RESUMO
CRISPR with its cas genes is an adaptive immune system that protects prokaryotes against foreign genetic elements. The type III-A CRISPR-Cas system is rarely found in Staphylococcus aureus, and little is known about its function in S. aureus. Here, we describe the genome characteristics of the clinical methicillin-resistant S. aureus (MRSA) strain TZ0912, carrying a type III-A CRISPR-Cas system. Phylogenetic analysis of 35 reported CRISPR-Cas-positive S. aureus strains revealed that the CRISPR-Cas system is prevalent in CC8 clones (10/35) and is located in the staphylococcal cassette chromosome mec (SCCmec) V, which confers methicillin resistance. Plasmid transformation and phage infection assays reveal that the type III-A CRISPR-Cas system protects TZ0912 against foreign DNA with sequence homology to the spacers located in the CRISPR array. We observed that the CRISPR-Cas immune system could effectively protect MRSA against phage attacks in both liquid culture and solid medium. In accordance with previous reports, using RNA-seq analysis and plasmid transformation assays, we find that the crRNAs close to the leading sequence of the CRISPR array are more highly expressed and are more effective at directing plasmid elimination compared to the distant spacers. This study established a model for evaluating the efficiency of naive CRISPR-Cas system in MRSA against phage, which could contribute to future research on the function of CRISPR-Cas in clinical MRSA isolates and improve phage therapy against MRSA infections.
Assuntos
Sistemas CRISPR-Cas , Staphylococcus aureus Resistente à Meticilina/genética , Repetições Palindrômicas Curtas Agrupadas e Regularmente Espaçadas/genética , Staphylococcus aureus Resistente à Meticilina/isolamento & purificação , Staphylococcus aureus Resistente à Meticilina/virologiaRESUMO
A systematic review was conducted. So, electronic database including CINAHL, Embase, MEDLINE, Pubmed, Scopus and Cochrane-Central were explored in January 2017 and in October 2017. The aim of this systematic review is to identify, appraise and synthesize the best evidence for the effectiveness of programmes of positive mental health in adults. Mental health is regarded as an ideal functioning state of the human being, which emphasizes the relevance of promoting the person's qualities in the optimization of their potential. Mental health is not inert and definitive but a dynamic and variable state. Studies were reviewed and data extracted by two independent reviewers using Joanna Briggs Institute standardized critical appraisal and data extraction instruments. Six studies met the inclusion criteria for the analysis. However, a meta-analysis could not be performed. The results suggest that positive mental health programmes improve adults' mental condition, although there is neither evidence of content formalization nor of programme sessions criteria. The review findings indicate that interventions promoting positive mental health of young adults can be implemented effectively in community settings with various programmes and results.
Assuntos
Serviços de Saúde Mental/organização & administração , Adulto , Humanos , Serviços de Saúde Mental/normas , Qualidade da Assistência à SaúdeRESUMO
The relationship between cardiovascular autonomic neuropathy (CVAN) and oesophageal dysfunction in diabetes mellitus has not been well established because reports are contradictory. The aim of this study was to assess oesophageal function and its correlation with CVAN in type 1 diabetic patients without oesophageal symptoms. Forty-six type 1 diabetic patients without oesophageal symptoms (DG) and 34 healthy volunteers (CG) were studied. Both groups underwent CVAN tests and oesophageal manometry and pH-metry. Differences between groups regarding results of cardiovascular autonomic tests and oesophageal studies were statistically analysed. Compared with the CG, the DG group showed insufficient lower oesophageal sphincter (LOS) relaxation and a higher percentage of simultaneous waves (P < 0.01). Patients with CVAN (n = 22) showed a higher prevalence of pathological simultaneous contractions (>10%), and the prevalence of simultaneous waves related to the degree of autonomic neuropathy was: 9% of patients without CVAN, 7% of those suspected to have it and 50% of patients with CVAN (P < 0.001). Factors associated with the presence of pathological simultaneous waves (>10%) were the presence of CVAN and duration of diabetes (P < 0.05, logistic regression analysis). Increase in simultaneous waves and impaired relaxation of LOS are more frequent in diabetic patients with CVAN.
