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1.
J Neuroimaging ; 33(5): 752-763, 2023.
Article in English | MEDLINE | ID: mdl-37381160

ABSTRACT

BACKGROUND AND PURPOSE: To determine the incidence of acute neuroimaging (NI) findings and comorbidities in the coronavirus disease of 2019 (COVID-19)-infected subjects in seven U.S. and four European hospitals. METHODS: This is a retrospective study of COVID-19-positive subjects with the following inclusion criteria: age >18, lab-confirmed COVID-19 infection, and acute NI findings (NI+) attributed to COVID-19 on CT or MRI brain. NI+ and comorbidities in total hospitalized COVID-19-positive (TN) subjects were assessed. RESULTS: A total of 37,950 COVID-19-positive subjects were reviewed and 4342 underwent NI. NI+ incidence in subjects with NI was 10.1% (442/4342) including 7.9% (294/3701) in the United States and 22.8% (148/647) in Europe. NI+ incidence in TN was 1.16% (442/37,950). In NI (4342), incidence of ischemic stroke was 6.4% followed by intracranial hemorrhage (ICH) (3.8%), encephalitis (0.5%), sinus venous thrombosis (0.2%), and acute disseminated encephalomyelitis (ADEM) (0.2%). White matter involvement was seen in 57% of NI+. Hypertension was the most common comorbidity (54%) before cardiac disease (28.8%) and diabetes mellitus (27.7%). Cardiac disease (p < .025), diabetes (p < .014), and chronic kidney disease (p < .012) were more common in the United States. CONCLUSION: This multicenter, multinational study investigated the incidence and spectrum of NI+ in 37,950 hospitalized adult COVID-19 subjects including regional differences in incidences of NI+, associated comorbidities, and other demographics. NI+ incidence in TN was 1.16% including 0.95% in the United States and 2.09% in Europe. ICH, encephalitis, and ADEM were common in Europe, while ischemic strokes were more common in the United States. In this cohort, incidence and distribution of NI+ helped characterize the neurological complications of COVID-19.


Subject(s)
COVID-19 , Encephalitis , Encephalomyelitis, Acute Disseminated , Heart Diseases , Ischemic Stroke , Adult , Humans , United States/epidemiology , COVID-19/diagnostic imaging , COVID-19/epidemiology , Retrospective Studies , Neuroimaging/methods , Intracranial Hemorrhages , Europe/epidemiology
2.
Antibiotics (Basel) ; 12(5)2023 May 04.
Article in English | MEDLINE | ID: mdl-37237750

ABSTRACT

The effect of systemic antibiotics on the microbial profile of extracrevicular sites after periodontal treatment is currently the subject of research. This study evaluated the microbiological effects on different oral cavity sites of scaling and root planing (SRP) combined with antimicrobial chemical control in the treatment of periodontitis. Sixty subjects were randomly assigned to receive SRP alone or combined with metronidazole (MTZ) + amoxicillin (AMX) for 14 days, with or without chlorhexidine mouth rinse (CHX) for 60 days. Microbiological samples were evaluated by checkerboard DNA-DNA hybridization until 180 days post therapy. The adjunctive use of antibiotics plus CHX significantly reduced the mean proportions of red complex species from subgingival biofilm and saliva (p < 0.05). Furthermore, the analysis of all intraoral niches showed a significantly lower mean proportion of the red complex species in the same group. In conclusion, the concomitant use of antimicrobial chemical control (systemic and local) demonstrated a beneficial effect on the composition of the oral microbiota.

