The rising importance of Triatoma rubrofasciata

The migration of invasive vector species has contributed to the worldwide extension of infectious diseases such as dengue (Aedes aegypti) and chikungunya (Aedes albopictus). It is probably a similar behaviour for certain vectors of Chagas disease which allowed it to become a continental burden in Latin America. One of them, Triatoma rubrofasciata has also been spreading throughout the tropical and subtropical world. Here, the recent and massive peridomestic presence of T. rubrofasciata in Vietnam cities is reported, and tentatively explained, highlighting the need for improved entomological surveillance.

Interleukin-10 rs1800896 and CXCR2 rs1126579 polymorphisms modulate the predisposition to septic shock

Despite major improvements in its treatment and diagnosis, sepsis is still a leading cause of death and admittance to the intensive care unit (ICU). Failure to identify patients at high risk of developing septic shock contributes to an increase in the sepsis burden and rapid molecular tests are currently the most promising avenue to aid in patient risk determination and therapeutic anticipation. The primary goal of this study was to evaluate the genetic susceptibility that affects sepsis outcome in 72 sepsis patients admitted to the ICU. Seven polymorphisms were genotyped in key inflammatory response genes in sepsis, including tumour necrosis factor-α,interlelukin (IL)-1β, IL-10,IL-8, Toll-like receptor 4, CXCR1and CXCR2. The primary finding showed that patients who were homozygous for the major A allele in IL-10rs1800896 had almost five times higher chance to develop septic shock compared to heterozygotes. Similarly, selected clinical features and CXCR2rs1126579 single nucleotide polymorphisms modulated septic shock susceptibility without affecting survival. These data support the hypothesis that molecular testing has clinical usefulness to improve sepsis prognostic models. Therefore, enrichment of the ICU portfolio by including these biomarkers will aid in the early identification of sepsis patients who may develop septic shock.

Using a single tablet daily to treat latent tuberculosis infection in Brazil: bioequivalence of two different isoniazid formulations (300 mg and 100 mg) demonstrated by a sensitive and rapid high-performance liquid chromatography-tandem mass spectrometry method in a randomised, crossover study

The recommended treatment for latent tuberculosis (TB) infection in adults is a daily dose of isoniazid (INH) 300 mg for six months. In Brazil, INH was formulated as 100 mg tablets. The treatment duration and the high pill burden compromised patient adherence to the treatment. The Brazilian National Programme for Tuberculosis requested a new 300 mg INH formulation. The aim of our study was to compare the bioavailability of the new INH 300 mg formulation and three 100 mg tablets of the reference formulation. We conducted a randomised, single dose, open label, two-phase crossover bioequivalence study in 28 healthy human volunteers. The 90% confidence interval for the INH maximum concentration of drug observed in plasma and area under the plasma concentration vs. time curve from time zero to the last measurable concentration “time t” was 89.61-115.92 and 94.82-119.44, respectively. The main limitation of our study was that neither adherence nor the safety profile of multiple doses was evaluated. To determine the level of INH in human plasma, we developed and validated a sensitive, simple and rapid high-performance liquid chromatography-tandem mass spectrometry method. Our results showed that the new formulation was bioequivalent to the 100 mg reference product. This finding supports the use of a single 300 mg tablet daily strategy to treat latent TB. This new formulation may increase patients’ adherence to the treatment and quality of life.

The demands of family caregivers of elderly individuals with dementia

The purpose of this cross-sectional observational study was to identify characteristics of caregivers of elderly people with dementia, types of care demands and to relate demands to the stage of dementia. The study was carried out in 2004 with 104 older adults and 90 caregivers in Ribeirão Preto, state of São Paulo. The OARS instrument was utilized and a questionnaire answered by caregivers. Among older adults, 66.3% were female, aged 75.5 years in average and 86.5% had caregivers. Eighty percent of the caregivers were women family members, aged 52.3 years in average. They spent 15.10 hours/day with care, without help. An important relationship was observed between caregiver's burden, physical and emotional effort and stage of dementia. Emotional overburden was higher at dementia early and late stages, this difference was statistically non-significant. Results reveal the urgent need to plan formal and informal support strategies to caregivers of Brazilian elderly people with dementia.

Influência do apoio social na qualidade de vida do cuidador familiar de pessoas com dependência

O objetivo deste estudo foi avaliar a qualidade de vida de cuidadores familiares de pessoas dependentes atendidas por equipes de Saúde da Família e a relação com o apoio social. Foram entrevistados 66 cuidadores, utilizando o WHOQOL-bref para avaliação da qualidade de vida, e Zarit Burden Interview para a sobrecarga. O domínio Relações Sociais do WHOQOL-bref obteve o segundo melhor escore. Na análise de regressão linear múltipla, cuidadores do sexo feminino com menores escores de sobrecarga e aqueles que recebiam ajuda de alguém para realizar o cuidado alcançaram os maiores escores. Da mesma forma, cuidadoras com companheiros apresentaram maior escore médio na avaliação global da qualidade de vida e saúde do que as sem companheiros. Os resultados fornecem indícios da influência da rede de apoio social na qualidade de vida e sobrecarga dos cuidadores familiares.

Perspectivas atuais sobre a sobrecarga do cuidador em saúde mental

Foi realizada uma revisão sistemática da literatura sobre sobrecarga de cuidadores em saúde mental. Os trabalhos foram selecionados na Biblioteca Virtual de Saúde (BVS), utilizando-se as palavras-chaves: sobrecarga do cuidador (caregiver burden). Os principais critérios para este estudo foram: artigos completos, publicados entre 2000 e 2010, nos idiomas português, inglês ou espanhol; indexados nas bases da BVS, que investigam a sobrecarga do cuidador em saúde mental, tendo cuidadores como assunto principal. Para análise foi considerado: o título, ano de publicação, objetivos, abordagem metodológica, instrumentos e principais resultados. A análise de 114 artigos na íntegra apontou como objetivos predominantes a sobrecarga entre os cuidadores informais e a validação de escalas psicométricas, destacando-se a Escala de Zarit. Alguns estudos apresentaram associação entre altos níveis de sobrecarga, ocorrência de sentimentos de culpa e sintomas depressivos. Em contrapartida indicaram intervenções psico-educacionais como positivas. Trata-se de uma temática com crescente interesse cientifico e necessidade de aprofundamento relacionado ao cuidador formal.

Cuidadores de indivíduos com lesão medular: sobrecarga do cuidado

Estudo seccional que teve como objetivos avaliar a sobrecarga do cuidado para cuidadores de indivíduos com Lesão Traumática da Medula Espinhal (LTME) e a sua associação com as variáveis sociodemográficas (sexo e idade), estado de saúde (enfermidades autorrelatadas) e características do cuidado (tempo de cuidado em anos e horas diárias de cuidado). Os dados foram coletados por consulta aos prontuários e entrevistas individuais no domicílio utilizando o instrumento Caregiver Burden Scale (CBScale). Os resultados apontaram que a maior sobrecarga ocorreu nos domínios: ambiente, decepção e tensão geral. Apresentar problema de saúde (para todos os domínios do CBScale) e despender mais horas por dia nos cuidados (no domínio decepção) representaram as variáveis associadas à sobrecarga. Estudos de natureza mais confirmatória do que exploratória entre as variáveis estudadas poderão utilizar a medida de sobrecarga obtida nesta população de cuidadores de indivíduos com LTME.