Assuntos
Doenças do Sistema Nervoso Autônomo/etiologia , Diabetes Mellitus Tipo 1/complicações , Neuropatias Diabéticas/etiologia , Transtornos da Motilidade Esofágica/etiologia , Adulto , Pressão Sanguínea , Sistema Cardiovascular/patologia , Sistema Cardiovascular/fisiopatologia , Complicações do Diabetes , Diabetes Mellitus Tipo 1/fisiopatologia , Feminino , Frequência Cardíaca , Humanos , Concentração de Íons de Hidrogênio , Masculino , ManometriaRESUMO
Resumo Contexto: O termo "saúde mental positiva" foi designado pela primeira vez por Marie Jahoda em 1958. Ele enquadra a promoção da saúde mental como algo importante na sociedade e no ciclo de vida dinâmico de seus membros. Objetivo: Explorar e identificar os componentes necessários para a criação de um programa modular de promoção da saúde mental positiva em adultos, baseado no Modelo Multifatorial de Teresa Lluch. Metodologia: Realizamos três reuniões de peritos de março a julho de 2018 com um total de 23 profissionais de enfermagem em Portugal. Os dados foram analisados tematicamente pelo método Framework. Usado o COREQ checklist. Resultados: Foram analisados quatro temas previamente identificados: a estrutura do programa, os critérios de inclusão dos participantes, a composição conceptual das sessões e a eficácia do programa. A construção teórica do programa baseou-se no Modelo Multifatorial de Saúde Mental Positiva de Teresa Lluch, composto por seis fatores: satisfação pessoal, atitude pró-social, autocontrolo, autonomia, resolução de problemas e auto-atualização e habilidades de relacionamento interpessoal. Conclusão: Este estudo permitiu identificar, com consenso, um conjunto de intervenções baseadas nos seis fatores do Modelo Multifatorial de Saúde Mental Positiva de Teresa Lluch que devem integrar um programa que promova a saúde mental positiva em adultos em diferentes cenários / contextos adequados às necessidades individuais de cada participante.
Abstract Context: The term 'positive mental health' was first designated by Marie Jahoda in 1958. It frames the promotion of mental health as something important in society and the dynamic life cycle of its members. Objective: To explore and identify the components needed for the creation of a modular program to promote positive mental health in adults, based on Teresa Lluch Multifactorial Model. Methods: We conducted three focus groups from March-July 2018 with a total of 23 nursing professionals in Portugal. The data was thematically analyzed using the Framework method. The COREQ checklist guided reporting. Results: Four previously identified topics were analyzed: the structure of the program, the inclusion criteria of participants, the conceptual composition of the sessions, and the effectiveness of the program. The theoretical construction of the program was based on Teresa Lluch Multifactorial Positive Mental Health Model, composed of six factors: personal satisfaction, prosocial attitude, self-control, autonomy, problem-solving and self-actualization, and interpersonal relationship skills. Conclusion: This study allowed to identify, with consensus, a set of interventions based on the six factors of Teresa Lluch Multifactorial Positive Mental Health Model that should integrate a program that promotes positive mental health in adults in different settings/contexts suited for the individual needs of each participant.