3.
Complement Ther Clin Pract ; 51: 101732, 2023 May.
Article in English | MEDLINE | ID: mdl-36708650

ABSTRACT

BACKGROUND AND AIMS: Several studies have been performed in vitro and in animals showing that propolis (a resin made by bees) has excellent anti-inflammatory properties, but no study has been performed in patients with chronic kidney disease (CKD) on hemodialysis (HD). The present study aimed to evaluate the effects of propolis supplementation on inflammatory markers in patients with CKD on HD. METHODS: This is a longitudinal, double-blind, placebo-controlled trial with patients randomized into two groups: propolis (4 capsules of 100 mg/day containing concentrated and standardized dry EPP-AF® green propolis extract) or placebo (4 capsules of 100 mg/day containing microcrystalline cellulose, magnesium stearate and colloidal silicon dioxide) for two months. Routine parameters were analyzed using commercial kits. The plasma levels of inflammatory cytokines were evaluated by flow luminometry. RESULTS: Forty-one patients completed the follow-up, 21 patients in the propolis group (45 ± 12 years, 13 women, BMI, 22.8 ± 3.7 kg/m2) and 20 in the placebo group (45.5 ± 14 years, 13 women, BMI, 24.8 ± 6.8 kg/m2). The obtained data revealed that the intervention with propolis significantly reduced the serum levels of tumour necrosis factor α (TNFα) (p = 0.009) as well as had the tendency to reduce the levels of macrophage inflammatory protein-1ß (MIP-1ß) (p = 0.07). There were no significant differences in the placebo group. CONCLUSION: Short-term EPP-AF® propolis dry extract 400 mg/day supplementation seems to mitigate inflammation, reducing the plasma levels of TNFα and MIP-1ß in patients with CKD on HD. This study was registered at clinicaltrials.gov (NCT04411758).


Subject(s)
Propolis , Renal Insufficiency, Chronic , Humans , Female , Propolis/pharmacology , Propolis/therapeutic use , Tumor Necrosis Factor-alpha , Chemokine CCL4/therapeutic use , Inflammation/drug therapy , Renal Dialysis , Renal Insufficiency, Chronic/drug therapy , Double-Blind Method
4.
Microorganisms ; 10(11)2022 Oct 31.
Article in English | MEDLINE | ID: mdl-36363764

ABSTRACT

The oral cavity harbors hundreds of microorganisms that may be uncontrolled and provoke several diseases. In this sense, periodontitis is a complex multifactorial disease with an essential microbial component in its etiology. Periodontal treatment involves mechanical control of the supra- and subgingival biofilm, but not all patients respond predictably to treatment. In this way, the biofilm chemical control helps in the reduction of periodontal pathogens during treatment or in the delay of bacterial re-colonization after scaling and root planning. Several products have been studied as adjunctive therapy and have shown promising results. Therefore, the present article reviews the biological effects of propolis, aloe vera, green tea, cranberry, calendula, myrrha and salvia that may support their use in the control of subgingival biofilm in patients with periodontitis. All the natural products cited above showed exciting results against microorganisms related to oral diseases, mainly periodontitis. These substances also have anti-inflammatory and antioxidant activities. The natural agents propolis, aloe vera, green tea, cranberry, calendula, myrrha and salvia demonstrated potential to be used as oral hygiene products, based on their antimicrobial and anti-inflammatory actions.

5.
Epileptic Disord ; 24(6): 994-1019, 2022 12 01.
Article in English | MEDLINE | ID: mdl-36219093

ABSTRACT

This educational review article aims to provide information on the central nervous system (CNS) infectious and parasitic diseases that frequently cause seizures and acquired epilepsy in the developing world. We explain the difficulties in defining acute symptomatic seizures, which are common in patients with meningitis, viral encephalitis, malaria, and neurocysticercosis, most of which are associated with increased mortality and morbidity, including subsequent epilepsy. Geographic location determines the common causes of infectious and parasitic diseases in a particular region. Management issues encompass prompt treatment of acute symptomatic seizures and the underlying CNS infection, correction of associated predisposing factors, and decisions regarding the appropriate choice and duration of antiseizure therapy. Although healthcare provider education, to recognize and diagnose seizures and epilepsy related to these diseases, is a feasible objective to save lives, prevention of CNS infections and infestations is the only definitive way forward to reduce the burden of epilepsy in developing countries.


