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Nabila Soraa - Top 30 Publications

Glyphosate based- herbicide exposure affects gut microbiota, anxiety and depression-like behaviors in mice.

Recently, a number of studies have demonstrated the profound relationship between gut microbiota (GM) alterations and behavioral changes. Glyphosate-based herbicides (GBH) have been shown to induce behavioral impairments, and it is possible that they mediate the effects through an altered GM. In this study, we investigated the toxic effects of GBH on GM and its subsequent effects on the neurobehavioral functions in mice following acute, subchronic and chronic exposure to 250 or 500 mg/kg/day. The effect of these acute and repeated treatments was assessed at the behavioral level using the open field, the elevated plus maze, the tail suspension and splash tests. Then, mice were sacrificed and the intestinal samples were collected for GM analysis. Subchronic and chronic exposure to GBH induced an increase of anxiety and depression-like behaviors. In addition, GBH significantly altered the GM composition in terms of relative abundance and phylogenic diversity of the key microbes. Indeed, it decreased more specifically, Corynebacterium, Firmicutes, Bacteroidetes and Lactobacillus in treated mice. These data reinforce the essential link between GM and GBH toxicity in mice and suggest that observed intestinal dysbiosis could increase the prevalence of neurobehavioral alterations.

Bacteremia due to Kingella denitrificans in a child followed-up for bone marrow failure syndrome.

Kingella denitrificans is a non-pathogenic micro-organism present in oropharyngeal flora. This germ has been recently recognized as responsible for opportunistic invasive infections mainly affecting immunosuppressed patients. We here report the case of a child aged 3 years and 7 months followed-up since the age of one year for bone marrow failure syndrome associated with pancytopenia of undetermined origin who had bacteremia due to Kingella denitrificans, a group of difficult to culture gram-negative bacteria rarely described in the literature. Clinicians and microbiologists should suspect the presence of this germ especially in immunosuppressed patients. The use of blood culture bottle contributes in a significant way to the detection of this germ.

Genes encoding adhesion factors and biofilm formation in methicillin-resistant Staphylococcus aureus in Morocco.

Infections involving methicillin-resistant Staphylococcus aureus (MRSA) remain a serious threat to hospitalized patients worldwide. MRSA is characterized by recalcitrance to antimicrobial therapy, which is a function not only of widespread antimicrobial resistance, but also the capacity to form biofilms. The present study evaluated the presence of genes encoding adhesion factors and the biofilm-forming capacity in MRSA.

Gemella haemolysans brain abscess in a child with complex congenital heart disease.

Gemella haemolysans, a Gram positive cocci which are deemed to be the normal inhabitant of the mucous membranes of the oropharynx, has been recognized as a pathogen involved in abscess formation. The aim of this case report is to demonstrate that it is also involved in brain abscess in children. We report, to our knowledge, the first pediatric case of Gemella haemolysans brain abscess in an 11 years old child carrying a complex congenital heart disease (dextrocardia with single right ventricle) which evolved favorably under antibiotic therapy. Because of its similarity with Streptococcus viridans groupe, Gemella haemolysans often remains under-diagnosed in the laboratory. The contribution of microbiologists in its correct identification is very important.