Effect of LPS on the Viability and Proliferation of Human Oral and Esophageal Cancer Cell Lines

The esophagus and mouth tumors are very frequent malignancies worldwide. Lipopolysaccharides (LPS) are capable of regulating gene expression of pro-inflammatory cytokines by binding to toll-like receptor 4 (TLR4). Recent studies show that LPS can increase the migration ability of human esophageal cancer cell line HKESC-2 by increasing its adhesion properties. However, the effect of LPS has not been tested on viability of human esophageal and oral cancer cells. This study aimed to determine the action of LPS on the cell proliferation and viability in OE19 (adenocarcinoma) and OE21 (squamous carcinoma) cell lines, representative of human esophageal cancer, and HN30 cell line, representative of human oral carcinoma. LPS was used as treatment to OE19 and OE21 cells, and PgLPS (Porphyromonasgingivalis lipopolysaccharide) to HN30 cells. Viability was assessed by MTT assay and proliferation by cell counting. TLR4 expression was evaluated by real-time PCR. LPS at higher concentrations decreased significantly cell viability in both cell lines, adenocarcinoma (OE19) and squamous esophageal carcinoma (OE21) at different times of treatment. In addition, both cell lines, OE19 and OE21, expressed TLR4 receptor. Taken together, our data demonstrated that LPS at high concentrations might contribute to tumor death, in agreement with previously data.

Consumo de nutrientes em idosos residentes em Porto Alegre (RS), Brasil: um estudo de base populacional / Consumption of nutrients among the elderly living in Porto Alegre in the State of Rio Grande do Sul, Brazil: a population-based study

Resumo Para descrever o perfil de consumo de nutrientes e verificar a sua associação com as variáveis sociodemográficas e de saúde, desenvolveu-se um estudo transversal, de base populacional em uma amostra aleatória de 427 idosos residentes em Porto Alegre, Brasil. O consumo alimentar foi avaliado através do Inquérito Recordatório de 24 Horas e Investigação da História Dietética. Dos idosos entrevistados, 70% eram mulheres; 48,5% possuíam entre 60 e 69 anos; 68,8% possuíam menos de 8 anos de escolaridade; 39,0%, renda familiar entre 2 e 5 salários mínimos; e 58,4% não praticava exercício físico. A hipertensão foi a doença mais prevalente, e 54,9% dos idosos estavam abaixo do peso. Os homens consumiam mais calorias, proteínas, fibras, minerais e vitaminas do que as mulheres. O consumo de carboidrato e cálcio aumentou conforme o avanço da idade, assim como diminuiu a ingestão de zinco. A prática de exercício físico elevou o consumo de calorias, magnésio, potássio e fósforo. Quanto maior a escolaridade, maior é o consumo de vitaminas B6 e B12; quanto maior a renda familiar, maior o consumo de vitamina B6 e ácido fólico. Os resultados demonstram que há deficiências nutricionais na alimentação diária da nossa população de idosos, principalmente entre as mulheres e os indivíduos acima de 80 anos.

Abstract A cross-sectional, population-based study was conducted on a random sample of 427 elderly individuals living in Porto Alegre, Brazil, to establish the nutrient consumption profile and verify its association with sociodemographic and health variables. Dietary intake was assessed using the 24-hour Food Recall Survey and the Dietetic Research Investigation technique. Seventy percent of the elderly respondents were women: 48.5% were between 60 and 69 years old; 68.8% had less than 8 years of schooling; 39% had a family income of between 2 and 5 minimum wages and 58.4% took no physical exercise. Hypertension was the most prevalent disease among the elderly and 54.9% were underweight. Men consumed more calories, protein, fiber, minerals and vitamins than women. Carbohydrate and calcium intake increases with advancing age, while zinc intake decreases. Physical exercise increased the intake of calories, magnesium, potassium and phosphorus. The higher the schooling the greater the intake of vitamins B6 and B12; the higher the family income, the greater the consumption of vitamin B6 and folic acid. The results show that there are nutritional deficiencies in the daily diet of the Brazilian elderly population, especially among women and individuals over 80 years of age.