RESUMO
OBJECTIVE: To study the effect of thyroid hormone replacement on total cholesterol, low-density lipoprotein cholesterol, triglycerides, high-density lipoprotein cholesterol (HDL-C), apolipoprotein A-I and B-100, and lipoprotein(a) [Lp(a)] in subjects with hypothyroidism. MATERIAL AND METHODS: In 17 patients with clinical primary hypothyroidism, studies were done before and after thyroid hormone replacement therapy. Free thyroxine and thyrotropin were determined by chemiluminescent assay. Total cholesterol and triglycerides were measured by enzymatic methods, and HDL-C was measured after dextran sulfate-MgCl2 precipitation. Apolipoprotein A-I and B-100 were assayed by immunonephelometry. For measurement of Lp(a), we used a sequential sandwich enzyme-linked immunosorbent assay. RESULTS: After levothyroxine treatment, the mean concentration of thyrotropin decreased from 91.4 to 3.7 microIU/mL, and free thyroxine increased from 0.5 to 1.2 ng/ dL. Total cholesterol, triglycerides, HDL-C, low-density lipoprotein cholesterol, and apolipoprotein A-I and B-100 decreased after thyroid hormone replacement therapy. Lp(a) levels also decreased significantly (P<0.05) after treatment, from a mean of 33.4 to 25.6 mg/dL. CONCLUSION: Hypothyroidism is associated with an increase in total cholesterol, triglycerides, HDL-C, apolipoprotein A-I and B-100, and Lp(a). A reduction in lipid and lipoprotein levels after thyroid hormone replacement in our study cohort resulted in a less atherogenic profile.
Assuntos
Hipotireoidismo/sangue , Lipídeos/sangue , Tiroxina/uso terapêutico , Apolipoproteínas/sangue , Colesterol/sangue , Ensaio de Imunoadsorção Enzimática , Humanos , Hipotireoidismo/tratamento farmacológico , Lipoproteína(a)/sangue , Triglicerídeos/sangueRESUMO
Fourteen patients with familial hypercholesterolemia treated with lovastatin (40 mg/day) for three months were studied to find out whether the expected changes in plasma lipids are accompanied by modifications in the lipid composition of the erythrocyte membrane and whether these in turn induce changes in the rheological behavior of the red blood cell. Our results demonstrate the efficacy of lovastatin in reducing the plasma concentration of cholesterol and LDL cholesterol. The changes observed in the plasma lipids correlate with a significant decrease in the cholesterol/phospholipid ratio of the red blood cell membrane, from 1.19 +/- 0.19 in a basal situation to 0.92 +/- 0.23 (p < 0.01) at the end of treatment. These changes in the lipid composition of the cell are statistically related to a decrease in erythrocyte aggregability and an improvement in blood filterability, which means beneficial change in the patients' hemorheological situation.
Assuntos
Anticolesterolemiantes/farmacologia , Colesterol/sangue , Membrana Eritrocítica/química , Hiperlipoproteinemia Tipo II/tratamento farmacológico , Lovastatina/farmacologia , Lipídeos de Membrana/sangue , Fosfolipídeos/sangue , Adulto , Anticolesterolemiantes/uso terapêutico , Apolipoproteína A-I/análise , Apolipoproteínas B/análise , Colesterol na Dieta/administração & dosagem , Terapia Combinada , Dieta com Restrição de Gorduras , Deformação Eritrocítica , Feminino , Fibrinogênio/análise , Hemorreologia , Humanos , Hiperlipoproteinemia Tipo II/sangue , Hiperlipoproteinemia Tipo II/dietoterapia , Lovastatina/uso terapêutico , Masculino , Pessoa de Meia-IdadeRESUMO
One hundred Type 1 diabetic patients (54 men, 46 women) mean age 28.9+/-8.4 years, were selected from among individuals referred to our hospital, with no previous diagnosis of diabetic chronic complications including diabetic neuropathy. After clinical and physical examinations, subjects were divided into two groups: with (n = 37) and without (n = 63) peripheral neuropathy. The percentage of subjects with cardiovascular autonomic neuropathy (AN), diagnosed by positive results to at least two of the five cardiovascular tests (Valsalva ratio, EI ratio, 30/15 ratio, blood-pressure response to standing up and handgrip test), was 40%: 72.9% in the group with peripheral neuropathy and 20.6% in the group without peripheral neuropathy (P < 0.0001). The prevalence of cardiovascular AN was related to the duration of the diabetes (P < 0.0001) and to HbA1c (P < 0.02). The presence of microalbuminuria and the existence of retinopathy were higher (P < 0.01 ) in group 1 (with peripheral neuropathy). Logistic regression analysis showed that only the presence of higher excretion of albumin is independently related to the presence of peripheral neuropathy. In conclusion, cardiovascular AN is frequent in Type 1 diabetes; furthermore, prevalence increases with the existence of peripheral neuropathy and with duration of the diabetes.
