RESUMO

In the New World, dogs are considered the main reservoir of visceral leishmaniasis (VL). Due to inefficacies in existing treatments and the lack of an efficient vaccine, dog culling is one of the main strategies used to control disease, making the development of new therapeutic interventions mandatory. We previously showed that Tanespimycin (17-AAG), a Hsp90 inhibitor, demonstrated potential for use in leishmaniasis treatment. The present study aimed to test the safety of 17-AAG in dogs by evaluating plasma pharmacokinetics, dose-proportionality, and the tolerability of 17-AAG in response to a dose-escalation protocol and multiple administrations at a single dose in healthy dogs. Two protocols were used: Study A: four dogs received variable intravenous (IV) doses (50, 100, 150, 200, or 250 mg/m2) of 17-AAG or a placebo (n = 4/dose level), using a cross-over design with a 7-day "wash-out" period; Study B: nine dogs received three IV doses of 150 mg/m2 of 17-AAG administered at 48 h intervals. 17-AAG concentrations were determined by a validated high-performance liquid chromatographic (HPLC) method: linearity (R2 = 0.9964), intra-day precision with a coefficient of variation (CV) ≤ 8%, inter-day precision (CV ≤ 20%), and detection and quantification limits of 12.5 and 25 ng/mL, respectively. In Study A, 17-AAG was generally well tolerated. However, increased levels of liver enzymes-alanine aminotransferase (ALT), aspartate aminotransferase (AST), and gamma-glutamyl transferase (GGT)-and bloody diarrhea were observed in all four dogs receiving the highest dosage of 250 mg/m2. After single doses of 17-AAG (50-250 mg/m2), maximum plasma concentrations (Cmax) ranged between 1405 ± 686 and 9439 ± 991 ng/mL, and the area under the curve (AUC) plotting plasma concentration against time ranged between 1483 ± 694 and 11,902 ± 1962 AUC 0-8 h µg/mL × h, respectively. Cmax and AUC parameters were dose-proportionate between the 50 and 200 mg/m2 doses. Regarding Study B, 17-AAG was found to be well tolerated at multiple doses of 150 mg/m2. Increased levels of liver enzymes-ALT (28.57 ± 4.29 to 173.33 ± 49.56 U/L), AST (27.85 ± 3.80 to 248.20 ± 85.80 U/L), and GGT (1.60 ± 0.06 to 12.70 ± 0.50 U/L)-and bloody diarrhea were observed in only 3/9 of these dogs. After the administration of multiple doses, Cmax and AUC 0-48 h were 5254 ± 2784 µg/mL and 6850 ± 469 µg/mL × h in plasma and 736 ± 294 µg/mL and 7382 ± 1357 µg/mL × h in tissue transudate, respectively. In conclusion, our results demonstrate the potential of 17-AAG in the treatment of CVL, using a regimen of three doses at 150 mg/m2, since it presents the maintenance of high concentrations in subcutaneous interstitial fluid, low toxicity, and reversible hepatotoxicity.

RESUMO

OBJECTIVE: To estimate the prevalence of multimorbidity in elderly people and its association with sociodemographic characteristics, lifestyle, and anthropometry. METHODS: This was a cross-sectional study using data from the National Health Survey, 2019. A total of 22,728 elderly individuals from all 27 Brazilian states were randomly selected. Poisson regression models with robust variance were employed, and a significance level of 5% was adopted. RESULTS: The prevalence of multimorbidity was 51.6% (95% CI: 50.4-52.7), with the highest estimates observed in the South and Southeast. Multimorbidity was associated with being female (aPR = 1.33; 95% CI: 1.27-1.39), being 80 years old or older (aPR = 1.12; 95% CI: 1.05-1.19), having low education (aPR = 1.16; 95% CI: 1.07-1.25), past cigarette use (aPR = 1.16; 95% CI: 1.11-1.21), insufficient physical activity (aPR = 1.13; 95% CI: 1.06-1.21), and screen use for 3 hours or more per day (aPR = 1.13; 95% CI: 1.08-1.18). CONCLUSION: Multimorbidity affects more than half of the elderly population in Brazil and is associated with social, demographic, and behavioral factors.