Uso de anti-inflamatórios e analgésicos por uma população de idosos atendida na Estratégia Saúde da Família / Use of anti-inflammatory and analgesic drugs in an elderly population registered with a Family Health Program

ResumoEste estudo objetivou analisar a prevalência do uso de anti-inflamatórios e analgésicos em idosos da Estratégia Saúde da Família de Porto Alegre-RS, bem como investigar fatores associados: dados sociodemográficos e de saúde; uso contínuo ou se necessário da medicação; indicação médica ou automedicação. A coleta de dados ocorreu entre março de 2011 e dezembro de 2012. Os agentes de saúde comunitários aplicaram um questionário com dados sociodemográficos, de saúde e uso de medicamentos. Foram estudados os anti-inflamatórios não esteroidais, glicocorticoides, analgésicos não opioides e opioides de uso oral. Foram incluídos 758 idosos e o uso de anti-inflamatórios e analgésicos era feito por 28,8%. O paracetamol e o ibuprofeno foram os mais utilizados. No que diz respeito à autopercepção de saúde, quanto pior a saúde relatada, maior o uso da terapêutica (p<0,001). A doença hepática e artrose/artrite/reumatismo mostraram estar associadas ao uso de anti-inflamatórios e analgésicos (p<0,001). A prevalência de uso de anti-inflamatórios e analgésicos foi considerada moderada quando comparada a estudos prévios (28,8%). Além disso, a maioria dos idosos fazia uso desses medicamentos quando era preciso, provavelmente porque sentia dores leves a moderadas, não sendo necessário o uso contínuo da medicação ou também por sofrer com os efeitos adversos desses medicamentos, optando por usá-los esporadicamente.

AbstractThe aim of this study was to analyze the prevalence of the use of anti-inflammatory and analgesic drugs among elderly persons from the Family Health Program in Porto Alegre, Rio Grande do Sul, and investigate associated factors such as sociodemographic and health data; continuous or as needed use of drug, drug used subject to medical prescription or self-medicated. Data collection occurred between March 2011 and December 2012. Community health workers applied a questionnaire relating to sociodemographic and health data and medication use. Non-steroidal anti-inflammatory drugs, glucocorticoids, non-opioid analgesics and opioids were evaluated. A total of 758 elderly persons were included and anti-inflammatory and analgesic drugs were used by 28.8% of the population. Acetaminophen and ibuprofen were the most frequently used drugs. Regarding self-perception of health, the worse the perception of health, the greater was the use of therapy (p<0.001). Liver disease and osteoarthritis/arthritis/rheumatism were found to be associated with anti-inflammatory and analgesic use (p<0.001). The prevalence of anti-inflammatory and analgesic use was considered moderate when compared to previous studies (28.8%). In addition, most of the elderly persons used the drugs when only needed, most probably due to feeling minor to moderate pain or because they had suffered the adverse effects of these medications in the past and so chose to use them sporadically.

Hematological parameters and prevalence of anemia among free-living elderly in south Brazil

OBJECTIVE: The aims of this study were to analyze the hematological parameters, the prevalence of anemia and the association between anemia and socioeconomic conditions in an elderly community-based population. METHODS: A population-based study was performed as part of the Multidimensional Study of the Elderly in Porto Alegre, Brazil (EMIPOA). An initial total of 1058 community residents aged 60 years and older were interviewed. Of these, 392 agreed to have a physical evaluation and a blood sample was taken from each. The hematological parameters analyzed in the blood samples included the hemoglobin concentration, mean cell volume (MCV), mean corpuscular hemoglobin concentration (MCHC) and red cell distribution width (RDW). The association between the variables and the diagnosis of anemia was assessed using the chi-squared test and a multiple logistic regression model. RESULTS: The overall prevalence of anemia was 12.8%. Anemia was present in 13.7% of women and in 10.4% of men. Normocytic normochromic anemia without anisocytosis was the most common type of anemia (46%). The assessment of erythrocyte morphology showed significant differences between anemic and non-anemic individuals (microcytosis = 12% vs. 1.5%, hypochromia = 40% vs. 8.8%, and anisocytosis = 26% vs. 7%). In the analysis of socioeconomic conditions, significant differences were found in respect to age and race. CONCLUSION: The prevalence of anemia increases with age and is associated with race, microcytosis, hypochromia and anisocytosis. Anemia is not a condition that should be associated only with the aging process, as it may be due to pathological conditions that occur most frequently in this age group. As a result, a diagnosis of anemia warrants adequate clinical attention.

