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Glycyrrhiza glabra extract is widely known for its antioxidant and anti-inflammatory properties and can improve the wound healing process. The aim of this work was to shorten the time of the healing process by using an eco-sustainable wound dressing based on Spanish broom flexible cellulosic fabric by impregnation with G. glabra extract-loaded ethosomes. Chemical analysis of G. glabra extract was performed by LC-DAD-MS/MS and its encapsulation into ethosomes was obtained using the ethanol injection method. Lipid vesicles were characterized in terms of size, polydispersity index, entrapment efficiency, zeta potential, and stability. In vitro release studies, biocompatibility, and scratch test on 3T3 fibroblasts were performed. Moreover, the structure of Spanish broom dressing and its ability to absorb wound exudate was characterized by Synchrotron X-ray phase contrast microtomography (SR-PCmicroCT). Ethosomes showed a good entrapment efficiency, nanometric size, good stability over time and a slow release of polyphenols compared to the free extract, and were not cytotoxic. Lastly, the results revealed that Spanish broom wound dressing loaded with G. glabra ethosomes is able to accelerate wound closure by reducing wound healing time. To sum up, Spanish broom wound dressing could be a potential new green tool for biomedical applications. [ABSTRACT FROM AUTHOR]

Abstract: A sensitive high-performance liquid chromatographic method has been developed for the determination of homovanillic acid (HVA), the main metabolite of dopamine, in human plasma. Analyses were carried out on a reversed-phase column (C8, 250mm×4.6mm i.d., 5μm) using a mobile phase composed of 10% methanol and 90% aqueous citrate buffer, containing octanesulfonic acid and EDTA at pH 4.8. Coulometric detection was used, setting the guard cell at +0.100V, the first analytical cell at −0.200V and the second analytical cell at +0.500V. A careful solid-phase extraction procedure, based on strong anion exchange (SAX) cartridges (100mg, 1mL), was implemented for the pre-treatment of plasma samples. Extraction yield was satisfactory, being the mean value 98.0%. The calibration curve was linear over the concentration range of 0.2–25.0ngmL−1 of homovanillic acid. The limit of quantitation (LOQ) was 0.2ngmL−1 and the limit of detection (LOD) was 0.1ngmL−1. The method was successfully applied to plasma samples from former alcohol, cocaine and heroin addicts. Results were satisfactory in terms of precision and accuracy. Hence, the method is suitable for the determination of homovanillic acid in human plasma. [Copyright &y& Elsevier]

Argania spinosa(L.) Skeels is an endemic Moroccan species belonging to Sapotaceae family. In this work, lipophilic and aqueous extracts were obtained from leaves and subjected to a chemical profiling by MS and LC-MS/MS. Pentacyclic terpenoids were identified and quantified in the lipophilic fraction, while phenolic compounds (mainly belonging to flavonols and flavan-3-ols) were identified in the aqueous fraction. The antibacterial activities of fractions were evaluatedin vitroagainst both reference Gram-positive and -negative bacterial strains and clinical isolates of methicillin-sensitive and methicillin-resistantStaphylococcus aureus (MSSA and MRSA); in addition, the compounds quantified as main components in each extract were assayed against reference strains. A relevant antibacterial activity was observed against reference MSSA and MRSA strains ofS. aureus: for the lipophilic fraction, MIC50values obtained were 177.8 and 170.6 μg/mL for the former and the latter, respectively, while for the aqueous fraction were 215.5 and 233.3 μg/mL. These inhibitory activities could be mainly ascribed to ursolic and oleanolic acids, among pentacyclic terpenoids, and to quercetin concerning phenolic compounds. A remarkable antibacterial activity was also observed against clinical isolates, thus argan leaves can be considered of interest in the chemotherapy of human infections. [ABSTRACT FROM PUBLISHER]

Abstract: We used Flinder Sensitive Line (FSL) rats, a genetic model of unipolar depression, to examine whether changes in central GABAergic transmission are associated with a depressed phenotype. FSL rats showed an increased behavioral response to low doses of diazepam, as compared to either Sprague Dawley (SD) or Flinder Resistant Line (FRL) rats used as controls. Diazepam at a dose of 0.3mg/kg, i.p., induced a robust impairment of motor coordination in FSL rats, but was virtually inactive in SD or FRL rats. The increased responsiveness of FSL rats was not due to changes in the brain levels of diazepam or its active metabolites, or to increases in the number or affinity of benzodiazepine recognition sites, as shown by the analysis of [3H]-flunitrazepam binding in the hippocampus, cerebral cortex or cerebellum. We therefore examined whether FSL rats differed from control rats for the expression levels of the K+/Cl− cotransporter, KCC2, which transports Cl− ions out of neurons, thus creating the concentration gradient that allows Cl− influx through the anion channel associated with GABAA receptors. Combined immunoblot and immunohistochemical data showed a widespread increase in KCC2 expression in FSL rats, as compared with control rats. The increase was more prominent in the cerebellum, where KCC2 was largely expressed in the granular layer. These data raise the interesting possibility that a spontaneous depressive state in animals is associated with an amplified GABAergic transmission in the CNS resulting from an enhanced expression of KCC2. [Copyright &y& Elsevier]

Introduction: Therapeutic Drug Monitoring (TDM) has several indications in psychiatry including patients with physical comorbidities, suspected non-compliance, severe adverse effects and tailored pharmacotherapy. Antidepressants (AD) are frequently prescribed in patients with Eating Disorders (ED) to reduce binge-eating and compensatory behaviours or to treat comorbid depression and anxiety. Objectives: TDM by means of minimally-invasive biosampling approaches may represent a useful tool in this population, considering the limited efficacy of ED's pharmacological treatment and the high rate of adverse effects. Methods: Nineteen ED outpatients on AD treatment with a Body Mass Index (BMI) <20 kg/m2 or >30 kg/m2 agreed to take part in the present study. Participants were treated with Sertraline (N=5), Fluoxetine (N=5), Vortioxetine (N=5), Citalopram (N=2), Escitalopram (N=1), Fluvoxamine (N=1). Oral fluid samples were collected from patients, together with whole blood dried microsamples, obtained by finger puncture using Volumetric Absorptive Microsampling techniques. Results: Preliminary results showed a significant correlation between plasmatic and salivary concentrations for Vortioxetine only; moreover, extreme BMI did not seem to significantly influence the AD' plasmatic concentrations, when corrected for dosage. Conclusions: Further analyses may permit to validate for the first time the use of these recent microsampling procedures for AD treatment. By increasing the population size, we aim to demonstrate that TDM may represent a valid tool to better understand the limited efficacy of AD in ED patients. Minimally-invasive biosampling approach is well tolerated in patients with belenophobia and, in our experience, is highly appreciated by all patients: it may represent in future a valid support for Precision Medicine. [ABSTRACT FROM AUTHOR]