Subject(s)
Communicable Diseases , Encephalitis, Viral , Epilepsy , Neurocysticercosis , Communicable Diseases/complications , Encephalitis, Viral/complications , Epilepsy/complications , Epilepsy/etiology , Humans , Neurocysticercosis/complications , Neurocysticercosis/epidemiology , Seizures/complications , Seizures/etiology
6.
Adv Exp Med Biol ; 1373: 159-174, 2022.
Article in English | MEDLINE | ID: mdl-35612797

ABSTRACT

The development of oral biofilm models has been extremely important to study the specific role of most microbial species at the early stages of periodontitis. The current knowledge on monospecies or multispecies biofilms originates mainly from the observation of in vitro dynamic or static biofilm model systems, which were engineered to mimic clinical oral conditions. In the last few decades, mounting evidence has confirmed that biofilms are the major form of bacterial lifestyle, and more importantly, that microorganisms dwelling in sessile mixed-species aggregates display completely different phenotypes and physiological characteristics than when living in planktonic pure cultures. Interspecies interactions within these communities, mediated by chemical communication systems, have been shown to affect biofilm physiology and increase antimicrobial resistance by up to 1000 fold. These aspects reinforce the importance of developing multispecies biofilm models to better understand and control biofilms. Literature reports demonstrate that while monospecies models are still most commonly used in caries research, authors have used different multispecies models to study periodontal diseases. Periodontitis is a polymicrobial biofilm-dependent disease mainly associated with Porphyromonas gingivalis, Tannerella forsythia, and Treponema denticola. Interestingly, these species hardly adhere to substrates commonly used for biofilm formation, which makes multispecies models essential for an accurate analysis of periodontitis-related biofilms. The multispecies models currently available are generally composed of 6-10 species, but a more recent 34-species model was developed to better examine the dynamics within oral biofilms. The complexity of such polymicrobial biofilm models mimics more consistently the oral microbiome and different aspects of the oral environment. Collectively, the evidence on multispecies biofilm models described herein may support future studies on the use of antimicrobials for biofilm control as well as provide research opportunities to expand the current knowledge on interspecies interactions. The present manuscript reviews the most recent updates on in vitro biofilm model systems for periodontitis.


Subject(s)
Periodontitis , Treponema denticola , Biofilms , Humans , Plankton , Porphyromonas gingivalis/genetics , Treponema denticola/genetics
7.
Front Integr Neurosci ; 15: 747237, 2021.
Article in English | MEDLINE | ID: mdl-34916913

ABSTRACT

Depression is the most frequent psychiatric comorbidity seen in mesial temporal lobe epilepsy (MTLE) patients with hippocampal sclerosis (HS). Moreover, the HS is the most frequent pathological hallmark in MTLE-HS. Although there is a well-documented hippocampal volumetric reduction in imaging studies of patients with major depressive disorder, in epilepsy with comorbid depression, the true role of the hippocampus is not entirely understood. This study aimed to verify if patients with unilateral MTLE-HS and the co-occurrence of depression have differences in neuronal density of the hippocampal sectors CA1-CA4. For this purpose, we used a histopathological approach. This was a pioneering study with patients having both clinical disorders. However, we found no difference in hippocampal neuronal density when depression co-occurs in patients with epilepsy. In this series, CA1 had the lowest counting in both groups, and HS ILAE Type 1 was the most prevalent. More studies using histological assessments are needed to clarify the physiopathology of depression in MTLE-HS.

8.
Rev Bras Ortop (Sao Paulo) ; 56(6): 813-818, 2021 Dec.
Article in English | MEDLINE | ID: mdl-34900113

ABSTRACT

Recurrent stress fractures rarely affect the same athlete. We present the case of a female triathlete who suffered multiple stress fractures in both tibias, the right fibula, and the left femoral neck. Conservative treatment was instituted in all episodes, with rest, reduced training load, and physical therapy rehabilitation. The relative energy deficiency in sport syndrome, along with an eating disorder, training overload, and osteopenia, was identified as a risk factor. Although rare, multiple stress fractures can occur in female triathletes. These patients must be screened for risk factors associated with biomechanics, nutrition, and training to develop an effective prevention and treatment program.