Assuntos

RESUMO

ABSTRACT Objective: To estimate the prevalence of multimorbidity in elderly people and its association with sociodemographic characteristics, lifestyle, and anthropometry. Methods: This was a cross-sectional study using data from the National Health Survey, 2019. A total of 22,728 elderly individuals from all 27 Brazilian states were randomly selected. Poisson regression models with robust variance were employed, and a significance level of 5% was adopted. Results: The prevalence of multimorbidity was 51.6% (95% CI: 50.4-52.7), with the highest estimates observed in the South and Southeast. Multimorbidity was associated with being female (aPR = 1.33; 95% CI: 1.27-1.39), being 80 years old or older (aPR = 1.12; 95% CI: 1.05-1.19), having low education (aPR = 1.16; 95% CI: 1.07-1.25), past cigarette use (aPR = 1.16; 95% CI: 1.11-1.21), insufficient physical activity (aPR = 1.13; 95% CI: 1.06-1.21), and screen use for 3 hours or more per day (aPR = 1.13; 95% CI: 1.08-1.18). Conclusion: Multimorbidity affects more than half of the elderly population in Brazil and is associated with social, demographic, and behavioral factors.

RESUMEN Objetivo: Estimar la prevalencia de multimorbilidad en personas mayores y su asociación con características sociodemográficas, estilo de vida y antropometría. Métodos: Estudio transversal, con datos de la Encuesta Nacional de Salud, 2019. Se seleccionaron aleatoriamente 22.728 personas mayores de los 27 estados brasileños. Se emplearon modelos de regresión de Poisson con varianza robusta y se adoptó un nivel de significancia del 5%. Resultados: La prevalencia de multimorbilidad fue del 51,6% (IC95%: 50,4-52,7), siendo las mayores estimaciones observadas en el Sur y Sudeste. La multimorbilidad se asoció con el sexo femenino (RPa=1,33; IC95%: 1,27-1,39), tener 80 años o más (RPa= 1,12; IC95%: 1,05-1,19), baja escolaridad (RPa=1,16; IC95%:1,07-1,25), consumo de cigarrillo en el pasado (RPa=1,16; IC95%:1,11-1,21), práctica insuficiente de actividad física (RPa= 1,13; IC95%:1,06-1,21) y uso de pantallas por 3 horas o más al día (RPa=1,13; IC95%:1,08-1,18). Conclusión: La multimorbilidad afecta a más de la mitad de la población anciana de Brasil y está asociada a factores sociales, demográficos y conductuales.

RESUMO Objetivo: Estimar a prevalência de multimorbidade em pessoas idosas e sua associação com características sociodemográficas, estilo de vida e antropometria. Métodos: Estudo transversal, com dados da Pesquisa Nacional de Saúde, 2019. Foram selecionadas aleatoriamente 22.728 pessoas idosas dos 27 estados brasileiros. Empregaram-se modelos de regressão de Poisson com variância robusta e adotou-se um nível de significância de 5%. Resultados: A prevalência de multimorbidade foi de 51,6% (IC95%: 50,4-52,7), sendo as maiores estimativas observadas no Sul e Sudeste. A multimorbidade foi associada ao sexo feminino (RPa=1,33; IC95%: 1,27-1,39), ter 80 anos ou mais (RPa= 1,12; IC95%: 1,05-1,19), baixa escolaridade (RPa=1,16; IC95%:1,07-1,25), consumo de cigarro no passado (RPa=1,16; IC95%:1,11-1,21), prática insuficiente de atividade física (RPa= 1,13; IC95%:1,06-1,21) e uso de telas por 3 horas ou mais por dia (RPa=1,13; IC95%:1,08-1,18). Conclusão: A multimorbidade afeta mais da metade da população idosa do Brasil e está associada a fatores sociais, demográficos e comportamentais.

