Results: 5035

Abordagem metabolômica no estudo de exposição gestacional à fumaça de Cannabis sativa em cobaias

Os estudos de metabolômica ganham importância a cada dia, por ajudarem a explicar processos biológicos em situações normais (fisiológicas) ou patológicas. Oferecem uma nova visão sobre o impacto funcional da expressão gênica, complementando os estudos de sequenciamento gênico, que negligenciam...

Análise comparativa de perfis de dissolução in vitro e in silico de comprimidos de liberação modificada contendo metformina

A dissolução de um fármaco a partir de uma forma farmacêutica (FF) sólida oral é um pré-requisito para que o mesmo seja absorvido pelo organismo e cumpra seus efeitos terapêuticos. O ensaio de dissolução de medicamentos permite avaliar a quantidade de princípio ativo que é liberado a partir d...

Relação entre concentração sanguínea de cocaí­na e cocaetileno com a gravidade das manifestações clí­nicas apresentadas por pacientes com diagnóstico de intoxicação por cocaína

As intoxicações decorrentes do uso de drogas de abuso representam atualmente um grave problema para a saúde pública. Dentre os principais agentes envolvidos, destaca-se a cocaína. Ela se tornou uma das drogas mais consumidas ao redor do mundo, sendo um dos principais motivos de atendimentos em pront...

Characterisation of an ABC transporter of a resistant Candida glabrata clinical isolate

Mem. Inst. Oswaldo Cruz; 113 (4), 2018
BACKGROUND Candida glabrata ranks second in epidemiological surveillance studies, and is considered one of the main human yeast pathogens. Treatment of Candida infections represents a contemporary public health problem due to the limited availability of an antifungal arsenal, toxicity effects and increas...

Effectiveness of dog collars impregnated with 4% deltamethrin in controlling visceral leishmaniasis in Lutzomyia longipalpis (Diptera: Psychodidade: Phlebotominae) populations

Mem. Inst. Oswaldo Cruz; 113 (5), 2018
BACKGROUND There is little information on the effect of using deltamethrin-impregnated dog collars for the control of canine visceral leishmaniasis. OBJECTIVES The objective of this study was to evaluate the effectiveness of the use of 4% deltamethrin-impregnated collars (Scalibor®) in controlling vi...

Gastrodin induced HO-1 and Nrf2 up-regulation to alleviate H2O2-induced oxidative stress in mouse liver sinusoidal endothelial cells through p38 MAPK phosphorylation

Braz. j. med. biol. res; 51 (10), 2018
Nuclear factor erythroid-related factor 2 (Nrf2) has been implicated in several detoxifying and antioxidant defense processes. Nrf2-mediated heme oxygenase-1 (HO-1) expression was demonstrated to play a key role against oxidative stress. Gastrodin (GSTD) is a well-known active compound isolated from the ...

The aminoglycoside antibiotic gentamicin is able to alter metabolic activity and morphology of MDCK-C11 cells: a cell model of intercalated cells

Braz. j. med. biol. res; 51 (10), 2018
It is well known that the aminoglycoside antibiotic gentamicin is capable of causing damage to kidney cells. Given the known involvement of Ca2+ in the nephrotoxic action of gentamicin, the purpose of this study was to establish a relationship between the concentration of intracellular Ca2+ ([Ca2+]i) and...

Baicalein alleviates tubular-interstitial nephritis in vivo and in vitro by down-regulating NF-κB and MAPK pathways

Braz. j. med. biol. res; 51 (10), 2018
Tubular-interstitial nephritis (TIN) is characterized by tubular cell damage and inflammatory lesions of kidneys. Baicalein (BAI) is a flavonoid compound found in the roots of Scutellaria baicalensis Georgi. The present study was undertaken to explore the anti-inflammatory and anti-oxidative effects of B...

Saquinavir plus methylprednisolone ameliorates experimental acute lung injury

Braz. j. med. biol. res; 51 (10), 2018
Glucocorticoid insensitivity is an important barrier to the treatment of several inflammatory diseases, including acute lung injury (ALI). Saquinavir (SQV) is an inhibitor of the human immunodeficiency virus protease, and the therapeutic effects of SQV in ALI accompanied with glucocorticoid insensitivity...