9.
Rev. bras. ortop ; 56(6): 813-818, Nov.-Dec. 2021. graf
Article in English | LILACS | ID: biblio-1357147

ABSTRACT

Abstract Recurrent stress fractures rarely affect the same athlete. We present the case of a female triathlete who suffered multiple stress fractures in both tibias, the right fibula, and the left femoral neck. Conservative treatment was instituted in all episodes, with rest, reduced training load, and physical therapy rehabilitation. The relative energy deficiency in sport syndrome, along with an eating disorder, training overload, and osteopenia, was identified as a risk factor. Although rare, multiple stress fractures can occur in female triathletes. These patients must be screened for risk factors associated with biomechanics, nutrition, and training to develop an effective prevention and treatment program.


Resumo Fraturas por estresse recorrentes num mesmo atleta são raras. Apresentamos o caso de uma triatleta que sofreu múltiplas fraturas por estresse na tíbia bilateral, na fíbula direita e no colo femoral esquerdo. O tratamento conservador foi instituído em todos os episódios, com repouso, redução da carga de treino e reabilitação fisioterápica. Foi identificada como fator de risco a síndrome da deficiência energética relativa no esporte, com distúrbio alimentar, sobrecarga de treino e osteopenia. Mesmo que seja raro, múltiplas fraturas por estresse podem ocorrer em mulheres triatletas, nas quais é importante avaliar os fatores de risco associados à biomecânica, nutrição e ao treinamento para arquitetar um programa de prevenção e tratamento efetivos.


Subject(s)
Humans , Female , Adult , Tibia/injuries , Fractures, Stress , Risk Factors , Physical Therapy Modalities , Lower Extremity , Female Athlete Triad Syndrome , Athletes
10.
Psychiatry Res Neuroimaging ; 311: 111281, 2021 05 30.
Article in English | MEDLINE | ID: mdl-33836383

ABSTRACT

Depression is the most frequent psychiatric comorbidity in patients with mesial temporal lobe epilepsy (MTLE) and hippocampal sclerosis (HS). This study aimed to confirm whether patients with comorbid depression have different volumetric patterns on magnetic resonance imaging, analysing the influence of HS sides. Psychiatrists conducted semi-structured interviews with 75 patients, who were divided into non-depression group (NDG, n = 52) and depression group (DG, n = 23), and compared with 98 controls. The FreeSurfer software was used in the volumetric analysis of the estimated total intracranial volume (eTIV), bilateral cortical and subcortical regions of interest (ROIs), and for presence of left (L-, n = 41) or right (R-, n = 34) MTLE-HS. Twenty-three (30.7%) patients had depression, of whom 14 (34.1%) had l-MTLE-HS and 9 (26.5%) had R-MTLE-HS. No difference was observed between DG and NDG vs. controls in terms of eTIV and cortical ROIs, regardless of the severity of depression. In patients with l-MTLE-HS, the eTIV in the DG was reduced in comparison with that in the NDG and control group, with a small effect size. Hippocampal reduction occurred ipsilateral to HS in the l-MTLE-HS and R-MTLE-HS subgroups when DG and NDG were compared with controls, as expected according to Enhancing Neuro Imaging Genetics through Meta-Analysis (2018).


Subject(s)
Epilepsy, Temporal Lobe , Depression/diagnostic imaging , Depression/epidemiology , Epilepsy, Temporal Lobe/complications , Epilepsy, Temporal Lobe/diagnostic imaging , Epilepsy, Temporal Lobe/epidemiology , Hippocampus/diagnostic imaging , Hippocampus/pathology , Humans , Magnetic Resonance Imaging , Sclerosis/diagnostic imaging , Sclerosis/epidemiology , Sclerosis/pathology
11.
Arch Oral Biol ; 120: 104957, 2020 Dec.
Article in English | MEDLINE | ID: mdl-33129128