Perfil da pesquisa clínica no Brasil / Profile of clinical research in Brazil

A pesquisa clínica é definida por ser qualquer investigação em seres humanos,objetivando descobrir ou verificar os efeitos farmacodinâmicos, farmacológicos,clínicos e identificar reações adversas ao produto em investigação com o intuito de averiguar sua segurança e eficácia. O objetivo deste estudo foi realizar uma revisão bibliográfica a fim de estabelecer um perfil da pesquisa clínica realizada nos últimos dez anos no Brasil. Para esta revisão, utilizou-se livros e artigos científicos publicados nos seguintes bancos de informações: SciELO e PubMed. Também foram utilizados dados da Organização Pan-Americana da Saúde, Agência Nacional de Vigilância Sanitária, e outros portais destinados à pesquisa clínica. Os dados coletados apontam um crescimento e o fortalecimento da pesquisa clínica no Brasil. Os desafios a serem vencidos são ainda grandes, mas o futuro para o setor de Pesquisa e Desenvolvimento na área farmacêutica no Brasil é, sem dúvida,muito promissor.

Clinical research is defined as any research in humans, with the objective to discover or to verify the pharmacodynamic, pharmacological and clinical effects,and to identify adverse reactions of a product in research, with the purpose to investigate its safety and efficacy. The aim of this study was to conduct a literature review in order to establish a profile of clinical research performed in the last ten years in Brazil. For this review, we used books and scientific articles published in the following data bank information: SciELO and PubMed. There were also used data from the Pan American Health Organization, National Health Surveillance Agency,and other portals for clinical research. The collected data indicate a growth and strengthening of clinical research in Brazil. The challenges to be overcome are still large, but the future for the sector Research and Development in pharmaceuticals in Brazil is certainly very promising.

Gender differences, polypharmacy, and potential pharmacological interactions in the elderly

OBJECTIVE: This study aims to analyze pharmacological interactions among drugs taken by elderly patients and their age and gender differences in a population from Porto Alegre, Brazil. METHODS: We retrospectively analyzed the database provided by the Institute of Geriatric and Gerontology, Porto Alegre, Brazil. The database was composed of 438 elderly and includes information about the patients' disease, therapy regimens, utilized drugs. All drugs reported by the elderly patients were classified using the Anatomical Therapeutic and Chemical Classification System. The drug-drug interactions and their severity were assessed using the Micromedex® Healthcare Series. RESULTS: Of the 438 elderly patients in the data base, 376 (85.8 percent) used pharmacotherapy, 274 were female, and 90.4 percent of females used drugs. The average number of drugs used by each individual younger than 80 years was 3.2±2.6. Women younger than 80 years old used more drugs than men in the same age group whereas men older than 80 years increased their use of drugs in relation to other age groups. Therefore, 32.6 percent of men and 49.2 percent of women described at least one interaction, and 8.1 percent of men and 10.6 percent of women described four or more potential drug-drug interactions. Two-thirds of drug-drug interactions were moderate in both genders, and most of them involved angiotensin-converting enzyme inhibitor, non-steroidal anti-inflammatory, loop and thiazide diuretics, and β-blockers. CONCLUSION: Elderly patients should be closely monitored, based on drug class, gender, age group and nutritional status.

Uso de hipoglicemiantes e adesã à terapia por pacientes diabéticos atendidos no Sistema Único de Saúde / Use of oral hypoglycemic agents and adherence to therapy by diabetics in the Brazilian Unified Health System

Introdução: A incidência de Diabetes Melito atinge proporções epidêmicas fazendo com que sua prevenção seja uma prioridade de saúde pública. Programas de Atenção Farmacêutica vêm se destacando como instrumentos no cuidado dos pacientes diabéticos. Objetivo: Avaliar o uso de hipoglicemiantes e a adesão à terapia por pacientes diabéticos atendidos pelo Sistema Único de Saúde. Métodos: Foi realizado um estudo transversal. Utilizou-se um questionário farmacoterapêutico e avaliaram-se os valores de glicemia capilar, colesterol, triglicerídeos, hemoglobina glicada, pressão arterial e índice de massa corporal. Foi avaliada a existência dos Problemas Relacionados com Medicamentos. Resultados: Foram entrevistados 52 pacientes diabéticos, com idade média de 69,2±10,8 anos para as mulheres e 67,8 ±10,9 anos para os homens. Os valores de hemoglobina glicada mostraram diferença significativa (P<0,001) entre os sexos e o índice de massa corporal mostrou-se acima dos valores normais. Verificou-se que 51,9% dos pacientes utilizava mais de 5 medicamentos e 48,1% eram pouco aderentes à terapia. Encontrou-se 21 potenciais interações medicamentosas. Conclusão: Este estudo mostra a relevância do acompanhamento farmacoterapêutico à pacientes diabéticos e a importância do comprometimento de toda a equipe de saúde para desenvolver e acompanhar o plano terapêutico desses pacientes.

