related to myofascial pain (n = 1). So, this review was based on 4 RCTs and two MA. These studies compared dry needling efficacy to other treatments, such as acupuncture, sham dry needling, laser therapy, physical therapy, local anesthetic injection, ischemic compression, and neuroscience education. Despite outcomes and follow-up period varied between them, they showed that dry needling can decrease post-intervention pain intensity and pain disability. Conclusion Dry needling is an effective procedure for the treatment of myofascial pain in patients with acute and chronic low back pain. Further high-quality studies are needed to clarify the long-term outcomes.
Resumo Antecedentes A síndrome dolorosa miofascial (SDM) é uma fonte comum de dor em centros primários de atenção à saúde ou nas clínicas de dor. Existem muitas formas diferentes de manejar e tratar a SDM, como o exercício físico, a massagem dos pontos de gatilho e o agulhamento a seco. Objetivo O objetivo desta revisão é destacar e discutir o tratamento baseado em evidências da dor miofascial por agulhamento a seco em doentes com dor lombar. Métodos Foi realizada uma revisão sistemática baseada em metanálises (MA) e ensaios clínicos randomizados (RCTs) relacionados ao tratamento da dor miofascial com agulhamento a seco em pacientes com dor lombar, publicados de 2000 a 2023. Resultados Foram identificados, inicialmente, um total de 509 registos. Setenta deles, publicados antes de 2000, foram excluídos. Dos 439 estudos restantes, 92 eram RCTs ou MA, dos quais 86 foram excluídos pelas seguintes razões: não relacionados a tratamento com agulhamento a seco (n = 79), não publicados em inglês (n = 4), duplicados (n = 1), protocolo de projeto (n = 1) e não relacionados com dor miofascial (n = 1). Assim, esta revisão baseou-se em quatro RCTs e duas MA. Esses estudos compararam a eficácia do agulhamento seco com outros tratamentos, tais como acupuntura, agulhamento a seco "sham", terapia com laser, fisioterapia, injeção de anestésico local, compressão isquêmica e educação em neurociências. Apesar de os resultados e o período de seguimento variarem entre os estudos, os estudos demonstram que o agulhamento a seco pode diminuir a intensidade da dor pós-intervenção e a incapacidade relacionada à dor. Conclusão O agulhamento a seco é um procedimento eficaz para o tratamento da dor miofascial em pacientes com dor lombar aguda e crônica. Mais estudos são necessários para esclarecer sua eficácia a longo prazo.
RESUMO
BACKGROUND: Myofascial pain syndrome (MPS) is a common source of pain in primary care or pain clinics. There are many different ways to manage and treat MPS, such as physical exercise, trigger points massage, and dry needling. OBJECTIVE: The objective of this overview is to highlight and discuss the evidence-based treatment of myofascial pain by dry needling in patients with low back pain. METHODS: A systematic review was made based on meta-analysis (MA) and randomized controlled trials (RCTs) related to dry needling treatment for myofascial pain in patients with lumbar pain, published from 2000 to 2023. RESULTS: A total of 509 records were identified at first. Seventy were published before 2000, so they were excluded. From the remaining 439 studies, ninety-two were RCTs or MA, of which 86 additional studies were excluded for the following reasons: not related to dry needling treatment (n = 79), not published in English (n = 4), duplicated (n = 1), project protocol (n = 1), and not related to myofascial pain (n = 1). So, this review was based on 4 RCTs and two MA. These studies compared dry needling efficacy to other treatments, such as acupuncture, sham dry needling, laser therapy, physical therapy, local anesthetic injection, ischemic compression, and neuroscience education. Despite outcomes and follow-up period varied between them, they showed that dry needling can decrease post-intervention pain intensity and pain disability. CONCLUSION: Dry needling is an effective procedure for the treatment of myofascial pain in patients with acute and chronic low back pain. Further high-quality studies are needed to clarify the long-term outcomes.