RESUMO

Leishmaniasis is a widespread group of infectious diseases that significantly impact global health. Despite high prevalence, leishmaniasis often receives inadequate attention in the prioritization of measures targeting tropical diseases. The causative agents of leishmaniasis are protozoan parasites of the Leishmania genus, which give rise to a diverse range of clinical manifestations, including cutaneous and visceral forms. Visceral leishmaniasis (VL), the most severe form, can be life-threatening if left untreated. Parasites can spread systemically within the body, infecting a range of organs, such as the liver, spleen, bone marrow and lymph nodes. Natural reservoirs for these protozoa include rodents, dogs, foxes, jackals, and wolves, with dogs serving as the primary urban reservoir for Leishmania infantum. Dogs exhibit clinical and pathological similarities to human VL and are valuable models for studying disease progression. Both human and canine VL provoke clinical symptoms, such as organ enlargement, fever, weight loss and abnormal gamma globulin levels. Hematologic abnormalities have also been observed, including anemia, leukopenia with lymphocytosis, neutropenia, and thrombocytopenia. Studies in dogs have linked these hematologic changes in peripheral blood to alterations in the bone marrow. Mouse models of VL have also contributed significantly to our understanding of the mechanisms underlying these hematologic and bone marrow abnormalities. This review consolidates information on hematological and immunological changes in the bone marrow of humans, dogs, and mice infected with Leishmania species causing VL. It includes findings on the role of bone marrow as a source of parasite persistence in internal organs and VL development. Highlighting gaps in current knowledge, the review emphasizes the need for future research to enhance our understanding of VL and identify potential targets for novel diagnostic and therapeutic approaches.

Assuntos

RESUMO

Dogs play an important role in transmission of Leishmania infantum, but epidemiologic and clinical studies of canine tegumentary leishmaniasis (CTL) are scarce. In an endemic area of human American tegumentary leishmaniasis (ATL) caused by Leishmania braziliensis, we determine the prevalence and incidence of both CTL and subclinical (SC) L. braziliensis infection in dogs and evaluated if the presence of dogs with CTL or SC L. braziliensis infection is associated with the occurrence of human ATL. SC infection in healthy animals and CTL in animals with ulcers were determined by PCR on biopsied healthy skin or on ulcers or by detecting antibodies against soluble leishmania antigen. We compared the occurrence of human ATL in homes with dogs with CTL or SC infection with control homes without dogs or with dogs without CTL or SC infection. The prevalence of SC infection was 35% and of CTL 31%. The incidence of SC infection in dogs was 4.6% and of CTL 9.3%. The frequency of ATL in humans was 50% in homes with infected dogs and 13% in homes without L. braziliensis infection in dogs. CTL and SC infection is highly prevalent, and dogs may participate in the transmission chain of L. braziliensis.

RESUMO

BACKGROUND: Foods that promote health benefits are being increasingly used. Innovative techniques, such as nanotechnology, have been used to improve functional properties, sensory characteristics, or the conservation of foods. OBJECTIVE: The objective of this study was to identify the technological domain of patents for tomato products with or without nanotechnology and elucidate the technological advances associated with the recent use of tomatoes as a natural food dye in the food industry by exploring patent documents. METHODS AND RESULTS: The search was conducted using the Espacenet and INPI databases. There was an increase in patent document applications employing nanotechnology in 2013, with a peak between 2017 and 2018. China is the lead country in the number of patent applications. In Brazil, the patent applications are variable, and the food industry is most involved in studies on tomatoes as a natural food dye. Most patent deposits using nanotechnology were from companies, and the main sources of the patent application were the food and pharmaceutical industries. CONCLUSION: There is an increasing trend for the use of tomatoes as natural food dyes, produced with or without nanotechnology, and number of patents filed yearly. New technologies are being developed in several application areas.