ABSTRACT

OBJECTIVE: The aims of this study were: 1) to compare the levels of cytokines between healthy and diseased sites, in patients with untreated periodontitis; 2) to correlate cytokine levels with each other and with key periodontal pathogens, in healthy and diseased sites. METHODS: Paired gingival crevicular fluid (GCF) samples were obtained from two healthy (probing depth (PD) and clinical attachment level (CAL) ≤3 mm without bleeding) and two diseased sites (PD and CAL ≥5 mm with bleeding on probing [BoP]) of patients with generalized stage III/IV grade B/C periodontitis. GCF levels of eighteen cytokines and subgingival levels of seven periodontal pathogens were assessed by multiplex immunoassay and qPCR, respectively. RESULTS: A total of 112 subjects and 448 GCF samples were analyzed. The GCF levels of GM-CSF, IL-17, IL-1ß, IL-2, IL-21, IL-23 and TGF-ß were significantly higher in the diseased than in the healthy sites (p < 0.05). Levels of IL-8 and MIP-1α were significantly higher in the healthy than in the diseased sites (p < 0.05). In the healthy sites, IL-8 and MIP-1α formed an independent cluster of cytokines and, MIP-1α positively correlated with Porphyromonas gingivalis (p < 0.05). In deep sites, smoking negatively associated with GM-CSF, IL-10, IL-17, IL-23, IL-5, IL-6, IL-7, IL-8 and MIP-1α levels (p < 0.05). CONCLUSIONS: Diseased sites exhibited increased levels of T helper 17-related cytokines and TGF-ß while healthy sites presented increased levels of the chemokines, IL-8 and MIP-1α. Patients with periodontitis may not only have inflammation in diseased deep sites, but also present significant hidden subclinical inflammation in their shallow clinically healthy sites.


Subject(s)
Chemokines/analysis , Cytokines/analysis , Gingival Crevicular Fluid/chemistry , Periodontitis/diagnosis , Humans , Porphyromonas gingivalis
12.
Seizure ; 81: 96-103, 2020 Oct.
Article in English | MEDLINE | ID: mdl-32771825

ABSTRACT

PURPOSE: To evaluate the neuropsychological findings related to the presence of pre-surgical comorbid depression in Latin-American patients with mesial temporal lobe epilepsy (MTLE) and unilateral hippocampal sclerosis (HS). METHOD: Patients with drug-resistant MTLE and unilateral, left (L-) or right (R-) HS were studied. To diagnose depression, psychiatrists with expertise in epilepsy applied a semi-structured interview based on DSM. The depression group (DG) included patients with a psychiatric diagnosis in addition to a Beck Depression Inventory (BDI) score >16 points, and the non-depression group (NDG) included those without this diagnosis and with a BDI score ≤16. We analysed two clusters of neuropsychological tests, which evaluated memory (Complex Rey Figure III, Logical Memory II and RAVLT VII) and attention plus executive functions (Stroop I/II/III and Trail Making A/B). Moreover, we calculated the z-scores (Zs) using a local control group. The DG was compared to the NDG, independently and according to the HS side, using non-parametrical analyses. Due to the multivariate analysis, the p-value was corrected by applyingpost hoc Bonferroni adjustment. RESULTS: We analysed 65 patients. The NDG included 51 (78.4 %) patients, and the DG included 14 (21.5 %) patients. Pre-surgical comorbid depression occurred in eight patients with L- (n = 29) and in six patients with R-MTLE-HS (n = 36). All of these groups had similar gender, age, IQs, and years of schooling. Compared to the healthy subjects, the L-MTLE-HS patients had lower Zs in verbal episodic memory tests [Logical Memory II (p < 0.001), and RAVLT VII (p < 0.001)], and the R-MTLE-HS patients had lower scores in visual episodic memory [Complex Rey Figure III (p < 0.001)]. In the analysis of the DGvs. NDG, there were no differences in the clusters of tests of memory or in those of attention and executive functions. Moreover, when we analysed the patients according to HS side, no neuropsychological difference was observed in the DG and NDG in terms of L- and R-MTLE-HS. CONCLUSIONS: The patients with MTLE and unilateral HS in this study showed no differences in memory, attention and executive functions in relation to the presence of pre-surgical comorbid depression and independently of HS side. In this series from Latin-America, this psychiatric comorbidity did not affect cognition more than epilepsy alone.


