AIMS AND OBJECTIVES The aims of the present study were to determine and compare the effects of different concentrations of Althaea officinalis extract, 0.2% chlorhexidine (CHX), and penicillin on Streptococcus mutans and Lactobacillus acidophilus in vitro. MATERIALS AND METHODS The laboratory study was done, for a period of 8 weeks. Minimum inhibitory concentration (MIC) in the test tube, min...

Salmonella is one of the major pathogenic bacteria that cause food poisoning. This study investigated whether heat-killed as well as live Lactobacillus protects host animal against Salmonella infection. Live and heat-killed Lactobacillusacidophilus was administered orally to Sprague-Dawley rats for 2 weeks before the rats were inoculated with Salmonella. Rise in body temperature was moderate in...

Lactic acid bacteria can affect the maturation of immune cells and their products not only in the gut but also on the systemic immune organs such as lymph nodes and spleen. In the present work, we studied the effects of oral administration of Lactobacillus acidophilus on the immune responses of BALB/c mice bearing transplanted breast tumour. Two groups of female inbred BALB/c mice, each contain...

BACKGROUND The purpose of the study is to assess the antiadherent and antibacterial properties of surface-modified stainless steel and NiTi orthodontic wires with silver against Lactobacillus acidophilus. METHODS This study was done on 80 specimens of stainless steel and NiTi orthodontic wires. The specimens were divided into eight test groups. Each group consisted of 10 specimens. Groups con...

The objective of this study was to determine the effect of feeding direct-fed microbial (DFM) products containing Lactobacillus acidophilus and Propionibacteria freudenreichii on the performance, nutrient digestibility, and rumen fermentation of Holstein dairy cows in midlactation. Experiments were conducted from February to May 2003. Cows were fed 1 of 3 dietary treatments: 1) 1 x 10(9) colony...

can settle in the intestinal tracts and constitute an important part of the indigenous microflora of man and higher animals (Gomes and Malcata, 1999). It exerts a protective role by suppression of pathogenic microorganisms in the intestines and acts as a probiotic (Bergey and Holt, 1994; Gilliland and Speck, 1977; Sandine, 1979). On account of the disturbance of the proliferation and growth of ...

Bacteriocin producing Lactobacillus acidophilus and Pediococcus acidilactici were isolated from milk and meat samples, respectively. An attempt was made to produce bacteriocin in a Dairy Based (DB) medium using these organisms. Higher bacteriocin activity was shown by L. acidophilus in the DB medium. Bacteriocins of both the organisms were effective against food pathogens. The bacteriocins were...

Lactobacillus (Thermobacterium) acidophilus strain R-26 has been proposed as an assay organism for the determination of deoxyribonucleic acids (Hoff-J0rgensen, 1952). In attempting to use this organism for deoxyribonucleic acid determinations in our laboratory, it was noted that growth of the culture was very poor unless crude supplements, such as yeast extract or liver extracts, were added to ...

BACKGROUND Research from developing countries, such as Nigeria, on Lactobacillus species in the female urogenital tract and their role as a barrier to vaginal infection is limited. Therefore, the aim of this study was to assess the clinical biotherapeutic potential of indigenous Lactobacillus species. METHODS Antimicrobial metabolites production were characterised using simple and easily repr...