ANTECEDENTES: A síndrome dolorosa miofascial (SDM) é uma fonte comum de dor em centros primários de atenção à saúde ou nas clínicas de dor. Existem muitas formas diferentes de manejar e tratar a SDM, como o exercício físico, a massagem dos pontos de gatilho e o agulhamento a seco. OBJETIVO: O objetivo desta revisão é destacar e discutir o tratamento baseado em evidências da dor miofascial por agulhamento a seco em doentes com dor lombar. MéTODOS: Foi realizada uma revisão sistemática baseada em metanálises (MA) e ensaios clínicos randomizados (RCTs) relacionados ao tratamento da dor miofascial com agulhamento a seco em pacientes com dor lombar, publicados de 2000 a 2023. RESULTADOS: Foram identificados, inicialmente, um total de 509 registos. Setenta deles, publicados antes de 2000, foram excluídos. Dos 439 estudos restantes, 92 eram RCTs ou MA, dos quais 86 foram excluídos pelas seguintes razões: não relacionados a tratamento com agulhamento a seco (n = 79), não publicados em inglês (n = 4), duplicados (n = 1), protocolo de projeto (n = 1) e não relacionados com dor miofascial (n = 1). Assim, esta revisão baseou-se em quatro RCTs e duas MA. Esses estudos compararam a eficácia do agulhamento seco com outros tratamentos, tais como acupuntura, agulhamento a seco "sham", terapia com laser, fisioterapia, injeção de anestésico local, compressão isquêmica e educação em neurociências. Apesar de os resultados e o período de seguimento variarem entre os estudos, os estudos demonstram que o agulhamento a seco pode diminuir a intensidade da dor pós-intervenção e a incapacidade relacionada à dor. CONCLUSãO: O agulhamento a seco é um procedimento eficaz para o tratamento da dor miofascial em pacientes com dor lombar aguda e crônica. Mais estudos são necessários para esclarecer sua eficácia a longo prazo.
Assuntos
Agulhamento Seco , Dor Lombar , Síndromes da Dor Miofascial , Humanos , Prática Clínica Baseada em Evidências , Dor Lombar/terapia , Síndromes da Dor Miofascial/terapia , Indução Percutânea de Colágeno , Pontos-GatilhoRESUMO
OBJECTIVES: The objective of the present study was to assess the presence of cognitive deficits in patients with chronic migraine, and to assess the main factors that trigger cognitive disorders, such as comorbidities or the use of medications. METHODS: Chronic migraine and control groups were interviewed in a case-control study. The frequency and intensity of the headache, medication used and associated comorbidities were determined. All patients were submitted to an extended neuropsychological assessment. RESULTS: The chronic migraine group (n = 30) had a worse performance in the Montreal Cognitive Assessment Test (p = 0.00), Verbal Fluency (p = 0.00), Stroop (p = 0.00), Clock Drawing Test (p = 0.00), Digit Span (p = 0.00) and Matrix Reasoning (p = 0.01). After statistical adjustment by linear regression, migraine continued to be the only relevant factor in the poorer performance in the Montreal Cognitive Assessment, Verbal Fluency, Clock Drawing and Stroop tests. CONCLUSIONS: Patients with chronic migraine have cognitive deficits in multiple tasks, regardless of the presence of comorbidities or the use of medications.
Assuntos
Disfunção Cognitiva/psicologia , Transtornos de Enxaqueca/psicologia , Testes Neuropsicológicos , Adolescente , Adulto , Estudos de Casos e Controles , Doença Crônica , Disfunção Cognitiva/complicações , Estudos Transversais , Escolaridade , Feminino , Humanos , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Transtornos de Enxaqueca/diagnóstico , Comportamento Verbal/fisiologia , Adulto JovemRESUMO
ABSTRACT The objective of the present study was to assess the presence of cognitive deficits in patients with chronic migraine, and to assess the main factors that trigger cognitive disorders, such as comorbidities or the use of medications. Methods: Chronic migraine and control groups were interviewed in a case-control study. The frequency and intensity of the headache, medication used and associated comorbidities were determined. All patients were submitted to an extended neuropsychological assessment. Results: The chronic migraine group (n = 30) had a worse performance in the Montreal Cognitive Assessment Test (p = 0.00), Verbal Fluency (p = 0.00), Stroop (p = 0.00), Clock Drawing Test (p = 0.00), Digit Span (p = 0.00) and Matrix Reasoning (p = 0.01). After statistical adjustment by linear regression, migraine continued to be the only relevant factor in the poorer performance in the Montreal Cognitive Assessment, Verbal Fluency, Clock Drawing and Stroop tests. Conclusion: Patients with chronic migraine have cognitive deficits in multiple tasks, regardless of the presence of comorbidities or the use of medications.