Subject(s)
Epilepsy, Temporal Lobe , Depression/epidemiology , Epilepsy, Temporal Lobe/complications , Epilepsy, Temporal Lobe/epidemiology , Epilepsy, Temporal Lobe/pathology , Hippocampus/pathology , Humans , Magnetic Resonance Imaging , Neuropsychological Tests , Sclerosis/epidemiology , Sclerosis/pathology , United States
13.
Epileptic Disord ; 22(4): 506-510, 2020 Aug 01.
Article in English | MEDLINE | ID: mdl-32723704

ABSTRACT

Neurocysticercosis is a neglected and usually poverty-related disease of high public importance. The mechanisms by which the calcified lesions cause epilepsy are not known, but have been attributed to residual perilesional gliosis or an inflammatory process. This case shows that an inflammatory response to a calcified granuloma may be associated with the development of epilepsy. The increase in glutamate and kinin B1 (pro-epileptogenic) receptors added by reduced expression of kinin B2 (anti-epileptogenic) receptors may explain the chronic epileptogenesis associated with the lesion, corroborating the hypothesis of inflammatory mechanisms involved in the pathophysiology of epilepsy in these patients.


Subject(s)
Drug Resistant Epilepsy , Neurocysticercosis , Biomarkers , Child , Drug Resistant Epilepsy/diagnosis , Drug Resistant Epilepsy/etiology , Drug Resistant Epilepsy/immunology , Electroencephalography , Female , Humans , Immunohistochemistry , Magnetic Resonance Imaging , Neurocysticercosis/complications , Neurocysticercosis/diagnosis , Neurocysticercosis/immunology , Neurocysticercosis/pathology
14.
Dement Neuropsychol ; 11(2): 209-212, 2017.
Article in English | MEDLINE | ID: mdl-29213514

ABSTRACT

Although catatonia is a well-known psychiatric syndrome, there are many possible systemic and neurological etiologies. The aim of this case report was to present a case of a patient with cerebral venous sinus thrombosis and infarction in which catatonia was the clinical manifestation of a possible nonconvulsive status epilepticus. To our knowledge, only one such case has been reported in the literature, which had a simplified diagnostic investigation. It is important to correctly recognize the organic cause underlying catatonia in order to treat the patient as soon as possible thereby improving outcome. Therefore, physicians need to update their knowledge on catatonia, recognizing that it can be part of a psychiatric or neurologic condition.


Embora a catatonia seja uma síndrome psiquiátrica bem conhecida, existem várias etiologias possíveis, tanto sistêmicas quanto neurológicas. O objetivo deste relato de caso é apresentar um quadro de trombose venosa central com infarto venoso em que a catatonia foi a manifestação clínica de um possível status não convulsivo. Na concepção dos autores, apenas um caso é encontrado na literatura, porém com uma propedêutica simplificada. É importante o correto reconhecimento das causas orgânicas que podem estar causando a catatonia para que sejam corrigidas assim que possível, melhorando o prognóstico do paciente. Além disso, os médicos precisam atualizar seus conhecimentos sobre a catatonia, uma vez que ela pode ser parte tanto de uma condição psiquiátrica quanto neurológica.

15.
Dement. neuropsychol ; 11(2): 209-212, Apr.-June 2017. graf
Article in English | LILACS | ID: biblio-891001

ABSTRACT

ABSTRACT Although catatonia is a well-known psychiatric syndrome, there are many possible systemic and neurological etiologies. The aim of this case report was to present a case of a patient with cerebral venous sinus thrombosis and infarction in which catatonia was the clinical manifestation of a possible nonconvulsive status epilepticus. To our knowledge, only one such case has been reported in the literature, which had a simplified diagnostic investigation. It is important to correctly recognize the organic cause underlying catatonia in order to treat the patient as soon as possible thereby improving outcome. Therefore, physicians need to update their knowledge on catatonia, recognizing that it can be part of a psychiatric or neurologic condition.


