In-vitro study of hierarchical structures: Anodic oxidation and alkaline treatments onto highly rough titanium cold gas spray coatings for biomedical applications.

Hierarchical structures were obtained applying two different nanotexturing surface treatments onto highly rough commercial pure titanium coatings by cold spray: (i) anodic oxidation and (ii) alkaline treatments. An extended surface characterization in terms of topography, composition, and wettability has been performed to understand how those parameters affect to cell response. Primary human osteoblasts extracted from knee were seeded onto the as-sprayed titanium surface before and after the nanotexturing treatments.

Species identification of archaeological skin objects from Danish bogs: comparison between mass spectrometry-based peptide sequencing and microscopy-based methods.

Denmark has an extraordinarily large and well-preserved collection of archaeological skin garments found in peat bogs, dated to approximately 920 BC - AD 775. These objects provide not only the possibility to study prehistoric skin costume and technologies, but also to investigate the animal species used for the production of skin garments. Until recently, species identification of archaeological skin was primarily performed by light and scanning electron microscopy or the analysis of ancient DNA.

[Nonsteroidal anti-inflammatory agents. 19. Synthesis and activity of stereomeric phenylacetic homologues].

The authors synthesized the title compounds as analogues of previously prepared potential antiphlogistic agents. Starting from appropriate carbonyl compound and alpha-metallated phenylacetic acid the diastereomeric racemate pairs were obtained; they were separated, attributed to erythro/threo-configuration by NMR and finally resolved. The potassium salts of the enantiomers were tested for analgesic and antiinflammatory activity, as well as for acute toxicity.

Comparison of the antithrombotic and haemorrhagic effects of heparin and a new low molecular weight heparin in rats.

A new low molecular weight heparin (LMWH) and a conventional unfractionated heparin (H) were tested in rats for venous antithrombotic activity and bleeding tendency after intravenous administration. Both drugs showed antithrombotic activity, but LMWH at the low dosages tested (0.1 and 0.

Pharmacokinetics and distribution of a fluoresceinated glycosaminoglycan, sulodexide, in rats. Part I: Pharmacokinetics in rats.

Fluorescein-labelled sulodexide pharmacokinetics and urinary excretion were studied in the rat after intravenous administration. The compound showed a pharmacokinetic pattern similar to that of heparin and the plasmatic levels were linearly correlated with anti-factor Xa activity and logarithmically with lipoprotein lipase activation. The compound is well eliminated by urinary route; the urinary recovery was 50% in 24 h and 67% 48 h after administration.

Heparinizable materials (III). Heparin retention power of a poly(amido-amine) either as crosslinked resin, or surface-grafted on PVC.

The retentive power of a poly(amido-amine), in the form of a highly hydrophilic crosslinked resin, has been evaluated at different pH's. The resin releases heparin quantitatively in a very narrow pH range (10.8-11.

[Nonsteroidal anti-inflammatory agents. XIII. 4-Cyclohexylphenylhydroxyalkanoic acids].

The preparation of some homologues of 2-(4-cyclohexylphenyl)-3-hydroxypropionic acid, the separation of the diastereomeric race-mates, their attribution to erythro and threo series, and the optical resolution of the enantiomers are described. The optical antipodes were screened for acute toxicity, as well as for antiinflammatory and analgesic activity.

Synthesis and pharmacological evaluation of new compounds with a potential action on the adrenergic system.

A series of compounds with a potential activity on both alpha and beta-adrenoreceptors were synthesized and evaluated with in vitro and in vivo tests. Aryloxypropanolamino derivatives N-substituted with alpha 2-benzodioxanylmethyl group showed a favourable alpha/beta ratio and a high selectivity towards beta 1 receptors. Substitution with different aralkyl groups afforded compounds with a low alpha-activity, although with a high potency and selectivity towards beta 1 receptors.