RESUMO O objetivo do presente estudo foi avaliar a presença de déficits cognitivos em pacientes com migrânea crônica e avaliar os principais fatores que desencadeiam transtornos cognitivos, como comorbidades e uso de medicações. Métodos: Pacientes com migrânea crônica (n = 30) e controles foram entrevistados, em um estudo caso-controle. A frequência e intensidade da cefaleia, medicações utilizadas e comorbidades associadas foram determinadas. Todos os pacientes foram submetidos a uma avaliação neuropsicológica estendida. Resultados: Os pacientes com migrânea crônica apresentaram uma pior performance no Montreal Cognitive Assessment (p = 0.00), Fluência Verbal (p = 0.00), Teste de Stroop (p = 0.00), Teste do Relógio (p = 0.00), Subteste Dígitos (p = 0.00) e Raciocínio matricial da WAIS-III (p = 0.01). Após ajuste estatístico através de Regressão Linear, a migrânea se manteve como único fator relevante para pior desempenho em MoCA, Fluência verbal, Teste do relógio e Teste de Stroop. Conclusão: Pacientes com migrânea crônica apresentam déficits cognitivos incluindo múltiplas tarefas, independentes da presença de comorbidades e uso de medicações.
Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto , Pessoa de Meia-Idade , Adulto Jovem , Disfunção Cognitiva/psicologia , Transtornos de Enxaqueca/psicologia , Testes Neuropsicológicos , Comportamento Verbal/fisiologia , Estudos de Casos e Controles , Modelos Lineares , Doença Crônica , Estudos Transversais , Escolaridade , Disfunção Cognitiva/complicações , Transtornos de Enxaqueca/diagnósticoRESUMO
BACKGROUND: Menstrual migraine is a highly prevalent disorder among adult women, resulting in disability and loss of quality of life. Some studies have reported menstrual cycle synchrony among women living together. No study has reported whether there may also be a higher prevalence of menstrual migraine among these women. Thus, they reported here the prevalence of menstrual migraine in a group of women living together compared with a control group of women living alone, and discussed the possible factors involved. METHODS: The study was conducted on female university students aged 18-30 years with a diagnosis of migraine according to the criteria of the International Classification of Headache Disorders III, beta appendix criteria. The subjects were divided into a group of women who lived together with two or more other students and a control group of age-matched students who lived alone, interviewed with a specific questionnaire and assessed for 3 months by means of a paper pain diary. The data evaluated included frequency of headache, presence of menstrual migraine, intensity of headache, medications used including contraceptives, and triggering factors such as diet, sleep deprivation, and stress. The menstrual data and data related to migraine were also investigated in the roommates. RESULTS: A higher occurrence of menstrual migraine among women living together (9, 50%) compared with women living alone (3, 16.7%) (P = .03) was detected. After binary logistic regression analysis, this finding was not related to the main influencing factors detected, that is, use of a contraceptive, test stress, or sleep deprivation (P = .03, adjusted odds ratio: 7.87; 1.23-50.36). These women also showed menstrual cycle synchrony with their roommates (8, 44.4%) and the presence of headache crises during the menstruation of their colleagues (11, 61.1%). CONCLUSION: The present study detected a higher occurrence of menstrual migraine among women who lived together. Since there was no previous description of this topic in the literature, it was believed that the present study could represent a step toward more elaborate investigations of this complex topic.