RESUMO Embora a catatonia seja uma síndrome psiquiátrica bem conhecida, existem várias etiologias possíveis, tanto sistêmicas quanto neurológicas. O objetivo deste relato de caso é apresentar um quadro de trombose venosa central com infarto venoso em que a catatonia foi a manifestação clínica de um possível status não convulsivo. Na concepção dos autores, apenas um caso é encontrado na literatura, porém com uma propedêutica simplificada. É importante o correto reconhecimento das causas orgânicas que podem estar causando a catatonia para que sejam corrigidas assim que possível, melhorando o prognóstico do paciente. Além disso, os médicos precisam atualizar seus conhecimentos sobre a catatonia, uma vez que ela pode ser parte tanto de uma condição psiquiátrica quanto neurológica.


Subject(s)
Humans , Sinus Thrombosis, Intracranial , Status Epilepticus , Catatonia , Brain Infarction
16.
Arch Microbiol ; 198(5): 445-58, 2016 Jul.
Article in English | MEDLINE | ID: mdl-26914247

ABSTRACT

Gluconacetobacter diazotrophicus is a nitrogen-fixing, endophytic bacterium that has the potential to promote plant growth and increase yield. Genetically modified strains might get more benefits to host plants, including through expression of useful proteins, such as Cry toxins from B. thuringiensis, or enzymes involved in phytohormone production, proteins with antagonistic activity for phytopathogens, or that improve nutrient utilization by the plant. For that, expression systems for G. diazotrophicus are needed, which requires active promoters fused to foreign (or innate) genes. This article describes the construction of a G. diazotrophicus PAL5 promoter library using a promoter-less lacZ-bearing vector, and the identification of six active promoters through ß-galactosidase activity assays, sequencing and localization in the bacterial genome. The characterized promoters, which are located on distinct regions of the bacterial genome and encoding either sense or antisense transcripts, present variable expression strengths and might be used in the future for expressing useful proteins.


Subject(s)
Genetic Techniques , Genome, Bacterial/genetics , Gluconacetobacter/genetics , Plasmids/genetics , Promoter Regions, Genetic/genetics , Gene Library , Plant Growth Regulators/metabolism , Plants/microbiology , beta-Galactosidase/metabolism
17.
Dement. neuropsychol ; 9(2): 189-195, Apr-Jun/2015. tab, graf
Article in English | LILACS | ID: lil-751394

ABSTRACT

Autoimmune limbic encephalitis (ALE) associated with systemic lupus erythematosus (SLE) is a rare entity with few reports in the literature to date. In general, ALE associated with SLE has a satisfactory response to immunosuppressive treatment (RIT), but the pathogenesis of this association is poorly understood and may include an autoimmunity component. We report a case study describing the diagnosis and management of limbic encephalitis in a patient with active Systemic Lupus Erythematosus disease (SLE) and past medical history of cancer (endometrial adenocarcinoma in 2004 and papillary urothelial carcinoma in 2011 with curative treatment), followed over a one-year period. We discuss the possible association between limbic encephalitis and all past neoplastic and immune-mediated conditions of this patient. In this particularly case, autoimmunity was the most relevant factor associated with limbic encephalitis given negative neoplastic screening. Moreover, a good response was observed to immunotherapy, not seen with paraneoplastic limbic encephalitis, which is associated with poor response. In this case, the association of ALE with SLE is possible, since laboratory testing disclosed lupic activity and the patient had involvement of other systems (such as hematologic) during the period. However, the presence of other surface membrane antibodies are possible in the search for alternative etiologies.


