abstract aims: bovine mastitis continues to be the most costly disease to the dairy farmers. it dominates in iran as one of the most prevalent diseases in dairy cattle among the dairy farms. mastitis treatment with antibiotics leads to the development of antibiotic resistant strains and consumer health problem. this study was performed for the first time to analyze in vitro effects of hydro-alc...

background: metal nanoparticles have been recently applied in dentistry because of their antibacterial properties. this study aimed to evaluate antibacterial effects of colloidal solutions containing zinc oxide (zno), copper oxide (cuo), titanium dioxide (tio2) and silver (ag) nanoparticles on streptococcus mutans and streptococcus sangius and compare the results with those of chlorhexidine and...

Background: Otitis media with effusion is one of the leading causes of hearing loss in children. Effective treatment of effusion in the middle ear requires appropriate empirical treatment and characterization of responsible pathogens. Objective of the present study was to detect pathogens in clinical samples from patients with otitis media with effusion in our area and to determine the sensitiv...

background: one of the causative factors in development of dental caries is microorganisms. two species of mutans streptococci including streptococcus mutans and streptococcus sobrinus are associated with dental caries in human beings. the aim of this study was to investigate the frequency of s. mutans and s. sobrinus in saliva of children with different caries activity and ability to form biof...

conclusions tuberculosis was an important cause of cap in our region. hence, it should be considered in all patients admitted with a cap diagnosis. results among 120 patients with cap, the most common etiology was s. pneumoniae (24.4%), followed by mycobacterium tuberculosis (17.5%), s. aureus (6.7%), polymicrobial agents including anaerobes (4.2%), complicated hydatid cyst (2.5%), influenza a ...