ResumoObjetivoO objetivo do trabalho foi identificar a prevalência do HTLV-II em doadores de sangue da Hemorrede do Ceará e aspectos epidemiológicos de casos positivos.

SummaryObjectiveTo identify HTLV-II prevalence in blood donors at the Blood Center Net of Ceará (Hemorrede do Ceará - HEMOCE)and epidemiological aspects of positive cases.

A new gradient HPLC method has been developed and validated for the determination of both assay and related substances of donepezil hydrochloride in oral pharmaceutical formulation. Different kinds of columns and gradient elution programs were tested in order to achieve satisfactory separation b...

A HPLC stability-indicating assay for Donepezil hydrochloride in tablets was developed and validated. Donepezil hydrochloride is a reversible inhibitor of acetylcholinesterase, indicated for the treatment of mild to moderate dementia of the Alzheimer's type. The HPLC method was performed wi...

Donepezil is one of the main compounds used in the therapy of Alzheimer’s disease. Oral administration of this drug presents many drawbacks, resulting in treatment non-adherence among patients. Thus, the development of transdermal formulations for donepezil delivery is important. The aim of thi...

Donepezil is used to treat symptomatically the Alzheimer's disease (AD). This drug is a specific inhibitor of the enzyme acetylcholinesterase (AChE), whose main physiological function is to hydrolyze the neurotransmitter acetylcholine. The main objective of this work was to study the effect...

Transdermal drug delivery is an attractive route of drug administration; however, there are relatively few marketed transdermal products. To increase delivery across the skin, strategies to enhance skin permeability are widely investigated, with microneedles demonstrating particular promise. Hyd...

SummaryObjectivesElderly people with dementia are commonly suffered from sleep disorders. So, the use of Donepezil hydrochloride as anti-Alzheimer drug and Trazodone hydrochloride as antidepressants with hypnotic action is very important in these cases. This study reports about novel and sensiti...

A green, simple and cost effective chemometric UV–Vis spectrophotometric method has been developed and validated for correcting interferences that arise during conducting biowaiver studies. Chemometric manipulation has been done for enhancing the results of direct absorbance, resulting from ver...

This paper describes the decoration of pencil graphite electrode (PGE) with a thin film of solochrome black T (SBT) and N-doped carbon nanodots (N-CNDs)/ cobalt nanoparticles (CoNPs) to amplify signal of the measurement. This nanocomposite was chosen to enhance surface activity and electron tran...

Donepezil hydrochloride (DPH) is often used in the treatment of Alzheimer’s disease. A new treatment method was developed by encapsulating high DPH content in the tips of dissolving microneedles for rapid, transdermal delivery of a predetermined dose of DPH. The microneedles were prepared by a ...

Neuropeptides control the functioning of the nervous system of insects, and they are the most diverse signalling molecules in terms of structure and function. Allatostatins are pleiotropic neuropeptides that are considered potent myoinhibitors of muscle contractions in insects. We investigated t...

MuS110 and MT110 are BiTE antibodies bispecific for CD3 and EpCAM, which is the most frequently and highly expressed tumor-associated antigen on breast cancer. And pronounced expression of IDO1 has also been reported in breast cancer. Our study aimed to investigate whether IDO1 inhibitor D-1MT c...

1-methyl-d-tryptophan (D-1MT) reverses the immunosuppressive effect of indoleamine 2,3-dioxygenase (IDO), and it is currently being developed both as a vaccine adjuvant and as an immunotherapeutic agent for combination with chemotherapy. The present study examined the pharmacokinetics and toxici...

Objectiveα-Calcitonin gene-related peptide (CGRP) is a neuropeptide widely distributed in the central and peripheral nervous systems involved in the stabilization of muscle-type cholinergic receptors nicotinic subunits (AChR). However, the underlying mechanism by which this neuropeptide regulat...

The enzyme α-glucosidase has attracted interest owing to its involvement in the digestive process of carbohydrate, its role in intracellular glycoprotein trafficking, tumorigenesis and viral infection. In this study, several members of a new family of N-heteroarylmethyl substituted azasugars we...

A number of new 2-amino-[5, 6, 7 and 8]-O-substituted 1,3-benzoxazines, and 2-amino 8-methyl-7-O-substituted-1,3-benzoxazines were synthesized. Thirty one new compounds were tested for their effect on collagen induced platelet aggregation and it was found that the most active compounds were 8-me...

Tuning metal ion from Cd(II) to Co(II) in the presence of 2,5-thiophenedicarboxylic acid (H2tdc) and semi-rigid bis-imidazole ligand 4-bis(1H-imidazol-1-yl-methyl)benzene(bimb), two metal–organic frameworks, [Cd3(bimb)(μ4-tdc)3(DMA)2]·2DMA (1) and [Co2(bimb)(μ2-H2O)(μ3-tdc)2(DMF)2]·H2O (2)...

A new class of compounds—acridone derivatives—was tested using the direct fluorometric helicase activity assay to determine the inhibitory properties of the derivatives towards the NS3 helicase of Hepatitis C virus (HCV). The compounds were also tested as putative transcription inhibitors of i...

Inhibitors of a human member (AKR1B10) of the aldo–keto reductase superfamily are regarded as promising therapeutics for the treatment of cancer. Recently, we have discovered (Z)-2-(4-methoxyphenylimino)-7-hydroxy-N-(pyridin-2-yl)-2H-chromene-3-carboxamide (1) as the potent competitive inhibito...