Assuntos
Doenças do Sistema Nervoso Autônomo/fisiopatologia , Diabetes Mellitus Tipo 1/fisiopatologia , Neuropatias Diabéticas/fisiopatologia , Doenças do Sistema Nervoso Periférico/fisiopatologia , Adolescente , Adulto , Albuminúria/fisiopatologia , Sistema Nervoso Autônomo/fisiopatologia , Pressão Sanguínea , Neuropatias Diabéticas/classificação , Retinopatia Diabética/fisiopatologia , Feminino , Força da Mão , Humanos , Masculino , Pessoa de Meia-Idade , Nervos Periféricos/fisiopatologia , Postura , Manobra de ValsalvaRESUMO
Eighteen patients with familial hypercholesterolemia treated with lovastatin (40 mg/day) for three months were studied to find out whether the drug induces modifications in the lipid composition of the erythrocyte membrane and whether these induce changes in the rheological behaviour of the red blood cell. Our results show that the changes observed in plasma lipids correlate with a significant decrease in the cholesterol/phospholipid ratio of the red blood cell membrane. These changes in the lipid composition of the cell are statistically related to a decrease in the erythrocyte aggregability and an improvement in blood filterability probably due to an increase in the red blood cell deformability.
Assuntos
Anticolesterolemiantes/uso terapêutico , Inibidores Enzimáticos/uso terapêutico , Agregação Eritrocítica/efeitos dos fármacos , Deformação Eritrocítica/efeitos dos fármacos , Membrana Eritrocítica/efeitos dos fármacos , Hemorreologia/efeitos dos fármacos , Inibidores de Hidroximetilglutaril-CoA Redutases , Hiperlipoproteinemia Tipo II/tratamento farmacológico , Lovastatina/uso terapêutico , Lipídeos de Membrana/sangue , Adulto , Anticolesterolemiantes/farmacologia , Apolipoproteína A-I/sangue , Apolipoproteínas B/sangue , Viscosidade Sanguínea/efeitos dos fármacos , Colesterol/sangue , Colesterol na Dieta/administração & dosagem , LDL-Colesterol/sangue , Terapia Combinada , Inibidores Enzimáticos/farmacologia , Membrana Eritrocítica/química , Feminino , Fibrinogênio/análise , Humanos , Hiperlipoproteinemia Tipo II/sangue , Hiperlipoproteinemia Tipo II/dietoterapia , Lovastatina/farmacologia , Masculino , Pessoa de Meia-Idade , Fosfolipídeos/sangueRESUMO
BACKGROUND AND AIMS: Atherosclerosis is the most common cause of morbidity and mortality in type 2 diabetes mellitus. Hyperglycemia, dyslipoproteinemia, arterial hypertension and coagulation abnormalities are the most important cardiovascular risk factors. Hypertriglyceridemia and low high density lipoprotein-cholesterol (HDLc) seem to be related with insulin resistance. Fibric acid derivates (fibrates) are effective in the treatment of dyslipoproteinemia in diabetes. Our aim was to evaluate the efficacy and safety of ciprofibrate in improving dyslipoproteinemia and its effect on fibrinogen plasma concentrations, carbohydrate metabolism variations and insulin action. METHODS AND RESULTS: 13 subjects with type 2 diabetes mellitus were treated with diet and placebo for 4 weeks and then randomized to one of two treatments: ciprofibrate 100 mg or placebo for four weeks. After a four-week wash-out period they were crossed over as shown in Figure 1. Total cholesterol, triglycerides, low density lipoprotein-cholesterol (LDLc), very low density lipoprotein-cholesterol (VLDLc), HDLc, Apolipoprotein B100, fibrinogen, insulin and Lp(a) were measured. Insulin erythrocytes union was made by the Gambhir method. There was a 15% decrease in total cholesterol (p < 0.05) and 47% decrease in triglycerides (p < 0.01); similar changes were observed in VLDL-cholesterol and VLDL-triglycerides; 17% increase in HDL-cholesterol (p < 0.05). No significant differences were observed in LDL-cholesterol, apolipoprotein B100 and lipoprotein (a). Fibrinogen decreased 10% (p < 0.05). A non-significant 10% decrease in insulin secretion (area under curve) after oral glucose was observed with ciprofibrate. These findings indicate a decrease in receptor affinity. A non-significant decrease in insulin receptor number/cells was also observed. CONCLUSIONS: Ciprofibrate has a potent hypolipidemic effect, especially a decrease in triglycerides, VLDL and fibrinogen, and an increase in HDL-cholesterol, but does not influence glycemic control nor insulin action. Decreased insulin secretion may be due to peripheral use of glucose due to the drug's antilipolytic action.