Background: The incidence of diabetes mellitus has reached epidemic proportions; therefore, its prevention is a public health priority in our days. Pharmaceutical care programs have gained prominence as a tool in the care of diabetic patients. Aim: To evaluate the use of hypoglycemic agents as well as the adherence to therapy by diabetic patients receiving treatment from the Brazilian Unified Health System. Methods: We conducted a cross-sectional study. A pharmacotherapeutic questionnaire was administered and values of capillary blood glucose, cholesterol, triglycerides, glycated hemoglobin, blood pressure, and body mass index were assessed. We evaluated the existence of drug related problems and drug interactions. Results: Fifty-two diabetic patients were interviewed with a mean age of 69.2±10.8 for women and 67.8±10.9 for men. Glycated hemoglobin levels showed significant difference (P<0.001) between men and women, body mass index was found to be above normal. The analysis of the drugs showed that 51.9% of the patients used more than five drugs and 48.1% of the patients were poorly adherent to therapy. We found 21 potential drug interactions. Conclusion: The present study demonstrates the relevance of the pharmaceutical follow-up of patients with diabetes; thus, the commitment of the entire health care team to develop and monitor the treatment of these patients is very important.

Potential interactions of central nervous system drugs used in the elderly population / Potenciais interacções do sistema nervoso central medicamentos utilizados na população idosa

OBJECTIVE: To describe the use of CNS drugs and to identify the most frequently observed potential drug interactions in the elderly living in Southern Brazil. METHODS: A population-based, transversal and observational study was carried out during 2006-2007. Four hundred and eighty elderly individuals of both genders were randomly recruited and interviewed. A validated pharmacotherapeutic questionnaire and the Micromedex® Healthcare Series were utilized to analyze potential drug interactions. A severity rating scale employing the categories of "mild", "moderate" and "severe" was used to describe the interactions. RESULTS: A population of elderly living in Southern Brazil was interviewed and 98 reported using CNS drugs, 74.5 percent female and 25.5 percent male. Out of these patients, 32.0 percent reported severe or moderate pharmacological interactions related to the use of other drugs. Alprazolam and imipramine were reported to potentially interact with tobacco. Twenty potential moderate drug/ethanol interactions were found. The potential drug/caffeine interactions were classified as mild on the severity scale. CONCLUSION: Elderly being prescribed drugs that act on the CNS should be closely monitored, and furthermore, should be warned against potential drug-drug, drug-ethanol, and drug-tobacco interactions.

OBJETIVO: Descrever o uso de medicamentos que atuam no sistema nervoso central (SNC) e identificar as possíveis interações mais frequentes com esses medicamentos em idosos do sul do Brasil. MÉTODOS: Estudo de base populacional, transversal e observacional, realizado durante 2006-2007. Quatrocentos e oitenta idosos de ambos os sexos foram randomizados e entrevistados. Foram utilizados um questionário farmacoterapêutico validado e o programa Micromedex® Healthcare Series para analisar as potenciais interações com os medicamentos. Foi utilizada uma escala para descrever a gravidade das interações nas categorias de "leve", "moderada" e "grave". RESULTADOS: A população idosa, moradora do sul do Brasil, que utilizava medicamentos para o SNC, era formada por 98 pacientes, 75,5 por cento mulheres e 25,5 por cento homens. Destes pacientes, 32,0 por cento apresentaram interações farmacológicas graves ou moderadas relacionadas com a utilização de outros medicamentos. Alprazolam e Imipramina, usados pela população, apresentaram riscos de potenciais interações com tabaco. Foram encontradas vinte potenciais interações moderadas medicamento/etanol. As potenciais interações medicamento/cafeína foram classificadas como leves. CONCLUSÃO: Os pacientes idosos deveriam ser rigorosamente monitorizados, e ainda, é necessário advertir quanto às potenciais interações de medicamentos que atuam no SNC com outros medicamentos, etanol e tabaco.

