objective: adhesion of lactobacillus acidophilus (l. acidophilus) to dental porcelain surface may lead to gingival inflammation and secondary caries. surface roughness is among the factors affecting this adhesion. the purpose of this study was to evaluate the effects of four different surface treatment methods on adhesion of l. acidophilus to dental porcelain.   methods: sixty specimens (3x10mm...

background and objectives: bacterial vaginosis (bv) is a common disorder which happens when the balance of bacterial flora in vagina is disrupted by a shift in concentration of lactobacillus and pathogenic bacteria. it has significant sequelae including increased rates of late miscarriage when diagnosed in early pregnancy, premature rupture of the membranes, endometritis, preterm labour and del...

background: resistance to anti-tuberculosis (tb) drugs is a global problem. previous studies showed that the prevalence of primary mdr-tb is higher and has been increasing. the purpose of this study was to determine the primary drug resistance in strains isolated from patients with smear-positive of the new cases to anti-tb drugs. methods: in this cross-sectional study, 266 smear positive pulmo...

background : prosthetic valve endocarditis (pve) is an important cause of morbidity and mortality associated with heart valve replacement surgery. the aim of the present study was to describe the early outcome of treatment in patients with pve in a single center. methods : the data of all the episodes of pve registered at our institution between 2002 and 2007 were collected and analyzed retrosp...

conclusions although carbohydrate fermentation patterns specified these three isolates as b. infantis, b. bifidum, and b. longum, the molecular results did not confirm b. longum, which is still also controversial in the literature. overall, our results demonstrated that kashk-e zard is a rich potential source of probiotic bacteria and further investigations should be undertaken. results twelve ...

hexachlorocyclohexane, an organochlorine insecticide has been used in agriculture and public health programmes since a very long time. it is very resistant to degradation and thus accumulates in the environment for long time. a microbial consortium was developed in our laboratory which could degrade hexachlorocyclohexane very efficiently in water. a study was carried out to understand the biode...

in pakistan besides pesticide contamination from agricultural field, the manufacturing industriesare also contributing relatively high quantities of toxic pesticides into the environment. these pesticides maybe toxic, mutagenic or carginogenic and may be bioaccumulated or biomagnified by the biota. because ofpersistent nature of pesticides, its removal from environmental system become difficult...

conclusions as l. crispatus and l. jensenni were significantly higher in bv infected women and the cytotoxic effect of l. crispatus on tumoral cervical cells was high, introduction of new probiotics seems necessary. results l. crispatus, l. gasseri, l. iners, l. jensenii, l. acidophilus and l. rhamnosus were the most frequently occurring species in vagina of healthy iranian women. l. crispatus ...

background: food borne pathogens are of the main concerns of food producers and consumers and escherichia coli and staphylococcus aureus create a lot of problems worldwide. the aim of this study was to evaluate antibacterial effects of monolaurin, sorbic acid and potassium sorbate on s. aureus and e. coli at different ph values and nacl concentrations. methods: micro-well dilution assay was use...

introduction: microbial keratitis is an infective process of the cornea with a potentially and serious visual impairments. contact lenses are a major cause of microbial keratitis in the developed countries especially among young people. therefore, the purpose of the present study was to evaluate the frequency and microbiological characteristic of clk in patients referred to the emergency depart...