Assuntos
Menstruação/fisiologia , Transtornos de Enxaqueca/epidemiologia , Transtornos de Enxaqueca/fisiopatologia , Adolescente , Adulto , Habitação , Humanos , Modelos Logísticos , Razão de Chances , Estudantes , Adulto JovemRESUMO
BACKGROUND: The fungal genus Sporothrix includes at least four human pathogenic species. One of these species, S. brasiliensis, is the causal agent of a major ongoing zoonotic outbreak of sporotrichosis in Brazil. Elsewhere, sapronoses are caused by S. schenckii and S. globosa. The major aims on this comparative genomic study are: 1) to explore the presence of virulence factors in S. schenckii and S. brasiliensis; 2) to compare S. brasiliensis, which is cat-transmitted and infects both humans and cats with S. schenckii, mainly a human pathogen; 3) to compare these two species to other human pathogens (Onygenales) with similar thermo-dimorphic behavior and to other plant-associated Sordariomycetes. RESULTS: The genomes of S. schenckii and S. brasiliensis were pyrosequenced to 17x and 20x coverage comprising a total of 32.3 Mb and 33.2 Mb, respectively. Pair-wise genome alignments revealed that the two species are highly syntenic showing 97.5% average sequence identity. Phylogenomic analysis reveals that both species diverged about 3.8-4.9 MYA suggesting a recent event of speciation. Transposable elements comprise respectively 0.34% and 0.62% of the S. schenckii and S. brasiliensis genomes and expansions of Gypsy-like elements was observed reflecting the accumulation of repetitive elements in the S. brasiliensis genome. Mitochondrial genomic comparisons showed the presence of group-I intron encoding homing endonucleases (HE's) exclusively in S. brasiliensis. Analysis of protein family expansions and contractions in the Sporothrix lineage revealed expansion of LysM domain-containing proteins, small GTPases, PKS type1 and leucin-rich proteins. In contrast, a lack of polysaccharide lyase genes that are associated with decay of plants was observed when compared to other Sordariomycetes and dimorphic fungal pathogens, suggesting evolutionary adaptations from a plant pathogenic or saprobic to an animal pathogenic life style. CONCLUSIONS: Comparative genomic data suggest a unique ecological shift in the Sporothrix lineage from plant-association to mammalian parasitism, which contributes to the understanding of how environmental interactions may shape fungal virulence. . Moreover, the striking differences found in comparison with other dimorphic fungi revealed that dimorphism in these close relatives of plant-associated Sordariomycetes is a case of convergent evolution, stressing the importance of this morphogenetic change in fungal pathogenesis.
Assuntos
Doenças do Gato/microbiologia , Proteínas Fúngicas/genética , Sporothrix/genética , Esporotricose/transmissão , Fatores de Virulência/genética , Adaptação Biológica , Animais , Doenças do Gato/transmissão , Gatos , Evolução Molecular , Especiação Genética , Genoma Mitocondrial , Humanos , Filogenia , Sporothrix/classificação , Sporothrix/patogenicidade , Esporotricose/microbiologia , Esporotricose/veterináriaRESUMO
The development of antibacterial and antifungal drugs has been the target of several pharmaceutical and chemical industries mainly due to the lack of effective drugs with low or no side effect. In this work, studies were conducted both in vitro and in vivo with 8-oxyquinolinepropoxycalix[4]arene (A) and 5-Cl-8-oxyquinolinepropoxycalix[4]arene (B) ligands, showing fairly good results. Cytotoxicity and fungicidal actions of compounds A and B were determined in Wistar male rats and peritoneal macrophages of mice. A slight change in the total of leukocytes and erythrocytes was observed on the hematologic assays, showing almost no inflammation after using both compounds in Wistar male rats. We have also noted some, but not significant, alteration in liver enzymes representing modest hepatotoxicity. Cytotoxicity of peritoneal macrophages, in the presence of compound A or B, showed 50% of survival of macrophages. On the other hand, macrophages previously infected with Candida albicans and treated with substance A or B exhibited an increased cytokine IL-10 at 24h incubation. By checking the effect of substance A or B on growing C. albicans, the results pointed that these substances revealed antifungal activity against C. albicans, in 24h culture with a reduction of yeast cells.