Assuntos

RESUMO

Ser mãe é um marco do desenvolvimento psicológico da mulher. Desse modo, a partir da confirmação da gravidez, há a necessidade de uma reestruturação e reajustamento de sua vida, com o intuito de tornar a experiência mais segura para mãe e filho. Sendo assim, a presente pesquisa tem como finalidade compreender os impactos emocionais no período gravídico puerperal, bem como investigar os efeitos do pré-natal psicológico na redução de possíveis psicopatologias que afetam mulheres no período reprodutivo. Em relação a metodologia, trata-se de uma Revisão Integrativa de literatura, sendo utilizadas as plataformas Biblioteca Virtual em Saúde (BVS), Scielo, Capes Periódicos (CAPES) e Periódicos e Eletrônicos em Psicologia (PePSIC), aos descritores foram: Gestação; Puerpério; Acompanhamento psicológico, Pre natal Psicológico. Como resultado, houve a síntese dos artigos com a realização de um quadro incluindo as seguintes informações: autor; ano da publicação; título; metodologia; resultados e conclusão, tais artigos foram organizados por números de forma crescente. Conclui-se, que o pré-natal psicológico é indispensável, pois têm como objetivo principal buscar formas de melhorar o momento do parto e a experiência dessa nova fase, por meio da oferta de programas parentais que incluam ações educativas e aspectos psicodinâmicos. PALAVRAS-CHAVE: Gestação; Puerpério; Acompanhamento Psicológico; Pre-natal Psicológico.

Being a mother is a milestone in a woman's psychological development. Thus, after the confirmation of pregnancy, there is the need for a restructuring and readjustment of her life in order to make the experience safer for mother and child. Thus, the present research aims to understand the emotional impacts of pregnancy and childbirth, as well as to investigate the effects of psychological prenatal care on the reduction of possible psychopathologies that affect women in the reproductive period. Regarding methodology, it is an Integrative Literature Review, being used the platforms Virtual Health Library (VHL), Scielo, Capes Periodicals (CAPES) and Periodicals and Electronic Psychology (PePSIC), the descriptors were: Pregnancy; Puerperium; Psychological monitoring, Psychological prenatal. As a result, there was the synthesis of the articles with the realization of a table including the following information: author; year of publication; title; methodology; results and conclusion, such articles were organized by numbers in an increasing form. It is concluded that prenatal psychology is indispensable, since its main objective is to seek ways to improve the moment of birth and the experience of this new phase, by offering parenting programs that include educational actions and psychodynamic aspects.

Ser madre es un hito en el desarrollo psicológico de la mujer. Por lo tanto, después de la confirmación del embarazo, hay la necesidad de una reestructuración y reajuste de su vida con el fin de hacer la experiencia más segura para la madre y el niño. Por lo tanto, la presente investigación tiene como objetivo comprender los impactos emocionales del embarazo y el parto, así como investigar los efectos de la atención psicológica prenatal en la reducción de posibles psicopatologías que afectan a las mujeres en el período reproductivo. En cuanto a la metodología, se trata de una Revisión Integrativa de Literatura, siendo utilizadas las plataformas Biblioteca Virtual en Salud (BVS), Scielo, Capes Publicaciones Periódicas (CAPES) y Publicaciones Periódicas y Electrónicas en Psicología (PePSIC), los descriptores fueron: Embarazo; Puerperio; Seguimiento Psicológico, Prenatal Psicológico. Como resultado, hubo la síntesis de los artículos con la realización de una tabla incluyendo las siguientes informaciones: autor; año de publicación; título; metodología; resultados y conclusión, tales artículos fueron organizados por números en forma creciente. Se concluye que la psicología prenatal es indispensable, ya que su principal objetivo es buscar formas de mejorar el momento del nacimiento y la vivencia de esta nueva etapa, ofreciendo programas de crianza que incluyan acciones educativas y aspectos psicodinámicos.

RESUMO

Most dyes used in the food industry are synthetic and can be a health hazard. Red tomato may serve as a natural alternative dye to replace synthetic colorants. This study aimed to review the literature on the addition of red tomato products (powder tomato, paste, freeze-dried, tomato peel powder, tomato pomace) to reduce the usage of synthetic dyes in the food industry. Red tomato products have been used as coloring in pasta, bologna, sausages, cookies, crackers, macaroons, hamburgers, breads, muffins, cheeses, and nuggets. The trans-cis isomerization of lycopene by oxidative processes directly affects the color of the pigment. The lycopene contained in tomato has antioxidant activity and could reduce or eliminate other oxidants and/or synthetic preservatives in food. Moreover, tomatoes in foods have high sensory scores, nutritional appeal, and marketing potential. However, its use as a food colorant has been not extensively explored. Therefore, further studies are still required, especially on the stability of carotenoids in tomatoes used in processed foods.

