The Role of Silver Nanoparticles in a Treatment Approach for Multidrug-Resistant Species Isolates.

Purpose: The main objective of this study is to investigate the antibacterial activity of silver nanoparticles (AgNPs) against multidrug-resistant isolates recovered from diarrheic  sheep and goats.

Methods: This study used chemical reduction synthesis of AgNPs to evaluate their antimicrobial effects by estimation of minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) for each isolate using the microplate dilution method and tetrazolium salt reduction test to detect the viability percentage. In vivo treatment efficacy was assessed in mice by determining the viable count of Enteritidis recovered from feces and by hematologic, biochemical and histopathologic examinations to confirm that use of AgNPs has no toxic or pathologic effects and to evaluate its ability in tissue regeneration following treatment.

Morphological and molecular identification of the brown dog tick and the camel tick (Acari: Ixodidae) vectors of Rickettsioses in Egypt.

Aim: Rickettsioses have an epidemiological importance that includes pathogens, vectors, and hosts. The dog tick and the camel tick play important roles as vectors and reservoirs of Rickettsiae. The aim of this study was to determine the prevalence of Rickettsiae in ixodid ticks species infesting dogs and camels in Egypt, in addition to, the morphological and molecular identification of and .