April 2016

Ruminal microorganism consideration and protein used in the metabolism of the ruminants: A review

A great diversity of species of microorganisms are present in the rumen environmental with specific functions in the degradation of carbohydrates, protein and lipids. However, the knowledge of the interactions between the different species of microorganisms in the rumen ecosystem and their specific substrates were used to improve nutritional management and can increase production of meat or milk. A balanced nutritional...

Author(s): Tiago Neves Pereira Valente, Erico da Silva Lima, Wallacy Barbacena Rosa dos Santos, Andréia Santos Cesário, Cássio Jardim Tavares, Ítalo Lacerda Fernandes and Marco Antônio Moreira de Freitas

April 2016

Helicobacter pylori vacA genotyping in relation to cagA status, ultra-structure of gastric mucosa and clinical outcomes in Egyptian patients

Helicobactor pylori (H. pylori) has been strongly associated with gastritis, peptic ulcer and is linked to an increased risk of gastric cancer. The cytotoxin-associated gene product (cagA) and the vacuolating cytotoxin (vacA) have been implicated as two major virulence factors of H. pylori. Since there is an increasing evidence that genetic variability of H. pylori may have clinical importance, we aimed to evaluate...

Author(s): Manal Diab, Mohamed Shemis, Maged El-Ghannam, Doaa Gamal, Magda Azmy, Dalia Salem, Soheir Mansy and Mohamed Saber

April 2016

Virulence profiles of clinical and environmental Pseudomonas aeruginosa isolates from Central Morocco

The pathogenic potential of Pseudomonas aeruginosa comes from the expression of many secreted and cell surface virulence factors, and its biofilm formation. This study aimed to investigate and compare the virulence profiles of 123 clinical and environmental P. aeruginosa isolated in Meknes (Morocco). Using suitable culture media, phenotypic screening evaluated the production of β-haemolysin, caseinase, lipase,...

Author(s): Itto MAROUI, Asmae ABOULKACEM, Mohammed TIMINOUNI and Abdelhaq BELHAJ

April 2016

Determination of mecA expression and other resistance mechanisms in methicillin-resistant Staphylococcus aureus isolated from Oreochromis niloticus (Nile tilapia)

Methicillin-resistant Staphylococcus aureus is a major cause of infection worldwide. Production of β-lactamases and penicillin-binding protein 2a are the two main mechanisms of resistance in S. aureus. The aim of this work was to study the mechanisms of resistance produced by the S. aureus strain isolated from Oreochromis niloticus (Nile tilapia) during an outbreak. β-Lactamases production was detected by...

Author(s): Magdy K. Soliman, Rania Abozahra, Alkhateib Y. Gaafar, Abdelgayed M. Younes and Nawal A. Affr