Assuntos
Antifúngicos/química , Calixarenos/química , Oxiquinolina/química , Fenóis/química , Animais , Antifúngicos/farmacologia , Calixarenos/farmacologia , Calixarenos/toxicidade , Candida albicans/efeitos dos fármacos , Linhagem Celular , Sobrevivência Celular/efeitos dos fármacos , Citocinas/metabolismo , Macrófagos/efeitos dos fármacos , Macrófagos/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Fenóis/farmacologia , Fenóis/toxicidade , Ratos , Ratos WistarRESUMO
BACKGROUND: Migraine, especially migraine with aura (MA), appears to be a risk factor for ischemic lesions in the posterior fossa. The clinical relevance of the lesions is uncertain. Accordingly, herein, we identified individuals with MA, migraine without aura (MO), and without migraine (controls) in order to investigate their balance and mobility. METHODS: Participants were selected among patients seen in an outpatient headache clinic. Controls had no history of headache. Balance was assessed by measuring the oscillation area using force plates and mobility was assessed with the Timed Up and Go test. RESULTS: Of 92 volunteers, 31 had MO (38 ± 10 years), 31 had MA (37 ± 8), and 30 were controls (33 ± 9). Subjects with MA had larger oscillation area (2.5 ± 1.4 cm(2) and 3.7 ± 2.9 cm(2) ) relative to those with MO (2.0 ± 1.7 cm(2) and 2.1 ± 2.2 cm(2) , P = .02) and controls (1.5 ± 0.8 cm(2) and 1.7 ± 1.2 cm(2) , P < .001) when standing in the bipodal position, respectively, with opened and closed eyes. MA was different with MO while standing in the unipodal position with eyes opened (right leg 6.7 ± 2.5 cm(2) vs 4.9 ± 1.7 cm(2) , P = .002; left leg 6.5 ± 2.7 cm(2) and 4.8 ± 1.4 cm(2) , P = .008). No differences were seen between MA and MO regarding the Timed Up and Go, although both groups were different than controls (8.5 seconds. and 6.5 seconds, P < .001; 8.2 and 6.5 seconds, P < .01, respectively). Dizziness symptoms happened in 25/31 (80%) of those with MA and 20/31 (65%) with MO, relative to 2/30 (6.5%) in controls (P < .0001 and P < .001). CONCLUSION: Aura negatively affects static balance and mobility in individuals with migraine. Dizziness is a prevalent symptom in this population.
Assuntos
Tontura/fisiopatologia , Enxaqueca com Aura/fisiopatologia , Enxaqueca sem Aura/fisiopatologia , Equilíbrio Postural/fisiologia , Caminhada/fisiologia , Adulto , Tontura/diagnóstico , Feminino , Humanos , Pessoa de Meia-Idade , Enxaqueca com Aura/diagnóstico , Enxaqueca sem Aura/diagnóstico , Projetos Piloto , Adulto JovemRESUMO
The chemical compositions and antimicrobial activities of essential oils from the leaves, stems, capitula, and cypselas of Chromolaena laevigata were evaluated at two different phenological stages, flowering and fruiting. Thirty-eight compounds were identified in the crude oils by GC/MS. The sesquiterpene laevigatin was the major constituent of the leaf, capitulum, and cypsela oils, while the sesquiterpene spathulenol was the main component in the stem oils. The antimicrobial activities of the oils were evaluated against Candida albicans, Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli. Stem oil obtained from Chromolaena laevigata during the fruiting stage generally showed the highest activity with minimum inhibitory concentration (MIC) values of 62.5â µg/ml against Candida albicans and S. aureus, and 500â µg/ml against P. aeruginosa and E. coli. Pure laevigatin exhibited MIC values of 500 and 125â µg/ml against C. albicans and S. aureus, respectively, indicating that this constituent could be responsible, at least in part, for the antimicrobial activities detected in the crude oils. More studies concerning the biological activities of isolated derivatives are required to improve our knowledge of the antimicrobial potential of volatile compounds present in native plants.
