Dissemination of Carbapenemases and MCR-1 Producing Gram-Negative Bacteria in Aquatic Environments in Batna, Algeria.

Antibiotic-resistant-bacteria are being considered as emerging environmental contaminants where the importance of the surrounding environment in their emergence and dissemination has been emphasized. The aim of this study was to screen for the presence and diversity of carbapenem- and colistin-resistant Gram-negative bacteria (GNBs) in different aquatic environments. Water samples were collected in Batna, Algeria.

Taxonomic review of the genus Thalpomena Saussure, 1884 with new synonyms.

The genus Thalpomena Saussure, 1884 is distributed in North Africa, Somalia and Ethiopia. It currently contains nine species, including one species with four subspecies; Seven of them (including one with four subspecies) are distributed in the Atlas Mountains, one in Libya and one (originally described in the genus Vosseleria) in the Somali Highlands. In this study, we propose taxonomic changes based on morphological, genetic, ecological and morphometric data from a previous study.

MCR-5-Producing Colistin-Resistant Cupriavidus gilardii Strain from Well Water in Batna, Algeria.

This paper presents the first description of the gene in a colistin-resistant Cupriavidus gilardii isolate from well water that supplies a maternity hospital in Algeria. The whole-genome sequence of this strain showed the presence of putative β-lactamase, , and multidrug efflux pump-encoding genes, which could explain the observed multidrug resistance phenotype. Our findings are of great interest, as we highlight a potential contamination route for the spread of genes.

Epidemiology of mobile colistin resistance (mcr) genes in aquatic environments.

Colistin is one of the last-line therapies against multidrug-resistant Gram-negative pathogens, especially carbapenemase-producing isolates, making resistance to this compound a major global public-health crisis. Until recently, colistin resistance in Gram-negative bacteria was known to arise only by chromosomal mutations. However, a plasmid-mediated colistin resistance mechanism was described in late 2015.

Emergence of Metallo-β-Lactamases and OXA-48 Carbapenemase Producing Gram-Negative Bacteria in Hospital Wastewater in Algeria: A Potential Dissemination Pathway Into the Environment.

Antibiotic-resistant bacteria can leave hospitals and therefore contaminate the environment and, most likely, humans and animals, through different routes, among which wastewater discharge is of great importance. This study aims to assess the possible role of hospital sewage as reservoir and dissemination pathway of carbapenem-resistant Gram-negative bacilli (GNB). Carbapenem-resistant GNB were selectively isolated from wastewater collected from a public hospital in Batna, Algeria.

Carbapenemase-producing Gram-negative bacteria in aquatic environments: a review.

Antibiotic resistance is one of the greatest public-health challenges worldwide, especially with regard to Gram-negative bacteria (GNB). Carbapenems are the β-lactam antibiotics of choice with the broadest spectrum of activity and, in many cases, are the last-resort treatment for several bacterial infections. Carbapenemase-encoding genes, mainly carried by mobile genetic elements, are the main mechanism of resistance against carbapenems in GNB.

Photodegradation of Organophosphorus Pesticides in Honey Medium by Solar Light Irradiation.

In this study, the photodegradation of organophosphorus (OPs) pesticides in the honey medium was evaluated under sunlight irradiation. Some of the 22 samples collected at different sites contained OPs pesticides (Methyl parathion, Coumaphos and Fenitrothion) with an average of 8 ng/g. Moreover, three samples were found with pesticide residue levels exceeding the maximum residue limits (MRL ≥ 50 ng/g) imposed by the standard water (WHO).

Description of Dociostaurus biskrensis sp. nov. and male allotypes of four species: Pamphagulus bodenheimeri dumonti, P. uvarovi, Sphingonotus ebneri and Notopleura pygmaea (Orthoptera: Acridoidea) in the region of Biskra, Algeria.

The new species Dociostaurus biskrensis Moussi & Petit 2013 was collected in the region of Biskra, at the arido-Saharan limit of Eastern Algerian. We also describe the males of four species for which only females were known: Pamphagulus bodenheimeri dumonti, P. uvarovi, Notopleura pygmaea and Sphingonotus ebneri.

Desert acridian fauna (Orthoptera, Acridomorpha): Comparison between steppic and oasian habitats in Algeria.

Through monthly samplings of grasshoppers taken from five sites in oases and two in steppes in the area of Biskra, 45 species could be recorded. Four assemblages of species can be defined, two in the oasian zones, one in the stony steppe and a last one in the sandy steppe. The two oasian assemblages are interpreted in the light of a gradient of salinity and humidity determined by the vegetation.