Adesão à prescrição médica em idosos de Porto Alegre, RS / Medication adherence of elderly in Porto Alegre, RS

Polifarmácia e falta de adesão à prescrição médica são problemas freqüentes na terapêutica farmacológica de idosos que podem prejudicar o resultado do seu tratamento. Realizou-se um estudo transversal exploratório e quantitativo em base populacional para levantar a freqüência de idosos aderentes e avaliar se a polifarmácia interfere na adesão. A pesquisa foi realizada com 466 idosos de Porto Alegre, RS. Os instrumentos foram aplicados por entrevista individual. A freqüência de idosos aderentes foi de 173 (37,1 por cento) e maior entre os que utilizavam menos fármacos. Os resultados encontrados sugerem a implementação de programas educacionais para auxiliar os idosos no seguimento à terapêutica farmacológica.

Polipharmacy and medication non-adherence are problems faced frequently in the treatment of elderly patients. An exploratory cross-sectional study and quantitative approach were conducted to assess the frequency of treatment-adherence in elderly and how polipharmacy can affect adherence. Four hundred and sixty six elderly answered a questionnaire in Porto Alegre, RS in individual interviews. The adherence frequency found was 173 (37.1 percent) and was higher among those, who use less medication. These results indicate the need for implementing educational programs for the elderly in order to help them to follow their drug therapy.

Estudo de utilização de anti-ulcerosos na população idosa de Porto Alegre, RS, Brasil / Study of antiulcerous utilization in the elderly population of Porto Alegre, RS, Brazil

O aumento gradativo da longevidade destaca-se como uma das mais importantes mudanças demográficas das últimas décadas. A incidência de usuários de anti-ulcerosos vem aumentando nessa parcela da população, e com isso, a necessidade do fortalecimento na relação profissional-usuário. Objetivos: Descrever a terapia anti-ulcerosa utilizada pela população idosa de Porto Alegre, RS, Brasil e analisar a necessidade de implementação de um programa de atenção farmacêutica a esses pacientes. Métodos: Estudo transversal exploratório e observacional. O instrumento utilizado para a coleta de dados foi uma ficha de seguimento farmacoterapêutico testada e validada. Os dados foram tabulados e analisados com o uso do programa SPSS 14,0. Resultados: Do total de 514 pacientes entrevistados, 13,2% utilizavam medicamentos para terapia das doenças ácido-pépticas. Os inibidores da bomba de prótons foram a subclasse de medicamentos mais utilizadas, seguidos pelos antagonistas de receptores H2. Foi observada grande presença de polifarmácia. Apenas 32,2% dos idosos se automedicam, em contrapartida, 71,2% não entendem a receita médica e 81,4% esquecem de ingerir seus medicamentos com freqüência. Conclusão: A grande variabilidade farmacocinética e farmacodinâmica dessa população evidenciam a importância deste estudo, a fim de evitar erros farmacoterapêuticos que poderão ocasionar interações farmacológicas e reações adversas. Portanto, é justificada a implementação de um programa de atenção farmacêutica ao paciente idoso que utiliza anti-ulcerosos.

The gradual increase of the longevity is distinguished as one of the most important demographic changes of the last decades. The incidence of antiulcerous users is increasing in this age group, and this strengthens the necessity of the professional-user relation. Objectives: To describe the antiulcerous therapy used by the elderly population of Porto Alegre, RS, Brazil and to analyze the implementation necessity of a pharmaceutical care program to these patients. Methods: Cross-sectional, observational and exploratory study. The instrument used for the data collection was a validated pharmacotherapy questionnaire tabulated and analyzed by the SPSS 14.0 computer program. Results: Of the total of 514 interviewed patients, 13.2% use medicines to acid-peptic illnesses. The inhibitor of proton pump was the medicine subclass more used, followed by the histamine 2 receptor (H2R) antagonist. Great presence of polypharmacy was observed. Only 32.2% of the elderly use self-medication. On the other hand, 71.2% do not understand the medical prescription and 81.4% forget their medicines. Conclusion: The great pharmacokinetic and pharmacodynamic variability of this population evidences the importance of this study, in order to prevent errors that can cause drugs interactions and side effects. Therefore, the implementation of a pharmaceutical care program to the elderly patient who use antiulcerous is justified.