Assuntos
Anti-Infecciosos/química , Chromolaena/química , Óleos Voláteis/química , Anti-Infecciosos/isolamento & purificação , Anti-Infecciosos/farmacologia , Candida albicans/efeitos dos fármacos , Escherichia coli/efeitos dos fármacos , Cromatografia Gasosa-Espectrometria de Massas , Testes de Sensibilidade Microbiana , Óleos Voláteis/isolamento & purificação , Óleos Voláteis/farmacologia , Folhas de Planta/química , Caules de Planta/química , Pseudomonas aeruginosa/efeitos dos fármacos , Staphylococcus aureus/efeitos dos fármacosRESUMO
OBJECTIVE: The pathophysiology of migraine and restless legs syndrome (RLS) seems to involve inherited mechanism and dysfunction of the dopaminergic system. Previous articles have shown that the frequency of RLS is higher in migraine patients than in controls. We conducted a study to evaluate comorbidities, medication used and depressive symptoms that can explain the relation between migraine and RLS. METHODS: A case-control study was performed in which patients with migraine (n=72) and a control group without migraine (n=72) were interviewed. Data including RLS diagnosis, depressive symptoms, comorbidities and drugs used were evaluated. RESULTS: There was a significant association between migraine and RLS (p=0.01), but comorbidities such as diabetes, hypertension, anemia and drugs used did not explain this association. Depression scores, as measured by the Beck Depression Inventory, were higher in migraine patients with RLS (p =0.04). CONCLUSION: No specific factors explaining the association between migraine and RLS were found. Symptoms of depression were more frequent in patients with migraine and RLS.
OBJETIVO: A fisiopatologia da enxaqueca e da síndrome das pernas inquietas (SPI) parece envolver mecanismos genéticos e disfunção do sistema dopaminérgico. Artigos anteriores mostraram que a frequência de SPI em pacientes com enxaqueca é maior do que nos controles. Desenvolvemos um estudo para avaliar comorbidades, medicamentos utilizados e sintomas depressivos em pacientes com migrânea e SPI. MÉTODOS: Foi desenvolvido um estudo de caso-controle. Foram entrevistados pacientes com enxaqueca (n=72) e sujeitos de um grupo controle (n=72). Foram avaliados dados incluindo diagnóstico de SPI, sintomas depressivos, comorbidades e medicamentos usados. RESULTADOS: Houve associação significativa entre enxaqueca e SPI (p=0,01). Comorbidades como diabetes, hipertensão, anemia ou drogas utilizadas não explicam esta associação. Escores de depressão, medidos pelo Inventário de Beck, foram mais altos em pacientes com enxaqueca e SPI (p=0,04). CONCLUSÃO: Não foram encontrados fatores específicos que explicam a associação entre enxaqueca e SPI. Sintomas de depressão foram mais frequentes em pacientes com enxaqueca e SPI.
Assuntos
Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Transtornos de Enxaqueca/epidemiologia , Síndrome das Pernas Inquietas/epidemiologia , Distribuição por Idade , Brasil/epidemiologia , Comorbidade , Depressão/epidemiologia , Depressão/psicologia , Métodos Epidemiológicos , Transtornos de Enxaqueca/tratamento farmacológico , Transtornos de Enxaqueca/psicologia , Inventário de Personalidade , Síndrome das Pernas Inquietas/tratamento farmacológico , Síndrome das Pernas Inquietas/psicologia , Distribuição por SexoRESUMO
OBJECTIVE: The pathophysiology of migraine and restless legs syndrome (RLS) seems to involve inherited mechanism and dysfunction of the dopaminergic system. Previous articles have shown that the frequency of RLS is higher in migraine patients than in controls. We conducted a study to evaluate comorbidities, medication used and depressive symptoms that can explain the relation between migraine and RLS. METHODS: A case-control study was performed in which patients with migraine (n=72) and a control group without migraine (n=72) were interviewed. Data including RLS diagnosis, depressive symptoms, comorbidities and drugs used were evaluated. RESULTS: There was a significant association between migraine and RLS (p=0.01), but comorbidities such as diabetes, hypertension, anemia and drugs used did not explain this association. Depression scores, as measured by the Beck Depression Inventory, were higher in migraine patients with RLS (p =0.04). CONCLUSION: No specific factors explaining the association between migraine and RLS were found. Symptoms of depression were more frequent in patients with migraine and RLS.