Assuntos

RESUMO

BACKGROUND: Reports have shown correlations between the immune response to vector saliva and Leishmaniasis outcome. We followed dogs in an endemic area for two years characterizing resistance or susceptibility to canine visceral leishmaniasis (CVL) according to Leishmania infantum diagnosis and clinical development criteria. Then, we aimed to identify a biosignature based on parasite load, serum biological mediators' interactions, and vector exposure intensity associated with CVL resistance and susceptibility. METHODOLOGY/PRINCIPAL FINDINGS: A prospective two-year study was conducted in an area endemic for CVL. Dogs were evaluated at 6-month intervals to determine infection, clinical manifestations, immune profile, and sandfly exposure. CVL resistance or susceptibility was determined upon the conclusion of the study. After two years, 78% of the dogs were infected with L. infantum (53% susceptible and 47% resistant to CVL). Susceptible dogs presented higher splenic parasite load as well as persistence of the parasite during the follow-up, compared to resistant ones. Susceptible dogs also displayed a higher number of correlations among the investigated biological mediators, before and after infection diagnosis. At baseline, anti-saliva antibodies, indicative of exposure to the vector, were detected in 62% of the dogs, reaching 100% in one year. Higher sandfly exposure increased the risk of susceptibility to CVL by 1.6 times (CI: 1.11-2.41). We identified a discriminatory biosignature between the resistant and susceptible dogs assessing splenic parasite load, interaction of biological mediators, PGE2 serum levels and intensity of exposure to sandfly. All these parameters were elevated in susceptible dogs compared to resistant animals. CONCLUSIONS/SIGNIFICANCE: The biosignature identified in our study reinforces the idea that CVL is a complex multifactorial disease that is affected by a set of factors which are correlated and, for a better understanding of CVL, should not be evaluated in an isolated way.

Assuntos

RESUMO

Metabolite profiles of chicken breast extracts and water mobility in breasts were studied using proton nuclear magnetic resonance (1H-NMR) spectroscopy and time-domain NMR (TD-NMR) relaxometry, respectively, using normal breast (NB), and wooden breast (WB) and white striping (WS) myopathies in broilers. One thousand eight hundred sixty broilers were raised to commercial standards, receiving the same diets that were formulated as per the different growth stages. At 49 D of age, 200 animals were slaughtered following routine commercial procedures, and at 4 h postmortem, the whole breast (pectoralis major muscle) was removed and visually inspected by an experienced meat inspector who selected NB (without myopathies) and samples with the presence of WS and WB myopathies. Fifteen breasts (5 each of NB, WS, and WB) were analyzed through TD-NMR relaxometry, and samples of approximately 20 g were taken from each breast and frozen at -80°C for metabolite profiling through 1H-NMR spectroscopy. Multivariate statistical analysis was used to evaluate the effect on water relaxometry and metabolite profile in accordance with the presence and type of myopathy in the breast. 1H-NMR data showed that the metabolite profiles in WS and WB breasts were different from each other and from NB. This pilot study shows that myopathies appear to be related to hypoxia, connective tissue deposition, lower mitochondrial function, and greater oxidative stress compared with NB. The longitudinal and transverse relaxation time of the breasts determined by TD-NMR relaxometry was shorter for NB than that for WS and WB, indicating greater water mobility in breasts affected by myopathies. 1H-NMR spectroscopy can be used to differentiate the metabolism of WS, WB, and NB, and TD-NMR has the potential to be a fast, simple, and noninvasive method to distinguish NB from WB and WS. As a practical application, the metabolomic profile as per the occurrence of breast myopathies may be used for a better understanding of these issues, which opens a gap to mitigate the incidence and severity of WS and WB. In addition, the present study brings an opportunity for the development of a new and objective tool to classify the incidence of breast myopathies through TD-NMR relaxometry.

Assuntos