Encefalite Límbica Autoimune (EL) associada a lúpus eritematoso sistêmico (LES) é uma entidade rara, com poucos relatos na literatura até o momento. Em geral, EL associada com LES tem uma resposta satisfatória ao tratamento imunossupressor, mas a patogênese desta associação é pouco compreendida e pode incluir um componente de autoimunidade. Descrevemos em um estudo de caso o diagnóstico e o tratamento empregado na encefalite límbica ocorrida no contexto de uma paciente com LES ativo e história pregressa de doenças neoplásicas (adenocarcinoma endometrial em 2004 e carcinoma papilar urotelial em 2011 ambos com o tratamento curativo), a qual foi seguida durante um ano. Discutimos uma possível associação de encefalite límbica e todos os antecedentes neoplásicos e imunomediados desta paciente. Neste caso em particular, a autoimunidade é o fator mais relevante relacionado com a encefalite límbica devido a uma triagem neoplásica negativa. Além disso, houve uma grande resposta com a imunossupressão, o que não é visto na encefalite límbica paraneoplásica, mais relacionada com uma má resposta. Neste caso, a associação de EL com LES é possível, uma vez que testes laboratoriais confirmaram a atividade lúpica, bem como a paciente apresentava envolvimento de outros sistemas (como hematológico) neste interim. No entanto, a presença de outros anticorpos de superfície da membrana é possível em busca de diferentes etiologias.


Subject(s)
Humans , Limbic Encephalitis , Lupus Erythematosus, Systemic , Neoplasms
19.
Epilepsy Behav ; 43: 74-6, 2015 Feb.
Article in English | MEDLINE | ID: mdl-25561381

ABSTRACT

PURPOSE OF THE STUDY: The aims of this study were to determine the percentage of women with epilepsy (WWE) taking folic acid (FA) in an outpatient epilepsy tertiary hospital at São Paulo, Brazil, and to identify the possible predictors of adherence. METHOD: Five hundred seventy-six medical records of patients followed in our service were reviewed. Sixty-six WWE using antiepileptic drugs with age between 16 and 52, sexually active but not in menopausal period, not pregnant, and not sterilized or with vasectomized partners underwent direct interviews with a prestructured questionnaire. Logistic regression with clinical and demographic variables using a stepwise method was performed to identify predictable variables of folate use. RESULTS: We found 42.40% of FA intake. Hormonal contraceptive method use was an independent variable negatively associated with adherence to folate. Additionally, educational level was an independent variable positively associated with adherence to folate in WWE above 35years of age. CONCLUSION: We found low folate adherence. Improved planning pre-conception for WWE should improve rates of effective folate supplementation.


Subject(s)
Epilepsy/drug therapy , Folic Acid/therapeutic use , Medication Adherence/statistics & numerical data , Vitamins/therapeutic use , Adolescent , Adult , Anticonvulsants/adverse effects , Anticonvulsants/therapeutic use , Brazil/epidemiology , Contraceptives, Oral, Hormonal , Educational Status , Epilepsy/epidemiology , Female , Folic Acid/administration & dosage , Humans , Middle Aged , Risk Factors , Surveys and Questionnaires , Teratogens , Tertiary Care Centers , Vitamins/administration & dosage , Young Adult
20.
Cell Immunol ; 293(2): 87-94, 2015 Feb.
Article in English | MEDLINE | ID: mdl-25585346

ABSTRACT

Multiple sclerosis (MS) shows distinct clinical courses. Experimental autoimmune encephalomyelitis (EAE), a model to study multiple sclerosis, can be induced by different protocols, which show distinct cytokine and antibody production. The factors involved in this heterogeneity remain unclear. The relevance of MOG concentration in triggering a regulatory response in the chronic model of EAE is imprecise. The aim of this study was investigate if 100 or 300 µg of MOG(35-55) could induce different EAE profiles. Modifications in the concentration of MOG were able to change the patterns of chemokines, cytokines, percentage of cells, inflammatory infiltrate and the development of a regulatory response. However, these changes were unable to modify the intensity of response, which explains the chronic progression of the disease in both concentrations. The results presented in this study contribute to understanding the intricate mechanisms that trigger EAE and provide insights into the pathogenesis of various forms of MS.


Subject(s)
Brain/immunology , Encephalomyelitis, Autoimmune, Experimental/immunology , Inflammation/immunology , Myelin-Oligodendrocyte Glycoprotein/administration & dosage , Spinal Cord/immunology , Animals , Brain/pathology , Chemokines/analysis , Disease Models, Animal , Encephalomyelitis, Autoimmune, Experimental/pathology , Female , Flow Cytometry , Mice , Mice, Inbred C57BL , Spinal Cord/pathology , Statistics, Nonparametric
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