Assuntos
Transtornos de Enxaqueca/epidemiologia , Síndrome das Pernas Inquietas/epidemiologia , Adolescente , Adulto , Distribuição por Idade , Idoso , Brasil/epidemiologia , Comorbidade , Depressão/epidemiologia , Depressão/psicologia , Métodos Epidemiológicos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Transtornos de Enxaqueca/tratamento farmacológico , Transtornos de Enxaqueca/psicologia , Inventário de Personalidade , Síndrome das Pernas Inquietas/tratamento farmacológico , Síndrome das Pernas Inquietas/psicologia , Distribuição por Sexo , Adulto JovemRESUMO
Limited information is available regarding the modulation of genes involved in the innate host response to Paracoccidioides brasiliensis, the etiologic agent of paracoccidioidomycosis. Therefore, we sought to characterize, for the first time, the transcriptional profile of murine bone marrow-derived dendritic cells (DCs) at an early stage following their initial interaction with P. brasiliensis. DCs connect innate and adaptive immunity by recognizing invading pathogens and determining the type of effector T-cell that mediates an immune response. Gene expression profiles were analyzed using microarray and validated using real-time RT-PCR and protein secretion studies. A total of 299 genes were differentially expressed, many of which are involved in immunity, signal transduction, transcription and apoptosis. Genes encoding the cytokines IL-12 and TNF-α, along with the chemokines CCL22, CCL27 and CXCL10, were up-regulated, suggesting that P. brasiliensis induces a potent proinflammatory response in DCs. In contrast, pattern recognition receptor (PRR)-encoding genes, particularly those related to Toll-like receptors, were down-regulated or unchanged. This result prompted us to evaluate the expression profiles of dectin-1 and mannose receptor, two other important fungal PRRs that were not included in the microarray target cDNA sequences. Unlike the mannose receptor, the dectin-1 receptor gene was significantly induced, suggesting that this ß-glucan receptor participates in the recognition of P. brasiliensis. We also used a receptor inhibition assay to evaluate the roles of these receptors in coordinating the expression of several immune-related genes in DCs upon fungal exposure. Altogether, our results provide an initial characterization of early host responses to P. brasiliensis and a basis for better understanding the infectious process of this important neglected pathogen.
Assuntos
Células Dendríticas/imunologia , Células Dendríticas/parasitologia , Perfilação da Expressão Gênica , Regulação da Expressão Gênica , Paracoccidioides/imunologia , Estresse Fisiológico , Animais , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Análise em Microsséries , Proteoma/análise , Reação em Cadeia da Polimerase em Tempo RealRESUMO
Paracoccidioidomycosis (PCM), endemic in Latin America, is a progressive systemic mycosis caused by Paracoccidioides brasiliensis (P. brasiliensis), which primarily attacks lung tissue. Dendritic cells (DCs) are able to initiate a response in naïve T cells, and they also participate in Th-cell education. Furthermore, these cells have been used for therapy in several disease models. Here we transfected DCs with a plasmid (pMAC/PS-scFv) encoding a single chain variable fragment (scFv) of an anti-Id antibody that is capable of mimicking gp43, the main antigenic component of P. brasiliensis. First, Balb/c mice were immunized subcutaneously with pMAC/PS-scFv and, after seven days, scFv protein was presented to the regional lymph nodes cells. Moreover, we showed that the DCs transfected with scFv were capable of efficiently activating proliferation of total lymph node cells and inducing a decrease in lung infection. Therefore, our results suggested that the use of scFv-transfected DCs may be a promising therapy in the paracoccidioidomycosis (PCM) model.