Assuntos
Metabolismo dos Carboidratos , Ácido Clofíbrico/análogos & derivados , Diabetes Mellitus Tipo 2/sangue , Fibrinogênio/efeitos dos fármacos , Hipolipemiantes/farmacologia , Metabolismo dos Lipídeos , Adulto , Idoso , Apolipoproteínas B/sangue , Área Sob a Curva , Arteriosclerose/etiologia , Arteriosclerose/prevenção & controle , Glicemia/metabolismo , Colesterol/sangue , HDL-Colesterol/sangue , LDL-Colesterol/sangue , Ácido Clofíbrico/farmacologia , Ácido Clofíbrico/uso terapêutico , Estudos Cross-Over , Diabetes Mellitus Tipo 2/complicações , Método Duplo-Cego , Feminino , Ácidos Fíbricos , Fibrinogênio/metabolismo , Hemoglobinas Glicadas/metabolismo , Humanos , Hipolipemiantes/uso terapêutico , Lipoproteína(a)/sangue , Masculino , Pessoa de Meia-Idade , Triglicerídeos/sangueRESUMO
OBJECTIVE: Although abnormal gastroesophageal (GE) reflux is the most frequent alteration of the gastrointestinal tract, its prevalence in diabetes mellitus (DM) is not widely known. The objective of this study was to analyze both the presence of abnormal GE reflux in diabetic patients with no esophageal symptoms and the influence of cardiovascular autonomic neuropathy (CVAN) in the development of abnormal GE reflux. METHODS: Fifty insulin-dependent diabetic patients, averaging 29.2 +/- 9.0 yr of age, who had had diabetes for > 5 yr and showed no symptoms or history of gastroesophageal disease, were compared with a control group composed of 36 healthy volunteers (18 men, 18 women) whose average age was 35.9 +/- 10.1 yr. The cardiovascular autonomic nervous system was examined in the diabetics and control subjects who complied with inclusion criteria. Long-term (24-h) ambulatory esophageal pH monitoring was performed, as well as a manometric study of the lower esophageal sphincter. RESULTS: The parameters obtained from the monitoring showed significant differences (p < 0.01) between DM and control subjects. Abnormal GE reflux, defined as any percentage of time with esophageal pH < 4 exceeding 3.5% of total time (8.7 +/- 5.6%; range, 4.1-24.4%), was detected in 14 patients. Diabetic subjects were classified according to cardiovascular autonomic neuropathy tests (without CVAN [n = 19, 38%] and with abnormal CVAN tests [n = 31, 62%]). The pH monitoring parameters showed significant differences between these two groups (p < 0.05). CONCLUSIONS: A higher prevalence (28%) of abnormal GE reflux appeared among asymptomatic diabetic patients than among the general population. The presence of abnormal GE reflux in diabetic patients was associated with the existence of cardiovascular autonomic neuropathy (abnormal GE reflux = 38.7% in diabetic patients with abnormal CVAN tests vs 10.5% in diabetic patients without CVAN).