Human immunodeficiency virus type 1 (HIV-1) is characterized by high genetic variability due to its high replication rate and the lack of proofreading activity of the reverse transcriptase enzyme. On the basis of phylogenetic analysis performed on numerous isolates from all over the world, HIV-1 is subdivided into types, subtypes, subsubtypes, circulating recombinant forms, and unique recombinant forms. No data are currently available about the circulation of HIV-1 types in Montenegro. Here, we describe the genetic variability of HIV-1 strains identified in plasma samples of patients from Montenegro. Phylogenetic analysis on 32 HIV-1 sequences was carried out. The prevalent circulating HIV-1 subtype is B. The strains were interspersed within the tree. Two main clades (I and II) may suggest independent introductions of HIV-1 subtype B into Montenegro, although other epidemiological evidence will be needed to assume a small number of introductions. No obvious evidence of clustering by residence, age, or sex was found (data not shown). Nelfinavir resistance was found, though lopinavir is the only PI administered. Continuous monitoring of HIV-1-infected individuals is crucial to a better understand of the epidemiology of the B subtype in Montenegro.

The main objective of this study was to determine levels of certain persistent organic pollutants (POPs) in Neretva River, Bosnia and Herzegovina (BiH), which is currently facing implementation of the Stockholm Convention on persistent organic pollutants (POPs) and environmental protection strategies. This is the very first report on the deployment of semipermeable membrane devices (SPMDs) in BiH. SPMDs were used for continuous 3-weeks sampling of POPs at three locations, covering 220 km long stream of the Neretva River. Water concentrations of polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs) and polybrominated diphenylethers (PBDEs) were calculated using performance reference compounds (PRCs). The total OCP concentrations ranged from 40 to 140 pg L−1 and most of compounds were detected only in lower course of the river. Total PAH ranged from 160 to 4000 pg L−1 and show a clear spatial variation. Dominant PAHs were phenanthrene, fluoranthene, fluorene and acenaphthene. Total PCB ranged from undetectable to 120 pg L−1. From the group of 15 PBDE congeners investigated, only PBDE-47 and PBDE-99 were detected. Since the concentrations of broad spectrum of POPs found in the Neretva River are quite low, future actions should be focused on preservation rather than on sanitation measures. Regular monitoring should anyhow be established.

Simultaneous separation of eleven steroid hormones and synthetic anabolics: progesterone, trenbolone acetate melengestrol acetate, 17-β-estradiol, 19-nortestosterone, fluoxymesterone. norethandrolone, 4-chloro-δ-1-methyl testosterone, clostebol acetate, 6-β-hydroxymethandienone and oxymetholone, was performed on HPTLC plates, 10 x 10 cm, silicagel 60 F 254 (Merck) by. horizontal elution in chloroform-acetone mobile phase. The investigated steroids were successfully visualised under UV light (254 nm). and after spraying with an ethanolic solution of/Moluenesulphonic acid. The efficacy of chromatographic system was checked using simulated real samples for some of the examined steroids, melengestrol acetate and trenbolone acetate, usually misused as growth promoters in cattle and stored unchanged in animal tissue.